[alsa-devel] [PATCH] Bugfix: Fix resampling when client and slave both use format float

[Pavel Hofman]

On 24.2.2014 13:13, Maarten Baert wrote:
> On 24/02/14 10:17, Takashi Iwai wrote:
>> Can S32 work instead of S16?  Then we won't lose the accuracy so much.
>> Of course, handling float directly would be the best option.
> The samplerate and speexrate plugins currently take S16 (see
> pcm_src_convert_s16 in alsa-plugins/rate/rate_samplerate.c and
> alsa-plugins/rate/rate_speexrate.c), so just using S32 will not improve
> the accuracy. It would be easy to replace those functions with
> pcm_src_convert_float (both resampler libraries have functions that take
> float directly), but that will break the plugin ABI. Is that acceptable?

Here is my older patch for the convertor, I know it needs a bit of work
before accepting (originally discussed at
http://mailman.alsa-project.org/pipermail/alsa-devel/2011-June/041368.html )

If this project gets done, there is a CPU-efficient libsoxr convertor
plugin in the pipeline too.

Thanks a lot,

Pavel.
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