Function

CGColorSpaceCreateDeviceRGB()

Creates a device-dependent RGB color space.

Declaration

func CGColorSpaceCreateDeviceRGB() -> CGColorSpace

Return Value

A device-dependent RGB color space. You are responsible for releasing this object by calling CGColorSpaceRelease. If unsuccessful, returns NULL.

Discussion

Colors in a device-dependent color space are not transformed or otherwise modified when displayed on an output device—that is, there is no attempt to maintain the visual appearance of a color. As a consequence, colors in a device color space often appear different when displayed on different output devices. For this reason, device color spaces are not recommended when color preservation is important.

See Also

Accessing System-Defined Color Spaces

class let acescgLinear: CFString

The name of the ACEScg color space. For more information, see “ACEScg—A Working Space for CGI Render and Compositing”, Version 1.0.1, Academy of Motion Picture Arts and Sciences (http://www.oscars.org/science-technology/sci-tech-projects/aces).

class let adobeRGB1998: CFString

The name of the Adobe RGB (1998) color space. For more information, see “Adobe RGB (1998) Color Image Encoding”, Version 2005-05, Adobe Systems Inc. (http://www.adobe.com).

class let dcip3: CFString

The name of the DCI P3 color space, created by Digital Cinema Initiatives, LLC. This color space is the digital cinema standard.

class let displayP3: CFString

The name of the Display P3 color space, created by Apple Inc. This color space uses the DCI P3 primaries, a D65 white point, and the same gamma curve as the sRGB color space.

class let extendedGray: CFString

The name of the extended Gray color space.

class let extendedLinearGray: CFString

The name of an extended Gray color space with a linear gamma ramp.

class let extendedLinearSRGB: CFString

The name of the extended linear sRGB color space.

class let extendedSRGB: CFString

The name of the extended sRGB color space.

class let genericCMYK: CFString

The name of the generic CMYK color space.

class let genericGrayGamma2_2: CFString

The name of the generic gray color space with a gamma value of 2.2.

class let genericRGBLinear: CFString

The name of the generic linear RGB color space. This is the same as kCGColorSpaceGenericRGB, but with a gamma equal to 1.0.

class let genericXYZ: CFString

The name of the generic XYZ color space.

class let itur_2020: CFString

The name of the ITU-R Recommendation BT.2020 color space. For more information, see “BT.2020 : Parameter values for ultra-high definition television systems for production and international programme exchange”, Version 2014-06, International Telecommunication Union (https://www.itu.int/rec/R-REC-BT.2020).

class let itur_709: CFString

The name of the ITU-R Recommendation BT.709 color space. For more information, see “BT.709 : Parameter values for the HDTV standards for production and international programme exchange”, Version 2015-06, International Telecommunication Union (https://www.itu.int/rec/R-REC-BT.709).

class let linearGray: CFString

The name of the Gray color space using a linear gamma ramp.

class let linearSRGB: CFString

The name of the color space thats the sRGB color primaries with a linear gamma ramp.

class let rommrgb: CFString

The name of the ROMM RGB color space. For more information, see “Reference Output Medium Metric RGB Color Space (ROMM RGB) White Paper”, Version 2.1, Eastman Kodak Company (http://www.kodak.com/global/plugins/acrobat/en/professional/products/software/colorFlow/romm_rgb.pdf).

class let sRGB: CFString

The name of the sRGB color space as specified in IEC 61966-2-1.

func CGColorSpaceCreateDeviceCMYK() -> CGColorSpace

Creates a device-dependent CMYK color space.

func CGColorSpaceCreateDeviceGray() -> CGColorSpace

Creates a device-dependent grayscale color space.

Beta Software

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