Android: Add FramerateRange class

webrtc/api/java/android/org/webrtc/CameraEnumerator.java

 /*
  *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
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       }
     } catch (Exception e) {
       Logging.e(TAG, "getSupportedFormats() failed on camera index " + cameraId, e);
     }
 
     final long endTimeMs = SystemClock.elapsedRealtime();
     Logging.d(TAG, "Get supported formats for camera index " + cameraId + " done."
         + " Time spent: " + (endTimeMs - startTimeMs) + " ms.");
     return formatList;
   }
+
+  // Convert from int[2] to CaptureFormat.FramerateRange.
+  public static List<CaptureFormat.FramerateRange> convertFramerates(
+      List<int[]> arrayRanges) {
+    final List<CaptureFormat.FramerateRange> ranges = new ArrayList<CaptureFormat.FramerateRange>();
+    for (int[] range : arrayRanges) {
+      ranges.add(new CaptureFormat.FramerateRange(
+          range[android.hardware.Camera.Parameters.PREVIEW_FPS_MIN_INDEX],
+          range[android.hardware.Camera.Parameters.PREVIEW_FPS_MAX_INDEX]));
+    }
+    return ranges;
+  }
 }