1 files changed, 76 insertions, 0 deletions
diff --git a/gfx/2d/SourceSurfaceCapture.h b/gfx/2d/SourceSurfaceCapture.h
new file mode 100644
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+++ b/gfx/2d/SourceSurfaceCapture.h
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+/* -*- 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_2d_SourceSurfaceCapture_h
+#define mozilla_gfx_2d_SourceSurfaceCapture_h
+
+#include "2D.h"
+#include "CaptureCommandList.h"
+#include "mozilla/Mutex.h"
+
+namespace mozilla {
+namespace gfx {
+
+class DrawTargetCaptureImpl;
+
+class SourceSurfaceCapture : public SourceSurface {
+  friend class DrawTargetCaptureImpl;
+
+ public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(SourceSurfaceCapture, override)
+
+  explicit SourceSurfaceCapture(DrawTargetCaptureImpl* aOwner);
+  SourceSurfaceCapture(DrawTargetCaptureImpl* aOwner,
+                       LuminanceType aLuminanceType, float aOpacity);
+  SourceSurfaceCapture(DrawTargetCaptureImpl* aOwner,
+                       SourceSurface* aSurfToOptimize);
+  virtual ~SourceSurfaceCapture();
+
+  SurfaceType GetType() const override { return SurfaceType::CAPTURE; }
+  IntSize GetSize() const override { return mSize; }
+  SurfaceFormat GetFormat() const override { return mFormat; }
+
+  void SizeOfExcludingThis(MallocSizeOf aMallocSizeOf,
+                           SizeOfInfo& aInfo) const override;
+
+  bool IsValid() const override;
+  already_AddRefed<DataSourceSurface> GetDataSurface() override;
+
+  // The backend hint is not guaranteed to be honored, so callers must check
+  // the resulting type if needed.
+  RefPtr<SourceSurface> Resolve(BackendType aBackendType = BackendType::NONE);
+
+ protected:
+  RefPtr<SourceSurface> ResolveImpl(BackendType aBackendType);
+  void DrawTargetWillDestroy();
+  void DrawTargetWillChange();
+
+ private:
+  IntSize mSize;
+  SurfaceFormat mFormat;
+  int32_t mStride;
+  int32_t mSurfaceAllocationSize;
+  RefPtr<DrawTarget> mRefDT;
+  DrawTargetCaptureImpl* mOwner;
+  CaptureCommandList mCommands;
+  bool mHasCommandList;
+
+  bool mShouldResolveToLuminance;
+  LuminanceType mLuminanceType;
+  float mOpacity;
+
+  // Note that we have to keep a reference around. Internal methods like
+  // GetSkImageForSurface expect their callers to hold a reference, which
+  // isn't easily possible for nested surfaces.
+  mutable Mutex mLock;
+  RefPtr<SourceSurface> mResolved;
+  RefPtr<SourceSurface> mSurfToOptimize;
+};
+
+}  // namespace gfx
+}  // namespace mozilla
+
+#endif  // mozilla_gfx_2d_SourceSurfaceCapture_h