Matt Flax wrote: > On 04/11/16 22:31, Clemens Ladisch wrote: >> Matt Flax wrote: >>> I have a sample rate converter IC, which is followed by a DAC. This kind of setup : >>> >>> SoC chip -> Sample rate conv. chip -> DAC chip >> >> What is the purpose of the converter? What problem does it solve? > > It has a lower noise floor then libsamplerate. Which chip is better than 145 dB? >>> How do you construct a machine driver for this setup ? >> >> The original DAC driver will not work correctly, as far as sample rate >> settings are concerned. > > Yes, I was expecting that. Tell me, even in the current ALSA version, is there > any support for sample rate converter hardware chains ? No. >> Well, if your goal isn't a proper driver for upstream, just hack the >> existing DAC driver to access the other I²C device, when needed. >> > Sure, I can do this. I can't find any examples on operating a codec within > a codec. Would I export all function symbols and do it that way ? Export to where? You would just modify the existing DAC driver. Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
