/* $Id: sector.h,v 1.2 2004/04/11 12:20:31 miguelfreitas Exp $ Copyright (C) 2000 Herbert Valerio Riedel Copyright (C) 2003 Rocky Bernstein 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 */ /*! \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 #define CDIO_PREGAP_SECTORS 150 #define CDIO_POSTGAP_SECTORS 150 /* 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__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 /*! 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 lba); /*! Convert an LBA into the corresponding LSN. */ lba_t cdio_lba_to_lsn (lba_t lba); /*! Convert an LBA into the corresponding MSF. */ void cdio_lba_to_msf(lba_t lba, msf_t *msf); /*! Convert an LSN into the corresponding LBA. */ lba_t cdio_lsn_to_lba (lsn_t lsn); /*! Convert an LSN into the corresponding MSF. */ void cdio_lsn_to_msf (lsn_t lsn, msf_t *msf); /*! Convert a MSF into the corresponding LBA. */ lba_t cdio_msf_to_lba (const msf_t *msf); /*! Convert a MSF into the corresponding LSN. */ 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: */