jdk/test/javax/sound/sampled/Clip/Drain/ClipDrain.java
changeset 41905 e8e5df013c6e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/sound/sampled/Clip/Drain/ClipDrain.java	Mon Oct 31 14:50:09 2016 +0300
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.Clip;
+import javax.sound.sampled.DataLine;
+import javax.sound.sampled.Mixer;
+
+/**
+ * @test
+ * @bug 4732218
+ * @summary Clip.drain does not actually block until all I/O is complete as
+ *          documented.
+ */
+public class ClipDrain {
+    static int successfulTests = 0;
+    static AudioFormat format = new AudioFormat(8000, 16, 1, true, false);
+    // create a 10-second file
+    static byte[] soundData = new byte[(int) (format.getFrameRate() * format.getFrameSize() * 10)];
+
+    static int TOLERANCE_MS = 2500; // how many milliseconds too short is tolerated...
+
+    private static void doMixerClip(Mixer mixer) throws Exception {
+        boolean waitedEnough=false;
+        try {
+            DataLine.Info info = new DataLine.Info(Clip.class, format);
+            Clip clip = (Clip) mixer.getLine(info);
+            clip.open(format, soundData, 0, soundData.length);
+
+            // sanity
+            if (clip.getMicrosecondLength()/1000 < 9900) {
+                throw new Exception("clip's microsecond length should be at least 9900000, but it is "+clip.getMicrosecondLength());
+            }
+            long start = System.currentTimeMillis();
+
+            System.out.println(" ---------- start --------");
+            clip.start();
+            // give time to actually start it. ALSA implementation needs that...
+            Thread.sleep(300);
+            System.out.println("drain ... ");
+            clip.drain();
+            long elapsedTime = System.currentTimeMillis() - start;
+            System.out.println("close ... ");
+            clip.close();
+            System.out.println("... done");
+            System.out.println("Playback duration: "+elapsedTime+" milliseconds.");
+            waitedEnough = elapsedTime >= ((clip.getMicrosecondLength() / 1000) - TOLERANCE_MS);
+        } catch (Throwable t) {
+                System.out.println("  - Caught exception. Not failed.");
+                System.out.println("  - "+t.toString());
+                return;
+        }
+        if (!waitedEnough) {
+            throw new Exception("Drain did not wait long enough to play entire clip.");
+        }
+        successfulTests++;
+    }
+
+
+    private static void doAll() throws Exception {
+        Mixer.Info[] mixers = AudioSystem.getMixerInfo();
+        for (int i=0; i<mixers.length; i++) {
+            Mixer mixer = AudioSystem.getMixer(mixers[i]);
+            System.out.println("--------------");
+            System.out.println("Testing mixer: "+mixers[i]);
+            doMixerClip(mixer);
+        }
+        if (mixers.length==0) {
+            System.out.println("No mixers available!");
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        if (!isSoundcardInstalled()) {
+            return;
+        }
+        doAll();
+        if (successfulTests==0) {
+            System.out.println("Could not execute any of the tests. Test NOT failed.");
+        } else {
+            System.out.println("Test PASSED.");
+        }
+    }
+
+    /**
+     * Returns true if at least one soundcard is correctly installed
+     * on the system.
+     */
+    public static boolean isSoundcardInstalled() {
+        boolean result = false;
+        try {
+            Mixer.Info[] mixers = AudioSystem.getMixerInfo();
+            if (mixers.length > 0) {
+                result = AudioSystem.getSourceDataLine(null) != null;
+            }
+        } catch (Exception e) {
+            System.err.println("Exception occured: "+e);
+        }
+        if (!result) {
+            System.err.println("Soundcard does not exist or sound drivers not installed!");
+            System.err.println("This test requires sound drivers for execution.");
+        }
+        return result;
+    }
+}