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Live Spectrogram Improvements

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This commit is contained in:
ehpersonal38
2022-05-27 13:15:24 -04:00
parent eb571354e0
commit 7f36f09b9a
1 changed files with 74 additions and 12 deletions
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scripts/spectrogram.php
+74 -12
View File
@@ -1,3 +1,36 @@
<?php
if(isset($_GET['ajax_csv'])) {
$user = shell_exec("awk -F: '/1000/{print $1}' /etc/passwd");
$home = shell_exec("awk -F: '/1000/{print $6}' /etc/passwd");
$home = trim($home);
$files = scandir($home."/BirdSongs/".date('F-Y')."/".date('j-l')."/", SCANDIR_SORT_ASCENDING);
$newest_file = $files[2];
if($newest_file == $_GET['newest_file']) {
die();
}
echo "file,".$newest_file."\n";
$row = 1;
if (($handle = fopen($home."/BirdSongs/".date('F-Y')."/".date('j-l')."/".$newest_file.".csv", "r")) !== FALSE) {
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
if($row != 1){
$num = count($data);
for ($c=0; $c < $num; $c++) {
$exp = explode(';',$data[$c]);
echo $exp[0].",".$exp[3]."\n";
}
}
$row++;
}
fclose($handle);
}
die();
}
?>
<script>
// CREDITS: https://codepen.io/jakealbaugh/pen/jvQweW
@@ -7,6 +40,9 @@ var started = null;
var player = null;
var gain = 128;
const ctx = null;
let fps =[];
let avgfps;
let requestTime;
window.onload = function(){
// if user agent includes iPhone or Mac use legacy mode
if(window.navigator.userAgent.includes("iPhone") || window.navigator.userAgent.includes("Mac")) {
@@ -63,32 +99,49 @@ function fitTextOnCanvas(text,fontface,yPosition){
CTX.fillText(text,document.body.querySelector('canvas').width - (document.body.querySelector('canvas').width * 0.50),yPosition);
}
function applyText(text) {
function applyText(text,x,y) {
console.log(text+" "+parseInt(x)+" "+y)
CTX.fillStyle = 'white';
CTX.font = '25px Roboto Flex';
fitTextOnCanvas(text,"Roboto Flex",document.body.querySelector('canvas').scrollHeight * 0.35)
CTX.font = '15px Roboto Flex';
//fitTextOnCanvas(text,"Roboto Flex",document.body.querySelector('canvas').scrollHeight * 0.35)
CTX.fillText(text,parseInt(x),y)
CTX.fillStyle = 'hsl(280, 100%, 10%)';
}
var previous_detection_identifier = null;
var newest_file;
function loadDetectionIfNewExists() {
const xhttp = new XMLHttpRequest();
xhttp.onload = function() {
// if there's a new detection that needs to be updated to the page
if(this.responseText.length > 0 && !this.responseText.includes("Database")) {
if(previous_detection_identifier != null){
applyText(this.responseText.split(",")[0].replace("_"," "));
var split = this.responseText.split("\n")
for(var i = 1;i < split.length; i++) {
if(parseInt(split[i].split(",")[0]) >= 0){
newest_file = split[0].split(",")[1]
//applyText(split[i].split(",")[1],document.body.querySelector('canvas').width - ((parseInt(split[i].split(",")[0]))*avgfps), (document.body.querySelector('canvas').height * 0.50))
d1 = new Date(newest_file.split("-")[0]+"/"+newest_file.split("-")[1]+"/"+newest_file.split("-")[2]+ " "+newest_file.split("-")[4].replace(".wav",""))
console.log(d1)
d2 = new Date();
timeDiff = (d2-d1)/1000;
// Date csv file was created + relative detection time of bird + mic delay
secago = Math.abs(timeDiff) - split[i].split(",")[0] - 6.8;
console.log(Math.abs(timeDiff) + " - " + split[i].split(",")[0] + " - 6.8");
applyText(split[i].split(",")[1],document.body.querySelector('canvas').width - ((parseInt(secago))*avgfps), (document.body.querySelector('canvas').height * 0.50))
}
previous_detection_identifier = this.responseText.split(",")[1];
}
}
xhttp.open("GET", "overview.php?ajax_detections=true&previous_detection_identifier="+previous_detection_identifier+"&only_name=true", true);
}
xhttp.open("GET", "spectrogram.php?ajax_csv=true&newest_file="+newest_file, true);
xhttp.send();
}
window.setInterval(function(){
loadDetectionIfNewExists();
}, 2500);
}, 500);
function initialize() {
document.body.querySelector('h1').remove();
@@ -102,7 +155,6 @@ function initialize() {
ANALYSER.fftSize = 2048;
try{
process();
} catch(e) {
@@ -122,8 +174,18 @@ function initialize() {
loop();
function loop() {
window.requestAnimationFrame(loop);
function loop(time) {
if (requestTime) {
fpsval = Math.round(1000/((performance.now() - requestTime)))
if(fpsval > 0){
fps.push( fpsval);
}
}
if(fps.length > 0){
avgfps = fps.reduce((a, b) => a + b) / fps.length;
}
requestTime = time;
window.requestAnimationFrame((timeRes) => loop(timeRes));
let imgData = CTX.getImageData(1, 0, W - 1, H);
CTX.fillRect(0, 0, W, H);