HRESULT GetCaps(LPDSCAPS lpDSCaps);
Retrieves the capabilities of the hardware device that is represented by the DirectSound object.
·Returns DS_OK if successful, or one of the following error values otherwise:
lpDSCaps
Address of the DSCAPS structure to contain the capabilities of this sound device.
Information retrieved in the DSCAPS structure describes the maximum capabilities of the sound device and those currently available, such as the number of hardware mixing channels and the amount of onboard sound memory. You can use this information to fine-tune performance and optimize resource allocation.
Because of resource-sharing requirements, the maximum capabilities in one area might be available only at the cost of another area. For example, the maximum number of hardware-mixed streaming sound buffers might be available only if there are no hardware static sound buffers.