Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 138 insertions, 0 deletions

diff --git a/gfx/layers/composite/ImageHost.h b/gfx/layers/composite/ImageHost.h
new file mode 100644
index 0000000000..5d712d5bdd
--- /dev/null
+++ b/gfx/layers/composite/ImageHost.h
@@ -0,0 +1,138 @@
+/* -*- 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/. */
+
+#ifndef MOZILLA_GFX_IMAGEHOST_H
+#define MOZILLA_GFX_IMAGEHOST_H
+
+#include <stdio.h>                           // for FILE
+#include "CompositableHost.h"                // for CompositableHost
+#include "mozilla/Attributes.h"              // for override
+#include "mozilla/RefPtr.h"                  // for RefPtr
+#include "mozilla/gfx/MatrixFwd.h"           // for Matrix4x4
+#include "mozilla/gfx/Point.h"               // for Point
+#include "mozilla/gfx/Polygon.h"             // for Polygon
+#include "mozilla/gfx/Rect.h"                // for Rect
+#include "mozilla/gfx/Types.h"               // for SamplingFilter
+#include "mozilla/layers/CompositorTypes.h"  // for TextureInfo, etc
+#include "mozilla/layers/ImageComposite.h"   // for ImageComposite
+#include "mozilla/layers/LayersSurfaces.h"   // for SurfaceDescriptor
+#include "mozilla/layers/LayersTypes.h"      // for LayerRenderState, etc
+#include "mozilla/layers/TextureHost.h"      // for TextureHost, etc
+#include "mozilla/mozalloc.h"                // for operator delete
+#include "nsCOMPtr.h"                        // for already_AddRefed
+#include "nsRect.h"                          // for mozilla::gfx::IntRect
+#include "nsRegionFwd.h"                     // for nsIntRegion
+#include "nscore.h"                          // for nsACString
+
+namespace mozilla {
+namespace layers {
+
+class Compositor;
+struct EffectChain;
+class HostLayerManager;
+
+/**
+ * ImageHost. Works with ImageClientSingle and ImageClientBuffered
+ */
+class ImageHost : public CompositableHost, public ImageComposite {
+ public:
+  explicit ImageHost(const TextureInfo& aTextureInfo);
+  virtual ~ImageHost();
+
+  CompositableType GetType() override { return mTextureInfo.mCompositableType; }
+  ImageHost* AsImageHost() override { return this; }
+
+  void Composite(Compositor* aCompositor, LayerComposite* aLayer,
+                 EffectChain& aEffectChain, float aOpacity,
+                 const gfx::Matrix4x4& aTransform,
+                 const gfx::SamplingFilter aSamplingFilter,
+                 const gfx::IntRect& aClipRect,
+                 const nsIntRegion* aVisibleRegion = nullptr,
+                 const Maybe<gfx::Polygon>& aGeometry = Nothing()) override;
+
+  void UseTextureHost(const nsTArray<TimedTexture>& aTextures) override;
+
+  void RemoveTextureHost(TextureHost* aTexture) override;
+
+  TextureHost* GetAsTextureHost(gfx::IntRect* aPictureRect = nullptr) override;
+
+  void Attach(Layer* aLayer, TextureSourceProvider* aProvider,
+              AttachFlags aFlags = NO_FLAGS) override;
+
+  void SetTextureSourceProvider(TextureSourceProvider* aProvider) override;
+
+  gfx::IntSize GetImageSize() override;
+
+  void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
+
+  void Dump(std::stringstream& aStream, const char* aPrefix = "",
+            bool aDumpHtml = false) override;
+
+  already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override;
+
+  bool Lock() override;
+
+  void Unlock() override;
+
+  already_AddRefed<TexturedEffect> GenEffect(
+      const gfx::SamplingFilter aSamplingFilter) override;
+
+  void SetCurrentTextureHost(TextureHost* aTexture);
+
+  void CleanupResources() override;
+
+  bool IsOpaque();
+
+  uint32_t GetDroppedFrames() override { return GetDroppedFramesAndReset(); }
+
+  struct RenderInfo {
+    int imageIndex;
+    const TimedImage* img;
+    RefPtr<TextureHost> host;
+
+    RenderInfo() : imageIndex(-1), img(nullptr) {}
+  };
+
+  // Acquire rendering information for the current frame.
+  bool PrepareToRender(TextureSourceProvider* aProvider, RenderInfo* aOutInfo);
+
+  // Acquire the TextureSource for the currently prepared frame.
+  RefPtr<TextureSource> AcquireTextureSource(const RenderInfo& aInfo);
+
+  // Send ImageComposite notifications.
+  void FinishRendering(const RenderInfo& aInfo);
+
+  // This should only be called inside a lock, or during rendering. It is
+  // infallible to enforce this.
+  TextureHost* CurrentTextureHost() const {
+    MOZ_ASSERT(mCurrentTextureHost);
+    return mCurrentTextureHost;
+  }
+
+ protected:
+  // ImageComposite
+  TimeStamp GetCompositionTime() const override;
+  CompositionOpportunityId GetCompositionOpportunityId() const override;
+  void AppendImageCompositeNotification(
+      const ImageCompositeNotificationInfo& aInfo) const override;
+
+  // Use a simple RefPtr because the same texture is already held by a
+  // a CompositableTextureHostRef in the array of TimedImage.
+  // See the comment in CompositableTextureRef for more details.
+  RefPtr<TextureHost> mCurrentTextureHost;
+  CompositableTextureSourceRef mCurrentTextureSource;
+  // When doing texture uploads it's best to alternate between two (or three)
+  // texture sources so that the texture we upload to isn't being used by
+  // the GPU to composite the previous frame.
+  RefPtr<TextureSource> mExtraTextureSource;
+
+  bool mLocked;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif