CGBitmapInfo

CGBitmapInfo is a data type in the Core Graphics framework of Apple's iOS and macOS operating systems. It is used to specify the pixel format and other attributes of an image or bitmap context. The type is defined as an option set, meaning it can represent a combination of multiple values.

The CGBitmapInfo type includes several constants that define the color model, alpha channel information, and byte order of the bitmap. The color model can be specified as grayscale, RGB, or CMYK. The alpha channel information can indicate whether the bitmap has an alpha channel and whether it is premultiplied. The byte order can be specified as big-endian or little-endian.

When creating a bitmap context, the CGBitmapInfo value is used to configure the pixel format of the context. This includes specifying the number of bits per component, the number of bits per pixel, and the number of bytes per row. The CGBitmapInfo value is also used when creating an image from a bitmap context or when drawing an image into a bitmap context.

CGBitmapInfo is an important part of the Core Graphics framework, as it allows developers to create and manipulate bitmap images with a high degree of control over their pixel format and other attributes. By using the appropriate CGBitmapInfo value, developers can ensure that their bitmap images are displayed correctly and efficiently on iOS and macOS devices.