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Add demuxer functions for chapter feature. 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@25386 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
ulion 2007-12-13 12:51:05 +00:00
parent 66abcc42af
commit e34efdf167
2 changed files with 81 additions and 0 deletions
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71
libmpdemux/demuxer.c
View File

@ -1216,3 +1216,74 @@ int demuxer_seek_chapter(demuxer_t *demuxer, int chapter, int mode, float *seek_
return current;
}
}
int demuxer_get_current_chapter(demuxer_t *demuxer) {
int chapter = -1;
if (!demuxer->num_chapters || !demuxer->chapters) {
if (stream_control(demuxer->stream, STREAM_CTRL_GET_CURRENT_CHAPTER,
&chapter) == STREAM_UNSUPPORTED)
chapter = -1;
}
else {
sh_video_t *sh_video = demuxer->video->sh;
sh_audio_t *sh_audio = demuxer->audio->sh;
uint64_t now;
now = (sh_video ? sh_video->pts : (sh_audio?sh_audio->pts:0))*1000+0.5;
for (chapter = demuxer->num_chapters - 1; chapter >= 0; --chapter) {
if (demuxer->chapters[chapter].start <= now)
break;
}
}
return chapter;
}
char *demuxer_chapter_name(demuxer_t *demuxer, int chapter) {
if (demuxer->num_chapters && demuxer->chapters) {
if (chapter >=0 && chapter < demuxer->num_chapters &&
demuxer->chapters[chapter].name)
return strdup(demuxer->chapters[chapter].name);
}
return NULL;
}
char *demuxer_chapter_display_name(demuxer_t *demuxer, int chapter) {
char *chapter_name = demuxer_chapter_name(demuxer, chapter);
if (chapter_name) {
char *tmp = malloc(strlen(chapter_name) + 14);
snprintf(tmp, 63, "(%d) %s", chapter + 1, chapter_name);
free(chapter_name);
return tmp;
}
else {
int chapter_num = demuxer_chapter_count(demuxer);
char tmp[30];
if (chapter_num <= 0)
sprintf(tmp, "(%d)", chapter + 1);
else
sprintf(tmp, "(%d) of %d", chapter + 1, chapter_num);
return strdup(tmp);
}
}
float demuxer_chapter_time(demuxer_t *demuxer, int chapter, float *end) {
if (demuxer->num_chapters && demuxer->chapters && chapter >= 0
&& chapter < demuxer->num_chapters) {
if (end)
*end = demuxer->chapters[chapter].end / 1000.0;
return demuxer->chapters[chapter].start / 1000.0;
}
return -1.0;
}
int demuxer_chapter_count(demuxer_t *demuxer) {
if (!demuxer->num_chapters || !demuxer->chapters) {
int num_chapters = 0;
if (stream_control(demuxer->stream, STREAM_CTRL_GET_NUM_CHAPTERS,
&num_chapters) == STREAM_UNSUPPORTED)
num_chapters = 0;
return num_chapters;
}
else
return demuxer->num_chapters;
}

10
libmpdemux/demuxer.h
View File

@ -387,5 +387,15 @@ extern int get_demuxer_type_from_name(char *demuxer_name, int *force);
int demuxer_add_chapter(demuxer_t* demuxer, const char* name, uint64_t start, uint64_t end);
int demuxer_seek_chapter(demuxer_t *demuxer, int chapter, int mode, float *seek_pts, int *num_chapters, char **chapter_name);
/// Get current chapter index if available.
int demuxer_get_current_chapter(demuxer_t *demuxer);
/// Get chapter name by index if available.
char *demuxer_chapter_name(demuxer_t *demuxer, int chapter);
/// Get chapter display name by index.
char *demuxer_chapter_display_name(demuxer_t *demuxer, int chapter);
/// Get chapter start time and end time by index if available.
float demuxer_chapter_time(demuxer_t *demuxer, int chapter, float *end);
/// Get total chapter number.
int demuxer_chapter_count(demuxer_t *demuxer);
#endif /* DEMUXER_H */