libmpdemux/video.c

   1 /*
   2  * video frame reading
   3  *
   4  * This file is part of MPlayer.
   5  *
   6  * MPlayer is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * MPlayer is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdio.h>
  24 #if HAVE_MALLOC_H
  25 #include <malloc.h>
  26 #endif
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <unistd.h>
  30
  31 #include "mp_msg.h"
  32 #include "help_mp.h"
  33
  34 #include "stream/stream.h"
  35 #include "demuxer.h"
  36 #include "demux_ty_osd.h"
  37 #include "stheader.h"
  38 #include "parse_es.h"
  39 #include "mpeg_hdr.h"
  40
  41 /* sub_cc (closed captions)*/
  42 #include "sub_cc.h"
  43
  44 /* biCompression constant */
  45 #define BI_RGB        0L
  46
  47 #ifdef CONFIG_LIVE555
  48 #include "demux_rtp.h"
  49 #endif
  50
  51 static mp_mpeg_header_t picture;
  52
  53 static int telecine=0;
  54 static float telecine_cnt=-2.5;
  55
  56 typedef enum {
  57   VIDEO_MPEG12,
  58   VIDEO_MPEG4,
  59   VIDEO_H264,
  60   VIDEO_VC1,
  61   VIDEO_OTHER
  62 } video_codec_t;
  63
  64 static video_codec_t find_video_codec(sh_video_t *sh_video)
  65 {
  66   demux_stream_t *d_video=sh_video->ds;
  67   int fmt = d_video->demuxer->file_format;
  68
  69   if(
  70     (fmt == DEMUXER_TYPE_PVA) ||
  71     (fmt == DEMUXER_TYPE_MPEG_ES) ||
  72     (fmt == DEMUXER_TYPE_MPEG_GXF) ||
  73     (fmt == DEMUXER_TYPE_MPEG_PES) ||
  74     (
  75       (fmt == DEMUXER_TYPE_MPEG_PS || fmt == DEMUXER_TYPE_MPEG_TS) &&
  76       ((! sh_video->format) || (sh_video->format==0x10000001) || (sh_video->format==0x10000002))
  77     ) ||
  78     (fmt == DEMUXER_TYPE_MPEG_TY)
  79 #ifdef CONFIG_LIVE555
  80     || ((fmt == DEMUXER_TYPE_RTP) && demux_is_mpeg_rtp_stream(d_video->demuxer))
  81 #endif
  82   )
  83     return VIDEO_MPEG12;
  84   else if((fmt == DEMUXER_TYPE_MPEG4_ES) ||
  85     ((fmt == DEMUXER_TYPE_MPEG_TS) && (sh_video->format==0x10000004)) ||
  86     ((fmt == DEMUXER_TYPE_MPEG_PS) && (sh_video->format==0x10000004))
  87   )
  88     return VIDEO_MPEG4;
  89   else if((fmt == DEMUXER_TYPE_H264_ES) ||
  90     ((fmt == DEMUXER_TYPE_MPEG_TS) && (sh_video->format==0x10000005)) ||
  91     ((fmt == DEMUXER_TYPE_MPEG_PS) && (sh_video->format==0x10000005))
  92   )
  93     return VIDEO_H264;
  94   else if((fmt == DEMUXER_TYPE_MPEG_PS ||  fmt == DEMUXER_TYPE_MPEG_TS) &&
  95     (sh_video->format==mmioFOURCC('W', 'V', 'C', '1')))
  96     return VIDEO_VC1;
  97   else if (fmt == DEMUXER_TYPE_ASF && sh_video->bih && sh_video->bih->biCompression == mmioFOURCC('D', 'V', 'R', ' '))
  98     return VIDEO_MPEG12;
  99   else
 100     return VIDEO_OTHER;
 101 }
 102
 103 int video_read_properties(sh_video_t *sh_video){
 104 demux_stream_t *d_video=sh_video->ds;
 105 video_codec_t video_codec = find_video_codec(sh_video);
 106 // Determine image properties:
 107 switch(video_codec){
 108  case VIDEO_OTHER: {
 109  if((d_video->demuxer->file_format == DEMUXER_TYPE_ASF) || (d_video->demuxer->file_format == DEMUXER_TYPE_AVI)) {
 110     // display info:
 111     // in case no strf chunk has been seen in avi, we have no bitmap header
 112     if(!sh_video->bih) return 0;
 113     sh_video->format=sh_video->bih->biCompression;
 114     sh_video->disp_w=sh_video->bih->biWidth;
 115     sh_video->disp_h=abs(sh_video->bih->biHeight);
 116   }
 117   break;
 118  }
 119  case VIDEO_MPEG4: {
 120    int pos = 0, vop_cnt=0, units[3];
 121    videobuf_len=0; videobuf_code_len=0;
 122    mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for Video Object Start code... ");
 123    while(1){
 124       int i=sync_video_packet(d_video);
 125       if(i<=0x11F) break; // found it!
 126       if(!i || !skip_video_packet(d_video)){
 127         mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
 128         return 0;
 129       }
 130    }
 131    mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
 132    if(!videobuffer) {
 133      videobuffer=(char*)memalign(8,VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
 134      if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
 135      else {
 136        mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
 137        return 0;
 138      }
 139    }
 140    mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for Video Object Layer Start code... ");
 141    while(1){
 142       int i=sync_video_packet(d_video);
 143       mp_msg(MSGT_DECVIDEO,MSGL_V,"M4V: 0x%X\n",i);
 144       if(i>=0x120 && i<=0x12F) break; // found it!
 145       if(!i || !read_video_packet(d_video)){
 146         mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
 147         return 0;
 148       }
 149    }
 150    pos = videobuf_len+4;
 151    if(!read_video_packet(d_video)){
 152      mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read Video Object Layer Header\n");
 153      return 0;
 154    }
 155    mp4_header_process_vol(&picture, &(videobuffer[pos]));
 156    mp_msg(MSGT_DECVIDEO,MSGL_V,"OK! FPS SEEMS TO BE %.3f\nSearching for Video Object Plane Start code... ", sh_video->fps);
 157  mp4_init:
 158    while(1){
 159       int i=sync_video_packet(d_video);
 160       if(i==0x1B6) break; // found it!
 161       if(!i || !read_video_packet(d_video)){
 162         mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
 163         return 0;
 164       }
 165    }
 166    pos = videobuf_len+4;
 167    if(!read_video_packet(d_video)){
 168      mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read Video Object Plane Header\n");
 169      return 0;
 170    }
 171    mp4_header_process_vop(&picture, &(videobuffer[pos]));
 172    sh_video->disp_w = picture.display_picture_width;
 173    sh_video->disp_h = picture.display_picture_height;
 174    units[vop_cnt] = picture.timeinc_unit;
 175    vop_cnt++;
 176    //mp_msg(MSGT_DECVIDEO,MSGL_V, "TYPE: %d, unit: %d\n", picture.picture_type, picture.timeinc_unit);
 177    if(!picture.fps) {
 178      int i, mn, md, mx, diff;
 179      if(vop_cnt < 3)
 180           goto mp4_init;
 181
 182      i=0;
 183      mn = mx = units[0];
 184      for(i=0; i<3; i++) {
 185        if(units[i] < mn)
 186          mn = units[i];
 187        if(units[i] > mx)
 188          mx = units[i];
 189      }
 190      md = mn;
 191      for(i=0; i<3; i++) {
 192        if((units[i] > mn) && (units[i] < mx))
 193          md = units[i];
 194      }
 195      mp_msg(MSGT_DECVIDEO,MSGL_V, "MIN: %d, mid: %d, max: %d\n", mn, md, mx);
 196      if(mx - md > md - mn)
 197        diff = md - mn;
 198      else
 199        diff = mx - md;
 200      if(diff > 0){
 201        picture.fps = ((float)picture.timeinc_resolution) / diff;
 202        mp_msg(MSGT_DECVIDEO,MSGL_V, "FPS seems to be: %f, resolution: %d, delta_units: %d\n", picture.fps, picture.timeinc_resolution, diff);
 203      }
 204    }
 205    if(picture.fps) {
 206     sh_video->fps=picture.fps;
 207     sh_video->frametime=1.0/picture.fps;
 208     mp_msg(MSGT_DECVIDEO,MSGL_INFO, "FPS seems to be: %f\n", picture.fps);
 209    }
 210    mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
 211    sh_video->format=0x10000004;
 212    break;
 213  }
 214  case VIDEO_H264: {
 215    int pos = 0;
 216    videobuf_len=0; videobuf_code_len=0;
 217    mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for sequence parameter set... ");
 218    while(1){
 219       int i=sync_video_packet(d_video);
 220       if((i&~0x60) == 0x107 && i != 0x107) break; // found it!
 221       if(!i || !skip_video_packet(d_video)){
 222         mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
 223         return 0;
 224       }
 225    }
 226    mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
 227    if(!videobuffer) {
 228      videobuffer=(char*)memalign(8,VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
 229      if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
 230      else {
 231        mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
 232        return 0;
 233      }
 234    }
 235    pos = videobuf_len+4;
 236    if(!read_video_packet(d_video)){
 237      mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read sequence parameter set\n");
 238      return 0;
 239    }
 240    h264_parse_sps(&picture, &(videobuffer[pos]), videobuf_len - pos);
 241    sh_video->disp_w=picture.display_picture_width;
 242    sh_video->disp_h=picture.display_picture_height;
 243    mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for picture parameter set... ");
 244    while(1){
 245       int i=sync_video_packet(d_video);
 246       mp_msg(MSGT_DECVIDEO,MSGL_V,"H264: 0x%X\n",i);
 247       if((i&~0x60) == 0x108 && i != 0x108) break; // found it!
 248       if(!i || !read_video_packet(d_video)){
 249         mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
 250         return 0;
 251       }
 252    }
 253    mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\nSearching for Slice... ");
 254    while(1){
 255       int i=sync_video_packet(d_video);
 256       if((i&~0x60) == 0x101 || (i&~0x60) == 0x102 || (i&~0x60) == 0x105) break; // found it!
 257       if(!i || !read_video_packet(d_video)){
 258         mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
 259         return 0;
 260       }
 261    }
 262    mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
 263    sh_video->format=0x10000005;
 264    if(picture.fps) {
 265      sh_video->fps=picture.fps;
 266      sh_video->frametime=1.0/picture.fps;
 267      mp_msg(MSGT_DECVIDEO,MSGL_INFO, "FPS seems to be: %f\n", picture.fps);
 268    }
 269    break;
 270  }
 271  case VIDEO_MPEG12: {
 272    if (d_video->demuxer->file_format == DEMUXER_TYPE_ASF) { // DVR-MS
 273      if(!sh_video->bih) return 0;
 274      sh_video->format=sh_video->bih->biCompression;
 275    }
 276 mpeg_header_parser:
 277    // Find sequence_header first:
 278    videobuf_len=0; videobuf_code_len=0;
 279    telecine=0; telecine_cnt=-2.5;
 280    mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for sequence header... ");
 281    while(1){
 282       int i=sync_video_packet(d_video);
 283       if(i==0x1B3) break; // found it!
 284       if(!i || !skip_video_packet(d_video)){
 285         if( mp_msg_test(MSGT_DECVIDEO,MSGL_V) )  mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
 286         mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_MpegNoSequHdr);
 287         return 0;
 288       }
 289    }
 290    mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
 291    // ========= Read & process sequence header & extension ============
 292    if(!videobuffer) {
 293      videobuffer=(char*)memalign(8,VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
 294      if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
 295      else {
 296        mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
 297        return 0;
 298      }
 299    }
 300
 301    if(!read_video_packet(d_video)){
 302      mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_CannotReadMpegSequHdr);
 303      return 0;
 304    }
 305    if(mp_header_process_sequence_header (&picture, &videobuffer[4])) {
 306      mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_BadMpegSequHdr);
 307      goto mpeg_header_parser;
 308    }
 309    if(sync_video_packet(d_video)==0x1B5){ // next packet is seq. ext.
 310     int pos=videobuf_len;
 311     if(!read_video_packet(d_video)){
 312       mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_CannotReadMpegSequHdrEx);
 313       return 0;
 314     }
 315     if(mp_header_process_extension (&picture, &videobuffer[pos+4])) {
 316       mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_BadMpegSequHdrEx);
 317       return 0;
 318     }
 319    }
 320
 321    // display info:
 322    sh_video->format=picture.mpeg1?0x10000001:0x10000002; // mpeg video
 323    sh_video->fps=picture.fps * picture.frame_rate_extension_n / picture.frame_rate_extension_d;
 324    if(!sh_video->fps){
 325      sh_video->frametime=0;
 326    } else {
 327      sh_video->frametime=1.0/sh_video->fps;
 328    }
 329    sh_video->disp_w=picture.display_picture_width;
 330    sh_video->disp_h=picture.display_picture_height;
 331    // bitrate:
 332    if(picture.bitrate!=0x3FFFF) // unspecified/VBR ?
 333        sh_video->i_bps=picture.bitrate * 400 / 8;
 334    // info:
 335    mp_dbg(MSGT_DECVIDEO,MSGL_DBG2,"mpeg bitrate: %d (%X)\n",picture.bitrate,picture.bitrate);
 336    mp_msg(MSGT_DECVIDEO,MSGL_INFO,"VIDEO:  %s  %dx%d  (aspect %d)  %5.3f fps  %5.1f kbps (%4.1f kbyte/s)\n",
 337     picture.mpeg1?"MPEG1":"MPEG2",
 338     sh_video->disp_w,sh_video->disp_h,
 339     picture.aspect_ratio_information,
 340     sh_video->fps,
 341     sh_video->i_bps * 8 / 1000.0,
 342     sh_video->i_bps / 1000.0 );
 343   break;
 344  }
 345  case VIDEO_VC1: {
 346    // Find sequence_header:
 347    videobuf_len=0;
 348    videobuf_code_len=0;
 349    mp_msg(MSGT_DECVIDEO,MSGL_INFO,"Searching for VC1 sequence header... ");
 350    while(1){
 351       int i=sync_video_packet(d_video);
 352       if(i==0x10F) break; // found it!
 353       if(!i || !skip_video_packet(d_video)){
 354         if( mp_msg_test(MSGT_DECVIDEO,MSGL_V) )  mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
 355         mp_msg(MSGT_DECVIDEO,MSGL_ERR, "Couldn't find VC-1 sequence header\n");
 356         return 0;
 357       }
 358    }
 359    mp_msg(MSGT_DECVIDEO,MSGL_INFO,"found\n");
 360    if(!videobuffer) {
 361      videobuffer=(char*)memalign(8,VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
 362      if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
 363      else {
 364        mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
 365        return 0;
 366      }
 367    }
 368    if(!read_video_packet(d_video)){
 369      mp_msg(MSGT_DECVIDEO,MSGL_ERR, "Couldn't read VC-1 sequence header!\n");
 370      return 0;
 371    }
 372
 373    while(1) {
 374       int i=sync_video_packet(d_video);
 375       if(i==0x10E) break; // found it!
 376       if(!i || !skip_video_packet(d_video)){
 377         mp_msg(MSGT_DECVIDEO,MSGL_V,"Couldn't find VC-1 entry point sync-code:(\n");
 378         return 0;
 379       }
 380    }
 381    if(!read_video_packet(d_video)){
 382       mp_msg(MSGT_DECVIDEO,MSGL_V,"Couldn't read VC-1 entry point sync-code:(\n");
 383       return 0;
 384    }
 385
 386    if(mp_vc1_decode_sequence_header(&picture, &videobuffer[4], videobuf_len-4)) {
 387      sh_video->bih = calloc(1, sizeof(BITMAPINFOHEADER) + videobuf_len);
 388      if(sh_video->bih == NULL) {
 389        mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Couldn't alloc %d bytes for VC-1 extradata!\n", sizeof(BITMAPINFOHEADER) + videobuf_len);
 390        return 0;
 391      }
 392      sh_video->bih->biSize= sizeof(BITMAPINFOHEADER) + videobuf_len;
 393      memcpy(sh_video->bih + 1, videobuffer, videobuf_len);
 394      sh_video->bih->biCompression = sh_video->format;
 395      sh_video->bih->biWidth = sh_video->disp_w = picture.display_picture_width;
 396      sh_video->bih->biHeight = sh_video->disp_h = picture.display_picture_height;
 397      if(picture.fps > 0) {
 398        sh_video->frametime=1.0/picture.fps;
 399        sh_video->fps = picture.fps;
 400      }
 401      mp_msg(MSGT_DECVIDEO,MSGL_INFO,"VIDEO:  VC-1  %dx%d, %5.3f fps, header len: %d\n",
 402        sh_video->disp_w, sh_video->disp_h, sh_video->fps, videobuf_len);
 403    }
 404   break;
 405  }
 406 } // switch(file_format)
 407
 408 return 1;
 409 }
 410
 411 static void process_userdata(unsigned char* buf,int len){
 412     int i;
 413     /* if the user data starts with "CC", assume it is a CC info packet */
 414     if(len>2 && buf[0]=='C' && buf[1]=='C'){
 415 //    mp_msg(MSGT_DECVIDEO,MSGL_DBG2,"video.c: process_userdata() detected Closed Captions!\n");
 416       subcc_process_data(buf+2,len-2);
 417     }
 418     if( len > 2 && buf[ 0 ] == 'T' && buf[ 1 ] == 'Y' )
 419     {
 420        ty_processuserdata( buf + 2, len - 2 );
 421        return;
 422     }
 423     if(verbose<2) return;
 424     fprintf(stderr, "user_data: len=%3d  %02X %02X %02X %02X '",
 425       len, buf[0], buf[1], buf[2], buf[3]);
 426     for(i=0;i<len;i++)
 427 //    if(buf[i]>=32 && buf[i]<127) fputc(buf[i], stderr);
 428       if(buf[i]&0x60) fputc(buf[i]&0x7F, stderr);
 429     fprintf(stderr, "'\n");
 430 }
 431
 432 int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char** start,int force_fps){
 433     demux_stream_t *d_video=sh_video->ds;
 434     demuxer_t *demuxer=d_video->demuxer;
 435     float frame_time=1;
 436     float pts1=d_video->pts;
 437     float pts=0;
 438     float fps;
 439     int picture_coding_type=0;
 440     int in_size=0;
 441     video_codec_t video_codec = find_video_codec(sh_video);
 442
 443     *start=NULL;
 444
 445   if(video_codec == VIDEO_MPEG12){
 446         int in_frame=0;
 447         //float newfps;
 448         //videobuf_len=0;
 449         while(videobuf_len<VIDEOBUFFER_SIZE-MAX_VIDEO_PACKET_SIZE){
 450           int i=sync_video_packet(d_video);
 451           //void* buffer=&videobuffer[videobuf_len+4];
 452           int start=videobuf_len+4;
 453           if(in_frame){
 454             if(i<0x101 || i>=0x1B0){  // not slice code -> end of frame
 455               if(!i) return -1; // EOF
 456               break;
 457             }
 458           } else {
 459             if(i==0x100){
 460               pts=d_video->pts;
 461               d_video->pts=0;
 462             }
 463             if(i>=0x101 && i<0x1B0) in_frame=1; // picture startcode
 464             else if(!i) return -1; // EOF
 465           }
 466           if(!read_video_packet(d_video)) return -1; // EOF
 467           // process headers:
 468           switch(i){
 469             case 0x1B3: mp_header_process_sequence_header (&picture, &videobuffer[start]);break;
 470             case 0x1B5: mp_header_process_extension (&picture, &videobuffer[start]);break;
 471             case 0x1B2: process_userdata (&videobuffer[start], videobuf_len-start);break;
 472             case 0x100: picture_coding_type=(videobuffer[start+1] >> 3) & 7;break;
 473           }
 474         }
 475         fps = picture.fps * picture.frame_rate_extension_n / picture.frame_rate_extension_d;
 476
 477         *start=videobuffer; in_size=videobuf_len;
 478
 479     // get mpeg fps:
 480     if(sh_video->fps!=fps) if(!force_fps && !telecine){
 481             mp_msg(MSGT_CPLAYER,MSGL_WARN,"Warning! FPS changed %5.3f -> %5.3f  (%f) [%d]  \n",sh_video->fps,fps,sh_video->fps-fps,picture.frame_rate_code);
 482             sh_video->fps=fps;
 483             sh_video->frametime=1.0/fps;
 484     }
 485
 486     // fix mpeg2 frametime:
 487     frame_time=(picture.display_time)*0.01f;
 488     picture.display_time=100;
 489     videobuf_len=0;
 490
 491     telecine_cnt*=0.9; // drift out error
 492     telecine_cnt+=frame_time-5.0/4.0;
 493     mp_msg(MSGT_DECVIDEO,MSGL_DBG2,"\r telecine = %3.1f  %5.3f     \n",frame_time,telecine_cnt);
 494
 495     if(telecine){
 496         frame_time=1;
 497         if(telecine_cnt<-1.5 || telecine_cnt>1.5){
 498             mp_msg(MSGT_DECVIDEO,MSGL_INFO,MSGTR_LeaveTelecineMode);
 499             telecine=0;
 500         }
 501     } else
 502         if(telecine_cnt>-0.5 && telecine_cnt<0.5 && !force_fps){
 503             sh_video->fps=sh_video->fps*4/5;
 504             sh_video->frametime=sh_video->frametime*5/4;
 505             mp_msg(MSGT_DECVIDEO,MSGL_INFO,MSGTR_EnterTelecineMode);
 506             telecine=1;
 507         }
 508   } else if(video_codec == VIDEO_MPEG4){
 509         while(videobuf_len<VIDEOBUFFER_SIZE-MAX_VIDEO_PACKET_SIZE){
 510           int i=sync_video_packet(d_video);
 511           if(!i) return -1;
 512           if(!read_video_packet(d_video)) return -1; // EOF
 513           if(i==0x1B6) break;
 514         }
 515         *start=videobuffer; in_size=videobuf_len;
 516         videobuf_len=0;
 517   } else if(video_codec == VIDEO_H264){
 518         int in_picture = 0;
 519         while(videobuf_len<VIDEOBUFFER_SIZE-MAX_VIDEO_PACKET_SIZE){
 520           int i=sync_video_packet(d_video);
 521           int pos = videobuf_len+4;
 522           if(!i) return -1;
 523           if(!read_video_packet(d_video)) return -1; // EOF
 524           if((i&~0x60) == 0x107 && i != 0x107) {
 525             h264_parse_sps(&picture, &(videobuffer[pos]), videobuf_len - pos);
 526             if(picture.fps > 0) {
 527               sh_video->fps=picture.fps;
 528               sh_video->frametime=1.0/picture.fps;
 529             }
 530             i=sync_video_packet(d_video);
 531             if(!i) return -1;
 532             if(!read_video_packet(d_video)) return -1; // EOF
 533           }
 534
 535           // here starts the access unit end detection code
 536           // see the mail on MPlayer-dev-eng for details:
 537           // Date: Sat, 17 Sep 2005 11:24:06 +0200
 538           // Subject: Re: [MPlayer-dev-eng] [RFC] h264 ES parser problems
 539           // Message-ID: <20050917092406.GA7699@rz.uni-karlsruhe.de>
 540           if((i&~0x60) == 0x101 || (i&~0x60) == 0x102 || (i&~0x60) == 0x105)
 541             // found VCL NAL with slice header i.e. start of current primary coded
 542             // picture, so start scanning for the end now
 543             in_picture = 1;
 544           if (in_picture) {
 545             i = sync_video_packet(d_video) & ~0x60; // code of next packet
 546             if(i == 0x106 || i == 0x109) break; // SEI or access unit delim.
 547             if(i == 0x101 || i == 0x102 || i == 0x105) {
 548               // assuming arbitrary slice ordering is not allowed, the
 549               // first_mb_in_slice (golomb encoded) value should be 0 then
 550               // for the first VCL NAL in a picture
 551               if (demux_peekc(d_video) & 0x80)
 552                 break;
 553             }
 554           }
 555         }
 556         *start=videobuffer; in_size=videobuf_len;
 557         videobuf_len=0;
 558   }  else if(video_codec == VIDEO_VC1) {
 559        while(videobuf_len<VIDEOBUFFER_SIZE-MAX_VIDEO_PACKET_SIZE) {
 560          int i=sync_video_packet(d_video);
 561          if(!i) return -1;
 562          if(!read_video_packet(d_video)) return -1; // EOF
 563          if(i==0x10D) break;
 564        }
 565        *start=videobuffer;
 566        in_size=videobuf_len;
 567        videobuf_len=0;
 568   } else {
 569       // frame-based file formats: (AVI,ASF,MOV)
 570     in_size=ds_get_packet(d_video,start);
 571     if(in_size<0) return -1; // EOF
 572   }
 573
 574
 575 //------------------------ frame decoded. --------------------
 576
 577     // Increase video timers:
 578     sh_video->num_frames+=frame_time;
 579     ++sh_video->num_frames_decoded;
 580
 581     frame_time*=sh_video->frametime;
 582
 583     // override frame_time for variable/unknown FPS formats:
 584     if(!force_fps) switch(demuxer->file_format){
 585       case DEMUXER_TYPE_GIF:
 586       case DEMUXER_TYPE_MATROSKA:
 587       case DEMUXER_TYPE_MNG:
 588        if(d_video->pts>0 && pts1>0 && d_video->pts>pts1)
 589          frame_time=d_video->pts-pts1;
 590         break;
 591       case DEMUXER_TYPE_TV:
 592       case DEMUXER_TYPE_MOV:
 593       case DEMUXER_TYPE_FILM:
 594       case DEMUXER_TYPE_VIVO:
 595       case DEMUXER_TYPE_OGG:
 596       case DEMUXER_TYPE_ASF: {
 597         double next_pts = ds_get_next_pts(d_video);
 598         double d= (next_pts != MP_NOPTS_VALUE) ? next_pts - d_video->pts : d_video->pts-pts1;
 599         if(d>=0){
 600           if(d>0){
 601             if((int)sh_video->fps==1000)
 602               mp_msg(MSGT_CPLAYER,MSGL_V,"\navg. framerate: %d fps             \n",(int)(1.0f/d));
 603             sh_video->frametime=d; // 1ms
 604             sh_video->fps=1.0f/d;
 605           }
 606           frame_time = d;
 607         } else {
 608           mp_msg(MSGT_CPLAYER,MSGL_WARN,"\nInvalid frame duration value (%5.3f/%5.3f => %5.3f). Defaulting to %5.3f sec.\n",d_video->pts,next_pts,d,frame_time);
 609           // frame_time = 1/25.0;
 610         }
 611       }
 612       break;
 613       case DEMUXER_TYPE_LAVF:
 614       case DEMUXER_TYPE_LAVF_PREFERRED:
 615         if((int)sh_video->fps==1000 || (int)sh_video->fps<=1){
 616           double next_pts = ds_get_next_pts(d_video);
 617           double d= (next_pts != MP_NOPTS_VALUE) ? next_pts - d_video->pts : d_video->pts-pts1;
 618           if(d>=0){
 619             frame_time = d;
 620           }
 621         }
 622       break;
 623       case DEMUXER_TYPE_REAL:
 624         {
 625           double next_pts = ds_get_next_pts(d_video);
 626           double d = (next_pts != MP_NOPTS_VALUE) ? next_pts - d_video->pts : d_video->pts - pts1;
 627
 628           frame_time = (d >= 0 && pts1 > 0) ? d : 0.001;
 629         }
 630       break;
 631     }
 632
 633     if(video_codec == VIDEO_MPEG12){
 634         sh_video->pts+=frame_time;
 635         if(picture_coding_type==1)
 636             d_video->flags |= 1;
 637         if(picture_coding_type<=2 && sh_video->i_pts){
 638             sh_video->pts=sh_video->i_pts;
 639             sh_video->i_pts=pts;
 640         } else {
 641             if(pts){
 642                 if(picture_coding_type<=2) sh_video->i_pts=pts;
 643                 else sh_video->pts=pts;
 644             }
 645         }
 646     } else
 647         sh_video->pts=d_video->pts;
 648
 649     if(frame_time_ptr) *frame_time_ptr=frame_time;
 650     return in_size;
 651 }