WM_WRITER_STATISTICS structure (wmsdkidl.h)
[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The WM_WRITER_STATISTICS structure describes the performance of a writing operation.
Syntax
typedef struct _WMWriterStatistics {
QWORD qwSampleCount;
QWORD qwByteCount;
QWORD qwDroppedSampleCount;
QWORD qwDroppedByteCount;
DWORD dwCurrentBitrate;
DWORD dwAverageBitrate;
DWORD dwExpectedBitrate;
DWORD dwCurrentSampleRate;
DWORD dwAverageSampleRate;
DWORD dwExpectedSampleRate;
} WM_WRITER_STATISTICS;
Members
qwSampleCount
QWORD containing the sample count.
qwByteCount
QWORD containing the byte count.
qwDroppedSampleCount
QWORD containing the dropped sample count.
qwDroppedByteCount
QWORD containing the dropped byte count.
dwCurrentBitrate
DWORD containing the current bit rate.
dwAverageBitrate
DWORD containing the average bit rate.
dwExpectedBitrate
DWORD containing the expected bit rate.
dwCurrentSampleRate
DWORD containing the current sample rate.
dwAverageSampleRate
DWORD containing the average sample rate.
dwExpectedSampleRate
DWORD containing the expected sample rate.
Remarks
Sample rates are specified in kilohertz. For instance, a sample rate of 8 indicates 8000 samples per second.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only],Windows Media Format 7 SDK, or later versions of the SDK |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Header | wmsdkidl.h (include Wmsdk.h) |