[alsa-devel] (no subject)

Clemens Ladisch clemens at ladisch.de
Thu Jan 30 15:58:37 CET 2020


Ben Dooks wrote:
> On 30/01/2020 09:31, Clemens Ladisch wrote:
>> S24_LE:  24-bit samples in 32-bit words, aligned to the LSB
>> S32_LE:  24-bit samples in 32-bit words, aligned to the MSB
>>
>> It is very unlikely that your hardware implements S24_LE.
>
> Which is wrong, since this is exactly what the hardware implements.
>
> The DMA fetches 32 bit words, and then the front end dispatches only
> 24 bits of these to the I2S/TDM

Which 24 bits?  Is the padding in the first byte (S32_LE) or in the
last byte (S24_LE)?


Regards,
Clemens


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