Changeset 29880


Ignore:
Timestamp:
05/14/15 15:52:35 (6 years ago)
Author:
davidb
Message:

Audio scriptProcessed made a global variable. Possible on Chrome that this was being garbage collected when a local variable, leading to the audio processing not working when video play pressed

File:
1 edited

Legend:

Unmodified
Added
Removed
  • main/trunk/model-sites-dev/respooled/collect/popup-video-respooled/js/in-the-groove.js

    r29867 r29880  
     1"use strict";
    12
    23// https://developer.mozilla.org/en-US/docs/Web/API/AudioContext/createScriptProcessor
     
    45var audioCtx = new (window.AudioContext || window.webkitAudioContext)();
    56
     7//var InTheGroove = true;
    68var InTheGroove = false;
    79var MissingTheGroovePending = false;
     
    1618var prev_input = [0,0];
    1719
     20var tinnyEffectNode = null;
     21
    1822$(document).ready(function() {
    1923    $('#video').on('loadedmetadata', function() {
    2024
    21     displayDuration(this.duration);
     25    //displayDuration(this.duration);   
    2226
    2327    // Create a MediaElementAudioSourceNode
    2428    // Feed the HTMLMediaElement into it
    2529    var source = audioCtx.createMediaElementSource(this);
    26    
     30    console.log("**** video source = " + source);
     31
    2732    // connect the AudioBufferSourceNode to the tinnyEffectNode
    2833    // and the tinnyEffectNode to the destination, so we can play the
     
    3035    // pressed
    3136
    32     var tinnyEffectNode = audioCtx.createScriptProcessor(bufferSize, 2, 2);
     37    tinnyEffectNode = audioCtx.createScriptProcessor(bufferSize, 2, 2);
    3338    tinnyEffectNode.onaudioprocess = function(e) {
    3439
     
    4045        for (var i = 0; i < bufferSize; i++) {
    4146            if (InTheGroove) {
    42             if (c==0) {
    43                 output[i] = input[i];
    44             }
    45             else {
    46                 output[i] = 0;
    47             }
     47            output[i] = input[i];
    4848            }
    4949            else {
     
    5151            output[i] = input[i] - prev_input[c];
    5252            }
     53            //if (i==128) {
     54            //  console.log("*** input[128] = " + input[i]);
     55            //}
     56
    5357            prev_input[c] = input[i];
    5458        }
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