WAVEOUTCAPS structure
The WAVEOUTCAPS structure describes the capabilities of a waveform-audio output device.
Syntax
typedef struct {
WORD wMid;
WORD wPid;
MMVERSION vDriverVersion;
TCHAR szPname[MAXPNAMELEN];
DWORD dwFormats;
WORD wChannels;
WORD wReserved1;
DWORD dwSupport;
} WAVEOUTCAPS;
Members
wMid
Manufacturer identifier for the device driver for the device. Manufacturer identifiers are defined in Manufacturer and Product Identifiers.wPid
Product identifier for the device. Product identifiers are defined in Manufacturer and Product Identifiers.vDriverVersion
Version number of the device driver for the device. The high-order byte is the major version number, and the low-order byte is the minor version number.szPname
Product name in a null-terminated string.dwFormats
Standard formats that are supported. Can be a combination of the following:Format Description WAVE_FORMAT_1M08 11.025 kHz, mono, 8-bit WAVE_FORMAT_1M16 11.025 kHz, mono, 16-bit WAVE_FORMAT_1S08 11.025 kHz, stereo, 8-bit WAVE_FORMAT_1S16 11.025 kHz, stereo, 16-bit WAVE_FORMAT_2M08 22.05 kHz, mono, 8-bit WAVE_FORMAT_2M16 22.05 kHz, mono, 16-bit WAVE_FORMAT_2S08 22.05 kHz, stereo, 8-bit WAVE_FORMAT_2S16 22.05 kHz, stereo, 16-bit WAVE_FORMAT_4M08 44.1 kHz, mono, 8-bit WAVE_FORMAT_4M16 44.1 kHz, mono, 16-bit WAVE_FORMAT_4S08 44.1 kHz, stereo, 8-bit WAVE_FORMAT_4S16 44.1 kHz, stereo, 16-bit WAVE_FORMAT_96M08 96 kHz, mono, 8-bit WAVE_FORMAT_96M16 96 kHz, mono, 16-bit WAVE_FORMAT_96S08 96 kHz, stereo, 8-bit WAVE_FORMAT_96S16 96 kHz, stereo, 16-bit wChannels
Number specifying whether the device supports mono (1) or stereo (2) output.wReserved1
Packing.dwSupport
Optional functionality supported by the device. The following values are defined:Flag Description WAVECAPS_LRVOLUME Supports separate left and right volume control. WAVECAPS_PITCH Supports pitch control. WAVECAPS_PLAYBACKRATE Supports playback rate control. WAVECAPS_SYNC The driver is synchronous and will block while playing a buffer. WAVECAPS_VOLUME Supports volume control. WAVECAPS_SAMPLEACCURATE Returns sample-accurate position information.
Remarks
If a device supports volume changes, the WAVECAPS_VOLUME flag will be set for the dwSupport member. 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 member.
Requirements
Minimum supported client |
Windows 2000 Professional [desktop apps only] |
Minimum supported server |
Windows 2000 Server [desktop apps only] |
Header |
Mmsystem.h (include Windows.h) |