d3d12: Add support for resource copy between d3d11 and d3d12

If driver can support cross-api resource sharing, use device-to-device
resource copy in d3d12upload/download elements.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7119>

subprojects/gst-plugins-bad/sys/d3d12/gstd3d12memorycopy.h

@@ -0,0 +1,61 @@
+/* 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/base/gstbasetransform.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_D3D12_MEMORY_COPY             (gst_d3d12_memory_copy_get_type())
+#define GST_D3D12_MEMORY_COPY(obj)             (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_D3D12_MEMORY_COPY,GstD3D12MemoryCopy))
+#define GST_D3D12_MEMORY_COPY_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_D3D12_MEMORY_COPY,GstD3D12MemoryCopyClass))
+#define GST_D3D12_MEMORY_COPY_GET_CLASS(obj)   (GST_D3D12_MEMORY_COPY_CLASS(G_OBJECT_GET_CLASS(obj)))
+#define GST_IS_D3D12_MEMORY_COPY(obj)          (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_D3D12_MEMORY_COPY))
+#define GST_IS_D3D12_MEMORY_COPY_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_D3D12_MEMORY_COPY))
+
+typedef struct _GstD3D12MemoryCopy GstD3D12MemoryCopy;
+typedef struct _GstD3D12MemoryCopyClass GstD3D12MemoryCopyClass;
+typedef struct _GstD3D12MemoryCopyPrivate GstD3D12MemoryCopyPrivate;
+
+struct _GstD3D12MemoryCopy
+{
+  GstBaseTransform parent;
+
+  GstD3D12MemoryCopyPrivate *priv;
+};
+
+struct _GstD3D12MemoryCopyClass
+{
+  GstBaseTransformClass parent_class;
+};
+
+GType gst_d3d12_memory_copy_get_type (void);
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstD3D12MemoryCopy, gst_object_unref)
+
+#define GST_TYPE_D3D12_UPLOAD (gst_d3d12_upload_get_type())
+G_DECLARE_FINAL_TYPE (GstD3D12Upload,
+    gst_d3d12_upload, GST, D3D12_UPLOAD, GstD3D12MemoryCopy);
+
+#define GST_TYPE_D3D12_DOWNLOAD (gst_d3d12_download_get_type())
+G_DECLARE_FINAL_TYPE (GstD3D12Download,
+    gst_d3d12_download, GST, D3D12_DOWNLOAD, GstD3D12MemoryCopy);
+
+G_END_DECLS
+

subprojects/gst-plugins-bad/sys/d3d12/meson.build

@@ -5,7 +5,6 @@ d3d12_sources = [
   'gstd3d12convert.cpp',
   'gstd3d12decoder.cpp',
   'gstd3d12decodercpbpool.cpp',
-  'gstd3d12download.cpp',
   'gstd3d12dpbstorage.cpp',
   'gstd3d12dxgicapture.cpp',
   'gstd3d12encoder.cpp',
@@ -25,7 +24,6 @@ d3d12_sources = [
   'gstd3d12screencapturedevice.cpp',
   'gstd3d12screencapturesrc.cpp',
   'gstd3d12testsrc.cpp',
-  'gstd3d12upload.cpp',
   'gstd3d12videosink.cpp',
   'gstd3d12vp8dec.cpp',
   'gstd3d12vp9dec.cpp',
@@ -159,6 +157,19 @@ if have_wgc and dwmapi_lib.found()
   extra_deps += [dwmapi_lib]
 endif
 
+if gstd3d11_dep.found()
+  extra_args += ['-DHAVE_GST_D3D11']
+  extra_deps += [gstd3d11_dep]
+  d3d12_sources += [
+    'gstd3d12memorycopy.cpp',
+  ]
+else
+  d3d12_sources += [
+    'gstd3d12download.cpp',
+    'gstd3d12upload.cpp',
+  ]
+endif
+
 gstd3d12 = library('gstd3d12',
   d3d12_sources,
   c_args : gst_plugins_bad_args + extra_args,

subprojects/gst-plugins-bad/sys/d3d12/plugin.cpp

@@ -31,8 +31,6 @@
 #include <gst/d3d12/gstd3d12.h>
 #include "gstd3d12pluginutils.h"
 #include "gstd3d12convert.h"
-#include "gstd3d12download.h"
-#include "gstd3d12upload.h"
 #include "gstd3d12videosink.h"
 #include "gstd3d12testsrc.h"
 #include "gstd3d12compositor.h"
@@ -53,6 +51,13 @@
 #include <wrl.h>
 #include <glib/gi18n-lib.h>
 
+#ifdef HAVE_GST_D3D11
+#include "gstd3d12memorycopy.h"
+#else
+#include "gstd3d12download.h"
+#include "gstd3d12upload.h"
+#endif
+
 /* *INDENT-OFF* */
 using namespace Microsoft::WRL;
 /* *INDENT-ON* */