har0ke/FFmpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

dynamic index building so forward and backward seeking in avi without an index is possible

Browse Source 
Originally committed as revision 7842 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-02-05 23:06:08 +00:00
parent e9b78eeba2
commit ded3c7da61
1 changed files with 8 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
libavformat/avidec.c
View File

@ -626,9 +626,9 @@ resync:
pkt->stream_index = avi->stream_index;
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
if(st->index_entries){
AVIndexEntry *e;
int index;
assert(st->index_entries);
index= av_index_search_timestamp(st, pkt->dts, 0);
e= &st->index_entries[index];
@ -637,11 +637,6 @@ resync:
if (e->flags & AVINDEX_KEYFRAME)
pkt->flags |= PKT_FLAG_KEY;
}
} else {
/* if no index, better to say that all frames
are key frames */
pkt->flags |= PKT_FLAG_KEY;
}
} else {
pkt->flags |= PKT_FLAG_KEY;
}
@ -735,6 +730,13 @@ resync:
avi->stream_index= n;
ast->packet_size= size + 8;
ast->remaining= size;
{
uint64_t pos= url_ftell(pb) - 8;
if(!st->index_entries || !st->nb_index_entries || st->index_entries[st->nb_index_entries - 1].pos < pos){
av_add_index_entry(st, pos, ast->frame_offset / FFMAX(1, ast->sample_size), size, 0, AVINDEX_KEYFRAME);
}
}
goto resync;
}
}