| UID | title | description | helpviewer_keywords | old-location | tech.root | ms.assetid | ms.date | ms.keywords | req.header | req.include-header | req.target-type | req.target-min-winverclnt | req.target-min-winversvr | req.kmdf-ver | req.umdf-ver | req.ddi-compliance | req.unicode-ansi | req.idl | req.max-support | req.namespace | req.assembly | req.type-library | req.lib | req.dll | req.irql | targetos | req.typenames | req.redist | ms.custom | f1_keywords | dev_langs | topic_type | api_type | api_location | api_name | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NC:msacm.ACMFILTERTAGENUMCB |
ACMFILTERTAGENUMCB (msacm.h) |
The ACMFILTERTAGENUMCB callback function specifies a callback function used with the acmFilterTagEnum function. |
|
multimedia\acmfiltertagenumcallback.htm |
Multimedia |
63469be1-d657-4e95-9978-d31140ccd46f |
08/02/2022 |
ACMFILTERTAGENUMCB, ACMFILTERTAGENUMCB callback, ACMFILTERTAGENUMCBA, ACMFILTERTAGENUMCBW, _win32_acmFilterTagEnumCallback, acmFilterTagEnumCallback, acmFilterTagEnumCallback callback function [Windows Multimedia], msacm/ACMFILTERTAGENUMCBA, msacm/ACMFILTERTAGENUMCBW, msacm/acmFilterTagEnumCallback, multimedia.acmfiltertagenumcallback |
msacm.h |
Windows |
Windows 2000 Professional [desktop apps only] |
Windows 2000 Server [desktop apps only] |
Windows |
19H1 |
|
|
|
|
|
|
The acmFilterTagEnumCallback function specifies a callback function used with the acmFilterTagEnum function. The acmFilterTagEnumCallback function name is a placeholder for an application-defined function name.
Handle to the ACM driver identifier.
Pointer to an ACMFILTERTAGDETAILS structure that contains the enumerated filter tag details.
Application-defined value specified in acmFilterTagEnum.
Driver-support flags specific to the driver identifier ACMDRIVERDETAILS structure. This parameter can be a combination of the following values and identifies which operations the driver supports with the filter tag.
| Value | Meaning |
|---|---|
| ACMDRIVERDETAILS_SUPPORTF_ASYNC | Driver supports asynchronous conversions with the specified filter tag. |
| ACMDRIVERDETAILS_SUPPORTF_CODEC | Driver supports conversion between two different format tags while using the specified filter tag. For example, if a driver supports compression from WAVE_FORMAT_PCM to WAVE_FORMAT_ADPCM with the specified filter tag, this flag is set. |
| ACMDRIVERDETAILS_SUPPORTF_CONVERTER | Driver supports conversion between two different formats of the same format tag while using the specified filter tag. For example, if a driver supports resampling of WAVE_FORMAT_PCM with the specified filter tag, this flag is set. |
| ACMDRIVERDETAILS_SUPPORTF_FILTER | Driver supports a filter (modification of the data without changing any of the format attributes). For example, if a driver supports volume or echo operations on WAVE_FORMAT_PCM, this flag is set. |
| ACMDRIVERDETAILS_SUPPORTF_HARDWARE | Driver supports hardware input, output, or both with the specified filter tag through a waveform-audio device. An application should use the acmMetrics function with the ACM_METRIC_HARDWARE_WAVE_INPUT and ACM_METRIC_HARDWARE_WAVE_OUTPUT metric indices to get the waveform-audio device identifiers associated with the supporting ACM driver. |
The callback function must return TRUE to continue enumeration or FALSE to stop enumeration.
The acmFilterTagEnum function returns MMSYSERR_NOERROR (zero) if no filter tags are to be enumerated. Moreover, the callback function will not be called.
The following functions should not be called from within the callback function: acmDriverAdd, acmDriverRemove, and acmDriverPriority.