IWMSDataContainer.Read (C#)
The server calls the Read method to read data from the data container into a buffer.
void IWMSDataContainer.Read(
ref byte[] pbBuffer,
ulong qwOffset,
uint dwMaxDataSize,
uint dwFlags,
IWMSDataContainerCallback pCallback,
ulong qwContext
);
Arguments
Reference to a byte array identifying the buffer to be filled with data from the data container. |
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ulong specifying the offset in bytes from which the data should be read. This must be WMS_DATA_CONTAINER_NONSEEKABLE for data containers that do not support seeking. For example, a live source cannot be seekable, but a file can be. |
|
uint specifying the maximum data size in bytes to be read from the data container. |
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Reserved for future use. |
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IWMSDataContainerCallbackIWMSDataContainerCallback Object (C#) containing the callback function. The plug-in calls IWMSDataContainerCallback.OnRead to respond to the server. |
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ulong containing a value defined by the server to identify which Read request the plug-in is responding to when it calls IWMSDataContainerCallback.OnRead. The plug-in must pass this value back unaltered. |
Return Value
This method does not return a value. To report an error, the plug-in can throw a COMException object to the server. If the plug-in uses the IWMSEventLogIWMSEventLog Object (C#) to log error information, it is recommended that it throw NS_E_PLUGIN_ERROR_REPORTED (0xC00D157D). Typically, the server attempts to make plug-in error information available to the server object model, the Windows Event Viewer, and the troubleshooting list in the details pane of the Windows Media Services MMC. However, if the plug-in uses the IWMSEventLog object to send custom error information to the Windows Event Viewer, throwing NS_E_PLUGIN_ERROR_REPORTED stops the server from also logging to the event viewer. For more information about plug-in error information, see Identifying Plug-in Errors.
Requirements
Reference: Add a reference to Microsoft.WindowsMediaServices.
Namespace: Microsoft.WindowsMediaServices.Interop.
Assembly: Microsoft.WindowsMediaServices.dll.
Library: WMSServerTypeLib.dll.
Platform: Windows Server 2003, Enterprise Edition; Windows Server 2003, Datacenter Edition; Windows Server 2008.