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picogus/sw/cdrom/cdrom.h
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Ian Scott 29da06d8ea Fix multifw build
2026-03-30 08:25:53 -06:00

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/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* Generic CD-ROM drive core header.
*
* Authors: Miran Grca, <mgrca8@gmail.com>,
* Kevin Moonlight, <me@yyzkevin.com>
* Ian Scott, <ian@polpo.org>
*
* Copyright 2016-2019 Miran Grca.
* Copyright (C) 2024 Kevin Moonlight
* Copyright (C) 2025 Ian Scott
* Copyright (C) 2025 Daniel Arnold
*/
#ifndef EMU_CDROM_H
#define EMU_CDROM_H
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#define CD_STATUS_EMPTY 0
#define CD_STATUS_DATA_ONLY 1
#define CD_STATUS_PAUSED 2
#define CD_STATUS_PLAYING 3
#define CD_STATUS_STOPPED 4
#define CD_STATUS_PLAYING_COMPLETED 5
/* Medium changed flag. */
#define CD_STATUS_MEDIUM_CHANGED 0x80
#define CD_TRACK_AUDIO 0x08
#define CD_TRACK_MODE2 0x04
#define CD_READ_DATA 0
#define CD_READ_AUDIO 1
#define CD_READ_RAW 2
#define CD_TOC_NORMAL 0
#define CD_TOC_SESSION 1
#define CD_TOC_RAW 2
#define CD_IMAGE_HISTORY 4
// #define BUF_SIZE 32768
#define BUF_SIZE 4096
#define CDROM_IMAGE 200
#define RAW_SECTOR_SIZE 2352
#define SAMPLES_PER_SECTOR 1176
#define STEREO_SAMPLES_PER_SECTOR 588
#define STAT_READY 0x01
#define STAT_PLAY 0x08
#define STAT_ERROR 0x10
#define STAT_DISK 0x40
#define STAT_TRAY 0x80
/* This is so that if/when this is changed to something else,
changing this one define will be enough. */
#define CDROM_EMPTY !dev->host_drive
#include "../../common/picogus.h"
#ifdef __cplusplus
extern "C" {
#endif
/* To shut up the GCC compilers. */
struct cdrom;
typedef enum
{
CD_COMMAND_NONE,
CD_COMMAND_IMAGE_LOAD,
CD_COMMAND_IMAGE_LOAD_INDEX,
CD_COMMAND_IMAGE_EJECT,
CD_COMMAND_IMAGE_LIST
} cdrom_image_command_t;
/*
typedef enum
{
CD_STATUS_ERROR = -1,
CD_STATUS_IDLE,
CD_STATUS_BUSY,
CD_STATUS_READY,
} cdrom_image_status_t;
*/
typedef struct subchannel_t {
uint8_t attr;
uint8_t track;
uint8_t index;
uint8_t abs_m;
uint8_t abs_s;
uint8_t abs_f;
uint8_t rel_m;
uint8_t rel_s;
uint8_t rel_f;
} subchannel_t;
typedef struct track_info_t {
int number;
uint8_t attr;
uint8_t m;
uint8_t s;
uint8_t f;
} track_info_t;
/* Define the various CD-ROM drive operations (ops). */
typedef struct cdrom_ops_t {
void (*get_tracks)(struct cdrom *dev, int *first, int *last);
void (*get_track_info)(struct cdrom *dev, uint32_t track, int end, track_info_t *ti);
void (*get_subchannel)(struct cdrom *dev, uint32_t lba, subchannel_t *subc);
int (*is_track_pre)(struct cdrom *dev, uint32_t lba);
int (*sector_size)(struct cdrom *dev, uint32_t lba);
int (*read_sector)(struct cdrom *dev, int type, uint8_t *b, uint32_t lba);
int (*track_type)(struct cdrom *dev, uint32_t lba);
void (*exit)(struct cdrom *dev);
} cdrom_ops_t;
typedef struct cdrom_fifo_t {
uint8_t *data;
uint16_t size;
volatile uint16_t head;
volatile uint16_t tail;
} cdrom_fifo_t;
#include "audio/audio_fifo.h"
typedef struct cdrom {
uint8_t id;
cdrom_fifo_t info_fifo;
cdrom_fifo_t data_fifo;
volatile uint8_t req_m;
volatile uint8_t req_s;
volatile uint8_t req_f;
volatile uint8_t req_cur;
volatile uint8_t req_total;
uint8_t media_changed;
cdrom_image_command_t image_command;
cdrom_image_status_t image_status;
uint8_t image_data;
uint8_t disk_loaded;
uint8_t cd_status; /* Struct variable reserved for
media status. */
uint8_t speed;
uint8_t cur_speed;
uint8_t errors[8];
int is_dir;
void *priv;
char **image_list;
int image_count;
char image_path[128];
uint32_t sound_on;
uint32_t cdrom_capacity;
volatile uint32_t seek_pos;
volatile uint32_t seek_diff;
uint32_t cd_end;
uint32_t type;
int host_drive;
int prev_host_drive;
volatile int cd_buflen;
int audio_op;
int audio_muted_soft;
const cdrom_ops_t *ops;
void *image;
void (*insert)(void *priv);
void (*close)(void *priv);
uint32_t (*get_volume)(void *p, int channel);
uint32_t (*get_channel)(void *p, int channel);
const char *error_str;
// int16_t cd_buffer[BUF_SIZE];
uint8_t audio_sector_buffer[RAW_SECTOR_SIZE];
sample_pair *current_sector_samples; // Convenience pointer: (sample_pair*)audio_sector_buffer
int audio_sector_consumed_pairs; // Stereo pairs consumed from current_sector_samples
#if USE_CD_AUDIO_FIFO
audio_fifo_t audio_fifo;
#endif
} cdrom_t;
extern cdrom_t cdrom;
extern void cdrom_error(cdrom_t *dev,uint8_t code);
extern void cdrom_read_errors(cdrom_t *dev,uint8_t *b);
extern uint8_t cdrom_has_errors(cdrom_t *dev);
void cdrom_fifo_init(cdrom_fifo_t *fifo,uint16_t size);
void cdrom_fifo_write(cdrom_fifo_t *fifo,uint8_t val);
void cdrom_fifo_write_multiple(cdrom_fifo_t *fifo, const uint8_t *data, size_t data_size);
uint16_t cdrom_fifo_level(cdrom_fifo_t *fifo);
uint8_t cdrom_fifo_read(cdrom_fifo_t *fifo);
void cdrom_fifo_clear(cdrom_fifo_t *fifo);
void cdrom_read_data(cdrom_t *dev);
void cdrom_tasks(cdrom_t *dev);
void cdrom_output_status(cdrom_t *dev);
uint8_t cdrom_status(cdrom_t *dev);
#if USE_CD_AUDIO_FIFO
extern audio_fifo_t* cdrom_audio_fifo_peek(cdrom_t *dev);
void cdrom_audio_fifo_init(cdrom_t *dev);
#endif
extern int cdrom_lba_to_msf_accurate(int lba);
extern double cdrom_seek_time(cdrom_t *dev);
extern void cdrom_stop(cdrom_t *dev);
extern int cdrom_is_pre(cdrom_t *dev, uint32_t lba);
extern bool cdrom_audio_callback(cdrom_t *dev, uint32_t len);
extern uint32_t cdrom_audio_callback_simple(cdrom_t *dev, int16_t *buffer, uint32_t len, bool pad);
extern uint8_t cdrom_audio_track_search(cdrom_t *dev, uint32_t pos, int type, uint8_t playbit);
extern uint8_t cdrom_audio_track_search_pioneer(cdrom_t *dev, uint32_t pos, uint8_t playbit);
extern uint8_t cdrom_audio_play_pioneer(cdrom_t *dev, uint32_t pos);
extern uint8_t cdrom_audio_play_toshiba(cdrom_t *dev, uint32_t pos, int type);
extern void cdrom_audio_pause_resume(cdrom_t *dev, uint8_t resume);
//Kevin
extern uint8_t cdrom_read_toc(cdrom_t *dev, unsigned char *b, uint8_t track);
extern uint8_t cdrom_disc_info(cdrom_t *dev,unsigned char *b);
extern uint8_t cdrom_disc_capacity(cdrom_t *dev,unsigned char *b);
extern uint8_t cdrom_seek(cdrom_t *dev, int m, int s, int f);
extern uint8_t cdrom_audio_playmsf(cdrom_t *dev, int m,int s, int f, int M, int S, int F);
extern uint8_t cdrom_get_subq(cdrom_t *dev,uint8_t *b);
extern void cdrom_close_handler(uint8_t id);
extern void cdrom_insert(uint8_t id);
extern void cdrom_eject(uint8_t id);
extern void cdrom_reload(uint8_t id);
extern int cdrom_image_open(cdrom_t *dev, const char *fn);
extern void cdrom_image_close(cdrom_t *dev);
extern void cdrom_image_reset(cdrom_t *dev);
extern void cdrom_ioctl_eject(void);
extern void cdrom_ioctl_load(void);
extern int cdrom_ioctl_open(cdrom_t *dev, const char d);
extern void cdrom_update_cdb(uint8_t *cdb, int lba_pos,
int number_of_blocks);
extern int find_cdrom_for_scsi_id(uint8_t scsi_id);
extern void cdrom_close(void);
extern void cdrom_global_init(void);
extern int32_t cd_audio_volume;
extern void cdrom_set_volume_scale(uint8_t percent);
#ifdef __cplusplus
}
#endif
#endif /*EMU_CDROM_H*/
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