At Thu, 20 Feb 2014 11:28:48 +0900, Takashi Sakamoto wrote:
Hi David, (My message was not delivered by ALSA's mailman...)
Because you posted from an address that isn't subscribed. It takes time until manually approved.
Again all,
I have two questions about the usage of this macro.
Should I use this macro for new drivers which I'm working for?'
http://mailman.alsa-project.org/pipermail/alsa-devel/2014-January/071820.htm...
My drivers support some firewire devices, which is desinged for studio-use and have many channels. Its combination of channels are not designed for surround sound like 5.1ch.
Just judging from its name, 'SNDRV_PCM_CLASS_MULTI', I should use this. But there are no drivers which use this macro in current tree, against my expectation that some drivers (ICE1712-pro, RME9652, 6fire usb and so on) should use this macro.
Are there any reasons?
In current tree, there are no drivers which uses this macro.
As long as I investigated in ftp server, this macro is firstly added in ALSA 0.9.0beta1 (2001/02/21). So this macro has been ignored over 10 years...
Right. And the likely reason is that such a differentiation doesn't help much. You can still use your device for driving 5.1 surround :)
So, I rather would like to keep them RIP. Maybe worth to remove it now.
Takashi