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|
/*****************************************************************
|
| AP4 - Segment Builder
|
| Copyright 2002-2014 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_SEGMENT_BUILDER_H_
#define _AP4_SEGMENT_BUILDER_H_
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4Types.h"
#include "../Codecs/Ap4AvcParser.h"
#include "../Codecs/Ap4AdtsParser.h"
#include "Ap4List.h"
#include "Ap4Sample.h"
#include "Ap4String.h"
#include "Ap4Track.h"
/*----------------------------------------------------------------------
| class references
+---------------------------------------------------------------------*/
class AP4_ByteStream;
class AP4_MpegAudioSampleDescription;
/*----------------------------------------------------------------------
| AP4_SegmentBuilder
+---------------------------------------------------------------------*/
class AP4_SegmentBuilder
{
public:
// constructor and destructor
AP4_SegmentBuilder(AP4_Track::Type track_type,
AP4_UI32 track_id,
AP4_UI64 media_time_origin = 0);
virtual ~AP4_SegmentBuilder();
// accessors
AP4_UI32 GetTrackId() { return m_TrackId; }
AP4_UI32 GetTimescale() { return m_Timescale; }
AP4_UI64 GetMediaStartTime() { return m_MediaStartTime; }
AP4_UI64 GetMediaDuration() { return m_MediaDuration; }
AP4_Array<AP4_Sample>& GetSamples() { return m_Samples; }
// methods
virtual AP4_Result AddSample(AP4_Sample& sample);
virtual AP4_Result WriteMediaSegment(AP4_ByteStream& stream, unsigned int sequence_number);
virtual AP4_Result WriteInitSegment(AP4_ByteStream& stream) = 0;
protected:
// methods
AP4_Track::Type m_TrackType;
AP4_UI32 m_TrackId;
AP4_String m_TrackLanguage;
AP4_UI32 m_Timescale;
AP4_UI64 m_SampleStartNumber;
AP4_UI64 m_MediaTimeOrigin;
AP4_UI64 m_MediaStartTime;
AP4_UI64 m_MediaDuration;
AP4_Array<AP4_Sample> m_Samples;
};
/*----------------------------------------------------------------------
| AP4_FeedSegmentBuilder
+---------------------------------------------------------------------*/
class AP4_FeedSegmentBuilder : public AP4_SegmentBuilder
{
public:
// constructor
AP4_FeedSegmentBuilder(AP4_Track::Type track_type,
AP4_UI32 track_id,
AP4_UI64 media_time_origin = 0);
// methods
virtual AP4_Result Feed(const void* data,
AP4_Size data_size,
AP4_Size& bytes_consumed) = 0;
};
/*----------------------------------------------------------------------
| AP4_AvcSegmentBuilder
+---------------------------------------------------------------------*/
class AP4_AvcSegmentBuilder : public AP4_FeedSegmentBuilder
{
public:
// constructor
AP4_AvcSegmentBuilder(AP4_UI32 track_id,
double frames_per_second,
AP4_UI64 media_time_origin = 0);
// AP4_SegmentBuilder methods
virtual AP4_Result WriteMediaSegment(AP4_ByteStream& stream, unsigned int sequence_number);
virtual AP4_Result WriteInitSegment(AP4_ByteStream& stream);
// methods
AP4_Result Feed(const void* data,
AP4_Size data_size,
AP4_Size& bytes_consumed);
protected:
// types
struct SampleOrder {
SampleOrder(AP4_UI32 decode_order, AP4_UI32 display_order) :
m_DecodeOrder(decode_order),
m_DisplayOrder(display_order) {}
AP4_UI32 m_DecodeOrder;
AP4_UI32 m_DisplayOrder;
};
// methods
void SortSamples(SampleOrder* array, unsigned int n);
// members
AP4_AvcFrameParser m_FrameParser;
double m_FramesPerSecond;
AP4_Array<SampleOrder> m_SampleOrders;
};
/*----------------------------------------------------------------------
| AP4_AacSegmentBuilder
+---------------------------------------------------------------------*/
class AP4_AacSegmentBuilder : public AP4_FeedSegmentBuilder
{
public:
// constructor
AP4_AacSegmentBuilder(AP4_UI32 track_id, AP4_UI64 media_time_origin = 0);
~AP4_AacSegmentBuilder();
// AP4_SegmentBuilder methods
virtual AP4_Result WriteInitSegment(AP4_ByteStream& stream);
// methods
AP4_Result Feed(const void* data,
AP4_Size data_size,
AP4_Size& bytes_consumed);
protected:
// members
AP4_AdtsParser m_FrameParser;
AP4_MpegAudioSampleDescription* m_SampleDescription;
};
#endif // _AP4_SEGMENT_BUILDER_H_
|
