demux_lavf: make minimum probe score customizable, remove lavf_preferred

libavformat wants to read a full ~400KB of data to determine whether
it's really AAC. This causes slow startup with AAC web radio streams [1]
(possible due to a broken initial packet). There are similar issues
with other file formats.

Make the probe "score" (libavformat's mechanism for testing file
formats) configurable with the -lavfdtops:probescore option. This allows
lowering the amount of data read on probing. If the probe score is below
the probescore option value, demux_lavf will try to get a higher score
by feeding more data to libavformat, until the required score or the
max. probe size is reached.

Remove the lavf_preferred demuxer entry. This had a purpose in
mplayer-svn, but now there doesn't seem to be any good reason for it
to exist. Make sure that our native "good" demuxers are above
demux_lavf in demuxer_list[] instead (so that they are preferred).

[1] http://lr2mp0.latvijasradio.lv:8000

1 files changed, 1 insertions, 0 deletions

diff --git a/core/options.h b/core/options.h
index 2847637bcc..f6e2a169f0 100644
--- a/core/options.h
+++ b/core/options.h
@@ -150,6 +150,7 @@ typedef struct MPOpts {
 
     struct lavfdopts {
         unsigned int probesize;
+        int probescore;
         unsigned int analyzeduration;
         char *format;
         char *cryptokey;