MF_SINK_WRITER_STATISTICS structure (mfreadwrite.h)
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
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 7 [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2008 R2 [desktop apps | UWP apps] |
| Header | mfreadwrite.h |