148 lines
2.1 KiB
C
148 lines
2.1 KiB
C
/* Copyright holders: Sarah Walker
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see COPYING for more details
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*/
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#include "ibm.h"
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#include "cdrom.h"
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#include "cdrom-ioctl.h"
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int cdrom_drive;
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static CDROM null_cdrom;
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void cdrom_null_audio_callback(int16_t *output, int len)
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{
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memset(output, 0, len * 2);
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}
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void cdrom_null_audio_stop()
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{
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}
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static void null_playaudio(uint32_t pos, uint32_t len, int ismsf)
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{
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}
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static void null_pause(void)
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{
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}
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static void null_resume(void)
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{
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}
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static void null_stop(void)
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{
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}
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static void null_seek(uint32_t pos)
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{
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}
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static int null_ready(void)
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{
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return 0;
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}
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/* Always return 0, the contents of a null CD-ROM drive never change. */
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static int null_medium_changed(void)
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{
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return 0;
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}
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static uint8_t null_getcurrentsubchannel(uint8_t *b, int msf)
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{
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return 0x13;
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}
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static void null_eject(void)
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{
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}
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static void null_load(void)
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{
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}
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static int null_sector_data_type(int sector, int ismsf)
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{
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return 0;
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}
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static void null_readsector_raw(uint8_t *b, int sector, int ismsf)
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{
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}
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static int null_readtoc(unsigned char *b, unsigned char starttrack, int msf, int maxlen, int single)
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{
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return 0;
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}
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static int null_readtoc_session(unsigned char *b, int msf, int maxlen)
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{
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return 0;
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}
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static int null_readtoc_raw(unsigned char *b, int msf, int maxlen)
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{
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return 0;
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}
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static uint32_t null_size()
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{
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return 0;
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}
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static int null_status()
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{
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return CD_STATUS_EMPTY;
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}
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void cdrom_null_reset()
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{
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}
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int cdrom_null_open(char d)
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{
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cdrom = &null_cdrom;
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return 0;
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}
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void null_close(void)
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{
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}
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static void null_exit(void)
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{
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}
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static int null_is_track_audio(uint32_t pos, int ismsf)
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{
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return 0;
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}
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static CDROM null_cdrom =
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{
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null_ready,
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null_medium_changed,
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null_readtoc,
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null_readtoc_session,
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null_readtoc_raw,
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null_getcurrentsubchannel,
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NULL,
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NULL,
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NULL,
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NULL,
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null_sector_data_type,
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null_readsector_raw,
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null_playaudio,
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null_seek,
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null_load,
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null_eject,
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null_pause,
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null_resume,
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null_size,
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null_status,
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null_is_track_audio,
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null_stop,
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null_exit
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};
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