demux: read cue sheets embedded in tags

This reads the "CUESHEET" tag, and attempts to parse it as .cue data. If
any is found, the cue tracks are added as chapters.

This reuses the parser written for demux_cue.c.

Fixes #1957.

1 files changed, 17 insertions, 2 deletions

diff --git a/demux/demux.c b/demux/demux.c
index bb367055cb..b99d0263c9 100644
--- a/demux/demux.c
+++ b/demux/demux.c
@@ -37,8 +37,7 @@
 #include "stream/stream.h"
 #include "demux.h"
 #include "stheader.h"
-
-#include "audio/format.h"
+#include "cue.h"
 
 // Demuxer list
 extern const struct demuxer_desc demuxer_desc_edl;
@@ -902,6 +901,21 @@ static void demux_init_cache(struct demuxer *demuxer)
     in->stream_base_filename = talloc_steal(demuxer, base);
 }
 
+static void demux_init_cuesheet(struct demuxer *demuxer)
+{
+    char *cue = mp_tags_get_str(demuxer->metadata, "cuesheet");
+    if (cue && !demuxer->num_chapters) {
+        struct cue_file *f = mp_parse_cue(bstr0(cue));
+        if (f) {
+            for (int n = 0; n < f->num_tracks; n++) {
+                struct cue_track *t = &f->tracks[n];
+                demuxer_add_chapter(demuxer, t->title, t->start, -1);
+            }
+        }
+        talloc_free(f);
+    }
+}
+
 static struct demuxer *open_given_type(struct mpv_global *global,
                                        struct mp_log *log,
                                        const struct demuxer_desc *desc,
@@ -977,6 +991,7 @@ static struct demuxer *open_given_type(struct mpv_global *global,
             in->d_thread->seekable = true;
             in->d_thread->partially_seekable = true;
         }
+        demux_init_cuesheet(in->d_thread);
         demux_init_cache(demuxer);
         demux_changed(in->d_thread, DEMUX_EVENT_ALL);
         demux_update(demuxer);