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MF_SINK_WRITER_STATISTICS structure

Contains statistics about the performance of the sink writer.

Syntax


typedef struct _MF_SINK_WRITER_STATISTICS {
  DWORD    cb;
  LONGLONG llLastTimestampReceived;
  LONGLONG llLastTimestampEncoded;
  LONGLONG llLastTimestampProcessed;
  LONGLONG llLastStreamTickReceived;
  LONGLONG llLastSinkSampleRequest;
  QWORD    qwNumSamplesReceived;
  QWORD    qwNumSamplesEncoded;
  QWORD    qwNumSamplesProcessed;
  QWORD    qwNumStreamTicksReceived;
  DWORD    dwByteCountQueued;
  QWORD    qwByteCountProcessed;
  DWORD    dwNumOutstandingSinkSampleRequests;
  DWORD    dwAverageSampleRateReceived;
  DWORD    dwAverageSampleRateEncoded;
  DWORD    dwAverageSampleRateProcessed;
} MF_SINK_WRITER_STATISTICS;

Members

cb

The size of the structure, in bytes.

llLastTimestampReceived

The time stamp of the most recent sample given to the sink writer. The sink writer updates this value each time the application calls IMFSinkWriter::WriteSample.

llLastTimestampEncoded

The time stamp of the most recent sample to be encoded. The sink writer updates this value whenever it calls IMFTransform::ProcessOutput on the encoder.

llLastTimestampProcessed

The time stamp of the most recent sample given to the media sink. The sink writer updates this value whenever it calls IMFStreamSink::ProcessSample on the media sink.

llLastStreamTickReceived

The time stamp of the most recent stream tick. The sink writer updates this value whenever the application calls IMFSinkWriter::SendStreamTick.

llLastSinkSampleRequest

The system time of the most recent sample request from the media sink. The sink writer updates this value whenever it receives an MEStreamSinkRequestSample event from the media sink. The value is the current system time.

qwNumSamplesReceived

The number of samples received.

qwNumSamplesEncoded

The number of samples encoded.

qwNumSamplesProcessed

The number of samples given to the media sink.

qwNumStreamTicksReceived

The number of stream ticks received.

dwByteCountQueued

The amount of data, in bytes, currently waiting to be processed.

qwByteCountProcessed

The total amount of data, in bytes, that has been sent to the media sink.

dwNumOutstandingSinkSampleRequests

The number of pending sample requests.

dwAverageSampleRateReceived

The average rate, in media samples per 100-nanoseconds, at which the application sent samples to the sink writer.

dwAverageSampleRateEncoded

The average rate, in media samples per 100-nanoseconds, at which the sink writer sent samples to the encoder.

dwAverageSampleRateProcessed

The average rate, in media samples per 100-nanoseconds, at which the sink writer sent samples to the media sink.

Requirements

Minimum supported client

Windows 7 [desktop apps | Windows Store apps]

Minimum supported server

Windows Server 2008 R2 [desktop apps | Windows Store apps]

Header

Mfreadwrite.h

See also

Media Foundation Structures
IMFSinkWriter::GetStatistics

 

 

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