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[Linrad] Re: Delta 44/66
- Subject: [Linrad] Re: Delta 44/66
- From: Isao SEKI - JM1WBB <gongon.com; iseki@xxxxxxxxxxxxxxxx>
- Date: Thu, 21 May 2009 21:56:40 +0900
Thank you for your information. I went back home from
EME site and have test just now. It works well! I am
sorry late response.
Isao / JM1WBB
On 2009/05/19, at 22:20, Leif Asbrink wrote:
> Hello Isao,
>> I installed Delta 66 (for WSE) and YMF (for AF out) in
>> Linux box and those cards worked fine. But YMF got out
>> of order and I'm installing another Delta 44. When this
>> card is selected for RX, Linrad say:
>> Error: Device must have 1 or 2 channels (or both).
>> What mistake I am? I'm also using OSS sound drivers
>> (paid) on Fedora 10. Thanks in advance.
> I do not have OSS here any more. With the new installation
> procedure I found it difficult to manage reconfigurations
> when testing all the different soundcards.
> The problem is presumably that the device you selected is reported
> by OSS to only be capable of using 4 channels. There is a test
> for this in lsetad.c like this:
> if( (dev_wr_channels[ui.rx_dadev_no]&3) == 0)
> "Error: Device must have 1 or 2 channels (or both).");
> In the routine void set_rx_dadev_parms(int *line)
> which is near line 4130 in lsetad.c
> Remove or comment out those lines. The modern OSS driver
> is probably doing a conversion in software so it will allow
> the device to be opened as one or two channels.
> You must also comment out two of the following lines like this:
> //if( (dev_wr_channels[ui.rx_dadev_no]&1) ==
> //if( (dev_wr_channels[ui.rx_dadev_no]&2) ==
> That should allow Linrad to try to open the Delta44 with one or two
> The reason for this test is that some systems do not work at all
> if one tries to open devices with a number of channels not supported
> in hardware. Maybe it is time to remove this restriction now because
> the problem is presumably only present in rather old Linux sound
> To make it work you must also remove this:
> #ifdef SNDCTL_DSP_COOKEDMODE
> ioctl(rx_audio_out, SNDCTL_DSP_COOKEDMODE, &j);
> This is near line 2964 in lsetad.c.
> I have modified Linrad-03.06 like this:
> Error: Device must have 1 or 2 channels (or both).
> Do you wish to try to use it anyway (Y/N)?
> If you answer 'Y', the changes above will come into effect and if
> you ansewr 'N' you will get a chance to select another device.
> I have tested it in my RedHat 9 installation where I have 4Front OSS.
> (Not actually listened to the output because connectors do not fit,
> but it seems to work properly.)
> Leif / SM5BSZ
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