Android video capture: Set camera parameters continuous focus mode on, where supported

media/base/android/java/src/org/chromium/media/VideoCaptureCamera.java

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.media;
 
 import android.content.Context;
 import android.graphics.SurfaceTexture;
 import android.opengl.GLES20;
 import android.util.Log;
@@ skipping 147 matching lines @@
         Log.d(TAG, "allocate: matched (" + matchedWidth + "x" + matchedHeight + ")");
 
         if (parameters.isVideoStabilizationSupported()) {
             Log.d(TAG, "Image stabilization supported, currently: "
                     + parameters.getVideoStabilization() + ", setting it.");
             parameters.setVideoStabilization(true);
         } else {
             Log.d(TAG, "Image stabilization not supported.");
         }
 
+        if (parameters.getSupportedFocusModes().contains(
+                android.hardware.Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
+            parameters.setFocusMode(android.hardware.Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
+        } else {
+            Log.d(TAG, "Continuous focus mode not supported.");
+        }
+
         setCaptureParameters(matchedWidth, matchedHeight, chosenFrameRate, parameters);
         parameters.setPictureSize(matchedWidth, matchedHeight);
         parameters.setPreviewSize(matchedWidth, matchedHeight);
         parameters.setPreviewFpsRange(chosenFpsRange[0], chosenFpsRange[1]);
         parameters.setPreviewFormat(mCaptureFormat.mPixelFormat);
         try {
             mCamera.setParameters(parameters);
         } catch (RuntimeException ex) {
             Log.e(TAG, "setParameters: " + ex);
             return false;
@@ skipping 124 matching lines @@
                     break;
                 case Surface.ROTATION_0:
                 default:
                     orientation = 0;
                     break;
             }
         }
         return orientation;
     }
 }