LoudnessEnhancer basic test

Effect is supposed to be present if audio output feature
  is available

Bug 18074075

Change-Id: I7306a1b19eaa2ed86bf710dec6d33528fad01479
diff --git a/tests/tests/media/src/android/media/cts/LoudnessEnhancerTest.java b/tests/tests/media/src/android/media/cts/LoudnessEnhancerTest.java
new file mode 100644
index 0000000..9515c22
--- /dev/null
+++ b/tests/tests/media/src/android/media/cts/LoudnessEnhancerTest.java
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.media.cts;
+
+import com.android.cts.media.R;
+
+import android.content.Context;
+import android.media.audiofx.AudioEffect;
+import android.media.AudioFormat;
+import android.media.AudioManager;
+import android.media.MediaPlayer;
+import android.media.audiofx.LoudnessEnhancer;
+import android.os.Looper;
+import android.test.AndroidTestCase;
+import android.util.Log;
+
+public class LoudnessEnhancerTest extends PostProcTestBase {
+
+    private String TAG = "LoudnessEnhancerTest";
+    private LoudnessEnhancer mLE;
+
+    //-----------------------------------------------------------------
+    // LOUDNESS ENHANCER TESTS:
+    //----------------------------------
+
+    //-----------------------------------------------------------------
+    // 0 - constructor
+    //----------------------------------
+
+    //Test case 0.0: test constructor and release
+    public void test0_0ConstructorAndRelease() throws Exception {
+        if (!hasAudioOutput()) {
+            return;
+        }
+        AudioManager am = (AudioManager) getContext().getSystemService(Context.AUDIO_SERVICE);
+        assertNotNull("null AudioManager", am);
+        getLoudnessEnhancer(0);
+        releaseLoudnessEnhancer();
+
+        int session = am.generateAudioSessionId();
+        assertTrue("cannot generate new session", session != AudioManager.ERROR);
+        getLoudnessEnhancer(session);
+        releaseLoudnessEnhancer();
+    }
+
+    //-----------------------------------------------------------------
+    // 1 - get/set parameters
+    //----------------------------------
+
+    //Test case 1.0: test set/get target gain
+    public void test1_0TargetGain() throws Exception {
+        if (!hasAudioOutput()) {
+            return;
+        }
+        getLoudnessEnhancer(0);
+        try {
+            mLE.setTargetGain(0);
+            assertEquals("target gain differs from value set", 0, mLE.getTargetGain());
+            mLE.setTargetGain(800);
+            assertEquals("target gain differs from value set", 800, mLE.getTargetGain());
+        } catch (IllegalArgumentException e) {
+            fail("target gain illegal argument");
+        } catch (UnsupportedOperationException e) {
+            fail("target gain unsupported operation");
+        } catch (IllegalStateException e) {
+            fail("target gain operation called in wrong state");
+        } finally {
+            releaseLoudnessEnhancer();
+        }
+    }
+
+    //-----------------------------------------------------------------
+    // private methods
+    //----------------------------------
+    private void getLoudnessEnhancer(int session) {
+        releaseLoudnessEnhancer();
+        try {
+            mLE = new LoudnessEnhancer(session);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "getLoudnessEnhancer() LoudnessEnhancer not found exception: ", e);
+        } catch (UnsupportedOperationException e) {
+            Log.e(TAG, "getLoudnessEnhancer() Effect library not loaded exception: ", e);
+        }
+        assertNotNull("could not create LoudnessEnhancer", mLE);
+    }
+
+    private void releaseLoudnessEnhancer() {
+        if (mLE != null) {
+            mLE.release();
+            mLE = null;
+        }
+    }
+}
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