content/common/gpu/image_transport_surface_iosurface_mac.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_IOSURFACE_MAC_H_
   6 #define CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_IOSURFACE_MAC_H_
   7
   8 #include <list>
   9
  10 #include "content/common/gpu/image_transport_surface_fbo_mac.h"
  11 #include "ui/gl/gl_bindings.h"
  12
  13 // Note that this must be included after gl_bindings.h to avoid conflicts.
  14 #include <OpenGL/CGLIOSurface.h>
  15
  16 namespace content {
  17
  18 // Allocate IOSurface-backed storage for an FBO image transport surface.
  19 class IOSurfaceStorageProvider
  20     : public ImageTransportSurfaceFBO::StorageProvider {
  21  public:
  22   IOSurfaceStorageProvider(ImageTransportSurfaceFBO* transport_surface);
  23   virtual ~IOSurfaceStorageProvider();
  24
  25   // ImageTransportSurfaceFBO::StorageProvider implementation:
  26   virtual gfx::Size GetRoundedSize(gfx::Size size) OVERRIDE;
  27   virtual bool AllocateColorBufferStorage(
  28       CGLContextObj context, GLuint texture,
  29       gfx::Size pixel_size, float scale_factor) OVERRIDE;
  30   virtual void FreeColorBufferStorage() OVERRIDE;
  31   virtual void SwapBuffers(const gfx::Size& size, float scale_factor) OVERRIDE;
  32   virtual void WillWriteToBackbuffer() OVERRIDE;
  33   virtual void DiscardBackbuffer() OVERRIDE;
  34   virtual void SwapBuffersAckedByBrowser() OVERRIDE;
  35
  36  private:
  37   ImageTransportSurfaceFBO* transport_surface_;
  38
  39   base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
  40
  41   // The list of IOSurfaces that have been sent to the browser process but have
  42   // not been opened in the browser process yet. This list should never have
  43   // more than one entry.
  44   std::list<base::ScopedCFTypeRef<IOSurfaceRef>> pending_swapped_surfaces_;
  45
  46   // The id of |io_surface_| or 0 if that's NULL.
  47   IOSurfaceID io_surface_id_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(IOSurfaceStorageProvider);
  50 };
  51
  52 }  // namespace content
  53
  54 #endif  //  CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_MAC_H_