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   ~IOSurfaceStorageProvider() override;
  24
  25   // ImageTransportSurfaceFBO::StorageProvider implementation:
  26   gfx::Size GetRoundedSize(gfx::Size size) override;
  27   bool AllocateColorBufferStorage(CGLContextObj context,
  28                                   GLuint texture,
  29                                   gfx::Size pixel_size,
  30                                   float scale_factor) override;
  31   void FreeColorBufferStorage() override;
  32   void SwapBuffers(const gfx::Size& size, float scale_factor) override;
  33   void WillWriteToBackbuffer() override;
  34   void DiscardBackbuffer() override;
  35   void SwapBuffersAckedByBrowser(bool disable_throttling) override;
  36
  37  private:
  38   ImageTransportSurfaceFBO* transport_surface_;
  39
  40   base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
  41
  42   // The list of IOSurfaces that have been sent to the browser process but have
  43   // not been opened in the browser process yet. This list should never have
  44   // more than one entry.
  45   std::list<base::ScopedCFTypeRef<IOSurfaceRef>> pending_swapped_surfaces_;
  46
  47   // The id of |io_surface_| or 0 if that's NULL.
  48   IOSurfaceID io_surface_id_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(IOSurfaceStorageProvider);
  51 };
  52
  53 }  // namespace content
  54
  55 #endif  // CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_IOSURFACE_MAC_H_