blob: 71ed8f8d39515b0d1f6a810b7abe732b1a4d040e [file] [log] [blame]
/*
* Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies).
* Copyright (C) 2015 Ericsson AB. All rights reserved.
* Copyright (C) 2013-2019 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* 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 "config.h"
#include "MediaStreamTrackPrivate.h"
#if ENABLE(MEDIA_STREAM)
#include "GraphicsContext.h"
#include "IntRect.h"
#include "Logging.h"
#include "PlatformMediaSessionManager.h"
#include <wtf/UUID.h>
#if PLATFORM(COCOA)
#include "MediaStreamTrackAudioSourceProviderCocoa.h"
#elif ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM) && USE(GSTREAMER)
#include "AudioSourceProviderGStreamer.h"
#else
#include "WebAudioSourceProvider.h"
#endif
namespace WebCore {
Ref<MediaStreamTrackPrivate> MediaStreamTrackPrivate::create(Ref<const Logger>&& logger, Ref<RealtimeMediaSource>&& source)
{
return create(WTFMove(logger), WTFMove(source), createVersion4UUIDString());
}
Ref<MediaStreamTrackPrivate> MediaStreamTrackPrivate::create(Ref<const Logger>&& logger, Ref<RealtimeMediaSource>&& source, String&& id)
{
return adoptRef(*new MediaStreamTrackPrivate(WTFMove(logger), WTFMove(source), WTFMove(id)));
}
MediaStreamTrackPrivate::MediaStreamTrackPrivate(Ref<const Logger>&& trackLogger, Ref<RealtimeMediaSource>&& source, String&& id)
: m_source(WTFMove(source))
, m_id(WTFMove(id))
, m_logger(WTFMove(trackLogger))
#if !RELEASE_LOG_DISABLED
, m_logIdentifier(uniqueLogIdentifier())
#endif
{
ASSERT(isMainThread());
UNUSED_PARAM(trackLogger);
ALWAYS_LOG(LOGIDENTIFIER);
#if !RELEASE_LOG_DISABLED
m_source->setLogger(m_logger.copyRef(), m_logIdentifier);
#endif
m_source->addObserver(*this);
}
MediaStreamTrackPrivate::~MediaStreamTrackPrivate()
{
ASSERT(isMainThread());
ALWAYS_LOG(LOGIDENTIFIER);
m_source->removeObserver(*this);
}
void MediaStreamTrackPrivate::forEachObserver(const Function<void(Observer&)>& apply)
{
ASSERT(isMainThread());
ASSERT(!m_observers.hasNullReferences());
Ref protectedThis { *this };
m_observers.forEach(apply);
}
void MediaStreamTrackPrivate::addObserver(MediaStreamTrackPrivate::Observer& observer)
{
ASSERT(isMainThread());
m_observers.add(observer);
}
void MediaStreamTrackPrivate::removeObserver(MediaStreamTrackPrivate::Observer& observer)
{
ASSERT(isMainThread());
m_observers.remove(observer);
}
const String& MediaStreamTrackPrivate::label() const
{
return m_source->name();
}
void MediaStreamTrackPrivate::setContentHint(HintValue hintValue)
{
m_contentHint = hintValue;
}
bool MediaStreamTrackPrivate::muted() const
{
return m_source->muted();
}
bool MediaStreamTrackPrivate::isCaptureTrack() const
{
return m_source->isCaptureSource();
}
void MediaStreamTrackPrivate::setEnabled(bool enabled)
{
if (m_isEnabled == enabled)
return;
ALWAYS_LOG(LOGIDENTIFIER, enabled);
// Always update the enabled state regardless of the track being ended.
m_isEnabled = enabled;
forEachObserver([this](auto& observer) {
observer.trackEnabledChanged(*this);
});
}
void MediaStreamTrackPrivate::endTrack()
{
if (m_isEnded)
return;
ALWAYS_LOG(LOGIDENTIFIER);
// Set m_isEnded to true before telling the source it can stop, so if this is the
// only track using the source and it does stop, we will only call each observer's
// trackEnded method once.
m_isEnded = true;
updateReadyState();
m_source->requestToEnd(*this);
forEachObserver([this](auto& observer) {
observer.trackEnded(*this);
});
}
Ref<MediaStreamTrackPrivate> MediaStreamTrackPrivate::clone()
{
auto clonedMediaStreamTrackPrivate = create(m_logger.copyRef(), m_source->clone());
ALWAYS_LOG(LOGIDENTIFIER, clonedMediaStreamTrackPrivate->logIdentifier());
clonedMediaStreamTrackPrivate->m_isEnabled = this->m_isEnabled;
clonedMediaStreamTrackPrivate->m_isEnded = this->m_isEnded;
clonedMediaStreamTrackPrivate->m_contentHint = this->m_contentHint;
clonedMediaStreamTrackPrivate->updateReadyState();
if (isProducingData())
clonedMediaStreamTrackPrivate->startProducingData();
return clonedMediaStreamTrackPrivate;
}
const RealtimeMediaSourceSettings& MediaStreamTrackPrivate::settings() const
{
return m_source->settings();
}
const RealtimeMediaSourceCapabilities& MediaStreamTrackPrivate::capabilities() const
{
return m_source->capabilities();
}
void MediaStreamTrackPrivate::applyConstraints(const MediaConstraints& constraints, RealtimeMediaSource::ApplyConstraintsHandler&& completionHandler)
{
m_source->applyConstraints(constraints, WTFMove(completionHandler));
}
RefPtr<WebAudioSourceProvider> MediaStreamTrackPrivate::createAudioSourceProvider()
{
ALWAYS_LOG(LOGIDENTIFIER);
#if PLATFORM(COCOA)
return MediaStreamTrackAudioSourceProviderCocoa::create(*this);
#elif USE(GSTREAMER)
return AudioSourceProviderGStreamer::create(*this);
#else
return nullptr;
#endif
}
void MediaStreamTrackPrivate::sourceStarted()
{
ALWAYS_LOG(LOGIDENTIFIER);
forEachObserver([this](auto& observer) {
observer.trackStarted(*this);
});
}
void MediaStreamTrackPrivate::sourceStopped()
{
if (m_isEnded)
return;
ALWAYS_LOG(LOGIDENTIFIER);
m_isEnded = true;
updateReadyState();
forEachObserver([this](auto& observer) {
observer.trackEnded(*this);
});
}
void MediaStreamTrackPrivate::sourceMutedChanged()
{
ALWAYS_LOG(LOGIDENTIFIER);
forEachObserver([this](auto& observer) {
observer.trackMutedChanged(*this);
});
}
void MediaStreamTrackPrivate::sourceSettingsChanged()
{
ALWAYS_LOG(LOGIDENTIFIER);
forEachObserver([this](auto& observer) {
observer.trackSettingsChanged(*this);
});
}
bool MediaStreamTrackPrivate::preventSourceFromStopping()
{
ALWAYS_LOG(LOGIDENTIFIER, m_isEnded);
// Do not allow the source to stop if we are still using it.
return !m_isEnded;
}
void MediaStreamTrackPrivate::hasStartedProducingData()
{
ASSERT(isMainThread());
if (m_hasStartedProducingData)
return;
ALWAYS_LOG(LOGIDENTIFIER);
m_hasStartedProducingData = true;
updateReadyState();
}
void MediaStreamTrackPrivate::updateReadyState()
{
ReadyState state = ReadyState::None;
if (m_isEnded)
state = ReadyState::Ended;
else if (m_hasStartedProducingData)
state = ReadyState::Live;
if (state == m_readyState)
return;
ALWAYS_LOG(LOGIDENTIFIER, state == ReadyState::Ended ? "Ended" : "Live");
m_readyState = state;
forEachObserver([this](auto& observer) {
observer.readyStateChanged(*this);
});
}
void MediaStreamTrackPrivate::audioUnitWillStart()
{
if (!m_isEnded)
PlatformMediaSessionManager::sharedManager().sessionCanProduceAudioChanged();
}
#if !RELEASE_LOG_DISABLED
WTFLogChannel& MediaStreamTrackPrivate::logChannel() const
{
return LogWebRTC;
}
#endif
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM)