AudioContext.decodeAudioData crashes in Dartium

[alextekartik]

The following code:

    AudioContext audioContext = new AudioContext();
    XMLHttpRequest xhr = new XMLHttpRequest();
    xhr.open("GET", "sample.ogg", true);
    xhr.responseType = "arraybuffer";
    xhr.on.load.add((e) {
      audioContext.decodeAudioData(xhr.response, function(buffer) {
        AudioBufferSourceNode source = audioContext.createBufferSource();
        source.connect(audioContext.destination, 0);
        source.buffer = buffer;
        source.noteOn(0);
      });
    });
    xhr.send();

works fine in Chrome/JS but crashes in Dartium. No error reported as Dartium crashes with a "Aw, Snap!" message.

Tested using DartEditor Build 7323 on Windows 64 bits

I did not attach a sample ogg file.

Google Chrome 19.0.1084.41 (Official Build 134854) beta-m
OS Windows
WebKit 536.5 (@­115762)
JavaScript V8 3.9.24.17
Flash 11,2,202,235
User Agent Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.41 Safari/536.5
Command Line "C:\Users\alex\AppData\Local\Google\Chrome\Application\chrome.exe" --flag-switches-begin --flag-switches-end
Executable Path C:\Users\alex\AppData\Local\Google\Chrome\Application\chrome.exe
Profile Path C:\Users\alex\AppData\Local\Google\Chrome\User Data\Default

[alextekartik]

However the following code works:

    AudioContext audioContext = new AudioContext();
    XMLHttpRequest xhr = new XMLHttpRequest();
    xhr.open("GET", "sample.ogg", true);
    xhr.responseType = "arraybuffer";
    xhr.on.load.add((e) {
      AudioBuffer buffer = audioContext.createBuffer(xhr.response, false);
      AudioBufferSourceNode source = audioContext.createBufferSource();
      source.connect(audioContext.destination, 0);
      source.buffer = buffer;
      source.noteOn(0);
    });
    xhr.send();

So it might be a misused of the API. I was trying to follow the example given in http://www.html5rocks.com/en/tutorials/webaudio/intro/

[DartBot]

This comment was originally written by antonm@google.com

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Alex, thanks a lot for a report. Crashing is not the answer whatever goes on inside.

Pavel, may you have a look, please?

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Set owner to podivilov@google.com.

[DartBot]

This comment was originally written by antonm@google.com

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Added this to the M1 milestone.

[DartBot]

This comment was originally written by podivilov@google.com

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Works for me with latest Dartium on windows. Could you please check if it still crashes? If yes, please attach sample.ogg.

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Added NeedsInfo label.

[DartBot]

This comment was originally written by antonm@google.com

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Added AssumedStale label.

[DartBot]

This comment was originally written by aniquilatorb...@gmail.com

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Hello. I've encountered the same issue here. I'm running in Ubuntu x64.
I'm testing using this code:

    AudioContext audioContext = new AudioContext();
    AudioBufferSourceNode source;

    HttpRequest request = new HttpRequest();
    request.open("GET", "virus.ogg", async: true);
    request.responseType = "arraybuffer";

    request.onLoad.listen((_){
        print("before decodeAudio");

        audioContext.decodeAudioData(request.response, (buffer){
            print("decoded");

        });
    });

It breaks on the "before decodeAudio". Every audio format I've tried breaks ( the "Aw, Snap!" message. )

Compiling to javascript and running in chrome works.

[DartBot]

This comment was originally written by @financecoding

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This bug does apply to Dartium on MacOSX

Dart Editor version 0.5.11_r23200
Dart SDK version 0.5.11.1_r23200

Easy way to test is git clone git://github.com/bp74/StageXL_Escape.git and run in Dartium on MacOSX

[DartBot]

This comment was originally written by @financecoding

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Does not apply for

Dart Editor version 0.5.13_r23552
Dart SDK version 0.5.13.1_r23552

[DartBot]

This comment was originally written by dh...@gmail.com

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I am aware this is an old issue but I'm still having this problem... Dartium can't decode the audio (in Dart SDK 1.7.2) but the Chrome JS version works without problems!

[vsmenon]

dhubau: if you are still seeing a crash, please file a new bug. closed bugs don't show up on our tracker, even after you reply. :-)

Please let us know if it's a crash as opposed to not being able to handle a particular audio format. Note, Dartium is based on open source Chromium, not Chrome, and neither supports all the formats Chrome does:

http://www.chromium.org/audio-video

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Removed the owner.