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fixing demuxing of vc2_intro.avi

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Originally committed as revision 3610 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-10-19 10:37:02 +00:00
parent 7494cac0fd
commit 4a8d51356f
1 changed files with 8 additions and 9 deletions
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17
libavformat/avidec.c
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@ -383,18 +383,18 @@ static int avi_read_packet(AVFormatContext *s, AVPacket *pkt)
AVIContext *avi = s->priv_data;
ByteIOContext *pb = &s->pb;
int n, d[8], size;
offset_t i;
offset_t i, sync;
void* dstr;
memset(d, -1, sizeof(int)*8);
if (avi->dv_demux) {
size = dv_get_packet(avi->dv_demux, pkt);
if (size >= 0)
return size;
}
for(i=url_ftell(pb); !url_feof(pb); i++) {
resync:
memset(d, -1, sizeof(int)*8);
for(i=sync=url_ftell(pb); !url_feof(pb); i++) {
int j;
if (i >= avi->movi_end) {
@ -426,10 +426,8 @@ static int avi_read_packet(AVFormatContext *s, AVPacket *pkt)
//parse JUNK
||(d[0] == 'J' && d[1] == 'U' && d[2] == 'N' && d[3] == 'K')){
url_fskip(pb, size);
i+= size;
memset(d, -1, sizeof(int)*8);
//av_log(NULL, AV_LOG_DEBUG, "SKIP\n");
continue;
goto resync;
}
if( d[0] >= '0' && d[0] <= '9'
@ -446,7 +444,7 @@ static int avi_read_packet(AVFormatContext *s, AVPacket *pkt)
st = s->streams[n];
ast = st->priv_data;
if( (ast->prefix_count<5 && d[2]<128 && d[3]<128) ||
if( ((ast->prefix_count<5 || sync+9 > i) && d[2]<128 && d[3]<128) ||
d[2]*256+d[3] == ast->prefix /*||
(d[2] == 'd' && d[3] == 'c') ||
(d[2] == 'w' && d[3] == 'b')*/) {
@ -525,6 +523,7 @@ static int avi_read_packet(AVFormatContext *s, AVPacket *pkt)
st->codec.palctrl->palette[k] = b + (g << 8) + (r << 16);
}
st->codec.palctrl->palette_changed = 1;
goto resync;
}
}