52 lines
1.7 KiB
Haxe
52 lines
1.7 KiB
Haxe
package kha.capture;
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import js.html.audio.AudioProcessingEvent;
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import kha.audio2.Buffer;
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class AudioCapture {
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static var input: js.html.audio.MediaStreamAudioSourceNode;
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static var processingNode: js.html.audio.ScriptProcessorNode;
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static var buffer: Buffer;
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public static var audioCallback: Int->Buffer->Void;
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public static function init(initialized: Void->Void, error: Void->Void): Void {
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if (kha.audio2.Audio._context == null) {
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error();
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return;
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}
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var getUserMedia = untyped __js__("navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia");
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getUserMedia.call(js.Browser.navigator, {audio: true}, function(stream: Dynamic) {
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input = kha.audio2.Audio._context.createMediaStreamSource(stream);
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var bufferSize = 1024 * 2;
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buffer = new Buffer(bufferSize * 4, 2, Std.int(kha.audio2.Audio._context.sampleRate));
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processingNode = kha.audio2.Audio._context.createScriptProcessor(bufferSize, 1, 0);
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processingNode.onaudioprocess = function(e: AudioProcessingEvent) {
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if (audioCallback != null) {
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var input1 = e.inputBuffer.getChannelData(0);
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var input2 = e.inputBuffer.getChannelData(0);
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for (i in 0...e.inputBuffer.length) {
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buffer.data.set(buffer.writeLocation, input1[i]);
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buffer.writeLocation += 1;
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buffer.data.set(buffer.writeLocation, input2[i]);
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buffer.writeLocation += 1;
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if (buffer.writeLocation >= buffer.size) {
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buffer.writeLocation = 0;
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}
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}
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audioCallback(e.inputBuffer.length * 2, buffer);
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}
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}
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input.connect(processingNode);
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// input.connect(kha.audio2.Audio._context.destination);
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initialized();
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}, function() {
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error();
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});
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}
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}
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