mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-18 22:36:33 +00:00
63294c0655
Original commit message from CVS: Moved from gst-plugins/ext/mplex/. See that directory for older changelogs.
155 lines
3.5 KiB
C++
155 lines
3.5 KiB
C++
|
||
/*
|
||
* 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:
|
||
*/
|