int
SoundTestWaveDevice(
IN PDEVICE_OBJECT pDO
);
The SoundTestWaveDevice function initiates a short DMA transfer to determine if the specified waveform device’s interrupt number and DMA channel number are set correctly.
Parameters
pDO
Pointer to the waveform device’s device object. To obtain a device object, call SoundCreateDevice.
Return Value
Returns one of the following values.
| Value | Definition |
| 0 | Operation succeeded. |
| 1 | Interrupt number is invalid. |
| 2 | DMA channel number is invalid. |
Comments
Use the SoundTestWaveDevice function only if no other means for establishing interrupt and DMA channel numbers are available.
This function only works for devices that perform auto-initialize DMA transfers.
Drivers calling SoundTestWaveDevice must include wave.h.