[gst-devel] simultaneous OSS playback/record

[Edgard Lima]

Hi,

yes, cool.
But I have to ask wtay and thomasvs before comit it.

BR,
Edgard



ext Wilson, Diego wrote:

>Edgard,
>
>Number 1 (getting a /dev/dsp device which can be opened twice) is
>looking unlikely.
>
>Your suggestion of creating a device-fd seems reasonable. I'll keep you
>posted on the progress if you're interested.
>
>Regards,
>
>_________________________
>Diego Wilson
>
>-----Original Message-----
>From: Edgard Lima [mailto:edgard.lima at indt.org.br] 
>Sent: Wednesday, June 14, 2006 3:34 PM
>To: Wilson, Diego
>Cc: Thomas Vander Stichele; gstreamer-devel at lists.sourceforge.net
>Subject: Re: [gst-devel] simultaneous OSS playback/record
>
>
>
>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
>>
>>
>>
>>
>>_______________________________________________
>>gstreamer-devel mailing list
>>gstreamer-devel at lists.sourceforge.net
>>https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>> 
>>
>>    
>>
>
>  
>