455 lines
10 KiB
C
455 lines
10 KiB
C
/*
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$Id: cdio.c,v 1.1 2003/03/24 19:01:09 rocky Exp $
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Copyright (C) 2003 Rocky Bernstein <rocky@panix.com>
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Copyright (C) 2001 Herbert Valerio Riedel <hvr@gnu.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "cdio_assert.h"
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#include "util.h"
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#include "logging.h"
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#include "cdio_private.h"
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static const char _rcsid[] = "$Id: cdio.c,v 1.1 2003/03/24 19:01:09 rocky Exp $";
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const char *track_format2str[5] =
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{
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"audio", "CD-i", "XA", "data", "error"
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};
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/* The below array gives of the drivers that are currently available for
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on a particular host. */
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CdIo_driver_t CdIo_driver[MAX_DRIVER] = { {0} };
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struct _CdIo {
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void *user_data;
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cdio_funcs op;
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};
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/* The last valid entry of Cdio_driver. -1 means uninitialzed. -2
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means some sort of error.
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*/
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int CdIo_last_driver = -1;
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static bool
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cdio_have_false(void)
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{
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return false;
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}
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/* The below array gives all drivers that can possibly appear.
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on a particular host. */
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CdIo_driver_t CdIo_all_drivers[MAX_DRIVER+1] = {
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{DRIVER_UNKNOWN,
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0,
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"Unknown",
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"No driver",
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&cdio_have_false,
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NULL
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},
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{DRIVER_LINUX,
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CDIO_SRC_IS_DEVICE_MASK|CDIO_SRC_IS_NATIVE_MASK,
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"Linux",
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"Linux ioctl and packet driver",
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&cdio_have_linux,
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&cdio_open_linux
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},
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{DRIVER_SOLARIS,
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CDIO_SRC_IS_DEVICE_MASK|CDIO_SRC_IS_NATIVE_MASK|CDIO_SRC_IS_SCSI_MASK,
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"Solaris",
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"Solaris ATAPI and SCSI driver",
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&cdio_have_solaris,
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&cdio_open_solaris
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},
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{DRIVER_BSDI,
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CDIO_SRC_IS_DEVICE_MASK|CDIO_SRC_IS_NATIVE_MASK|CDIO_SRC_IS_SCSI_MASK,
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"BSDI",
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"BSDI ATAPI and SCSI driver",
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&cdio_have_bsdi,
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cdio_open_bsdi
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},
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{DRIVER_NRG,
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CDIO_SRC_IS_DISK_IMAGE_MASK,
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"NRG",
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"Nero NRG disk image driver",
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&cdio_have_nrg,
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&cdio_open_nrg
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},
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{DRIVER_BINCUE,
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CDIO_SRC_IS_DISK_IMAGE_MASK,
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"BIN/CUE",
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"bin/cuesheet disk image driver",
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&cdio_have_bincue,
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&cdio_open_bincue
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}
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};
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/*!
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Eject media in CD drive if there is a routine to do so.
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Return 0 if success and 1 for failure, and 2 if no routine.
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*/
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int
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cdio_eject_media (const CdIo *obj)
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{
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cdio_assert (obj != NULL);
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if (obj->op.eject_media) {
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return obj->op.eject_media (obj->user_data);
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} else {
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return 2;
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}
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}
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/*!
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Return a string containing the default CD device if none is specified.
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*/
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const char *
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cdio_get_arg (const CdIo *obj, const char key[])
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{
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cdio_assert (obj != NULL);
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if (obj->op.get_arg) {
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return obj->op.get_arg (obj->user_data, key);
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} else {
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return NULL;
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}
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}
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/*!
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Return a string containing the default CD device if none is specified.
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*/
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char *
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cdio_get_default_device (const CdIo *obj)
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{
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cdio_assert (obj != NULL);
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if (obj->op.get_default_device) {
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return obj->op.get_default_device ();
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} else {
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return NULL;
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}
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}
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/*!
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Return the number of of the first track.
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CDIO_INVALID_TRACK is returned on error.
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*/
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track_t
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cdio_get_first_track_num (const CdIo *obj)
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{
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cdio_assert (obj != NULL);
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if (obj->op.get_first_track_num) {
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return obj->op.get_first_track_num (obj->user_data);
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} else {
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return CDIO_INVALID_TRACK;
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}
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}
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/*!
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Return the number of tracks in the current medium.
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CDIO_INVALID_TRACK is returned on error.
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*/
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track_t
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cdio_get_num_tracks (const CdIo *obj)
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{
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cdio_assert (obj != NULL);
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if (obj->op.get_num_tracks) {
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return obj->op.get_num_tracks (obj->user_data);
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} else {
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return CDIO_INVALID_TRACK;
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}
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}
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/*!
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Get format of track.
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*/
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track_format_t
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cdio_get_track_format(const CdIo *obj, track_t track_num)
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{
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cdio_assert (obj != NULL);
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if (obj->op.get_track_format) {
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return obj->op.get_track_format (obj->user_data, track_num);
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} else {
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return TRACK_FORMAT_ERROR;
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}
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}
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/*!
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Return true if we have XA data (green, mode2 form1) or
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XA data (green, mode2 form2). That is track begins:
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sync - header - subheader
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12 4 - 8
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FIXME: there's gotta be a better design for this and get_track_format?
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*/
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bool
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cdio_get_track_green(const CdIo *obj, track_t track_num)
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{
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cdio_assert (obj != NULL);
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if (obj->op.get_track_green) {
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return obj->op.get_track_green (obj->user_data, track_num);
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} else {
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return false;
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}
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}
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/*!
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Return the starting MSF (minutes/secs/frames) for track number
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track_num in obj. Track numbers start at 1.
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The "leadout" track is specified either by
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using track_num LEADOUT_TRACK or the total tracks+1.
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False is returned if there is no track entry.
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*/
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bool
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cdio_get_track_msf(const CdIo *obj, track_t track_num, msf_t *msf)
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{
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cdio_assert (obj != NULL);
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if (obj->op.get_track_msf) {
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return obj->op.get_track_msf (obj->user_data, track_num, msf);
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} else {
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return false;
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}
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}
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bool
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cdio_have_driver(driver_id_t driver_id)
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{
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return (*CdIo_all_drivers[driver_id].have_driver)();
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}
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/*!
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Initialize CD Reading and control routines. Should be called first.
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May be implicitly called by other routines if not called first.
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*/
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bool
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cdio_init(void)
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{
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CdIo_driver_t *all_dp;
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CdIo_driver_t *dp = CdIo_driver;
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driver_id_t driver_id;
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if (CdIo_last_driver != -1) {
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cdio_warn ("Init routine called more than once.");
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return false;
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}
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for (driver_id=DRIVER_UNKNOWN; driver_id<=MAX_DRIVER; driver_id++) {
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all_dp = &CdIo_all_drivers[driver_id];
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if ((*CdIo_all_drivers[driver_id].have_driver)()) {
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*dp++ = *all_dp;
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CdIo_last_driver++;
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}
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}
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return true;
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}
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CdIo *
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cdio_new (void *user_data, const cdio_funcs *funcs)
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{
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CdIo *new_obj;
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new_obj = _cdio_malloc (sizeof (CdIo));
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new_obj->user_data = user_data;
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new_obj->op = *funcs;
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return new_obj;
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}
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void
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cdio_destroy (CdIo *obj)
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{
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cdio_assert (obj != NULL);
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obj->op.free (obj->user_data);
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free (obj);
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}
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int
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cdio_read_mode2_sectors (CdIo *obj, void *buf, lsn_t lsn, bool mode2raw,
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unsigned num_sectors)
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{
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char *_buf = buf;
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const int blocksize = mode2raw ? M2RAW_SECTOR_SIZE : M2F1_SECTOR_SIZE;
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int n, rc;
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cdio_assert (obj != NULL);
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cdio_assert (buf != NULL);
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cdio_assert (obj->op.read_mode2_sector != NULL
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|| obj->op.read_mode2_sectors != NULL);
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if (obj->op.read_mode2_sectors)
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return obj->op.read_mode2_sectors (obj->user_data, buf, lsn,
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mode2raw, num_sectors);
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/* fallback */
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if (obj->op.read_mode2_sector != NULL)
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for (n = 0; n < num_sectors; n++)
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if ((rc = cdio_read_mode2_sector (obj, &_buf[n * blocksize],
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lsn + n, mode2raw)))
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return rc;
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return 0;
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}
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/*!
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Reads a single mode2 sector from cd device into data starting
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from lsn. Returns 0 if no error.
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*/
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int
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cdio_read_mode2_sector (CdIo *obj, void *buf, uint32_t lsn, bool mode2raw)
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{
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cdio_assert (obj != NULL);
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cdio_assert (buf != NULL);
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cdio_assert (obj->op.read_mode2_sector != NULL
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|| obj->op.read_mode2_sectors != NULL);
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if (obj->op.read_mode2_sector)
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return obj->op.read_mode2_sector (obj->user_data, buf, lsn, mode2raw);
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/* fallback */
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if (obj->op.read_mode2_sectors != NULL)
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return cdio_read_mode2_sectors (obj, buf, lsn, mode2raw, 1);
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return 1;
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}
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uint32_t
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cdio_stat_size (CdIo *obj)
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{
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cdio_assert (obj != NULL);
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return obj->op.stat_size (obj->user_data);
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}
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/*!
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Set the arg "key" with "value" in the source device.
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*/
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int
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cdio_set_arg (CdIo *obj, const char key[], const char value[])
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{
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cdio_assert (obj != NULL);
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cdio_assert (obj->op.set_arg != NULL);
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cdio_assert (key != NULL);
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return obj->op.set_arg (obj->user_data, key, value);
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}
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/*! Sets up to read from place specified by source_name and
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driver_id This should be called before using any other routine,
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except cdio_init. This will call cdio_init, if that hasn't been
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done previously. to call one of the specific routines below.
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NULL is returned on error.
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*/
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/* In the future we'll have more complicated code to allow selection
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of an I/O routine as well as code to find an appropriate default
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routine among the "registered" routines. Possibly classes too
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disk-based, SCSI-based, native-based, vendor (e.g. Sony, or
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Plextor) based
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For now though, we'll start more simply...
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*/
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CdIo *
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cdio_open (const char *source_name, driver_id_t driver_id)
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{
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if (CdIo_last_driver == -1) cdio_init();
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switch (driver_id) {
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case DRIVER_UNKNOWN:
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case DRIVER_DEVICE:
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{
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/* Scan for a driver. */
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for (driver_id=DRIVER_UNKNOWN; driver_id<=MAX_DRIVER; driver_id++) {
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if ((*CdIo_all_drivers[driver_id].have_driver)()) {
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CdIo *ret=(*CdIo_all_drivers[driver_id].driver_open)(source_name);
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if (ret != NULL) return ret;
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}
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}
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return NULL;
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}
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break;
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case DRIVER_LINUX:
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case DRIVER_SOLARIS:
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case DRIVER_BSDI:
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case DRIVER_NRG:
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case DRIVER_BINCUE:
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if ((*CdIo_all_drivers[driver_id].have_driver)()) {
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return (*CdIo_all_drivers[driver_id].driver_open)(source_name);
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}
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}
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return NULL;
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}
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/* In the future we'll have more complicated code to allow selection
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of an I/O routine as well as code to find an appropriate default
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routine among the "registered" routines. Possibly classes too
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disk-based, SCSI-based, native-based, vendor (e.g. Sony, or
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Plextor) based
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For now though, we'll start more simply...
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*/
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CdIo *
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cdio_open_cd (const char *source_name)
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{
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driver_id_t driver_id;
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if (CdIo_last_driver == -1) cdio_init();
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/* Scan for a driver. */
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for (driver_id=DRIVER_UNKNOWN; driver_id<=MAX_DRIVER; driver_id++) {
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if ((*CdIo_all_drivers[driver_id].have_driver)()) {
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CdIo *ret=(*CdIo_all_drivers[driver_id].driver_open)(source_name);
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if (ret != NULL) return ret;
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}
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}
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return NULL;
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}
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/*
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* Local variables:
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* c-file-style: "gnu"
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*/
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