libmpdemux/aviheader.c

   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 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <unistd.h>
  22 #include <errno.h>
  23
  24 #include "config.h"
  25 #include "mp_msg.h"
  26
  27 #include "stream/stream.h"
  28 #include "demuxer.h"
  29 #include "stheader.h"
  30 #include "aviprint.h"
  31 #include "aviheader.h"
  32 #include "libavutil/common.h"
  33
  34 static MainAVIHeader avih;
  35
  36 static int odml_get_vstream_id(int id, unsigned char res[])
  37 {
  38     if ((char)(id >> 16) == 'd') {
  39         if (res) {
  40             res[0] = id;
  41             res[1] = id >> 8;
  42         }
  43         return 1;
  44     }
  45     return 0;
  46 }
  47
  48 static int avi_idx_cmp(const void *elem1, const void *elem2)
  49 {
  50   register off_t a = AVI_IDX_OFFSET((AVIINDEXENTRY *)elem1);
  51   register off_t b = AVI_IDX_OFFSET((AVIINDEXENTRY *)elem2);
  52   return (a > b) - (b > a);
  53 }
  54
  55 void read_avi_header(demuxer_t *demuxer,int index_mode){
  56 sh_audio_t *sh_audio=NULL;
  57 sh_video_t *sh_video=NULL;
  58 int stream_id=-1;
  59 int idxfix_videostream=0;
  60 int idxfix_divx=0;
  61 avi_priv_t* priv=demuxer->priv;
  62 off_t list_end=0;
  63
  64 //---- AVI header:
  65 priv->idx_size=0;
  66 priv->audio_streams=0;
  67 while(1){
  68   int id=stream_read_dword_le(demuxer->stream);
  69   unsigned chunksize,size2;
  70   static int last_fccType=0;
  71   static int last_fccHandler=0;
  72   char* hdr=NULL;
  73   //
  74   if(stream_eof(demuxer->stream)) break;
  75   // Imply -forceidx if -saveidx is specified
  76   if (index_file_save)
  77     index_mode = 2;
  78   //
  79   if(id==mmioFOURCC('L','I','S','T')){
  80     unsigned len=stream_read_dword_le(demuxer->stream);   // list size
  81     id=stream_read_dword_le(demuxer->stream);             // list type
  82     mp_msg(MSGT_HEADER,MSGL_DBG2,"LIST %.4s  len=%u\n",(char *) &id,len);
  83     if(len >= 4) {
  84         len -= 4;
  85         list_end=stream_tell(demuxer->stream)+((len+1)&(~1));
  86     } else {
  87         mp_tmsg(MSGT_HEADER,MSGL_WARN,"** empty list?!\n");
  88         list_end = 0;
  89     }
  90     mp_msg(MSGT_HEADER,MSGL_V,"list_end=0x%X\n",(int)list_end);
  91     if(id==listtypeAVIMOVIE){
  92       // found MOVI header
  93       if(!demuxer->movi_start) demuxer->movi_start=stream_tell(demuxer->stream);
  94       demuxer->movi_end=stream_tell(demuxer->stream)+len;
  95       mp_tmsg(MSGT_HEADER,MSGL_V,"Found movie at 0x%X - 0x%X\n",(int)demuxer->movi_start,(int)demuxer->movi_end);
  96       if(demuxer->stream->end_pos>demuxer->movi_end) demuxer->movi_end=demuxer->stream->end_pos;
  97       if(index_mode==-2 || index_mode==2 || index_mode==0)
  98         break; // reading from non-seekable source (stdin) or forced index or no index forced
  99       if(list_end>0) stream_seek(demuxer->stream,list_end); // skip movi
 100       list_end=0;
 101     }
 102     continue;
 103   }
 104   size2=stream_read_dword_le(demuxer->stream);
 105   mp_msg(MSGT_HEADER,MSGL_DBG2,"CHUNK %.4s  len=%u\n",(char *) &id,size2);
 106   chunksize=(size2+1)&(~1);
 107   switch(id){
 108
 109     // Indicates where the subject of the file is archived
 110     case mmioFOURCC('I','A','R','L'): hdr="Archival Location";break;
 111     // Lists the artist of the original subject of the file;
 112     // for example, "Michaelangelo."
 113     case mmioFOURCC('I','A','R','T'): hdr="Artist";break;
 114     // Lists the name of the person or organization that commissioned
 115     // the subject of the file; for example "Pope Julian II."
 116     case mmioFOURCC('I','C','M','S'): hdr="Commissioned";break;
 117     // Provides general comments about the file or the subject
 118     // of the file. If the comment is several sentences long, end each
 119     // sentence with a period. Do not include new-line characters.
 120     case mmioFOURCC('I','C','M','T'): hdr="Comments";break;
 121     // Records the copyright information for the file; for example,
 122     // "Copyright Encyclopedia International 1991." If there are multiple
 123     // copyrights, separate them by semicolon followed by a space.
 124     case mmioFOURCC('I','C','O','P'): hdr="Copyright";break;
 125     // Describes whether an image has been cropped and, if so, how it
 126     // was cropped; for example, "lower-right corner."
 127     case mmioFOURCC('I','C','R','D'): hdr="Creation Date";break;
 128     // Describes whether an image has been cropped and, if so, how it
 129     // was cropped; for example, "lower-right corner."
 130     case mmioFOURCC('I','C','R','P'): hdr="Cropped";break;
 131     // Specifies the size of the original subject of the file; for
 132     // example, "8.5 in h, 11 in w."
 133     case mmioFOURCC('I','D','I','M'): hdr="Dimensions";break;
 134     // Stores dots per inch setting of the digitizer used to
 135     // produce the file, such as "300."
 136     case mmioFOURCC('I','D','P','I'): hdr="Dots Per Inch";break;
 137     // Stores the of the engineer who worked on the file. If there are
 138     // multiple engineers, separate the names by a semicolon and a blank;
 139     // for example, "Smith, John; Adams, Joe."
 140     case mmioFOURCC('I','E','N','G'): hdr="Engineer";break;
 141     // Describes the original work, such as "landscape,", "portrait,"
 142     // "still liefe," etc.
 143     case mmioFOURCC('I','G','N','R'): hdr="Genre";break;
 144     // Provides a list of keywords that refer to the file or subject of the
 145     // file. Separate multiple keywords with a semicolon and a blank;
 146     // for example, "Seattle, aerial view; scenery."
 147     case mmioFOURCC('I','K','E','Y'): hdr="Keywords";break;
 148     // ILGT - Describes the changes in the lightness settings on the digitizer
 149     // required to produce the file. Note that the format of this information
 150     // depends on the hardware used.
 151     case mmioFOURCC('I','L','G','T'): hdr="Lightness";break;
 152     // IMED - Decribes the original subject of the file, such as
 153     // "computer image," "drawing," "lithograph," and so on.
 154     case mmioFOURCC('I','M','E','D'): hdr="Medium";break;
 155     // INAM - Stores the title of the subject of the file, such as
 156     // "Seattle from Above."
 157     case mmioFOURCC('I','N','A','M'): hdr="Title";break;
 158     // IPLT - Specifies the number of colors requested when digitizing
 159     // an image, such as "256."
 160     case mmioFOURCC('I','P','L','T'): hdr="Palette Setting";break;
 161     // IPRD - Specifies the name of title the file was originally intended
 162     // for, such as "Encyclopedia of Pacific Northwest Geography."
 163     case mmioFOURCC('I','P','R','D'): hdr="Product";break;
 164     // ISBJ - Decsribes the contents of the file, such as
 165     // "Aerial view of Seattle."
 166     case mmioFOURCC('I','S','B','J'): hdr="Subject";break;
 167     // ISFT - Identifies the name of the software packages used to create the
 168     // file, such as "Microsoft WaveEdit"
 169     case mmioFOURCC('I','S','F','T'): hdr="Software";break;
 170     // ISHP - Identifies the change in sharpness for the digitizer
 171     // required to produce the file (the format depends on the hardware used).
 172     case mmioFOURCC('I','S','H','P'): hdr="Sharpness";break;
 173     // ISRC - Identifies the name of the person or organization who
 174     // supplied the original subject of the file; for example, "Try Research."
 175     case mmioFOURCC('I','S','R','C'): hdr="Source";break;
 176     // ISRF - Identifies the original form of the material that was digitized,
 177     // such as "slide," "paper," "map," and so on. This is not necessarily
 178     // the same as IMED
 179     case mmioFOURCC('I','S','R','F'): hdr="Source Form";break;
 180     // ITCH - Identifies the technician who digitized the subject file;
 181     // for example, "Smith, John."
 182     case mmioFOURCC('I','T','C','H'): hdr="Technician";break;
 183     case mmioFOURCC('I','S','M','P'): hdr="Time Code";break;
 184     case mmioFOURCC('I','D','I','T'): hdr="Digitization Time";break;
 185
 186     case ckidAVIMAINHDR:          // read 'avih'
 187       stream_read(demuxer->stream,(char*) &avih,FFMIN(size2,sizeof(avih)));
 188       le2me_MainAVIHeader(&avih); // swap to machine endian
 189       chunksize-=FFMIN(size2,sizeof(avih));
 190       if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_avih(&avih,MSGL_V); // else print_avih_flags(&avih,MSGL_V);
 191       break;
 192     case ckidSTREAMHEADER: {      // read 'strh'
 193       AVIStreamHeader h;
 194       stream_read(demuxer->stream,(char*) &h,FFMIN(size2,sizeof(h)));
 195       le2me_AVIStreamHeader(&h);  // swap to machine endian
 196       chunksize-=FFMIN(size2,sizeof(h));
 197       ++stream_id;
 198       if(h.fccType==streamtypeVIDEO){
 199         sh_video=new_sh_video(demuxer,stream_id);
 200         mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Video stream found, -vid %d\n", "aviheader", stream_id);
 201         memcpy(&sh_video->video,&h,sizeof(h));
 202         sh_video->stream_delay = (float)sh_video->video.dwStart * sh_video->video.dwScale/sh_video->video.dwRate;
 203       } else
 204       if(h.fccType==streamtypeAUDIO){
 205         sh_audio=new_sh_audio(demuxer,stream_id);
 206         mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Audio stream found, -aid %d\n", "aviheader", stream_id);
 207         memcpy(&sh_audio->audio,&h,sizeof(h));
 208         sh_audio->stream_delay = (float)sh_audio->audio.dwStart * sh_audio->audio.dwScale/sh_audio->audio.dwRate;
 209         sh_audio->needs_parsing = 1;
 210       }
 211       last_fccType=h.fccType;
 212       last_fccHandler=h.fccHandler;
 213       if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_strh(&h,MSGL_V);
 214       break; }
 215     case mmioFOURCC('i', 'n', 'd', 'x'): {
 216       uint32_t i;
 217       avisuperindex_chunk *s;
 218
 219       if(!index_mode) break;
 220
 221       if(chunksize<=24){
 222         break;
 223       }
 224       priv->suidx_size++;
 225       priv->suidx = realloc_struct(priv->suidx, priv->suidx_size, sizeof (avisuperindex_chunk));
 226       s = &priv->suidx[priv->suidx_size-1];
 227
 228       chunksize-=24;
 229       memcpy(s->fcc, "indx", 4);
 230       s->dwSize = size2;
 231       s->wLongsPerEntry = stream_read_word_le(demuxer->stream);
 232       s->bIndexSubType = stream_read_char(demuxer->stream);
 233       s->bIndexType = stream_read_char(demuxer->stream);
 234       s->nEntriesInUse = stream_read_dword_le(demuxer->stream);
 235       *(uint32_t *)s->dwChunkId = stream_read_dword_le(demuxer->stream);
 236       stream_read(demuxer->stream, (char *)s->dwReserved, 3*4);
 237       memset(s->dwReserved, 0, 3*4);
 238
 239       print_avisuperindex_chunk(s,MSGL_V);
 240
 241       // Check and fix this useless crap
 242       if(s->wLongsPerEntry != sizeof (avisuperindex_entry)/4) {
 243           mp_msg (MSGT_HEADER, MSGL_WARN, "Broken super index chunk size: %u\n",s->wLongsPerEntry);
 244           s->wLongsPerEntry = sizeof(avisuperindex_entry)/4;
 245       }
 246       if( ((chunksize/4)/s->wLongsPerEntry) < s->nEntriesInUse){
 247         mp_msg (MSGT_HEADER, MSGL_WARN, "Broken super index chunk\n");
 248         s->nEntriesInUse = (chunksize/4)/s->wLongsPerEntry;
 249       }
 250
 251       s->aIndex = calloc(s->nEntriesInUse, sizeof (avisuperindex_entry));
 252       s->stdidx = calloc(s->nEntriesInUse, sizeof (avistdindex_chunk));
 253
 254       // now the real index of indices
 255       for (i=0; i<s->nEntriesInUse; i++) {
 256           chunksize-=16;
 257           s->aIndex[i].qwOffset = stream_read_qword_le(demuxer->stream);
 258           s->aIndex[i].dwSize = stream_read_dword_le(demuxer->stream);
 259           s->aIndex[i].dwDuration = stream_read_dword_le(demuxer->stream);
 260           mp_msg (MSGT_HEADER, MSGL_V, "ODML (%.4s): [%d] 0x%016"PRIx64" 0x%04x %u\n",
 261                   (s->dwChunkId), i,
 262                   (uint64_t)s->aIndex[i].qwOffset, s->aIndex[i].dwSize, s->aIndex[i].dwDuration);
 263       }
 264
 265       break; }
 266     case ckidSTREAMFORMAT: {      // read 'strf'
 267       if(last_fccType==streamtypeVIDEO){
 268         sh_video->bih=calloc(FFMAX(chunksize, sizeof(*sh_video->bih)), 1);
 269 //        sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize);
 270         mp_tmsg(MSGT_HEADER,MSGL_V,"Found 'bih', %u bytes of %d\n",chunksize,sizeof(*sh_video->bih));
 271         stream_read(demuxer->stream,(char*) sh_video->bih,chunksize);
 272         le2me_BITMAPINFOHEADER(sh_video->bih);  // swap to machine endian
 273         if (sh_video->bih->biSize > chunksize && sh_video->bih->biSize > sizeof(*sh_video->bih))
 274                 sh_video->bih->biSize = chunksize;
 275         // fixup MS-RLE header (seems to be broken for <256 color files)
 276         if(sh_video->bih->biCompression<=1 && sh_video->bih->biSize==40)
 277             sh_video->bih->biSize=chunksize;
 278         if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_video_header(sh_video->bih,MSGL_V);
 279         chunksize=0;
 280         sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale;
 281         sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate;
 282         sh_video->format = sh_video->bih->biCompression;
 283 //        if(demuxer->video->id==-1) demuxer->video->id=stream_id;
 284         // IdxFix:
 285         idxfix_videostream=stream_id;
 286         switch(sh_video->bih->biCompression){
 287         case mmioFOURCC('M', 'P', 'G', '4'):
 288         case mmioFOURCC('m', 'p', 'g', '4'):
 289         case mmioFOURCC('D', 'I', 'V', '1'):
 290           idxfix_divx=3; // set index recovery mpeg4 flavour: msmpeg4v1
 291           mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for M$ mpg4v1 video.\n");
 292           break;
 293         case mmioFOURCC('D', 'I', 'V', '3'):
 294         case mmioFOURCC('d', 'i', 'v', '3'):
 295         case mmioFOURCC('D', 'I', 'V', '4'):
 296         case mmioFOURCC('d', 'i', 'v', '4'):
 297         case mmioFOURCC('D', 'I', 'V', '5'):
 298         case mmioFOURCC('d', 'i', 'v', '5'):
 299         case mmioFOURCC('D', 'I', 'V', '6'):
 300         case mmioFOURCC('d', 'i', 'v', '6'):
 301         case mmioFOURCC('M', 'P', '4', '3'):
 302         case mmioFOURCC('m', 'p', '4', '3'):
 303         case mmioFOURCC('M', 'P', '4', '2'):
 304         case mmioFOURCC('m', 'p', '4', '2'):
 305         case mmioFOURCC('D', 'I', 'V', '2'):
 306         case mmioFOURCC('A', 'P', '4', '1'):
 307           idxfix_divx=1; // set index recovery mpeg4 flavour: msmpeg4v3
 308           mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for DIVX3 video.\n");
 309           break;
 310         case mmioFOURCC('D', 'I', 'V', 'X'):
 311         case mmioFOURCC('d', 'i', 'v', 'x'):
 312         case mmioFOURCC('D', 'X', '5', '0'):
 313         case mmioFOURCC('X', 'V', 'I', 'D'):
 314         case mmioFOURCC('x', 'v', 'i', 'd'):
 315         case mmioFOURCC('F', 'M', 'P', '4'):
 316         case mmioFOURCC('f', 'm', 'p', '4'):
 317           idxfix_divx=2; // set index recovery mpeg4 flavour: generic mpeg4
 318           mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for MPEG-4 video.\n");
 319           break;
 320         }
 321       } else
 322       if(last_fccType==streamtypeAUDIO){
 323         unsigned wf_size = chunksize<sizeof(*sh_audio->wf)?sizeof(*sh_audio->wf):chunksize;
 324         sh_audio->wf=calloc(wf_size,1);
 325 //        sh_audio->wf=malloc(chunksize); memset(sh_audio->wf,0,chunksize);
 326         mp_tmsg(MSGT_HEADER,MSGL_V,"Found 'wf', %d bytes of %d\n",chunksize,sizeof(*sh_audio->wf));
 327         stream_read(demuxer->stream,(char*) sh_audio->wf,chunksize);
 328         le2me_WAVEFORMATEX(sh_audio->wf);
 329         if (sh_audio->wf->cbSize != 0 &&
 330             wf_size < sizeof(*sh_audio->wf)+sh_audio->wf->cbSize) {
 331             sh_audio->wf=realloc(sh_audio->wf, sizeof(*sh_audio->wf)+sh_audio->wf->cbSize);
 332         }
 333         sh_audio->format=sh_audio->wf->wFormatTag;
 334         if (sh_audio->format == 1 &&
 335             last_fccHandler == mmioFOURCC('A', 'x', 'a', 'n'))
 336             sh_audio->format = last_fccHandler;
 337         sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
 338         chunksize=0;
 339         if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_wave_header(sh_audio->wf,MSGL_V);
 340         ++priv->audio_streams;
 341 //        if(demuxer->audio->id==-1) demuxer->audio->id=stream_id;
 342       }
 343       break;
 344     }
 345     case mmioFOURCC('v', 'p', 'r', 'p'): {
 346         VideoPropHeader *vprp = malloc(chunksize);
 347         unsigned int i;
 348         stream_read(demuxer->stream, (void*)vprp, chunksize);
 349         le2me_VideoPropHeader(vprp);
 350         chunksize -= sizeof(*vprp)-sizeof(vprp->FieldInfo);
 351         chunksize /= sizeof(VIDEO_FIELD_DESC);
 352         if (vprp->nbFieldPerFrame > chunksize) {
 353             vprp->nbFieldPerFrame = chunksize;
 354         }
 355         chunksize = 0;
 356         for (i=0; i<vprp->nbFieldPerFrame; i++) {
 357                 le2me_VIDEO_FIELD_DESC(&vprp->FieldInfo[i]);
 358         }
 359         if (sh_video) {
 360                 sh_video->aspect = GET_AVI_ASPECT(vprp->dwFrameAspectRatio);
 361         }
 362         if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_vprp(vprp,MSGL_V);
 363         free(vprp);
 364         break;
 365     }
 366     case mmioFOURCC('d', 'm', 'l', 'h'): {
 367         // dmlh 00 00 00 04 frms
 368         unsigned int total_frames = stream_read_dword_le(demuxer->stream);
 369         mp_tmsg(MSGT_HEADER,MSGL_V,"AVI: dmlh found (size=%d) (total_frames=%d)\n", chunksize, total_frames);
 370         stream_skip(demuxer->stream, chunksize-4);
 371         chunksize = 0;
 372     }
 373     break;
 374     case ckidAVINEWINDEX:
 375     if(demuxer->movi_end>stream_tell(demuxer->stream))
 376         demuxer->movi_end=stream_tell(demuxer->stream); // fixup movi-end
 377     if(index_mode && !priv->isodml){
 378       int i;
 379       priv->idx_size=size2>>4;
 380       mp_tmsg(MSGT_HEADER,MSGL_V,"Reading INDEX block, %d chunks for %d frames (fpos=%"PRId64").\n",
 381         priv->idx_size,avih.dwTotalFrames, (int64_t)stream_tell(demuxer->stream));
 382       priv->idx=malloc(priv->idx_size<<4);
 383 //      printf("\nindex to %p !!!!! (priv=%p)\n",priv->idx,priv);
 384       stream_read(demuxer->stream,(char*)priv->idx,priv->idx_size<<4);
 385       for (i = 0; i < priv->idx_size; i++) {    // swap index to machine endian
 386         AVIINDEXENTRY *entry=(AVIINDEXENTRY*)priv->idx + i;
 387         le2me_AVIINDEXENTRY(entry);
 388         /*
 389          * We (ab)use the upper word for bits 32-47 of the offset, so
 390          * we'll clear them here.
 391          * FIXME: AFAIK no codec uses them, but if one does it will break
 392          */
 393         entry->dwFlags&=0xffff;
 394       }
 395       chunksize-=priv->idx_size<<4;
 396       if( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx,priv->idx_size,MSGL_DBG2);
 397     }
 398     break;
 399     /* added May 2002 */
 400     case mmioFOURCC('R','I','F','F'): {
 401         char riff_type[4];
 402
 403         mp_tmsg(MSGT_HEADER, MSGL_V, "Additional RIFF header...\n");
 404         stream_read(demuxer->stream, riff_type, sizeof riff_type);
 405         if (strncmp(riff_type, "AVIX", sizeof riff_type))
 406             mp_tmsg(MSGT_HEADER, MSGL_WARN, "** Warning: this is no extended AVI header..\n");
 407         else {
 408                 /*
 409                  * We got an extended AVI header, so we need to switch to
 410                  * ODML to get seeking to work, provided we got indx chunks
 411                  * in the header (suidx_size > 0).
 412                  */
 413                 if (priv->suidx_size > 0)
 414                         priv->isodml = 1;
 415         }
 416         chunksize = 0;
 417         list_end = 0; /* a new list will follow */
 418         break; }
 419     case ckidAVIPADDING:
 420         stream_skip(demuxer->stream, chunksize);
 421         chunksize = 0;
 422         break;
 423   }
 424   if(hdr){
 425     mp_msg(MSGT_HEADER,MSGL_V,"hdr=%s  size=%u\n",hdr,size2);
 426     if(size2==3)
 427       chunksize=1; // empty
 428     else {
 429       char buf[256];
 430       int len=(size2<250)?size2:250;
 431       stream_read(demuxer->stream,buf,len);
 432       chunksize-=len;
 433       buf[len]=0;
 434       mp_msg(MSGT_HEADER,MSGL_V,"%-10s: %s\n",hdr,buf);
 435       demux_info_add(demuxer, hdr, buf);
 436     }
 437   }
 438   mp_msg(MSGT_HEADER,MSGL_DBG2,"list_end=0x%"PRIX64"  pos=0x%"PRIX64"  chunksize=0x%"PRIX64"  next=0x%"PRIX64"\n",
 439       (int64_t)list_end, (int64_t)stream_tell(demuxer->stream),
 440       (int64_t)chunksize, (int64_t)chunksize+(int64_t)stream_tell(demuxer->stream));
 441   if(list_end>0 &&
 442      chunksize+stream_tell(demuxer->stream) == list_end) list_end=0;
 443   if(list_end>0 && chunksize+stream_tell(demuxer->stream)>list_end){
 444       mp_tmsg(MSGT_HEADER,MSGL_V,"Broken chunk?  chunksize=%d  (id=%.4s)\n",chunksize,(char *) &id);
 445       stream_seek(demuxer->stream,list_end);
 446       list_end=0;
 447   } else
 448   if(chunksize>0) stream_skip(demuxer->stream,chunksize); else
 449   if((int)chunksize<0) mp_msg(MSGT_HEADER,MSGL_WARN,"chunksize=%u  (id=%.4s)\n",chunksize,(char *) &id);
 450
 451 }
 452
 453 if (priv->suidx_size > 0 && priv->idx_size == 0) {
 454     /*
 455      * No NEWAVIINDEX, but we got an OpenDML index.
 456      */
 457     priv->isodml = 1;
 458 }
 459
 460 if (priv->isodml && (index_mode==-1 || index_mode==0 || index_mode==1)) {
 461     int i, j, k;
 462
 463     avisuperindex_chunk *cx;
 464     AVIINDEXENTRY *idx;
 465
 466
 467     if (priv->idx_size) free(priv->idx);
 468     priv->idx_size = 0;
 469     priv->idx_offset = 0;
 470     priv->idx = NULL;
 471
 472     mp_tmsg(MSGT_HEADER, MSGL_INFO, "AVI: ODML: Building ODML index (%d superindexchunks).\n", priv->suidx_size);
 473
 474     // read the standard indices
 475     for (cx = &priv->suidx[0], i=0; i<priv->suidx_size; cx++, i++) {
 476         stream_reset(demuxer->stream);
 477         for (j=0; j<cx->nEntriesInUse; j++) {
 478             int ret1, ret2;
 479             memset(&cx->stdidx[j], 0, 32);
 480             ret1 = stream_seek(demuxer->stream, (off_t)cx->aIndex[j].qwOffset);
 481             ret2 = stream_read(demuxer->stream, (char *)&cx->stdidx[j], 32);
 482             if (ret1 != 1 || ret2 != 32 || cx->stdidx[j].nEntriesInUse==0) {
 483                 // this is a broken file (probably incomplete) let the standard
 484                 // gen_index routine handle this
 485                 priv->isodml = 0;
 486                 priv->idx_size = 0;
 487                 mp_tmsg(MSGT_HEADER, MSGL_WARN, "AVI: ODML: Broken (incomplete?) file detected. Will use traditional index.\n");
 488                 goto freeout;
 489             }
 490
 491             le2me_AVISTDIDXCHUNK(&cx->stdidx[j]);
 492             print_avistdindex_chunk(&cx->stdidx[j],MSGL_V);
 493             priv->idx_size += cx->stdidx[j].nEntriesInUse;
 494             cx->stdidx[j].aIndex = malloc(cx->stdidx[j].nEntriesInUse*sizeof(avistdindex_entry));
 495             stream_read(demuxer->stream, (char *)cx->stdidx[j].aIndex,
 496                     cx->stdidx[j].nEntriesInUse*sizeof(avistdindex_entry));
 497             for (k=0;k<cx->stdidx[j].nEntriesInUse; k++)
 498                 le2me_AVISTDIDXENTRY(&cx->stdidx[j].aIndex[k]);
 499
 500             cx->stdidx[j].dwReserved3 = 0;
 501
 502         }
 503     }
 504
 505     /*
 506      * We convert the index by translating all entries into AVIINDEXENTRYs
 507      * and sorting them by offset.  The result should be the same index
 508      * we would get with -forceidx.
 509      */
 510
 511     idx = priv->idx = malloc(priv->idx_size * sizeof (AVIINDEXENTRY));
 512
 513     for (cx = priv->suidx; cx != &priv->suidx[priv->suidx_size]; cx++) {
 514         avistdindex_chunk *sic;
 515         for (sic = cx->stdidx; sic != &cx->stdidx[cx->nEntriesInUse]; sic++) {
 516             avistdindex_entry *sie;
 517             for (sie = sic->aIndex; sie != &sic->aIndex[sic->nEntriesInUse]; sie++) {
 518                 uint64_t off = sic->qwBaseOffset + sie->dwOffset - 8;
 519                 memcpy(&idx->ckid, sic->dwChunkId, 4);
 520                 idx->dwChunkOffset = off;
 521                 idx->dwFlags = (off >> 32) << 16;
 522                 idx->dwChunkLength = sie->dwSize & 0x7fffffff;
 523                 idx->dwFlags |= (sie->dwSize&0x80000000)?0x0:AVIIF_KEYFRAME; // bit 31 denotes !keyframe
 524                 idx++;
 525             }
 526         }
 527     }
 528     qsort(priv->idx, priv->idx_size, sizeof(AVIINDEXENTRY), avi_idx_cmp);
 529
 530     /*
 531        Hack to work around a "wrong" index in some divx odml files
 532        (processor_burning.avi as an example)
 533        They have ##dc on non keyframes but the ix00 tells us they are ##db.
 534        Read the fcc of a non-keyframe vid frame and check it.
 535      */
 536
 537     {
 538         uint32_t id;
 539         uint32_t db = 0;
 540         stream_reset (demuxer->stream);
 541
 542         // find out the video stream id. I have seen files with 01db.
 543         for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){
 544             unsigned char res[2];
 545             if (odml_get_vstream_id(idx->ckid, res)) {
 546                 db = mmioFOURCC(res[0], res[1], 'd', 'b');
 547                 break;
 548             }
 549         }
 550
 551         // find first non keyframe
 552         for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){
 553             if (!(idx->dwFlags & AVIIF_KEYFRAME) && idx->ckid == db) break;
 554         }
 555         if (i<priv->idx_size && db) {
 556             stream_seek(demuxer->stream, AVI_IDX_OFFSET(idx));
 557             id = stream_read_dword_le(demuxer->stream);
 558             if (id && id != db) // index fcc and real fcc differ? fix it.
 559                 for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){
 560                     if (!(idx->dwFlags & AVIIF_KEYFRAME) && idx->ckid == db)
 561                         idx->ckid = id;
 562             }
 563         }
 564     }
 565
 566     if ( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx, priv->idx_size,MSGL_DBG2);
 567
 568     demuxer->movi_end=demuxer->stream->end_pos;
 569
 570 freeout:
 571
 572     // free unneeded stuff
 573     cx = &priv->suidx[0];
 574     do {
 575         for (j=0;j<cx->nEntriesInUse;j++)
 576             if (cx->stdidx[j].nEntriesInUse) free(cx->stdidx[j].aIndex);
 577         free(cx->stdidx);
 578
 579     } while (cx++ != &priv->suidx[priv->suidx_size-1]);
 580     free(priv->suidx);
 581
 582 }
 583
 584 /* Read a saved index file */
 585 if (index_file_load) {
 586   FILE *fp;
 587   char magic[7];
 588   unsigned int i;
 589
 590   if ((fp = fopen(index_file_load, "r")) == NULL) {
 591     mp_tmsg(MSGT_HEADER,MSGL_ERR, "Can't read index file %s: %s\n", index_file_load, strerror(errno));
 592     goto gen_index;
 593   }
 594   fread(&magic, 6, 1, fp);
 595   if (strncmp(magic, "MPIDX1", 6)) {
 596     mp_tmsg(MSGT_HEADER,MSGL_ERR, "%s is not a valid MPlayer index file.\n", index_file_load);
 597     goto gen_index;
 598   }
 599   fread(&priv->idx_size, sizeof(priv->idx_size), 1, fp);
 600   priv->idx=malloc(priv->idx_size*sizeof(AVIINDEXENTRY));
 601   if (!priv->idx) {
 602     mp_tmsg(MSGT_HEADER,MSGL_ERR, "Could not allocate memory for index data from %s.\n", index_file_load);
 603     priv->idx_size = 0;
 604     goto gen_index;
 605   }
 606
 607   for (i=0; i<priv->idx_size;i++) {
 608     AVIINDEXENTRY *idx;
 609     idx=&((AVIINDEXENTRY *)priv->idx)[i];
 610     fread(idx, sizeof(AVIINDEXENTRY), 1, fp);
 611     if (feof(fp)) {
 612       mp_tmsg(MSGT_HEADER,MSGL_ERR, "premature end of index file %s\n", index_file_load);
 613       free(priv->idx);
 614       priv->idx_size = 0;
 615       goto gen_index;
 616     }
 617   }
 618   fclose(fp);
 619   mp_tmsg(MSGT_HEADER,MSGL_INFO, "Loaded index file: %s\n", index_file_load);
 620 }
 621 gen_index:
 622 if(index_mode>=2 || (priv->idx_size==0 && index_mode==1)){
 623   int idx_pos = 0;
 624   // build index for file:
 625   stream_reset(demuxer->stream);
 626   stream_seek(demuxer->stream,demuxer->movi_start);
 627
 628   priv->idx_size=0;
 629   priv->idx=NULL;
 630
 631   while(1){
 632     int id;
 633     unsigned len;
 634     off_t skip;
 635     AVIINDEXENTRY* idx;
 636     unsigned int c;
 637     demuxer->filepos=stream_tell(demuxer->stream);
 638     if(demuxer->filepos>=demuxer->movi_end && demuxer->movi_start<demuxer->movi_end) break;
 639     id=stream_read_dword_le(demuxer->stream);
 640     len=stream_read_dword_le(demuxer->stream);
 641     if(id==mmioFOURCC('L','I','S','T') || id==mmioFOURCC('R', 'I', 'F', 'F')){
 642       id=stream_read_dword_le(demuxer->stream); // list or RIFF type
 643       continue;
 644     }
 645     if(stream_eof(demuxer->stream)) break;
 646     if(!id || avi_stream_id(id)==100) goto skip_chunk; // bad ID (or padding?)
 647
 648     if(idx_pos>=priv->idx_size){
 649 //      priv->idx_size+=32;
 650       priv->idx_size+=1024; // +16kB
 651       priv->idx=realloc(priv->idx,priv->idx_size*sizeof(AVIINDEXENTRY));
 652       if(!priv->idx){idx_pos=0; break;} // error!
 653     }
 654     idx=&((AVIINDEXENTRY *)priv->idx)[idx_pos++];
 655     idx->ckid=id;
 656     idx->dwFlags=AVIIF_KEYFRAME; // FIXME
 657     idx->dwFlags|=(demuxer->filepos>>16)&0xffff0000U;
 658     idx->dwChunkOffset=(unsigned long)demuxer->filepos;
 659     idx->dwChunkLength=len;
 660
 661     c=stream_read_dword(demuxer->stream);
 662
 663     if(!len) idx->dwFlags&=~AVIIF_KEYFRAME;
 664
 665     // Fix keyframes for DivX files:
 666     if(idxfix_divx)
 667       if(avi_stream_id(id)==idxfix_videostream){
 668         switch(idxfix_divx){
 669             case 3: c=stream_read_dword(demuxer->stream)<<5; //skip 32+5 bits for m$mpeg4v1
 670             case 1: if(c&0x40000000) idx->dwFlags&=~AVIIF_KEYFRAME;break; // divx 3
 671             case 2: if(c==0x1B6) idx->dwFlags&=~AVIIF_KEYFRAME;break; // divx 4
 672         }
 673       }
 674
 675     // update status line:
 676     { static off_t lastpos;
 677       off_t pos;
 678       off_t len=demuxer->movi_end-demuxer->movi_start;
 679       if(len){
 680           pos=100*(demuxer->filepos-demuxer->movi_start)/len; // %
 681       } else {
 682           pos=(demuxer->filepos-demuxer->movi_start)>>20; // MB
 683       }
 684       if(pos!=lastpos){
 685           lastpos=pos;
 686           mp_tmsg(MSGT_HEADER,MSGL_STATUS, "Generating Index: %3lu %s     \r",
 687                  (unsigned long)pos, len?"%":"MB");
 688       }
 689     }
 690     mp_dbg(MSGT_HEADER,MSGL_DBG2,"%08X %08X %.4s %08X %X\n",(unsigned int)demuxer->filepos,id,(char *) &id,(int)c,(unsigned int) idx->dwFlags);
 691 #if 0
 692     { unsigned char tmp[64];
 693       int i;
 694       stream_read(demuxer->stream,tmp,64);
 695       printf("%.4s",&id);
 696       for(i=0;i<64;i++) printf(" %02X",tmp[i]);
 697       printf("\n");
 698     }
 699 #endif
 700 skip_chunk:
 701     skip=(len+1)&(~1UL); // total bytes in this chunk
 702     stream_seek(demuxer->stream,8+demuxer->filepos+skip);
 703   }
 704   priv->idx_size=idx_pos;
 705   mp_tmsg(MSGT_HEADER,MSGL_INFO,"AVI: Generated index table for %d chunks!\n",priv->idx_size);
 706   if( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx,priv->idx_size,MSGL_DBG2);
 707
 708   /* Write generated index to a file */
 709   if (index_file_save) {
 710     FILE *fp;
 711     unsigned int i;
 712
 713     if ((fp=fopen(index_file_save, "w")) == NULL) {
 714       mp_tmsg(MSGT_HEADER,MSGL_ERR, "Couldn't write index file %s: %s\n", index_file_save, strerror(errno));
 715       return;
 716     }
 717     fwrite("MPIDX1", 6, 1, fp);
 718     fwrite(&priv->idx_size, sizeof(priv->idx_size), 1, fp);
 719     for (i=0; i<priv->idx_size; i++) {
 720       AVIINDEXENTRY *idx = &((AVIINDEXENTRY *)priv->idx)[i];
 721       fwrite(idx, sizeof(AVIINDEXENTRY), 1, fp);
 722     }
 723     fclose(fp);
 724     mp_tmsg(MSGT_HEADER,MSGL_INFO, "Saved index file: %s\n", index_file_save);
 725   }
 726 }
 727 }