acmFormatSuggest

The acmFormatSuggest function queries the ACM or a specified ACM driver to suggest a destination format for the supplied source format. For example, an application can use this function to determine one or more valid PCM formats to which a compressed format can be decompressed.

MMRESULT acmFormatSuggest(
  HACMDRIVER had,          
  LPWAVEFORMATEX pwfxSrc,  
  LPWAVEFORMATEX pwfxDst,  
  DWORD cbwfxDst,          
  DWORD fdwSuggest         
);

Parameters

had

Handle to an open instance of a driver to query for a suggested destination format. If this parameter is NULL, the ACM attempts to find the best driver to suggest a destination format.

pwfxSrc

Pointer to a WAVEFORMATEX structure that identifies the source format for which a destination format will be suggested by the ACM or specified driver.

pwfxDst

Pointer to a WAVEFORMATEX structure that will receive the suggested destination format for the pwfxSrc format. Depending on the fdwSuggest parameter, some members of the structure pointed to by pwfxDst may require initialization.

cbwfxDst

Size, in bytes, available for the destination format. The acmMetrics and acmFormatTagDetails functions can be used to determine the maximum size required for any format available for the specified driver (or for all installed ACM drivers).

fdwSuggest

Flags for matching the desired destination format. The following values are defined.

Return Values

Returns zero if successful or an error otherwise. Possible error values include the following.

Requirements

**  Windows NT/2000/XP:** Included in Windows NT 3.1 and later.
**  Windows 95/98/Me:** Included in Windows 95 and later.
**  Header:** Declared in Msacm.h.
**  Library:** Use Msacm32.lib.

See Also

Audio Compression Manager, Audio Compression Functions, WAVEFORMATEX, acmMetrics, acmFormatTagDetails