WM_LEAKY_BUCKET_PAIR 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 It has been superseded by Source Reader and Sink Writer.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_LEAKY_BUCKET_PAIR structure describes the buffering requirements for a VBR file. This structure is used with the ASFLeakyBucketPairs attribute.

Syntax

typedef struct _WMLeakyBucketPair {
  DWORD dwBitrate;
  DWORD msBufferWindow;
} WM_LEAKY_BUCKET_PAIR;

Members

dwBitrate

Bit rate, in bits per second.

msBufferWindow

Size of the buffer window, in milliseconds.

Remarks

The ASFLeakyBucketPairs attribute gives a list of bit rates and corresponding buffer windows. For each bit rate, the msBufferWindow member indicates how much content the reader object will buffer before it begins playback. The size of the buffer in bytes equals msBufferWindow x dwBitrate / 8000.

Requirements

See also

Structures