mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-30 05:31:15 +00:00
123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
|
|
/* GStreamer
|
|
* Copyright (C) <2019> Seungha Yang <seungha.yang@navercorp.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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include "gstcudadownload.h"
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (gst_cuda_download_debug);
|
|
#define GST_CAT_DEFAULT gst_cuda_download_debug
|
|
|
|
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY
|
|
"); video/x-raw"));
|
|
|
|
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("video/x-raw"));
|
|
|
|
G_DEFINE_TYPE (GstCudaDownload, gst_cuda_download,
|
|
GST_TYPE_CUDA_BASE_TRANSFORM);
|
|
|
|
static GstCaps *gst_cuda_download_transform_caps (GstBaseTransform * trans,
|
|
GstPadDirection direction, GstCaps * caps, GstCaps * filter);
|
|
|
|
static void
|
|
gst_cuda_download_class_init (GstCudaDownloadClass * klass)
|
|
{
|
|
GstElementClass *element_class;
|
|
GstBaseTransformClass *trans_class;
|
|
|
|
element_class = GST_ELEMENT_CLASS (klass);
|
|
trans_class = GST_BASE_TRANSFORM_CLASS (klass);
|
|
|
|
gst_element_class_add_static_pad_template (element_class, &sink_template);
|
|
gst_element_class_add_static_pad_template (element_class, &src_template);
|
|
|
|
gst_element_class_set_static_metadata (element_class,
|
|
"CUDA downloader", "Filter/Video",
|
|
"Downloads data from NVIDA GPU via CUDA APIs",
|
|
"Seungha Yang <seungha.yang@navercorp.com>");
|
|
|
|
trans_class->passthrough_on_same_caps = TRUE;
|
|
|
|
trans_class->transform_caps =
|
|
GST_DEBUG_FUNCPTR (gst_cuda_download_transform_caps);
|
|
|
|
GST_DEBUG_CATEGORY_INIT (gst_cuda_download_debug,
|
|
"cudadownload", 0, "cudadownload Element");
|
|
}
|
|
|
|
static void
|
|
gst_cuda_download_init (GstCudaDownload * download)
|
|
{
|
|
}
|
|
|
|
static GstCaps *
|
|
_set_caps_features (const GstCaps * caps, const gchar * feature_name)
|
|
{
|
|
GstCaps *tmp = gst_caps_copy (caps);
|
|
guint n = gst_caps_get_size (tmp);
|
|
guint i = 0;
|
|
|
|
for (i = 0; i < n; i++)
|
|
gst_caps_set_features (tmp, i,
|
|
gst_caps_features_from_string (feature_name));
|
|
|
|
return tmp;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_cuda_download_transform_caps (GstBaseTransform * trans,
|
|
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
|
|
{
|
|
GstCaps *result, *tmp;
|
|
|
|
GST_DEBUG_OBJECT (trans,
|
|
"Transforming caps %" GST_PTR_FORMAT " in direction %s", caps,
|
|
(direction == GST_PAD_SINK) ? "sink" : "src");
|
|
|
|
if (direction == GST_PAD_SINK) {
|
|
tmp = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY);
|
|
tmp = gst_caps_merge (gst_caps_ref (caps), tmp);
|
|
} else {
|
|
GstCaps *newcaps;
|
|
tmp = gst_caps_ref (caps);
|
|
|
|
newcaps = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY);
|
|
tmp = gst_caps_merge (tmp, newcaps);
|
|
}
|
|
|
|
if (filter) {
|
|
result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (tmp);
|
|
} else {
|
|
result = tmp;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, result);
|
|
|
|
return result;
|
|
}
|