の意味は何意味がCGBitmapInfo定数のすべては何kCGBitmapByteOrder32Little
typedef CF_OPTIONS(uint32_t, CGBitmapInfo) {
kCGBitmapAlphaInfoMask = 0x1F,
kCGBitmapFloatInfoMask = 0xF00,
kCGBitmapFloatComponents = (1 << 8),
kCGBitmapByteOrderDefault = (0 << 12),
kCGBitmapByteOrder16Little = (1 << 12),
kCGBitmapByteOrder32Little = (2 << 12),
kCGBitmapByteOrder32Big = (4 << 12)
}
は、このリンクをたどりますhttps://developer.apple.com/reference/coregraphics/cgbitmapinfo –