[FFmpeg] support for native RV40

(cherry picked from commit 07dc019f)

Conflicts:

	modules/codec/avcodec/fourcc.h

modules/codec/avcodec/fourcc.h

@@ -543,20 +543,27 @@ static const struct
 
     /* Real Video */
     { VLC_FOURCC('R','V','1','0'), CODEC_ID_RV10,
-      VIDEO_ES, "Real Video 10" },
+      VIDEO_ES, "Real Video 1.0" },
     { VLC_FOURCC('r','v','1','0'), CODEC_ID_RV10,
-      VIDEO_ES, "Real Video 10" },
+      VIDEO_ES, "Real Video 1.0" },
     { VLC_FOURCC('R','V','1','3'), CODEC_ID_RV10,
-      VIDEO_ES, "Real Video 13" },
+      VIDEO_ES, "Real Video 1.3" },
     { VLC_FOURCC('r','v','1','3'), CODEC_ID_RV10,
       VIDEO_ES, "Real Video 13" },
 #if LIBAVCODEC_VERSION_INT >= ((51<<16)+(15<<8)+1)
     { VLC_FOURCC('R','V','2','0'), CODEC_ID_RV20,
-      VIDEO_ES, "Real Video 20" },
+      VIDEO_ES, "Real Video 2.0" },
     { VLC_FOURCC('r','v','2','0'), CODEC_ID_RV20,
-      VIDEO_ES, "Real Video 20" },
+      VIDEO_ES, "Real Video 2.0" },
+#endif
+#if LIBAVCODEC_VERSION_INT >= ((52<<16)+(5<<8)+0)
+    { VLC_FOURCC('R','V','4','0'), CODEC_ID_RV40,
+      VIDEO_ES, "Real Video 4.0" },
+    { VLC_FOURCC('r','v','4','0'), CODEC_ID_RV40,
+      VIDEO_ES, "Real Video 4.0" },
 #endif
 
+
     /* Apple Video */
     { VLC_FOURCC('r','p','z','a'), CODEC_ID_RPZA,
       VIDEO_ES, "Apple Video" },