sound.h

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/*
 * Copyright (c) 2023 Adrian "asie" Siekierka
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 *
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 *
 * 3. This notice may not be removed or altered from any source distribution.
 */

 
#ifndef LIBWS_SOUND_H_
#define LIBWS_SOUND_H_
 
#ifndef __ASSEMBLER__
#include <stdbool.h>
#include <stdint.h>
#endif
#include "ports.h"
#include "util.h"
#include "system.h"


#define WS_SOUND_UPDATE_HZ_TO_FREQ(hz) (-((uint16_t) WS_HZ_TO_CLOCK_DIVIDER((hz), WS_SYSTEM_CLOCK_HZ)))

#define WS_SOUND_WAVE_HZ_TO_FREQ(hz, length) (-((uint16_t) WS_HZ_TO_CLOCK_DIVIDER((hz), WS_SYSTEM_CLOCK_HZ / (length))))

#define WS_SOUND_SWEEP_HZ_TO_FREQ(hz) ((uint16_t) WS_HZ_TO_CLOCK_DIVIDER((hz), WS_SYSTEM_CLOCK_HZ / 8192))
 
#ifndef __ASSEMBLER__
 
typedef struct {
    uint8_t data[16];
} ws_sound_wave_t;
 
typedef struct {
    ws_sound_wave_t wave[4];
} ws_sound_wavetable_t;

void ws_sound_reset(void);

static inline void ws_sound_set_wavetable_address(const void __wf_iram* address) {
    outportb(WS_SOUND_WAVE_BASE_PORT, WS_SOUND_WAVE_BASE_ADDR(address));
}
 
#endif

 
#endif /* LIBWS_SOUND_H_ */