| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_GL_IO_SURFACE_SUPPORT_MAC_H_ |
| #define UI_GL_IO_SURFACE_SUPPORT_MAC_H_ |
| |
| #include <CoreFoundation/CoreFoundation.h> |
| #include <CoreVideo/CoreVideo.h> |
| #include <mach/mach.h> |
| #include <OpenGL/OpenGL.h> |
| |
| #include "base/basictypes.h" |
| #include "ui/gl/gl_export.h" |
| |
| // This Mac OS X-specific class provides dynamically-linked access to |
| // IOSurface.framework, which is only available on 10.6 and later. |
| // Since Chromium is built on 10.5 we must dynamically look up all of |
| // the entry points we need in this framework. |
| |
| // See IOSurface/IOSurfaceAPI.h and OpenGL/CGLIOSurface.h on 10.6 for |
| // documentation of the fields and methods of this class. |
| |
| class GL_EXPORT IOSurfaceSupport { |
| public: |
| // Returns an instance of the IOSurfaceSupport class if the |
| // operating system supports it, NULL otherwise. It is safe to call |
| // this multiple times. |
| static IOSurfaceSupport* Initialize(); |
| |
| virtual CFStringRef GetKIOSurfaceWidth() = 0; |
| virtual CFStringRef GetKIOSurfaceHeight() = 0; |
| virtual CFStringRef GetKIOSurfaceBytesPerElement() = 0; |
| virtual CFStringRef GetKIOSurfacePixelFormat() = 0; |
| virtual CFStringRef GetKIOSurfaceIsGlobal() = 0; |
| |
| virtual CFTypeRef IOSurfaceCreate(CFDictionaryRef properties) = 0; |
| |
| // The following two APIs assume the IOSurface was created with the |
| // kIOSurfaceIsGlobal key set to true |
| virtual uint32 IOSurfaceGetID(CFTypeRef io_surface) = 0; |
| virtual CFTypeRef IOSurfaceLookup(uint32 io_surface_id) = 0; |
| |
| // The following two APIs are more robust and secure, but |
| // unfortunately it looks like it will be a lot of work to correctly |
| // transmit a mach port from process to process (possibly requiring |
| // a side channel for or extension of the Chrome IPC mechanism) |
| virtual mach_port_t IOSurfaceCreateMachPort(CFTypeRef io_surface) = 0; |
| virtual CFTypeRef IOSurfaceLookupFromMachPort(mach_port_t port) = 0; |
| |
| virtual size_t IOSurfaceGetWidth(CFTypeRef io_surface) = 0; |
| virtual size_t IOSurfaceGetHeight(CFTypeRef io_surface) = 0; |
| virtual size_t IOSurfaceGetBytesPerRow(CFTypeRef io_surface) = 0; |
| virtual void* IOSurfaceGetBaseAddress(CFTypeRef io_surface) = 0; |
| |
| virtual IOReturn IOSurfaceLock(CFTypeRef io_surface, |
| uint32 options, |
| uint32* seed) = 0; |
| virtual IOReturn IOSurfaceUnlock(CFTypeRef io_surface, |
| uint32 options, |
| uint32* seed) = 0; |
| |
| virtual CGLError CGLTexImageIOSurface2D(CGLContextObj ctx, |
| GLenum target, |
| GLenum internal_format, |
| GLsizei width, |
| GLsizei height, |
| GLenum format, |
| GLenum type, |
| CFTypeRef io_surface, |
| GLuint plane) = 0; |
| |
| virtual CFTypeRef CVPixelBufferGetIOSurface( |
| CVPixelBufferRef pixel_buffer) = 0; |
| |
| protected: |
| IOSurfaceSupport(); |
| virtual ~IOSurfaceSupport(); |
| |
| DISALLOW_COPY_AND_ASSIGN(IOSurfaceSupport); |
| }; |
| |
| #endif // UI_GL_IO_SURFACE_SUPPORT_MAC_H_ |