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279 lines
7 KiB
C
279 lines
7 KiB
C
/*
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* GStreamer
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* Copyright 2007 Edgard Lima <edgard.lima@indt.org.br>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Alternatively, the contents of this file may be used under the
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* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
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* which case the following provisions apply instead of the ones
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* mentioned above:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "metadataxmp.h"
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#include "metadataparseutil.h"
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#include "metadatatags.h"
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GST_DEBUG_CATEGORY (gst_metadata_xmp_debug);
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#define GST_CAT_DEFAULT gst_metadata_xmp_debug
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#ifndef HAVE_XMP
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void
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metadataparse_xmp_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
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GstAdapter * adapter, MetadataTagMapping mapping)
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{
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if (mapping & METADATA_TAG_MAP_WHOLECHUNK) {
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GST_LOG ("XMP not defined, here I should send just one tag as whole chunk");
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metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_XMP, adapter);
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}
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}
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gboolean
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metadataparse_xmp_init (void)
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{
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return TRUE;
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}
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void
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metadataparse_xmp_dispose (void)
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{
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return;
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}
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void
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metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
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const GstTagList * taglist)
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{
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/* do nothing */
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}
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#else /* ifndef HAVE_XMP */
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#include <xmp.h>
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#define XMP_SCHEMA_NODE 0x80000000UL
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void
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metadataparse_xmp_iter_array (XmpPtr xmp, const char *schema, const char *path);
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static void
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metadataparse_xmp_iter_simple (const char *schema, const char *path,
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const char *value);
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static void metadataparse_xmp_iter (XmpPtr xmp, XmpIteratorPtr iter);
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gboolean
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metadataparse_xmp_init (void)
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{
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return xmp_init ();
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}
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void
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metadataparse_xmp_dispose (void)
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{
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xmp_terminate ();
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}
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void
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metadataparse_xmp_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
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GstAdapter * adapter, MetadataTagMapping mapping)
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{
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const guint8 *buf;
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guint32 size;
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XmpPtr xmp = NULL;
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XmpIteratorPtr xmp_iter = NULL;
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if (adapter == NULL || (size = gst_adapter_available (adapter)) == 0) {
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goto done;
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}
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/* add chunk tag */
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if (mapping & METADATA_TAG_MAP_WHOLECHUNK)
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metadataparse_util_tag_list_add_chunk (taglist, mode, GST_TAG_XMP, adapter);
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if (!(mapping & METADATA_TAG_MAP_INDIVIDUALS))
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goto done;
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buf = gst_adapter_peek (adapter, size);
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xmp = xmp_new (buf, size);
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if (!xmp)
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goto done;
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xmp_iter = xmp_iterator_new (xmp, NULL, NULL, XMP_ITER_JUSTCHILDREN);
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if (!xmp_iter)
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goto done;
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metadataparse_xmp_iter (xmp, xmp_iter);
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done:
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if (xmp_iter) {
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xmp_iterator_free (xmp_iter);
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}
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if (xmp) {
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xmp_free (xmp);
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}
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return;
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}
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void
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metadataparse_xmp_iter_simple_qual (const char *schema, const char *path,
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const char *value)
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{
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GString *string = g_string_new (path);
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gchar *ch;
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ch = string->str + string->len - 3;
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while (ch != string->str) {
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if (*ch == '[') {
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*ch = '\0';
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}
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--ch;
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}
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GST_LOG (" %s = %s\n", string->str, value);
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g_string_free (string, TRUE);
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}
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void
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metadataparse_xmp_iter_simple (const char *schema, const char *path,
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const char *value)
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{
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GST_LOG (" %s = %s\n", path, value);
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}
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void
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metadataparse_xmp_iter_array (XmpPtr xmp, const char *schema, const char *path)
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{
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XmpIteratorPtr xmp_iter = NULL;
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xmp_iter = xmp_iterator_new (xmp, schema, path, XMP_ITER_JUSTCHILDREN);
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if (xmp_iter) {
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metadataparse_xmp_iter (xmp, xmp_iter);
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xmp_iterator_free (xmp_iter);
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}
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}
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void
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metadataparse_xmp_iter (XmpPtr xmp, XmpIteratorPtr iter)
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{
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XmpStringPtr xstr_schema = xmp_string_new ();
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XmpStringPtr xstr_path = xmp_string_new ();
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XmpStringPtr xstr_prop = xmp_string_new ();
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uint32_t opt = 0;
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while (xmp_iterator_next (iter, xstr_schema, xstr_path, xstr_prop, &opt)) {
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const char *schema = xmp_string_cstr (xstr_schema);
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const char *path = xmp_string_cstr (xstr_path);
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const char *value = xmp_string_cstr (xstr_prop);
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if (XMP_IS_NODE_SCHEMA (opt)) {
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GST_LOG ("%s\n", schema);
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metadataparse_xmp_iter_array (xmp, schema, path);
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} else if (XMP_IS_PROP_SIMPLE (opt)) {
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if (strcmp (path, "") != 0) {
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if (XMP_HAS_PROP_QUALIFIERS (opt)) {
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metadataparse_xmp_iter_simple_qual (schema, path, value);
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} else {
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metadataparse_xmp_iter_simple (schema, path, value);
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}
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}
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} else if (XMP_IS_PROP_ARRAY (opt)) {
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if (XMP_IS_ARRAY_ALTTEXT (opt)) {
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metadataparse_xmp_iter_array (xmp, schema, path);
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xmp_iterator_skip (iter, XMP_ITER_SKIPSUBTREE);
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} else {
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metadataparse_xmp_iter_array (xmp, schema, path);
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xmp_iterator_skip (iter, XMP_ITER_SKIPSUBTREE);
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}
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}
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}
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if (xstr_prop) {
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xmp_string_free (xstr_prop);
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}
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if (xstr_path) {
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xmp_string_free (xstr_path);
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}
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if (xstr_schema) {
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xmp_string_free (xstr_schema);
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}
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}
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void
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metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
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const GstTagList * taglist)
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{
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GstBuffer *xmp_chunk = NULL;
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const GValue *val = NULL;
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if (!(buf && size))
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goto done;
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if (*buf) {
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g_free (*buf);
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*buf = NULL;
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}
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*size = 0;
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val = gst_tag_list_get_value_index (taglist, GST_TAG_XMP, 0);
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if (val) {
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xmp_chunk = gst_value_get_buffer (val);
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if (xmp_chunk) {
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*size = GST_BUFFER_SIZE (xmp_chunk);
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*buf = g_new (guint8, *size);
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memcpy (*buf, GST_BUFFER_DATA (xmp_chunk), *size);
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}
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}
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done:
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return;
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}
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#endif /* else (ifndef HAVE_XMP) */
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