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/*
* videostrm.hh: 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.hh"
class VideoStream:public ElementaryStream
{
public:
VideoStream (IBitStream & ibs, OutputStream & into);
void Init (const int stream_num);
static bool Probe (IBitStream & bs);
void Close ();
inline int AUType ()
{
return au->type;
}
inline bool EndSeq ()
{
return au->end_seq;
}
inline int NextAUType ()
{
VAunit *p_au = Lookahead ();
if (p_au != NULL)
return p_au->type;
else
return NOFRAME;
}
inline bool SeqHdrNext ()
{
VAunit *p_au = Lookahead ();
return p_au != NULL && p_au->seq_header;
}
virtual unsigned int NominalBitRate ()
{
return bit_rate * 50;
}
virtual void OutputGOPControlSector ();
bool RunOutComplete ();
virtual bool MuxPossible (clockticks currentSCR);
void SetMaxStdBufferDelay (unsigned int demux_rate);
void OutputSector ();
protected:
void OutputSeqhdrInfo ();
virtual bool AUBufferNeedsRefill ();
virtual void FillAUbuffer (unsigned int frames_to_buffer);
virtual void InitAUbuffer ();
virtual void NextDTSPTS (clockticks & DTS, clockticks & PTS);
void ScanFirstSeqHeader ();
uint8_t NewAUTimestamps (int AUtype);
bool NewAUBuffers (int AUtype);
public:
unsigned int num_sequence;
unsigned int num_seq_end;
unsigned int num_pictures;
unsigned int num_groups;
unsigned int num_frames[4];
unsigned int 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 comp_bit_rate;
unsigned int peak_bit_rate;
unsigned int vbv_buffer_size;
unsigned int CSPF;
double secs_per_frame;
bool dtspts_for_all_au;
bool gop_control_packet;
protected:
/* State variables for scanning source bit-stream */
VAunit access_unit;
unsigned int fields_presented;
unsigned int group_order;
unsigned int group_start_pic;
unsigned int group_start_field;
int temporal_reference;
unsigned int pict_rate;
unsigned int pict_struct;
int pulldown_32;
int repeat_first_field;
int prev_temp_ref;
double frame_rate;
unsigned int max_bits_persec;
int AU_pict_data;
int AU_hdr;
clockticks max_PTS;
clockticks max_STD_buffer_delay;
int opt_mpeg;
int opt_multifile_segment;
};
//
// DVD's generate control sectors for each GOP...
//
class DVDVideoStream:public VideoStream
{
public:
DVDVideoStream (IBitStream & ibs, OutputStream & into):VideoStream (ibs, 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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