Param target_level sanity check - 4 * buffer size instead of 2 * buffer size

[pavhofman]

IIUC commit 442ca85 changed standard alsa buffer size from 2 chunks to 4 chunks. IMO the target_level check

camilladsp/src/config.rs

Lines 1662 to 1666 in 76aa55d

	if conf.devices.target_level() >= 2 * conf.devices.chunksize {
	let msg = format!(
	"target_level can't be larger than {}",
	2 * conf.devices.chunksize
	);

should be raised accordingly, so that any value up to buffer size can be assigned.

My tests on a low-power CPU USB gadget -> resampling -> I2S -> gadget loopback where the capture + resampling thread takes > 70% of CPU core suggest the optimal target_limit value for such a use case would be 3 * chunksize. The above change would allow that value.

Thanks a lot for considering,

Pavel.

[HEnquist]

Thanks! I forgot to change the limit in the check, will do!

[HEnquist]

Fixed in ca25bda