samples_to_bytes
off = samples_to_bytes(runtime, off);
frames = samples_to_bytes(runtime, frames);
hwoff = samples_to_bytes(runtime, hwoff);
v_iter->sample_bytes = samples_to_bytes(runtime, 1);
unsigned int sample_size = samples_to_bytes(runtime, 1);
periodbytes = samples_to_bytes(substream->runtime, period_size);
samples_to_bytes(runtime, io->buff_sample_pos);
io->sample_width = samples_to_bytes(runtime, 1);
samples_to_bytes(runtime, 1);
runtime->channels * samples_to_bytes(runtime, 1);
runtime->channels * samples_to_bytes(runtime, 1);
runtime->channels * samples_to_bytes(runtime, 1);
runtime->channels * samples_to_bytes(runtime, 1);