WM_READER_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 It has been superseded by Source Reader and Sink Writer.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_READER_STATISTICS structure describes the performance of a reading operation.

Syntax

typedef struct _WMReaderStatistics {
  DWORD cbSize;
  DWORD dwBandwidth;
  DWORD cPacketsReceived;
  DWORD cPacketsRecovered;
  DWORD cPacketsLost;
  WORD  wQuality;
} WM_READER_STATISTICS;

Members

cbSize

The size of the WM_READER_STATISTICS structure, in bytes.

dwBandwidth

DWORD containing the bandwidth, in bits per second.

cPacketsReceived

Count of packets received.

cPacketsRecovered

Count of lost packets which were recovered. This value is only relevant during network playback.

cPacketsLost

Count of lost packets which were not recovered. This value is only relevant during network playback.

wQuality

WORD containing the quality, which is the percentage of total packets that were received.

Remarks

You must set the cbSize member manually before using this structure. It should always be set to sizeof(WM_READER_STATISTICS).

Requirements

See also

IWMReaderAdvanced::GetStatistics

Structures