[gst-devel] simultaneous OSS playback/record

[Edgard Lima]

I think 1. is good (may be better)

...if it is no possible

You could do 2. - Create a new property named "device-fd" (file 
descriptor of an open device) so you could open your device out of 
Gstremaer and then set this property in both osssrc and osssink.

Thomas, what do you think?

[]s
Edgard



ext Wilson, Diego wrote:

>Thomas,
>
>Here's my problem. I am very aware my OSS driver does not allow two
>opens. What's more I even know the person who wrote this OSS driver. And
>I contacted him regarding the "full duplex" issue. 
>
>The driver writer (say that three times fast) is arguing you should not
>open a /dev/dsp device twice using OSS to begin with. And the "Open
>Sound System Programmer's Guide" supports his argument. The guide says
>you should open the device once, turn on a full duplex mode and then
>read and write like there was no tomorrow. The guide *is* the golden
>standard for OSS Audio isn't it? Cuz maybe I'm looking in the wrong
>place.
>
>Now IMHO there's only two possible solutions to my problem:
>
>1. Convince the writer of the OSS driver that you *should* be able to
>open the /dev/dsp device twice.
>2. Find a way of doing OSS full duplex in GStreamer by opening the
>/dev/dsp device once.
>
>For now, I'm making a plea to the GStreamer gods for an answer. C'mon, I
>know your watching.
>
>Regards,
>
>___________________
>Diego Wilson
>
>-----Original Message-----
>From: Thomas Vander Stichele [mailto:thomas at apestaart.org] 
>Sent: Wednesday, June 14, 2006 4:11 AM
>To: Wilson, Diego
>Cc: Edgard Lima; gstreamer-devel at lists.sourceforge.net
>Subject: Re: [gst-devel] simultaneous OSS playback/record
>
>On Tue, 2006-06-13 at 13:20 -0500, Wilson, Diego wrote:
>  
>
>>Edgard,
>>
>>None of them work. I'm getting the following error on all of them:
>>
>>ERROR: from element /pipeline0/osssrc0: Unable to open device /dev/dsp
>>for recording: Device or resource busy
>>    
>>
>
>Well, then your oss driver really *does not* allow two opens, even from
>the same process.
>
>I have the same for my ac97 intel sound card.  alsasrc ! alsasink works
>fine on it, so it's not the hardware's fault.
>
>Thomas
>
>
>
>
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>