113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
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/*
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$Id: cdio.c,v 1.14 2008/04/22 15:29:11 karl Exp $
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Copyright (C) 2003, 2004, 2005, 2008 Rocky Bernstein <rocky@gnu.org>
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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 3 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, see <http://www.gnu.org/licenses/>.
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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 <sys/types.h>
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#include <sys/stat.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "cdio_assert.h"
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#include <cdio/cdio.h>
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#include <cdio/util.h>
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#include "cdio_private.h"
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static const char _rcsid[] = "$Id: cdio.c,v 1.14 2008/04/22 15:29:11 karl Exp $";
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/*!
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Return the value associatied with key. NULL is returned if obj is NULL
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or "key" does not exist.
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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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if (obj == NULL) return NULL;
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if (obj->op.get_arg) {
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return obj->op.get_arg (obj->env, 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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Get cdtext information for a CdIo object .
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@param obj the CD object that may contain CD-TEXT information.
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@return the CD-TEXT object or NULL if obj is NULL
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or CD-TEXT information does not exist.
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*/
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cdtext_t *
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cdio_get_cdtext (CdIo *obj, track_t i_track)
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{
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if (obj == NULL) return NULL;
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if (obj->op.get_cdtext) {
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return obj->op.get_cdtext (obj->env, i_track);
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} else {
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return NULL;
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}
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}
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CdIo_t *
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cdio_new (generic_img_private_t *p_env, cdio_funcs_t *p_funcs)
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{
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CdIo_t *p_new_cdio = calloc(1, sizeof (CdIo_t));
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if (NULL == p_new_cdio) return NULL;
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p_new_cdio->env = p_env; /* This is the private "environment" that
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driver-dependent routines use. */
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p_new_cdio->op = *p_funcs;
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p_env->cdio = p_new_cdio; /* A way for the driver-dependent routines
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to access the higher-level general cdio
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object. */
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return p_new_cdio;
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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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driver_return_code_t
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cdio_set_arg (CdIo_t *p_cdio, const char key[], const char value[])
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{
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if (!p_cdio) return DRIVER_OP_UNINIT;
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if (!p_cdio->op.set_arg) return DRIVER_OP_UNSUPPORTED;
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if (!key) return DRIVER_OP_ERROR;
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return p_cdio->op.set_arg (p_cdio->env, key, value);
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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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