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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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dd995bd9d4
Similar to glupload/gldownload elements but for CUDA memory. It will help transfer memory between system and nvidia GPU Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1633>
122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/* GStreamer
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* Copyright (C) <2019> Seungha Yang <seungha.yang@navercorp.com>
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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 "gstcudaupload.h"
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GST_DEBUG_CATEGORY_STATIC (gst_cuda_upload_debug);
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#define GST_CAT_DEFAULT gst_cuda_upload_debug
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static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-raw; video/x-raw("
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GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY ")"));
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static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY ")"));
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G_DEFINE_TYPE (GstCudaUpload, gst_cuda_upload, GST_TYPE_CUDA_BASE_TRANSFORM);
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static GstCaps *gst_cuda_upload_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps, GstCaps * filter);
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static void
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gst_cuda_upload_class_init (GstCudaUploadClass * klass)
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{
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GstElementClass *element_class;
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GstBaseTransformClass *trans_class;
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element_class = GST_ELEMENT_CLASS (klass);
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trans_class = GST_BASE_TRANSFORM_CLASS (klass);
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gst_element_class_add_static_pad_template (element_class, &sink_template);
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gst_element_class_add_static_pad_template (element_class, &src_template);
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gst_element_class_set_static_metadata (element_class,
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"CUDA uploader", "Filter/Video",
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"Uploads data into NVIDA GPU via CUDA APIs",
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"Seungha Yang <seungha.yang@navercorp.com>");
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trans_class->passthrough_on_same_caps = TRUE;
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trans_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_cuda_upload_transform_caps);
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GST_DEBUG_CATEGORY_INIT (gst_cuda_upload_debug,
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"cudaupload", 0, "cudaupload Element");
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}
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static void
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gst_cuda_upload_init (GstCudaUpload * upload)
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{
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}
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static GstCaps *
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_set_caps_features (const GstCaps * caps, const gchar * feature_name)
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{
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GstCaps *tmp = gst_caps_copy (caps);
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guint n = gst_caps_get_size (tmp);
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guint i = 0;
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for (i = 0; i < n; i++)
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gst_caps_set_features (tmp, i,
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gst_caps_features_from_string (feature_name));
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return tmp;
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}
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static GstCaps *
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gst_cuda_upload_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps, GstCaps * filter)
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{
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GstCaps *result, *tmp;
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GST_DEBUG_OBJECT (trans,
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"Transforming caps %" GST_PTR_FORMAT " in direction %s", caps,
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(direction == GST_PAD_SINK) ? "sink" : "src");
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if (direction == GST_PAD_SINK) {
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tmp = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY);
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tmp = gst_caps_merge (gst_caps_ref (caps), tmp);
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} else {
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GstCaps *newcaps;
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tmp = gst_caps_ref (caps);
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newcaps = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY);
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tmp = gst_caps_merge (tmp, newcaps);
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}
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if (filter) {
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result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (tmp);
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} else {
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result = tmp;
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}
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GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, result);
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return result;
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}
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