cuda: Add convertscale element

GstCudaConverter object can do colorspace conversion and scale at once.
Adding new element "cudaconvertscale" to do that, this can
save unnecessary GPU operation if colorspace conversion and
rescale is required for given input stream format.

Most of codes are taken from d3d11convert element

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3389>

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

@@ -51,6 +51,8 @@ struct _GstCudaBaseFilterClass
 
 GType gst_cuda_base_filter_get_type (void);
 
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstCudaBaseFilter, gst_object_unref)
+
 G_END_DECLS
 
 #endif /* __GST_CUDA_BASE_FILTER_H__ */

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

@@ -0,0 +1,50 @@
+/* GStreamer
+ * Copyright (C) 2022 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 "gstcudabasetransform.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_CUDA_BASE_CONVERT             (gst_cuda_base_convert_get_type())
+#define GST_CUDA_BASE_CONVERT(obj)             (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CUDA_BASE_CONVERT,GstCudaBaseConvert))
+#define GST_CUDA_BASE_CONVERT_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_CUDA_BASE_CONVERT,GstCudaBaseConvertClass))
+#define GST_CUDA_BASE_CONVERT_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_CUDA_BASE_CONVERT,GstCudaBaseConvertClass))
+#define GST_IS_CUDA_BASE_CONVERT(obj)          (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CUDA_BASE_CONVERT))
+#define GST_IS_CUDA_BASE_CONVERT_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_CUDA_BASE_CONVERT))
+
+typedef struct _GstCudaBaseConvert GstCudaBaseConvert;
+typedef struct _GstCudaBaseConvertClass GstCudaBaseConvertClass;
+
+struct _GstCudaBaseConvertClass
+{
+  GstCudaBaseTransform parent_class;
+};
+
+GType gst_cuda_base_convert_get_type (void);
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstCudaBaseConvert, gst_object_unref)
+
+#define GST_TYPE_CUDA_CONVERT_SCALE (gst_cuda_convert_scale_get_type())
+G_DECLARE_FINAL_TYPE (GstCudaConvertScale, gst_cuda_convert_scale,
+    GST, CUDA_CONVERT_SCALE, GstCudaBaseConvert)
+
+G_END_DECLS
+

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

@@ -27,6 +27,7 @@
 #include "gstcudafilter.h"
 #include "gstcudaconvert.h"
 #include "gstcudascale.h"
+#include "gstcudaconvertscale.h"
 
 /* *INDENT-OFF* */
 const gchar *nvrtc_test_source =
@@ -53,4 +54,6 @@ gst_cuda_filter_plugin_init (GstPlugin * plugin)
       GST_TYPE_CUDA_CONVERT);
   gst_element_register (plugin, "cudascale", GST_RANK_NONE,
       GST_TYPE_CUDA_SCALE);
+  gst_element_register (plugin, "cudaconvertscale", GST_RANK_NONE,
+      GST_TYPE_CUDA_CONVERT_SCALE);
 }

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

@@ -1,27 +1,28 @@
 nvcodec_sources = [
-  'plugin.c',
-  'gstnvenc.c',
-  'gstnvbaseenc.c',
-  'gstnvh264enc.c',
-  'gstnvh265enc.c',
-  'gstnvdec.c',
+  'cuda-converter.c',
+  'gstcudabasefilter.c',
+  'gstcudabasetransform.c',
+  'gstcudaconvert.c',
+  'gstcudaconvertscale.c',
+  'gstcudafilter.c',
+  'gstcudamemorycopy.c',
+  'gstcudascale.c',
   'gstcuvidloader.c',
   'gstnvav1dec.c',
+  'gstnvbaseenc.c',
+  'gstnvdec.c',
   'gstnvdecoder.c',
+  'gstnvenc.c',
+  'gstnvencoder.cpp',
+  'gstnvh264enc.c',
+  'gstnvh264encoder.cpp',
+  'gstnvh265enc.c',
+  'gstnvh265encoder.cpp',
   'gstnvh264dec.c',
   'gstnvh265dec.c',
-  'gstcudabasetransform.c',
-  'gstcudamemorycopy.c',
-  'cuda-converter.c',
-  'gstcudafilter.c',
-  'gstcudabasefilter.c',
-  'gstcudaconvert.c',
-  'gstcudascale.c',
   'gstnvvp8dec.c',
   'gstnvvp9dec.c',
-  'gstnvencoder.cpp',
-  'gstnvh264encoder.cpp',
-  'gstnvh265encoder.cpp',
+  'plugin.c',
 ]
 
 nvmm_sources = [