File Formats: XR / Microsoft HD Photo File Format (HDP)

JPEG XR is the name selected by the JPEG committee for standardization of the HD Photo file format. HD Photo can be considered to be an implementation of the JPEG XR specification. The HD Photo file format is a raster file format developed by Microsoft and it is supported by the Microsoft Photo Info application. This file format is mainly used for cross-platform image exchange, especially with handhelds, PDAs and limited-capability devices. The support for JPEG XR available in Windows Imaging Component, .NET Framework (3.0 or newer), Windows Vista/Windows 7, Internet Explorer 9, and a number of other products.

LEADTOOLS supports version 1.0 of this format.

This file format supports QFactor. Possible values can be a value between 2 and 255 (lossy compression), or value 0 (lossless compression).

This file format supports loading and saving JPEG XR lossy and lossless compressions.

The file format does not support multi-page files.

The default extension for JPEG-XR format is: JXR.

The default extension for HDP format is: HDP.

You can read and write 16-bit grayscale. (Document/Medical only).

For more information, please refer to http://www.microsoft.com/windows/windowsmedia/forpros/wmphoto/.

The file constants associated with this file format are:

WIC Codec CLSID	WIC Codec Subformat	Constant	Read Support	Write Support	Description
CLSID_WICLeadHdpEncoder	WICLeadSubFormatHdp	Hdp	1, 8, 16, 24, 32, 48, 64 BPP	1, 8, 16, 24, 32, 48, 64 BPP	HD Photo - RGB
CLSID_WICLeadHdpEncoder	WICLeadSubFormatHdpGray	HdpGray	16 BPP (Grayscale)	16 BPP (Grayscale)	HD Photo - Grayscale
CLSID_WICLeadHdpEncoder	WICLeadSubFormatHdpCmyk	HdpCmyk	32 BPP	32 BPP	HD Photo - CMYK
		Jxr	1, 8, 16, 24, 32, 48, 64 BPP	1, 8, 16, 24, 32, 48, 64 BPP	JPEG-XR - RGB Platforms: .NET 2/3, .NET 4, Silverlight, Silverlight Windows Phone 7, Android and WinRT
		JxrGray	16 BPP (Grayscale)	16 BPP (Grayscale)	JPEG-XR - Grayscale Platforms: .NET 2/3, .NET 4, Silverlight, Silverlight Windows Phone 7 and WinRT
		JxrCmyk	32 BPP	32 BPP	JPEG-XR - CMYK Platforms: .NET 2/3, .NET 4, Silverlight, Silverlight Windows Phone 7 and WinRT
		Jxr420	24 BPP	24 BPP	JPEG-XR - YUV 4:2:0 Platforms: .NET 2/3, .NET 4, Silverlight, Silverlight Windows Phone 7 and WinRT
		Jxr422	24 BPP	24 BPP	JPEG-XR - YUV 4:2:2 Platforms: .NET 2/3, .NET 4, Silverlight, Silverlight Windows Phone 7 and WinRT
		Jxr	24 BPP	24 BPP	JPEG-XR - YUV 4:4:4 Platforms: .NET 2/3, .NET 4, Silverlight, Silverlight Windows Phone 7, Android and WinRT

Required DLL: Leadtools.Codecs.Hdp.dll for HD Photo or Leadtools.Codecs.Jxr.dll for JPEG-XR. For a listing of the exact DLLs needed, based on the toolkit version, refer to Files To Be Included With Your Application.

For loading or saving CMYK files or LAB color space files, you will also need Leadtools.ColorConversion.dll.

Platforms: .NET 2/3, .NET 4