1 files changed, 118 insertions, 0 deletions
diff --git a/gfx/gl/SharedSurfaceEGL.h b/gfx/gl/SharedSurfaceEGL.h
new file mode 100644
index 000000000..98d085005
--- /dev/null
+++ b/gfx/gl/SharedSurfaceEGL.h
@@ -0,0 +1,118 @@
+/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
+/* 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 SHARED_SURFACE_EGL_H_
+#define SHARED_SURFACE_EGL_H_
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Mutex.h"
+#include "SharedSurface.h"
+
+namespace mozilla {
+namespace gl {
+
+class GLContext;
+class GLLibraryEGL;
+class TextureGarbageBin;
+
+class SharedSurface_EGLImage
+    : public SharedSurface
+{
+public:
+    static UniquePtr<SharedSurface_EGLImage> Create(GLContext* prodGL,
+                                                    const GLFormats& formats,
+                                                    const gfx::IntSize& size,
+                                                    bool hasAlpha,
+                                                    EGLContext context);
+
+    static SharedSurface_EGLImage* Cast(SharedSurface* surf) {
+        MOZ_ASSERT(surf->mType == SharedSurfaceType::EGLImageShare);
+
+        return (SharedSurface_EGLImage*)surf;
+    }
+
+    static bool HasExtensions(GLLibraryEGL* egl, GLContext* gl);
+
+protected:
+    mutable Mutex mMutex;
+    GLLibraryEGL* const mEGL;
+    const GLFormats mFormats;
+    GLuint mProdTex;
+public:
+    const EGLImage mImage;
+protected:
+    EGLSync mSync;
+
+    SharedSurface_EGLImage(GLContext* gl,
+                           GLLibraryEGL* egl,
+                           const gfx::IntSize& size,
+                           bool hasAlpha,
+                           const GLFormats& formats,
+                           GLuint prodTex,
+                           EGLImage image);
+
+    EGLDisplay Display() const;
+    void UpdateProdTexture(const MutexAutoLock& curAutoLock);
+
+public:
+    virtual ~SharedSurface_EGLImage();
+
+    virtual layers::TextureFlags GetTextureFlags() const override;
+
+    virtual void LockProdImpl() override {}
+    virtual void UnlockProdImpl() override {}
+
+    virtual void ProducerAcquireImpl() override {}
+    virtual void ProducerReleaseImpl() override;
+
+    virtual void ProducerReadAcquireImpl() override;
+    virtual void ProducerReadReleaseImpl() override {};
+
+    virtual GLuint ProdTexture() override {
+      return mProdTex;
+    }
+
+    // Implementation-specific functions below:
+    // Returns texture and target
+    virtual bool ToSurfaceDescriptor(layers::SurfaceDescriptor* const out_descriptor) override;
+
+    virtual bool ReadbackBySharedHandle(gfx::DataSourceSurface* out_surface) override;
+};
+
+
+
+class SurfaceFactory_EGLImage
+    : public SurfaceFactory
+{
+public:
+    // Fallible:
+    static UniquePtr<SurfaceFactory_EGLImage> Create(GLContext* prodGL,
+                                                     const SurfaceCaps& caps,
+                                                     const RefPtr<layers::LayersIPCChannel>& allocator,
+                                                     const layers::TextureFlags& flags);
+
+protected:
+    const EGLContext mContext;
+
+    SurfaceFactory_EGLImage(GLContext* prodGL, const SurfaceCaps& caps,
+                            const RefPtr<layers::LayersIPCChannel>& allocator,
+                            const layers::TextureFlags& flags,
+                            EGLContext context)
+        : SurfaceFactory(SharedSurfaceType::EGLImageShare, prodGL, caps, allocator, flags)
+        , mContext(context)
+    { }
+
+public:
+    virtual UniquePtr<SharedSurface> CreateShared(const gfx::IntSize& size) override {
+        bool hasAlpha = mReadCaps.alpha;
+        return SharedSurface_EGLImage::Create(mGL, mFormats, size, hasAlpha, mContext);
+    }
+};
+
+} // namespace gl
+
+} /* namespace mozilla */
+
+#endif /* SHARED_SURFACE_EGL_H_ */