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#ifndef VGM_H_
#define VGM_H_
#include <stdint.h>
#include <stdio.h>
#pragma pack(push, 1)
typedef struct {
char ident[4];
uint32_t eof_offset;
uint32_t version;
uint32_t sn76489_clk;
uint32_t ym2413_clk;
uint32_t gd3_offset;
uint32_t num_samples;
uint32_t loop_offset;
uint32_t loop_samples;
uint32_t rate;
uint16_t sn76489_fb;
uint8_t sn76489_shift;
uint8_t sn76489_flags;
uint32_t ym2612_clk;
uint32_t ym2151_clk;
uint32_t data_offset;
uint32_t sega_pcm_clk;
uint32_t sega_pcm_reg;
} vgm_header;
enum {
CMD_PSG_STEREO = 0x4F,
CMD_PSG,
CMD_YM2413,
CMD_YM2612_0,
CMD_YM2612_1,
CMD_YM2151,
CMD_YM2203,
CMD_YM2608_0,
CMD_YM2608_1,
CMD_YM2610_0,
CMD_YM2610_1,
CMD_YM3812,
CMD_YM3526,
CMD_Y8950,
CMD_YMZ280B,
CMD_YMF262_0,
CMD_YMF262_1,
CMD_WAIT = 0x61,
CMD_WAIT_60,
CMD_WAIT_50,
CMD_END = 0x66,
CMD_DATA,
CMD_PCM_WRITE,
CMD_WAIT_SHORT = 0x70,
CMD_YM2612_DAC = 0x80,
CMD_DAC_STREAM_SETUP = 0x90,
CMD_DAC_STREAM_DATA,
CMD_DAC_STREAM_FREQ,
CMD_DAC_STREAM_START,
CMD_DAC_STREAM_STOP,
CMD_DAC_STREAM_STARTFAST,
CMD_DATA_SEEK = 0xE0
};
enum {
DATA_YM2612_PCM = 0
};
#pragma pack(pop)
typedef struct {
struct data_block *next;
uint8_t *data;
uint32_t size;
uint8_t type;
} data_block;
typedef struct {
vgm_header header;
FILE *f;
uint32_t master_clock;
uint32_t last_cycle;
uint32_t extra_delta;
} vgm_writer;
vgm_writer *vgm_write_open(char *filename, uint32_t rate, uint32_t clock, uint32_t cycle);
void vgm_sn76489_init(vgm_writer *writer, uint32_t clock, uint16_t feedback, uint8_t shift_reg_size, uint8_t flags);
void vgm_sn76489_write(vgm_writer *writer, uint32_t cycle, uint8_t value);
void vgm_ym2612_init(vgm_writer *writer, uint32_t clock);
void vgm_ym2612_part1_write(vgm_writer *writer, uint32_t cycle, uint8_t reg, uint8_t value);
void vgm_ym2612_part2_write(vgm_writer *writer, uint32_t cycle, uint8_t reg, uint8_t value);
void vgm_adjust_cycles(vgm_writer *writer, uint32_t deduction);
void vgm_close(vgm_writer *writer);
#endif //VGM_H_
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