![]() ![]() One exception is JFIF files, which are YCbCr-encoded and for which the default sRGB space is a good approximation. ![]() ![]() Supporting the image must include performing color transformations if either the XLATEOBJ structure's XO_DEVICE_ICM flag or XO_HOST_ICM flag is set, because GDI cannot perform color transformations on such images.įor these compressed images, color space information is typically contained within the image data. The driver can examine the image data and determine if it can support the image. This results in a call to the driver's DrvQueryDeviceSupport function, with a query type of either QDS_CHECKJPEGFORMAT or QDS_CHECKPNGFORMAT and a buffer containing the compressed image. We recommend that you use Microsoft's IPP inbox class driver, along with Print Support Apps (PSA), to customize the print experience in Windows 10 and 11 for printer device development.įor more information, see the Print support app design guide.įor printers that provide hardware support of JPEG and PNG compressed images, color management must be handled by the driver or device and cannot be handled by GDI.īefore an application sends a JPEG or PNG compressed image to a printer, it will call ExtEscape with either the CHECKJPEGFORMAT or CHECKPNGFORMAT escape code. ![]()
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