Identifies a color space ID. This ID is a bit field which can combine multiple values from enumIGColorSpaceIDs. It can be made up of one, two, or three components. It must describe the color space (RGB, CMYK, grayscale, etc). It may also indicate that a type of alpha channel is present (alpha, pre-multiplied alpha) and/or the presence of one or more extra channels. For example:
IG_COLOR_SPACE_ID_RGB - RGB with no alpha or extra channels.
IG_COLOR_SPACE_ID_Gy Or IG_COLOR_SPACE_ID_A - grayscale with an alpha channel.
IG_COLOR_SPACE_ID_RGB Or IG_COLOR_SPACE_ID_P Or IG_COLOR_SPACE_ID_Ex - RGB with a pre-multiplied alpha channel and one or more extra channels.
Values:
| IG_COLOR_SPACE_ID_None | No regular (color) channels, can be combined with alpha and extra values. |
| IG_COLOR_SPACE_ID_RGB | RGB. |
| IG_COLOR_SPACE_ID_Gy | Grayscale (intensity). |
| IG_COLOR_SPACE_ID_I | Indexed RGB. |
| IG_COLOR_SPACE_ID_IHS | IHS. |
| IG_COLOR_SPACE_ID_HLS | HLS. |
| IG_COLOR_SPACE_ID_LAB | LAB. |
| IG_COLOR_SPACE_ID_YIQ | YIQ. |
| IG_COLOR_SPACE_ID_CMY | CMY. |
| IG_COLOR_SPACE_ID_CMYK | CMYK. |
| IG_COLOR_SPACE_ID_YCbCr | YCbCr. |
| IG_COLOR_SPACE_ID_YUV | YUV. |
| IG_COLOR_SPACE_ID_XYZ | For internal use only. CIE XYZ. |
| IG_COLOR_SPACE_ID_LAST | Equal to last color space (for color channels) enum value. |
| IG_COLOR_SPACE_ID_ColorMask | Bit mask used to access color space (for color channels) only. |
| IG_COLOR_SPACE_ID_A | Indicates presence of an alpha channel. |
| IG_COLOR_SPACE_ID_P | Indicates presence of a pre-multiplied alpha channel. |
| IG_COLOR_SPACE_ID_Ex | Indicates presence of one or more extra channels. |
| IG_COLOR_SPACE_ID_RGBA | RGB with alpha channel. |
| IG_COLOR_SPACE_ID_RGBPA | RGB with pre-multiplied alpha channel. |
| IG_COLOR_SPACE_ID_GyA | Intensity with alpha channel. |
| IG_COLOR_SPACE_ID_GyPA | Intensity with pre-multiplied alpha channel. |
| IG_COLOR_SPACE_ID_RGBAEx | RGB with alpha and extra channels. |
| IG_COLOR_SPACE_ID_RGBPAEx | RGB with pre-multiplied alpha and extra channels. |
| IG_COLOR_SPACE_ID_Unknown | Unknown - no color or alpha channels, only extra channels are present. |
| IG_COLOR_SPACE_ID_HSL | HSL. |