mplayer: fix looping of very short files

Commit 884c179 attempted to make it possible to skip backwards through
the playlist, even for files which fail to intitialize, or play for a
very short time. This was also used to prevent mpv from looping forever
and doing nothing if --loop=inf is used, and no file in the playlist is
playable.

This broke looping of very short files, because mpv was assuming that
this case happened. But there are legitimate use cases.

Fix this by making the looping case special. Instead of checking whether
playback was "very short", check whether something could be decoded and
displayed/played. If yes, allow looping.

1 files changed, 2 insertions, 0 deletions

diff --git a/mpvcore/mp_core.h b/mpvcore/mp_core.h
index e15ec0355e..28f34ee580 100644
--- a/mpvcore/mp_core.h
+++ b/mpvcore/mp_core.h
@@ -148,6 +148,8 @@ typedef struct MPContext {
     bool has_quit_custom_rc;
     bool error_playing;
 
+    int64_t shown_vframes, shown_aframes;
+
     struct demuxer **sources;
     int num_sources;