753eada3aa
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
59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef WEBRTC_VOICE_ENGINE_AUDIO_FRAME_OPERATIONS_H_
|
|
#define WEBRTC_VOICE_ENGINE_AUDIO_FRAME_OPERATIONS_H_
|
|
|
|
#include "webrtc/typedefs.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class AudioFrame;
|
|
|
|
// TODO(andrew): consolidate this with utility.h and audio_frame_manipulator.h.
|
|
// Change reference parameters to pointers. Consider using a namespace rather
|
|
// than a class.
|
|
class AudioFrameOperations {
|
|
public:
|
|
// Upmixes mono |src_audio| to stereo |dst_audio|. This is an out-of-place
|
|
// operation, meaning src_audio and dst_audio must point to different
|
|
// buffers. It is the caller's responsibility to ensure that |dst_audio| is
|
|
// sufficiently large.
|
|
static void MonoToStereo(const int16_t* src_audio, size_t samples_per_channel,
|
|
int16_t* dst_audio);
|
|
// |frame.num_channels_| will be updated. This version checks for sufficient
|
|
// buffer size and that |num_channels_| is mono.
|
|
static int MonoToStereo(AudioFrame* frame);
|
|
|
|
// Downmixes stereo |src_audio| to mono |dst_audio|. This is an in-place
|
|
// operation, meaning |src_audio| and |dst_audio| may point to the same
|
|
// buffer.
|
|
static void StereoToMono(const int16_t* src_audio, size_t samples_per_channel,
|
|
int16_t* dst_audio);
|
|
// |frame.num_channels_| will be updated. This version checks that
|
|
// |num_channels_| is stereo.
|
|
static int StereoToMono(AudioFrame* frame);
|
|
|
|
// Swap the left and right channels of |frame|. Fails silently if |frame| is
|
|
// not stereo.
|
|
static void SwapStereoChannels(AudioFrame* frame);
|
|
|
|
// Zeros out the audio and sets |frame.energy| to zero.
|
|
static void Mute(AudioFrame& frame);
|
|
|
|
static int Scale(float left, float right, AudioFrame& frame);
|
|
|
|
static int ScaleWithSat(float scale, AudioFrame& frame);
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // #ifndef WEBRTC_VOICE_ENGINE_AUDIO_FRAME_OPERATIONS_H_
|