core: add a playlist demuxer

Modeled after the old playlist_parser.c, but actually new code, and it
works a bit differently.

Demuxers (and sometimes streams) are the component that should be used
to open files and to determine the file format. This was already done
for subtitles, but playlists still use a separate code path.

1 files changed, 3 insertions, 0 deletions

diff --git a/demux/demux.h b/demux/demux.h
index 06bf65809b..6976982e15 100644
--- a/demux/demux.h
+++ b/demux/demux.h
@@ -182,6 +182,9 @@ typedef struct demuxer {
     // for trivial demuxers which just read the whole file for codec to use
     struct bstr file_contents;
 
+    // If the file is a playlist file
+    struct playlist *playlist;
+
     void *priv;   // demuxer-specific internal data
     char **info;  // metadata
     struct MPOpts *opts;