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Diffstat (limited to '')
| -rw-r--r-- | dom/media/mediasource/SourceBuffer.h | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/dom/media/mediasource/SourceBuffer.h b/dom/media/mediasource/SourceBuffer.h new file mode 100644 index 0000000000..6155952acf --- /dev/null +++ b/dom/media/mediasource/SourceBuffer.h @@ -0,0 +1,207 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef mozilla_dom_SourceBuffer_h_ +#define mozilla_dom_SourceBuffer_h_ + +#include "mozilla/MozPromise.h" +#include "MediaContainerType.h" +#include "MediaSource.h" +#include "js/RootingAPI.h" +#include "mozilla/Assertions.h" +#include "mozilla/Atomics.h" +#include "mozilla/Attributes.h" +#include "mozilla/DOMEventTargetHelper.h" +#include "mozilla/UniquePtr.h" +#include "mozilla/dom/SourceBufferBinding.h" +#include "mozilla/dom/TypedArray.h" +#include "mozilla/mozalloc.h" +#include "nsCOMPtr.h" +#include "nsCycleCollectionNoteChild.h" +#include "nsCycleCollectionParticipant.h" +#include "nsISupports.h" +#include "nscore.h" +#include "TrackBuffersManager.h" +#include "SourceBufferTask.h" + +class JSObject; +struct JSContext; + +namespace mozilla { + +class AbstractThread; +class ErrorResult; +class MediaByteBuffer; +template <typename T> +class AsyncEventRunner; + +DDLoggedTypeName(dom::SourceBuffer); + +namespace dom { + +class TimeRanges; + +class SourceBuffer final : public DOMEventTargetHelper, + public DecoderDoctorLifeLogger<SourceBuffer> { + public: + /** WebIDL Methods. */ + SourceBufferAppendMode Mode() const { + return mCurrentAttributes.GetAppendMode(); + } + + void SetMode(SourceBufferAppendMode aMode, ErrorResult& aRv); + + bool Updating() const { return mUpdating; } + + TimeRanges* GetBuffered(ErrorResult& aRv); + media::TimeIntervals GetTimeIntervals(); + + double TimestampOffset() const { + return mCurrentAttributes.GetApparentTimestampOffset(); + } + + void SetTimestampOffset(double aTimestampOffset, ErrorResult& aRv); + + double AppendWindowStart() const { + return mCurrentAttributes.GetAppendWindowStart(); + } + + void SetAppendWindowStart(double aAppendWindowStart, ErrorResult& aRv); + + double AppendWindowEnd() const { + return mCurrentAttributes.GetAppendWindowEnd(); + } + + void SetAppendWindowEnd(double aAppendWindowEnd, ErrorResult& aRv); + + void AppendBuffer(const ArrayBuffer& aData, ErrorResult& aRv); + void AppendBuffer(const ArrayBufferView& aData, ErrorResult& aRv); + + already_AddRefed<Promise> AppendBufferAsync(const ArrayBuffer& aData, + ErrorResult& aRv); + already_AddRefed<Promise> AppendBufferAsync(const ArrayBufferView& aData, + ErrorResult& aRv); + + void Abort(ErrorResult& aRv); + void AbortBufferAppend(); + + void Remove(double aStart, double aEnd, ErrorResult& aRv); + + already_AddRefed<Promise> RemoveAsync(double aStart, double aEnd, + ErrorResult& aRv); + + void ChangeType(const nsAString& aType, ErrorResult& aRv); + + IMPL_EVENT_HANDLER(updatestart); + IMPL_EVENT_HANDLER(update); + IMPL_EVENT_HANDLER(updateend); + IMPL_EVENT_HANDLER(error); + IMPL_EVENT_HANDLER(abort); + + /** End WebIDL Methods. */ + + NS_DECL_ISUPPORTS_INHERITED + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SourceBuffer, DOMEventTargetHelper) + + SourceBuffer(MediaSource* aMediaSource, const MediaContainerType& aType); + + MediaSource* GetParentObject() const; + + JSObject* WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) override; + + // Notify the SourceBuffer that it has been detached from the + // MediaSource's sourceBuffer list. + void Detach(); + bool IsAttached() const { return mMediaSource != nullptr; } + + void Ended(); + + media::TimeIntervals GetBufferedIntervals(); + media::TimeUnit GetBufferedEnd(); + media::TimeUnit HighestStartTime(); + media::TimeUnit HighestEndTime(); + + // Runs the range removal algorithm as defined by the MSE spec. + void RangeRemoval(double aStart, double aEnd); + + bool IsActive() const { return mActive; } + + private: + ~SourceBuffer(); + + friend class AsyncEventRunner<SourceBuffer>; + friend class BufferAppendRunnable; + friend class mozilla::TrackBuffersManager; + void DispatchSimpleEvent(const char* aName); + void QueueAsyncSimpleEvent(const char* aName); + + // Update mUpdating and fire the appropriate events. + void StartUpdating(); + void StopUpdating(); + void AbortUpdating(); + void ResetParserState(); + + // If the media segment contains data beyond the current duration, + // then run the duration change algorithm with new duration set to the + // maximum of the current duration and the group end timestamp. + void CheckEndTime(); + + // Shared implementation of AppendBuffer overloads. + void AppendData(const uint8_t* aData, uint32_t aLength, ErrorResult& aRv); + // Shared implementation of AppendBufferAsync overloads. + already_AddRefed<Promise> AppendDataAsync(const uint8_t* aData, + uint32_t aLength, ErrorResult& aRv); + + void PrepareRemove(double aStart, double aEnd, ErrorResult& aRv); + + // Implement the "Append Error Algorithm". + // Will call endOfStream() with "decode" error if aDecodeError is true. + // 3.5.3 Append Error Algorithm + // http://w3c.github.io/media-source/#sourcebuffer-append-error + void AppendError(const MediaResult& aDecodeError); + + // Implements the "Prepare Append Algorithm". Returns MediaByteBuffer object + // on success or nullptr (with aRv set) on error. + already_AddRefed<MediaByteBuffer> PrepareAppend(const uint8_t* aData, + uint32_t aLength, + ErrorResult& aRv); + + void AppendDataCompletedWithSuccess( + const SourceBufferTask::AppendBufferResult& aResult); + void AppendDataErrored(const MediaResult& aError); + + RefPtr<MediaSource> mMediaSource; + const RefPtr<AbstractThread> mAbstractMainThread; + + RefPtr<TrackBuffersManager> mTrackBuffersManager; + SourceBufferAttributes mCurrentAttributes; + + bool mUpdating; + + mozilla::Atomic<bool> mActive; + + MozPromiseRequestHolder<SourceBufferTask::AppendPromise> mPendingAppend; + MozPromiseRequestHolder<SourceBufferTask::RangeRemovalPromise> + mPendingRemoval; + MediaContainerType mType; + + RefPtr<TimeRanges> mBuffered; + + MozPromiseRequestHolder<MediaSource::ActiveCompletionPromise> + mCompletionPromise; + + // Only used if MSE v2 experimental mode is active. + // Contains the current Promise to be resolved following use of + // appendBufferAsync and removeAsync. Not set of no operation is pending. + RefPtr<Promise> mDOMPromise; +}; + +} // namespace dom + +} // namespace mozilla + +#endif /* mozilla_dom_SourceBuffer_h_ */ |