Added simple benchmark

src/test/java/Benchmark.java

@@ -0,0 +1,57 @@
+/*
+ * This file is part of AudioMixer - /~https://github.com/RaphiMC/AudioMixer
+ * Copyright (C) 2024-2024 RK_01/RaphiMC and contributors
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import net.raphimc.audiomixer.AudioMixer;
+import net.raphimc.audiomixer.pcmsource.impl.MonoIntPcmSource;
+import net.raphimc.audiomixer.sound.impl.pcm.OptimizedMonoSound;
+
+import javax.sound.sampled.AudioFormat;
+import java.util.Random;
+
+public class Benchmark {
+
+    public static void main(String[] args) {
+        AudioFormat format = new AudioFormat(48000, 16, 2, true, false);
+        int[] samples = new int[48000 * 10];
+        Random random = new Random();
+        for (int i = 0; i < samples.length; i++) {
+            samples[i] = random.nextInt(65536) - 32768;
+        }
+        AudioMixer mixer = new AudioMixer(format);
+        mixer.getMasterMixSound().setMaxSounds(65535);
+
+        // Play 5000 concurrent sounds
+        for (int i = 0; i < 5000; i++) {
+            mixer.playSound(new OptimizedMonoSound(new MonoIntPcmSource(samples), 1.33F, 1, 0));
+        }
+
+        // Warmup (Mix 1 second of audio)
+        for (int i = 0; i < 100; i++) {
+            mixer.mix(10F);
+        }
+
+        // Benchmark (Mix 2 seconds of audio)
+        long start = System.currentTimeMillis();
+        for (int i = 0; i < 200; i++) {
+            mixer.mix(10F);
+        }
+        long end = System.currentTimeMillis();
+        System.out.println("Time: " + (end - start) + "ms");
+    }
+
+}