ftdm_fsk_write_sample_t 286 src/ftdm_callerid.c ftdm_fsk_write_sample_t write_sample_callback, ftdm_fsk_write_sample_t 332 src/include/private/ftdm_core.h ftdm_fsk_write_sample_t write_sample_callback; ftdm_fsk_write_sample_t 514 src/include/private/ftdm_core.h ftdm_fsk_write_sample_t write_sample_callback, ftdm_fsk_write_sample_t 366 src/include/private/ftdm_types.h typedef ftdm_status_t (*ftdm_fsk_write_sample_t)(int16_t *buf, ftdm_size_t buflen, void *user_data);