mirror of
https://github.com/classilla/tenfourfox.git
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118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_SOURCEBUFFERCONTENTMANAGER_H_
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#define MOZILLA_SOURCEBUFFERCONTENTMANAGER_H_
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#include "mozilla/MozPromise.h"
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#include "MediaData.h"
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#include "MediaSourceDecoder.h"
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#include "TimeUnits.h"
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#include "nsString.h"
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namespace mozilla {
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namespace dom {
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class SourceBuffer;
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class SourceBufferAttributes;
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}
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class SourceBufferContentManager {
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(SourceBufferContentManager);
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typedef MozPromise<bool, nsresult, /* IsExclusive = */ true> AppendPromise;
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typedef AppendPromise RangeRemovalPromise;
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static already_AddRefed<SourceBufferContentManager>
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CreateManager(dom::SourceBufferAttributes* aAttributes,
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MediaSourceDecoder* aParentDecoder,
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const nsACString& aType);
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// Add data to the end of the input buffer.
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// Returns false if the append failed.
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virtual bool
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AppendData(MediaByteBuffer* aData, media::TimeUnit aTimestampOffset) = 0;
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// Run MSE Buffer Append Algorithm
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// 3.5.5 Buffer Append Algorithm.
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// http://w3c.github.io/media-source/index.html#sourcebuffer-buffer-append
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virtual RefPtr<AppendPromise> BufferAppend() = 0;
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// Abort any pending AppendData.
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virtual void AbortAppendData() = 0;
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// Run MSE Reset Parser State Algorithm.
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// 3.5.2 Reset Parser State
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// http://w3c.github.io/media-source/#sourcebuffer-reset-parser-state
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virtual void ResetParserState() = 0;
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// Runs MSE range removal algorithm.
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// http://w3c.github.io/media-source/#sourcebuffer-coded-frame-removal
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virtual RefPtr<RangeRemovalPromise> RangeRemoval(media::TimeUnit aStart,
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media::TimeUnit aEnd) = 0;
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enum class EvictDataResult : int8_t
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{
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NO_DATA_EVICTED,
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DATA_EVICTED,
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CANT_EVICT,
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BUFFER_FULL,
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};
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// Evicts data up to aPlaybackTime. aThreshold is used to
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// bound the data being evicted. It will not evict more than aThreshold
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// bytes. aBufferStartTime contains the new start time of the data after the
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// eviction.
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virtual EvictDataResult
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EvictData(media::TimeUnit aPlaybackTime,
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uint32_t aThreshold,
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media::TimeUnit* aBufferStartTime) = 0;
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// Evicts data up to aTime.
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virtual void EvictBefore(media::TimeUnit aTime) = 0;
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// Returns the buffered range currently managed.
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// This may be called on any thread.
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// Buffered must conform to http://w3c.github.io/media-source/index.html#widl-SourceBuffer-buffered
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virtual media::TimeIntervals Buffered() = 0;
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// Return the size of the data managed by this SourceBufferContentManager.
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virtual int64_t GetSize() = 0;
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// Indicate that the MediaSource parent object got into "ended" state.
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virtual void Ended() = 0;
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// The parent SourceBuffer is about to be destroyed.
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virtual void Detach() = 0;
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// Current state as per Segment Parser Loop Algorithm
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// http://w3c.github.io/media-source/index.html#sourcebuffer-segment-parser-loop
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enum class AppendState : int32_t
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{
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WAITING_FOR_SEGMENT,
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PARSING_INIT_SEGMENT,
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PARSING_MEDIA_SEGMENT,
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};
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virtual AppendState GetAppendState()
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{
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return AppendState::WAITING_FOR_SEGMENT;
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}
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virtual void SetGroupStartTimestamp(const media::TimeUnit& aGroupStartTimestamp) {}
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virtual void RestartGroupStartTimestamp() {}
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virtual media::TimeUnit GroupEndTimestamp() = 0;
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protected:
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virtual ~SourceBufferContentManager() { }
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};
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} // namespace mozilla
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#endif /* MOZILLA_SOURCEBUFFERCONTENTMANAGER_H_ */
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