gstreamer/ext/metadata/metadataiptc.c

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/*
* GStreamer
* Copyright 2007 Edgard Lima <edgard.lima@indt.org.br>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "metadataiptc.h"
#include "metadataparseutil.h"
#include "metadatatags.h"
GST_DEBUG_CATEGORY (gst_metadata_iptc_debug);
#define GST_CAT_DEFAULT gst_metadata_iptc_debug
#ifndef HAVE_IPTC
void
metadataparse_iptc_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GstAdapter * adapter, MetadataTagMapping mapping)
{
if (mapping & METADATA_TAG_MAP_WHOLECHUNK) {
GST_LOG
("IPTC not defined, here I should send just one tag as whole chunk");
metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_IPTC,
adapter);
}
}
void
metadatamux_iptc_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
const GstTagList * taglist)
{
/* do nothing */
}
#else /* ifndef HAVE_IPTC */
#include <iptc-data.h>
#include <iptc-tag.h>
#include <string.h>
#include <gst/gsttaglist.h>
typedef struct _tag_MEUserData
{
GstTagList *taglist;
GstTagMergeMode mode;
} MEUserData;
typedef struct _tag_MapIntStr
{
IptcRecord record;
IptcTag iptc;
const gchar *str;
} MapIntStr;
static void
iptc_data_foreach_dataset_func (IptcDataSet * dataset, void *user_data);
/* *INDENT-OFF* */
static MapIntStr mappedTags[] = {
{IPTC_RECORD_APP_2, IPTC_TAG_OBJECT_NAME, /*ASCII*/ GST_TAG_TITLE /*STRING*/},
{IPTC_RECORD_APP_2, IPTC_TAG_BYLINE, /*ASCII*/ GST_TAG_COMPOSER /*STRING*/},
{IPTC_RECORD_APP_2, IPTC_TAG_CAPTION, /*ASCII*/ GST_TAG_DESCRIPTION /*STRING*/},
{IPTC_RECORD_APP_2, IPTC_TAG_COPYRIGHT_NOTICE, /*ASCII*/ GST_TAG_COPYRIGHT /*STRING*/},
{0, 0, NULL}
};
/* *INDENT-ON* */
static const gchar *
metadataparse_iptc_get_tag_from_iptc (IptcTag iptc, GType * type,
IptcRecord * record)
{
int i = 0;
while (mappedTags[i].iptc) {
if (iptc == mappedTags[i].iptc) {
*type = gst_tag_get_type (mappedTags[i].str);
*record = mappedTags[i].record;
break;
}
++i;
}
return mappedTags[i].str;
}
static IptcTag
metadataparse_iptc_get_iptc_from_tag (const gchar * tag, GType * type,
IptcRecord * record)
{
int i = 0;
while (mappedTags[i].iptc) {
if (0 == strcmp (mappedTags[i].str, tag)) {
*type = gst_tag_get_type (tag);
*record = mappedTags[i].record;
break;
}
++i;
}
return mappedTags[i].iptc;
}
void
metadataparse_iptc_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GstAdapter * adapter, MetadataTagMapping mapping)
{
const guint8 *buf;
guint32 size;
IptcData *iptc = NULL;
MEUserData user_data = { taglist, mode };
if (adapter == NULL || (size = gst_adapter_available (adapter)) == 0) {
goto done;
}
/* add chunk tag */
if (mapping & METADATA_TAG_MAP_WHOLECHUNK)
metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_IPTC,
adapter);
if (!(mapping & METADATA_TAG_MAP_INDIVIDUALS))
goto done;
buf = gst_adapter_peek (adapter, size);
iptc = iptc_data_new_from_data (buf, size);
if (iptc == NULL) {
goto done;
}
iptc_data_foreach_dataset (iptc, iptc_data_foreach_dataset_func,
(void *) &user_data);
done:
if (iptc)
iptc_data_unref (iptc);
return;
}
static void
iptc_data_foreach_dataset_func (IptcDataSet * dataset, void *user_data)
{
char buf[1024];
MEUserData *meudata = (MEUserData *) user_data;
GType type;
IptcRecord record;
const gchar *tag =
metadataparse_iptc_get_tag_from_iptc (dataset->tag, &type, &record);
const gchar *value = iptc_dataset_get_as_str (dataset, buf, 1024);
if (!tag)
goto done;
gst_tag_list_add (meudata->taglist, meudata->mode, tag, value, NULL);
done:
GST_LOG ("name -> %s", iptc_tag_get_name (dataset->record, dataset->tag));
GST_LOG ("title -> %s", iptc_tag_get_title (dataset->record, dataset->tag));
GST_LOG ("description -> %s", iptc_tag_get_description (dataset->record,
dataset->tag));
GST_LOG ("value = %s", value);
GST_LOG ("record = %d", dataset->record);
return;
}
static void
metadataiptc_for_each_tag_in_list (const GstTagList * list, const gchar * tag,
gpointer user_data)
{
IptcData *iptc = (IptcData *) user_data;
IptcTag iptc_tag;
IptcRecord record;
GType type;
IptcDataSet *dataset = NULL;
gboolean new_dataset = FALSE;
gchar *tag_value = NULL;
iptc_tag = metadataparse_iptc_get_iptc_from_tag (tag, &type, &record);
if (!iptc_tag)
goto done;
dataset = iptc_data_get_dataset (iptc, record, iptc_tag);
if (!dataset) {
dataset = iptc_dataset_new ();
new_dataset = TRUE;
}
iptc_dataset_set_tag (dataset, record, iptc_tag);
if (gst_tag_list_get_string (list, tag, &tag_value)) {
iptc_dataset_set_data (dataset, tag_value, strlen (tag_value),
IPTC_DONT_VALIDATE);
g_free (tag_value);
tag_value = NULL;
}
if (new_dataset)
iptc_data_add_dataset (iptc, dataset);
done:
if (dataset)
iptc_dataset_unref (dataset);
}
void
metadatamux_iptc_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
const GstTagList * taglist)
{
IptcData *iptc = NULL;
GstBuffer *iptc_chunk = NULL;
const GValue *val = NULL;
if (!(buf && size))
goto done;
if (*buf) {
g_free (*buf);
*buf = NULL;
}
*size = 0;
val = gst_tag_list_get_value_index (taglist, GST_TAG_IPTC, 0);
if (val) {
iptc_chunk = gst_value_get_buffer (val);
if (iptc_chunk) {
iptc = iptc_data_new_from_data (GST_BUFFER_DATA (iptc_chunk),
GST_BUFFER_SIZE (iptc_chunk));
}
}
if (!iptc) {
iptc = iptc_data_new ();
}
gst_tag_list_foreach (taglist, metadataiptc_for_each_tag_in_list, iptc);
iptc_data_save (iptc, buf, size);
done:
if (iptc)
iptc_data_unref (iptc);
return;
}
#endif /* else (ifndef HAVE_IPTC) */