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/*
$Id: sector.h,v 1.1 2003/10/13 11:47:12 f1rmb Exp $
Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
Copyright (C) 2003 Rocky Bernstein <rocky@panix.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
Things related to CDROM layout. Sector sizes, MSFs, LBAs,
*/
#ifndef _CDIO_SECTOR_H_
#define _CDIO_SECTOR_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <cdio/types.h>
#define CDIO_PREGAP_SECTORS 150
#define CDIO_POSTGAP_SECTORS 150
/*
* A CD-ROM physical sector size is 2048, 2052, 2056, 2324, 2332, 2336,
* 2340, or 2352 bytes long.
* Sector types of the standard CD-ROM data formats:
*
* format sector type user data size (bytes)
* -----------------------------------------------------------------------------
* 1 (Red Book) CD-DA 2352 (CDIO_CD_FRAMESIZE_RAW)
* 2 (Yellow Book) Mode1 Form1 2048 (CDIO_CD_FRAMESIZE)
* 3 (Yellow Book) Mode1 Form2 2336 (M2RAW_SECTOR_SIZE)
* 4 (Green Book) Mode2 Form1 2048 (CDIO_CD_FRAMESIZE)
* 5 (Green Book) Mode2 Form2 2328 (2324+4 spare bytes)
*
*
* The layout of the standard CD-ROM data formats:
* -----------------------------------------------------------------------------
* - audio (red): | audio_sample_bytes |
* | 2352 |
*
* - data (yellow, mode1): | sync - head - data - EDC - zero - ECC |
* | 12 - 4 - 2048 - 4 - 8 - 276 |
*
* - data (yellow, mode2): | sync - head - data |
* | 12 - 4 - 2336 |
*
* - XA data (green, mode2 form1): | sync - head - sub - data - EDC - ECC |
* | 12 - 4 - 8 - 2048 - 4 - 276 |
*
* - XA data (green, mode2 form2): | sync - head - sub - data - Spare |
* | 12 - 4 - 8 - 2324 - 4 |
*
*/
/*
Some generally useful CD-ROM information -- mostly based on the above.
This is from linux.h - not to slight other OS's. This was the first
place I came across such useful stuff.
*/
#define CDIO_CD_MINS 74 /* max. minutes per CD, not really a limit */
#define CDIO_CD_SECS_PER_MIN 60 /* seconds per minute */
#define CDIO_CD_FRAMES_PER_SEC 75 /* frames per second */
#define CDIO_CD_SYNC_SIZE 12 /* 12 sync bytes per raw data frame */
#define CDIO_CD_CHUNK_SIZE 24 /* lowest-level "data bytes piece" */
#define CDIO_CD_NUM_OF_CHUNKS 98 /* chunks per frame */
#define CDIO_CD_FRAMESIZE_SUB 96 /* subchannel data "frame" size */
#define CDIO_CD_HEADER_SIZE 4 /* header (address) bytes per raw data
frame */
#define CDIO_CD_SUBHEADER_SIZE 8 /* subheader bytes per raw XA data frame */
#define CDIO_CD_EDC_SIZE 4 /* bytes EDC per most raw data frame types */
#define CDIO_CD_M1F1_ZERO_SIZE 8 /* bytes zero per yellow book mode 1 frame */
#define CDIO_CD_ECC_SIZE 276 /* bytes ECC per most raw data frame types */
#define CDIO_CD_FRAMESIZE 2048 /* bytes per frame, "cooked" mode */
#define CDIO_CD_FRAMESIZE_RAW 2352/* bytes per frame, "raw" mode */
#define CDIO_CD_FRAMESIZE_RAWER 2646 /* The maximum possible returned bytes */
#define CDIO_CD_FRAMESIZE_RAW1 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE) /*2340*/
#define CDIO_CD_FRAMESIZE_RAW0 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE-CD_HEAD_SIZE) /*2336*/
/* "before data" part of raw XA (green, mode2) frame */
#define CDIO_CD_XA_HEADER (CDIO_CD_HEADER_SIZE+CDIO_CD_SUBHEADER_SIZE)
/* "after data" part of raw XA (green, mode2 form1) frame */
#define CDIO_CD_XA_TAIL (CDIO_CD_EDC_SIZE+CDIO_CD_ECC_SIZE)
/* "before data" sync bytes + header of XA (green, mode2) frame */
#define CDIO_CD_XA_SYNC_HEADER (CDIO_CD_SYNC_SIZE+CDIO_CD_XA_HEADER)
/* CD-ROM address types (Linux cdrom_tocentry.cdte_format) */
#define CDIO_CDROM_LBA 0x01 /* "logical block": first frame is #0 */
#define CDIO_CDROM_MSF 0x02 /* "minute-second-frame": binary, not bcd here! */
#define CDIO_CDROM_DATA_TRACK 0x04
/* The leadout track is always 0xAA, regardless of # of tracks on disc */
#define CDIO_CDROM_LEADOUT_TRACK 0xAA
#define M2F2_SECTOR_SIZE 2324
#define M2SUB_SECTOR_SIZE 2332
#define M2RAW_SECTOR_SIZE 2336
#define CDIO_CD_MAX_TRACKS 99
#define CDIO_CD_MIN_TRACK_NO 1
#define CDIO_CD_FRAMES_PER_MIN \
(CDIO_CD_FRAMES_PER_SEC*CDIO_CD_SECS_PER_MIN)
#define CDIO_CD_74MIN_SECTORS (UINT32_C(74)*CDIO_CD_FRAMES_PER_MIN)
#define CDIO_CD_80MIN_SECTORS (UINT32_C(80)*CDIO_CD_FRAMES_PER_MIN)
#define CDIO_CD_90MIN_SECTORS (UINT32_C(90)*CDIO_CD_FRAMES_PER_MIN)
#define CDIO_CD_MAX_SECTORS \
(UINT32_C(100)*CDIO_CD_FRAMES_PER_MIN-CDIO_PREGAP_SECTORS)
#define msf_t_SIZEOF 3
/* warning, returns new allocated string */
char *cdio_lba_to_msf_str (lba_t lba);
lba_t cdio_lba_to_lsn (lba_t lba);
void cdio_lba_to_msf(lba_t lba, msf_t *msf);
lba_t cdio_lsn_to_lba (lsn_t lsn);
void cdio_lsn_to_msf (lsn_t lsn, msf_t *msf);
lba_t
cdio_msf_to_lba (const msf_t *msf);
lsn_t
cdio_msf_to_lsn (const msf_t *msf);
#ifdef __cplusplus
}
#endif
#endif /* _CDIO_SECTOR_H_ */
/*
* Local variables:
* c-file-style: "gnu"
* tab-width: 8
* indent-tabs-mode: nil
* End:
*/
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