avformat/utils: Move avpriv_new_chapter to demux_utils.c

It is demuxer-only: Muxers deal only with chapters given to them;
they don't create any of their own.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/libavformat/demux_utils.c b/libavformat/demux_utils.c
index 10ae887359..cfd6084d54 100644
--- a/libavformat/demux_utils.c
+++ b/libavformat/demux_utils.c
@@ -32,3 +32,44 @@ void avpriv_stream_set_need_parsing(AVStream *st, enum AVStreamParseType type)
 {
     ffstream(st)->need_parsing = type;
 }
+
+AVChapter *avpriv_new_chapter(AVFormatContext *s, int64_t id, AVRational time_base,
+                              int64_t start, int64_t end, const char *title)
+{
+    FFFormatContext *const si = ffformatcontext(s);
+    AVChapter *chapter = NULL;
+    int ret;
+
+    if (end != AV_NOPTS_VALUE && start > end) {
+        av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
+        return NULL;
+    }
+
+    if (!s->nb_chapters) {
+        si->chapter_ids_monotonic = 1;
+    } else if (!si->chapter_ids_monotonic || s->chapters[s->nb_chapters-1]->id >= id) {
+        for (unsigned i = 0; i < s->nb_chapters; i++)
+            if (s->chapters[i]->id == id)
+                chapter = s->chapters[i];
+        if (!chapter)
+            si->chapter_ids_monotonic = 0;
+    }
+
+    if (!chapter) {
+        chapter = av_mallocz(sizeof(*chapter));
+        if (!chapter)
+            return NULL;
+        ret = av_dynarray_add_nofree(&s->chapters, &s->nb_chapters, chapter);
+        if (ret < 0) {
+            av_free(chapter);
+            return NULL;
+        }
+    }
+    av_dict_set(&chapter->metadata, "title", title, 0);
+    chapter->id        = id;
+    chapter->time_base = time_base;
+    chapter->start     = start;
+    chapter->end       = end;
+
+    return chapter;
+}