nvcodec: Add cudacompositor element

Adding CUDA based compositor element

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8170>

subprojects/gst-plugins-bad/sys/nvcodec/gstcudacompositor.h

@@ -0,0 +1,38 @@
+/* GStreamer
+ * Copyright (C) 2024 Seungha Yang <seungha@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.
+ */
+
+#pragma once
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include <gst/video/gstvideoaggregator.h>
+#include <gst/cuda/gstcuda.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_CUDA_COMPOSITOR_PAD (gst_cuda_compositor_pad_get_type())
+G_DECLARE_FINAL_TYPE (GstCudaCompositorPad, gst_cuda_compositor_pad,
+    GST, CUDA_COMPOSITOR_PAD, GstVideoAggregatorPad)
+
+#define GST_TYPE_CUDA_COMPOSITOR (gst_cuda_compositor_get_type())
+G_DECLARE_FINAL_TYPE (GstCudaCompositor, gst_cuda_compositor,
+    GST, CUDA_COMPOSITOR, GstVideoAggregator)
+
+G_END_DECLS
+

subprojects/gst-plugins-bad/sys/nvcodec/meson.build

@@ -1,5 +1,6 @@
 nvcodec_sources = [
   'gstcudabasetransform.c',
+  'gstcudacompositor.cpp',
   'gstcudaconverter.cpp',
   'gstcudaconvertscale.c',
   'gstcudaipc.cpp',

subprojects/gst-plugins-bad/sys/nvcodec/plugin.c

@@ -57,6 +57,7 @@
 #include "gstcudaipcsink.h"
 #include "gstcudaipcsrc.h"
 #include "gstnvcodecutils.h"
+#include "gstcudacompositor.h"
 
 #include <glib/gi18n-lib.h>
 
@@ -350,6 +351,8 @@ plugin_init (GstPlugin * plugin)
         GST_TYPE_CUDA_SCALE);
     gst_element_register (plugin, "cudaconvertscale", GST_RANK_NONE,
         GST_TYPE_CUDA_CONVERT_SCALE);
+    gst_element_register (plugin, "cudacompositor", GST_RANK_NONE,
+        GST_TYPE_CUDA_COMPOSITOR);
   }
   gst_element_register (plugin,
       "cudaipcsink", GST_RANK_NONE, GST_TYPE_CUDA_IPC_SINK);