45 lines
784 B
C
45 lines
784 B
C
/*
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// Created by bruno on 16.2.2025.
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*/
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#ifndef RISCB_AUDIO_H
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#define RISCB_AUDIO_H
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#include <SDL2/SDL.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define SAMPLE_RATE 44100
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#define NUM_SYNTH_VOICES 256
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typedef enum Waveform {
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WAVE_SINE,
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WAVE_SQUARE,
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WAVE_SAWTOOTH,
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WAVE_TRIANGLE,
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WAVE_NOISE
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} Waveform;
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typedef struct SynthVoice {
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Waveform waveform;
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uint8_t phase;
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uint16_t frequency;
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uint8_t volume;
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SDL_Rect sourceRect;
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} SynthVoice;
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typedef struct AudioData {
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SynthVoice synthVoices[NUM_SYNTH_VOICES];
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SDL_Rect *playerRect;
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float maxPanDistance;
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} AudioData;
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extern AudioData audioData;
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void audio_callback(void *userdata, Uint8 *stream, int len);
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uint16_t getAvailableChannel();
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#endif //RISCB_AUDIO_H
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