WAVEOUTCAPS

typedef struct waveoutcaps_tag {
    UINT  wMid;
    UINT  wPid;
    VERSION  vDriverVersion;
    char  szPname[MAXPNAMELEN];
    DWORD  dwFormats;
    UINT  wChannels;
    DWORD  dwSupport;
} WAVEOUTCAPS;

The WAVEOUTCAPS structure describes the capabilities of a waveform output device.

Members

wMid
Specifies a manufacturer ID for the device driver for the waveform output device. Manufacturer IDs are defined in the Multimedia Programmer's Reference in the Microsoft Windows Software Development Kit.
wPid
Specifies a product ID for the waveform output device. Product IDs are defined in the Multimedia Programmer's Reference in the Microsoft Windows Software Development Kit.
vDriverVersion
Specifies the version number of the device driver for the waveform output device. The high-order byte is the major version number, and the low-order byte is the minor version number. The numbering is up to the driver developer but should be changed with each driver release.
szPname[MAXPNAMELEN]
Specifies the product name in a NULL-terminated string.
dwFormats
Specifies which standard formats are supported. The supported formats are specified with a logical OR of the following flags:
WAVE_FORMAT_1M08 11.025 kHz, Mono, 8-bit
WAVE_FORMAT_1S08 11.025 kHz, Stereo, 8-bit
WAVE_FORMAT_1M16 11.025 kHz, Mono, 16-bit
WAVE_FORMAT_1S16 11.025 kHz, Stereo, 16-bit
WAVE_FORMAT_2M08 22.05 kHz, Mono, 8-bit
WAVE_FORMAT_2S08 22.05 kHz, Stereo, 8-bit
WAVE_FORMAT_2M16 22.05 kHz, Mono, 16-bit
WAVE_FORMAT_2S16 22.05 kHz, Stereo, 16-bit
WAVE_FORMAT_4M08 44.1 kHz, Mono, 8-bit
WAVE_FORMAT_4S08 44.1 kHz, Stereo, 8-bit
WAVE_FORMAT_4M16 44.1 kHz, Mono, 16-bit
WAVE_FORMAT_4S16 44.1 kHz, Stereo, 16-bit

wChannels
Specifies whether the device supports mono (1) or stereo (2) output.
dwSupport
Specifies optional functionality supported by the device.
WAVECAPS_PITCH Supports pitch control.
WAVECAPS_PLAYBACKRATE Supports playback rate control.
WAVECAPS_VOLUME Supports volume control.
WAVECAPS_LRVOLUME Supports separate left and right volume control.

Drivers can support other formats in addition to those specified in the dwFormats field. If a device supports volume changes, the WAVECAPS_VOLUME flag will be set for the dwSupport field. If a device supports separate volume changes on the left and right channels, both the WAVECAPS_VOLUME and the WAVECAPS_LRVOLUME flags will be set for this field.

See Also

WODM_GETDEVCAPS