115 lines
3.0 KiB
Haxe
115 lines
3.0 KiB
Haxe
package kha.js;
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import haxe.io.Bytes;
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import js.Browser;
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import js.html.XMLHttpRequest;
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import kha.audio2.Audio;
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/*
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class WebAudioChannel extends kha.SoundChannel {
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private var buffer: Dynamic;
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private var startTime: Float;
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private var offset: Float;
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private var source: Dynamic;
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public function new(buffer: Dynamic) {
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super();
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this.offset = 0;
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this.buffer = buffer;
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this.startTime = Audio._context.currentTime;
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this.source = Audio._context.createBufferSource();
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this.source.buffer = this.buffer;
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this.source.connect(Audio._context.destination);
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this.source.start(0);
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}
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override public function play(): Void {
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if (source != null) return;
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super.play();
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startTime = Audio._context.currentTime - offset;
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source.start(0, offset);
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}
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override public function pause(): Void {
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source.stop();
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offset = Audio._context.currentTime - startTime;
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startTime = -1;
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source = null;
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}
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override public function stop(): Void {
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source.stop();
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source = null;
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offset = 0;
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startTime = -1;
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super.stop();
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}
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override public function getCurrentPos(): Int {
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if (startTime < 0) return Math.ceil(offset * 1000);
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else return Math.ceil((Audio._context.currentTime - startTime) * 1000); //Miliseconds
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}
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override public function getLength(): Int {
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return Math.floor(buffer.duration * 1000); //Miliseconds
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}
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}
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*/
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class WebAudioSound extends kha.Sound {
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public function new(filename: String, done: kha.Sound->Void, failed: AssetError->Void) {
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super();
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var request = untyped new XMLHttpRequest();
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request.open("GET", filename, true);
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request.responseType = "arraybuffer";
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request.onerror = function() {
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failed({url: filename});
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};
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request.onload = function() {
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compressedData = Bytes.ofData(request.response);
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uncompressedData = null;
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done(this);
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};
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request.send(null);
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}
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function superUncompress(done: Void->Void): Void {
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super.uncompress(done);
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}
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override public function uncompress(done: Void->Void): Void {
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Audio._context.decodeAudioData(compressedData.getData(), function(buffer: js.html.audio.AudioBuffer) {
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final ch0 = buffer.getChannelData(0);
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final ch1 = buffer.numberOfChannels == 1 ? ch0 : buffer.getChannelData(1);
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final len = ch0.length;
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uncompressedData = new kha.arrays.Float32Array(len * 2);
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length = buffer.duration;
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channels = buffer.numberOfChannels;
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sampleRate = Math.round(buffer.sampleRate);
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var idx = 0;
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var i = 0;
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final lidx = len * 2;
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function uncompressInner() {
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var chk_len = idx + 11025;
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var next_chk = chk_len > lidx ? lidx : chk_len;
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while (idx < next_chk) {
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uncompressedData[idx] = ch0[i];
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uncompressedData[idx + 1] = ch1[i];
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idx += 2;
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++i;
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}
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if (idx < lidx)
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js.Browser.window.setTimeout(uncompressInner, 0);
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else {
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compressedData = null;
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done();
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}
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};
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uncompressInner();
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}, function() {
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superUncompress(done);
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});
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}
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}
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