[pulseaudio-discuss] S24_3LE not support in try_auto of set_format

[David Henningsson]

On 2015-06-21 11:19, Raymond Yau wrote:
>  >
>  >> Do you mean you still cannot force pulseaudio to use 24 bits for
> your creative usb audio ?
>  >>
>  >> Seem try auto format did not include 24bits
>  >
>  > I have 24bit explicitly in pulseaudio config currently:
>  >>>
>  >>> default-sample-format = s24le
>  >
>  > But it still uses 16bit, didn't managed how to force it to use 24bit
>
> static const pa_sample_format_t try_order[] = {
>          PA_SAMPLE_FLOAT32NE,
>          PA_SAMPLE_FLOAT32RE,
>          PA_SAMPLE_S32NE,
>          PA_SAMPLE_S32RE,
>          PA_SAMPLE_S24_32NE,
>          PA_SAMPLE_S24_32RE,
>          PA_SAMPLE_S24NE,
>          PA_SAMPLE_S24RE,
> +      PA_SAMPLE_S24LE,
>          PA_SAMPLE_S16NE,
>          PA_SAMPLE_S16RE,
>          PA_SAMPLE_ALAW,
>          PA_SAMPLE_ULAW,
>          PA_SAMPLE_U8
>      };
>
> Seem missing PA_SAMPLE_S24LE in try_order, not sure any assembley code
> need to be changed

S24LE is the same as S24NE on little-endian archs, and the same as S24RE 
on big-endian archs.

  LE = Little endian
  BE = Big endian
  NE = Native endian
  RE = Reverse endian (i e, the opposite to the native one)


-- 
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic