Re: [alsa-devel] How to Configure Appropriate runtime->hw in ALSA Driver

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