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HTML

{% extends 'base.html' %}
{% block main %}
{% from "_formhelpers.html" import render_field %}
<h1 class="page-header">Add Audio</h1>
{% with messages = get_flashed_messages() %}
{% if messages %}
<div class="alert alert-danger">
<ul>
{% for message in messages %}
<li>{{ message }}</li>
{% endfor %}
</ul>
</div>
{% endif %}
{% endwith %}
<form method="POST" action="{{ url_for('addaudio') }}" enctype=multipart/form-data>
{{ form.csrf_token }}
<input type="hidden" name="longitude" value="{{ longitude }}" />
<input type="hidden" name="latitude" value="{{ latitude }}" />
<div class="recorder">
Recorder
<input type="button" class="start" value="Record" />
<input type="button" class="stop" value="Stop" />
<pre class="status"></pre>
</div>
<div id="audio">
<div class="record_controls">
<a class="record_btn audio_btn" id="record_btn" onclick="record_audio()" href="#"><span class="icon"></span>record</a>
<a class="stop_btn audio_btn" id="stop_btn" onclick="stop_audio()" href="#"><span class="icon"></span>stop</a>
<a class="play_btn audio_btn" id="play_btn" onclick="play_audio()" href="#"><span class="progress_bar"></span><span class="icon_p"></span>play</a>
<a class="redo_btn audio_btn" id="redo_btn" onclick="redo_audio()" href="#"></span>redo</a>
</div>
<div id="audio-player-container"></div>
</div>
<input hidden="true" type="file" name="file" id="uploadedFile" accept="audio/*"><br>
<div style="width: 100%;">
message: <br>{{ form.message(class="form-control") }}
</div>
<button type="submit">Submit</button>
</form>
<clear>
{% endblock main %}
{% block js%}
<script>
var mediaRecorder;
var seconds_rec = 0;
var seconds_int;
var audio;
var state = "empty";
var audio_context;
function record_audio(){
if(state == "empty"){
navigator.mediaDevices.getUserMedia({ audio: true })
.then(stream => {
mediaRecorder = new MediaRecorder(stream);
mediaRecorder.start();
state = "recording";
document.getElementById('stop_btn').style.display = 'block'
seconds_int = setInterval(
function () {
document.getElementById("record_btn").innerHTML = seconds_rec + " s";
seconds_rec += 1;
}, 1000);
const audioChunks = [];
mediaRecorder.addEventListener("dataavailable", event => {
audioChunks.push(event.data);
});
mediaRecorder.addEventListener("stop", () => {
console.log("stopping");
const audioBlob = new Blob(audioChunks, {type: 'audio/mpeg'});
const audioUrl = URL.createObjectURL(audioBlob);
var sound = document.createElement('audio');
sound.id = 'audio-player';
sound.controls = 'controls';
sound.src = audioUrl;
console.log(audioUrl)
sound.type = 'audio/mpeg';
document.getElementById("audio-player-container").innerHTML = sound.outerHTML;
let file = new File([audioBlob], "audio.ogg",{type:"audio/mpeg"});
let container = new DataTransfer();
container.items.add(file);
document.getElementById("uploadedFile").files = container.files;
audio = new Audio(audioUrl);
audio.addEventListener("ended", function(){
audio.currentTime = 0;
document.getElementById("play_btn").innerHTML = '<span class="icon_p"></span>play'
});
audio.addEventListener("timeupdate", function() {
var currentTime = audio.currentTime;
var duration = audio.duration;
$('.progress_bar').stop(true,true).animate({'width':(currentTime +.25)/duration*100+'%'},0,'linear');
});
document.getElementById('play_btn').style.display = 'block'
document.getElementById('redo_btn').style.display = 'block'
document.getElementById('stop_btn').style.display = 'none'
document.getElementById("record_btn").innerHTML = "recording…";
document.getElementById('record_btn').style.display = 'none'
});
setTimeout(() => {
stop_audio()
}, 1000 * 60);
});
}
}
function stop_audio(){
clearInterval(seconds_int);
mediaRecorder.stop();
}
function redo_audio(){
state = "empty";
seconds_rec = 0;
document.getElementById('play_btn').style.display = 'none'
document.getElementById('redo_btn').style.display = 'none'
document.getElementById('stop_btn').style.display = 'block'
document.getElementById('record_btn').style.display = 'block'
record_audio()
}
function play_audio(){
if(audio.paused){
audio.play();
document.getElementById("play_btn").innerHTML = '</span><span class="icon_b"></span><span class="text">pause</span><span class="progress_bar">'
}
else{
audio.pause();
document.getElementById("play_btn").innerHTML = '</span><span class="icon_p"></span><span class="text">play</span><span class="progress_bar">'
}
}
</script>
{% endblock js%}