c4fb4e38de
Corresponds to upstream commit 524e9b043e7e86fd72353b987c9d5f6a1ebf83e1 Update notes: * Moved src/ to webrtc/ to easily diff against the third_party/webrtc in the chromium tree * ARM/NEON/MIPS support is not yet hooked up * Tests have not been copied
91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/*
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* This file contains implementations of the iLBC specific functions
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* WebRtcSpl_ReverseOrderMultArrayElements()
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* WebRtcSpl_ElementwiseVectorMult()
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* WebRtcSpl_AddVectorsAndShift()
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* WebRtcSpl_AddAffineVectorToVector()
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* WebRtcSpl_AffineTransformVector()
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*
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*/
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#include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
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void WebRtcSpl_ReverseOrderMultArrayElements(int16_t *out, const int16_t *in,
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const int16_t *win,
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size_t vector_length,
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int16_t right_shifts)
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{
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size_t i;
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int16_t *outptr = out;
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const int16_t *inptr = in;
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const int16_t *winptr = win;
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for (i = 0; i < vector_length; i++)
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{
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*outptr++ = (int16_t)((*inptr++ * *winptr--) >> right_shifts);
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}
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}
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void WebRtcSpl_ElementwiseVectorMult(int16_t *out, const int16_t *in,
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const int16_t *win, size_t vector_length,
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int16_t right_shifts)
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{
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size_t i;
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int16_t *outptr = out;
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const int16_t *inptr = in;
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const int16_t *winptr = win;
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for (i = 0; i < vector_length; i++)
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{
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*outptr++ = (int16_t)((*inptr++ * *winptr++) >> right_shifts);
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}
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}
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void WebRtcSpl_AddVectorsAndShift(int16_t *out, const int16_t *in1,
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const int16_t *in2, size_t vector_length,
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int16_t right_shifts)
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{
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size_t i;
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int16_t *outptr = out;
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const int16_t *in1ptr = in1;
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const int16_t *in2ptr = in2;
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for (i = vector_length; i > 0; i--)
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{
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(*outptr++) = (int16_t)(((*in1ptr++) + (*in2ptr++)) >> right_shifts);
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}
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}
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void WebRtcSpl_AddAffineVectorToVector(int16_t *out, int16_t *in,
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int16_t gain, int32_t add_constant,
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int16_t right_shifts,
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size_t vector_length)
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{
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size_t i;
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for (i = 0; i < vector_length; i++)
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{
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out[i] += (int16_t)((in[i] * gain + add_constant) >> right_shifts);
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}
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}
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void WebRtcSpl_AffineTransformVector(int16_t *out, int16_t *in,
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int16_t gain, int32_t add_constant,
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int16_t right_shifts, size_t vector_length)
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{
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size_t i;
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for (i = 0; i < vector_length; i++)
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{
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out[i] = (int16_t)((in[i] * gain + add_constant) >> right_shifts);
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}
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}
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