Work-in-progress

(Off home!)

Author: cwoffenden

test/webaudio/audioworklet_in_out_stereo.c

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+#include <emscripten/em_js.h>
+#include <emscripten/webaudio.h>
+
+#define AUDIO_STACK_SIZE 2048
+
+EM_JS(bool, addAudio, (EMSCRIPTEN_WEBAUDIO_T ctxHnd, const char* url, const char* label), {
+	var context = emscriptenGetAudioObject(ctxHnd);
+	if (context) {
+		var audio = document.createElement('audio');
+		audio.src = UTF8ToString(url);
+		audio.loop = true;
+		var track = context.createMediaElementSource(audio);
+		track.connect(context.destination);
+		
+		var button = document.createElement('button');
+		button.innerHTML = UTF8ToString(label);
+		button.onclick = () => {
+			if (context.state == 'suspended') {
+				context.resume();
+			}
+			audio.play();
+		};
+		
+		document.body.appendChild(button);
+		return true;
+	}
+	return false;
+});
+
+int main() {
+	EMSCRIPTEN_WEBAUDIO_T context = emscripten_create_audio_context(NULL);
+	
+	addAudio(context, "audio_files/emscripten-beat.mp3", "Play Beat");
+	addAudio(context, "audio_files/emscripten-bass.mp3", "Play Bass");
+}