NO_TIMESTAMP
pf(NO_TIMESTAMP) /* Don't timestamp packets (default TS) */ \
ret = q6apm_write_async(prtd->graph, prtd->pcm_count, 0, 0, NO_TIMESTAMP);
ret = q6apm_write_async(prtd->graph, prtd->pcm_count, 0, 0, NO_TIMESTAMP);