blob: 58335b9f79593b7e9fefb0d133d2e158764dfe5a [file] [log] [blame]
/*
* 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.h"
#include "third_party/blink/public/platform/web_audio_source_provider.h"
#include "third_party/blink/public/platform/web_media_stream_track.h"
#include "third_party/blink/renderer/platform/audio/audio_bus.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_center.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_source.h"
#include "third_party/blink/renderer/platform/uuid.h"
namespace blink {
namespace {
static int g_unique_media_stream_component_id = 0;
} // namespace
// static
int MediaStreamComponent::GenerateUniqueId() {
return ++g_unique_media_stream_component_id;
}
MediaStreamComponent* MediaStreamComponent::Create(MediaStreamSource* source) {
return MakeGarbageCollected<MediaStreamComponent>(CreateCanonicalUUIDString(),
source);
}
MediaStreamComponent* MediaStreamComponent::Create(const String& id,
MediaStreamSource* source) {
return MakeGarbageCollected<MediaStreamComponent>(id, source);
}
MediaStreamComponent::MediaStreamComponent(const String& id,
MediaStreamSource* source)
: source_(source), id_(id), unique_id_(GenerateUniqueId()) {
DCHECK(id_.length());
DCHECK(source_);
}
MediaStreamComponent* MediaStreamComponent::Clone() const {
MediaStreamComponent* cloned_component =
MakeGarbageCollected<MediaStreamComponent>(CreateCanonicalUUIDString(),
Source());
cloned_component->SetEnabled(enabled_);
cloned_component->SetMuted(muted_);
cloned_component->SetContentHint(content_hint_);
cloned_component->SetConstraints(constraints_);
return cloned_component;
}
void MediaStreamComponent::Dispose() {
platform_track_.reset();
}
void MediaStreamComponent::AudioSourceProviderImpl::Wrap(
WebAudioSourceProvider* provider) {
MutexLocker locker(provide_input_lock_);
web_audio_source_provider_ = provider;
}
void MediaStreamComponent::GetSettings(
WebMediaStreamTrack::Settings& settings) {
DCHECK(platform_track_);
source_->GetSettings(settings);
platform_track_->GetSettings(settings);
}
void MediaStreamComponent::SetContentHint(
WebMediaStreamTrack::ContentHintType hint) {
switch (hint) {
case WebMediaStreamTrack::ContentHintType::kNone:
break;
case WebMediaStreamTrack::ContentHintType::kAudioSpeech:
case WebMediaStreamTrack::ContentHintType::kAudioMusic:
DCHECK_EQ(MediaStreamSource::kTypeAudio, Source()->GetType());
break;
case WebMediaStreamTrack::ContentHintType::kVideoMotion:
case WebMediaStreamTrack::ContentHintType::kVideoDetail:
case WebMediaStreamTrack::ContentHintType::kVideoText:
DCHECK_EQ(MediaStreamSource::kTypeVideo, Source()->GetType());
break;
}
if (hint == content_hint_)
return;
content_hint_ = hint;
MediaStreamCenter::Instance().DidSetContentHint(this);
}
void MediaStreamComponent::AudioSourceProviderImpl::ProvideInput(
AudioBus* bus,
uint32_t frames_to_process) {
DCHECK(bus);
if (!bus)
return;
MutexTryLocker try_locker(provide_input_lock_);
if (!try_locker.Locked() || !web_audio_source_provider_) {
bus->Zero();
return;
}
// Wrap the AudioBus channel data using WebVector.
uint32_t n = bus->NumberOfChannels();
WebVector<float*> web_audio_data(n);
for (uint32_t i = 0; i < n; ++i)
web_audio_data[i] = bus->Channel(i)->MutableData();
web_audio_source_provider_->ProvideInput(web_audio_data, frames_to_process);
}
void MediaStreamComponent::Trace(blink::Visitor* visitor) {
visitor->Trace(source_);
}
} // namespace blink