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/*
* Copyright (C) 2011 Ericsson AB. All rights reserved.
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/platform/mediastream/media_stream_component_impl.h"
#include "base/synchronization/lock.h"
#include "third_party/blink/public/platform/modules/mediastream/web_media_stream_audio_sink.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_source.h"
#include "third_party/blink/renderer/platform/wtf/uuid.h"
namespace blink {
namespace {
static int g_unique_media_stream_component_id = 0;
void CheckSourceAndTrackSameType(
const MediaStreamSource* source,
const MediaStreamTrackPlatform* platform_track) {
// Ensure the source and platform_track have the same types.
switch (source->GetType()) {
case MediaStreamSource::kTypeAudio:
CHECK(platform_track->Type() ==
MediaStreamTrackPlatform::StreamType::kAudio);
return;
case MediaStreamSource::kTypeVideo:
CHECK(platform_track->Type() ==
MediaStreamTrackPlatform::StreamType::kVideo);
return;
}
NOTREACHED();
}
} // namespace
// static
int MediaStreamComponentImpl::GenerateUniqueId() {
return ++g_unique_media_stream_component_id;
}
MediaStreamComponentImpl::MediaStreamComponentImpl(
const String& id,
MediaStreamSource* source,
std::unique_ptr<MediaStreamTrackPlatform> platform_track)
: source_(source),
id_(id),
unique_id_(GenerateUniqueId()),
platform_track_(std::move(platform_track)) {
DCHECK(platform_track_);
CheckSourceAndTrackSameType(source, platform_track_.get());
}
MediaStreamComponentImpl::MediaStreamComponentImpl(
MediaStreamSource* source,
std::unique_ptr<MediaStreamTrackPlatform> platform_track)
: MediaStreamComponentImpl(WTF::CreateCanonicalUUIDString(),
source,
std::move(platform_track)) {}
MediaStreamComponentImpl* MediaStreamComponentImpl::Clone() const {
const String id = WTF::CreateCanonicalUUIDString();
std::unique_ptr<MediaStreamTrackPlatform> cloned_platform_track =
platform_track_->CreateFromComponent(this, id);
auto* cloned_component = MakeGarbageCollected<MediaStreamComponentImpl>(
id, Source(), std::move(cloned_platform_track));
cloned_component->SetEnabled(enabled_);
cloned_component->SetContentHint(content_hint_);
return cloned_component;
}
void MediaStreamComponentImpl::Dispose() {
platform_track_.reset();
}
void MediaStreamComponentImpl::GetSettings(
MediaStreamTrackPlatform::Settings& settings) {
DCHECK(platform_track_);
source_->GetSettings(settings);
platform_track_->GetSettings(settings);
}
MediaStreamTrackPlatform::CaptureHandle
MediaStreamComponentImpl::GetCaptureHandle() {
DCHECK(platform_track_);
return platform_track_->GetCaptureHandle();
}
void MediaStreamComponentImpl::SetEnabled(bool enabled) {
enabled_ = enabled;
// TODO(https://crbug.com/1302689): Change to a DCHECK(platform_track) once
// the platform_track is always set in the constructor.
if (platform_track_) {
platform_track_->SetEnabled(enabled_);
}
}
void MediaStreamComponentImpl::SetContentHint(
WebMediaStreamTrack::ContentHintType hint) {
switch (hint) {
case WebMediaStreamTrack::ContentHintType::kNone:
break;
case WebMediaStreamTrack::ContentHintType::kAudioSpeech:
case WebMediaStreamTrack::ContentHintType::kAudioMusic:
DCHECK_EQ(MediaStreamSource::kTypeAudio, GetSourceType());
break;
case WebMediaStreamTrack::ContentHintType::kVideoMotion:
case WebMediaStreamTrack::ContentHintType::kVideoDetail:
case WebMediaStreamTrack::ContentHintType::kVideoText:
DCHECK_EQ(MediaStreamSource::kTypeVideo, GetSourceType());
break;
}
if (hint == content_hint_)
return;
content_hint_ = hint;
MediaStreamTrackPlatform* native_track = GetPlatformTrack();
if (native_track)
native_track->SetContentHint(ContentHint());
}
void MediaStreamComponentImpl::AddSourceObserver(
MediaStreamSource::Observer* observer) {
Source()->AddObserver(observer);
}
void MediaStreamComponentImpl::AddSink(WebMediaStreamAudioSink* sink) {
DCHECK(GetPlatformTrack());
GetPlatformTrack()->AddSink(sink);
}
void MediaStreamComponentImpl::AddSink(
WebMediaStreamSink* sink,
const VideoCaptureDeliverFrameCB& callback,
MediaStreamVideoSink::IsSecure is_secure,
MediaStreamVideoSink::UsesAlpha uses_alpha) {
DCHECK(GetPlatformTrack());
GetPlatformTrack()->AddSink(sink, callback, is_secure, uses_alpha);
}
String MediaStreamComponentImpl::ToString() const {
return String::Format("[id: %s, unique_id: %d, enabled: %s]",
Id().Utf8().c_str(), UniqueId(),
Enabled() ? "true" : "false");
}
void MediaStreamComponentImpl::Trace(Visitor* visitor) const {
visitor->Trace(source_);
MediaStreamComponent::Trace(visitor);
}
} // namespace blink
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