Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import android.graphics.Point;

import java.util.regex.Pattern;

public class Main {
    private static final Pattern COMMA_PATTERN = Pattern.compile(",");

    public static Point getCameraResolution(android.hardware.Camera.Parameters parameters, Point screenResolution) {
        String previewSizeValueString = parameters.get("preview-size-values");
        if (previewSizeValueString == null) {
            previewSizeValueString = parameters.get("preview-size-value");
        }

        Point cameraResolution = null;
        if (previewSizeValueString != null) {
            cameraResolution = findBestPreviewSizeValue(previewSizeValueString, screenResolution);
        }
        if (cameraResolution == null) {
            cameraResolution = new Point((screenResolution.x >> 3) << 3, (screenResolution.y >> 3) << 3);
        }

        return cameraResolution;
    }

    private static Point findBestPreviewSizeValue(CharSequence previewSizeString, Point screenResolution) {
        int bestX = 0;
        int bestY = 0;
        int diff = Integer.MAX_VALUE;
        for (String previewSize : COMMA_PATTERN.split(previewSizeString)) {

            previewSize = previewSize.trim();
            int dimPosition = previewSize.indexOf('x');
            if (dimPosition < 0) {
                continue;
            }

            int newX;
            int newY;
            try {
                newX = Integer.parseInt(previewSize.substring(0, dimPosition));
                newY = Integer.parseInt(previewSize.substring(dimPosition + 1));
            } catch (NumberFormatException nfe) {
                continue;
            }

            int newDiff = Math.abs(newX - screenResolution.x) + Math.abs(newY - screenResolution.y);
            if (newDiff == 0) {
                bestX = newX;
                bestY = newY;
                break;
            } else if (newDiff < diff) {
                bestX = newX;
                bestY = newY;
                diff = newDiff;
            }

        }
        if (bestX > 0 && bestY > 0) {
            return new Point(bestX, bestY);
        }
        return null;
    }
}