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
  12 // Note that this must be included after gl_bindings.h to avoid conflicts.
  13 #include <OpenGL/CGLIOSurface.h>
  14
  15 namespace content {
  16
  17 // Allocate IOSurface-backed storage for an FBO image transport surface.
  18 class IOSurfaceStorageProvider
  19     : public ImageTransportSurfaceFBO::StorageProvider {
  20  public:
  21   IOSurfaceStorageProvider(ImageTransportSurfaceFBO* transport_surface);
  22   ~IOSurfaceStorageProvider() override;
  23
  24   // ImageTransportSurfaceFBO::StorageProvider implementation:
  25   gfx::Size GetRoundedSize(gfx::Size size) override;
  26   bool AllocateColorBufferStorage(
  27       CGLContextObj context, const base::Closure& context_dirtied_callback,
  28       GLuint texture, gfx::Size pixel_size, float scale_factor) override;
  29   void FreeColorBufferStorage() override;
  30   void SwapBuffers(const gfx::Size& size, float scale_factor) override;
  31   void WillWriteToBackbuffer() override;
  32   void DiscardBackbuffer() override;
  33   void SwapBuffersAckedByBrowser(bool disable_throttling) override;
  34
  35  private:
  36   ImageTransportSurfaceFBO* transport_surface_;
  37
  38   base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
  39
  40   // The list of IOSurfaces that have been sent to the browser process but have
  41   // not been opened in the browser process yet. This list should never have
  42   // more than one entry.
  43   std::list<base::ScopedCFTypeRef<IOSurfaceRef>> pending_swapped_surfaces_;
  44
  45   // The id of |io_surface_| or 0 if that's NULL.
  46   IOSurfaceID io_surface_id_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(IOSurfaceStorageProvider);
  49 };
  50
  51 }  // namespace content
  52
  53 #endif  // CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_IOSURFACE_MAC_H_