Hi , i am using a OSS based usbaudio application for usb audio streaming .
my usb audio device is capture only device . i want to set the fragment size of usbaudio alsa driver to reduce latency problem coming in my application . currently even if my application reads 4k data from userspace , i observed driver will buffer for 100 ms data ( period size data )= 16 k at 44100 frquency and after driver reads 16k data , read call will return with 4k data . so read() call remains blocked for 100ms which is causing some latency problem . i used SNDCTL_DSP_SETFRAGMENT ioctl , but still driver behaviour to buffer 100ms data remained same . how driver's fragment size in driver can be set to some less value in OSS based application . Can some patch be implemented in kernel space to do that .? Thanx & Regards Amit Nagal ------------------------------------------------------------------------------ Oracle to DB2 Conversion Guide: Learn learn about native support for PL/SQL, new data types, scalar functions, improved concurrency, built-in packages, OCI, SQL*Plus, data movement tools, best practices and more. http://p.sf.net/sfu/oracle-sfdev2dev _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
