gstreamer/ext/metadata/metadataxmp.c
Edgard Lima 8152bfe972 Added some tags to exif parser.
Original commit message from CVS:
Added some tags to exif parser.
2007-12-05 17:00:59 +00:00

279 lines
7 KiB
C

/*
* 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 "metadataxmp.h"
#include "metadataparseutil.h"
#include "metadatatags.h"
GST_DEBUG_CATEGORY (gst_metadata_xmp_debug);
#define GST_CAT_DEFAULT gst_metadata_xmp_debug
#ifndef HAVE_XMP
void
metadataparse_xmp_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GstAdapter * adapter, MetadataTagMapping mapping)
{
if (mapping & METADATA_TAG_MAP_WHOLECHUNK) {
GST_LOG ("XMP not defined, here I should send just one tag as whole chunk");
metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_XMP, adapter);
}
}
gboolean
metadataparse_xmp_init (void)
{
return TRUE;
}
void
metadataparse_xmp_dispose (void)
{
return;
}
void
metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
const GstTagList * taglist)
{
/* do nothing */
}
#else /* ifndef HAVE_XMP */
#include <xmp.h>
#define XMP_SCHEMA_NODE 0x80000000UL
void
metadataparse_xmp_iter_array (XmpPtr xmp, const char *schema, const char *path);
static void
metadataparse_xmp_iter_simple (const char *schema, const char *path,
const char *value);
static void metadataparse_xmp_iter (XmpPtr xmp, XmpIteratorPtr iter);
gboolean
metadataparse_xmp_init (void)
{
return xmp_init ();
}
void
metadataparse_xmp_dispose (void)
{
xmp_terminate ();
}
void
metadataparse_xmp_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
GstAdapter * adapter, MetadataTagMapping mapping)
{
const guint8 *buf;
guint32 size;
XmpPtr xmp = NULL;
XmpIteratorPtr xmp_iter = NULL;
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_XMP, adapter);
if (!(mapping & METADATA_TAG_MAP_INDIVIDUALS))
goto done;
buf = gst_adapter_peek (adapter, size);
xmp = xmp_new (buf, size);
if (!xmp)
goto done;
xmp_iter = xmp_iterator_new (xmp, NULL, NULL, XMP_ITER_JUSTCHILDREN);
if (!xmp_iter)
goto done;
metadataparse_xmp_iter (xmp, xmp_iter);
done:
if (xmp_iter) {
xmp_iterator_free (xmp_iter);
}
if (xmp) {
xmp_free (xmp);
}
return;
}
void
metadataparse_xmp_iter_simple_qual (const char *schema, const char *path,
const char *value)
{
GString *string = g_string_new (path);
gchar *ch;
ch = string->str + string->len - 3;
while (ch != string->str) {
if (*ch == '[') {
*ch = '\0';
}
--ch;
}
GST_LOG (" %s = %s\n", string->str, value);
g_string_free (string, TRUE);
}
void
metadataparse_xmp_iter_simple (const char *schema, const char *path,
const char *value)
{
GST_LOG (" %s = %s\n", path, value);
}
void
metadataparse_xmp_iter_array (XmpPtr xmp, const char *schema, const char *path)
{
XmpIteratorPtr xmp_iter = NULL;
xmp_iter = xmp_iterator_new (xmp, schema, path, XMP_ITER_JUSTCHILDREN);
if (xmp_iter) {
metadataparse_xmp_iter (xmp, xmp_iter);
xmp_iterator_free (xmp_iter);
}
}
void
metadataparse_xmp_iter (XmpPtr xmp, XmpIteratorPtr iter)
{
XmpStringPtr xstr_schema = xmp_string_new ();
XmpStringPtr xstr_path = xmp_string_new ();
XmpStringPtr xstr_prop = xmp_string_new ();
uint32_t opt = 0;
while (xmp_iterator_next (iter, xstr_schema, xstr_path, xstr_prop, &opt)) {
const char *schema = xmp_string_cstr (xstr_schema);
const char *path = xmp_string_cstr (xstr_path);
const char *value = xmp_string_cstr (xstr_prop);
if (XMP_IS_NODE_SCHEMA (opt)) {
GST_LOG ("%s\n", schema);
metadataparse_xmp_iter_array (xmp, schema, path);
} else if (XMP_IS_PROP_SIMPLE (opt)) {
if (strcmp (path, "") != 0) {
if (XMP_HAS_PROP_QUALIFIERS (opt)) {
metadataparse_xmp_iter_simple_qual (schema, path, value);
} else {
metadataparse_xmp_iter_simple (schema, path, value);
}
}
} else if (XMP_IS_PROP_ARRAY (opt)) {
if (XMP_IS_ARRAY_ALTTEXT (opt)) {
metadataparse_xmp_iter_array (xmp, schema, path);
xmp_iterator_skip (iter, XMP_ITER_SKIPSUBTREE);
} else {
metadataparse_xmp_iter_array (xmp, schema, path);
xmp_iterator_skip (iter, XMP_ITER_SKIPSUBTREE);
}
}
}
if (xstr_prop) {
xmp_string_free (xstr_prop);
}
if (xstr_path) {
xmp_string_free (xstr_path);
}
if (xstr_schema) {
xmp_string_free (xstr_schema);
}
}
void
metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
const GstTagList * taglist)
{
GstBuffer *xmp_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_XMP, 0);
if (val) {
xmp_chunk = gst_value_get_buffer (val);
if (xmp_chunk) {
*size = GST_BUFFER_SIZE (xmp_chunk);
*buf = g_new (guint8, *size);
memcpy (*buf, GST_BUFFER_DATA (xmp_chunk), *size);
}
}
done:
return;
}
#endif /* else (ifndef HAVE_XMP) */