AICA_PERIOD_SIZE
.period_bytes_min = AICA_PERIOD_SIZE,
.period_bytes_max = AICA_PERIOD_SIZE,
AICA_PERIOD_SIZE *
AICA_PERIOD_SIZE * period_offset,
buffer_size / (AICA_PERIOD_SIZE * runtime->channels);
AICA_PERIOD_SIZE * runtime->channels,
AICA_PERIOD_SIZE;