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https://github.com/mpv-player/mpv
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This patch is to add support for overlapping subtitles, that is
subtitles whose start or end happens during another subtitle. After reading the subtitles from the file in sub_read_file(), this patch looks for overlapping subtitles and split them into more non-overlapping subtitles. Salvatore Falco <sfalco@studenti.ing.uniroma1.it> git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7984 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
arpi
parent
b364822847
commit
d200725e88
108
subreader.c
108
subreader.c
@ -920,7 +920,7 @@ subtitle* subcp_recode (subtitle *sub)
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#endif
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static void adjust_subs_time(subtitle* sub, float subtime, float fps){
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static void adjust_subs_time(subtitle* sub, float subtime, float fps, int block){
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int n,m;
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subtitle* nextsub;
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int i = sub_num;
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@ -928,6 +928,7 @@ static void adjust_subs_time(subtitle* sub, float subtime, float fps){
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n=m=0;
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if (i) for (;;){
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if (!block)
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if (sub->end <= sub->start){
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sub->end = sub->start + subfms;
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m++;
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@ -935,6 +936,7 @@ static void adjust_subs_time(subtitle* sub, float subtime, float fps){
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}
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if (!--i) break;
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nextsub = sub + 1;
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if (block){
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if (sub->end >= nextsub->start){
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sub->end = nextsub->start - 1;
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if (sub->end - sub->start > subfms)
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@ -957,6 +959,7 @@ static void adjust_subs_time(subtitle* sub, float subtime, float fps){
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sub->start *= sub_fps/fps;
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sub->end *= sub_fps/fps;
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}
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}
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sub = nextsub;
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m = 0;
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@ -966,8 +969,8 @@ static void adjust_subs_time(subtitle* sub, float subtime, float fps){
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subtitle* sub_read_file (char *filename, float fps) {
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FILE *fd;
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int n_max;
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subtitle *first;
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int n_max, n_first, i, j, sub_first, sub_orig;
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subtitle *first, *second;
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char *fmtname[] = { "microdvd", "subrip", "subviewer", "sami", "vplayer",
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"rt", "ssa", "dunnowhat", "mpsub", "aqt", "subviewer 2.0", "subrip 0.9", "jacosub" };
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subtitle * (*func[])(FILE *fd,subtitle *dest)=
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@ -1036,8 +1039,103 @@ subtitle* sub_read_file (char *filename, float fps) {
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return NULL;
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}
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adjust_subs_time(first, 6.0, fps); /* ~6 secs AST */
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return first;
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adjust_subs_time(first, 6.0, fps, 0); /* ~6 secs AST */
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// here we manage overlapping subtitles
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sub_orig = sub_num;
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n_first = sub_num;
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n_max = 0;
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sub_num = 0;
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second = NULL;
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// for each subtitle in first[]
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for (sub_first = 0; sub_first < n_first; ++sub_first) {
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while (first[sub_first].start <= first[sub_first].end) {
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unsigned long end_time = first[sub_first].end;
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int lines_to_add = 0, sub_to_add, event, ls, lf;
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// there is a new subtitle, so let's make second[] bigger
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n_max += 1;
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second = realloc(second, n_max * sizeof(subtitle));
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memset(&second[n_max - 1], '\0', sizeof(subtitle));
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// find the number of lines and subtitles that overlap the current subtitle
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for (sub_to_add = 0;
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(end_time > first[sub_first + sub_to_add + 1].start)
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&& (sub_first + sub_to_add + 1 < n_first); ++sub_to_add) {
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lines_to_add += first[sub_first + sub_to_add + 1].lines;
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}
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if ((lines_to_add > 0)
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&& (first[sub_first].lines + lines_to_add <
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SUB_MAX_TEXT)) {
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unsigned long next;
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// find next beginning-of-a-subtitle time
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next = first[sub_first].end + 1;
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event = sub_first;
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for (j = 0; j < lines_to_add; j++) {
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if ((first[sub_first + j + 1].end + 1 < next)
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&& (first[sub_first + j + 1].end >=
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first[sub_first].start)) {
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event = sub_first + j + 1;
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next = first[event].end + 1;
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}
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if ((first[sub_first + j + 1].start < next)
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&& (first[sub_first + j + 1].start >
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first[sub_first].start)) {
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event = sub_first + j + 1;
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next = first[event].start;
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}
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}
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second[sub_num].start = first[sub_first].start;
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second[sub_num].end = next - 1;
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second[sub_num].lines = first[sub_first].lines;
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for (ls = 0, lf = 0; ls < second[sub_num].lines; ls++, lf++) {
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second[sub_num].text[ls] =
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strdup(first[sub_first].text[lf]);
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}
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for (j = 0; j < sub_to_add; j++) {
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if ((first[sub_first + j + 1].start <=
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second[sub_num].start)
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&& (first[sub_first + j + 1].end >=
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second[sub_num].end)
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&& (second[sub_num].lines +
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first[sub_first + j + 1].lines <=
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SUB_MAX_TEXT)) {
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for (lf = 0; lf < first[sub_first + j + 1].lines;
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lf++, ls++)
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second[sub_num].text[ls] =
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strdup(first[sub_first + j + 1].text[lf]);
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first[sub_first + j + 1].start = next;
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} else
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for (lf = 0; lf < first[sub_first + j + 1].lines;
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lf++, ls++)
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second[sub_num].text[ls] = strdup(" ");
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second[sub_num].lines +=
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first[sub_first + j + 1].lines;
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}
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first[sub_first].start = next;
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} else {
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second[sub_num].start = first[sub_first].start;
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second[sub_num].end = first[sub_first].end;
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second[sub_num].lines = first[sub_first].lines;
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for (ls = 0; ls < second[sub_num].lines; ls++)
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second[sub_num].text[ls] =
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strdup(first[sub_first].text[ls]);
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first[sub_first].start = first[sub_first].end + 1;
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}
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++sub_num;
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} // while
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}
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adjust_subs_time(second, 6.0, fps, 1); /* ~6 secs AST */
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for (j = sub_orig - 1; j <= 0; --j) {
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for (i = first[j].lines - 1; i <= 0; --i) {
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free(first[j].text[i]);
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}
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free(&first[j]);
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}
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return second;
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}
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#if 0
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