From 424ec279d90bfd418077d022363cb29f3e4a33a6 Mon Sep 17 00:00:00 2001
From: Nicolas Silva <nsilva@mozilla.com>
Date: Fri, 20 Nov 2015 14:24:46 +0100
Subject: [PATCH] Bug 1200595 - MacIOSurface TextureData implementation.
 r=mattwoodrow

---
 gfx/layers/MacIOSurfaceImage.cpp              |  8 +-
 .../opengl/MacIOSurfaceTextureClientOGL.cpp   | 81 +++++++------------
 .../opengl/MacIOSurfaceTextureClientOGL.h     | 47 +++++------
 3 files changed, 53 insertions(+), 83 deletions(-)

diff --git a/gfx/layers/MacIOSurfaceImage.cpp b/gfx/layers/MacIOSurfaceImage.cpp
index 4587e1845019..e8817f163458 100644
--- a/gfx/layers/MacIOSurfaceImage.cpp
+++ b/gfx/layers/MacIOSurfaceImage.cpp
@@ -18,9 +18,11 @@ TextureClient*
 MacIOSurfaceImage::GetTextureClient(CompositableClient* aClient)
 {
   if (!mTextureClient) {
-    mTextureClient = MacIOSurfaceTextureClientOGL::Create(aClient->GetForwarder(),
-                                                          TextureFlags::DEFAULT,
-                                                          mSurface);
+    mTextureClient = TextureClient::CreateWithData(
+      MacIOSurfaceTextureData::Create(mSurface),
+      TextureFlags::DEFAULT,
+      aClient->GetForwarder()
+    );
   }
   return mTextureClient;
 }
diff --git a/gfx/layers/opengl/MacIOSurfaceTextureClientOGL.cpp b/gfx/layers/opengl/MacIOSurfaceTextureClientOGL.cpp
index fbefd06c8f65..29f01f299efe 100644
--- a/gfx/layers/opengl/MacIOSurfaceTextureClientOGL.cpp
+++ b/gfx/layers/opengl/MacIOSurfaceTextureClientOGL.cpp
@@ -4,71 +4,42 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "MacIOSurfaceTextureClientOGL.h"
-#include "mozilla/gfx/MacIOSurface.h"
+#include "mozilla/gfx/MacIOSurface.h" 
 
 namespace mozilla {
 namespace layers {
 
-MacIOSurfaceTextureClientOGL::MacIOSurfaceTextureClientOGL(ISurfaceAllocator* aAllcator,
-                                                           TextureFlags aFlags)
-  : TextureClient(aAllcator, aFlags)
-  , mIsLocked(false)
-{}
-
-MacIOSurfaceTextureClientOGL::~MacIOSurfaceTextureClientOGL()
+MacIOSurfaceTextureData::MacIOSurfaceTextureData(MacIOSurface* aSurface)
+: mSurface(aSurface)
 {
+  MOZ_ASSERT(mSurface);
 }
 
+MacIOSurfaceTextureData::~MacIOSurfaceTextureData()
+{}
+
 void
-MacIOSurfaceTextureClientOGL::FinalizeOnIPDLThread()
+MacIOSurfaceTextureData::FinalizeOnIPDLThread(TextureClient* aWrapper)
 {
-  if (mActor && mSurface) {
-    KeepUntilFullDeallocation(MakeUnique<TKeepAlive<MacIOSurface>>(mSurface));
+  if (mSurface) {
+    aWrapper->KeepUntilFullDeallocation(MakeUnique<TKeepAlive<MacIOSurface>>(mSurface));
   }
 }
 
 // static
-already_AddRefed<MacIOSurfaceTextureClientOGL>
-MacIOSurfaceTextureClientOGL::Create(ISurfaceAllocator* aAllocator,
-                                     TextureFlags aFlags,
-                                     MacIOSurface* aSurface)
+MacIOSurfaceTextureData*
+MacIOSurfaceTextureData::Create(MacIOSurface* aSurface)
 {
-  RefPtr<MacIOSurfaceTextureClientOGL> texture =
-      new MacIOSurfaceTextureClientOGL(aAllocator, aFlags);
-  MOZ_ASSERT(texture->IsValid());
-  MOZ_ASSERT(!texture->IsAllocated());
-  texture->mSurface = aSurface;
-  return texture.forget();
-}
-
-bool
-MacIOSurfaceTextureClientOGL::Lock(OpenMode aMode)
-{
-  MOZ_ASSERT(!mIsLocked);
-  mIsLocked = true;
-  return IsValid() && IsAllocated();
-}
-
-void
-MacIOSurfaceTextureClientOGL::Unlock()
-{
-  MOZ_ASSERT(mIsLocked);
-  mIsLocked = false;
-}
-
-bool
-MacIOSurfaceTextureClientOGL::IsLocked() const
-{
-  return mIsLocked;
-}
-
-bool
-MacIOSurfaceTextureClientOGL::ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor)
-{
-  MOZ_ASSERT(IsValid());
-  if (!IsAllocated()) {
-    return false;
+  MOZ_ASSERT(aSurface);
+  if (!aSurface) {
+    return nullptr;
   }
+  return new MacIOSurfaceTextureData(aSurface);
+}
+
+bool
+MacIOSurfaceTextureData::Serialize(SurfaceDescriptor& aOutDescriptor)
+{
   aOutDescriptor = SurfaceDescriptorMacIOSurface(mSurface->GetIOSurfaceID(),
                                                  mSurface->GetContentsScaleFactor(),
                                                  !mSurface->HasAlpha());
@@ -76,13 +47,19 @@ MacIOSurfaceTextureClientOGL::ToSurfaceDescriptor(SurfaceDescriptor& aOutDescrip
 }
 
 gfx::IntSize
-MacIOSurfaceTextureClientOGL::GetSize() const
+MacIOSurfaceTextureData::GetSize() const
 {
   return gfx::IntSize(mSurface->GetDevicePixelWidth(), mSurface->GetDevicePixelHeight());
 }
 
+gfx::SurfaceFormat
+MacIOSurfaceTextureData::GetFormat() const
+{
+  return mSurface->GetFormat();
+}
+
 already_AddRefed<gfx::DataSourceSurface>
-MacIOSurfaceTextureClientOGL::GetAsSurface()
+MacIOSurfaceTextureData::GetAsSurface()
 {
   RefPtr<gfx::SourceSurface> surf = mSurface->GetAsSurface();
   return surf->GetDataSurface();
diff --git a/gfx/layers/opengl/MacIOSurfaceTextureClientOGL.h b/gfx/layers/opengl/MacIOSurfaceTextureClientOGL.h
index 7548beeafdc7..cc6fec4d700d 100644
--- a/gfx/layers/opengl/MacIOSurfaceTextureClientOGL.h
+++ b/gfx/layers/opengl/MacIOSurfaceTextureClientOGL.h
@@ -13,47 +13,38 @@ class MacIOSurface;
 namespace mozilla {
 namespace layers {
 
-class MacIOSurfaceTextureClientOGL : public TextureClient
+class MacIOSurfaceTextureData : public TextureData
 {
 public:
-  explicit MacIOSurfaceTextureClientOGL(ISurfaceAllocator* aAllcator,
-                                        TextureFlags aFlags);
+  static MacIOSurfaceTextureData* Create(MacIOSurface* aSurface);
 
-  virtual ~MacIOSurfaceTextureClientOGL();
-
-  // Creates a TextureClient and init width.
-  static already_AddRefed<MacIOSurfaceTextureClientOGL>
-  Create(ISurfaceAllocator* aAllocator,
-         TextureFlags aFlags,
-         MacIOSurface* aSurface);
-
-  virtual bool Lock(OpenMode aMode) override;
-
-  virtual void Unlock() override;
-
-  virtual bool IsLocked() const override;
-
-  virtual bool IsAllocated() const override { return !!mSurface; }
-
-  virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) override;
+  ~MacIOSurfaceTextureData();
 
   virtual gfx::IntSize GetSize() const override;
 
+  virtual gfx::SurfaceFormat GetFormat() const override;
+
+  virtual bool Lock(OpenMode, FenceHandle*) override { return true; }
+
+  virtual void Unlock() override {}
+
+  virtual bool Serialize(SurfaceDescriptor& aOutDescriptor) override;
+
   virtual bool HasInternalBuffer() const override { return false; }
 
-  virtual already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override;
+  virtual void Deallocate(ISurfaceAllocator* aAllocator) override { mSurface = nullptr; }
 
-  // This TextureClient should not be used in a context where we use CreateSimilar
-  // (ex. component alpha) because the underlying texture data is always created by
-  // an external producer.
-  virtual already_AddRefed<TextureClient>
-  CreateSimilar(TextureFlags, TextureAllocationFlags) const override { return nullptr; }
+  virtual void Forget(ISurfaceAllocator* aAllocator) override { mSurface = nullptr; }
+
+  // For debugging purposes only.
+  already_AddRefed<gfx::DataSourceSurface> GetAsSurface();
 
 protected:
-  virtual void FinalizeOnIPDLThread() override;
+  explicit MacIOSurfaceTextureData(MacIOSurface* aSurface);
+
+  virtual void FinalizeOnIPDLThread(TextureClient* aWrapper) override;
 
   RefPtr<MacIOSurface> mSurface;
-  bool mIsLocked;
 };
 
 } // namespace layers