aboutsummaryrefslogtreecommitdiffhomepage
path: root/find_sub.c
blob: c5081a519db6aa726ddf2e6a18fdcbcc9f0508b5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
//**************************************************************************//
//             .SUB
//**************************************************************************//

#include "config.h"

#include <stdio.h>

#include "libvo/video_out.h"
#include "libvo/sub.h"
#include "subreader.h"

#include "mp_msg.h"
#include "help_mp.h"
#include "mpcommon.h"

static int current_sub=0;

//static subtitle* subtitles=NULL;
static int nosub_range_start=-1;
static int nosub_range_end=-1;
static const sub_data *last_sub_data = NULL;

extern float sub_delay;
extern float  sub_fps;

void step_sub(sub_data *subd, float pts, int movement) {
    subtitle *subs;
    int key;

    if (subd == NULL) return;
    subs = subd->subtitles;
    key = (pts+sub_delay) * (subd->sub_uses_time ? 100 : sub_fps);

    /* 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 < subs[current_sub].start)
    	movement--;
    if (movement < 0 && key >= subs[current_sub].end)
    	movement++;

    /* Never move beyond first or last subtitle. */
    if (current_sub+movement < 0)
    	movement = 0-current_sub;
    if (current_sub+movement >= subd->sub_num)
    	movement = subd->sub_num - current_sub - 1;

    current_sub += movement;
    sub_delay = subs[current_sub].start / (subd->sub_uses_time ? 100 : sub_fps) - pts;
}

void find_sub(sub_data* subd,int key){
    subtitle *subs;
    subtitle *new_sub = NULL;
    int i,j;

    if ( !subd || subd->sub_num == 0) return;
    subs = subd->subtitles;

    if (last_sub_data != subd) {
        // Sub data changed, reset nosub range.
        last_sub_data = subd;
        nosub_range_start = -1;
        nosub_range_end = -1;
    }

    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){
      // no sub here
      goto update;
    }

//    printf("\r---- sub changed ----\n");

    // check next sub.
    if(current_sub>=0 && current_sub+1 < subd->sub_num){
      if(key>subs[current_sub].end && key<subs[current_sub+1].start){
          // no sub
          nosub_range_start=subs[current_sub].end;
          nosub_range_end=subs[current_sub+1].start;
          goto update;
      }
      // next sub?
      ++current_sub;
      new_sub=&subs[current_sub];
      if(key>=new_sub->start && key<=new_sub->end) goto update; // OK!
    }

//    printf("\r---- sub log search... ----\n");

    // use logarithmic search:
    i=0;
    j = subd->sub_num - 1;
//    printf("Searching %d in %d..%d\n",key,subs[i].start,subs[j].end);
    while(j>=i){
        current_sub=(i+j+1)/2;
        new_sub=&subs[current_sub];
        if(key<new_sub->start) j=current_sub-1;
        else if(key>new_sub->end) i=current_sub+1;
        else goto update; // found!
    }
//    if(key>=new_sub->start && key<=new_sub->end) return; // OK!

    // check where are we...
    if(key<new_sub->start){
      if(current_sub<=0){
          // before the first sub
          nosub_range_start=key-1; // tricky
          nosub_range_end=new_sub->start;
//          printf("FIRST...  key=%d  end=%d  \n",key,new_sub->start);
          new_sub=NULL;
          goto update;
      }
      --current_sub;
      if(key>subs[current_sub].end && key<subs[current_sub+1].start){
          // no sub
          nosub_range_start=subs[current_sub].end;
          nosub_range_end=subs[current_sub+1].start;
//          printf("No sub... 1 \n");
          new_sub=NULL;
          goto update;
      }
      printf("HEH????  ");
    } else {
      if(key<=new_sub->end) printf("JAJJ!  "); else
      if(current_sub+1 >= subd->sub_num){
          // at the end?
          nosub_range_start=new_sub->end;
          nosub_range_end=0x7FFFFFFF; // MAXINT
//          printf("END!?\n");
          new_sub=NULL;
          goto update;
      } else
      if(key>subs[current_sub].end && key<subs[current_sub+1].start){
          // no sub
          nosub_range_start=subs[current_sub].end;
          nosub_range_end=subs[current_sub+1].start;
//          printf("No sub... 2 \n");
          new_sub=NULL;
          goto update;
      }
    }

    mp_msg(MSGT_FIXME,MSGL_FIXME,"SUB ERROR:  %d  ?  %d --- %d  [%d]  \n",key,(int)new_sub->start,(int)new_sub->end,current_sub);

    new_sub=NULL; // no sub here
update:
    set_osd_subtitle(new_sub);
}