openwebrx-clone/htdocs/lib/DemodulatorPanel.js
2020-12-09 17:38:37 +01:00

340 lines
11 KiB
JavaScript

function DemodulatorPanel(el) {
var self = this;
self.el = el;
self.demodulator = null;
self.mode = null;
self.squelchMargin = 10;
var displayEl = el.find('.webrx-actual-freq')
this.tuneableFrequencyDisplay = displayEl.tuneableFrequencyDisplay();
displayEl.on('frequencychange', function(event, freq) {
self.getDemodulator().set_offset_frequency(freq - self.center_freq);
});
Modes.registerModePanel(this);
el.on('click', '.openwebrx-demodulator-button', function() {
var modulation = $(this).data('modulation');
if (modulation) {
self.setMode(modulation);
} else {
self.disableDigiMode();
}
});
el.on('change', '.openwebrx-secondary-demod-listbox', function() {
var value = $(this).val();
if (value === 'none') {
self.disableDigiMode();
} else {
self.setMode(value);
}
});
el.on('click', '.openwebrx-squelch-auto', function() {
if (!self.squelchAvailable()) return;
el.find('.openwebrx-squelch-slider').val(getLogSmeterValue(smeter_level) + self.getSquelchMargin());
self.updateSquelch();
});
el.on('change', '.openwebrx-squelch-slider', function() {
self.updateSquelch();
});
window.addEventListener('hashchange', function() {
self.onHashChange();
});
};
DemodulatorPanel.prototype.render = function() {
var available = Modes.getModes().filter(function(m){ return m.isAvailable(); });
var normalModes = available.filter(function(m){ return m.type === 'analog'; });
var digiModes = available.filter(function(m){ return m.type === 'digimode'; });
var html = []
var buttons = normalModes.map(function(m){
return $(
'<div ' +
'class="openwebrx-button openwebrx-demodulator-button" ' +
'data-modulation="' + m.modulation + '" ' +
'id="openwebrx-button-' + m.modulation + '" r' +
'>' + m.name + '</div>'
);
});
var $modegrid = $('<div class="openwebrx-modes-grid"></div>');
$modegrid.append.apply($modegrid, buttons);
html.push($modegrid);
html.push($(
'<div class="openwebrx-panel-line openwebrx-panel-flex-line">' +
'<div class="openwebrx-button openwebrx-demodulator-button openwebrx-button-dig">DIG</div>' +
'<select class="openwebrx-secondary-demod-listbox">' +
'<option value="none"></option>' +
digiModes.map(function(m){
return '<option value="' + m.modulation + '">' + m.name + '</option>';
}).join('') +
'</select>' +
'</div>'
));
this.el.find(".openwebrx-modes").html(html);
};
DemodulatorPanel.prototype.setMode = function(requestedModulation) {
var mode = Modes.findByModulation(requestedModulation);
if (!mode) {
return;
}
if (this.mode === mode) {
return;
}
if (!mode.isAvailable()) {
divlog('Modulation "' + mode.name + '" not supported. Please check requirements', true);
return;
}
if (mode.type === 'digimode') {
modulation = mode.underlying[0];
} else {
if (this.mode && this.mode.type === 'digimode' && this.mode.underlying.indexOf(requestedModulation) >= 0) {
// keep the mode, just switch underlying modulation
mode = this.mode;
modulation = requestedModulation;
} else {
modulation = mode.modulation;
}
}
var current = this.collectParams();
if (this.demodulator) {
current.offset_frequency = this.demodulator.get_offset_frequency();
current.squelch_level = this.demodulator.getSquelch();
}
this.stopDemodulator();
this.demodulator = new Demodulator(current.offset_frequency, modulation);
this.demodulator.setSquelch(current.squelch_level);
var self = this;
var updateFrequency = function(freq) {
self.tuneableFrequencyDisplay.setFrequency(self.center_freq + freq);
self.updateHash();
};
this.demodulator.on("frequencychange", updateFrequency);
updateFrequency(this.demodulator.get_offset_frequency());
var updateSquelch = function(squelch) {
self.el.find('.openwebrx-squelch-slider')
.val(squelch)
.attr('title', 'Squelch (' + squelch + ' dB)');
self.updateHash();
};
this.demodulator.on('squelchchange', updateSquelch);
updateSquelch(this.demodulator.getSquelch());
if (mode.type === 'digimode') {
this.demodulator.set_secondary_demod(mode.modulation);
if (mode.bandpass) {
this.demodulator.setBandpass(mode.bandpass);
}
} else {
this.demodulator.set_secondary_demod(false);
}
this.demodulator.start();
this.mode = mode;
this.updateButtons();
this.updatePanels();
this.updateHash();
};
DemodulatorPanel.prototype.disableDigiMode = function() {
// just a little trick to get out of the digimode
delete this.mode;
this.setMode(this.getDemodulator().get_modulation());
};
DemodulatorPanel.prototype.updatePanels = function() {
var modulation = this.getDemodulator().get_secondary_demod();
$('#openwebrx-panel-digimodes').attr('data-mode', modulation);
toggle_panel("openwebrx-panel-digimodes", !!modulation);
toggle_panel("openwebrx-panel-wsjt-message", ['ft8', 'wspr', 'jt65', 'jt9', 'ft4', 'fst4', 'fst4w'].indexOf(modulation) >= 0);
toggle_panel("openwebrx-panel-js8-message", modulation == "js8");
toggle_panel("openwebrx-panel-packet-message", modulation === "packet");
toggle_panel("openwebrx-panel-pocsag-message", modulation === "pocsag");
modulation = this.getDemodulator().get_modulation();
var showing = 'openwebrx-panel-metadata-' + modulation;
$(".openwebrx-meta-panel").each(function (_, p) {
toggle_panel(p.id, p.id === showing);
});
clear_metadata();
};
DemodulatorPanel.prototype.getDemodulator = function() {
return this.demodulator;
};
DemodulatorPanel.prototype.collectParams = function() {
var defaults = {
offset_frequency: 0,
squelch_level: -150,
mod: 'nfm'
}
return $.extend(new Object(), defaults, this.initialParams || {}, this.transformHashParams(this.parseHash()));
};
DemodulatorPanel.prototype.startDemodulator = function() {
if (!Modes.initComplete() || !this.center_freq) return;
var params = this.collectParams();
this._apply(params);
};
DemodulatorPanel.prototype.stopDemodulator = function() {
if (!this.demodulator) {
return;
}
this.demodulator.stop();
this.demodulator = null;
this.mode = null;
}
DemodulatorPanel.prototype._apply = function(params) {
this.setMode(params.mod);
this.getDemodulator().set_offset_frequency(params.offset_frequency);
this.getDemodulator().setSquelch(params.squelch_level);
this.updateButtons();
};
DemodulatorPanel.prototype.setInitialParams = function(params) {
this.initialParams = params;
};
DemodulatorPanel.prototype.onHashChange = function() {
this._apply(this.transformHashParams(this.parseHash()));
};
DemodulatorPanel.prototype.transformHashParams = function(params) {
var ret = {
mod: params.secondary_mod || params.mod
};
if (typeof(params.offset_frequency) !== 'undefined') ret.offset_frequency = params.offset_frequency;
if (typeof(params.sql) !== 'undefined') ret.squelch_level = parseInt(params.sql);
return ret;
};
DemodulatorPanel.prototype.squelchAvailable = function () {
return this.mode && this.mode.squelch;
}
DemodulatorPanel.prototype.updateButtons = function() {
var $buttons = this.el.find(".openwebrx-demodulator-button");
$buttons.removeClass("highlighted").removeClass('same-mod');
var demod = this.getDemodulator()
if (!demod) return;
this.el.find('[data-modulation=' + demod.get_modulation() + ']').addClass("highlighted");
var secondary_demod = demod.get_secondary_demod()
if (secondary_demod) {
this.el.find(".openwebrx-button-dig").addClass("highlighted");
this.el.find('.openwebrx-secondary-demod-listbox').val(secondary_demod);
var mode = Modes.findByModulation(secondary_demod);
if (mode) {
var self = this;
mode.underlying.filter(function(m) {
return m !== demod.get_modulation();
}).forEach(function(m) {
self.el.find('[data-modulation=' + m + ']').addClass('same-mod')
});
}
} else {
this.el.find('.openwebrx-secondary-demod-listbox').val('none');
}
var squelch_disabled = !this.squelchAvailable();
this.el.find('.openwebrx-squelch-slider').prop('disabled', squelch_disabled);
this.el.find('.openwebrx-squelch-auto')[squelch_disabled ? 'addClass' : 'removeClass']('disabled');
}
DemodulatorPanel.prototype.setCenterFrequency = function(center_freq) {
var me = this;
if (me.centerFreqTimeout) {
clearTimeout(me.centerFreqTimeout);
me.centerFreqTimeout = false;
}
this.centerFreqTimeout = setTimeout(function() {
me.stopDemodulator();
me.center_freq = center_freq;
me.startDemodulator();
me.centerFreqTimeout = false;
}, 50);
};
DemodulatorPanel.prototype.parseHash = function() {
if (!window.location.hash) {
return {};
}
var params = window.location.hash.substring(1).split(",").map(function(x) {
var harr = x.split('=');
return [harr[0], harr.slice(1).join('=')];
}).reduce(function(params, p){
params[p[0]] = p[1];
return params;
}, {});
return this.validateHash(params);
};
DemodulatorPanel.prototype.validateHash = function(params) {
var self = this;
params = Object.keys(params).filter(function(key) {
if (key == 'freq' || key == 'mod' || key == 'secondary_mod' || key == 'sql') {
return params.freq && Math.abs(params.freq - self.center_freq) < bandwidth / 2;
}
return true;
}).reduce(function(p, key) {
p[key] = params[key];
return p;
}, {});
if (params['freq']) {
params['offset_frequency'] = params['freq'] - self.center_freq;
delete params['freq'];
}
return params;
};
DemodulatorPanel.prototype.updateHash = function() {
var demod = this.getDemodulator();
if (!demod) return;
var self = this;
window.location.hash = $.map({
freq: demod.get_offset_frequency() + self.center_freq,
mod: demod.get_modulation(),
secondary_mod: demod.get_secondary_demod(),
sql: demod.getSquelch(),
}, function(value, key){
if (typeof(value) === 'undefined' || value === false) return undefined;
return key + '=' + value;
}).filter(function(v) {
return !!v;
}).join(',');
};
DemodulatorPanel.prototype.updateSquelch = function() {
var sliderValue = parseInt(this.el.find(".openwebrx-squelch-slider").val());
var demod = this.getDemodulator();
if (demod) demod.setSquelch(sliderValue);
};
DemodulatorPanel.prototype.setSquelchMargin = function(margin) {
if (!margin || this.squelchMargin == margin) return;
this.squelchMargin = margin;
};
DemodulatorPanel.prototype.getSquelchMargin = function() {
return this.squelchMargin;
};
$.fn.demodulatorPanel = function(){
if (!this.data('panel')) {
this.data('panel', new DemodulatorPanel(this));
};
return this.data('panel');
};