Please keep the list in the thread. You would need to ask TI. My guess is that depending on how the audio device is 'plumbed in' to the EVM it will either be a lot of work or a 30 second fix. The fact that is hasn't been done suggests to me that it is a lot of work ;-) Regards Phil Q Phil Quiney, Senior Software Engineer Trinity Convergence Cambridge Business Park Cowley Road Cambridge CB4 0WZ, UK T: +44(0)1223-435536 F: +44(0)1223-435560 www.trinityconvergence.com <http://www.trinityconvergence.com/>
________________________________ From: amr ali [mailto:[EMAIL PROTECTED] Sent: 22 September 2008 10:25 To: Phil Quiney Subject: RE: OSS Device Driver Hi, Can the Device Driver be edited to support mono operation? BR, Amr. ________________________________ Subject: RE: OSS Device Driver Date: Mon, 22 Sep 2008 10:20:20 +0100 From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] It must be doing a mono->stereo conversion internally. This is what we have to do to get mono playback to work on the DM6446 in our application that directly accesses /dev/dsp. If you are running full duplex you need to do a stareo->mono conversion on the input as well. The same application will happily work on other targets that do support mono so it is not an application thing. Regards Phil Q Phil Quiney, Senior Software Engineer Trinity Convergence Cambridge Business Park Cowley Road Cambridge CB4 0WZ, UK T: +44(0)1223-435536 F: +44(0)1223-435560 www.trinityconvergence.com <http://www.trinityconvergence.com/> ________________________________ From: amr ali [mailto:[EMAIL PROTECTED] Sent: 22 September 2008 10:07 To: Phil Quiney Subject: RE: OSS Device Driver Hi, But how does mpg123 player plays mono files?!!! BR, Amr. ________________________________ Subject: RE: OSS Device Driver Date: Mon, 22 Sep 2008 10:04:45 +0100 From: [EMAIL PROTECTED] To: [EMAIL PROTECTED]; [email protected] Hi, The driver does not do mono. If you attempt to play a mono stream it will go 'clicky' as the driver will 'use up' the input in half the time as it is expecting stereo data. The 'set channels' ioctl used to set mono appears to succeed - it is ignored, the driver is still stereo ;-) Regards Phil Q Phil Quiney, Senior Software Engineer Trinity Convergence Cambridge Business Park Cowley Road Cambridge CB4 0WZ, UK T: +44(0)1223-435536 F: +44(0)1223-435560 www.trinityconvergence.com <http://www.trinityconvergence.com/> ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of amr ali Sent: 22 September 2008 09:56 To: [email protected] Subject: RE: OSS Device Driver Hi, I did a lot of tests. I used the mp3 player mpg123 and VLCfor mp3 playback. mpg123 never failed, while VLC fails on mono only. You have any clue? BR, Amr Ali. ________________________________ Connect to the next generation of MSN Messenger Get it now! <http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline> ________________________________ Explore the seven wonders of the world Learn more! <http://search.msn.com/results.aspx?q=7+wonders+world&mkt=en-US&form=QBRE> ________________________________ Explore the seven wonders of the world Learn more! <http://search.msn.com/results.aspx?q=7+wonders+world&mkt=en-US&form=QBRE>
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