diff options
Diffstat (limited to 'src/input/vcd/libcdio/_cdio_bsdi.c')
| -rw-r--r-- | src/input/vcd/libcdio/_cdio_bsdi.c | 710 |
1 files changed, 710 insertions, 0 deletions
diff --git a/src/input/vcd/libcdio/_cdio_bsdi.c b/src/input/vcd/libcdio/_cdio_bsdi.c new file mode 100644 index 000000000..c3770b592 --- /dev/null +++ b/src/input/vcd/libcdio/_cdio_bsdi.c @@ -0,0 +1,710 @@ +/* + $Id: _cdio_bsdi.c,v 1.1 2003/10/13 11:47:11 f1rmb Exp $ + + Copyright (C) 2001 Herbert Valerio Riedel <hvr@gnu.org> + Copyright (C) 2002,2003 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 +*/ + +/* This file contains BSDI-specific code and implements low-level + control of the CD drive. +*/ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +static const char _rcsid[] = "$Id: _cdio_bsdi.c,v 1.1 2003/10/13 11:47:11 f1rmb Exp $"; + +#include <cdio/sector.h> +#include <cdio/util.h> +#include "cdio_assert.h" +#include "cdio_private.h" + +#define DEFAULT_CDIO_DEVICE "/dev/rsr0c" +#include <string.h> + +#ifdef HAVE_BSDI_CDROM + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> + +/*#define USE_ETC_FSTAB*/ +#ifdef USE_ETC_FSTAB +#include <fstab.h> +#endif + +#include <dvd.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/ioctl.h> + +#define TOTAL_TRACKS (_obj->tochdr.cdth_trk1) +#define FIRST_TRACK_NUM (_obj->tochdr.cdth_trk0) + +typedef struct { + /* Things common to all drivers like this. + This must be first. */ + generic_img_private_t gen; + + enum { + _AM_NONE, + _AM_IOCTL, + } access_mode; + + char *source_name; + + bool init; + + /* Track information */ + bool toc_init; /* if true, info below is valid. */ + struct cdrom_tochdr tochdr; + struct cdrom_tocentry tocent[100]; /* entry info for each track */ + +} _img_private_t; + +/* Check a drive to see if it is a CD-ROM + Return 1 if a CD-ROM. 0 if it exists but isn't a CD-ROM drive + and -1 if no device exists . +*/ +static bool +cdio_is_cdrom(char *drive, char *mnttype) +{ + bool is_cd=false; + int cdfd; + struct cdrom_tochdr tochdr; + + /* If it doesn't exist, return -1 */ + if ( !cdio_is_device_quiet_generic(drive) ) { + return(false); + } + + /* If it does exist, verify that it's an available CD-ROM */ + cdfd = open(drive, (O_RDONLY|O_EXCL|O_NONBLOCK), 0); + + /* Should we want to test the condition in more detail: + ENOENT is the error for /dev/xxxxx does not exist; + ENODEV means there's no drive present. */ + + if ( cdfd >= 0 ) { + if ( ioctl(cdfd, CDROMREADTOCHDR, &tochdr) != -1 ) { + is_cd = true; + } + close(cdfd); + } + /* Even if we can't read it, it might be mounted */ + else if ( mnttype && (strcmp(mnttype, "cd9660") == 0) ) { + is_cd = true; + } + return(is_cd); +} + +/*! + Initialize CD device. + */ +static bool +_cdio_init (_img_private_t *_obj) +{ + if (_obj->gen.init) { + cdio_error ("init called more than once"); + return false; + } + + _obj->gen.fd = open (_obj->source_name, O_RDONLY, 0); + + if (_obj->gen.fd < 0) + { + cdio_error ("open (%s): %s", _obj->source_name, strerror (errno)); + return false; + } + + _obj->gen.init = true; + _obj->toc_init = false; + return true; +} + +/* Read audio sectors +*/ +static int +_read_audio_sectors (void *env, void *data, lsn_t lsn, + unsigned int nblocks) +{ + char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, }; + struct cdrom_msf *msf = (struct cdrom_msf *) &buf; + msf_t _msf; + + _img_private_t *_obj = env; + + cdio_lba_to_msf (cdio_lsn_to_lba(lsn), &_msf); + msf->cdmsf_min0 = from_bcd8(_msf.m); + msf->cdmsf_sec0 = from_bcd8(_msf.s); + msf->cdmsf_frame0 = from_bcd8(_msf.f); + + if (_obj->gen.ioctls_debugged == 75) + cdio_debug ("only displaying every 75th ioctl from now on"); + + if (_obj->gen.ioctls_debugged == 30 * 75) + cdio_debug ("only displaying every 30*75th ioctl from now on"); + + if (_obj->gen.ioctls_debugged < 75 + || (_obj->gen.ioctls_debugged < (30 * 75) + && _obj->gen.ioctls_debugged % 75 == 0) + || _obj->gen.ioctls_debugged % (30 * 75) == 0) + cdio_debug ("reading %2.2d:%2.2d:%2.2d", + msf->cdmsf_min0, msf->cdmsf_sec0, msf->cdmsf_frame0); + + _obj->gen.ioctls_debugged++; + + switch (_obj->access_mode) { + case _AM_NONE: + cdio_error ("no way to read audio"); + return 1; + break; + + case _AM_IOCTL: { + unsigned int i; + for (i=0; i < nblocks; i++) { + if (ioctl (_obj->gen.fd, CDROMREADRAW, &buf) == -1) { + perror ("ioctl()"); + return 1; + /* exit (EXIT_FAILURE); */ + } + memcpy (((char *)data) + (CDIO_CD_FRAMESIZE_RAW * i), buf, + CDIO_CD_FRAMESIZE_RAW); + } + break; + } + } + + return 0; +} + +/*! + Reads a single mode2 sector from cd device into data starting + from lsn. Returns 0 if no error. + */ +static int +_cdio_read_mode2_sector (void *env, void *data, lsn_t lsn, + bool mode2_form2) +{ + char buf[M2RAW_SECTOR_SIZE] = { 0, }; + struct cdrom_msf *msf = (struct cdrom_msf *) &buf; + msf_t _msf; + + _img_private_t *_obj = env; + + cdio_lba_to_msf (cdio_lsn_to_lba(lsn), &_msf); + msf->cdmsf_min0 = from_bcd8(_msf.m); + msf->cdmsf_sec0 = from_bcd8(_msf.s); + msf->cdmsf_frame0 = from_bcd8(_msf.f); + + if (_obj->gen.ioctls_debugged == 75) + cdio_debug ("only displaying every 75th ioctl from now on"); + + if (_obj->gen.ioctls_debugged == 30 * 75) + cdio_debug ("only displaying every 30*75th ioctl from now on"); + + if (_obj->gen.ioctls_debugged < 75 + || (_obj->gen.ioctls_debugged < (30 * 75) + && _obj->gen.ioctls_debugged % 75 == 0) + || _obj->gen.ioctls_debugged % (30 * 75) == 0) + cdio_debug ("reading %2.2d:%2.2d:%2.2d", + msf->cdmsf_min0, msf->cdmsf_sec0, msf->cdmsf_frame0); + + _obj->gen.ioctls_debugged++; + + switch (_obj->access_mode) + { + case _AM_NONE: + cdio_error ("no way to read mode2"); + return 1; + break; + + case _AM_IOCTL: + if (ioctl (_obj->gen.fd, CDROMREADMODE2, &buf) == -1) + { + perror ("ioctl()"); + return 1; + /* exit (EXIT_FAILURE); */ + } + break; + } + + if (mode2_form2) + memcpy (data, buf, M2RAW_SECTOR_SIZE); + else + memcpy (((char *)data), buf + CDIO_CD_SUBHEADER_SIZE, CDIO_CD_FRAMESIZE); + + return 0; +} + +/*! + Reads nblocks of mode2 sectors from cd device into data starting + from lsn. + Returns 0 if no error. + */ +static int +_cdio_read_mode2_sectors (void *env, void *data, lsn_t lsn, + bool mode2_form2, unsigned int nblocks) +{ + _img_private_t *_obj = env; + int i; + int retval; + + for (i = 0; i < nblocks; i++) { + if (mode2_form2) { + if ( (retval = _cdio_read_mode2_sector (_obj, + ((char *)data) + (M2RAW_SECTOR_SIZE * i), + lsn + i, true)) ) + return retval; + } else { + char buf[M2RAW_SECTOR_SIZE] = { 0, }; + if ( (retval = _cdio_read_mode2_sector (_obj, buf, lsn + i, true)) ) + return retval; + + memcpy (((char *)data) + (CDIO_CD_FRAMESIZE * i), + buf + CDIO_CD_SUBHEADER_SIZE, CDIO_CD_FRAMESIZE); + } + } + return 0; +} + +/*! + Return the size of the CD in logical block address (LBA) units. + */ +static uint32_t +_cdio_stat_size (void *env) +{ + _img_private_t *_obj = env; + + struct cdrom_tocentry tocent; + uint32_t size; + + tocent.cdte_track = CDIO_CDROM_LEADOUT_TRACK; + tocent.cdte_format = CDROM_LBA; + if (ioctl (_obj->gen.fd, CDROMREADTOCENTRY, &tocent) == -1) + { + perror ("ioctl(CDROMREADTOCENTRY)"); + exit (EXIT_FAILURE); + } + + size = tocent.cdte_addr.lba; + + return size; +} + +/*! + Set the key "arg" to "value" in source device. +*/ +static int +_cdio_set_arg (void *env, const char key[], const char value[]) +{ + _img_private_t *_obj = env; + + if (!strcmp (key, "source")) + { + if (!value) + return -2; + + free (_obj->source_name); + + _obj->source_name = strdup (value); + } + else if (!strcmp (key, "access-mode")) + { + if (!strcmp(value, "IOCTL")) + _obj->access_mode = _AM_IOCTL; + else + cdio_error ("unknown access type: %s. ignored.", value); + } + else + return -1; + + return 0; +} + +/*! + Read and cache the CD's Track Table of Contents and track info. + Return false if successful or true if an error. +*/ +static bool +_cdio_read_toc (_img_private_t *_obj) +{ + int i; + + /* read TOC header */ + if ( ioctl(_obj->gen.fd, CDROMREADTOCHDR, &_obj->tochdr) == -1 ) { + cdio_error("%s: %s\n", + "error in ioctl CDROMREADTOCHDR", strerror(errno)); + return false; + } + + /* read individual tracks */ + for (i= FIRST_TRACK_NUM; i<=TOTAL_TRACKS; i++) { + _obj->tocent[i-1].cdte_track = i; + _obj->tocent[i-1].cdte_format = CDROM_MSF; + if ( ioctl(_obj->gen.fd, CDROMREADTOCENTRY, &_obj->tocent[i-1]) == -1 ) { + cdio_error("%s %d: %s\n", + "error in ioctl CDROMREADTOCENTRY for track", + i, strerror(errno)); + return false; + } + /**** + struct cdrom_msf0 *msf= &_obj->tocent[i-1].cdte_addr.msf; + + fprintf (stdout, "--- track# %d (msf %2.2x:%2.2x:%2.2x)\n", + i, msf->minute, msf->second, msf->frame); + ****/ + + } + + /* read the lead-out track */ + _obj->tocent[TOTAL_TRACKS].cdte_track = CDIO_CDROM_LEADOUT_TRACK; + _obj->tocent[TOTAL_TRACKS].cdte_format = CDROM_MSF; + + if (ioctl(_obj->gen.fd, CDROMREADTOCENTRY, + &_obj->tocent[TOTAL_TRACKS]) == -1 ) { + cdio_error("%s: %s\n", + "error in ioctl CDROMREADTOCENTRY for lead-out", + strerror(errno)); + return false; + } + + /* + struct cdrom_msf0 *msf= &_obj->tocent[TOTAL_TRACKS].cdte_addr.msf; + + fprintf (stdout, "--- track# %d (msf %2.2x:%2.2x:%2.2x)\n", + i, msf->minute, msf->second, msf->frame); + */ + + return true; +} + +/*! + Eject media in CD drive. If successful, as a side effect we + also free obj. + */ +static int +_cdio_eject_media (void *env) { + + _img_private_t *_obj = env; + int ret=2; + int status; + int fd; + + close(_obj->gen.fd); + _obj->gen.fd = -1; + if ((fd = open (_obj->source_name, O_RDONLY|O_NONBLOCK)) > -1) { + if((status = ioctl(fd, CDROM_DRIVE_STATUS, (void *) CDSL_CURRENT)) > 0) { + switch(status) { + case CDS_TRAY_OPEN: + if((ret = ioctl(fd, CDROMCLOSETRAY, 0)) != 0) { + cdio_error ("ioctl CDROMCLOSETRAY failed: %s\n", strerror(errno)); + } + break; + case CDS_DISC_OK: + if((ret = ioctl(fd, CDROMEJECT, 0)) != 0) { + cdio_error("ioctl CDROMEJECT failed: %s\n", strerror(errno)); + } + break; + } + ret=0; + } else { + cdio_error ("CDROM_DRIVE_STATUS failed: %s\n", strerror(errno)); + ret=1; + } + close(fd); + } + return 2; +} + +/*! + Return the value associated with the key "arg". +*/ +static const char * +_cdio_get_arg (void *env, const char key[]) +{ + _img_private_t *_obj = env; + + if (!strcmp (key, "source")) { + return _obj->source_name; + } else if (!strcmp (key, "access-mode")) { + switch (_obj->access_mode) { + case _AM_IOCTL: + return "ioctl"; + case _AM_NONE: + return "no access method"; + } + } + return NULL; +} + +/*! + Return the number of of the first track. + CDIO_INVALID_TRACK is returned on error. +*/ +static track_t +_cdio_get_first_track_num(void *env) +{ + _img_private_t *_obj = env; + + if (!_obj->toc_init) _cdio_read_toc (_obj) ; + + return FIRST_TRACK_NUM; +} + +/*! + Return the media catalog number MCN. + Note: string is malloc'd so caller should free() then returned + string when done with it. + */ +static char * +_cdio_get_mcn (void *env) { + + struct cdrom_mcn mcn; + _img_private_t *_obj = env; + if (ioctl(_obj->gen.fd, CDROM_GET_MCN, &mcn) != 0) + return NULL; + return strdup(mcn.medium_catalog_number); +} + +/*! + Return the number of tracks in the current medium. + CDIO_INVALID_TRACK is returned on error. +*/ +static track_t +_cdio_get_num_tracks(void *env) +{ + _img_private_t *_obj = env; + + if (!_obj->toc_init) _cdio_read_toc (_obj) ; + + return TOTAL_TRACKS; +} + +/*! + Get format of track. +*/ +static track_format_t +_cdio_get_track_format(void *env, track_t track_num) +{ + _img_private_t *_obj = env; + + if (!_obj->toc_init) _cdio_read_toc (_obj) ; + + if (track_num > TOTAL_TRACKS || track_num == 0) + return TRACK_FORMAT_ERROR; + + /* This is pretty much copied from the "badly broken" cdrom_count_tracks + in linux/cdrom.c. + */ + if (_obj->tocent[track_num-1].cdte_ctrl & CDROM_DATA_TRACK) { + if (_obj->tocent[track_num-1].cdte_format == 0x10) + return TRACK_FORMAT_CDI; + else if (_obj->tocent[track_num-1].cdte_format == 0x20) + return TRACK_FORMAT_XA; + else + return TRACK_FORMAT_DATA; + } else + return TRACK_FORMAT_AUDIO; + +} + +/*! + Return true if we have XA data (green, mode2 form1) or + XA data (green, mode2 form2). That is track begins: + sync - header - subheader + 12 4 - 8 + + FIXME: there's gotta be a better design for this and get_track_format? +*/ +static bool +_cdio_get_track_green(void *env, track_t track_num) +{ + _img_private_t *_obj = env; + + if (!_obj->toc_init) _cdio_read_toc (_obj) ; + + if (track_num == CDIO_CDROM_LEADOUT_TRACK) track_num = TOTAL_TRACKS+1; + + if (track_num > TOTAL_TRACKS+1 || track_num == 0) + return false; + + /* FIXME: Dunno if this is the right way, but it's what + I was using in cdinfo for a while. + */ + return ((_obj->tocent[track_num-1].cdte_ctrl & 2) != 0); +} + +/*! + Return the starting MSF (minutes/secs/frames) for track number + track_num in obj. Track numbers start at 1. + The "leadout" track is specified either by + using track_num LEADOUT_TRACK or the total tracks+1. + False is returned if there is no track entry. +*/ +static bool +_cdio_get_track_msf(void *env, track_t track_num, msf_t *msf) +{ + _img_private_t *_obj = env; + + if (NULL == msf) return false; + + if (!_obj->toc_init) _cdio_read_toc (_obj) ; + + if (track_num == CDIO_CDROM_LEADOUT_TRACK) track_num = TOTAL_TRACKS+1; + + if (track_num > TOTAL_TRACKS+1 || track_num == 0) { + return false; + } else { + struct cdrom_msf0 *msf0= &_obj->tocent[track_num-1].cdte_addr.msf; + msf->m = to_bcd8(msf0->minute); + msf->s = to_bcd8(msf0->second); + msf->f = to_bcd8(msf0->frame); + return true; + } +} + +#endif /* HAVE_BSDI_CDROM */ + +/*! + Return an array of strings giving possible CD devices. + */ +char ** +cdio_get_devices_bsdi (void) +{ +#ifndef HAVE_BSDI_CDROM + return NULL; +#else + char drive[40]; + char **drives = NULL; + unsigned int num_drives=0; + bool exists=true; + char c; + + /* Scan the system for CD-ROM drives. + */ + +#ifdef USE_ETC_FSTAB + + struct fstab *fs; + setfsent(); + + /* Check what's in /etc/fstab... */ + while ( (fs = getfsent()) ) + { + if (strncmp(fs->fs_spec, "/dev/sr", 7)) + cdio_add_device_list(&drives, fs->fs_spec, &num_drives); + } + +#endif + + /* Scan the system for CD-ROM drives. + Not always 100% reliable, so use the USE_MNTENT code above first. + */ + for ( c='0'; exists && c <='9'; c++ ) { + sprintf(drive, "/dev/rsr%cc", c); + exists = cdio_is_cdrom(drive, NULL); + if ( exists ) { + cdio_add_device_list(&drives, drive, &num_drives); + } + } + cdio_add_device_list(&drives, NULL, &num_drives); + return drives; +#endif /*HAVE_BSDI_CDROM*/ +} + +/*! + Return a string containing the default CD device if none is specified. + */ +char * +cdio_get_default_device_bsdi(void) +{ + return strdup(DEFAULT_CDIO_DEVICE); +} + +/*! + Initialization routine. This is the only thing that doesn't + get called via a function pointer. In fact *we* are the + ones to set that up. + */ +CdIo * +cdio_open_bsdi (const char *source_name) +{ + +#ifdef HAVE_BSDI_CDROM + CdIo *ret; + _img_private_t *_data; + + cdio_funcs _funcs = { + .eject_media = _cdio_eject_media, + .free = cdio_generic_free, + .get_arg = _cdio_get_arg, + .get_default_device = cdio_get_default_device_bsdi, + .get_devices = cdio_get_devices_bsdi, + .get_first_track_num= _cdio_get_first_track_num, + .get_mcn = _cdio_get_mcn, + .get_num_tracks = _cdio_get_num_tracks, + .get_track_format = _cdio_get_track_format, + .get_track_green = _cdio_get_track_green, + .get_track_lba = NULL, /* This could be implemented if need be. */ + .get_track_msf = _cdio_get_track_msf, + .lseek = cdio_generic_lseek, + .read = cdio_generic_read, + .read_mode2_sector = _cdio_read_mode2_sector, + .read_audio_sectors = _read_audio_sectors, + .read_mode2_sectors = _cdio_read_mode2_sectors, + .set_arg = _cdio_set_arg, + .stat_size = _cdio_stat_size + }; + + _data = _cdio_malloc (sizeof (_img_private_t)); + _data->access_mode = _AM_IOCTL; + _data->gen.init = false; + _data->gen.fd = -1; + + _cdio_set_arg(_data, "source", (NULL == source_name) + ? DEFAULT_CDIO_DEVICE: source_name); + + ret = cdio_new (_data, &_funcs); + if (ret == NULL) return NULL; + + if (_cdio_init(_data)) + return ret; + else { + cdio_generic_free (_data); + return NULL; + } + +#else + return NULL; +#endif /* HAVE_BSDI_CDROM */ + +} + +bool +cdio_have_bsdi (void) +{ +#ifdef HAVE_BSDI_CDROM + return true; +#else + return false; +#endif /* HAVE_BSDI_CDROM */ +} + |