From: Clemens Ladisch <clemens@ladisch.de>
To: Jose B <jose.cuerv0@yahoo.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: snd_seq_system_info_get_cur_ports function
Date: Mon, 29 Jul 2013 21:52:49 +0200 [thread overview]
Message-ID: <51F6C811.4070501@ladisch.de> (raw)
In-Reply-To: <51F4A6C0.1060505@yahoo.com>
Jose B wrote:
> Shouldnt there be a function for getting the current port count as seen below?
>
> snd_seq_system_info_get_cur_ports(const snd_seq_system_info_t *info)
There is no such value:
<https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/include/uapi/sound/asequencer.h#n308>
> I was writing a function to quickly check if any new ports were registered
> on the sequencer after the application using the wrapper starts up.
The number of ports is not helpful for detecting all changes.
Subscribe to port 0:1 (SND_SEQ_CLIENT_SYSTEM:SND_SEQ_PORT_SYSTEM_ANNOUNCE) to
receive events for any changes.
Regards,
Clemens
prev parent reply other threads:[~2013-07-29 19:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-28 5:06 snd_seq_system_info_get_cur_ports function Jose B
2013-07-29 19:52 ` Clemens Ladisch [this message]
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