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mov seeking implemented

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2228 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
arpi 2001-10-16 22:41:46 +00:00
parent d5ce7add8a
commit f17a194e38
2 changed files with 57 additions and 0 deletions
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53
demux_mov.c
View File

@ -107,6 +107,7 @@ void mov_build_index(mov_track_t* trak){
if(!trak->samples_size){
// constant sampesize
if(trak->durmap_size==1 || (trak->durmap_size==2 && trak->durmap[1].num==1)){
trak->duration=trak->durmap[0].dur;
} else printf("*** constant samplesize & variable duration not yet supported! ***\nContact the author if you have such sample file!\n");
return;
}
@ -558,3 +559,55 @@ if(trak->samplesize){
return 1;
}
static float mov_seek_track(mov_track_t* trak,float pts,int flags){
// printf("MOV track seek called %5.3f \n",pts);
if(flags&2) pts*=trak->length; else pts*=(float)trak->timescale;
if(trak->samplesize){
int sample=pts/trak->duration;
// printf("MOV track seek - chunk: %d (pts: %5.3f dur=%d) \n",sample,pts,trak->duration);
if(!(flags&1)) sample+=trak->chunks[trak->pos].sample; // relative
trak->pos=0;
while(trak->pos<trak->chunks_size && trak->chunks[trak->pos].sample<sample) ++trak->pos;
pts=(float)(trak->chunks[trak->pos].sample*trak->duration)/(float)trak->timescale;
} else {
unsigned int ipts=pts;
// printf("MOV track seek - sample: %d \n",ipts);
if(!(flags&1)) ipts+=trak->samples[trak->pos].pts;
trak->pos=0;
while(trak->pos<trak->samples_size && trak->samples[trak->pos].pts<ipts) ++trak->pos;
pts=(float)trak->samples[trak->pos].pts/(float)trak->timescale;
}
// printf("MOV track seek done: %5.3f \n",pts);
return pts;
}
void demux_seek_mov(demuxer_t *demuxer,float pts,int flags){
mov_priv_t* priv=demuxer->priv;
demux_stream_t* ds;
// printf("MOV seek called %5.3f flag=%d \n",pts,flags);
ds=demuxer->video;
if(ds && ds->id>=0 && ds->id<priv->track_db){
mov_track_t* trak=priv->tracks[ds->id];
//if(flags&2) pts*=(float)trak->length/(float)trak->timescale;
//if(!(flags&1)) pts+=ds->pts;
pts=ds->pts=mov_seek_track(trak,pts,flags);
flags=1; // absolute seconds
}
ds=demuxer->audio;
if(ds && ds->id>=0 && ds->id<priv->track_db){
mov_track_t* trak=priv->tracks[ds->id];
//if(flags&2) pts*=(float)trak->length/(float)trak->timescale;
//if(!(flags&1)) pts+=ds->pts;
ds->pts=mov_seek_track(trak,pts,flags);
}
}

4
demuxer.c
View File

@ -532,6 +532,7 @@ return demuxer;
int demux_seek_avi(demuxer_t *demuxer,float rel_seek_secs,int flags);
int demux_seek_asf(demuxer_t *demuxer,float rel_seek_secs,int flags);
int demux_seek_mpg(demuxer_t *demuxer,float rel_seek_secs,int flags);
void demux_seek_mov(demuxer_t *demuxer,float pts,int flags);
int demux_seek(demuxer_t *demuxer,float rel_seek_secs,int flags){
demux_stream_t *d_audio=demuxer->audio;
@ -568,6 +569,9 @@ switch(demuxer->file_format){
case DEMUXER_TYPE_MPEG_PS:
demux_seek_mpg(demuxer,rel_seek_secs,flags); break;
case DEMUXER_TYPE_MOV:
demux_seek_mov(demuxer,rel_seek_secs,flags); break;
} // switch(demuxer->file_format)
return 1;