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Mypal/gfx/2d/MacIOSurface.cpp

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/* -*- 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/. */
#include "MacIOSurface.h"
#include <OpenGL/gl.h>
#include <QuartzCore/QuartzCore.h>
#include <dlfcn.h>
#include "mozilla/RefPtr.h"
#include "mozilla/Assertions.h"
#include "GLConsts.h"
using namespace mozilla;
// IOSurface signatures
#define IOSURFACE_FRAMEWORK_PATH \
"/System/Library/Frameworks/IOSurface.framework/IOSurface"
#define OPENGL_FRAMEWORK_PATH \
"/System/Library/Frameworks/OpenGL.framework/OpenGL"
#define COREGRAPHICS_FRAMEWORK_PATH \
"/System/Library/Frameworks/ApplicationServices.framework/Frameworks/" \
"CoreGraphics.framework/CoreGraphics"
#define COREVIDEO_FRAMEWORK_PATH \
"/System/Library/Frameworks/ApplicationServices.framework/Frameworks/" \
"CoreVideo.framework/CoreVideo"
#define GET_CONST(const_name) \
((CFStringRef*) dlsym(sIOSurfaceFramework, const_name))
#define GET_IOSYM(dest,sym_name) \
(typeof(dest)) dlsym(sIOSurfaceFramework, sym_name)
#define GET_CGLSYM(dest,sym_name) \
(typeof(dest)) dlsym(sOpenGLFramework, sym_name)
#define GET_CGSYM(dest,sym_name) \
(typeof(dest)) dlsym(sCoreGraphicsFramework, sym_name)
#define GET_CVSYM(dest, sym_name) \
(typeof(dest)) dlsym(sCoreVideoFramework, sym_name)
MacIOSurfaceLib::LibraryUnloader MacIOSurfaceLib::sLibraryUnloader;
bool MacIOSurfaceLib::isLoaded = false;
void* MacIOSurfaceLib::sIOSurfaceFramework;
void* MacIOSurfaceLib::sOpenGLFramework;
void* MacIOSurfaceLib::sCoreGraphicsFramework;
void* MacIOSurfaceLib::sCoreVideoFramework;
IOSurfaceCreateFunc MacIOSurfaceLib::sCreate;
IOSurfaceGetIDFunc MacIOSurfaceLib::sGetID;
IOSurfaceLookupFunc MacIOSurfaceLib::sLookup;
IOSurfaceGetBaseAddressFunc MacIOSurfaceLib::sGetBaseAddress;
IOSurfaceGetBaseAddressOfPlaneFunc MacIOSurfaceLib::sGetBaseAddressOfPlane;
IOSurfaceSizePlaneTFunc MacIOSurfaceLib::sWidth;
IOSurfaceSizePlaneTFunc MacIOSurfaceLib::sHeight;
IOSurfaceSizeTFunc MacIOSurfaceLib::sPlaneCount;
IOSurfaceSizePlaneTFunc MacIOSurfaceLib::sBytesPerRow;
IOSurfaceGetPropertyMaximumFunc MacIOSurfaceLib::sGetPropertyMaximum;
IOSurfaceVoidFunc MacIOSurfaceLib::sIncrementUseCount;
IOSurfaceVoidFunc MacIOSurfaceLib::sDecrementUseCount;
IOSurfaceLockFunc MacIOSurfaceLib::sLock;
IOSurfaceUnlockFunc MacIOSurfaceLib::sUnlock;
CGLTexImageIOSurface2DFunc MacIOSurfaceLib::sTexImage;
IOSurfaceContextCreateFunc MacIOSurfaceLib::sIOSurfaceContextCreate;
IOSurfaceContextCreateImageFunc MacIOSurfaceLib::sIOSurfaceContextCreateImage;
IOSurfaceContextGetSurfaceFunc MacIOSurfaceLib::sIOSurfaceContextGetSurface;
CVPixelBufferGetIOSurfaceFunc MacIOSurfaceLib::sCVPixelBufferGetIOSurface;
unsigned int (*MacIOSurfaceLib::sCGContextGetTypePtr) (CGContextRef) = nullptr;
IOSurfacePixelFormatFunc MacIOSurfaceLib::sPixelFormat;
CFStringRef MacIOSurfaceLib::kPropWidth;
CFStringRef MacIOSurfaceLib::kPropHeight;
CFStringRef MacIOSurfaceLib::kPropBytesPerElem;
CFStringRef MacIOSurfaceLib::kPropBytesPerRow;
CFStringRef MacIOSurfaceLib::kPropIsGlobal;
bool MacIOSurfaceLib::isInit() {
// Guard against trying to reload the library
// if it is not available.
if (!isLoaded)
LoadLibrary();
MOZ_ASSERT(sIOSurfaceFramework);
return sIOSurfaceFramework;
}
IOSurfacePtr MacIOSurfaceLib::IOSurfaceCreate(CFDictionaryRef properties) {
return sCreate(properties);
}
IOSurfacePtr MacIOSurfaceLib::IOSurfaceLookup(IOSurfaceID aIOSurfaceID) {
return sLookup(aIOSurfaceID);
}
IOSurfaceID MacIOSurfaceLib::IOSurfaceGetID(IOSurfacePtr aIOSurfacePtr) {
return sGetID(aIOSurfacePtr);
}
void* MacIOSurfaceLib::IOSurfaceGetBaseAddress(IOSurfacePtr aIOSurfacePtr) {
return sGetBaseAddress(aIOSurfacePtr);
}
void* MacIOSurfaceLib::IOSurfaceGetBaseAddressOfPlane(IOSurfacePtr aIOSurfacePtr,
size_t planeIndex) {
return sGetBaseAddressOfPlane(aIOSurfacePtr, planeIndex);
}
size_t MacIOSurfaceLib::IOSurfaceGetPlaneCount(IOSurfacePtr aIOSurfacePtr) {
return sPlaneCount(aIOSurfacePtr);
}
size_t MacIOSurfaceLib::IOSurfaceGetWidth(IOSurfacePtr aIOSurfacePtr, size_t plane) {
return sWidth(aIOSurfacePtr, plane);
}
size_t MacIOSurfaceLib::IOSurfaceGetHeight(IOSurfacePtr aIOSurfacePtr, size_t plane) {
return sHeight(aIOSurfacePtr, plane);
}
size_t MacIOSurfaceLib::IOSurfaceGetBytesPerRow(IOSurfacePtr aIOSurfacePtr, size_t plane) {
return sBytesPerRow(aIOSurfacePtr, plane);
}
size_t MacIOSurfaceLib::IOSurfaceGetPropertyMaximum(CFStringRef property) {
return sGetPropertyMaximum(property);
}
OSType MacIOSurfaceLib::IOSurfaceGetPixelFormat(IOSurfacePtr aIOSurfacePtr) {
return sPixelFormat(aIOSurfacePtr);
}
IOReturn MacIOSurfaceLib::IOSurfaceLock(IOSurfacePtr aIOSurfacePtr,
uint32_t options, uint32_t* seed) {
return sLock(aIOSurfacePtr, options, seed);
}
IOReturn MacIOSurfaceLib::IOSurfaceUnlock(IOSurfacePtr aIOSurfacePtr,
uint32_t options, uint32_t *seed) {
return sUnlock(aIOSurfacePtr, options, seed);
}
void MacIOSurfaceLib::IOSurfaceIncrementUseCount(IOSurfacePtr aIOSurfacePtr) {
sIncrementUseCount(aIOSurfacePtr);
}
void MacIOSurfaceLib::IOSurfaceDecrementUseCount(IOSurfacePtr aIOSurfacePtr) {
sDecrementUseCount(aIOSurfacePtr);
}
CGLError MacIOSurfaceLib::CGLTexImageIOSurface2D(CGLContextObj ctxt,
GLenum target, GLenum internalFormat,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
IOSurfacePtr ioSurface, GLuint plane) {
return sTexImage(ctxt, target, internalFormat, width, height,
format, type, ioSurface, plane);
}
IOSurfacePtr MacIOSurfaceLib::CVPixelBufferGetIOSurface(CVPixelBufferRef aPixelBuffer) {
return sCVPixelBufferGetIOSurface(aPixelBuffer);
}
CGContextRef MacIOSurfaceLib::IOSurfaceContextCreate(IOSurfacePtr aIOSurfacePtr,
unsigned aWidth, unsigned aHeight,
unsigned aBitsPerComponent, unsigned aBytes,
CGColorSpaceRef aColorSpace, CGBitmapInfo bitmapInfo) {
if (!sIOSurfaceContextCreate)
return nullptr;
return sIOSurfaceContextCreate(aIOSurfacePtr, aWidth, aHeight, aBitsPerComponent, aBytes, aColorSpace, bitmapInfo);
}
CGImageRef MacIOSurfaceLib::IOSurfaceContextCreateImage(CGContextRef aContext) {
if (!sIOSurfaceContextCreateImage)
return nullptr;
return sIOSurfaceContextCreateImage(aContext);
}
IOSurfacePtr MacIOSurfaceLib::IOSurfaceContextGetSurface(CGContextRef aContext) {
if (!sIOSurfaceContextGetSurface)
return nullptr;
return sIOSurfaceContextGetSurface(aContext);
}
CFStringRef MacIOSurfaceLib::GetIOConst(const char* symbole) {
CFStringRef *address = (CFStringRef*)dlsym(sIOSurfaceFramework, symbole);
if (!address)
return nullptr;
return *address;
}
void MacIOSurfaceLib::LoadLibrary() {
if (isLoaded) {
return;
}
isLoaded = true;
sIOSurfaceFramework = dlopen(IOSURFACE_FRAMEWORK_PATH,
RTLD_LAZY | RTLD_LOCAL);
sOpenGLFramework = dlopen(OPENGL_FRAMEWORK_PATH,
RTLD_LAZY | RTLD_LOCAL);
sCoreGraphicsFramework = dlopen(COREGRAPHICS_FRAMEWORK_PATH,
RTLD_LAZY | RTLD_LOCAL);
sCoreVideoFramework = dlopen(COREVIDEO_FRAMEWORK_PATH,
RTLD_LAZY | RTLD_LOCAL);
if (!sIOSurfaceFramework || !sOpenGLFramework || !sCoreGraphicsFramework ||
!sCoreVideoFramework) {
if (sIOSurfaceFramework)
dlclose(sIOSurfaceFramework);
if (sOpenGLFramework)
dlclose(sOpenGLFramework);
if (sCoreGraphicsFramework)
dlclose(sCoreGraphicsFramework);
if (sCoreVideoFramework)
dlclose(sCoreVideoFramework);
sIOSurfaceFramework = nullptr;
sOpenGLFramework = nullptr;
sCoreGraphicsFramework = nullptr;
sCoreVideoFramework = nullptr;
return;
}
kPropWidth = GetIOConst("kIOSurfaceWidth");
kPropHeight = GetIOConst("kIOSurfaceHeight");
kPropBytesPerElem = GetIOConst("kIOSurfaceBytesPerElement");
kPropBytesPerRow = GetIOConst("kIOSurfaceBytesPerRow");
kPropIsGlobal = GetIOConst("kIOSurfaceIsGlobal");
sCreate = GET_IOSYM(sCreate, "IOSurfaceCreate");
sGetID = GET_IOSYM(sGetID, "IOSurfaceGetID");
sWidth = GET_IOSYM(sWidth, "IOSurfaceGetWidthOfPlane");
sHeight = GET_IOSYM(sHeight, "IOSurfaceGetHeightOfPlane");
sBytesPerRow = GET_IOSYM(sBytesPerRow, "IOSurfaceGetBytesPerRowOfPlane");
sGetPropertyMaximum = GET_IOSYM(sGetPropertyMaximum, "IOSurfaceGetPropertyMaximum");
sLookup = GET_IOSYM(sLookup, "IOSurfaceLookup");
sLock = GET_IOSYM(sLock, "IOSurfaceLock");
sUnlock = GET_IOSYM(sUnlock, "IOSurfaceUnlock");
sIncrementUseCount =
GET_IOSYM(sIncrementUseCount, "IOSurfaceIncrementUseCount");
sDecrementUseCount =
GET_IOSYM(sDecrementUseCount, "IOSurfaceDecrementUseCount");
sGetBaseAddress = GET_IOSYM(sGetBaseAddress, "IOSurfaceGetBaseAddress");
sGetBaseAddressOfPlane =
GET_IOSYM(sGetBaseAddressOfPlane, "IOSurfaceGetBaseAddressOfPlane");
sPlaneCount = GET_IOSYM(sPlaneCount, "IOSurfaceGetPlaneCount");
sPixelFormat = GET_IOSYM(sPixelFormat, "IOSurfaceGetPixelFormat");
sTexImage = GET_CGLSYM(sTexImage, "CGLTexImageIOSurface2D");
sCGContextGetTypePtr = (unsigned int (*)(CGContext*))dlsym(RTLD_DEFAULT, "CGContextGetType");
sCVPixelBufferGetIOSurface =
GET_CVSYM(sCVPixelBufferGetIOSurface, "CVPixelBufferGetIOSurface");
// Optional symbols
sIOSurfaceContextCreate = GET_CGSYM(sIOSurfaceContextCreate, "CGIOSurfaceContextCreate");
sIOSurfaceContextCreateImage = GET_CGSYM(sIOSurfaceContextCreateImage, "CGIOSurfaceContextCreateImage");
sIOSurfaceContextGetSurface = GET_CGSYM(sIOSurfaceContextGetSurface, "CGIOSurfaceContextGetSurface");
if (!sCreate || !sGetID || !sLookup || !sTexImage || !sGetBaseAddress ||
!sGetBaseAddressOfPlane || !sPlaneCount ||
!kPropWidth || !kPropHeight || !kPropBytesPerElem || !kPropIsGlobal ||
!sLock || !sUnlock || !sIncrementUseCount || !sDecrementUseCount ||
!sWidth || !sHeight || !kPropBytesPerRow ||
!sBytesPerRow || !sGetPropertyMaximum || !sCVPixelBufferGetIOSurface) {
CloseLibrary();
}
}
void MacIOSurfaceLib::CloseLibrary() {
if (sIOSurfaceFramework) {
dlclose(sIOSurfaceFramework);
}
if (sOpenGLFramework) {
dlclose(sOpenGLFramework);
}
if (sCoreVideoFramework) {
dlclose(sCoreVideoFramework);
}
sIOSurfaceFramework = nullptr;
sOpenGLFramework = nullptr;
sCoreVideoFramework = nullptr;
}
MacIOSurface::MacIOSurface(const void* aIOSurfacePtr,
double aContentsScaleFactor, bool aHasAlpha)
: mIOSurfacePtr(aIOSurfacePtr)
, mContentsScaleFactor(aContentsScaleFactor)
, mHasAlpha(aHasAlpha)
{
CFRetain(mIOSurfacePtr);
IncrementUseCount();
}
MacIOSurface::~MacIOSurface() {
DecrementUseCount();
CFRelease(mIOSurfacePtr);
}
already_AddRefed<MacIOSurface> MacIOSurface::CreateIOSurface(int aWidth, int aHeight,
double aContentsScaleFactor,
bool aHasAlpha) {
if (!MacIOSurfaceLib::isInit() || aContentsScaleFactor <= 0)
return nullptr;
CFMutableDictionaryRef props = ::CFDictionaryCreateMutable(
kCFAllocatorDefault, 4,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
if (!props)
return nullptr;
MOZ_ASSERT((size_t)aWidth <= GetMaxWidth());
MOZ_ASSERT((size_t)aHeight <= GetMaxHeight());
int32_t bytesPerElem = 4;
size_t intScaleFactor = ceil(aContentsScaleFactor);
aWidth *= intScaleFactor;
aHeight *= intScaleFactor;
CFNumberRef cfWidth = ::CFNumberCreate(nullptr, kCFNumberSInt32Type, &aWidth);
CFNumberRef cfHeight = ::CFNumberCreate(nullptr, kCFNumberSInt32Type, &aHeight);
CFNumberRef cfBytesPerElem = ::CFNumberCreate(nullptr, kCFNumberSInt32Type, &bytesPerElem);
::CFDictionaryAddValue(props, MacIOSurfaceLib::kPropWidth,
cfWidth);
::CFRelease(cfWidth);
::CFDictionaryAddValue(props, MacIOSurfaceLib::kPropHeight,
cfHeight);
::CFRelease(cfHeight);
::CFDictionaryAddValue(props, MacIOSurfaceLib::kPropBytesPerElem,
cfBytesPerElem);
::CFRelease(cfBytesPerElem);
::CFDictionaryAddValue(props, MacIOSurfaceLib::kPropIsGlobal,
kCFBooleanTrue);
IOSurfacePtr surfaceRef = MacIOSurfaceLib::IOSurfaceCreate(props);
::CFRelease(props);
if (!surfaceRef)
return nullptr;
RefPtr<MacIOSurface> ioSurface = new MacIOSurface(surfaceRef, aContentsScaleFactor, aHasAlpha);
if (!ioSurface) {
::CFRelease(surfaceRef);
return nullptr;
}
// Release the IOSurface because MacIOSurface retained it
CFRelease(surfaceRef);
return ioSurface.forget();
}
already_AddRefed<MacIOSurface> MacIOSurface::LookupSurface(IOSurfaceID aIOSurfaceID,
double aContentsScaleFactor,
bool aHasAlpha) {
if (!MacIOSurfaceLib::isInit() || aContentsScaleFactor <= 0)
return nullptr;
IOSurfacePtr surfaceRef = MacIOSurfaceLib::IOSurfaceLookup(aIOSurfaceID);
if (!surfaceRef)
return nullptr;
RefPtr<MacIOSurface> ioSurface = new MacIOSurface(surfaceRef, aContentsScaleFactor, aHasAlpha);
if (!ioSurface) {
::CFRelease(surfaceRef);
return nullptr;
}
// Release the IOSurface because MacIOSurface retained it
CFRelease(surfaceRef);
return ioSurface.forget();
}
IOSurfaceID MacIOSurface::GetIOSurfaceID() {
return MacIOSurfaceLib::IOSurfaceGetID(mIOSurfacePtr);
}
void* MacIOSurface::GetBaseAddress() {
return MacIOSurfaceLib::IOSurfaceGetBaseAddress(mIOSurfacePtr);
}
void* MacIOSurface::GetBaseAddressOfPlane(size_t aPlaneIndex)
{
return MacIOSurfaceLib::IOSurfaceGetBaseAddressOfPlane(mIOSurfacePtr,
aPlaneIndex);
}
size_t MacIOSurface::GetWidth(size_t plane) {
size_t intScaleFactor = ceil(mContentsScaleFactor);
return GetDevicePixelWidth(plane) / intScaleFactor;
}
size_t MacIOSurface::GetHeight(size_t plane) {
size_t intScaleFactor = ceil(mContentsScaleFactor);
return GetDevicePixelHeight(plane) / intScaleFactor;
}
size_t MacIOSurface::GetPlaneCount() {
return MacIOSurfaceLib::IOSurfaceGetPlaneCount(mIOSurfacePtr);
}
/*static*/ size_t MacIOSurface::GetMaxWidth() {
if (!MacIOSurfaceLib::isInit())
return -1;
return MacIOSurfaceLib::IOSurfaceGetPropertyMaximum(MacIOSurfaceLib::kPropWidth);
}
/*static*/ size_t MacIOSurface::GetMaxHeight() {
if (!MacIOSurfaceLib::isInit())
return -1;
return MacIOSurfaceLib::IOSurfaceGetPropertyMaximum(MacIOSurfaceLib::kPropHeight);
}
size_t MacIOSurface::GetDevicePixelWidth(size_t plane) {
return MacIOSurfaceLib::IOSurfaceGetWidth(mIOSurfacePtr, plane);
}
size_t MacIOSurface::GetDevicePixelHeight(size_t plane) {
return MacIOSurfaceLib::IOSurfaceGetHeight(mIOSurfacePtr, plane);
}
size_t MacIOSurface::GetBytesPerRow(size_t plane) {
return MacIOSurfaceLib::IOSurfaceGetBytesPerRow(mIOSurfacePtr, plane);
}
OSType MacIOSurface::GetPixelFormat() {
return MacIOSurfaceLib::IOSurfaceGetPixelFormat(mIOSurfacePtr);
}
void MacIOSurface::IncrementUseCount() {
MacIOSurfaceLib::IOSurfaceIncrementUseCount(mIOSurfacePtr);
}
void MacIOSurface::DecrementUseCount() {
MacIOSurfaceLib::IOSurfaceDecrementUseCount(mIOSurfacePtr);
}
#define READ_ONLY 0x1
void MacIOSurface::Lock(bool aReadOnly) {
MacIOSurfaceLib::IOSurfaceLock(mIOSurfacePtr, aReadOnly ? READ_ONLY : 0, nullptr);
}
void MacIOSurface::Unlock(bool aReadOnly) {
MacIOSurfaceLib::IOSurfaceUnlock(mIOSurfacePtr, aReadOnly ? READ_ONLY : 0, nullptr);
}
using mozilla::gfx::SourceSurface;
using mozilla::gfx::IntSize;
using mozilla::gfx::SurfaceFormat;
void
MacIOSurfaceBufferDeallocator(void* aClosure)
{
MOZ_ASSERT(aClosure);
delete [] static_cast<unsigned char*>(aClosure);
}
already_AddRefed<SourceSurface>
MacIOSurface::GetAsSurface() {
Lock();
size_t bytesPerRow = GetBytesPerRow();
size_t ioWidth = GetDevicePixelWidth();
size_t ioHeight = GetDevicePixelHeight();
unsigned char* ioData = (unsigned char*)GetBaseAddress();
unsigned char* dataCpy =
new unsigned char[bytesPerRow * ioHeight / sizeof(unsigned char)];
for (size_t i = 0; i < ioHeight; i++) {
memcpy(dataCpy + i * bytesPerRow,
ioData + i * bytesPerRow, ioWidth * 4);
}
Unlock();
SurfaceFormat format = HasAlpha() ? mozilla::gfx::SurfaceFormat::B8G8R8A8 :
mozilla::gfx::SurfaceFormat::B8G8R8X8;
RefPtr<mozilla::gfx::DataSourceSurface> surf =
mozilla::gfx::Factory::CreateWrappingDataSourceSurface(dataCpy,
bytesPerRow,
IntSize(ioWidth, ioHeight),
format,
&MacIOSurfaceBufferDeallocator,
static_cast<void*>(dataCpy));
return surf.forget();
}
SurfaceFormat
MacIOSurface::GetFormat()
{
OSType pixelFormat = GetPixelFormat();
if (pixelFormat == '420v') {
return SurfaceFormat::NV12;
} else if (pixelFormat == '2vuy') {
return SurfaceFormat::YUV422;
} else {
return HasAlpha() ? SurfaceFormat::R8G8B8A8 : SurfaceFormat::R8G8B8X8;
}
}
SurfaceFormat
MacIOSurface::GetReadFormat()
{
OSType pixelFormat = GetPixelFormat();
if (pixelFormat == '420v') {
return SurfaceFormat::NV12;
} else if (pixelFormat == '2vuy') {
return SurfaceFormat::R8G8B8X8;
} else {
return HasAlpha() ? SurfaceFormat::R8G8B8A8 : SurfaceFormat::R8G8B8X8;
}
}
CGLError
MacIOSurface::CGLTexImageIOSurface2D(CGLContextObj ctx, size_t plane)
{
MOZ_ASSERT(plane >= 0);
OSType pixelFormat = GetPixelFormat();
GLenum internalFormat;
GLenum format;
GLenum type;
if (pixelFormat == '420v') {
MOZ_ASSERT(GetPlaneCount() == 2);
MOZ_ASSERT(plane < 2);
if (plane == 0) {
internalFormat = format = GL_LUMINANCE;
} else {
internalFormat = format = GL_LUMINANCE_ALPHA;
}
type = GL_UNSIGNED_BYTE;
} else if (pixelFormat == '2vuy') {
MOZ_ASSERT(plane == 0);
internalFormat = GL_RGB;
format = LOCAL_GL_YCBCR_422_APPLE;
type = GL_UNSIGNED_SHORT_8_8_APPLE;
} else {
MOZ_ASSERT(plane == 0);
internalFormat = HasAlpha() ? GL_RGBA : GL_RGB;
format = GL_BGRA;
type = GL_UNSIGNED_INT_8_8_8_8_REV;
}
CGLError temp = MacIOSurfaceLib::CGLTexImageIOSurface2D(ctx,
GL_TEXTURE_RECTANGLE_ARB,
internalFormat,
GetDevicePixelWidth(plane),
GetDevicePixelHeight(plane),
format,
type,
mIOSurfacePtr, plane);
return temp;
}
static
CGColorSpaceRef CreateSystemColorSpace() {
CGColorSpaceRef cspace = ::CGDisplayCopyColorSpace(::CGMainDisplayID());
if (!cspace) {
cspace = ::CGColorSpaceCreateDeviceRGB();
}
return cspace;
}
CGContextRef MacIOSurface::CreateIOSurfaceContext() {
CGColorSpaceRef cspace = CreateSystemColorSpace();
CGContextRef ref = MacIOSurfaceLib::IOSurfaceContextCreate(mIOSurfacePtr,
GetDevicePixelWidth(),
GetDevicePixelHeight(),
8, 32, cspace, 0x2002);
::CGColorSpaceRelease(cspace);
return ref;
}
CGImageRef MacIOSurface::CreateImageFromIOSurfaceContext(CGContextRef aContext) {
if (!MacIOSurfaceLib::isInit())
return nullptr;
return MacIOSurfaceLib::IOSurfaceContextCreateImage(aContext);
}
already_AddRefed<MacIOSurface> MacIOSurface::IOSurfaceContextGetSurface(CGContextRef aContext,
double aContentsScaleFactor,
bool aHasAlpha) {
if (!MacIOSurfaceLib::isInit() || aContentsScaleFactor <= 0)
return nullptr;
IOSurfacePtr surfaceRef = MacIOSurfaceLib::IOSurfaceContextGetSurface(aContext);
if (!surfaceRef)
return nullptr;
RefPtr<MacIOSurface> ioSurface = new MacIOSurface(surfaceRef, aContentsScaleFactor, aHasAlpha);
if (!ioSurface) {
::CFRelease(surfaceRef);
return nullptr;
}
return ioSurface.forget();
}
CGContextType GetContextType(CGContextRef ref)
{
if (!MacIOSurfaceLib::isInit() || !MacIOSurfaceLib::sCGContextGetTypePtr)
return CG_CONTEXT_TYPE_UNKNOWN;
unsigned int type = MacIOSurfaceLib::sCGContextGetTypePtr(ref);
if (type == CG_CONTEXT_TYPE_BITMAP) {
return CG_CONTEXT_TYPE_BITMAP;
} else if (type == CG_CONTEXT_TYPE_IOSURFACE) {
return CG_CONTEXT_TYPE_IOSURFACE;
} else {
return CG_CONTEXT_TYPE_UNKNOWN;
}
}
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