summaryrefslogtreecommitdiff
path: root/src/input/vcd/libcdio/_cdio_bincue.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/input/vcd/libcdio/_cdio_bincue.c')
-rw-r--r--src/input/vcd/libcdio/_cdio_bincue.c962
1 files changed, 962 insertions, 0 deletions
diff --git a/src/input/vcd/libcdio/_cdio_bincue.c b/src/input/vcd/libcdio/_cdio_bincue.c
new file mode 100644
index 000000000..04293c483
--- /dev/null
+++ b/src/input/vcd/libcdio/_cdio_bincue.c
@@ -0,0 +1,962 @@
+/*
+ $Id: _cdio_bincue.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 code implements low-level access functions for a CD images
+ residing inside a disk file (*.bin) and its associated cue sheet.
+ (*.cue).
+*/
+
+static const char _rcsid[] = "$Id: _cdio_bincue.c,v 1.1 2003/10/13 11:47:11 f1rmb Exp $";
+
+#include "cdio_assert.h"
+#include "cdio_private.h"
+#include "_cdio_stdio.h"
+
+#include <cdio/logging.h>
+#include <cdio/sector.h>
+#include <cdio/util.h>
+
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#ifdef HAVE_GLOB_H
+#include <glob.h>
+#endif
+#include <ctype.h>
+
+/* FIXME: should put in a common definition somewhere. */
+#ifdef HAVE_BZERO
+#define BZERO(ptr, size) bzero(ptr, size)
+#elif HAVE_MEMSET
+#define BZERO(ptr, size) memset(ptr, 0, size)
+#else
+ Error -- you need either memset or bzero
+#endif
+
+/* reader */
+
+#define DEFAULT_CDIO_DEVICE "videocd.bin"
+#define DEFAULT_CDIO_CUE "videocd.cue"
+
+typedef struct {
+ track_t track_num; /* Probably is index+1 */
+ msf_t start_msf;
+ lba_t start_lba;
+ int start_index;
+ int sec_count; /* Number of sectors in this track. Does not
+ include pregap */
+ int num_indices;
+ int flags; /* "DCP", "4CH", "PRE" */
+ track_format_t track_format;
+ bool track_green;
+ uint16_t datasize; /* How much is in the portion we return back? */
+ uint16_t datastart; /* Offset from begining that data starts */
+ uint16_t endsize; /* How much stuff at the end to skip over. This
+ stuff may have error correction (EDC, or ECC).*/
+ uint16_t blocksize; /* total block size = start + size + end */
+
+
+} track_info_t;
+
+typedef struct {
+ /* Things common to all drivers like this.
+ This must be first. */
+ generic_img_private_t gen;
+ internal_position_t pos;
+
+ bool sector_2336; /* Playstation (PSX) uses 2336-byte sectors */
+
+ char *cue_name;
+ char *mcn; /* Media catalog number. */
+ track_info_t tocent[100]; /* entry info for each track */
+ track_t total_tracks; /* number of tracks in image */
+ track_t first_track_num; /* track number of first track */
+ bool have_cue;
+} _img_private_t;
+
+static bool _cdio_image_read_cue (_img_private_t *_obj);
+static uint32_t _cdio_stat_size (void *env);
+
+/*!
+ Initialize image structures.
+ */
+static bool
+_cdio_init (_img_private_t *_obj)
+{
+ lsn_t lead_lsn;
+
+ if (_obj->gen.init)
+ return false;
+
+ if (!(_obj->gen.data_source = cdio_stdio_new (_obj->gen.source_name))) {
+ cdio_error ("init failed");
+ return false;
+ }
+
+ /* Have to set init before calling _cdio_stat_size() or we will
+ get into infinite recursion calling passing right here.
+ */
+ _obj->gen.init = true;
+
+ lead_lsn = _cdio_stat_size( (_img_private_t *) _obj);
+
+ if (-1 == lead_lsn)
+ return false;
+
+ /* Read in CUE sheet. */
+ if ((_obj->cue_name != NULL)) {
+ _obj->have_cue = _cdio_image_read_cue(_obj);
+ }
+
+ if (!_obj->have_cue ) {
+ /* Time to fake things...
+ Make one big track, track 0 and 1 are the same.
+ We are guessing stuff starts at msf 00:04:00 - 2 for the 150
+ sector pregap and 2 for the cue information.
+ */
+ track_info_t *this_track=&(_obj->tocent[0]);
+ int blocksize = _obj->sector_2336
+ ? M2RAW_SECTOR_SIZE : CDIO_CD_FRAMESIZE_RAW;
+
+ _obj->total_tracks = 2;
+ _obj->first_track_num = 1;
+ this_track->start_msf.m = to_bcd8(0);
+ this_track->start_msf.s = to_bcd8(4);
+ this_track->start_msf.f = to_bcd8(0);
+ this_track->start_lba = cdio_msf_to_lba(&this_track->start_msf);
+ this_track->blocksize = blocksize;
+ this_track->track_format= TRACK_FORMAT_XA;
+ this_track->track_green = true;
+
+
+ _obj->tocent[1] = _obj->tocent[0];
+ }
+
+ /* Fake out leadout track and sector count for last track*/
+ cdio_lsn_to_msf (lead_lsn, &_obj->tocent[_obj->total_tracks].start_msf);
+ _obj->tocent[_obj->total_tracks].start_lba = cdio_lsn_to_lba(lead_lsn);
+ _obj->tocent[_obj->total_tracks-1].sec_count =
+ cdio_lsn_to_lba(lead_lsn - _obj->tocent[_obj->total_tracks-1].start_lba);
+
+ return true;
+}
+
+/*!
+ Reads into buf the next size bytes.
+ Returns -1 on error.
+ Would be libc's seek() but we have to adjust for the extra track header
+ information in each sector.
+*/
+static off_t
+_cdio_lseek (void *env, off_t offset, int whence)
+{
+ _img_private_t *_obj = env;
+
+ /* real_offset is the real byte offset inside the disk image
+ The number below was determined empirically. I'm guessing
+ the 1st 24 bytes of a bin file are used for something.
+ */
+ off_t real_offset=0;
+
+ unsigned int i;
+
+ _obj->pos.lba = 0;
+ for (i=0; i<_obj->total_tracks; i++) {
+ track_info_t *this_track=&(_obj->tocent[i]);
+ _obj->pos.index = i;
+ if ( (this_track->sec_count*this_track->datasize) >= offset) {
+ int blocks = offset / this_track->datasize;
+ int rem = offset % this_track->datasize;
+ int block_offset = blocks * this_track->blocksize;
+ real_offset += block_offset + rem;
+ _obj->pos.buff_offset = rem;
+ _obj->pos.lba += blocks;
+ break;
+ }
+ real_offset += this_track->sec_count*this_track->blocksize;
+ offset -= this_track->sec_count*this_track->datasize;
+ _obj->pos.lba += this_track->sec_count;
+ }
+
+ if (i==_obj->total_tracks) {
+ cdio_warn ("seeking outside range of disk image");
+ return -1;
+ } else {
+ real_offset += _obj->tocent[i].datastart;
+ return cdio_stream_seek(_obj->gen.data_source, real_offset, whence);
+ }
+}
+
+/*!
+ Reads into buf the next size bytes.
+ Returns -1 on error.
+ FIXME:
+ At present we assume a read doesn't cross sector or track
+ boundaries.
+*/
+static ssize_t
+_cdio_read (void *env, void *data, size_t size)
+{
+ _img_private_t *_obj = env;
+ char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, };
+ char *p = data;
+ ssize_t final_size=0;
+ ssize_t this_size;
+ track_info_t *this_track=&(_obj->tocent[_obj->pos.index]);
+ ssize_t skip_size = this_track->datastart + this_track->endsize;
+
+ while (size > 0) {
+ int rem = this_track->datasize - _obj->pos.buff_offset;
+ if (size <= rem) {
+ this_size = cdio_stream_read(_obj->gen.data_source, buf, size, 1);
+ final_size += this_size;
+ memcpy (p, buf, this_size);
+ break;
+ }
+
+ /* Finish off reading this sector. */
+ cdio_warn ("Reading across block boundaries not finished");
+
+ size -= rem;
+ this_size = cdio_stream_read(_obj->gen.data_source, buf, rem, 1);
+ final_size += this_size;
+ memcpy (p, buf, this_size);
+ p += this_size;
+ this_size = cdio_stream_read(_obj->gen.data_source, buf, rem, 1);
+
+ /* Skip over stuff at end of this sector and the beginning of the next.
+ */
+ cdio_stream_read(_obj->gen.data_source, buf, skip_size, 1);
+
+ /* Get ready to read another sector. */
+ _obj->pos.buff_offset=0;
+ _obj->pos.lba++;
+
+ /* Have gone into next track. */
+ if (_obj->pos.lba >= _obj->tocent[_obj->pos.index+1].start_lba) {
+ _obj->pos.index++;
+ this_track=&(_obj->tocent[_obj->pos.index]);
+ skip_size = this_track->datastart + this_track->endsize;
+ }
+ }
+ return final_size;
+}
+
+/*!
+ 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;
+ long size;
+ int blocksize = _obj->sector_2336
+ ? M2RAW_SECTOR_SIZE : CDIO_CD_FRAMESIZE_RAW;
+
+ _cdio_init (_obj);
+
+ size = cdio_stream_stat (_obj->gen.data_source);
+
+ if (size % blocksize)
+ {
+ cdio_warn ("image %s size (%ld) not multiple of blocksize (%d)",
+ _obj->gen.source_name, size, blocksize);
+ if (size % M2RAW_SECTOR_SIZE == 0)
+ cdio_warn ("this may be a 2336-type disc image");
+ else if (size % CDIO_CD_FRAMESIZE_RAW == 0)
+ cdio_warn ("this may be a 2352-type disc image");
+ /* exit (EXIT_FAILURE); */
+ }
+
+ size /= blocksize;
+
+ return size;
+}
+
+#define MAXLINE 512
+
+static bool
+_cdio_image_read_cue (_img_private_t *_obj)
+{
+ FILE *fp;
+ char line[MAXLINE];
+
+ int track_num;
+ int min,sec,frame;
+ int blocksize;
+ int start_index;
+ bool seen_first_index_for_track=false;
+
+ if ( _obj == NULL || _obj->cue_name == NULL ) return false;
+
+ fp = fopen (_obj->cue_name, "r");
+ if (fp == NULL) return false;
+
+ _obj->total_tracks=0;
+ _obj->first_track_num=1;
+ _obj->mcn=NULL;
+
+ while ((fgets(line, MAXLINE, fp)) != NULL) {
+ char s[80];
+ char *p;
+ /*printf("Retrieved line of length %zu :\n", read);
+ printf("%s", line); */
+ for (p=line; isspace(*p); p++) ;
+ if (1==sscanf(p, "FILE \"%80s[^\"]", s)) {
+ /* Should expand file name based on cue file basename.
+ free(_obj->bin_file);
+ _obj->bin_file = strdup(s);
+ */
+ /* printf("Found file name %s\n", s); */
+ } else if (1==sscanf(p, "CATALOG %80s", s)) {
+ _obj->mcn = strdup(s);
+ } else if (2==sscanf(p, "TRACK %d MODE2/%d", &track_num, &blocksize)) {
+ track_info_t *this_track=&(_obj->tocent[_obj->total_tracks]);
+ this_track->track_num = track_num;
+ this_track->num_indices = 0;
+ this_track->track_format= TRACK_FORMAT_XA;
+ this_track->track_green = true;
+ _obj->total_tracks++;
+ seen_first_index_for_track=false;
+ /*printf("Added track %d with blocksize %d\n", track_num, blocksize);*/
+
+ this_track->blocksize = blocksize;
+ switch(blocksize) {
+ case 2336:
+ this_track->datastart = CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE;
+ this_track->datasize = M2RAW_SECTOR_SIZE;
+ this_track->endsize = 0;
+ break;
+ default:
+ cdio_warn ("Unknown MODE2 size %d. Assuming 2352", blocksize);
+ case 2352:
+ if (_obj->sector_2336) {
+ this_track->datastart = 0;
+ this_track->datasize = M2RAW_SECTOR_SIZE;
+ this_track->endsize = blocksize - 2336;
+ } else {
+ this_track->datastart = CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE +
+ CDIO_CD_SUBHEADER_SIZE;
+ this_track->datasize = CDIO_CD_FRAMESIZE;
+ this_track->endsize = CDIO_CD_SYNC_SIZE + CDIO_CD_ECC_SIZE;
+ }
+ break;
+ }
+
+ } else if (2==sscanf(p, "TRACK %d MODE1/%d", &track_num, &blocksize)) {
+ track_info_t *this_track=&(_obj->tocent[_obj->total_tracks]);
+ this_track->blocksize = blocksize;
+ this_track->blocksize = blocksize;
+ switch(blocksize) {
+ case 2048:
+ /* Is the below correct? */
+ this_track->datastart = 0;
+ this_track->datasize = CDIO_CD_FRAMESIZE;
+ this_track->endsize = 0;
+ break;
+ default:
+ cdio_warn ("Unknown MODE1 size %d. Assuming 2352", blocksize);
+ case 2352:
+ this_track->datastart = CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE;
+ this_track->datasize = CDIO_CD_FRAMESIZE;
+ this_track->endsize = CDIO_CD_EDC_SIZE + CDIO_CD_M1F1_ZERO_SIZE
+ + CDIO_CD_ECC_SIZE;
+ }
+
+ this_track->track_num = track_num;
+ this_track->num_indices = 0;
+ this_track->track_format = TRACK_FORMAT_DATA;
+ this_track->track_green = false;
+ _obj->total_tracks++;
+ seen_first_index_for_track=false;
+ /*printf("Added track %d with blocksize %d\n", track_num, blocksize);*/
+
+ } else if (1==sscanf(p, "TRACK %d AUDIO", &track_num)) {
+ track_info_t *this_track=&(_obj->tocent[_obj->total_tracks]);
+ this_track->blocksize = CDIO_CD_FRAMESIZE_RAW;
+ this_track->datasize = CDIO_CD_FRAMESIZE_RAW;
+ this_track->datastart = 0;
+ this_track->endsize = 0;
+ this_track->track_num = track_num;
+ this_track->num_indices = 0;
+ this_track->track_format = TRACK_FORMAT_AUDIO;
+ this_track->track_green = false;
+ _obj->total_tracks++;
+ seen_first_index_for_track=false;
+
+ } else if (4==sscanf(p, "INDEX %d %d:%d:%d",
+ &start_index, &min, &sec, &frame)) {
+ track_info_t *this_track=&(_obj->tocent[_obj->total_tracks-1]);
+ /* FIXME! all of this is a big hack.
+ If start_index == 0, then this is the "last_cue" information.
+ The +2 below seconds is to adjust for the 150 pregap.
+ */
+ if (start_index != 0) {
+ if (!seen_first_index_for_track) {
+ this_track->start_index = start_index;
+ sec += 2;
+ if (sec >= 60) {
+ min++;
+ sec -= 60;
+ }
+ this_track->start_msf.m = to_bcd8 (min);
+ this_track->start_msf.s = to_bcd8 (sec);
+ this_track->start_msf.f = to_bcd8 (frame);
+ this_track->start_lba = cdio_msf_to_lba(&this_track->start_msf);
+ seen_first_index_for_track=true;
+ }
+
+ if (_obj->total_tracks > 1) {
+ /* Figure out number of sectors for previous track */
+ track_info_t *prev_track=&(_obj->tocent[_obj->total_tracks-2]);
+ if ( this_track->start_lba < prev_track->start_lba ) {
+ cdio_warn("track %d at LBA %lu starts before track %d at LBA %lu",
+ _obj->total_tracks,
+ (unsigned long int) this_track->start_lba,
+ _obj->total_tracks-1,
+ (unsigned long int) prev_track->start_lba);
+ prev_track->sec_count = 0;
+ } else if ( this_track->start_lba >= prev_track->start_lba
+ + CDIO_PREGAP_SECTORS ) {
+ prev_track->sec_count = this_track->start_lba -
+ prev_track->start_lba - CDIO_PREGAP_SECTORS ;
+ } else {
+ cdio_warn ("%lu fewer than pregap (%d) sectors in track %d",
+ (long unsigned int)
+ this_track->start_lba - prev_track->start_lba,
+ CDIO_PREGAP_SECTORS,
+ _obj->total_tracks-1);
+ /* Include pregap portion in sec_count. Maybe the pregap
+ was omitted. */
+ prev_track->sec_count = this_track->start_lba -
+ prev_track->start_lba;
+ }
+ }
+ this_track->num_indices++;
+ }
+ }
+ }
+ _obj->have_cue = _obj->total_tracks != 0;
+
+ fclose (fp);
+ return true;
+}
+
+/*!
+ Reads a single audio sector from CD device into data starting
+ from lsn. Returns 0 if no error.
+ */
+static int
+_cdio_read_audio_sectors (void *env, void *data, lsn_t lsn,
+ unsigned int nblocks)
+{
+ _img_private_t *_obj = env;
+ int ret;
+
+ _cdio_init (_obj);
+
+ /* Why the adjustment of 272, I don't know. It seems to work though */
+ if (lsn != 0) {
+ ret = cdio_stream_seek (_obj->gen.data_source,
+ (lsn * CDIO_CD_FRAMESIZE_RAW) - 272, SEEK_SET);
+ if (ret!=0) return ret;
+
+ ret = cdio_stream_read (_obj->gen.data_source, data,
+ CDIO_CD_FRAMESIZE_RAW, nblocks);
+ } else {
+ /* We need to pad out the first 272 bytes with 0's */
+ BZERO(data, 272);
+
+ ret = cdio_stream_seek (_obj->gen.data_source, 0, SEEK_SET);
+
+ if (ret!=0) return ret;
+
+ ret = cdio_stream_read (_obj->gen.data_source, (uint8_t *) data+272,
+ CDIO_CD_FRAMESIZE_RAW - 272, nblocks);
+ }
+
+ return ret;
+}
+
+/*!
+ 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)
+{
+ _img_private_t *_obj = env;
+ int ret;
+ char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, };
+ int blocksize = _obj->sector_2336
+ ? M2RAW_SECTOR_SIZE : CDIO_CD_FRAMESIZE_RAW;
+
+ _cdio_init (_obj);
+
+ ret = cdio_stream_seek (_obj->gen.data_source, lsn * blocksize, SEEK_SET);
+ if (ret!=0) return ret;
+
+ ret = cdio_stream_read (_obj->gen.data_source,
+ _obj->sector_2336
+ ? (buf + CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE)
+ : buf,
+ blocksize, 1);
+ if (ret==0) return ret;
+
+ if (mode2_form2)
+ memcpy (data, buf + CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE,
+ M2RAW_SECTOR_SIZE);
+ else
+ memcpy (data, buf + CDIO_CD_XA_SYNC_HEADER, 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, uint32_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;
+}
+
+#define free_if_notnull(obj) \
+ if (NULL != obj) free(obj);
+
+static void
+_cdio_bincue_free (void *env) {
+ _img_private_t *_obj = env;
+
+ if (NULL == _obj) return;
+ free_if_notnull(_obj->mcn);
+ cdio_generic_stream_free(_obj);
+}
+
+/*!
+ Set the arg "key" with "value" in the source device.
+ Currently "source" to set the source device in I/O operations
+ is the only valid key.
+
+ 0 is returned if no error was found, and nonzero if there as an error.
+*/
+/*!
+ Set the device to use in I/O operations.
+*/
+static int
+_cdio_set_arg (void *env, const char key[], const char value[])
+{
+ _img_private_t *_obj = env;
+
+ if (!strcmp (key, "source"))
+ {
+ free_if_notnull (_obj->gen.source_name);
+
+ if (!value)
+ return -2;
+
+ _obj->gen.source_name = strdup (value);
+ }
+ else if (!strcmp (key, "sector"))
+ {
+ if (!strcmp (value, "2336"))
+ _obj->sector_2336 = true;
+ else if (!strcmp (value, "2352"))
+ _obj->sector_2336 = false;
+ else
+ return -2;
+ }
+ else if (!strcmp (key, "cue"))
+ {
+ free_if_notnull (_obj->cue_name);
+
+ if (!value)
+ return -2;
+
+ _obj->cue_name = strdup (value);
+ }
+ else
+ return -1;
+
+ return 0;
+}
+
+/*!
+ 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->gen.source_name;
+ } else if (!strcmp (key, "cue")) {
+ return _obj->cue_name;
+ }
+ return NULL;
+}
+
+/*!
+ Return an array of strings giving possible NRG disk images.
+ */
+char **
+cdio_get_devices_bincue (void)
+{
+ char **drives = NULL;
+ unsigned int num_files=0;
+#ifdef HAVE_GLOB_H
+ unsigned int i;
+ glob_t globbuf;
+ globbuf.gl_offs = 0;
+ glob("*.cue", GLOB_DOOFFS, NULL, &globbuf);
+ for (i=0; i<globbuf.gl_pathc; i++) {
+ cdio_add_device_list(&drives, globbuf.gl_pathv[i], &num_files);
+ }
+ globfree(&globbuf);
+#else
+ cdio_add_device_list(&drives, DEFAULT_CDIO_DEVICE, &num_files);
+#endif /*HAVE_GLOB_H*/
+ cdio_add_device_list(&drives, NULL, &num_files);
+ return drives;
+}
+
+/*!
+ Return a string containing the default CD device.
+ */
+char *
+cdio_get_default_device_bincue(void)
+{
+ char **drives = cdio_get_devices_nrg();
+ char *drive = (drives[0] == NULL) ? NULL : strdup(drives[0]);
+ cdio_free_device_list(drives);
+ return drive;
+}
+
+/*!
+ 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;
+
+ _cdio_init (_obj);
+
+ return _obj->first_track_num;
+}
+
+/*!
+ Return the media catalog number (MCN) from the CD or NULL if there
+ is none or we don't have the ability to get it.
+
+ Note: string is malloc'd so caller has to free() the returned
+ string when done with it.
+ */
+static char *
+_cdio_get_mcn(void *env)
+{
+ _img_private_t *_obj = env;
+
+ _cdio_init (_obj);
+
+ if (NULL == _obj->mcn) return NULL;
+ return strdup(_obj->mcn);
+}
+
+/*!
+ Return the number of tracks in the current medium.
+ If no cuesheet is available, We fake it an just say there's
+ one big track.
+ CDIO_INVALID_TRACK is returned on error.
+*/
+static track_t
+_cdio_get_num_tracks(void *env)
+{
+ _img_private_t *_obj = env;
+ _cdio_init (_obj);
+
+ return _obj->have_cue && _obj->total_tracks > 0 ? _obj->total_tracks : 1;
+}
+
+/*!
+ Return the number of tracks in the current medium.
+ CDIO_INVALID_TRACK is returned on error.
+*/
+static track_format_t
+_cdio_get_track_format(void *env, track_t track_num)
+{
+ _img_private_t *_obj = env;
+
+ if (!_obj->gen.init) _cdio_init(_obj);
+
+ if (track_num > _obj->total_tracks || track_num == 0)
+ return TRACK_FORMAT_ERROR;
+
+ return _obj->tocent[track_num-1].track_format;
+}
+
+/*!
+ 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->gen.init) _cdio_init(_obj);
+
+ if (track_num > _obj->total_tracks || track_num == 0)
+ return false;
+
+ return _obj->tocent[track_num-1].track_green;
+}
+
+/*!
+ Return the starting LSN 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 lba_t
+_cdio_get_track_lba(void *env, track_t track_num)
+{
+ _img_private_t *_obj = env;
+ _cdio_init (_obj);
+
+ if (track_num == CDIO_CDROM_LEADOUT_TRACK) track_num = _obj->total_tracks+1;
+
+ if (track_num <= _obj->total_tracks+1 && track_num != 0) {
+ return _obj->tocent[track_num-1].start_lba;
+ } else
+ return CDIO_INVALID_LBA;
+}
+
+/*!
+ Return the starting MSF (minutes/secs/frames) for the track number
+ track_num in obj. Tracks numbers start at 1.
+ The "leadout" track is specified either by
+ using track_num LEADOUT_TRACK or the total tracks+1.
+
+*/
+static bool
+_cdio_get_track_msf(void *env, track_t track_num, msf_t *msf)
+{
+ _img_private_t *_obj = env;
+ _cdio_init (_obj);
+
+ if (NULL == msf) return false;
+
+ if (track_num == CDIO_CDROM_LEADOUT_TRACK) track_num = _obj->total_tracks+1;
+
+ if (track_num <= _obj->total_tracks+1 && track_num != 0) {
+ *msf = _obj->tocent[track_num-1].start_msf;
+ return true;
+ } else
+ return false;
+}
+
+/*!
+ Return corresponding BIN file if cue_name is a cue file or NULL
+ if not a CUE file.
+
+*/
+/* Later we'll probably parse the entire file. For now though, this gets us
+ started for now.
+*/
+char *
+cdio_is_cuefile(const char *cue_name)
+{
+ int i;
+ char *bin_name;
+
+ if (cue_name == NULL) return false;
+
+ bin_name=strdup(cue_name);
+ i=strlen(bin_name)-strlen("cue");
+
+ if (i>0) {
+ if (cue_name[i]=='c' && cue_name[i+1]=='u' && cue_name[i+2]=='e') {
+ bin_name[i++]='b'; bin_name[i++]='i'; bin_name[i++]='n';
+ return bin_name;
+ }
+ else if (cue_name[i]=='C' && cue_name[i+1]=='U' && cue_name[i+2]=='E') {
+ bin_name[i++]='B'; bin_name[i++]='I'; bin_name[i++]='N';
+ return bin_name;
+ }
+ }
+ free(bin_name);
+ return NULL;
+}
+
+/*!
+ Return corresponding CUE file if bin_name is a bin file or NULL
+ if not a BIN file.
+
+*/
+/* Later we'll probably do better. For now though, this gets us
+ started for now.
+*/
+char *
+cdio_is_binfile(const char *bin_name)
+{
+ int i;
+ char *cue_name;
+
+ if (bin_name == NULL) return false;
+
+ cue_name=strdup(bin_name);
+ i=strlen(bin_name)-strlen("bin");
+
+ if (i>0) {
+ if (bin_name[i]=='b' && bin_name[i+1]=='i' && bin_name[i+2]=='n') {
+ cue_name[i++]='c'; cue_name[i++]='u'; cue_name[i++]='e';
+ return cue_name;
+ }
+ else if (bin_name[i]=='B' && bin_name[i+1]=='I' && bin_name[i+2]=='N') {
+ cue_name[i++]='C'; cue_name[i++]='U'; cue_name[i++]='E';
+ return cue_name;
+ }
+ }
+ free(cue_name);
+ return NULL;
+}
+
+static CdIo *
+cdio_open_common (_img_private_t **_data)
+{
+ cdio_funcs _funcs = {
+ .eject_media = cdio_generic_bogus_eject_media,
+ .free = _cdio_bincue_free,
+ .get_arg = _cdio_get_arg,
+ .get_default_device = cdio_get_default_device_bincue,
+ .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 = _cdio_get_track_lba,
+ .get_track_msf = _cdio_get_track_msf,
+ .lseek = _cdio_lseek,
+ .read = _cdio_read,
+ .read_audio_sectors = _cdio_read_audio_sectors,
+ .read_mode2_sector = _cdio_read_mode2_sector,
+ .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)->gen.init = false;
+ (*_data)->sector_2336 = false;
+ (*_data)->cue_name = NULL;
+
+ return cdio_new (*_data, &_funcs);
+}
+
+CdIo *
+cdio_open_bincue (const char *source_name)
+{
+ char *bin_name = cdio_is_cuefile(source_name);
+
+ if (NULL != bin_name) {
+ return cdio_open_cue(source_name);
+ } else {
+ char *cue_name = cdio_is_binfile(source_name);
+ CdIo *cdio = cdio_open_cue(cue_name);
+ free(cue_name);
+ return cdio;
+ }
+}
+
+CdIo *
+cdio_open_cue (const char *cue_name)
+{
+ CdIo *ret;
+ _img_private_t *_data;
+ char *bin_name;
+
+ if (NULL == cue_name) return NULL;
+ ret = cdio_open_common(&_data);
+ if (ret == NULL) return NULL;
+
+ bin_name = cdio_is_cuefile(cue_name);
+
+ if (NULL == bin_name) {
+ cdio_error ("source name %s is not recognized as a CUE file", cue_name);
+ }
+
+ _cdio_set_arg (_data, "cue", cue_name);
+ _cdio_set_arg (_data, "source", bin_name);
+ free(bin_name);
+
+ if (_cdio_init(_data)) {
+ return ret;
+ } else {
+ cdio_generic_stream_free (_data);
+ return NULL;
+ }
+}
+
+bool
+cdio_have_bincue (void)
+{
+ return true;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-28 20:55:54 +0000