find_sub.c

   1 //**************************************************************************//
   2 //             .SUB
   3 //**************************************************************************//
   4
   5 #include "config.h"
   6
   7 #ifdef USE_OSD
   8
   9 #include <stdio.h>
  10
  11 #include "libvo/video_out.h"
  12 #include "libvo/sub.h"
  13 #include "subreader.h"
  14
  15 static int current_sub=0;
  16
  17 //static subtitle* subtitles=NULL;
  18 static int nosub_range_start=-1;
  19 static int nosub_range_end=-1;
  20
  21 extern float sub_delay;
  22 extern float  sub_fps;
  23
  24 void step_sub(sub_data *subd, float pts, int movement) {
  25     subtitle *subs;
  26     int key;
  27
  28     if (subd == NULL) return;
  29     subs = subd->subtitles;
  30     key = (pts+sub_delay) * (subd->sub_uses_time ? 100 : sub_fps);
  31
  32     /* Tell the OSD subsystem that the OSD contents will change soon */
  33     vo_osd_changed(OSDTYPE_SUBTITLE);
  34
  35     /* If we are moving forward, don't count the next (current) subtitle
  36      * if we haven't displayed it yet. Same when moving other direction.
  37      */
  38     if (movement > 0 && key < subs[current_sub].start)
  39         movement--;
  40     if (movement < 0 && key >= subs[current_sub].end)
  41         movement++;
  42
  43     /* Never move beyond first or last subtitle. */
  44     if (current_sub+movement < 0)
  45         movement = 0-current_sub;
  46     if (current_sub+movement >= subd->sub_num)
  47         movement = subd->sub_num - current_sub - 1;
  48
  49     current_sub += movement;
  50     sub_delay = subs[current_sub].start / (subd->sub_uses_time ? 100 : sub_fps) - pts;
  51 }
  52
  53 void find_sub(sub_data* subd,int key){
  54     subtitle *subs;
  55     int i,j;
  56
  57     if ( !subd || subd->sub_num == 0) return;
  58     subs = subd->subtitles;
  59
  60     if(vo_sub){
  61       if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
  62     } else {
  63       if(key>nosub_range_start && key<nosub_range_end) return; // OK!
  64     }
  65     // sub changed!
  66
  67     /* Tell the OSD subsystem that the OSD contents will change soon */
  68     vo_osd_changed(OSDTYPE_SUBTITLE);
  69
  70     if(key<=0){
  71       vo_sub=NULL; // no sub here
  72       return;
  73     }
  74
  75 //    printf("\r---- sub changed ----\n");
  76
  77     // check next sub.
  78     if(current_sub>=0 && current_sub+1 < subd->sub_num){
  79       if(key>subs[current_sub].end && key<subs[current_sub+1].start){
  80           // no sub
  81           nosub_range_start=subs[current_sub].end;
  82           nosub_range_end=subs[current_sub+1].start;
  83           vo_sub=NULL;
  84           return;
  85       }
  86       // next sub?
  87       ++current_sub;
  88       vo_sub=&subs[current_sub];
  89       if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
  90     }
  91
  92 //    printf("\r---- sub log search... ----\n");
  93
  94     // use logarithmic search:
  95     i=0;
  96     j = subd->sub_num - 1;
  97 //    printf("Searching %d in %d..%d\n",key,subs[i].start,subs[j].end);
  98     while(j>=i){
  99         current_sub=(i+j+1)/2;
 100         vo_sub=&subs[current_sub];
 101         if(key<vo_sub->start) j=current_sub-1;
 102         else if(key>vo_sub->end) i=current_sub+1;
 103         else return; // found!
 104     }
 105 //    if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
 106
 107     // check where are we...
 108     if(key<vo_sub->start){
 109       if(current_sub<=0){
 110           // before the first sub
 111           nosub_range_start=key-1; // tricky
 112           nosub_range_end=vo_sub->start;
 113 //          printf("FIRST...  key=%d  end=%d  \n",key,vo_sub->start);
 114           vo_sub=NULL;
 115           return;
 116       }
 117       --current_sub;
 118       if(key>subs[current_sub].end && key<subs[current_sub+1].start){
 119           // no sub
 120           nosub_range_start=subs[current_sub].end;
 121           nosub_range_end=subs[current_sub+1].start;
 122 //          printf("No sub... 1 \n");
 123           vo_sub=NULL;
 124           return;
 125       }
 126       printf("HEH????  ");
 127     } else {
 128       if(key<=vo_sub->end) printf("JAJJ!  "); else
 129       if(current_sub+1 >= subd->sub_num){
 130           // at the end?
 131           nosub_range_start=vo_sub->end;
 132           nosub_range_end=0x7FFFFFFF; // MAXINT
 133 //          printf("END!?\n");
 134           vo_sub=NULL;
 135           return;
 136       } else
 137       if(key>subs[current_sub].end && key<subs[current_sub+1].start){
 138           // no sub
 139           nosub_range_start=subs[current_sub].end;
 140           nosub_range_end=subs[current_sub+1].start;
 141 //          printf("No sub... 2 \n");
 142           vo_sub=NULL;
 143           return;
 144       }
 145     }
 146
 147     printf("SUB ERROR:  %d  ?  %d --- %d  [%d]  \n",key,(int)vo_sub->start,(int)vo_sub->end,current_sub);
 148
 149     vo_sub=NULL; // no sub here
 150 }
 151
 152 #endif