// Commander X16 Emulator
// Copyright (c) 2020 Frank van den Hoef
// All rights reserved. License: 2-clause BSD

#pragma once

#include <SDL.h>
#ifdef __EMSCRIPTEN__
	#define SAMPLES_PER_BUFFER (1024)
	#define SAMP_POS_FRAC_BITS (22)
#else
	#define SAMPLES_PER_BUFFER (256)
	#define SAMP_POS_FRAC_BITS (24)
#endif
#define VERA_SAMP_CLKS_PER_CPU_CLK ((25000000ULL << SAMP_POS_FRAC_BITS) / 512 / MHZ / 1000000)
#define YM_SAMP_CLKS_PER_CPU_CLK ((3579545ULL << SAMP_POS_FRAC_BITS) / 64 / MHZ / 1000000)
#define SAMPLE_BYTES (2 * sizeof(int16_t))
#define SAMP_POS_MASK (SAMPLES_PER_BUFFER - 1)
#define SAMP_POS_MASK_FRAC (((uint32_t)SAMPLES_PER_BUFFER << SAMP_POS_FRAC_BITS) - 1)

#define AUDIO_SAMPLERATE (25000000 / 512)
void audio_callback(void *userdata, Uint8 *stream, int len);
void audio_init(int num_audio_buffers);
void audio_close(void);
void audio_step(int cpu_clocks);
void audio_render();

void audio_usage(void);
#ifndef IN_AUDIO_C
extern uint32_t buffer_size;
#endif