Android Camera Size Get getUsefulSize(List sizes, int w, int h, int type)

Description

get Useful Size

Declaration

public static Size getUsefulSize(List<Size> sizes, int w, int h,
            int type) 

Method Source Code

//package com.java2s;
import java.util.List;

import android.hardware.Camera.Size;

public class Main {
    public static final int SIZE = 0, RATIO = 1, WIDTH = 2, LB = 3;

    public static Size getUsefulSize(List<Size> sizes, int w, int h,
            int type) {
        Size size;/*from  w  ww .ja v a  2  s.  c o  m*/
        switch (type) {
        case SIZE:
            size = getSizeSIZE(sizes, w, h);
            break;
        case RATIO:
            size = getSizeRATIO(sizes, w, h);
            break;
        case WIDTH:
            size = getSizeWIDTH(sizes, w, h);
            break;
        case LB:
            size = getSizeLB(sizes, w, h);
            break;
        default:
            size = getSizeSIZE(sizes, w, h);
            break;
        }
        return size;
    }

    private static Size getSizeSIZE(List<Size> sizes, int w, int h) {
        Size re = null;
        int wantSize = w * h;
        int minGap = wantSize;
        for (Size size : sizes) {
            if (getSizeGap(size, wantSize) < minGap) {
                re = size;
                minGap = getSizeGap(size, wantSize);
            }
        }
        return re;
    }

    private static Size getSizeRATIO(List<Size> sizes, int w, int h) {
        Size re = null;
        double wantRatio = (double) w / (double) h;
        double minGap = wantRatio;
        for (Size size : sizes) {
            if (getRatioGap(size, wantRatio) < minGap) {
                minGap = getRatioGap(size, wantRatio);
                re = size;
            }
        }
        return re;
    }

    private static Size getSizeWIDTH(List<Size> sizes, int w, int h) {
        int wantWidth = w;
        Size re = null;
        int minGap = w;
        for (Size size : sizes) {
            if (getWidthGap(size, wantWidth) < minGap) {
                minGap = getWidthGap(size, wantWidth);
                re = size;
            }
        }
        return re;
    }

    private static Size getSizeLB(List<Size> sizes, int w, int h) {
        Size re = null;
        int wantSize = w * h;
        int minGap = wantSize;
        for (Size size : sizes) {
            if (getSizeGapValue(size, wantSize) > 0
                    && getSizeGapValue(size, wantSize) < minGap) {
                re = size;
                minGap = getSizeGap(size, wantSize);
            }
        }
        return re;
    }

    private static int getSizeGap(Size size, int wantSize) {
        return Math.abs(size.width * size.height - wantSize);
    }

    private static double getRatioGap(Size size, double wantRatio) {
        double sizeRatio = (double) size.height / (double) size.width;
        return Math.abs(sizeRatio - wantRatio);
    }

    private static int getWidthGap(Size size, int wantWidth) {
        return Math.abs(size.height - wantWidth);
    }

    private static int getSizeGapValue(Size size, int wantSize) {
        return size.width * size.height - wantSize;
    }
}

Related

1. getOptimalPreviewSize(List supportedSizes, int w, int h)
2. getOptimalPreviewSize(int displayOrientation, int width, int height, Camera.Parameters parameters)
3. getBiggestPictureSize( Camera.Parameters parameters)
4. toString(Iterable areas)
5. getSmallestPictureSize( Camera.Parameters parameters)