analog.mq = SR_MQ_SOUND_PRESSURE_LEVEL;
analog.mqflags = devc->mqflags;
analog.unit = SR_UNIT_DECIBEL_SPL;
analog.channels = sdi->channels;
analog.num_samples = buf_len;
analog.data = buf;
analog.mq = SR_MQ_SOUND_PRESSURE_LEVEL;
analog.mqflags = devc->mqflags;
analog.unit = SR_UNIT_DECIBEL_SPL;
analog.channels = sdi->channels;
analog.num_samples = buf_len;
analog.data = buf;