[alsa-devel] RFC: support for 12 & 24Khz

[Vinod Koul]

On Thu, Jul 25, 2013 at 08:45:15AM +0200, David Henningsson wrote:
> On 07/24/2013 07:26 PM, Vinod Koul wrote:
> >Hey Takashi,
> >
> >For compressed audio we also need to support the PCM rates of 12 and 24KHz.
> >
> >Looking at pcm.h these are not defined so we can simply add them at the end.
> >But am worried about wider impact of adding these rates.
> >
> >Can you let me know if more is required to be done or below is fine
> >
> >diff --git a/include/sound/pcm.h b/include/sound/pcm.h
> >index 84b10f9..e418d8d 100644
> >--- a/include/sound/pcm.h
> >+++ b/include/sound/pcm.h
> >@@ -126,6 +126,8 @@ struct snd_pcm_ops {
> >  #define SNDRV_PCM_RATE_96000           (1<<10)         /* 96000Hz */
> >  #define SNDRV_PCM_RATE_176400          (1<<11)         /* 176400Hz */
> >  #define SNDRV_PCM_RATE_192000          (1<<12)         /* 192000Hz */
> >+#define SNDRV_PCM_RATE_12000           <1<<13>         /* 12000Hz */
> >+#define SNDRV_PCM_RATE_24000           <1<<14>         /* 24000Hz */
> 
> You probably meant (1<<13), not <1<<13> ?
Yup :)

~Vinod