webaudio_media_stream_audio_sink.cc

// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/modules/mediastream/webaudio_media_stream_audio_sink.h"

#include <memory>
#include <string>

#include "base/logging.h"
#include "base/trace_event/trace_event.h"
#include "media/base/audio_fifo.h"
#include "media/base/audio_parameters.h"
#include "media/base/audio_timestamp_helper.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/renderer/platform/media/web_audio_source_provider_client.h"

namespace blink {

// Size of the buffer that WebAudio processes each time, it is the same value
// as AudioNode::ProcessingSizeInFrames in WebKit.
// static
const int WebAudioMediaStreamAudioSink::kWebAudioRenderBufferSize = …;

WebAudioMediaStreamAudioSink::WebAudioMediaStreamAudioSink(
    MediaStreamComponent* component,
    int context_sample_rate,
    base::TimeDelta platform_buffer_duration)
    : … { … }

WebAudioMediaStreamAudioSink::~WebAudioMediaStreamAudioSink() { … }

void WebAudioMediaStreamAudioSink::OnSetFormat(
    const media::AudioParameters& params) { … }

void WebAudioMediaStreamAudioSink::OnReadyStateChanged(
    WebMediaStreamSource::ReadyState state) { … }

void WebAudioMediaStreamAudioSink::OnData(
    const media::AudioBus& audio_bus,
    base::TimeTicks estimated_capture_time) { … }

void WebAudioMediaStreamAudioSink::SetClient(
    WebAudioSourceProviderClient* client) { … }

void WebAudioMediaStreamAudioSink::ProvideInput(
    const WebVector<float*>& audio_data,
    int number_of_frames) { … }

void WebAudioMediaStreamAudioSink::ResetFifoStatsForTesting() { … }

const WebAudioMediaStreamAudioSink::FifoStats&
WebAudioMediaStreamAudioSink::GetFifoStatsForTesting() { … }

// |lock_| needs to be acquired before this function is called. It's called by
// AudioConverter which in turn is called by the above ProvideInput() function.
// Thus thread safety analysis is disabled here and |lock_| acquire manually
// asserted.
double WebAudioMediaStreamAudioSink::ProvideInput(
    media::AudioBus* audio_bus,
    uint32_t frames_delayed,
    const media::AudioGlitchInfo& glitch_info) NO_THREAD_SAFETY_ANALYSIS { … }


}  // namespace blink
chromium/third_party/blink/renderer/modules/mediastream/webaudio_media_stream_audio_sink.cc
