1 files changed, 71 insertions, 0 deletions
diff --git a/gfx/layers/ipc/SurfaceDescriptor.h b/gfx/layers/ipc/SurfaceDescriptor.h
new file mode 100644
index 0000000000..17ee00c6ae
--- /dev/null
+++ b/gfx/layers/ipc/SurfaceDescriptor.h
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef IPC_SurfaceDescriptor_h
+#define IPC_SurfaceDescriptor_h
+
+#if defined(XP_MACOSX)
+#  define MOZ_HAVE_PLATFORM_SPECIFIC_LAYER_BUFFERS
+#endif
+
+#if defined(MOZ_X11)
+#  include "mozilla/AlreadyAddRefed.h"
+#  include "mozilla/gfx/Point.h"
+
+#  define MOZ_HAVE_SURFACEDESCRIPTORX11
+#  define MOZ_HAVE_PLATFORM_SPECIFIC_LAYER_BUFFERS
+
+typedef unsigned long XID;
+typedef XID Drawable;
+
+class gfxXlibSurface;
+
+namespace mozilla {
+namespace layers {
+
+struct SurfaceDescriptorX11 {
+  SurfaceDescriptorX11() = default;
+
+  explicit SurfaceDescriptorX11(gfxXlibSurface* aSurf,
+                                bool aForwardGLX = false);
+
+  SurfaceDescriptorX11(Drawable aDrawable, XID aFormatID,
+                       const gfx::IntSize& aSize);
+
+  // Default copy ctor and operator= are OK
+
+  bool operator==(const SurfaceDescriptorX11& aOther) const {
+    // Define == as two descriptors having the same XID for now,
+    // ignoring size and render format.  If the two indeed refer to
+    // the same valid XID, then size/format are "actually" the same
+    // anyway, regardless of the values of the fields in
+    // SurfaceDescriptorX11.
+    return mId == aOther.mId;
+  }
+
+  already_AddRefed<gfxXlibSurface> OpenForeign() const;
+
+  MOZ_INIT_OUTSIDE_CTOR Drawable mId;
+  MOZ_INIT_OUTSIDE_CTOR XID mFormat;  // either a PictFormat or VisualID
+  MOZ_INIT_OUTSIDE_CTOR gfx::IntSize mSize;
+  MOZ_INIT_OUTSIDE_CTOR Drawable
+      mGLXPixmap;  // used to prevent multiple bindings to the same GLXPixmap
+                   // in-process
+};
+
+}  // namespace layers
+}  // namespace mozilla
+#else
+namespace mozilla {
+namespace layers {
+struct SurfaceDescriptorX11 {
+  bool operator==(const SurfaceDescriptorX11&) const { return false; }
+};
+}  // namespace layers
+}  // namespace mozilla
+#endif
+
+#endif  // IPC_SurfaceDescriptor_h