samirkumardas / opus-to-pcm Goto Github PK

View Code? Open in Web Editor NEW

70.0 6.0 15.0 2.05 MB

Decode raw opus packet to PCM without using any external library in your browser.

License: Other

HTML 5.97% JavaScript 94.03%

opus pcm audiocontext decodeaudiodata libopus opus-tools raw-opus-packet opus-to-pcm opus-browser javascript

opus-to-pcm's Introduction

Hi there 👋

opus-to-pcm's People

Contributors

Stargazers

Watchers

Forkers

liming518110 megamk nacgarg ishrak-imam juhyunkim82 neuenmuller softsmoothie sinlt shiv50084 arteyazilim fanyun-01 crazyguitar adithyan-r-1244

opus-to-pcm's Issues

Opus decoder.on("decode",... never executed.

server.html

<!doctype html>
<html>
	<head>
		<script src="https://unpkg.com/[email protected]/dist/peerjs.min.js"></script>
	</head>
	<body>
		<script>
			var peer = new Peer("epalxeis");
			
			var getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
			peer.on('call', function(call) {
			  getUserMedia({video: false, audio: true}, function(stream) {
				call.answer(stream); // Answer the call with an A/V stream.
				call.on('stream', function(remoteStream) {
				  // Show stream in some video/canvas element.
				});
			  }, function(err) {
				console.log('Failed to get local stream' ,err);
			  });
			});
					
		</script>

	</body>
</html>

client.html

<!doctype html>
<html>
	<head>
		
		<script src="https://unpkg.com/[email protected]/dist/peerjs.min.js"></script>
		<script type="text/javascript" src="dist/opus_to_pcm.js"></script>
	<script type="text/javascript" src="example/player/pcm_player.js"></script>
	</head>
	<body>
		<script>
			var decoder;
		
			var peer = new Peer();
			var record = false;
			var getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
			getUserMedia({video: false, audio: true}, function(stream) {
			  var call = peer.call('epalxeis', stream);
			  call.on('stream', function(remoteStream) {
				// Show stream in some video/canvas element.
				if(record==false){
					var audio = document.createElement("audio");
					audio.srcObject = remoteStream;
					document.body.appendChild(audio);
					audio.play();
					audio.muted = true;
					var epalxeis_audio = document.getElementById("epalxeis_audio");
					record=true;
					var options = {mimeType: "audio/webm;codecs=opus"};
					var recorder = new MediaRecorder(remoteStream,options);
					// fires every one second and passes an BlobEvent
					
					recorder.ondataavailable = event => {

						// get the Blob from the event
						var blob = event.data;
						
						decoder = new OpusToPCM({
						  channels: 1,
						  fallback: false,
						});
						
						
						
						// Assign function to decode callback
						decoder.on('decode', function(pcmData) {

							console.log("123");

						});
						
						
						
						// New file 
						var reader = new FileReader();

						// Assign callback
						reader.onload = function(){
							var audioBuffer = new Int16Array(reader.result);
							decoder.decode(audioBuffer);
						}

						// Read data into file reader (will start the onload function above)
						reader.readAsArrayBuffer(event.data);
												
						
					};

					// make data available event fire every one second
					recorder.start(5000);
				}
				
			  });
			}, function(err) {
			  console.log('Failed to get local stream' ,err);
			});
					
		</script>

	</body>
	<audio id="epalxeis_audio"></audio>
	
</html>

Problem: decoder.on("decode",... callback function never executed.

TypeScript definitions

Is there any plan to add to typescript definitions or typescript examples for this project?
It will be really useful if there are any typescript definitions for the main OpustoPCM class and its related functions

Also, I ran the example server and client that was present in the repo (with some of the raw_opus sample files), and I got this error

The buffer passed to decodeAudioData contains invalid content which cannot be decoded successfully.
EncodingError: The given encoding is not supported.

I don't think I changed anything with respect to the code in the example. I just translated to the code to use TypeScript syntax wherever possible. I am not sure if the error was because of unknown typing definitions, or its because of something else.

Update NPM package with dist folder

The version that's on NPM right now doesn't have the dist folder, so webpack can't load the main file linked in package.json

can

Delay in playback

Hello! I'm currently working on audio decoding with Websocket. So far, I've decode the opus packet successfully, but the voices was off and on, how to resolve the problem? For example to set a buffer area to play. I'm sorry my English is not very good, If you see it, please give me a reply. Thank you

connection to 'ws://localhost:8080/' failed

Thanks. Great Projects !!!
But I am getting:
WebSocket connection to 'ws://localhost:8080/' failed: --- in Chrome
and
Firefox can’t establish a connection to the server at ws://localhost:8080/. ---- in Firefox
when attempting to run the example.html on the line:
var ws = new WebSocket(socketURL);
Can you help?

Error: corrupted stream

Hello,

trying to implement your library, but got these errors:

Here is a stringified version of one of the chunks that causing a problem:

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decoder.on('decode') callback is not firing.

Maybe you can suggest what I'm doing wrong?

How to convert to PCM 16 bit?

How can I do that? Should I change something in the source code?

Include instructions on how to create test Opus packet files for example

ffmpeg and opusenc produce output with OGG encapsulation. There doesn't seem to be any way around this.

I would like to test with my own Opus encoded audio data. Some docs on how to create the *.txt packet files would be useful.

Make this work on node without browser support

Is it possible to have this module work as a pure node module, taking in an opus stream and producing pcm stream without using the browser?

extract raw opus stream from existing ogg file

First of all, thanks for your excellent work :>
The server.js example works as expected and the sound can be played in the chrome browser.

I tried out my own ogg/opus file and split it into chunks using NNNN.txt format but they cannot be played normally. I guess it may be due to the fact that server.js expects to receive raw OPUS data without ogg header.

My question is... how can I extract the raw OPUS stream from an ogg file? I tried out ffmpeg and opusenc with no luck since they all convert audio in opus with ogg header.

Would you please advise the tool to extract raw stream? Any suggestion?

WEBAUDIO17050 on EdgeHtml 17.17134

The library is working fine on firefox, chrome, opera...
But, I'm getting WEBAUDIO17050 with microsoft Edge.

Any clue?

Thanks in advance,

I think it doesn't work

I actually dont know if I'm doing it wrong or there are any glitches. But the reproduction is like this:

get audio from browser with navigator.mediaDevices.getUserMedia
capture packets with mediaRecorder.request data
get arrayBuffer from event.Blob and send it to OpusToPCM.decode
I set decoder.on('data'), but it is not called

I followed the docs, but it is not working.

Only noise..

I'm trying to stream a pulseaudio pcm to web browser, but i only get noise.
Any help?
Thanks in advance

Here is the code:
nodejs

var path = require('path');
const WebSocket = require('ws');
const Pulse = require('pulseaudio2');
const prism = require('prism-media');

async function main() {
  const ctx = new Pulse();
  const rate = 24000
  ctx.on('state', (state) => {
      console.log('context:', state);
  });
  ctx.on('error', function(error){
    console.log(error)
    //
  });

  const opts = {
    channels: 1,
    rate:rate,
    format:'s16le',
    flags:'adjust_latency',
    latency:1000,
    properties: {
        'filter.want': 'echo-cancel',
        'application.id': 'node-stream-echo-cancelled',
    }
  };

  var rec = ctx.createRecordStream(opts)
  rec.on('state', (state) => {
    console.log('record:', state);
  });

  const express = require('express')
  const app = express()
  const server = require('http').createServer(app)
  app.use(express.static(path.resolve(__dirname, "./receiver")));
  server.listen(8080, function(){
    console.log('listening on port 8080')
  })
  var wss = new WebSocket.Server({server: server });
  wss.binaryType = "arraybuffer";
  console.log('Server ready...');
  wss.on('connection', function connection(ws) {
          console.log('Socket connected. sending data...');
  });

  const opus = new prism.opus.Encoder({ rate: rate, channels: 1, frameSize: rate/100});
  rec.pipe(opus)  
  opus.on("data", (buff) =>{
    wss.clients.forEach(function each(client) {
      if (client.readyState === WebSocket.OPEN) {
          client.send(buff);
      }
    });
  }) 

}

main();

html client

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Opus to PCM</title>
    <script type="text/javascript" src="./pcm-player.min.js"></script>
    <script type="text/javascript" src="./dist/opus_to_pcm.js"></script>
</head>
<body>
<div id="container" style="width: 400px; margin: 0 auto;">
    <h2>It should play audio if everying went well!</h2>
</div>
<script>
 window.onload = function() {
   var socketURL = 'ws://localhost:8080';
    var channels = 1;
   var decoder = new OpusToPCM({
        channels: channels,
        fallback: true,
        libopusPath: './dist/libopus/opus.min.js' 
    });
    var srate = decoder.getSampleRate()
    /*
    var player = new PCMPlayer({
        encoding: '16bitInt',
        channels: channels,
        sampleRate: decoder.getSampleRate(),
        flushingTime: 500
   });
   */
   var player = new PCMPlayer(channels, decoder.getSampleRate());   
    decoder.on('decode', function(pcmData) {
        player.feed(pcmData);    
    });

    var ws = new WebSocket(socketURL);
       ws.binaryType = 'arraybuffer';
       ws.addEventListener('message',function(event) {
                var data = new Uint8Array(event.data);
                decoder.decode(data)
    });

 }   
  
</script>
</body>
</html>

** Updated to 1 channel everywhere

How to convert a raw Opus file I have locally?

I've a raw Opus file that I want to convert to 16-bit PCM. I see you commented on #19 that it's not possible using this library. However, it's not clear to me how to actually do the first step, which is make a playable Opus file from the raw data using this library. The examples/index.html doesn't have any upload file option, which I thought what an example should be all about.

I do see mention of Node stuff, but not being a JS/front end dev, it's not clear to me what to do with that. Can you provide clear usage instructions?

Delay of arround 1 sec while playing decoded audio.

Hello I have used this opus decoding code and integrated in my application to play encoded opus audio. Audio is decoding properly and I am getting clear audio.
But the problem is it is playing audio 1 sec late as compared to video.
I have audio and video data coming on web sockets in java-script and I am decoding both but audio lagging behind video exactly 1 sec.
I have also tried only playing audio with decoding and playing in java-script and compared with VLC audio of same stream ans I have noticed around 1 sec delay.
Any help would be appreciated.

Thanks,
Kuldeep.

write file

Have opus encoded packets in zello-channel-api, but how to write data to .opus file?

Thx

Make library a module for use with Webpack

Right now the Decoder object is just a global variable. It would be nice if instead it was an exported module so that it would be easier to import with Webpack

Configurations used to create raw opus packet

What is the configuration used (like number of channels, bitrate, sample rate) for the raw opus packet provided in the example folder?

We have a stream of 16-bit PCM data, which we have converted to raw opus packet using lipopus and tried to convert it to PCM using this library.

We have also tried decodeAudioData on the Ogg pages created from 16-bit PCM data using lipopusenc.

Configuration used for our sample is

Number of channels - 1
Sample rate - 48000
Bit Rate - 64000

In both the above cases, we are getting the following error on decodeAudioData.

DOMException: Failed to execute 'decodeAudioData' on 'BaseAudioContext': Unable to decode audio data

Any help would be appreciated. @samirkumardas

server not working as expected

"Upgrade Required" is what i receive in web page upon running server.js

Could not decode a text frame as UTF-8

I get a Could not decode a text frame as UTF-8 error in Chrome. on the line with var ws = new WebSocket(socketURL); in the example HTML file.

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