blob: e881e2ad9a991fb64385d35a94f325b95e7a20ee [file] [log] [blame]
/*
* GStreamer
* Copyright (C) 2017 Intel Corporation
*
* 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.
*/
/**
* SECTION:gstdmabufmeta
* @short_description: dmabuf metadata
* @see_also: #GstDmaBufAllocator
*
* #GstDmabufMeta carries metadata that goes along with
* dmabuf memory in the buffer, like drm modifier.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdmabufmeta.h"
/**
* gst_buffer_add_dmabuf_meta:
* @buffer: a #GstBuffer
* @modifier: the drm modifier
*
* Returns: (transfer none): the #GstDmabufMeta added to #GstBuffer
*
* Since: 1.12
*/
GstDmabufMeta *
gst_buffer_add_dmabuf_meta (GstBuffer * buffer, guint64 drm_modifier)
{
GstDmabufMeta *meta;
meta =
(GstDmabufMeta *) gst_buffer_add_meta ((buffer),
GST_DMABUF_META_INFO, NULL);
if (!meta)
return NULL;
meta->drm_modifier = drm_modifier;
return meta;
}
static gboolean
gst_dmabuf_meta_transform (GstBuffer * dest, GstMeta * meta,
GstBuffer * buffer, GQuark type, gpointer data)
{
GstDmabufMeta *dmeta, *smeta;
smeta = (GstDmabufMeta *) meta;
if (GST_META_TRANSFORM_IS_COPY (type)) {
GstMetaTransformCopy *copy = data;
if (!copy->region) {
/* only copy if the complete data is copied as well */
dmeta = gst_buffer_add_dmabuf_meta (dest, smeta->drm_modifier);
if (!dmeta)
return FALSE;
}
} else {
/* return FALSE, if transform type is not supported */
return FALSE;
}
return TRUE;
}
static void
gst_dmabuf_meta_free (GstMeta * meta, GstBuffer * buffer)
{
((GstDmabufMeta *) meta)->drm_modifier = 0;
return;
}
static gboolean
gst_dmabuf_meta_init (GstMeta * meta, gpointer params, GstBuffer * buffer)
{
((GstDmabufMeta *) meta)->drm_modifier = 0;
return TRUE;
}
GType
gst_dmabuf_meta_api_get_type (void)
{
static volatile GType type = 0;
static const gchar *tags[] = { NULL };
if (g_once_init_enter (&type)) {
GType _type = gst_meta_api_type_register ("GstDmabufMetaAPI", tags);
g_once_init_leave (&type, _type);
}
return type;
}
const GstMetaInfo *
gst_dmabuf_meta_get_info (void)
{
static const GstMetaInfo *meta_info = NULL;
if (g_once_init_enter (&meta_info)) {
const GstMetaInfo *meta = gst_meta_register (GST_DMABUF_META_API_TYPE,
"GstDmabufMeta",
sizeof (GstDmabufMeta), gst_dmabuf_meta_init,
gst_dmabuf_meta_free,
gst_dmabuf_meta_transform);
g_once_init_leave (&meta_info, meta);
}
return meta_info;
}
void
gst_query_add_allocation_dmabuf_meta (GstQuery * query, guint64 drm_modifier)
{
guint index;
GstStructure *params;
if (!gst_query_find_allocation_meta (query, GST_DMABUF_META_API_TYPE, &index)) {
gchar *str =
g_strdup_printf ("GstDmabufMeta, dmabuf.drm_modifier=(guint64){ %"
G_GUINT64_FORMAT " };", drm_modifier);
params = gst_structure_new_from_string (str);
g_free (str);
gst_query_add_allocation_meta (query, GST_DMABUF_META_API_TYPE, params);
gst_structure_free (params);
} else {
GValue newlist = G_VALUE_INIT, drm_modifier_value = G_VALUE_INIT;
gst_query_parse_nth_allocation_meta (query, index,
(const GstStructure **) &params);
g_value_init (&drm_modifier_value, G_TYPE_UINT64);
g_value_set_uint64 (&drm_modifier_value, drm_modifier);
gst_value_list_merge (&newlist, gst_structure_get_value (params,
"dmabuf.drm_modifier"), &drm_modifier_value);
gst_structure_take_value (params, "dmabuf.drm_modifier", &newlist);
}
}