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3768ef89b9
By directly providing a valid descriptor to match against Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3899>
120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/* GStreamer
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* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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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 <gst/gst.h>
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#include <string.h>
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#include "mxfessence.h"
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GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
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#define GST_CAT_DEFAULT mxf_debug
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static GSList *_mxf_essence_element_handler_registry = NULL;
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void
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mxf_essence_element_handler_register (const MXFEssenceElementHandler * handler)
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{
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_mxf_essence_element_handler_registry =
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g_slist_prepend (_mxf_essence_element_handler_registry,
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(gpointer) handler);
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}
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const MXFEssenceElementHandler *
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mxf_essence_element_handler_find (const MXFMetadataTimelineTrack * track)
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{
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GSList *l;
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guint i;
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MXFMetadataTrack *parent = (MXFMetadataTrack *) track;
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g_return_val_if_fail (track != NULL, NULL);
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if (parent->descriptor == NULL)
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return NULL;
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for (i = 0; i < parent->n_descriptor; i++) {
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MXFMetadataFileDescriptor *d = parent->descriptor[i];
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if (d) {
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for (l = _mxf_essence_element_handler_registry; l; l = l->next) {
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MXFEssenceElementHandler *current = l->data;
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if (current->handles_descriptor (d))
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return current;
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}
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}
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}
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return NULL;
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}
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static GList *_essence_element_writer_registry = NULL;
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static GPtrArray *_essence_element_writer_pad_templates = NULL;
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void
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mxf_essence_element_writer_register (const MXFEssenceElementWriter * writer)
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{
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_essence_element_writer_registry =
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g_list_prepend (_essence_element_writer_registry, (gpointer) writer);
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if (!_essence_element_writer_pad_templates)
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_essence_element_writer_pad_templates = g_ptr_array_new ();
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if (_essence_element_writer_pad_templates->len > 0 &&
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g_ptr_array_index (_essence_element_writer_pad_templates,
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_essence_element_writer_pad_templates->len - 1) == NULL)
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g_ptr_array_remove_index (_essence_element_writer_pad_templates,
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_essence_element_writer_pad_templates->len - 1);
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g_ptr_array_add (_essence_element_writer_pad_templates,
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(gpointer) writer->pad_template);
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}
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const GstPadTemplate **
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mxf_essence_element_writer_get_pad_templates (void)
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{
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if (!_essence_element_writer_pad_templates
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|| _essence_element_writer_pad_templates->len == 0)
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return NULL;
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if (g_ptr_array_index (_essence_element_writer_pad_templates,
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_essence_element_writer_pad_templates->len - 1))
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g_ptr_array_add (_essence_element_writer_pad_templates, NULL);
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return (const GstPadTemplate **) _essence_element_writer_pad_templates->pdata;
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}
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const MXFEssenceElementWriter *
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mxf_essence_element_writer_find (const GstPadTemplate * templ)
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{
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GList *l = _essence_element_writer_registry;
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for (; l; l = l->next) {
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MXFEssenceElementWriter *writer = l->data;
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if (writer->pad_template == templ)
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return writer;
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}
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return NULL;
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}
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