213 lines
6.6 KiB
C
213 lines
6.6 KiB
C
/*
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$Id: sector.h,v 1.4 2003/04/06 06:43:32 rocky Exp $
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Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
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Copyright (C) 2003 Rocky Bernstein <rocky@panix.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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Things related to CDROM layout. Sector sizes, MSFs, LBAs,
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*/
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#ifndef _CDIO_SECTOR_H_
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#define _CDIO_SECTOR_H_
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#include "types.h"
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#define CDIO_PREGAP_SECTORS 150
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#define CDIO_POSTGAP_SECTORS 150
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/*
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* A CD-ROM physical sector size is 2048, 2052, 2056, 2324, 2332, 2336,
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* 2340, or 2352 bytes long.
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* Sector types of the standard CD-ROM data formats:
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*
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* format sector type user data size (bytes)
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* -----------------------------------------------------------------------------
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* 1 (Red Book) CD-DA 2352 (CD-FRAMESIZE_RAW)
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* 2 (Yellow Book) Mode1 Form1 2048 (M1F1_SECTOR_SIZE)
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* 3 (Yellow Book) Mode1 Form2 2336 (M2RAW_SECTOR_SIZE)
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* 4 (Green Book) Mode2 Form1 2048 (M2F1_SECTOR_SIZE)
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* 5 (Green Book) Mode2 Form2 2328 (2324+4 spare bytes)
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*
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*
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* The layout of the standard CD-ROM data formats:
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* -----------------------------------------------------------------------------
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* - audio (red): | audio_sample_bytes |
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* | 2352 |
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*
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* - data (yellow, mode1): | sync - head - data - EDC - zero - ECC |
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* | 12 - 4 - 2048 - 4 - 8 - 276 |
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*
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* - data (yellow, mode2): | sync - head - data |
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* | 12 - 4 - 2336 |
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*
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* - XA data (green, mode2 form1): | sync - head - sub - data - EDC - ECC |
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* | 12 - 4 - 8 - 2048 - 4 - 276 |
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*
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* - XA data (green, mode2 form2): | sync - head - sub - data - Spare |
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* | 12 - 4 - 8 - 2324 - 4 |
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*
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*/
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/*
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Some generally useful CD-ROM information -- mostly based on the above.
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This is from linux.h - not to slight other OS's. This was the first
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place I came across such useful stuff.
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*/
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#ifndef CD_MINS
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#define CD_MINS 74 /* max. minutes per CD, not really a limit */
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#endif
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#ifndef CD_SECS
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#define CD_SECS 60 /* seconds per minute */
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#endif
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#ifndef CD_FRAMES
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#define CD_FRAMES 75 /* frames per second */
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#endif
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#ifndef CD_SYNC_SIZE
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#define CD_SYNC_SIZE 12 /* 12 sync bytes per raw data frame */
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#endif
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#ifndef CD_MSF_OFFSET
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#define CD_MSF_OFFSET 150 /* MSF numbering offset of first frame */
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#endif
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#ifndef CD_CHUNK_SIZE
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#define CD_CHUNK_SIZE 24 /* lowest-level "data bytes piece" */
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#endif
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#ifndef CD_NUM_OF_CHUNKS
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#define CD_NUM_OF_CHUNKS 98 /* chunks per frame */
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#endif
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#ifndef CD_FRAMESIZE_SUB
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#define CD_FRAMESIZE_SUB 96 /* subchannel data "frame" size */
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#endif
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#ifndef CD_HEAD_SIZE
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#define CD_HEAD_SIZE 4 /* header (address) bytes per raw data frame */
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#endif
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#ifndef CD_SUBHEAD_SIZE
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#define CD_SUBHEAD_SIZE 8 /* subheader bytes per raw XA data frame */
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#endif
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#ifndef CD_EDC_SIZE
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#define CD_EDC_SIZE 4 /* bytes EDC per most raw data frame types */
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#endif
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#ifndef CD_ZERO_SIZE
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#define CD_ZERO_SIZE 8 /* bytes zero per yellow book mode 1 frame */
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#endif
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#ifndef CD_ECC_SIZE
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#define CD_ECC_SIZE 276 /* bytes ECC per most raw data frame types */
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#endif
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#ifndef CD_FRAMESIZE
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#define CD_FRAMESIZE 2048 /* bytes per frame, "cooked" mode */
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#endif
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#ifndef CD_FRAMESIZE_RAW
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#define CD_FRAMESIZE_RAW 2352 /* bytes per frame, "raw" mode */
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#endif
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#ifndef CD_FRAMESIZE_RAWER
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#define CD_FRAMESIZE_RAWER 2646 /* The maximum possible returned bytes */
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#endif
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/* most drives don't deliver everything: */
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#ifndef CD_FRAMESIZE_RAW1
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#define CD_FRAMESIZE_RAW1 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE) /*2340*/
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#endif
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#ifndef CD_FRAMESIZE_RAW0
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#define CD_FRAMESIZE_RAW0 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE-CD_HEAD_SIZE) /*2336*/
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#endif
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#ifndef CD_XA_HEAD
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#define CD_XA_HEAD (CD_HEAD_SIZE+CD_SUBHEAD_SIZE) /* "before data" part of raw XA frame */
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#endif
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#ifndef CD_XA_TAIL
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#define CD_XA_TAIL (CD_EDC_SIZE+CD_ECC_SIZE) /* "after data" part of raw XA frame */
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#endif
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#ifndef CD_XA_SYNC_HEAD
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#define CD_XA_SYNC_HEAD (CD_SYNC_SIZE+CD_XA_HEAD) /* sync bytes + header of XA frame */
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#endif
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/* CD-ROM address types (cdrom_tocentry.cdte_format) */
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#ifndef CDROM_LBA
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#define CDROM_LBA 0x01 /* "logical block": first frame is #0 */
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#endif
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#ifndef CDROM_MSF
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#define CDROM_MSF 0x02 /* "minute-second-frame": binary, not bcd here! */
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#endif
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/* bit to tell whether track is data or audio (cdrom_tocentry.cdte_ctrl) */
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#ifndef CDROM_DATA_TRACK
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#define CDROM_DATA_TRACK 0x04
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#endif
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/* The leadout track is always 0xAA, regardless of # of tracks on disc */
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#ifndef CDROM_LEADOUT
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#define CDROM_LEADOUT 0xAA
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#endif
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#define M1F1_SECTOR_SIZE 2048
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#define M2F1_SECTOR_SIZE 2048
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#define FORM1_DATA_SIZE 2048 /* Mode 1 or Mode 2 user data */
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#define M2F2_SECTOR_SIZE 2324
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#define M2SUB_SECTOR_SIZE 2332
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#define M2RAW_SECTOR_SIZE 2336
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#define CD_MAX_TRACKS 99
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#define CD_FRAMES_PER_SECOND 75
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#define CD_FRAMES_PER_MINUTE (60*(CD_FRAMES_PER_SECOND))
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#define CD_74MIN_SECTORS (UINT32_C(74)*CD_FRAMES_PER_MINUTE)
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#define CD_80MIN_SECTORS (UINT32_C(80)*CD_FRAMES_PER_MINUTE)
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#define CD_90MIN_SECTORS (UINT32_C(90)*CD_FRAMES_PER_MINUTE)
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#define CD_MAX_SECTORS (UINT32_C(100)*CD_FRAMES_PER_MINUTE-CDIO_PREGAP_SECTORS)
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#define msf_t_SIZEOF 3
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/* warning, returns new allocated string */
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char *
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cdio_lba_to_msf_str (lba_t lba);
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static inline lba_t
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cdio_lba_to_lsn (lba_t lba)
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{
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return lba - CDIO_PREGAP_SECTORS;
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}
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void
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cdio_lba_to_msf(lba_t lba, msf_t *msf);
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static inline lba_t
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cdio_lsn_to_lba (lsn_t lsn)
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{
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return lsn + CDIO_PREGAP_SECTORS;
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}
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void
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cdio_lsn_to_msf (lsn_t lsn, msf_t *msf);
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uint32_t
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cdio_msf_to_lba (const msf_t *msf);
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uint32_t
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cdio_msf_to_lsn (const msf_t *msf);
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#endif /* _CDIO_SECTOR_H_ */
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/*
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* Local variables:
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* c-file-style: "gnu"
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*/
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