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AcxDataFormatGetChannelMask function (acxdataformat.h)

  • Article

The AcxDataFormatGetChannelMask function gets the channel mask for the specified data format.

Syntax

ULONGLONG AcxDataFormatGetChannelMask(
  [in] ACXDATAFORMAT DataFormat
);

Parameters

[in] DataFormat

The data format for which to retrieve the channel mask.

Return value

Returns a ULONGLONG value containing the channel mask.

Remarks

The channel mask specifies the mapping of channels to speakers.

The following table shows the meaning of each bit in the channel mask:

Bit number Speaker position Description
0 FL Front left
1 FR Front right
2 FC Front center
3 LFE Low-frequency effects
4 BL Back left
5 BR Back right
6 FLC Front left of center
7 FRC Front right of center
8 BC Back center
9 SL Side left
10 SR Side right

ACX requirements

Minimum ACX version: 1.0

For more information about ACX versions, see ACX version overview.

Requirements

Requirement Value
Header acxdataformat.h
IRQL <= DISPATCH_LEVEL

See also