Remove optical disc fancification layers

This removes anything related to DVD/BD/CD that negatively affected the
core code. It includes trying to rewrite timestamps (since DVDs and
Blurays do not set packet stream timestamps to playback time, and can
even have resets mid-stream), export of chapters, stream languages,
export of title/track lists, and all that.

Only basic seeking is supported. It is very much possible that seeking
completely fails on some discs (on some parts of the timeline), because
timestamp rewriting was removed.

Note that I don't give a shit about optical media. If you want to watch
them, rip them. Keeping some bare support for DVD/BD is the most I'm
going to do to appease the type of lazy, obnoxious users who will care.
There are other players which are better at optical discs.

1 files changed, 15 insertions, 5 deletions

diff --git a/demux/demux_lavf.c b/demux/demux_lavf.c
index 8ec856d0c8..5d6c2725dc 100644
--- a/demux/demux_lavf.c
+++ b/demux/demux_lavf.c
@@ -213,6 +213,7 @@ typedef struct lavf_priv {
     int cur_program;
     char *mime_type;
     double seek_delay;
+    bool optical_crap_hack;
 
     struct demux_lavf_opts *opts;
     double mf_fps;
@@ -1056,6 +1057,13 @@ static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
                 "broken as well.\n");
     }
 
+    double len = -1;
+    if (stream_control(priv->stream, STREAM_CTRL_OPTICAL_CRAP_HACK1, &len) > 0) {
+        priv->optical_crap_hack = true;
+        demuxer->duration = len;
+        demuxer->seekable = true;
+    }
+
     return 0;
 }
 
@@ -1120,6 +1128,13 @@ static void demux_seek_lavf(demuxer_t *demuxer, double seek_pts, int flags)
     int avsflags = 0;
     int64_t seek_pts_av = 0;
 
+    if (priv->optical_crap_hack) {
+        if (flags & SEEK_FACTOR)
+            seek_pts = seek_pts * demuxer->duration;
+        stream_control(priv->stream, STREAM_CTRL_OPTICAL_CRAP_HACK2, &seek_pts);
+        return;
+    }
+
     if (!(flags & SEEK_FORWARD))
         avsflags = AVSEEK_FLAG_BACKWARD;
 
@@ -1234,11 +1249,6 @@ redo:
 
         return CONTROL_OK;
     }
-    case DEMUXER_CTRL_RESYNC:
-        stream_drop_buffers(priv->stream);
-        avio_flush(priv->avfc->pb);
-        avformat_flush(priv->avfc);
-        return CONTROL_OK;
     case DEMUXER_CTRL_REPLACE_STREAM:
         if (priv->own_stream)
             free_stream(priv->stream);