ffmpeg: let ffmpeg choose necessary parsers for audio-dec and custom

This change allows ffmpeg's configure script to determine the necessary parsers based on
selected decoders & encoders. For libffmpeg-audio-dec, this changes from our selecting:

aac, ac3, flac, mpegaudio, opus and aac_latm

to ffmpeg's configure script selecting:

aac_latm, ac3, flac, mpegaudio

for minor space savings and a simpler Makefile to manage on our end.

In libffmpeg-custom, don't select any parsers when choosing decoders/encoders. I'm undecided
on removing the parser selection in its entirety here.

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

multimedia/ffmpeg/Config.in

@@ -119,12 +119,6 @@ config FFMPEG_CUSTOM_AUDIO_DEC_SUPPORT
 	select FFMPEG_CUSTOM_DEMUXER_sdp
 	select FFMPEG_CUSTOM_DEMUXER_wav
 	select FFMPEG_CUSTOM_DEMUXER_wv
-	select FFMPEG_CUSTOM_PARSER_aac
-	select FFMPEG_CUSTOM_PARSER_aac_latm
-	select FFMPEG_CUSTOM_PARSER_ac3
-	select FFMPEG_CUSTOM_PARSER_flac
-	select FFMPEG_CUSTOM_PARSER_mpegaudio
-	select FFMPEG_CUSTOM_PARSER_opus
 	select FFMPEG_CUSTOM_PROTOCOL_file
 	select FFMPEG_CUSTOM_PROTOCOL_http
 	select FFMPEG_CUSTOM_PROTOCOL_rtp
@@ -160,14 +154,12 @@ config FFMPEG_CUSTOM_SELECT_libx264
 	select FFMPEG_CUSTOM_DECODER_h264
 	select FFMPEG_CUSTOM_MUXER_h264
 	select FFMPEG_CUSTOM_DEMUXER_h264
-	select FFMPEG_CUSTOM_PARSER_h264
 
 comment "Encoders"
 
 config FFMPEG_CUSTOM_ENCODER_ac3
 	bool "AC3"
 	depends on FFMPEG_CUSTOM_PATENTED
-	select FFMPEG_CUSTOM_PARSER_ac3
 
 config FFMPEG_CUSTOM_ENCODER_jpegls
 	bool "JPEG-LS"
@@ -204,7 +196,6 @@ comment "Decoders"
 config FFMPEG_CUSTOM_DECODER_aac
 	bool "AAC (Advanced Audio Coding)"
 	depends on FFMPEG_CUSTOM_PATENTED
-	select FFMPEG_CUSTOM_PARSER_aac
 
 config FFMPEG_CUSTOM_SELECT_adpcm
 	bool "ADPCM (multiple types)"
@@ -212,7 +203,6 @@ config FFMPEG_CUSTOM_SELECT_adpcm
 config FFMPEG_CUSTOM_DECODER_ac3
 	bool "AC3"
 	depends on FFMPEG_CUSTOM_PATENTED
-	select FFMPEG_CUSTOM_PARSER_ac3
 
 config FFMPEG_CUSTOM_DECODER_alac
 	bool "ALAC"
@@ -234,7 +224,6 @@ config FFMPEG_CUSTOM_DECODER_atrac3
 
 config FFMPEG_CUSTOM_DECODER_flac
 	bool "FLAC"
-	select FFMPEG_CUSTOM_PARSER_flac
 
 config FFMPEG_CUSTOM_DECODER_gif
 	bool "GIF"
@@ -392,7 +381,6 @@ config FFMPEG_CUSTOM_DEMUXER_mov
 
 config FFMPEG_CUSTOM_DEMUXER_mp3
 	bool "MP3 (MPEG Audio Layer 3)"
-	select FFMPEG_CUSTOM_PARSER_mpegaudio
 
 config FFMPEG_CUSTOM_DEMUXER_mpegvideo
 	bool "MPEG Video"

multimedia/ffmpeg/Makefile

@@ -199,14 +199,6 @@ FFMPEG_AUDIO_DEMUXERS:= \
 	wav \
 	wv \
 
-FFMPEG_AUDIO_PARSERS:= \
-	aac \
-	aac_latm \
-	ac3 \
-	flac \
-	mpegaudio \
-	opus \
-
 FFMPEG_AUDIO_PROTOCOLS:= \
 	file http icecast rtp tcp udp
 
@@ -549,7 +541,6 @@ ifeq ($(BUILD_VARIANT),audio-dec)
 	--disable-everything \
 	$(call FFMPEG_ENABLE,decoder,$(FFMPEG_AUDIO_DECODERS)) \
 	$(call FFMPEG_ENABLE,demuxer,$(FFMPEG_AUDIO_DEMUXERS)) \
-	$(call FFMPEG_ENABLE,parser,$(FFMPEG_AUDIO_PARSERS)) \
 	$(call FFMPEG_ENABLE,protocol,$(FFMPEG_AUDIO_PROTOCOLS)) \
 	--disable-decoder=pcm_bluray,pcm_dvd \