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|
/*****************************************************************
|
| AP4 - Hint Track Reader
|
| Copyright 2002-2008 Axiomatic Systems, LLC
|
|
| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
|
| Unless you have obtained Bento4 under a difference license,
| this version of Bento4 is Bento4|GPL.
| Bento4|GPL is free software; you can redistribute it and/or modify
| it under the terms of the GNU General Public License as published by
| the Free Software Foundation; either version 2, or (at your option)
| any later version.
|
| Bento4|GPL is distributed in the hope that it will be useful,
| but WITHOUT ANY WARRANTY; without even the implied warranty of
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
| GNU General Public License for more details.
|
| You should have received a copy of the GNU General Public License
| along with Bento4|GPL; see the file COPYING. If not, write to the
| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
| 02111-1307, USA.
|
****************************************************************/
#ifndef _AP4_HINT_TRACK_READER_H_
#define _AP4_HINT_TRACK_READER_H_
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4Types.h"
#include "Ap4Sample.h"
/*----------------------------------------------------------------------
| class declarations
+---------------------------------------------------------------------*/
class AP4_DataBuffer;
class AP4_Movie;
class AP4_Track;
class AP4_RtpSampleData;
class AP4_RtpPacket;
class AP4_ImmediateRtpConstructor;
class AP4_SampleRtpConstructor;
class AP4_String;
/*----------------------------------------------------------------------
| AP4_HintTrackReader
+---------------------------------------------------------------------*/
class AP4_HintTrackReader
{
public:
// constructor and destructor
static AP4_Result Create(AP4_Track& hint_track,
AP4_Movie& movie,
AP4_UI32 ssrc, // if 0, a random value is chosen
AP4_HintTrackReader*& reader);
~AP4_HintTrackReader();
// methods
AP4_Result GetNextPacket(AP4_DataBuffer& packet,
AP4_UI32& ts_ms);
AP4_Result SeekToTimeStampMs(AP4_UI32 desired_ts_ms,
AP4_UI32& actual_ts_ms);
AP4_UI32 GetCurrentTimeStampMs();
AP4_Result Rewind();
AP4_Result GetSdpText(AP4_String& sdp);
AP4_Track* GetMediaTrack() { return m_MediaTrack; }
private:
// use the factory instead of the constructor
AP4_HintTrackReader(AP4_Track& hint_track,
AP4_Movie& movie,
AP4_UI32 ssrc);
// methods
AP4_Result GetRtpSample(AP4_Ordinal index);
AP4_Result BuildRtpPacket(AP4_RtpPacket* packet,
AP4_DataBuffer& packet_data);
AP4_Result WriteImmediateRtpData(AP4_ImmediateRtpConstructor* constructor,
AP4_ByteStream* data_stream);
AP4_Result WriteSampleRtpData(AP4_SampleRtpConstructor* constructor,
AP4_ByteStream* data_stream);
// members
AP4_Track& m_HintTrack;
AP4_Track* m_MediaTrack;
AP4_UI32 m_MediaTimeScale;
AP4_Sample m_CurrentHintSample;
AP4_RtpSampleData* m_RtpSampleData;
AP4_UI32 m_Ssrc;
AP4_Ordinal m_SampleIndex;
AP4_Ordinal m_PacketIndex;
AP4_UI16 m_RtpSequenceStart;
AP4_UI32 m_RtpTimeStampStart;
AP4_UI32 m_RtpTimeScale;
};
#endif // _AP4_HINT_TRACK_READER_H_
|
