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70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/* license:BSD-3-Clause
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* copyright-holders:Aaron Giles
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***************************************************************************
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cdrom.h
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Generic MAME cd-rom implementation
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***************************************************************************/
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#pragma once
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#ifndef __CDROM_H__
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#define __CDROM_H__
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#include <stdint.h>
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/***************************************************************************
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CONSTANTS
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***************************************************************************/
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/* tracks are padded to a multiple of this many frames */
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#define CD_TRACK_PADDING (4)
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#define CD_MAX_TRACKS (99) /* AFAIK the theoretical limit */
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#define CD_MAX_SECTOR_DATA (2352)
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#define CD_MAX_SUBCODE_DATA (96)
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#define CD_FRAME_SIZE (CD_MAX_SECTOR_DATA + CD_MAX_SUBCODE_DATA)
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#define CD_FRAMES_PER_HUNK (8)
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#define CD_METADATA_WORDS (1+(CD_MAX_TRACKS * 6))
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enum
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{
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CD_TRACK_MODE1 = 0, /* mode 1 2048 bytes/sector */
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CD_TRACK_MODE1_RAW, /* mode 1 2352 bytes/sector */
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CD_TRACK_MODE2, /* mode 2 2336 bytes/sector */
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CD_TRACK_MODE2_FORM1, /* mode 2 2048 bytes/sector */
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CD_TRACK_MODE2_FORM2, /* mode 2 2324 bytes/sector */
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CD_TRACK_MODE2_FORM_MIX, /* mode 2 2336 bytes/sector */
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CD_TRACK_MODE2_RAW, /* mode 2 2352 bytes / sector */
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CD_TRACK_AUDIO, /* redbook audio track 2352 bytes/sector (588 samples) */
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CD_TRACK_RAW_DONTCARE /* special flag for cdrom_read_data: just return me whatever is there */
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};
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enum
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{
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CD_SUB_NORMAL = 0, /* "cooked" 96 bytes per sector */
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CD_SUB_RAW, /* raw uninterleaved 96 bytes per sector */
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CD_SUB_NONE /* no subcode data stored */
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};
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#define CD_FLAG_GDROM 0x00000001 /* disc is a GD-ROM, all tracks should be stored with GD-ROM metadata */
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#define CD_FLAG_GDROMLE 0x00000002 /* legacy GD-ROM, with little-endian CDDA data */
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/***************************************************************************
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FUNCTION PROTOTYPES
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***************************************************************************/
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#ifdef WANT_RAW_DATA_SECTOR
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/* ECC utilities */
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int ecc_verify(const uint8_t *sector);
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void ecc_generate(uint8_t *sector);
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void ecc_clear(uint8_t *sector);
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#endif
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#endif /* __CDROM_H__ */
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