am c79b145f: Merge "camera2-legacy: Workaround max jpeg/preview size AR mismatch" into lmp-dev

import android.hardware.camera2.utils.ArrayUtils;

import android.hardware.camera2.utils.ListUtils;

import android.hardware.camera2.utils.ParamsUtils;

import android.hardware.camera2.utils.SizeAreaComparator;

import android.util.Log;

import android.util.Range;

import android.util.Size;

    static final int UNKNOWN_MODE = -1;

    // Maximum difference between a preview size aspect ratio and a jpeg size aspect ratio

    private static final float PREVIEW_ASPECT_RATIO_TOLERANCE = 0.01f;

    /*

     * Development hijinks: Lie about not supporting certain capabilities

     *

    static final boolean LIE_ABOUT_AWB_STATE = false;

    static final boolean LIE_ABOUT_AWB = false;

    /**

     * Create characteristics for a legacy device by mapping the {@code parameters}

     * and {@code info}

         * remapping to public format constants.

         */

        List<Camera.Size> previewSizes = p.getSupportedPreviewSizes();

        List<Camera.Size> jpegSizes = p.getSupportedPictureSizes();

        /*

         * Work-around for b/17589233:

         * - Some HALs's largest preview size aspect ratio does not match the largest JPEG size AR

         * - This causes a large amount of problems with focus/metering because it's relative to

         *   preview, making the difference between the JPEG and preview viewport inaccessible

         * - This boils down to metering or focusing areas being "arbitrarily" cropped

         *   in the capture result.

         * - Work-around the HAL limitations by removing all of the largest preview sizes

         *   until we get one with the same aspect ratio as the jpeg size.

         */

        {

            SizeAreaComparator areaComparator = new SizeAreaComparator();

            // Sort preview to min->max

            Collections.sort(previewSizes, areaComparator);

            Camera.Size maxJpegSize = SizeAreaComparator.findLargestByArea(jpegSizes);

            float jpegAspectRatio = maxJpegSize.width * 1.0f / maxJpegSize.height;

            if (VERBOSE) {

                Log.v(TAG, String.format("mapScalerStreamConfigs - largest JPEG area %dx%d, AR=%f",

                        maxJpegSize.width, maxJpegSize.height, jpegAspectRatio));

            }

            // Now remove preview sizes from the end (largest->smallest) until aspect ratio matches

            while (!previewSizes.isEmpty()) {

                int index = previewSizes.size() - 1; // max is always at the end

                Camera.Size size = previewSizes.get(index);

                float previewAspectRatio = size.width * 1.0f / size.height;

                if (Math.abs(jpegAspectRatio - previewAspectRatio) >=

                        PREVIEW_ASPECT_RATIO_TOLERANCE) {

                    previewSizes.remove(index); // Assume removing from end is O(1)

                    if (VERBOSE) {

                        Log.v(TAG, String.format(

                                "mapScalerStreamConfigs - removed preview size %dx%d, AR=%f "

                                        + "was not the same",

                                size.width, size.height, previewAspectRatio));

                    }

                } else {

                    break;

                }

            }

            if (previewSizes.isEmpty()) {

                // Fall-back to the original faulty behavior, but at least work

                Log.w(TAG, "mapScalerStreamConfigs - failed to find any preview size matching " +

                        "JPEG aspect ratio " + jpegAspectRatio);

                previewSizes = p.getSupportedPreviewSizes();

            }

            // Sort again, this time in descending order max->min

            Collections.sort(previewSizes, Collections.reverseOrder(areaComparator));

        }

        appendStreamConfig(availableStreamConfigs,

                HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED, previewSizes);

        appendStreamConfig(availableStreamConfigs,

            }

        }

        List<Camera.Size> jpegSizes = p.getSupportedPictureSizes();

        appendStreamConfig(availableStreamConfigs,

                HAL_PIXEL_FORMAT_BLOB, p.getSupportedPictureSizes());

        /*

        if (thumbnailSizes != null) {

            Size[] sizes = convertSizeListToArray(thumbnailSizes);

            Arrays.sort(sizes, new SizeAreaComparator());

            Arrays.sort(sizes, new android.hardware.camera2.utils.SizeAreaComparator());

            m.set(JPEG_AVAILABLE_THUMBNAIL_SIZES, sizes);

        }

    }

/*

 * Copyright (C) 2014 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License

 */

package android.hardware.camera2.legacy;

import android.hardware.Camera;

import java.util.Collections;

import java.util.Comparator;

import java.util.List;

import static com.android.internal.util.Preconditions.*;

/**

 * Comparator for api1 {@link Camera.Size} objects by the area.

 *

 * <p>This comparator totally orders by rectangle area. Tie-breaks on width.</p>

 */

@SuppressWarnings("deprecation")

public class SizeAreaComparator implements Comparator<Camera.Size> {

    /**

     * {@inheritDoc}

     */

    @Override

    public int compare(Camera.Size size, Camera.Size size2) {

        checkNotNull(size, "size must not be null");

        checkNotNull(size2, "size2 must not be null");

        if (size.equals(size2)) {

            return 0;

        }

        long width = size.width;

        long width2 = size2.width;

        long area = width * size.height;

        long area2 = width2 * size2.height;

        if (area == area2) {

            return (width > width2) ? 1 : -1;

        }

        return (area > area2) ? 1 : -1;

    }

    /**

     * Get the largest api1 {@code Camera.Size} from the list by comparing each size's area

     * by each other using {@link SizeAreaComparator}.

     *

     * @param sizes a non-{@code null} list of non-{@code null} sizes

     * @return a non-{@code null} size

     *

     * @throws NullPointerException if {@code sizes} or any elements in it were {@code null}

     */

    public static Camera.Size findLargestByArea(List<Camera.Size> sizes) {

        checkNotNull(sizes, "sizes must not be null");

        return Collections.max(sizes, new SizeAreaComparator());

    }

}