Unhide Visualizer scaling mode definitions and methods

Unhide Visualizer set/get methods, and associated constant
 definitions.

Change-Id: Iaafe5f7a2f1273f72c3f7f842b416b93614dfa65

Author: jmtrivi

api/current.txt

@@ -11756,18 +11756,22 @@ package android.media.audiofx {
     method public int getFft(byte[]) throws java.lang.IllegalStateException;
     method public static int getMaxCaptureRate();
     method public int getSamplingRate() throws java.lang.IllegalStateException;
+    method public int getScalingMode() throws java.lang.IllegalStateException;
     method public int getWaveForm(byte[]) throws java.lang.IllegalStateException;
     method public void release();
     method public int setCaptureSize(int) throws java.lang.IllegalStateException;
     method public int setDataCaptureListener(android.media.audiofx.Visualizer.OnDataCaptureListener, int, boolean, boolean);
     method public int setEnabled(boolean) throws java.lang.IllegalStateException;
+    method public int setScalingMode(int) throws java.lang.IllegalStateException;
     field public static final int ALREADY_EXISTS = -2; // 0xfffffffe
     field public static final int ERROR = -1; // 0xffffffff
     field public static final int ERROR_BAD_VALUE = -4; // 0xfffffffc
     field public static final int ERROR_DEAD_OBJECT = -7; // 0xfffffff9
     field public static final int ERROR_INVALID_OPERATION = -5; // 0xfffffffb
     field public static final int ERROR_NO_INIT = -3; // 0xfffffffd
     field public static final int ERROR_NO_MEMORY = -6; // 0xfffffffa
+    field public static final int SCALING_MODE_AS_PLAYED = 1; // 0x1
+    field public static final int SCALING_MODE_NORMALIZED = 0; // 0x0
     field public static final int STATE_ENABLED = 2; // 0x2
     field public static final int STATE_INITIALIZED = 1; // 0x1
     field public static final int STATE_UNINITIALIZED = 0; // 0x0

media/java/android/media/audiofx/Visualizer.java

@@ -83,13 +83,11 @@ public class Visualizer {
 
     // to keep in sync with system/media/audio_effects/include/audio_effects/effect_visualizer.h
     /**
-     * @hide
      * Defines a capture mode where amplification is applied based on the content of the captured
      * data. This is the default Visualizer mode, and is suitable for music visualization.
      */
     public static final int SCALING_MODE_NORMALIZED = 0;
     /**
-     * @hide
      * Defines a capture mode where the playback volume will affect (scale) the range of the
      * captured data. A low playback volume will lead to low sample and fft values, and vice-versa.
      */
@@ -316,7 +314,6 @@ public int getCaptureSize()
     }
 
     /**
-     * @hide
      * Set the type of scaling applied on the captured visualization data.
      * @param mode see {@link #SCALING_MODE_NORMALIZED}
      *     and {@link #SCALING_MODE_AS_PLAYED}
@@ -336,7 +333,6 @@ public int setScalingMode(int mode)
     }
 
     /**
-     * @hide
      * Returns the current scaling mode on the captured visualization data.
      * @return the scaling mode, see {@link #SCALING_MODE_NORMALIZED}
      *     and {@link #SCALING_MODE_AS_PLAYED}.