Added .thd extension and force TrueHD decoder in raw MLP/TrueHD demuxer.

Cherry-picked manually by jb@videolan.org

modules/demux/mpeg/es.c

@@ -66,6 +66,7 @@ vlc_module_begin ()
     add_shortcut( "dts" )
 
     add_shortcut( "mlp" )
+    add_shortcut( "thd" )
 vlc_module_end ()
 
 /*****************************************************************************
@@ -139,6 +140,7 @@ static const codec_t p_codec[] = {
     { VLC_FOURCC( 'e', 'a', 'c', '3' ), true,  "eac3 audio", EA52Probe, A52Init },
     { VLC_FOURCC( 'd', 't', 's', ' ' ), false, "dts audio",  DtsProbe,  DtsInit },
     { VLC_FOURCC( 'm', 'l', 'p', ' ' ), false, "mlp audio",  MlpProbe,  MlpInit },
+    { VLC_FOURCC( 't', 'r', 'h', 'd' ), false, "mlp audio",  MlpProbe,  MlpInit },
 
     { 0, false, NULL, NULL, NULL }
 };
@@ -835,7 +837,7 @@ static int MlpCheckSync( const uint8_t *p_peek )
 }
 static int MlpProbe( demux_t *p_demux, int64_t *pi_offset )
 {
-    const char *ppsz_name[] = { "mlp", NULL };
+    const char *ppsz_name[] = { "mlp", "thd", NULL };
 
     return GenericProbe( p_demux, pi_offset, ppsz_name, MlpCheckSync, 4+28+16*4 );
 }