1 files changed, 100 insertions, 0 deletions
diff --git a/gfx/gl/SharedSurfaceIO.h b/gfx/gl/SharedSurfaceIO.h
new file mode 100644
index 000000000..16e0cbbb7
--- /dev/null
+++ b/gfx/gl/SharedSurfaceIO.h
@@ -0,0 +1,100 @@
+/* -*- 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_SURFACEIO_H_
+#define SHARED_SURFACEIO_H_
+
+#include "mozilla/RefPtr.h"
+#include "SharedSurface.h"
+
+class MacIOSurface;
+
+namespace mozilla {
+namespace gl {
+
+class SharedSurface_IOSurface : public SharedSurface
+{
+private:
+    const RefPtr<MacIOSurface> mIOSurf;
+    GLuint mProdTex;
+
+public:
+    static UniquePtr<SharedSurface_IOSurface> Create(const RefPtr<MacIOSurface>& ioSurf,
+                                                     GLContext* gl,
+                                                     bool hasAlpha);
+
+private:
+    SharedSurface_IOSurface(const RefPtr<MacIOSurface>& ioSurf,
+                            GLContext* gl, const gfx::IntSize& size,
+                            bool hasAlpha);
+
+public:
+    ~SharedSurface_IOSurface();
+
+    virtual void LockProdImpl() override { }
+    virtual void UnlockProdImpl() override { }
+
+    virtual void ProducerAcquireImpl() override {}
+    virtual void ProducerReleaseImpl() override;
+
+    virtual bool CopyTexImage2D(GLenum target, GLint level, GLenum internalformat,
+                                GLint x, GLint y, GLsizei width, GLsizei height,
+                                GLint border) override;
+    virtual bool ReadPixels(GLint x, GLint y, GLsizei width, GLsizei height,
+                            GLenum format, GLenum type, GLvoid* pixels) override;
+
+    virtual GLuint ProdTexture() override {
+        return mProdTex;
+    }
+
+    virtual GLenum ProdTextureTarget() const override {
+        return LOCAL_GL_TEXTURE_RECTANGLE_ARB;
+    }
+
+    static SharedSurface_IOSurface* Cast(SharedSurface* surf) {
+        MOZ_ASSERT(surf->mType == SharedSurfaceType::IOSurface);
+        return static_cast<SharedSurface_IOSurface*>(surf);
+    }
+
+    MacIOSurface* GetIOSurface() const {
+        return mIOSurf;
+    }
+
+    virtual bool NeedsIndirectReads() const override {
+        return true;
+    }
+
+    virtual bool ToSurfaceDescriptor(layers::SurfaceDescriptor* const out_descriptor) override;
+
+    virtual bool ReadbackBySharedHandle(gfx::DataSourceSurface* out_surface) override;
+};
+
+class SurfaceFactory_IOSurface : public SurfaceFactory
+{
+public:
+    // Infallible.
+    static UniquePtr<SurfaceFactory_IOSurface> Create(GLContext* gl,
+                                                      const SurfaceCaps& caps,
+                                                      const RefPtr<layers::LayersIPCChannel>& allocator,
+                                                      const layers::TextureFlags& flags);
+protected:
+    const gfx::IntSize mMaxDims;
+
+    SurfaceFactory_IOSurface(GLContext* gl, const SurfaceCaps& caps,
+                             const RefPtr<layers::LayersIPCChannel>& allocator,
+                             const layers::TextureFlags& flags,
+                             const gfx::IntSize& maxDims)
+        : SurfaceFactory(SharedSurfaceType::IOSurface, gl, caps, allocator, flags)
+        , mMaxDims(maxDims)
+    { }
+
+    virtual UniquePtr<SharedSurface> CreateShared(const gfx::IntSize& size) override;
+};
+
+} // namespace gl
+
+} /* namespace mozilla */
+
+#endif /* SHARED_SURFACEIO_H_ */