openwebrx-clone/htdocs/openwebrx.js
2020-04-19 22:10:32 +02:00

2267 lines
84 KiB
JavaScript

/*
This file is part of OpenWebRX,
an open-source SDR receiver software with a web UI.
Copyright (c) 2013-2015 by Andras Retzler <randras@sdr.hu>
Copyright (c) 2019-2020 by Jakob Ketterl <dd5jfk@darc.de>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
*/
is_firefox = navigator.userAgent.indexOf("Firefox") >= 0;
var bandwidth;
var center_freq;
var fft_size;
var fft_fps;
var fft_compression = "none";
var fft_codec;
var waterfall_setup_done = 0;
var secondary_fft_size;
var rx_photo_state = 1;
function e(what) {
return document.getElementById(what);
}
var rx_photo_height;
function init_rx_photo() {
var clip = e("webrx-top-photo-clip");
rx_photo_height = clip.clientHeight;
clip.style.maxHeight = rx_photo_height + "px";
$.extend($.easing, {
easeOutCubic:function(x) {
return 1 - Math.pow( 1 - x, 3 );
}
});
window.setTimeout(function () {
$('#webrx-rx-photo-title').animate({opacity: 0}, 500);
}, 1000);
window.setTimeout(function () {
$('#webrx-rx-photo-desc').animate({opacity: 0}, 500);
}, 1500);
window.setTimeout(function () {
close_rx_photo()
}, 2500);
$('#webrx-top-container').find('.openwebrx-photo-trigger').click(toggle_rx_photo);
}
var dont_toggle_rx_photo_flag = 0;
function dont_toggle_rx_photo() {
dont_toggle_rx_photo_flag = 1;
}
function toggle_rx_photo() {
if (dont_toggle_rx_photo_flag) {
dont_toggle_rx_photo_flag = 0;
return;
}
if (rx_photo_state) close_rx_photo();
else open_rx_photo()
}
function close_rx_photo() {
rx_photo_state = 0;
$('#webrx-top-photo-clip').animate({maxHeight: 67}, {duration: 1000, easing: 'easeOutCubic'});
e("openwebrx-rx-details-arrow-down").style.display = "block";
e("openwebrx-rx-details-arrow-up").style.display = "none";
}
function open_rx_photo() {
rx_photo_state = 1;
e("webrx-rx-photo-desc").style.opacity = 1;
e("webrx-rx-photo-title").style.opacity = 1;
$('#webrx-top-photo-clip').animate({maxHeight: rx_photo_height}, {duration: 1000, easing: 'easeOutCubic'});
e("openwebrx-rx-details-arrow-down").style.display = "none";
e("openwebrx-rx-details-arrow-up").style.display = "block";
}
function updateVolume() {
audioEngine.setVolume(parseFloat(e("openwebrx-panel-volume").value) / 100);
}
function toggleMute() {
if (mute) {
mute = false;
e("openwebrx-mute-on").id = "openwebrx-mute-off";
e("openwebrx-mute-img").src = "static/gfx/openwebrx-speaker.png";
e("openwebrx-panel-volume").disabled = false;
e("openwebrx-panel-volume").style.opacity = 1.0;
e("openwebrx-panel-volume").value = volumeBeforeMute;
} else {
mute = true;
e("openwebrx-mute-off").id = "openwebrx-mute-on";
e("openwebrx-mute-img").src = "static/gfx/openwebrx-speaker-muted.png";
e("openwebrx-panel-volume").disabled = true;
e("openwebrx-panel-volume").style.opacity = 0.5;
volumeBeforeMute = e("openwebrx-panel-volume").value;
e("openwebrx-panel-volume").value = 0;
}
updateVolume();
}
function zoomInOneStep() {
zoom_set(zoom_level + 1);
}
function zoomOutOneStep() {
zoom_set(zoom_level - 1);
}
function zoomInTotal() {
zoom_set(zoom_levels.length - 1);
}
function zoomOutTotal() {
zoom_set(0);
}
function setSquelchToAuto() {
e("openwebrx-panel-squelch").value = (getLogSmeterValue(smeter_level) + 10).toString();
updateSquelch();
}
function updateSquelch() {
var sliderValue = parseInt($("#openwebrx-panel-squelch").val());
ws.send(JSON.stringify({"type": "dspcontrol", "params": {"squelch_level": sliderValue}}));
}
var waterfall_min_level;
var waterfall_max_level;
var waterfall_min_level_default;
var waterfall_max_level_default;
var waterfall_colors;
var waterfall_auto_level_margin;
function updateWaterfallColors(which) {
var wfmax = e("openwebrx-waterfall-color-max");
var wfmin = e("openwebrx-waterfall-color-min");
if (parseInt(wfmin.value) >= parseInt(wfmax.value)) {
if (!which) wfmin.value = (parseInt(wfmax.value) - 1).toString();
else wfmax.value = (parseInt(wfmin.value) + 1).toString();
}
waterfall_min_level = parseInt(wfmin.value);
waterfall_max_level = parseInt(wfmax.value);
}
function waterfallColorsDefault() {
waterfall_min_level = waterfall_min_level_default;
waterfall_max_level = waterfall_max_level_default;
e("openwebrx-waterfall-color-min").value = waterfall_min_level.toString();
e("openwebrx-waterfall-color-max").value = waterfall_max_level.toString();
}
function waterfallColorsAuto() {
e("openwebrx-waterfall-color-min").value = (waterfall_measure_minmax_min - waterfall_auto_level_margin.min).toString();
e("openwebrx-waterfall-color-max").value = (waterfall_measure_minmax_max + waterfall_auto_level_margin.max).toString();
updateWaterfallColors(0);
}
function setSmeterRelativeValue(value) {
if (value < 0) value = 0;
if (value > 1.0) value = 1.0;
var bar = e("openwebrx-smeter-bar");
var outer = e("openwebrx-smeter-outer");
bar.style.width = (outer.offsetWidth * value).toString() + "px";
var bgRed = "linear-gradient(to top, #ff5939 , #961700)";
var bgGreen = "linear-gradient(to top, #22ff2f , #008908)";
var bgYellow = "linear-gradient(to top, #fff720 , #a49f00)";
bar.style.background = (value > 0.9) ? bgRed : ((value > 0.7) ? bgYellow : bgGreen);
}
function setSquelchSliderBackground(val) {
var $slider = $('#openwebrx-panel-squelch');
var min = Number($slider.attr('min'));
var max = Number($slider.attr('max'));
var sliderPosition = $slider.val();
var relative = (val - min) / (max - min);
// use a brighter color when squelch is open
var color = val >= sliderPosition ? '#22ff2f' : '#008908';
// we don't use the gradient, but separate the colors discretely using css tricks
var style = 'linear-gradient(90deg, ' + color + ', ' + color + ' ' + relative * 100 + '%, #B6B6B6 ' + relative * 100 + '%)';
$slider.css('--track-background', style);
}
function getLogSmeterValue(value) {
return 10 * Math.log10(value);
}
function getLinearSmeterValue(db_value) {
return Math.pow(10, db_value / 10);
}
function setSmeterAbsoluteValue(value) //the value that comes from `csdr squelch_and_smeter_cc`
{
var logValue = getLogSmeterValue(value);
setSquelchSliderBackground(logValue);
var lowLevel = waterfall_min_level - 20;
var highLevel = waterfall_max_level + 20;
var percent = (logValue - lowLevel) / (highLevel - lowLevel);
setSmeterRelativeValue(percent);
e("openwebrx-smeter-db").innerHTML = logValue.toFixed(1) + " dB";
}
function typeInAnimation(element, timeout, what, onFinish) {
if (!what) {
onFinish();
return;
}
element.innerHTML += what[0];
window.setTimeout(function () {
typeInAnimation(element, timeout, what.substring(1), onFinish);
}, timeout);
}
// ========================================================
// ================ DEMODULATOR ROUTINES ================
// ========================================================
demodulators = [];
var demodulator_color_index = 0;
var demodulator_colors = ["#ffff00", "#00ff00", "#00ffff", "#058cff", "#ff9600", "#a1ff39", "#ff4e39", "#ff5dbd"];
function demodulators_get_next_color() {
if (demodulator_color_index >= demodulator_colors.length) demodulator_color_index = 0;
return (demodulator_colors[demodulator_color_index++]);
}
function demod_envelope_draw(range, from, to, color, line) { // ____
// Draws a standard filter envelope like this: _/ \_
// Parameters are given in offset frequency (Hz).
// Envelope is drawn on the scale canvas.
// A "drag range" object is returned, containing information about the draggable areas of the envelope
// (beginning, ending and the line showing the offset frequency).
if (typeof color === "undefined") color = "#ffff00"; //yellow
var env_bounding_line_w = 5; //
var env_att_w = 5; // _______ ___env_h2 in px ___|_____
var env_h1 = 17; // _/| \_ ___env_h1 in px _/ |_ \_
var env_h2 = 5; // |||env_att_line_w |_env_lineplus
var env_lineplus = 1; // ||env_bounding_line_w
var env_line_click_area = 6;
//range=get_visible_freq_range();
var from_px = scale_px_from_freq(from, range);
var to_px = scale_px_from_freq(to, range);
if (to_px < from_px) /* swap'em */ {
var temp_px = to_px;
to_px = from_px;
from_px = temp_px;
}
/*from_px-=env_bounding_line_w/2;
to_px+=env_bounding_line_w/2;*/
from_px -= (env_att_w + env_bounding_line_w);
to_px += (env_att_w + env_bounding_line_w);
// do drawing:
scale_ctx.lineWidth = 3;
scale_ctx.strokeStyle = color;
scale_ctx.fillStyle = color;
var drag_ranges = {envelope_on_screen: false, line_on_screen: false};
if (!(to_px < 0 || from_px > window.innerWidth)) // out of screen?
{
drag_ranges.beginning = {x1: from_px, x2: from_px + env_bounding_line_w + env_att_w};
drag_ranges.ending = {x1: to_px - env_bounding_line_w - env_att_w, x2: to_px};
drag_ranges.whole_envelope = {x1: from_px, x2: to_px};
drag_ranges.envelope_on_screen = true;
scale_ctx.beginPath();
scale_ctx.moveTo(from_px, env_h1);
scale_ctx.lineTo(from_px + env_bounding_line_w, env_h1);
scale_ctx.lineTo(from_px + env_bounding_line_w + env_att_w, env_h2);
scale_ctx.lineTo(to_px - env_bounding_line_w - env_att_w, env_h2);
scale_ctx.lineTo(to_px - env_bounding_line_w, env_h1);
scale_ctx.lineTo(to_px, env_h1);
scale_ctx.globalAlpha = 0.3;
scale_ctx.fill();
scale_ctx.globalAlpha = 1;
scale_ctx.stroke();
}
if (typeof line !== "undefined") // out of screen?
{
var line_px = scale_px_from_freq(line, range);
if (!(line_px < 0 || line_px > window.innerWidth)) {
drag_ranges.line = {x1: line_px - env_line_click_area / 2, x2: line_px + env_line_click_area / 2};
drag_ranges.line_on_screen = true;
scale_ctx.moveTo(line_px, env_h1 + env_lineplus);
scale_ctx.lineTo(line_px, env_h2 - env_lineplus);
scale_ctx.stroke();
}
}
return drag_ranges;
}
function demod_envelope_where_clicked(x, drag_ranges, key_modifiers) { // Check exactly what the user has clicked based on ranges returned by demod_envelope_draw().
var in_range = function (x, range) {
return range.x1 <= x && range.x2 >= x;
};
var dr = Demodulator.draggable_ranges;
if (key_modifiers.shiftKey) {
//Check first: shift + center drag emulates BFO knob
if (drag_ranges.line_on_screen && in_range(x, drag_ranges.line)) return dr.bfo;
//Check second: shift + envelope drag emulates PBF knob
if (drag_ranges.envelope_on_screen && in_range(x, drag_ranges.whole_envelope)) return dr.pbs;
}
if (drag_ranges.envelope_on_screen) {
// For low and high cut:
if (in_range(x, drag_ranges.beginning)) return dr.beginning;
if (in_range(x, drag_ranges.ending)) return dr.ending;
// Last priority: having clicked anything else on the envelope, without holding the shift key
if (in_range(x, drag_ranges.whole_envelope)) return dr.anything_else;
}
return dr.none; //User doesn't drag the envelope for this demodulator
}
//******* class Demodulator *******
// this can be used as a base class for ANY demodulator
Demodulator = function (offset_frequency) {
this.offset_frequency = offset_frequency;
this.envelope = {};
this.color = demodulators_get_next_color();
this.stop = function () {
};
};
//ranges on filter envelope that can be dragged:
Demodulator.draggable_ranges = {
none: 0,
beginning: 1 /*from*/,
ending: 2 /*to*/,
anything_else: 3,
bfo: 4 /*line (while holding shift)*/,
pbs: 5
}; //to which parameter these correspond in demod_envelope_draw()
//******* class Demodulator_default_analog *******
// This can be used as a base for basic audio demodulators.
// It already supports most basic modulations used for ham radio and commercial services: AM/FM/LSB/USB
demodulator_response_time = 50;
function Demodulator_default_analog(offset_frequency, subtype) {
Demodulator.call(this, offset_frequency);
this.subtype = subtype;
this.filter = {
min_passband: 100,
getLimits: function() {
var max_bw;
if (secondary_demod === 'pocsag') {
max_bw = 12500;
} else {
max_bw = (audioEngine.getOutputRate() / 2) - 1;
}
return {
high: max_bw,
low: -max_bw
};
}
};
//Subtypes only define some filter parameters and the mod string sent to server,
//so you may set these parameters in your custom child class.
//Why? As of demodulation is done on the server, difference is mainly on the server side.
this.server_mod = subtype;
if (subtype === "lsb") {
this.low_cut = -3000;
this.high_cut = -300;
this.server_mod = "ssb";
}
else if (subtype === "usb") {
this.low_cut = 300;
this.high_cut = 3000;
this.server_mod = "ssb";
}
else if (subtype === "cw") {
this.low_cut = 700;
this.high_cut = 900;
this.server_mod = "ssb";
}
else if (subtype === "nfm") {
this.low_cut = -4000;
this.high_cut = 4000;
}
else if (subtype === "dmr" || subtype === "ysf") {
this.low_cut = -4000;
this.high_cut = 4000;
}
else if (subtype === "dstar" || subtype === "nxdn") {
this.low_cut = -3250;
this.high_cut = 3250;
}
else if (subtype === "am") {
this.low_cut = -4000;
this.high_cut = 4000;
}
this.wait_for_timer = false;
this.set_after = false;
this.set = function () { //set() is a wrapper to call doset(), but it ensures that doset won't execute more frequently than demodulator_response_time.
if (!this.wait_for_timer) {
this.doset(false);
this.set_after = false;
this.wait_for_timer = true;
var timeout_this = this; //http://stackoverflow.com/a/2130411
window.setTimeout(function () {
timeout_this.wait_for_timer = false;
if (timeout_this.set_after) timeout_this.set();
}, demodulator_response_time);
} else {
this.set_after = true;
}
};
this.doset = function (first_time) { //this function sends demodulator parameters to the server
var params = {
"low_cut": this.low_cut,
"high_cut": this.high_cut,
"offset_freq": this.offset_frequency
};
if (first_time) params.mod = this.server_mod;
ws.send(JSON.stringify({"type": "dspcontrol", "params": params}));
mkenvelopes(get_visible_freq_range());
};
this.doset(true); //we set parameters on object creation
//******* envelope object *******
// for drawing the filter envelope above scale
this.envelope.parent = this;
this.envelope.draw = function (visible_range) {
this.visible_range = visible_range;
this.drag_ranges = demod_envelope_draw(range,
center_freq + this.parent.offset_frequency + this.parent.low_cut,
center_freq + this.parent.offset_frequency + this.parent.high_cut,
this.color, center_freq + this.parent.offset_frequency);
};
this.envelope.dragged_range = Demodulator.draggable_ranges.none;
// event handlers
this.envelope.drag_start = function (x, key_modifiers) {
this.key_modifiers = key_modifiers;
this.dragged_range = demod_envelope_where_clicked(x, this.drag_ranges, key_modifiers);
this.drag_origin = {
x: x,
low_cut: this.parent.low_cut,
high_cut: this.parent.high_cut,
offset_frequency: this.parent.offset_frequency
};
return this.dragged_range !== Demodulator.draggable_ranges.none;
};
this.envelope.drag_move = function (x) {
var dr = Demodulator.draggable_ranges;
var new_value;
if (this.dragged_range === dr.none) return false; // we return if user is not dragging (us) at all
var freq_change = Math.round(this.visible_range.hps * (x - this.drag_origin.x));
//dragging the line in the middle of the filter envelope while holding Shift does emulate
//the BFO knob on radio equipment: moving offset frequency, while passband remains unchanged
//Filter passband moves in the opposite direction than dragged, hence the minus below.
var minus = (this.dragged_range === dr.bfo) ? -1 : 1;
//dragging any other parts of the filter envelope while holding Shift does emulate the PBS knob
//(PassBand Shift) on radio equipment: PBS does move the whole passband without moving the offset
//frequency.
if (this.dragged_range === dr.beginning || this.dragged_range === dr.bfo || this.dragged_range === dr.pbs) {
//we don't let low_cut go beyond its limits
if ((new_value = this.drag_origin.low_cut + minus * freq_change) < this.parent.filter.getLimits().low) return true;
//nor the filter passband be too small
if (this.parent.high_cut - new_value < this.parent.filter.min_passband) return true;
//sanity check to prevent GNU Radio "firdes check failed: fa <= fb"
if (new_value >= this.parent.high_cut) return true;
this.parent.low_cut = new_value;
}
if (this.dragged_range === dr.ending || this.dragged_range === dr.bfo || this.dragged_range === dr.pbs) {
//we don't let high_cut go beyond its limits
if ((new_value = this.drag_origin.high_cut + minus * freq_change) > this.parent.filter.getLimits().high) return true;
//nor the filter passband be too small
if (new_value - this.parent.low_cut < this.parent.filter.min_passband) return true;
//sanity check to prevent GNU Radio "firdes check failed: fa <= fb"
if (new_value <= this.parent.low_cut) return true;
this.parent.high_cut = new_value;
}
if (this.dragged_range === dr.anything_else || this.dragged_range === dr.bfo) {
//when any other part of the envelope is dragged, the offset frequency is changed (whole passband also moves with it)
new_value = this.drag_origin.offset_frequency + freq_change;
if (new_value > bandwidth / 2 || new_value < -bandwidth / 2) return true; //we don't allow tuning above Nyquist frequency :-)
this.parent.offset_frequency = new_value;
}
//now do the actual modifications:
mkenvelopes(this.visible_range);
this.parent.set();
//will have to change this when changing to multi-demodulator mode:
tunedFrequencyDisplay.setFrequency(center_freq + this.parent.offset_frequency);
return true;
};
this.envelope.drag_end = function () { //in this demodulator we've already changed values in the drag_move() function so we shouldn't do too much here.
demodulator_buttons_update();
var to_return = this.dragged_range !== Demodulator.draggable_ranges.none; //this part is required for cliking anywhere on the scale to set offset
this.dragged_range = Demodulator.draggable_ranges.none;
return to_return;
};
}
Demodulator_default_analog.prototype = new Demodulator();
function mkenvelopes(visible_range) //called from mkscale
{
scale_ctx.clearRect(0, 0, scale_ctx.canvas.width, 22); //clear the upper part of the canvas (where filter envelopes reside)
for (var i = 0; i < demodulators.length; i++) {
demodulators[i].envelope.draw(visible_range);
}
if (demodulators.length) secondary_demod_waterfall_set_zoom(demodulators[0].low_cut, demodulators[0].high_cut);
}
function demodulator_remove(which) {
demodulators[which].stop();
demodulators.splice(which, 1);
}
function demodulator_add(what) {
demodulators.push(what);
mkenvelopes(get_visible_freq_range());
}
var last_analog_demodulator_subtype = 'nfm';
var last_digital_demodulator_subtype = 'bpsk31';
function demodulator_analog_replace(subtype, for_digital) { //this function should only exist until the multi-demodulator capability is added
if (!(typeof for_digital !== "undefined" && for_digital && secondary_demod)) {
secondary_demod_close_window();
secondary_demod_listbox_update();
}
if (!demodulators || !demodulators[0] || demodulators[0].subtype !== subtype) {
last_analog_demodulator_subtype = subtype;
var temp_offset = 0;
if (demodulators.length) {
temp_offset = demodulators[0].offset_frequency;
demodulator_remove(0);
}
demodulator_add(new Demodulator_default_analog(temp_offset, subtype));
}
demodulator_buttons_update();
update_digitalvoice_panels("openwebrx-panel-metadata-" + subtype);
updateHash();
}
Demodulator.prototype.set_offset_frequency = function(to_what) {
if (to_what > bandwidth / 2 || to_what < -bandwidth / 2) return;
this.offset_frequency = Math.round(to_what);
this.set();
mkenvelopes(get_visible_freq_range());
tunedFrequencyDisplay.setFrequency(center_freq + to_what);
updateHash();
}
Demodulator.prototype.get_offset_frequency = function() {
return this.offset_frequency;
}
function waterfallWidth() {
return $('body').width();
}
// ========================================================
// =================== SCALE ROUTINES ===================
// ========================================================
var scale_ctx;
var scale_canvas;
var tunedFrequencyDisplay;
var mouseFrequencyDisplay;
function scale_setup() {
tunedFrequencyDisplay.setFrequency(canvas_get_frequency(window.innerWidth / 2));
scale_canvas = e("openwebrx-scale-canvas");
scale_ctx = scale_canvas.getContext("2d");
scale_canvas.addEventListener("mousedown", scale_canvas_mousedown, false);
scale_canvas.addEventListener("mousemove", scale_canvas_mousemove, false);
scale_canvas.addEventListener("mouseup", scale_canvas_mouseup, false);
resize_scale();
var frequency_container = e("openwebrx-frequency-container");
frequency_container.addEventListener("mousemove", frequency_container_mousemove, false);
}
var scale_canvas_drag_params = {
mouse_down: false,
drag: false,
start_x: 0,
key_modifiers: {shiftKey: false, altKey: false, ctrlKey: false}
};
function scale_canvas_mousedown(evt) {
scale_canvas_drag_params.mouse_down = true;
scale_canvas_drag_params.drag = false;
scale_canvas_drag_params.start_x = evt.pageX;
scale_canvas_drag_params.key_modifiers.shiftKey = evt.shiftKey;
scale_canvas_drag_params.key_modifiers.altKey = evt.altKey;
scale_canvas_drag_params.key_modifiers.ctrlKey = evt.ctrlKey;
evt.preventDefault();
}
function scale_offset_freq_from_px(x, visible_range) {
if (typeof visible_range === "undefined") visible_range = get_visible_freq_range();
return (visible_range.start + visible_range.bw * (x / waterfallWidth())) - center_freq;
}
function scale_canvas_mousemove(evt) {
var event_handled = false;
var i;
if (scale_canvas_drag_params.mouse_down && !scale_canvas_drag_params.drag && Math.abs(evt.pageX - scale_canvas_drag_params.start_x) > canvas_drag_min_delta)
//we can use the main drag_min_delta thing of the main canvas
{
scale_canvas_drag_params.drag = true;
//call the drag_start for all demodulators (and they will decide if they're dragged, based on X coordinate)
for (i = 0; i < demodulators.length; i++) event_handled |= demodulators[i].envelope.drag_start(evt.pageX, scale_canvas_drag_params.key_modifiers);
scale_canvas.style.cursor = "move";
}
else if (scale_canvas_drag_params.drag) {
//call the drag_move for all demodulators (and they will decide if they're dragged)
for (i = 0; i < demodulators.length; i++) event_handled |= demodulators[i].envelope.drag_move(evt.pageX);
if (!event_handled) demodulators[0].set_offset_frequency(scale_offset_freq_from_px(evt.pageX));
}
}
function frequency_container_mousemove(evt) {
var frequency = center_freq + scale_offset_freq_from_px(evt.pageX);
mouseFrequencyDisplay.setFrequency(frequency);
}
function scale_canvas_end_drag(x) {
scale_canvas.style.cursor = "default";
scale_canvas_drag_params.drag = false;
scale_canvas_drag_params.mouse_down = false;
var event_handled = false;
for (var i = 0; i < demodulators.length; i++) event_handled |= demodulators[i].envelope.drag_end();
if (!event_handled) demodulators[0].set_offset_frequency(scale_offset_freq_from_px(x));
}
function scale_canvas_mouseup(evt) {
scale_canvas_end_drag(evt.pageX);
}
function scale_px_from_freq(f, range) {
return Math.round(((f - range.start) / range.bw) * waterfallWidth());
}
function get_visible_freq_range() {
var out = {};
var fcalc = function (x) {
var canvasWidth = waterfallWidth() * zoom_levels[zoom_level];
return Math.round(((-zoom_offset_px + x) / canvasWidth) * bandwidth) + (center_freq - bandwidth / 2);
};
out.start = fcalc(0);
out.center = fcalc(waterfallWidth() / 2);
out.end = fcalc(waterfallWidth());
out.bw = out.end - out.start;
out.hps = out.bw / waterfallWidth();
return out;
}
var scale_markers_levels = [
{
"large_marker_per_hz": 10000000, //large
"estimated_text_width": 70,
"format": "{x} MHz",
"pre_divide": 1000000,
"decimals": 0
},
{
"large_marker_per_hz": 5000000,
"estimated_text_width": 70,
"format": "{x} MHz",
"pre_divide": 1000000,
"decimals": 0
},
{
"large_marker_per_hz": 1000000,
"estimated_text_width": 70,
"format": "{x} MHz",
"pre_divide": 1000000,
"decimals": 0
},
{
"large_marker_per_hz": 500000,
"estimated_text_width": 70,
"format": "{x} MHz",
"pre_divide": 1000000,
"decimals": 1
},
{
"large_marker_per_hz": 100000,
"estimated_text_width": 70,
"format": "{x} MHz",
"pre_divide": 1000000,
"decimals": 1
},
{
"large_marker_per_hz": 50000,
"estimated_text_width": 70,
"format": "{x} MHz",
"pre_divide": 1000000,
"decimals": 2
},
{
"large_marker_per_hz": 10000,
"estimated_text_width": 70,
"format": "{x} MHz",
"pre_divide": 1000000,
"decimals": 2
},
{
"large_marker_per_hz": 5000,
"estimated_text_width": 70,
"format": "{x} MHz",
"pre_divide": 1000000,
"decimals": 3
},
{
"large_marker_per_hz": 1000,
"estimated_text_width": 70,
"format": "{x} MHz",
"pre_divide": 1000000,
"decimals": 1
}
];
var scale_min_space_bw_texts = 50;
var scale_min_space_bw_small_markers = 7;
function get_scale_mark_spacing(range) {
var out = {};
var fcalc = function (freq) {
out.numlarge = (range.bw / freq);
out.large = waterfallWidth() / out.numlarge; //distance between large markers (these have text)
out.ratio = 5; //(ratio-1) small markers exist per large marker
out.small = out.large / out.ratio; //distance between small markers
if (out.small < scale_min_space_bw_small_markers) return false;
if (out.small / 2 >= scale_min_space_bw_small_markers && freq.toString()[0] !== "5") {
out.small /= 2;
out.ratio *= 2;
}
out.smallbw = freq / out.ratio;
return true;
};
for (var i = scale_markers_levels.length - 1; i >= 0; i--) {
var mp = scale_markers_levels[i];
if (!fcalc(mp.large_marker_per_hz)) continue;
//console.log(mp.large_marker_per_hz);
//console.log(out);
if (out.large - mp.estimated_text_width > scale_min_space_bw_texts) break;
}
out.params = mp;
return out;
}
var range;
function mkscale() {
//clear the lower part of the canvas (where frequency scale resides; the upper part is used by filter envelopes):
range = get_visible_freq_range();
mkenvelopes(range); //when scale changes we will always have to redraw filter envelopes, too
scale_ctx.clearRect(0, 22, scale_ctx.canvas.width, scale_ctx.canvas.height - 22);
scale_ctx.strokeStyle = "#fff";
scale_ctx.font = "bold 11px sans-serif";
scale_ctx.textBaseline = "top";
scale_ctx.fillStyle = "#fff";
var spacing = get_scale_mark_spacing(range);
//console.log(spacing);
var marker_hz = Math.ceil(range.start / spacing.smallbw) * spacing.smallbw;
var text_h_pos = 22 + 10 + ((is_firefox) ? 3 : 0);
var text_to_draw = '';
var ftext = function (f) {
text_to_draw = format_frequency(spacing.params.format, f, spacing.params.pre_divide, spacing.params.decimals);
};
var last_large;
var x;
for (; ;) {
x = scale_px_from_freq(marker_hz, range);
if (x > window.innerWidth) break;
scale_ctx.beginPath();
scale_ctx.moveTo(x, 22);
if (marker_hz % spacing.params.large_marker_per_hz === 0) { //large marker
if (typeof first_large === "undefined") var first_large = marker_hz;
last_large = marker_hz;
scale_ctx.lineWidth = 3.5;
scale_ctx.lineTo(x, 22 + 11);
ftext(marker_hz);
var text_measured = scale_ctx.measureText(text_to_draw);
scale_ctx.textAlign = "center";
//advanced text drawing begins
if (zoom_level === 0 && (range.start + spacing.smallbw * spacing.ratio > marker_hz) && (x < text_measured.width / 2)) { //if this is the first overall marker when zoomed out... and if it would be clipped off the screen...
if (scale_px_from_freq(marker_hz + spacing.smallbw * spacing.ratio, range) - text_measured.width >= scale_min_space_bw_texts) { //and if we have enough space to draw it correctly without clipping
scale_ctx.textAlign = "left";
scale_ctx.fillText(text_to_draw, 0, text_h_pos);
}
}
else if (zoom_level === 0 && (range.end - spacing.smallbw * spacing.ratio < marker_hz) && (x > window.innerWidth - text_measured.width / 2)) { // if this is the last overall marker when zoomed out... and if it would be clipped off the screen...
if (window.innerWidth - text_measured.width - scale_px_from_freq(marker_hz - spacing.smallbw * spacing.ratio, range) >= scale_min_space_bw_texts) { //and if we have enough space to draw it correctly without clipping
scale_ctx.textAlign = "right";
scale_ctx.fillText(text_to_draw, window.innerWidth, text_h_pos);
}
}
else scale_ctx.fillText(text_to_draw, x, text_h_pos); //draw text normally
}
else { //small marker
scale_ctx.lineWidth = 2;
scale_ctx.lineTo(x, 22 + 8);
}
marker_hz += spacing.smallbw;
scale_ctx.stroke();
}
if (zoom_level !== 0) { // if zoomed, we don't want the texts to disappear because their markers can't be seen
// on the left side
scale_ctx.textAlign = "center";
var f = first_large - spacing.smallbw * spacing.ratio;
x = scale_px_from_freq(f, range);
ftext(f);
var w = scale_ctx.measureText(text_to_draw).width;
if (x + w / 2 > 0) scale_ctx.fillText(text_to_draw, x, 22 + 10);
// on the right side
f = last_large + spacing.smallbw * spacing.ratio;
x = scale_px_from_freq(f, range);
ftext(f);
w = scale_ctx.measureText(text_to_draw).width;
if (x - w / 2 < window.innerWidth) scale_ctx.fillText(text_to_draw, x, 22 + 10);
}
}
function resize_scale() {
var ratio = window.devicePixelRatio || 1;
var w = window.innerWidth;
var h = 47;
scale_canvas.style.width = w + "px";
scale_canvas.style.height = h + "px";
w *= ratio;
h *= ratio;
scale_canvas.width = w;
scale_canvas.height = h;
scale_ctx.scale(ratio, ratio);
mkscale();
bookmarks.position();
}
function canvas_get_freq_offset(relativeX) {
var rel = (relativeX / canvases[0].clientWidth);
return Math.round((bandwidth * rel) - (bandwidth / 2));
}
function canvas_get_frequency(relativeX) {
return center_freq + canvas_get_freq_offset(relativeX);
}
function format_frequency(format, freq_hz, pre_divide, decimals) {
var out = format.replace("{x}", (freq_hz / pre_divide).toFixed(decimals));
var at = out.indexOf(".") + 4;
while (decimals > 3) {
out = out.substr(0, at) + "," + out.substr(at);
at += 4;
decimals -= 3;
}
return out;
}
var canvas_drag = false;
var canvas_drag_min_delta = 1;
var canvas_mouse_down = false;
var canvas_drag_last_x;
var canvas_drag_last_y;
var canvas_drag_start_x;
var canvas_drag_start_y;
function canvas_mousedown(evt) {
canvas_mouse_down = true;
canvas_drag = false;
canvas_drag_last_x = canvas_drag_start_x = evt.pageX;
canvas_drag_last_y = canvas_drag_start_y = evt.pageY;
evt.preventDefault(); //don't show text selection mouse pointer
}
function canvas_mousemove(evt) {
if (!waterfall_setup_done) return;
var relativeX = get_relative_x(evt);
if (canvas_mouse_down) {
if (!canvas_drag && Math.abs(evt.pageX - canvas_drag_start_x) > canvas_drag_min_delta) {
canvas_drag = true;
canvas_container.style.cursor = "move";
}
if (canvas_drag) {
var deltaX = canvas_drag_last_x - evt.pageX;
var dpx = range.hps * deltaX;
if (
!(zoom_center_rel + dpx > (bandwidth / 2 - waterfallWidth() * (1 - zoom_center_where) * range.hps)) &&
!(zoom_center_rel + dpx < -bandwidth / 2 + waterfallWidth() * zoom_center_where * range.hps)
) {
zoom_center_rel += dpx;
}
resize_canvases(false);
canvas_drag_last_x = evt.pageX;
canvas_drag_last_y = evt.pageY;
mkscale();
bookmarks.position();
}
} else {
mouseFrequencyDisplay.setFrequency(canvas_get_frequency(relativeX));
}
}
function canvas_container_mouseleave() {
canvas_end_drag();
}
function canvas_mouseup(evt) {
if (!waterfall_setup_done) return;
var relativeX = get_relative_x(evt);
if (!canvas_drag) {
demodulators[0].set_offset_frequency(canvas_get_freq_offset(relativeX));
}
else {
canvas_end_drag();
}
canvas_mouse_down = false;
}
function canvas_end_drag() {
canvas_container.style.cursor = "crosshair";
canvas_mouse_down = false;
}
function zoom_center_where_calc(screenposX) {
return screenposX / waterfallWidth();
}
function get_relative_x(evt) {
var relativeX = evt.offsetX || evt.layerX;
if ($(evt.target).closest(canvas_container).length) return relativeX;
// compensate for the frequency scale, since that is not resized by the browser.
var relatives = $(evt.target).closest('#openwebrx-frequency-container').map(function(){
return evt.pageX - this.offsetLeft;
});
if (relatives.length) relativeX = relatives[0];
return relativeX - zoom_offset_px;
}
function canvas_mousewheel(evt) {
if (!waterfall_setup_done) return;
var relativeX = get_relative_x(evt);
var dir = (evt.deltaY / Math.abs(evt.deltaY)) > 0;
zoom_step(dir, relativeX, zoom_center_where_calc(evt.pageX));
evt.preventDefault();
}
var zoom_max_level_hps = 33; //Hz/pixel
var zoom_levels_count = 14;
function get_zoom_coeff_from_hps(hps) {
var shown_bw = (window.innerWidth * hps);
return bandwidth / shown_bw;
}
var zoom_levels = [1];
var zoom_level = 0;
var zoom_offset_px = 0;
var zoom_center_rel = 0;
var zoom_center_where = 0;
var smeter_level = 0;
function mkzoomlevels() {
zoom_levels = [1];
var maxc = get_zoom_coeff_from_hps(zoom_max_level_hps);
if (maxc < 1) return;
// logarithmic interpolation
var zoom_ratio = Math.pow(maxc, 1 / zoom_levels_count);
for (var i = 1; i < zoom_levels_count; i++)
zoom_levels.push(Math.pow(zoom_ratio, i));
}
function zoom_step(out, where, onscreen) {
if ((out && zoom_level === 0) || (!out && zoom_level >= zoom_levels_count - 1)) return;
if (out) --zoom_level;
else ++zoom_level;
zoom_center_rel = canvas_get_freq_offset(where);
//console.log("zoom_step || zlevel: "+zoom_level.toString()+" zlevel_val: "+zoom_levels[zoom_level].toString()+" zoom_center_rel: "+zoom_center_rel.toString());
zoom_center_where = onscreen;
//console.log(zoom_center_where, zoom_center_rel, where);
resize_canvases(true);
mkscale();
bookmarks.position();
}
function zoom_set(level) {
if (!(level >= 0 && level <= zoom_levels.length - 1)) return;
level = parseInt(level);
zoom_level = level;
//zoom_center_rel=canvas_get_freq_offset(-canvases[0].offsetLeft+waterfallWidth()/2); //zoom to screen center instead of demod envelope
zoom_center_rel = demodulators[0].offset_frequency;
zoom_center_where = 0.5 + (zoom_center_rel / bandwidth); //this is a kind of hack
resize_canvases(true);
mkscale();
bookmarks.position();
}
function zoom_calc() {
var winsize = waterfallWidth();
var canvases_new_width = winsize * zoom_levels[zoom_level];
zoom_offset_px = -((canvases_new_width * (0.5 + zoom_center_rel / bandwidth)) - (winsize * zoom_center_where));
if (zoom_offset_px > 0) zoom_offset_px = 0;
if (zoom_offset_px < winsize - canvases_new_width)
zoom_offset_px = winsize - canvases_new_width;
}
var networkSpeedMeasurement;
var currentprofile;
var COMPRESS_FFT_PAD_N = 10; //should be the same as in csdr.c
function on_ws_recv(evt) {
if (typeof evt.data === 'string') {
// text messages
networkSpeedMeasurement.add(evt.data.length);
if (evt.data.substr(0, 16) === "CLIENT DE SERVER") {
divlog("Server acknowledged WebSocket connection.");
} else {
try {
var json = JSON.parse(evt.data);
switch (json.type) {
case "config":
var config = json['value'];
waterfall_colors = config['waterfall_colors'];
waterfall_min_level_default = config['waterfall_min_level'];
waterfall_max_level_default = config['waterfall_max_level'];
waterfall_auto_level_margin = config['waterfall_auto_level_margin'];
waterfallColorsDefault();
var initial_demodulator_params = {
mod: config['start_mod'],
offset_frequency: config['start_offset_freq']
};
bandwidth = config['samp_rate'];
center_freq = config['center_freq'];
fft_size = config['fft_size'];
fft_fps = config['fft_fps'];
var audio_compression = config['audio_compression'];
audioEngine.setCompression(audio_compression);
divlog("Audio stream is " + ((audio_compression === "adpcm") ? "compressed" : "uncompressed") + ".");
fft_compression = config['fft_compression'];
divlog("FFT stream is " + ((fft_compression === "adpcm") ? "compressed" : "uncompressed") + ".");
clientProgressBar.setMaxClients(config['max_clients']);
var sql = Number.isInteger(config['initial_squelch_level']) ? config['initial_squelch_level'] : -150;
$("#openwebrx-panel-squelch").val(sql);
updateSquelch();
waterfall_init();
initialize_demodulator(initial_demodulator_params);
bookmarks.loadLocalBookmarks();
waterfall_clear();
currentprofile = config['sdr_id'] + '|' + config['profile_id'];
$('#openwebrx-sdr-profiles-listbox').val(currentprofile);
break;
case "secondary_config":
var s = json['value'];
window.secondary_fft_size = s['secondary_fft_size'];
window.secondary_bw = s['secondary_bw'];
window.if_samp_rate = s['if_samp_rate'];
secondary_demod_init_canvases();
break;
case "receiver_details":
var r = json['value'];
e('webrx-rx-title').innerHTML = r['receiver_name'];
var query = encodeURIComponent(r['receiver_gps']['lat'] + ',' + r['receiver_gps']['lon']);
e('webrx-rx-desc').innerHTML = r['receiver_location'] + ' | Loc: ' + r['locator'] + ', ASL: ' + r['receiver_asl'] + ' m, <a href="https://www.google.com/maps/search/?api=1&query=' + query + '" target="_blank" onclick="dont_toggle_rx_photo();">[maps]</a>';
e('webrx-rx-photo-title').innerHTML = r['photo_title'];
e('webrx-rx-photo-desc').innerHTML = r['photo_desc'];
break;
case "smeter":
smeter_level = json['value'];
setSmeterAbsoluteValue(smeter_level);
break;
case "cpuusage":
cpuProgressBar.setUsage(json['value']);
break;
case "clients":
clientProgressBar.setClients(json['value']);
break;
case "profiles":
var listbox = e("openwebrx-sdr-profiles-listbox");
listbox.innerHTML = json['value'].map(function (profile) {
return '<option value="' + profile['id'] + '">' + profile['name'] + "</option>";
}).join("");
if (currentprofile) {
$('#openwebrx-sdr-profiles-listbox').val(currentprofile);
}
break;
case "features":
var features = json['value'];
for (var feature in features) {
if (features.hasOwnProperty(feature)) {
$('[data-feature="' + feature + '"]')[features[feature] ? "show" : "hide"]();
}
}
break;
case "metadata":
update_metadata(json['value']);
break;
case "js8_message":
$("#openwebrx-panel-js8-message").js8().pushMessage(json['value']);
break;
case "wsjt_message":
update_wsjt_panel(json['value']);
break;
case "dial_frequencies":
var as_bookmarks = json['value'].map(function (d) {
return {
name: d['mode'].toUpperCase(),
digital_modulation: d['mode'],
frequency: d['frequency']
};
});
bookmarks.replace_bookmarks(as_bookmarks, 'dial_frequencies');
break;
case "aprs_data":
update_packet_panel(json['value']);
break;
case "bookmarks":
bookmarks.replace_bookmarks(json['value'], "server");
break;
case "sdr_error":
divlog(json['value'], true);
var $overlay = $('#openwebrx-error-overlay');
$overlay.find('.errormessage').text(json['value']);
$overlay.show();
break;
case 'secondary_demod':
secondary_demod_push_data(json['value']);
break;
case 'log_message':
divlog(json['value'], true);
break;
case 'pocsag_data':
update_pocsag_panel(json['value']);
break;
case 'backoff':
divlog("Server is currently busy: " + json['reason'], true);
var $overlay = $('#openwebrx-error-overlay');
$overlay.find('.errormessage').text(json['reason']);
$overlay.show();
// set a higher reconnection timeout right away to avoid additional load
reconnect_timeout = 16000;
break;
default:
console.warn('received message of unknown type: ' + json['type']);
}
} catch (e) {
// don't lose exception
console.error(e)
}
}
} else if (evt.data instanceof ArrayBuffer) {
// binary messages
networkSpeedMeasurement.add(evt.data.byteLength);
var type = new Uint8Array(evt.data, 0, 1)[0];
var data = evt.data.slice(1);
var waterfall_i16;
var waterfall_f32;
var i;
switch (type) {
case 1:
// FFT data
if (fft_compression === "none") {
waterfall_add(new Float32Array(data));
} else if (fft_compression === "adpcm") {
fft_codec.reset();
waterfall_i16 = fft_codec.decode(new Uint8Array(data));
waterfall_f32 = new Float32Array(waterfall_i16.length - COMPRESS_FFT_PAD_N);
for (i = 0; i < waterfall_i16.length; i++) waterfall_f32[i] = waterfall_i16[i + COMPRESS_FFT_PAD_N] / 100;
waterfall_add(waterfall_f32);
}
break;
case 2:
// audio data
audioEngine.pushAudio(data);
break;
case 3:
// secondary FFT
if (fft_compression === "none") {
secondary_demod_waterfall_add(new Float32Array(data));
} else if (fft_compression === "adpcm") {
fft_codec.reset();
waterfall_i16 = fft_codec.decode(new Uint8Array(data));
waterfall_f32 = new Float32Array(waterfall_i16.length - COMPRESS_FFT_PAD_N);
for (i = 0; i < waterfall_i16.length; i++) waterfall_f32[i] = waterfall_i16[i + COMPRESS_FFT_PAD_N] / 100;
secondary_demod_waterfall_add(waterfall_f32);
}
break;
default:
console.warn('unknown type of binary message: ' + type)
}
}
}
function update_metadata(meta) {
var el;
if (meta['protocol']) switch (meta['protocol']) {
case 'DMR':
if (meta['slot']) {
el = $("#openwebrx-panel-metadata-dmr").find(".openwebrx-dmr-timeslot-panel").get(meta['slot']);
var id = "";
var name = "";
var target = "";
var group = false;
$(el)[meta['sync'] ? "addClass" : "removeClass"]("sync");
if (meta['sync'] && meta['sync'] === "voice") {
id = (meta['additional'] && meta['additional']['callsign']) || meta['source'] || "";
name = (meta['additional'] && meta['additional']['fname']) || "";
if (meta['type'] === "group") {
target = "Talkgroup: ";
group = true;
}
if (meta['type'] === "direct") target = "Direct: ";
target += meta['target'] || "";
$(el).addClass("active");
} else {
$(el).removeClass("active");
}
$(el).find(".openwebrx-dmr-id").text(id);
$(el).find(".openwebrx-dmr-name").text(name);
$(el).find(".openwebrx-dmr-target").text(target);
$(el).find(".openwebrx-meta-user-image")[group ? "addClass" : "removeClass"]("group");
} else {
clear_metadata();
}
break;
case 'YSF':
el = $("#openwebrx-panel-metadata-ysf");
var mode = " ";
var source = "";
var up = "";
var down = "";
if (meta['mode'] && meta['mode'] !== "") {
mode = "Mode: " + meta['mode'];
source = meta['source'] || "";
if (meta['lat'] && meta['lon'] && meta['source']) {
source = "<a class=\"openwebrx-maps-pin\" href=\"map?callsign=" + meta['source'] + "\" target=\"_blank\"></a>" + source;
}
up = meta['up'] ? "Up: " + meta['up'] : "";
down = meta['down'] ? "Down: " + meta['down'] : "";
$(el).find(".openwebrx-meta-slot").addClass("active");
} else {
$(el).find(".openwebrx-meta-slot").removeClass("active");
}
$(el).find(".openwebrx-ysf-mode").text(mode);
$(el).find(".openwebrx-ysf-source").html(source);
$(el).find(".openwebrx-ysf-up").text(up);
$(el).find(".openwebrx-ysf-down").text(down);
break;
} else {
clear_metadata();
}
}
function html_escape(input) {
return $('<div/>').text(input).html()
}
function update_wsjt_panel(msg) {
var $b = $('#openwebrx-panel-wsjt-message').find('tbody');
var t = new Date(msg['timestamp']);
var pad = function (i) {
return ('' + i).padStart(2, "0");
};
var linkedmsg = msg['msg'];
var matches;
if (['FT8', 'JT65', 'JT9', 'FT4'].indexOf(msg['mode']) >= 0) {
matches = linkedmsg.match(/(.*\s[A-Z0-9]+\s)([A-R]{2}[0-9]{2})$/);
if (matches && matches[2] !== 'RR73') {
linkedmsg = html_escape(matches[1]) + '<a href="map?locator=' + matches[2] + '" target="_blank">' + matches[2] + '</a>';
} else {
linkedmsg = html_escape(linkedmsg);
}
} else if (msg['mode'] === 'WSPR') {
matches = linkedmsg.match(/([A-Z0-9]*\s)([A-R]{2}[0-9]{2})(\s[0-9]+)/);
if (matches) {
linkedmsg = html_escape(matches[1]) + '<a href="map?locator=' + matches[2] + '" target="_blank">' + matches[2] + '</a>' + html_escape(matches[3]);
} else {
linkedmsg = html_escape(linkedmsg);
}
}
$b.append($(
'<tr data-timestamp="' + msg['timestamp'] + '">' +
'<td>' + pad(t.getUTCHours()) + pad(t.getUTCMinutes()) + pad(t.getUTCSeconds()) + '</td>' +
'<td class="decimal">' + msg['db'] + '</td>' +
'<td class="decimal">' + msg['dt'] + '</td>' +
'<td class="decimal freq">' + msg['freq'] + '</td>' +
'<td class="message">' + linkedmsg + '</td>' +
'</tr>'
));
$b.scrollTop($b[0].scrollHeight);
}
var digital_removal_interval;
// remove old wsjt messages in fixed intervals
function init_digital_removal_timer() {
if (digital_removal_interval) clearInterval(digital_removal_interval);
digital_removal_interval = setInterval(function () {
['#openwebrx-panel-wsjt-message', '#openwebrx-panel-packet-message'].forEach(function (root) {
var $elements = $(root + ' tbody tr');
// limit to 1000 entries in the list since browsers get laggy at some point
var toRemove = $elements.length - 1000;
if (toRemove <= 0) return;
$elements.slice(0, toRemove).remove();
});
}, 15000);
}
function update_packet_panel(msg) {
var $b = $('#openwebrx-panel-packet-message').find('tbody');
var pad = function (i) {
return ('' + i).padStart(2, "0");
};
if (msg.type && msg.type === 'thirdparty' && msg.data) {
msg = msg.data;
}
var source = msg.source;
if (msg.type) {
if (msg.type === 'item') {
source = msg.item;
}
if (msg.type === 'object') {
source = msg.object;
}
}
var timestamp = '';
if (msg.timestamp) {
var t = new Date(msg.timestamp);
timestamp = pad(t.getUTCHours()) + pad(t.getUTCMinutes()) + pad(t.getUTCSeconds())
}
var link = '';
var classes = [];
var styles = {};
var overlay = '';
var stylesToString = function (s) {
return $.map(s, function (value, key) {
return key + ':' + value + ';'
}).join('')
};
if (msg.symbol) {
classes.push('aprs-symbol');
classes.push('aprs-symboltable-' + (msg.symbol.table === '/' ? 'normal' : 'alternate'));
styles['background-position-x'] = -(msg.symbol.index % 16) * 15 + 'px';
styles['background-position-y'] = -Math.floor(msg.symbol.index / 16) * 15 + 'px';
if (msg.symbol.table !== '/' && msg.symbol.table !== '\\') {
var s = {};
s['background-position-x'] = -(msg.symbol.tableindex % 16) * 15 + 'px';
s['background-position-y'] = -Math.floor(msg.symbol.tableindex / 16) * 15 + 'px';
overlay = '<div class="aprs-symbol aprs-symboltable-overlay" style="' + stylesToString(s) + '"></div>';
}
} else if (msg.lat && msg.lon) {
classes.push('openwebrx-maps-pin');
}
var attrs = [
'class="' + classes.join(' ') + '"',
'style="' + stylesToString(styles) + '"'
].join(' ');
if (msg.lat && msg.lon) {
link = '<a ' + attrs + ' href="map?callsign=' + source + '" target="_blank">' + overlay + '</a>';
} else {
link = '<div ' + attrs + '>' + overlay + '</div>'
}
$b.append($(
'<tr>' +
'<td>' + timestamp + '</td>' +
'<td class="callsign">' + source + '</td>' +
'<td class="coord">' + link + '</td>' +
'<td class="message">' + (msg.comment || msg.message || '') + '</td>' +
'</tr>'
));
$b.scrollTop($b[0].scrollHeight);
}
function update_pocsag_panel(msg) {
var $b = $('#openwebrx-panel-pocsag-message').find('tbody');
$b.append($(
'<tr>' +
'<td class="address">' + msg.address + '</td>' +
'<td class="message">' + msg.message + '</td>' +
'</tr>'
));
$b.scrollTop($b[0].scrollHeight);
}
function update_digitalvoice_panels(showing) {
$(".openwebrx-meta-panel").each(function (_, p) {
toggle_panel(p.id, p.id === showing);
});
clear_metadata();
}
function clear_metadata() {
$(".openwebrx-meta-panel .openwebrx-meta-autoclear").text("");
$(".openwebrx-meta-slot").removeClass("active").removeClass("sync");
$(".openwebrx-dmr-timeslot-panel").removeClass("muted");
}
var waterfall_measure_minmax = false;
var waterfall_measure_minmax_now = false;
var waterfall_measure_minmax_min = 1e100;
var waterfall_measure_minmax_max = -1e100;
function waterfall_measure_minmax_do(what) {
// this is based on an oversampling factor of about 1,25
var ignored = .1 * what.length;
var data = what.slice(ignored, -ignored);
waterfall_measure_minmax_min = Math.min(waterfall_measure_minmax_min, Math.min.apply(Math, data));
waterfall_measure_minmax_max = Math.max(waterfall_measure_minmax_max, Math.max.apply(Math, data));
}
function on_ws_opened() {
$('#openwebrx-error-overlay').hide();
ws.send("SERVER DE CLIENT client=openwebrx.js type=receiver");
divlog("WebSocket opened to " + ws.url);
if (!networkSpeedMeasurement) {
networkSpeedMeasurement = new Measurement();
networkSpeedMeasurement.report(60000, 1000, function(rate){
networkSpeedProgressBar.setSpeed(rate);
});
} else {
networkSpeedMeasurement.reset();
}
reconnect_timeout = false;
ws.send(JSON.stringify({
"type": "connectionproperties",
"params": {"output_rate": audioEngine.getOutputRate()}
}));
ws.send(JSON.stringify({
"type": "dspcontrol",
"action": "start"
}));
}
var was_error = 0;
function divlog(what, is_error) {
is_error = !!is_error;
was_error |= is_error;
if (is_error) {
what = "<span class=\"webrx-error\">" + what + "</span>";
toggle_panel("openwebrx-panel-log", true); //show panel if any error is present
}
e("openwebrx-debugdiv").innerHTML += what + "<br />";
var nano = $('.nano');
nano.nanoScroller();
nano.nanoScroller({scroll: 'bottom'});
}
var volumeBeforeMute = 100.0;
var mute = false;
// Optimalise these if audio lags or is choppy:
var audio_buffer_maximal_length_sec = 1; //actual number of samples are calculated from sample rate
function webrx_set_param(what, value) {
var params = {};
params[what] = value;
ws.send(JSON.stringify({"type": "dspcontrol", "params": params}));
}
function parseHash() {
if (!window.location.hash) {
return {};
}
return 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;
}, {});
}
function validateHash() {
var params = parseHash();
params = Object.keys(params).filter(function(key) {
if (key == 'freq' || key == 'mod') {
return params.freq && Math.abs(params.freq - center_freq) < bandwidth;
}
return true;
}).reduce(function(p, key) {
p[key] = params[key];
return p;
}, {});
if (params['freq']) {
params['offset_frequency'] = params['freq'] - center_freq;
delete params['freq'];
}
return params;
}
function updateHash() {
var demod = demodulators[0];
if (!demod) return;
window.location.hash = $.map({
freq: demod.get_offset_frequency() + center_freq,
mod: demod.subtype,
secondary_mod: secondary_demod
}, function(value, key){
if (!value) return undefined;
return key + '=' + value;
}).filter(function(v) {
return !!v;
}).join(',');
}
function onAudioStart(success, apiType){
divlog('Web Audio API succesfully initialized, using ' + apiType + ' API, sample rate: ' + audioEngine.getSampleRate() + " Hz");
// canvas_container is set after waterfall_init() has been called. we cannot initialize before.
if (canvas_container) initialize_demodulator();
//hide log panel in a second (if user has not hidden it yet)
window.setTimeout(function () {
toggle_panel("openwebrx-panel-log", !!was_error);
}, 2000);
//Synchronise volume with slider
updateVolume();
}
function initialize_demodulator(initialParams) {
mkscale();
var params = $.extend(initialParams || {}, validateHash());
if (params.secondary_mod) {
demodulator_digital_replace(params.secondary_mod);
} else if (params.mod) {
demodulator_analog_replace(params.mod);
}
if (params.offset_frequency) {
demodulators[0].set_offset_frequency(params.offset_frequency);
}
}
var reconnect_timeout = false;
function on_ws_closed() {
if (reconnect_timeout) {
// max value: roundabout 8 and a half minutes
reconnect_timeout = Math.min(reconnect_timeout * 2, 512000);
} else {
// initial value: 1s
reconnect_timeout = 1000;
}
divlog("WebSocket has closed unexpectedly. Attempting to reconnect in " + reconnect_timeout / 1000 + " seconds...", 1);
setTimeout(open_websocket, reconnect_timeout);
}
function on_ws_error() {
divlog("WebSocket error.", 1);
}
var ws;
function open_websocket() {
var protocol = window.location.protocol.match(/https/) ? 'wss' : 'ws';
var href = window.location.href;
var index = href.lastIndexOf('/');
if (index > 0) {
href = href.substr(0, index + 1);
}
href = href.split("://")[1];
href = protocol + "://" + href;
if (!href.endsWith('/')) {
href += '/';
}
var ws_url = href + "ws/";
if (!("WebSocket" in window))
divlog("Your browser does not support WebSocket, which is required for WebRX to run. Please upgrade to a HTML5 compatible browser.");
ws = new WebSocket(ws_url);
ws.onopen = on_ws_opened;
ws.onmessage = on_ws_recv;
ws.onclose = on_ws_closed;
ws.binaryType = "arraybuffer";
window.onbeforeunload = function () { //http://stackoverflow.com/questions/4812686/closing-websocket-correctly-html5-javascript
ws.onclose = function () {
};
ws.close();
};
ws.onerror = on_ws_error;
}
function waterfall_mkcolor(db_value, waterfall_colors_arg) {
if (typeof waterfall_colors_arg === 'undefined') waterfall_colors_arg = waterfall_colors;
if (db_value < waterfall_min_level) db_value = waterfall_min_level;
if (db_value > waterfall_max_level) db_value = waterfall_max_level;
var full_scale = waterfall_max_level - waterfall_min_level;
var relative_value = db_value - waterfall_min_level;
var value_percent = relative_value / full_scale;
var percent_for_one_color = 1 / (waterfall_colors_arg.length - 1);
var index = Math.floor(value_percent / percent_for_one_color);
var remain = (value_percent - percent_for_one_color * index) / percent_for_one_color;
return color_between(waterfall_colors_arg[index + 1], waterfall_colors_arg[index], remain);
}
function color_between(first, second, percent) {
var output = 0;
for (var i = 0; i < 4; i++) {
var add = ((((first & (0xff << (i * 8))) >>> 0) * percent) + (((second & (0xff << (i * 8))) >>> 0) * (1 - percent))) & (0xff << (i * 8));
output |= add >>> 0;
}
return output >>> 0;
}
var canvas_context;
var canvases = [];
var canvas_default_height = 200;
var canvas_container;
var canvas_actual_line;
function add_canvas() {
var new_canvas = document.createElement("canvas");
new_canvas.width = fft_size;
new_canvas.height = canvas_default_height;
canvas_actual_line = canvas_default_height - 1;
new_canvas.openwebrx_top = (-canvas_default_height + 1);
new_canvas.style.top = new_canvas.openwebrx_top.toString() + "px";
canvas_context = new_canvas.getContext("2d");
canvas_container.appendChild(new_canvas);
canvases.push(new_canvas);
while (canvas_container && canvas_container.clientHeight + canvas_default_height * 2 < canvases.length * canvas_default_height) {
var c = canvases.shift();
if (!c) break;
canvas_container.removeChild(c);
}
}
function init_canvas_container() {
canvas_container = e("webrx-canvas-container");
canvas_container.addEventListener("mouseleave", canvas_container_mouseleave, false);
canvas_container.addEventListener("mousemove", canvas_mousemove, false);
canvas_container.addEventListener("mouseup", canvas_mouseup, false);
canvas_container.addEventListener("mousedown", canvas_mousedown, false);
canvas_container.addEventListener("wheel", canvas_mousewheel, false);
var frequency_container = e("openwebrx-frequency-container");
frequency_container.addEventListener("wheel", canvas_mousewheel, false);
add_canvas();
}
canvas_maxshift = 0;
function shift_canvases() {
canvases.forEach(function (p) {
p.style.top = (p.openwebrx_top++).toString() + "px";
});
canvas_maxshift++;
}
function resize_canvases(zoom) {
if (typeof zoom === "undefined") zoom = false;
if (!zoom) mkzoomlevels();
zoom_calc();
$('#webrx-canvas-container').css({
width: waterfallWidth() * zoom_levels[zoom_level] + 'px',
left: zoom_offset_px + "px"
});
}
function waterfall_init() {
init_canvas_container();
resize_canvases();
scale_setup();
mkzoomlevels();
waterfall_setup_done = 1;
}
function waterfall_add(data) {
if (!waterfall_setup_done) return;
var w = fft_size;
if (waterfall_measure_minmax) waterfall_measure_minmax_do(data);
if (waterfall_measure_minmax_now) {
waterfall_measure_minmax_do(data);
waterfall_measure_minmax_now = false;
waterfallColorsAuto();
}
//Add line to waterfall image
var oneline_image = canvas_context.createImageData(w, 1);
for (var x = 0; x < w; x++) {
var color = waterfall_mkcolor(data[x]);
for (i = 0; i < 4; i++)
oneline_image.data[x * 4 + i] = ((color >>> 0) >> ((3 - i) * 8)) & 0xff;
}
//Draw image
canvas_context.putImageData(oneline_image, 0, canvas_actual_line--);
shift_canvases();
if (canvas_actual_line < 0) add_canvas();
}
function waterfall_clear() {
while (canvases.length) //delete all canvases
{
var x = canvases.shift();
x.parentNode.removeChild(x);
}
add_canvas();
}
function openwebrx_resize() {
resize_canvases();
resize_scale();
}
function init_header() {
$('#openwebrx-main-buttons').find('[data-toggle-panel]').click(function () {
toggle_panel($(this).data('toggle-panel'));
});
}
var audioBufferProgressBar;
var networkSpeedProgressBar;
var audioSpeedProgressBar;
var audioOutputProgressBar;
var clientProgressBar;
var cpuProgressBar;
function initProgressBars() {
audioBufferProgressBar = new AudioBufferProgressBar($('#openwebrx-bar-audio-buffer'), audioEngine.getSampleRate());
networkSpeedProgressBar = new NetworkSpeedProgressBar($('#openwebrx-bar-network-speed'));
audioSpeedProgressBar = new AudioSpeedProgressBar($('#openwebrx-bar-audio-speed'));
audioOutputProgressBar = new AudioOutputProgressBar($('#openwebrx-bar-audio-output'), audioEngine.getSampleRate());
clientProgressBar = new ClientsProgressBar($('#openwebrx-bar-clients'));
cpuProgressBar = new CpuProgressBar($('#openwebrx-bar-server-cpu'));
}
function audioReporter(stats) {
if (typeof(stats.buffersize) !== 'undefined') {
audioBufferProgressBar.setBuffersize(stats.buffersize);
}
if (typeof(stats.audioByteRate) !== 'undefined') {
audioSpeedProgressBar.setSpeed(stats.audioByteRate * 8);
}
if (typeof(stats.audioRate) !== 'undefined') {
audioOutputProgressBar.setAudioRate(stats.audioRate);
}
}
var bookmarks;
var audioEngine;
function openwebrx_init() {
audioEngine = new AudioEngine(audio_buffer_maximal_length_sec, audioReporter);
$overlay = $('#openwebrx-autoplay-overlay');
$overlay.on('click', playButtonClick);
if (!audioEngine.isAllowed()) {
$overlay.show();
} else {
audioEngine.start(onAudioStart);
}
fft_codec = new ImaAdpcmCodec();
initProgressBars();
init_rx_photo();
open_websocket();
secondary_demod_init();
digimodes_init();
initPanels();
tunedFrequencyDisplay = new TuneableFrequencyDisplay($('#webrx-actual-freq'));
tunedFrequencyDisplay.onFrequencyChange(function(f) {
demodulators[0].set_offset_frequency(f - center_freq);
});
mouseFrequencyDisplay = new FrequencyDisplay($('#webrx-mouse-freq'));
window.addEventListener("resize", openwebrx_resize);
init_header();
bookmarks = new BookmarkBar();
initSliders();
window.addEventListener('hashchange', function() {
initialize_demodulator();
});
}
function initSliders() {
$('#openwebrx-panel-receiver').on('wheel', 'input[type=range]', function(ev){
var $slider = $(this);
if (!$slider.attr('step')) return;
var val = Number($slider.val());
var step = Number($slider.attr('step'));
if (ev.originalEvent.deltaY > 0) {
step *= -1;
}
$slider.val(val + step);
$slider.trigger('change');
});
}
function digimodes_init() {
// initialze DMR timeslot muting
$('.openwebrx-dmr-timeslot-panel').click(function (e) {
$(e.currentTarget).toggleClass("muted");
update_dmr_timeslot_filtering();
});
}
function update_dmr_timeslot_filtering() {
var filter = $('.openwebrx-dmr-timeslot-panel').map(function (index, el) {
return (!$(el).hasClass("muted")) << index;
}).toArray().reduce(function (acc, v) {
return acc | v;
}, 0);
webrx_set_param("dmr_filter", filter);
}
function playButtonClick() {
//On iOS, we can only start audio from a click or touch event.
audioEngine.start(onAudioStart);
var $overlay = $('#openwebrx-autoplay-overlay');
$overlay.css('opacity', 0);
$overlay.on('transitionend', function() {
$overlay.hide();
});
}
var rt = function (s, n) {
return s.replace(/[a-zA-Z]/g, function (c) {
return String.fromCharCode((c <= "Z" ? 90 : 122) >= (c = c.charCodeAt(0) + n) ? c : c - 26);
});
};
// ========================================================
// ======================= PANELS =======================
// ========================================================
function panel_displayed(el){
return !(el.style && el.style.display && el.style.display === 'none')
}
function toggle_panel(what, on) {
var item = $('#' + what)[0];
if (!item) return;
var displayed = panel_displayed(item);
if (typeof on !== "undefined" && displayed === on) {
return;
}
if (item.openwebrxDisableClick) return;
if (displayed) {
item.movement = 'collapse';
item.style.transform = "perspective(600px) rotateX(90deg)";
item.style.transitionProperty = 'transform';
} else {
item.movement = 'expand';
item.style.display = 'block';
setTimeout(function(){
item.style.transitionProperty = 'transform';
item.style.transform = 'perspective(600px) rotateX(0deg)';
}, 20);
}
item.style.transitionDuration = "600ms";
item.style.transitionDelay = "0ms";
item.openwebrxDisableClick = true;
}
function first_show_panel(panel) {
panel.style.transitionDuration = 0;
panel.style.transitionDelay = 0;
var rotx = (Math.random() > 0.5) ? -90 : 90;
var roty = 0;
if (Math.random() > 0.5) {
var rottemp = rotx;
rotx = roty;
roty = rottemp;
}
if (rotx !== 0 && Math.random() > 0.5) rotx = 270;
panel.style.transform = "perspective(600px) rotateX(%1deg) rotateY(%2deg)"
.replace("%1", rotx.toString()).replace("%2", roty.toString());
window.setTimeout(function () {
panel.style.transitionDuration = "600ms";
panel.style.transitionDelay = (Math.floor(Math.random() * 500)).toString() + "ms";
panel.style.transform = "perspective(600px) rotateX(0deg) rotateY(0deg)";
}, 1);
}
function initPanels() {
$('#openwebrx-panels-container').find('.openwebrx-panel').each(function(){
var el = this;
el.openwebrxPanelTransparent = (!!el.dataset.panelTransparent);
el.addEventListener('transitionend', function(ev){
if (ev.target !== el) return;
el.openwebrxDisableClick = false;
el.style.transitionDuration = null;
el.style.transitionDelay = null;
el.style.transitionProperty = null;
if (el.movement && el.movement === 'collapse') {
el.style.display = 'none';
}
});
if (panel_displayed(el)) first_show_panel(el);
});
}
function demodulator_buttons_update() {
$(".openwebrx-demodulator-button").removeClass("highlighted");
if (!demodulators.length) return;
if (secondary_demod) {
$("#openwebrx-button-dig").addClass("highlighted");
$('#openwebrx-secondary-demod-listbox').val(secondary_demod);
} else switch (demodulators[0].subtype) {
case "lsb":
case "usb":
case "cw":
if (demodulators[0].high_cut - demodulators[0].low_cut < 300)
$("#openwebrx-button-cw").addClass("highlighted");
else {
if (demodulators[0].high_cut < 0)
$("#openwebrx-button-lsb").addClass("highlighted");
else if (demodulators[0].low_cut > 0)
$("#openwebrx-button-usb").addClass("highlighted");
else $("#openwebrx-button-lsb, #openwebrx-button-usb").addClass("highlighted");
}
break;
default:
var mod = demodulators[0].subtype;
$("#openwebrx-button-" + mod).addClass("highlighted");
break;
}
}
function demodulator_analog_replace_last() {
demodulator_analog_replace(last_analog_demodulator_subtype);
}
/*
_____ _ _ _
| __ \(_) (_) | |
| | | |_ __ _ _ _ __ ___ ___ __| | ___ ___
| | | | |/ _` | | '_ ` _ \ / _ \ / _` |/ _ \/ __|
| |__| | | (_| | | | | | | | (_) | (_| | __/\__ \
|_____/|_|\__, |_|_| |_| |_|\___/ \__,_|\___||___/
__/ |
|___/
*/
var secondary_demod = false;
var secondary_demod_fft_offset_db = 30; //need to calculate that later
var secondary_demod_canvases_initialized = false;
var secondary_demod_listbox_updating = false;
var secondary_demod_channel_freq = 1000;
var secondary_demod_waiting_for_set = false;
var secondary_demod_low_cut;
var secondary_demod_high_cut;
var secondary_demod_mousedown = false;
var secondary_demod_canvas_width;
var secondary_demod_canvas_left;
var secondary_demod_canvas_container;
var secondary_demod_current_canvas_actual_line;
var secondary_demod_current_canvas_context;
var secondary_demod_current_canvas_index;
var secondary_demod_canvases;
function demodulator_digital_replace_last() {
demodulator_digital_replace(last_digital_demodulator_subtype);
secondary_demod_listbox_update();
}
function demodulator_digital_replace(subtype) {
if (secondary_demod === subtype) return;
switch (subtype) {
case "bpsk31":
case "bpsk63":
case "rtty":
case "ft8":
case "jt65":
case "jt9":
case "ft4":
case "js8":
secondary_demod_start(subtype);
demodulator_analog_replace('usb', true);
break;
case "wspr":
secondary_demod_start(subtype);
demodulator_analog_replace('usb', true);
// WSPR only samples between 1400 and 1600 Hz
demodulators[0].low_cut = 1350;
demodulators[0].high_cut = 1650;
demodulators[0].set();
break;
case "packet":
secondary_demod_start(subtype);
demodulator_analog_replace('nfm', true);
break;
case "pocsag":
secondary_demod_start(subtype);
demodulator_analog_replace('nfm', true);
demodulators[0].low_cut = -6000;
demodulators[0].high_cut = 6000;
demodulators[0].set();
break;
}
demodulator_buttons_update();
$('#openwebrx-panel-digimodes').attr('data-mode', subtype);
toggle_panel("openwebrx-panel-digimodes", true);
toggle_panel("openwebrx-panel-wsjt-message", ['ft8', 'wspr', 'jt65', 'jt9', 'ft4'].indexOf(subtype) >= 0);
toggle_panel("openwebrx-panel-js8-message", subtype == "js8");
toggle_panel("openwebrx-panel-packet-message", subtype === "packet");
toggle_panel("openwebrx-panel-pocsag-message", subtype === "pocsag");
updateHash();
}
function secondary_demod_create_canvas() {
var new_canvas = document.createElement("canvas");
new_canvas.width = secondary_fft_size;
new_canvas.height = $(secondary_demod_canvas_container).height();
new_canvas.style.width = $(secondary_demod_canvas_container).width() + "px";
new_canvas.style.height = $(secondary_demod_canvas_container).height() + "px";
secondary_demod_current_canvas_actual_line = new_canvas.height - 1;
$(secondary_demod_canvas_container).children().last().before(new_canvas);
return new_canvas;
}
function secondary_demod_remove_canvases() {
$(secondary_demod_canvas_container).children("canvas").remove();
}
function secondary_demod_init_canvases() {
secondary_demod_remove_canvases();
secondary_demod_canvases = [];
secondary_demod_canvases.push(secondary_demod_create_canvas());
secondary_demod_canvases.push(secondary_demod_create_canvas());
secondary_demod_canvases[0].openwebrx_top = -$(secondary_demod_canvas_container).height();
secondary_demod_canvases[1].openwebrx_top = 0;
secondary_demod_canvases_update_top();
secondary_demod_current_canvas_context = secondary_demod_canvases[0].getContext("2d");
secondary_demod_current_canvas_actual_line = $(secondary_demod_canvas_container).height() - 1;
secondary_demod_current_canvas_index = 0;
secondary_demod_canvases_initialized = true;
mkscale(); //so that the secondary waterfall zoom level will be initialized
}
function secondary_demod_canvases_update_top() {
for (var i = 0; i < 2; i++) secondary_demod_canvases[i].style.top = secondary_demod_canvases[i].openwebrx_top + "px";
}
function secondary_demod_swap_canvases() {
secondary_demod_canvases[0 + !secondary_demod_current_canvas_index].openwebrx_top -= $(secondary_demod_canvas_container).height() * 2;
secondary_demod_current_canvas_index = 0 + !secondary_demod_current_canvas_index;
secondary_demod_current_canvas_context = secondary_demod_canvases[secondary_demod_current_canvas_index].getContext("2d");
secondary_demod_current_canvas_actual_line = $(secondary_demod_canvas_container).height() - 1;
}
function secondary_demod_init() {
secondary_demod_canvas_container = $("#openwebrx-digimode-canvas-container")[0];
$(secondary_demod_canvas_container)
.mousemove(secondary_demod_canvas_container_mousemove)
.mouseup(secondary_demod_canvas_container_mouseup)
.mousedown(secondary_demod_canvas_container_mousedown)
.mouseenter(secondary_demod_canvas_container_mousein)
.mouseleave(secondary_demod_canvas_container_mouseleave);
init_digital_removal_timer();
}
function secondary_demod_start(subtype) {
secondary_demod_canvases_initialized = false;
ws.send(JSON.stringify({"type": "dspcontrol", "params": {"secondary_mod": subtype}}));
secondary_demod = subtype;
}
function secondary_demod_stop() {
ws.send(JSON.stringify({"type": "dspcontrol", "params": {"secondary_mod": false}}));
secondary_demod = false;
}
function secondary_demod_push_data(x) {
x = Array.from(x).filter(function (y) {
var c = y.charCodeAt(0);
return (c === 10 || (c >= 32 && c <= 126));
}).map(function (y) {
if (y === "&")
return "&amp;";
if (y === "<") return "&lt;";
if (y === ">") return "&gt;";
if (y === " ") return "&nbsp;";
return y;
}).map(function (y) {
if (y === "\n")
return "<br />";
return "<span class=\"part\">" + y + "</span>";
}).join("");
$("#openwebrx-cursor-blink").before(x);
}
function secondary_demod_close_window() {
secondary_demod_stop();
toggle_panel("openwebrx-panel-digimodes", false);
toggle_panel("openwebrx-panel-wsjt-message", false);
toggle_panel("openwebrx-panel-packet-message", false);
toggle_panel("openwebrx-panel-pocsag-message", false);
toggle_panel("openwebrx-panel-js8-message", false);
}
function secondary_demod_waterfall_add(data) {
if (!secondary_demod) return;
var w = secondary_fft_size;
//Add line to waterfall image
var oneline_image = secondary_demod_current_canvas_context.createImageData(w, 1);
for (var x = 0; x < w; x++) {
var color = waterfall_mkcolor(data[x] + secondary_demod_fft_offset_db);
for (var i = 0; i < 4; i++) oneline_image.data[x * 4 + i] = ((color >>> 0) >> ((3 - i) * 8)) & 0xff;
}
//Draw image
secondary_demod_current_canvas_context.putImageData(oneline_image, 0, secondary_demod_current_canvas_actual_line--);
secondary_demod_canvases.map(function (x) {
x.openwebrx_top += 1;
})
;
secondary_demod_canvases_update_top();
if (secondary_demod_current_canvas_actual_line < 0) secondary_demod_swap_canvases();
}
function secondary_demod_listbox_changed() {
if (secondary_demod_listbox_updating) return;
var sdm = $("#openwebrx-secondary-demod-listbox")[0].value;
if (sdm === "none") {
demodulator_analog_replace_last();
} else {
demodulator_digital_replace(sdm);
}
}
function secondary_demod_listbox_update() {
secondary_demod_listbox_updating = true;
$("#openwebrx-secondary-demod-listbox").val((secondary_demod) ? secondary_demod : "none");
secondary_demod_listbox_updating = false;
}
function secondary_demod_update_marker() {
var width = Math.max((secondary_bw / (if_samp_rate / 2)) * secondary_demod_canvas_width, 5);
var center_at = (secondary_demod_channel_freq / (if_samp_rate / 2)) * secondary_demod_canvas_width + secondary_demod_canvas_left;
var left = center_at - width / 2;
$("#openwebrx-digimode-select-channel").width(width).css("left", left + "px")
}
function secondary_demod_update_channel_freq_from_event(evt) {
if (typeof evt !== "undefined") {
var relativeX = (evt.offsetX) ? evt.offsetX : evt.layerX;
secondary_demod_channel_freq = secondary_demod_low_cut +
(relativeX / $(secondary_demod_canvas_container).width()) * (secondary_demod_high_cut - secondary_demod_low_cut);
}
if (!secondary_demod_waiting_for_set) {
secondary_demod_waiting_for_set = true;
window.setTimeout(function () {
ws.send(JSON.stringify({
"type": "dspcontrol",
"params": {"secondary_offset_freq": Math.floor(secondary_demod_channel_freq)}
}));
secondary_demod_waiting_for_set = false;
},
50
)
;
}
secondary_demod_update_marker();
}
function secondary_demod_canvas_container_mousein() {
$("#openwebrx-digimode-select-channel").css("opacity", "0.7"); //.css("border-width", "1px");
}
function secondary_demod_canvas_container_mouseleave() {
$("#openwebrx-digimode-select-channel").css("opacity", "0");
}
function secondary_demod_canvas_container_mousemove(evt) {
if (secondary_demod_mousedown) secondary_demod_update_channel_freq_from_event(evt);
}
function secondary_demod_canvas_container_mousedown(evt) {
if (evt.which === 1) secondary_demod_mousedown = true;
}
function secondary_demod_canvas_container_mouseup(evt) {
if (evt.which === 1) secondary_demod_mousedown = false;
secondary_demod_update_channel_freq_from_event(evt);
}
function secondary_demod_waterfall_set_zoom(low_cut, high_cut) {
if (!secondary_demod || !secondary_demod_canvases_initialized) return;
if (low_cut < 0 && high_cut < 0) {
var hctmp = high_cut;
var lctmp = low_cut;
low_cut = -hctmp;
high_cut = -lctmp;
}
else if (low_cut < 0 && high_cut > 0) {
high_cut = Math.max(Math.abs(high_cut), Math.abs(low_cut));
low_cut = 0;
}
secondary_demod_low_cut = low_cut;
secondary_demod_high_cut = high_cut;
var shown_bw = high_cut - low_cut;
secondary_demod_canvas_width = $(secondary_demod_canvas_container).width() * (if_samp_rate / 2) / shown_bw;
secondary_demod_canvas_left = -secondary_demod_canvas_width * (low_cut / (if_samp_rate / 2));
//console.log("setzoom", secondary_demod_canvas_width, secondary_demod_canvas_left, low_cut, high_cut);
secondary_demod_canvases.map(function (x) {
$(x).css("left", secondary_demod_canvas_left + "px").css("width", secondary_demod_canvas_width + "px");
})
;
secondary_demod_update_channel_freq_from_event();
}
function sdr_profile_changed() {
var value = $('#openwebrx-sdr-profiles-listbox').val();
ws.send(JSON.stringify({type: "selectprofile", params: {profile: value}}));
}