WindowsMediaNet Library

The purpose of this library is to allow access to Windows Media Format functionality from within .NET. Additionally, it provides definitions for the waveIn*, waveOut*, mixer* and MMIO* methods of the Windows Multimedia SDK.

Reviewing the source code in this library will show that there is very little executable code in this library. There are a few helper functions (mostly in WMUtils.cs), but everything else in the library is just definitions. Although there are ~106 interfaces defined in the source code, only some of them have been tested to ensure that they are working (see below).

WindowsMediaNet Samples

This is the current list of samples along with a short description. See the readme.txt in the individual samples for more details. Note that these samples should not be considered commercial quality, but can form the basis of your own code.

AsfCreate - Creates an Asf or WMV file from a collection of bitmaps

AsfNet - Sends the output of DirectShow capture graphs to a network port to be read by Windows Media Player

AudioPlayer - Play the audio portion of a windows media file

DESCombine- Join and split files, outputting data to a WM file.

DrmHeader - Show the DRM attributes of a file

GenerateLa - Builds (and plays) a wave buffer that contains a beep.

ReadFromStream - Walk the samples in a file where the source is an IStream

RecordWav - Record audio data from a microphone to a .wav file

WMProp - Show file properties for WM files

WMVCopy - Code to copy a file

Interfaces

Tested interfaces ready to use:

These methods are also defined in the library:

These interfaces are in the source code, but are deprecated, undocumented or otherwise untestable:

• IWMDeviceRegistration - Requires special HW (and DRM)
• IWMDRMMessageParser - Requires DRM which can't be done w/o input from MS
• IWMDRMReader - Requires DRM which can't be done w/o input from MS
• IWMDRMReader2 - Requires DRM which can't be done w/o input from MS
• IWMDRMReader3 - Requires DRM which can't be done w/o input from MS
• IWMDRMTranscryptionManager - Requires DRM which can't be done w/o input from MS
• IWMDRMTranscryptor - Requires DRM which can't be done w/o input from MS
• IWMDRMTranscryptor2 - DRM which can't be done w/o input from MS
• IWMDRMWriter - Requires DRM which can't be done w/o input from MS
• IWMDRMWriter2 - Requires DRM which can't be done w/o input from MS
• IWMDRMWriter3 - Requires DRM which can't be done w/o input from MS
• IWMLicenseRevocationAgent - Requires DRM which can't be done w/o input from MS
• IWMProximityDetection - Requires DRM which can't be done w/o input from MS
• IWMReaderAdvanced6 - Requires DRM which can't be done w/o input from MS
• IWMRegisteredDevice - Requires special HW (and DRM)
• IWMCodecVideoAccelerator - interface is not supported (http://msdn.microsoft.com/en-us/library/dd743265(v=vs.85).aspx)
• IWMImageInfo - Deprecated (http://msdn.microsoft.com/en-us/library/dd798528(v=vs.85).aspx)
• IWMWatermarkInfo - "No watermarking DMOs are provided with the Windows Media Format SDK" http://msdn.microsoft.com/en-us/library/dd798717(v=vs.85).aspx
• IWMSBufferAllocator - This interface is available only on Windows Server 2003 (http://msdn.microsoft.com/en-us/library/dd743699(v=vs.85).aspx)
• IWMReaderTimecode - Due to an MS bug, it isn't possible to create SMTPE indices, which this interface requires

These 3 interfaces are only useful when writing a DirectShow filter (see http://msdn.microsoft.com/en-us/library/dd798058.aspx). Since you can't do that in c#, there's no reason (in fact, no way) to test these.

• IWMCodecAMVideoAccelerator
• IWMPlayerTimestampHook
• IWMReaderAccelerator