ffmpeg: add libopus support

Signed-off-by: Ian Leonard <antonlacon@gmail.com>

multimedia/ffmpeg/Config.in

@@ -60,6 +60,7 @@ config FFMPEG_CUSTOM_AUDIO_DEC_SUPPORT
 	select FFMPEG_CUSTOM_DECODER_ape
 	select FFMPEG_CUSTOM_DECODER_atrac3
 	select FFMPEG_CUSTOM_DECODER_flac
+	select FFMPEG_CUSTOM_SELECT_libopus
 	select FFMPEG_CUSTOM_DECODER_mp2
 	select FFMPEG_CUSTOM_DECODER_mp3
 	select FFMPEG_CUSTOM_DECODER_mpc7
@@ -108,6 +109,9 @@ config FFMPEG_CUSTOM_AUDIO_DEC_SUPPORT
 
 comment "External Libraries ---"
 
+config FFMPEG_CUSTOM_SELECT_libopus
+	bool "Opus"
+
 config FFMPEG_CUSTOM_SELECT_speex
 	bool "Speex"
 

multimedia/ffmpeg/Makefile

@@ -289,7 +289,7 @@ endef
 define Package/libffmpeg-custom
 $(call Package/libffmpeg/Default)
  TITLE+= (custom)
- DEPENDS+= @DEVEL +libspeex
+ DEPENDS+= @DEVEL +libopus +libspeex
  VARIANT:=custom
  MENU:=1
 endef
@@ -308,7 +308,7 @@ endef
 define Package/libffmpeg-audio-dec
 $(call Package/libffmpeg/Default)
  TITLE+= (audio)
- DEPENDS+= @DEVEL +libspeex
+ DEPENDS+= @DEVEL +libopus +libspeex
  VARIANT:=audio-dec
 endef
 
@@ -428,6 +428,12 @@ ifeq ($(CONFIG_FFMPEG_CUSTOM_SELECT_adpcm),y)
 
 endif
 
+ifeq ($(CONFIG_FFMPEG_CUSTOM_SELECT_libopus),y)
+  FFMPEG_CONFIGURE+= \
+	--enable-libopus --enable-decoder=libopus \
+
+endif
+
 ifeq ($(CONFIG_FFMPEG_CUSTOM_SELECT_speex),y)
   FFMPEG_CONFIGURE+= \
 	--enable-libspeex --enable-decoder=libspeex \
@@ -454,6 +460,7 @@ ifeq ($(BUILD_VARIANT),audio-dec)
 	$(call FFMPEG_ENABLE,demuxer,$(FFMPEG_AUDIO_DEMUXERS)) \
 	$(call FFMPEG_ENABLE,parser,$(FFMPEG_AUDIO_PARSERS)) \
 	$(call FFMPEG_ENABLE,protocol,$(FFMPEG_AUDIO_PROTOCOLS)) \
+	--enable-libopus --enable-decoder=libopus \
 	--enable-libspeex --enable-decoder=libspeex \
 	--disable-decoder=pcm_bluray,pcm_dvd \