1 files changed, 167 insertions, 0 deletions
diff --git a/gfx/layers/composite/CompositableHost.cpp b/gfx/layers/composite/CompositableHost.cpp
new file mode 100644
index 0000000000..056f26de04
--- /dev/null
+++ b/gfx/layers/composite/CompositableHost.cpp
@@ -0,0 +1,167 @@
+/* -*- 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 "CompositableHost.h"
+#include <map>            // for _Rb_tree_iterator, map, etc
+#include <utility>        // for pair
+#include "ContentHost.h"  // for ContentHostDoubleBuffered, etc
+#include "Effects.h"      // for EffectMask, Effect, etc
+#include "gfxUtils.h"
+#include "ImageHost.h"  // for ImageHostBuffered, etc
+#include "Layers.h"
+#include "TiledContentHost.h"  // for TiledContentHost
+#include "mozilla/gfx/gfxVars.h"
+#include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor
+#include "mozilla/layers/TextureHost.h"     // for TextureHost, etc
+#include "mozilla/layers/WebRenderImageHost.h"
+#include "mozilla/RefPtr.h"   // for nsRefPtr
+#include "nsDebug.h"          // for NS_WARNING
+#include "nsISupportsImpl.h"  // for MOZ_COUNT_CTOR, etc
+#include "gfxPlatform.h"      // for gfxPlatform
+#include "IPDLActor.h"
+
+namespace mozilla {
+
+using namespace gfx;
+
+namespace layers {
+
+class Compositor;
+
+CompositableHost::CompositableHost(const TextureInfo& aTextureInfo)
+    : mTextureInfo(aTextureInfo),
+      mCompositorBridgeID(0),
+      mLayer(nullptr),
+      mFlashCounter(0),
+      mAttached(false),
+      mKeepAttached(false) {
+  MOZ_COUNT_CTOR(CompositableHost);
+}
+
+CompositableHost::~CompositableHost() { MOZ_COUNT_DTOR(CompositableHost); }
+
+void CompositableHost::UseTextureHost(const nsTArray<TimedTexture>& aTextures) {
+  if (mTextureSourceProvider) {
+    for (auto& texture : aTextures) {
+      texture.mTexture->SetTextureSourceProvider(mTextureSourceProvider);
+    }
+  }
+}
+
+void CompositableHost::UseComponentAlphaTextures(TextureHost* aTextureOnBlack,
+                                                 TextureHost* aTextureOnWhite) {
+  MOZ_ASSERT(aTextureOnBlack && aTextureOnWhite);
+  if (mTextureSourceProvider) {
+    aTextureOnBlack->SetTextureSourceProvider(mTextureSourceProvider);
+    aTextureOnWhite->SetTextureSourceProvider(mTextureSourceProvider);
+  }
+}
+
+void CompositableHost::RemoveTextureHost(TextureHost* aTexture) {}
+
+void CompositableHost::SetTextureSourceProvider(
+    TextureSourceProvider* aProvider) {
+  MOZ_ASSERT(aProvider);
+  mTextureSourceProvider = aProvider;
+}
+
+bool CompositableHost::AddMaskEffect(EffectChain& aEffects,
+                                     const gfx::Matrix4x4& aTransform) {
+  CompositableTextureSourceRef source;
+  RefPtr<TextureHost> host = GetAsTextureHost();
+
+  if (!host) {
+    NS_WARNING("Using compositable with no valid TextureHost as mask");
+    return false;
+  }
+
+  if (!host->Lock()) {
+    NS_WARNING("Failed to lock the mask texture");
+    return false;
+  }
+
+  if (!host->BindTextureSource(source)) {
+    NS_WARNING(
+        "The TextureHost was successfully locked but can't provide a "
+        "TextureSource");
+    host->Unlock();
+    return false;
+  }
+  MOZ_ASSERT(source);
+
+  RefPtr<EffectMask> effect =
+      new EffectMask(source, source->GetSize(), aTransform);
+  aEffects.mSecondaryEffects[EffectTypes::MASK] = effect;
+  return true;
+}
+
+void CompositableHost::RemoveMaskEffect() {
+  RefPtr<TextureHost> host = GetAsTextureHost();
+  if (host) {
+    host->Unlock();
+  }
+}
+
+/* static */
+already_AddRefed<CompositableHost> CompositableHost::Create(
+    const TextureInfo& aTextureInfo, bool aUseWebRender) {
+  RefPtr<CompositableHost> result;
+  switch (aTextureInfo.mCompositableType) {
+    case CompositableType::IMAGE_BRIDGE:
+      NS_ERROR("Cannot create an image bridge compositable this way");
+      break;
+    case CompositableType::CONTENT_TILED:
+      result = new TiledContentHost(aTextureInfo);
+      break;
+    case CompositableType::IMAGE:
+      if (aUseWebRender) {
+        result = new WebRenderImageHost(aTextureInfo);
+      } else {
+        result = new ImageHost(aTextureInfo);
+      }
+      break;
+    case CompositableType::CONTENT_SINGLE:
+      if (aUseWebRender) {
+        result = new WebRenderImageHost(aTextureInfo);
+      } else {
+        result = new ContentHostSingleBuffered(aTextureInfo);
+      }
+      break;
+    case CompositableType::CONTENT_DOUBLE:
+      MOZ_ASSERT(!aUseWebRender);
+      result = new ContentHostDoubleBuffered(aTextureInfo);
+      break;
+    default:
+      NS_ERROR("Unknown CompositableType");
+  }
+  return result.forget();
+}
+
+void CompositableHost::DumpTextureHost(std::stringstream& aStream,
+                                       TextureHost* aTexture) {
+  if (!aTexture) {
+    return;
+  }
+  RefPtr<gfx::DataSourceSurface> dSurf = aTexture->GetAsSurface();
+  if (!dSurf) {
+    return;
+  }
+  aStream << gfxUtils::GetAsDataURI(dSurf).get();
+}
+
+HostLayerManager* CompositableHost::GetLayerManager() const {
+  if (!mLayer || !mLayer->Manager()) {
+    return nullptr;
+  }
+  return mLayer->Manager()->AsHostLayerManager();
+}
+
+TextureSourceProvider* CompositableHost::GetTextureSourceProvider() const {
+  return mTextureSourceProvider;
+}
+
+}  // namespace layers
+}  // namespace mozilla