AnotherFoxGuy/webrtc-audio-processing
1
0
Fork 0
Code Pull Requests Activity

Update audio_processing module

Browse Source 
Corresponds to upstream commit 524e9b043e7e86fd72353b987c9d5f6a1ebf83e1

Update notes:

 * Pull in third party license file

 * Replace .gypi files with BUILD.gn to keep track of what changes
   upstream

 * Bunch of new filse pulled in as dependencies

 * Won't build yet due to changes needed on top of these
This commit is contained in:
Arun Raghavan
2015-10-13 17:25:22 +05:30
parent 5ae7a5d6cd
commit 753eada3aa
324 changed files with 52533 additions and 16117 deletions
Download Patch File Download Diff File Expand all files Collapse all files

835
webrtc/modules/audio_coding/BUILD.gn Normal file
View File

@ -0,0 +1,835 @@
# Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
#
# Use of this source code is governed by a BSD-style license
# that can be found in the LICENSE file in the root of the source
# tree. An additional intellectual property rights grant can be found
# in the file PATENTS. All contributing project authors may
# be found in the AUTHORS file in the root of the source tree.
import("//build/config/arm.gni")
import("../../build/webrtc.gni")
config("audio_coding_config") {
include_dirs = [
"main/interface",
"../interface",
]
}
source_set("audio_coding") {
sources = [
"main/acm2/acm_codec_database.cc",
"main/acm2/acm_codec_database.h",
"main/acm2/acm_common_defs.h",
"main/acm2/acm_receiver.cc",
"main/acm2/acm_receiver.h",
"main/acm2/acm_resampler.cc",
"main/acm2/acm_resampler.h",
"main/acm2/audio_coding_module.cc",
"main/acm2/audio_coding_module_impl.cc",
"main/acm2/audio_coding_module_impl.h",
"main/acm2/call_statistics.cc",
"main/acm2/call_statistics.h",
"main/acm2/codec_manager.cc",
"main/acm2/codec_manager.h",
"main/acm2/codec_owner.cc",
"main/acm2/codec_owner.h",
"main/acm2/initial_delay_manager.cc",
"main/acm2/initial_delay_manager.h",
"main/acm2/nack.cc",
"main/acm2/nack.h",
"main/interface/audio_coding_module.h",
"main/interface/audio_coding_module_typedefs.h",
]
defines = []
configs += [ "../..:common_config" ]
public_configs = [
"../..:common_inherited_config",
":audio_coding_config",
]
if (is_win) {
cflags = [
# TODO(kjellander): Bug 261: fix this warning.
"/wd4373", # virtual function override.
]
}
if (is_clang) {
# Suppress warnings from Chrome's Clang plugins.
# See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
configs -= [ "//build/config/clang:find_bad_constructs" ]
}
deps = [
":cng",
":g711",
":neteq",
":pcm16b",
"../..:rtc_event_log",
"../..:webrtc_common",
"../../common_audio",
"../../system_wrappers",
]
if (rtc_include_opus) {
defines += [ "WEBRTC_CODEC_OPUS" ]
deps += [ ":webrtc_opus" ]
}
if (!build_with_mozilla) {
if (current_cpu == "arm") {
defines += [ "WEBRTC_CODEC_ISACFX" ]
deps += [ ":isac_fix" ]
} else {
defines += [ "WEBRTC_CODEC_ISAC" ]
deps += [ ":isac" ]
}
defines += [ "WEBRTC_CODEC_G722" ]
deps += [ ":g722" ]
}
if (!build_with_mozilla && !build_with_chromium) {
defines += [
"WEBRTC_CODEC_ILBC",
"WEBRTC_CODEC_RED",
]
deps += [
":ilbc",
":red",
]
}
}
source_set("audio_decoder_interface") {
sources = [
"codecs/audio_decoder.cc",
"codecs/audio_decoder.h",
]
configs += [ "../..:common_config" ]
public_configs = [ "../..:common_inherited_config" ]
deps = [
"../..:webrtc_common",
]
}
source_set("audio_encoder_interface") {
sources = [
"codecs/audio_encoder.cc",
"codecs/audio_encoder.h",
]
configs += [ "../..:common_config" ]
public_configs = [ "../..:common_inherited_config" ]
deps = [
"../..:webrtc_common",
]
}
config("cng_config") {
include_dirs = [
"../../..",
"codecs/cng/include",
]
}
source_set("cng") {
sources = [
"codecs/cng/audio_encoder_cng.cc",
"codecs/cng/cng_helpfuns.c",
"codecs/cng/cng_helpfuns.h",
"codecs/cng/include/audio_encoder_cng.h",
"codecs/cng/include/webrtc_cng.h",
"codecs/cng/webrtc_cng.c",
]
configs += [ "../..:common_config" ]
public_configs = [
"../..:common_inherited_config",
":cng_config",
]
deps = [
"../../common_audio",
":audio_encoder_interface",
]
}
config("red_config") {
include_dirs = [ "codecs/red" ]
}
source_set("red") {
sources = [
"codecs/red/audio_encoder_copy_red.cc",
"codecs/red/audio_encoder_copy_red.h",
]
configs += [ "../..:common_config" ]
public_configs = [
"../..:common_inherited_config",
":red_config",
]
deps = [
"../../common_audio",
":audio_encoder_interface",
]
}
config("g711_config") {
include_dirs = [
"../../..",
"codecs/g711/include",
]
}
source_set("g711") {
sources = [
"codecs/g711/audio_decoder_pcm.cc",
"codecs/g711/audio_encoder_pcm.cc",
"codecs/g711/g711.c",
"codecs/g711/g711.h",
"codecs/g711/g711_interface.c",
"codecs/g711/include/audio_decoder_pcm.h",
"codecs/g711/include/audio_encoder_pcm.h",
"codecs/g711/include/g711_interface.h",
]
configs += [ "../..:common_config" ]
public_configs = [
"../..:common_inherited_config",
":g711_config",
]
deps = [
":audio_encoder_interface",
]
}
config("g722_config") {
include_dirs = [
"../../..",
"codecs/g722/include",
]
}
source_set("g722") {
sources = [
"codecs/g722/audio_decoder_g722.cc",
"codecs/g722/audio_encoder_g722.cc",
"codecs/g722/g722_decode.c",
"codecs/g722/g722_enc_dec.h",
"codecs/g722/g722_encode.c",
"codecs/g722/g722_interface.c",
"codecs/g722/include/audio_decoder_g722.h",
"codecs/g722/include/audio_encoder_g722.h",
"codecs/g722/include/g722_interface.h",
]
configs += [ "../..:common_config" ]
public_configs = [
"../..:common_inherited_config",
":g722_config",
]
deps = [
":audio_encoder_interface",
]
}
config("ilbc_config") {
include_dirs = [
"../../..",
"codecs/ilbc/interface",
]
}
source_set("ilbc") {
sources = [
"codecs/ilbc/abs_quant.c",
"codecs/ilbc/abs_quant.h",
"codecs/ilbc/abs_quant_loop.c",
"codecs/ilbc/abs_quant_loop.h",
"codecs/ilbc/audio_decoder_ilbc.cc",
"codecs/ilbc/audio_encoder_ilbc.cc",
"codecs/ilbc/augmented_cb_corr.c",
"codecs/ilbc/augmented_cb_corr.h",
"codecs/ilbc/bw_expand.c",
"codecs/ilbc/bw_expand.h",
"codecs/ilbc/cb_construct.c",
"codecs/ilbc/cb_construct.h",
"codecs/ilbc/cb_mem_energy.c",
"codecs/ilbc/cb_mem_energy.h",
"codecs/ilbc/cb_mem_energy_augmentation.c",
"codecs/ilbc/cb_mem_energy_augmentation.h",
"codecs/ilbc/cb_mem_energy_calc.c",
"codecs/ilbc/cb_mem_energy_calc.h",
"codecs/ilbc/cb_search.c",
"codecs/ilbc/cb_search.h",
"codecs/ilbc/cb_search_core.c",
"codecs/ilbc/cb_search_core.h",
"codecs/ilbc/cb_update_best_index.c",
"codecs/ilbc/cb_update_best_index.h",
"codecs/ilbc/chebyshev.c",
"codecs/ilbc/chebyshev.h",
"codecs/ilbc/comp_corr.c",
"codecs/ilbc/comp_corr.h",
"codecs/ilbc/constants.c",
"codecs/ilbc/constants.h",
"codecs/ilbc/create_augmented_vec.c",
"codecs/ilbc/create_augmented_vec.h",
"codecs/ilbc/decode.c",
"codecs/ilbc/decode.h",
"codecs/ilbc/decode_residual.c",
"codecs/ilbc/decode_residual.h",
"codecs/ilbc/decoder_interpolate_lsf.c",
"codecs/ilbc/decoder_interpolate_lsf.h",
"codecs/ilbc/defines.h",
"codecs/ilbc/do_plc.c",
"codecs/ilbc/do_plc.h",
"codecs/ilbc/encode.c",
"codecs/ilbc/encode.h",
"codecs/ilbc/energy_inverse.c",
"codecs/ilbc/energy_inverse.h",
"codecs/ilbc/enh_upsample.c",
"codecs/ilbc/enh_upsample.h",
"codecs/ilbc/enhancer.c",
"codecs/ilbc/enhancer.h",
"codecs/ilbc/enhancer_interface.c",
"codecs/ilbc/enhancer_interface.h",
"codecs/ilbc/filtered_cb_vecs.c",
"codecs/ilbc/filtered_cb_vecs.h",
"codecs/ilbc/frame_classify.c",
"codecs/ilbc/frame_classify.h",
"codecs/ilbc/gain_dequant.c",
"codecs/ilbc/gain_dequant.h",
"codecs/ilbc/gain_quant.c",
"codecs/ilbc/gain_quant.h",
"codecs/ilbc/get_cd_vec.c",
"codecs/ilbc/get_cd_vec.h",
"codecs/ilbc/get_lsp_poly.c",
"codecs/ilbc/get_lsp_poly.h",
"codecs/ilbc/get_sync_seq.c",
"codecs/ilbc/get_sync_seq.h",
"codecs/ilbc/hp_input.c",
"codecs/ilbc/hp_input.h",
"codecs/ilbc/hp_output.c",
"codecs/ilbc/hp_output.h",
"codecs/ilbc/ilbc.c",
"codecs/ilbc/include/audio_decoder_ilbc.h",
"codecs/ilbc/include/audio_encoder_ilbc.h",
"codecs/ilbc/index_conv_dec.c",
"codecs/ilbc/index_conv_dec.h",
"codecs/ilbc/index_conv_enc.c",
"codecs/ilbc/index_conv_enc.h",
"codecs/ilbc/init_decode.c",
"codecs/ilbc/init_decode.h",
"codecs/ilbc/init_encode.c",
"codecs/ilbc/init_encode.h",
"codecs/ilbc/interface/ilbc.h",
"codecs/ilbc/interpolate.c",
"codecs/ilbc/interpolate.h",
"codecs/ilbc/interpolate_samples.c",
"codecs/ilbc/interpolate_samples.h",
"codecs/ilbc/lpc_encode.c",
"codecs/ilbc/lpc_encode.h",
"codecs/ilbc/lsf_check.c",
"codecs/ilbc/lsf_check.h",
"codecs/ilbc/lsf_interpolate_to_poly_dec.c",
"codecs/ilbc/lsf_interpolate_to_poly_dec.h",
"codecs/ilbc/lsf_interpolate_to_poly_enc.c",
"codecs/ilbc/lsf_interpolate_to_poly_enc.h",
"codecs/ilbc/lsf_to_lsp.c",
"codecs/ilbc/lsf_to_lsp.h",
"codecs/ilbc/lsf_to_poly.c",
"codecs/ilbc/lsf_to_poly.h",
"codecs/ilbc/lsp_to_lsf.c",
"codecs/ilbc/lsp_to_lsf.h",
"codecs/ilbc/my_corr.c",
"codecs/ilbc/my_corr.h",
"codecs/ilbc/nearest_neighbor.c",
"codecs/ilbc/nearest_neighbor.h",
"codecs/ilbc/pack_bits.c",
"codecs/ilbc/pack_bits.h",
"codecs/ilbc/poly_to_lsf.c",
"codecs/ilbc/poly_to_lsf.h",
"codecs/ilbc/poly_to_lsp.c",
"codecs/ilbc/poly_to_lsp.h",
"codecs/ilbc/refiner.c",
"codecs/ilbc/refiner.h",
"codecs/ilbc/simple_interpolate_lsf.c",
"codecs/ilbc/simple_interpolate_lsf.h",
"codecs/ilbc/simple_lpc_analysis.c",
"codecs/ilbc/simple_lpc_analysis.h",
"codecs/ilbc/simple_lsf_dequant.c",
"codecs/ilbc/simple_lsf_dequant.h",
"codecs/ilbc/simple_lsf_quant.c",
"codecs/ilbc/simple_lsf_quant.h",
"codecs/ilbc/smooth.c",
"codecs/ilbc/smooth.h",
"codecs/ilbc/smooth_out_data.c",
"codecs/ilbc/smooth_out_data.h",
"codecs/ilbc/sort_sq.c",
"codecs/ilbc/sort_sq.h",
"codecs/ilbc/split_vq.c",
"codecs/ilbc/split_vq.h",
"codecs/ilbc/state_construct.c",
"codecs/ilbc/state_construct.h",
"codecs/ilbc/state_search.c",
"codecs/ilbc/state_search.h",
"codecs/ilbc/swap_bytes.c",
"codecs/ilbc/swap_bytes.h",
"codecs/ilbc/unpack_bits.c",
"codecs/ilbc/unpack_bits.h",
"codecs/ilbc/vq3.c",
"codecs/ilbc/vq3.h",
"codecs/ilbc/vq4.c",
"codecs/ilbc/vq4.h",
"codecs/ilbc/window32_w32.c",
"codecs/ilbc/window32_w32.h",
"codecs/ilbc/xcorr_coef.c",
"codecs/ilbc/xcorr_coef.h",
]
configs += [ "../..:common_config" ]
public_configs = [
"../..:common_inherited_config",
":ilbc_config",
]
deps = [
"../../common_audio",
":audio_encoder_interface",
]
}
source_set("isac_common") {
sources = [
"codecs/isac/audio_encoder_isac_t.h",
"codecs/isac/audio_encoder_isac_t_impl.h",
"codecs/isac/locked_bandwidth_info.cc",
"codecs/isac/locked_bandwidth_info.h",
]
public_configs = [ "../..:common_inherited_config" ]
}
config("isac_config") {
include_dirs = [
"../../..",
"codecs/isac/main/interface",
]
}
source_set("isac") {
sources = [
"codecs/isac/main/interface/audio_decoder_isac.h",
"codecs/isac/main/interface/audio_encoder_isac.h",
"codecs/isac/main/interface/isac.h",
"codecs/isac/main/source/arith_routines.c",
"codecs/isac/main/source/arith_routines.h",
"codecs/isac/main/source/arith_routines_hist.c",
"codecs/isac/main/source/arith_routines_logist.c",
"codecs/isac/main/source/audio_decoder_isac.cc",
"codecs/isac/main/source/audio_encoder_isac.cc",
"codecs/isac/main/source/bandwidth_estimator.c",
"codecs/isac/main/source/bandwidth_estimator.h",
"codecs/isac/main/source/codec.h",
"codecs/isac/main/source/crc.c",
"codecs/isac/main/source/crc.h",
"codecs/isac/main/source/decode.c",
"codecs/isac/main/source/decode_bwe.c",
"codecs/isac/main/source/encode.c",
"codecs/isac/main/source/encode_lpc_swb.c",
"codecs/isac/main/source/encode_lpc_swb.h",
"codecs/isac/main/source/entropy_coding.c",
"codecs/isac/main/source/entropy_coding.h",
"codecs/isac/main/source/fft.c",
"codecs/isac/main/source/fft.h",
"codecs/isac/main/source/filter_functions.c",
"codecs/isac/main/source/filterbank_tables.c",
"codecs/isac/main/source/filterbank_tables.h",
"codecs/isac/main/source/filterbanks.c",
"codecs/isac/main/source/intialize.c",
"codecs/isac/main/source/isac.c",
"codecs/isac/main/source/isac_float_type.h",
"codecs/isac/main/source/lattice.c",
"codecs/isac/main/source/lpc_analysis.c",
"codecs/isac/main/source/lpc_analysis.h",
"codecs/isac/main/source/lpc_gain_swb_tables.c",
"codecs/isac/main/source/lpc_gain_swb_tables.h",
"codecs/isac/main/source/lpc_shape_swb12_tables.c",
"codecs/isac/main/source/lpc_shape_swb12_tables.h",
"codecs/isac/main/source/lpc_shape_swb16_tables.c",
"codecs/isac/main/source/lpc_shape_swb16_tables.h",
"codecs/isac/main/source/lpc_tables.c",
"codecs/isac/main/source/lpc_tables.h",
"codecs/isac/main/source/os_specific_inline.h",
"codecs/isac/main/source/pitch_estimator.c",
"codecs/isac/main/source/pitch_estimator.h",
"codecs/isac/main/source/pitch_filter.c",
"codecs/isac/main/source/pitch_gain_tables.c",
"codecs/isac/main/source/pitch_gain_tables.h",
"codecs/isac/main/source/pitch_lag_tables.c",
"codecs/isac/main/source/pitch_lag_tables.h",
"codecs/isac/main/source/settings.h",
"codecs/isac/main/source/spectrum_ar_model_tables.c",
"codecs/isac/main/source/spectrum_ar_model_tables.h",
"codecs/isac/main/source/structs.h",
"codecs/isac/main/source/transform.c",
]
if (is_linux) {
libs = [ "m" ]
}
configs += [ "../..:common_config" ]
public_configs = [
"../..:common_inherited_config",
":isac_config",
]
deps = [
":audio_decoder_interface",
":audio_encoder_interface",
":isac_common",
"../../common_audio",
]
}
config("isac_fix_config") {
include_dirs = [
"../../..",
"codecs/isac/fix/interface",
]
}
source_set("isac_fix") {
sources = [
"codecs/isac/fix/interface/audio_decoder_isacfix.h",
"codecs/isac/fix/interface/audio_encoder_isacfix.h",
"codecs/isac/fix/interface/isacfix.h",
"codecs/isac/fix/source/arith_routines.c",
"codecs/isac/fix/source/arith_routines_hist.c",
"codecs/isac/fix/source/arith_routines_logist.c",
"codecs/isac/fix/source/arith_routins.h",
"codecs/isac/fix/source/audio_decoder_isacfix.cc",
"codecs/isac/fix/source/audio_encoder_isacfix.cc",
"codecs/isac/fix/source/bandwidth_estimator.c",
"codecs/isac/fix/source/bandwidth_estimator.h",
"codecs/isac/fix/source/codec.h",
"codecs/isac/fix/source/decode.c",
"codecs/isac/fix/source/decode_bwe.c",
"codecs/isac/fix/source/decode_plc.c",
"codecs/isac/fix/source/encode.c",
"codecs/isac/fix/source/entropy_coding.c",
"codecs/isac/fix/source/entropy_coding.h",
"codecs/isac/fix/source/fft.c",
"codecs/isac/fix/source/fft.h",
"codecs/isac/fix/source/filterbank_tables.c",
"codecs/isac/fix/source/filterbank_tables.h",
"codecs/isac/fix/source/filterbanks.c",
"codecs/isac/fix/source/filters.c",
"codecs/isac/fix/source/initialize.c",
"codecs/isac/fix/source/isac_fix_type.h",
"codecs/isac/fix/source/isacfix.c",
"codecs/isac/fix/source/lattice.c",
"codecs/isac/fix/source/lattice_c.c",
"codecs/isac/fix/source/lpc_masking_model.c",
"codecs/isac/fix/source/lpc_masking_model.h",
"codecs/isac/fix/source/lpc_tables.c",
"codecs/isac/fix/source/lpc_tables.h",
"codecs/isac/fix/source/pitch_estimator.c",
"codecs/isac/fix/source/pitch_estimator.h",
"codecs/isac/fix/source/pitch_estimator_c.c",
"codecs/isac/fix/source/pitch_filter.c",
"codecs/isac/fix/source/pitch_filter_c.c",
"codecs/isac/fix/source/pitch_gain_tables.c",
"codecs/isac/fix/source/pitch_gain_tables.h",
"codecs/isac/fix/source/pitch_lag_tables.c",
"codecs/isac/fix/source/pitch_lag_tables.h",
"codecs/isac/fix/source/settings.h",
"codecs/isac/fix/source/spectrum_ar_model_tables.c",
"codecs/isac/fix/source/spectrum_ar_model_tables.h",
"codecs/isac/fix/source/structs.h",
"codecs/isac/fix/source/transform.c",
"codecs/isac/fix/source/transform_tables.c",
]
if (!is_win) {
defines = [ "WEBRTC_LINUX" ]
}
configs += [ "../..:common_config" ]
public_configs = [
"../..:common_inherited_config",
":isac_fix_config",
]
deps = [
":audio_encoder_interface",
":isac_common",
"../../common_audio",
"../../system_wrappers",
]
if (rtc_build_with_neon) {
deps += [ ":isac_neon" ]
}
if (current_cpu == "arm" && arm_version >= 7) {
sources += [
"codecs/isac/fix/source/lattice_armv7.S",
"codecs/isac/fix/source/pitch_filter_armv6.S",
]
sources -= [
"codecs/isac/fix/source/lattice_c.c",
"codecs/isac/fix/source/pitch_filter_c.c",
]
}
if (current_cpu == "mipsel") {
sources += [
"codecs/isac/fix/source/entropy_coding_mips.c",
"codecs/isac/fix/source/filters_mips.c",
"codecs/isac/fix/source/lattice_mips.c",
"codecs/isac/fix/source/pitch_estimator_mips.c",
"codecs/isac/fix/source/transform_mips.c",
]
sources -= [
"codecs/isac/fix/source/lattice_c.c",
"codecs/isac/fix/source/pitch_estimator_c.c",
]
if (mips_dsp_rev > 0) {
sources += [ "codecs/isac/fix/source/filterbanks_mips.c" ]
}
if (mips_dsp_rev > 1) {
sources += [
"codecs/isac/fix/source/lpc_masking_model_mips.c",
"codecs/isac/fix/source/pitch_filter_mips.c",
]
sources -= [ "codecs/isac/fix/source/pitch_filter_c.c" ]
}
}
}
if (rtc_build_with_neon) {
source_set("isac_neon") {
sources = [
"codecs/isac/fix/source/entropy_coding_neon.c",
"codecs/isac/fix/source/filterbanks_neon.c",
"codecs/isac/fix/source/filters_neon.c",
"codecs/isac/fix/source/lattice_neon.c",
"codecs/isac/fix/source/transform_neon.c",
]
if (current_cpu != "arm64") {
# Enable compilation for the NEON instruction set. This is needed
# since //build/config/arm.gni only enables NEON for iOS, not Android.
# This provides the same functionality as webrtc/build/arm_neon.gypi.
configs -= [ "//build/config/compiler:compiler_arm_fpu" ]
cflags = [ "-mfpu=neon" ]
}
# Disable LTO on NEON targets due to compiler bug.
# TODO(fdegans): Enable this. See crbug.com/408997.
if (rtc_use_lto) {
cflags -= [
"-flto",
"-ffat-lto-objects",
]
}
configs += [ "../..:common_config" ]
public_configs = [ "../..:common_inherited_config" ]
deps = [
"../../common_audio",
]
}
}
config("pcm16b_config") {
include_dirs = [
"../../..",
"codecs/pcm16b/include",
]
}
source_set("pcm16b") {
sources = [
"codecs/pcm16b/audio_decoder_pcm16b.cc",
"codecs/pcm16b/audio_encoder_pcm16b.cc",
"codecs/pcm16b/include/audio_decoder_pcm16b.h",
"codecs/pcm16b/include/audio_encoder_pcm16b.h",
"codecs/pcm16b/include/pcm16b.h",
"codecs/pcm16b/pcm16b.c",
]
deps = [
":audio_encoder_interface",
":g711",
]
configs += [ "../..:common_config" ]
public_configs = [
"../..:common_inherited_config",
":pcm16b_config",
]
}
config("opus_config") {
include_dirs = [ "../../.." ]
}
source_set("webrtc_opus") {
sources = [
"codecs/opus/audio_decoder_opus.cc",
"codecs/opus/audio_encoder_opus.cc",
"codecs/opus/interface/audio_decoder_opus.h",
"codecs/opus/interface/audio_encoder_opus.h",
"codecs/opus/interface/opus_interface.h",
"codecs/opus/opus_inst.h",
"codecs/opus/opus_interface.c",
]
deps = [
":audio_encoder_interface",
]
if (rtc_build_opus) {
configs += [ "../..:common_config" ]
public_configs = [ "../..:common_inherited_config" ]
public_deps = [
rtc_opus_dir,
]
} else if (build_with_mozilla) {
include_dirs = [ getenv("DIST") + "/include/opus" ]
}
}
config("neteq_config") {
include_dirs = [
# Need Opus header files for the audio classifier.
"//third_party/opus/src/celt",
"//third_party/opus/src/src",
]
}
source_set("neteq") {
sources = [
"neteq/accelerate.cc",
"neteq/accelerate.h",
"neteq/audio_classifier.cc",
"neteq/audio_classifier.h",
"neteq/audio_decoder_impl.cc",
"neteq/audio_decoder_impl.h",
"neteq/audio_multi_vector.cc",
"neteq/audio_multi_vector.h",
"neteq/audio_vector.cc",
"neteq/audio_vector.h",
"neteq/background_noise.cc",
"neteq/background_noise.h",
"neteq/buffer_level_filter.cc",
"neteq/buffer_level_filter.h",
"neteq/comfort_noise.cc",
"neteq/comfort_noise.h",
"neteq/decision_logic.cc",
"neteq/decision_logic.h",
"neteq/decision_logic_fax.cc",
"neteq/decision_logic_fax.h",
"neteq/decision_logic_normal.cc",
"neteq/decision_logic_normal.h",
"neteq/decoder_database.cc",
"neteq/decoder_database.h",
"neteq/defines.h",
"neteq/delay_manager.cc",
"neteq/delay_manager.h",
"neteq/delay_peak_detector.cc",
"neteq/delay_peak_detector.h",
"neteq/dsp_helper.cc",
"neteq/dsp_helper.h",
"neteq/dtmf_buffer.cc",
"neteq/dtmf_buffer.h",
"neteq/dtmf_tone_generator.cc",
"neteq/dtmf_tone_generator.h",
"neteq/expand.cc",
"neteq/expand.h",
"neteq/interface/neteq.h",
"neteq/merge.cc",
"neteq/merge.h",
"neteq/neteq.cc",
"neteq/neteq_impl.cc",
"neteq/neteq_impl.h",
"neteq/normal.cc",
"neteq/normal.h",
"neteq/packet_buffer.cc",
"neteq/packet_buffer.h",
"neteq/payload_splitter.cc",
"neteq/payload_splitter.h",
"neteq/post_decode_vad.cc",
"neteq/post_decode_vad.h",
"neteq/preemptive_expand.cc",
"neteq/preemptive_expand.h",
"neteq/random_vector.cc",
"neteq/random_vector.h",
"neteq/rtcp.cc",
"neteq/rtcp.h",
"neteq/statistics_calculator.cc",
"neteq/statistics_calculator.h",
"neteq/sync_buffer.cc",
"neteq/sync_buffer.h",
"neteq/time_stretch.cc",
"neteq/time_stretch.h",
"neteq/timestamp_scaler.cc",
"neteq/timestamp_scaler.h",
]
configs += [ "../..:common_config" ]
public_configs = [
"../..:common_inherited_config",
":neteq_config",
]
deps = [
":audio_decoder_interface",
":cng",
":g711",
":pcm16b",
"../..:webrtc_common",
"../../common_audio",
"../../system_wrappers",
]
defines = []
if (rtc_include_opus) {
defines += [ "WEBRTC_CODEC_OPUS" ]
deps += [ ":webrtc_opus" ]
}
if (!build_with_mozilla) {
if (current_cpu == "arm") {
defines += [ "WEBRTC_CODEC_ISACFX" ]
deps += [ ":isac_fix" ]
} else {
defines += [ "WEBRTC_CODEC_ISAC" ]
deps += [ ":isac" ]
}
defines += [ "WEBRTC_CODEC_G722" ]
deps += [ ":g722" ]
}
if (!build_with_mozilla && !build_with_chromium) {
defines += [ "WEBRTC_CODEC_ILBC" ]
deps += [ ":ilbc" ]
}
}

35
webrtc/modules/audio_coding/Makefile.am Normal file
View File

@ -0,0 +1,35 @@
noinst_LTLIBRARIES = libaudio_coding.la
libaudio_coding_la_SOURCES = codecs/isac/main/interface/isac.h \
codecs/isac/main/source/arith_routines.c \
codecs/isac/main/source/arith_routines.h \
codecs/isac/main/source/codec.h \
codecs/isac/main/source/encode_lpc_swb.c \
codecs/isac/main/source/encode_lpc_swb.h \
codecs/isac/main/source/entropy_coding.c \
codecs/isac/main/source/entropy_coding.h \
codecs/isac/main/source/lpc_analysis.c \
codecs/isac/main/source/lpc_analysis.h \
codecs/isac/main/source/lpc_gain_swb_tables.c \
codecs/isac/main/source/lpc_gain_swb_tables.h \
codecs/isac/main/source/lpc_shape_swb12_tables.c \
codecs/isac/main/source/lpc_shape_swb12_tables.h \
codecs/isac/main/source/lpc_shape_swb16_tables.c \
codecs/isac/main/source/lpc_shape_swb16_tables.h \
codecs/isac/main/source/lpc_tables.c \
codecs/isac/main/source/lpc_tables.h \
codecs/isac/main/source/os_specific_inline.h \
codecs/isac/main/source/pitch_estimator.c \
codecs/isac/main/source/pitch_estimator.h \
codecs/isac/main/source/pitch_gain_tables.c \
codecs/isac/main/source/pitch_gain_tables.h \
codecs/isac/main/source/pitch_lag_tables.c \
codecs/isac/main/source/pitch_lag_tables.h \
codecs/isac/main/source/settings.h \
codecs/isac/main/source/spectrum_ar_model_tables.c \
codecs/isac/main/source/spectrum_ar_model_tables.h \
codecs/isac/main/source/structs.h \
codecs/isac/bandwidth_info.h
libaudio_coding_la_CFLAGS = $(AM_CFLAGS) $(COMMON_CFLAGS)
libaudio_coding_la_CXXFLAGS = $(AM_CXXFLAGS) $(COMMON_CXXFLAGS)

24
webrtc/modules/audio_coding/codecs/isac/bandwidth_info.h Normal file
View File

@ -0,0 +1,24 @@
/*
* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_BANDWIDTH_INFO_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_BANDWIDTH_INFO_H_
#include "webrtc/typedefs.h"
typedef struct {
int in_use;
int32_t send_bw_avg;
int32_t send_max_delay_avg;
int16_t bottleneck_idx;
int16_t jitter_info;
} IsacBandwidthInfo;
#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_BANDWIDTH_INFO_H_

724
webrtc/modules/audio_coding/codecs/isac/main/interface/isac.h Normal file
View File

@ -0,0 +1,724 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_INTERFACE_ISAC_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_INTERFACE_ISAC_H_
#include <stddef.h>
#include "webrtc/modules/audio_coding/codecs/isac/bandwidth_info.h"
#include "webrtc/typedefs.h"
typedef struct WebRtcISACStruct ISACStruct;
#if defined(__cplusplus)
extern "C" {
#endif
/******************************************************************************
* WebRtcIsac_AssignSize(...)
*
* This function returns the size of the ISAC instance, so that the instance
* can be created outside iSAC.
*
* Input:
* - samplingRate : sampling rate of the input/output audio.
*
* Output:
* - sizeinbytes : number of bytes needed to allocate for the
* instance.
*
* Return value : 0 - Ok
* -1 - Error
*/
int16_t WebRtcIsac_AssignSize(
int* sizeinbytes);
/******************************************************************************
* WebRtcIsac_Assign(...)
*
* This function assignes the memory already created to the ISAC instance.
*
* Input:
* - *ISAC_main_inst : a pointer to the coder instance.
* - samplingRate : sampling rate of the input/output audio.
* - ISAC_inst_Addr : the already allocated memory, where we put the
* iSAC structure.
*
* Return value : 0 - Ok
* -1 - Error
*/
int16_t WebRtcIsac_Assign(
ISACStruct** ISAC_main_inst,
void* ISAC_inst_Addr);
/******************************************************************************
* WebRtcIsac_Create(...)
*
* This function creates an ISAC instance, which will contain the state
* information for one coding/decoding channel.
*
* Input:
* - *ISAC_main_inst : a pointer to the coder instance.
*
* Return value : 0 - Ok
* -1 - Error
*/
int16_t WebRtcIsac_Create(
ISACStruct** ISAC_main_inst);
/******************************************************************************
* WebRtcIsac_Free(...)
*
* This function frees the ISAC instance created at the beginning.
*
* Input:
* - ISAC_main_inst : an ISAC instance.
*
* Return value : 0 - Ok
* -1 - Error
*/
int16_t WebRtcIsac_Free(
ISACStruct* ISAC_main_inst);
/******************************************************************************
* WebRtcIsac_EncoderInit(...)
*
* This function initializes an ISAC instance prior to the encoder calls.
*
* Input:
* - ISAC_main_inst : ISAC instance.
* - CodingMode : 0 -> Bit rate and frame length are
* automatically adjusted to available bandwidth
* on transmission channel, just valid if codec
* is created to work in wideband mode.
* 1 -> User sets a frame length and a target bit
* rate which is taken as the maximum
* short-term average bit rate.
*
* Return value : 0 - Ok
* -1 - Error
*/
int16_t WebRtcIsac_EncoderInit(
ISACStruct* ISAC_main_inst,
int16_t CodingMode);
/******************************************************************************
* WebRtcIsac_Encode(...)
*
* This function encodes 10ms audio blocks and inserts it into a package.
* Input speech length has 160 samples if operating at 16 kHz sampling
* rate, or 320 if operating at 32 kHz sampling rate. The encoder buffers the
* input audio until the whole frame is buffered then proceeds with encoding.
*
*
* Input:
* - ISAC_main_inst : ISAC instance.
* - speechIn : input speech vector.
*
* Output:
* - encoded : the encoded data vector
*
* Return value:
* : >0 - Length (in bytes) of coded data
* : 0 - The buffer didn't reach the chosen
* frame-size so it keeps buffering speech
* samples.
* : -1 - Error
*/
int WebRtcIsac_Encode(
ISACStruct* ISAC_main_inst,
const int16_t* speechIn,
uint8_t* encoded);
/******************************************************************************
* WebRtcIsac_DecoderInit(...)
*
* This function initializes an ISAC instance prior to the decoder calls.
*
* Input:
* - ISAC_main_inst : ISAC instance.
*/
void WebRtcIsac_DecoderInit(ISACStruct* ISAC_main_inst);
/******************************************************************************
* WebRtcIsac_UpdateBwEstimate(...)
*
* This function updates the estimate of the bandwidth.
*
* Input:
* - ISAC_main_inst : ISAC instance.
* - encoded : encoded ISAC frame(s).
* - packet_size : size of the packet.
* - rtp_seq_number : the RTP number of the packet.
* - send_ts : the RTP send timestamp, given in samples
* - arr_ts : the arrival time of the packet (from NetEq)
* in samples.
*
* Return value : 0 - Ok
* -1 - Error
*/
int16_t WebRtcIsac_UpdateBwEstimate(
ISACStruct* ISAC_main_inst,
const uint8_t* encoded,
size_t packet_size,
uint16_t rtp_seq_number,
uint32_t send_ts,
uint32_t arr_ts);
/******************************************************************************
* WebRtcIsac_Decode(...)
*
* This function decodes an ISAC frame. At 16 kHz sampling rate, the length
* of the output audio could be either 480 or 960 samples, equivalent to
* 30 or 60 ms respectively. At 32 kHz sampling rate, the length of the
* output audio is 960 samples, which is 30 ms.
*
* Input:
* - ISAC_main_inst : ISAC instance.
* - encoded : encoded ISAC frame(s).
* - len : bytes in encoded vector.
*
* Output:
* - decoded : The decoded vector.
*
* Return value : >0 - number of samples in decoded vector.
* -1 - Error.
*/
int WebRtcIsac_Decode(
ISACStruct* ISAC_main_inst,
const uint8_t* encoded,
size_t len,
int16_t* decoded,
int16_t* speechType);
/******************************************************************************
* WebRtcIsac_DecodePlc(...)
*
* This function conducts PLC for ISAC frame(s). Output speech length
* will be a multiple of frames, i.e. multiples of 30 ms audio. Therefore,
* the output is multiple of 480 samples if operating at 16 kHz and multiple
* of 960 if operating at 32 kHz.
*
* Input:
* - ISAC_main_inst : ISAC instance.
* - noOfLostFrames : Number of PLC frames to produce.
*
* Output:
* - decoded : The decoded vector.
*
* Return value : Number of samples in decoded PLC vector
*/
size_t WebRtcIsac_DecodePlc(
ISACStruct* ISAC_main_inst,
int16_t* decoded,
size_t noOfLostFrames);
/******************************************************************************
* WebRtcIsac_Control(...)
*
* This function sets the limit on the short-term average bit-rate and the
* frame length. Should be used only in Instantaneous mode. At 16 kHz sampling
* rate, an average bit-rate between 10000 to 32000 bps is valid and a
* frame-size of 30 or 60 ms is acceptable. At 32 kHz, an average bit-rate
* between 10000 to 56000 is acceptable, and the valid frame-size is 30 ms.
*
* Input:
* - ISAC_main_inst : ISAC instance.
* - rate : limit on the short-term average bit rate,
* in bits/second.
* - framesize : frame-size in millisecond.
*
* Return value : 0 - ok
* -1 - Error
*/
int16_t WebRtcIsac_Control(
ISACStruct* ISAC_main_inst,
int32_t rate,
int framesize);
void WebRtcIsac_SetInitialBweBottleneck(ISACStruct* ISAC_main_inst,
int bottleneck_bits_per_second);
/******************************************************************************
* WebRtcIsac_ControlBwe(...)
*
* This function sets the initial values of bottleneck and frame-size if
* iSAC is used in channel-adaptive mode. Therefore, this API is not
* applicable if the codec is created to operate in super-wideband mode.
*
* Through this API, users can enforce a frame-size for all values of
* bottleneck. Then iSAC will not automatically change the frame-size.
*
*
* Input:
* - ISAC_main_inst : ISAC instance.
* - rateBPS : initial value of bottleneck in bits/second
* 10000 <= rateBPS <= 56000 is accepted
* For default bottleneck set rateBPS = 0
* - frameSizeMs : number of milliseconds per frame (30 or 60)
* - enforceFrameSize : 1 to enforce the given frame-size through
* out the adaptation process, 0 to let iSAC
* change the frame-size if required.
*
* Return value : 0 - ok
* -1 - Error
*/
int16_t WebRtcIsac_ControlBwe(
ISACStruct* ISAC_main_inst,
int32_t rateBPS,
int frameSizeMs,
int16_t enforceFrameSize);
/******************************************************************************
* WebRtcIsac_ReadFrameLen(...)
*
* This function returns the length of the frame represented in the packet.
*
* Input:
* - encoded : Encoded bit-stream
*
* Output:
* - frameLength : Length of frame in packet (in samples)
*
*/
int16_t WebRtcIsac_ReadFrameLen(
ISACStruct* ISAC_main_inst,
const uint8_t* encoded,
int16_t* frameLength);
/******************************************************************************
* WebRtcIsac_version(...)
*
* This function returns the version number.
*
* Output:
* - version : Pointer to character string
*
*/
void WebRtcIsac_version(
char *version);
/******************************************************************************
* WebRtcIsac_GetErrorCode(...)
*
* This function can be used to check the error code of an iSAC instance. When
* a function returns -1 a error code will be set for that instance. The
* function below extract the code of the last error that occurred in the
* specified instance.
*
* Input:
* - ISAC_main_inst : ISAC instance
*
* Return value : Error code
*/
int16_t WebRtcIsac_GetErrorCode(
ISACStruct* ISAC_main_inst);
/****************************************************************************
* WebRtcIsac_GetUplinkBw(...)
*
* This function outputs the target bottleneck of the codec. In
* channel-adaptive mode, the target bottleneck is specified through in-band
* signalling retreived by bandwidth estimator.
* In channel-independent, also called instantaneous mode, the target
* bottleneck is provided to the encoder by calling xxx_control(...). If
* xxx_control is never called the default values is returned. The default
* value for bottleneck at 16 kHz encoder sampling rate is 32000 bits/sec,
* and it is 56000 bits/sec for 32 kHz sampling rate.
* Note that the output is the iSAC internal operating bottleneck which might
* differ slightly from the one provided through xxx_control().
*
* Input:
* - ISAC_main_inst : iSAC instance
*
* Output:
* - *bottleneck : bottleneck in bits/sec
*
* Return value : -1 if error happens
* 0 bit-rates computed correctly.
*/
int16_t WebRtcIsac_GetUplinkBw(
ISACStruct* ISAC_main_inst,
int32_t* bottleneck);
/******************************************************************************
* WebRtcIsac_SetMaxPayloadSize(...)
*
* This function sets a limit for the maximum payload size of iSAC. The same
* value is used both for 30 and 60 ms packets. If the encoder sampling rate
* is 16 kHz the maximum payload size is between 120 and 400 bytes. If the
* encoder sampling rate is 32 kHz the maximum payload size is between 120
* and 600 bytes.
*
* If an out of range limit is used, the function returns -1, but the closest
* valid value will be applied.
*
* ---------------
* IMPORTANT NOTES
* ---------------
* The size of a packet is limited to the minimum of 'max-payload-size' and
* 'max-rate.' For instance, let's assume the max-payload-size is set to
* 170 bytes, and max-rate is set to 40 kbps. Note that a limit of 40 kbps
* translates to 150 bytes for 30ms frame-size & 300 bytes for 60ms
* frame-size. Then a packet with a frame-size of 30 ms is limited to 150,
* i.e. min(170, 150), and a packet with 60 ms frame-size is limited to
* 170 bytes, i.e. min(170, 300).
*
* Input:
* - ISAC_main_inst : iSAC instance
* - maxPayloadBytes : maximum size of the payload in bytes
* valid values are between 120 and 400 bytes
* if encoder sampling rate is 16 kHz. For
* 32 kHz encoder sampling rate valid values
* are between 120 and 600 bytes.
*
* Return value : 0 if successful
* -1 if error happens
*/
int16_t WebRtcIsac_SetMaxPayloadSize(
ISACStruct* ISAC_main_inst,
int16_t maxPayloadBytes);
/******************************************************************************
* WebRtcIsac_SetMaxRate(...)
*
* This function sets the maximum rate which the codec may not exceed for
* any signal packet. The maximum rate is defined and payload-size per
* frame-size in bits per second.
*
* The codec has a maximum rate of 53400 bits per second (200 bytes per 30
* ms) if the encoder sampling rate is 16kHz, and 160 kbps (600 bytes/30 ms)
* if the encoder sampling rate is 32 kHz.
*
* It is possible to set a maximum rate between 32000 and 53400 bits/sec
* in wideband mode, and 32000 to 160000 bits/sec in super-wideband mode.
*
* If an out of range limit is used, the function returns -1, but the closest
* valid value will be applied.
*
* ---------------
* IMPORTANT NOTES
* ---------------
* The size of a packet is limited to the minimum of 'max-payload-size' and
* 'max-rate.' For instance, let's assume the max-payload-size is set to
* 170 bytes, and max-rate is set to 40 kbps. Note that a limit of 40 kbps
* translates to 150 bytes for 30ms frame-size & 300 bytes for 60ms
* frame-size. Then a packet with a frame-size of 30 ms is limited to 150,
* i.e. min(170, 150), and a packet with 60 ms frame-size is limited to
* 170 bytes, min(170, 300).
*
* Input:
* - ISAC_main_inst : iSAC instance
* - maxRate : maximum rate in bits per second,
* valid values are 32000 to 53400 bits/sec in
* wideband mode, and 32000 to 160000 bits/sec in
* super-wideband mode.
*
* Return value : 0 if successful
* -1 if error happens
*/
int16_t WebRtcIsac_SetMaxRate(
ISACStruct* ISAC_main_inst,
int32_t maxRate);
/******************************************************************************
* WebRtcIsac_DecSampRate()
* Return the sampling rate of the decoded audio.
*
* Input:
* - ISAC_main_inst : iSAC instance
*
* Return value : sampling frequency in Hertz.
*
*/
uint16_t WebRtcIsac_DecSampRate(ISACStruct* ISAC_main_inst);
/******************************************************************************
* WebRtcIsac_EncSampRate()
*
* Input:
* - ISAC_main_inst : iSAC instance
*
* Return value : sampling rate in Hertz.
*
*/
uint16_t WebRtcIsac_EncSampRate(ISACStruct* ISAC_main_inst);
/******************************************************************************
* WebRtcIsac_SetDecSampRate()
* Set the sampling rate of the decoder. Initialization of the decoder WILL
* NOT overwrite the sampling rate of the encoder. The default value is 16 kHz
* which is set when the instance is created.
*
* Input:
* - ISAC_main_inst : iSAC instance
* - sampRate : sampling rate in Hertz.
*
* Return value : 0 if successful
* -1 if failed.
*/
int16_t WebRtcIsac_SetDecSampRate(ISACStruct* ISAC_main_inst,
uint16_t samp_rate_hz);
/******************************************************************************
* WebRtcIsac_SetEncSampRate()
* Set the sampling rate of the encoder. Initialization of the encoder WILL
* NOT overwrite the sampling rate of the encoder. The default value is 16 kHz
* which is set when the instance is created. The encoding-mode and the
* bottleneck remain unchanged by this call, however, the maximum rate and
* maximum payload-size will reset to their default value.
*
* Input:
* - ISAC_main_inst : iSAC instance
* - sampRate : sampling rate in Hertz.
*
* Return value : 0 if successful
* -1 if failed.
*/
int16_t WebRtcIsac_SetEncSampRate(ISACStruct* ISAC_main_inst,
uint16_t sample_rate_hz);
/******************************************************************************
* WebRtcIsac_GetNewBitStream(...)
*
* This function returns encoded data, with the recieved bwe-index in the
* stream. If the rate is set to a value less than bottleneck of codec
* the new bistream will be re-encoded with the given target rate.
* It should always return a complete packet, i.e. only called once
* even for 60 msec frames.
*
* NOTE 1! This function does not write in the ISACStruct, it is not allowed.
* NOTE 2! Currently not implemented for SWB mode.
* NOTE 3! Rates larger than the bottleneck of the codec will be limited
* to the current bottleneck.
*
* Input:
* - ISAC_main_inst : ISAC instance.
* - bweIndex : Index of bandwidth estimate to put in new
* bitstream
* - rate : target rate of the transcoder is bits/sec.
* Valid values are the accepted rate in iSAC,
* i.e. 10000 to 56000.
* - isRCU : if the new bit-stream is an RCU stream.
* Note that the rate parameter always indicates
* the target rate of the main payload, regardless
* of 'isRCU' value.
*
* Output:
* - encoded : The encoded data vector
*
* Return value : >0 - Length (in bytes) of coded data
* -1 - Error or called in SWB mode
* NOTE! No error code is written to
* the struct since it is only allowed to read
* the struct.
*/
int16_t WebRtcIsac_GetNewBitStream(
ISACStruct* ISAC_main_inst,
int16_t bweIndex,
int16_t jitterInfo,
int32_t rate,
uint8_t* encoded,
int16_t isRCU);
/****************************************************************************
* WebRtcIsac_GetDownLinkBwIndex(...)
*
* This function returns index representing the Bandwidth estimate from
* other side to this side.
*
* Input:
* - ISAC_main_inst : iSAC struct
*
* Output:
* - bweIndex : Bandwidth estimate to transmit to other side.
*
*/
int16_t WebRtcIsac_GetDownLinkBwIndex(
ISACStruct* ISAC_main_inst,
int16_t* bweIndex,
int16_t* jitterInfo);
/****************************************************************************
* WebRtcIsac_UpdateUplinkBw(...)
*
* This function takes an index representing the Bandwidth estimate from
* this side to other side and updates BWE.
*
* Input:
* - ISAC_main_inst : iSAC struct
* - bweIndex : Bandwidth estimate from other side.
*
*/
int16_t WebRtcIsac_UpdateUplinkBw(
ISACStruct* ISAC_main_inst,
int16_t bweIndex);
/****************************************************************************
* WebRtcIsac_ReadBwIndex(...)
*
* This function returns the index of the Bandwidth estimate from the bitstream.
*
* Input:
* - encoded : Encoded bitstream
*
* Output:
* - frameLength : Length of frame in packet (in samples)
* - bweIndex : Bandwidth estimate in bitstream
*
*/
int16_t WebRtcIsac_ReadBwIndex(
const uint8_t* encoded,
int16_t* bweIndex);
/*******************************************************************************
* WebRtcIsac_GetNewFrameLen(...)
*
* returns the frame lenght (in samples) of the next packet. In the case of channel-adaptive
* mode, iSAC decides on its frame lenght based on the estimated bottleneck
* this allows a user to prepare for the next packet (at the encoder)
*
* The primary usage is in CE to make the iSAC works in channel-adaptive mode
*
* Input:
* - ISAC_main_inst : iSAC struct
*
* Return Value : frame lenght in samples
*
*/
int16_t WebRtcIsac_GetNewFrameLen(
ISACStruct* ISAC_main_inst);
/****************************************************************************
* WebRtcIsac_GetRedPayload(...)
*
* Populates "encoded" with the redundant payload of the recently encoded
* frame. This function has to be called once that WebRtcIsac_Encode(...)
* returns a positive value. Regardless of the frame-size this function will
* be called only once after encoding is completed.
*
* Input:
* - ISAC_main_inst : iSAC struct
*
* Output:
* - encoded : the encoded data vector
*
*
* Return value:
* : >0 - Length (in bytes) of coded data
* : -1 - Error
*
*
*/
int16_t WebRtcIsac_GetRedPayload(
ISACStruct* ISAC_main_inst,
uint8_t* encoded);
/****************************************************************************
* WebRtcIsac_DecodeRcu(...)
*
* This function decodes a redundant (RCU) iSAC frame. Function is called in
* NetEq with a stored RCU payload i case of packet loss. Output speech length
* will be a multiple of 480 samples: 480 or 960 samples,
* depending on the framesize (30 or 60 ms).
*
* Input:
* - ISAC_main_inst : ISAC instance.
* - encoded : encoded ISAC RCU frame(s)
* - len : bytes in encoded vector
*
* Output:
* - decoded : The decoded vector
*
* Return value : >0 - number of samples in decoded vector
* -1 - Error
*/
int WebRtcIsac_DecodeRcu(
ISACStruct* ISAC_main_inst,
const uint8_t* encoded,
size_t len,
int16_t* decoded,
int16_t* speechType);
/* Fills in an IsacBandwidthInfo struct. |inst| should be a decoder. */
void WebRtcIsac_GetBandwidthInfo(ISACStruct* inst, IsacBandwidthInfo* bwinfo);
/* Uses the values from an IsacBandwidthInfo struct. |inst| should be an
encoder. */
void WebRtcIsac_SetBandwidthInfo(ISACStruct* inst,
const IsacBandwidthInfo* bwinfo);
/* If |inst| is a decoder but not an encoder: tell it what sample rate the
encoder is using, for bandwidth estimation purposes. */
void WebRtcIsac_SetEncSampRateInDecoder(ISACStruct* inst, int sample_rate_hz);
#if defined(__cplusplus)
}
#endif
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_INTERFACE_ISAC_H_ */

60
webrtc/modules/audio_coding/codecs/isac/main/source/arith_routines.c Normal file
View File

@ -0,0 +1,60 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "arith_routines.h"
#include "settings.h"
/*
* terminate and return byte stream;
* returns the number of bytes in the stream
*/
int WebRtcIsac_EncTerminate(Bitstr *streamdata) /* in-/output struct containing bitstream */
{
uint8_t *stream_ptr;
/* point to the right place in the stream buffer */
stream_ptr = streamdata->stream + streamdata->stream_index;
/* find minimum length (determined by current interval width) */
if ( streamdata->W_upper > 0x01FFFFFF )
{
streamdata->streamval += 0x01000000;
/* add carry to buffer */
if (streamdata->streamval < 0x01000000)
{
/* propagate carry */
while ( !(++(*--stream_ptr)) );
/* put pointer back to the old value */
stream_ptr = streamdata->stream + streamdata->stream_index;
}
/* write remaining data to bitstream */
*stream_ptr++ = (uint8_t) (streamdata->streamval >> 24);
}
else
{
streamdata->streamval += 0x00010000;
/* add carry to buffer */
if (streamdata->streamval < 0x00010000)
{
/* propagate carry */
while ( !(++(*--stream_ptr)) );
/* put pointer back to the old value */
stream_ptr = streamdata->stream + streamdata->stream_index;
}
/* write remaining data to bitstream */
*stream_ptr++ = (uint8_t) (streamdata->streamval >> 24);
*stream_ptr++ = (uint8_t) ((streamdata->streamval >> 16) & 0x00FF);
}
/* calculate stream length */
return (int)(stream_ptr - streamdata->stream);
}

63
webrtc/modules/audio_coding/codecs/isac/main/source/arith_routines.h Normal file
View File

@ -0,0 +1,63 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* arith_routines.h
*
* Functions for arithmetic coding.
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_
#include "structs.h"
int WebRtcIsac_EncLogisticMulti2(
Bitstr *streamdata, /* in-/output struct containing bitstream */
int16_t *dataQ7, /* input: data vector */
const uint16_t *env, /* input: side info vector defining the width of the pdf */
const int N, /* input: data vector length */
const int16_t isSWB12kHz); /* if the codec is working in 12kHz bandwidth */
/* returns the number of bytes in the stream */
int WebRtcIsac_EncTerminate(Bitstr *streamdata); /* in-/output struct containing bitstream */
/* returns the number of bytes in the stream so far */
int WebRtcIsac_DecLogisticMulti2(
int16_t *data, /* output: data vector */
Bitstr *streamdata, /* in-/output struct containing bitstream */
const uint16_t *env, /* input: side info vector defining the width of the pdf */
const int16_t *dither, /* input: dither vector */
const int N, /* input: data vector length */
const int16_t isSWB12kHz); /* if the codec is working in 12kHz bandwidth */
void WebRtcIsac_EncHistMulti(
Bitstr *streamdata, /* in-/output struct containing bitstream */
const int *data, /* input: data vector */
const uint16_t **cdf, /* input: array of cdf arrays */
const int N); /* input: data vector length */
int WebRtcIsac_DecHistBisectMulti(
int *data, /* output: data vector */
Bitstr *streamdata, /* in-/output struct containing bitstream */
const uint16_t **cdf, /* input: array of cdf arrays */
const uint16_t *cdf_size, /* input: array of cdf table sizes+1 (power of two: 2^k) */
const int N); /* input: data vector length */
int WebRtcIsac_DecHistOneStepMulti(
int *data, /* output: data vector */
Bitstr *streamdata, /* in-/output struct containing bitstream */
const uint16_t **cdf, /* input: array of cdf arrays */
const uint16_t *init_index,/* input: vector of initial cdf table search entries */
const int N); /* input: data vector length */
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_ */

233
webrtc/modules/audio_coding/codecs/isac/main/source/codec.h Normal file
View File

@ -0,0 +1,233 @@
/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* codec.h
*
* This header file contains the calls to the internal encoder
* and decoder functions.
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_
#include "structs.h"
void WebRtcIsac_ResetBitstream(Bitstr* bit_stream);
int WebRtcIsac_EstimateBandwidth(BwEstimatorstr* bwest_str, Bitstr* streamdata,
size_t packet_size,
uint16_t rtp_seq_number,
uint32_t send_ts, uint32_t arr_ts,
enum IsacSamplingRate encoderSampRate,
enum IsacSamplingRate decoderSampRate);
int WebRtcIsac_DecodeLb(const TransformTables* transform_tables,
float* signal_out,
ISACLBDecStruct* ISACdec_obj,
int16_t* current_framesamples,
int16_t isRCUPayload);
int WebRtcIsac_DecodeRcuLb(float* signal_out, ISACLBDecStruct* ISACdec_obj,
int16_t* current_framesamples);
int WebRtcIsac_EncodeLb(const TransformTables* transform_tables,
float* in,
ISACLBEncStruct* ISACencLB_obj,
int16_t codingMode,
int16_t bottleneckIndex);
int WebRtcIsac_EncodeStoredDataLb(const IsacSaveEncoderData* ISACSavedEnc_obj,
Bitstr* ISACBitStr_obj, int BWnumber,
float scale);
int WebRtcIsac_EncodeStoredDataUb(
const ISACUBSaveEncDataStruct* ISACSavedEnc_obj, Bitstr* bitStream,
int32_t jitterInfo, float scale, enum ISACBandwidth bandwidth);
int16_t WebRtcIsac_GetRedPayloadUb(
const ISACUBSaveEncDataStruct* ISACSavedEncObj, Bitstr* bitStreamObj,
enum ISACBandwidth bandwidth);
/******************************************************************************
* WebRtcIsac_RateAllocation()
* Internal function to perform a rate-allocation for upper and lower-band,
* given a total rate.
*
* Input:
* - inRateBitPerSec : a total bit-rate in bits/sec.
*
* Output:
* - rateLBBitPerSec : a bit-rate allocated to the lower-band
* in bits/sec.
* - rateUBBitPerSec : a bit-rate allocated to the upper-band
* in bits/sec.
*
* Return value : 0 if rate allocation has been successful.
* -1 if failed to allocate rates.
*/
int16_t WebRtcIsac_RateAllocation(int32_t inRateBitPerSec,
double* rateLBBitPerSec,
double* rateUBBitPerSec,
enum ISACBandwidth* bandwidthKHz);
/******************************************************************************
* WebRtcIsac_DecodeUb16()
*
* Decode the upper-band if the codec is in 0-16 kHz mode.
*
* Input/Output:
* -ISACdec_obj : pointer to the upper-band decoder object. The
* bit-stream is stored inside the decoder object.
*
* Output:
* -signal_out : decoded audio, 480 samples 30 ms.
*
* Return value : >0 number of decoded bytes.
* <0 if an error occurred.
*/
int WebRtcIsac_DecodeUb16(const TransformTables* transform_tables,
float* signal_out,
ISACUBDecStruct* ISACdec_obj,
int16_t isRCUPayload);
/******************************************************************************
* WebRtcIsac_DecodeUb12()
*
* Decode the upper-band if the codec is in 0-12 kHz mode.
*
* Input/Output:
* -ISACdec_obj : pointer to the upper-band decoder object. The
* bit-stream is stored inside the decoder object.
*
* Output:
* -signal_out : decoded audio, 480 samples 30 ms.
*
* Return value : >0 number of decoded bytes.
* <0 if an error occurred.
*/
int WebRtcIsac_DecodeUb12(const TransformTables* transform_tables,
float* signal_out,
ISACUBDecStruct* ISACdec_obj,
int16_t isRCUPayload);
/******************************************************************************
* WebRtcIsac_EncodeUb16()
*
* Encode the upper-band if the codec is in 0-16 kHz mode.
*
* Input:
* -in : upper-band audio, 160 samples (10 ms).
*
* Input/Output:
* -ISACdec_obj : pointer to the upper-band encoder object. The
* bit-stream is stored inside the encoder object.
*
* Return value : >0 number of encoded bytes.
* <0 if an error occurred.
*/
int WebRtcIsac_EncodeUb16(const TransformTables* transform_tables,
float* in,
ISACUBEncStruct* ISACenc_obj,
int32_t jitterInfo);
/******************************************************************************
* WebRtcIsac_EncodeUb12()
*
* Encode the upper-band if the codec is in 0-12 kHz mode.
*
* Input:
* -in : upper-band audio, 160 samples (10 ms).
*
* Input/Output:
* -ISACdec_obj : pointer to the upper-band encoder object. The
* bit-stream is stored inside the encoder object.
*
* Return value : >0 number of encoded bytes.
* <0 if an error occurred.
*/
int WebRtcIsac_EncodeUb12(const TransformTables* transform_tables,
float* in,
ISACUBEncStruct* ISACenc_obj,
int32_t jitterInfo);
/************************** initialization functions *************************/
void WebRtcIsac_InitMasking(MaskFiltstr* maskdata);
void WebRtcIsac_InitPreFilterbank(PreFiltBankstr* prefiltdata);
void WebRtcIsac_InitPostFilterbank(PostFiltBankstr* postfiltdata);
void WebRtcIsac_InitPitchFilter(PitchFiltstr* pitchfiltdata);
void WebRtcIsac_InitPitchAnalysis(PitchAnalysisStruct* State);
/**************************** transform functions ****************************/
void WebRtcIsac_InitTransform(TransformTables* tables);
void WebRtcIsac_Time2Spec(const TransformTables* tables,
double* inre1,
double* inre2,
int16_t* outre,
int16_t* outim,
FFTstr* fftstr_obj);
void WebRtcIsac_Spec2time(const TransformTables* tables,
double* inre,
double* inim,
double* outre1,
double* outre2,
FFTstr* fftstr_obj);
/******************************* filter functions ****************************/
void WebRtcIsac_AllPoleFilter(double* InOut, double* Coef, size_t lengthInOut,
int orderCoef);
void WebRtcIsac_AllZeroFilter(double* In, double* Coef, size_t lengthInOut,
int orderCoef, double* Out);
void WebRtcIsac_ZeroPoleFilter(double* In, double* ZeroCoef, double* PoleCoef,
size_t lengthInOut, int orderCoef, double* Out);
/***************************** filterbank functions **************************/
void WebRtcIsac_SplitAndFilterFloat(float* in, float* LP, float* HP,
double* LP_la, double* HP_la,
PreFiltBankstr* prefiltdata);
void WebRtcIsac_FilterAndCombineFloat(float* InLP, float* InHP, float* Out,
PostFiltBankstr* postfiltdata);
/************************* normalized lattice filters ************************/
void WebRtcIsac_NormLatticeFilterMa(int orderCoef, float* stateF, float* stateG,
float* lat_in, double* filtcoeflo,
double* lat_out);
void WebRtcIsac_NormLatticeFilterAr(int orderCoef, float* stateF, float* stateG,
double* lat_in, double* lo_filt_coef,
float* lat_out);
void WebRtcIsac_Dir2Lat(double* a, int orderCoef, float* sth, float* cth);
void WebRtcIsac_AutoCorr(double* r, const double* x, size_t N, size_t order);
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_ */

708
webrtc/modules/audio_coding/codecs/isac/main/source/encode_lpc_swb.c Normal file
View File

@ -0,0 +1,708 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* code_LPC_UB.c
*
* This file contains definition of functions used to
* encode LPC parameters (Shape & gain) of the upper band.
*
*/
#include "encode_lpc_swb.h"
#include <math.h>
#include <stdio.h>
#include <string.h>
#include "lpc_gain_swb_tables.h"
#include "lpc_shape_swb12_tables.h"
#include "lpc_shape_swb16_tables.h"
#include "settings.h"
#include "webrtc/typedefs.h"
/******************************************************************************
* WebRtcIsac_RemoveLarMean()
*
* Remove the means from LAR coefficients.
*
* Input:
* -lar : pointer to lar vectors. LAR vectors are
* concatenated.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -lar : pointer to mean-removed LAR:s.
*
*
*/
int16_t
WebRtcIsac_RemoveLarMean(
double* lar,
int16_t bandwidth)
{
int16_t coeffCntr;
int16_t vecCntr;
int16_t numVec;
const double* meanLAR;
switch(bandwidth)
{
case isac12kHz:
{
numVec = UB_LPC_VEC_PER_FRAME;
meanLAR = WebRtcIsac_kMeanLarUb12;
break;
}
case isac16kHz:
{
numVec = UB16_LPC_VEC_PER_FRAME;
meanLAR = WebRtcIsac_kMeanLarUb16;
break;
}
default:
return -1;
}
for(vecCntr = 0; vecCntr < numVec; vecCntr++)
{
for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++)
{
// REMOVE MEAN
*lar++ -= meanLAR[coeffCntr];
}
}
return 0;
}
/******************************************************************************
* WebRtcIsac_DecorrelateIntraVec()
*
* Remove the correlation amonge the components of LAR vectors. If LAR vectors
* of one frame are put in a matrix where each column is a LAR vector of a
* sub-frame, then this is equivalent to multiplying the LAR matrix with
* a decorrelting mtrix from left.
*
* Input:
* -inLar : pointer to mean-removed LAR vecrtors.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -out : decorrelated LAR vectors.
*/
int16_t
WebRtcIsac_DecorrelateIntraVec(
const double* data,
double* out,
int16_t bandwidth)
{
const double* ptrData;
const double* ptrRow;
int16_t rowCntr;
int16_t colCntr;
int16_t larVecCntr;
int16_t numVec;
const double* decorrMat;
switch(bandwidth)
{
case isac12kHz:
{
decorrMat = &WebRtcIsac_kIntraVecDecorrMatUb12[0][0];
numVec = UB_LPC_VEC_PER_FRAME;
break;
}
case isac16kHz:
{
decorrMat = &WebRtcIsac_kIintraVecDecorrMatUb16[0][0];
numVec = UB16_LPC_VEC_PER_FRAME;
break;
}
default:
return -1;
}
//
// decorrMat * data
//
// data is assumed to contain 'numVec' of LAR
// vectors (mean removed) each of dimension 'UB_LPC_ORDER'
// concatenated one after the other.
//
ptrData = data;
for(larVecCntr = 0; larVecCntr < numVec; larVecCntr++)
{
for(rowCntr = 0; rowCntr < UB_LPC_ORDER; rowCntr++)
{
ptrRow = &decorrMat[rowCntr * UB_LPC_ORDER];
*out = 0;
for(colCntr = 0; colCntr < UB_LPC_ORDER; colCntr++)
{
*out += ptrData[colCntr] * ptrRow[colCntr];
}
out++;
}
ptrData += UB_LPC_ORDER;
}
return 0;
}
/******************************************************************************
* WebRtcIsac_DecorrelateInterVec()
*
* Remover the correlation among mean-removed LAR vectors. If LAR vectors
* of one frame are put in a matrix where each column is a LAR vector of a
* sub-frame, then this is equivalent to multiplying the LAR matrix with
* a decorrelting mtrix from right.
*
* Input:
* -data : pointer to matrix of LAR vectors. The matrix
* is stored column-wise.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -out : decorrelated LAR vectors.
*/
int16_t
WebRtcIsac_DecorrelateInterVec(
const double* data,
double* out,
int16_t bandwidth)
{
int16_t coeffCntr;
int16_t rowCntr;
int16_t colCntr;
const double* decorrMat;
int16_t interVecDim;
switch(bandwidth)
{
case isac12kHz:
{
decorrMat = &WebRtcIsac_kInterVecDecorrMatUb12[0][0];
interVecDim = UB_LPC_VEC_PER_FRAME;
break;
}
case isac16kHz:
{
decorrMat = &WebRtcIsac_kInterVecDecorrMatUb16[0][0];
interVecDim = UB16_LPC_VEC_PER_FRAME;
break;
}
default:
return -1;
}
//
// data * decorrMat
//
// data is of size 'interVecDim' * 'UB_LPC_ORDER'
// That is 'interVecDim' of LAR vectors (mean removed)
// in columns each of dimension 'UB_LPC_ORDER'.
// matrix is stored column-wise.
//
for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++)
{
for(colCntr = 0; colCntr < interVecDim; colCntr++)
{
out[coeffCntr + colCntr * UB_LPC_ORDER] = 0;
for(rowCntr = 0; rowCntr < interVecDim; rowCntr++)
{
out[coeffCntr + colCntr * UB_LPC_ORDER] +=
data[coeffCntr + rowCntr * UB_LPC_ORDER] *
decorrMat[rowCntr * interVecDim + colCntr];
}
}
}
return 0;
}
/******************************************************************************
* WebRtcIsac_QuantizeUncorrLar()
*
* Quantize the uncorrelated parameters.
*
* Input:
* -data : uncorrelated LAR vectors.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -data : quantized version of the input.
* -idx : pointer to quantization indices.
*/
double
WebRtcIsac_QuantizeUncorrLar(
double* data,
int* recIdx,
int16_t bandwidth)
{
int16_t cntr;
int32_t idx;
int16_t interVecDim;
const double* leftRecPoint;
double quantizationStepSize;
const int16_t* numQuantCell;
switch(bandwidth)
{
case isac12kHz:
{
leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb12;
quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb12;
numQuantCell = WebRtcIsac_kLpcShapeNumRecPointUb12;
interVecDim = UB_LPC_VEC_PER_FRAME;
break;
}
case isac16kHz:
{
leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb16;
quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb16;
numQuantCell = WebRtcIsac_kLpcShapeNumRecPointUb16;
interVecDim = UB16_LPC_VEC_PER_FRAME;
break;
}
default:
return -1;
}
//
// Quantize the parametrs.
//
for(cntr = 0; cntr < UB_LPC_ORDER * interVecDim; cntr++)
{
idx = (int32_t)floor((*data - leftRecPoint[cntr]) /
quantizationStepSize + 0.5);
if(idx < 0)
{
idx = 0;
}
else if(idx >= numQuantCell[cntr])
{
idx = numQuantCell[cntr] - 1;
}
*data++ = leftRecPoint[cntr] + idx * quantizationStepSize;
*recIdx++ = idx;
}
return 0;
}
/******************************************************************************
* WebRtcIsac_DequantizeLpcParam()
*
* Get the quantized value of uncorrelated LARs given the quantization indices.
*
* Input:
* -idx : pointer to quantiztion indices.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -out : pointer to quantized values.
*/
int16_t
WebRtcIsac_DequantizeLpcParam(
const int* idx,
double* out,
int16_t bandwidth)
{
int16_t cntr;
int16_t interVecDim;
const double* leftRecPoint;
double quantizationStepSize;
switch(bandwidth)
{
case isac12kHz:
{
leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb12;
quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb12;
interVecDim = UB_LPC_VEC_PER_FRAME;
break;
}
case isac16kHz:
{
leftRecPoint = WebRtcIsac_kLpcShapeLeftRecPointUb16;
quantizationStepSize = WebRtcIsac_kLpcShapeQStepSizeUb16;
interVecDim = UB16_LPC_VEC_PER_FRAME;
break;
}
default:
return -1;
}
//
// Dequantize given the quantization indices
//
for(cntr = 0; cntr < UB_LPC_ORDER * interVecDim; cntr++)
{
*out++ = leftRecPoint[cntr] + *idx++ * quantizationStepSize;
}
return 0;
}
/******************************************************************************
* WebRtcIsac_CorrelateIntraVec()
*
* This is the inverse of WebRtcIsac_DecorrelateIntraVec().
*
* Input:
* -data : uncorrelated parameters.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -out : correlated parametrs.
*/
int16_t
WebRtcIsac_CorrelateIntraVec(
const double* data,
double* out,
int16_t bandwidth)
{
int16_t vecCntr;
int16_t rowCntr;
int16_t colCntr;
int16_t numVec;
const double* ptrData;
const double* intraVecDecorrMat;
switch(bandwidth)
{
case isac12kHz:
{
numVec = UB_LPC_VEC_PER_FRAME;
intraVecDecorrMat = &WebRtcIsac_kIntraVecDecorrMatUb12[0][0];
break;
}
case isac16kHz:
{
numVec = UB16_LPC_VEC_PER_FRAME;
intraVecDecorrMat = &WebRtcIsac_kIintraVecDecorrMatUb16[0][0];
break;
}
default:
return -1;
}
ptrData = data;
for(vecCntr = 0; vecCntr < numVec; vecCntr++)
{
for(colCntr = 0; colCntr < UB_LPC_ORDER; colCntr++)
{
*out = 0;
for(rowCntr = 0; rowCntr < UB_LPC_ORDER; rowCntr++)
{
*out += ptrData[rowCntr] *
intraVecDecorrMat[rowCntr * UB_LPC_ORDER + colCntr];
}
out++;
}
ptrData += UB_LPC_ORDER;
}
return 0;
}
/******************************************************************************
* WebRtcIsac_CorrelateInterVec()
*
* This is the inverse of WebRtcIsac_DecorrelateInterVec().
*
* Input:
* -data
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -out : correlated parametrs.
*/
int16_t
WebRtcIsac_CorrelateInterVec(
const double* data,
double* out,
int16_t bandwidth)
{
int16_t coeffCntr;
int16_t rowCntr;
int16_t colCntr;
int16_t interVecDim;
double myVec[UB16_LPC_VEC_PER_FRAME];
const double* interVecDecorrMat;
switch(bandwidth)
{
case isac12kHz:
{
interVecDim = UB_LPC_VEC_PER_FRAME;
interVecDecorrMat = &WebRtcIsac_kInterVecDecorrMatUb12[0][0];
break;
}
case isac16kHz:
{
interVecDim = UB16_LPC_VEC_PER_FRAME;
interVecDecorrMat = &WebRtcIsac_kInterVecDecorrMatUb16[0][0];
break;
}
default:
return -1;
}
for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++)
{
for(rowCntr = 0; rowCntr < interVecDim; rowCntr++)
{
myVec[rowCntr] = 0;
for(colCntr = 0; colCntr < interVecDim; colCntr++)
{
myVec[rowCntr] += data[coeffCntr + colCntr * UB_LPC_ORDER] * //*ptrData *
interVecDecorrMat[rowCntr * interVecDim + colCntr];
//ptrData += UB_LPC_ORDER;
}
}
for(rowCntr = 0; rowCntr < interVecDim; rowCntr++)
{
out[coeffCntr + rowCntr * UB_LPC_ORDER] = myVec[rowCntr];
}
}
return 0;
}
/******************************************************************************
* WebRtcIsac_AddLarMean()
*
* This is the inverse of WebRtcIsac_RemoveLarMean()
*
* Input:
* -data : pointer to mean-removed LAR:s.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -data : pointer to LARs.
*/
int16_t
WebRtcIsac_AddLarMean(
double* data,
int16_t bandwidth)
{
int16_t coeffCntr;
int16_t vecCntr;
int16_t numVec;
const double* meanLAR;
switch(bandwidth)
{
case isac12kHz:
{
numVec = UB_LPC_VEC_PER_FRAME;
meanLAR = WebRtcIsac_kMeanLarUb12;
break;
}
case isac16kHz:
{
numVec = UB16_LPC_VEC_PER_FRAME;
meanLAR = WebRtcIsac_kMeanLarUb16;
break;
}
default:
return -1;
}
for(vecCntr = 0; vecCntr < numVec; vecCntr++)
{
for(coeffCntr = 0; coeffCntr < UB_LPC_ORDER; coeffCntr++)
{
*data++ += meanLAR[coeffCntr];
}
}
return 0;
}
/******************************************************************************
* WebRtcIsac_ToLogDomainRemoveMean()
*
* Transform the LPC gain to log domain then remove the mean value.
*
* Input:
* -lpcGain : pointer to LPC Gain, expecting 6 LPC gains
*
* Output:
* -lpcGain : mean-removed in log domain.
*/
int16_t
WebRtcIsac_ToLogDomainRemoveMean(
double* data)
{
int16_t coeffCntr;
for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++)
{
data[coeffCntr] = log(data[coeffCntr]) - WebRtcIsac_kMeanLpcGain;
}
return 0;
}
/******************************************************************************
* WebRtcIsac_DecorrelateLPGain()
*
* Decorrelate LPC gains. There are 6 LPC Gains per frame. This is like
* multiplying gain vector with decorrelating matrix.
*
* Input:
* -data : LPC gain in log-domain with mean removed.
*
* Output:
* -out : decorrelated parameters.
*/
int16_t WebRtcIsac_DecorrelateLPGain(
const double* data,
double* out)
{
int16_t rowCntr;
int16_t colCntr;
for(colCntr = 0; colCntr < UB_LPC_GAIN_DIM; colCntr++)
{
*out = 0;
for(rowCntr = 0; rowCntr < UB_LPC_GAIN_DIM; rowCntr++)
{
*out += data[rowCntr] * WebRtcIsac_kLpcGainDecorrMat[rowCntr][colCntr];
}
out++;
}
return 0;
}
/******************************************************************************
* WebRtcIsac_QuantizeLpcGain()
*
* Quantize the decorrelated log-domain gains.
*
* Input:
* -lpcGain : uncorrelated LPC gains.
*
* Output:
* -idx : quantization indices
* -lpcGain : quantized value of the inpt.
*/
double WebRtcIsac_QuantizeLpcGain(
double* data,
int* idx)
{
int16_t coeffCntr;
for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++)
{
*idx = (int)floor((*data - WebRtcIsac_kLeftRecPointLpcGain[coeffCntr]) /
WebRtcIsac_kQSizeLpcGain + 0.5);
if(*idx < 0)
{
*idx = 0;
}
else if(*idx >= WebRtcIsac_kNumQCellLpcGain[coeffCntr])
{
*idx = WebRtcIsac_kNumQCellLpcGain[coeffCntr] - 1;
}
*data = WebRtcIsac_kLeftRecPointLpcGain[coeffCntr] + *idx *
WebRtcIsac_kQSizeLpcGain;
data++;
idx++;
}
return 0;
}
/******************************************************************************
* WebRtcIsac_DequantizeLpcGain()
*
* Get the quantized values given the quantization indices.
*
* Input:
* -idx : pointer to quantization indices.
*
* Output:
* -lpcGains : quantized values of the given parametes.
*/
int16_t WebRtcIsac_DequantizeLpcGain(
const int* idx,
double* out)
{
int16_t coeffCntr;
for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++)
{
*out = WebRtcIsac_kLeftRecPointLpcGain[coeffCntr] + *idx *
WebRtcIsac_kQSizeLpcGain;
out++;
idx++;
}
return 0;
}
/******************************************************************************
* WebRtcIsac_CorrelateLpcGain()
*
* This is the inverse of WebRtcIsac_DecorrelateLPGain().
*
* Input:
* -data : decorrelated parameters.
*
* Output:
* -out : correlated parameters.
*/
int16_t WebRtcIsac_CorrelateLpcGain(
const double* data,
double* out)
{
int16_t rowCntr;
int16_t colCntr;
for(rowCntr = 0; rowCntr < UB_LPC_GAIN_DIM; rowCntr++)
{
*out = 0;
for(colCntr = 0; colCntr < UB_LPC_GAIN_DIM; colCntr++)
{
*out += WebRtcIsac_kLpcGainDecorrMat[rowCntr][colCntr] * data[colCntr];
}
out++;
}
return 0;
}
/******************************************************************************
* WebRtcIsac_AddMeanToLinearDomain()
*
* This is the inverse of WebRtcIsac_ToLogDomainRemoveMean().
*
* Input:
* -lpcGain : LPC gain in log-domain & mean removed
*
* Output:
* -lpcGain : LPC gain in normal domain.
*/
int16_t WebRtcIsac_AddMeanToLinearDomain(
double* lpcGains)
{
int16_t coeffCntr;
for(coeffCntr = 0; coeffCntr < UB_LPC_GAIN_DIM; coeffCntr++)
{
lpcGains[coeffCntr] = exp(lpcGains[coeffCntr] + WebRtcIsac_kMeanLpcGain);
}
return 0;
}

282
webrtc/modules/audio_coding/codecs/isac/main/source/encode_lpc_swb.h Normal file
View File

@ -0,0 +1,282 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* encode_lpc_swb.h
*
* This file contains declaration of functions used to
* encode LPC parameters (Shape & gain) of the upper band.
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENCODE_LPC_SWB_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENCODE_LPC_SWB_H_
#include "settings.h"
#include "structs.h"
#include "webrtc/typedefs.h"
/******************************************************************************
* WebRtcIsac_RemoveLarMean()
*
* Remove the means from LAR coefficients.
*
* Input:
* -lar : pointer to lar vectors. LAR vectors are
* concatenated.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -lar : pointer to mean-removed LAR:s.
*
*
*/
int16_t WebRtcIsac_RemoveLarMean(
double* lar,
int16_t bandwidth);
/******************************************************************************
* WebRtcIsac_DecorrelateIntraVec()
*
* Remove the correlation amonge the components of LAR vectors. If LAR vectors
* of one frame are put in a matrix where each column is a LAR vector of a
* sub-frame, then this is equivalent to multiplying the LAR matrix with
* a decorrelting mtrix from left.
*
* Input:
* -inLar : pointer to mean-removed LAR vecrtors.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -out : decorrelated LAR vectors.
*/
int16_t WebRtcIsac_DecorrelateIntraVec(
const double* inLAR,
double* out,
int16_t bandwidth);
/******************************************************************************
* WebRtcIsac_DecorrelateInterVec()
*
* Remover the correlation among mean-removed LAR vectors. If LAR vectors
* of one frame are put in a matrix where each column is a LAR vector of a
* sub-frame, then this is equivalent to multiplying the LAR matrix with
* a decorrelting mtrix from right.
*
* Input:
* -data : pointer to matrix of LAR vectors. The matrix
* is stored column-wise.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -out : decorrelated LAR vectors.
*/
int16_t WebRtcIsac_DecorrelateInterVec(
const double* data,
double* out,
int16_t bandwidth);
/******************************************************************************
* WebRtcIsac_QuantizeUncorrLar()
*
* Quantize the uncorrelated parameters.
*
* Input:
* -data : uncorrelated LAR vectors.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -data : quantized version of the input.
* -idx : pointer to quantization indices.
*/
double WebRtcIsac_QuantizeUncorrLar(
double* data,
int* idx,
int16_t bandwidth);
/******************************************************************************
* WebRtcIsac_CorrelateIntraVec()
*
* This is the inverse of WebRtcIsac_DecorrelateIntraVec().
*
* Input:
* -data : uncorrelated parameters.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -out : correlated parametrs.
*/
int16_t WebRtcIsac_CorrelateIntraVec(
const double* data,
double* out,
int16_t bandwidth);
/******************************************************************************
* WebRtcIsac_CorrelateInterVec()
*
* This is the inverse of WebRtcIsac_DecorrelateInterVec().
*
* Input:
* -data
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -out : correlated parametrs.
*/
int16_t WebRtcIsac_CorrelateInterVec(
const double* data,
double* out,
int16_t bandwidth);
/******************************************************************************
* WebRtcIsac_AddLarMean()
*
* This is the inverse of WebRtcIsac_RemoveLarMean()
*
* Input:
* -data : pointer to mean-removed LAR:s.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -data : pointer to LARs.
*/
int16_t WebRtcIsac_AddLarMean(
double* data,
int16_t bandwidth);
/******************************************************************************
* WebRtcIsac_DequantizeLpcParam()
*
* Get the quantized value of uncorrelated LARs given the quantization indices.
*
* Input:
* -idx : pointer to quantiztion indices.
* -bandwidth : indicates if the given LAR vectors belong
* to SWB-12kHz or SWB-16kHz.
*
* Output:
* -out : pointer to quantized values.
*/
int16_t WebRtcIsac_DequantizeLpcParam(
const int* idx,
double* out,
int16_t bandwidth);
/******************************************************************************
* WebRtcIsac_ToLogDomainRemoveMean()
*
* Transform the LPC gain to log domain then remove the mean value.
*
* Input:
* -lpcGain : pointer to LPC Gain, expecting 6 LPC gains
*
* Output:
* -lpcGain : mean-removed in log domain.
*/
int16_t WebRtcIsac_ToLogDomainRemoveMean(
double* lpGains);
/******************************************************************************
* WebRtcIsac_DecorrelateLPGain()
*
* Decorrelate LPC gains. There are 6 LPC Gains per frame. This is like
* multiplying gain vector with decorrelating matrix.
*
* Input:
* -data : LPC gain in log-domain with mean removed.
*
* Output:
* -out : decorrelated parameters.
*/
int16_t WebRtcIsac_DecorrelateLPGain(
const double* data,
double* out);
/******************************************************************************
* WebRtcIsac_QuantizeLpcGain()
*
* Quantize the decorrelated log-domain gains.
*
* Input:
* -lpcGain : uncorrelated LPC gains.
*
* Output:
* -idx : quantization indices
* -lpcGain : quantized value of the inpt.
*/
double WebRtcIsac_QuantizeLpcGain(
double* lpGains,
int* idx);
/******************************************************************************
* WebRtcIsac_DequantizeLpcGain()
*
* Get the quantized values given the quantization indices.
*
* Input:
* -idx : pointer to quantization indices.
*
* Output:
* -lpcGains : quantized values of the given parametes.
*/
int16_t WebRtcIsac_DequantizeLpcGain(
const int* idx,
double* lpGains);
/******************************************************************************
* WebRtcIsac_CorrelateLpcGain()
*
* This is the inverse of WebRtcIsac_DecorrelateLPGain().
*
* Input:
* -data : decorrelated parameters.
*
* Output:
* -out : correlated parameters.
*/
int16_t WebRtcIsac_CorrelateLpcGain(
const double* data,
double* out);
/******************************************************************************
* WebRtcIsac_AddMeanToLinearDomain()
*
* This is the inverse of WebRtcIsac_ToLogDomainRemoveMean().
*
* Input:
* -lpcGain : LPC gain in log-domain & mean removed
*
* Output:
* -lpcGain : LPC gain in normal domain.
*/
int16_t WebRtcIsac_AddMeanToLinearDomain(
double* lpcGains);
#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENCODE_LPC_SWB_H_

2066
webrtc/modules/audio_coding/codecs/isac/main/source/entropy_coding.c Normal file
View File

File diff suppressed because it is too large Load Diff

343
webrtc/modules/audio_coding/codecs/isac/main/source/entropy_coding.h Normal file
View File

@ -0,0 +1,343 @@
/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* entropy_coding.h
*
* This header file declares all of the functions used to arithmetically
* encode the iSAC bistream
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENTROPY_CODING_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENTROPY_CODING_H_
#include "settings.h"
#include "structs.h"
/******************************************************************************
* WebRtcIsac_DecodeSpec()
* Decode real and imaginary part of the DFT coefficients, given a bit-stream.
* The decoded DFT coefficient can be transformed to time domain by
* WebRtcIsac_Time2Spec().
*
* Input:
* - streamdata : pointer to a stucture containg the encoded
* data and theparameters needed for entropy
* coding.
* - AvgPitchGain_Q12 : average pitch-gain of the frame. This is only
* relevant for 0-4 kHz band, and the input value is
* not used in other bands.
* - band : specifies which band's DFT should be decoded.
*
* Output:
* - *fr : pointer to a buffer where the real part of DFT
* coefficients are written to.
* - *fi : pointer to a buffer where the imaginary part
* of DFT coefficients are written to.
*
* Return value : < 0 if an error occures
* 0 if succeeded.
*/
int WebRtcIsac_DecodeSpec(Bitstr* streamdata, int16_t AvgPitchGain_Q12,
enum ISACBand band, double* fr, double* fi);
/******************************************************************************
* WebRtcIsac_EncodeSpec()
* Encode real and imaginary part of the DFT coefficients into the given
* bit-stream.
*
* Input:
* - *fr : pointer to a buffer where the real part of DFT
* coefficients are written to.
* - *fi : pointer to a buffer where the imaginary part
* of DFT coefficients are written to.
* - AvgPitchGain_Q12 : average pitch-gain of the frame. This is only
* relevant for 0-4 kHz band, and the input value is
* not used in other bands.
* - band : specifies which band's DFT should be decoded.
*
* Output:
* - streamdata : pointer to a stucture containg the encoded
* data and theparameters needed for entropy
* coding.
*
* Return value : < 0 if an error occures
* 0 if succeeded.
*/
int WebRtcIsac_EncodeSpec(const int16_t* fr, const int16_t* fi,
int16_t AvgPitchGain_Q12, enum ISACBand band,
Bitstr* streamdata);
/* decode & dequantize LPC Coef */
int WebRtcIsac_DecodeLpcCoef(Bitstr* streamdata, double* LPCCoef);
int WebRtcIsac_DecodeLpcCoefUB(Bitstr* streamdata, double* lpcVecs,
double* percepFilterGains,
int16_t bandwidth);
int WebRtcIsac_DecodeLpc(Bitstr* streamdata, double* LPCCoef_lo,
double* LPCCoef_hi);
/* quantize & code LPC Coef */
void WebRtcIsac_EncodeLpcLb(double* LPCCoef_lo, double* LPCCoef_hi,
Bitstr* streamdata, IsacSaveEncoderData* encData);
void WebRtcIsac_EncodeLpcGainLb(double* LPCCoef_lo, double* LPCCoef_hi,
Bitstr* streamdata,
IsacSaveEncoderData* encData);
/******************************************************************************
* WebRtcIsac_EncodeLpcUB()
* Encode LPC parameters, given as A-polynomial, of upper-band. The encoding
* is performed in LAR domain.
* For the upper-band, we compute and encode LPC of some sub-frames, LPC of
* other sub-frames are computed by linear interpolation, in LAR domain. This
* function performs the interpolation and returns the LPC of all sub-frames.
*
* Inputs:
* - lpcCoef : a buffer containing A-polynomials of sub-frames
* (excluding first coefficient that is 1).
* - bandwidth : specifies if the codec is operating at 0-12 kHz
* or 0-16 kHz mode.
*
* Input/output:
* - streamdata : pointer to a structure containing the encoded
* data and the parameters needed for entropy
* coding.
*
* Output:
* - interpolLPCCoeff : Decoded and interpolated LPC (A-polynomial)
* of all sub-frames.
* If LP analysis is of order K, and there are N
* sub-frames then this is a buffer of size
* (k + 1) * N, each vector starts with the LPC gain
* of the corresponding sub-frame. The LPC gains
* are encoded and inserted after this function is
* called. The first A-coefficient which is 1 is not
* included.
*
* Return value : 0 if encoding is successful,
* <0 if failed to encode.
*/
int16_t WebRtcIsac_EncodeLpcUB(double* lpcCoeff, Bitstr* streamdata,
double* interpolLPCCoeff,
int16_t bandwidth,
ISACUBSaveEncDataStruct* encData);
/******************************************************************************
* WebRtcIsac_DecodeInterpolLpcUb()
* Decode LPC coefficients and interpolate to get the coefficients fo all
* sub-frmaes.
*
* Inputs:
* - bandwidth : spepecifies if the codec is in 0-12 kHz or
* 0-16 kHz mode.
*
* Input/output:
* - streamdata : pointer to a stucture containg the encoded
* data and theparameters needed for entropy
* coding.
*
* Output:
* - percepFilterParam : Decoded and interpolated LPC (A-polynomial) of
* all sub-frames.
* If LP analysis is of order K, and there are N
* sub-frames then this is a buffer of size
* (k + 1) * N, each vector starts with the LPC gain
* of the corresponding sub-frame. The LPC gains
* are encoded and inserted after this function is
* called. The first A-coefficient which is 1 is not
* included.
*
* Return value : 0 if encoding is successful,
* <0 if failed to encode.
*/
int16_t WebRtcIsac_DecodeInterpolLpcUb(Bitstr* streamdata,
double* percepFilterParam,
int16_t bandwidth);
/* Decode & dequantize RC */
int WebRtcIsac_DecodeRc(Bitstr* streamdata, int16_t* RCQ15);
/* Quantize & code RC */
void WebRtcIsac_EncodeRc(int16_t* RCQ15, Bitstr* streamdata);
/* Decode & dequantize squared Gain */
int WebRtcIsac_DecodeGain2(Bitstr* streamdata, int32_t* Gain2);
/* Quantize & code squared Gain (input is squared gain) */
int WebRtcIsac_EncodeGain2(int32_t* gain2, Bitstr* streamdata);
void WebRtcIsac_EncodePitchGain(int16_t* PitchGains_Q12,
Bitstr* streamdata,
IsacSaveEncoderData* encData);
void WebRtcIsac_EncodePitchLag(double* PitchLags,
int16_t* PitchGain_Q12,
Bitstr* streamdata,
IsacSaveEncoderData* encData);
int WebRtcIsac_DecodePitchGain(Bitstr* streamdata,
int16_t* PitchGain_Q12);
int WebRtcIsac_DecodePitchLag(Bitstr* streamdata, int16_t* PitchGain_Q12,
double* PitchLag);
int WebRtcIsac_DecodeFrameLen(Bitstr* streamdata, int16_t* framelength);
int WebRtcIsac_EncodeFrameLen(int16_t framelength, Bitstr* streamdata);
int WebRtcIsac_DecodeSendBW(Bitstr* streamdata, int16_t* BWno);
void WebRtcIsac_EncodeReceiveBw(int* BWno, Bitstr* streamdata);
/* Step-down */
void WebRtcIsac_Poly2Rc(double* a, int N, double* RC);
/* Step-up */
void WebRtcIsac_Rc2Poly(double* RC, int N, double* a);
void WebRtcIsac_TranscodeLPCCoef(double* LPCCoef_lo, double* LPCCoef_hi,
int* index_g);
/******************************************************************************
* WebRtcIsac_EncodeLpcGainUb()
* Encode LPC gains of sub-Frames.
*
* Input/outputs:
* - lpGains : a buffer which contains 'SUBFRAME' number of
* LP gains to be encoded. The input values are
* overwritten by the quantized values.
* - streamdata : pointer to a stucture containg the encoded
* data and theparameters needed for entropy
* coding.
*
* Output:
* - lpcGainIndex : quantization indices for lpc gains, these will
* be stored to be used for FEC.
*/
void WebRtcIsac_EncodeLpcGainUb(double* lpGains, Bitstr* streamdata,
int* lpcGainIndex);
/******************************************************************************
* WebRtcIsac_EncodeLpcGainUb()
* Store LPC gains of sub-Frames in 'streamdata'.
*
* Input:
* - lpGains : a buffer which contains 'SUBFRAME' number of
* LP gains to be encoded.
* Input/outputs:
* - streamdata : pointer to a stucture containg the encoded
* data and theparameters needed for entropy
* coding.
*
*/
void WebRtcIsac_StoreLpcGainUb(double* lpGains, Bitstr* streamdata);
/******************************************************************************
* WebRtcIsac_DecodeLpcGainUb()
* Decode the LPC gain of sub-frames.
*
* Input/output:
* - streamdata : pointer to a stucture containg the encoded
* data and theparameters needed for entropy
* coding.
*
* Output:
* - lpGains : a buffer where decoded LPC gians will be stored.
*
* Return value : 0 if succeeded.
* <0 if failed.
*/
int16_t WebRtcIsac_DecodeLpcGainUb(double* lpGains, Bitstr* streamdata);
/******************************************************************************
* WebRtcIsac_EncodeBandwidth()
* Encode if the bandwidth of encoded audio is 0-12 kHz or 0-16 kHz.
*
* Input:
* - bandwidth : an enumerator specifying if the codec in is
* 0-12 kHz or 0-16 kHz mode.
*
* Input/output:
* - streamdata : pointer to a stucture containg the encoded
* data and theparameters needed for entropy
* coding.
*
* Return value : 0 if succeeded.
* <0 if failed.
*/
int16_t WebRtcIsac_EncodeBandwidth(enum ISACBandwidth bandwidth,
Bitstr* streamData);
/******************************************************************************
* WebRtcIsac_DecodeBandwidth()
* Decode the bandwidth of the encoded audio, i.e. if the bandwidth is 0-12 kHz
* or 0-16 kHz.
*
* Input/output:
* - streamdata : pointer to a stucture containg the encoded
* data and theparameters needed for entropy
* coding.
*
* Output:
* - bandwidth : an enumerator specifying if the codec is in
* 0-12 kHz or 0-16 kHz mode.
*
* Return value : 0 if succeeded.
* <0 if failed.
*/
int16_t WebRtcIsac_DecodeBandwidth(Bitstr* streamData,
enum ISACBandwidth* bandwidth);
/******************************************************************************
* WebRtcIsac_EncodeJitterInfo()
* Decode the jitter information.
*
* Input/output:
* - streamdata : pointer to a stucture containg the encoded
* data and theparameters needed for entropy
* coding.
*
* Input:
* - jitterInfo : one bit of info specifying if the channel is
* in high/low jitter. Zero indicates low jitter
* and one indicates high jitter.
*
* Return value : 0 if succeeded.
* <0 if failed.
*/
int16_t WebRtcIsac_EncodeJitterInfo(int32_t jitterIndex,
Bitstr* streamData);
/******************************************************************************
* WebRtcIsac_DecodeJitterInfo()
* Decode the jitter information.
*
* Input/output:
* - streamdata : pointer to a stucture containg the encoded
* data and theparameters needed for entropy
* coding.
*
* Output:
* - jitterInfo : one bit of info specifying if the channel is
* in high/low jitter. Zero indicates low jitter
* and one indicates high jitter.
*
* Return value : 0 if succeeded.
* <0 if failed.
*/
int16_t WebRtcIsac_DecodeJitterInfo(Bitstr* streamData,
int32_t* jitterInfo);
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ENTROPY_CODING_H_ */

535
webrtc/modules/audio_coding/codecs/isac/main/source/lpc_analysis.c Normal file
View File

@ -0,0 +1,535 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "lpc_analysis.h"
#include "settings.h"
#include "codec.h"
#include "entropy_coding.h"
#include <math.h>
#include <string.h>
#define LEVINSON_EPS 1.0e-10
/* window */
/* Matlab generation code:
* t = (1:256)/257; r = 1-(1-t).^.45; w = sin(r*pi).^3; w = w/sum(w); plot((1:256)/8, w); grid;
* for k=1:16, fprintf(1, '%.8f, ', w(k*16 + (-15:0))); fprintf(1, '\n'); end
*/
static const double kLpcCorrWindow[WINLEN] = {
0.00000000, 0.00000001, 0.00000004, 0.00000010, 0.00000020,
0.00000035, 0.00000055, 0.00000083, 0.00000118, 0.00000163,
0.00000218, 0.00000283, 0.00000361, 0.00000453, 0.00000558, 0.00000679,
0.00000817, 0.00000973, 0.00001147, 0.00001342, 0.00001558,
0.00001796, 0.00002058, 0.00002344, 0.00002657, 0.00002997,
0.00003365, 0.00003762, 0.00004190, 0.00004651, 0.00005144, 0.00005673,
0.00006236, 0.00006837, 0.00007476, 0.00008155, 0.00008875,
0.00009636, 0.00010441, 0.00011290, 0.00012186, 0.00013128,
0.00014119, 0.00015160, 0.00016252, 0.00017396, 0.00018594, 0.00019846,
0.00021155, 0.00022521, 0.00023946, 0.00025432, 0.00026978,
0.00028587, 0.00030260, 0.00031998, 0.00033802, 0.00035674,
0.00037615, 0.00039626, 0.00041708, 0.00043863, 0.00046092, 0.00048396,
0.00050775, 0.00053233, 0.00055768, 0.00058384, 0.00061080,
0.00063858, 0.00066720, 0.00069665, 0.00072696, 0.00075813,
0.00079017, 0.00082310, 0.00085692, 0.00089164, 0.00092728, 0.00096384,
0.00100133, 0.00103976, 0.00107914, 0.00111947, 0.00116077,
0.00120304, 0.00124630, 0.00129053, 0.00133577, 0.00138200,
0.00142924, 0.00147749, 0.00152676, 0.00157705, 0.00162836, 0.00168070,
0.00173408, 0.00178850, 0.00184395, 0.00190045, 0.00195799,
0.00201658, 0.00207621, 0.00213688, 0.00219860, 0.00226137,
0.00232518, 0.00239003, 0.00245591, 0.00252284, 0.00259079, 0.00265977,
0.00272977, 0.00280078, 0.00287280, 0.00294582, 0.00301984,
0.00309484, 0.00317081, 0.00324774, 0.00332563, 0.00340446,
0.00348421, 0.00356488, 0.00364644, 0.00372889, 0.00381220, 0.00389636,
0.00398135, 0.00406715, 0.00415374, 0.00424109, 0.00432920,
0.00441802, 0.00450754, 0.00459773, 0.00468857, 0.00478001,
0.00487205, 0.00496464, 0.00505775, 0.00515136, 0.00524542, 0.00533990,
0.00543476, 0.00552997, 0.00562548, 0.00572125, 0.00581725,
0.00591342, 0.00600973, 0.00610612, 0.00620254, 0.00629895,
0.00639530, 0.00649153, 0.00658758, 0.00668341, 0.00677894, 0.00687413,
0.00696891, 0.00706322, 0.00715699, 0.00725016, 0.00734266,
0.00743441, 0.00752535, 0.00761540, 0.00770449, 0.00779254,
0.00787947, 0.00796519, 0.00804963, 0.00813270, 0.00821431, 0.00829437,
0.00837280, 0.00844949, 0.00852436, 0.00859730, 0.00866822,
0.00873701, 0.00880358, 0.00886781, 0.00892960, 0.00898884,
0.00904542, 0.00909923, 0.00915014, 0.00919805, 0.00924283, 0.00928436,
0.00932252, 0.00935718, 0.00938821, 0.00941550, 0.00943890,
0.00945828, 0.00947351, 0.00948446, 0.00949098, 0.00949294,
0.00949020, 0.00948262, 0.00947005, 0.00945235, 0.00942938, 0.00940099,
0.00936704, 0.00932738, 0.00928186, 0.00923034, 0.00917268,
0.00910872, 0.00903832, 0.00896134, 0.00887763, 0.00878706,
0.00868949, 0.00858478, 0.00847280, 0.00835343, 0.00822653, 0.00809199,
0.00794970, 0.00779956, 0.00764145, 0.00747530, 0.00730103,
0.00711857, 0.00692787, 0.00672888, 0.00652158, 0.00630597,
0.00608208, 0.00584994, 0.00560962, 0.00536124, 0.00510493, 0.00484089,
0.00456935, 0.00429062, 0.00400505, 0.00371310, 0.00341532,
0.00311238, 0.00280511, 0.00249452, 0.00218184, 0.00186864,
0.00155690, 0.00124918, 0.00094895, 0.00066112, 0.00039320, 0.00015881
};
double WebRtcIsac_LevDurb(double *a, double *k, double *r, size_t order)
{
double sum, alpha;
size_t m, m_h, i;
alpha = 0; //warning -DH
a[0] = 1.0;
if (r[0] < LEVINSON_EPS) { /* if r[0] <= 0, set LPC coeff. to zero */
for (i = 0; i < order; i++) {
k[i] = 0;
a[i+1] = 0;
}
} else {
a[1] = k[0] = -r[1]/r[0];
alpha = r[0] + r[1] * k[0];
for (m = 1; m < order; m++){
sum = r[m + 1];
for (i = 0; i < m; i++){
sum += a[i+1] * r[m - i];
}
k[m] = -sum / alpha;
alpha += k[m] * sum;
m_h = (m + 1) >> 1;
for (i = 0; i < m_h; i++){
sum = a[i+1] + k[m] * a[m - i];
a[m - i] += k[m] * a[i+1];
a[i+1] = sum;
}
a[m+1] = k[m];
}
}
return alpha;
}
//was static before, but didn't work with MEX file
void WebRtcIsac_GetVars(const double *input, const int16_t *pitchGains_Q12,
double *oldEnergy, double *varscale)
{
double nrg[4], chng, pg;
int k;
double pitchGains[4]={0,0,0,0};;
/* Calculate energies of first and second frame halfs */
nrg[0] = 0.0001;
for (k = QLOOKAHEAD/2; k < (FRAMESAMPLES_QUARTER + QLOOKAHEAD) / 2; k++) {
nrg[0] += input[k]*input[k];
}
nrg[1] = 0.0001;
for ( ; k < (FRAMESAMPLES_HALF + QLOOKAHEAD) / 2; k++) {
nrg[1] += input[k]*input[k];
}
nrg[2] = 0.0001;
for ( ; k < (FRAMESAMPLES*3/4 + QLOOKAHEAD) / 2; k++) {
nrg[2] += input[k]*input[k];
}
nrg[3] = 0.0001;
for ( ; k < (FRAMESAMPLES + QLOOKAHEAD) / 2; k++) {
nrg[3] += input[k]*input[k];
}
/* Calculate average level change */
chng = 0.25 * (fabs(10.0 * log10(nrg[3] / nrg[2])) +
fabs(10.0 * log10(nrg[2] / nrg[1])) +
fabs(10.0 * log10(nrg[1] / nrg[0])) +
fabs(10.0 * log10(nrg[0] / *oldEnergy)));
/* Find average pitch gain */
pg = 0.0;
for (k=0; k<4; k++)
{
pitchGains[k] = ((float)pitchGains_Q12[k])/4096;
pg += pitchGains[k];
}
pg *= 0.25;
/* If pitch gain is low and energy constant - increase noise level*/
/* Matlab code:
pg = 0:.01:.45; plot(pg, 0.0 + 1.0 * exp( -1.0 * exp(-200.0 * pg.*pg.*pg) / (1.0 + 0.4 * 0) ))
*/
*varscale = 0.0 + 1.0 * exp( -1.4 * exp(-200.0 * pg*pg*pg) / (1.0 + 0.4 * chng) );
*oldEnergy = nrg[3];
}
void
WebRtcIsac_GetVarsUB(
const double* input,
double* oldEnergy,
double* varscale)
{
double nrg[4], chng;
int k;
/* Calculate energies of first and second frame halfs */
nrg[0] = 0.0001;
for (k = 0; k < (FRAMESAMPLES_QUARTER) / 2; k++) {
nrg[0] += input[k]*input[k];
}
nrg[1] = 0.0001;
for ( ; k < (FRAMESAMPLES_HALF) / 2; k++) {
nrg[1] += input[k]*input[k];
}
nrg[2] = 0.0001;
for ( ; k < (FRAMESAMPLES*3/4) / 2; k++) {
nrg[2] += input[k]*input[k];
}
nrg[3] = 0.0001;
for ( ; k < (FRAMESAMPLES) / 2; k++) {
nrg[3] += input[k]*input[k];
}
/* Calculate average level change */
chng = 0.25 * (fabs(10.0 * log10(nrg[3] / nrg[2])) +
fabs(10.0 * log10(nrg[2] / nrg[1])) +
fabs(10.0 * log10(nrg[1] / nrg[0])) +
fabs(10.0 * log10(nrg[0] / *oldEnergy)));
/* If pitch gain is low and energy constant - increase noise level*/
/* Matlab code:
pg = 0:.01:.45; plot(pg, 0.0 + 1.0 * exp( -1.0 * exp(-200.0 * pg.*pg.*pg) / (1.0 + 0.4 * 0) ))
*/
*varscale = exp( -1.4 / (1.0 + 0.4 * chng) );
*oldEnergy = nrg[3];
}
void WebRtcIsac_GetLpcCoefLb(double *inLo, double *inHi, MaskFiltstr *maskdata,
double signal_noise_ratio, const int16_t *pitchGains_Q12,
double *lo_coeff, double *hi_coeff)
{
int k, n, j, pos1, pos2;
double varscale;
double DataLo[WINLEN], DataHi[WINLEN];
double corrlo[ORDERLO+2], corrlo2[ORDERLO+1];
double corrhi[ORDERHI+1];
double k_veclo[ORDERLO], k_vechi[ORDERHI];
double a_LO[ORDERLO+1], a_HI[ORDERHI+1];
double tmp, res_nrg;
double FwdA, FwdB;
/* hearing threshold level in dB; higher value gives more noise */
const double HearThresOffset = -28.0;
/* bandwdith expansion factors for low- and high band */
const double gammaLo = 0.9;
const double gammaHi = 0.8;
/* less-noise-at-low-frequencies factor */
double aa;
/* convert from dB to signal level */
const double H_T_H = pow(10.0, 0.05 * HearThresOffset);
double S_N_R = pow(10.0, 0.05 * signal_noise_ratio) / 3.46; /* divide by sqrt(12) */
/* change quallevel depending on pitch gains and level fluctuations */
WebRtcIsac_GetVars(inLo, pitchGains_Q12, &(maskdata->OldEnergy), &varscale);
/* less-noise-at-low-frequencies factor */
aa = 0.35 * (0.5 + 0.5 * varscale);
/* replace data in buffer by new look-ahead data */
for (pos1 = 0; pos1 < QLOOKAHEAD; pos1++)
maskdata->DataBufferLo[pos1 + WINLEN - QLOOKAHEAD] = inLo[pos1];
for (k = 0; k < SUBFRAMES; k++) {
/* Update input buffer and multiply signal with window */
for (pos1 = 0; pos1 < WINLEN - UPDATE/2; pos1++) {
maskdata->DataBufferLo[pos1] = maskdata->DataBufferLo[pos1 + UPDATE/2];
maskdata->DataBufferHi[pos1] = maskdata->DataBufferHi[pos1 + UPDATE/2];
DataLo[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1];
DataHi[pos1] = maskdata->DataBufferHi[pos1] * kLpcCorrWindow[pos1];
}
pos2 = k * UPDATE/2;
for (n = 0; n < UPDATE/2; n++, pos1++) {
maskdata->DataBufferLo[pos1] = inLo[QLOOKAHEAD + pos2];
maskdata->DataBufferHi[pos1] = inHi[pos2++];
DataLo[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1];
DataHi[pos1] = maskdata->DataBufferHi[pos1] * kLpcCorrWindow[pos1];
}
/* Get correlation coefficients */
WebRtcIsac_AutoCorr(corrlo, DataLo, WINLEN, ORDERLO+1); /* computing autocorrelation */
WebRtcIsac_AutoCorr(corrhi, DataHi, WINLEN, ORDERHI);
/* less noise for lower frequencies, by filtering/scaling autocorrelation sequences */
corrlo2[0] = (1.0+aa*aa) * corrlo[0] - 2.0*aa * corrlo[1];
tmp = (1.0 + aa*aa);
for (n = 1; n <= ORDERLO; n++) {
corrlo2[n] = tmp * corrlo[n] - aa * (corrlo[n-1] + corrlo[n+1]);
}
tmp = (1.0+aa) * (1.0+aa);
for (n = 0; n <= ORDERHI; n++) {
corrhi[n] = tmp * corrhi[n];
}
/* add white noise floor */
corrlo2[0] += 1e-6;
corrhi[0] += 1e-6;
FwdA = 0.01;
FwdB = 0.01;
/* recursive filtering of correlation over subframes */
for (n = 0; n <= ORDERLO; n++) {
maskdata->CorrBufLo[n] = FwdA * maskdata->CorrBufLo[n] + corrlo2[n];
corrlo2[n] = ((1.0-FwdA)*FwdB) * maskdata->CorrBufLo[n] + (1.0-FwdB) * corrlo2[n];
}
for (n = 0; n <= ORDERHI; n++) {
maskdata->CorrBufHi[n] = FwdA * maskdata->CorrBufHi[n] + corrhi[n];
corrhi[n] = ((1.0-FwdA)*FwdB) * maskdata->CorrBufHi[n] + (1.0-FwdB) * corrhi[n];
}
/* compute prediction coefficients */
WebRtcIsac_LevDurb(a_LO, k_veclo, corrlo2, ORDERLO);
WebRtcIsac_LevDurb(a_HI, k_vechi, corrhi, ORDERHI);
/* bandwidth expansion */
tmp = gammaLo;
for (n = 1; n <= ORDERLO; n++) {
a_LO[n] *= tmp;
tmp *= gammaLo;
}
/* residual energy */
res_nrg = 0.0;
for (j = 0; j <= ORDERLO; j++) {
for (n = 0; n <= j; n++) {
res_nrg += a_LO[j] * corrlo2[j-n] * a_LO[n];
}
for (n = j+1; n <= ORDERLO; n++) {
res_nrg += a_LO[j] * corrlo2[n-j] * a_LO[n];
}
}
/* add hearing threshold and compute the gain */
*lo_coeff++ = S_N_R / (sqrt(res_nrg) / varscale + H_T_H);
/* copy coefficients to output array */
for (n = 1; n <= ORDERLO; n++) {
*lo_coeff++ = a_LO[n];
}
/* bandwidth expansion */
tmp = gammaHi;
for (n = 1; n <= ORDERHI; n++) {
a_HI[n] *= tmp;
tmp *= gammaHi;
}
/* residual energy */
res_nrg = 0.0;
for (j = 0; j <= ORDERHI; j++) {
for (n = 0; n <= j; n++) {
res_nrg += a_HI[j] * corrhi[j-n] * a_HI[n];
}
for (n = j+1; n <= ORDERHI; n++) {
res_nrg += a_HI[j] * corrhi[n-j] * a_HI[n];
}
}
/* add hearing threshold and compute of the gain */
*hi_coeff++ = S_N_R / (sqrt(res_nrg) / varscale + H_T_H);
/* copy coefficients to output array */
for (n = 1; n <= ORDERHI; n++) {
*hi_coeff++ = a_HI[n];
}
}
}
/******************************************************************************
* WebRtcIsac_GetLpcCoefUb()
*
* Compute LP coefficients and correlation coefficients. At 12 kHz LP
* coefficients of the first and the last sub-frame is computed. At 16 kHz
* LP coefficients of 4th, 8th and 12th sub-frames are computed. We always
* compute correlation coefficients of all sub-frames.
*
* Inputs:
* -inSignal : Input signal
* -maskdata : a structure keeping signal from previous frame.
* -bandwidth : specifies if the codec is in 0-16 kHz mode or
* 0-12 kHz mode.
*
* Outputs:
* -lpCoeff : pointer to a buffer where A-polynomials are
* written to (first coeff is 1 and it is not
* written)
* -corrMat : a matrix where correlation coefficients of each
* sub-frame are written to one row.
* -varscale : a scale used to compute LPC gains.
*/
void
WebRtcIsac_GetLpcCoefUb(
double* inSignal,
MaskFiltstr* maskdata,
double* lpCoeff,
double corrMat[][UB_LPC_ORDER + 1],
double* varscale,
int16_t bandwidth)
{
int frameCntr, activeFrameCntr, n, pos1, pos2;
int16_t criterion1;
int16_t criterion2;
int16_t numSubFrames = SUBFRAMES * (1 + (bandwidth == isac16kHz));
double data[WINLEN];
double corrSubFrame[UB_LPC_ORDER+2];
double reflecCoeff[UB_LPC_ORDER];
double aPolynom[UB_LPC_ORDER+1];
double tmp;
/* bandwdith expansion factors */
const double gamma = 0.9;
/* change quallevel depending on pitch gains and level fluctuations */
WebRtcIsac_GetVarsUB(inSignal, &(maskdata->OldEnergy), varscale);
/* replace data in buffer by new look-ahead data */
for(frameCntr = 0, activeFrameCntr = 0; frameCntr < numSubFrames;
frameCntr++)
{
if(frameCntr == SUBFRAMES)
{
// we are in 16 kHz
varscale++;
WebRtcIsac_GetVarsUB(&inSignal[FRAMESAMPLES_HALF],
&(maskdata->OldEnergy), varscale);
}
/* Update input buffer and multiply signal with window */
for(pos1 = 0; pos1 < WINLEN - UPDATE/2; pos1++)
{
maskdata->DataBufferLo[pos1] = maskdata->DataBufferLo[pos1 +
UPDATE/2];
data[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1];
}
pos2 = frameCntr * UPDATE/2;
for(n = 0; n < UPDATE/2; n++, pos1++, pos2++)
{
maskdata->DataBufferLo[pos1] = inSignal[pos2];
data[pos1] = maskdata->DataBufferLo[pos1] * kLpcCorrWindow[pos1];
}
/* Get correlation coefficients */
/* computing autocorrelation */
WebRtcIsac_AutoCorr(corrSubFrame, data, WINLEN, UB_LPC_ORDER+1);
memcpy(corrMat[frameCntr], corrSubFrame,
(UB_LPC_ORDER+1)*sizeof(double));
criterion1 = ((frameCntr == 0) || (frameCntr == (SUBFRAMES - 1))) &&
(bandwidth == isac12kHz);
criterion2 = (((frameCntr+1) % 4) == 0) &&
(bandwidth == isac16kHz);
if(criterion1 || criterion2)
{
/* add noise */
corrSubFrame[0] += 1e-6;
/* compute prediction coefficients */
WebRtcIsac_LevDurb(aPolynom, reflecCoeff, corrSubFrame,
UB_LPC_ORDER);
/* bandwidth expansion */
tmp = gamma;
for (n = 1; n <= UB_LPC_ORDER; n++)
{
*lpCoeff++ = aPolynom[n] * tmp;
tmp *= gamma;
}
activeFrameCntr++;
}
}
}
/******************************************************************************
* WebRtcIsac_GetLpcGain()
*
* Compute the LPC gains for each sub-frame, given the LPC of each sub-frame
* and the corresponding correlation coefficients.
*
* Inputs:
* -signal_noise_ratio : the desired SNR in dB.
* -numVecs : number of sub-frames
* -corrMat : a matrix of correlation coefficients where
* each row is a set of correlation coefficients of
* one sub-frame.
* -varscale : a scale computed when WebRtcIsac_GetLpcCoefUb()
* is called.
*
* Outputs:
* -gain : pointer to a buffer where LP gains are written.
*
*/
void
WebRtcIsac_GetLpcGain(
double signal_noise_ratio,
const double* filtCoeffVecs,
int numVecs,
double* gain,
double corrMat[][UB_LPC_ORDER + 1],
const double* varscale)
{
int16_t j, n;
int16_t subFrameCntr;
double aPolynom[ORDERLO + 1];
double res_nrg;
const double HearThresOffset = -28.0;
const double H_T_H = pow(10.0, 0.05 * HearThresOffset);
/* divide by sqrt(12) = 3.46 */
const double S_N_R = pow(10.0, 0.05 * signal_noise_ratio) / 3.46;
aPolynom[0] = 1;
for(subFrameCntr = 0; subFrameCntr < numVecs; subFrameCntr++)
{
if(subFrameCntr == SUBFRAMES)
{
// we are in second half of a SWB frame. use new varscale
varscale++;
}
memcpy(&aPolynom[1], &filtCoeffVecs[(subFrameCntr * (UB_LPC_ORDER + 1)) +
1], sizeof(double) * UB_LPC_ORDER);
/* residual energy */
res_nrg = 0.0;
for(j = 0; j <= UB_LPC_ORDER; j++)
{
for(n = 0; n <= j; n++)
{
res_nrg += aPolynom[j] * corrMat[subFrameCntr][j-n] *
aPolynom[n];
}
for(n = j+1; n <= UB_LPC_ORDER; n++)
{
res_nrg += aPolynom[j] * corrMat[subFrameCntr][n-j] *
aPolynom[n];
}
}
/* add hearing threshold and compute the gain */
gain[subFrameCntr] = S_N_R / (sqrt(res_nrg) / *varscale + H_T_H);
}
}

50
webrtc/modules/audio_coding/codecs/isac/main/source/lpc_analysis.h Normal file
View File

@ -0,0 +1,50 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* lpc_analysis.h
*
* LPC functions
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYSIS_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYSIS_H_
#include "settings.h"
#include "structs.h"
double WebRtcIsac_LevDurb(double *a, double *k, double *r, size_t order);
void WebRtcIsac_GetVars(const double *input, const int16_t *pitchGains_Q12,
double *oldEnergy, double *varscale);
void WebRtcIsac_GetLpcCoefLb(double *inLo, double *inHi, MaskFiltstr *maskdata,
double signal_noise_ratio, const int16_t *pitchGains_Q12,
double *lo_coeff, double *hi_coeff);
void WebRtcIsac_GetLpcGain(
double signal_noise_ratio,
const double* filtCoeffVecs,
int numVecs,
double* gain,
double corrLo[][UB_LPC_ORDER + 1],
const double* varscale);
void WebRtcIsac_GetLpcCoefUb(
double* inSignal,
MaskFiltstr* maskdata,
double* lpCoeff,
double corr[][UB_LPC_ORDER + 1],
double* varscale,
int16_t bandwidth);
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYIS_H_ */

137
webrtc/modules/audio_coding/codecs/isac/main/source/lpc_gain_swb_tables.c Normal file
View File

@ -0,0 +1,137 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* SWB_KLT_Tables_LPCGain.c
*
* This file defines tables used for entropy coding of LPC Gain
* of upper-band.
*
*/
#include "lpc_gain_swb_tables.h"
#include "settings.h"
#include "webrtc/typedefs.h"
const double WebRtcIsac_kQSizeLpcGain = 0.100000;
const double WebRtcIsac_kMeanLpcGain = -3.3822;
/*
* The smallest reconstruction points for quantiztion of
* LPC gains.
*/
const double WebRtcIsac_kLeftRecPointLpcGain[SUBFRAMES] =
{
-0.800000, -1.000000, -1.200000, -2.200000, -3.000000, -12.700000
};
/*
* Number of reconstruction points of quantizers for LPC Gains.
*/
const int16_t WebRtcIsac_kNumQCellLpcGain[SUBFRAMES] =
{
17, 20, 25, 45, 77, 170
};
/*
* Starting index for entropy decoder to search for the right interval,
* one entry per LAR coefficient
*/
const uint16_t WebRtcIsac_kLpcGainEntropySearch[SUBFRAMES] =
{
8, 10, 12, 22, 38, 85
};
/*
* The following 6 vectors define CDF of 6 decorrelated LPC
* gains.
*/
const uint16_t WebRtcIsac_kLpcGainCdfVec0[18] =
{
0, 10, 27, 83, 234, 568, 1601, 4683, 16830, 57534, 63437,
64767, 65229, 65408, 65483, 65514, 65527, 65535
};
const uint16_t WebRtcIsac_kLpcGainCdfVec1[21] =
{
0, 15, 33, 84, 185, 385, 807, 1619, 3529, 7850, 19488,
51365, 62437, 64548, 65088, 65304, 65409, 65484, 65507, 65522, 65535
};
const uint16_t WebRtcIsac_kLpcGainCdfVec2[26] =
{
0, 15, 29, 54, 89, 145, 228, 380, 652, 1493, 4260,
12359, 34133, 50749, 57224, 60814, 62927, 64078, 64742, 65103, 65311, 65418,
65473, 65509, 65521, 65535
};
const uint16_t WebRtcIsac_kLpcGainCdfVec3[46] =
{
0, 8, 12, 16, 26, 42, 56, 76, 111, 164, 247,
366, 508, 693, 1000, 1442, 2155, 3188, 4854, 7387, 11249, 17617,
30079, 46711, 56291, 60127, 62140, 63258, 63954, 64384, 64690, 64891, 65031,
65139, 65227, 65293, 65351, 65399, 65438, 65467, 65492, 65504, 65510, 65518,
65523, 65535
};
const uint16_t WebRtcIsac_kLpcGainCdfVec4[78] =
{
0, 17, 29, 39, 51, 70, 104, 154, 234, 324, 443,
590, 760, 971, 1202, 1494, 1845, 2274, 2797, 3366, 4088, 4905,
5899, 7142, 8683, 10625, 12983, 16095, 20637, 28216, 38859, 47237, 51537,
54150, 56066, 57583, 58756, 59685, 60458, 61103, 61659, 62144, 62550, 62886,
63186, 63480, 63743, 63954, 64148, 64320, 64467, 64600, 64719, 64837, 64939,
65014, 65098, 65160, 65211, 65250, 65290, 65325, 65344, 65366, 65391, 65410,
65430, 65447, 65460, 65474, 65487, 65494, 65501, 65509, 65513, 65518, 65520,
65535
};
const uint16_t WebRtcIsac_kLpcGainCdfVec5[171] =
{
0, 10, 12, 14, 16, 18, 23, 29, 35, 42, 51,
58, 65, 72, 78, 87, 96, 103, 111, 122, 134, 150,
167, 184, 202, 223, 244, 265, 289, 315, 346, 379, 414,
450, 491, 532, 572, 613, 656, 700, 751, 802, 853, 905,
957, 1021, 1098, 1174, 1250, 1331, 1413, 1490, 1565, 1647, 1730,
1821, 1913, 2004, 2100, 2207, 2314, 2420, 2532, 2652, 2783, 2921,
3056, 3189, 3327, 3468, 3640, 3817, 3993, 4171, 4362, 4554, 4751,
4948, 5142, 5346, 5566, 5799, 6044, 6301, 6565, 6852, 7150, 7470,
7797, 8143, 8492, 8835, 9181, 9547, 9919, 10315, 10718, 11136, 11566,
12015, 12482, 12967, 13458, 13953, 14432, 14903, 15416, 15936, 16452, 16967,
17492, 18024, 18600, 19173, 19736, 20311, 20911, 21490, 22041, 22597, 23157,
23768, 24405, 25034, 25660, 26280, 26899, 27614, 28331, 29015, 29702, 30403,
31107, 31817, 32566, 33381, 34224, 35099, 36112, 37222, 38375, 39549, 40801,
42074, 43350, 44626, 45982, 47354, 48860, 50361, 51845, 53312, 54739, 56026,
57116, 58104, 58996, 59842, 60658, 61488, 62324, 63057, 63769, 64285, 64779,
65076, 65344, 65430, 65500, 65517, 65535
};
/*
* An array of pointers to CDFs of decorrelated LPC Gains
*/
const uint16_t* WebRtcIsac_kLpcGainCdfMat[SUBFRAMES] =
{
WebRtcIsac_kLpcGainCdfVec0, WebRtcIsac_kLpcGainCdfVec1,
WebRtcIsac_kLpcGainCdfVec2, WebRtcIsac_kLpcGainCdfVec3,
WebRtcIsac_kLpcGainCdfVec4, WebRtcIsac_kLpcGainCdfVec5
};
/*
* A matrix to decorrellate LPC gains of subframes.
*/
const double WebRtcIsac_kLpcGainDecorrMat[SUBFRAMES][SUBFRAMES] =
{
{-0.150860, 0.327872, 0.367220, 0.504613, 0.559270, 0.409234},
{ 0.457128, -0.613591, -0.289283, -0.029734, 0.393760, 0.418240},
{-0.626043, 0.136489, -0.439118, -0.448323, 0.135987, 0.420869},
{ 0.526617, 0.480187, 0.242552, -0.488754, -0.158713, 0.411331},
{-0.302587, -0.494953, 0.588112, -0.063035, -0.404290, 0.387510},
{ 0.086378, 0.147714, -0.428875, 0.548300, -0.570121, 0.401391}
};

49
webrtc/modules/audio_coding/codecs/isac/main/source/lpc_gain_swb_tables.h Normal file
View File

@ -0,0 +1,49 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* SWB_KLT_Tables_LPCGain.h
*
* This file declares tables used for entropy coding of LPC Gain
* of upper-band.
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_GAIN_SWB_TABLES_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_GAIN_SWB_TABLES_H_
#include "settings.h"
#include "webrtc/typedefs.h"
extern const double WebRtcIsac_kQSizeLpcGain;
extern const double WebRtcIsac_kLeftRecPointLpcGain[SUBFRAMES];
extern const int16_t WebRtcIsac_kNumQCellLpcGain[SUBFRAMES];
extern const uint16_t WebRtcIsac_kLpcGainEntropySearch[SUBFRAMES];
extern const uint16_t WebRtcIsac_kLpcGainCdfVec0[18];
extern const uint16_t WebRtcIsac_kLpcGainCdfVec1[21];
extern const uint16_t WebRtcIsac_kLpcGainCdfVec2[26];
extern const uint16_t WebRtcIsac_kLpcGainCdfVec3[46];
extern const uint16_t WebRtcIsac_kLpcGainCdfVec4[78];
extern const uint16_t WebRtcIsac_kLpcGainCdfVec5[171];
extern const uint16_t* WebRtcIsac_kLpcGainCdfMat[SUBFRAMES];
extern const double WebRtcIsac_kLpcGainDecorrMat[SUBFRAMES][SUBFRAMES];
#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_GAIN_SWB_TABLES_H_

159
webrtc/modules/audio_coding/codecs/isac/main/source/lpc_shape_swb12_tables.c Normal file
View File

@ -0,0 +1,159 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* SWB_KLT_Tables.c
*
* This file defines tables used for entropy coding of LPC shape of
* upper-band signal if the bandwidth is 12 kHz.
*
*/
#include "lpc_shape_swb12_tables.h"
#include "settings.h"
#include "webrtc/typedefs.h"
/*
* Mean value of LAR
*/
const double WebRtcIsac_kMeanLarUb12[UB_LPC_ORDER] =
{
0.03748928306641, 0.09453441192543, -0.01112522344398, 0.03800237516842
};
/*
* A rotation matrix to decorrelate intra-vector correlation,
* i.e. correlation among components of LAR vector.
*/
const double WebRtcIsac_kIntraVecDecorrMatUb12[UB_LPC_ORDER][UB_LPC_ORDER] =
{
{-0.00075365493856, -0.05809964887743, -0.23397966154116, 0.97050367376411},
{ 0.00625021257734, -0.17299965610679, 0.95977735920651, 0.22104179375008},
{ 0.20543384258374, -0.96202143495696, -0.15301870801552, -0.09432375099565},
{-0.97865075648479, -0.20300322280841, -0.02581111653779, -0.01913568980258}
};
/*
* A rotation matrix to remove correlation among LAR coefficients
* of different LAR vectors. One might guess that decorrelation matrix
* for the first component should differ from the second component
* but we haven't observed a significant benefit of having different
* decorrelation matrices for different components.
*/
const double WebRtcIsac_kInterVecDecorrMatUb12
[UB_LPC_VEC_PER_FRAME][UB_LPC_VEC_PER_FRAME] =
{
{ 0.70650597970460, -0.70770707262373},
{-0.70770707262373, -0.70650597970460}
};
/*
* LAR quantization step-size.
*/
const double WebRtcIsac_kLpcShapeQStepSizeUb12 = 0.150000;
/*
* The smallest reconstruction points for quantiztion of LAR coefficients.
*/
const double WebRtcIsac_kLpcShapeLeftRecPointUb12
[UB_LPC_ORDER*UB_LPC_VEC_PER_FRAME] =
{
-0.900000, -1.050000, -1.350000, -1.800000, -1.350000, -1.650000,
-2.250000, -3.450000
};
/*
* Number of reconstruction points of quantizers for LAR coefficients.
*/
const int16_t WebRtcIsac_kLpcShapeNumRecPointUb12
[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME] =
{
13, 15, 19, 27, 19, 24, 32, 48
};
/*
* Starting index for entropy decoder to search for the right interval,
* one entry per LAR coefficient
*/
const uint16_t WebRtcIsac_kLpcShapeEntropySearchUb12
[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME] =
{
6, 7, 9, 13, 9, 12, 16, 24
};
/*
* The following 8 vectors define CDF of 8 decorrelated LAR
* coefficients.
*/
const uint16_t WebRtcIsac_kLpcShapeCdfVec0Ub12[14] =
{
0, 13, 95, 418, 1687, 6498, 21317, 44200, 59029, 63849, 65147,
65449, 65525, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec1Ub12[16] =
{
0, 10, 59, 255, 858, 2667, 8200, 22609, 42988, 57202, 62947,
64743, 65308, 65476, 65522, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec2Ub12[20] =
{
0, 18, 40, 118, 332, 857, 2017, 4822, 11321, 24330, 41279,
54342, 60637, 63394, 64659, 65184, 65398, 65482, 65518, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec3Ub12[28] =
{
0, 21, 38, 90, 196, 398, 770, 1400, 2589, 4650, 8211,
14933, 26044, 39592, 50814, 57452, 60971, 62884, 63995, 64621, 65019, 65273,
65410, 65480, 65514, 65522, 65531, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec4Ub12[20] =
{
0, 7, 46, 141, 403, 969, 2132, 4649, 10633, 24902, 43254,
54665, 59928, 62674, 64173, 64938, 65293, 65464, 65523, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec5Ub12[25] =
{
0, 7, 22, 72, 174, 411, 854, 1737, 3545, 6774, 13165,
25221, 40980, 52821, 58714, 61706, 63472, 64437, 64989, 65287, 65430, 65503,
65525, 65529, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec6Ub12[33] =
{
0, 11, 21, 36, 65, 128, 228, 401, 707, 1241, 2126,
3589, 6060, 10517, 18853, 31114, 42477, 49770, 54271, 57467, 59838, 61569,
62831, 63772, 64433, 64833, 65123, 65306, 65419, 65466, 65499, 65519, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec7Ub12[49] =
{
0, 14, 34, 67, 107, 167, 245, 326, 449, 645, 861,
1155, 1508, 2003, 2669, 3544, 4592, 5961, 7583, 9887, 13256, 18765,
26519, 34077, 40034, 44349, 47795, 50663, 53262, 55473, 57458, 59122, 60592,
61742, 62690, 63391, 63997, 64463, 64794, 65045, 65207, 65309, 65394, 65443,
65478, 65504, 65514, 65523, 65535
};
/*
* An array of pointers to CDFs of decorrelated LARs
*/
const uint16_t* WebRtcIsac_kLpcShapeCdfMatUb12
[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME] =
{
WebRtcIsac_kLpcShapeCdfVec0Ub12, WebRtcIsac_kLpcShapeCdfVec1Ub12,
WebRtcIsac_kLpcShapeCdfVec2Ub12, WebRtcIsac_kLpcShapeCdfVec3Ub12,
WebRtcIsac_kLpcShapeCdfVec4Ub12, WebRtcIsac_kLpcShapeCdfVec5Ub12,
WebRtcIsac_kLpcShapeCdfVec6Ub12, WebRtcIsac_kLpcShapeCdfVec7Ub12
};

65
webrtc/modules/audio_coding/codecs/isac/main/source/lpc_shape_swb12_tables.h Normal file
View File

@ -0,0 +1,65 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* lpc_shape_swb12_tables.h
*
* This file declares tables used for entropy coding of LPC shape of
* upper-band signal if the bandwidth is 12 kHz.
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB12_TABLES_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB12_TABLES_H_
#include "settings.h"
#include "webrtc/typedefs.h"
extern const double WebRtcIsac_kMeanLarUb12[UB_LPC_ORDER];
extern const double WebRtcIsac_kMeanLpcGain;
extern const double WebRtcIsac_kIntraVecDecorrMatUb12[UB_LPC_ORDER][UB_LPC_ORDER];
extern const double WebRtcIsac_kInterVecDecorrMatUb12
[UB_LPC_VEC_PER_FRAME][UB_LPC_VEC_PER_FRAME];
extern const double WebRtcIsac_kLpcShapeQStepSizeUb12;
extern const double WebRtcIsac_kLpcShapeLeftRecPointUb12
[UB_LPC_ORDER*UB_LPC_VEC_PER_FRAME];
extern const int16_t WebRtcIsac_kLpcShapeNumRecPointUb12
[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME];
extern const uint16_t WebRtcIsac_kLpcShapeEntropySearchUb12
[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec0Ub12[14];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec1Ub12[16];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec2Ub12[20];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec3Ub12[28];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec4Ub12[20];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec5Ub12[25];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec6Ub12[33];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec7Ub12[49];
extern const uint16_t* WebRtcIsac_kLpcShapeCdfMatUb12
[UB_LPC_ORDER * UB_LPC_VEC_PER_FRAME];
#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB12_TABLES_H_

248
webrtc/modules/audio_coding/codecs/isac/main/source/lpc_shape_swb16_tables.c Normal file
View File

@ -0,0 +1,248 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* SWB16_KLT_Tables.c
*
* This file defines tables used for entropy coding of LPC shape of
* upper-band signal if the bandwidth is 16 kHz.
*
*/
#include "lpc_shape_swb16_tables.h"
#include "settings.h"
#include "webrtc/typedefs.h"
/*
* Mean value of LAR
*/
const double WebRtcIsac_kMeanLarUb16[UB_LPC_ORDER] =
{
0.454978, 0.364747, 0.102999, 0.104523
};
/*
* A rotation matrix to decorrelate intra-vector correlation,
* i.e. correlation among components of LAR vector.
*/
const double WebRtcIsac_kIintraVecDecorrMatUb16[UB_LPC_ORDER][UB_LPC_ORDER] =
{
{-0.020528, -0.085858, -0.002431, 0.996093},
{-0.033155, 0.036102, 0.998786, 0.004866},
{ 0.202627, 0.974853, -0.028940, 0.088132},
{-0.978479, 0.202454, -0.039785, -0.002811}
};
/*
* A rotation matrix to remove correlation among LAR coefficients
* of different LAR vectors. One might guess that decorrelation matrix
* for the first component should differ from the second component
* but we haven't observed a significant benefit of having different
* decorrelation matrices for different components.
*/
const double WebRtcIsac_kInterVecDecorrMatUb16
[UB16_LPC_VEC_PER_FRAME][UB16_LPC_VEC_PER_FRAME] =
{
{ 0.291675, -0.515786, 0.644927, 0.482658},
{-0.647220, 0.479712, 0.289556, 0.516856},
{ 0.643084, 0.485489, -0.289307, 0.516763},
{-0.287185, -0.517823, -0.645389, 0.482553}
};
/*
* The following 16 vectors define CDF of 16 decorrelated LAR
* coefficients.
*/
const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub16[14] =
{
0, 2, 20, 159, 1034, 5688, 20892, 44653,
59849, 64485, 65383, 65518, 65534, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec1Ub16[16] =
{
0, 1, 7, 43, 276, 1496, 6681, 21653,
43891, 58859, 64022, 65248, 65489, 65529, 65534, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec2Ub16[18] =
{
0, 1, 9, 54, 238, 933, 3192, 9461,
23226, 42146, 56138, 62413, 64623, 65300, 65473, 65521,
65533, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec3Ub16[30] =
{
0, 2, 4, 8, 17, 36, 75, 155,
329, 683, 1376, 2662, 5047, 9508, 17526, 29027,
40363, 48997, 55096, 59180, 61789, 63407, 64400, 64967,
65273, 65429, 65497, 65526, 65534, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec4Ub16[16] =
{
0, 1, 10, 63, 361, 1785, 7407, 22242,
43337, 58125, 63729, 65181, 65472, 65527, 65534, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec5Ub16[17] =
{
0, 1, 7, 29, 134, 599, 2443, 8590,
22962, 42635, 56911, 63060, 64940, 65408, 65513, 65531,
65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec6Ub16[21] =
{
0, 1, 5, 16, 57, 191, 611, 1808,
4847, 11755, 24612, 40910, 53789, 60698, 63729, 64924,
65346, 65486, 65523, 65532, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec7Ub16[36] =
{
0, 1, 4, 12, 25, 55, 104, 184,
314, 539, 926, 1550, 2479, 3861, 5892, 8845,
13281, 20018, 29019, 38029, 45581, 51557, 56057, 59284,
61517, 63047, 64030, 64648, 65031, 65261, 65402, 65480,
65518, 65530, 65534, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec8Ub16[21] =
{
0, 1, 2, 7, 26, 103, 351, 1149,
3583, 10204, 23846, 41711, 55361, 61917, 64382, 65186,
65433, 65506, 65528, 65534, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub160[21] =
{
0, 6, 19, 63, 205, 638, 1799, 4784,
11721, 24494, 40803, 53805, 60886, 63822, 64931, 65333,
65472, 65517, 65530, 65533, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub161[28] =
{
0, 1, 3, 11, 31, 86, 221, 506,
1101, 2296, 4486, 8477, 15356, 26079, 38941, 49952,
57165, 61257, 63426, 64549, 65097, 65351, 65463, 65510,
65526, 65532, 65534, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub162[55] =
{
0, 3, 12, 23, 42, 65, 89, 115,
150, 195, 248, 327, 430, 580, 784, 1099,
1586, 2358, 3651, 5899, 9568, 14312, 19158, 23776,
28267, 32663, 36991, 41153, 45098, 48680, 51870, 54729,
57141, 59158, 60772, 62029, 63000, 63761, 64322, 64728,
65000, 65192, 65321, 65411, 65463, 65496, 65514, 65523,
65527, 65529, 65531, 65532, 65533, 65534, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub163[26] =
{
0, 2, 4, 10, 21, 48, 114, 280,
701, 1765, 4555, 11270, 24267, 41213, 54285, 61003,
63767, 64840, 65254, 65421, 65489, 65514, 65526, 65532,
65534, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub164[28] =
{
0, 1, 3, 6, 15, 36, 82, 196,
453, 1087, 2557, 5923, 13016, 25366, 40449, 52582,
59539, 62896, 64389, 65033, 65316, 65442, 65494, 65519,
65529, 65533, 65534, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub165[34] =
{
0, 2, 4, 8, 18, 35, 73, 146,
279, 524, 980, 1789, 3235, 5784, 10040, 16998,
27070, 38543, 48499, 55421, 59712, 62257, 63748, 64591,
65041, 65278, 65410, 65474, 65508, 65522, 65530, 65533,
65534, 65535
};
const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub166[71] =
{
0, 1, 2, 6, 13, 26, 55, 92,
141, 191, 242, 296, 355, 429, 522, 636,
777, 947, 1162, 1428, 1753, 2137, 2605, 3140,
3743, 4409, 5164, 6016, 6982, 8118, 9451, 10993,
12754, 14810, 17130, 19780, 22864, 26424, 30547, 35222,
40140, 44716, 48698, 52056, 54850, 57162, 59068, 60643,
61877, 62827, 63561, 64113, 64519, 64807, 65019, 65167,
65272, 65343, 65399, 65440, 65471, 65487, 65500, 65509,
65518, 65524, 65527, 65531, 65533, 65534, 65535
};
/*
* An array of pointers to CDFs of decorrelated LARs
*/
const uint16_t* WebRtcIsac_kLpcShapeCdfMatUb16
[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] = {
WebRtcIsac_kLpcShapeCdfVec01Ub16,
WebRtcIsac_kLpcShapeCdfVec1Ub16,
WebRtcIsac_kLpcShapeCdfVec2Ub16,
WebRtcIsac_kLpcShapeCdfVec3Ub16,
WebRtcIsac_kLpcShapeCdfVec4Ub16,
WebRtcIsac_kLpcShapeCdfVec5Ub16,
WebRtcIsac_kLpcShapeCdfVec6Ub16,
WebRtcIsac_kLpcShapeCdfVec7Ub16,
WebRtcIsac_kLpcShapeCdfVec8Ub16,
WebRtcIsac_kLpcShapeCdfVec01Ub160,
WebRtcIsac_kLpcShapeCdfVec01Ub161,
WebRtcIsac_kLpcShapeCdfVec01Ub162,
WebRtcIsac_kLpcShapeCdfVec01Ub163,
WebRtcIsac_kLpcShapeCdfVec01Ub164,
WebRtcIsac_kLpcShapeCdfVec01Ub165,
WebRtcIsac_kLpcShapeCdfVec01Ub166
};
/*
* The smallest reconstruction points for quantiztion of LAR coefficients.
*/
const double WebRtcIsac_kLpcShapeLeftRecPointUb16
[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] =
{
-0.8250, -0.9750, -1.1250, -2.1750, -0.9750, -1.1250, -1.4250,
-2.6250, -1.4250, -1.2750, -1.8750, -3.6750, -1.7250, -1.8750,
-2.3250, -5.4750
};
/*
* Number of reconstruction points of quantizers for LAR coefficients.
*/
const int16_t WebRtcIsac_kLpcShapeNumRecPointUb16
[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] =
{
13, 15, 17, 29, 15, 16, 20, 35, 20,
20, 27, 54, 25, 27, 33, 70
};
/*
* Starting index for entropy decoder to search for the right interval,
* one entry per LAR coefficient
*/
const uint16_t WebRtcIsac_kLpcShapeEntropySearchUb16
[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME] =
{
6, 7, 8, 14, 7, 8, 10, 17, 10,
10, 13, 27, 12, 13, 16, 35
};
/*
* LAR quantization step-size.
*/
const double WebRtcIsac_kLpcShapeQStepSizeUb16 = 0.150000;

78
webrtc/modules/audio_coding/codecs/isac/main/source/lpc_shape_swb16_tables.h Normal file
View File

@ -0,0 +1,78 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* lpc_shape_swb16_tables.h
*
* This file declares tables used for entropy coding of LPC shape of
* upper-band signal if the bandwidth is 16 kHz.
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB16_TABLES_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB16_TABLES_H_
#include "settings.h"
#include "webrtc/typedefs.h"
extern const double WebRtcIsac_kMeanLarUb16[UB_LPC_ORDER];
extern const double WebRtcIsac_kIintraVecDecorrMatUb16[UB_LPC_ORDER][UB_LPC_ORDER];
extern const double WebRtcIsac_kInterVecDecorrMatUb16
[UB16_LPC_VEC_PER_FRAME][UB16_LPC_VEC_PER_FRAME];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub16[14];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec1Ub16[16];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec2Ub16[18];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec3Ub16[30];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec4Ub16[16];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec5Ub16[17];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec6Ub16[21];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec7Ub16[36];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec8Ub16[21];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub160[21];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub161[28];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub162[55];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub163[26];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub164[28];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub165[34];
extern const uint16_t WebRtcIsac_kLpcShapeCdfVec01Ub166[71];
extern const uint16_t* WebRtcIsac_kLpcShapeCdfMatUb16
[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME];
extern const double WebRtcIsac_kLpcShapeLeftRecPointUb16
[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME];
extern const int16_t WebRtcIsac_kLpcShapeNumRecPointUb16
[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME];
extern const uint16_t WebRtcIsac_kLpcShapeEntropySearchUb16
[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME];
extern const double WebRtcIsac_kLpcShapeQStepSizeUb16;
#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_SHAPE_SWB16_TABLES_H_

601
webrtc/modules/audio_coding/codecs/isac/main/source/lpc_tables.c Normal file
View File

@ -0,0 +1,601 @@
/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/* coding tables for the KLT coefficients */
#include "lpc_tables.h"
#include "settings.h"
/* cdf array for model indicator */
const uint16_t WebRtcIsac_kQKltModelCdf[4] = {
0, 15434, 37548, 65535 };
/* pointer to cdf array for model indicator */
const uint16_t *WebRtcIsac_kQKltModelCdfPtr[1] = {
WebRtcIsac_kQKltModelCdf };
/* initial cdf index for decoder of model indicator */
const uint16_t WebRtcIsac_kQKltModelInitIndex[1] = { 1 };
/* offset to go from rounded value to quantization index */
const short WebRtcIsac_kQKltQuantMinGain[12] = {
3, 6, 4, 6, 6, 9, 5, 16, 11, 34, 32, 47 };
const short WebRtcIsac_kQKltQuantMinShape[108] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
1, 1, 1, 1, 2, 2, 2, 3, 0, 0,
0, 0, 1, 0, 0, 0, 0, 1, 1, 1,
1, 1, 1, 2, 2, 3, 0, 0, 0, 0,
1, 0, 1, 1, 1, 1, 1, 1, 1, 2,
2, 4, 3, 5, 0, 0, 0, 0, 1, 1,
1, 1, 1, 1, 2, 1, 2, 2, 3, 4,
4, 7, 0, 0, 1, 1, 1, 1, 1, 1,
1, 2, 3, 2, 3, 4, 4, 5, 7, 13,
0, 1, 1, 2, 3, 2, 2, 2, 4, 4,
5, 6, 7, 11, 9, 13, 12, 26 };
/* maximum quantization index */
const uint16_t WebRtcIsac_kQKltMaxIndGain[12] = {
6, 12, 8, 14, 10, 19, 12, 31, 22, 56, 52, 138 };
const uint16_t WebRtcIsac_kQKltMaxIndShape[108] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
2, 2, 2, 2, 4, 4, 5, 6, 0, 0,
0, 0, 1, 0, 0, 0, 0, 1, 2, 2,
2, 2, 3, 4, 5, 7, 0, 0, 0, 0,
2, 0, 2, 2, 2, 2, 3, 2, 2, 4,
4, 6, 6, 9, 0, 0, 0, 0, 2, 2,
2, 2, 2, 2, 3, 2, 4, 4, 7, 7,
9, 13, 0, 0, 2, 2, 2, 2, 2, 2,
3, 4, 5, 4, 6, 8, 8, 10, 16, 25,
0, 2, 2, 4, 5, 4, 4, 4, 7, 8,
9, 10, 13, 19, 17, 23, 25, 49 };
/* index offset */
const uint16_t WebRtcIsac_kQKltOffsetGain[12] = {
0, 7, 20, 29, 44, 55, 75, 88, 120, 143, 200, 253 };
const uint16_t WebRtcIsac_kQKltOffsetShape[108] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
11, 14, 17, 20, 23, 28, 33, 39, 46, 47,
48, 49, 50, 52, 53, 54, 55, 56, 58, 61,
64, 67, 70, 74, 79, 85, 93, 94, 95, 96,
97, 100, 101, 104, 107, 110, 113, 117, 120, 123,
128, 133, 140, 147, 157, 158, 159, 160, 161, 164,
167, 170, 173, 176, 179, 183, 186, 191, 196, 204,
212, 222, 236, 237, 238, 241, 244, 247, 250, 253,
256, 260, 265, 271, 276, 283, 292, 301, 312, 329,
355, 356, 359, 362, 367, 373, 378, 383, 388, 396,
405, 415, 426, 440, 460, 478, 502, 528 };
/* initial cdf index for KLT coefficients */
const uint16_t WebRtcIsac_kQKltInitIndexGain[12] = {
3, 6, 4, 7, 5, 10, 6, 16, 11, 28, 26, 69};
const uint16_t WebRtcIsac_kQKltInitIndexShape[108] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
1, 1, 1, 1, 2, 2, 3, 3, 0, 0,
0, 0, 1, 0, 0, 0, 0, 1, 1, 1,
1, 1, 2, 2, 3, 4, 0, 0, 0, 0,
1, 0, 1, 1, 1, 1, 2, 1, 1, 2,
2, 3, 3, 5, 0, 0, 0, 0, 1, 1,
1, 1, 1, 1, 2, 1, 2, 2, 4, 4,
5, 7, 0, 0, 1, 1, 1, 1, 1, 1,
2, 2, 3, 2, 3, 4, 4, 5, 8, 13,
0, 1, 1, 2, 3, 2, 2, 2, 4, 4,
5, 5, 7, 10, 9, 12, 13, 25 };
/* quantizer representation levels */
const double WebRtcIsac_kQKltLevelsGain[392] = {
-2.78127126, -1.76745590, -0.77913790, -0.00437329, 0.79961206,
1.81775776, 2.81389782, -5.78753143, -4.88384084, -3.89320940,
-2.88133610, -1.92859977, -0.86347396, 0.02003888, 0.86140400,
1.89667156, 2.97134967, 3.98781964, 4.91727277, 5.82865898,
-4.11195874, -2.80898424, -1.87547977, -0.80943825, -0.00679084,
0.79573851, 1.83953397, 2.67586037, 3.76274082, -6.10933968,
-4.93034581, -3.89281296, -2.91530625, -1.89684163, -0.85319130,
-0.02275767, 0.86862017, 1.91578276, 2.96107339, 3.96543056,
4.91369908, 5.91058154, 6.83848343, 8.07136925, -5.87470395,
-4.84703049, -3.84284597, -2.86168446, -1.89290192, -0.82798145,
-0.00080013, 0.82594974, 1.85754329, 2.88351798, 3.96172628,
-8.85684885, -7.87387461, -6.97811862, -5.93256270, -4.94301439,
-3.95513701, -2.96041544, -1.94031192, -0.87961478, -0.00456201,
0.89911505, 1.91723376, 2.94011511, 3.93302540, 4.97990967,
5.93133404, 7.02181199, 7.92407762, 8.80155440, 10.04665814,
-4.82396678, -3.85612158, -2.89482244, -1.89558408, -0.90036978,
-0.00677823, 0.90607989, 1.90937981, 2.91175777, 3.91637730,
4.97565723, 5.84771228, 7.11145863, -16.07879840, -15.03776309,
-13.93905670, -12.95671800, -11.89171202, -10.95820934, -9.95923714,
-8.94357334, -7.99068299, -6.97481009, -5.94826231, -4.96673988,
-3.97490466, -2.97846970, -1.95130435, -0.94215262, -0.01444043,
0.96770704, 1.95848598, 2.94107862, 3.95666119, 4.97253085,
5.97191122, 6.93277360, 7.96608727, 8.87958779, 10.00264269,
10.86560820, 12.07449071, 13.04491775, 13.97507061, 14.91845261,
-10.85696295, -9.83365357, -9.01245635, -7.95915145, -6.95625003,
-5.95362618, -4.93468444, -3.98760978, -2.95044407, -1.97041277,
-0.97701799, -0.00840234, 0.97834289, 1.98361415, 2.97802439,
3.96415871, 4.95369042, 5.94101770, 6.92756798, 7.94063998,
8.85951828, 9.97077022, 11.00068503, -33.92030406, -32.81426422,
-32.00000000, -31.13243639, -30.11886909, -29.06017570, -28.12598824,
-27.22045482, -25.81215858, -25.07849962, -23.93018013, -23.02097643,
-21.89529725, -20.99091085, -19.98889048, -18.94327044, -17.96562071,
-16.96126218, -15.95054062, -14.98516200, -13.97101012, -13.02106500,
-11.98438006, -11.03216748, -9.95930286, -8.97043946, -7.98085082,
-6.98360995, -5.98998802, -4.98668173, -4.00032906, -3.00420619,
-1.98701132, -0.99324682, -0.00609324, 0.98297834, 1.99483076,
3.00305044, 3.97142097, 4.97525759, 5.98612258, 6.97448236,
7.97575900, 9.01086211, 9.98665542, 11.00541438, 11.98078628,
12.92352471, 14.06849675, 14.99949430, 15.94904834, 16.97440321,
18.04040916, 18.88987609, 20.05312391, 21.00000000, 21.79443341,
-31.98578825, -31.00000000, -29.89060567, -28.98555686, -27.97114102,
-26.84935410, -26.02402230, -24.94195278, -23.92336849, -22.95552382,
-21.97932836, -20.96055470, -19.99649553, -19.03436122, -17.96706525,
-17.01139515, -16.01363516, -14.99154248, -14.00298333, -12.99630613,
-11.99955519, -10.99000421, -10.00819092, -8.99763648, -7.98431793,
-7.01769025, -5.99604690, -4.99980697, -3.99334671, -3.01748192,
-2.02051217, -1.00848371, -0.01942358, 1.00477757, 1.95477872,
2.98593031, 3.98779079, 4.96862849, 6.02694771, 6.93983733,
7.89874717, 8.99615862, 10.02367921, 10.96293452, 11.84351528,
12.92207187, 13.85122329, 15.05146877, 15.99371264, 17.00000000,
18.00000000, 19.00000000, 19.82763573, -47.00000000, -46.00000000,
-44.87138498, -44.00000000, -43.00000000, -42.00000000, -41.00000000,
-39.88966612, -38.98913239, -37.80306486, -37.23584325, -35.94200288,
-34.99881301, -34.11361858, -33.06507360, -32.13129135, -30.90891364,
-29.81511907, -28.99250380, -28.04535391, -26.99767800, -26.04418164,
-24.95687851, -24.04865595, -23.03392645, -21.89366707, -20.93517364,
-19.99388660, -18.91620943, -18.03749683, -16.99532379, -15.98683813,
-15.06421479, -13.99359211, -12.99714098, -11.97022520, -10.98500279,
-9.98834422, -8.95729330, -8.01232284, -7.00253661, -5.99681626,
-5.01207817, -3.95914904, -3.01232178, -1.96615919, -0.97687670,
0.01228030, 0.98412288, 2.01753544, 3.00580570, 3.97783510,
4.98846894, 6.01321400, 7.00867732, 8.00416375, 9.01771966,
9.98637729, 10.98255180, 11.99194163, 13.01807333, 14.00999545,
15.00118556, 16.00089224, 17.00584148, 17.98251763, 18.99942091,
19.96917690, 20.97839265, 21.98207297, 23.00171271, 23.99930737,
24.99746061, 26.00936304, 26.98240132, 28.01126868, 29.01395915,
29.98153507, 31.01376711, 31.99876818, 33.00475317, 33.99753994,
34.99493913, 35.98933585, 36.95620160, 37.98428461, 38.99317544,
40.01832073, 40.98048133, 41.95999283, 42.98232091, 43.96523612,
44.99574268, 45.99524194, 47.05464025, 48.03821548, 48.99354366,
49.96400411, 50.98017973, 51.95184408, 52.96291806, 54.00194392,
54.96603783, 55.95623778, 57.03076595, 58.05889901, 58.99081551,
59.97928121, 61.05071612, 62.03971580, 63.01286038, 64.01290338,
65.02074503, 65.99454594, 67.00399425, 67.96571257, 68.95305727,
69.92030664, 70.95594862, 71.98088567, 73.04764124, 74.00285480,
75.02696330, 75.89837673, 76.93459997, 78.16266309, 78.83317543,
80.00000000, 80.87251574, 82.09803524, 83.10671664, 84.00000000,
84.77023523, 86.00000000, 87.00000000, 87.92946897, 88.69159118,
90.00000000, 90.90535270 };
const double WebRtcIsac_kQKltLevelsShape[578] = {
0.00032397, 0.00008053, -0.00061202, -0.00012620, 0.00030437,
0.00054764, -0.00027902, 0.00069360, 0.00029449, -0.80219239,
0.00091089, -0.74514927, -0.00094283, 0.64030631, -0.60509119,
0.00035575, 0.61851665, -0.62129957, 0.00375219, 0.60054900,
-0.61554359, 0.00054977, 0.63362016, -1.73118727, -0.65422341,
0.00524568, 0.66165298, 1.76785515, -1.83182018, -0.65997434,
-0.00011887, 0.67524299, 1.79933938, -1.76344480, -0.72547708,
-0.00133017, 0.73104704, 1.75305377, 2.85164534, -2.80423916,
-1.71959639, -0.75419722, -0.00329945, 0.77196760, 1.72211069,
2.87339653, 0.00031089, -0.00015311, 0.00018201, -0.00035035,
-0.77357251, 0.00154647, -0.00047625, -0.00045299, 0.00086590,
0.00044762, -0.83383829, 0.00024787, -0.68526258, -0.00122472,
0.64643255, -0.60904942, -0.00448987, 0.62309184, -0.59626442,
-0.00574132, 0.62296546, -0.63222115, 0.00013441, 0.63609545,
-0.66911055, -0.00369971, 0.66346095, 2.07281301, -1.77184694,
-0.67640425, -0.00010145, 0.64818392, 1.74948973, -1.69420224,
-0.71943894, -0.00004680, 0.75303493, 1.81075983, 2.80610041,
-2.80005755, -1.79866753, -0.77409777, -0.00084220, 0.80141293,
1.78291081, 2.73954236, 3.82994169, 0.00015140, -0.00012766,
-0.00034241, -0.00119125, -0.76113497, 0.00069246, 0.76722027,
0.00132862, -0.69107530, 0.00010656, 0.77061578, -0.78012970,
0.00095947, 0.77828502, -0.64787758, 0.00217168, 0.63050167,
-0.58601125, 0.00306596, 0.59466308, -0.58603410, 0.00059779,
0.64257970, 1.76512766, -0.61193600, -0.00259517, 0.59767574,
-0.61026273, 0.00315811, 0.61725479, -1.69169719, -0.65816029,
0.00067575, 0.65576890, 2.00000000, -1.72689193, -0.69780808,
-0.00040990, 0.70668487, 1.74198458, -3.79028154, -3.00000000,
-1.73194459, -0.70179341, -0.00106695, 0.71302629, 1.76849782,
-2.89332364, -1.78585007, -0.78731491, -0.00132610, 0.79692976,
1.75247009, 2.97828682, -5.26238694, -3.69559829, -2.87286122,
-1.84908818, -0.84434577, -0.01167975, 0.84641753, 1.84087672,
2.87628156, 3.83556679, -0.00190204, 0.00092642, 0.00354385,
-0.00012982, -0.67742785, 0.00229509, 0.64935672, -0.58444751,
0.00470733, 0.57299534, -0.58456202, -0.00097715, 0.64593607,
-0.64060330, -0.00638534, 0.59680157, -0.59287537, 0.00490772,
0.58919707, -0.60306173, -0.00417464, 0.60562100, -1.75218757,
-0.63018569, -0.00225922, 0.63863300, -0.63949939, -0.00126421,
0.64268914, -1.75851182, -0.68318060, 0.00510418, 0.69049211,
1.88178506, -1.71136148, -0.72710534, -0.00815559, 0.73412917,
1.79996711, -2.77111145, -1.73940498, -0.78212945, 0.01074476,
0.77688916, 1.76873972, 2.87281379, 3.77554698, -3.75832725,
-2.95463235, -1.80451491, -0.80017226, 0.00149902, 0.80729206,
1.78265046, 2.89391793, -3.78236148, -2.83640598, -1.82532067,
-0.88844327, -0.00620952, 0.88208030, 1.85757631, 2.81712391,
3.88430176, 5.16179367, -7.00000000, -5.93805408, -4.87172597,
-3.87524433, -2.89399744, -1.92359563, -0.92136341, -0.00172725,
0.93087018, 1.90528280, 2.89809686, 3.88085708, 4.89147740,
5.89078692, -0.00239502, 0.00312564, -1.00000000, 0.00178325,
1.00000000, -0.62198029, 0.00143254, 0.65344051, -0.59851220,
-0.00676987, 0.61510140, -0.58894151, 0.00385055, 0.59794203,
-0.59808568, -0.00038214, 0.57625703, -0.63009713, -0.01107985,
0.61278758, -0.64206758, -0.00154369, 0.65480598, 1.80604162,
-1.80909286, -0.67810514, 0.00205762, 0.68571097, 1.79453891,
-3.22682422, -1.73808453, -0.71870305, -0.00738594, 0.71486172,
1.73005326, -1.66891897, -0.73689615, -0.00616203, 0.74262409,
1.73807899, -2.92417482, -1.73866741, -0.78133871, 0.00764425,
0.80027264, 1.78668732, 2.74992588, -4.00000000, -2.75578740,
-1.83697516, -0.83117035, -0.00355191, 0.83527172, 1.82814700,
2.77377675, 3.80718693, -3.81667698, -2.83575471, -1.83372350,
-0.86579471, 0.00547578, 0.87582281, 1.82858793, 2.87265007,
3.91405377, -4.87521600, -3.78999094, -2.86437014, -1.86964365,
-0.90618018, 0.00128243, 0.91497811, 1.87374952, 2.83199819,
3.91519130, 4.76632822, -6.68713448, -6.01252467, -4.94587936,
-3.88795368, -2.91299088, -1.92592211, -0.95504570, -0.00089980,
0.94565200, 1.93239633, 2.91832808, 3.91363475, 4.88920034,
5.96471415, 6.83905252, 7.86195009, 8.81571018,-12.96141759,
-11.73039516,-10.96459719, -9.97382433, -9.04414433, -7.89460619,
-6.96628608, -5.93236595, -4.93337924, -3.95479990, -2.96451499,
-1.96635876, -0.97271229, -0.00402238, 0.98343930, 1.98348291,
2.96641164, 3.95456471, 4.95517089, 5.98975714, 6.90322073,
7.90468849, 8.85639467, 9.97255498, 10.79006309, 11.81988596,
0.04950500, -1.00000000, -0.01226628, 1.00000000, -0.59479469,
-0.10438305, 0.59822144, -2.00000000, -0.67109149, -0.09256692,
0.65171621, 2.00000000, -3.00000000, -1.68391999, -0.76681039,
-0.03354151, 0.71509146, 1.77615472, -2.00000000, -0.68661511,
-0.02497881, 0.66478398, 2.00000000, -2.00000000, -0.67032784,
-0.00920582, 0.64892756, 2.00000000, -2.00000000, -0.68561894,
0.03641869, 0.73021611, 1.68293863, -4.00000000, -2.72024184,
-1.80096059, -0.81696185, 0.03604685, 0.79232033, 1.70070730,
3.00000000, -4.00000000, -2.71795670, -1.80482986, -0.86001162,
0.03764903, 0.87723968, 1.79970771, 2.72685932, 3.67589143,
-5.00000000, -4.00000000, -2.85492548, -1.78996365, -0.83250358,
-0.01376828, 0.84195506, 1.78161105, 2.76754458, 4.00000000,
-6.00000000, -5.00000000, -3.82268811, -2.77563624, -1.82608163,
-0.86486114, -0.02671886, 0.86693165, 1.88422879, 2.86248347,
3.95632216, -7.00000000, -6.00000000, -5.00000000, -3.77533988,
-2.86391432, -1.87052039, -0.90513658, 0.06271236, 0.91083620,
1.85734756, 2.86031688, 3.82019418, 4.94420394, 6.00000000,
-11.00000000,-10.00000000, -9.00000000, -8.00000000, -6.91952415,
-6.00000000, -4.92044374, -3.87845165, -2.87392362, -1.88413020,
-0.91915740, 0.00318517, 0.91602800, 1.89664838, 2.88925058,
3.84123856, 4.78988651, 5.94526812, 6.81953917, 8.00000000,
-9.00000000, -8.00000000, -7.03319143, -5.94530963, -4.86669720,
-3.92438007, -2.88620396, -1.92848070, -0.94365985, 0.01671855,
0.97349410, 1.93419878, 2.89740109, 3.89662823, 4.83235583,
5.88106535, 6.80328232, 8.00000000,-13.00000000,-12.00000000,
-11.00000000,-10.00000000, -9.00000000, -7.86033489, -6.83344055,
-5.89844215, -4.90811454, -3.94841298, -2.95820490, -1.98627966,
-0.99161468, -0.02286136, 0.96055651, 1.95052433, 2.93969396,
3.94304346, 4.88522624, 5.87434241, 6.78309433, 7.87244101,
9.00000000, 10.00000000,-12.09117356,-11.00000000,-10.00000000,
-8.84766108, -7.86934236, -6.98544896, -5.94233429, -4.95583292,
-3.95575986, -2.97085529, -1.98955811, -0.99359873, -0.00485413,
0.98298870, 1.98093258, 2.96430203, 3.95540216, 4.96915010,
5.96775124, 6.99236918, 7.96503302, 8.99864542, 9.85857723,
10.96541926, 11.91647197, 12.71060069,-26.00000000,-25.00000000,
-24.00585596,-23.11642573,-22.14271284,-20.89800711,-19.87815799,
-19.05036354,-17.88555651,-16.86471209,-15.97711073,-14.94012359,
-14.02661226,-12.98243228,-11.97489256,-10.97402777, -9.96425624,
-9.01085220, -7.97372506, -6.98795002, -5.97271328, -5.00191694,
-3.98055849, -2.98458048, -1.99470442, -0.99656768, -0.00825666,
1.00272004, 1.99922218, 2.99357669, 4.01407905, 5.01003897,
5.98115528, 7.00018958, 8.00338125, 8.98981046, 9.98990318,
10.96341479, 11.96866930, 12.99175139, 13.94580443, 14.95745083,
15.98992869, 16.97484646, 17.99630043, 18.93396897, 19.88347741,
20.96532482, 21.92191032, 23.22314702 };
/* cdf tables for quantizer indices */
const uint16_t WebRtcIsac_kQKltCdfGain[404] = {
0, 13, 301, 3730, 61784, 65167, 65489, 65535, 0, 17,
142, 314, 929, 2466, 7678, 56450, 63463, 64740, 65204, 65426,
65527, 65535, 0, 8, 100, 724, 6301, 60105, 65125, 65510,
65531, 65535, 0, 13, 117, 368, 1068, 3010, 11928, 53603,
61177, 63404, 64505, 65108, 65422, 65502, 65531, 65535, 0, 4,
17, 96, 410, 1859, 12125, 54361, 64103, 65305, 65497, 65535,
0, 4, 88, 230, 469, 950, 1746, 3228, 6092, 16592,
44756, 56848, 61256, 63308, 64325, 64920, 65309, 65460, 65502,
65522, 65535, 0, 88, 352, 1675, 6339, 20749, 46686, 59284, 63525,
64949, 65359, 65502, 65527, 65535, 0, 13, 38, 63, 117,
234, 381, 641, 929, 1407, 2043, 2809, 4032, 5753, 8792,
14407, 24308, 38941, 48947, 55403, 59293, 61411, 62688, 63630,
64329, 64840, 65188, 65376, 65472, 65506, 65527, 65531, 65535,
0, 8, 29, 75, 222, 615, 1327, 2801, 5623, 9931, 16094, 24966,
34419, 43458, 50676, 56186, 60055, 62500, 63936, 64765, 65225,
65435, 65514, 65535, 0, 8, 13, 15, 17, 21, 33, 59,
71, 92, 151, 243, 360, 456, 674, 934, 1223, 1583,
1989, 2504, 3031, 3617, 4354, 5154, 6163, 7411, 8780, 10747,
12874, 15591, 18974, 23027, 27436, 32020, 36948, 41830, 46205,
49797, 53042, 56094, 58418, 60360, 61763, 62818, 63559, 64103,
64509, 64798, 65045, 65162, 65288, 65363, 65447, 65506, 65522,
65531, 65533, 65535, 0, 4, 6, 25, 38, 71, 138, 264, 519, 808,
1227, 1825, 2516, 3408, 4279, 5560, 7092, 9197, 11420, 14108,
16947, 20300, 23926, 27459, 31164, 34827, 38575, 42178, 45540,
48747, 51444, 54090, 56426, 58460, 60080, 61595, 62734, 63668,
64275, 64673, 64936, 65112, 65217, 65334, 65426, 65464, 65477,
65489, 65518, 65527, 65529, 65531, 65533, 65535, 0, 2, 4, 8, 10,
12, 14, 16, 21, 33, 50, 71, 84, 92, 105, 138, 180, 255, 318,
377, 435, 473, 511, 590, 682, 758, 913, 1097, 1256, 1449, 1671,
1884, 2169, 2445, 2772, 3157, 3563, 3944, 4375, 4848, 5334, 5820,
6448, 7101, 7716, 8378, 9102, 9956, 10752, 11648, 12707, 13670,
14758, 15910, 17187, 18472, 19627, 20649, 21951, 23169, 24283,
25552, 26862, 28227, 29391, 30764, 31882, 33213, 34432, 35600,
36910, 38116, 39464, 40729, 41872, 43144, 44371, 45514, 46762,
47813, 48968, 50069, 51032, 51974, 52908, 53737, 54603, 55445,
56282, 56990, 57572, 58191, 58840, 59410, 59887, 60264, 60607,
60946, 61269, 61516, 61771, 61960, 62198, 62408, 62558, 62776,
62985, 63207, 63408, 63546, 63739, 63906, 64070, 64237, 64371,
64551, 64677, 64836, 64999, 65095, 65213, 65284, 65338, 65380,
65426, 65447, 65472, 65485, 65487, 65489, 65502, 65510, 65512,
65514, 65516, 65518, 65522, 65531, 65533, 65535 };
const uint16_t WebRtcIsac_kQKltCdfShape[686] = {
0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535,
0, 65535, 0, 65535, 0, 65535, 0, 65535, 0, 4,
65535, 0, 8, 65514, 65535, 0, 29, 65481, 65535, 0,
121, 65439, 65535, 0, 239, 65284, 65535, 0, 8, 779,
64999, 65527, 65535, 0, 8, 888, 64693, 65522, 65535, 0,
29, 2604, 62843, 65497, 65531, 65535, 0, 25, 176, 4576,
61164, 65275, 65527, 65535, 0, 65535, 0, 65535, 0, 65535,
0, 65535, 0, 4, 65535, 0, 65535, 0, 65535, 0,
65535, 0, 65535, 0, 4, 65535, 0, 33, 65502, 65535,
0, 54, 65481, 65535, 0, 251, 65309, 65535, 0, 611,
65074, 65535, 0, 1273, 64292, 65527, 65535, 0, 4, 1809,
63940, 65518, 65535, 0, 88, 4392, 60603, 65426, 65531, 65535,
0, 25, 419, 7046, 57756, 64961, 65514, 65531, 65535, 0,
65535, 0, 65535, 0, 65535, 0, 65535, 0, 4, 65531,
65535, 0, 65535, 0, 8, 65531, 65535, 0, 4, 65527,
65535, 0, 17, 65510, 65535, 0, 42, 65481, 65535, 0,
197, 65342, 65531, 65535, 0, 385, 65154, 65535, 0, 1005,
64522, 65535, 0, 8, 1985, 63469, 65533, 65535, 0, 38,
3119, 61884, 65514, 65535, 0, 4, 6, 67, 4961, 60804,
65472, 65535, 0, 17, 565, 9182, 56538, 65087, 65514, 65535,
0, 8, 63, 327, 2118, 14490, 52774, 63839, 65376, 65522,
65535, 0, 65535, 0, 65535, 0, 65535, 0, 65535, 0,
17, 65522, 65535, 0, 59, 65489, 65535, 0, 50, 65522,
65535, 0, 54, 65489, 65535, 0, 310, 65179, 65535, 0,
615, 64836, 65535, 0, 4, 1503, 63965, 65535, 0, 2780,
63383, 65535, 0, 21, 3919, 61051, 65527, 65535, 0, 84,
6674, 59929, 65435, 65535, 0, 4, 255, 7976, 55784, 65150,
65518, 65531, 65535, 0, 4, 8, 582, 10726, 53465, 64949,
65518, 65535, 0, 29, 339, 3006, 17555, 49517, 62956, 65200,
65497, 65531, 65535, 0, 2, 33, 138, 565, 2324, 7670,
22089, 45966, 58949, 63479, 64966, 65380, 65518, 65535, 0, 65535,
0, 65535, 0, 2, 65533, 65535, 0, 46, 65514, 65535,
0, 414, 65091, 65535, 0, 540, 64911, 65535, 0, 419,
65162, 65535, 0, 976, 64790, 65535, 0, 2977, 62495, 65531,
65535, 0, 4, 3852, 61034, 65527, 65535, 0, 4, 29,
6021, 60243, 65468, 65535, 0, 84, 6711, 58066, 65418, 65535,
0, 13, 281, 9550, 54917, 65125, 65506, 65535, 0, 2,
63, 984, 12108, 52644, 64342, 65435, 65527, 65535, 0, 29,
251, 2014, 14871, 47553, 62881, 65229, 65518, 65535, 0, 13,
142, 749, 4220, 18497, 45200, 60913, 64823, 65426, 65527, 65535,
0, 13, 71, 264, 1176, 3789, 10500, 24480, 43488, 56324,
62315, 64493, 65242, 65464, 65514, 65522, 65531, 65535, 0, 4,
13, 38, 109, 205, 448, 850, 1708, 3429, 6276, 11371,
19221, 29734, 40955, 49391, 55411, 59460, 62102, 63793, 64656,
65150, 65401, 65485, 65522, 65531, 65535, 0, 65535, 0, 2, 65533,
65535, 0, 1160, 65476, 65535, 0, 2, 6640, 64763, 65533,
65535, 0, 2, 38, 9923, 61009, 65527, 65535, 0, 2,
4949, 63092, 65533, 65535, 0, 2, 3090, 63398, 65533, 65535,
0, 2, 2520, 58744, 65510, 65535, 0, 2, 13, 544,
8784, 51403, 65148, 65533, 65535, 0, 2, 25, 1017, 10412,
43550, 63651, 65489, 65527, 65535, 0, 2, 4, 29, 783,
13377, 52462, 64524, 65495, 65533, 65535, 0, 2, 4, 6,
100, 1817, 18451, 52590, 63559, 65376, 65531, 65535, 0, 2,
4, 6, 46, 385, 2562, 11225, 37416, 60488, 65026, 65487,
65529, 65533, 65535, 0, 2, 4, 6, 8, 10, 12,
42, 222, 971, 5221, 19811, 45048, 60312, 64486, 65294, 65474,
65525, 65529, 65533, 65535, 0, 2, 4, 8, 71, 167,
666, 2533, 7875, 19622, 38082, 54359, 62108, 64633, 65290, 65495,
65529, 65533, 65535, 0, 2, 4, 6, 8, 10, 13,
109, 586, 1930, 4949, 11600, 22641, 36125, 48312, 56899, 61495,
63927, 64932, 65389, 65489, 65518, 65531, 65533, 65535, 0, 4,
6, 8, 67, 209, 712, 1838, 4195, 8432, 14432, 22834,
31723, 40523, 48139, 53929, 57865, 60657, 62403, 63584, 64363,
64907, 65167, 65372, 65472, 65514, 65535, 0, 2, 4, 13, 25,
42, 46, 50, 75, 113, 147, 281, 448, 657, 909,
1185, 1591, 1976, 2600, 3676, 5317, 7398, 9914, 12941, 16169,
19477, 22885, 26464, 29851, 33360, 37228, 41139, 44802, 48654,
52058, 55181, 57676, 59581, 61022, 62190, 63107, 63676, 64199,
64547, 64924, 65158, 65313, 65430, 65481, 65518, 65535 };
/* pointers to cdf tables for quantizer indices */
const uint16_t *WebRtcIsac_kQKltCdfPtrGain[12] = {
WebRtcIsac_kQKltCdfGain +0 +0, WebRtcIsac_kQKltCdfGain +0 +8,
WebRtcIsac_kQKltCdfGain +0 +22, WebRtcIsac_kQKltCdfGain +0 +32,
WebRtcIsac_kQKltCdfGain +0 +48, WebRtcIsac_kQKltCdfGain +0 +60,
WebRtcIsac_kQKltCdfGain +0 +81, WebRtcIsac_kQKltCdfGain +0 +95,
WebRtcIsac_kQKltCdfGain +0 +128, WebRtcIsac_kQKltCdfGain +0 +152,
WebRtcIsac_kQKltCdfGain +0 +210, WebRtcIsac_kQKltCdfGain +0 +264 };
const uint16_t *WebRtcIsac_kQKltCdfPtrShape[108] = {
WebRtcIsac_kQKltCdfShape +0 +0, WebRtcIsac_kQKltCdfShape +0 +2,
WebRtcIsac_kQKltCdfShape +0 +4, WebRtcIsac_kQKltCdfShape +0 +6,
WebRtcIsac_kQKltCdfShape +0 +8, WebRtcIsac_kQKltCdfShape +0 +10,
WebRtcIsac_kQKltCdfShape +0 +12, WebRtcIsac_kQKltCdfShape +0 +14,
WebRtcIsac_kQKltCdfShape +0 +16, WebRtcIsac_kQKltCdfShape +0 +18,
WebRtcIsac_kQKltCdfShape +0 +21, WebRtcIsac_kQKltCdfShape +0 +25,
WebRtcIsac_kQKltCdfShape +0 +29, WebRtcIsac_kQKltCdfShape +0 +33,
WebRtcIsac_kQKltCdfShape +0 +37, WebRtcIsac_kQKltCdfShape +0 +43,
WebRtcIsac_kQKltCdfShape +0 +49, WebRtcIsac_kQKltCdfShape +0 +56,
WebRtcIsac_kQKltCdfShape +0 +64, WebRtcIsac_kQKltCdfShape +0 +66,
WebRtcIsac_kQKltCdfShape +0 +68, WebRtcIsac_kQKltCdfShape +0 +70,
WebRtcIsac_kQKltCdfShape +0 +72, WebRtcIsac_kQKltCdfShape +0 +75,
WebRtcIsac_kQKltCdfShape +0 +77, WebRtcIsac_kQKltCdfShape +0 +79,
WebRtcIsac_kQKltCdfShape +0 +81, WebRtcIsac_kQKltCdfShape +0 +83,
WebRtcIsac_kQKltCdfShape +0 +86, WebRtcIsac_kQKltCdfShape +0 +90,
WebRtcIsac_kQKltCdfShape +0 +94, WebRtcIsac_kQKltCdfShape +0 +98,
WebRtcIsac_kQKltCdfShape +0 +102, WebRtcIsac_kQKltCdfShape +0 +107,
WebRtcIsac_kQKltCdfShape +0 +113, WebRtcIsac_kQKltCdfShape +0 +120,
WebRtcIsac_kQKltCdfShape +0 +129, WebRtcIsac_kQKltCdfShape +0 +131,
WebRtcIsac_kQKltCdfShape +0 +133, WebRtcIsac_kQKltCdfShape +0 +135,
WebRtcIsac_kQKltCdfShape +0 +137, WebRtcIsac_kQKltCdfShape +0 +141,
WebRtcIsac_kQKltCdfShape +0 +143, WebRtcIsac_kQKltCdfShape +0 +147,
WebRtcIsac_kQKltCdfShape +0 +151, WebRtcIsac_kQKltCdfShape +0 +155,
WebRtcIsac_kQKltCdfShape +0 +159, WebRtcIsac_kQKltCdfShape +0 +164,
WebRtcIsac_kQKltCdfShape +0 +168, WebRtcIsac_kQKltCdfShape +0 +172,
WebRtcIsac_kQKltCdfShape +0 +178, WebRtcIsac_kQKltCdfShape +0 +184,
WebRtcIsac_kQKltCdfShape +0 +192, WebRtcIsac_kQKltCdfShape +0 +200,
WebRtcIsac_kQKltCdfShape +0 +211, WebRtcIsac_kQKltCdfShape +0 +213,
WebRtcIsac_kQKltCdfShape +0 +215, WebRtcIsac_kQKltCdfShape +0 +217,
WebRtcIsac_kQKltCdfShape +0 +219, WebRtcIsac_kQKltCdfShape +0 +223,
WebRtcIsac_kQKltCdfShape +0 +227, WebRtcIsac_kQKltCdfShape +0 +231,
WebRtcIsac_kQKltCdfShape +0 +235, WebRtcIsac_kQKltCdfShape +0 +239,
WebRtcIsac_kQKltCdfShape +0 +243, WebRtcIsac_kQKltCdfShape +0 +248,
WebRtcIsac_kQKltCdfShape +0 +252, WebRtcIsac_kQKltCdfShape +0 +258,
WebRtcIsac_kQKltCdfShape +0 +264, WebRtcIsac_kQKltCdfShape +0 +273,
WebRtcIsac_kQKltCdfShape +0 +282, WebRtcIsac_kQKltCdfShape +0 +293,
WebRtcIsac_kQKltCdfShape +0 +308, WebRtcIsac_kQKltCdfShape +0 +310,
WebRtcIsac_kQKltCdfShape +0 +312, WebRtcIsac_kQKltCdfShape +0 +316,
WebRtcIsac_kQKltCdfShape +0 +320, WebRtcIsac_kQKltCdfShape +0 +324,
WebRtcIsac_kQKltCdfShape +0 +328, WebRtcIsac_kQKltCdfShape +0 +332,
WebRtcIsac_kQKltCdfShape +0 +336, WebRtcIsac_kQKltCdfShape +0 +341,
WebRtcIsac_kQKltCdfShape +0 +347, WebRtcIsac_kQKltCdfShape +0 +354,
WebRtcIsac_kQKltCdfShape +0 +360, WebRtcIsac_kQKltCdfShape +0 +368,
WebRtcIsac_kQKltCdfShape +0 +378, WebRtcIsac_kQKltCdfShape +0 +388,
WebRtcIsac_kQKltCdfShape +0 +400, WebRtcIsac_kQKltCdfShape +0 +418,
WebRtcIsac_kQKltCdfShape +0 +445, WebRtcIsac_kQKltCdfShape +0 +447,
WebRtcIsac_kQKltCdfShape +0 +451, WebRtcIsac_kQKltCdfShape +0 +455,
WebRtcIsac_kQKltCdfShape +0 +461, WebRtcIsac_kQKltCdfShape +0 +468,
WebRtcIsac_kQKltCdfShape +0 +474, WebRtcIsac_kQKltCdfShape +0 +480,
WebRtcIsac_kQKltCdfShape +0 +486, WebRtcIsac_kQKltCdfShape +0 +495,
WebRtcIsac_kQKltCdfShape +0 +505, WebRtcIsac_kQKltCdfShape +0 +516,
WebRtcIsac_kQKltCdfShape +0 +528, WebRtcIsac_kQKltCdfShape +0 +543,
WebRtcIsac_kQKltCdfShape +0 +564, WebRtcIsac_kQKltCdfShape +0 +583,
WebRtcIsac_kQKltCdfShape +0 +608, WebRtcIsac_kQKltCdfShape +0 +635 };
/* left KLT transforms */
const double WebRtcIsac_kKltT1Gain[4] = {
-0.79742827, 0.60341375, 0.60341375, 0.79742827 };
const double WebRtcIsac_kKltT1Shape[324] = {
0.00159597, 0.00049320, 0.00513821, 0.00021066, 0.01338581,
-0.00422367, -0.00272072, 0.00935107, 0.02047622, 0.02691189,
0.00478236, 0.03969702, 0.00886698, 0.04877604, -0.10898362,
-0.05930891, -0.03415047, 0.98889721, 0.00293558, -0.00035282,
0.01156321, -0.00195341, -0.00937631, 0.01052213, -0.02551163,
0.01644059, 0.03189927, 0.07754773, -0.08742313, -0.03026338,
0.05136248, -0.14395974, 0.17725040, 0.22664856, 0.93380230,
0.07076411, 0.00557890, -0.00222834, 0.01377569, 0.01466808,
0.02847361, -0.00603178, 0.02382480, -0.01210452, 0.03797267,
-0.02371480, 0.11260335, -0.07366682, 0.00453436, -0.04136941,
-0.07912843, -0.95031418, 0.25295337, -0.05302216, -0.00617554,
-0.00044040, -0.00653778, 0.01097838, 0.01529174, 0.01374431,
-0.00748512, -0.00020034, 0.02432713, 0.11101570, -0.08556891,
0.09282249, -0.01029446, 0.67556443, -0.67454300, 0.06910063,
0.20866865, -0.10318050, 0.00932175, 0.00524058, 0.00803610,
-0.00594676, -0.01082578, 0.01069906, 0.00546768, 0.01565291,
0.06816200, 0.10201227, 0.16812734, 0.22984074, 0.58213170,
-0.54138651, -0.51379962, 0.06847390, -0.01920037, -0.04592324,
-0.00467394, 0.00328858, 0.00377424, -0.00987448, 0.08222096,
-0.00377301, 0.04551941, -0.02592517, 0.16317082, 0.13077530,
0.22702921, -0.31215289, -0.69645962, -0.38047101, -0.39339411,
0.11124777, 0.02508035, -0.00708074, 0.00400344, 0.00040331,
0.01142402, 0.01725406, 0.01635170, 0.14285366, 0.03949233,
-0.05905676, 0.05877154, -0.17497577, -0.32479440, 0.80754464,
-0.38085603, -0.17055430, -0.03168622, -0.07531451, 0.02942002,
-0.02148095, -0.00754114, -0.00322372, 0.00567812, -0.01701521,
-0.12358320, 0.11473564, 0.09070136, 0.06533068, -0.22560802,
0.19209022, 0.81605094, 0.36592275, -0.09919829, 0.16667122,
0.16300725, 0.04803807, 0.06739263, -0.00156752, -0.01685302,
-0.00905240, -0.02297836, -0.00469939, 0.06310613, -0.16391930,
0.10919511, 0.12529293, 0.85581322, -0.32145522, 0.24539076,
0.07181839, 0.07289591, 0.14066759, 0.10406711, 0.05815518,
0.01072680, -0.00759339, 0.00053486, -0.00044865, 0.03407361,
0.01645348, 0.08758579, 0.27722240, 0.53665485, -0.74853376,
-0.01118192, -0.19805430, 0.06130619, -0.09675299, 0.08978480,
0.03405255, -0.00706867, 0.05102045, 0.03250746, 0.01849966,
-0.01216314, -0.01184187, -0.01579288, 0.00114807, 0.11376166,
0.88342114, -0.36425379, 0.13863190, 0.12524180, -0.13553892,
0.04715856, -0.12341103, 0.04531568, 0.01899360, -0.00206897,
0.00567768, -0.01444163, 0.00411946, -0.00855896, 0.00381663,
-0.01664861, -0.05534280, 0.21328278, 0.20161162, 0.72360394,
0.59130708, -0.08043791, 0.08757349, -0.13893918, -0.05147377,
0.02680690, -0.01144070, 0.00625162, -0.00634215, -0.01248947,
-0.00329455, -0.00609625, -0.00136305, -0.05097048, -0.01029851,
0.25065384, -0.16856837, -0.07123372, 0.15992623, -0.39487617,
-0.79972301, 0.18118185, -0.04826639, -0.01805578, -0.02927253,
-0.16400618, 0.07472763, 0.10376449, 0.01705406, 0.01065801,
-0.01500498, 0.02039914, 0.37776349, -0.84484186, 0.10434286,
0.15616990, 0.13474456, -0.00906238, -0.25238368, -0.03820885,
-0.10650905, -0.03880833, -0.03660028, -0.09640894, 0.00583314,
0.01922097, 0.01489911, -0.02431117, -0.09372217, 0.39404721,
-0.84786223, -0.31277121, 0.03193850, 0.01974060, 0.01887901,
0.00337911, -0.11359599, -0.02792521, -0.03220184, -0.01533311,
0.00015962, -0.04225043, -0.00933965, 0.00675311, 0.00206060,
0.15926771, 0.40199829, -0.80792558, -0.35591604, -0.17169764,
0.02830436, 0.02459982, -0.03438589, 0.00718705, -0.01798329,
-0.01594508, -0.00702430, -0.00952419, -0.00962701, -0.01307212,
-0.01749740, 0.01299602, 0.00587270, -0.36103108, -0.82039266,
-0.43092844, -0.08500097, -0.04361674, -0.00333482, 0.01250434,
-0.02538295, -0.00921797, 0.01645071, -0.01400872, 0.00317607,
0.00003277, -0.01617646, -0.00616863, -0.00882661, 0.00466157,
0.00353237, 0.91803104, -0.39503305, -0.02048964, 0.00060125,
0.01980634, 0.00300109, 0.00313880, 0.00657337, 0.00715163,
0.00000261, 0.00854276, -0.00154825, -0.00516128, 0.00909527,
0.00095609, 0.00701196, -0.00221867, -0.00156741 };
/* right KLT transforms */
const double WebRtcIsac_kKltT2Gain[36] = {
0.14572837, -0.45446306, 0.61990621, -0.52197033, 0.32145074,
-0.11026900, -0.20698282, 0.48962182, -0.27127933, -0.33627476,
0.65094037, -0.32715751, 0.40262573, -0.47844405, -0.33876075,
0.44130653, 0.37383966, -0.39964662, -0.51730480, 0.06611973,
0.49030187, 0.47512886, -0.02141226, -0.51129451, -0.58578569,
-0.39132064, -0.13187771, 0.15649421, 0.40735596, 0.54396897,
0.40381276, 0.40904942, 0.41179766, 0.41167576, 0.40840251,
0.40468132 };
const double WebRtcIsac_kKltT2Shape[36] = {
0.13427386, -0.35132558, 0.52506528, -0.59419077, 0.45075085,
-0.16312057, 0.29857439, -0.58660147, 0.34265431, 0.20879510,
-0.56063262, 0.30238345, 0.43308283, -0.41186999, -0.35288681,
0.42768996, 0.36094634, -0.45284910, -0.47116680, 0.02893449,
0.54326135, 0.45249040, -0.06264420, -0.52283830, 0.57137758,
0.44298139, 0.12617554, -0.20819946, -0.42324603, -0.48876443,
0.39597050, 0.40713935, 0.41389880, 0.41512486, 0.41130400,
0.40575001 };
/* means of log gains and LAR coefficients*/
const double WebRtcIsac_kLpcMeansGain[12] = {
-6.86881911, -5.35075273, -6.86792680, -5.36200897, -6.86401538,
-5.36921533, -6.86802969, -5.36893966, -6.86538097, -5.36315063,
-6.85535304, -5.35155315 };
const double WebRtcIsac_kLpcMeansShape[108] = {
-0.91232981, 0.26258634, -0.33716701, 0.08477430, -0.03378426,
0.14423909, 0.07036185, 0.06155019, 0.01490385, 0.04138740,
0.01427317, 0.01288970, 0.83872106, 0.25750199, 0.07988929,
-0.01957923, 0.00831390, 0.01770300, -0.90957164, 0.25732216,
-0.33385344, 0.08735740, -0.03715332, 0.14584917, 0.06998990,
0.06131968, 0.01504379, 0.04067339, 0.01428039, 0.01406460,
0.83846243, 0.26169862, 0.08109025, -0.01767055, 0.00970539,
0.01954310, -0.90490803, 0.24656405, -0.33578607, 0.08843286,
-0.03749139, 0.14443959, 0.07214669, 0.06170993, 0.01449947,
0.04134309, 0.01314762, 0.01413471, 0.83895203, 0.26748062,
0.08197507, -0.01781298, 0.00885967, 0.01922394, -0.90922472,
0.24495889, -0.33921540, 0.08877169, -0.03581332, 0.14199172,
0.07444032, 0.06185940, 0.01502054, 0.04185113, 0.01276579,
0.01355457, 0.83645358, 0.26631720, 0.08119697, -0.01835449,
0.00788512, 0.01846446, -0.90482253, 0.24658310, -0.34019734,
0.08281090, -0.03486038, 0.14359248, 0.07401336, 0.06001471,
0.01528421, 0.04254560, 0.01321472, 0.01240799, 0.83857127,
0.26281654, 0.08174380, -0.02099842, 0.00755176, 0.01699448,
-0.90132307, 0.25174308, -0.33838268, 0.07883863, -0.02877906,
0.14105407, 0.07220290, 0.06000352, 0.01684879, 0.04226844,
0.01331331, 0.01269244, 0.83832138, 0.25467485, 0.08118028,
-0.02120528, 0.00747832, 0.01567212 };

100
webrtc/modules/audio_coding/codecs/isac/main/source/lpc_tables.h Normal file
View File

@ -0,0 +1,100 @@
/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* lpc_tables.h
*
* header file for coding tables for the LPC coefficients
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_
#include "structs.h"
#include "settings.h"
#define KLT_STEPSIZE 1.00000000
#define KLT_NUM_AVG_GAIN 0
#define KLT_NUM_AVG_SHAPE 0
#define KLT_NUM_MODELS 3
#define LPC_GAIN_SCALE 4.000f
#define LPC_LOBAND_SCALE 2.100f
#define LPC_LOBAND_ORDER ORDERLO
#define LPC_HIBAND_SCALE 0.450f
#define LPC_HIBAND_ORDER ORDERHI
#define LPC_GAIN_ORDER 2
#define LPC_SHAPE_ORDER (LPC_LOBAND_ORDER + LPC_HIBAND_ORDER)
#define KLT_ORDER_GAIN (LPC_GAIN_ORDER * SUBFRAMES)
#define KLT_ORDER_SHAPE (LPC_SHAPE_ORDER * SUBFRAMES)
/* cdf array for model indicator */
extern const uint16_t WebRtcIsac_kQKltModelCdf[KLT_NUM_MODELS+1];
/* pointer to cdf array for model indicator */
extern const uint16_t *WebRtcIsac_kQKltModelCdfPtr[1];
/* initial cdf index for decoder of model indicator */
extern const uint16_t WebRtcIsac_kQKltModelInitIndex[1];
/* offset to go from rounded value to quantization index */
extern const short WebRtcIsac_kQKltQuantMinGain[12];
extern const short WebRtcIsac_kQKltQuantMinShape[108];
/* maximum quantization index */
extern const uint16_t WebRtcIsac_kQKltMaxIndGain[12];
extern const uint16_t WebRtcIsac_kQKltMaxIndShape[108];
/* index offset */
extern const uint16_t WebRtcIsac_kQKltOffsetGain[12];
extern const uint16_t WebRtcIsac_kQKltOffsetShape[108];
/* initial cdf index for KLT coefficients */
extern const uint16_t WebRtcIsac_kQKltInitIndexGain[12];
extern const uint16_t WebRtcIsac_kQKltInitIndexShape[108];
/* quantizer representation levels */
extern const double WebRtcIsac_kQKltLevelsGain[392];
extern const double WebRtcIsac_kQKltLevelsShape[578];
/* cdf tables for quantizer indices */
extern const uint16_t WebRtcIsac_kQKltCdfGain[404];
extern const uint16_t WebRtcIsac_kQKltCdfShape[686];
/* pointers to cdf tables for quantizer indices */
extern const uint16_t *WebRtcIsac_kQKltCdfPtrGain[12];
extern const uint16_t *WebRtcIsac_kQKltCdfPtrShape[108];
/* left KLT transforms */
extern const double WebRtcIsac_kKltT1Gain[4];
extern const double WebRtcIsac_kKltT1Shape[324];
/* right KLT transforms */
extern const double WebRtcIsac_kKltT2Gain[36];
extern const double WebRtcIsac_kKltT2Shape[36];
/* means of log gains and LAR coefficients */
extern const double WebRtcIsac_kLpcMeansGain[12];
extern const double WebRtcIsac_kLpcMeansShape[108];
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_ */

41
webrtc/modules/audio_coding/codecs/isac/main/source/os_specific_inline.h Normal file
View File

@ -0,0 +1,41 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_OS_SPECIFIC_INLINE_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_OS_SPECIFIC_INLINE_H_
#include <math.h>
#include "webrtc/typedefs.h"
#if defined(WEBRTC_POSIX)
#define WebRtcIsac_lrint lrint
#elif (defined(WEBRTC_ARCH_X86) && defined(WIN32))
static __inline long int WebRtcIsac_lrint(double x_dbl) {
long int x_int;
__asm {
fld x_dbl
fistp x_int
};
return x_int;
}
#else // Do a slow but correct implementation of lrint
static __inline long int WebRtcIsac_lrint(double x_dbl) {
long int x_int;
x_int = (long int)floor(x_dbl + 0.499999999999);
return x_int;
}
#endif
#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_OS_SPECIFIC_INLINE_H_

623
webrtc/modules/audio_coding/codecs/isac/main/source/pitch_estimator.c Normal file
View File

@ -0,0 +1,623 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "pitch_estimator.h"
#include <math.h>
#include <memory.h>
#include <string.h>
#ifdef WEBRTC_ANDROID
#include <stdlib.h>
#endif
static const double kInterpolWin[8] = {-0.00067556028640, 0.02184247643159, -0.12203175715679, 0.60086484101160,
0.60086484101160, -0.12203175715679, 0.02184247643159, -0.00067556028640};
/* interpolation filter */
__inline static void IntrepolFilter(double *data_ptr, double *intrp)
{
*intrp = kInterpolWin[0] * data_ptr[-3];
*intrp += kInterpolWin[1] * data_ptr[-2];
*intrp += kInterpolWin[2] * data_ptr[-1];
*intrp += kInterpolWin[3] * data_ptr[0];
*intrp += kInterpolWin[4] * data_ptr[1];
*intrp += kInterpolWin[5] * data_ptr[2];
*intrp += kInterpolWin[6] * data_ptr[3];
*intrp += kInterpolWin[7] * data_ptr[4];
}
/* 2D parabolic interpolation */
/* probably some 0.5 factors can be eliminated, and the square-roots can be removed from the Cholesky fact. */
__inline static void Intrpol2D(double T[3][3], double *x, double *y, double *peak_val)
{
double c, b[2], A[2][2];
double t1, t2, d;
double delta1, delta2;
// double T[3][3] = {{-1.25, -.25,-.25}, {-.25, .75, .75}, {-.25, .75, .75}};
// should result in: delta1 = 0.5; delta2 = 0.0; peak_val = 1.0
c = T[1][1];
b[0] = 0.5 * (T[1][2] + T[2][1] - T[0][1] - T[1][0]);
b[1] = 0.5 * (T[1][0] + T[2][1] - T[0][1] - T[1][2]);
A[0][1] = -0.5 * (T[0][1] + T[2][1] - T[1][0] - T[1][2]);
t1 = 0.5 * (T[0][0] + T[2][2]) - c;
t2 = 0.5 * (T[2][0] + T[0][2]) - c;
d = (T[0][1] + T[1][2] + T[1][0] + T[2][1]) - 4.0 * c - t1 - t2;
A[0][0] = -t1 - 0.5 * d;
A[1][1] = -t2 - 0.5 * d;
/* deal with singularities or ill-conditioned cases */
if ( (A[0][0] < 1e-7) || ((A[0][0] * A[1][1] - A[0][1] * A[0][1]) < 1e-7) ) {
*peak_val = T[1][1];
return;
}
/* Cholesky decomposition: replace A by upper-triangular factor */
A[0][0] = sqrt(A[0][0]);
A[0][1] = A[0][1] / A[0][0];
A[1][1] = sqrt(A[1][1] - A[0][1] * A[0][1]);
/* compute [x; y] = -0.5 * inv(A) * b */
t1 = b[0] / A[0][0];
t2 = (b[1] - t1 * A[0][1]) / A[1][1];
delta2 = t2 / A[1][1];
delta1 = 0.5 * (t1 - delta2 * A[0][1]) / A[0][0];
delta2 *= 0.5;
/* limit norm */
t1 = delta1 * delta1 + delta2 * delta2;
if (t1 > 1.0) {
delta1 /= t1;
delta2 /= t1;
}
*peak_val = 0.5 * (b[0] * delta1 + b[1] * delta2) + c;
*x += delta1;
*y += delta2;
}
static void PCorr(const double *in, double *outcorr)
{
double sum, ysum, prod;
const double *x, *inptr;
int k, n;
//ysum = 1e-6; /* use this with float (i.s.o. double)! */
ysum = 1e-13;
sum = 0.0;
x = in + PITCH_MAX_LAG/2 + 2;
for (n = 0; n < PITCH_CORR_LEN2; n++) {
ysum += in[n] * in[n];
sum += x[n] * in[n];
}
outcorr += PITCH_LAG_SPAN2 - 1; /* index of last element in array */
*outcorr = sum / sqrt(ysum);
for (k = 1; k < PITCH_LAG_SPAN2; k++) {
ysum -= in[k-1] * in[k-1];
ysum += in[PITCH_CORR_LEN2 + k - 1] * in[PITCH_CORR_LEN2 + k - 1];
sum = 0.0;
inptr = &in[k];
prod = x[0] * inptr[0];
for (n = 1; n < PITCH_CORR_LEN2; n++) {
sum += prod;
prod = x[n] * inptr[n];
}
sum += prod;
outcorr--;
*outcorr = sum / sqrt(ysum);
}
}
void WebRtcIsac_InitializePitch(const double *in,
const double old_lag,
const double old_gain,
PitchAnalysisStruct *State,
double *lags)
{
double buf_dec[PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2+2];
double ratio, log_lag, gain_bias;
double bias;
double corrvec1[PITCH_LAG_SPAN2];
double corrvec2[PITCH_LAG_SPAN2];
int m, k;
// Allocating 10 extra entries at the begining of the CorrSurf
double corrSurfBuff[10 + (2*PITCH_BW+3)*(PITCH_LAG_SPAN2+4)];
double* CorrSurf[2*PITCH_BW+3];
double *CorrSurfPtr1, *CorrSurfPtr2;
double LagWin[3] = {0.2, 0.5, 0.98};
int ind1, ind2, peaks_ind, peak, max_ind;
int peaks[PITCH_MAX_NUM_PEAKS];
double adj, gain_tmp;
double corr, corr_max;
double intrp_a, intrp_b, intrp_c, intrp_d;
double peak_vals[PITCH_MAX_NUM_PEAKS];
double lags1[PITCH_MAX_NUM_PEAKS];
double lags2[PITCH_MAX_NUM_PEAKS];
double T[3][3];
int row;
for(k = 0; k < 2*PITCH_BW+3; k++)
{
CorrSurf[k] = &corrSurfBuff[10 + k * (PITCH_LAG_SPAN2+4)];
}
/* reset CorrSurf matrix */
memset(corrSurfBuff, 0, sizeof(double) * (10 + (2*PITCH_BW+3) * (PITCH_LAG_SPAN2+4)));
//warnings -DH
max_ind = 0;
peak = 0;
/* copy old values from state buffer */
memcpy(buf_dec, State->dec_buffer, sizeof(double) * (PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2));
/* decimation; put result after the old values */
WebRtcIsac_DecimateAllpass(in, State->decimator_state, PITCH_FRAME_LEN,
&buf_dec[PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2]);
/* low-pass filtering */
for (k = PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2; k < PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2+2; k++)
buf_dec[k] += 0.75 * buf_dec[k-1] - 0.25 * buf_dec[k-2];
/* copy end part back into state buffer */
memcpy(State->dec_buffer, buf_dec+PITCH_FRAME_LEN/2, sizeof(double) * (PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2));
/* compute correlation for first and second half of the frame */
PCorr(buf_dec, corrvec1);
PCorr(buf_dec + PITCH_CORR_STEP2, corrvec2);
/* bias towards pitch lag of previous frame */
log_lag = log(0.5 * old_lag);
gain_bias = 4.0 * old_gain * old_gain;
if (gain_bias > 0.8) gain_bias = 0.8;
for (k = 0; k < PITCH_LAG_SPAN2; k++)
{
ratio = log((double) (k + (PITCH_MIN_LAG/2-2))) - log_lag;
bias = 1.0 + gain_bias * exp(-5.0 * ratio * ratio);
corrvec1[k] *= bias;
}
/* taper correlation functions */
for (k = 0; k < 3; k++) {
gain_tmp = LagWin[k];
corrvec1[k] *= gain_tmp;
corrvec2[k] *= gain_tmp;
corrvec1[PITCH_LAG_SPAN2-1-k] *= gain_tmp;
corrvec2[PITCH_LAG_SPAN2-1-k] *= gain_tmp;
}
corr_max = 0.0;
/* fill middle row of correlation surface */
ind1 = 0;
ind2 = 0;
CorrSurfPtr1 = &CorrSurf[PITCH_BW][2];
for (k = 0; k < PITCH_LAG_SPAN2; k++) {
corr = corrvec1[ind1++] + corrvec2[ind2++];
CorrSurfPtr1[k] = corr;
if (corr > corr_max) {
corr_max = corr; /* update maximum */
max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]);
}
}
/* fill first and last rows of correlation surface */
ind1 = 0;
ind2 = PITCH_BW;
CorrSurfPtr1 = &CorrSurf[0][2];
CorrSurfPtr2 = &CorrSurf[2*PITCH_BW][PITCH_BW+2];
for (k = 0; k < PITCH_LAG_SPAN2-PITCH_BW; k++) {
ratio = ((double) (ind1 + 12)) / ((double) (ind2 + 12));
adj = 0.2 * ratio * (2.0 - ratio); /* adjustment factor; inverse parabola as a function of ratio */
corr = adj * (corrvec1[ind1] + corrvec2[ind2]);
CorrSurfPtr1[k] = corr;
if (corr > corr_max) {
corr_max = corr; /* update maximum */
max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]);
}
corr = adj * (corrvec1[ind2++] + corrvec2[ind1++]);
CorrSurfPtr2[k] = corr;
if (corr > corr_max) {
corr_max = corr; /* update maximum */
max_ind = (int)(&CorrSurfPtr2[k] - &CorrSurf[0][0]);
}
}
/* fill second and next to last rows of correlation surface */
ind1 = 0;
ind2 = PITCH_BW-1;
CorrSurfPtr1 = &CorrSurf[1][2];
CorrSurfPtr2 = &CorrSurf[2*PITCH_BW-1][PITCH_BW+1];
for (k = 0; k < PITCH_LAG_SPAN2-PITCH_BW+1; k++) {
ratio = ((double) (ind1 + 12)) / ((double) (ind2 + 12));
adj = 0.9 * ratio * (2.0 - ratio); /* adjustment factor; inverse parabola as a function of ratio */
corr = adj * (corrvec1[ind1] + corrvec2[ind2]);
CorrSurfPtr1[k] = corr;
if (corr > corr_max) {
corr_max = corr; /* update maximum */
max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]);
}
corr = adj * (corrvec1[ind2++] + corrvec2[ind1++]);
CorrSurfPtr2[k] = corr;
if (corr > corr_max) {
corr_max = corr; /* update maximum */
max_ind = (int)(&CorrSurfPtr2[k] - &CorrSurf[0][0]);
}
}
/* fill remainder of correlation surface */
for (m = 2; m < PITCH_BW; m++) {
ind1 = 0;
ind2 = PITCH_BW - m; /* always larger than ind1 */
CorrSurfPtr1 = &CorrSurf[m][2];
CorrSurfPtr2 = &CorrSurf[2*PITCH_BW-m][PITCH_BW+2-m];
for (k = 0; k < PITCH_LAG_SPAN2-PITCH_BW+m; k++) {
ratio = ((double) (ind1 + 12)) / ((double) (ind2 + 12));
adj = ratio * (2.0 - ratio); /* adjustment factor; inverse parabola as a function of ratio */
corr = adj * (corrvec1[ind1] + corrvec2[ind2]);
CorrSurfPtr1[k] = corr;
if (corr > corr_max) {
corr_max = corr; /* update maximum */
max_ind = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]);
}
corr = adj * (corrvec1[ind2++] + corrvec2[ind1++]);
CorrSurfPtr2[k] = corr;
if (corr > corr_max) {
corr_max = corr; /* update maximum */
max_ind = (int)(&CorrSurfPtr2[k] - &CorrSurf[0][0]);
}
}
}
/* threshold value to qualify as a peak */
corr_max *= 0.6;
peaks_ind = 0;
/* find peaks */
for (m = 1; m < PITCH_BW+1; m++) {
if (peaks_ind == PITCH_MAX_NUM_PEAKS) break;
CorrSurfPtr1 = &CorrSurf[m][2];
for (k = 2; k < PITCH_LAG_SPAN2-PITCH_BW-2+m; k++) {
corr = CorrSurfPtr1[k];
if (corr > corr_max) {
if ( (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+5)]) && (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+4)]) ) {
if ( (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+4)]) && (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+5)]) ) {
/* found a peak; store index into matrix */
peaks[peaks_ind++] = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]);
if (peaks_ind == PITCH_MAX_NUM_PEAKS) break;
}
}
}
}
}
for (m = PITCH_BW+1; m < 2*PITCH_BW; m++) {
if (peaks_ind == PITCH_MAX_NUM_PEAKS) break;
CorrSurfPtr1 = &CorrSurf[m][2];
for (k = 2+m-PITCH_BW; k < PITCH_LAG_SPAN2-2; k++) {
corr = CorrSurfPtr1[k];
if (corr > corr_max) {
if ( (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+5)]) && (corr > CorrSurfPtr1[k - (PITCH_LAG_SPAN2+4)]) ) {
if ( (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+4)]) && (corr > CorrSurfPtr1[k + (PITCH_LAG_SPAN2+5)]) ) {
/* found a peak; store index into matrix */
peaks[peaks_ind++] = (int)(&CorrSurfPtr1[k] - &CorrSurf[0][0]);
if (peaks_ind == PITCH_MAX_NUM_PEAKS) break;
}
}
}
}
}
if (peaks_ind > 0) {
/* examine each peak */
CorrSurfPtr1 = &CorrSurf[0][0];
for (k = 0; k < peaks_ind; k++) {
peak = peaks[k];
/* compute four interpolated values around current peak */
IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)], &intrp_a);
IntrepolFilter(&CorrSurfPtr1[peak - 1 ], &intrp_b);
IntrepolFilter(&CorrSurfPtr1[peak ], &intrp_c);
IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)], &intrp_d);
/* determine maximum of the interpolated values */
corr = CorrSurfPtr1[peak];
corr_max = intrp_a;
if (intrp_b > corr_max) corr_max = intrp_b;
if (intrp_c > corr_max) corr_max = intrp_c;
if (intrp_d > corr_max) corr_max = intrp_d;
/* determine where the peak sits and fill a 3x3 matrix around it */
row = peak / (PITCH_LAG_SPAN2+4);
lags1[k] = (double) ((peak - row * (PITCH_LAG_SPAN2+4)) + PITCH_MIN_LAG/2 - 4);
lags2[k] = (double) (lags1[k] + PITCH_BW - row);
if ( corr > corr_max ) {
T[0][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)];
T[2][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)];
T[1][1] = corr;
T[0][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)];
T[2][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)];
T[1][0] = intrp_a;
T[0][1] = intrp_b;
T[2][1] = intrp_c;
T[1][2] = intrp_d;
} else {
if (intrp_a == corr_max) {
lags1[k] -= 0.5;
lags2[k] += 0.5;
IntrepolFilter(&CorrSurfPtr1[peak - 2*(PITCH_LAG_SPAN2+5)], &T[0][0]);
IntrepolFilter(&CorrSurfPtr1[peak - (2*PITCH_LAG_SPAN2+9)], &T[2][0]);
T[1][1] = intrp_a;
T[0][2] = intrp_b;
T[2][2] = intrp_c;
T[1][0] = CorrSurfPtr1[peak - (2*PITCH_LAG_SPAN2+9)];
T[0][1] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)];
T[2][1] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)];
T[1][2] = corr;
} else if (intrp_b == corr_max) {
lags1[k] -= 0.5;
lags2[k] -= 0.5;
IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+6)], &T[0][0]);
T[2][0] = intrp_a;
T[1][1] = intrp_b;
IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+3)], &T[0][2]);
T[2][2] = intrp_d;
T[1][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)];
T[0][1] = CorrSurfPtr1[peak - 1];
T[2][1] = corr;
T[1][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)];
} else if (intrp_c == corr_max) {
lags1[k] += 0.5;
lags2[k] += 0.5;
T[0][0] = intrp_a;
IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)], &T[2][0]);
T[1][1] = intrp_c;
T[0][2] = intrp_d;
IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)], &T[2][2]);
T[1][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)];
T[0][1] = corr;
T[2][1] = CorrSurfPtr1[peak + 1];
T[1][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)];
} else {
lags1[k] += 0.5;
lags2[k] -= 0.5;
T[0][0] = intrp_b;
T[2][0] = intrp_c;
T[1][1] = intrp_d;
IntrepolFilter(&CorrSurfPtr1[peak + 2*(PITCH_LAG_SPAN2+4)], &T[0][2]);
IntrepolFilter(&CorrSurfPtr1[peak + (2*PITCH_LAG_SPAN2+9)], &T[2][2]);
T[1][0] = corr;
T[0][1] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)];
T[2][1] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)];
T[1][2] = CorrSurfPtr1[peak + (2*PITCH_LAG_SPAN2+9)];
}
}
/* 2D parabolic interpolation gives more accurate lags and peak value */
Intrpol2D(T, &lags1[k], &lags2[k], &peak_vals[k]);
}
/* determine the highest peak, after applying a bias towards short lags */
corr_max = 0.0;
for (k = 0; k < peaks_ind; k++) {
corr = peak_vals[k] * pow(PITCH_PEAK_DECAY, log(lags1[k] + lags2[k]));
if (corr > corr_max) {
corr_max = corr;
peak = k;
}
}
lags1[peak] *= 2.0;
lags2[peak] *= 2.0;
if (lags1[peak] < (double) PITCH_MIN_LAG) lags1[peak] = (double) PITCH_MIN_LAG;
if (lags2[peak] < (double) PITCH_MIN_LAG) lags2[peak] = (double) PITCH_MIN_LAG;
if (lags1[peak] > (double) PITCH_MAX_LAG) lags1[peak] = (double) PITCH_MAX_LAG;
if (lags2[peak] > (double) PITCH_MAX_LAG) lags2[peak] = (double) PITCH_MAX_LAG;
/* store lags of highest peak in output array */
lags[0] = lags1[peak];
lags[1] = lags1[peak];
lags[2] = lags2[peak];
lags[3] = lags2[peak];
}
else
{
row = max_ind / (PITCH_LAG_SPAN2+4);
lags1[0] = (double) ((max_ind - row * (PITCH_LAG_SPAN2+4)) + PITCH_MIN_LAG/2 - 4);
lags2[0] = (double) (lags1[0] + PITCH_BW - row);
if (lags1[0] < (double) PITCH_MIN_LAG) lags1[0] = (double) PITCH_MIN_LAG;
if (lags2[0] < (double) PITCH_MIN_LAG) lags2[0] = (double) PITCH_MIN_LAG;
if (lags1[0] > (double) PITCH_MAX_LAG) lags1[0] = (double) PITCH_MAX_LAG;
if (lags2[0] > (double) PITCH_MAX_LAG) lags2[0] = (double) PITCH_MAX_LAG;
/* store lags of highest peak in output array */
lags[0] = lags1[0];
lags[1] = lags1[0];
lags[2] = lags2[0];
lags[3] = lags2[0];
}
}
/* create weighting matrix by orthogonalizing a basis of polynomials of increasing order
* t = (0:4)';
* A = [t.^0, t.^1, t.^2, t.^3, t.^4];
* [Q, dummy] = qr(A);
* P.Weight = Q * diag([0, .1, .5, 1, 1]) * Q'; */
static const double kWeight[5][5] = {
{ 0.29714285714286, -0.30857142857143, -0.05714285714286, 0.05142857142857, 0.01714285714286},
{-0.30857142857143, 0.67428571428571, -0.27142857142857, -0.14571428571429, 0.05142857142857},
{-0.05714285714286, -0.27142857142857, 0.65714285714286, -0.27142857142857, -0.05714285714286},
{ 0.05142857142857, -0.14571428571429, -0.27142857142857, 0.67428571428571, -0.30857142857143},
{ 0.01714285714286, 0.05142857142857, -0.05714285714286, -0.30857142857143, 0.29714285714286}
};
void WebRtcIsac_PitchAnalysis(const double *in, /* PITCH_FRAME_LEN samples */
double *out, /* PITCH_FRAME_LEN+QLOOKAHEAD samples */
PitchAnalysisStruct *State,
double *lags,
double *gains)
{
double HPin[PITCH_FRAME_LEN];
double Weighted[PITCH_FRAME_LEN];
double Whitened[PITCH_FRAME_LEN + QLOOKAHEAD];
double inbuf[PITCH_FRAME_LEN + QLOOKAHEAD];
double out_G[PITCH_FRAME_LEN + QLOOKAHEAD]; // could be removed by using out instead
double out_dG[4][PITCH_FRAME_LEN + QLOOKAHEAD];
double old_lag, old_gain;
double nrg_wht, tmp;
double Wnrg, Wfluct, Wgain;
double H[4][4];
double grad[4];
double dG[4];
int k, m, n, iter;
/* high pass filtering using second order pole-zero filter */
WebRtcIsac_Highpass(in, HPin, State->hp_state, PITCH_FRAME_LEN);
/* copy from state into buffer */
memcpy(Whitened, State->whitened_buf, sizeof(double) * QLOOKAHEAD);
/* compute weighted and whitened signals */
WebRtcIsac_WeightingFilter(HPin, &Weighted[0], &Whitened[QLOOKAHEAD], &(State->Wghtstr));
/* copy from buffer into state */
memcpy(State->whitened_buf, Whitened+PITCH_FRAME_LEN, sizeof(double) * QLOOKAHEAD);
old_lag = State->PFstr_wght.oldlagp[0];
old_gain = State->PFstr_wght.oldgainp[0];
/* inital pitch estimate */
WebRtcIsac_InitializePitch(Weighted, old_lag, old_gain, State, lags);
/* Iterative optimization of lags - to be done */
/* compute energy of whitened signal */
nrg_wht = 0.0;
for (k = 0; k < PITCH_FRAME_LEN + QLOOKAHEAD; k++)
nrg_wht += Whitened[k] * Whitened[k];
/* Iterative optimization of gains */
/* set weights for energy, gain fluctiation, and spectral gain penalty functions */
Wnrg = 1.0 / nrg_wht;
Wgain = 0.005;
Wfluct = 3.0;
/* set initial gains */
for (k = 0; k < 4; k++)
gains[k] = PITCH_MAX_GAIN_06;
/* two iterations should be enough */
for (iter = 0; iter < 2; iter++) {
/* compute Jacobian of pre-filter output towards gains */
WebRtcIsac_PitchfilterPre_gains(Whitened, out_G, out_dG, &(State->PFstr_wght), lags, gains);
/* gradient and approximate Hessian (lower triangle) for minimizing the filter's output power */
for (k = 0; k < 4; k++) {
tmp = 0.0;
for (n = 0; n < PITCH_FRAME_LEN + QLOOKAHEAD; n++)
tmp += out_G[n] * out_dG[k][n];
grad[k] = tmp * Wnrg;
}
for (k = 0; k < 4; k++) {
for (m = 0; m <= k; m++) {
tmp = 0.0;
for (n = 0; n < PITCH_FRAME_LEN + QLOOKAHEAD; n++)
tmp += out_dG[m][n] * out_dG[k][n];
H[k][m] = tmp * Wnrg;
}
}
/* add gradient and Hessian (lower triangle) for dampening fast gain changes */
for (k = 0; k < 4; k++) {
tmp = kWeight[k+1][0] * old_gain;
for (m = 0; m < 4; m++)
tmp += kWeight[k+1][m+1] * gains[m];
grad[k] += tmp * Wfluct;
}
for (k = 0; k < 4; k++) {
for (m = 0; m <= k; m++) {
H[k][m] += kWeight[k+1][m+1] * Wfluct;
}
}
/* add gradient and Hessian for dampening gain */
for (k = 0; k < 3; k++) {
tmp = 1.0 / (1 - gains[k]);
grad[k] += tmp * tmp * Wgain;
H[k][k] += 2.0 * tmp * (tmp * tmp * Wgain);
}
tmp = 1.0 / (1 - gains[3]);
grad[3] += 1.33 * (tmp * tmp * Wgain);
H[3][3] += 2.66 * tmp * (tmp * tmp * Wgain);
/* compute Cholesky factorization of Hessian
* by overwritting the upper triangle; scale factors on diagonal
* (for non pc-platforms store the inverse of the diagonals seperately to minimize divisions) */
H[0][1] = H[1][0] / H[0][0];
H[0][2] = H[2][0] / H[0][0];
H[0][3] = H[3][0] / H[0][0];
H[1][1] -= H[0][0] * H[0][1] * H[0][1];
H[1][2] = (H[2][1] - H[0][1] * H[2][0]) / H[1][1];
H[1][3] = (H[3][1] - H[0][1] * H[3][0]) / H[1][1];
H[2][2] -= H[0][0] * H[0][2] * H[0][2] + H[1][1] * H[1][2] * H[1][2];
H[2][3] = (H[3][2] - H[0][2] * H[3][0] - H[1][2] * H[1][1] * H[1][3]) / H[2][2];
H[3][3] -= H[0][0] * H[0][3] * H[0][3] + H[1][1] * H[1][3] * H[1][3] + H[2][2] * H[2][3] * H[2][3];
/* Compute update as delta_gains = -inv(H) * grad */
/* copy and negate */
for (k = 0; k < 4; k++)
dG[k] = -grad[k];
/* back substitution */
dG[1] -= dG[0] * H[0][1];
dG[2] -= dG[0] * H[0][2] + dG[1] * H[1][2];
dG[3] -= dG[0] * H[0][3] + dG[1] * H[1][3] + dG[2] * H[2][3];
/* scale */
for (k = 0; k < 4; k++)
dG[k] /= H[k][k];
/* back substitution */
dG[2] -= dG[3] * H[2][3];
dG[1] -= dG[3] * H[1][3] + dG[2] * H[1][2];
dG[0] -= dG[3] * H[0][3] + dG[2] * H[0][2] + dG[1] * H[0][1];
/* update gains and check range */
for (k = 0; k < 4; k++) {
gains[k] += dG[k];
if (gains[k] > PITCH_MAX_GAIN)
gains[k] = PITCH_MAX_GAIN;
else if (gains[k] < 0.0)
gains[k] = 0.0;
}
}
/* update state for next frame */
WebRtcIsac_PitchfilterPre(Whitened, out, &(State->PFstr_wght), lags, gains);
/* concatenate previous input's end and current input */
memcpy(inbuf, State->inbuf, sizeof(double) * QLOOKAHEAD);
memcpy(inbuf+QLOOKAHEAD, in, sizeof(double) * PITCH_FRAME_LEN);
/* lookahead pitch filtering for masking analysis */
WebRtcIsac_PitchfilterPre_la(inbuf, out, &(State->PFstr), lags, gains);
/* store last part of input */
for (k = 0; k < QLOOKAHEAD; k++)
State->inbuf[k] = inbuf[k + PITCH_FRAME_LEN];
}

75
webrtc/modules/audio_coding/codecs/isac/main/source/pitch_estimator.h Normal file
View File

@ -0,0 +1,75 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* pitch_estimator.h
*
* Pitch functions
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_ESTIMATOR_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_ESTIMATOR_H_
#include "structs.h"
void WebRtcIsac_PitchAnalysis(const double *in, /* PITCH_FRAME_LEN samples */
double *out, /* PITCH_FRAME_LEN+QLOOKAHEAD samples */
PitchAnalysisStruct *State,
double *lags,
double *gains);
void WebRtcIsac_InitializePitch(const double *in,
const double old_lag,
const double old_gain,
PitchAnalysisStruct *State,
double *lags);
void WebRtcIsac_PitchfilterPre(double *indat,
double *outdat,
PitchFiltstr *pfp,
double *lags,
double *gains);
void WebRtcIsac_PitchfilterPost(double *indat,
double *outdat,
PitchFiltstr *pfp,
double *lags,
double *gains);
void WebRtcIsac_PitchfilterPre_la(double *indat,
double *outdat,
PitchFiltstr *pfp,
double *lags,
double *gains);
void WebRtcIsac_PitchfilterPre_gains(double *indat,
double *outdat,
double out_dG[][PITCH_FRAME_LEN + QLOOKAHEAD],
PitchFiltstr *pfp,
double *lags,
double *gains);
void WebRtcIsac_WeightingFilter(const double *in, double *weiout, double *whiout, WeightFiltstr *wfdata);
void WebRtcIsac_Highpass(const double *in,
double *out,
double *state,
size_t N);
void WebRtcIsac_DecimateAllpass(const double *in,
double *state_in, /* array of size:
* 2*ALLPASSSECTIONS+1 */
size_t N, /* number of input samples */
double *out); /* array of size N/2 */
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_ESTIMATOR_H_ */

105
webrtc/modules/audio_coding/codecs/isac/main/source/pitch_gain_tables.c Normal file
View File

@ -0,0 +1,105 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "pitch_gain_tables.h"
#include "settings.h"
/* header file for coding tables for the pitch filter side-info in the entropy coder */
/********************* Pitch Filter Gain Coefficient Tables ************************/
/* cdf for quantized pitch filter gains */
const uint16_t WebRtcIsac_kQPitchGainCdf[255] = {
0, 2, 4, 6, 64, 901, 903, 905, 16954, 16956,
16961, 17360, 17362, 17364, 17366, 17368, 17370, 17372, 17374, 17411,
17514, 17516, 17583, 18790, 18796, 18802, 20760, 20777, 20782, 21722,
21724, 21728, 21738, 21740, 21742, 21744, 21746, 21748, 22224, 22227,
22230, 23214, 23229, 23239, 25086, 25108, 25120, 26088, 26094, 26098,
26175, 26177, 26179, 26181, 26183, 26185, 26484, 26507, 26522, 27705,
27731, 27750, 29767, 29799, 29817, 30866, 30883, 30885, 31025, 31029,
31031, 31033, 31035, 31037, 31114, 31126, 31134, 32687, 32722, 32767,
35718, 35742, 35757, 36943, 36952, 36954, 37115, 37128, 37130, 37132,
37134, 37136, 37143, 37145, 37152, 38843, 38863, 38897, 47458, 47467,
47474, 49040, 49061, 49063, 49145, 49157, 49159, 49161, 49163, 49165,
49167, 49169, 49171, 49757, 49770, 49782, 61333, 61344, 61346, 62860,
62883, 62885, 62887, 62889, 62891, 62893, 62895, 62897, 62899, 62901,
62903, 62905, 62907, 62909, 65496, 65498, 65500, 65521, 65523, 65525,
65527, 65529, 65531, 65533, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535};
/* index limits and ranges */
const int16_t WebRtcIsac_kIndexLowerLimitGain[3] = {
-7, -2, -1};
const int16_t WebRtcIsac_kIndexUpperLimitGain[3] = {
0, 3, 1};
const uint16_t WebRtcIsac_kIndexMultsGain[2] = {
18, 3};
/* size of cdf table */
const uint16_t WebRtcIsac_kQCdfTableSizeGain[1] = {
256};
///////////////////////////FIXED POINT
/* mean values of pitch filter gains in FIXED point */
const int16_t WebRtcIsac_kQMeanGain1Q12[144] = {
843, 1092, 1336, 1222, 1405, 1656, 1500, 1815, 1843, 1838, 1839, 1843, 1843, 1843, 1843, 1843,
1843, 1843, 814, 846, 1092, 1013, 1174, 1383, 1391, 1511, 1584, 1734, 1753, 1843, 1843, 1843,
1843, 1843, 1843, 1843, 524, 689, 777, 845, 947, 1069, 1090, 1263, 1380, 1447, 1559, 1676,
1645, 1749, 1843, 1843, 1843, 1843, 81, 477, 563, 611, 706, 806, 849, 1012, 1192, 1128,
1330, 1489, 1425, 1576, 1826, 1741, 1843, 1843, 0, 290, 305, 356, 488, 575, 602, 741,
890, 835, 1079, 1196, 1182, 1376, 1519, 1506, 1680, 1843, 0, 47, 97, 69, 289, 381,
385, 474, 617, 664, 803, 1079, 935, 1160, 1269, 1265, 1506, 1741, 0, 0, 0, 0,
112, 120, 190, 283, 442, 343, 526, 809, 684, 935, 1134, 1020, 1265, 1506, 0, 0,
0, 0, 0, 0, 0, 111, 256, 87, 373, 597, 430, 684, 935, 770, 1020, 1265};
const int16_t WebRtcIsac_kQMeanGain2Q12[144] = {
1760, 1525, 1285, 1747, 1671, 1393, 1843, 1826, 1555, 1843, 1784, 1606, 1843, 1843, 1711, 1843,
1843, 1814, 1389, 1275, 1040, 1564, 1414, 1252, 1610, 1495, 1343, 1753, 1592, 1405, 1804, 1720,
1475, 1843, 1814, 1581, 1208, 1061, 856, 1349, 1148, 994, 1390, 1253, 1111, 1495, 1343, 1178,
1770, 1465, 1234, 1814, 1581, 1342, 1040, 793, 713, 1053, 895, 737, 1128, 1003, 861, 1277,
1094, 981, 1475, 1192, 1019, 1581, 1342, 1098, 855, 570, 483, 833, 648, 540, 948, 744,
572, 1009, 844, 636, 1234, 934, 685, 1342, 1217, 984, 537, 318, 124, 603, 423, 350,
687, 479, 322, 791, 581, 430, 987, 671, 488, 1098, 849, 597, 283, 27, 0, 397,
222, 38, 513, 271, 124, 624, 325, 157, 737, 484, 233, 849, 597, 343, 27, 0,
0, 141, 0, 0, 256, 69, 0, 370, 87, 0, 484, 229, 0, 597, 343, 87};
const int16_t WebRtcIsac_kQMeanGain3Q12[144] = {
1843, 1843, 1711, 1843, 1818, 1606, 1843, 1827, 1511, 1814, 1639, 1393, 1760, 1525, 1285, 1656,
1419, 1176, 1835, 1718, 1475, 1841, 1650, 1387, 1648, 1498, 1287, 1600, 1411, 1176, 1522, 1299,
1040, 1419, 1176, 928, 1773, 1461, 1128, 1532, 1355, 1202, 1429, 1260, 1115, 1398, 1151, 1025,
1172, 1080, 790, 1176, 928, 677, 1475, 1147, 1019, 1276, 1096, 922, 1214, 1010, 901, 1057,
893, 800, 1040, 796, 734, 928, 677, 424, 1137, 897, 753, 1120, 830, 710, 875, 751,
601, 795, 642, 583, 790, 544, 475, 677, 474, 140, 987, 750, 482, 697, 573, 450,
691, 487, 303, 661, 394, 332, 537, 303, 220, 424, 168, 0, 737, 484, 229, 624,
348, 153, 441, 261, 136, 397, 166, 51, 283, 27, 0, 168, 0, 0, 484, 229,
0, 370, 57, 0, 256, 43, 0, 141, 0, 0, 27, 0, 0, 0, 0, 0};
const int16_t WebRtcIsac_kQMeanGain4Q12[144] = {
1843, 1843, 1843, 1843, 1841, 1843, 1500, 1821, 1843, 1222, 1434, 1656, 843, 1092, 1336, 504,
757, 1007, 1843, 1843, 1843, 1838, 1791, 1843, 1265, 1505, 1599, 965, 1219, 1425, 730, 821,
1092, 249, 504, 757, 1783, 1819, 1843, 1351, 1567, 1727, 1096, 1268, 1409, 805, 961, 1131,
444, 670, 843, 0, 249, 504, 1425, 1655, 1743, 1096, 1324, 1448, 822, 1019, 1199, 490,
704, 867, 81, 450, 555, 0, 0, 249, 1247, 1428, 1530, 881, 1073, 1283, 610, 759,
939, 278, 464, 645, 0, 200, 270, 0, 0, 0, 935, 1163, 1410, 528, 790, 1068,
377, 499, 717, 173, 240, 274, 0, 43, 62, 0, 0, 0, 684, 935, 1182, 343,
551, 735, 161, 262, 423, 0, 55, 27, 0, 0, 0, 0, 0, 0, 430, 684,
935, 87, 377, 597, 0, 46, 256, 0, 0, 0, 0, 0, 0, 0, 0, 0};

45
webrtc/modules/audio_coding/codecs/isac/main/source/pitch_gain_tables.h Normal file
View File

@ -0,0 +1,45 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* pitch_gain_tables.h
*
* This file contains tables for the pitch filter side-info in the entropy coder.
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_GAIN_TABLES_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_GAIN_TABLES_H_
#include "webrtc/typedefs.h"
/* header file for coding tables for the pitch filter side-info in the entropy coder */
/********************* Pitch Filter Gain Coefficient Tables ************************/
/* cdf for quantized pitch filter gains */
extern const uint16_t WebRtcIsac_kQPitchGainCdf[255];
/* index limits and ranges */
extern const int16_t WebRtcIsac_kIndexLowerLimitGain[3];
extern const int16_t WebRtcIsac_kIndexUpperLimitGain[3];
extern const uint16_t WebRtcIsac_kIndexMultsGain[2];
/* mean values of pitch filter gains */
//(Y)
extern const int16_t WebRtcIsac_kQMeanGain1Q12[144];
extern const int16_t WebRtcIsac_kQMeanGain2Q12[144];
extern const int16_t WebRtcIsac_kQMeanGain3Q12[144];
extern const int16_t WebRtcIsac_kQMeanGain4Q12[144];
//(Y)
/* size of cdf table */
extern const uint16_t WebRtcIsac_kQCdfTableSizeGain[1];
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_GAIN_TABLES_H_ */

277
webrtc/modules/audio_coding/codecs/isac/main/source/pitch_lag_tables.c Normal file
View File

@ -0,0 +1,277 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "pitch_lag_tables.h"
#include "settings.h"
/* header file for coding tables for the pitch filter side-info in the entropy coder */
/********************* Pitch Filter Gain Coefficient Tables ************************/
/* tables for use with small pitch gain */
/* cdf for quantized pitch filter lags */
const uint16_t WebRtcIsac_kQPitchLagCdf1Lo[127] = {
0, 134, 336, 549, 778, 998, 1264, 1512, 1777, 2070,
2423, 2794, 3051, 3361, 3708, 3979, 4315, 4610, 4933, 5269,
5575, 5896, 6155, 6480, 6816, 7129, 7477, 7764, 8061, 8358,
8718, 9020, 9390, 9783, 10177, 10543, 10885, 11342, 11795, 12213,
12680, 13096, 13524, 13919, 14436, 14903, 15349, 15795, 16267, 16734,
17266, 17697, 18130, 18632, 19080, 19447, 19884, 20315, 20735, 21288,
21764, 22264, 22723, 23193, 23680, 24111, 24557, 25022, 25537, 26082,
26543, 27090, 27620, 28139, 28652, 29149, 29634, 30175, 30692, 31273,
31866, 32506, 33059, 33650, 34296, 34955, 35629, 36295, 36967, 37726,
38559, 39458, 40364, 41293, 42256, 43215, 44231, 45253, 46274, 47359,
48482, 49678, 50810, 51853, 53016, 54148, 55235, 56263, 57282, 58363,
59288, 60179, 61076, 61806, 62474, 63129, 63656, 64160, 64533, 64856,
65152, 65535, 65535, 65535, 65535, 65535, 65535};
const uint16_t WebRtcIsac_kQPitchLagCdf2Lo[20] = {
0, 429, 3558, 5861, 8558, 11639, 15210, 19502, 24773, 31983,
42602, 48567, 52601, 55676, 58160, 60172, 61889, 63235, 65383, 65535};
const uint16_t WebRtcIsac_kQPitchLagCdf3Lo[2] = {
0, 65535};
const uint16_t WebRtcIsac_kQPitchLagCdf4Lo[10] = {
0, 2966, 6368, 11182, 19431, 37793, 48532, 55353, 60626, 65535};
const uint16_t *WebRtcIsac_kQPitchLagCdfPtrLo[4] = {WebRtcIsac_kQPitchLagCdf1Lo, WebRtcIsac_kQPitchLagCdf2Lo, WebRtcIsac_kQPitchLagCdf3Lo, WebRtcIsac_kQPitchLagCdf4Lo};
/* size of first cdf table */
const uint16_t WebRtcIsac_kQPitchLagCdfSizeLo[1] = {128};
/* index limits and ranges */
const int16_t WebRtcIsac_kQIndexLowerLimitLagLo[4] = {
-140, -9, 0, -4};
const int16_t WebRtcIsac_kQIndexUpperLimitLagLo[4] = {
-20, 9, 0, 4};
/* initial index for arithmetic decoder */
const uint16_t WebRtcIsac_kQInitIndexLagLo[3] = {
10, 1, 5};
/* mean values of pitch filter lags */
const double WebRtcIsac_kQMeanLag2Lo[19] = {
-17.21385070, -15.82678944, -14.07123081, -12.03003877, -10.01311864, -8.00794627, -5.91162987, -3.89231876, -1.90220980, -0.01879275,
1.89144232, 3.88123171, 5.92146992, 7.96435361, 9.98923648, 11.98266347, 13.96101002, 15.74855713, 17.10976611};
const double WebRtcIsac_kQMeanLag3Lo[1] = {
0.00000000};
const double WebRtcIsac_kQMeanLag4Lo[9] = {
-7.76246496, -5.92083980, -3.94095226, -1.89502305, 0.03724681, 1.93054221, 3.96443467, 5.91726366, 7.78434291};
const double WebRtcIsac_kQPitchLagStepsizeLo = 2.000000;
/* tables for use with medium pitch gain */
/* cdf for quantized pitch filter lags */
const uint16_t WebRtcIsac_kQPitchLagCdf1Mid[255] = {
0, 28, 61, 88, 121, 149, 233, 331, 475, 559,
624, 661, 689, 712, 745, 791, 815, 843, 866, 922,
959, 1024, 1061, 1117, 1178, 1238, 1280, 1350, 1453, 1513,
1564, 1625, 1671, 1741, 1788, 1904, 2072, 2421, 2626, 2770,
2840, 2900, 2942, 3012, 3068, 3115, 3147, 3194, 3254, 3319,
3366, 3520, 3678, 3780, 3850, 3911, 3957, 4032, 4106, 4185,
4292, 4474, 4683, 4842, 5019, 5191, 5321, 5428, 5540, 5675,
5763, 5847, 5959, 6127, 6304, 6564, 6839, 7090, 7263, 7421,
7556, 7728, 7872, 7984, 8142, 8361, 8580, 8743, 8938, 9227,
9409, 9539, 9674, 9795, 9930, 10060, 10177, 10382, 10614, 10861,
11038, 11271, 11415, 11629, 11792, 12044, 12193, 12416, 12574, 12821,
13007, 13235, 13445, 13654, 13901, 14134, 14488, 15000, 15703, 16285,
16504, 16797, 17086, 17328, 17579, 17807, 17998, 18268, 18538, 18836,
19087, 19274, 19474, 19716, 19935, 20270, 20833, 21303, 21532, 21741,
21978, 22207, 22523, 22770, 23054, 23613, 23943, 24204, 24399, 24651,
24832, 25074, 25270, 25549, 25759, 26015, 26150, 26424, 26713, 27048,
27342, 27504, 27681, 27854, 28021, 28207, 28412, 28664, 28859, 29064,
29278, 29548, 29748, 30107, 30377, 30656, 30856, 31164, 31452, 31755,
32011, 32328, 32626, 32919, 33319, 33789, 34329, 34925, 35396, 35973,
36443, 36964, 37551, 38156, 38724, 39357, 40023, 40908, 41587, 42602,
43924, 45037, 45810, 46597, 47421, 48291, 49092, 50051, 51448, 52719,
53440, 54241, 54944, 55977, 56676, 57299, 57872, 58389, 59059, 59688,
60237, 60782, 61094, 61573, 61890, 62290, 62658, 63030, 63217, 63454,
63622, 63882, 64003, 64273, 64427, 64529, 64581, 64697, 64758, 64902,
65414, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535};
const uint16_t WebRtcIsac_kQPitchLagCdf2Mid[36] = {
0, 71, 335, 581, 836, 1039, 1323, 1795, 2258, 2608,
3005, 3591, 4243, 5344, 7163, 10583, 16848, 28078, 49448, 57007,
60357, 61850, 62837, 63437, 63872, 64188, 64377, 64614, 64774, 64949,
65039, 65115, 65223, 65360, 65474, 65535};
const uint16_t WebRtcIsac_kQPitchLagCdf3Mid[2] = {
0, 65535};
const uint16_t WebRtcIsac_kQPitchLagCdf4Mid[20] = {
0, 28, 246, 459, 667, 1045, 1523, 2337, 4337, 11347,
44231, 56709, 60781, 62243, 63161, 63969, 64608, 65062, 65502, 65535};
const uint16_t *WebRtcIsac_kQPitchLagCdfPtrMid[4] = {WebRtcIsac_kQPitchLagCdf1Mid, WebRtcIsac_kQPitchLagCdf2Mid, WebRtcIsac_kQPitchLagCdf3Mid, WebRtcIsac_kQPitchLagCdf4Mid};
/* size of first cdf table */
const uint16_t WebRtcIsac_kQPitchLagCdfSizeMid[1] = {256};
/* index limits and ranges */
const int16_t WebRtcIsac_kQIndexLowerLimitLagMid[4] = {
-280, -17, 0, -9};
const int16_t WebRtcIsac_kQIndexUpperLimitLagMid[4] = {
-40, 17, 0, 9};
/* initial index for arithmetic decoder */
const uint16_t WebRtcIsac_kQInitIndexLagMid[3] = {
18, 1, 10};
/* mean values of pitch filter lags */
const double WebRtcIsac_kQMeanLag2Mid[35] = {
-16.89183900, -15.86949778, -15.05476653, -14.00664348, -13.02793036, -12.07324237, -11.00542532, -10.11250602, -8.90792971, -8.02474753,
-7.00426767, -5.94055287, -4.98251338, -3.91053158, -2.98820425, -1.93524245, -0.92978085, -0.01722509, 0.91317387, 1.92973955,
2.96908851, 3.93728974, 4.96308471, 5.92244151, 7.08673497, 8.00993708, 9.04656316, 9.98538742, 10.97851694, 11.94772884,
13.02426166, 14.00039951, 15.01347042, 15.80758023, 16.94086895};
const double WebRtcIsac_kQMeanLag3Mid[1] = {
0.00000000};
const double WebRtcIsac_kQMeanLag4Mid[19] = {
-8.60409403, -7.89198395, -7.03450280, -5.86260421, -4.93822322, -3.93078706, -2.91302322, -1.91824007, -0.87003282, 0.02822649,
0.89951758, 1.87495484, 2.91802604, 3.96874074, 5.06571703, 5.93618227, 7.00520185, 7.88497726, 8.64160364};
const double WebRtcIsac_kQPitchLagStepsizeMid = 1.000000;
/* tables for use with large pitch gain */
/* cdf for quantized pitch filter lags */
const uint16_t WebRtcIsac_kQPitchLagCdf1Hi[511] = {
0, 7, 18, 33, 69, 105, 156, 228, 315, 612,
680, 691, 709, 724, 735, 738, 742, 746, 749, 753,
756, 760, 764, 774, 782, 785, 789, 796, 800, 803,
807, 814, 818, 822, 829, 832, 847, 854, 858, 869,
876, 883, 898, 908, 934, 977, 1010, 1050, 1060, 1064,
1075, 1078, 1086, 1089, 1093, 1104, 1111, 1122, 1133, 1136,
1151, 1162, 1183, 1209, 1252, 1281, 1339, 1364, 1386, 1401,
1411, 1415, 1426, 1430, 1433, 1440, 1448, 1455, 1462, 1477,
1487, 1495, 1502, 1506, 1509, 1516, 1524, 1531, 1535, 1542,
1553, 1556, 1578, 1589, 1611, 1625, 1639, 1643, 1654, 1665,
1672, 1687, 1694, 1705, 1708, 1719, 1730, 1744, 1752, 1759,
1791, 1795, 1820, 1867, 1886, 1915, 1936, 1943, 1965, 1987,
2041, 2099, 2161, 2175, 2200, 2211, 2226, 2233, 2244, 2251,
2266, 2280, 2287, 2298, 2309, 2316, 2331, 2342, 2356, 2378,
2403, 2418, 2447, 2497, 2544, 2602, 2863, 2895, 2903, 2935,
2950, 2971, 3004, 3011, 3018, 3029, 3040, 3062, 3087, 3127,
3152, 3170, 3199, 3243, 3293, 3322, 3340, 3377, 3402, 3427,
3474, 3518, 3543, 3579, 3601, 3637, 3659, 3706, 3731, 3760,
3818, 3847, 3869, 3901, 3920, 3952, 4068, 4169, 4220, 4271,
4524, 4571, 4604, 4632, 4672, 4730, 4777, 4806, 4857, 4904,
4951, 5002, 5031, 5060, 5107, 5150, 5212, 5266, 5331, 5382,
5432, 5490, 5544, 5610, 5700, 5762, 5812, 5874, 5972, 6022,
6091, 6163, 6232, 6305, 6402, 6540, 6685, 6880, 7090, 7271,
7379, 7452, 7542, 7625, 7687, 7770, 7843, 7911, 7966, 8024,
8096, 8190, 8252, 8320, 8411, 8501, 8585, 8639, 8751, 8842,
8918, 8986, 9066, 9127, 9203, 9269, 9345, 9406, 9464, 9536,
9612, 9667, 9735, 9844, 9931, 10036, 10119, 10199, 10260, 10358,
10441, 10514, 10666, 10734, 10872, 10951, 11053, 11125, 11223, 11324,
11516, 11664, 11737, 11816, 11892, 12008, 12120, 12200, 12280, 12392,
12490, 12576, 12685, 12812, 12917, 13003, 13108, 13210, 13300, 13384,
13470, 13579, 13673, 13771, 13879, 13999, 14136, 14201, 14368, 14614,
14759, 14867, 14958, 15030, 15121, 15189, 15280, 15385, 15461, 15555,
15653, 15768, 15884, 15971, 16069, 16145, 16210, 16279, 16380, 16463,
16539, 16615, 16688, 16818, 16919, 17017, 18041, 18338, 18523, 18649,
18790, 18917, 19047, 19167, 19315, 19460, 19601, 19731, 19858, 20068,
20173, 20318, 20466, 20625, 20741, 20911, 21045, 21201, 21396, 21588,
21816, 22022, 22305, 22547, 22786, 23072, 23322, 23600, 23879, 24168,
24433, 24769, 25120, 25511, 25895, 26289, 26792, 27219, 27683, 28077,
28566, 29094, 29546, 29977, 30491, 30991, 31573, 32105, 32594, 33173,
33788, 34497, 35181, 35833, 36488, 37255, 37921, 38645, 39275, 39894,
40505, 41167, 41790, 42431, 43096, 43723, 44385, 45134, 45858, 46607,
47349, 48091, 48768, 49405, 49955, 50555, 51167, 51985, 52611, 53078,
53494, 53965, 54435, 54996, 55601, 56125, 56563, 56838, 57244, 57566,
57967, 58297, 58771, 59093, 59419, 59647, 59886, 60143, 60461, 60693,
60917, 61170, 61416, 61634, 61891, 62122, 62310, 62455, 62632, 62839,
63103, 63436, 63639, 63805, 63906, 64015, 64192, 64355, 64475, 64558,
64663, 64742, 64811, 64865, 64916, 64956, 64981, 65025, 65068, 65115,
65195, 65314, 65419, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535,
65535};
const uint16_t WebRtcIsac_kQPitchLagCdf2Hi[68] = {
0, 7, 11, 22, 37, 52, 56, 59, 81, 85,
89, 96, 115, 130, 137, 152, 170, 181, 193, 200,
207, 233, 237, 259, 289, 318, 363, 433, 592, 992,
1607, 3062, 6149, 12206, 25522, 48368, 58223, 61918, 63640, 64584,
64943, 65098, 65206, 65268, 65294, 65335, 65350, 65372, 65387, 65402,
65413, 65420, 65428, 65435, 65439, 65450, 65454, 65468, 65472, 65476,
65483, 65491, 65498, 65505, 65516, 65520, 65528, 65535};
const uint16_t WebRtcIsac_kQPitchLagCdf3Hi[2] = {
0, 65535};
const uint16_t WebRtcIsac_kQPitchLagCdf4Hi[35] = {
0, 7, 19, 30, 41, 48, 63, 74, 82, 96,
122, 152, 215, 330, 701, 2611, 10931, 48106, 61177, 64341,
65112, 65238, 65309, 65338, 65364, 65379, 65401, 65427, 65453, 65465,
65476, 65490, 65509, 65528, 65535};
const uint16_t *WebRtcIsac_kQPitchLagCdfPtrHi[4] = {WebRtcIsac_kQPitchLagCdf1Hi, WebRtcIsac_kQPitchLagCdf2Hi, WebRtcIsac_kQPitchLagCdf3Hi, WebRtcIsac_kQPitchLagCdf4Hi};
/* size of first cdf table */
const uint16_t WebRtcIsac_kQPitchLagCdfSizeHi[1] = {512};
/* index limits and ranges */
const int16_t WebRtcIsac_kQindexLowerLimitLagHi[4] = {
-552, -34, 0, -16};
const int16_t WebRtcIsac_kQindexUpperLimitLagHi[4] = {
-80, 32, 0, 17};
/* initial index for arithmetic decoder */
const uint16_t WebRtcIsac_kQInitIndexLagHi[3] = {
34, 1, 18};
/* mean values of pitch filter lags */
const double WebRtcIsac_kQMeanLag2Hi[67] = {
-17.07263295, -16.50000000, -15.83966081, -15.55613708, -14.96948007, -14.50000000, -14.00000000, -13.48377986, -13.00000000, -12.50000000,
-11.93199636, -11.44530414, -11.04197641, -10.39910301, -10.15202337, -9.51322461, -8.93357741, -8.46456632, -8.10270672, -7.53751847,
-6.98686404, -6.50000000, -6.08463150, -5.46872991, -5.00864717, -4.50163760, -4.01382410, -3.43856708, -2.96898001, -2.46554810,
-1.96861004, -1.47106701, -0.97197237, -0.46561654, -0.00531409, 0.45767857, 0.96777907, 1.47507903, 1.97740425, 2.46695420,
3.00695774, 3.47167185, 4.02712538, 4.49280007, 5.01087640, 5.48191963, 6.04916550, 6.51511058, 6.97297819, 7.46565499,
8.01489405, 8.39912001, 8.91819757, 9.50000000, 10.11654065, 10.50000000, 11.03712583, 11.50000000, 12.00000000, 12.38964346,
12.89466127, 13.43657881, 13.96013840, 14.46279912, 15.00000000, 15.39412269, 15.96662441};
const double WebRtcIsac_kQMeanLag3Hi[1] = {
0.00000000};
const double WebRtcIsac_kQMeanLag4Hi[34] = {
-7.98331221, -7.47988769, -7.03626557, -6.52708003, -6.06982173, -5.51856292, -5.05827033, -4.45909878, -3.99125864, -3.45308135,
-3.02328139, -2.47297273, -1.94341995, -1.44699056, -0.93612243, -0.43012406, 0.01120357, 0.44054812, 0.93199883, 1.45669587,
1.97218322, 2.50187419, 2.98748690, 3.49343202, 4.01660147, 4.50984306, 5.01402683, 5.58936797, 5.91787793, 6.59998900,
6.85034315, 7.53503316, 7.87711194, 8.53631648};
const double WebRtcIsac_kQPitchLagStepsizeHi = 0.500000;
/* transform matrix */
const double WebRtcIsac_kTransform[4][4] = {
{-0.50000000, -0.50000000, -0.50000000, -0.50000000},
{ 0.67082039, 0.22360680, -0.22360680, -0.67082039},
{ 0.50000000, -0.50000000, -0.50000000, 0.50000000},
{ 0.22360680, -0.67082039, 0.67082039, -0.22360680}};
/* transpose transform matrix */
const double WebRtcIsac_kTransformTranspose[4][4] = {
{-0.50000000, 0.67082039, 0.50000000, 0.22360680},
{-0.50000000, 0.22360680, -0.50000000, -0.67082039},
{-0.50000000, -0.22360680, -0.50000000, 0.67082039},
{-0.50000000, -0.67082039, 0.50000000, -0.22360680}};

114
webrtc/modules/audio_coding/codecs/isac/main/source/pitch_lag_tables.h Normal file
View File

@ -0,0 +1,114 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* pitch_lag_tables.h
*
* This file contains tables for the pitch filter side-info in the entropy coder.
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_
#include "webrtc/typedefs.h"
/* header file for coding tables for the pitch filter side-info in the entropy coder */
/********************* Pitch Filter Lag Coefficient Tables ************************/
/* tables for use with small pitch gain */
/* cdfs for quantized pitch lags */
extern const uint16_t WebRtcIsac_kQPitchLagCdf1Lo[127];
extern const uint16_t WebRtcIsac_kQPitchLagCdf2Lo[20];
extern const uint16_t WebRtcIsac_kQPitchLagCdf3Lo[2];
extern const uint16_t WebRtcIsac_kQPitchLagCdf4Lo[10];
extern const uint16_t *WebRtcIsac_kQPitchLagCdfPtrLo[4];
/* size of first cdf table */
extern const uint16_t WebRtcIsac_kQPitchLagCdfSizeLo[1];
/* index limits and ranges */
extern const int16_t WebRtcIsac_kQIndexLowerLimitLagLo[4];
extern const int16_t WebRtcIsac_kQIndexUpperLimitLagLo[4];
/* initial index for arithmetic decoder */
extern const uint16_t WebRtcIsac_kQInitIndexLagLo[3];
/* mean values of pitch filter lags */
extern const double WebRtcIsac_kQMeanLag2Lo[19];
extern const double WebRtcIsac_kQMeanLag3Lo[1];
extern const double WebRtcIsac_kQMeanLag4Lo[9];
extern const double WebRtcIsac_kQPitchLagStepsizeLo;
/* tables for use with medium pitch gain */
/* cdfs for quantized pitch lags */
extern const uint16_t WebRtcIsac_kQPitchLagCdf1Mid[255];
extern const uint16_t WebRtcIsac_kQPitchLagCdf2Mid[36];
extern const uint16_t WebRtcIsac_kQPitchLagCdf3Mid[2];
extern const uint16_t WebRtcIsac_kQPitchLagCdf4Mid[20];
extern const uint16_t *WebRtcIsac_kQPitchLagCdfPtrMid[4];
/* size of first cdf table */
extern const uint16_t WebRtcIsac_kQPitchLagCdfSizeMid[1];
/* index limits and ranges */
extern const int16_t WebRtcIsac_kQIndexLowerLimitLagMid[4];
extern const int16_t WebRtcIsac_kQIndexUpperLimitLagMid[4];
/* initial index for arithmetic decoder */
extern const uint16_t WebRtcIsac_kQInitIndexLagMid[3];
/* mean values of pitch filter lags */
extern const double WebRtcIsac_kQMeanLag2Mid[35];
extern const double WebRtcIsac_kQMeanLag3Mid[1];
extern const double WebRtcIsac_kQMeanLag4Mid[19];
extern const double WebRtcIsac_kQPitchLagStepsizeMid;
/* tables for use with large pitch gain */
/* cdfs for quantized pitch lags */
extern const uint16_t WebRtcIsac_kQPitchLagCdf1Hi[511];
extern const uint16_t WebRtcIsac_kQPitchLagCdf2Hi[68];
extern const uint16_t WebRtcIsac_kQPitchLagCdf3Hi[2];
extern const uint16_t WebRtcIsac_kQPitchLagCdf4Hi[35];
extern const uint16_t *WebRtcIsac_kQPitchLagCdfPtrHi[4];
/* size of first cdf table */
extern const uint16_t WebRtcIsac_kQPitchLagCdfSizeHi[1];
/* index limits and ranges */
extern const int16_t WebRtcIsac_kQindexLowerLimitLagHi[4];
extern const int16_t WebRtcIsac_kQindexUpperLimitLagHi[4];
/* initial index for arithmetic decoder */
extern const uint16_t WebRtcIsac_kQInitIndexLagHi[3];
/* mean values of pitch filter lags */
extern const double WebRtcIsac_kQMeanLag2Hi[67];
extern const double WebRtcIsac_kQMeanLag3Hi[1];
extern const double WebRtcIsac_kQMeanLag4Hi[34];
extern const double WebRtcIsac_kQPitchLagStepsizeHi;
/* transform matrix */
extern const double WebRtcIsac_kTransform[4][4];
/* transpose transform matrix */
extern const double WebRtcIsac_kTransformTranspose[4][4];
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_ */

207
webrtc/modules/audio_coding/codecs/isac/main/source/settings.h Normal file
View File

@ -0,0 +1,207 @@
/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* settings.h
*
* Declaration of #defines used in the iSAC codec
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SETTINGS_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SETTINGS_H_
/* sampling frequency (Hz) */
#define FS 16000
/* number of samples per frame (either 320 (20ms), 480 (30ms) or 960 (60ms)) */
#define INITIAL_FRAMESAMPLES 960
#define MAXFFTSIZE 2048
#define NFACTOR 11
/* do not modify the following; this will have to be modified if we
* have a 20ms framesize option */
/**********************************************************************/
/* miliseconds */
#define FRAMESIZE 30
/* number of samples per frame processed in the encoder, 480 */
#define FRAMESAMPLES 480 /* ((FRAMESIZE*FS)/1000) */
#define FRAMESAMPLES_HALF 240
#define FRAMESAMPLES_QUARTER 120
/**********************************************************************/
/* max number of samples per frame (= 60 ms frame) */
#define MAX_FRAMESAMPLES 960
#define MAX_SWBFRAMESAMPLES (MAX_FRAMESAMPLES * 2)
/* number of samples per 10ms frame */
#define FRAMESAMPLES_10ms ((10*FS)/1000)
#define SWBFRAMESAMPLES_10ms (FRAMESAMPLES_10ms * 2)
/* number of samples in 30 ms frame */
#define FRAMESAMPLES_30ms 480
/* number of subframes */
#define SUBFRAMES 6
/* length of a subframe */
#define UPDATE 80
/* length of half a subframe (low/high band) */
#define HALF_SUBFRAMELEN (UPDATE/2)
/* samples of look ahead (in a half-band, so actually
* half the samples of look ahead @ FS) */
#define QLOOKAHEAD 24 /* 3 ms */
/* order of AR model in spectral entropy coder */
#define AR_ORDER 6
/* order of LP model in spectral entropy coder */
#define LP_ORDER 0
/* window length (masking analysis) */
#define WINLEN 256
/* order of low-band pole filter used to approximate masking curve */
#define ORDERLO 12
/* order of hi-band pole filter used to approximate masking curve */
#define ORDERHI 6
#define UB_LPC_ORDER 4
#define UB_LPC_VEC_PER_FRAME 2
#define UB16_LPC_VEC_PER_FRAME 4
#define UB_ACTIVE_SUBFRAMES 2
#define UB_MAX_LPC_ORDER 6
#define UB_INTERPOL_SEGMENTS 1
#define UB16_INTERPOL_SEGMENTS 3
#define LB_TOTAL_DELAY_SAMPLES 48
enum ISACBandwidth {isac8kHz = 8, isac12kHz = 12, isac16kHz = 16};
enum ISACBand {kIsacLowerBand = 0, kIsacUpperBand12 = 1, kIsacUpperBand16 = 2};
enum IsacSamplingRate {kIsacWideband = 16, kIsacSuperWideband = 32};
#define UB_LPC_GAIN_DIM SUBFRAMES
#define FB_STATE_SIZE_WORD32 6
/* order for post_filter_bank */
#define POSTQORDER 3
/* order for pre-filterbank */
#define QORDER 3
/* another order */
#define QORDER_ALL (POSTQORDER+QORDER-1)
/* for decimator */
#define ALLPASSSECTIONS 2
/* array size for byte stream in number of bytes. */
/* The old maximum size still needed for the decoding */
#define STREAM_SIZE_MAX 600
#define STREAM_SIZE_MAX_30 200 /* 200 bytes=53.4 kbps @ 30 ms.framelength */
#define STREAM_SIZE_MAX_60 400 /* 400 bytes=53.4 kbps @ 60 ms.framelength */
/* storage size for bit counts */
#define BIT_COUNTER_SIZE 30
/* maximum order of any AR model or filter */
#define MAX_AR_MODEL_ORDER 12//50
/* For pitch analysis */
#define PITCH_FRAME_LEN (FRAMESAMPLES_HALF) /* 30 ms */
#define PITCH_MAX_LAG 140 /* 57 Hz */
#define PITCH_MIN_LAG 20 /* 400 Hz */
#define PITCH_MAX_GAIN 0.45
#define PITCH_MAX_GAIN_06 0.27 /* PITCH_MAX_GAIN*0.6 */
#define PITCH_MAX_GAIN_Q12 1843
#define PITCH_LAG_SPAN2 (PITCH_MAX_LAG/2-PITCH_MIN_LAG/2+5)
#define PITCH_CORR_LEN2 60 /* 15 ms */
#define PITCH_CORR_STEP2 (PITCH_FRAME_LEN/4)
#define PITCH_BW 11 /* half the band width of correlation surface */
#define PITCH_SUBFRAMES 4
#define PITCH_GRAN_PER_SUBFRAME 5
#define PITCH_SUBFRAME_LEN (PITCH_FRAME_LEN/PITCH_SUBFRAMES)
#define PITCH_UPDATE (PITCH_SUBFRAME_LEN/PITCH_GRAN_PER_SUBFRAME)
/* maximum number of peaks to be examined in correlation surface */
#define PITCH_MAX_NUM_PEAKS 10
#define PITCH_PEAK_DECAY 0.85
/* For weighting filter */
#define PITCH_WLPCORDER 6
#define PITCH_WLPCWINLEN PITCH_FRAME_LEN
#define PITCH_WLPCASYM 0.3 /* asymmetry parameter */
#define PITCH_WLPCBUFLEN PITCH_WLPCWINLEN
/* For pitch filter */
/* Extra 50 for fraction and LP filters */
#define PITCH_BUFFSIZE (PITCH_MAX_LAG + 50)
#define PITCH_INTBUFFSIZE (PITCH_FRAME_LEN+PITCH_BUFFSIZE)
/* Max rel. step for interpolation */
#define PITCH_UPSTEP 1.5
/* Max rel. step for interpolation */
#define PITCH_DOWNSTEP 0.67
#define PITCH_FRACS 8
#define PITCH_FRACORDER 9
#define PITCH_DAMPORDER 5
#define PITCH_FILTDELAY 1.5f
/* stepsize for quantization of the pitch Gain */
#define PITCH_GAIN_STEPSIZE 0.125
/* Order of high pass filter */
#define HPORDER 2
/* some mathematical constants */
/* log2(exp) */
#define LOG2EXP 1.44269504088896
#define PI 3.14159265358979
/* Maximum number of iterations allowed to limit payload size */
#define MAX_PAYLOAD_LIMIT_ITERATION 5
/* Redundant Coding */
#define RCU_BOTTLENECK_BPS 16000
#define RCU_TRANSCODING_SCALE 0.40f
#define RCU_TRANSCODING_SCALE_INVERSE 2.5f
#define RCU_TRANSCODING_SCALE_UB 0.50f
#define RCU_TRANSCODING_SCALE_UB_INVERSE 2.0f
#define SIZE_RESAMPLER_STATE 6
/* Define Error codes */
/* 6000 General */
#define ISAC_MEMORY_ALLOCATION_FAILED 6010
#define ISAC_MODE_MISMATCH 6020
#define ISAC_DISALLOWED_BOTTLENECK 6030
#define ISAC_DISALLOWED_FRAME_LENGTH 6040
#define ISAC_UNSUPPORTED_SAMPLING_FREQUENCY 6050
/* 6200 Bandwidth estimator */
#define ISAC_RANGE_ERROR_BW_ESTIMATOR 6240
/* 6400 Encoder */
#define ISAC_ENCODER_NOT_INITIATED 6410
#define ISAC_DISALLOWED_CODING_MODE 6420
#define ISAC_DISALLOWED_FRAME_MODE_ENCODER 6430
#define ISAC_DISALLOWED_BITSTREAM_LENGTH 6440
#define ISAC_PAYLOAD_LARGER_THAN_LIMIT 6450
#define ISAC_DISALLOWED_ENCODER_BANDWIDTH 6460
/* 6600 Decoder */
#define ISAC_DECODER_NOT_INITIATED 6610
#define ISAC_EMPTY_PACKET 6620
#define ISAC_DISALLOWED_FRAME_MODE_DECODER 6630
#define ISAC_RANGE_ERROR_DECODE_FRAME_LENGTH 6640
#define ISAC_RANGE_ERROR_DECODE_BANDWIDTH 6650
#define ISAC_RANGE_ERROR_DECODE_PITCH_GAIN 6660
#define ISAC_RANGE_ERROR_DECODE_PITCH_LAG 6670
#define ISAC_RANGE_ERROR_DECODE_LPC 6680
#define ISAC_RANGE_ERROR_DECODE_SPECTRUM 6690
#define ISAC_LENGTH_MISMATCH 6730
#define ISAC_RANGE_ERROR_DECODE_BANDWITH 6740
#define ISAC_DISALLOWED_BANDWIDTH_MODE_DECODER 6750
#define ISAC_DISALLOWED_LPC_MODEL 6760
/* 6800 Call setup formats */
#define ISAC_INCOMPATIBLE_FORMATS 6810
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SETTINGS_H_ */

139
webrtc/modules/audio_coding/codecs/isac/main/source/spectrum_ar_model_tables.c Normal file
View File

@ -0,0 +1,139 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "spectrum_ar_model_tables.h"
#include "settings.h"
/********************* AR Coefficient Tables ************************/
/* cdf for quantized reflection coefficient 1 */
const uint16_t WebRtcIsac_kQArRc1Cdf[NUM_AR_RC_QUANT_BAUNDARY] = {
0, 2, 4, 129, 7707, 57485, 65495, 65527, 65529, 65531,
65533, 65535};
/* cdf for quantized reflection coefficient 2 */
const uint16_t WebRtcIsac_kQArRc2Cdf[NUM_AR_RC_QUANT_BAUNDARY] = {
0, 2, 4, 7, 531, 25298, 64525, 65526, 65529, 65531,
65533, 65535};
/* cdf for quantized reflection coefficient 3 */
const uint16_t WebRtcIsac_kQArRc3Cdf[NUM_AR_RC_QUANT_BAUNDARY] = {
0, 2, 4, 6, 620, 22898, 64843, 65527, 65529, 65531,
65533, 65535};
/* cdf for quantized reflection coefficient 4 */
const uint16_t WebRtcIsac_kQArRc4Cdf[NUM_AR_RC_QUANT_BAUNDARY] = {
0, 2, 4, 6, 35, 10034, 60733, 65506, 65529, 65531,
65533, 65535};
/* cdf for quantized reflection coefficient 5 */
const uint16_t WebRtcIsac_kQArRc5Cdf[NUM_AR_RC_QUANT_BAUNDARY] = {
0, 2, 4, 6, 36, 7567, 56727, 65385, 65529, 65531,
65533, 65535};
/* cdf for quantized reflection coefficient 6 */
const uint16_t WebRtcIsac_kQArRc6Cdf[NUM_AR_RC_QUANT_BAUNDARY] = {
0, 2, 4, 6, 14, 6579, 57360, 65409, 65529, 65531,
65533, 65535};
/* representation levels for quantized reflection coefficient 1 */
const int16_t WebRtcIsac_kQArRc1Levels[NUM_AR_RC_QUANT_BAUNDARY - 1] = {
-32104, -29007, -23202, -15496, -9279, -2577, 5934, 17535, 24512, 29503, 32104
};
/* representation levels for quantized reflection coefficient 2 */
const int16_t WebRtcIsac_kQArRc2Levels[NUM_AR_RC_QUANT_BAUNDARY - 1] = {
-32104, -29503, -23494, -15261, -7309, -1399, 6158, 16381, 24512, 29503, 32104
};
/* representation levels for quantized reflection coefficient 3 */
const int16_t WebRtcIsac_kQArRc3Levels[NUM_AR_RC_QUANT_BAUNDARY - 1] = {
-32104, -29503, -23157, -15186, -7347, -1359, 5829, 17535, 24512, 29503, 32104
};
/* representation levels for quantized reflection coefficient 4 */
const int16_t WebRtcIsac_kQArRc4Levels[NUM_AR_RC_QUANT_BAUNDARY - 1] = {
-32104, -29503, -24512, -15362, -6665, -342, 6596, 14585, 24512, 29503, 32104
};
/* representation levels for quantized reflection coefficient 5 */
const int16_t WebRtcIsac_kQArRc5Levels[NUM_AR_RC_QUANT_BAUNDARY - 1] = {
-32104, -29503, -24512, -15005, -6564, -106, 7123, 14920, 24512, 29503, 32104
};
/* representation levels for quantized reflection coefficient 6 */
const int16_t WebRtcIsac_kQArRc6Levels[NUM_AR_RC_QUANT_BAUNDARY - 1] = {
-32104, -29503, -24512, -15096, -6656, -37, 7036, 14847, 24512, 29503, 32104
};
/* quantization boundary levels for reflection coefficients */
const int16_t WebRtcIsac_kQArBoundaryLevels[NUM_AR_RC_QUANT_BAUNDARY] = {
-32768, -31441, -27566, -21458, -13612, -4663, 4663, 13612, 21458, 27566, 31441,
32767
};
/* initial index for AR reflection coefficient quantizer and cdf table search */
const uint16_t WebRtcIsac_kQArRcInitIndex[6] = {
5, 5, 5, 5, 5, 5};
/* pointers to AR cdf tables */
const uint16_t *WebRtcIsac_kQArRcCdfPtr[AR_ORDER] = {
WebRtcIsac_kQArRc1Cdf, WebRtcIsac_kQArRc2Cdf, WebRtcIsac_kQArRc3Cdf,
WebRtcIsac_kQArRc4Cdf, WebRtcIsac_kQArRc5Cdf, WebRtcIsac_kQArRc6Cdf
};
/* pointers to AR representation levels tables */
const int16_t *WebRtcIsac_kQArRcLevelsPtr[AR_ORDER] = {
WebRtcIsac_kQArRc1Levels, WebRtcIsac_kQArRc2Levels, WebRtcIsac_kQArRc3Levels,
WebRtcIsac_kQArRc4Levels, WebRtcIsac_kQArRc5Levels, WebRtcIsac_kQArRc6Levels
};
/******************** GAIN Coefficient Tables ***********************/
/* cdf for Gain coefficient */
const uint16_t WebRtcIsac_kQGainCdf[19] = {
0, 2, 4, 6, 8, 10, 12, 14, 16, 1172,
11119, 29411, 51699, 64445, 65527, 65529, 65531, 65533, 65535};
/* representation levels for quantized squared Gain coefficient */
const int32_t WebRtcIsac_kQGain2Levels[18] = {
// 17, 28, 46, 76, 128, 215, 364, 709, 1268, 1960, 3405, 6078, 11286, 17827, 51918, 134498, 487432, 2048000};
128, 128, 128, 128, 128, 215, 364, 709, 1268, 1960, 3405, 6078, 11286, 17827, 51918, 134498, 487432, 2048000};
/* quantization boundary levels for squared Gain coefficient */
const int32_t WebRtcIsac_kQGain2BoundaryLevels[19] = {
0, 21, 35, 59, 99, 166, 280, 475, 815, 1414, 2495, 4505, 8397, 16405, 34431, 81359, 240497, 921600, 0x7FFFFFFF};
/* pointers to Gain cdf table */
const uint16_t *WebRtcIsac_kQGainCdf_ptr[1] = {WebRtcIsac_kQGainCdf};
/* Gain initial index for gain quantizer and cdf table search */
const uint16_t WebRtcIsac_kQGainInitIndex[1] = {11};
/************************* Cosine Tables ****************************/
/* Cosine table */
const int16_t WebRtcIsac_kCos[6][60] = {
{512, 512, 511, 510, 508, 507, 505, 502, 499, 496, 493, 489, 485, 480, 476, 470, 465, 459, 453, 447,
440, 433, 426, 418, 410, 402, 394, 385, 376, 367, 357, 348, 338, 327, 317, 306, 295, 284, 273, 262,
250, 238, 226, 214, 202, 190, 177, 165, 152, 139, 126, 113, 100, 87, 73, 60, 47, 33, 20, 7},
{512, 510, 508, 503, 498, 491, 483, 473, 462, 450, 437, 422, 406, 389, 371, 352, 333, 312, 290, 268,
244, 220, 196, 171, 145, 120, 93, 67, 40, 13, -13, -40, -67, -93, -120, -145, -171, -196, -220, -244,
-268, -290, -312, -333, -352, -371, -389, -406, -422, -437, -450, -462, -473, -483, -491, -498, -503, -508, -510, -512},
{512, 508, 502, 493, 480, 465, 447, 426, 402, 376, 348, 317, 284, 250, 214, 177, 139, 100, 60, 20,
-20, -60, -100, -139, -177, -214, -250, -284, -317, -348, -376, -402, -426, -447, -465, -480, -493, -502, -508, -512,
-512, -508, -502, -493, -480, -465, -447, -426, -402, -376, -348, -317, -284, -250, -214, -177, -139, -100, -60, -20},
{511, 506, 495, 478, 456, 429, 398, 362, 322, 279, 232, 183, 133, 80, 27, -27, -80, -133, -183, -232,
-279, -322, -362, -398, -429, -456, -478, -495, -506, -511, -511, -506, -495, -478, -456, -429, -398, -362, -322, -279,
-232, -183, -133, -80, -27, 27, 80, 133, 183, 232, 279, 322, 362, 398, 429, 456, 478, 495, 506, 511},
{511, 502, 485, 459, 426, 385, 338, 284, 226, 165, 100, 33, -33, -100, -165, -226, -284, -338, -385, -426,
-459, -485, -502, -511, -511, -502, -485, -459, -426, -385, -338, -284, -226, -165, -100, -33, 33, 100, 165, 226,
284, 338, 385, 426, 459, 485, 502, 511, 511, 502, 485, 459, 426, 385, 338, 284, 226, 165, 100, 33},
{510, 498, 473, 437, 389, 333, 268, 196, 120, 40, -40, -120, -196, -268, -333, -389, -437, -473, -498, -510,
-510, -498, -473, -437, -389, -333, -268, -196, -120, -40, 40, 120, 196, 268, 333, 389, 437, 473, 498, 510,
510, 498, 473, 437, 389, 333, 268, 196, 120, 40, -40, -120, -196, -268, -333, -389, -437, -473, -498, -510}
};

78
webrtc/modules/audio_coding/codecs/isac/main/source/spectrum_ar_model_tables.h Normal file
View File

@ -0,0 +1,78 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* spectrum_ar_model_tables.h
*
* This file contains definitions of tables with AR coefficients,
* Gain coefficients and cosine tables.
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_
#include "structs.h"
#define NUM_AR_RC_QUANT_BAUNDARY 12
/********************* AR Coefficient Tables ************************/
/* cdf for quantized reflection coefficient 1 */
extern const uint16_t WebRtcIsac_kQArRc1Cdf[NUM_AR_RC_QUANT_BAUNDARY];
/* cdf for quantized reflection coefficient 2 */
extern const uint16_t WebRtcIsac_kQArRc2Cdf[NUM_AR_RC_QUANT_BAUNDARY];
/* cdf for quantized reflection coefficient 3 */
extern const uint16_t WebRtcIsac_kQArRc3Cdf[NUM_AR_RC_QUANT_BAUNDARY];
/* cdf for quantized reflection coefficient 4 */
extern const uint16_t WebRtcIsac_kQArRc4Cdf[NUM_AR_RC_QUANT_BAUNDARY];
/* cdf for quantized reflection coefficient 5 */
extern const uint16_t WebRtcIsac_kQArRc5Cdf[NUM_AR_RC_QUANT_BAUNDARY];
/* cdf for quantized reflection coefficient 6 */
extern const uint16_t WebRtcIsac_kQArRc6Cdf[NUM_AR_RC_QUANT_BAUNDARY];
/* quantization boundary levels for reflection coefficients */
extern const int16_t WebRtcIsac_kQArBoundaryLevels[NUM_AR_RC_QUANT_BAUNDARY];
/* initial indices for AR reflection coefficient quantizer and cdf table search */
extern const uint16_t WebRtcIsac_kQArRcInitIndex[AR_ORDER];
/* pointers to AR cdf tables */
extern const uint16_t *WebRtcIsac_kQArRcCdfPtr[AR_ORDER];
/* pointers to AR representation levels tables */
extern const int16_t *WebRtcIsac_kQArRcLevelsPtr[AR_ORDER];
/******************** GAIN Coefficient Tables ***********************/
/* cdf for Gain coefficient */
extern const uint16_t WebRtcIsac_kQGainCdf[19];
/* representation levels for quantized Gain coefficient */
extern const int32_t WebRtcIsac_kQGain2Levels[18];
/* squared quantization boundary levels for Gain coefficient */
extern const int32_t WebRtcIsac_kQGain2BoundaryLevels[19];
/* pointer to Gain cdf table */
extern const uint16_t *WebRtcIsac_kQGainCdf_ptr[1];
/* Gain initial index for gain quantizer and cdf table search */
extern const uint16_t WebRtcIsac_kQGainInitIndex[1];
/************************* Cosine Tables ****************************/
/* Cosine table */
extern const int16_t WebRtcIsac_kCos[6][60];
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_ */

498
webrtc/modules/audio_coding/codecs/isac/main/source/structs.h Normal file
View File

@ -0,0 +1,498 @@
/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* structs.h
*
* This header file contains all the structs used in the ISAC codec
*
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_STRUCTS_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_STRUCTS_H_
#include "webrtc/modules/audio_coding/codecs/isac/bandwidth_info.h"
#include "webrtc/modules/audio_coding/codecs/isac/main/interface/isac.h"
#include "webrtc/modules/audio_coding/codecs/isac/main/source/settings.h"
#include "webrtc/typedefs.h"
typedef struct Bitstreamstruct {
uint8_t stream[STREAM_SIZE_MAX];
uint32_t W_upper;
uint32_t streamval;
uint32_t stream_index;
} Bitstr;
typedef struct {
double DataBufferLo[WINLEN];
double DataBufferHi[WINLEN];
double CorrBufLo[ORDERLO+1];
double CorrBufHi[ORDERHI+1];
float PreStateLoF[ORDERLO+1];
float PreStateLoG[ORDERLO+1];
float PreStateHiF[ORDERHI+1];
float PreStateHiG[ORDERHI+1];
float PostStateLoF[ORDERLO+1];
float PostStateLoG[ORDERLO+1];
float PostStateHiF[ORDERHI+1];
float PostStateHiG[ORDERHI+1];
double OldEnergy;
} MaskFiltstr;
typedef struct {
//state vectors for each of the two analysis filters
double INSTAT1[2*(QORDER-1)];
double INSTAT2[2*(QORDER-1)];
double INSTATLA1[2*(QORDER-1)];
double INSTATLA2[2*(QORDER-1)];
double INLABUF1[QLOOKAHEAD];
double INLABUF2[QLOOKAHEAD];
float INSTAT1_float[2*(QORDER-1)];
float INSTAT2_float[2*(QORDER-1)];
float INSTATLA1_float[2*(QORDER-1)];
float INSTATLA2_float[2*(QORDER-1)];
float INLABUF1_float[QLOOKAHEAD];
float INLABUF2_float[QLOOKAHEAD];
/* High pass filter */
double HPstates[HPORDER];
float HPstates_float[HPORDER];
} PreFiltBankstr;
typedef struct {
//state vectors for each of the two analysis filters
double STATE_0_LOWER[2*POSTQORDER];
double STATE_0_UPPER[2*POSTQORDER];
/* High pass filter */
double HPstates1[HPORDER];
double HPstates2[HPORDER];
float STATE_0_LOWER_float[2*POSTQORDER];
float STATE_0_UPPER_float[2*POSTQORDER];
float HPstates1_float[HPORDER];
float HPstates2_float[HPORDER];
} PostFiltBankstr;
typedef struct {
//data buffer for pitch filter
double ubuf[PITCH_BUFFSIZE];
//low pass state vector
double ystate[PITCH_DAMPORDER];
//old lag and gain
double oldlagp[1];
double oldgainp[1];
} PitchFiltstr;
typedef struct {
//data buffer
double buffer[PITCH_WLPCBUFLEN];
//state vectors
double istate[PITCH_WLPCORDER];
double weostate[PITCH_WLPCORDER];
double whostate[PITCH_WLPCORDER];
//LPC window -> should be a global array because constant
double window[PITCH_WLPCWINLEN];
} WeightFiltstr;
typedef struct {
//for inital estimator
double dec_buffer[PITCH_CORR_LEN2 + PITCH_CORR_STEP2 +
PITCH_MAX_LAG/2 - PITCH_FRAME_LEN/2+2];
double decimator_state[2*ALLPASSSECTIONS+1];
double hp_state[2];
double whitened_buf[QLOOKAHEAD];
double inbuf[QLOOKAHEAD];
PitchFiltstr PFstr_wght;
PitchFiltstr PFstr;
WeightFiltstr Wghtstr;
} PitchAnalysisStruct;
/* Have instance of struct together with other iSAC structs */
typedef struct {
/* Previous frame length (in ms) */
int32_t prev_frame_length;
/* Previous RTP timestamp from received
packet (in samples relative beginning) */
int32_t prev_rec_rtp_number;
/* Send timestamp for previous packet (in ms using timeGetTime()) */
uint32_t prev_rec_send_ts;
/* Arrival time for previous packet (in ms using timeGetTime()) */
uint32_t prev_rec_arr_ts;
/* rate of previous packet, derived from RTP timestamps (in bits/s) */
float prev_rec_rtp_rate;
/* Time sinse the last update of the BN estimate (in ms) */
uint32_t last_update_ts;
/* Time sinse the last reduction (in ms) */
uint32_t last_reduction_ts;
/* How many times the estimate was update in the beginning */
int32_t count_tot_updates_rec;
/* The estimated bottle neck rate from there to here (in bits/s) */
int32_t rec_bw;
float rec_bw_inv;
float rec_bw_avg;
float rec_bw_avg_Q;
/* The estimated mean absolute jitter value,
as seen on this side (in ms) */
float rec_jitter;
float rec_jitter_short_term;
float rec_jitter_short_term_abs;
float rec_max_delay;
float rec_max_delay_avg_Q;
/* (assumed) bitrate for headers (bps) */
float rec_header_rate;
/* The estimated bottle neck rate from here to there (in bits/s) */
float send_bw_avg;
/* The estimated mean absolute jitter value, as seen on
the other siee (in ms) */
float send_max_delay_avg;
// number of packets received since last update
int num_pkts_rec;
int num_consec_rec_pkts_over_30k;
// flag for marking that a high speed network has been
// detected downstream
int hsn_detect_rec;
int num_consec_snt_pkts_over_30k;
// flag for marking that a high speed network has
// been detected upstream
int hsn_detect_snd;
uint32_t start_wait_period;
int in_wait_period;
int change_to_WB;
uint32_t senderTimestamp;
uint32_t receiverTimestamp;
//enum IsacSamplingRate incomingStreamSampFreq;
uint16_t numConsecLatePkts;
float consecLatency;
int16_t inWaitLatePkts;
IsacBandwidthInfo external_bw_info;
} BwEstimatorstr;
typedef struct {
/* boolean, flags if previous packet exceeded B.N. */
int PrevExceed;
/* ms */
int ExceedAgo;
/* packets left to send in current burst */
int BurstCounter;
/* packets */
int InitCounter;
/* ms remaining in buffer when next packet will be sent */
double StillBuffered;
} RateModel;
typedef struct {
unsigned int SpaceAlloced;
unsigned int MaxPermAlloced;
double Tmp0[MAXFFTSIZE];
double Tmp1[MAXFFTSIZE];
double Tmp2[MAXFFTSIZE];
double Tmp3[MAXFFTSIZE];
int Perm[MAXFFTSIZE];
int factor [NFACTOR];
} FFTstr;
/* The following strutc is used to store data from encoding, to make it
fast and easy to construct a new bitstream with a different Bandwidth
estimate. All values (except framelength and minBytes) is double size to
handle 60 ms of data.
*/
typedef struct {
/* Used to keep track of if it is first or second part of 60 msec packet */
int startIdx;
/* Frame length in samples */
int16_t framelength;
/* Pitch Gain */
int pitchGain_index[2];
/* Pitch Lag */
double meanGain[2];
int pitchIndex[PITCH_SUBFRAMES*2];
/* LPC */
int LPCindex_s[108*2]; /* KLT_ORDER_SHAPE = 108 */
int LPCindex_g[12*2]; /* KLT_ORDER_GAIN = 12 */
double LPCcoeffs_lo[(ORDERLO+1)*SUBFRAMES*2];
double LPCcoeffs_hi[(ORDERHI+1)*SUBFRAMES*2];
/* Encode Spec */
int16_t fre[FRAMESAMPLES];
int16_t fim[FRAMESAMPLES];
int16_t AvgPitchGain[2];
/* Used in adaptive mode only */
int minBytes;
} IsacSaveEncoderData;
typedef struct {
int indexLPCShape[UB_LPC_ORDER * UB16_LPC_VEC_PER_FRAME];
double lpcGain[SUBFRAMES<<1];
int lpcGainIndex[SUBFRAMES<<1];
Bitstr bitStreamObj;
int16_t realFFT[FRAMESAMPLES_HALF];
int16_t imagFFT[FRAMESAMPLES_HALF];
} ISACUBSaveEncDataStruct;
typedef struct {
Bitstr bitstr_obj;
MaskFiltstr maskfiltstr_obj;
PreFiltBankstr prefiltbankstr_obj;
PitchFiltstr pitchfiltstr_obj;
PitchAnalysisStruct pitchanalysisstr_obj;
FFTstr fftstr_obj;
IsacSaveEncoderData SaveEnc_obj;
int buffer_index;
int16_t current_framesamples;
float data_buffer_float[FRAMESAMPLES_30ms];
int frame_nb;
double bottleneck;
int16_t new_framelength;
double s2nr;
/* Maximum allowed number of bits for a 30 msec packet */
int16_t payloadLimitBytes30;
/* Maximum allowed number of bits for a 30 msec packet */
int16_t payloadLimitBytes60;
/* Maximum allowed number of bits for both 30 and 60 msec packet */
int16_t maxPayloadBytes;
/* Maximum allowed rate in bytes per 30 msec packet */
int16_t maxRateInBytes;
/*---
If set to 1 iSAC will not addapt the frame-size, if used in
channel-adaptive mode. The initial value will be used for all rates.
---*/
int16_t enforceFrameSize;
/*-----
This records the BWE index the encoder injected into the bit-stream.
It will be used in RCU. The same BWE index of main payload will be in
the redundant payload. We can not retrive it from BWE because it is
a recursive procedure (WebRtcIsac_GetDownlinkBwJitIndexImpl) and has to be
called only once per each encode.
-----*/
int16_t lastBWIdx;
} ISACLBEncStruct;
typedef struct {
Bitstr bitstr_obj;
MaskFiltstr maskfiltstr_obj;
PreFiltBankstr prefiltbankstr_obj;
FFTstr fftstr_obj;
ISACUBSaveEncDataStruct SaveEnc_obj;
int buffer_index;
float data_buffer_float[MAX_FRAMESAMPLES +
LB_TOTAL_DELAY_SAMPLES];
double bottleneck;
/* Maximum allowed number of bits for a 30 msec packet */
//int16_t payloadLimitBytes30;
/* Maximum allowed number of bits for both 30 and 60 msec packet */
//int16_t maxPayloadBytes;
int16_t maxPayloadSizeBytes;
double lastLPCVec[UB_LPC_ORDER];
int16_t numBytesUsed;
int16_t lastJitterInfo;
} ISACUBEncStruct;
typedef struct {
Bitstr bitstr_obj;
MaskFiltstr maskfiltstr_obj;
PostFiltBankstr postfiltbankstr_obj;
PitchFiltstr pitchfiltstr_obj;
FFTstr fftstr_obj;
} ISACLBDecStruct;
typedef struct {
Bitstr bitstr_obj;
MaskFiltstr maskfiltstr_obj;
PostFiltBankstr postfiltbankstr_obj;
FFTstr fftstr_obj;
} ISACUBDecStruct;
typedef struct {
ISACLBEncStruct ISACencLB_obj;
ISACLBDecStruct ISACdecLB_obj;
} ISACLBStruct;
typedef struct {
ISACUBEncStruct ISACencUB_obj;
ISACUBDecStruct ISACdecUB_obj;
} ISACUBStruct;
/*
This struct is used to take a snapshot of the entropy coder and LPC gains
right before encoding LPC gains. This allows us to go back to that state
if we like to limit the payload size.
*/
typedef struct {
/* 6 lower-band & 6 upper-band */
double loFiltGain[SUBFRAMES];
double hiFiltGain[SUBFRAMES];
/* Upper boundary of interval W */
uint32_t W_upper;
uint32_t streamval;
/* Index to the current position in bytestream */
uint32_t stream_index;
uint8_t stream[3];
} transcode_obj;
typedef struct {
// TODO(kwiberg): The size of these tables could be reduced by storing floats
// instead of doubles, and by making use of the identity cos(x) =
// sin(x+pi/2). They could also be made global constants that we fill in at
// compile time.
double costab1[FRAMESAMPLES_HALF];
double sintab1[FRAMESAMPLES_HALF];
double costab2[FRAMESAMPLES_QUARTER];
double sintab2[FRAMESAMPLES_QUARTER];
} TransformTables;
typedef struct {
// lower-band codec instance
ISACLBStruct instLB;
// upper-band codec instance
ISACUBStruct instUB;
// Bandwidth Estimator and model for the rate.
BwEstimatorstr bwestimator_obj;
RateModel rate_data_obj;
double MaxDelay;
/* 0 = adaptive; 1 = instantaneous */
int16_t codingMode;
// overall bottleneck of the codec
int32_t bottleneck;
// QMF Filter state
int32_t analysisFBState1[FB_STATE_SIZE_WORD32];
int32_t analysisFBState2[FB_STATE_SIZE_WORD32];
int32_t synthesisFBState1[FB_STATE_SIZE_WORD32];
int32_t synthesisFBState2[FB_STATE_SIZE_WORD32];
// Error Code
int16_t errorCode;
// bandwidth of the encoded audio 8, 12 or 16 kHz
enum ISACBandwidth bandwidthKHz;
// Sampling rate of audio, encoder and decode, 8 or 16 kHz
enum IsacSamplingRate encoderSamplingRateKHz;
enum IsacSamplingRate decoderSamplingRateKHz;
// Flag to keep track of initializations, lower & upper-band
// encoder and decoder.
int16_t initFlag;
// Flag to to indicate signal bandwidth switch
int16_t resetFlag_8kHz;
// Maximum allowed rate, measured in Bytes per 30 ms.
int16_t maxRateBytesPer30Ms;
// Maximum allowed payload-size, measured in Bytes.
int16_t maxPayloadSizeBytes;
/* The expected sampling rate of the input signal. Valid values are 16000,
* 32000 and 48000. This is not the operation sampling rate of the codec.
* Input signals at 48 kHz are resampled to 32 kHz, then encoded. */
uint16_t in_sample_rate_hz;
/* State for the input-resampler. It is only used for 48 kHz input signals. */
int16_t state_in_resampler[SIZE_RESAMPLER_STATE];
// Trig tables for WebRtcIsac_Time2Spec and WebRtcIsac_Spec2time.
TransformTables transform_tables;
} ISACMainStruct;
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_STRUCTS_H_ */