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1 // Copyright (c) 2011 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 UI_GFX_SURFACE_IO_SURFACE_SUPPORT_MAC_H_ | |
6 #define UI_GFX_SURFACE_IO_SURFACE_SUPPORT_MAC_H_ | |
7 #pragma once | |
8 | |
9 #include <CoreFoundation/CoreFoundation.h> | |
10 #include <mach/mach.h> | |
11 #include <OpenGL/OpenGL.h> | |
12 | |
13 #include "base/basictypes.h" | |
14 #include "ui/gfx/surface/surface_export.h" | |
15 | |
16 // This Mac OS X-specific class provides dynamically-linked access to | |
17 // IOSurface.framework, which is only available on 10.6 and later. | |
18 // Since Chromium is built on 10.5 we must dynamically look up all of | |
19 // the entry points we need in this framework. | |
20 | |
21 // See IOSurface/IOSurfaceAPI.h and OpenGL/CGLIOSurface.h on 10.6 for | |
22 // documentation of the fields and methods of this class. | |
23 | |
24 class SURFACE_EXPORT IOSurfaceSupport { | |
25 public: | |
26 // Returns an instance of the IOSurfaceSupport class if the | |
27 // operating system supports it, NULL otherwise. It is safe to call | |
28 // this multiple times. | |
29 static IOSurfaceSupport* Initialize(); | |
30 | |
31 virtual CFStringRef GetKIOSurfaceWidth() = 0; | |
32 virtual CFStringRef GetKIOSurfaceHeight() = 0; | |
33 virtual CFStringRef GetKIOSurfaceBytesPerElement() = 0; | |
34 virtual CFStringRef GetKIOSurfaceIsGlobal() = 0; | |
35 | |
36 virtual CFTypeRef IOSurfaceCreate(CFDictionaryRef properties) = 0; | |
37 | |
38 // The following two APIs assume the IOSurface was created with the | |
39 // kIOSurfaceIsGlobal key set to true | |
40 virtual uint32 IOSurfaceGetID(CFTypeRef io_surface) = 0; | |
41 virtual CFTypeRef IOSurfaceLookup(uint32 io_surface_id) = 0; | |
42 | |
43 // The following two APIs are more robust and secure, but | |
44 // unfortunately it looks like it will be a lot of work to correctly | |
45 // transmit a mach port from process to process (possibly requiring | |
46 // a side channel for or extension of the Chrome IPC mechanism) | |
47 virtual mach_port_t IOSurfaceCreateMachPort(CFTypeRef io_surface) = 0; | |
48 virtual CFTypeRef IOSurfaceLookupFromMachPort(mach_port_t port) = 0; | |
49 | |
50 virtual size_t IOSurfaceGetWidth(CFTypeRef io_surface) = 0; | |
51 virtual size_t IOSurfaceGetHeight(CFTypeRef io_surface) = 0; | |
52 | |
53 virtual CGLError CGLTexImageIOSurface2D(CGLContextObj ctx, | |
54 GLenum target, | |
55 GLenum internal_format, | |
56 GLsizei width, | |
57 GLsizei height, | |
58 GLenum format, | |
59 GLenum type, | |
60 CFTypeRef io_surface, | |
61 GLuint plane) = 0; | |
62 | |
63 protected: | |
64 IOSurfaceSupport(); | |
65 virtual ~IOSurfaceSupport(); | |
66 | |
67 DISALLOW_COPY_AND_ASSIGN(IOSurfaceSupport); | |
68 }; | |
69 | |
70 #endif // UI_GFX_SURFACE_IO_SURFACE_SUPPORT_MAC_H_ | |
71 | |
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