gecko-dev/content/media/dash/DASHRepReader.h

69 lines
2.4 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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/. */
/* DASH - Dynamic Adaptive Streaming over HTTP
*
* DASH is an adaptive bitrate streaming technology where a multimedia file is
* partitioned into one or more segments and delivered to a client using HTTP.
*
* see DASHDecoder.cpp for comments on DASH object interaction
*/
#if !defined(DASHRepReader_h_)
#define DASHRepReader_h_
#include "VideoUtils.h"
#include "MediaDecoderReader.h"
#include "DASHReader.h"
namespace mozilla {
class DASHReader;
class DASHRepReader : public MediaDecoderReader
{
public:
DASHRepReader(AbstractMediaDecoder* aDecoder)
: MediaDecoderReader(aDecoder) { }
virtual ~DASHRepReader() { }
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(DASHRepReader)
virtual void SetMainReader(DASHReader *aMainReader) = 0;
// Sets range for initialization bytes; used by DASH.
virtual void SetInitByteRange(MediaByteRange &aByteRange) = 0;
// Sets range for index frame bytes; used by DASH.
virtual void SetIndexByteRange(MediaByteRange &aByteRange) = 0;
// Returns the index of the subsegment which contains the seek time (usecs).
virtual int64_t GetSubsegmentForSeekTime(int64_t aSeekToTime) = 0;
// Returns list of ranges for index frame start/end offsets. Used by DASH.
virtual nsresult GetSubsegmentByteRanges(nsTArray<MediaByteRange>& aByteRanges) = 0;
// Returns true if the reader has reached a DASH switch access point.
virtual bool HasReachedSubsegment(uint32_t aSubsegmentIndex) = 0;
// Requests a seek to the start of a particular DASH subsegment.
virtual void RequestSeekToSubsegment(uint32_t aIdx) = 0;
// Reader should stop reading at the start of the specified subsegment, and
// should prepare for the next reader to add data to the video queue.
// Should be implemented by a sub-reader, e.g. |nsDASHWebMReader|.
virtual void RequestSwitchAtSubsegment(int32_t aCluster,
MediaDecoderReader* aNextReader) = 0;
// Returns true if data at the end of the final subsegment has been cached.
virtual bool IsDataCachedAtEndOfSubsegments() = 0;
};
}// namespace mozilla
#endif /*DASHRepReader*/