Issue #1829 - Revert "Issue #1751"

gfx/layers/basic/MacIOSurfaceTextureHostBasic.cpp

@@ -0,0 +1,107 @@
+/* -*- 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 "MacIOSurfaceTextureHostBasic.h"
+#include "mozilla/gfx/MacIOSurface.h"
+#include "MacIOSurfaceHelpers.h"
+
+namespace mozilla {
+namespace layers {
+
+MacIOSurfaceTextureSourceBasic::MacIOSurfaceTextureSourceBasic(
+                                BasicCompositor* aCompositor,
+                                MacIOSurface* aSurface)
+  : mCompositor(aCompositor)
+  , mSurface(aSurface)
+{
+  MOZ_COUNT_CTOR(MacIOSurfaceTextureSourceBasic);
+}
+
+MacIOSurfaceTextureSourceBasic::~MacIOSurfaceTextureSourceBasic()
+{
+  MOZ_COUNT_DTOR(MacIOSurfaceTextureSourceBasic);
+}
+
+gfx::IntSize
+MacIOSurfaceTextureSourceBasic::GetSize() const
+{
+  return gfx::IntSize(mSurface->GetDevicePixelWidth(),
+                      mSurface->GetDevicePixelHeight());
+}
+
+gfx::SurfaceFormat
+MacIOSurfaceTextureSourceBasic::GetFormat() const
+{
+  // Set the format the same way as CreateSourceSurfaceFromMacIOSurface.
+  return mSurface->GetFormat() == gfx::SurfaceFormat::NV12
+    ? gfx::SurfaceFormat::B8G8R8X8 : gfx::SurfaceFormat::B8G8R8A8;
+}
+
+MacIOSurfaceTextureHostBasic::MacIOSurfaceTextureHostBasic(
+    TextureFlags aFlags,
+    const SurfaceDescriptorMacIOSurface& aDescriptor
+)
+  : TextureHost(aFlags)
+{
+  mSurface = MacIOSurface::LookupSurface(aDescriptor.surfaceId(),
+                                         aDescriptor.scaleFactor(),
+                                         !aDescriptor.isOpaque());
+}
+
+gfx::SourceSurface*
+MacIOSurfaceTextureSourceBasic::GetSurface(gfx::DrawTarget* aTarget)
+{
+  if (!mSourceSurface) {
+    mSourceSurface = CreateSourceSurfaceFromMacIOSurface(mSurface);
+  }
+  return mSourceSurface;
+}
+
+void
+MacIOSurfaceTextureSourceBasic::SetCompositor(Compositor* aCompositor)
+{
+  mCompositor = AssertBasicCompositor(aCompositor);
+}
+
+bool
+MacIOSurfaceTextureHostBasic::Lock()
+{
+  if (!mCompositor) {
+    return false;
+  }
+
+  if (!mTextureSource) {
+    mTextureSource = new MacIOSurfaceTextureSourceBasic(mCompositor, mSurface);
+  }
+  return true;
+}
+
+void
+MacIOSurfaceTextureHostBasic::SetCompositor(Compositor* aCompositor)
+{
+  BasicCompositor* compositor = AssertBasicCompositor(aCompositor);
+  if (!compositor) {
+    mTextureSource = nullptr;
+    return;
+  }
+  mCompositor = compositor;
+  if (mTextureSource) {
+    mTextureSource->SetCompositor(compositor);
+  }
+}
+
+gfx::SurfaceFormat
+MacIOSurfaceTextureHostBasic::GetFormat() const {
+  return mSurface->HasAlpha() ? gfx::SurfaceFormat::R8G8B8A8 : gfx::SurfaceFormat::B8G8R8X8;
+}
+
+gfx::IntSize
+MacIOSurfaceTextureHostBasic::GetSize() const {
+  return gfx::IntSize(mSurface->GetDevicePixelWidth(),
+                      mSurface->GetDevicePixelHeight());
+}
+
+} // namespace layers
+} // namespace mozilla