player: warn against using HLS URLs with --playlist

That just makes no sense, but seems to be a somewhat common user error.

The detection is not perfect. It's conceivable that EXT-X-... headers
are used in normal m3u playlists. After all, HLS playlists are by
definition a compatible extension to m3u playlists, as stupid as it
sounds.

2 files changed, 8 insertions, 1 deletions

diff --git a/common/playlist.c b/common/playlist.c
index df3b65fbbc..9fd087be67 100644
--- a/common/playlist.c
+++ b/common/playlist.c
@@ -281,6 +281,10 @@ struct playlist *playlist_parse_file(const char *file, struct mpv_global *global
     if (d && d->playlist) {
         ret = talloc_zero(NULL, struct playlist);
         playlist_transfer_entries(ret, d->playlist);
+        if (d->filetype && strcmp(d->filetype, "hls") == 0) {
+            mp_warn(log, "This might be a HLS stream. For correct operation, "
+                         "pass it to the player\ndirectly. Don't use --playlist.\n");
+        }
     }
     free_demuxer_and_stream(d);
 
diff --git a/demux/demux_playlist.c b/demux/demux_playlist.c
index ff252bb417..25ad22bddb 100644
--- a/demux/demux_playlist.c
+++ b/demux/demux_playlist.c
@@ -54,6 +54,7 @@ struct pl_parser {
     bool add_base;
     enum demux_check check_level;
     struct stream *real_stream;
+    char *format;
 };
 
 static char *pl_get_line0(struct pl_parser *p)
@@ -120,6 +121,8 @@ ok:
                 talloc_free(title);
                 title = bstrto0(NULL, btitle);
             }
+        } else if (bstr_startswith0(line, "#EXT-X-")) {
+            p->format = "hls";
         } else if (line.len > 0 && !bstr_startswith0(line, "#")) {
             char *fn = bstrto0(NULL, line);
             struct playlist_entry *e = playlist_entry_new(fn);
@@ -338,7 +341,7 @@ static int open_file(struct demuxer *demuxer, enum demux_check check)
     if (p->add_base)
         playlist_add_base_path(p->pl, mp_dirname(demuxer->filename));
     demuxer->playlist = talloc_steal(demuxer, p->pl);
-    demuxer->filetype = fmt->name;
+    demuxer->filetype = p->format ? p->format : fmt->name;
     demuxer->fully_read = true;
     talloc_free(p);
     return ok ? 0 : -1;