On Tue, 2009-06-16 at 09:03 +0530, Santosh Singh wrote: > Hi Mohamed, > > Thanks for response. > > But I am able to play for a longer period without any problem. > > My problem is with start stop many time the player /dev/dsp sound goes > off which comes back after hard (hardware) reboot only not with > software reboot command. > > I tried out the entire sampling rate but issue us the same. > > I am using montavista linux kernel 2.6.10. > > I want to try out with latest kernel so please help me to find out the > latest montavista kernel and the location to download?
The latest MV 2.6.10 kernel is available on support.mvista.com. Do a search for dm6467. If you don't have a subscription on support.mvista.com. You may be able to get a copy from TI. Ask for LSP1.3. Regards, Steve > > > > > > Regards, > > Santosh > > > > > ______________________________________________________________________ > From: Mohamed AbdElwahed [mailto:[email protected]] > Sent: Monday, June 15, 2009 11:53 AM > To: Santosh Singh > Cc: Davinci Mailing list > Subject: RE: Need help for missing sound after some time in /dev/dsp > > > > > hi all, > i faced similar problem before, and i work around by forcing the > player to play fixed sample rate. or to convert the media file to > certain sample rate. by expermind i found that you can play 44100, > 48000, 32000 for any period of time without any sound drop, try this > and kindly inform me if still you have the problem. > -------------------------------------- > > Mohamed AbdElwahed Ibrahim > > > > > > > > > > From: [email protected] > > To: [email protected] > > Date: Mon, 15 Jun 2009 09:45:26 +0530 > > CC: [email protected] > > Subject: RE: Need help for missing sound after some time in /dev/dsp > > > > > > > > -----Original Message----- > > From: Steve Chen [mailto:[email protected]] > > Sent: Thursday, June 11, 2009 10:21 PM > > To: Santosh Singh > > Cc: [email protected] > > Subject: RE: Need help for missing sound after some time in /dev/dsp > > > > On Thu, 2009-06-11 at 18:32 +0530, Santosh Singh wrote: > > > -----Original Message----- > > > From: Steve Chen [mailto:[email protected]] > > > Sent: Thursday, June 11, 2009 5:57 PM > > > To: Santosh Singh > > > Cc: [email protected] > > > Subject: Re: Need help for missing sound after some time > in /dev/dsp > > > > &g t; > On Thu, 2009-06-11 at 14:17 +0530, Santosh Singh wrote: > > > > Hi All, > > > > > > > > We are writing small application on TI's DM6446 evaluation > board. > > > > > > > > I am facing sound related problem i.e., with /dev/dsp. > > > > > > > > When we are playing some .wav file using na_play ,I could hear > the sound for a longer period without any problem. > > > > > > > > > > > > > > > > But from a C routine when we are executing a shell script using > system call() to play a .wav file continuously for a period of time in > a for loop. > > > > > > > > After some time around 2-5 min sound goes off, but shell script > is still being called by c routine and even after reboot sound doesn't > come up. > > > > > > > > Finally we have to do a hard reset to reboot the system to > correct this sound problem. > > > > > > > > ; > > > > > > > > I don't find any error messages in dmesg. > > > > > > > > Even command fuser -v /dev/dsp shows only my application name. > > > > > > > > Sample code: > > > > > > > > C routine: > > > > > > > > > > > > > > > > for (int i=0; i< 1000; i++ ) > > > > > > > > system ("./na_play tem.wav"); > > > > > > > > na_play is the player in current directory and > > > > > > > > tem.wav is the .wav file to play. > > > > > > > > Please help to find out actual problem and solution if possible. > > > > > > > > > > > > Regards, > > > > > > > > Santosh > > > > > > > > > > A few qustions > > > > > > 1. Which kernel are you using. > > > 2. Can you reproduce the problem playing a long sound file? > > > > > > I recall reading a bug report sometime ago that start/stop audio > > > repeatedly can cause audio to stop working which is what you are > doing. > > > > > > Regards, > > > Steve > > > > > > > > > Hi Steve, > > > Thanks for your response. > > > 1. Kernel version is 2.6.10 montavista-linux > > > 2. We are not able to reproduce the problem with long file, only > with short file when playing one after the other. i.e. when I try to > run a sample file as mentioned in my previous mail in a loop I find > that the sound goes off after few minutes. > > > When I do a soft reboot with "reboot" command and try to play > any .wav file I don't get any sound. I need to do hard reboot to fix > this issue. > > > > I'm not too familiar with 2.6.10 sound as it has the old OSS instead > of > > ALSA found in later kernels. You may want to consider using a later > > kernel - either TI L SP2.0/MVL Pro 5.0 or the DaVinci GIT tree. > > > > If for some reasons, you are unable to move to newer kernel. Make > sure > > you have all the latest updates. There was a substantial rewrite of > > DaVinci OSS driver during LSP 1.3 where a bunch of issues were > fixed. > > > > Regards, > > > > Steve > > > > > > Hi Steve, > > Thanks for your response. > > As you suggested to use the latest kernel rather than using 2.6.10 > for /dev/dsp sound missing problem when I do multiple time start and > stop sound. > > > > Can I get some other solution may be some patch available > for /dev/dsp kernel 2.6.10 or some modification in sound code so that > I can build kernel here to fix the above issue? > > > > Thanks in advance. > > > > Regards, > > Santosh > > > > > > > > http://www.mindtree.com/email/disclaimer.html > > > > _______________________________________________ > > Davi nci-linux-open-source mailing list > > [email protected] > > > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source > > > ______________________________________________________________________ > Invite your mail contacts to join your friends list with Windows Live > Spaces. 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