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 It has been superseded by Source Reader and Sink Writer.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

See also

IWMWriterAdvanced::GetStatistics

Structures