dvb-fe.h

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/*
 * Copyright (c) 2011-2014 - Mauro Carvalho Chehab
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation version 2.1 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 *
 */
#ifndef _DVB_FE_H
#define _DVB_FE_H
 
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <string.h>
#include "dvb-frontend.h"
#include "dvb-sat.h"
#include "dvb-log.h"
 
#define ARRAY_SIZE(x)   (sizeof(x)/sizeof((x)[0]))
 
#define MAX_DELIVERY_SYSTEMS    20
 
#ifndef _DOXYGEN
/*
 * There are a few aliases for other properties. Those are needed just
 * to avoid breaking apps that depend on the library but shoudn't be used
 * anymore on newer apps.
 */
#define DTV_MAX_STATS                   DTV_NUM_STATS_PROPS
#define DTV_SIGNAL_STRENGTH             DTV_STAT_SIGNAL_STRENGTH
#define DTV_SNR                         DTV_STAT_CNR
#define DTV_UNCORRECTED_BLOCKS          DTV_STAT_ERROR_BLOCK_COUNT
 
#endif
 
struct dvb_v5_fe_parms {
        /* Information visible to the client - don't override those values */
        struct dvb_frontend_info        info;
        uint32_t                        version;
        int                             has_v5_stats;
        fe_delivery_system_t            current_sys;
        int                             num_systems;
        fe_delivery_system_t            systems[MAX_DELIVERY_SYSTEMS];
        int                             legacy_fe;
 
        /* The values below are specified by the library client */
 
        /* Flags from the client to the library */
        int                             abort;
 
        /* Linear Amplifier settings */
        int                             lna;
 
        /* Satellite settings */
        const struct dvb_sat_lnb        *lnb;
        int                             sat_number;
        unsigned                        freq_bpf;
        unsigned                        diseqc_wait;
 
        /* Function to write DVB logs */
        unsigned                        verbose;
        dvb_logfunc                     logfunc;
 
        /* Charsets to be used by the conversion utilities */
        char                            *default_charset;
        char                            *output_charset;
};
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct dvb_v5_fe_parms *dvb_fe_dummy(void);
 
struct dvb_v5_fe_parms *dvb_fe_open_flags(int adapter, int frontend,
                                          unsigned verbose,
                                          unsigned use_legacy_call,
                                          dvb_logfunc logfunc,
                                          int flags);
 
struct dvb_v5_fe_parms *dvb_fe_open(int adapter, int frontend,
                                                  unsigned verbose,
                                                  unsigned use_legacy_call);
 
struct dvb_v5_fe_parms *dvb_fe_open2(int adapter, int frontend,
                                    unsigned verbose, unsigned use_legacy_call,
                                    dvb_logfunc logfunc);
 
void dvb_fe_close(struct dvb_v5_fe_parms *parms);
 
const char *dvb_cmd_name(int cmd);
 
const char *const *dvb_attr_names(int cmd);
 
/* Get/set delivery system parameters */
 
int dvb_fe_retrieve_parm(const struct dvb_v5_fe_parms *parms,
                        unsigned cmd, uint32_t *value);
 
int dvb_fe_store_parm(struct dvb_v5_fe_parms *parms,
                      unsigned cmd, uint32_t value);
 
int dvb_set_sys(struct dvb_v5_fe_parms *parms,
                   fe_delivery_system_t sys);
 
int dvb_add_parms_for_sys(struct dvb_v5_fe_parms *parms,
                          fe_delivery_system_t sys);
 
int dvb_set_compat_delivery_system(struct dvb_v5_fe_parms *parms,
                                   uint32_t desired_system);
 
void dvb_fe_prt_parms(const struct dvb_v5_fe_parms *parms);
 
int dvb_fe_set_parms(struct dvb_v5_fe_parms *parms);
 
int dvb_fe_get_parms(struct dvb_v5_fe_parms *parms);
 
/*
 * statistics functions
 */
 
struct dtv_stats *dvb_fe_retrieve_stats_layer(struct dvb_v5_fe_parms *parms,
                                              unsigned cmd, unsigned layer);
 
int dvb_fe_retrieve_stats(struct dvb_v5_fe_parms *parms,
                          unsigned cmd, uint32_t *value);
 
int dvb_fe_get_stats(struct dvb_v5_fe_parms *parms);
 
float dvb_fe_retrieve_ber(struct dvb_v5_fe_parms *parms, unsigned layer,
                          enum fecap_scale_params *scale);
 
float dvb_fe_retrieve_per(struct dvb_v5_fe_parms *parms, unsigned layer);
 
 
enum dvb_quality dvb_fe_retrieve_quality(struct dvb_v5_fe_parms *parms,
                                         unsigned layer);
 
int dvb_fe_snprintf_eng(char *buf, int len, float val);
 
 
 int dvb_fe_snprintf_stat(struct dvb_v5_fe_parms *parms, uint32_t cmd,
                          char *display_name, int layer,
                          char **buf, int *len, int *show_layer_name);
 
int dvb_fe_get_event(struct dvb_v5_fe_parms *parms);
 
/*
 * Other functions, associated to SEC/LNB/DISEqC
 *
 * The functions below are just wrappers for the Kernel calls, in order to
 * manually control satellite systems.
 *
 * Instead of using most them, the best is to set the LNBf parameters, and let
 * the libdvbv5 to automatically handle the calls.
 *
 * NOTE: It currently lacks support for two ioctl's:
 * FE_DISEQC_RESET_OVERLOAD     used only on av7110.
 * Spec says:
 *   If the bus has been automatically powered off due to power overload,
 *   this ioctl call restores the power to the bus. The call requires read/write
 *   access to the device. This call has no effect if the device is manually
 *   powered off. Not all DVB adapters support this ioctl.
 *
 * FE_DISHNETWORK_SEND_LEGACY_CMD is used on av7110, budget, gp8psk and stv0299
 * Spec says:
 *   WARNING: This is a very obscure legacy command, used only at stv0299
 *   driver. Should not be used on newer drivers.
 *   It provides a non-standard method for selecting Diseqc voltage on the
 *   frontend, for Dish Network legacy switches.
 *   As support for this ioctl were added in 2004, this means that such dishes
 *   were already legacy in 2004.
 *
 * So, it doesn't make much sense on implementing support for them.
 */
 
int dvb_fe_sec_voltage(struct dvb_v5_fe_parms *parms, int on, int v18);
 
int dvb_fe_sec_tone(struct dvb_v5_fe_parms *parms, fe_sec_tone_mode_t tone);
 
int dvb_fe_lnb_high_voltage(struct dvb_v5_fe_parms *parms, int on);
 
int dvb_fe_diseqc_burst(struct dvb_v5_fe_parms *parms, int mini_b);
 
int dvb_fe_diseqc_cmd(struct dvb_v5_fe_parms *parms, const unsigned len,
                      const unsigned char *buf);
 
int dvb_fe_diseqc_reply(struct dvb_v5_fe_parms *parms, unsigned *len, char *buf,
                       int timeout);
 
int dvb_fe_is_satellite(uint32_t delivery_system);
 
int dvb_fe_set_default_country(struct dvb_v5_fe_parms *parms,
                               const char *country);
 
#ifdef __cplusplus
}
#endif
 
/*
 * Arrays from dvb-v5.h
 *
 * Those arrays can be used to translate from a DVB property into a name.
 *
 * No need to directly access them from userspace, as dvb_attr_names()
 * already handles them into a more standard way.
 */
 
#ifndef _DOXYGEN
 
extern const unsigned fe_bandwidth_name[8];
extern const char *dvb_v5_name[72];
extern const void *dvb_v5_attr_names[];
extern const char *delivery_system_name[21];
extern const char *fe_code_rate_name[34];
extern const char *fe_modulation_name[22];
extern const char *fe_transmission_mode_name[10];
extern const unsigned fe_bandwidth_name[8];
extern const char *fe_guard_interval_name[13];
extern const char *fe_hierarchy_name[6];
extern const char *fe_voltage_name[4];
extern const char *fe_tone_name[3];
extern const char *fe_inversion_name[4];
extern const char *fe_pilot_name[4];
extern const char *fe_rolloff_name[8];
 
#endif
 
#endif