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Fix vp61 keyframe search (do not skip blocks if 1st frame is keyframe)

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@12180 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
rtognimp 2004-04-12 17:13:15 +00:00
parent c526173ede
commit 14db042e2e
1 changed files with 11 additions and 13 deletions
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24
libmpdemux/demux_nsv.c
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@ -134,6 +134,7 @@ demuxer_t* demux_open_nsv ( demuxer_t* demuxer )
// last 2 bytes 17 and 18 are unknown but right after that comes the length
unsigned char hdr[17];
int videolen,audiolen;
unsigned char buf[9];
sh_video_t *sh_video = NULL;
sh_audio_t *sh_audio = NULL;
@ -265,23 +266,20 @@ demuxer_t* demux_open_nsv ( demuxer_t* demuxer )
// here we search for the correct keyframe
// vp6 keyframe is when the 2nd byte of the vp6 header is 0x36
if(priv->v_format==mmioFOURCC('V','P','6','1')){
stream_read(demuxer->stream,hdr,9);
videolen=(hdr[2]>>4)|(hdr[3]<<4)|(hdr[4]<<0xC);
audiolen=(hdr[5])|(hdr[6]<<8);
mp_msg(MSGT_DEMUX,MSGL_V,"demux_nsv: Header: %08X\n",*hdr);
stream_skip(demuxer->stream, videolen+audiolen-2);
stream_read(demuxer->stream,hdr,9);
stream_read(demuxer->stream,buf,9);
if (hdr[8]!=0x36) {
while(hdr[8]!=0x36){
videolen=(hdr[2]>>4)|(hdr[3]<<4)|(hdr[4]<<0xC);
audiolen=(hdr[5])|(hdr[6]<<8);
mp_msg(MSGT_DEMUX,MSGL_V,"demux_nsv: searching vp6 keyframe...\n");
while(buf[8]!=0x36){
mp_msg(MSGT_DEMUX,MSGL_DBG2,"demux_nsv: vp6 block skip.\n");
videolen=(buf[2]>>4)|(buf[3]<<4)|(buf[4]<<0xC);
audiolen=(buf[5])|(buf[6]<<8);
stream_skip(demuxer->stream, videolen+audiolen-2);
stream_read(demuxer->stream,hdr,9);
if(hdr[0]==0x4E){
stream_read(demuxer->stream,buf,9);
if(buf[0]==0x4E){
mp_msg(MSGT_DEMUX,MSGL_DBG2,"demux_nsv: Got NSVs block.\n");
if(stream_eof(demuxer->stream)) return 0;
stream_skip(demuxer->stream,8);
stream_read(demuxer->stream,hdr,9);
stream_read(demuxer->stream,buf,9);
}
}
}