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AVI demuxer fixes:

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- workaround for files with bad index (first chunk absolute, others relative offsets)
  (fixes many 'no video stream found' bugreports)
- check for LIST boundaries, truncate if sub-chunk wraps LIST endpos (FMP_3.avi)
- support/workaround for empty info blocks with size=3 (FMP_3.avi)
- lots of new avi info types added (from avifile source), just for fun...


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4665 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
arpi 2002-02-12 01:20:59 +00:00
parent 95941f04d2
commit 0e60037ce8
1 changed files with 93 additions and 5 deletions
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98
libmpdemux/aviheader.c
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@ -32,6 +32,7 @@ int stream_id=-1;
int idxfix_videostream=0;
int idxfix_divx=0;
avi_priv_t* priv=demuxer->priv;
off_t list_end=0;
//---- AVI header:
priv->idx_size=0;
@ -48,6 +49,8 @@ while(1){
int len=stream_read_dword_le(demuxer->stream)-4; // list size
id=stream_read_dword_le(demuxer->stream); // list type
mp_msg(MSGT_HEADER,MSGL_DBG2,"LIST %.4s len=%d\n",(char *) &id,len);
list_end=stream_tell(demuxer->stream)+((len+1)&(~1));
printf("list_end=0x%X\n",(int)list_end);
if(id==listtypeAVIMOVIE){
// found MOVI header
if(!demuxer->movi_start) demuxer->movi_start=stream_tell(demuxer->stream);
@ -65,12 +68,84 @@ while(1){
mp_msg(MSGT_HEADER,MSGL_DBG2,"CHUNK %.4s len=%d\n",(char *) &id,size2);
chunksize=(size2+1)&(~1);
switch(id){
case mmioFOURCC('I','S','F','T'): hdr="Software";break;
case mmioFOURCC('I','N','A','M'): hdr="Name";break;
case mmioFOURCC('I','S','B','J'): hdr="Title";break;
case mmioFOURCC('I','A','R','T'): hdr="Author";break;
// Indicates where the subject of the file is archived
case mmioFOURCC('I','A','R','L'): hdr="Archival Location";break;
// Lists the artist of the original subject of the file;
// for example, "Michaelangelo."
case mmioFOURCC('I','A','R','T'): hdr="Artist";break;
// Lists the name of the person or organization that commissioned
// the subject of the file; for example "Pope Julian II."
case mmioFOURCC('I','C','M','S'): hdr="Commissioned";break;
// Provides general comments about the file or the subject
// of the file. If the comment is several sentences long, end each
// sentence with a period. Do not include new-line characters.
case mmioFOURCC('I','C','M','T'): hdr="Comments";break;
// Records the copyright information for the file; for example,
// "Copyright Encyclopedia International 1991." If there are multiple
// copyrights, separate them by semicolon followed by a space.
case mmioFOURCC('I','C','O','P'): hdr="Copyright";break;
case mmioFOURCC('I','C','M','T'): hdr="Comment";break;
// Describes whether an image has been cropped and, if so, how it
// was cropped; for example, "lower-right corner."
case mmioFOURCC('I','C','R','D'): hdr="Creation Date";break;
// Describes whether an image has been cropped and, if so, how it
// was cropped; for example, "lower-right corner."
case mmioFOURCC('I','C','R','P'): hdr="Cropped";break;
// Specifies the size of the original subject of the file; for
// example, "8.5 in h, 11 in w."
case mmioFOURCC('I','D','I','M'): hdr="Dimensions";break;
// Stores dots per inch setting of the digitizer used to
// produce the file, such as "300."
case mmioFOURCC('I','D','P','I'): hdr="Dots Per Inch";break;
// Stores the of the engineer who worked on the file. If there are
// multiple engineers, separate the names by a semicolon and a blank;
// for example, "Smith, John; Adams, Joe."
case mmioFOURCC('I','E','N','G'): hdr="Engineer";break;
// Describes the original work, such as "landscape,", "portrait,"
// "still liefe," etc.
case mmioFOURCC('I','G','N','R'): hdr="Genre";break;
// Provides a list of keywords that refer to the file or subject of the
// file. Separate multiple keywords with a semicolon and a blank;
// for example, "Seattle, aerial view; scenery."
case mmioFOURCC('I','K','E','Y'): hdr="Keywords";break;
// ILGT - Describes the changes in the lightness settings on the digitizer
// required to produce the file. Note that the format of this information
// depends on the hardware used.
case mmioFOURCC('I','L','G','T'): hdr="Lightness";break;
// IMED - Decribes the original subject of the file, such as
// "computer image," "drawing," "lithograph," and so on.
case mmioFOURCC('I','M','E','D'): hdr="Medium";break;
// INAM - Stores the title of the subject of the file, such as
// "Seattle from Above."
case mmioFOURCC('I','N','A','M'): hdr="Name";break;
// IPLT - Specifies the number of colors requested when digitizing
// an image, such as "256."
case mmioFOURCC('I','P','L','T'): hdr="Palette Setting";break;
// IPRD - Specifies the name of title the file was originally intended
// for, such as "Encyclopedia of Pacific Northwest Geography."
case mmioFOURCC('I','P','R','D'): hdr="Product";break;
// ISBJ - Decsribes the contents of the file, such as
// "Aerial view of Seattle."
case mmioFOURCC('I','S','B','J'): hdr="Subject";break;
// ISFT - Identifies the name of the software packages used to create the
// file, such as "Microsoft WaveEdit"
case mmioFOURCC('I','S','F','T'): hdr="Software";break;
// ISHP - Identifies the change in sharpness for the digitizer
// required to produce the file (the format depends on the hardware used).
case mmioFOURCC('I','S','H','P'): hdr="Sharpness";break;
// ISRC - Identifies the name of the person or organization who
// suplied the original subject of the file; for example, "Try Research."
case mmioFOURCC('I','S','R','C'): hdr="Source";break;
// ISRF - Identifies the original form of the material that was digitized,
// such as "slide," "paper," "map," and so on. This is not necessarily
// the same as IMED
case mmioFOURCC('I','S','R','F'): hdr="Source Form";break;
// ITCH - Identifies the technician who digitized the subject file;
// for example, "Smith, John."
case mmioFOURCC('I','T','C','H'): hdr="Technician";break;
case mmioFOURCC('I','S','M','P'): hdr="Time Code";break;
case mmioFOURCC('I','D','I','T'): hdr="Digitization Time";break;
case ckidAVIMAINHDR: // read 'avih'
stream_read(demuxer->stream,(char*) &avih,MIN(size2,sizeof(avih)));
le2me_MainAVIHeader(&avih); // swap to machine endian
@ -169,6 +244,10 @@ while(1){
}
}
if(hdr){
printf("hdr=%s size=%d\n",hdr,size2);
if(size2==3)
chunksize=1; // empty
else {
char buf[256];
int len=(size2<250)?size2:250;
stream_read(demuxer->stream,buf,len);
@ -176,7 +255,16 @@ while(1){
buf[len]=0;
mp_msg(MSGT_HEADER,MSGL_V,"%-10s: %s\n",hdr,buf);
demux_info_add(demuxer, hdr, buf);
}
}
mp_msg(MSGT_HEADER,MSGL_DBG2,"list_end=0x%X pos=0x%X chunksize=0x%X next=0x%X\n",
(int)list_end, (int)stream_tell(demuxer->stream),
chunksize, (int)chunksize+stream_tell(demuxer->stream));
if(list_end>0 && chunksize+stream_tell(demuxer->stream)>list_end){
mp_msg(MSGT_HEADER,MSGL_V,"Broken chunk? chunksize=%d (id=%.4s)\n",chunksize,(char *) &id);
stream_seek(demuxer->stream,list_end);
list_end=0;
} else
if(chunksize>0) stream_skip(demuxer->stream,chunksize); else
if(chunksize<0) mp_msg(MSGT_HEADER,MSGL_WARN,"chunksize=%d (id=%.4s)\n",chunksize,(char *) &id);