libmpdemux/aviheader.c

   1
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <unistd.h>
   5 #include <errno.h>
   6
   7 #include "config.h"
   8 #include "mp_msg.h"
   9 #include "help_mp.h"
  10
  11 #include "stream/stream.h"
  12 #include "demuxer.h"
  13 #include "stheader.h"
  14
  15 #include "aviheader.h"
  16 #include "libavutil/common.h"
  17
  18 static MainAVIHeader avih;
  19
  20 void print_avih(MainAVIHeader *h, int verbose_level);
  21 void print_avih_flags(MainAVIHeader *h, int verbose_level);
  22 void print_strh(AVIStreamHeader *h, int verbose_level);
  23 void print_wave_header(WAVEFORMATEX *h, int verbose_level);
  24 void print_video_header(BITMAPINFOHEADER *h, int verbose_level);
  25 void print_index(AVIINDEXENTRY *idx,int idx_size, int verbose_level);
  26 void print_avistdindex_chunk(avistdindex_chunk *h, int verbose_level);
  27 void print_avisuperindex_chunk(avisuperindex_chunk *h, int verbose_level);
  28 void print_vprp(VideoPropHeader *vprp, int verbose_level);
  29
  30 static int odml_get_vstream_id(int id, unsigned char res[])
  31 {
  32     unsigned char *p = (unsigned char *)&id;
  33     id = le2me_32(id);
  34
  35     if (p[2] == 'd') {
  36         if (res) {
  37             res[0] = p[0];
  38             res[1] = p[1];
  39         }
  40         return 1;
  41     }
  42     return 0;
  43 }
  44
  45 static int avi_idx_cmp(const void *elem1,const void *elem2) {
  46   register off_t a = AVI_IDX_OFFSET((AVIINDEXENTRY *)elem1);
  47   register off_t b = AVI_IDX_OFFSET((AVIINDEXENTRY *)elem2);
  48   return (a > b) - (b > a);
  49 }
  50
  51 void read_avi_header(demuxer_t *demuxer,int index_mode){
  52 sh_audio_t *sh_audio=NULL;
  53 sh_video_t *sh_video=NULL;
  54 int stream_id=-1;
  55 int idxfix_videostream=0;
  56 int idxfix_divx=0;
  57 avi_priv_t* priv=demuxer->priv;
  58 off_t list_end=0;
  59
  60 //---- AVI header:
  61 priv->idx_size=0;
  62 priv->audio_streams=0;
  63 while(1){
  64   int id=stream_read_dword_le(demuxer->stream);
  65   unsigned chunksize,size2;
  66   static int last_fccType=0;
  67   static int last_fccHandler=0;
  68   char* hdr=NULL;
  69   //
  70   if(stream_eof(demuxer->stream)) break;
  71   // Imply -forceidx if -saveidx is specified
  72   if (index_file_save)
  73     index_mode = 2;
  74   //
  75   if(id==mmioFOURCC('L','I','S','T')){
  76     unsigned len=stream_read_dword_le(demuxer->stream);   // list size
  77     id=stream_read_dword_le(demuxer->stream);             // list type
  78     mp_msg(MSGT_HEADER,MSGL_DBG2,"LIST %.4s  len=%u\n",(char *) &id,len);
  79     if(len >= 4) {
  80         len -= 4;
  81         list_end=stream_tell(demuxer->stream)+((len+1)&(~1));
  82     } else {
  83         mp_tmsg(MSGT_HEADER,MSGL_WARN,"** empty list?!\n");
  84         list_end = 0;
  85     }
  86     mp_msg(MSGT_HEADER,MSGL_V,"list_end=0x%X\n",(int)list_end);
  87     if(id==listtypeAVIMOVIE){
  88       // found MOVI header
  89       if(!demuxer->movi_start) demuxer->movi_start=stream_tell(demuxer->stream);
  90       demuxer->movi_end=stream_tell(demuxer->stream)+len;
  91       mp_tmsg(MSGT_HEADER,MSGL_V,"Found movie at 0x%X - 0x%X\n",(int)demuxer->movi_start,(int)demuxer->movi_end);
  92       if(demuxer->stream->end_pos>demuxer->movi_end) demuxer->movi_end=demuxer->stream->end_pos;
  93       if(index_mode==-2 || index_mode==2 || index_mode==0)
  94         break; // reading from non-seekable source (stdin) or forced index or no index forced
  95       if(list_end>0) stream_seek(demuxer->stream,list_end); // skip movi
  96       list_end=0;
  97     }
  98     continue;
  99   }
 100   size2=stream_read_dword_le(demuxer->stream);
 101   mp_msg(MSGT_HEADER,MSGL_DBG2,"CHUNK %.4s  len=%u\n",(char *) &id,size2);
 102   chunksize=(size2+1)&(~1);
 103   switch(id){
 104
 105     // Indicates where the subject of the file is archived
 106     case mmioFOURCC('I','A','R','L'): hdr="Archival Location";break;
 107     // Lists the artist of the original subject of the file;
 108     // for example, "Michaelangelo."
 109     case mmioFOURCC('I','A','R','T'): hdr="Artist";break;
 110     // Lists the name of the person or organization that commissioned
 111     // the subject of the file; for example "Pope Julian II."
 112     case mmioFOURCC('I','C','M','S'): hdr="Commissioned";break;
 113     // Provides general comments about the file or the subject
 114     // of the file. If the comment is several sentences long, end each
 115     // sentence with a period. Do not include new-line characters.
 116     case mmioFOURCC('I','C','M','T'): hdr="Comments";break;
 117     // Records the copyright information for the file; for example,
 118     // "Copyright Encyclopedia International 1991." If there are multiple
 119     // copyrights, separate them by semicolon followed by a space.
 120     case mmioFOURCC('I','C','O','P'): hdr="Copyright";break;
 121     // Describes whether an image has been cropped and, if so, how it
 122     // was cropped; for example, "lower-right corner."
 123     case mmioFOURCC('I','C','R','D'): hdr="Creation Date";break;
 124     // Describes whether an image has been cropped and, if so, how it
 125     // was cropped; for example, "lower-right corner."
 126     case mmioFOURCC('I','C','R','P'): hdr="Cropped";break;
 127     // Specifies the size of the original subject of the file; for
 128     // example, "8.5 in h, 11 in w."
 129     case mmioFOURCC('I','D','I','M'): hdr="Dimensions";break;
 130     // Stores dots per inch setting of the digitizer used to
 131     // produce the file, such as "300."
 132     case mmioFOURCC('I','D','P','I'): hdr="Dots Per Inch";break;
 133     // Stores the of the engineer who worked on the file. If there are
 134     // multiple engineers, separate the names by a semicolon and a blank;
 135     // for example, "Smith, John; Adams, Joe."
 136     case mmioFOURCC('I','E','N','G'): hdr="Engineer";break;
 137     // Describes the original work, such as "landscape,", "portrait,"
 138     // "still liefe," etc.
 139     case mmioFOURCC('I','G','N','R'): hdr="Genre";break;
 140     // Provides a list of keywords that refer to the file or subject of the
 141     // file. Separate multiple keywords with a semicolon and a blank;
 142     // for example, "Seattle, aerial view; scenery."
 143     case mmioFOURCC('I','K','E','Y'): hdr="Keywords";break;
 144     // ILGT - Describes the changes in the lightness settings on the digitizer
 145     // required to produce the file. Note that the format of this information
 146     // depends on the hardware used.
 147     case mmioFOURCC('I','L','G','T'): hdr="Lightness";break;
 148     // IMED - Decribes the original subject of the file, such as
 149     // "computer image," "drawing," "lithograph," and so on.
 150     case mmioFOURCC('I','M','E','D'): hdr="Medium";break;
 151     // INAM - Stores the title of the subject of the file, such as
 152     // "Seattle from Above."
 153     case mmioFOURCC('I','N','A','M'): hdr="Name";break;
 154     // IPLT - Specifies the number of colors requested when digitizing
 155     // an image, such as "256."
 156     case mmioFOURCC('I','P','L','T'): hdr="Palette Setting";break;
 157     // IPRD - Specifies the name of title the file was originally intended
 158     // for, such as "Encyclopedia of Pacific Northwest Geography."
 159     case mmioFOURCC('I','P','R','D'): hdr="Product";break;
 160     // ISBJ - Decsribes the contents of the file, such as
 161     // "Aerial view of Seattle."
 162     case mmioFOURCC('I','S','B','J'): hdr="Subject";break;
 163     // ISFT - Identifies the name of the software packages used to create the
 164     // file, such as "Microsoft WaveEdit"
 165     case mmioFOURCC('I','S','F','T'): hdr="Software";break;
 166     // ISHP - Identifies the change in sharpness for the digitizer
 167     // required to produce the file (the format depends on the hardware used).
 168     case mmioFOURCC('I','S','H','P'): hdr="Sharpness";break;
 169     // ISRC - Identifies the name of the person or organization who
 170     // suplied the original subject of the file; for example, "Try Research."
 171     case mmioFOURCC('I','S','R','C'): hdr="Source";break;
 172     // ISRF - Identifies the original form of the material that was digitized,
 173     // such as "slide," "paper," "map," and so on. This is not necessarily
 174     // the same as IMED
 175     case mmioFOURCC('I','S','R','F'): hdr="Source Form";break;
 176     // ITCH - Identifies the technician who digitized the subject file;
 177     // for example, "Smith, John."
 178     case mmioFOURCC('I','T','C','H'): hdr="Technician";break;
 179     case mmioFOURCC('I','S','M','P'): hdr="Time Code";break;
 180     case mmioFOURCC('I','D','I','T'): hdr="Digitization Time";break;
 181
 182     case ckidAVIMAINHDR:          // read 'avih'
 183       stream_read(demuxer->stream,(char*) &avih,FFMIN(size2,sizeof(avih)));
 184       le2me_MainAVIHeader(&avih); // swap to machine endian
 185       chunksize-=FFMIN(size2,sizeof(avih));
 186       if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_avih(&avih,MSGL_V); // else print_avih_flags(&avih,MSGL_V);
 187       break;
 188     case ckidSTREAMHEADER: {      // read 'strh'
 189       AVIStreamHeader h;
 190       stream_read(demuxer->stream,(char*) &h,FFMIN(size2,sizeof(h)));
 191       le2me_AVIStreamHeader(&h);  // swap to machine endian
 192       chunksize-=FFMIN(size2,sizeof(h));
 193       ++stream_id;
 194       if(h.fccType==streamtypeVIDEO){
 195         sh_video=new_sh_video(demuxer,stream_id);
 196         mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Video stream found, -vid %d\n", "aviheader", stream_id);
 197         memcpy(&sh_video->video,&h,sizeof(h));
 198         sh_video->stream_delay = (float)sh_video->video.dwStart * sh_video->video.dwScale/sh_video->video.dwRate;
 199       } else
 200       if(h.fccType==streamtypeAUDIO){
 201         sh_audio=new_sh_audio(demuxer,stream_id);
 202         mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Audio stream found, -aid %d\n", "aviheader", stream_id);
 203         memcpy(&sh_audio->audio,&h,sizeof(h));
 204         sh_audio->stream_delay = (float)sh_audio->audio.dwStart * sh_audio->audio.dwScale/sh_audio->audio.dwRate;
 205       }
 206       last_fccType=h.fccType;
 207       last_fccHandler=h.fccHandler;
 208       if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_strh(&h,MSGL_V);
 209       break; }
 210     case mmioFOURCC('i', 'n', 'd', 'x'): {
 211       uint32_t i;
 212       avisuperindex_chunk *s;
 213
 214       if(!index_mode) break;
 215
 216       if(chunksize<=24){
 217         break;
 218       }
 219       priv->suidx_size++;
 220       priv->suidx = realloc_struct(priv->suidx, priv->suidx_size, sizeof (avisuperindex_chunk));
 221       s = &priv->suidx[priv->suidx_size-1];
 222
 223       chunksize-=24;
 224       memcpy(s->fcc, "indx", 4);
 225       s->dwSize = size2;
 226       s->wLongsPerEntry = stream_read_word_le(demuxer->stream);
 227       s->bIndexSubType = stream_read_char(demuxer->stream);
 228       s->bIndexType = stream_read_char(demuxer->stream);
 229       s->nEntriesInUse = stream_read_dword_le(demuxer->stream);
 230       *(uint32_t *)s->dwChunkId = stream_read_dword_le(demuxer->stream);
 231       stream_read(demuxer->stream, (char *)s->dwReserved, 3*4);
 232       memset(s->dwReserved, 0, 3*4);
 233
 234       print_avisuperindex_chunk(s,MSGL_V);
 235
 236       // Check and fix this useless crap
 237       if(s->wLongsPerEntry != sizeof (avisuperindex_entry)/4) {
 238           mp_msg (MSGT_HEADER, MSGL_WARN, "Broken super index chunk size: %u\n",s->wLongsPerEntry);
 239           s->wLongsPerEntry = sizeof(avisuperindex_entry)/4;
 240       }
 241       if( ((chunksize/4)/s->wLongsPerEntry) < s->nEntriesInUse){
 242         mp_msg (MSGT_HEADER, MSGL_WARN, "Broken super index chunk\n");
 243         s->nEntriesInUse = (chunksize/4)/s->wLongsPerEntry;
 244       }
 245
 246       s->aIndex = calloc(s->nEntriesInUse, sizeof (avisuperindex_entry));
 247       s->stdidx = calloc(s->nEntriesInUse, sizeof (avistdindex_chunk));
 248
 249       // now the real index of indices
 250       for (i=0; i<s->nEntriesInUse; i++) {
 251           chunksize-=16;
 252           s->aIndex[i].qwOffset = stream_read_qword_le(demuxer->stream);
 253           s->aIndex[i].dwSize = stream_read_dword_le(demuxer->stream);
 254           s->aIndex[i].dwDuration = stream_read_dword_le(demuxer->stream);
 255           mp_msg (MSGT_HEADER, MSGL_V, "ODML (%.4s): [%d] 0x%016"PRIx64" 0x%04x %u\n",
 256                   (s->dwChunkId), i,
 257                   (uint64_t)s->aIndex[i].qwOffset, s->aIndex[i].dwSize, s->aIndex[i].dwDuration);
 258       }
 259
 260       break; }
 261     case ckidSTREAMFORMAT: {      // read 'strf'
 262       if(last_fccType==streamtypeVIDEO){
 263         sh_video->bih=calloc(FFMAX(chunksize, sizeof(BITMAPINFOHEADER)), 1);
 264 //        sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize);
 265         mp_tmsg(MSGT_HEADER,MSGL_V,"Found 'bih', %u bytes of %d\n",chunksize,sizeof(BITMAPINFOHEADER));
 266         stream_read(demuxer->stream,(char*) sh_video->bih,chunksize);
 267         le2me_BITMAPINFOHEADER(sh_video->bih);  // swap to machine endian
 268         if (sh_video->bih->biSize > chunksize && sh_video->bih->biSize > sizeof(BITMAPINFOHEADER))
 269                 sh_video->bih->biSize = chunksize;
 270         // fixup MS-RLE header (seems to be broken for <256 color files)
 271         if(sh_video->bih->biCompression<=1 && sh_video->bih->biSize==40)
 272             sh_video->bih->biSize=chunksize;
 273         if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_video_header(sh_video->bih,MSGL_V);
 274         chunksize=0;
 275         sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale;
 276         sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate;
 277         sh_video->format = sh_video->bih->biCompression;
 278 //        if(demuxer->video->id==-1) demuxer->video->id=stream_id;
 279         // IdxFix:
 280         idxfix_videostream=stream_id;
 281         switch(sh_video->bih->biCompression){
 282         case mmioFOURCC('M', 'P', 'G', '4'):
 283         case mmioFOURCC('m', 'p', 'g', '4'):
 284         case mmioFOURCC('D', 'I', 'V', '1'):
 285           idxfix_divx=3; // set index recovery mpeg4 flavour: msmpeg4v1
 286           mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for M$ mpg4v1 video.\n");
 287           break;
 288         case mmioFOURCC('D', 'I', 'V', '3'):
 289         case mmioFOURCC('d', 'i', 'v', '3'):
 290         case mmioFOURCC('D', 'I', 'V', '4'):
 291         case mmioFOURCC('d', 'i', 'v', '4'):
 292         case mmioFOURCC('D', 'I', 'V', '5'):
 293         case mmioFOURCC('d', 'i', 'v', '5'):
 294         case mmioFOURCC('D', 'I', 'V', '6'):
 295         case mmioFOURCC('d', 'i', 'v', '6'):
 296         case mmioFOURCC('M', 'P', '4', '3'):
 297         case mmioFOURCC('m', 'p', '4', '3'):
 298         case mmioFOURCC('M', 'P', '4', '2'):
 299         case mmioFOURCC('m', 'p', '4', '2'):
 300         case mmioFOURCC('D', 'I', 'V', '2'):
 301         case mmioFOURCC('A', 'P', '4', '1'):
 302           idxfix_divx=1; // set index recovery mpeg4 flavour: msmpeg4v3
 303           mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for DIVX3 video.\n");
 304           break;
 305         case mmioFOURCC('D', 'I', 'V', 'X'):
 306         case mmioFOURCC('d', 'i', 'v', 'x'):
 307         case mmioFOURCC('D', 'X', '5', '0'):
 308         case mmioFOURCC('X', 'V', 'I', 'D'):
 309         case mmioFOURCC('x', 'v', 'i', 'd'):
 310         case mmioFOURCC('F', 'M', 'P', '4'):
 311         case mmioFOURCC('f', 'm', 'p', '4'):
 312           idxfix_divx=2; // set index recovery mpeg4 flavour: generic mpeg4
 313           mp_tmsg(MSGT_HEADER,MSGL_V,"Regenerating keyframe table for MPEG-4 video.\n");
 314           break;
 315         }
 316       } else
 317       if(last_fccType==streamtypeAUDIO){
 318         unsigned wf_size = chunksize<sizeof(WAVEFORMATEX)?sizeof(WAVEFORMATEX):chunksize;
 319         sh_audio->wf=calloc(wf_size,1);
 320 //        sh_audio->wf=malloc(chunksize); memset(sh_audio->wf,0,chunksize);
 321         mp_tmsg(MSGT_HEADER,MSGL_V,"Found 'wf', %d bytes of %d\n",chunksize,sizeof(WAVEFORMATEX));
 322         stream_read(demuxer->stream,(char*) sh_audio->wf,chunksize);
 323         le2me_WAVEFORMATEX(sh_audio->wf);
 324         if (sh_audio->wf->cbSize != 0 &&
 325             wf_size < sizeof(WAVEFORMATEX)+sh_audio->wf->cbSize) {
 326             sh_audio->wf=realloc(sh_audio->wf, sizeof(WAVEFORMATEX)+sh_audio->wf->cbSize);
 327         }
 328         sh_audio->format=sh_audio->wf->wFormatTag;
 329         if (sh_audio->format == 1 &&
 330             last_fccHandler == mmioFOURCC('A', 'x', 'a', 'n'))
 331             sh_audio->format = last_fccHandler;
 332         sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
 333         chunksize=0;
 334         if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_wave_header(sh_audio->wf,MSGL_V);
 335         ++priv->audio_streams;
 336 //        if(demuxer->audio->id==-1) demuxer->audio->id=stream_id;
 337       }
 338       break;
 339     }
 340     case mmioFOURCC('v', 'p', 'r', 'p'): {
 341         VideoPropHeader *vprp = malloc(chunksize);
 342         unsigned int i;
 343         stream_read(demuxer->stream, (void*)vprp, chunksize);
 344         le2me_VideoPropHeader(vprp);
 345         chunksize -= sizeof(*vprp)-sizeof(vprp->FieldInfo);
 346         chunksize /= sizeof(VIDEO_FIELD_DESC);
 347         if (vprp->nbFieldPerFrame > chunksize) {
 348             vprp->nbFieldPerFrame = chunksize;
 349         }
 350         chunksize = 0;
 351         for (i=0; i<vprp->nbFieldPerFrame; i++) {
 352                 le2me_VIDEO_FIELD_DESC(&vprp->FieldInfo[i]);
 353         }
 354         if (sh_video) {
 355                 sh_video->aspect = GET_AVI_ASPECT(vprp->dwFrameAspectRatio);
 356         }
 357         if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_vprp(vprp,MSGL_V);
 358         free(vprp);
 359         break;
 360     }
 361     case mmioFOURCC('d', 'm', 'l', 'h'): {
 362         // dmlh 00 00 00 04 frms
 363         unsigned int total_frames = stream_read_dword_le(demuxer->stream);
 364         mp_tmsg(MSGT_HEADER,MSGL_V,"AVI: dmlh found (size=%d) (total_frames=%d)\n", chunksize, total_frames);
 365         stream_skip(demuxer->stream, chunksize-4);
 366         chunksize = 0;
 367     }
 368     break;
 369     case ckidAVINEWINDEX:
 370     if(demuxer->movi_end>stream_tell(demuxer->stream))
 371         demuxer->movi_end=stream_tell(demuxer->stream); // fixup movi-end
 372     if(index_mode && !priv->isodml){
 373       int i;
 374       priv->idx_size=size2>>4;
 375       mp_tmsg(MSGT_HEADER,MSGL_V,"Reading INDEX block, %d chunks for %d frames (fpos=%"PRId64").\n",
 376         priv->idx_size,avih.dwTotalFrames, (int64_t)stream_tell(demuxer->stream));
 377       priv->idx=malloc(priv->idx_size<<4);
 378 //      printf("\nindex to %p !!!!! (priv=%p)\n",priv->idx,priv);
 379       stream_read(demuxer->stream,(char*)priv->idx,priv->idx_size<<4);
 380       for (i = 0; i < priv->idx_size; i++) {    // swap index to machine endian
 381         AVIINDEXENTRY *entry=(AVIINDEXENTRY*)priv->idx + i;
 382         le2me_AVIINDEXENTRY(entry);
 383         /*
 384          * We (ab)use the upper word for bits 32-47 of the offset, so
 385          * we'll clear them here.
 386          * FIXME: AFAIK no codec uses them, but if one does it will break
 387          */
 388         entry->dwFlags&=0xffff;
 389       }
 390       chunksize-=priv->idx_size<<4;
 391       if( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx,priv->idx_size,MSGL_DBG2);
 392     }
 393     break;
 394     /* added May 2002 */
 395     case mmioFOURCC('R','I','F','F'): {
 396         char riff_type[4];
 397
 398         mp_tmsg(MSGT_HEADER, MSGL_V, "Additional RIFF header...\n");
 399         stream_read(demuxer->stream, riff_type, sizeof riff_type);
 400         if (strncmp(riff_type, "AVIX", sizeof riff_type))
 401             mp_tmsg(MSGT_HEADER, MSGL_WARN, "** Warning: this is no extended AVI header..\n");
 402         else {
 403                 /*
 404                  * We got an extended AVI header, so we need to switch to
 405                  * ODML to get seeking to work, provided we got indx chunks
 406                  * in the header (suidx_size > 0).
 407                  */
 408                 if (priv->suidx_size > 0)
 409                         priv->isodml = 1;
 410         }
 411         chunksize = 0;
 412         list_end = 0; /* a new list will follow */
 413         break; }
 414     case ckidAVIPADDING:
 415         stream_skip(demuxer->stream, chunksize);
 416         chunksize = 0;
 417         break;
 418   }
 419   if(hdr){
 420     mp_msg(MSGT_HEADER,MSGL_V,"hdr=%s  size=%u\n",hdr,size2);
 421     if(size2==3)
 422       chunksize=1; // empty
 423     else {
 424       char buf[256];
 425       int len=(size2<250)?size2:250;
 426       stream_read(demuxer->stream,buf,len);
 427       chunksize-=len;
 428       buf[len]=0;
 429       mp_msg(MSGT_HEADER,MSGL_V,"%-10s: %s\n",hdr,buf);
 430       demux_info_add(demuxer, hdr, buf);
 431     }
 432   }
 433   mp_msg(MSGT_HEADER,MSGL_DBG2,"list_end=0x%"PRIX64"  pos=0x%"PRIX64"  chunksize=0x%"PRIX64"  next=0x%"PRIX64"\n",
 434       (int64_t)list_end, (int64_t)stream_tell(demuxer->stream),
 435       (int64_t)chunksize, (int64_t)chunksize+(int64_t)stream_tell(demuxer->stream));
 436   if(list_end>0 &&
 437      chunksize+stream_tell(demuxer->stream) == list_end) list_end=0;
 438   if(list_end>0 && chunksize+stream_tell(demuxer->stream)>list_end){
 439       mp_tmsg(MSGT_HEADER,MSGL_V,"Broken chunk? chunksize=%d (id=%.4s)\n",chunksize,(char *) &id);
 440       stream_seek(demuxer->stream,list_end);
 441       list_end=0;
 442   } else
 443   if(chunksize>0) stream_skip(demuxer->stream,chunksize); else
 444   if((int)chunksize<0) mp_msg(MSGT_HEADER,MSGL_WARN,"chunksize=%u  (id=%.4s)\n",chunksize,(char *) &id);
 445
 446 }
 447
 448 if (priv->suidx_size > 0 && priv->idx_size == 0) {
 449     /*
 450      * No NEWAVIINDEX, but we got an OpenDML index.
 451      */
 452     priv->isodml = 1;
 453 }
 454
 455 if (priv->isodml && (index_mode==-1 || index_mode==0 || index_mode==1)) {
 456     int i, j, k;
 457
 458     avisuperindex_chunk *cx;
 459     AVIINDEXENTRY *idx;
 460
 461
 462     if (priv->idx_size) free(priv->idx);
 463     priv->idx_size = 0;
 464     priv->idx_offset = 0;
 465     priv->idx = NULL;
 466
 467     mp_tmsg(MSGT_HEADER, MSGL_INFO, "AVI: ODML: Building ODML index (%d superindexchunks).\n", priv->suidx_size);
 468
 469     // read the standard indices
 470     for (cx = &priv->suidx[0], i=0; i<priv->suidx_size; cx++, i++) {
 471         stream_reset(demuxer->stream);
 472         for (j=0; j<cx->nEntriesInUse; j++) {
 473             int ret1, ret2;
 474             memset(&cx->stdidx[j], 0, 32);
 475             ret1 = stream_seek(demuxer->stream, (off_t)cx->aIndex[j].qwOffset);
 476             ret2 = stream_read(demuxer->stream, (char *)&cx->stdidx[j], 32);
 477             if (ret1 != 1 || ret2 != 32 || cx->stdidx[j].nEntriesInUse==0) {
 478                 // this is a broken file (probably incomplete) let the standard
 479                 // gen_index routine handle this
 480                 priv->isodml = 0;
 481                 priv->idx_size = 0;
 482                 mp_tmsg(MSGT_HEADER, MSGL_WARN, "AVI: ODML: Broken (incomplete?) file detected. Will use traditional index.\n");
 483                 goto freeout;
 484             }
 485
 486             le2me_AVISTDIDXCHUNK(&cx->stdidx[j]);
 487             print_avistdindex_chunk(&cx->stdidx[j],MSGL_V);
 488             priv->idx_size += cx->stdidx[j].nEntriesInUse;
 489             cx->stdidx[j].aIndex = malloc(cx->stdidx[j].nEntriesInUse*sizeof(avistdindex_entry));
 490             stream_read(demuxer->stream, (char *)cx->stdidx[j].aIndex,
 491                     cx->stdidx[j].nEntriesInUse*sizeof(avistdindex_entry));
 492             for (k=0;k<cx->stdidx[j].nEntriesInUse; k++)
 493                 le2me_AVISTDIDXENTRY(&cx->stdidx[j].aIndex[k]);
 494
 495             cx->stdidx[j].dwReserved3 = 0;
 496
 497         }
 498     }
 499
 500     /*
 501      * We convert the index by translating all entries into AVIINDEXENTRYs
 502      * and sorting them by offset.  The result should be the same index
 503      * we would get with -forceidx.
 504      */
 505
 506     idx = priv->idx = malloc(priv->idx_size * sizeof (AVIINDEXENTRY));
 507
 508     for (cx = priv->suidx; cx != &priv->suidx[priv->suidx_size]; cx++) {
 509         avistdindex_chunk *sic;
 510         for (sic = cx->stdidx; sic != &cx->stdidx[cx->nEntriesInUse]; sic++) {
 511             avistdindex_entry *sie;
 512             for (sie = sic->aIndex; sie != &sic->aIndex[sic->nEntriesInUse]; sie++) {
 513                 uint64_t off = sic->qwBaseOffset + sie->dwOffset - 8;
 514                 memcpy(&idx->ckid, sic->dwChunkId, 4);
 515                 idx->dwChunkOffset = off;
 516                 idx->dwFlags = (off >> 32) << 16;
 517                 idx->dwChunkLength = sie->dwSize & 0x7fffffff;
 518                 idx->dwFlags |= (sie->dwSize&0x80000000)?0x0:AVIIF_KEYFRAME; // bit 31 denotes !keyframe
 519                 idx++;
 520             }
 521         }
 522     }
 523     qsort(priv->idx, priv->idx_size, sizeof(AVIINDEXENTRY), avi_idx_cmp);
 524
 525     /*
 526        Hack to work around a "wrong" index in some divx odml files
 527        (processor_burning.avi as an example)
 528        They have ##dc on non keyframes but the ix00 tells us they are ##db.
 529        Read the fcc of a non-keyframe vid frame and check it.
 530      */
 531
 532     {
 533         uint32_t id;
 534         uint32_t db = 0;
 535         stream_reset (demuxer->stream);
 536
 537         // find out the video stream id. I have seen files with 01db.
 538         for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){
 539             unsigned char res[2];
 540             if (odml_get_vstream_id(idx->ckid, res)) {
 541                 db = mmioFOURCC(res[0], res[1], 'd', 'b');
 542                 break;
 543             }
 544         }
 545
 546         // find first non keyframe
 547         for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){
 548             if (!(idx->dwFlags & AVIIF_KEYFRAME) && idx->ckid == db) break;
 549         }
 550         if (i<priv->idx_size && db) {
 551             stream_seek(demuxer->stream, AVI_IDX_OFFSET(idx));
 552             id = stream_read_dword_le(demuxer->stream);
 553             if (id && id != db) // index fcc and real fcc differ? fix it.
 554                 for (idx = &((AVIINDEXENTRY *)priv->idx)[0], i=0; i<priv->idx_size; i++, idx++){
 555                     if (!(idx->dwFlags & AVIIF_KEYFRAME) && idx->ckid == db)
 556                         idx->ckid = id;
 557             }
 558         }
 559     }
 560
 561     if ( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx, priv->idx_size,MSGL_DBG2);
 562
 563     demuxer->movi_end=demuxer->stream->end_pos;
 564
 565 freeout:
 566
 567     // free unneeded stuff
 568     cx = &priv->suidx[0];
 569     do {
 570         for (j=0;j<cx->nEntriesInUse;j++)
 571             if (cx->stdidx[j].nEntriesInUse) free(cx->stdidx[j].aIndex);
 572         free(cx->stdidx);
 573
 574     } while (cx++ != &priv->suidx[priv->suidx_size-1]);
 575     free(priv->suidx);
 576
 577 }
 578
 579 /* Read a saved index file */
 580 if (index_file_load) {
 581   FILE *fp;
 582   char magic[7];
 583   unsigned int i;
 584
 585   if ((fp = fopen(index_file_load, "r")) == NULL) {
 586     mp_tmsg(MSGT_HEADER,MSGL_ERR, "Can't read index file %s: %s\n", index_file_load, strerror(errno));
 587     goto gen_index;
 588   }
 589   fread(&magic, 6, 1, fp);
 590   if (strncmp(magic, "MPIDX1", 6)) {
 591     mp_tmsg(MSGT_HEADER,MSGL_ERR, "%s is not a valid MPlayer index file.\n", index_file_load);
 592     goto gen_index;
 593   }
 594   fread(&priv->idx_size, sizeof(priv->idx_size), 1, fp);
 595   priv->idx=malloc(priv->idx_size*sizeof(AVIINDEXENTRY));
 596   if (!priv->idx) {
 597     mp_tmsg(MSGT_HEADER,MSGL_ERR, "Could not allocate memory for index data from %s.\n", index_file_load);
 598     priv->idx_size = 0;
 599     goto gen_index;
 600   }
 601
 602   for (i=0; i<priv->idx_size;i++) {
 603     AVIINDEXENTRY *idx;
 604     idx=&((AVIINDEXENTRY *)priv->idx)[i];
 605     fread(idx, sizeof(AVIINDEXENTRY), 1, fp);
 606     if (feof(fp)) {
 607       mp_tmsg(MSGT_HEADER,MSGL_ERR, "premature end of index file %s\n", index_file_load);
 608       free(priv->idx);
 609       priv->idx_size = 0;
 610       goto gen_index;
 611     }
 612   }
 613   fclose(fp);
 614   mp_tmsg(MSGT_HEADER,MSGL_INFO, "Loaded index file: %s\n", index_file_load);
 615 }
 616 gen_index:
 617 if(index_mode>=2 || (priv->idx_size==0 && index_mode==1)){
 618   // build index for file:
 619   stream_reset(demuxer->stream);
 620   stream_seek(demuxer->stream,demuxer->movi_start);
 621
 622   priv->idx_pos=0;
 623   priv->idx_size=0;
 624   priv->idx=NULL;
 625
 626   while(1){
 627     int id;
 628     unsigned len;
 629     off_t skip;
 630     AVIINDEXENTRY* idx;
 631     unsigned int c;
 632     demuxer->filepos=stream_tell(demuxer->stream);
 633     if(demuxer->filepos>=demuxer->movi_end && demuxer->movi_start<demuxer->movi_end) break;
 634     id=stream_read_dword_le(demuxer->stream);
 635     len=stream_read_dword_le(demuxer->stream);
 636     if(id==mmioFOURCC('L','I','S','T') || id==mmioFOURCC('R', 'I', 'F', 'F')){
 637       id=stream_read_dword_le(demuxer->stream); // list or RIFF type
 638       continue;
 639     }
 640     if(stream_eof(demuxer->stream)) break;
 641     if(!id || avi_stream_id(id)==100) goto skip_chunk; // bad ID (or padding?)
 642
 643     if(priv->idx_pos>=priv->idx_size){
 644 //      priv->idx_size+=32;
 645       priv->idx_size+=1024; // +16kB
 646       priv->idx=realloc(priv->idx,priv->idx_size*sizeof(AVIINDEXENTRY));
 647       if(!priv->idx){priv->idx_pos=0; break;} // error!
 648     }
 649     idx=&((AVIINDEXENTRY *)priv->idx)[priv->idx_pos++];
 650     idx->ckid=id;
 651     idx->dwFlags=AVIIF_KEYFRAME; // FIXME
 652     idx->dwFlags|=(demuxer->filepos>>16)&0xffff0000U;
 653     idx->dwChunkOffset=(unsigned long)demuxer->filepos;
 654     idx->dwChunkLength=len;
 655
 656     c=stream_read_dword(demuxer->stream);
 657
 658     if(!len) idx->dwFlags&=~AVIIF_KEYFRAME;
 659
 660     // Fix keyframes for DivX files:
 661     if(idxfix_divx)
 662       if(avi_stream_id(id)==idxfix_videostream){
 663         switch(idxfix_divx){
 664             case 3: c=stream_read_dword(demuxer->stream)<<5; //skip 32+5 bits for m$mpeg4v1
 665             case 1: if(c&0x40000000) idx->dwFlags&=~AVIIF_KEYFRAME;break; // divx 3
 666             case 2: if(c==0x1B6) idx->dwFlags&=~AVIIF_KEYFRAME;break; // divx 4
 667         }
 668       }
 669
 670     // update status line:
 671     { static off_t lastpos;
 672       off_t pos;
 673       off_t len=demuxer->movi_end-demuxer->movi_start;
 674       if(len){
 675           pos=100*(demuxer->filepos-demuxer->movi_start)/len; // %
 676       } else {
 677           pos=(demuxer->filepos-demuxer->movi_start)>>20; // MB
 678       }
 679       if(pos!=lastpos){
 680           lastpos=pos;
 681           mp_tmsg(MSGT_HEADER,MSGL_STATUS, "Generating Index: %3lu %s     \r",
 682                  (unsigned long)pos, len?"%":"MB");
 683       }
 684     }
 685     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);
 686 #if 0
 687     { unsigned char tmp[64];
 688       int i;
 689       stream_read(demuxer->stream,tmp,64);
 690       printf("%.4s",&id);
 691       for(i=0;i<64;i++) printf(" %02X",tmp[i]);
 692       printf("\n");
 693     }
 694 #endif
 695 skip_chunk:
 696     skip=(len+1)&(~1UL); // total bytes in this chunk
 697     stream_seek(demuxer->stream,8+demuxer->filepos+skip);
 698   }
 699   priv->idx_size=priv->idx_pos;
 700   mp_tmsg(MSGT_HEADER,MSGL_INFO,"AVI: Generated index table for %d chunks!\n",priv->idx_size);
 701   if( mp_msg_test(MSGT_HEADER,MSGL_DBG2) ) print_index(priv->idx,priv->idx_size,MSGL_DBG2);
 702
 703   /* Write generated index to a file */
 704   if (index_file_save) {
 705     FILE *fp;
 706     unsigned int i;
 707
 708     if ((fp=fopen(index_file_save, "w")) == NULL) {
 709       mp_tmsg(MSGT_HEADER,MSGL_ERR, "Couldn't write index file %s: %s\n", index_file_save, strerror(errno));
 710       return;
 711     }
 712     fwrite("MPIDX1", 6, 1, fp);
 713     fwrite(&priv->idx_size, sizeof(priv->idx_size), 1, fp);
 714     for (i=0; i<priv->idx_size; i++) {
 715       AVIINDEXENTRY *idx = &((AVIINDEXENTRY *)priv->idx)[i];
 716       fwrite(idx, sizeof(AVIINDEXENTRY), 1, fp);
 717     }
 718     fclose(fp);
 719     mp_tmsg(MSGT_HEADER,MSGL_INFO, "Saved index file: %s\n", index_file_save);
 720   }
 721 }
 722 }
 723