ACMDRVSTREAMSIZE (Compact 2013)

3/26/2014

This structure contains information needed by an ACM driver to respond to an ACMDM_STREAM_SIZE message.

Syntax

typedef struct {
  DWORD cbStruct;
  DWORD fdwSize;
  DWORD cbSrcLength;
  DWORD cbDstLength;
} ACMDRVSTREAMSIZE;

cbStruct
Value that specifies the size, in bytes, of the ACMDRVSTREAMSIZE structure.

fdwSize
Value that indicates the query type. The following table shows the possible values for fdwSize.

Value	Description
ACM_STREAMSIZEF_SOURCE	Value that indicates that the client has specified the size, in bytes, of a source buffer in the cbSrcLength member. The driver returns the required destination buffer length in cbDstLength.
ACM_STREAMSIZEF_DESTINATION	Value that indicates that the client has specified the size, in bytes, of a destination buffer in the cbDstLength member. The driver returns the required source buffer length in cbSrcLength.

cbSrcLength
Value that specifies the size, in bytes, of the source buffer. The flag value specified in fdwSize indicates whether this value is supplied by the client or by the driver.

cbDstLength
Value that specifies the size, in bytes, of the destination buffer. The flag value specified in fdwSize indicates whether this value is supplied by the client or by the driver.

Header

msacmdrv.h