mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-30 21:51:09 +00:00
121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
/* GStreamer
|
|
* Copyright (C) 2008 Jan Schmidt <thaytan@noraisin.net>
|
|
*
|
|
* 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.
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include <string.h>
|
|
|
|
#include <gst/gst.h>
|
|
|
|
#include "rsnwrappedbuffer.h"
|
|
|
|
GstBuffer *
|
|
rsn_wrapped_buffer_new (GstBuffer * buf_to_wrap, GstElement * owner)
|
|
{
|
|
GstBuffer *buf;
|
|
RsnMetaWrapped *meta;
|
|
|
|
g_return_val_if_fail (buf_to_wrap, NULL);
|
|
|
|
buf = gst_buffer_new ();
|
|
meta = RSN_META_WRAPPED_ADD (buf);
|
|
|
|
meta->wrapped_buffer = buf_to_wrap;
|
|
meta->owner = gst_object_ref (owner);
|
|
|
|
GST_BUFFER_DATA (buf) = GST_BUFFER_DATA (buf_to_wrap);
|
|
GST_BUFFER_SIZE (buf) = GST_BUFFER_SIZE (buf_to_wrap);
|
|
gst_buffer_copy_metadata (GST_BUFFER (buf), buf_to_wrap, GST_BUFFER_COPY_ALL);
|
|
|
|
/* If the wrapped buffer isn't writable, make sure this one isn't either */
|
|
if (!gst_buffer_is_writable (buf_to_wrap))
|
|
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_READONLY);
|
|
|
|
return buf;
|
|
}
|
|
|
|
void
|
|
rsn_meta_wrapped_set_owner (RsnMetaWrapped * meta, GstElement * owner)
|
|
{
|
|
g_return_if_fail (meta != NULL);
|
|
|
|
if (meta->owner)
|
|
gst_object_unref (meta->owner);
|
|
|
|
if (owner)
|
|
gst_object_ref (owner);
|
|
|
|
meta->owner = owner;
|
|
}
|
|
|
|
GstBuffer *
|
|
rsn_meta_wrapped_unwrap_and_unref (GstBuffer * wrap_buf, RsnMetaWrapped * meta)
|
|
{
|
|
GstBuffer *buf;
|
|
gboolean is_readonly;
|
|
|
|
g_return_val_if_fail (wrap_buf != NULL, NULL);
|
|
g_return_val_if_fail (meta->wrapped_buffer != NULL, NULL);
|
|
|
|
buf = gst_buffer_ref (meta->wrapped_buffer);
|
|
buf = gst_buffer_make_metadata_writable (buf);
|
|
|
|
/* Copy changed metadata back to the wrapped buffer from the wrapper,
|
|
* except the the read-only flag and the caps. */
|
|
is_readonly = GST_BUFFER_FLAG_IS_SET (wrap_buf, GST_BUFFER_FLAG_READONLY);
|
|
gst_buffer_copy_metadata (buf, GST_BUFFER (wrap_buf),
|
|
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS);
|
|
if (!is_readonly)
|
|
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_READONLY);
|
|
|
|
gst_buffer_unref (wrap_buf);
|
|
|
|
return buf;
|
|
}
|
|
|
|
static void
|
|
rsn_meta_wrapped_init (RsnMetaWrapped * meta, GstBuffer * buffer)
|
|
{
|
|
meta->owner = NULL;
|
|
}
|
|
|
|
static void
|
|
rsn_meta_wrapped_free (RsnMetaWrapped * meta, GstBuffer * buffer)
|
|
{
|
|
gst_buffer_unref (meta->wrapped_buffer);
|
|
if (meta->owner)
|
|
gst_object_unref (meta->owner);
|
|
}
|
|
|
|
const GstMetaInfo *
|
|
rsn_meta_wrapped_get_info (void)
|
|
{
|
|
static const GstMetaInfo *meta_info = NULL;
|
|
|
|
if (meta_info == NULL) {
|
|
meta_info = gst_meta_register ("RsnMetaWrapped", "RsnMetaWrapped",
|
|
sizeof (RsnMetaWrapped),
|
|
(GstMetaInitFunction) rsn_meta_wrapped_init,
|
|
(GstMetaFreeFunction) rsn_meta_wrapped_free,
|
|
(GstMetaTransformFunction) NULL,
|
|
(GstMetaSerializeFunction) NULL, (GstMetaDeserializeFunction) NULL);
|
|
}
|
|
return meta_info;
|
|
}
|