Merge "Check Visualizer.getWaveForm input array size" into udc-qpr-dev

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

@@ -455,11 +455,13 @@ public class Visualizer {
      * a number of consecutive 8-bit (unsigned) mono PCM samples equal to the capture size returned
      * by {@link #getCaptureSize()}.
      * <p>This method must be called when the Visualizer is enabled.
-     * @param waveform array of bytes where the waveform should be returned
+     * @param waveform array of bytes where the waveform should be returned, array length must be
+     * at least equals to the capture size returned by {@link #getCaptureSize()}.
      * @return {@link #SUCCESS} in case of success,
      * {@link #ERROR_NO_MEMORY}, {@link #ERROR_INVALID_OPERATION} or {@link #ERROR_DEAD_OBJECT}
      * in case of failure.
      * @throws IllegalStateException
+     * @throws IllegalArgumentException
      */
     public int getWaveForm(byte[] waveform)
     throws IllegalStateException {
@@ -467,6 +469,12 @@ public class Visualizer {
             if (mState != STATE_ENABLED) {
                 throw(new IllegalStateException("getWaveForm() called in wrong state: "+mState));
             }
+            int captureSize = getCaptureSize();
+            if (captureSize > waveform.length) {
+                throw(new IllegalArgumentException("getWaveForm() called with illegal size: "
+                                                   + waveform.length + " expecting at least "
+                                                   + captureSize + " bytes"));
+            }
             return native_getWaveForm(waveform);
         }
     }