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 #include <IOSurface/IOSurface.h>
  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(
  28       CGLContextObj context, const base::Closure& context_dirtied_callback,
  29       GLuint texture, gfx::Size pixel_size, float scale_factor) override;
  30   void FreeColorBufferStorage() override;
  31   void FrameSizeChanged(
  32       const gfx::Size& pixel_size, float scale_factor) override;
  33   void SwapBuffers(const gfx::Rect& dirty_rect) override;
  34   void WillWriteToBackbuffer() override;
  35   void DiscardBackbuffer() override;
  36   void SwapBuffersAckedByBrowser(bool disable_throttling) override;
  37
  38  private:
  39   ImageTransportSurfaceFBO* transport_surface_;
  40
  41   base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
  42   gfx::Size frame_pixel_size_;
  43   float frame_scale_factor_;
  44
  45   // The list of IOSurfaces that have been sent to the browser process but have
  46   // not been opened in the browser process yet. This list should never have
  47   // more than one entry.
  48   std::list<base::ScopedCFTypeRef<IOSurfaceRef>> pending_swapped_surfaces_;
  49
  50   // The id of |io_surface_| or 0 if that's NULL.
  51   IOSurfaceID io_surface_id_;
  52
  53   DISALLOW_COPY_AND_ASSIGN(IOSurfaceStorageProvider);
  54 };
  55
  56 }  // namespace content
  57
  58 #endif  // CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_IOSURFACE_MAC_H_