RELAND: ShapeDetection: use mojom::Bitmap for mojo interface.

services/shape_detection/android/java/src/org/chromium/shape_detection/SharedBufferUtils.java

-// Copyright 2017 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.shape_detection;
-
-import android.graphics.Bitmap;
-
-import com.google.android.gms.vision.Frame;
-
-import org.chromium.mojo.system.MojoException;
-import org.chromium.mojo.system.SharedBufferHandle;
-import org.chromium.mojo.system.SharedBufferHandle.MapFlags;
-
-import java.nio.ByteBuffer;
-
-/**
- * Utility class to convert a SharedBufferHandle to a GMS core YUV Frame.
- */
-public class SharedBufferUtils {
-    public static Frame convertToFrame(
-            SharedBufferHandle frameData, final int width, final int height) {
-        final long numPixels = (long) width * height;
-        // TODO(mcasas): https://crbug.com/670028 homogeneize overflow checking.
-        if (!frameData.isValid() || width <= 0 || height <= 0 || numPixels > (Long.MAX_VALUE / 4)) {
-            return null;
-        }
-
-        // Mapping |frameData| will fail if the intended mapped size is larger
-        // than its actual capacity, which is limited by the appropriate
-        // mojo::edk::Configuration entry.
-        ByteBuffer imageBuffer = frameData.map(0, numPixels * 4, MapFlags.none());
-        if (imageBuffer.capacity() <= 0) {
-            return null;
-        }
-
-        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
-        bitmap.copyPixelsFromBuffer(imageBuffer);
-        try {
-            frameData.unmap(imageBuffer);
-            frameData.close();
-        } catch (MojoException e) {
-        }
-
-        try {
-            // This constructor implies a pixel format conversion to YUV.
-            return new Frame.Builder().setBitmap(bitmap).build();
-        } catch (IllegalArgumentException | IllegalStateException ex) {
-            return null;
-        }
-    }
-}