typedef struct CGColorSpace *CGColorSpaceRef;

typedef CF_ENUM (int32_t, CGColorRenderingIntent) {
    kCGRenderingIntentDefault,
    kCGRenderingIntentAbsoluteColorimetric,
    kCGRenderingIntentRelativeColorimetric,
    kCGRenderingIntentPerceptual,
    kCGRenderingIntentSaturation
};

/* The model of a color space. */

typedef CF_ENUM (int32_t,  CGColorSpaceModel) {
    kCGColorSpaceModelUnknown = -1,
    kCGColorSpaceModelMonochrome,
    kCGColorSpaceModelRGB,
    kCGColorSpaceModelCMYK,
    kCGColorSpaceModelLab,
    kCGColorSpaceModelDeviceN,
    kCGColorSpaceModelIndexed,
    kCGColorSpaceModelPattern
};

CG_EXTERN const CFStringRef kCGColorSpaceGenericGray
  CG_AVAILABLE_STARTING(__MAC_10_4, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceGenericRGB
  CG_AVAILABLE_STARTING(__MAC_10_4, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceGenericCMYK
  CG_AVAILABLE_STARTING(__MAC_10_4, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceDisplayP3
  CG_AVAILABLE_STARTING(__MAC_10_11_2, __IPHONE_9_3);

CG_EXTERN const CFStringRef kCGColorSpaceGenericRGBLinear
  CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceAdobeRGB1998
  CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceSRGB
  CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceGenericGrayGamma2_2
  CG_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceGenericXYZ
  CG_AVAILABLE_STARTING(__MAC_10_11, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceACESCGLinear
CG_AVAILABLE_STARTING(__MAC_10_11, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceITUR_709
CG_AVAILABLE_STARTING(__MAC_10_11, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceITUR_2020
CG_AVAILABLE_STARTING(__MAC_10_11, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceROMMRGB
CG_AVAILABLE_STARTING(__MAC_10_11, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceDCIP3
CG_AVAILABLE_STARTING(__MAC_10_11, __IPHONE_9_0);

CG_EXTERN const CFStringRef kCGColorSpaceExtendedSRGB
CG_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_10_0);

CG_EXTERN const CFStringRef kCGColorSpaceLinearSRGB
CG_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_10_0);

CG_EXTERN const CFStringRef kCGColorSpaceExtendedLinearSRGB
CG_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_10_0);

CG_EXTERN const CFStringRef kCGColorSpaceExtendedGray
CG_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_10_0);

CG_EXTERN const CFStringRef kCGColorSpaceLinearGray
CG_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_10_0);

CG_EXTERN const CFStringRef kCGColorSpaceExtendedLinearGray
CG_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_10_0);

CG_EXTERN CGColorSpaceRef cg_nullable CGColorSpaceCreateDeviceGray(void)
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef cg_nullable CGColorSpaceCreateDeviceRGB(void)
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef cg_nullable CGColorSpaceCreateDeviceCMYK(void)
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef __nullable CGColorSpaceCreateCalibratedGray(const CGFloat
  whitePoint[3], const CGFloat blackPoint[3], CGFloat gamma)
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef __nullable CGColorSpaceCreateCalibratedRGB(const CGFloat
  whitePoint[3], const CGFloat blackPoint[3], const CGFloat gamma[3],
  const CGFloat matrix[9]) CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef __nullable CGColorSpaceCreateLab(const CGFloat whitePoint[3],
  const CGFloat blackPoint[3], const CGFloat range[4])
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef __nullable CGColorSpaceCreateWithICCProfile(CFDataRef cg_nullable data)
  CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef __nullable CGColorSpaceCreateICCBased(size_t nComponents,
  const CGFloat * __nullable range, CGDataProviderRef cg_nullable profile,
  CGColorSpaceRef __nullable alternate)
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef __nullable CGColorSpaceCreateIndexed(CGColorSpaceRef cg_nullable baseSpace,
  size_t lastIndex, const unsigned char * cg_nullable colorTable)
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef __nullable CGColorSpaceCreatePattern(CGColorSpaceRef __nullable baseSpace)
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef __nullable
  CGColorSpaceCreateWithPlatformColorSpace(const void * cg_nullable ref)
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_9_0);

CG_EXTERN CGColorSpaceRef __nullable CGColorSpaceCreateWithName(CFStringRef cg_nullable name)
  CG_AVAILABLE_STARTING(__MAC_10_2, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef cg_nullable CGColorSpaceRetain(CGColorSpaceRef cg_nullable space)
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN void CGColorSpaceRelease(CGColorSpaceRef cg_nullable space)
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN CFStringRef __nullable CGColorSpaceCopyName(CGColorSpaceRef cg_nullable space)
  CG_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_10_0);

CG_EXTERN CFTypeID CGColorSpaceGetTypeID(void)
  CG_AVAILABLE_STARTING(__MAC_10_2, __IPHONE_2_0);


CG_EXTERN size_t CGColorSpaceGetNumberOfComponents(CGColorSpaceRef cg_nullable space)
  CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN CGColorSpaceModel CGColorSpaceGetModel(CGColorSpaceRef cg_nullable space)
  CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef __nullable CGColorSpaceGetBaseColorSpace(CGColorSpaceRef cg_nullable space)
  CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);

CG_EXTERN size_t CGColorSpaceGetColorTableCount(CGColorSpaceRef cg_nullable space)
  CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);


CG_EXTERN void CGColorSpaceGetColorTable(CGColorSpaceRef cg_nullable space,
  uint8_t * cg_nullable table) CG_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);


CG_EXTERN CFDataRef __nullable CGColorSpaceCopyICCProfile(CGColorSpaceRef cg_nullable space);


CG_EXTERN CFDataRef __nullable CGColorSpaceCopyICCData(CGColorSpaceRef cg_nullable space)
CG_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_10_0);
CG_EXTERN bool CGColorSpaceIsWideGamutRGB(CGColorSpaceRef)
CG_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_10_0);
CG_EXTERN bool CGColorSpaceSupportsOutput(CGColorSpaceRef space)
CG_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_10_0);