contrib: enable audio decoders

Allows different ringtones to be used to compensate for sndfile no
longer being used to decode them.

Also prepares for eventual audio streaming.

Change-Id: I0e5d4374266887b09fdab5846f85ed25b5a1679c

contrib/src/ffmpeg/rules.mak

@@ -70,6 +70,38 @@ FFMPEGCONF += \
 	--enable-encoder=libopus \
 	--enable-decoder=libopus
 
+# decoders for ringtones and audio streaming
+FFMPEGCONF += \
+	--enable-decoder=flac \
+	--enable-decoder=vorbis \
+	--enable-decoder=pcm_u24be \
+	--enable-decoder=pcm_u24le \
+	--enable-decoder=pcm_u32be \
+	--enable-decoder=pcm_u32le \
+	--enable-decoder=pcm_u8 \
+	--enable-decoder=pcm_f16le \
+	--enable-decoder=pcm_f24le \
+	--enable-decoder=pcm_f32be \
+	--enable-decoder=pcm_f32le \
+	--enable-decoder=pcm_f64be \
+	--enable-decoder=pcm_f64le \
+	--enable-decoder=pcm_s16be \
+	--enable-decoder=pcm_s16be_planar \
+	--enable-decoder=pcm_s16le \
+	--enable-decoder=pcm_s16le_planar \
+	--enable-decoder=pcm_s24be \
+	--enable-decoder=pcm_s24le \
+	--enable-decoder=pcm_s24le_planar \
+	--enable-decoder=pcm_s32be \
+	--enable-decoder=pcm_s32le \
+	--enable-decoder=pcm_s32le_planar \
+	--enable-decoder=pcm_s64be \
+	--enable-decoder=pcm_s64le \
+	--enable-decoder=pcm_s8 \
+	--enable-decoder=pcm_s8_planar \
+	--enable-decoder=pcm_u16be \
+	--enable-decoder=pcm_u16le
+
 #encoders/decoders for images
 FFMPEGCONF += \
 	--enable-encoder=gif \