[alsa-devel] (no subject)

[Ben Dooks]

On 2020-01-30 14:58, Clemens Ladisch wrote:
> 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)?

I think the low 24 bits are sent from the 32 bit word.