Add Opus FourCC

(cherry picked from commit 3f17ad71)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

include/vlc_fourcc.h

@@ -246,6 +246,7 @@
 #define VLC_CODEC_TRUEHD    VLC_FOURCC('t','r','h','d')
 #define VLC_CODEC_DVAUDIO   VLC_FOURCC('d','v','a','u')
 #define VLC_CODEC_SPEEX     VLC_FOURCC('s','p','x',' ')
+#define VLC_CODEC_OPUS      VLC_FOURCC('O','p','u','s')
 #define VLC_CODEC_VORBIS    VLC_FOURCC('v','o','r','b')
 #define VLC_CODEC_MACE3     VLC_FOURCC('M','A','C','3')
 #define VLC_CODEC_MACE6     VLC_FOURCC('M','A','C','6')

src/misc/fourcc.c

@@ -1151,6 +1151,9 @@ static const entry_t p_list_audio[] = {
     B(VLC_CODEC_VORBIS, "Vorbis Audio"),
         A("vorb"),
 
+    B(VLC_CODEC_OPUS, "Opus Audio"),
+        A("Opus"),
+
     B(VLC_CODEC_302M, "302M Audio"),
         A("302m"),