1 files changed, 156 insertions, 0 deletions
diff --git a/gfx/layers/basic/TextureClientX11.cpp b/gfx/layers/basic/TextureClientX11.cpp
new file mode 100644
index 000000000..c79ab1a53
--- /dev/null
+++ b/gfx/layers/basic/TextureClientX11.cpp
@@ -0,0 +1,156 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+//  * 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/. */
+#include "mozilla/layers/TextureClientX11.h"
+#include "mozilla/layers/CompositableClient.h"
+#include "mozilla/layers/CompositableForwarder.h"
+#include "mozilla/layers/ISurfaceAllocator.h"
+#include "mozilla/layers/ShadowLayerUtilsX11.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/gfx/Logging.h"
+#include "gfxXlibSurface.h"
+#include "gfx2DGlue.h"
+
+#include "mozilla/X11Util.h"
+#include <X11/Xlib.h>
+
+using namespace mozilla;
+using namespace mozilla::gfx;
+
+namespace mozilla {
+namespace layers {
+
+X11TextureData::X11TextureData(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
+                               bool aClientDeallocation, bool aIsCrossProcess,
+                               gfxXlibSurface* aSurface)
+: mSize(aSize)
+, mFormat(aFormat)
+, mSurface(aSurface)
+, mClientDeallocation(aClientDeallocation)
+, mIsCrossProcess(aIsCrossProcess)
+{
+  MOZ_ASSERT(mSurface);
+}
+
+bool
+X11TextureData::Lock(OpenMode aMode)
+{
+  return true;
+}
+
+void
+X11TextureData::Unlock()
+{
+  if (mSurface && mIsCrossProcess) {
+    FinishX(DefaultXDisplay());
+  }
+}
+
+void
+X11TextureData::FillInfo(TextureData::Info& aInfo) const
+{
+  aInfo.size = mSize;
+  aInfo.format = mFormat;
+  aInfo.supportsMoz2D = true;
+  aInfo.hasIntermediateBuffer = false;
+  aInfo.hasSynchronization = false;
+  aInfo.canExposeMappedData = false;
+}
+
+bool
+X11TextureData::Serialize(SurfaceDescriptor& aOutDescriptor)
+{
+  MOZ_ASSERT(mSurface);
+  if (!mSurface) {
+    return false;
+  }
+
+  if (!mClientDeallocation) {
+    // Pass to the host the responsibility of freeing the pixmap. ReleasePixmap means
+    // the underlying pixmap will not be deallocated in mSurface's destructor.
+    // ToSurfaceDescriptor is at most called once per TextureClient.
+    mSurface->ReleasePixmap();
+  }
+
+  aOutDescriptor = SurfaceDescriptorX11(mSurface);
+  return true;
+}
+
+already_AddRefed<gfx::DrawTarget>
+X11TextureData::BorrowDrawTarget()
+{
+  MOZ_ASSERT(mSurface);
+  if (!mSurface) {
+    return nullptr;
+  }
+
+  IntSize size = mSurface->GetSize();
+  RefPtr<gfx::DrawTarget> dt = Factory::CreateDrawTargetForCairoSurface(mSurface->CairoSurface(), size);
+
+  return dt.forget();
+}
+
+bool
+X11TextureData::UpdateFromSurface(gfx::SourceSurface* aSurface)
+{
+  RefPtr<DrawTarget> dt = BorrowDrawTarget();
+
+  if (!dt) {
+    return false;
+  }
+
+  dt->CopySurface(aSurface, IntRect(IntPoint(), aSurface->GetSize()), IntPoint());
+
+  return true;
+}
+
+void
+X11TextureData::Deallocate(LayersIPCChannel*)
+{
+  mSurface = nullptr;
+}
+
+TextureData*
+X11TextureData::CreateSimilar(LayersIPCChannel* aAllocator,
+                              LayersBackend aLayersBackend,
+                              TextureFlags aFlags,
+                              TextureAllocationFlags aAllocFlags) const
+{
+  return X11TextureData::Create(mSize, mFormat, aFlags, aAllocator);
+}
+
+X11TextureData*
+X11TextureData::Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
+                       TextureFlags aFlags, LayersIPCChannel* aAllocator)
+{
+  MOZ_ASSERT(aSize.width >= 0 && aSize.height >= 0);
+  if (aSize.width <= 0 || aSize.height <= 0 ||
+      aSize.width > XLIB_IMAGE_SIDE_SIZE_LIMIT ||
+      aSize.height > XLIB_IMAGE_SIDE_SIZE_LIMIT) {
+    gfxDebug() << "Asking for X11 surface of invalid size " << aSize.width << "x" << aSize.height;
+    return nullptr;
+  }
+  gfxImageFormat imageFormat = SurfaceFormatToImageFormat(aFormat);
+  RefPtr<gfxASurface> surface = gfxPlatform::GetPlatform()->CreateOffscreenSurface(aSize, imageFormat);
+  if (!surface || surface->GetType() != gfxSurfaceType::Xlib) {
+    NS_ERROR("creating Xlib surface failed!");
+    return nullptr;
+  }
+
+  gfxXlibSurface* xlibSurface = static_cast<gfxXlibSurface*>(surface.get());
+
+  bool crossProcess = !aAllocator->IsSameProcess();
+  X11TextureData* texture = new X11TextureData(aSize, aFormat,
+                                               !!(aFlags & TextureFlags::DEALLOCATE_CLIENT),
+                                               crossProcess,
+                                               xlibSurface);
+  if (crossProcess) {
+    FinishX(DefaultXDisplay());
+  }
+
+  return texture;
+}
+
+} // namespace
+} // namespace