// Part of dump1090, a Mode S message decoder for RTLSDR devices. // // dump1090.h: main program header // // Copyright (c) 2014,2015 Oliver Jowett // // This file is free software: you may copy, redistribute and/or modify it // under the terms of the GNU General Public License as published by the // Free Software Foundation, either version 2 of the License, or (at your // option) any later version. // // This file 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 // General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program. If not, see . // This file incorporates work covered by the following copyright and // permission notice: // // Copyright (C) 2012 by Salvatore Sanfilippo // // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // // * Redistributions in binary form must reproduce the above copyright // notice, this list of conditions and the following disclaimer in the // documentation and/or other materials provided with the distribution. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #ifndef __DUMP1090_H #define __DUMP1090_H // Default version number, if not overriden by the Makefile #ifndef MODES_DUMP1090_VERSION # define MODES_DUMP1090_VERSION "v1.13-custom" #endif #ifndef MODES_DUMP1090_VARIANT # define MODES_DUMP1090_VARIANT "dump1090-mutability" #endif // ============================= Include files ========================== #ifndef _WIN32 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #else #include "winstubs.h" //Put everything Windows specific in here #endif #include // ============================= #defines =============================== #define MODES_DEFAULT_PPM 52 #define MODES_DEFAULT_RATE 2000000 #define MODES_OVERSAMPLE_RATE 2400000 #define MODES_DEFAULT_FREQ 1090000000 #define MODES_DEFAULT_WIDTH 1000 #define MODES_DEFAULT_HEIGHT 700 #define MODES_RTL_BUFFERS 15 // Number of RTL buffers #define MODES_RTL_BUF_SIZE (16*16384) // 256k #define MODES_MAG_BUF_SAMPLES (MODES_RTL_BUF_SIZE / 2) // Each sample is 2 bytes #define MODES_MAG_BUFFERS 12 // Number of magnitude buffers (should be smaller than RTL_BUFFERS for flowcontrol to work) #define MODES_AUTO_GAIN -100 // Use automatic gain #define MODES_MAX_GAIN 999999 // Use max available gain #define MODES_MSG_SQUELCH_DB 4.0 // Minimum SNR, in dB #define MODES_MSG_ENCODER_ERRS 3 // Maximum number of encoding errors #define MODES_MAX_PHASE_STATS 10 #define MODEAC_MSG_SAMPLES (25 * 2) // include up to the SPI bit #define MODEAC_MSG_BYTES 2 #define MODEAC_MSG_SQUELCH_LEVEL 0x07FF // Average signal strength limit #define MODEAC_MSG_FLAG (1<<0) #define MODEAC_MSG_MODES_HIT (1<<1) #define MODEAC_MSG_MODEA_HIT (1<<2) #define MODEAC_MSG_MODEC_HIT (1<<3) #define MODEAC_MSG_MODEA_ONLY (1<<4) #define MODEAC_MSG_MODEC_OLD (1<<5) #define MODES_PREAMBLE_US 8 // microseconds = bits #define MODES_PREAMBLE_SAMPLES (MODES_PREAMBLE_US * 2) #define MODES_PREAMBLE_SIZE (MODES_PREAMBLE_SAMPLES * sizeof(uint16_t)) #define MODES_LONG_MSG_BYTES 14 #define MODES_SHORT_MSG_BYTES 7 #define MODES_LONG_MSG_BITS (MODES_LONG_MSG_BYTES * 8) #define MODES_SHORT_MSG_BITS (MODES_SHORT_MSG_BYTES * 8) #define MODES_LONG_MSG_SAMPLES (MODES_LONG_MSG_BITS * 2) #define MODES_SHORT_MSG_SAMPLES (MODES_SHORT_MSG_BITS * 2) #define MODES_LONG_MSG_SIZE (MODES_LONG_MSG_SAMPLES * sizeof(uint16_t)) #define MODES_SHORT_MSG_SIZE (MODES_SHORT_MSG_SAMPLES * sizeof(uint16_t)) #define MODES_OS_PREAMBLE_SAMPLES (20) #define MODES_OS_PREAMBLE_SIZE (MODES_OS_PREAMBLE_SAMPLES * sizeof(uint16_t)) #define MODES_OS_LONG_MSG_SAMPLES (268) #define MODES_OS_SHORT_MSG_SAMPLES (135) #define MODES_OS_LONG_MSG_SIZE (MODES_LONG_MSG_SAMPLES * sizeof(uint16_t)) #define MODES_OS_SHORT_MSG_SIZE (MODES_SHORT_MSG_SAMPLES * sizeof(uint16_t)) #define MODES_OUT_BUF_SIZE (1500) #define MODES_OUT_FLUSH_SIZE (MODES_OUT_BUF_SIZE - 256) #define MODES_OUT_FLUSH_INTERVAL (60000) #define MODES_UNIT_FEET 0 #define MODES_UNIT_METERS 1 #define MODES_USER_LATLON_VALID (1<<0) #define MODES_ACFLAGS_LATLON_VALID (1<<0) // Aircraft Lat/Lon is decoded #define MODES_ACFLAGS_ALTITUDE_VALID (1<<1) // Aircraft altitude is known #define MODES_ACFLAGS_HEADING_VALID (1<<2) // Aircraft heading is known #define MODES_ACFLAGS_SPEED_VALID (1<<3) // Aircraft speed is known #define MODES_ACFLAGS_VERTRATE_VALID (1<<4) // Aircraft vertical rate is known #define MODES_ACFLAGS_SQUAWK_VALID (1<<5) // Aircraft Mode A Squawk is known #define MODES_ACFLAGS_CALLSIGN_VALID (1<<6) // Aircraft Callsign Identity #define MODES_ACFLAGS_EWSPEED_VALID (1<<7) // Aircraft East West Speed is known #define MODES_ACFLAGS_NSSPEED_VALID (1<<8) // Aircraft North South Speed is known #define MODES_ACFLAGS_AOG (1<<9) // Aircraft is On the Ground #define MODES_ACFLAGS_LLEVEN_VALID (1<<10) // Aircraft Even Lot/Lon is known #define MODES_ACFLAGS_LLODD_VALID (1<<11) // Aircraft Odd Lot/Lon is known #define MODES_ACFLAGS_AOG_VALID (1<<12) // MODES_ACFLAGS_AOG is valid #define MODES_ACFLAGS_FS_VALID (1<<13) // Aircraft Flight Status is known #define MODES_ACFLAGS_NSEWSPD_VALID (1<<14) // Aircraft EW and NS Speed is known #define MODES_ACFLAGS_LATLON_REL_OK (1<<15) // Indicates it's OK to do a relative CPR #define MODES_ACFLAGS_REL_CPR_USED (1<<16) // Lat/lon derived from relative CPR #define MODES_ACFLAGS_CATEGORY_VALID (1<<17) // Aircraft category is known #define MODES_ACFLAGS_LLEITHER_VALID (MODES_ACFLAGS_LLEVEN_VALID | MODES_ACFLAGS_LLODD_VALID) #define MODES_ACFLAGS_LLBOTH_VALID (MODES_ACFLAGS_LLEVEN_VALID | MODES_ACFLAGS_LLODD_VALID) #define MODES_ACFLAGS_AOG_GROUND (MODES_ACFLAGS_AOG_VALID | MODES_ACFLAGS_AOG) #define MODES_NON_ICAO_ADDRESS (1<<24) // Set on addresses to indicate they are not ICAO addresses #define MODES_DEBUG_DEMOD (1<<0) #define MODES_DEBUG_DEMODERR (1<<1) #define MODES_DEBUG_BADCRC (1<<2) #define MODES_DEBUG_GOODCRC (1<<3) #define MODES_DEBUG_NOPREAMBLE (1<<4) #define MODES_DEBUG_NET (1<<5) #define MODES_DEBUG_JS (1<<6) // When debug is set to MODES_DEBUG_NOPREAMBLE, the first sample must be // at least greater than a given level for us to dump the signal. #define MODES_DEBUG_NOPREAMBLE_LEVEL 25 #define MODES_INTERACTIVE_REFRESH_TIME 250 // Milliseconds #define MODES_INTERACTIVE_ROWS 22 // Rows on screen #define MODES_INTERACTIVE_DISPLAY_TTL 60000 // Delete from display after 60 seconds #define MODES_NET_HEARTBEAT_INTERVAL 60000 // milliseconds #define MODES_NET_SERVICES_NUM 7 #define MODES_NET_INPUT_RAW_PORT 30001 #define MODES_NET_OUTPUT_RAW_PORT 30002 #define MODES_NET_OUTPUT_SBS_PORT 30003 #define MODES_NET_INPUT_BEAST_PORT 30004 #define MODES_NET_OUTPUT_BEAST_PORT 30005 #define MODES_NET_HTTP_PORT 8080 #define MODES_NET_OUTPUT_FA_TSV_PORT 10001 #define MODES_CLIENT_BUF_SIZE 1024 #define MODES_NET_SNDBUF_SIZE (1024*64) #define MODES_NET_SNDBUF_MAX (7) #ifndef HTMLPATH #define HTMLPATH "./public_html" // default path for gmap.html etc #endif #define HISTORY_SIZE 120 #define HISTORY_INTERVAL 30000 #define MODES_NOTUSED(V) ((void) V) #define MAX_AMPLITUDE 65535.0 #define MAX_POWER (MAX_AMPLITUDE * MAX_AMPLITUDE) // Include subheaders after all the #defines are in place #include "util.h" #include "anet.h" #include "crc.h" #include "demod_2000.h" #include "demod_2400.h" #include "stats.h" #include "cpr.h" #include "icao_filter.h" #include "convert.h" //======================== structure declarations ========================= // Structure used to describe a networking client struct client { struct client* next; // Pointer to next client int fd; // File descriptor int service; // TCP port the client is connected to int buflen; // Amount of data on buffer char buf[MODES_CLIENT_BUF_SIZE+1]; // Read buffer }; // Common writer state for all output sockets of one type struct net_writer { int socket; // listening socket FD, used to identify the owning service int connections; // number of active clients void *data; // shared write buffer, sized MODES_OUT_BUF_SIZE int dataUsed; // number of bytes of write buffer currently used uint64_t lastWrite; // time of last write to clients }; // Structure representing one magnitude buffer struct mag_buf { uint16_t *data; // Magnitude data. Starts with Modes.trailing_samples worth of overlap from the previous block unsigned length; // Number of valid samples _after_ overlap. Total buffer length is buf->length + Modes.trailing_samples. uint64_t sampleTimestamp; // Clock timestamp of the start of this block, 12MHz clock struct timespec sysTimestamp; // Estimated system time at start of block uint32_t dropped; // Number of dropped samples preceding this buffer double total_power; // Sum of per-sample input power (in the range [0.0,1.0] per sample), or 0 if not measured }; // Program global state struct { // Internal state pthread_t reader_thread; pthread_mutex_t data_mutex; // Mutex to synchronize buffer access pthread_cond_t data_cond; // Conditional variable associated struct mag_buf mag_buffers[MODES_MAG_BUFFERS]; // Converted magnitude buffers from RTL or file input unsigned first_free_buffer; // Entry in mag_buffers that will next be filled with input. unsigned first_filled_buffer; // Entry in mag_buffers that has valid data and will be demodulated next. If equal to next_free_buffer, there is no unprocessed data. struct timespec reader_cpu_accumulator; // CPU time used by the reader thread, copied out and reset by the main thread under the mutex unsigned trailing_samples; // extra trailing samples in magnitude buffers double sample_rate; // actual sample rate in use (in hz) int fd; // --ifile option file descriptor input_format_t input_format; // --iformat option uint16_t *maglut; // I/Q -> Magnitude lookup table uint16_t *magsqlut; // I/Q -> Magnitude-squared lookup table uint16_t *log10lut; // Magnitude -> log10 lookup table int exit; // Exit from the main loop when true // Sample conversion int dc_filter; // should we apply a DC filter? int measure_noise; // should we measure noise power? iq_convert_fn converter_function; struct converter_state *converter_state; // RTLSDR char * dev_name; int gain; int enable_agc; rtlsdr_dev_t *dev; int freq; int ppm_error; // Networking char aneterr[ANET_ERR_LEN]; struct client *clients; // Our clients int ris; // Raw input listening socket int bis; // Beast input listening socket int https; // HTTP listening socket struct net_writer raw_out; // Raw output struct net_writer beast_out; // Beast-format output struct net_writer sbs_out; // SBS-format output struct net_writer fatsv_out; // FATSV-format output #ifdef _WIN32 WSADATA wsaData; // Windows socket initialisation #endif // Configuration char *filename; // Input form file, --ifile option int oversample; int phase_enhance; // Enable phase enhancement if true int nfix_crc; // Number of crc bit error(s) to correct int check_crc; // Only display messages with good CRC int raw; // Raw output format int beast; // Beast binary format output int mode_ac; // Enable decoding of SSR Modes A & C int debug; // Debugging mode int net; // Enable networking int net_only; // Enable just networking uint64_t net_heartbeat_interval; // TCP heartbeat interval (milliseconds) int net_output_sbs_port; // SBS output TCP port int net_output_flush_size; // Minimum Size of output data uint64_t net_output_flush_interval; // Maximum interval (in milliseconds) between outputwrites int net_output_raw_port; // Raw output TCP port int net_input_raw_port; // Raw input TCP port int net_output_beast_port; // Beast output TCP port int net_input_beast_port; // Beast input TCP port char *net_bind_address; // Bind address int net_http_port; // HTTP port int net_fatsv_port; // FlightAware TSV port int net_sndbuf_size; // TCP output buffer size (64Kb * 2^n) int net_verbatim; // if true, send the original message, not the CRC-corrected one int quiet; // Suppress stdout uint32_t show_only; // Only show messages from this ICAO int interactive; // Interactive mode int interactive_rows; // Interactive mode: max number of rows uint64_t interactive_display_ttl;// Interactive mode: TTL display uint64_t stats; // Interval (millis) between stats dumps, int onlyaddr; // Print only ICAO addresses int metric; // Use metric units int mlat; // Use Beast ascii format for raw data output, i.e. @...; iso *...; int interactive_rtl1090; // flight table in interactive mode is formatted like RTL1090 char *json_dir; // Path to json base directory, or NULL not to write json. uint64_t json_interval; // Interval between rewriting the json aircraft file, in milliseconds; also the advertised map refresh interval int json_location_accuracy; // Accuracy of location metadata: 0=none, 1=approx, 2=exact int json_aircraft_history_next; struct { char *content; int clen; } json_aircraft_history[HISTORY_SIZE]; // User details double fUserLat; // Users receiver/antenna lat/lon needed for initial surface location double fUserLon; // Users receiver/antenna lat/lon needed for initial surface location int bUserFlags; // Flags relating to the user details double maxRange; // Absolute maximum decoding range, in *metres* // State tracking struct aircraft *aircrafts; // Statistics struct stats stats_current; struct stats stats_alltime; struct stats stats_periodic; struct stats stats_1min[15]; int stats_latest_1min; struct stats stats_5min; struct stats stats_15min; } Modes; // The struct we use to store information about a decoded message. struct modesMessage { // Generic fields unsigned char msg[MODES_LONG_MSG_BYTES]; // Binary message. unsigned char verbatim[MODES_LONG_MSG_BYTES]; // Binary message, as originally received before correction int msgbits; // Number of bits in message int msgtype; // Downlink format # uint32_t crc; // Message CRC int correctedbits; // No. of bits corrected uint32_t addr; // Address Announced uint64_t timestampMsg; // Timestamp of the message (12MHz clock) struct timespec sysTimestampMsg; // Timestamp of the message (system time) int remote; // If set this message is from a remote station double signalLevel; // RSSI, in the range [0..1], as a fraction of full-scale power int score; // Scoring from scoreModesMessage, if used // DF 11, DF 17 int ca; // Responder capabilities int iid; // DF 17, DF 18 int metype; // Extended squitter message type. int mesub; // Extended squitter message subtype. int heading; // Reported by aircraft, or computed from from EW and NS velocity int raw_latitude; // Non decoded latitude. int raw_longitude; // Non decoded longitude. unsigned nuc_p; // NUCp value implied by message type double fLat; // Coordinates obtained from CPR encoded data if/when decoded double fLon; // Coordinates obtained from CPR encoded data if/when decoded char flight[16]; // 8 chars flight number. int ew_velocity; // E/W velocity. int ns_velocity; // N/S velocity. int vert_rate; // Vertical rate. int velocity; // Reported by aircraft, or computed from from EW and NS velocity unsigned category; // A0 - D7 encoded as a single hex byte // DF 18 int cf; // Control Field // DF4, DF5, DF20, DF21 int fs; // Flight status for DF4,5,20,21 int modeA; // 13 bits identity (Squawk). // DF20, DF21 int bds; // BDS value implied if overlay control was used // Fields used by multiple message types. int altitude; int unit; int bFlags; // Flags related to fields in this structure }; // This one needs modesMessage: #include "track.h" // ======================== function declarations ========================= #ifdef __cplusplus extern "C" { #endif // // Functions exported from mode_ac.c // int detectModeA (uint16_t *m, struct modesMessage *mm); void decodeModeAMessage(struct modesMessage *mm, int ModeA); int ModeAToModeC (unsigned int ModeA); // // Functions exported from mode_s.c // int modesMessageLenByType(int type); int scoreModesMessage(unsigned char *msg, int validbits); int decodeModesMessage (struct modesMessage *mm, unsigned char *msg); void displayModesMessage(struct modesMessage *mm); void useModesMessage (struct modesMessage *mm); // // Functions exported from interactive.c // void interactiveShowData(void); // // Functions exported from net_io.c // void modesInitNet (void); void modesQueueOutput (struct modesMessage *mm); void modesReadFromClient(struct client *c, char *sep, int(*handler)(struct client *, char *)); void modesNetPeriodicWork (void); int decodeBinMessage (struct client *c, char *p); void writeJsonToFile(const char *file, char * (*generator) (const char*,int*)); char *generateAircraftJson(const char *url_path, int *len); char *generateReceiverJson(const char *url_path, int *len); char *generateStatsJson(const char *url_path, int *len); char *generateHistoryJson(const char *url_path, int *len); #ifdef __cplusplus } #endif #endif // __DUMP1090_H