import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

gfx/layers/client/CompositableClient.cpp

@@ -0,0 +1,274 @@
+/* -*- 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/CompositableClient.h"
+#include <stdint.h>                     // for uint64_t, uint32_t
+#include "gfxPlatform.h"                // for gfxPlatform
+#include "mozilla/layers/CompositableChild.h"
+#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/mozalloc.h"           // for operator delete, etc
+#include "mozilla/layers/PCompositableChild.h"
+#include "mozilla/layers/TextureClientRecycleAllocator.h"
+#ifdef XP_WIN
+#include "gfxWindowsPlatform.h"         // for gfxWindowsPlatform
+#include "mozilla/layers/TextureD3D11.h"
+#include "mozilla/layers/TextureD3D9.h"
+#endif
+#include "gfxUtils.h"
+#include "IPDLActor.h"
+
+namespace mozilla {
+namespace layers {
+
+using namespace mozilla::gfx;
+
+void
+CompositableClient::InitIPDLActor(PCompositableChild* aActor, uint64_t aAsyncID)
+{
+  MOZ_ASSERT(aActor);
+
+  mForwarder->AssertInForwarderThread();
+
+  mCompositableChild = static_cast<CompositableChild*>(aActor);
+  mCompositableChild->Init(this, aAsyncID);
+}
+
+/* static */ RefPtr<CompositableClient>
+CompositableClient::FromIPDLActor(PCompositableChild* aActor)
+{
+  MOZ_ASSERT(aActor);
+
+  RefPtr<CompositableClient> client = static_cast<CompositableChild*>(aActor)->GetCompositableClient();
+  if (!client) {
+    return nullptr;
+  }
+
+  client->mForwarder->AssertInForwarderThread();
+  return client;
+}
+
+CompositableClient::CompositableClient(CompositableForwarder* aForwarder,
+                                       TextureFlags aTextureFlags)
+: mForwarder(aForwarder)
+, mTextureFlags(aTextureFlags)
+{
+  MOZ_COUNT_CTOR(CompositableClient);
+}
+
+CompositableClient::~CompositableClient()
+{
+  MOZ_COUNT_DTOR(CompositableClient);
+  Destroy();
+}
+
+LayersBackend
+CompositableClient::GetCompositorBackendType() const
+{
+  return mForwarder->GetCompositorBackendType();
+}
+
+PCompositableChild*
+CompositableClient::GetIPDLActor() const
+{
+  return mCompositableChild;
+}
+
+bool
+CompositableClient::Connect(ImageContainer* aImageContainer)
+{
+  MOZ_ASSERT(!mCompositableChild);
+  if (!GetForwarder() || GetIPDLActor()) {
+    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 mCompositableChild && mCompositableChild->IsConnected();
+}
+
+void
+CompositableClient::Destroy()
+{
+  if (!mCompositableChild) {
+    return;
+  }
+
+  if (mTextureClientRecycler) {
+    mTextureClientRecycler->Destroy();
+  }
+
+  // Take away our IPDL's actor reference back to us.
+  mCompositableChild->RevokeCompositableClient();
+
+  // Schedule the IPDL actor to be destroyed on the forwarder's thread.
+  mForwarder->Destroy(mCompositableChild);
+  mCompositableChild = nullptr;
+}
+
+uint64_t
+CompositableClient::GetAsyncID() const
+{
+  if (mCompositableChild) {
+    return mCompositableChild->GetAsyncID();
+  }
+  return 0; // zero is always an invalid async ID
+}
+
+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);
+}
+
+already_AddRefed<TextureClient>
+CompositableClient::CreateTextureClientFromSurface(gfx::SourceSurface* aSurface,
+                                                   BackendSelector aSelector,
+                                                   TextureFlags aTextureFlags,
+                                                   TextureAllocationFlags aAllocFlags)
+{
+  return TextureClient::CreateFromSurface(GetForwarder(),
+                                          aSurface,
+                                          aSelector,
+                                          aTextureFlags | mTextureFlags,
+                                          aAllocFlags);
+}
+
+bool
+CompositableClient::AddTextureClient(TextureClient* aClient)
+{
+  if(!aClient) {
+    return false;
+  }
+  aClient->SetAddedToCompositableClient();
+  return aClient->InitIPDLActor(mForwarder);
+}
+
+void
+CompositableClient::ClearCachedResources()
+{
+  if (mTextureClientRecycler) {
+    mTextureClientRecycler->ShrinkToMinimumSize();
+  }
+}
+
+void
+CompositableClient::HandleMemoryPressure()
+{
+  if (mTextureClientRecycler) {
+    mTextureClientRecycler->ShrinkToMinimumSize();
+  }
+}
+
+void
+CompositableClient::RemoveTexture(TextureClient* aTexture)
+{
+  mForwarder->RemoveTextureFromCompositable(this, aTexture);
+}
+
+TextureClientRecycleAllocator*
+CompositableClient::GetTextureClientRecycler()
+{
+  if (mTextureClientRecycler) {
+    return mTextureClientRecycler;
+  }
+
+  if (!mForwarder) {
+    return nullptr;
+  }
+
+  if(!mForwarder->GetTextureForwarder()->UsesImageBridge()) {
+    MOZ_ASSERT(NS_IsMainThread());
+    mTextureClientRecycler = new layers::TextureClientRecycleAllocator(mForwarder);
+    return mTextureClientRecycler;
+  }
+
+  // Handle a case that mForwarder is ImageBridge
+
+  if (InImageBridgeChildThread()) {
+    mTextureClientRecycler = new layers::TextureClientRecycleAllocator(mForwarder);
+    return mTextureClientRecycler;
+  }
+
+  ReentrantMonitor barrier("CompositableClient::GetTextureClientRecycler");
+  ReentrantMonitorAutoEnter mainThreadAutoMon(barrier);
+  bool done = false;
+
+  RefPtr<Runnable> runnable =
+    NS_NewRunnableFunction([&]() {
+      if (!mTextureClientRecycler) {
+        mTextureClientRecycler = new layers::TextureClientRecycleAllocator(mForwarder);
+      }
+      ReentrantMonitorAutoEnter childThreadAutoMon(barrier);
+      done = true;
+      barrier.NotifyAll();
+    });
+
+  ImageBridgeChild::GetSingleton()->GetMessageLoop()->PostTask(runnable.forget());
+
+  // should stop the thread until done.
+  while (!done) {
+    barrier.Wait();
+  }
+
+  return mTextureClientRecycler;
+}
+
+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