libmpdemux/mpeg_hdr.h

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #ifndef MPLAYER_MPEG_HDR_H
  20 #define MPLAYER_MPEG_HDR_H
  21
  22 typedef struct {
  23     // video info:
  24     int mpeg1; // 0=mpeg2  1=mpeg1
  25     int display_picture_width;
  26     int display_picture_height;
  27     int aspect_ratio_information;
  28     int frame_rate_code;
  29     float fps;
  30     int frame_rate_extension_n;
  31     int frame_rate_extension_d;
  32     int bitrate; // 0x3FFFF==VBR
  33     // timing:
  34     int picture_structure;
  35     int progressive_sequence;
  36     int repeat_first_field;
  37     int progressive_frame;
  38     int top_field_first;
  39     int display_time; // secs*100
  40     //the following are for mpeg4
  41     unsigned int timeinc_resolution, timeinc_bits, timeinc_unit;
  42     int picture_type;
  43 } mp_mpeg_header_t;
  44
  45 int mp_header_process_sequence_header (mp_mpeg_header_t * picture, const unsigned char * buffer);
  46 int mp_header_process_extension (mp_mpeg_header_t * picture, unsigned char * buffer);
  47 float mpeg12_aspect_info(mp_mpeg_header_t *picture);
  48 int mp4_header_process_vol(mp_mpeg_header_t * picture, unsigned char * buffer);
  49 void mp4_header_process_vop(mp_mpeg_header_t * picture, unsigned char * buffer);
  50 int h264_parse_sps(mp_mpeg_header_t * picture, unsigned char * buf, int len);
  51 int mp_vc1_decode_sequence_header(mp_mpeg_header_t * picture, unsigned char * buf, int len);
  52
  53 unsigned char mp_getbits(unsigned char *buffer, unsigned int from, unsigned char len);
  54
  55 #endif /* MPLAYER_MPEG_HDR_H */