1 files changed, 173 insertions, 0 deletions
diff --git a/gfx/layers/client/CompositableClient.cpp b/gfx/layers/client/CompositableClient.cpp
new file mode 100644
index 0000000000..453f1e17ce
--- /dev/null
+++ b/gfx/layers/client/CompositableClient.cpp
@@ -0,0 +1,173 @@
+/* -*- 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/. */
+
+#include "mozilla/layers/CompositableClient.h"
+
+#include <stdint.h>  // for uint64_t, uint32_t
+
+#include "gfxPlatform.h"  // for gfxPlatform
+#include "mozilla/layers/CompositableForwarder.h"
+#include "mozilla/layers/ImageBridgeChild.h"
+#include "mozilla/layers/TextureClient.h"  // for TextureClient, etc
+#include "mozilla/layers/TextureClientOGL.h"
+#include "mozilla/layers/TextureClientRecycleAllocator.h"
+#include "mozilla/mozalloc.h"  // for operator delete, etc
+#ifdef XP_WIN
+#  include "gfxWindowsPlatform.h"  // for gfxWindowsPlatform
+#  include "mozilla/layers/TextureD3D11.h"
+#endif
+#include "IPDLActor.h"
+#include "gfxUtils.h"
+
+namespace mozilla {
+namespace layers {
+
+using namespace mozilla::gfx;
+
+void CompositableClient::InitIPDL(const CompositableHandle& aHandle) {
+  MOZ_ASSERT(aHandle);
+
+  mForwarder->AssertInForwarderThread();
+
+  mHandle = aHandle;
+  mIsAsync |= !NS_IsMainThread();
+  // By simply taking the lock on mTextureClientRecycler we force memory barrier
+  // on mHandle and mIsAsync which makes them behave as Atomic as they are only
+  // ever set in this method.
+  auto l = mTextureClientRecycler.Lock();
+}
+
+CompositableClient::CompositableClient(CompositableForwarder* aForwarder,
+                                       TextureFlags aTextureFlags)
+    : mForwarder(aForwarder),
+      mTextureFlags(aTextureFlags),
+      mTextureClientRecycler("CompositableClient::mTextureClientRecycler"),
+      mIsAsync(false) {}
+
+CompositableClient::~CompositableClient() { Destroy(); }
+
+LayersBackend CompositableClient::GetCompositorBackendType() const {
+  return mForwarder->GetCompositorBackendType();
+}
+
+bool CompositableClient::Connect(ImageContainer* aImageContainer) {
+  MOZ_ASSERT(!mHandle);
+  if (!GetForwarder() || mHandle) {
+    return false;
+  }
+
+  GetForwarder()->AssertInForwarderThread();
+  GetForwarder()->Connect(this, aImageContainer);
+  return true;
+}
+
+bool CompositableClient::IsConnected() const {
+  // CanSend() is only reliable in the same thread as the IPDL channel.
+  mForwarder->AssertInForwarderThread();
+  return !!mHandle;
+}
+
+void CompositableClient::Destroy() {
+  auto l = mTextureClientRecycler.Lock();
+  if (*l) {
+    (*l)->Destroy();
+  }
+
+  if (mHandle) {
+    mForwarder->ReleaseCompositable(mHandle);
+    mHandle = CompositableHandle();
+  }
+}
+
+CompositableHandle CompositableClient::GetAsyncHandle() const {
+  if (mIsAsync) {
+    return mHandle;
+  }
+  return CompositableHandle();
+}
+
+already_AddRefed<TextureClient> CompositableClient::CreateBufferTextureClient(
+    gfx::SurfaceFormat aFormat, gfx::IntSize aSize,
+    gfx::BackendType aMoz2DBackend, TextureFlags aTextureFlags) {
+  return TextureClient::CreateForRawBufferAccess(GetForwarder(), aFormat, aSize,
+                                                 aMoz2DBackend,
+                                                 aTextureFlags | mTextureFlags);
+}
+
+already_AddRefed<TextureClient>
+CompositableClient::CreateTextureClientForDrawing(
+    gfx::SurfaceFormat aFormat, gfx::IntSize aSize, BackendSelector aSelector,
+    TextureFlags aTextureFlags, TextureAllocationFlags aAllocFlags) {
+  return TextureClient::CreateForDrawing(
+      GetForwarder(), aFormat, aSize, aSelector, aTextureFlags | mTextureFlags,
+      aAllocFlags);
+}
+
+bool CompositableClient::AddTextureClient(TextureClient* aClient) {
+  if (!aClient) {
+    return false;
+  }
+  aClient->SetAddedToCompositableClient();
+  return aClient->InitIPDLActor(mForwarder);
+}
+
+void CompositableClient::ClearCachedResources() {
+  auto l = mTextureClientRecycler.Lock();
+  if (*l) {
+    (*l)->ShrinkToMinimumSize();
+  }
+}
+
+void CompositableClient::HandleMemoryPressure() {
+  auto l = mTextureClientRecycler.Lock();
+  if (*l) {
+    (*l)->ShrinkToMinimumSize();
+  }
+}
+
+void CompositableClient::RemoveTexture(TextureClient* aTexture) {
+  mForwarder->RemoveTextureFromCompositable(this, aTexture);
+}
+
+TextureClientRecycleAllocator* CompositableClient::GetTextureClientRecycler() {
+  auto l = mTextureClientRecycler.Lock();
+  if (*l) {
+    return *l;
+  }
+
+  if (!mForwarder || !mForwarder->GetTextureForwarder()) {
+    return nullptr;
+  }
+
+  *l = new layers::TextureClientRecycleAllocator(mForwarder);
+  return *l;
+}
+
+void CompositableClient::DumpTextureClient(std::stringstream& aStream,
+                                           TextureClient* aTexture,
+                                           TextureDumpMode aCompress) {
+  if (!aTexture) {
+    return;
+  }
+  RefPtr<gfx::DataSourceSurface> dSurf = aTexture->GetAsSurface();
+  if (!dSurf) {
+    return;
+  }
+  if (aCompress == TextureDumpMode::Compress) {
+    aStream << gfxUtils::GetAsLZ4Base64Str(dSurf).get();
+  } else {
+    aStream << gfxUtils::GetAsDataURI(dSurf).get();
+  }
+}
+
+AutoRemoveTexture::~AutoRemoveTexture() {
+  if (mCompositable && mTexture && mCompositable->IsConnected()) {
+    mCompositable->RemoveTexture(mTexture);
+  }
+}
+
+}  // namespace layers
+}  // namespace mozilla