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Generate commands onload 

Rather an on user input. Removes lag from click to camera firing.
This commit is contained in:
Matt 2015-05-09 21:48:34 -04:00
parent 04f654cc95
commit 187da0f140
3 changed files with 29 additions and 14 deletions
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2
webapp/index.html
View File

@ -22,7 +22,7 @@
<div class="row_f">
<div class="for" title="f" onclick="ctrl.set(this);">0</div>
</div>
<div class="row_B">
<div class="row_b">
<div class="back" title="b" onclick="ctrl.set(this);">0</div>
</div>
<div class="row_x">

15
webapp/js/fsk.js
View File

@ -1,4 +1,4 @@
var dataURI, audio, myAudioContext, mySource, myBuffer;
var dataURI, audio, myAudioContext, mySource, myBuffer, bufferArray={};
if ('AudioContext' in window) {
myAudioContext = new AudioContext();
@ -51,6 +51,7 @@ var fsk = {};
fsk.generate = function (str) {
if (str.length === 0) return;
//console.time('generate');
var utf8 = toUTF8(str);
//console.log(utf8);
@ -66,7 +67,7 @@ fsk.generate = function (str) {
var data = "RIFF" + chr32(size + 36) + "WAVE" +
"fmt " + chr32(16, 0x00010001, sampleRate, sampleRate, 0x00080001) +
"data" + chr32(size);
var pushData = function (freq, samples) {
for (var i = 0; i < samples; i++) {
var v = 128 + 127 * Math.sin((2 * Math.PI) * (i / sampleRate) * freq);
@ -87,13 +88,17 @@ fsk.generate = function (str) {
var arrayBuff = Base64Binary.decodeArrayBuffer(dataURI);
myAudioContext.decodeAudioData(arrayBuff, function (audioData) {
myBuffer = audioData;
bufferArray[str] = audioData;
});
}
fsk.play = function () {
fsk.play = function (str) {
mySource = myAudioContext.createBufferSource();
mySource.buffer = myBuffer;
if (typeof str !== 'undefined') {
mySource.buffer = bufferArray[str];
} else {
console.error('No AudioBuffer found for string "' + str + '"');
}
mySource.connect(myAudioContext.destination);
if ('AudioContext' in window) {
mySource.start(0);

26
webapp/js/intval.js
View File

@ -9,17 +9,23 @@ ctrl.pos = 0;
ctrl.loop = false;
ctrl.delay = {
f : 500,
B : 700,
f : 1100,
b : 1200,
x : 1000
};
ctrl.play = function (val) {
fsk.generate(val);
setTimeout(function () {
fsk.play();
ctrl.posCmd(val);
}, 10);
fsk.play(val);
fsk.play(val);
ctrl.posCmd(val);
};
ctrl.generate = function () {
var cmds = Object.keys(ctrl.delay);
for (var i = 0; i < cmds.length; i++) {
console.log('Generating AudioBuffer for ' + cmds[i]);
fsk.generate(cmds[i]);
}
};
ctrl.sendCmd = function (elem) {
@ -97,7 +103,7 @@ ctrl.highlight = function (i) {
if (i !== undefined && i !== false) {
//console.log(i);
$('.seq .row_f > div').eq(i).addClass('highlight');
$('.seq .row_B > div').eq(i).addClass('highlight');
$('.seq .row_b > div').eq(i).addClass('highlight');
$('.seq .row_x > div').eq(i).addClass('highlight');
}
};
@ -229,6 +235,10 @@ ctrl.onload = function () {
if (seq !== undefined && seq !== false) {
ctrl.seq = seq;
}
//pre-generate audiobuffers for more responsive buttons
ctrl.generate();
ctrl.layout();
//FastClick.attach(document.body);
};