frame_combiner.cc | Explore in Territory

/*
 *  Copyright (c) 2017 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 "modules/audio_mixer/frame_combiner.h"

#include <algorithm>
#include <array>
#include <cstdint>
#include <iterator>
#include <memory>
#include <string>
#include <utility>
#include <vector>

#include "api/array_view.h"
#include "api/audio/audio_processing.h"
#include "api/rtp_packet_info.h"
#include "api/rtp_packet_infos.h"
#include "common_audio/include/audio_util.h"
#include "modules/audio_mixer/audio_frame_manipulator.h"
#include "modules/audio_mixer/audio_mixer_impl.h"
#include "modules/audio_processing/include/audio_frame_view.h"
#include "modules/audio_processing/logging/apm_data_dumper.h"
#include "rtc_base/arraysize.h"
#include "rtc_base/checks.h"
#include "rtc_base/numerics/safe_conversions.h"
#include "system_wrappers/include/metrics.h"

namespace webrtc {
namespace {

void SetAudioFrameFields(rtc::ArrayView<const AudioFrame* const> mix_list,
                         size_t number_of_channels,
                         int sample_rate,
                         size_t number_of_streams,
                         AudioFrame* audio_frame_for_mixing) { … }

void MixFewFramesWithNoLimiter(rtc::ArrayView<const AudioFrame* const> mix_list,
                               AudioFrame* audio_frame_for_mixing) { … }

void MixToFloatFrame(rtc::ArrayView<const AudioFrame* const> mix_list,
                     DeinterleavedView<float>& mixing_buffer) { … }

void RunLimiter(DeinterleavedView<float> deinterleaved, Limiter* limiter) { … }

// Both interleaves and rounds.
void InterleaveToAudioFrame(DeinterleavedView<float> deinterleaved,
                            AudioFrame* audio_frame_for_mixing) { … }
}  // namespace

constexpr size_t FrameCombiner::kMaximumNumberOfChannels;
constexpr size_t FrameCombiner::kMaximumChannelSize;

FrameCombiner::FrameCombiner(bool use_limiter)
    : … { … }

FrameCombiner::~FrameCombiner() = default;

void FrameCombiner::Combine(rtc::ArrayView<AudioFrame* const> mix_list,
                            size_t number_of_channels,
                            int sample_rate,
                            size_t number_of_streams,
                            AudioFrame* audio_frame_for_mixing) { … }

}  // namespace webrtc
chromium/third_party/webrtc/modules/audio_mixer/frame_combiner.cc
