package/sdl_mixer: add MIDI support using Timidity

Add MIDI playback support using SDL_mixer' built-in Timidity synth.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/sdl_mixer/Config.in

@@ -9,3 +9,13 @@ config BR2_PACKAGE_SDL_MIXER
 	  SMPEG MP3 libraries.
 
 	  http://www.libsdl.org/projects/SDL_mixer/
+
+if BR2_PACKAGE_SDL_MIXER
+
+config BR2_PACKAGE_SDL_MIXER_MIDI_TIMIDITY
+	bool "MIDI support with built-in Timidity synth"
+	help
+	  Support MIDI audio using the built-in synth based on Timidity.
+	  You will need MIDI instruments installed in the filesystem.
+
+endif

package/sdl_mixer/sdl_mixer.mk

@@ -31,9 +31,18 @@ SDL_MIXER_DEPENDENCIES += fluidsynth
 SDL_MIXER_CONF_OPTS += \
 	--enable-music-midi \
 	--enable-music-fluidsynth-midi
-else
+SDL_MIXER_HAS_MIDI = YES
+endif
+
+ifeq ($(BR2_PACKAGE_SDL_MIXER_MIDI_TIMIDITY),y)
 SDL_MIXER_CONF_OPTS += \
-	--disable-music-midi
+	--enable-music-midi \
+	--enable-music-timidity-midi
+SDL_MIXER_HAS_MIDI = YES
+endif
+
+ifneq ($(SDL_MIXER_HAS_MIDI),YES)
+SDL_MIXER_CONF_OPTS += --disable-music-midi
 endif
 
 ifeq ($(BR2_PACKAGE_LIBMAD),y)