[alsa-devel] [PATCH] crec: Add option to specify codec ID

[Richard Fitzgerald]

On Wed, 2016-11-16 at 13:48 +0000, Charles Keepax wrote:
> On Wed, Nov 16, 2016 at 01:07:55PM +0000, Richard Fitzgerald wrote:
> > On Wed, 2016-11-16 at 18:35 +0530, Vinod Koul wrote:
> > > On Wed, Nov 16, 2016 at 11:44:09AM +0000, Richard Fitzgerald wrote:
> > > > This patch adds a -I command line option to set the codec ID,
> > > > either from a defined set of string values or as a number.
> > > 
> > > Can you explain why you want to add this? The utility cant really record a
> > > mp3 file!
> > > 
> > > 
> > 
> > You need to be able to pass a codec ID that the driver supports, and to
> > indicate which codec you're trying to use. It's not useful to only be
> > able to open the "PCM" codec. It doesn't really matter whether crec
> > understands the content of the data, we're just pulling raw data, most
> > likely for test/debug.
> > 
> > The wm_adsp driver on Wolfson/Cirrus codecs uses the new BESPOKE stream
> > ID so we need a way to pass that. And we'd also need it for any drivers
> > that had streams using other codec IDs.
> > 
> 
> Is the objection here not that crec is wrapping the data with
> a WAV file? Should we perhaps just expand this so that if you
> request a different format it uses the raw data mode that it uses
> when you let the output go to stdout.
> 

Funny I thought we'd already added a flag for saving to the file raw.
It's raw when you pipe it to stdout.


> Thanks,
> Charles