[+] 混音

taoyao-signal-server/taoyao-server/src/test/java/com/acgist/taoyao/AudioMixerTest.java

@@ -0,0 +1,31 @@
+package com.acgist.taoyao;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+import org.junit.jupiter.api.Test;
+
+public class AudioMixerTest {
+
+    @Test
+    public void testMixer() throws IOException {
+//      ffmpeg -i audio.mp3 -f s32le audio.pcm
+//      ffplay -i audio.pcm -f s32le -ar 48000 -ac 1
+        final File fileA = new File("D:\\tmp\\mixer\\1.pcm");
+        final File fileB = new File("D:\\tmp\\mixer\\2.pcm");
+        final byte[] bytesA = Files.readAllBytes(fileA.toPath());
+        final byte[] bytesB = Files.readAllBytes(fileB.toPath());
+        final int length = Math.min(bytesA.length, bytesB.length);
+        final byte[] target = new byte[length];
+        int a, b;
+        for (int i = 0; i < length; i++) {
+            a = bytesA[i];
+            b = bytesB[i];
+            target[i] = (byte) ((a + b) / 2);
+        }
+        Files.write(Paths.get("D:\\tmp\\mixer\\3.pcm"), target);
+    }
+    
+}