libmpdemux/demux_mpg.c

   1 //  MPG/VOB file parser for DEMUXER v2.5  by A'rpi/ESP-team
   2
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6 #include <math.h>
   7
   8 #include "config.h"
   9 #include "mp_msg.h"
  10 #include "help_mp.h"
  11
  12 #include "stream/stream.h"
  13 #include "demuxer.h"
  14 #include "parse_es.h"
  15 #include "stheader.h"
  16 #include "mp3_hdr.h"
  17
  18 //#define MAX_PS_PACKETSIZE 2048
  19 #define MAX_PS_PACKETSIZE (224*1024)
  20
  21 #define UNKNOWN         0
  22 #define VIDEO_MPEG1     0x10000001
  23 #define VIDEO_MPEG2     0x10000002
  24 #define VIDEO_MPEG4     0x10000004
  25 #define VIDEO_H264      0x10000005
  26 #define AUDIO_MP2       0x50
  27 #define AUDIO_A52       0x2000
  28 #define AUDIO_LPCM_BE   0x10001
  29 #define AUDIO_AAC       mmioFOURCC('M', 'P', '4', 'A')
  30
  31 typedef struct mpg_demuxer {
  32   float last_pts;
  33   float first_pts;              // first pts found in stream
  34   float first_to_final_pts_len; // difference between final pts and first pts
  35   int has_valid_timestamps;     // !=0 iff time stamps look linear
  36                                 // (not necessarily starting with 0)
  37   unsigned int es_map[0x40];    //es map of stream types (associated to the pes id) from 0xb0 to 0xef
  38   int num_a_streams;
  39   int a_stream_ids[MAX_A_STREAMS];
  40 } mpg_demuxer_t;
  41
  42 extern char* dvdsub_lang;
  43 static int mpeg_pts_error=0;
  44 off_t ps_probe = 0;
  45
  46 static int parse_psm(demuxer_t *demux, int len) {
  47   unsigned char c, id, type;
  48   unsigned int plen, prog_len, es_map_len;
  49   mpg_demuxer_t *priv = (mpg_demuxer_t *) demux->priv;
  50
  51   mp_dbg(MSGT_DEMUX,MSGL_V, "PARSE_PSM, len=%d\n", len);
  52   if(! len || len > 1018)
  53     return 0;
  54
  55   c = stream_read_char(demux->stream);
  56   if(! (c & 0x80)) {
  57     stream_skip(demux->stream, len - 1);  //not yet valid, discard
  58     return 0;
  59   }
  60   stream_skip(demux->stream, 1);
  61   prog_len = stream_read_word(demux->stream);           //length of program descriptors
  62   stream_skip(demux->stream, prog_len);                 //.. that we ignore
  63   es_map_len = stream_read_word(demux->stream);         //length of elementary streams map
  64   es_map_len = FFMIN(es_map_len, len - prog_len - 8);   //sanity check
  65   while(es_map_len > 0) {
  66     type = stream_read_char(demux->stream);
  67     id = stream_read_char(demux->stream);
  68     if(id >= 0xB0 && id <= 0xEF && priv) {
  69       int idoffset = id - 0xB0;
  70       switch(type) {
  71         case 0x1:
  72           priv->es_map[idoffset] = VIDEO_MPEG1;
  73           break;
  74         case 0x2:
  75           priv->es_map[idoffset] = VIDEO_MPEG2;
  76           break;
  77         case 0x3:
  78         case 0x4:
  79           priv->es_map[idoffset] = AUDIO_MP2;
  80           break;
  81         case 0x0f:
  82         case 0x11:
  83           priv->es_map[idoffset] = AUDIO_AAC;
  84           break;
  85         case 0x10:
  86           priv->es_map[idoffset] = VIDEO_MPEG4;
  87           break;
  88         case 0x1b:
  89           priv->es_map[idoffset] = VIDEO_H264;
  90           break;
  91         case 0x81:
  92           priv->es_map[idoffset] = AUDIO_A52;
  93           break;
  94       }
  95       mp_dbg(MSGT_DEMUX,MSGL_V, "PSM ES, id=0x%x, type=%x, stype: %x\n", id, type, priv->es_map[idoffset]);
  96     }
  97     plen = stream_read_word(demux->stream);             //length of elementary stream descriptors
  98     plen = FFMIN(plen, es_map_len);                     //sanity check
  99     stream_skip(demux->stream, plen);                   //skip descriptors for now
 100     es_map_len -= 4 + plen;
 101   }
 102   stream_skip(demux->stream, 4);                        //skip crc32
 103   return 1;
 104 }
 105
 106 // 500000 is a wild guess
 107 #define TIMESTAMP_PROBE_LEN 500000
 108
 109 //MAX_PTS_DIFF_FOR_CONSECUTIVE denotes the maximum difference
 110 //between two pts to consider them consecutive
 111 //1.0 is a wild guess
 112 #define MAX_PTS_DIFF_FOR_CONSECUTIVE 1.0
 113
 114 //returns the first pts found within TIME_STAMP_PROBE_LEN bytes after stream_pos in demuxer's stream.
 115 //if no pts is found or an error occurs, -1.0 is returned.
 116 //Packs are freed.
 117 static float read_first_mpeg_pts_at_position(demuxer_t* demuxer, off_t stream_pos)
 118 {
 119   stream_t *s = demuxer->stream;
 120   mpg_demuxer_t *mpg_d = demuxer->priv;
 121   float pts = -1.0; //the pts to return;
 122   float found_pts1; //the most recently found pts
 123   float found_pts2; //the pts found before found_pts1
 124   float found_pts3; //the pts found before found_pts2
 125   int found = 0;
 126
 127   if(!mpg_d || stream_pos < 0)
 128     return pts;
 129
 130   found_pts3 = found_pts2 = found_pts1 = mpg_d->last_pts;
 131   stream_seek(s, stream_pos);
 132
 133   //We look for pts.
 134   //However, we do not stop at the first found one, as timestamps may reset
 135   //Therefore, we seek until we found three consecutive
 136   //pts within MAX_PTS_DIFF_FOR_CONSECUTIVE.
 137
 138   while(found<3 && !s->eof
 139    && (fabsf(found_pts2-found_pts1) < MAX_PTS_DIFF_FOR_CONSECUTIVE)
 140    && (fabsf(found_pts3-found_pts2) < MAX_PTS_DIFF_FOR_CONSECUTIVE)
 141    && (stream_tell(s) < stream_pos + TIMESTAMP_PROBE_LEN)
 142    && ds_fill_buffer(demuxer->video))
 143   {
 144     if(mpg_d->last_pts != found_pts1)
 145     {
 146       if(!found)
 147         found_pts3 = found_pts2 = found_pts1 = mpg_d->last_pts; //the most recently found pts
 148       else
 149       {
 150         found_pts3 = found_pts2;
 151         found_pts2 = found_pts1;
 152         found_pts1 = mpg_d->last_pts;
 153       }
 154       found++;
 155     }
 156   }
 157
 158   if(found == 3) pts = found_pts3;
 159
 160   //clean up from searching of first pts;
 161   ds_free_packs(demuxer->audio);
 162   ds_free_packs(demuxer->video);
 163   ds_free_packs(demuxer->sub);
 164
 165   return pts;
 166 }
 167
 168 /// Open an mpg physical stream
 169 static demuxer_t* demux_mpg_open(demuxer_t* demuxer) {
 170   stream_t *s = demuxer->stream;
 171   mpg_demuxer_t* mpg_d;
 172
 173   if (!ds_fill_buffer(demuxer->video)) return 0;
 174   mpg_d = calloc(1,sizeof(mpg_demuxer_t));
 175   if(mpg_d)
 176   {
 177     demuxer->priv = mpg_d;
 178     mpg_d->last_pts = -1.0;
 179     mpg_d->first_pts = -1.0;
 180
 181     //if seeking is allowed set has_valid_timestamps if appropriate
 182     if(demuxer->seekable
 183        && (demuxer->stream->type == STREAMTYPE_FILE
 184            || demuxer->stream->type == STREAMTYPE_VCD)
 185        && demuxer->movi_start != demuxer-> movi_end
 186     )
 187     {
 188       //We seek to the beginning of the stream, to somewhere in the
 189       //middle, and to the end of the stream, while remembering the pts
 190       //at each of the three positions. With these pts, we check whether
 191       //or not the pts are "linear enough" to justify seeking by the pts
 192       //of the stream
 193
 194       //The position where the stream is now
 195       off_t pos = stream_tell(s);
 196       float first_pts = read_first_mpeg_pts_at_position(demuxer, demuxer->movi_start);
 197       if(first_pts != -1.0)
 198       {
 199         float middle_pts = read_first_mpeg_pts_at_position(demuxer, (demuxer->movi_end + demuxer->movi_start)/2);
 200         if(middle_pts != -1.0)
 201         {
 202           float final_pts = read_first_mpeg_pts_at_position(demuxer, demuxer->movi_end - TIMESTAMP_PROBE_LEN);
 203           if(final_pts != -1.0)
 204           {
 205             // found proper first, middle, and final pts.
 206             float proportion = (middle_pts-first_pts==0) ? -1 : (final_pts-middle_pts)/(middle_pts-first_pts);
 207             // if they are linear enough set has_valid_timestamps
 208             if((0.5 < proportion) && (proportion < 2))
 209             {
 210               mpg_d->first_pts = first_pts;
 211               mpg_d->first_to_final_pts_len = final_pts - first_pts;
 212               mpg_d->has_valid_timestamps = 1;
 213             }
 214           }
 215         }
 216       }
 217
 218       //Cleaning up from seeking in stream
 219       demuxer->stream->eof=0;
 220       demuxer->video->eof=0;
 221       demuxer->audio->eof=0;
 222
 223       stream_seek(s,pos);
 224       ds_fill_buffer(demuxer->video);
 225     } // if ( demuxer->seekable )
 226   } // if ( mpg_d )
 227   return demuxer;
 228 }
 229
 230 static void demux_close_mpg(demuxer_t* demuxer) {
 231   mpg_demuxer_t* mpg_d = demuxer->priv;
 232   if (mpg_d) free(mpg_d);
 233 }
 234
 235
 236 static unsigned long long read_mpeg_timestamp(stream_t *s,int c){
 237   unsigned int d,e;
 238   unsigned long long pts;
 239   d=stream_read_word(s);
 240   e=stream_read_word(s);
 241   if( ((c&1)!=1) || ((d&1)!=1) || ((e&1)!=1) ){
 242     ++mpeg_pts_error;
 243     return 0; // invalid pts
 244   }
 245   pts=(((uint64_t)((c>>1)&7))<<30)|((d>>1)<<15)|(e>>1);
 246   mp_dbg(MSGT_DEMUX,MSGL_DBG3," pts {%"PRIu64"}",pts);
 247   return pts;
 248 }
 249
 250 static void new_audio_stream(demuxer_t *demux, int aid){
 251   if(!demux->a_streams[aid]){
 252     mpg_demuxer_t *mpg_d=(mpg_demuxer_t*)demux->priv;
 253     sh_audio_t* sh_a;
 254     new_sh_audio(demux,aid);
 255     sh_a = (sh_audio_t*)demux->a_streams[aid];
 256     switch(aid & 0xE0){  // 1110 0000 b  (high 3 bit: type  low 5: id)
 257       case 0x00: sh_a->format=0x50;break; // mpeg
 258       case 0xA0: sh_a->format=0x10001;break;  // dvd pcm
 259       case 0x80: if((aid & 0xF8) == 0x88) sh_a->format=0x2001;//dts
 260                   else sh_a->format=0x2000;break; // ac3
 261     }
 262     //evo files
 263     if((aid & 0xC0) == 0xC0) sh_a->format=0x2000;
 264     else if(aid >= 0x98 && aid <= 0x9f) sh_a->format=0x2001;
 265     if (mpg_d) mpg_d->a_stream_ids[mpg_d->num_a_streams++] = aid;
 266   }
 267   if(demux->audio->id==-1) demux->audio->id=aid;
 268 }
 269
 270 static int demux_mpg_read_packet(demuxer_t *demux,int id){
 271   int d;
 272   int len;
 273   int set_pts=0; // !=0 iff pts has been set to a proper value
 274   unsigned char c=0;
 275   unsigned long long pts=0;
 276   unsigned long long dts=0;
 277   int l;
 278   int pes_ext2_subid=-1;
 279   double stream_pts = MP_NOPTS_VALUE;
 280   demux_stream_t *ds=NULL;
 281   demux_packet_t* dp;
 282   mpg_demuxer_t *priv = (mpg_demuxer_t *) demux->priv;
 283
 284   mp_dbg(MSGT_DEMUX,MSGL_DBG3,"demux_read_packet: %X\n",id);
 285
 286 //  if(id==0x1F0){
 287 //    demux->synced=0; // force resync after 0x1F0
 288 //    return -1;
 289 //}
 290
 291 //  if(id==0x1BA) packet_start_pos=stream_tell(demux->stream);
 292   if((id<0x1BC || id>=0x1F0) && id != 0x1FD) return -1;
 293   if(id==0x1BE) return -1; // padding stream
 294   if(id==0x1BF) return -1; // private2
 295
 296   len=stream_read_word(demux->stream);
 297   mp_dbg(MSGT_DEMUX,MSGL_DBG3,"PACKET len=%d",len);
 298 //  if(len==62480){ demux->synced=0;return -1;} /* :) */
 299   if(len==0 || len>MAX_PS_PACKETSIZE){
 300     mp_dbg(MSGT_DEMUX,MSGL_DBG2,"Invalid PS packet len: %d\n",len);
 301     return -2;  // invalid packet !!!!!!
 302   }
 303
 304   mpeg_pts_error=0;
 305
 306   if(id==0x1BC) {
 307     parse_psm(demux, len);
 308     return 0;
 309   }
 310
 311   while(len>0){   // Skip stuFFing bytes
 312     c=stream_read_char(demux->stream);
 313     --len;
 314     if(c!=0xFF)break;
 315   }
 316   if((c>>6)==1){  // Read (skip) STD scale & size value
 317 //    printf("  STD_scale=%d",(c>>5)&1);
 318     d=((c&0x1F)<<8)|stream_read_char(demux->stream);
 319     len-=2;
 320 //    printf("  STD_size=%d",d);
 321     c=stream_read_char(demux->stream);
 322   }
 323   // Read System-1 stream timestamps:
 324   if((c>>4)==2){
 325     pts=read_mpeg_timestamp(demux->stream,c);
 326     set_pts=1;
 327     len-=4;
 328   } else
 329   if((c>>4)==3){
 330     pts=read_mpeg_timestamp(demux->stream,c);
 331     c=stream_read_char(demux->stream);
 332     if((c>>4)!=1) pts=0; //printf("{ERROR4}");
 333     else set_pts = 1;
 334     dts=read_mpeg_timestamp(demux->stream,c);
 335     len-=4+1+4;
 336   } else
 337   if((c>>6)==2){
 338     int pts_flags;
 339     int hdrlen;
 340     int parse_ext2;
 341     // System-2 (.VOB) stream:
 342     c=stream_read_char(demux->stream);
 343     pts_flags=c>>6;
 344     parse_ext2 = (id == 0x1FD) && ((c & 0x3F) == 1);
 345     c=stream_read_char(demux->stream);
 346     hdrlen=c;
 347     len-=2;
 348     mp_dbg(MSGT_DEMUX,MSGL_DBG3,"  hdrlen=%d  (len=%d)",hdrlen,len);
 349     if(hdrlen>len){ mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: invalid header length  \n"); return -1;}
 350     if(pts_flags==2 && hdrlen>=5){
 351       c=stream_read_char(demux->stream);
 352       pts=read_mpeg_timestamp(demux->stream,c);
 353       set_pts=1;
 354       len-=5;hdrlen-=5;
 355     } else
 356     if(pts_flags==3 && hdrlen>=10){
 357       c=stream_read_char(demux->stream);
 358       pts=read_mpeg_timestamp(demux->stream,c);
 359       set_pts=1;
 360       c=stream_read_char(demux->stream);
 361       dts=read_mpeg_timestamp(demux->stream,c);
 362       len-=10;hdrlen-=10;
 363     }
 364     len-=hdrlen;
 365     if(parse_ext2 && hdrlen>=3) {
 366       c=stream_read_char(demux->stream);
 367       hdrlen--;
 368
 369       if((c & 0x0F) != 0x0F) {
 370         mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: pes_extension_flag2 not set, discarding pes packet\n");
 371         return -1;
 372       }
 373       if(c & 0x80) { //pes_private_data_flag
 374         if(hdrlen<16) {
 375           mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: not enough pes_private_data bytes: %d < 16, discarding pes packet\n", hdrlen);
 376           return -1;
 377         }
 378         stream_skip(demux->stream, 16);
 379         hdrlen-=16;
 380       }
 381       if(c & 0x40) { //pack_header_field_flag
 382         int l = stream_read_char(demux->stream);
 383         if(l < 0) //couldn't read from the stream?
 384           return -1;
 385         hdrlen--;
 386         if(l < 0 || hdrlen < l) {
 387           mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: not enough pack_header bytes: hdrlen: %d < skip: %d, discarding pes packet\n",
 388                                    hdrlen, l);
 389           return -1;
 390         }
 391         stream_skip(demux->stream, l);
 392         hdrlen-=l;
 393       }
 394       if(c & 0x20) { //program_packet_sequence_counter_flag
 395         if(hdrlen < 2) {
 396           mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: not enough program_packet bytes: hdrlen: %d, discarding pes packet\n", hdrlen);
 397           return -1;
 398         }
 399         stream_skip(demux->stream, 2);
 400         hdrlen-=2;
 401       }
 402       if(c & 0x10) {
 403         //STD
 404         stream_skip(demux->stream, 2);
 405         hdrlen-=2;
 406       }
 407       c=stream_read_char(demux->stream); //pes_extension2 flag
 408       hdrlen--;
 409       if(c!=0x81)  { mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: unknown pes_extension2 format, len is > 1  \n"); return -1;}
 410       c=stream_read_char(demux->stream); //pes_extension2 payload === substream id
 411       hdrlen--;
 412       if(c<0x55 || c>0x5F)   { mp_msg(MSGT_DEMUX,MSGL_V,"demux_mpg: unknown vc1 substream_id: 0x%x  \n", c); return -1;}
 413       pes_ext2_subid=c;
 414     }
 415     if(hdrlen>0)
 416       stream_skip(demux->stream,hdrlen); // skip header and stuffing bytes
 417
 418     if(id==0x1FD && pes_ext2_subid!=-1) {
 419       //==== EVO VC1 STREAMS ===//
 420       if(!demux->v_streams[pes_ext2_subid]) new_sh_video(demux,pes_ext2_subid);
 421       if(demux->video->id==-1) demux->video->id=pes_ext2_subid;
 422       if(demux->video->id==pes_ext2_subid){
 423         ds=demux->video;
 424         if(!ds->sh) ds->sh=demux->v_streams[pes_ext2_subid];
 425         if(priv && ds->sh) {
 426           sh_video_t *sh = (sh_video_t *)ds->sh;
 427           sh->format = mmioFOURCC('W', 'V', 'C', '1');
 428         }
 429       }
 430     }
 431     //============== DVD Audio sub-stream ======================
 432     if(id==0x1BD){
 433       int aid, rawa52 = 0;
 434       off_t tmppos;
 435       unsigned int tmp;
 436
 437       tmppos = stream_tell(demux->stream);
 438       tmp = stream_read_word(demux->stream);
 439       stream_seek(demux->stream, tmppos);
 440       /// vdr stores A52 without the 4 header bytes, so we have to check this condition first
 441       if(tmp == 0x0B77) {
 442         aid = 128;
 443         rawa52 = 1;
 444       }
 445       else {
 446         aid=stream_read_char(demux->stream);--len;
 447         if(len<3) return -1; // invalid audio packet
 448       }
 449
 450       // AID:
 451       // 0x20..0x3F  subtitle
 452       // 0x80..0x87 and 0xC0..0xCF  AC3 audio
 453       // 0x88..0x8F and 0x98..0x9F  DTS audio
 454       // 0xA0..0xBF  PCM audio
 455
 456       if((aid & 0xE0) == 0x20){
 457         // subtitle:
 458         aid&=0x1F;
 459
 460         if(!demux->s_streams[aid]){
 461             sh_sub_t *sh = new_sh_sub(demux, aid);
 462             if (sh) sh->type = 'v';
 463             mp_msg(MSGT_DEMUX,MSGL_V,"==> Found subtitle: %d\n",aid);
 464         }
 465
 466         if(demux->sub->id > -1)
 467           demux->sub->id &= 0x1F;
 468         if(!dvdsub_lang && demux->sub->id == -1)
 469           demux->sub->id = aid;
 470         if(demux->sub->id==aid){
 471             ds=demux->sub;
 472         }
 473       } else if((aid >= 0x80 && aid <= 0x8F) || (aid >= 0x98 && aid <= 0xAF) || (aid >= 0xC0 && aid <= 0xCF)) {
 474
 475 //        aid=128+(aid&0x7F);
 476         // aid=0x80..0xBF
 477         new_audio_stream(demux, aid);
 478       if(demux->audio->id==aid){
 479         int type;
 480         ds=demux->audio;
 481         if(!ds->sh) ds->sh=demux->a_streams[aid];
 482         // READ Packet: Skip additional audio header data:
 483         if(!rawa52) {
 484         c=stream_read_char(demux->stream);//num of frames
 485         type=stream_read_char(demux->stream);//startpos hi
 486         type=(type<<8)|stream_read_char(demux->stream);//startpos lo
 487 //        printf("\r[%02X][%04X]",c,type);
 488         len-=3;
 489         }
 490         if((aid&0xE0)==0xA0 && len>=3){
 491           unsigned char* hdr;
 492           // save audio header as codecdata!
 493           if(!((sh_audio_t*)(ds->sh))->codecdata_len){
 494               ((sh_audio_t*)(ds->sh))->codecdata=malloc(3);
 495               ((sh_audio_t*)(ds->sh))->codecdata_len=3;
 496           }
 497           hdr=((sh_audio_t*)(ds->sh))->codecdata;
 498           // read LPCM header:
 499           // emphasis[1], mute[1], rvd[1], frame number[5]:
 500           hdr[0]=stream_read_char(demux->stream);
 501 //          printf(" [%01X:%02d]",c>>5,c&31);
 502           // quantization[2],freq[2],rvd[1],channels[3]
 503           hdr[1]=stream_read_char(demux->stream);
 504 //          printf("[%01X:%01X] ",c>>4,c&15);
 505           // dynamic range control (0x80=off):
 506           hdr[2]=stream_read_char(demux->stream);
 507 //          printf("[%02X] ",c);
 508           len-=3;
 509           if(len<=0) mp_msg(MSGT_DEMUX,MSGL_V,"End of packet while searching for PCM header\n");
 510         }
 511 //        printf("  \n");
 512       } //  if(demux->audio->id==aid)
 513
 514       } else mp_msg(MSGT_DEMUX,MSGL_V,"Unknown 0x1BD substream: 0x%02X  \n",aid);
 515     } //if(id==0x1BD)
 516   } else {
 517     if(c!=0x0f){
 518       mp_msg(MSGT_DEMUX,MSGL_V,"  {ERROR5,c=%d}  \n",c);
 519       return -1;  // invalid packet !!!!!!
 520     }
 521   }
 522   if(mpeg_pts_error) mp_msg(MSGT_DEMUX,MSGL_V,"  {PTS_err:%d}  \n",mpeg_pts_error);
 523   mp_dbg(MSGT_DEMUX,MSGL_DBG3," => len=%d\n",len);
 524
 525 //  if(len<=0 || len>MAX_PS_PACKETSIZE) return -1;  // Invalid packet size
 526   if(len<=0 || len>MAX_PS_PACKETSIZE){
 527     mp_dbg(MSGT_DEMUX,MSGL_DBG2,"Invalid PS data len: %d\n",len);
 528     return -1;  // invalid packet !!!!!!
 529   }
 530
 531   if(id>=0x1C0 && id<=0x1DF){
 532     // mpeg audio
 533     int aid=id-0x1C0;
 534     new_audio_stream(demux, aid);
 535     if(demux->audio->id==aid){
 536       ds=demux->audio;
 537       if(!ds->sh) ds->sh=demux->a_streams[aid];
 538       if(priv && ds->sh) {
 539         sh_audio_t *sh = (sh_audio_t *)ds->sh;
 540         if(priv->es_map[id - 0x1B0])
 541           sh->format = priv->es_map[id - 0x1B0];
 542           mp_dbg(MSGT_DEMUX,MSGL_DBG2,"ASSIGNED TO STREAM %d CODEC %x\n", id, priv->es_map[id - 0x1B0]);
 543       }
 544     }
 545   } else
 546   if(id>=0x1E0 && id<=0x1EF){
 547     // mpeg video
 548     int aid=id-0x1E0;
 549     if(!demux->v_streams[aid]) new_sh_video(demux,aid);
 550     if(demux->video->id==-1) demux->video->id=aid;
 551     if(demux->video->id==aid){
 552       ds=demux->video;
 553       if(!ds->sh) ds->sh=demux->v_streams[aid];
 554       if(priv && ds->sh) {
 555         sh_video_t *sh = (sh_video_t *)ds->sh;
 556         if(priv->es_map[id - 0x1B0]) {
 557           sh->format = priv->es_map[id - 0x1B0];
 558           mp_dbg(MSGT_DEMUX,MSGL_DBG2,"ASSIGNED TO STREAM %d CODEC %x\n", id, priv->es_map[id - 0x1B0]);
 559         }
 560       }
 561     }
 562   }
 563
 564   if(ds){
 565     mp_dbg(MSGT_DEMUX,MSGL_DBG2,"DEMUX_MPG: Read %d data bytes from packet %04X\n",len,id);
 566 //    printf("packet start = 0x%X  \n",stream_tell(demux->stream)-packet_start_pos);
 567
 568     dp=new_demux_packet(len);
 569     if(!dp) {
 570       mp_dbg(MSGT_DEMUX,MSGL_ERR,"DEMUX_MPG ERROR: couldn't create demux_packet(%d bytes)\n",len);
 571       stream_skip(demux->stream,len);
 572       return 0;
 573     }
 574     l = stream_read(demux->stream,dp->buffer,len);
 575     if(l<len)
 576       resize_demux_packet(dp, l);
 577     len = l;
 578     if(set_pts)
 579       dp->pts=pts/90000.0f;
 580     dp->pos=demux->filepos;
 581     /*
 582       workaround:
 583       set dp->stream_pts only when feeding the video stream, or strangely interleaved files
 584       (such as SWIII) will show strange alternations in the stream time, wildly going
 585       back and forth
 586     */
 587     if(ds == demux->video && stream_control(demux->stream, STREAM_CTRL_GET_CURRENT_TIME,(void *)&stream_pts)!=STREAM_UNSUPPORTED)
 588       dp->stream_pts = stream_pts;
 589     ds_add_packet(ds,dp);
 590     if (demux->priv && set_pts) ((mpg_demuxer_t*)demux->priv)->last_pts = pts/90000.0f;
 591 //    if(ds==demux->sub) parse_dvdsub(ds->last->buffer,ds->last->len);
 592     return 1;
 593   }
 594   mp_dbg(MSGT_DEMUX,MSGL_DBG2,"DEMUX_MPG: Skipping %d data bytes from packet %04X\n",len,id);
 595   if(len<=2356) stream_skip(demux->stream,len);
 596   return 0;
 597 }
 598
 599 static int num_elementary_packets100=0;
 600 static int num_elementary_packets101=0;
 601 static int num_elementary_packets12x=0;
 602 static int num_elementary_packets1B6=0;
 603 static int num_elementary_packetsPES=0;
 604 static int num_h264_slice=0; //combined slice
 605 static int num_h264_dpa=0; //DPA Slice
 606 static int num_h264_dpb=0; //DPB Slice
 607 static int num_h264_dpc=0; //DPC Slice
 608 static int num_h264_idr=0; //IDR Slice
 609 static int num_h264_sps=0;
 610 static int num_h264_pps=0;
 611
 612 static int num_mp3audio_packets=0;
 613
 614 static void clear_stats(void)
 615 {
 616   num_elementary_packets100=0;
 617   num_elementary_packets101=0;
 618   num_elementary_packets1B6=0;
 619   num_elementary_packets12x=0;
 620   num_elementary_packetsPES=0;
 621   num_h264_slice=0; //combined slice
 622   num_h264_dpa=0; //DPA Slice
 623   num_h264_dpb=0; //DPB Slice
 624   num_h264_dpc=0; //DPC Slice
 625   num_h264_idr=0; //IDR Slice
 626   num_h264_sps=0;
 627   num_h264_pps=0;
 628   num_mp3audio_packets=0;
 629 }
 630
 631 //assumes demuxer->synced < 2
 632 static inline void update_stats(int head)
 633 {
 634   if(head==0x1B6) ++num_elementary_packets1B6;
 635   else if(head==0x100) ++num_elementary_packets100;
 636   else if(head==0x101) ++num_elementary_packets101;
 637   else if(head==0x1BD || (0x1C0<=head && head<=0x1EF))
 638     num_elementary_packetsPES++;
 639   else if(head>=0x120 && head<=0x12F) ++num_elementary_packets12x;
 640   if(head>=0x100 && head<0x1B0)
 641   {
 642     if((head&~0x60) == 0x101) ++num_h264_slice;
 643     else if((head&~0x60) == 0x102) ++num_h264_dpa;
 644     else if((head&~0x60) == 0x103) ++num_h264_dpb;
 645     else if((head&~0x60) == 0x104) ++num_h264_dpc;
 646     else if((head&~0x60) == 0x105 && head != 0x105) ++num_h264_idr;
 647     else if((head&~0x60) == 0x107 && head != 0x107) ++num_h264_sps;
 648     else if((head&~0x60) == 0x108 && head != 0x108) ++num_h264_pps;
 649   }
 650 }
 651
 652 static int demux_mpg_probe(demuxer_t *demuxer) {
 653   int pes=1;
 654   int tmp;
 655   off_t tmppos;
 656   int file_format = DEMUXER_TYPE_UNKNOWN;
 657
 658   tmppos=stream_tell(demuxer->stream);
 659   tmp=stream_read_dword(demuxer->stream);
 660   if(tmp==0x1E0 || tmp==0x1C0) {
 661     tmp=stream_read_word(demuxer->stream);
 662     if(tmp>1 && tmp<=2048) pes=0; // demuxer->synced=3; // PES...
 663   }
 664   stream_seek(demuxer->stream,tmppos);
 665
 666   clear_stats();
 667
 668   if(demux_mpg_open(demuxer))
 669     file_format=DEMUXER_TYPE_MPEG_PS;
 670   else {
 671     mp_msg(MSGT_DEMUX,MSGL_V,"MPEG packet stats: p100: %d  p101: %d p1B6: %d p12x: %d sli: %d a: %d b: %d c: %d idr: %d sps: %d pps: %d PES: %d  MP3: %d, synced: %d\n",
 672      num_elementary_packets100,num_elementary_packets101,
 673      num_elementary_packets1B6,num_elementary_packets12x,
 674      num_h264_slice, num_h264_dpa,
 675      num_h264_dpb, num_h264_dpc=0,
 676      num_h264_idr, num_h264_sps=0,
 677      num_h264_pps,
 678      num_elementary_packetsPES,num_mp3audio_packets, demuxer->synced);
 679
 680      //MPEG packet stats: p100: 458  p101: 458  PES: 0  MP3: 1103  (.m2v)
 681      if(num_mp3audio_packets>50 && num_mp3audio_packets>2*num_elementary_packets100
 682         && abs(num_elementary_packets100-num_elementary_packets101)>2)
 683        return file_format;
 684
 685       // some hack to get meaningfull error messages to our unhappy users:
 686       if(num_elementary_packets100>=2 && num_elementary_packets101>=2 &&
 687          abs(num_elementary_packets101+8-num_elementary_packets100)<16) {
 688          if(num_elementary_packetsPES>=4 && num_elementary_packetsPES>=num_elementary_packets100-4) {
 689            return file_format;
 690          }
 691          file_format=DEMUXER_TYPE_MPEG_ES; //  <-- hack is here :)
 692       } else
 693           // fuzzy mpeg4-es detection. do NOT enable without heavy testing of mpeg formats detection!
 694         if(num_elementary_packets1B6>3 && num_elementary_packets12x>=1 &&
 695            num_elementary_packetsPES==0 && num_elementary_packets100<=num_elementary_packets12x &&
 696            demuxer->synced<2) {
 697              file_format=DEMUXER_TYPE_MPEG4_ES;
 698         } else
 699          // fuzzy h264-es detection. do NOT enable without heavy testing of mpeg formats detection!
 700         if((num_h264_slice>3 || (num_h264_dpa>3 && num_h264_dpb>3 && num_h264_dpc>3)) &&
 701           /* FIXME num_h264_sps>=1 && */ num_h264_pps>=1 && num_h264_idr>=1 &&
 702           num_elementary_packets1B6==0 && num_elementary_packetsPES==0 &&
 703           demuxer->synced<2) {
 704             file_format=DEMUXER_TYPE_H264_ES;
 705         } else
 706         {
 707           if(demuxer->synced==2)
 708             mp_msg(MSGT_DEMUXER,MSGL_ERR,"MPEG: " MSGTR_MissingVideoStreamBug);
 709           else
 710             mp_msg(MSGT_DEMUXER,MSGL_V,MSGTR_NotSystemStream);
 711         }
 712   }
 713   //FIXME this shouldn't be necessary
 714   stream_seek(demuxer->stream,tmppos);
 715   return file_format;
 716 }
 717
 718 static int demux_mpg_es_fill_buffer(demuxer_t *demux, demux_stream_t *ds){
 719   // Elementary video stream
 720   if(demux->stream->eof) return 0;
 721   demux->filepos=stream_tell(demux->stream);
 722   ds_read_packet(demux->video,demux->stream,STREAM_BUFFER_SIZE,0,demux->filepos,0);
 723   return 1;
 724 }
 725
 726 /**
 727  * \brief discard until 0x100 header and return a filled buffer
 728  * \param b buffer-end pointer
 729  * \param pos current pos in stream, negative since b points to end of buffer
 730  * \param s stream to read from
 731  * \return new position, differs from original pos when eof hit and thus
 732  *             b was modified to point to the new end of buffer
 733  */
 734 static int find_end(unsigned char **b, int pos, stream_t *s) {
 735   register int state = 0xffffffff;
 736   unsigned char *buf = *b;
 737   int start = pos;
 738   int read, unused;
 739   // search already read part
 740   while (state != 0x100 && pos) {
 741     state = state << 8 | buf[pos++];
 742   }
 743   // continue search in stream
 744   while (state != 0x100) {
 745     register int c = stream_read_char(s);
 746     if (c < 0) break;
 747     state = state << 8 | c;
 748   }
 749   // modify previous header (from 0x1bc or 0x1bf to 0x100)
 750   buf[start++] = 0;
 751   // copy remaining buffer part to current pos
 752   memmove(&buf[start], &buf[pos], -pos);
 753   unused = start + -pos; // -unused bytes in buffer
 754   read = stream_read(s, &buf[unused], -unused);
 755   unused += read;
 756   // fix buffer so it ends at pos == 0 (eof case)
 757   *b = &buf[unused];
 758   start -= unused;
 759   return start;
 760 }
 761
 762 /**
 763  * This format usually uses an insane bitrate, which makes this function
 764  * performance-critical!
 765  * Be sure to benchmark any changes with different compiler versions.
 766  */
 767 static int demux_mpg_gxf_fill_buffer(demuxer_t *demux, demux_stream_t *ds) {
 768   demux_packet_t *pack;
 769   int len;
 770   demux->filepos = stream_tell(demux->stream);
 771   pack = new_demux_packet(STREAM_BUFFER_SIZE);
 772   len = stream_read(demux->stream, pack->buffer, STREAM_BUFFER_SIZE);
 773   if (len <= 0)
 774   {
 775     free_demux_packet(pack);
 776     return 0;
 777   }
 778   {
 779     register uint32_t state = (uint32_t)demux->priv;
 780     register int pos = -len;
 781     unsigned char *buf = &pack->buffer[len];
 782     do {
 783       state = state << 8 | buf[pos];
 784       if (unlikely((state | 3) == 0x1bf))
 785         pos = find_end(&buf, pos, demux->stream);
 786     } while (++pos < 0);
 787     demux->priv = (void *)state;
 788     len = buf - pack->buffer;
 789   }
 790   if (len < STREAM_BUFFER_SIZE)
 791     resize_demux_packet(pack, len);
 792   ds_add_packet(ds, pack);
 793   return 1;
 794 }
 795
 796 int demux_mpg_fill_buffer(demuxer_t *demux, demux_stream_t *ds){
 797 unsigned int head=0;
 798 int skipped=0;
 799 int max_packs=256; // 512kbyte
 800 int ret=0;
 801
 802 // System stream
 803 do{
 804   demux->filepos=stream_tell(demux->stream);
 805 #if 1
 806   //lame workaround: this is needed to show the progress bar when playing dvdnav://
 807   //(ths poor guy doesn't know teh length of the stream at startup)
 808   demux->movi_end = demux->stream->end_pos;
 809 #endif
 810   head=stream_read_dword(demux->stream);
 811   if((head&0xFFFFFF00)!=0x100){
 812    // sync...
 813    demux->filepos-=skipped;
 814    while(1){
 815     int c=stream_read_char(demux->stream);
 816     if(c<0) break; //EOF
 817     head<<=8;
 818     if(head!=0x100){
 819       head|=c;
 820       if(mp_check_mp3_header(head)) ++num_mp3audio_packets;
 821       ++skipped; //++demux->filepos;
 822       continue;
 823     }
 824     head|=c;
 825     break;
 826    }
 827    demux->filepos+=skipped;
 828   }
 829   if(stream_eof(demux->stream)) break;
 830   // sure: head=0x000001XX
 831   mp_dbg(MSGT_DEMUX,MSGL_DBG4,"*** head=0x%X\n",head);
 832   if(demux->synced==0){
 833     if(head==0x1BA) demux->synced=1; //else
 834 //    if(head==0x1BD || (head>=0x1C0 && head<=0x1EF)) demux->synced=3; // PES?
 835   } else
 836   if(demux->synced==1){
 837     if(head==0x1BB || head==0x1BD || (head>=0x1C0 && head<=0x1EF)){
 838       demux->synced=2;
 839       mp_msg(MSGT_DEMUX,MSGL_V,"system stream synced at 0x%"PRIX64" (%"PRId64")!\n",(int64_t)demux->filepos,(int64_t)demux->filepos);
 840       num_elementary_packets100=0; // requires for re-sync!
 841       num_elementary_packets101=0; // requires for re-sync!
 842     } else demux->synced=0;
 843   } // else
 844   if(demux->synced>=2){
 845       ret=demux_mpg_read_packet(demux,head);
 846       if(!ret)
 847         if(--max_packs==0){
 848           demux->stream->eof=1;
 849           mp_msg(MSGT_DEMUX,MSGL_ERR,MSGTR_DoesntContainSelectedStream);
 850           return 0;
 851         }
 852       if(demux->synced==3) demux->synced=(ret==1)?2:0; // PES detect
 853   } else {
 854     update_stats(head);
 855     if(head>=0x100 && head<0x1B0)
 856       mp_msg(MSGT_DEMUX,MSGL_DBG3,"Opps... elementary video packet found: %03X\n",head);
 857     else if((head>=0x1C0 && head<0x1F0) || head==0x1BD)
 858       mp_msg(MSGT_DEMUX,MSGL_DBG3,"Opps... PES packet found: %03X\n",head);
 859
 860     if(((num_elementary_packets100>50 && num_elementary_packets101>50) ||
 861         (num_elementary_packetsPES>50)) && skipped>4000000){
 862         mp_msg(MSGT_DEMUX,MSGL_V,"sync_mpeg_ps: seems to be ES/PES stream...\n");
 863         demux->stream->eof=1;
 864         break;
 865     }
 866     if(num_mp3audio_packets>100 && num_elementary_packets100<10){
 867         mp_msg(MSGT_DEMUX,MSGL_V,"sync_mpeg_ps: seems to be MP3 stream...\n");
 868         demux->stream->eof=1;
 869         break;
 870     }
 871   }
 872 } while(ret!=1);
 873   mp_dbg(MSGT_DEMUX,MSGL_DBG2,"demux: %d bad bytes skipped\n",skipped);
 874   if(demux->stream->eof){
 875     mp_msg(MSGT_DEMUX,MSGL_V,"MPEG Stream reached EOF\n");
 876     return 0;
 877   }
 878   return 1;
 879 }
 880
 881 extern void skip_audio_frame(sh_audio_t *sh_audio);
 882
 883 void demux_seek_mpg(demuxer_t *demuxer,float rel_seek_secs,float audio_delay, int flags){
 884     demux_stream_t *d_audio=demuxer->audio;
 885     demux_stream_t *d_video=demuxer->video;
 886     sh_audio_t *sh_audio=d_audio->sh;
 887     sh_video_t *sh_video=d_video->sh;
 888     mpg_demuxer_t *mpg_d=(mpg_demuxer_t*)demuxer->priv;
 889     int precision = 1;
 890     float oldpts = 0;
 891     off_t oldpos = demuxer->filepos;
 892     float newpts = 0;
 893     off_t newpos = (flags & 1) ? demuxer->movi_start : oldpos;
 894
 895     if(mpg_d)
 896       oldpts = mpg_d->last_pts;
 897     newpts = (flags & 1) ? 0.0 : oldpts;
 898   //================= seek in MPEG ==========================
 899   //calculate the pts to seek to
 900     if(flags & 2) {
 901       if (mpg_d && mpg_d->first_to_final_pts_len > 0.0)
 902         newpts += mpg_d->first_to_final_pts_len * rel_seek_secs;
 903       else
 904         newpts += rel_seek_secs * (demuxer->movi_end - demuxer->movi_start) * oldpts / oldpos;
 905     } else
 906       newpts += rel_seek_secs;
 907     if (newpts < 0) newpts = 0;
 908
 909     if(flags&2){
 910         // float seek 0..1
 911         newpos+=(demuxer->movi_end-demuxer->movi_start)*rel_seek_secs;
 912     } else {
 913         // time seek (secs)
 914         if (mpg_d && mpg_d->has_valid_timestamps) {
 915           if (mpg_d->first_to_final_pts_len > 0.0)
 916             newpos += rel_seek_secs * (demuxer->movi_end - demuxer->movi_start) / mpg_d->first_to_final_pts_len;
 917           else if (oldpts > 0.0)
 918             newpos += rel_seek_secs * (oldpos - demuxer->movi_start) / oldpts;
 919         } else if(!sh_video || !sh_video->i_bps) // unspecified or VBR
 920           newpos+=2324*75*rel_seek_secs; // 174.3 kbyte/sec
 921         else
 922           newpos+=sh_video->i_bps*rel_seek_secs;
 923     }
 924
 925     while (1) {
 926         if(newpos<demuxer->movi_start){
 927             if(demuxer->stream->type!=STREAMTYPE_VCD) demuxer->movi_start=0; // for VCD
 928             if(newpos<demuxer->movi_start) newpos=demuxer->movi_start;
 929         }
 930
 931         stream_seek(demuxer->stream,newpos);
 932
 933         // re-sync video:
 934         videobuf_code_len=0; // reset ES stream buffer
 935
 936         ds_fill_buffer(d_video);
 937         if(sh_audio){
 938           ds_fill_buffer(d_audio);
 939         }
 940
 941         while(1){
 942           int i;
 943           if(sh_audio && !d_audio->eof && d_video->pts && d_audio->pts){
 944             float a_pts=d_audio->pts;
 945             a_pts+=(ds_tell_pts(d_audio)-sh_audio->a_in_buffer_len)/(float)sh_audio->i_bps;
 946             if(d_video->pts>a_pts){
 947               skip_audio_frame(sh_audio);  // sync audio
 948               continue;
 949             }
 950           }
 951           if(!sh_video) break;
 952           i=sync_video_packet(d_video);
 953           if(sh_video->format == mmioFOURCC('W', 'V', 'C', '1')) {
 954             if(i==0x10E || i==0x10F) //entry point or sequence header
 955               break;
 956           } else
 957           if(sh_video->format == 0x10000004) {  //mpeg4
 958             if(i==0x1B6) {                      //vop (frame) startcode
 959               int pos = videobuf_len;
 960               if(!read_video_packet(d_video)) break; // EOF
 961               if((videobuffer[pos+4] & 0x3F) == 0) break;       //I-frame
 962             }
 963           } else if(sh_video->format == 0x10000005){    //h264
 964             if((i & ~0x60) == 0x105) break;
 965           } else {      //default mpeg1/2
 966             if(i==0x1B3 || i==0x1B8) break; // found it!
 967           }
 968           if(!i || !skip_video_packet(d_video)) break; // EOF?
 969         }
 970         if(!mpg_d)
 971           break;
 972         if (!precision || abs(newpts - mpg_d->last_pts) < 0.5 || (mpg_d->last_pts == oldpts)) break;
 973         if ((newpos - oldpos) * (mpg_d->last_pts - oldpts) < 0) { // invalid timestamps
 974           mpg_d->has_valid_timestamps = 0;
 975           break;
 976         }
 977         precision--;
 978         //prepare another seek because we are off by more than 0.5s
 979         if(mpg_d) {
 980         newpos += (newpts - mpg_d->last_pts) * (newpos - oldpos) / (mpg_d->last_pts - oldpts);
 981         ds_free_packs(d_audio);
 982         ds_free_packs(d_video);
 983         ds_free_packs(demuxer->sub);
 984         demuxer->stream->eof=0; // clear eof flag
 985         d_video->eof=0;
 986         d_audio->eof=0;
 987         }
 988     }
 989 }
 990
 991 int demux_mpg_control(demuxer_t *demuxer,int cmd, void *arg){
 992     mpg_demuxer_t *mpg_d=(mpg_demuxer_t*)demuxer->priv;
 993
 994     switch(cmd) {
 995         case DEMUXER_CTRL_GET_TIME_LENGTH:
 996             if(stream_control(demuxer->stream, STREAM_CTRL_GET_TIME_LENGTH, arg) != STREAM_UNSUPPORTED) {
 997               mp_msg(MSGT_DEMUXER,MSGL_DBG2,"\r\nDEMUX_MPG_CTRL, (%.3lf)\r\n", *((double*)arg));
 998               return DEMUXER_CTRL_GUESS;
 999             }
1000             if (mpg_d && mpg_d->has_valid_timestamps) {
1001               *((double *)arg)=(double)mpg_d->first_to_final_pts_len;
1002               return DEMUXER_CTRL_OK;
1003             }
1004                 return DEMUXER_CTRL_DONTKNOW;
1005
1006         case DEMUXER_CTRL_GET_PERCENT_POS:
1007             if (mpg_d && mpg_d->has_valid_timestamps && mpg_d->first_to_final_pts_len > 0.0) {
1008               *((int *)arg)=(int)(100 * (mpg_d->last_pts-mpg_d->first_pts) / mpg_d->first_to_final_pts_len);
1009               return DEMUXER_CTRL_OK;
1010             }
1011             return DEMUXER_CTRL_DONTKNOW;
1012
1013         case DEMUXER_CTRL_SWITCH_AUDIO:
1014             if(! (mpg_d && mpg_d->num_a_streams > 1 && demuxer->audio && demuxer->audio->sh))
1015               return DEMUXER_CTRL_NOTIMPL;
1016             else {
1017               demux_stream_t *d_audio = demuxer->audio;
1018               sh_audio_t *sh_audio = d_audio->sh;
1019               sh_audio_t *sh_a = sh_audio;
1020               int i;
1021               if(!sh_audio)
1022                 return DEMUXER_CTRL_NOTIMPL;
1023               if (*((int*)arg) < 0)
1024               {
1025               for (i = 0; i < mpg_d->num_a_streams; i++) {
1026                 if (d_audio->id == mpg_d->a_stream_ids[i]) break;
1027               }
1028                 i = (i+1) % mpg_d->num_a_streams;
1029                 sh_a = (sh_audio_t*)demuxer->a_streams[mpg_d->a_stream_ids[i]];
1030               }
1031               else {
1032                 for (i = 0; i < mpg_d->num_a_streams; i++)
1033                   if (*((int*)arg) == mpg_d->a_stream_ids[i]) break;
1034                 if (i < mpg_d->num_a_streams)
1035                   sh_a = (sh_audio_t*)demuxer->a_streams[*((int*)arg)];
1036               }
1037               if (i < mpg_d->num_a_streams && d_audio->id != mpg_d->a_stream_ids[i]) {
1038                 d_audio->id = mpg_d->a_stream_ids[i];
1039                 d_audio->sh = sh_a;
1040                 ds_free_packs(d_audio);
1041               }
1042             }
1043             *((int*)arg) = demuxer->audio->id;
1044             return DEMUXER_CTRL_OK;
1045
1046         default:
1047             return DEMUXER_CTRL_NOTIMPL;
1048     }
1049 }
1050
1051
1052 static int demux_mpg_pes_probe(demuxer_t *demuxer) {
1053    demuxer->synced = 3;
1054    return (demux_mpg_probe(demuxer) == DEMUXER_TYPE_MPEG_PS) ? DEMUXER_TYPE_MPEG_PES : 0;
1055 }
1056
1057
1058 static demuxer_t* demux_mpg_es_open(demuxer_t* demuxer)
1059 {
1060     sh_video_t *sh_video=NULL;
1061
1062     demuxer->audio->sh = NULL;   // ES streams has no audio channel
1063     demuxer->video->sh = new_sh_video(demuxer,0); // create dummy video stream header, id=0
1064     sh_video=demuxer->video->sh;sh_video->ds=demuxer->video;
1065
1066     return demuxer;
1067 }
1068
1069 static demuxer_t *demux_mpg_gxf_open(demuxer_t *demuxer) {
1070   demuxer->audio->sh = NULL;
1071   demuxer->video->sh = new_sh_video(demuxer,0);
1072   ((sh_video_t *)demuxer->video->sh)->ds = demuxer->video;
1073   demuxer->priv = (void *) 0xffffffff;
1074   return demuxer;
1075 }
1076
1077 static demuxer_t* demux_mpg_ps_open(demuxer_t* demuxer)
1078 {
1079     sh_audio_t *sh_audio=NULL;
1080     sh_video_t *sh_video=NULL;
1081
1082     sh_video=demuxer->video->sh;sh_video->ds=demuxer->video;
1083
1084     if(demuxer->audio->id!=-2) {
1085         if(!ds_fill_buffer(demuxer->audio)){
1086             mp_msg(MSGT_DEMUXER,MSGL_INFO,"MPEG: " MSGTR_MissingAudioStream);
1087             demuxer->audio->sh=NULL;
1088         } else {
1089             sh_audio=demuxer->audio->sh;sh_audio->ds=demuxer->audio;
1090         }
1091     }
1092
1093     if(!sh_video->format && ps_probe > 0) {
1094         int head;
1095         off_t pos = stream_tell(demuxer->stream);
1096
1097         clear_stats();
1098         do {
1099             head=sync_video_packet(demuxer->video);
1100             if(!head) break;
1101             update_stats(head);
1102             skip_video_packet(demuxer->video);
1103         } while(stream_tell(demuxer->stream) < pos + ps_probe && !demuxer->stream->eof);
1104
1105         ds_free_packs(demuxer->video);
1106         demuxer->stream->eof=0;
1107         stream_seek(demuxer->stream, pos);
1108         mp_msg(MSGT_DEMUX,MSGL_INFO,"MPEG packet stats: p100: %d  p101: %d p1B6: %d p12x: %d sli: %d a: %d b: %d c: %d idr: %d sps: %d pps: %d\n",
1109             num_elementary_packets100, num_elementary_packets101,
1110             num_elementary_packets1B6, num_elementary_packets12x,
1111             num_h264_slice, num_h264_dpa, num_h264_dpb, num_h264_dpc,
1112             num_h264_idr, num_h264_sps, num_h264_pps);
1113
1114         if(num_elementary_packets1B6>3 && num_elementary_packets12x>=1 &&
1115             num_elementary_packets100<=num_elementary_packets12x)
1116             sh_video->format = 0x10000004;
1117         else if((num_h264_slice>3 || (num_h264_dpa>3 && num_h264_dpb>3 && num_h264_dpc>3)) &&
1118             num_h264_sps>=1 && num_h264_pps>=1 && num_h264_idr>=1 &&
1119             num_elementary_packets1B6==0)
1120                 sh_video->format = 0x10000005;
1121         else sh_video->format = 0x10000002;
1122     }
1123
1124     return demuxer;
1125 }
1126
1127
1128 demuxer_desc_t demuxer_desc_mpeg_ps = {
1129   "MPEG PS demuxer",
1130   "mpegps",
1131   "MPEG-PS",
1132   "Arpi?",
1133   "Mpeg",
1134   DEMUXER_TYPE_MPEG_PS,
1135   0, // unsafe autodetect
1136   demux_mpg_probe,
1137   demux_mpg_fill_buffer,
1138   demux_mpg_ps_open,
1139   demux_close_mpg,
1140   demux_seek_mpg,
1141   demux_mpg_control,
1142 };
1143
1144
1145 demuxer_desc_t demuxer_desc_mpeg_pes = {
1146   "MPEG PES demuxer",
1147   "mpegpes",
1148   "MPEG-PES",
1149   "Arpi?",
1150   "Mpeg",
1151   DEMUXER_TYPE_MPEG_PES,
1152   0, // unsafe autodetect
1153   demux_mpg_pes_probe,
1154   demux_mpg_fill_buffer,
1155   demux_mpg_ps_open,
1156   demux_close_mpg,
1157   demux_seek_mpg,
1158   demux_mpg_control,
1159 };
1160
1161
1162 demuxer_desc_t demuxer_desc_mpeg_gxf = {
1163   "MPEG ES in GXF demuxer",
1164   "mpeggxf",
1165   "MPEG-ES in GXF",
1166   "Reimar Doeffinger",
1167   "Mpeg",
1168   DEMUXER_TYPE_MPEG_GXF,
1169   0, // hack autodetection
1170   NULL,
1171   demux_mpg_gxf_fill_buffer,
1172   demux_mpg_gxf_open,
1173   NULL,
1174   NULL,
1175   NULL
1176 };
1177
1178 demuxer_desc_t demuxer_desc_mpeg_es = {
1179   "MPEG ES demuxer",
1180   "mpeges",
1181   "MPEG-ES",
1182   "Arpi?",
1183   "Mpeg",
1184   DEMUXER_TYPE_MPEG_ES,
1185   0, // hack autodetection
1186   NULL,
1187   demux_mpg_es_fill_buffer,
1188   demux_mpg_es_open,
1189   demux_close_mpg,
1190   demux_seek_mpg,
1191   demux_mpg_control,
1192 };
1193
1194
1195 demuxer_desc_t demuxer_desc_mpeg4_es = {
1196   "MPEG4 ES demuxer",
1197   "mpeg4es",
1198   "MPEG-ES",
1199   "Arpi?",
1200   "Mpeg",
1201   DEMUXER_TYPE_MPEG4_ES,
1202   0, // hack autodetection
1203   NULL,
1204   demux_mpg_es_fill_buffer,
1205   demux_mpg_es_open,
1206   demux_close_mpg,
1207   demux_seek_mpg,
1208   demux_mpg_control,
1209 };
1210
1211
1212 demuxer_desc_t demuxer_desc_h264_es = {
1213   "H.264 ES demuxer",
1214   "h264es",
1215   "H264-ES",
1216   "Arpi?",
1217   "Mpeg",
1218   DEMUXER_TYPE_H264_ES,
1219   0, // hack autodetection
1220   NULL,
1221   demux_mpg_es_fill_buffer,
1222   demux_mpg_es_open,
1223   demux_close_mpg,
1224   demux_seek_mpg,
1225   demux_mpg_control,
1226 };