/usr/include/mjpegtools/mplex/videostrm.hpp is in libmjpegtools-dev 1:2.1.0+debian-2.1.
This file is owned by root:root, with mode 0o644.
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* videostrm.hpp: Video stream elementary input stream
*
* Copyright (C) 2001 Andrew Stevens <andrew.stevens@philips.com>
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public License
* as published by the Free Software Foundation.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __VIDEOSTRM_H__
#define __VIDEOSTRM_H__
#include "inputstrm.hpp"
#include "interact.hpp"
#include "stream_params.hpp"
class VideoStream : public ElementaryStream
{
public:
VideoStream(IBitStream &ibs, VideoParams *parms,
Multiplexor &into);
void Init( const int stream_num );
static bool Probe(IBitStream &bs );
void Close();
inline int DecoderOrder() { return au->dorder; }
inline int AUType() { return au->type; }
bool SeqEndRunOut();
const AUnit *NextIFrame();
inline int NextAUType()
{
AUnit *p_au = Lookahead();
if( p_au != 0 )
return p_au->type;
else
return NOFRAME;
}
virtual unsigned int NominalBitRate()
{
return bit_rate * 400;
}
virtual void OutputGOPControlSector();
bool RunOutComplete();
virtual bool MuxPossible(clockticks currentSCR);
virtual void AUMuxed( bool first_in_sector ) ;
void SetMaxStdBufferDelay( unsigned int demux_rate );
void OutputSector();
inline double FrameRate() const { return frame_rate; }
protected:
static const unsigned int MAX_GOP_LENGTH = 128;
void OutputSeqhdrInfo();
virtual void FillAUbuffer(unsigned int frames_to_buffer);
virtual void NextDTSPTS( );
void ScanFirstSeqHeader();
uint8_t NewAUTimestamps( int AUtype );
bool NewAUBuffers( int AUtype );
unsigned int ExcludeNextIFramePayload();
public:
unsigned int num_sequence ;
unsigned int num_seq_end ;
unsigned int num_pictures ;
unsigned int num_groups ;
unsigned int num_frames[4] ;
int64_t avg_frames[4] ;
unsigned int horizontal_size;
unsigned int vertical_size ;
unsigned int aspect_ratio ;
unsigned int picture_rate ;
unsigned int bit_rate ;
unsigned int vbv_buffer_size;
unsigned int CSPF ;
double secs_per_frame;
bool dtspts_for_all_au; // Ensure every AU has a timestamp
// (no two AU can start in one sector)
bool gop_control_packet;
protected:
/* State variables for scanning source bit-stream */
AUnit access_unit;
int fields_presented;
int group_start_pic;
int group_start_field;
int group_start_SCR;
int temporal_reference;
unsigned int pict_struct;
int pulldown_32;
int repeat_first_field;
int prev_temp_ref;
int ref_present;
int prev_ref_present;
double frame_rate;
double max_bits_persec;
int AU_pict_data;
int AU_hdr;
clockticks max_STD_buffer_delay;
VideoParams *parms;
};
//
// DVD's generate control sectors for each GOP...
//
class DVDVideoStream : public VideoStream
{
public:
DVDVideoStream(IBitStream &ibs,VideoParams *parms,Multiplexor &into) :
VideoStream( ibs, parms, into )
{
gop_control_packet = true;
}
void OutputGOPControlSector();
};
#endif // __INPUTSTRM_H__
/*
* Local variables:
* c-file-style: "stroustrup"
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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