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 #include "mp_msg.h"
  16 #include "help_mp.h"
  17
  18 static int current_sub=0;
  19
  20 //static subtitle* subtitles=NULL;
  21 static int nosub_range_start=-1;
  22 static int nosub_range_end=-1;
  23
  24 extern float sub_delay;
  25 extern float  sub_fps;
  26
  27 void step_sub(sub_data *subd, float pts, int movement) {
  28     subtitle *subs;
  29     int key;
  30
  31     if (subd == NULL) return;
  32     subs = subd->subtitles;
  33     key = (pts+sub_delay) * (subd->sub_uses_time ? 100 : sub_fps);
  34
  35     /* Tell the OSD subsystem that the OSD contents will change soon */
  36     vo_osd_changed(OSDTYPE_SUBTITLE);
  37
  38     /* If we are moving forward, don't count the next (current) subtitle
  39      * if we haven't displayed it yet. Same when moving other direction.
  40      */
  41     if (movement > 0 && key < subs[current_sub].start)
  42         movement--;
  43     if (movement < 0 && key >= subs[current_sub].end)
  44         movement++;
  45
  46     /* Never move beyond first or last subtitle. */
  47     if (current_sub+movement < 0)
  48         movement = 0-current_sub;
  49     if (current_sub+movement >= subd->sub_num)
  50         movement = subd->sub_num - current_sub - 1;
  51
  52     current_sub += movement;
  53     sub_delay = subs[current_sub].start / (subd->sub_uses_time ? 100 : sub_fps) - pts;
  54 }
  55
  56 void find_sub(sub_data* subd,int key){
  57     subtitle *subs;
  58     int i,j;
  59
  60     if ( !subd || subd->sub_num == 0) return;
  61     subs = subd->subtitles;
  62
  63     if(vo_sub){
  64       if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
  65     } else {
  66       if(key>nosub_range_start && key<nosub_range_end) return; // OK!
  67     }
  68     // sub changed!
  69
  70     /* Tell the OSD subsystem that the OSD contents will change soon */
  71     vo_osd_changed(OSDTYPE_SUBTITLE);
  72
  73     if(key<=0){
  74       vo_sub=NULL; // no sub here
  75       return;
  76     }
  77
  78 //    printf("\r---- sub changed ----\n");
  79
  80     // check next sub.
  81     if(current_sub>=0 && current_sub+1 < subd->sub_num){
  82       if(key>subs[current_sub].end && key<subs[current_sub+1].start){
  83           // no sub
  84           nosub_range_start=subs[current_sub].end;
  85           nosub_range_end=subs[current_sub+1].start;
  86           vo_sub=NULL;
  87           return;
  88       }
  89       // next sub?
  90       ++current_sub;
  91       vo_sub=&subs[current_sub];
  92       if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
  93     }
  94
  95 //    printf("\r---- sub log search... ----\n");
  96
  97     // use logarithmic search:
  98     i=0;
  99     j = subd->sub_num - 1;
 100 //    printf("Searching %d in %d..%d\n",key,subs[i].start,subs[j].end);
 101     while(j>=i){
 102         current_sub=(i+j+1)/2;
 103         vo_sub=&subs[current_sub];
 104         if(key<vo_sub->start) j=current_sub-1;
 105         else if(key>vo_sub->end) i=current_sub+1;
 106         else return; // found!
 107     }
 108 //    if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
 109
 110     // check where are we...
 111     if(key<vo_sub->start){
 112       if(current_sub<=0){
 113           // before the first sub
 114           nosub_range_start=key-1; // tricky
 115           nosub_range_end=vo_sub->start;
 116 //          printf("FIRST...  key=%d  end=%d  \n",key,vo_sub->start);
 117           vo_sub=NULL;
 118           return;
 119       }
 120       --current_sub;
 121       if(key>subs[current_sub].end && key<subs[current_sub+1].start){
 122           // no sub
 123           nosub_range_start=subs[current_sub].end;
 124           nosub_range_end=subs[current_sub+1].start;
 125 //          printf("No sub... 1 \n");
 126           vo_sub=NULL;
 127           return;
 128       }
 129       printf("HEH????  ");
 130     } else {
 131       if(key<=vo_sub->end) printf("JAJJ!  "); else
 132       if(current_sub+1 >= subd->sub_num){
 133           // at the end?
 134           nosub_range_start=vo_sub->end;
 135           nosub_range_end=0x7FFFFFFF; // MAXINT
 136 //          printf("END!?\n");
 137           vo_sub=NULL;
 138           return;
 139       } else
 140       if(key>subs[current_sub].end && key<subs[current_sub+1].start){
 141           // no sub
 142           nosub_range_start=subs[current_sub].end;
 143           nosub_range_end=subs[current_sub+1].start;
 144 //          printf("No sub... 2 \n");
 145           vo_sub=NULL;
 146           return;
 147       }
 148     }
 149
 150     mp_msg(MSGT_FIXME,MSGL_FIXME,"SUB ERROR:  %d  ?  %d --- %d  [%d]  \n",key,(int)vo_sub->start,(int)vo_sub->end,current_sub);
 151
 152     vo_sub=NULL; // no sub here
 153 }
 154
 155 #endif