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/* GStreamer
* Copyright (C) 2015 Sebastian Dröge <sebastian@centricular.com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "gstrtputils.h"
typedef struct
{
GstElement *element;
GstBuffer *outbuf;
GQuark copy_tag;
} CopyMetaData;
static gboolean
foreach_metadata_copy (GstBuffer * inbuf, GstMeta ** meta, gpointer user_data)
{
CopyMetaData *data = user_data;
GstElement *element = data->element;
GstBuffer *outbuf = data->outbuf;
GQuark copy_tag = data->copy_tag;
const GstMetaInfo *info = (*meta)->info;
const gchar *const *tags = gst_meta_api_type_get_tags (info->api);
if (!tags || (copy_tag != 0 && g_strv_length ((gchar **) tags) == 1
&& gst_meta_api_type_has_tag (info->api, copy_tag))) {
GstMetaTransformCopy copy_data = { FALSE, 0, -1 };
GST_DEBUG_OBJECT (element, "copy metadata %s", g_type_name (info->api));
/* simply copy then */
info->transform_func (outbuf, *meta, inbuf,
_gst_meta_transform_copy, ©_data);
} else {
GST_DEBUG_OBJECT (element, "not copying metadata %s",
g_type_name (info->api));
}
return TRUE;
}
/* TODO: Should probably make copy_tag an array at some point */
void
gst_rtp_copy_meta (GstElement * element, GstBuffer * outbuf, GstBuffer * inbuf,
GQuark copy_tag)
{
CopyMetaData data = { element, outbuf, copy_tag };
gst_buffer_foreach_meta (inbuf, foreach_metadata_copy, &data);
}
typedef struct
{
GstElement *element;
GQuark keep_tag;
} DropMetaData;
static gboolean
foreach_metadata_drop (GstBuffer * inbuf, GstMeta ** meta, gpointer user_data)
{
DropMetaData *data = user_data;
GstElement *element = data->element;
GQuark keep_tag = data->keep_tag;
const GstMetaInfo *info = (*meta)->info;
const gchar *const *tags = gst_meta_api_type_get_tags (info->api);
if (!tags || (keep_tag != 0 && g_strv_length ((gchar **) tags) == 1
&& gst_meta_api_type_has_tag (info->api, keep_tag))) {
GST_DEBUG_OBJECT (element, "keeping metadata %s", g_type_name (info->api));
} else {
GST_DEBUG_OBJECT (element, "dropping metadata %s", g_type_name (info->api));
*meta = NULL;
}
return TRUE;
}
/* TODO: Should probably make keep_tag an array at some point */
void
gst_rtp_drop_meta (GstElement * element, GstBuffer * buf, GQuark keep_tag)
{
DropMetaData data = { element, keep_tag };
gst_buffer_foreach_meta (buf, foreach_metadata_drop, &data);
}
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