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/*
$Id: sector.h,v 1.38 2008/03/25 15:59:09 karl Exp $
Copyright (C) 2003, 2004, 2005, 2006, 2008 Rocky Bernstein <rocky@gnu.org>
Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
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 3 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, see <http://www.gnu.org/licenses/>.
*/
/*!
\file sector.h
\brief Things related to CD-ROM layout: tracks, sector sizes, MSFs, LBAs.
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:
\verbatim
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 |
\endverbatim
*/
#ifndef _CDIO_SECTOR_H_
#define _CDIO_SECTOR_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <cdio/types.h>
/*! Information that can be obtained through a Read Subchannel
command.
*/
#define CDIO_SUBCHANNEL_SUBQ_DATA 0
#define CDIO_SUBCHANNEL_CURRENT_POSITION 1
#define CDIO_SUBCHANNEL_MEDIA_CATALOG 2
#define CDIO_SUBCHANNEL_TRACK_ISRC 3
/*! track flags
* Q Sub-channel Control Field (4.2.3.3)
*/
typedef enum {
NONE = 0x00, /* no flags set */
PRE_EMPHASIS = 0x01, /* audio track recorded with pre-emphasis */
COPY_PERMITTED = 0x02, /* digital copy permitted */
DATA = 0x04, /* data track */
FOUR_CHANNEL_AUDIO = 0x08, /* 4 audio channels */
SCMS = 0x10 /* SCMS (5.29.2.7) */
} flag_t;
#define CDIO_PREGAP_SECTORS 150
#define CDIO_POSTGAP_SECTORS 150
/*! An enumeration for some of the CDIO_CD \#defines below. This isn't
really an enumeration one would really use in a program it is to
be helpful in debuggers where wants just to refer to the CDIO_CD_
names and get something.
*/
extern enum cdio_cd_enums {
CDIO_CD_MINS = 74, /**< max. minutes per CD, not really
a limit */
CDIO_CD_SECS_PER_MIN = 60, /**< seconds per minute */
CDIO_CD_FRAMES_PER_SEC = 75, /**< frames per second */
CDIO_CD_SYNC_SIZE = 12, /**< 12 sync bytes per raw data
frame */
CDIO_CD_CHUNK_SIZE = 24, /**< lowest-level "data bytes
piece" */
CDIO_CD_NUM_OF_CHUNKS = 98, /**< chunks per frame */
CDIO_CD_FRAMESIZE_SUB = 96, /**< subchannel data "frame" size */
CDIO_CD_HEADER_SIZE = 4, /**< header (address) bytes per raw
frame */
CDIO_CD_SUBHEADER_SIZE = 8, /**< subheader bytes per raw XA data
frame */
CDIO_CD_ECC_SIZE = 276, /**< bytes ECC per most raw data
frame types */
CDIO_CD_FRAMESIZE = 2048, /**< bytes per frame, "cooked"
mode */
CDIO_CD_FRAMESIZE_RAW = 2352, /**< bytes per frame, "raw" mode */
CDIO_CD_FRAMESIZE_RAWER = 2646, /**< The maximum possible
returned */
CDIO_CD_FRAMESIZE_RAW1 = 2340,
CDIO_CD_FRAMESIZE_RAW0 = 2336,
CDIO_CD_MAX_SESSIONS = 99,
CDIO_CD_MIN_SESSION_NO = 1, /**<, Smallest CD session number */
CDIO_CD_MAX_LSN = 450150, /**< Largest LSN in a CD */
CDIO_CD_MIN_LSN = -450150, /**< Smallest LSN in a CD */
} cdio_cd_enums;
/*!
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 (CDIO_CD_CD_FRAMESIZE_RAW-CDIO_CD_SYNC_SIZE) /*2340*/
#define CDIO_CD_FRAMESIZE_RAW0 (CDIO_CD_FRAMESIZE_RAW-CDIO_CD_SYNC_SIZE-CDIO_CD_HEADER_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)
/*! String of bytes used to identify the beginning of a Mode 1 or
Mode 2 sector. */
extern const uint8_t CDIO_SECTOR_SYNC_HEADER[CDIO_CD_SYNC_SIZE];
/**<
{0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0};
*/
/*! An enumeration for some of the M2*_SECTOR_SIZE \#defines
below. This isn't really an enumeration one would really use in a
program it is to be helpful in debuggers where wants just to refer
to the M2*_SECTOR_SIZE names and get something.
*/
extern enum m2_sector_enums {
M2F2_SECTOR_SIZE = 2324,
M2SUB_SECTOR_SIZE = 2332,
M2RAW_SECTOR_SIZE = 2336
} m2_sector_enums;
#define M2F2_SECTOR_SIZE 2324
#define M2SUB_SECTOR_SIZE 2332
#define M2RAW_SECTOR_SIZE 2336
/*! Largest CD session number */
#define CDIO_CD_MAX_SESSIONS 99
/*! Smallest CD session number */
#define CDIO_CD_MIN_SESSION_NO 1
/*! Largest LSN in a CD */
#define CDIO_CD_MAX_LSN 450150
/*! Smallest LSN in a CD */
#define CDIO_CD_MIN_LSN -450150
#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
/*!
Convert an LBA into a string representation of the MSF.
\warning cdio_lba_to_msf_str returns new allocated string */
char *cdio_lba_to_msf_str (lba_t i_lba);
/*!
Convert an MSF into a string representation of the MSF.
\warning cdio_msf_to_msf_str returns new allocated string */
char *cdio_msf_to_str (const msf_t *p_msf);
/*!
Convert an LBA into the corresponding LSN.
*/
lba_t cdio_lba_to_lsn (lba_t i_lba);
/*!
Convert an LBA into the corresponding MSF.
*/
void cdio_lba_to_msf(lba_t i_lba, msf_t *p_msf);
/*!
Convert an LSN into the corresponding LBA.
CDIO_INVALID_LBA is returned if there is an error.
*/
lba_t cdio_lsn_to_lba (lsn_t i_lsn);
/*!
Convert an LSN into the corresponding MSF.
*/
void cdio_lsn_to_msf (lsn_t i_lsn, msf_t *p_msf);
/*!
Convert a MSF into the corresponding LBA.
CDIO_INVALID_LBA is returned if there is an error.
*/
lba_t cdio_msf_to_lba (const msf_t *p_msf);
/*!
Convert a MSF into the corresponding LSN.
CDIO_INVALID_LSN is returned if there is an error.
*/
lsn_t cdio_msf_to_lsn (const msf_t *p_msf);
/*!
Convert a MSF - broken out as 3 integer components into the
corresponding LBA.
CDIO_INVALID_LBA is returned if there is an error.
*/
lba_t cdio_msf3_to_lba (unsigned int minutes, unsigned int seconds,
unsigned int frames);
/*!
Convert a string of the form MM:SS:FF into the corresponding LBA.
CDIO_INVALID_LBA is returned if there is an error.
*/
lba_t cdio_mmssff_to_lba (const char *psz_mmssff);
#ifdef __cplusplus
}
#endif
#ifndef DO_NOT_WANT_PARANOIA_COMPATIBILITY
/** For compatibility with good ol' paranoia */
#define CD_FRAMESIZE_RAW CDIO_CD_FRAMESIZE_RAW
#endif /*DO_NOT_WANT_PARANOIA_COMPATIBILITY*/
#endif /* _CDIO_SECTOR_H_ */
/*
* Local variables:
* c-file-style: "gnu"
* tab-width: 8
* indent-tabs-mode: nil
* End:
*/
|
