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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
* Copyright (C) 2013-2020 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:
*
* * 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.
*/
#pragma once
#if ENABLE(MEDIA_SOURCE)
#include "MediaDescription.h"
#include "MediaPlayer.h"
#include "MediaSample.h"
#include "PlatformTimeRanges.h"
#include "SampleMap.h"
#include "SourceBufferPrivateClient.h"
#include "TimeRanges.h"
#include <wtf/HashMap.h>
#include <wtf/Logger.h>
#include <wtf/LoggerHelper.h>
#include <wtf/Ref.h>
#include <wtf/RobinHoodHashMap.h>
#include <wtf/UniqueRef.h>
#include <wtf/WeakPtr.h>
#include <wtf/text/AtomStringHash.h>
namespace WebCore {
class SharedBuffer;
class TrackBuffer;
class TimeRanges;
enum class SourceBufferAppendMode : uint8_t {
Segments,
Sequence
};
class SourceBufferPrivate
: public RefCounted<SourceBufferPrivate>
#if !RELEASE_LOG_DISABLED
, public LoggerHelper
#endif
{
public:
WEBCORE_EXPORT SourceBufferPrivate();
WEBCORE_EXPORT virtual ~SourceBufferPrivate();
virtual void setActive(bool) = 0;
WEBCORE_EXPORT virtual void append(Ref<SharedBuffer>&&);
virtual void abort() = 0;
virtual void resetParserState() = 0;
virtual void removedFromMediaSource() = 0;
virtual MediaPlayer::ReadyState readyState() const = 0;
virtual void setReadyState(MediaPlayer::ReadyState) = 0;
virtual bool canSwitchToType(const ContentType&) { return false; }
WEBCORE_EXPORT virtual void setMediaSourceEnded(bool);
virtual void setMode(SourceBufferAppendMode mode) { m_appendMode = mode; }
WEBCORE_EXPORT virtual void reenqueueMediaIfNeeded(const MediaTime& currentMediaTime);
WEBCORE_EXPORT virtual void addTrackBuffer(const AtomString& trackId, RefPtr<MediaDescription>&&);
WEBCORE_EXPORT virtual void resetTrackBuffers();
WEBCORE_EXPORT virtual void clearTrackBuffers();
WEBCORE_EXPORT virtual void setAllTrackBuffersNeedRandomAccess();
virtual void setGroupStartTimestamp(const MediaTime& mediaTime) { m_groupStartTimestamp = mediaTime; }
virtual void setGroupStartTimestampToEndTimestamp() { m_groupStartTimestamp = m_groupEndTimestamp; }
virtual void setShouldGenerateTimestamps(bool flag) { m_shouldGenerateTimestamps = flag; }
WEBCORE_EXPORT virtual void updateBufferedFromTrackBuffers(bool sourceIsEnded);
WEBCORE_EXPORT virtual void removeCodedFrames(const MediaTime& start, const MediaTime& end, const MediaTime& currentMediaTime, bool isEnded, CompletionHandler<void()>&& = [] { });
WEBCORE_EXPORT virtual void evictCodedFrames(uint64_t newDataSize, uint64_t maximumBufferSize, const MediaTime& currentTime, bool isEnded);
WEBCORE_EXPORT virtual uint64_t totalTrackBufferSizeInBytes() const;
WEBCORE_EXPORT virtual void resetTimestampOffsetInTrackBuffers();
virtual void startChangingType() { m_pendingInitializationSegmentForChangeType = true; }
virtual void setTimestampOffset(const MediaTime& timestampOffset) { m_timestampOffset = timestampOffset; }
virtual void setAppendWindowStart(const MediaTime& appendWindowStart) { m_appendWindowStart = appendWindowStart;}
virtual void setAppendWindowEnd(const MediaTime& appendWindowEnd) { m_appendWindowEnd = appendWindowEnd; }
WEBCORE_EXPORT virtual void seekToTime(const MediaTime&);
WEBCORE_EXPORT virtual void updateTrackIds(Vector<std::pair<AtomString, AtomString>>&& trackIdPairs);
WEBCORE_EXPORT void setClient(SourceBufferPrivateClient*);
void setIsAttached(bool flag) { m_isAttached = flag; }
const TimeRanges* buffered() const { return m_buffered.get(); }
bool isBufferFullFor(uint64_t requiredSize, uint64_t maximumBufferSize);
// Methods used by MediaSourcePrivate
bool hasAudio() const { return m_hasAudio; }
bool hasVideo() const { return m_hasVideo; }
MediaTime timestampOffset() const { return m_timestampOffset; }
virtual size_t platformMaximumBufferSize() const { return 0; }
// Internals Utility methods
WEBCORE_EXPORT virtual void bufferedSamplesForTrackId(const AtomString&, CompletionHandler<void(Vector<String>&&)>&&);
WEBCORE_EXPORT virtual void enqueuedSamplesForTrackID(const AtomString&, CompletionHandler<void(Vector<String>&&)>&&);
virtual MediaTime minimumUpcomingPresentationTimeForTrackID(const AtomString&) { return MediaTime::invalidTime(); }
virtual void setMaximumQueueDepthForTrackID(const AtomString&, uint64_t) { }
WEBCORE_EXPORT MediaTime fastSeekTimeForMediaTime(const MediaTime& targetTime, const MediaTime& negativeThreshold, const MediaTime& positiveThreshold);
#if !RELEASE_LOG_DISABLED
virtual const Logger& sourceBufferLogger() const = 0;
virtual const void* sourceBufferLogIdentifier() = 0;
#endif
protected:
// The following method should never be called directly and be overridden instead.
WEBCORE_EXPORT virtual void append(Vector<unsigned char>&&);
virtual MediaTime timeFudgeFactor() const { return { 2002, 24000 }; }
virtual bool isActive() const { return false; }
virtual bool isSeeking() const { return false; }
virtual MediaTime currentMediaTime() const { return { }; }
virtual MediaTime duration() const { return { }; }
virtual void flush(const AtomString&) { }
virtual void enqueueSample(Ref<MediaSample>&&, const AtomString&) { }
virtual void allSamplesInTrackEnqueued(const AtomString&) { }
virtual bool isReadyForMoreSamples(const AtomString&) { return false; }
virtual void notifyClientWhenReadyForMoreSamples(const AtomString&) { }
virtual bool canSetMinimumUpcomingPresentationTime(const AtomString&) const { return false; }
virtual void setMinimumUpcomingPresentationTime(const AtomString&, const MediaTime&) { }
virtual void clearMinimumUpcomingPresentationTime(const AtomString&) { }
void reenqueSamples(const AtomString& trackID);
WEBCORE_EXPORT void didReceiveInitializationSegment(SourceBufferPrivateClient::InitializationSegment&&, CompletionHandler<void(SourceBufferPrivateClient::ReceiveResult)>&&);
WEBCORE_EXPORT void didReceiveSample(Ref<MediaSample>&&);
WEBCORE_EXPORT void setBufferedRanges(const PlatformTimeRanges&);
void provideMediaData(const AtomString& trackID);
// Must be called once all samples have been processed.
WEBCORE_EXPORT void appendCompleted(bool parsingSucceeded, bool isEnded);
WeakPtr<SourceBufferPrivateClient> m_client;
private:
void updateHighestPresentationTimestamp();
void updateMinimumUpcomingPresentationTime(TrackBuffer&, const AtomString& trackID);
void reenqueueMediaForTime(TrackBuffer&, const AtomString& trackID, const MediaTime&);
bool validateInitializationSegment(const SourceBufferPrivateClient::InitializationSegment&);
void provideMediaData(TrackBuffer&, const AtomString& trackID);
void setBufferedDirty(bool);
void trySignalAllSamplesInTrackEnqueued(TrackBuffer&, const AtomString& trackID);
MediaTime findPreviousSyncSamplePresentationTime(const MediaTime&);
bool m_isAttached { false };
bool m_hasAudio { false };
bool m_hasVideo { false };
MemoryCompactRobinHoodHashMap<AtomString, UniqueRef<TrackBuffer>> m_trackBufferMap;
SourceBufferAppendMode m_appendMode { SourceBufferAppendMode::Segments };
bool m_shouldGenerateTimestamps { false };
bool m_receivedFirstInitializationSegment { false };
bool m_pendingInitializationSegmentForChangeType { false };
bool m_didReceiveSampleErrored { false };
MediaTime m_timestampOffset;
MediaTime m_appendWindowStart { MediaTime::zeroTime() };
MediaTime m_appendWindowEnd { MediaTime::positiveInfiniteTime() };
MediaTime m_highestPresentationTimestamp;
MediaTime m_groupStartTimestamp { MediaTime::invalidTime() };
MediaTime m_groupEndTimestamp { MediaTime::zeroTime() };
bool m_isMediaSourceEnded { false };
RefPtr<TimeRanges> m_buffered;
};
} // namespace WebCore
namespace WTF {
template<> struct EnumTraits<WebCore::SourceBufferAppendMode> {
using values = EnumValues<
WebCore::SourceBufferAppendMode,
WebCore::SourceBufferAppendMode::Segments,
WebCore::SourceBufferAppendMode::Sequence
>;
};
}; // namespace WTF
#endif
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