86Box/src/cdrom-null.c

/* Copyright holders: Sarah Walker
   see COPYING for more details
*/
#include "ibm.h"
#include "cdrom.h"
#include "cdrom-ioctl.h"

static CDROM null_cdrom;

static int null_ready(uint8_t id)
{
        return 0;
}

/* Always return 0, the contents of a null CD-ROM drive never change. */
static int null_medium_changed(uint8_t id)
{
        return 0;
}

static uint8_t null_getcurrentsubchannel(uint8_t id, uint8_t *b, int msf)
{
        return 0x13;
}

static void null_eject(uint8_t id)
{
}

static void null_load(uint8_t id)
{
}

static int null_sector_data_type(uint8_t id, int sector, int ismsf)
{
	return 0;
}

static int null_readsector_raw(uint8_t id, uint8_t *buffer, int sector, int ismsf, int cdrom_sector_type, int cdrom_sector_flags, int *len)
{
	*len = 0;
	return 0;
}

static int null_read_track_information(uint8_t id, uint8_t *in_cdb, uint8_t *b)
{
		return 0;
}

static int null_readtoc(uint8_t id, unsigned char *b, unsigned char starttrack, int msf, int maxlen, int single)
{
        return 0;
}

static int null_readtoc_session(uint8_t id, unsigned char *b, int msf, int maxlen)
{
		return 0;
}

static int null_readtoc_raw(uint8_t id, unsigned char *b, int msf, int maxlen)
{
		return 0;
}

static uint32_t null_size(uint8_t id)
{
        return 0;
}

static int null_status(uint8_t id)
{
	return CD_STATUS_EMPTY;
}

void cdrom_null_reset(uint8_t id)
{
}

int cdrom_null_open(uint8_t id, char d)
{
        cdrom_drives[id].handler = &null_cdrom;
        return 0;
}

void null_close(uint8_t id)
{
}

static void null_exit(uint8_t id)
{
}

static int null_is_track_audio(uint8_t id, uint32_t pos, int ismsf)
{
	return 0;
}

static int null_pass_through(uint8_t id, uint8_t *in_cdb, uint8_t *b, uint32_t *len)
{
	return 0;
}

static CDROM null_cdrom =
{
        null_ready,
		null_medium_changed,
		NULL,
		NULL,
        null_readtoc,
        null_readtoc_session,
		null_readtoc_raw,
        null_getcurrentsubchannel,
        null_pass_through,
		null_sector_data_type,
		null_readsector_raw,
        NULL,
        null_load,
        null_eject,
        NULL,
        NULL,
        null_size,
		null_status,
		null_is_track_audio,
        NULL,
        null_exit
};