audio.h

#ifndef AUDIO_H
#define AUDIO_H

#include <stdbool.h>

typedef enum {
	SINE,
	SAW,
	SQUARE,
	NOISE,
	REST
} WAVEFORM;

// Channel indices
#define CHANNEL_MUSIC 0
#define CHANNEL_SFX 1
#define NUM_CHANNELS 2

// Audio initialization and processing
void tb_audio_init();
void process_audio();

// ABC notation loading
// channel_num: CHANNEL_MUSIC or CHANNEL_SFX, abc_string: ABC notation, waveform: synth type, repeat: loop playback
int audio_load_abc(int channel_num, const char *abc_string, WAVEFORM waveform, bool repeat);

// Channel control
void audio_stop_channel(int channel_num);
void audio_stop_all();
bool is_channel_active(int channel_num);

#endif