mpv/find_sub.c

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C
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//**************************************************************************//
// .SUB
//**************************************************************************//
#include "config.h"
#ifdef USE_OSD
#include <stdio.h>
#include "libvo/video_out.h"
#include "libvo/sub.h"
#include "subreader.h"
static int current_sub=0;
//static subtitle* subtitles=NULL;
static int nosub_range_start=-1;
static int nosub_range_end=-1;
extern float sub_delay;
extern float sub_fps;
void step_sub(subtitle *subtitles, float pts, int movement) {
int key = sub_uses_time ? (100*(pts+sub_delay)) : ((pts+sub_delay)*sub_fps);
if (subtitles == NULL)
return;
/* Tell the OSD subsystem that the OSD contents will change soon */
vo_osd_changed(OSDTYPE_SUBTITLE);
/* If we are moving forward, don't count the next (current) subtitle
* if we haven't displayed it yet. Same when moving other direction.
*/
if (movement > 0 && key < subtitles[current_sub].start)
movement--;
if (movement < 0 && key >= subtitles[current_sub].end)
movement++;
/* Never move beyond first or last subtitle. */
if (current_sub+movement < 0)
movement = 0-current_sub;
if (current_sub+movement >= sub_num)
movement = sub_num-current_sub-1;
current_sub += movement;
sub_delay = subtitles[current_sub].start/(sub_uses_time ? 100 : sub_fps) - pts;
}
void find_sub(subtitle* subtitles,int key){
int i,j;
if ( !subtitles ) return;
if(vo_sub){
if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
} else {
if(key>nosub_range_start && key<nosub_range_end) return; // OK!
}
// sub changed!
/* Tell the OSD subsystem that the OSD contents will change soon */
vo_osd_changed(OSDTYPE_SUBTITLE);
if(key<=0){
vo_sub=NULL; // no sub here
return;
}
// printf("\r---- sub changed ----\n");
// check next sub.
if(current_sub>=0 && current_sub+1<sub_num){
if(key>subtitles[current_sub].end && key<subtitles[current_sub+1].start){
// no sub
nosub_range_start=subtitles[current_sub].end;
nosub_range_end=subtitles[current_sub+1].start;
vo_sub=NULL;
return;
}
// next sub?
++current_sub;
vo_sub=&subtitles[current_sub];
if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
}
// printf("\r---- sub log search... ----\n");
// use logarithmic search:
i=0;j=sub_num-1;
// printf("Searching %d in %d..%d\n",key,subtitles[i].start,subtitles[j].end);
while(j>=i){
current_sub=(i+j+1)/2;
vo_sub=&subtitles[current_sub];
if(key<vo_sub->start) j=current_sub-1;
else if(key>vo_sub->end) i=current_sub+1;
else return; // found!
}
// if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
// check where are we...
if(key<vo_sub->start){
if(current_sub<=0){
// before the first sub
nosub_range_start=key-1; // tricky
nosub_range_end=vo_sub->start;
// printf("FIRST... key=%d end=%d \n",key,vo_sub->start);
vo_sub=NULL;
return;
}
--current_sub;
if(key>subtitles[current_sub].end && key<subtitles[current_sub+1].start){
// no sub
nosub_range_start=subtitles[current_sub].end;
nosub_range_end=subtitles[current_sub+1].start;
// printf("No sub... 1 \n");
vo_sub=NULL;
return;
}
printf("HEH???? ");
} else {
if(key<=vo_sub->end) printf("JAJJ! "); else
if(current_sub+1>=sub_num){
// at the end?
nosub_range_start=vo_sub->end;
nosub_range_end=0x7FFFFFFF; // MAXINT
// printf("END!?\n");
vo_sub=NULL;
return;
} else
if(key>subtitles[current_sub].end && key<subtitles[current_sub+1].start){
// no sub
nosub_range_start=subtitles[current_sub].end;
nosub_range_end=subtitles[current_sub+1].start;
// printf("No sub... 2 \n");
vo_sub=NULL;
return;
}
}
printf("SUB ERROR: %d ? %d --- %d [%d] \n",key,(int)vo_sub->start,(int)vo_sub->end,current_sub);
vo_sub=NULL; // no sub here
}
#endif