Should iio_channel_convert take a destination data length?

[jamesoncollins]

https://github.com/analogdevicesinc/libiio/blob/main/include/iio/iio.h#L1400

iio_channel_convert assumes its copying iio_channel_get_data_format(chn)->length / 8 bytes from the source buffer to the destination buffer. Is there anythig that says that the format length of a channel has to be 8, 16, 32, or 64 bits? Could it be 24-byts?

If that's the case, and given that this function is called sample-by-sample, then wouldn't it make sense to let this function convert from a native 3-byte format to 4-bytes?

[jamesoncollins]

Alternatively, can it be guaranteed somewhere that length will always be 8,16,32,64 while bits can be any value?