ImageCapture: Implement focus mode for Android and Fake Video Capture Devices

media/capture/video/android/java/src/org/chromium/media/VideoCaptureCamera2.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.annotation.TargetApi;
 import android.content.Context;
 import android.graphics.ImageFormat;
 import android.graphics.Rect;
@@ skipping 554 matching lines @@
         // The Min and Max zoom are returned as x100 by the API to avoid using floating point. There
         // is no min-zoom per se, so clamp it to always 100 (TODO(mcasas): make const member).
         final int minZoom = 100;
         final int maxZoom = Math.round(mMaxZoom * 100);
 
         // Width Ratio x100 is used as measure of current zoom.
         final int currentZoom = 100 * mPreviewRequest.get(CaptureRequest.SCALER_CROP_REGION).width()
                 / cameraCharacteristics.get(CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE)
                           .width();
 
-        return new PhotoCapabilities(maxZoom, minZoom, currentZoom);
+        final int focusMode = mPreviewRequest.get(CaptureRequest.CONTROL_AF_MODE);
+        Log.d(TAG, "focusMode " + focusMode);
+        final boolean isFocusManual = (focusMode == CameraMetadata.CONTROL_AF_MODE_OFF)
+                || (focusMode == CameraMetadata.CONTROL_AF_MODE_EDOF);
+
+        return new PhotoCapabilities(maxZoom, minZoom, currentZoom, !isFocusManual);
     }
 
     @Override
     public void setZoom(int zoom) {
         final CameraCharacteristics cameraCharacteristics = getCameraCharacteristics(mContext, mId);
         final Rect canvas =
                 cameraCharacteristics.get(CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE);
 
         final float normalizedZoom = Math.max(100, Math.min(zoom, mMaxZoom * 100)) / 100;
         final float cropFactor = (normalizedZoom - 1) / (2 * normalizedZoom);
@@ skipping 60 matching lines @@
             return false;
         }
         return true;
     }
 
     @Override
     public void deallocate() {
         Log.d(TAG, "deallocate");
     }
 }