wave/out
The wave/out
device class consists of audio devices for low-level wave audio output. You
access these devices by using the wave functions, which are described in the
Win32 SDK. Devices in this class are associated with line devices that support
the LINEMEDIAMODE_AUTOMATEDVOICE media mode, which is specified in the dwMediaModes
member of the LINEDEVCAPS
structure for the line device.
The lineGetID and phoneGetID functions fill a VARSTRING structure, setting the dwStringFormat
member to the STRINGFORMAT_BINARY value and appending this additional member:
DWORD DeviceId;
// identifier of audio device
The DeviceId
member is the identifier of a closed audio device. You use this identifier in a
call to the waveOutOpen function to open the device for output. You can
use the resulting device handle to play digitized audio data at the line or
phone device.
Although a
"wave" device class also exists for low-level wave audio devices, you
should always use the wave/out device class for low-level wave output.