From mboxrd@z Thu Jan  1 00:00:00 1970
From: Takashi Iwai <tiwai@suse.de>
Subject: Re: IO plugin and multiple poll descriptors
Date: Wed, 18 May 2005 15:21:45 +0200
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To: Marcel Holtmann <marcel@holtmann.org>
Cc: ALSA Mailing List <alsa-devel@lists.sourceforge.net>
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At Wed, 18 May 2005 14:56:43 +0200,
Marcel Holtmann wrote:
> 
> > > What happens at the moment when I really return two poll_fd.
> 
> What about this one?

The poll_descriptors_count and poll_descriptors should return 2,
for example,

int my_poll_descriptors_count(snd_pcm_ioplug_t *io)
{
	return 2;
}

int my_poll_descriptors(snd_pcm_ioplug_t *io, struct pollfd *pfds,
	unsigned int space)
{
	if (space < 2) {
		error("Too little pfd\n");
		return 0;
	}
	pfds[0].fd = fd0;
	pfds[0].events = POLLOUT | POLLERR | POLLNVAL
	pfds[1].fd = fd1;
	pfds[0].events = POLLIN | POLLERR | POLLNVAL
	return 2;
}


Takashi


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