import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

gfx/layers/client/GPUVideoTextureClient.cpp

@@ -0,0 +1,72 @@
+/* -*- 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 "GPUVideoTextureClient.h"
+#include "mozilla/dom/VideoDecoderManagerChild.h"
+#include "mozilla/gfx/2D.h"
+
+namespace mozilla {
+namespace layers {
+
+using namespace gfx;
+
+GPUVideoTextureData::GPUVideoTextureData(dom::VideoDecoderManagerChild* aManager,
+                                         const SurfaceDescriptorGPUVideo& aSD,
+                                         const gfx::IntSize& aSize)
+  : mManager(aManager)
+  , mSD(aSD)
+  , mSize(aSize)
+{}
+
+GPUVideoTextureData::~GPUVideoTextureData()
+{
+}
+
+bool
+GPUVideoTextureData::Serialize(SurfaceDescriptor& aOutDescriptor)
+{
+  aOutDescriptor = mSD;
+  return true;
+}
+
+void
+GPUVideoTextureData::FillInfo(TextureData::Info& aInfo) const
+{
+  aInfo.size = mSize;
+  // TODO: We should probably try do better for this.
+  // layers::Image doesn't expose a format, so it's hard
+  // to figure out in VideoDecoderParent.
+  aInfo.format = SurfaceFormat::B8G8R8X8;
+  aInfo.hasIntermediateBuffer = false;
+  aInfo.hasSynchronization = false;
+  aInfo.supportsMoz2D = false;
+  aInfo.canExposeMappedData = false;
+}
+
+already_AddRefed<SourceSurface>
+GPUVideoTextureData::GetAsSourceSurface()
+{
+  return mManager->Readback(mSD);
+}
+
+void
+GPUVideoTextureData::Deallocate(LayersIPCChannel* aAllocator)
+{
+  mManager->DeallocateSurfaceDescriptorGPUVideo(mSD);
+  mSD = SurfaceDescriptorGPUVideo();
+}
+
+void
+GPUVideoTextureData::Forget(LayersIPCChannel* aAllocator)
+{
+  // We always need to manually deallocate on the client side.
+  // Ideally we'd set up our TextureClient with the DEALLOCATE_CLIENT
+  // flag, but that forces texture destruction to be synchronous.
+  // Instead let's just deallocate from here as well.
+  Deallocate(aAllocator);
+}
+
+} // namespace layers
+} // namespace mozilla