Update Files

Kha/Backends/HTML5/kha/audio2/VirtualStreamChannel.hx

@@ -0,0 +1,126 @@
+package kha.audio2;
+
+import kha.js.AEAudioChannel;
+import kha.audio1.AudioChannel;
+
+enum abstract PlayMode(Int) {
+	var Stopped;
+	var Paused;
+	var Playing;
+}
+
+class VirtualStreamChannel implements kha.audio1.AudioChannel {
+	var aeChannel: AEAudioChannel;
+	var mode = PlayMode.Playing;
+	var lastTickTime: Float;
+	var lastPosition: Float;
+	var looping: Bool;
+
+	public function new(aeChannel: AEAudioChannel, looping: Bool) {
+		this.aeChannel = aeChannel;
+		this.looping = looping;
+		lastTickTime = Scheduler.realTime();
+		lastPosition = 0;
+	}
+
+	public function wake(): Void {
+		updatePosition();
+		aeChannel.position = lastPosition;
+		aeChannel.play();
+	}
+
+	function updatePosition(): Void {
+		var now = Scheduler.realTime();
+		switch (mode) {
+			case Stopped:
+				lastPosition = 0;
+			case Paused:
+			// nothing
+			case Playing:
+				lastPosition += now - lastTickTime;
+				while (lastPosition > length) {
+					lastPosition -= length;
+				}
+		}
+		lastTickTime = now;
+	}
+
+	public function play(): Void {
+		if (SystemImpl.mobileAudioPlaying) {
+			aeChannel.play();
+		}
+		else {
+			updatePosition();
+			mode = Playing;
+		}
+	}
+
+	public function pause(): Void {
+		if (SystemImpl.mobileAudioPlaying) {
+			aeChannel.pause();
+		}
+		else {
+			updatePosition();
+			mode = Paused;
+		}
+	}
+
+	public function stop(): Void {
+		if (SystemImpl.mobileAudioPlaying) {
+			aeChannel.stop();
+		}
+		else {
+			updatePosition();
+			mode = Stopped;
+		}
+	}
+
+	public var length(get, never): Float; // Seconds
+
+	function get_length(): Float {
+		return aeChannel.length;
+	}
+
+	public var position(get, set): Float; // Seconds
+
+	function get_position(): Float {
+		if (SystemImpl.mobileAudioPlaying) {
+			return aeChannel.position;
+		}
+		else {
+			updatePosition();
+			return lastPosition;
+		}
+	}
+
+	function set_position(value: Float): Float {
+		if (SystemImpl.mobileAudioPlaying) {
+			return aeChannel.position = value;
+		}
+		else {
+			updatePosition();
+			return lastPosition = value;
+		}
+	}
+
+	public var volume(get, set): Float;
+
+	function get_volume(): Float {
+		return aeChannel.volume;
+	}
+
+	function set_volume(value: Float): Float {
+		return aeChannel.volume = value;
+	}
+
+	public var finished(get, never): Bool;
+
+	function get_finished(): Bool {
+		if (SystemImpl.mobileAudioPlaying) {
+			return aeChannel.finished;
+		}
+		else {
+			return mode == Stopped || (!looping && position >= length);
+		}
+	}
+}