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 static const sub_data *last_sub_data = NULL;
  22
  23 extern float sub_delay;
  24 extern float  sub_fps;
  25
  26 void step_sub(sub_data *subd, float pts, int movement) {
  27     subtitle *subs;
  28     int key;
  29
  30     if (subd == NULL) return;
  31     subs = subd->subtitles;
  32     key = (pts+sub_delay) * (subd->sub_uses_time ? 100 : sub_fps);
  33
  34     /* Tell the OSD subsystem that the OSD contents will change soon */
  35     vo_osd_changed(OSDTYPE_SUBTITLE);
  36
  37     /* If we are moving forward, don't count the next (current) subtitle
  38      * if we haven't displayed it yet. Same when moving other direction.
  39      */
  40     if (movement > 0 && key < subs[current_sub].start)
  41         movement--;
  42     if (movement < 0 && key >= subs[current_sub].end)
  43         movement++;
  44
  45     /* Never move beyond first or last subtitle. */
  46     if (current_sub+movement < 0)
  47         movement = 0-current_sub;
  48     if (current_sub+movement >= subd->sub_num)
  49         movement = subd->sub_num - current_sub - 1;
  50
  51     current_sub += movement;
  52     sub_delay = subs[current_sub].start / (subd->sub_uses_time ? 100 : sub_fps) - pts;
  53 }
  54
  55 void find_sub(sub_data* subd,int key){
  56     subtitle *subs;
  57     int i,j;
  58
  59     if ( !subd || subd->sub_num == 0) return;
  60     subs = subd->subtitles;
  61
  62     if (last_sub_data != subd) {
  63         // Sub data changed, reset nosub range.
  64         last_sub_data = subd;
  65         nosub_range_start = -1;
  66         nosub_range_end = -1;
  67     }
  68
  69     if(vo_sub){
  70       if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
  71     } else {
  72       if(key>nosub_range_start && key<nosub_range_end) return; // OK!
  73     }
  74     // sub changed!
  75
  76     /* Tell the OSD subsystem that the OSD contents will change soon */
  77     vo_osd_changed(OSDTYPE_SUBTITLE);
  78
  79     if(key<=0){
  80       vo_sub=NULL; // no sub here
  81       return;
  82     }
  83
  84 //    printf("\r---- sub changed ----\n");
  85
  86     // check next sub.
  87     if(current_sub>=0 && current_sub+1 < subd->sub_num){
  88       if(key>subs[current_sub].end && key<subs[current_sub+1].start){
  89           // no sub
  90           nosub_range_start=subs[current_sub].end;
  91           nosub_range_end=subs[current_sub+1].start;
  92           vo_sub=NULL;
  93           return;
  94       }
  95       // next sub?
  96       ++current_sub;
  97       vo_sub=&subs[current_sub];
  98       if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
  99     }
 100
 101 //    printf("\r---- sub log search... ----\n");
 102
 103     // use logarithmic search:
 104     i=0;
 105     j = subd->sub_num - 1;
 106 //    printf("Searching %d in %d..%d\n",key,subs[i].start,subs[j].end);
 107     while(j>=i){
 108         current_sub=(i+j+1)/2;
 109         vo_sub=&subs[current_sub];
 110         if(key<vo_sub->start) j=current_sub-1;
 111         else if(key>vo_sub->end) i=current_sub+1;
 112         else return; // found!
 113     }
 114 //    if(key>=vo_sub->start && key<=vo_sub->end) return; // OK!
 115
 116     // check where are we...
 117     if(key<vo_sub->start){
 118       if(current_sub<=0){
 119           // before the first sub
 120           nosub_range_start=key-1; // tricky
 121           nosub_range_end=vo_sub->start;
 122 //          printf("FIRST...  key=%d  end=%d  \n",key,vo_sub->start);
 123           vo_sub=NULL;
 124           return;
 125       }
 126       --current_sub;
 127       if(key>subs[current_sub].end && key<subs[current_sub+1].start){
 128           // no sub
 129           nosub_range_start=subs[current_sub].end;
 130           nosub_range_end=subs[current_sub+1].start;
 131 //          printf("No sub... 1 \n");
 132           vo_sub=NULL;
 133           return;
 134       }
 135       printf("HEH????  ");
 136     } else {
 137       if(key<=vo_sub->end) printf("JAJJ!  "); else
 138       if(current_sub+1 >= subd->sub_num){
 139           // at the end?
 140           nosub_range_start=vo_sub->end;
 141           nosub_range_end=0x7FFFFFFF; // MAXINT
 142 //          printf("END!?\n");
 143           vo_sub=NULL;
 144           return;
 145       } else
 146       if(key>subs[current_sub].end && key<subs[current_sub+1].start){
 147           // no sub
 148           nosub_range_start=subs[current_sub].end;
 149           nosub_range_end=subs[current_sub+1].start;
 150 //          printf("No sub... 2 \n");
 151           vo_sub=NULL;
 152           return;
 153       }
 154     }
 155
 156     mp_msg(MSGT_FIXME,MSGL_FIXME,"SUB ERROR:  %d  ?  %d --- %d  [%d]  \n",key,(int)vo_sub->start,(int)vo_sub->end,current_sub);
 157
 158     vo_sub=NULL; // no sub here
 159 }