gecko-dev/gfx/2d/MacIOSurface.h

70 lines
2.7 KiB
Objective-C

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
// vim:set ts=2 sts=2 sw=2 et cin:
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MacIOSurface_h__
#define MacIOSurface_h__
#ifdef XP_MACOSX
#import <OpenGL/OpenGL.h>
#include "2D.h"
#include "mozilla/RefPtr.h"
class gfxASurface;
struct _CGLContextObject;
typedef _CGLContextObject* CGLContextObj;
typedef struct CGContext* CGContextRef;
typedef struct CGImage* CGImageRef;
typedef uint32_t IOSurfaceID;
class MacIOSurface : public mozilla::RefCounted<MacIOSurface> {
public:
typedef mozilla::gfx::SourceSurface SourceSurface;
static mozilla::TemporaryRef<MacIOSurface> CreateIOSurface(int aWidth, int aHeight,
double aContentsScaleFactor = 1.0);
static void ReleaseIOSurface(MacIOSurface *aIOSurface);
static mozilla::TemporaryRef<MacIOSurface> LookupSurface(IOSurfaceID aSurfaceID,
double aContentsScaleFactor = 1.0);
MacIOSurface(const void *aIOSurfacePtr, double aContentsScaleFactor = 1.0)
: mIOSurfacePtr(aIOSurfacePtr), mContentsScaleFactor(aContentsScaleFactor) {}
~MacIOSurface();
IOSurfaceID GetIOSurfaceID();
void *GetBaseAddress();
// GetWidth() and GetHeight() return values in "display pixels". A
// "display pixel" is the smallest fully addressable part of a display.
// But in HiDPI modes each "display pixel" corresponds to more than one
// device pixel. Multiply display pixels by mContentsScaleFactor to
// get device pixels.
size_t GetWidth();
size_t GetHeight();
double GetContentsScaleFactor() { return mContentsScaleFactor; }
size_t GetBytesPerRow();
void Lock();
void Unlock();
// We would like to forward declare NSOpenGLContext, but it is an @interface
// and this file is also used from c++, so we use a void *.
CGLError CGLTexImageIOSurface2D(void *ctxt,
GLenum internalFormat, GLenum format,
GLenum type, GLuint plane);
mozilla::TemporaryRef<SourceSurface> GetAsSurface();
CGContextRef CreateIOSurfaceContext();
// FIXME This doesn't really belong here
static CGImageRef CreateImageFromIOSurfaceContext(CGContextRef aContext);
static mozilla::TemporaryRef<MacIOSurface> IOSurfaceContextGetSurface(CGContextRef aContext,
double aContentsScaleFactor = 1.0);
private:
friend class nsCARenderer;
const void* mIOSurfacePtr;
double mContentsScaleFactor;
};
#endif
#endif