At Mon, 01 Aug 2005 00:37:26 +0800,
Raymond wrote:
Jaroslav Kysela wrote:
On Thu, 28 Jul 2005, Raymond wrote:
In theory, and sound cards with hardware mixing can support this kind of
volume control.
Nope. Please, define the controls at the driver initialization phase and
make them inactive when the stream is not open. See emu10k1 or trident
driver for hints. You must also map the voice volume with substream
number.
Beside volume control, Is it feasible to bind other controls (e.g.
Interaural Time Difference, Interaural Level Difference and SAMPLE RATE
CONVERTOR - Doppler Effect ) to the substream ?
I think yes. Whatever directly bound to a PCM substream should be
handled as IFACE_PCM with a certain subdevice number.