86Box/src/include/86box/cdrom_image_backend.h

/*
 * 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.
 *
 *		CD-ROM image file handling module header , translated to C
 *		from cdrom_dosbox.h.
 *
 *
 *
 * Authors:	Miran Grca, <mgrca8@gmail.com>
 *		Fred N. van Kempen, <decwiz@yahoo.com>
 *		The DOSBox Team, <unknown>
 *
 *		Copyright 2016-2020 Miran Grca.
 *		Copyright 2017-2020 Fred N. van Kempen.
 *		Copyright 2002-2020 The DOSBox Team.
 */

#ifndef CDROM_IMAGE_BACKEND_H
# define CDROM_IMAGE_BACKEND_H

#define RAW_SECTOR_SIZE		2352
#define COOKED_SECTOR_SIZE	2048

#define DATA_TRACK		0x14
#define AUDIO_TRACK		0x10

#define CD_FPS  75
#define FRAMES_TO_MSF(f, M,S,F) {                                       \
        uint64_t value = f;                                             \
        *(F) = (value%CD_FPS) & 0xff;                                   \
        value /= CD_FPS;                                                \
        *(S) = (value%60) & 0xff;                                       \
        value /= 60;                                                    \
        *(M) = value & 0xff;                                            \
}
#define MSF_TO_FRAMES(M, S, F)  ((M)*60*CD_FPS+(S)*CD_FPS+(F))


typedef struct SMSF {
    uint16_t	min;
    uint8_t	sec;
    uint8_t	fr;
} TMSF;

/* Track file struct. */
typedef struct {
    int			(*read)(void *p, uint8_t *buffer, uint64_t seek, size_t count);
    uint64_t		(*get_length)(void *p);
    void		(*close)(void *p);

    char		fn[260];
    FILE		*file;
} track_file_t;

typedef struct {
    int			number, track_number, attr, sector_size,
			mode2, form, pre, pad;
    uint64_t		start, length,
			skip;
    track_file_t	*file;
} track_t;

typedef struct {
    int			tracks_num;
    track_t		*tracks;
} cd_img_t;


/* Binary file functions. */
extern void	cdi_close(cd_img_t *cdi);
extern int	cdi_set_device(cd_img_t *cdi, const char *path);
extern int	cdi_get_audio_tracks(cd_img_t *cdi, int *st_track, int *end, TMSF *lead_out);
extern int	cdi_get_audio_tracks_lba(cd_img_t *cdi, int *st_track, int *end, uint32_t *lead_out);
extern int	cdi_get_audio_track_pre(cd_img_t *cdi, int track);
extern int	cdi_get_audio_track_info(cd_img_t *cdi, int end, int track, int *track_num, TMSF *start, uint8_t *attr);
extern int	cdi_get_audio_track_info_lba(cd_img_t *cdi, int end, int track, int *track_num, uint32_t *start, uint8_t *attr);
extern int	cdi_get_track(cd_img_t *cdi, uint32_t sector);
extern int	cdi_get_audio_sub(cd_img_t *cdi, uint32_t sector, uint8_t *attr, uint8_t *track, uint8_t *index, TMSF *rel_pos, TMSF *abs_pos);
extern int	cdi_read_sector(cd_img_t *cdi, uint8_t *buffer, int raw, uint32_t sector);
extern int	cdi_read_sectors(cd_img_t *cdi, uint8_t *buffer, int raw, uint32_t sector, uint32_t num);
extern int	cdi_read_sector_sub(cd_img_t *cdi, uint8_t *buffer, uint32_t sector);
extern int	cdi_get_sector_size(cd_img_t *cdi, uint32_t sector);
extern int	cdi_is_mode2(cd_img_t *cdi, uint32_t sector);
extern int	cdi_get_mode2_form(cd_img_t *cdi, uint32_t sector);
extern int	cdi_load_iso(cd_img_t *cdi, const char *filename);
extern int	cdi_load_cue(cd_img_t *cdi, const char *cuefile);
extern int	cdi_has_data_track(cd_img_t *cdi);
extern int	cdi_has_audio_track(cd_img_t *cdi);



#endif /*CDROM_IMAGE_BACKEND_H*/