Add sound support

main.c

@@ -6,6 +6,7 @@
 #include "time.c"
 #include "events.c"
 #include "input.c"
+#include "sound.c"
 
 unigi_type_error unigi_init() {
 	return 0;

sound.c

@@ -0,0 +1,22 @@
+SDL_AudioSpec unigi_platform_audio_spec;
+
+void unigi_platform_audio_callback(void * userdata, uint8_t * stream, int len) {
+	void (* callback)(uint8_t *, size_t) = userdata;
+	callback(stream, len);
+}
+
+unigi_type_error unigi_sound_init(void (* callback)(uint8_t *, size_t)) {
+	SDL_AudioSpec desired;
+	desired.freq = 44100;
+	desired.channels = 2;
+	desired.samples = 1024;
+	desired.callback = unigi_platform_audio_callback;
+	desired.userdata = callback;
+	
+	if (SDL_OpenAudio(&desired, &unigi_platform_audio_spec) < 0) {
+		return 1;
+	} else {
+		SDL_PauseAudio(0);
+		return 0;
+	}
+}