From: Clemens Ladisch <clemens@ladisch.de>
To: Azizul Hakim <azizulfahim2002@gmail.com>, alsa-devel@alsa-project.org
Subject: Re: How to Configure Appropriate runtime->hw in ALSA Driver
Date: Sun, 05 Jul 2015 19:20:04 +0200 [thread overview]
Message-ID: <55996744.7040201@ladisch.de> (raw)
In-Reply-To: <CA+k7WwaxTObWDjn-7SqPkzTNNgf9+ManyT3mk8wDxLZZzn5OYQ@mail.gmail.com>
Azizul Hakim wrote:
> What is the best way to set the *runtime->hw* parameter in ALSA driver.
Set it to the capabilities of your hardware.
> From sample ALSA driver tutorial I understand we have to declare a
> *structure snd_pcm_hardware* where we define all sound parameters
> like *STEREO/MONO,
> RATES* etc. Now at run time we can play sound files of different
> parameters. How ALSA behaves if the audio file parameters doesn't match
> with the *structure_snd_pcm_hardware* parameters?
Applications are not able to set unsupported parameter values.
However, alsa-lib can automatically convert rates/formats.
> If we want our driver to play any sound file
Your driver is supposed to driver your hardware.
What would you do with an unsupported format?
Regards,
Clemens
prev parent reply other threads:[~2015-07-05 17:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-05 6:42 How to Configure Appropriate runtime->hw in ALSA Driver Azizul Hakim
2015-07-05 17:20 ` Clemens Ladisch [this message]
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