import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

gfx/2d/MacIOSurface.cpp

@@ -0,0 +1,615 @@
+/* -*- 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;
+  }
+}
+
+