From: Takashi Iwai <tiwai@suse.de>
To: Giuliano Pochini <pochini@shiny.it>
Cc: alsa-devel <alsa-devel@lists.sourceforge.net>
Subject: Re: trigger commands
Date: Mon, 24 Mar 2003 10:55:07 +0100 [thread overview]
Message-ID: <s5hwuipozr8.wl@alsa2.suse.de> (raw)
In-Reply-To: <1048444275.2315.4.camel@Jay>
At 23 Mar 2003 18:31:04 +0000,
Giuliano Pochini wrote:
>
> What are PUSH, RELEASE, SUSPEND, RESUME trigger commands supposed to do
> ?
* pcm stream pausing
imagine the pause-button is pushed and released.
these commands are issued only when SNDRV_PCM_INFO_PAUSE is set to
info field of snd_pcm_hardware_t.
- PAUSE_PUSH
pause the stream
- PAUSE_RELEASE
restart the paused stream
* power-management
called when the power-management status is changed.
these commands are issued only when SNDRV_PCM_INFO_RESUME is set to
info field of snd_pcm_hardware_t (and of course pm is supported).
- SUSPEND
suspend the streams; usually identical with STOP command
- RESUME
resume the streams; usually identical with START command
Takashi
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next prev parent reply other threads:[~2003-03-24 9:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-23 18:31 trigger commands Giuliano Pochini
2003-03-24 9:55 ` Takashi Iwai [this message]
2003-03-24 10:48 ` Giuliano Pochini
2003-03-24 11:00 ` Takashi Iwai
2003-03-24 16:10 ` Giuliano Pochini
2003-03-25 17:24 ` pcm interfaces questions Giuliano Pochini
2003-03-25 17:51 ` Paul Davis
2003-03-26 9:32 ` Takashi Iwai
2003-03-26 14:18 ` Giuliano Pochini
2003-03-26 15:48 ` Paul Davis
2003-03-26 20:32 ` Jaroslav Kysela
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