feat: add CW decoder and linear calculator page

feature/cw/src/main/java/k3/c.java

@@ -0,0 +1,42 @@
+package k3;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+
+/* loaded from: classes.dex */
+public abstract class c {
+
+    /* renamed from: a, reason: collision with root package name */
+    public static final ExecutorService f12093a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public static ExecutorService f12094b;
+    public static final int c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public static final long f12095d;
+
+    /* JADX WARN: Type inference failed for: r1v0, types: [java.lang.Object, k3.a] */
+    static {
+        ExecutorService newCachedThreadPool = Executors.newCachedThreadPool(new b(new a()));
+        f12093a = newCachedThreadPool;
+        f12094b = newCachedThreadPool;
+        c = Runtime.getRuntime().availableProcessors();
+        f12095d = 100000L;
+    }
+
+    public static Future a(Runnable runnable) {
+        if (f12094b.isShutdown() || f12094b.isTerminated()) {
+            f12094b = f12093a;
+        }
+        return f12094b.submit(runnable);
+    }
+
+    public static void b(Future[] futureArr) throws InterruptedException, java.util.concurrent.ExecutionException {
+        // smali: 无 catch 直接向上抛 -> Java 声明 throws(忠实表达)
+        for (Future future : futureArr) {
+            future.get();
+        }
+    }
+}