From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lee Revell <rlrevell@joe-job.com>
Subject: Re: Detecting the sample format in the driver
Date: Sun, 19 Mar 2006 19:32:55 -0500
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To: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Cc: alsa-devel@alsa-project.org
List-Id: alsa-devel@alsa-project.org

On Sun, 2006-03-19 at 23:20 +0000, Adrian McMenamin wrote:
> for some reason this isn't working for me - and I need to set hardware
> channel parameters on the basis of the sample.
> 
> My hardware plays signed 8 bit, signed 16 bit little endian and 8 bit
> adaptive differential PCM and I have this set...
> 
> 
> 
> .formats =
> 	    (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |
> 	     SNDRV_PCM_FMTBIT_IMA_ADPCM),
> 
> 
> 
> But when I try to detect the format...
> 
> 	if ((substream->runtime)->format == SNDRV_PCM_FMTBIT_S16_LE)
> 		channel->sfmt = SM_16BIT;
> 
> 
> It doesn't seem to work.
> 
> I am assuming the alsa subsystem ought to process the stream for me - ie
> any 16 bit stream will turn up as SNDRV_PCM_FMTBIT_S16_LE - is that
> right? And if it is, why isn't it working?
> 

What does snd_pcm_format_width(runtime->format) return (check emupcm.c
for examples)?

Lee



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