The Tor Browser: comparison gfx/layers/composite/CompositableHost.cpp

--1:000000000000
+:56c2e9de2977
+/* -*- 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 "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 "ImageHost.h"                  // for ImageHostBuffered, etc
+#include "TiledContentHost.h"           // for TiledContentHost
+#include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor
+#include "mozilla/layers/TextureHost.h"  // for TextureHost, etc
+#include "nsAutoPtr.h"                  // for nsRefPtr
+#include "nsDebug.h"                    // for NS_WARNING
+#include "nsISupportsImpl.h"            // for MOZ_COUNT_CTOR, etc
+#include "gfxPlatform.h"                // for gfxPlatform
+namespace mozilla {
+namespace layers {
+class Compositor;
+/**
+* IPDL actor used by CompositableHost to match with its corresponding
+* CompositableClient on the content side.
+*
+* CompositableParent is owned by the IPDL system. It's deletion is triggered
+* by either the CompositableChild's deletion, or by the IPDL communication
+* goind down.
+*/
+class CompositableParent : public PCompositableParent
+{
+public:
+CompositableParent(CompositableParentManager* aMgr,
+const TextureInfo& aTextureInfo,
+uint64_t aID = 0)
+{
+MOZ_COUNT_CTOR(CompositableParent);
+mHost = CompositableHost::Create(aTextureInfo);
+mHost->SetAsyncID(aID);
+if (aID) {
+CompositableMap::Set(aID, this);
+}
+}
+~CompositableParent()
+{
+MOZ_COUNT_DTOR(CompositableParent);
+CompositableMap::Erase(mHost->GetAsyncID());
+}
+virtual void ActorDestroy(ActorDestroyReason why) MOZ_OVERRIDE
+{
+if (mHost) {
+mHost->Detach(nullptr, CompositableHost::FORCE_DETACH);
+}
+}
+RefPtr<CompositableHost> mHost;
+};
+CompositableHost::CompositableHost(const TextureInfo& aTextureInfo)
+: mTextureInfo(aTextureInfo)
+, mAsyncID(0)
+, mCompositorID(0)
+, mCompositor(nullptr)
+, mLayer(nullptr)
+, mFlashCounter(0)
+, mAttached(false)
+, mKeepAttached(false)
+{
+MOZ_COUNT_CTOR(CompositableHost);
+}
+CompositableHost::~CompositableHost()
+{
+MOZ_COUNT_DTOR(CompositableHost);
+if (mBackendData) {
+mBackendData->ClearData();
+}
+}
+PCompositableParent*
+CompositableHost::CreateIPDLActor(CompositableParentManager* aMgr,
+const TextureInfo& aTextureInfo,
+uint64_t aID)
+{
+return new CompositableParent(aMgr, aTextureInfo, aID);
+}
+bool
+CompositableHost::DestroyIPDLActor(PCompositableParent* aActor)
+{
+delete aActor;
+return true;
+}
+CompositableHost*
+CompositableHost::FromIPDLActor(PCompositableParent* aActor)
+{
+MOZ_ASSERT(aActor);
+return static_cast<CompositableParent*>(aActor)->mHost;
+}
+void
+CompositableHost::UseTextureHost(TextureHost* aTexture)
+{
+if (!aTexture) {
+return;
+}
+aTexture->SetCompositor(GetCompositor());
+aTexture->SetCompositableBackendSpecificData(GetCompositableBackendSpecificData());
+}
+void
+CompositableHost::UseComponentAlphaTextures(TextureHost* aTextureOnBlack,
+TextureHost* aTextureOnWhite)
+{
+MOZ_ASSERT(aTextureOnBlack && aTextureOnWhite);
+aTextureOnBlack->SetCompositor(GetCompositor());
+aTextureOnBlack->SetCompositableBackendSpecificData(GetCompositableBackendSpecificData());
+aTextureOnWhite->SetCompositor(GetCompositor());
+aTextureOnWhite->SetCompositableBackendSpecificData(GetCompositableBackendSpecificData());
+}
+void
+CompositableHost::RemoveTextureHost(TextureHost* aTexture)
+{
+// Clear strong refrence to CompositableBackendSpecificData
+aTexture->SetCompositableBackendSpecificData(nullptr);
+}
+void
+CompositableHost::SetCompositor(Compositor* aCompositor)
+{
+mCompositor = aCompositor;
+}
+bool
+CompositableHost::AddMaskEffect(EffectChain& aEffects,
+const gfx::Matrix4x4& aTransform,
+bool aIs3D)
+{
+RefPtr<TextureSource> source;
+RefPtr<TextureHost> host = GetAsTextureHost();
+if (host && host->Lock()) {
+source = host->GetTextureSources();
+}
+if (!source) {
+NS_WARNING("Using compositable with no texture host as mask layer");
+return false;
+}
+RefPtr<EffectMask> effect = new EffectMask(source,
+source->GetSize(),
+aTransform);
+effect->mIs3D = aIs3D;
+aEffects.mSecondaryEffects[EFFECT_MASK] = effect;
+return true;
+}
+void
+CompositableHost::RemoveMaskEffect()
+{
+RefPtr<TextureHost> host = GetAsTextureHost();
+if (host) {
+host->Unlock();
+}
+}
+// implemented in TextureHostOGL.cpp
+TemporaryRef<CompositableBackendSpecificData> CreateCompositableBackendSpecificDataOGL();
+/* static */ TemporaryRef<CompositableHost>
+CompositableHost::Create(const TextureInfo& aTextureInfo)
+{
+RefPtr<CompositableHost> result;
+switch (aTextureInfo.mCompositableType) {
+case BUFFER_BRIDGE:
+NS_ERROR("Cannot create an image bridge compositable this way");
+break;
+case BUFFER_CONTENT_INC:
+result = new ContentHostIncremental(aTextureInfo);
+break;
+case BUFFER_TILED:
+case BUFFER_SIMPLE_TILED:
+result = new TiledContentHost(aTextureInfo);
+break;
+case COMPOSITABLE_IMAGE:
+result = new ImageHost(aTextureInfo);
+break;
+case COMPOSITABLE_CONTENT_SINGLE:
+result = new ContentHostSingleBuffered(aTextureInfo);
+break;
+case COMPOSITABLE_CONTENT_DOUBLE:
+result = new ContentHostDoubleBuffered(aTextureInfo);
+break;
+default:
+NS_ERROR("Unknown CompositableType");
+}
+// We know that Tiled buffers don't use the compositable backend-specific
+// data, so don't bother creating it.
+if (result && aTextureInfo.mCompositableType != BUFFER_TILED) {
+RefPtr<CompositableBackendSpecificData> data = CreateCompositableBackendSpecificDataOGL();
+result->SetCompositableBackendSpecificData(data);
+}
+return result;
+}
+#ifdef MOZ_DUMP_PAINTING
+void
+CompositableHost::DumpTextureHost(FILE* aFile, TextureHost* aTexture)
+{
+if (!aTexture) {
+return;
+}
+RefPtr<gfx::DataSourceSurface> dSurf = aTexture->GetAsSurface();
+if (!dSurf) {
+return;
+}
+gfxPlatform *platform = gfxPlatform::GetPlatform();
+RefPtr<gfx::DrawTarget> dt = platform->CreateDrawTargetForData(dSurf->GetData(),
+dSurf->GetSize(),
+dSurf->Stride(),
+dSurf->GetFormat());
+nsRefPtr<gfxASurface> surf = platform->GetThebesSurfaceForDrawTarget(dt);
+if (!surf) {
+return;
+}
+surf->DumpAsDataURL(aFile ? aFile : stderr);
+}
+#endif
+namespace CompositableMap {
+typedef std::map<uint64_t, PCompositableParent*> CompositableMap_t;
+static CompositableMap_t* sCompositableMap = nullptr;
+bool IsCreated() {
+return sCompositableMap != nullptr;
+}
+PCompositableParent* Get(uint64_t aID)
+{
+if (!IsCreated() || aID == 0) {
+return nullptr;
+}
+CompositableMap_t::iterator it = sCompositableMap->find(aID);
+if (it == sCompositableMap->end()) {
+return nullptr;
+}
+return it->second;
+}
+void Set(uint64_t aID, PCompositableParent* aParent)
+{
+if (!IsCreated() || aID == 0) {
+return;
+}
+(*sCompositableMap)[aID] = aParent;
+}
+void Erase(uint64_t aID)
+{
+if (!IsCreated() || aID == 0) {
+return;
+}
+CompositableMap_t::iterator it = sCompositableMap->find(aID);
+if (it != sCompositableMap->end()) {
+sCompositableMap->erase(it);
+}
+}
+void Clear()
+{
+if (!IsCreated()) {
+return;
+}
+sCompositableMap->clear();
+}
+void Create()
+{
+if (sCompositableMap == nullptr) {
+sCompositableMap = new CompositableMap_t;
+}
+}
+void Destroy()
+{
+Clear();
+delete sCompositableMap;
+sCompositableMap = nullptr;
+}
+} // namespace CompositableMap
+} // namespace layers
+} // namespace mozilla

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comparison: gfx/layers/composite/CompositableHost.cpp

gfx/layers/composite/CompositableHost.cpp