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acmFormatTagDetails
The acmFormatTagDetails function queries the ACM for details on a specific waveform-audio format tag.
MMRESULT acmFormatTagDetails(
HACMDRIVER had,
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| LPACMFORMATTAGDETAILS paftd,
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| DWORD fdwDetails
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| );
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Parameters
had
Handle of the ACM driver to query for waveform-audio format tag details. If
this parameter is NULL, the ACM uses the details from the first suitable ACM
driver. An application must specify a valid handle or driver identifier when using
the ACM_FORMATTAGDETAILSF_INDEX query type. Driver identifiers for disabled
drivers are not allowed.
paftd
Address of the ACMFORMATTAGDETAILS structure that is to receive the format tag details.
fdwDetails
Flags for getting the details. The following values are defined:
ACM_FORMATTAGDETAILSF_FORMATTAG
A format tag was given in the dwFormatTag member of the ACMFORMATTAGDETAILS structure. The format tag details will be returned in the structure pointed
to by paftd. If an application specifies an ACM driver handle for had, details on the format tag will be returned for that driver. If an
application specifies NULL for had, the ACM finds the first acceptable driver to return the details.
ACM_FORMATTAGDETAILSF_INDEX
A format tag index was given in the dwFormatTagIndex member of the ACMFORMATTAGDETAILS structure. The format tag and details will be returned in the structure
defined by paftd. The index ranges from zero to one less than the cFormatTags member returned in the ACMDRIVERDETAILS structure for an ACM driver. An application must specify a driver handle for had when retrieving format tag details with this flag.
ACM_FORMATTAGDETAILSF_LARGESTSIZE
Details on the format tag with the largest format size, in bytes, are to be
returned. The dwFormatTag member of the ACMFORMATTAGDETAILS structure must either be WAVE_FORMAT_UNKNOWN or the format tag to find the
largest size for. If an application specifies an ACM driver handle for had, details on the largest format tag will be returned for that driver. If an
application specifies NULL for had, the ACM finds an acceptable driver with the largest format tag requested to
return the details.
Return Values
Returns zero if successful or an error otherwise. Possible error values
include the following:
ACMERR_NOTPOSSIBLE
| The details requested are not available.
| MMSYSERR_INVALFLAG
| At least one flag is invalid.
| MMSYSERR_INVALHANDLE
| The specified handle is invalid.
| MMSYSERR_INVALPARAM
| At least one parameter is invalid.
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See Also
ACMFORMATTAGDETAILS, ACMDRIVERDETAILS
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