gecko/dom/media/mediasource/SourceBuffer.h

153 lines
3.6 KiB
C++

/* -*- 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 "MediaSource.h"
#include "js/RootingAPI.h"
#include "mozilla/Assertions.h"
#include "mozilla/Attributes.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/dom/SourceBufferBinding.h"
#include "mozilla/dom/TypedArray.h"
#include "mozilla/mozalloc.h"
#include "nsAutoPtr.h"
#include "nsCOMPtr.h"
#include "nsCycleCollectionNoteChild.h"
#include "nsCycleCollectionParticipant.h"
#include "nsISupports.h"
#include "nsString.h"
#include "nscore.h"
class JSObject;
struct JSContext;
namespace mozilla {
class ErrorResult;
class TrackBuffer;
template <typename T> class AsyncEventRunner;
namespace dom {
class TimeRanges;
class SourceBuffer MOZ_FINAL : public DOMEventTargetHelper
{
public:
/** WebIDL Methods. */
SourceBufferAppendMode Mode() const
{
return mAppendMode;
}
void SetMode(SourceBufferAppendMode aMode, ErrorResult& aRv);
bool Updating() const
{
return mUpdating;
}
already_AddRefed<TimeRanges> GetBuffered(ErrorResult& aRv);
double TimestampOffset() const
{
return mTimestampOffset;
}
void SetTimestampOffset(double aTimestampOffset, ErrorResult& aRv);
double AppendWindowStart() const
{
return mAppendWindowStart;
}
void SetAppendWindowStart(double aAppendWindowStart, ErrorResult& aRv);
double AppendWindowEnd() const
{
return mAppendWindowEnd;
}
void SetAppendWindowEnd(double aAppendWindowEnd, ErrorResult& aRv);
void AppendBuffer(const ArrayBuffer& aData, ErrorResult& aRv);
void AppendBuffer(const ArrayBufferView& aData, ErrorResult& aRv);
void Abort(ErrorResult& aRv);
void Remove(double aStart, double aEnd, ErrorResult& aRv);
/** End WebIDL Methods. */
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SourceBuffer, DOMEventTargetHelper)
SourceBuffer(MediaSource* aMediaSource, const nsACString& aType);
MediaSource* GetParentObject() const;
JSObject* WrapObject(JSContext* aCx) MOZ_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();
// Evict data in the source buffer in the given time range.
void Evict(double aStart, double aEnd);
double GetBufferedStart();
double GetBufferedEnd();
#if defined(DEBUG)
void Dump(const char* aPath);
#endif
private:
~SourceBuffer();
friend class AsyncEventRunner<SourceBuffer>;
void DispatchSimpleEvent(const char* aName);
void QueueAsyncSimpleEvent(const char* aName);
// Update mUpdating and fire the appropriate events.
void StartUpdating();
void StopUpdating();
void AbortUpdating();
// Shared implementation of AppendBuffer overloads.
void AppendData(const uint8_t* aData, uint32_t aLength, ErrorResult& aRv);
// Implements the "Prepare Append Algorithm". Returns true if the append
// may continue, or false (with aRv set) on error.
bool PrepareAppend(ErrorResult& aRv);
nsRefPtr<MediaSource> mMediaSource;
uint32_t mEvictionThreshold;
nsRefPtr<TrackBuffer> mTrackBuffer;
double mAppendWindowStart;
double mAppendWindowEnd;
double mTimestampOffset;
SourceBufferAppendMode mAppendMode;
bool mUpdating;
};
} // namespace dom
} // namespace mozilla
#endif /* mozilla_dom_SourceBuffer_h_ */