import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

gfx/layers/opengl/TextureClientOGL.cpp

@@ -0,0 +1,136 @@
+/* -*- 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 "GLContext.h"                  // for GLContext, etc
+#include "mozilla/Assertions.h"         // for MOZ_ASSERT, etc
+#include "mozilla/layers/ISurfaceAllocator.h"
+#include "mozilla/layers/TextureClientOGL.h"
+#include "mozilla/gfx/Point.h"          // for IntSize
+#include "GLLibraryEGL.h"
+
+using namespace mozilla::gl;
+
+namespace mozilla {
+namespace layers {
+
+class CompositableForwarder;
+
+////////////////////////////////////////////////////////////////////////
+// EGLImage
+
+EGLImageTextureData::EGLImageTextureData(EGLImageImage* aImage, gfx::IntSize aSize)
+: mImage(aImage)
+, mSize(aSize)
+{
+  MOZ_ASSERT(aImage);
+}
+
+already_AddRefed<TextureClient>
+EGLImageTextureData::CreateTextureClient(EGLImageImage* aImage, gfx::IntSize aSize,
+                                         LayersIPCChannel* aAllocator, TextureFlags aFlags)
+{
+  MOZ_ASSERT(XRE_IsParentProcess(),
+             "Can't pass an `EGLImage` between processes.");
+
+  if (!aImage || !XRE_IsParentProcess()) {
+    return nullptr;
+  }
+
+  // XXX - This is quite sad and slow.
+  aFlags |= TextureFlags::DEALLOCATE_CLIENT;
+
+  if (aImage->GetOriginPos() == gl::OriginPos::BottomLeft) {
+    aFlags |= TextureFlags::ORIGIN_BOTTOM_LEFT;
+  }
+
+  return TextureClient::CreateWithData(
+    new EGLImageTextureData(aImage, aSize),
+    aFlags, aAllocator
+  );
+}
+
+void
+EGLImageTextureData::FillInfo(TextureData::Info& aInfo) const
+{
+  aInfo.size = mSize;
+  aInfo.format = gfx::SurfaceFormat::UNKNOWN;
+  aInfo.hasIntermediateBuffer = false;
+  aInfo.hasSynchronization = false;
+  aInfo.supportsMoz2D = false;
+  aInfo.canExposeMappedData = false;
+}
+
+bool
+EGLImageTextureData::Serialize(SurfaceDescriptor& aOutDescriptor)
+{
+  const bool hasAlpha = true;
+  aOutDescriptor =
+    EGLImageDescriptor((uintptr_t)mImage->GetImage(),
+                       (uintptr_t)mImage->GetSync(),
+                       mImage->GetSize(), hasAlpha);
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////
+// AndroidSurface
+
+#ifdef MOZ_WIDGET_ANDROID
+
+already_AddRefed<TextureClient>
+AndroidSurfaceTextureData::CreateTextureClient(AndroidSurfaceTexture* aSurfTex,
+                                               gfx::IntSize aSize,
+                                               gl::OriginPos aOriginPos,
+                                               LayersIPCChannel* aAllocator,
+                                               TextureFlags aFlags)
+{
+  MOZ_ASSERT(XRE_IsParentProcess(),
+             "Can't pass an android surfaces between processes.");
+
+  if (!aSurfTex || !XRE_IsParentProcess()) {
+    return nullptr;
+  }
+
+  if (aOriginPos == gl::OriginPos::BottomLeft) {
+    aFlags |= TextureFlags::ORIGIN_BOTTOM_LEFT;
+  }
+
+  return TextureClient::CreateWithData(
+    new AndroidSurfaceTextureData(aSurfTex, aSize),
+    aFlags, aAllocator
+  );
+}
+
+AndroidSurfaceTextureData::AndroidSurfaceTextureData(AndroidSurfaceTexture* aSurfTex,
+                                                     gfx::IntSize aSize)
+  : mSurfTex(aSurfTex)
+  , mSize(aSize)
+{}
+
+AndroidSurfaceTextureData::~AndroidSurfaceTextureData()
+{}
+
+void
+AndroidSurfaceTextureData::FillInfo(TextureData::Info& aInfo) const
+{
+  aInfo.size = mSize;
+  aInfo.format = gfx::SurfaceFormat::UNKNOWN;
+  aInfo.hasIntermediateBuffer = false;
+  aInfo.hasSynchronization = false;
+  aInfo.supportsMoz2D = false;
+  aInfo.canExposeMappedData = false;
+}
+
+bool
+AndroidSurfaceTextureData::Serialize(SurfaceDescriptor& aOutDescriptor)
+{
+  aOutDescriptor = SurfaceTextureDescriptor((uintptr_t)mSurfTex.get(),
+                                            mSize);
+  return true;
+}
+
+#endif // MOZ_WIDGET_ANDROID
+
+} // namespace layers
+} // namespace mozilla