Package com.libremobileos.yifan.face

Class ImageUtils

java.lang.Object

com.libremobileos.yifan.face.ImageUtils

public class ImageUtils
extends Object

Method Summary

Modifier and Type	Method	Description
static void	convertYUV420ToARGB8888(byte[] yData, byte[] uData, byte[] vData, int width, int height, int yRowStride, int uvRowStride, int uvPixelStride, int[] out)
static Matrix	getTransformationMatrix(int srcWidth, int srcHeight, int dstWidth, int dstHeight, int applyRotation, boolean maintainAspectRatio)	Returns a transformation matrix from one reference frame into another.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getTransformationMatrix

public static Matrix getTransformationMatrix(int srcWidth,
                                             int srcHeight,
                                             int dstWidth,
                                             int dstHeight,
                                             int applyRotation,
                                             boolean maintainAspectRatio)

Returns a transformation matrix from one reference frame into another. Handles cropping (if maintaining aspect ratio is desired) and rotation.

Parameters:

srcWidth - Width of source frame.

srcHeight - Height of source frame.

dstWidth - Width of destination frame.

dstHeight - Height of destination frame.

applyRotation - Amount of rotation to apply from one frame to another. Must be a multiple of 90.

maintainAspectRatio - If true, will ensure that scaling in x and y remains constant, cropping the image if necessary.

Returns:

The transformation fulfilling the desired requirements.

convertYUV420ToARGB8888

public static void convertYUV420ToARGB8888(byte[] yData,
                                           byte[] uData,
                                           byte[] vData,
                                           int width,
                                           int height,
                                           int yRowStride,
                                           int uvRowStride,
                                           int uvPixelStride,
                                           int[] out)