/* exif-mnote-data.c

 *

 * Copyright (C) 2003 Lutz Mueller <lutz@users.sourceforge.net>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details. 

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA  02110-1301  USA.

 *

 * SPDX-License-Identifier: LGPL-2.1-or-later

 */

#include <config.h>

#include <libexif/exif-mnote-data.h>

#include <libexif/exif-mnote-data-priv.h>

#include <stdlib.h>

#include <string.h>

struct _ExifMnoteDataPriv

{

  unsigned int ref_count;

};

void

exif_mnote_data_construct (ExifMnoteData *d, ExifMem *mem)

{

  if (!d || !mem) return;

  if (d->priv) return;

  d->priv = exif_mem_alloc (mem, sizeof (ExifMnoteDataPriv));

  if (!d->priv) return;

  d->priv->ref_count = 1;

  d->mem = mem;

  exif_mem_ref (mem);

}

void

exif_mnote_data_ref (ExifMnoteData *d)

{

  if (d && d->priv) d->priv->ref_count++;

}

static void

exif_mnote_data_free (ExifMnoteData *d)

{

  ExifMem *mem = d ? d->mem : NULL;

  if (!d) return;

  if (d->priv) {

    if (d->methods.free) d->methods.free (d);

    exif_mem_free (mem, d->priv);

    d->priv = NULL;

  }

  exif_log_unref (d->log);

  exif_mem_free (mem, d);

  exif_mem_unref (mem);

}

void

exif_mnote_data_unref (ExifMnoteData *d)

{

  if (!d || !d->priv) return;

  if (d->priv->ref_count > 0) d->priv->ref_count--;

  if (!d->priv->ref_count)

    exif_mnote_data_free (d);

}

void

exif_mnote_data_load (ExifMnoteData *d, const unsigned char *buf,

          unsigned int buf_size)

{

  if (!d || !d->methods.load) return;

  d->methods.load (d, buf, buf_size);

}

void

exif_mnote_data_save (ExifMnoteData *d, unsigned char **buf,

          unsigned int *buf_size)

{

  if (!d || !d->methods.save) return;

  d->methods.save (d, buf, buf_size);

}

void

exif_mnote_data_set_byte_order (ExifMnoteData *d, ExifByteOrder o)

{

  if (!d || !d->methods.set_byte_order) return;

  d->methods.set_byte_order (d, o);

}

void

exif_mnote_data_set_offset (ExifMnoteData *d, unsigned int o)

{

  if (!d || !d->methods.set_offset) return;

  d->methods.set_offset (d, o);

}

unsigned int

exif_mnote_data_count (ExifMnoteData *d)

{

  if (!d || !d->methods.count) return 0;

  return d->methods.count (d);

}

unsigned int

exif_mnote_data_get_id (ExifMnoteData *d, unsigned int n)

{

  if (!d || !d->methods.get_id) return 0;

  return d->methods.get_id (d, n);

}

const char *

exif_mnote_data_get_name (ExifMnoteData *d, unsigned int n)

{

  if (!d || !d->methods.get_name) return NULL;

  return d->methods.get_name (d, n);

}

const char *

exif_mnote_data_get_title (ExifMnoteData *d, unsigned int n)

{

  if (!d || !d->methods.get_title) return NULL;

  return d->methods.get_title (d, n);

}

const char *

exif_mnote_data_get_description (ExifMnoteData *d, unsigned int n)

{

  if (!d || !d->methods.get_description) return NULL;

  return d->methods.get_description (d, n);

}

char *

exif_mnote_data_get_value (ExifMnoteData *d, unsigned int n, char *val, unsigned int maxlen)

{

  if (!d || !d->methods.get_value) return NULL;

  return d->methods.get_value (d, n, val, maxlen);

}

void

exif_mnote_data_log (ExifMnoteData *d, ExifLog *log)

{

  if (!d) return;

  exif_log_unref (d->log);

  d->log = log;

  exif_log_ref (log);

}