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restructure, bugfixes
This commit is contained in:
NoobishSVK
408
server/datahandler.js
Normal file
408
server/datahandler.js
Normal file
@@ -0,0 +1,408 @@
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/* Libraries / Imports */
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const fs = require('fs');
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const https = require('https');
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const koffi = require('koffi');
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const path = require('path');
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const os = require('os');
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const platform = os.platform();
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const cpuArchitecture = os.arch();
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const { configName, serverConfig, configUpdate, configSave } = require('./server_config');
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let unicode_type;
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let shared_Library;
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if (platform === 'win32') {
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unicode_type = 'int16_t';
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shared_Library=path.join(__dirname, "libraries", "librdsparser.dll");
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} else if (platform === 'linux') {
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unicode_type = 'int32_t';
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shared_Library=path.join(__dirname, "libraries", "librdsparser_" + cpuArchitecture + ".so");
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}
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const lib = koffi.load(shared_Library);
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const { fetchTx } = require('./tx_search.js');
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koffi.proto('void callback_pi(void *rds, void *user_data)');
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koffi.proto('void callback_pty(void *rds, void *user_data)');
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koffi.proto('void callback_tp(void *rds, void *user_data)');
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koffi.proto('void callback_ta(void *rds, void *user_data)');
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koffi.proto('void callback_ms(void *rds, void *user_data)');
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koffi.proto('void callback_ecc(void *rds, void *user_data)');
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koffi.proto('void callback_country(void *rds, void *user_data)');
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koffi.proto('void callback_af(void *rds, uint32_t af, void *user_data)');
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koffi.proto('void callback_ps(void *rds, void *user_data)');
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koffi.proto('void callback_rt(void *rds, int flag, void *user_data)');
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koffi.proto('void callback_ptyn(void *rds, void *user_data)');
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koffi.proto('void callback_ct(void *rds, void *ct, void *user_data)');
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const rdsparser = {
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new: lib.func('void* rdsparser_new()'),
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free: lib.func('void rdsparser_free(void *rds)'),
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clear: lib.func('void rdsparser_clear(void *rds)'),
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parse_string: lib.func('bool rdsparser_parse_string(void *rds, const char *input)'),
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set_text_correction: lib.func('bool rdsparser_set_text_correction(void *rds, uint8_t text, uint8_t type, uint8_t error)'),
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set_text_progressive: lib.func('bool rdsparser_set_text_progressive(void *rds, uint8_t string, bool state)'),
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get_pi: lib.func('int32_t rdsparser_get_pi(void *rds)'),
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get_pty: lib.func('int8_t rdsparser_get_pty(void *rds)'),
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get_tp: lib.func('int8_t rdsparser_get_tp(void *rds)'),
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get_ta: lib.func('int8_t rdsparser_get_ta(void *rds)'),
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get_ms: lib.func('int8_t rdsparser_get_ms(void *rds)'),
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get_ecc: lib.func('int16_t rdsparser_get_ecc(void *rds)'),
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get_country: lib.func('int rdsparser_get_country(void *rds)'),
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get_ps: lib.func('void* rdsparser_get_ps(void *rds)'),
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get_rt: lib.func('void* rdsparser_get_rt(void *rds, int flag)'),
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get_ptyn: lib.func('void* rdsparser_get_ptyn(void *rds)'),
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register_pi: lib.func('void rdsparser_register_pi(void *rds, void *cb)'),
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register_pty: lib.func('void rdsparser_register_pty(void *rds, void *cb)'),
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register_tp: lib.func('void rdsparser_register_tp(void *rds, void *cb)'),
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register_ta: lib.func('void rdsparser_register_ta(void *rds, void *cb)'),
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register_ms: lib.func('void rdsparser_register_ms(void *rds, void *cb)'),
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register_ecc: lib.func('void rdsparser_register_ecc(void *rds, void *cb)'),
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register_country: lib.func('void rdsparser_register_country(void *rds, void *cb)'),
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register_af: lib.func('void rdsparser_register_af(void *rds, void *cb)'),
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register_ps: lib.func('void rdsparser_register_ps(void *rds, void *cb)'),
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register_rt: lib.func('void rdsparser_register_rt(void *rds, void *cb)'),
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register_ptyn: lib.func('void rdsparser_register_ptyn(void *rds, void *cb)'),
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register_ct: lib.func('void rdsparser_register_ct(void *rds, void *cb)'),
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string_get_content: lib.func(unicode_type + '* rdsparser_string_get_content(void *string)'),
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string_get_errors: lib.func('uint8_t* rdsparser_string_get_errors(void *string)'),
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string_get_length: lib.func('uint8_t rdsparser_string_get_length(void *string)'),
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ct_get_year: lib.func('uint16_t rdsparser_ct_get_year(void *ct)'),
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ct_get_month: lib.func('uint8_t rdsparser_ct_get_month(void *ct)'),
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ct_get_day: lib.func('uint8_t rdsparser_ct_get_day(void *ct)'),
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ct_get_hour: lib.func('uint8_t rdsparser_ct_get_hour(void *ct)'),
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ct_get_minute: lib.func('uint8_t rdsparser_ct_get_minute(void *ct)'),
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ct_get_offset: lib.func('int8_t rdsparser_ct_get_offset(void *ct)'),
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pty_lookup_short: lib.func('const char* rdsparser_pty_lookup_short(int8_t pty, bool rbds)'),
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pty_lookup_long: lib.func('const char* rdsparser_pty_lookup_long(int8_t pty, bool rbds)'),
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country_lookup_name: lib.func('const char* rdsparser_country_lookup_name(int country)'),
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country_lookup_iso: lib.func('const char* rdsparser_country_lookup_iso(int country)')
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}
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const callbacks = {
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pi: koffi.register(rds => (
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value = rdsparser.get_pi(rds)
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//console.log('PI: ' + value.toString(16).toUpperCase())
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), 'callback_pi*'),
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pty: koffi.register(rds => (
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value = rdsparser.get_pty(rds),
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dataToSend.pty = value
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), 'callback_pty*'),
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tp: koffi.register(rds => (
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value = rdsparser.get_tp(rds),
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dataToSend.tp = value
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), 'callback_tp*'),
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ta: koffi.register(rds => (
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value = rdsparser.get_ta(rds),
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dataToSend.ta = value
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), 'callback_ta*'),
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ms: koffi.register(rds => (
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value = rdsparser.get_ms(rds),
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dataToSend.ms = value
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), 'callback_ms*'),
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af: koffi.register((rds, value) => (
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dataToSend.af.push(value)
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), 'callback_af*'),
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ecc: koffi.register(rds => (
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value = rdsparser.get_ecc(rds)
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), 'callback_ecc*'),
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country: koffi.register(rds => (
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value = rdsparser.get_country(rds),
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display = rdsparser.country_lookup_name(value),
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iso = rdsparser.country_lookup_iso(value),
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dataToSend.country_name = display,
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dataToSend.country_iso = iso
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), 'callback_country*'),
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ps: koffi.register(rds => (
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ps = rdsparser.get_ps(rds),
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dataToSend.ps = decode_unicode(ps),
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dataToSend.ps_errors = decode_errors(ps)
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), 'callback_ps*'),
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rt: koffi.register((rds, flag) => {
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const rt = rdsparser.get_rt(rds, flag);
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if (flag === 0) {
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dataToSend.rt0 = decode_unicode(rt);
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dataToSend.rt0_errors = decode_errors(rt);
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}
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if (flag === 1) {
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dataToSend.rt1 = decode_unicode(rt);
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dataToSend.rt1_errors = decode_errors(rt);
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}
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}, 'callback_rt*'),
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ptyn: koffi.register((rds, flag) => (
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value = decode_unicode(rdsparser.get_ptyn(rds))
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/*console.log('PTYN: ' + value)*/
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), 'callback_ptyn*'),
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ct: koffi.register((rds, ct) => (
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year = rdsparser.ct_get_year(ct),
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month = String(rdsparser.ct_get_month(ct)).padStart(2, '0'),
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day = String(rdsparser.ct_get_day(ct)).padStart(2, '0'),
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hour = String(rdsparser.ct_get_hour(ct)).padStart(2, '0'),
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minute = String(rdsparser.ct_get_minute(ct)).padStart(2, '0'),
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offset = rdsparser.ct_get_offset(ct),
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tz_sign = (offset >= 0 ? '+' : '-'),
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tz_hour = String(Math.abs(Math.floor(offset / 60))).padStart(2, '0'),
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tz_minute = String(Math.abs(offset % 60)).padStart(2, '0')
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//console.log('CT: ' + year + '-' + month + '-' + day + ' ' + hour + ':' + minute + ' (' + tz_sign + tz_hour + ':' + tz_minute + ')')
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), 'callback_ct*')
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};
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let rds = rdsparser.new()
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rdsparser.set_text_correction(rds, 0, 0, 2);
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rdsparser.set_text_correction(rds, 0, 1, 2);
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rdsparser.set_text_correction(rds, 1, 0, 2);
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rdsparser.set_text_correction(rds, 1, 1, 2);
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rdsparser.set_text_progressive(rds, 0, true)
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rdsparser.set_text_progressive(rds, 1, true)
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rdsparser.register_pi(rds, callbacks.pi);
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rdsparser.register_pty(rds, callbacks.pty);
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rdsparser.register_tp(rds, callbacks.tp);
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rdsparser.register_ta(rds, callbacks.ta);
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rdsparser.register_ms(rds, callbacks.ms);
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rdsparser.register_ecc(rds, callbacks.ecc);
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rdsparser.register_country(rds, callbacks.country);
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rdsparser.register_af(rds, callbacks.af);
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rdsparser.register_ps(rds, callbacks.ps);
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rdsparser.register_rt(rds, callbacks.rt);
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rdsparser.register_ptyn(rds, callbacks.ptyn);
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rdsparser.register_ct(rds, callbacks.ct);
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const decode_unicode = function(string) {
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let length = rdsparser.string_get_length(string);
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if (length) {
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let content = rdsparser.string_get_content(string);
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let array = koffi.decode(content, unicode_type + ' [' + length + ']');
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return String.fromCodePoint.apply(String, array);
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}
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return '';
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};
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const decode_errors = function(string) {
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let length = rdsparser.string_get_length(string);
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if (length) {
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let errors = rdsparser.string_get_errors(string);
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let array = koffi.decode(errors, 'uint8_t [' + length + ']');
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return Uint8Array.from(array).toString();
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}
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return '';
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};
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const updateInterval = 75;
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const clientUpdateIntervals = new Map(); // Store update intervals for each client
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// Initialize the data object
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var dataToSend = {
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pi: '?',
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freq: 87.500.toFixed(3),
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previousFreq: 87.500.toFixed(3),
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signal: 0,
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highestSignal: -Infinity,
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st: false,
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st_forced: false,
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rds: false,
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ps: '',
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tp: 0,
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ta: 0,
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ms: -1,
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pty: 0,
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af: [],
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rt0: '',
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rt1: '',
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ims: 0,
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eq: 0,
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ant: 0,
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txInfo: {
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station: '',
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pol: '',
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erp: '',
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city: '',
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itu: '',
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distance: '',
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azimuth: ''
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},
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country_name: '',
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country_iso: 'UN',
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users: 0,
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};
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const filterMappings = {
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'G11': { eq: 1, ims: 1 },
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'G01': { eq: 0, ims: 1 },
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'G10': { eq: 1, ims: 0 },
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'G00': { eq: 0, ims: 0 }
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};
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var legacyRdsPiBuffer = null;
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const initialData = { ...dataToSend };
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const resetToDefault = dataToSend => Object.assign(dataToSend, initialData);
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function handleData(ws, receivedData) {
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// Retrieve the last update time for this client
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let lastUpdateTime = clientUpdateIntervals.get(ws) || 0;
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const currentTime = Date.now();
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let modifiedData, parsedValue;
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const receivedLines = receivedData.split('\n');
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for (const receivedLine of receivedLines) {
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switch (true) {
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case receivedLine.startsWith('P'):
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modifiedData = receivedLine.slice(1);
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legacyRdsPiBuffer = modifiedData;
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if (dataToSend.pi.length >= modifiedData.length || dataToSend.pi == '?') {
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dataToSend.pi = modifiedData;
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}
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break;
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case receivedLine.startsWith('T'):
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resetToDefault(dataToSend);
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dataToSend.af.length = 0;
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rdsparser.clear(rds);
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modifiedData = receivedLine.substring(1);
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parsedValue = parseFloat(modifiedData);
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if (!isNaN(parsedValue)) {
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initialData.freq = (parsedValue / 1000).toFixed(3);
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dataToSend.freq = (parsedValue / 1000).toFixed(3);
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dataToSend.pi = '?';
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}
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break;
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case receivedLine.startsWith('Z'):
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dataToSend.ant = receivedLine.substring(1);
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initialData.ant = receivedLine.substring(1);
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break;
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case receivedLine.startsWith('G'):
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const mapping = filterMappings[receivedLine];
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if (mapping) {
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initialData.eq = mapping.eq;
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initialData.ims = mapping.ims;
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dataToSend.eq = mapping.eq;
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dataToSend.ims = mapping.ims;
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}
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break;
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case receivedData.startsWith('Sm'):
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processSignal(receivedData, false, false);
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break;
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case receivedData.startsWith('Ss'):
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processSignal(receivedData, true, false);
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break;
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case receivedData.startsWith('SS'):
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processSignal(receivedData, true, true);
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break;
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case receivedData.startsWith('SM'):
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processSignal(receivedData, false, true);
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break;
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case receivedLine.startsWith('R'):
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modifiedData = receivedLine.slice(1);
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dataToSend.rds = true;
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if (modifiedData.length == 14) {
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// Handle legacy RDS message
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var errorsNew = 0;
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var pi;
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if (legacyRdsPiBuffer !== null &&
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legacyRdsPiBuffer.length >= 4) {
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pi = legacyRdsPiBuffer.slice(0, 4);
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// PI message does not carry explicit information about
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// error correction, but this is a good substitute.
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errorsNew = (legacyRdsPiBuffer.length - 4) << 6;
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} else {
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pi = '0000';
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errorsNew = (0x03 << 6);
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}
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let errorsOld = parseInt(modifiedData.slice(12), 16);
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errorsNew |= (errorsOld & 0x03) << 4;
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errorsNew |= (errorsOld & 0x0C);
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errorsNew |= (errorsOld & 0x30) >> 4;
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modifiedData = pi + modifiedData.slice(0, 12);
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modifiedData += errorsNew.toString(16).padStart(2, '0');
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}
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rdsparser.parse_string(rds, modifiedData);
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legacyRdsPiBuffer = null;
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break;
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}
|
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}
|
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// Get the received TX info
|
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const currentTx = fetchTx(parseFloat(dataToSend.freq).toFixed(1), dataToSend.pi, dataToSend.ps);
|
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if(currentTx && currentTx.station !== undefined) {
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dataToSend.txInfo = {
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station: currentTx.station,
|
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pol: currentTx.pol,
|
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erp: currentTx.erp,
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city: currentTx.city,
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itu: currentTx.itu,
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distance: currentTx.distance,
|
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azimuth: currentTx.azimuth
|
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}
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}
|
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|
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// Send the updated data to the client
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const dataToSendJSON = JSON.stringify(dataToSend);
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if (currentTime - lastUpdateTime >= updateInterval) {
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clientUpdateIntervals.set(ws, currentTime); // Update the last update time for this client
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ws.send(dataToSendJSON);
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}
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}
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function showOnlineUsers(currentUsers) {
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dataToSend.users = currentUsers;
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initialData.users = currentUsers;
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}
|
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|
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function convertSignal(dBFS, fullScaleVoltage = 1, inputImpedance = 300) {
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// Convert dBFS to voltage
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let voltage = Math.pow(10, dBFS / 20) * fullScaleVoltage;
|
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|
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// Convert voltage to microvolts
|
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let uV = voltage * 1e6;
|
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|
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// Convert microvolts to dBuV
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let dBf = 20 * Math.log10(uV / Math.sqrt(2) / Math.sqrt(inputImpedance));
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return dBf.toFixed(2);
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}
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function processSignal(receivedData, st, stForced) {
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const modifiedData = receivedData.substring(2);
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const parsedValue = parseFloat(modifiedData);
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dataToSend.st = st;
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dataToSend.st_forced = stForced;
|
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initialData.st = st;
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initialData.st_forced = stForced;
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||||
|
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if (!isNaN(parsedValue)) {
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||||
/*if (serverConfig.device && serverConfig.device === 'sdr') {
|
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dataToSend.signal = convertSignal(parsedValue);
|
||||
initialData.signal = convertSignal(parsedValue);
|
||||
} else {*/
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||||
dataToSend.signal = parsedValue.toFixed(2);
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initialData.signal = parsedValue.toFixed(2);
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//}
|
||||
|
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if(dataToSend.signal > dataToSend.highestSignal) {
|
||||
dataToSend.highestSignal = dataToSend.signal;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
handleData, showOnlineUsers, dataToSend, initialData, resetToDefault
|
||||
};
|
||||
Reference in New Issue
Block a user