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/*
* 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.
*/
#ifndef SourceBuffer_h
#define SourceBuffer_h
#if ENABLE(MEDIA_SOURCE)
#include "ActiveDOMObject.h"
#include "AudioTrack.h"
#include "EventTarget.h"
#include "ExceptionCode.h"
#include "GenericEventQueue.h"
#include "ScriptWrappable.h"
#include "SourceBufferPrivateClient.h"
#include "TextTrack.h"
#include "Timer.h"
#include "VideoTrack.h"
#include <runtime/ArrayBufferView.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class AudioTrackList;
class MediaSource;
class SourceBufferPrivate;
class TextTrackList;
class TimeRanges;
class VideoTrackList;
class SourceBuffer final : public RefCounted<SourceBuffer>, public ActiveDOMObject, public EventTargetWithInlineData, public ScriptWrappable, public SourceBufferPrivateClient, public AudioTrackClient, public VideoTrackClient, public TextTrackClient {
public:
static PassRef<SourceBuffer> create(PassRef<SourceBufferPrivate>, MediaSource*);
virtual ~SourceBuffer();
// SourceBuffer.idl methods
bool updating() const { return m_updating; }
PassRefPtr<TimeRanges> buffered(ExceptionCode&) const;
const RefPtr<TimeRanges>& buffered() const;
double timestampOffset() const;
void setTimestampOffset(double, ExceptionCode&);
void appendBuffer(PassRefPtr<ArrayBuffer> data, ExceptionCode&);
void appendBuffer(PassRefPtr<ArrayBufferView> data, ExceptionCode&);
void abort(ExceptionCode&);
void abortIfUpdating();
void removedFromMediaSource();
const MediaTime& highestPresentationEndTimestamp() const { return m_highestPresentationEndTimestamp; }
#if ENABLE(VIDEO_TRACK)
VideoTrackList* videoTracks();
AudioTrackList* audioTracks();
TextTrackList* textTracks();
#endif
// ActiveDOMObject interface
virtual bool hasPendingActivity() const override;
virtual void stop() override;
// EventTarget interface
virtual ScriptExecutionContext* scriptExecutionContext() const override { return ActiveDOMObject::scriptExecutionContext(); }
virtual EventTargetInterface eventTargetInterface() const override { return SourceBufferEventTargetInterfaceType; }
using RefCounted<SourceBuffer>::ref;
using RefCounted<SourceBuffer>::deref;
protected:
// EventTarget interface
virtual void refEventTarget() override { ref(); }
virtual void derefEventTarget() override { deref(); }
private:
SourceBuffer(PassRef<SourceBufferPrivate>, MediaSource*);
// SourceBufferPrivateClient
virtual void sourceBufferPrivateDidEndStream(SourceBufferPrivate*, const WTF::AtomicString&) override;
virtual void sourceBufferPrivateDidReceiveInitializationSegment(SourceBufferPrivate*, const InitializationSegment&) override;
virtual void sourceBufferPrivateDidReceiveSample(SourceBufferPrivate*, PassRefPtr<MediaSample>) override;
virtual bool sourceBufferPrivateHasAudio(const SourceBufferPrivate*) const override;
virtual bool sourceBufferPrivateHasVideo(const SourceBufferPrivate*) const override;
virtual void sourceBufferPrivateDidBecomeReadyForMoreSamples(SourceBufferPrivate*, AtomicString trackID) override;
virtual void sourceBufferPrivateSeekToTime(SourceBufferPrivate*, const MediaTime&);
virtual MediaTime sourceBufferPrivateFastSeekTimeForMediaTime(SourceBufferPrivate*, const MediaTime&, const MediaTime& negativeThreshold, const MediaTime& positiveThreshold);
// AudioTrackClient
virtual void audioTrackEnabledChanged(AudioTrack*) override;
// VideoTrackClient
virtual void videoTrackSelectedChanged(VideoTrack*) override;
// TextTrackClient
virtual void textTrackKindChanged(TextTrack*) override;
virtual void textTrackModeChanged(TextTrack*) override;
virtual void textTrackAddCues(TextTrack*, const TextTrackCueList*) override;
virtual void textTrackRemoveCues(TextTrack*, const TextTrackCueList*) override;
virtual void textTrackAddCue(TextTrack*, PassRefPtr<TextTrackCue>) override;
virtual void textTrackRemoveCue(TextTrack*, PassRefPtr<TextTrackCue>) override;
static const WTF::AtomicString& decodeError();
static const WTF::AtomicString& networkError();
bool isRemoved() const;
void scheduleEvent(const AtomicString& eventName);
void appendBufferInternal(unsigned char*, unsigned, ExceptionCode&);
void appendBufferTimerFired(Timer<SourceBuffer>&);
void setActive(bool);
bool validateInitializationSegment(const InitializationSegment&);
struct TrackBuffer;
void provideMediaData(TrackBuffer&, AtomicString trackID);
void didDropSample();
RefPtr<SourceBufferPrivate> m_private;
MediaSource* m_source;
GenericEventQueue m_asyncEventQueue;
bool m_updating;
Vector<unsigned char> m_pendingAppendData;
Timer<SourceBuffer> m_appendBufferTimer;
RefPtr<VideoTrackList> m_videoTracks;
RefPtr<AudioTrackList> m_audioTracks;
RefPtr<TextTrackList> m_textTracks;
Vector<AtomicString> m_videoCodecs;
Vector<AtomicString> m_audioCodecs;
Vector<AtomicString> m_textCodecs;
MediaTime m_timestampOffset;
MediaTime m_highestPresentationEndTimestamp;
HashMap<AtomicString, TrackBuffer> m_trackBufferMap;
bool m_receivedFirstInitializationSegment;
RefPtr<TimeRanges> m_buffered;
bool m_active;
enum AppendStateType { WaitingForSegment, ParsingInitSegment, ParsingMediaSegment };
AppendStateType m_appendState;
};
} // namespace WebCore
#endif
#endif
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