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restore keyframes of DivX files (hack) 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@569 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
arpi_esp 2001-04-22 01:04:18 +00:00
parent b128050fac
commit 9eb56bf2ee
1 changed files with 39 additions and 3 deletions
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42
aviheader.c
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@ -5,6 +5,8 @@ void read_avi_header(int index_mode){
sh_audio_t *sh_audio=NULL;
sh_video_t *sh_video=NULL;
int stream_id=-1;
int idxfix_videostream=0;
int idxfix_divx=0;
//---- AVI header:
avi_header.idx_size=0;
@ -64,6 +66,22 @@ while(1){
// sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale;
// sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate;
// if(demuxer->video->id==-1) demuxer->video->id=stream_id;
// IdxFix:
idxfix_videostream=stream_id;
switch(sh_video->bih->biCompression){
case mmioFOURCC('D', 'I', 'V', '3'):
case mmioFOURCC('d', 'i', 'v', '3'):
case mmioFOURCC('D', 'I', 'V', '4'):
case mmioFOURCC('d', 'i', 'v', '4'):
case mmioFOURCC('D', 'I', 'V', '5'):
case mmioFOURCC('d', 'i', 'v', '5'):
case mmioFOURCC('D', 'I', 'V', '6'):
case mmioFOURCC('d', 'i', 'v', '6'):
case mmioFOURCC('M', 'P', '4', '3'):
case mmioFOURCC('m', 'p', '4', '3'):
case mmioFOURCC('A', 'P', '4', '1'):
idxfix_divx=1; // we can fix keyframes only for divx coded files!
}
} else
if(last_fccType==streamtypeAUDIO){
sh_audio->wf=calloc((chunksize<sizeof(WAVEFORMATEX))?sizeof(WAVEFORMATEX):chunksize,1);
@ -92,7 +110,7 @@ while(1){
}
if(avi_header.idx_size==0 && index_mode==1){
if(index_mode>=2 || (avi_header.idx_size==0 && index_mode==1)){
// build index for file:
stream_reset(demuxer->stream);
stream_seek(demuxer->stream,avi_header.movi_start);
@ -122,9 +140,27 @@ if(avi_header.idx_size==0 && index_mode==1){
idx->dwFlags=AVIIF_KEYFRAME; // FIXME
idx->dwChunkOffset=demuxer->filepos;
idx->dwChunkLength=len;
if(verbose>=2) printf("0x%08X 0x%08X %.4s\n",demuxer->filepos,id,&id);
// Fix keyframes for DivX files:
if(idxfix_divx)
if(avi_stream_id(id)==idxfix_videostream){
unsigned char c=stream_read_char(demuxer->stream);
// --skip;
if(!(c&0x40)) idx->dwFlags=0;
}
if(verbose>=2) printf("0x%08X 0x%08X %.4s %X\n",demuxer->filepos,id,&id,idx->dwFlags);
#if 0
{ unsigned char tmp[64];
int i;
stream_read(demuxer->stream,tmp,64);
printf("%.4s",&id);
for(i=0;i<64;i++) printf(" %02X",tmp[i]);
printf("\n");
}
#endif
skip=(len+1)&(~1); // total bytes in this chunk
stream_skip(demuxer->stream,skip);
stream_seek(demuxer->stream,8+demuxer->filepos+skip);
}
avi_header.idx_size=avi_header.idx_pos;
printf("AVI: Generated index table for %d chunks!\n",avi_header.idx_size);