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     unsigned char *p = (unsigned char *)&id;
  39     id = le2me_32(id);
  40
  41     if (p[2] == 'd') {
  42         if (res) {
  43             res[0] = p[0];
  44             res[1] = p[1];
  45         }
  46         return 1;
  47     }
  48     return 0;
  49 }
  50
  51 static int avi_idx_cmp(const void *elem1, const void *elem2)
  52 {
  53   register off_t a = AVI_IDX_OFFSET((AVIINDEXENTRY *)elem1);
  54   register off_t b = AVI_IDX_OFFSET((AVIINDEXENTRY *)elem2);
  55   return (a > b) - (b > a);
  56 }
  57
  58 void read_avi_header(demuxer_t *demuxer,int index_mode){
  59 sh_audio_t *sh_audio=NULL;
  60 sh_video_t *sh_video=NULL;
  61 int stream_id=-1;
  62 int idxfix_videostream=0;
  63 int idxfix_divx=0;
  64 avi_priv_t* priv=demuxer->priv;
  65 off_t list_end=0;
  66
  67 //---- AVI header:
  68 priv->idx_size=0;
  69 priv->audio_streams=0;
  70 while(1){
  71   int id=stream_read_dword_le(demuxer->stream);
  72   unsigned chunksize,size2;
  73   static int last_fccType=0;
  74   static int last_fccHandler=0;
  75   char* hdr=NULL;
  76   //
  77   if(stream_eof(demuxer->stream)) break;
  78   // Imply -forceidx if -saveidx is specified
  79   if (index_file_save)
  80     index_mode = 2;
  81   //
  82   if(id==mmioFOURCC('L','I','S','T')){
  83     unsigned len=stream_read_dword_le(demuxer->stream);   // list size
  84     id=stream_read_dword_le(demuxer->stream);             // list type
  85     mp_msg(MSGT_HEADER,MSGL_DBG2,"LIST %.4s  len=%u\n",(char *) &id,len);
  86     if(len >= 4) {
  87         len -= 4;
  88         list_end=stream_tell(demuxer->stream)+((len+1)&(~1));
  89     } else {
  90         mp_tmsg(MSGT_HEADER,MSGL_WARN,"** empty list?!\n");
  91         list_end = 0;
  92     }
  93     mp_msg(MSGT_HEADER,MSGL_V,"list_end=0x%X\n",(int)list_end);
  94     if(id==listtypeAVIMOVIE){
  95       // found MOVI header
  96       if(!demuxer->movi_start) demuxer->movi_start=stream_tell(demuxer->stream);
  97       demuxer->movi_end=stream_tell(demuxer->stream)+len;
  98       mp_tmsg(MSGT_HEADER,MSGL_V,"Found movie at 0x%X - 0x%X\n",(int)demuxer->movi_start,(int)demuxer->movi_end);
  99       if(demuxer->stream->end_pos>demuxer->movi_end) demuxer->movi_end=demuxer->stream->end_pos;
 100       if(index_mode==-2 || index_mode==2 || index_mode==0)
 101         break; // reading from non-seekable source (stdin) or forced index or no index forced
 102       if(list_end>0) stream_seek(demuxer->stream,list_end); // skip movi
 103       list_end=0;
 104     }
 105     continue;
 106   }
 107   size2=stream_read_dword_le(demuxer->stream);
 108   mp_msg(MSGT_HEADER,MSGL_DBG2,"CHUNK %.4s  len=%u\n",(char *) &id,size2);
 109   chunksize=(size2+1)&(~1);
 110   switch(id){
 111
 112     // Indicates where the subject of the file is archived
 113     case mmioFOURCC('I','A','R','L'): hdr="Archival Location";break;
 114     // Lists the artist of the original subject of the file;
 115     // for example, "Michaelangelo."
 116     case mmioFOURCC('I','A','R','T'): hdr="Artist";break;
 117     // Lists the name of the person or organization that commissioned
 118     // the subject of the file; for example "Pope Julian II."
 119     case mmioFOURCC('I','C','M','S'): hdr="Commissioned";break;
 120     // Provides general comments about the file or the subject
 121     // of the file. If the comment is several sentences long, end each
 122     // sentence with a period. Do not include new-line characters.
 123     case mmioFOURCC('I','C','M','T'): hdr="Comments";break;
 124     // Records the copyright information for the file; for example,
 125     // "Copyright Encyclopedia International 1991." If there are multiple
 126     // copyrights, separate them by semicolon followed by a space.
 127     case mmioFOURCC('I','C','O','P'): hdr="Copyright";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','D'): hdr="Creation Date";break;
 131     // Describes whether an image has been cropped and, if so, how it
 132     // was cropped; for example, "lower-right corner."
 133     case mmioFOURCC('I','C','R','P'): hdr="Cropped";break;
 134     // Specifies the size of the original subject of the file; for
 135     // example, "8.5 in h, 11 in w."
 136     case mmioFOURCC('I','D','I','M'): hdr="Dimensions";break;
 137     // Stores dots per inch setting of the digitizer used to
 138     // produce the file, such as "300."
 139     case mmioFOURCC('I','D','P','I'): hdr="Dots Per Inch";break;
 140     // Stores the of the engineer who worked on the file. If there are
 141     // multiple engineers, separate the names by a semicolon and a blank;
 142     // for example, "Smith, John; Adams, Joe."
 143     case mmioFOURCC('I','E','N','G'): hdr="Engineer";break;
 144     // Describes the original work, such as "landscape,", "portrait,"
 145     // "still liefe," etc.
 146     case mmioFOURCC('I','G','N','R'): hdr="Genre";break;
 147     // Provides a list of keywords that refer to the file or subject of the
 148     // file. Separate multiple keywords with a semicolon and a blank;
 149     // for example, "Seattle, aerial view; scenery."
 150     case mmioFOURCC('I','K','E','Y'): hdr="Keywords";break;
 151     // ILGT - Describes the changes in the lightness settings on the digitizer
 152     // required to produce the file. Note that the format of this information
 153     // depends on the hardware used.
 154     case mmioFOURCC('I','L','G','T'): hdr="Lightness";break;
 155     // IMED - Decribes the original subject of the file, such as
 156     // "computer image," "drawing," "lithograph," and so on.
 157     case mmioFOURCC('I','M','E','D'): hdr="Medium";break;
 158     // INAM - Stores the title of the subject of the file, such as
 159     // "Seattle from Above."
 160     case mmioFOURCC('I','N','A','M'): hdr="Title";break;
 161     // IPLT - Specifies the number of colors requested when digitizing
 162     // an image, such as "256."
 163     case mmioFOURCC('I','P','L','T'): hdr="Palette Setting";break;
 164     // IPRD - Specifies the name of title the file was originally intended
 165     // for, such as "Encyclopedia of Pacific Northwest Geography."
 166     case mmioFOURCC('I','P','R','D'): hdr="Product";break;
 167     // ISBJ - Decsribes the contents of the file, such as
 168     // "Aerial view of Seattle."
 169     case mmioFOURCC('I','S','B','J'): hdr="Subject";break;
 170     // ISFT - Identifies the name of the software packages used to create the
 171     // file, such as "Microsoft WaveEdit"
 172     case mmioFOURCC('I','S','F','T'): hdr="Software";break;
 173     // ISHP - Identifies the change in sharpness for the digitizer
 174     // required to produce the file (the format depends on the hardware used).
 175     case mmioFOURCC('I','S','H','P'): hdr="Sharpness";break;
 176     // ISRC - Identifies the name of the person or organization who
 177     // suplied the original subject of the file; for example, "Try Research."
 178     case mmioFOURCC('I','S','R','C'): hdr="Source";break;
 179     // ISRF - Identifies the original form of the material that was digitized,
 180     // such as "slide," "paper," "map," and so on. This is not necessarily
 181     // the same as IMED
 182     case mmioFOURCC('I','S','R','F'): hdr="Source Form";break;
 183     // ITCH - Identifies the technician who digitized the subject file;
 184     // for example, "Smith, John."
 185     case mmioFOURCC('I','T','C','H'): hdr="Technician";break;
 186     case mmioFOURCC('I','S','M','P'): hdr="Time Code";break;
 187     case mmioFOURCC('I','D','I','T'): hdr="Digitization Time";break;
 188
 189     case ckidAVIMAINHDR:          // read 'avih'
 190       stream_read(demuxer->stream,(char*) &avih,FFMIN(size2,sizeof(avih)));
 191       le2me_MainAVIHeader(&avih); // swap to machine endian
 192       chunksize-=FFMIN(size2,sizeof(avih));
 193       if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_avih(&avih,MSGL_V); // else print_avih_flags(&avih,MSGL_V);
 194       break;
 195     case ckidSTREAMHEADER: {      // read 'strh'
 196       AVIStreamHeader h;
 197       stream_read(demuxer->stream,(char*) &h,FFMIN(size2,sizeof(h)));
 198       le2me_AVIStreamHeader(&h);  // swap to machine endian
 199       chunksize-=FFMIN(size2,sizeof(h));
 200       ++stream_id;
 201       if(h.fccType==streamtypeVIDEO){
 202         sh_video=new_sh_video(demuxer,stream_id);
 203         mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Video stream found, -vid %d\n", "aviheader", stream_id);
 204         memcpy(&sh_video->video,&h,sizeof(h));
 205         sh_video->stream_delay = (float)sh_video->video.dwStart * sh_video->video.dwScale/sh_video->video.dwRate;
 206       } else
 207       if(h.fccType==streamtypeAUDIO){
 208         sh_audio=new_sh_audio(demuxer,stream_id);
 209         mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Audio stream found, -aid %d\n", "aviheader", stream_id);
 210         memcpy(&sh_audio->audio,&h,sizeof(h));
 211         sh_audio->stream_delay = (float)sh_audio->audio.dwStart * sh_audio->audio.dwScale/sh_audio->audio.dwRate;
 212         sh_audio->needs_parsing = 1;
 213       }
 214       last_fccType=h.fccType;
 215       last_fccHandler=h.fccHandler;
 216       if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_strh(&h,MSGL_V);
 217       break; }
 218     case mmioFOURCC('i', 'n', 'd', 'x'): {
 219       uint32_t i;
 220       avisuperindex_chunk *s;
 221
 222       if(!index_mode) break;
 223
 224       if(chunksize<=24){
 225         break;
 226       }
 227       priv->suidx_size++;
 228       priv->suidx = realloc_struct(priv->suidx, priv->suidx_size, sizeof (avisuperindex_chunk));
 229       s = &priv->suidx[priv->suidx_size-1];
 230
 231       chunksize-=24;
 232       memcpy(s->fcc, "indx", 4);
 233       s->dwSize = size2;
 234       s->wLongsPerEntry = stream_read_word_le(demuxer->stream);
 235       s->bIndexSubType = stream_read_char(demuxer->stream);
 236       s->bIndexType = stream_read_char(demuxer->stream);
 237       s->nEntriesInUse = stream_read_dword_le(demuxer->stream);
 238       *(uint32_t *)s->dwChunkId = stream_read_dword_le(demuxer->stream);
 239       stream_read(demuxer->stream, (char *)s->dwReserved, 3*4);
 240       memset(s->dwReserved, 0, 3*4);
 241
 242       print_avisuperindex_chunk(s,MSGL_V);
 243
 244       // Check and fix this useless crap
 245       if(s->wLongsPerEntry != sizeof (avisuperindex_entry)/4) {
 246           mp_msg (MSGT_HEADER, MSGL_WARN, "Broken super index chunk size: %u\n",s->wLongsPerEntry);
 247           s->wLongsPerEntry = sizeof(avisuperindex_entry)/4;
 248       }
 249       if( ((chunksize/4)/s->wLongsPerEntry) < s->nEntriesInUse){
 250         mp_msg (MSGT_HEADER, MSGL_WARN, "Broken super index chunk\n");
 251         s->nEntriesInUse = (chunksize/4)/s->wLongsPerEntry;
 252       }
 253
 254       s->aIndex = calloc(s->nEntriesInUse, sizeof (avisuperindex_entry));
 255       s->stdidx = calloc(s->nEntriesInUse, sizeof (avistdindex_chunk));
 256
 257       // now the real index of indices
 258       for (i=0; i<s->nEntriesInUse; i++) {
 259           chunksize-=16;
 260           s->aIndex[i].qwOffset = stream_read_qword_le(demuxer->stream);
 261           s->aIndex[i].dwSize = stream_read_dword_le(demuxer->stream);
 262           s->aIndex[i].dwDuration = stream_read_dword_le(demuxer->stream);
 263           mp_msg (MSGT_HEADER, MSGL_V, "ODML (%.4s): [%d] 0x%016"PRIx64" 0x%04x %u\n",
 264                   (s->dwChunkId), i,
 265                   (uint64_t)s->aIndex[i].qwOffset, s->aIndex[i].dwSize, s->aIndex[i].dwDuration);
 266       }
 267
 268       break; }
 269     case ckidSTREAMFORMAT: {      // read 'strf'
 270       if(last_fccType==streamtypeVIDEO){
 271         sh_video->bih=calloc(FFMAX(chunksize, sizeof(BITMAPINFOHEADER)), 1);
 272 //        sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize);
 273         mp_tmsg(MSGT_HEADER,MSGL_V,"Found 'bih', %u bytes of %d\n",chunksize,sizeof(BITMAPINFOHEADER));
 274         stream_read(demuxer->stream,(char*) sh_video->bih,chunksize);
 275         le2me_BITMAPINFOHEADER(sh_video->bih);  // swap to machine endian
 276         if (sh_video->bih->biSize > chunksize && sh_video->bih->biSize > sizeof(BITMAPINFOHEADER))
 277                 sh_video->bih->biSize = chunksize;
 278         // fixup MS-RLE header (seems to be broken for <256 color files)
 279         if(sh_video->bih->biCompression<=1 && sh_video->bih->biSize==40)
 280             sh_video->bih->biSize=chunksize;
 281         if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_video_header(sh_video->bih,MSGL_V);
 282         chunksize=0;
 283         sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale;
 284         sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate;
 285         sh_video->format = sh_video->bih->biCompression;
 286 //        if(demuxer->video->id==-1) demuxer->video->id=stream_id;
 287         // IdxFix:
 288         idxfix_videostream=stream_id;
 289         switch(sh_video->bih->biCompression){
 290         case mmioFOURCC('M', 'P', 'G', '4'):
 291         case mmioFOURCC('m', 'p', 'g', '4'):
 292         case mmioFOURCC('D', 'I', 'V', '1'):
 293           idxfix_divx=3; // set index recovery mpeg4 flavour: msmpeg4v1
 294           mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for M$ mpg4v1 video.\n");
 295           break;
 296         case mmioFOURCC('D', 'I', 'V', '3'):
 297         case mmioFOURCC('d', 'i', 'v', '3'):
 298         case mmioFOURCC('D', 'I', 'V', '4'):
 299         case mmioFOURCC('d', 'i', 'v', '4'):
 300         case mmioFOURCC('D', 'I', 'V', '5'):
 301         case mmioFOURCC('d', 'i', 'v', '5'):
 302         case mmioFOURCC('D', 'I', 'V', '6'):
 303         case mmioFOURCC('d', 'i', 'v', '6'):
 304         case mmioFOURCC('M', 'P', '4', '3'):
 305         case mmioFOURCC('m', 'p', '4', '3'):
 306         case mmioFOURCC('M', 'P', '4', '2'):
 307         case mmioFOURCC('m', 'p', '4', '2'):
 308         case mmioFOURCC('D', 'I', 'V', '2'):
 309         case mmioFOURCC('A', 'P', '4', '1'):
 310           idxfix_divx=1; // set index recovery mpeg4 flavour: msmpeg4v3
 311           mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for DIVX3 video.\n");
 312           break;
 313         case mmioFOURCC('D', 'I', 'V', 'X'):
 314         case mmioFOURCC('d', 'i', 'v', 'x'):
 315         case mmioFOURCC('D', 'X', '5', '0'):
 316         case mmioFOURCC('X', 'V', 'I', 'D'):
 317         case mmioFOURCC('x', 'v', 'i', 'd'):
 318         case mmioFOURCC('F', 'M', 'P', '4'):
 319         case mmioFOURCC('f', 'm', 'p', '4'):
 320           idxfix_divx=2; // set index recovery mpeg4 flavour: generic mpeg4
 321           mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for MPEG-4 video.\n");
 322           break;
 323         }
 324       } else
 325       if(last_fccType==streamtypeAUDIO){
 326         unsigned wf_size = chunksize<sizeof(WAVEFORMATEX)?sizeof(WAVEFORMATEX):chunksize;
 327         sh_audio->wf=calloc(wf_size,1);
 328 //        sh_audio->wf=malloc(chunksize); memset(sh_audio->wf,0,chunksize);
 329         mp_tmsg(MSGT_HEADER,MSGL_V,"Found 'wf', %d bytes of %d\n",chunksize,sizeof(WAVEFORMATEX));
 330         stream_read(demuxer->stream,(char*) sh_audio->wf,chunksize);
 331         le2me_WAVEFORMATEX(sh_audio->wf);
 332         if (sh_audio->wf->cbSize != 0 &&
 333             wf_size < sizeof(WAVEFORMATEX)+sh_audio->wf->cbSize) {
 334             sh_audio->wf=realloc(sh_audio->wf, sizeof(WAVEFORMATEX)+sh_audio->wf->cbSize);
 335         }
 336         sh_audio->format=sh_audio->wf->wFormatTag;
 337         if (sh_audio->format == 1 &&
 338             last_fccHandler == mmioFOURCC('A', 'x', 'a', 'n'))
 339             sh_audio->format = last_fccHandler;
 340         sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
 341         chunksize=0;
 342         if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_wave_header(sh_audio->wf,MSGL_V);
 343         ++priv->audio_streams;
 344 //        if(demuxer->audio->id==-1) demuxer->audio->id=stream_id;
 345       }
 346       break;
 347     }
 348     case mmioFOURCC('v', 'p', 'r', 'p'): {
 349         VideoPropHeader *vprp = malloc(chunksize);
 350         unsigned int i;
 351         stream_read(demuxer->stream, (void*)vprp, chunksize);
 352         le2me_VideoPropHeader(vprp);
 353         chunksize -= sizeof(*vprp)-sizeof(vprp->FieldInfo);
 354         chunksize /= sizeof(VIDEO_FIELD_DESC);
 355         if (vprp->nbFieldPerFrame > chunksize) {
 356             vprp->nbFieldPerFrame = chunksize;
 357         }
 358         chunksize = 0;
 359         for (i=0; i<vprp->nbFieldPerFrame; i++) {
 360                 le2me_VIDEO_FIELD_DESC(&vprp->FieldInfo[i]);
 361         }
 362         if (sh_video) {
 363                 sh_video->aspect = GET_AVI_ASPECT(vprp->dwFrameAspectRatio);
 364         }
 365         if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_vprp(vprp,MSGL_V);
 366         free(vprp);
 367         break;
 368     }
 369     case mmioFOURCC('d', 'm', 'l', 'h'): {
 370         // dmlh 00 00 00 04 frms
 371         unsigned int total_frames = stream_read_dword_le(demuxer->stream);
 372         mp_tmsg(MSGT_HEADER,MSGL_V,"AVI: dmlh found (size=%d) (total_frames=%d)\n", chunksize, total_frames);
 373         stream_skip(demuxer->stream, chunksize-4);
 374         chunksize = 0;
 375     }
 376     break;
 377     case ckidAVINEWINDEX:
 378     if(demuxer->movi_end>stream_tell(demuxer->stream))
 379         demuxer->movi_end=stream_tell(demuxer->stream); // fixup movi-end
 380     if(index_mode && !priv->isodml){
 381       int i;
 382       priv->idx_size=size2>>4;
 383       mp_tmsg(MSGT_HEADER,MSGL_V,"Reading INDEX block, %d chunks for %d frames (fpos=%"PRId64").\n",
 384         priv->idx_size,avih.dwTotalFrames, (int64_t)stream_tell(demuxer->stream));
 385       priv->idx=malloc(priv->idx_size<<4);
 386 //      printf("\nindex to %p !!!!! (priv=%p)\n",priv->idx,priv);
 387       stream_read(demuxer->stream,(char*)priv->idx,priv->idx_size<<4);
 388       for (i = 0; i < priv->idx_size; i++) {    // swap index to machine endian
 389         AVIINDEXENTRY *entry=(AVIINDEXENTRY*)priv->idx + i;
 390         le2me_AVIINDEXENTRY(entry);
 391         /*
 392          * We (ab)use the upper word for bits 32-47 of the offset, so
 393          * we'll clear them here.
 394          * FIXME: AFAIK no codec uses them, but if one does it will break
 395          */
 396         entry->dwFlags&=0xffff;
 397       }
 398       chunksize-=priv->idx_size<<4;
 399       if( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx,priv->idx_size,MSGL_DBG2);
 400     }
 401     break;
 402     /* added May 2002 */
 403     case mmioFOURCC('R','I','F','F'): {
 404         char riff_type[4];
 405
 406         mp_tmsg(MSGT_HEADER, MSGL_V, "Additional RIFF header...\n");
 407         stream_read(demuxer->stream, riff_type, sizeof riff_type);
 408         if (strncmp(riff_type, "AVIX", sizeof riff_type))
 409             mp_tmsg(MSGT_HEADER, MSGL_WARN, "** Warning: this is no extended AVI header..\n");
 410         else {
 411                 /*
 412                  * We got an extended AVI header, so we need to switch to
 413                  * ODML to get seeking to work, provided we got indx chunks
 414                  * in the header (suidx_size > 0).
 415                  */
 416                 if (priv->suidx_size > 0)
 417                         priv->isodml = 1;
 418         }
 419         chunksize = 0;
 420         list_end = 0; /* a new list will follow */
 421         break; }
 422     case ckidAVIPADDING:
 423         stream_skip(demuxer->stream, chunksize);
 424         chunksize = 0;
 425         break;
 426   }
 427   if(hdr){
 428     mp_msg(MSGT_HEADER,MSGL_V,"hdr=%s  size=%u\n",hdr,size2);
 429     if(size2==3)
 430       chunksize=1; // empty
 431     else {
 432       char buf[256];
 433       int len=(size2<250)?size2:250;
 434       stream_read(demuxer->stream,buf,len);
 435       chunksize-=len;
 436       buf[len]=0;
 437       mp_msg(MSGT_HEADER,MSGL_V,"%-10s: %s\n",hdr,buf);
 438       demux_info_add(demuxer, hdr, buf);
 439     }
 440   }
 441   mp_msg(MSGT_HEADER,MSGL_DBG2,"list_end=0x%"PRIX64"  pos=0x%"PRIX64"  chunksize=0x%"PRIX64"  next=0x%"PRIX64"\n",
 442       (int64_t)list_end, (int64_t)stream_tell(demuxer->stream),
 443       (int64_t)chunksize, (int64_t)chunksize+(int64_t)stream_tell(demuxer->stream));
 444   if(list_end>0 &&
 445      chunksize+stream_tell(demuxer->stream) == list_end) list_end=0;
 446   if(list_end>0 && chunksize+stream_tell(demuxer->stream)>list_end){
 447       mp_tmsg(MSGT_HEADER,MSGL_V,"Broken chunk?  chunksize=%d  (id=%.4s)\n",chunksize,(char *) &id);
 448       stream_seek(demuxer->stream,list_end);
 449       list_end=0;
 450   } else
 451   if(chunksize>0) stream_skip(demuxer->stream,chunksize); else
 452   if((int)chunksize<0) mp_msg(MSGT_HEADER,MSGL_WARN,"chunksize=%u  (id=%.4s)\n",chunksize,(char *) &id);
 453
 454 }
 455
 456 if (priv->suidx_size > 0 && priv->idx_size == 0) {
 457     /*
 458      * No NEWAVIINDEX, but we got an OpenDML index.
 459      */
 460     priv->isodml = 1;
 461 }
 462
 463 if (priv->isodml && (index_mode==-1 || index_mode==0 || index_mode==1)) {
 464     int i, j, k;
 465
 466     avisuperindex_chunk *cx;
 467     AVIINDEXENTRY *idx;
 468
 469
 470     if (priv->idx_size) free(priv->idx);
 471     priv->idx_size = 0;
 472     priv->idx_offset = 0;
 473     priv->idx = NULL;
 474
 475     mp_tmsg(MSGT_HEADER, MSGL_INFO, "AVI: ODML: Building ODML index (%d superindexchunks).\n", priv->suidx_size);
 476
 477     // read the standard indices
 478     for (cx = &priv->suidx[0], i=0; i<priv->suidx_size; cx++, i++) {
 479         stream_reset(demuxer->stream);
 480         for (j=0; j<cx->nEntriesInUse; j++) {
 481             int ret1, ret2;
 482             memset(&cx->stdidx[j], 0, 32);
 483             ret1 = stream_seek(demuxer->stream, (off_t)cx->aIndex[j].qwOffset);
 484             ret2 = stream_read(demuxer->stream, (char *)&cx->stdidx[j], 32);
 485             if (ret1 != 1 || ret2 != 32 || cx->stdidx[j].nEntriesInUse==0) {
 486                 // this is a broken file (probably incomplete) let the standard
 487                 // gen_index routine handle this
 488                 priv->isodml = 0;
 489                 priv->idx_size = 0;
 490                 mp_tmsg(MSGT_HEADER, MSGL_WARN, "AVI: ODML: Broken (incomplete?) file detected. Will use traditional index.\n");
 491                 goto freeout;
 492             }
 493
 494             le2me_AVISTDIDXCHUNK(&cx->stdidx[j]);
 495             print_avistdindex_chunk(&cx->stdidx[j],MSGL_V);
 496             priv->idx_size += cx->stdidx[j].nEntriesInUse;
 497             cx->stdidx[j].aIndex = malloc(cx->stdidx[j].nEntriesInUse*sizeof(avistdindex_entry));
 498             stream_read(demuxer->stream, (char *)cx->stdidx[j].aIndex,
 499                     cx->stdidx[j].nEntriesInUse*sizeof(avistdindex_entry));
 500             for (k=0;k<cx->stdidx[j].nEntriesInUse; k++)
 501                 le2me_AVISTDIDXENTRY(&cx->stdidx[j].aIndex[k]);
 502
 503             cx->stdidx[j].dwReserved3 = 0;
 504
 505         }
 506     }
 507
 508     /*
 509      * We convert the index by translating all entries into AVIINDEXENTRYs
 510      * and sorting them by offset.  The result should be the same index
 511      * we would get with -forceidx.
 512      */
 513
 514     idx = priv->idx = malloc(priv->idx_size * sizeof (AVIINDEXENTRY));
 515
 516     for (cx = priv->suidx; cx != &priv->suidx[priv->suidx_size]; cx++) {
 517         avistdindex_chunk *sic;
 518         for (sic = cx->stdidx; sic != &cx->stdidx[cx->nEntriesInUse]; sic++) {
 519             avistdindex_entry *sie;
 520             for (sie = sic->aIndex; sie != &sic->aIndex[sic->nEntriesInUse]; sie++) {
 521                 uint64_t off = sic->qwBaseOffset + sie->dwOffset - 8;
 522                 memcpy(&idx->ckid, sic->dwChunkId, 4);
 523                 idx->dwChunkOffset = off;
 524                 idx->dwFlags = (off >> 32) << 16;
 525                 idx->dwChunkLength = sie->dwSize & 0x7fffffff;
 526                 idx->dwFlags |= (sie->dwSize&0x80000000)?0x0:AVIIF_KEYFRAME; // bit 31 denotes !keyframe
 527                 idx++;
 528             }
 529         }
 530     }
 531     qsort(priv->idx, priv->idx_size, sizeof(AVIINDEXENTRY), avi_idx_cmp);
 532
 533     /*
 534        Hack to work around a "wrong" index in some divx odml files
 535        (processor_burning.avi as an example)
 536        They have ##dc on non keyframes but the ix00 tells us they are ##db.
 537        Read the fcc of a non-keyframe vid frame and check it.
 538      */
 539
 540     {
 541         uint32_t id;
 542         uint32_t db = 0;
 543         stream_reset (demuxer->stream);
 544
 545         // find out the video stream id. I have seen files with 01db.
 546         for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){
 547             unsigned char res[2];
 548             if (odml_get_vstream_id(idx->ckid, res)) {
 549                 db = mmioFOURCC(res[0], res[1], 'd', 'b');
 550                 break;
 551             }
 552         }
 553
 554         // find first non keyframe
 555         for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){
 556             if (!(idx->dwFlags & AVIIF_KEYFRAME) && idx->ckid == db) break;
 557         }
 558         if (i<priv->idx_size && db) {
 559             stream_seek(demuxer->stream, AVI_IDX_OFFSET(idx));
 560             id = stream_read_dword_le(demuxer->stream);
 561             if (id && id != db) // index fcc and real fcc differ? fix it.
 562                 for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){
 563                     if (!(idx->dwFlags & AVIIF_KEYFRAME) && idx->ckid == db)
 564                         idx->ckid = id;
 565             }
 566         }
 567     }
 568
 569     if ( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx, priv->idx_size,MSGL_DBG2);
 570
 571     demuxer->movi_end=demuxer->stream->end_pos;
 572
 573 freeout:
 574
 575     // free unneeded stuff
 576     cx = &priv->suidx[0];
 577     do {
 578         for (j=0;j<cx->nEntriesInUse;j++)
 579             if (cx->stdidx[j].nEntriesInUse) free(cx->stdidx[j].aIndex);
 580         free(cx->stdidx);
 581
 582     } while (cx++ != &priv->suidx[priv->suidx_size-1]);
 583     free(priv->suidx);
 584
 585 }
 586
 587 /* Read a saved index file */
 588 if (index_file_load) {
 589   FILE *fp;
 590   char magic[7];
 591   unsigned int i;
 592
 593   if ((fp = fopen(index_file_load, "r")) == NULL) {
 594     mp_tmsg(MSGT_HEADER,MSGL_ERR, "Can't read index file %s: %s\n", index_file_load, strerror(errno));
 595     goto gen_index;
 596   }
 597   fread(&magic, 6, 1, fp);
 598   if (strncmp(magic, "MPIDX1", 6)) {
 599     mp_tmsg(MSGT_HEADER,MSGL_ERR, "%s is not a valid MPlayer index file.\n", index_file_load);
 600     goto gen_index;
 601   }
 602   fread(&priv->idx_size, sizeof(priv->idx_size), 1, fp);
 603   priv->idx=malloc(priv->idx_size*sizeof(AVIINDEXENTRY));
 604   if (!priv->idx) {
 605     mp_tmsg(MSGT_HEADER,MSGL_ERR, "Could not allocate memory for index data from %s.\n", index_file_load);
 606     priv->idx_size = 0;
 607     goto gen_index;
 608   }
 609
 610   for (i=0; i<priv->idx_size;i++) {
 611     AVIINDEXENTRY *idx;
 612     idx=&((AVIINDEXENTRY *)priv->idx)[i];
 613     fread(idx, sizeof(AVIINDEXENTRY), 1, fp);
 614     if (feof(fp)) {
 615       mp_tmsg(MSGT_HEADER,MSGL_ERR, "premature end of index file %s\n", index_file_load);
 616       free(priv->idx);
 617       priv->idx_size = 0;
 618       goto gen_index;
 619     }
 620   }
 621   fclose(fp);
 622   mp_tmsg(MSGT_HEADER,MSGL_INFO, "Loaded index file: %s\n", index_file_load);
 623 }
 624 gen_index:
 625 if(index_mode>=2 || (priv->idx_size==0 && index_mode==1)){
 626   int idx_pos = 0;
 627   // build index for file:
 628   stream_reset(demuxer->stream);
 629   stream_seek(demuxer->stream,demuxer->movi_start);
 630
 631   priv->idx_size=0;
 632   priv->idx=NULL;
 633
 634   while(1){
 635     int id;
 636     unsigned len;
 637     off_t skip;
 638     AVIINDEXENTRY* idx;
 639     unsigned int c;
 640     demuxer->filepos=stream_tell(demuxer->stream);
 641     if(demuxer->filepos>=demuxer->movi_end && demuxer->movi_start<demuxer->movi_end) break;
 642     id=stream_read_dword_le(demuxer->stream);
 643     len=stream_read_dword_le(demuxer->stream);
 644     if(id==mmioFOURCC('L','I','S','T') || id==mmioFOURCC('R', 'I', 'F', 'F')){
 645       id=stream_read_dword_le(demuxer->stream); // list or RIFF type
 646       continue;
 647     }
 648     if(stream_eof(demuxer->stream)) break;
 649     if(!id || avi_stream_id(id)==100) goto skip_chunk; // bad ID (or padding?)
 650
 651     if(idx_pos>=priv->idx_size){
 652 //      priv->idx_size+=32;
 653       priv->idx_size+=1024; // +16kB
 654       priv->idx=realloc(priv->idx,priv->idx_size*sizeof(AVIINDEXENTRY));
 655       if(!priv->idx){idx_pos=0; break;} // error!
 656     }
 657     idx=&((AVIINDEXENTRY *)priv->idx)[idx_pos++];
 658     idx->ckid=id;
 659     idx->dwFlags=AVIIF_KEYFRAME; // FIXME
 660     idx->dwFlags|=(demuxer->filepos>>16)&0xffff0000U;
 661     idx->dwChunkOffset=(unsigned long)demuxer->filepos;
 662     idx->dwChunkLength=len;
 663
 664     c=stream_read_dword(demuxer->stream);
 665
 666     if(!len) idx->dwFlags&=~AVIIF_KEYFRAME;
 667
 668     // Fix keyframes for DivX files:
 669     if(idxfix_divx)
 670       if(avi_stream_id(id)==idxfix_videostream){
 671         switch(idxfix_divx){
 672             case 3: c=stream_read_dword(demuxer->stream)<<5; //skip 32+5 bits for m$mpeg4v1
 673             case 1: if(c&0x40000000) idx->dwFlags&=~AVIIF_KEYFRAME;break; // divx 3
 674             case 2: if(c==0x1B6) idx->dwFlags&=~AVIIF_KEYFRAME;break; // divx 4
 675         }
 676       }
 677
 678     // update status line:
 679     { static off_t lastpos;
 680       off_t pos;
 681       off_t len=demuxer->movi_end-demuxer->movi_start;
 682       if(len){
 683           pos=100*(demuxer->filepos-demuxer->movi_start)/len; // %
 684       } else {
 685           pos=(demuxer->filepos-demuxer->movi_start)>>20; // MB
 686       }
 687       if(pos!=lastpos){
 688           lastpos=pos;
 689           mp_tmsg(MSGT_HEADER,MSGL_STATUS, "Generating Index: %3lu %s     \r",
 690                  (unsigned long)pos, len?"%":"MB");
 691       }
 692     }
 693     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);
 694 #if 0
 695     { unsigned char tmp[64];
 696       int i;
 697       stream_read(demuxer->stream,tmp,64);
 698       printf("%.4s",&id);
 699       for(i=0;i<64;i++) printf(" %02X",tmp[i]);
 700       printf("\n");
 701     }
 702 #endif
 703 skip_chunk:
 704     skip=(len+1)&(~1UL); // total bytes in this chunk
 705     stream_seek(demuxer->stream,8+demuxer->filepos+skip);
 706   }
 707   priv->idx_size=idx_pos;
 708   mp_tmsg(MSGT_HEADER,MSGL_INFO,"AVI: Generated index table for %d chunks!\n",priv->idx_size);
 709   if( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx,priv->idx_size,MSGL_DBG2);
 710
 711   /* Write generated index to a file */
 712   if (index_file_save) {
 713     FILE *fp;
 714     unsigned int i;
 715
 716     if ((fp=fopen(index_file_save, "w")) == NULL) {
 717       mp_tmsg(MSGT_HEADER,MSGL_ERR, "Couldn't write index file %s: %s\n", index_file_save, strerror(errno));
 718       return;
 719     }
 720     fwrite("MPIDX1", 6, 1, fp);
 721     fwrite(&priv->idx_size, sizeof(priv->idx_size), 1, fp);
 722     for (i=0; i<priv->idx_size; i++) {
 723       AVIINDEXENTRY *idx = &((AVIINDEXENTRY *)priv->idx)[i];
 724       fwrite(idx, sizeof(AVIINDEXENTRY), 1, fp);
 725     }
 726     fclose(fp);
 727     mp_tmsg(MSGT_HEADER,MSGL_INFO, "Saved index file: %s\n", index_file_save);
 728   }
 729 }
 730 }