/* Minimal 86Box environment shim for the vendored EMU8000 core (emu8k.cpp).
 * Supplies exactly what snd_emu8k.c pulled from 86Box headers:
 *   - io_sethandler/io_removehandler (implemented in vweawe.cpp on top of
 *     DOSBox-X IO_Register*Handler, with the 86Box handler signatures)
 *   - wavetable_pos_global (the render-target sample clock; vweawe.cpp sets
 *     it per mixer block instead of 86Box's per-frame sound clock)
 *   - pclog/pclog_ex/fatal logging and the UNUSED() parameter marker
 *   - emu8k_shim_rom_fopen(): optional AWE32 GM ROM via $VWE_AWE_ROM
 */
#ifndef VWE_EMU8K_SHIM_H
#define VWE_EMU8K_SHIM_H

#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/* 86Box io.h handler signatures (priv-pointer style) */
typedef uint8_t  (*emu8k_io_inb_t)(uint16_t addr, void *priv);
typedef uint16_t (*emu8k_io_inw_t)(uint16_t addr, void *priv);
typedef uint32_t (*emu8k_io_inl_t)(uint16_t addr, void *priv);
typedef void (*emu8k_io_outb_t)(uint16_t addr, uint8_t val, void *priv);
typedef void (*emu8k_io_outw_t)(uint16_t addr, uint16_t val, void *priv);
typedef void (*emu8k_io_outl_t)(uint16_t addr, uint32_t val, void *priv);

void io_sethandler(uint16_t base, int size,
                   emu8k_io_inb_t inb, emu8k_io_inw_t inw, emu8k_io_inl_t inl,
                   emu8k_io_outb_t outb, emu8k_io_outw_t outw,
                   emu8k_io_outl_t outl, void *priv);
void io_removehandler(uint16_t base, int size,
                      emu8k_io_inb_t inb, emu8k_io_inw_t inw,
                      emu8k_io_inl_t inl, emu8k_io_outb_t outb,
                      emu8k_io_outw_t outw, emu8k_io_outl_t outl, void *priv);

/* render-target sample position for emu8k_update() (86Box sound.h) */
extern int wavetable_pos_global;

FILE *emu8k_shim_rom_fopen(void);
/* samples elapsed since the last mixer render (WC interpolation) */
unsigned emu8k_shim_wc_extra(void);

#define pclog(...)        fprintf(stderr, __VA_ARGS__)
#define pclog_ex(fmt, ap) vfprintf(stderr, fmt, ap)
#define fatal(...)        fprintf(stderr, __VA_ARGS__)
#define UNUSED(arg)       arg

#endif