43 lines
1.1 KiB
JavaScript
43 lines
1.1 KiB
JavaScript
//
|
|
// swar.js
|
|
//--------------------
|
|
// Reads swar files.
|
|
// by RHY3756547
|
|
//
|
|
// includes: gl-matrix.js (glMatrix 2.0)
|
|
//
|
|
|
|
window.swar = function(input, dataView) {
|
|
var t = this;
|
|
this.load = load;
|
|
|
|
function load(input, dataView) {
|
|
var view = (dataView)?input:(new DataView(input));
|
|
var header = null;
|
|
var offset = 0;
|
|
|
|
var stamp = readChar(view, 0x0)+readChar(view, 0x1)+readChar(view, 0x2)+readChar(view, 0x3);
|
|
if (stamp != "SWAR") throw "SWAR invalid. Expected SWAR, found "+stamp;
|
|
offset += 16; //skip magic number, size and number of blocks
|
|
var data = readChar(view, offset)+readChar(view, offset+1)+readChar(view, offset+2)+readChar(view, offset+3);
|
|
if (data != "DATA") throw "SWAV invalid, expected DATA, found "+data;
|
|
offset += 40; //skip reserved 0s and size
|
|
|
|
var nSamples = view.getUint32(offset, true);
|
|
offset += 4;
|
|
|
|
t.samples = [];
|
|
for (var i=0; i<nSamples; i++) {
|
|
t.samples.push(new swav(new DataView(input, view.getUint32(offset, true)), false, true));
|
|
offset += 4;
|
|
}
|
|
}
|
|
|
|
function readChar(view, offset) {
|
|
return String.fromCharCode(view.getUint8(offset));
|
|
}
|
|
|
|
if (input != null) {
|
|
load(input, dataView);
|
|
}
|
|
} |