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
16namespace content {
17
18// Allocate IOSurface-backed storage for an FBO image transport surface.
19class 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_
55