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155 lines
3.5 KiB
C++
155 lines
3.5 KiB
C++
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/*
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* videostrm.hh: Video stream elementary input stream
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*
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* Copyright (C) 2001 Andrew Stevens <andrew.stevens@philips.com>
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public License
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __VIDEOSTRM_H__
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#define __VIDEOSTRM_H__
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#include "inputstrm.hh"
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class VideoStream:public ElementaryStream
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{
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public:
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VideoStream (IBitStream & ibs, OutputStream & into);
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void Init (const int stream_num);
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static bool Probe (IBitStream & bs);
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void Close ();
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inline int AUType ()
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{
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return au->type;
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}
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inline bool EndSeq ()
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{
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return au->end_seq;
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}
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inline int NextAUType ()
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{
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VAunit *p_au = Lookahead ();
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if (p_au != NULL)
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return p_au->type;
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else
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return NOFRAME;
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}
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inline bool SeqHdrNext ()
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{
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VAunit *p_au = Lookahead ();
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return p_au != NULL && p_au->seq_header;
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}
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virtual unsigned int NominalBitRate ()
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{
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return bit_rate * 50;
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}
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virtual void OutputGOPControlSector ();
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bool RunOutComplete ();
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virtual bool MuxPossible (clockticks currentSCR);
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void SetMaxStdBufferDelay (unsigned int demux_rate);
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void OutputSector ();
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protected:
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void OutputSeqhdrInfo ();
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virtual bool AUBufferNeedsRefill ();
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virtual void FillAUbuffer (unsigned int frames_to_buffer);
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virtual void InitAUbuffer ();
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virtual void NextDTSPTS (clockticks & DTS, clockticks & PTS);
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void ScanFirstSeqHeader ();
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uint8_t NewAUTimestamps (int AUtype);
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bool NewAUBuffers (int AUtype);
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public:
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unsigned int num_sequence;
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unsigned int num_seq_end;
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unsigned int num_pictures;
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unsigned int num_groups;
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unsigned int num_frames[4];
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unsigned int avg_frames[4];
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unsigned int horizontal_size;
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unsigned int vertical_size;
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unsigned int aspect_ratio;
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unsigned int picture_rate;
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unsigned int bit_rate;
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unsigned int comp_bit_rate;
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unsigned int peak_bit_rate;
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unsigned int vbv_buffer_size;
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unsigned int CSPF;
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double secs_per_frame;
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bool dtspts_for_all_au;
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bool gop_control_packet;
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protected:
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/* State variables for scanning source bit-stream */
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VAunit access_unit;
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unsigned int fields_presented;
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unsigned int group_order;
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unsigned int group_start_pic;
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unsigned int group_start_field;
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int temporal_reference;
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unsigned int pict_rate;
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unsigned int pict_struct;
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int pulldown_32;
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int repeat_first_field;
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int prev_temp_ref;
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double frame_rate;
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unsigned int max_bits_persec;
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int AU_pict_data;
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int AU_hdr;
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clockticks max_PTS;
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clockticks max_STD_buffer_delay;
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int opt_mpeg;
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int opt_multifile_segment;
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};
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//
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// DVD's generate control sectors for each GOP...
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//
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class DVDVideoStream:public VideoStream
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{
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public:
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DVDVideoStream (IBitStream & ibs, OutputStream & into):VideoStream (ibs, into)
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{
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gop_control_packet = true;
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}
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void OutputGOPControlSector ();
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};
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#endif // __INPUTSTRM_H__
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/*
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* Local variables:
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* c-file-style: "stroustrup"
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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