ioctl FE_GET_INFO &manvol; FE_GET_INFO Query DVB frontend capabilities and returns information about the front-end. This call only requires read-only access to the device int ioctl int fd int request struct dvb_frontend_info *argp fd &fe_fd; request FE_GET_INFO argp pointer to struct &dvb-frontend-info; All DVB frontend devices support the FE_GET_INFO ioctl. It is used to identify kernel devices compatible with this specification and to obtain information about driver and hardware capabilities. The ioctl takes a pointer to dvb_frontend_info which is filled by the driver. When the driver is not compatible with this specification the ioctl returns an error. &return-value-dvb; &cs-str; char name[128] Name of the frontend fe_type_t type DEPRECATED. DVBv3 type. Should not be used on modern programs, as a frontend may have more than one type. So, the DVBv5 API should be used instead to enumerate and select the frontend type. uint32_t frequency_min Minimal frequency supported by the frontend uint32_t frequency_max Maximal frequency supported by the frontend uint32_t frequency_stepsize Frequency step - all frequencies are multiple of this value uint32_t frequency_tolerance Tolerance of the frequency uint32_t symbol_rate_min Minimal symbol rate (for Cable/Satellite systems), in bauds uint32_t symbol_rate_max Maximal symbol rate (for Cable/Satellite systems), in bauds uint32_t symbol_rate_tolerance Maximal symbol rate tolerance, in ppm uint32_t notifier_delay DEPRECATED. Not used by any driver. &fe-caps; caps Capabilities supported by the frontend NOTE: The frequencies are specified in Hz for Terrestrial and Cable systems. They're specified in kHz for Satellite systems Capabilities describe what a frontend can do. Some capabilities are supported only on some specific frontend types. &cs-def; ID Description FE_IS_STUPID There's something wrong at the frontend, and it can't report its capabilities FE_CAN_INVERSION_AUTO The frontend is capable of auto-detecting inversion FE_CAN_FEC_1_2 The frontend supports FEC 1/2 FE_CAN_FEC_2_3 The frontend supports FEC 2/3 FE_CAN_FEC_3_4 The frontend supports FEC 3/4 FE_CAN_FEC_4_5 The frontend supports FEC 4/5 FE_CAN_FEC_5_6 The frontend supports FEC 5/6 FE_CAN_FEC_6_7 The frontend supports FEC 6/7 FE_CAN_FEC_7_8 The frontend supports FEC 7/8 FE_CAN_FEC_8_9 The frontend supports FEC 8/9 FE_CAN_FEC_AUTO The frontend can autodetect FEC. FE_CAN_QPSK The frontend supports QPSK modulation FE_CAN_QAM_16 The frontend supports 16-QAM modulation FE_CAN_QAM_32 The frontend supports 32-QAM modulation FE_CAN_QAM_64 The frontend supports 64-QAM modulation FE_CAN_QAM_128 The frontend supports 128-QAM modulation FE_CAN_QAM_256 The frontend supports 256-QAM modulation FE_CAN_QAM_AUTO The frontend can autodetect modulation FE_CAN_TRANSMISSION_MODE_AUTO The frontend can autodetect the transmission mode FE_CAN_BANDWIDTH_AUTO The frontend can autodetect the bandwidth FE_CAN_GUARD_INTERVAL_AUTO The frontend can autodetect the guard interval FE_CAN_HIERARCHY_AUTO The frontend can autodetect hierarch FE_CAN_8VSB The frontend supports 8-VSB modulation FE_CAN_16VSB The frontend supports 16-VSB modulation FE_HAS_EXTENDED_CAPS Currently, unused FE_CAN_MULTISTREAM The frontend supports multistream filtering FE_CAN_TURBO_FEC The frontend supports turbo FEC modulation FE_CAN_2G_MODULATION The frontend supports "2nd generation modulation" (DVB-S2/T2)> FE_NEEDS_BENDING Not supported anymore, don't use it FE_CAN_RECOVER The frontend can recover from a cable unplug automatically FE_CAN_MUTE_TS The frontend can stop spurious TS data output