find_sub.c

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