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// Copyright 2017 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/remote_media_stream_track_adapter.h"
#include "base/task/single_thread_task_runner.h"
#include "media/base/limits.h"
#include "third_party/blink/renderer/modules/mediastream/media_stream_video_track.h"
#include "third_party/blink/renderer/modules/peerconnection/media_stream_remote_video_source.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_audio_source.h"
#include "third_party/blink/renderer/platform/scheduler/public/post_cross_thread_task.h"
#include "third_party/blink/renderer/platform/webrtc/peer_connection_remote_audio_source.h"
#include "third_party/blink/renderer/platform/webrtc/track_observer.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_copier_base.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_copier_std.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"
#include "third_party/blink/renderer/platform/wtf/functional.h"
namespace blink {
RemoteVideoTrackAdapter::RemoteVideoTrackAdapter(
const scoped_refptr<base::SingleThreadTaskRunner>& main_thread,
webrtc::VideoTrackInterface* webrtc_track,
ExecutionContext* track_execution_context)
: RemoteMediaStreamTrackAdapter(main_thread,
webrtc_track,
track_execution_context) {
std::unique_ptr<TrackObserver> observer(
new TrackObserver(main_thread, observed_track().get()));
// Here, we use CrossThreadUnretained() to avoid a circular reference.
web_initialize_ =
CrossThreadBindOnce(&RemoteVideoTrackAdapter::InitializeWebVideoTrack,
CrossThreadUnretained(this), std::move(observer),
observed_track()->enabled());
}
RemoteVideoTrackAdapter::~RemoteVideoTrackAdapter() {
DCHECK(main_thread_->BelongsToCurrentThread());
if (initialized()) {
// TODO(crbug.com/704136): When moving RemoteVideoTrackAdapter out of the
// public API, make this managed by Oilpan. Note that, the destructor will
// not allowed to touch other on-heap objects like track().
static_cast<MediaStreamRemoteVideoSource*>(
track()->Source()->GetPlatformSource())
->OnSourceTerminated();
}
}
void RemoteVideoTrackAdapter::InitializeWebVideoTrack(
std::unique_ptr<TrackObserver> observer,
bool enabled) {
DCHECK(main_thread_->BelongsToCurrentThread());
auto video_source_ptr = std::make_unique<MediaStreamRemoteVideoSource>(
main_thread_, std::move(observer));
MediaStreamRemoteVideoSource* video_source = video_source_ptr.get();
InitializeTrack(
MediaStreamSource::kTypeVideo, std::move(video_source_ptr),
std::make_unique<MediaStreamVideoTrack>(
video_source, MediaStreamVideoSource::ConstraintsOnceCallback(),
enabled));
MediaStreamSource::Capabilities capabilities;
capabilities.device_id = id();
track()->Source()->SetCapabilities(capabilities);
}
RemoteAudioTrackAdapter::RemoteAudioTrackAdapter(
const scoped_refptr<base::SingleThreadTaskRunner>& main_thread,
webrtc::AudioTrackInterface* webrtc_track,
ExecutionContext* track_execution_context)
: RemoteMediaStreamTrackAdapter(main_thread,
webrtc_track,
track_execution_context),
#if DCHECK_IS_ON()
unregistered_(false),
#endif
state_(observed_track()->state()) {
// TODO(tommi): Use TrackObserver instead.
observed_track()->RegisterObserver(this);
// Here, we use CrossThreadUnretained() to avoid a circular reference.
web_initialize_ =
CrossThreadBindOnce(&RemoteAudioTrackAdapter::InitializeWebAudioTrack,
CrossThreadUnretained(this), main_thread);
}
RemoteAudioTrackAdapter::~RemoteAudioTrackAdapter() {
#if DCHECK_IS_ON()
DCHECK(unregistered_);
#endif
}
void RemoteAudioTrackAdapter::Unregister() {
#if DCHECK_IS_ON()
DCHECK(!unregistered_);
unregistered_ = true;
#endif
observed_track()->UnregisterObserver(this);
}
void RemoteAudioTrackAdapter::InitializeWebAudioTrack(
const scoped_refptr<base::SingleThreadTaskRunner>& main_thread) {
auto source = std::make_unique<PeerConnectionRemoteAudioSource>(
observed_track().get(), main_thread);
auto* source_ptr = source.get();
InitializeTrack(
MediaStreamSource::kTypeAudio, std::move(source),
std::make_unique<PeerConnectionRemoteAudioTrack>(observed_track().get()));
MediaStreamSource::Capabilities capabilities;
capabilities.device_id = id();
capabilities.echo_cancellation = Vector<bool>({false});
capabilities.auto_gain_control = Vector<bool>({false});
capabilities.noise_suppression = Vector<bool>({false});
capabilities.voice_isolation = Vector<bool>({false});
capabilities.sample_size = {
media::SampleFormatToBitsPerChannel(media::kSampleFormatS16), // min
media::SampleFormatToBitsPerChannel(media::kSampleFormatS16) // max
};
track()->Source()->SetCapabilities(capabilities);
source_ptr->ConnectToInitializedTrack(track());
}
void RemoteAudioTrackAdapter::OnChanged() {
PostCrossThreadTask(
*main_thread_, FROM_HERE,
CrossThreadBindOnce(&RemoteAudioTrackAdapter::OnChangedOnMainThread,
WrapRefCounted(this), observed_track()->state()));
}
void RemoteAudioTrackAdapter::OnChangedOnMainThread(
webrtc::MediaStreamTrackInterface::TrackState state) {
DCHECK(main_thread_->BelongsToCurrentThread());
if (state == state_ || !initialized())
return;
state_ = state;
switch (state) {
case webrtc::MediaStreamTrackInterface::kLive:
track()->Source()->SetReadyState(MediaStreamSource::kReadyStateLive);
break;
case webrtc::MediaStreamTrackInterface::kEnded:
track()->Source()->SetReadyState(MediaStreamSource::kReadyStateEnded);
break;
default:
NOTREACHED();
}
}
} // namespace blink
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