azalia_codec_add_format
void azalia_codec_add_format(codec_t *, int, int, uint32_t, int32_t);
azalia_codec_add_format(this, chan, 8, bits_rates, mode);
azalia_codec_add_format(this, chan, 16, bits_rates, mode);
azalia_codec_add_format(this, chan, 20, bits_rates, mode);
azalia_codec_add_format(this, chan, 24, bits_rates, mode);
azalia_codec_add_format(this, chan, 32, bits_rates, mode);