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seeking with index

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Originally committed as revision 7057 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2006-11-14 13:32:14 +00:00
parent 4d5be986f0
commit 071790c876
1 changed files with 14 additions and 15 deletions
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29
libavformat/nutdec.c
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@ -633,7 +633,7 @@ static int nut_read_header(AVFormatContext *s, AVFormatParameters *ap)
s->data_offset= pos-8;
if(0 &&!url_is_streamed(bc)){
if(!url_is_streamed(bc)){
int64_t orig_pos= url_ftell(bc);
find_and_decode_index(nut);
url_fseek(bc, orig_pos, SEEK_SET);
@ -694,16 +694,6 @@ static int decode_frame_header(NUTContext *nut, int *flags_ret, int64_t *pts, in
stc->last_pts= *pts;
stc->last_key_frame= flags&FLAG_KEY; //FIXME change to last flags
if(flags&FLAG_KEY){
av_add_index_entry(
s->streams[*stream_id],
nut->last_syncpoint_pos,
*pts,
0,
0,
AVINDEX_KEYFRAME);
}
return size;
}
@ -846,6 +836,14 @@ static int read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flag
syncpoint_t *sp, *next_node[2]= {&nopts_sp, &nopts_sp};
int64_t pos, pos2, ts;
if(st->index_entries){
int index= av_index_search_timestamp(st, pts, flags);
if(index<0)
return -1;
pos2= st->index_entries[index].pos;
ts = st->index_entries[index].timestamp;
}else{
av_tree_find(nut->syncpoints, &dummy, sp_pts_cmp, next_node);
av_log(s, AV_LOG_DEBUG, "%Ld-%Ld %Ld-%Ld\n", next_node[0]->pos, next_node[1]->pos,
next_node[0]->ts , next_node[1]->ts);
@ -866,12 +864,13 @@ static int read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flag
sp= av_tree_find(nut->syncpoints, &dummy, sp_pos_cmp, NULL);
assert(sp);
av_log(NULL, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", sp->back_ptr);
pos= find_startcode(&s->pb, SYNCPOINT_STARTCODE, sp->back_ptr - 15);
pos2= sp->back_ptr - 15;
}
av_log(NULL, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos2);
pos= find_startcode(&s->pb, SYNCPOINT_STARTCODE, pos2);
url_fseek(&s->pb, pos, SEEK_SET);
av_log(NULL, AV_LOG_DEBUG, "SP: %"PRId64"\n", pos);
if(sp->back_ptr - 15 > pos || sp->back_ptr < pos){
if(pos2 > pos || pos2 + 15 < pos){
av_log(NULL, AV_LOG_ERROR, "no syncpoint at backptr pos\n");
}
return 0;