com.yoti.mobile.android.commons.util

Class PictureHelper

java.lang.Object

com.yoti.mobile.android.commons.util.PictureHelper

public class PictureHelper
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
PictureHelper()

Method Summary

Modifier and Type	Method and Description
static int	calculateInSampleSize(android.graphics.BitmapFactory.Options options, int reqWidth, int reqHeight) Calculate an inSampleSize for use in a BitmapFactory.Options object when decoding bitmaps using the decode* methods from BitmapFactory.
static android.graphics.Bitmap	compressBitmap(android.graphics.Bitmap original, int compressRatio)
static java.io.File	createImageFile()
static java.lang.String	createRandomImageFilename()
static android.graphics.Bitmap	createYotiPatternMaskSquares(android.graphics.Bitmap foreground, android.graphics.RectF[] rects)
static android.graphics.Bitmap	decodeBase64(java.lang.String input)
static android.graphics.Bitmap	decodeBase64ToBitmap(java.lang.String input)
static android.graphics.Bitmap	decodeSampledBitmapFromFile(java.lang.String filename, int reqWidth, int reqHeight)
static android.graphics.Bitmap	decodeSampledBitmapFromResource(android.content.res.Resources res, int resId, int reqWidth, int reqHeight)
static java.lang.String	encodeBitmapFileTobase64(java.lang.String filePath)
static java.lang.String	encodeBitmapTobase64(android.graphics.Bitmap image)
static java.lang.String	encodeJpegFileTobase64(java.lang.String filePath)
static java.lang.String	encodeTobase64(android.graphics.Bitmap image)
static java.lang.ref.WeakReference<android.graphics.Bitmap>	flipMirroredBitmap(java.lang.ref.WeakReference<android.graphics.Bitmap> mFaceBitmap, int width, int height)
static java.lang.String	getDocumentFilePathInInternalStorage(android.content.Context context)
static java.lang.String	getTemporalPathForBitmapWithFileName(java.lang.String fileName)
static byte[]	loadAndRotateBitmapFromFileToByteArray(java.lang.String filePath, float angle, int newWidth, int newHeight, int compression, boolean useJpeg) Load a bitmap from a file, rotate it and scale it while keepung the aspect ratio
static byte[]	loadBitmapFromFileToByteArray(java.lang.String filePath) Read bitmap file to bytes, doesn't do any checking for valid bitmap
static android.graphics.Bitmap	loadBitmapFromView(android.view.View v)
static byte[]	loadImageInByteArrayFormat(java.lang.String filePath)
static android.graphics.Bitmap	punchAHoleInABitmap(android.graphics.Bitmap foreground, float holeRadius, float yRatio)
static android.graphics.Bitmap	readBitmapFromFile(java.lang.String filePath)
static java.lang.String	rotateAndEncodeBitmapFileTobase64(java.lang.String filePath, float angle, int newWidth, int newHeight, int compression, boolean useJpeg)
static void	saveBitmapToFile(android.graphics.Bitmap bitmap)
static boolean	saveBitmapToFile(android.graphics.Bitmap bitmap, java.lang.String filename)
static boolean	saveBitmapToFile(android.graphics.Bitmap bitmap, java.lang.String filename, android.graphics.Bitmap.CompressFormat format, int compressionRatio)
static java.lang.String	saveBitmapToInternalStorage(android.content.Context context, android.graphics.Bitmap bitmap, java.lang.String filename, android.graphics.Bitmap.CompressFormat format, int compressionRatio)
static boolean	saveBitmapToPNGFile(android.graphics.Bitmap bitmap, java.lang.String filename)
static boolean	saveByteArrayToFile(byte[] bytes, java.lang.String filename)
static java.lang.ref.WeakReference<android.graphics.Bitmap>	scaleBitmapFromFile(java.lang.String imageFilePath, int percentage)
static java.lang.ref.WeakReference<android.graphics.Bitmap>	scaleBitmapKeepingAspectRatio(java.lang.ref.WeakReference<android.graphics.Bitmap> bitmapOrg, int width, int height)
static android.graphics.Bitmap	YuvToBitmap(android.content.Context ctx, byte[] yuvData, int width, int height) Renderscript based YUV converter.
static android.graphics.Bitmap	YuvToBitmapCompat(byte[] yuvData, int width, int height)
static android.graphics.Bitmap	YuvToBitmapViaRgb(byte[] yuvData, int width, int height)
static int[]	YuvToRGB(byte[] yuvData, int width, int height)

Methods inherited from class java.lang.Object

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

Constructor Detail

PictureHelper

public PictureHelper()

Method Detail

saveBitmapToFile

public static boolean saveBitmapToFile(android.graphics.Bitmap bitmap,
                                       java.lang.String filename,
                                       android.graphics.Bitmap.CompressFormat format,
                                       int compressionRatio)

saveBitmapToInternalStorage

public static java.lang.String saveBitmapToInternalStorage(android.content.Context context,
                                                           android.graphics.Bitmap bitmap,
                                                           java.lang.String filename,
                                                           android.graphics.Bitmap.CompressFormat format,
                                                           int compressionRatio)

saveBitmapToFile

public static boolean saveBitmapToFile(android.graphics.Bitmap bitmap,
                                       java.lang.String filename)

loadBitmapFromFileToByteArray

@Nullable
public static byte[] loadBitmapFromFileToByteArray(java.lang.String filePath)

Read bitmap file to bytes, doesn't do any checking for valid bitmap

Parameters:

filePath - path on disk to load

Returns:

file bytes, or null on read error

loadAndRotateBitmapFromFileToByteArray

public static byte[] loadAndRotateBitmapFromFileToByteArray(java.lang.String filePath,
                                                            float angle,
                                                            int newWidth,
                                                            int newHeight,
                                                            int compression,
                                                            boolean useJpeg)

Load a bitmap from a file, rotate it and scale it while keepung the aspect ratio

Parameters:

filePath - where to load the bitmap

angle - the rotation angle, can be negative

newWidth - the new width, can 0 or negative if which case it will be ignored

newHeight - the new height, can 0 or negative if which case it will be ignored

compression - compress the picture to the expected ratio

useJpeg - true the pivture will a JPEG false default encoding : PNG

Returns:

the loaded bitmap bytes

encodeBitmapFileTobase64

public static java.lang.String encodeBitmapFileTobase64(java.lang.String filePath)

rotateAndEncodeBitmapFileTobase64

public static java.lang.String rotateAndEncodeBitmapFileTobase64(java.lang.String filePath,
                                                                 float angle,
                                                                 int newWidth,
                                                                 int newHeight,
                                                                 int compression,
                                                                 boolean useJpeg)

encodeBitmapTobase64

public static java.lang.String encodeBitmapTobase64(android.graphics.Bitmap image)

decodeBase64ToBitmap

public static android.graphics.Bitmap decodeBase64ToBitmap(java.lang.String input)

flipMirroredBitmap

public static java.lang.ref.WeakReference<android.graphics.Bitmap> flipMirroredBitmap(java.lang.ref.WeakReference<android.graphics.Bitmap> mFaceBitmap,
                                                                                      int width,
                                                                                      int height)

scaleBitmapKeepingAspectRatio

public static java.lang.ref.WeakReference<android.graphics.Bitmap> scaleBitmapKeepingAspectRatio(java.lang.ref.WeakReference<android.graphics.Bitmap> bitmapOrg,
                                                                                                 int width,
                                                                                                 int height)

scaleBitmapFromFile

public static java.lang.ref.WeakReference<android.graphics.Bitmap> scaleBitmapFromFile(java.lang.String imageFilePath,
                                                                                       int percentage)

loadImageInByteArrayFormat

public static byte[] loadImageInByteArrayFormat(java.lang.String filePath)

punchAHoleInABitmap

public static android.graphics.Bitmap punchAHoleInABitmap(android.graphics.Bitmap foreground,
                                                          float holeRadius,
                                                          float yRatio)

loadBitmapFromView

@Nullable
public static android.graphics.Bitmap loadBitmapFromView(android.view.View v)

Parameters:

v - - the view from which the bitmap should be create

Returns:

the bitmap created fro view and drown back onto the view. null if either the width or the height of the view <= 0

decodeSampledBitmapFromFile

public static android.graphics.Bitmap decodeSampledBitmapFromFile(java.lang.String filename,
                                                                  int reqWidth,
                                                                  int reqHeight)

calculateInSampleSize

public static int calculateInSampleSize(android.graphics.BitmapFactory.Options options,
                                        int reqWidth,
                                        int reqHeight)

Calculate an inSampleSize for use in a BitmapFactory.Options object when decoding bitmaps using the decode* methods from BitmapFactory. This implementation calculates the closest inSampleSize that is a power of 2 and will result in the final decoded bitmap having a width and height equal to or larger than the requested width and height.

Parameters:

options - An options object with out* params already populated (run through a decode* method with inJustDecodeBounds==true

reqWidth - The requested width of the resulting bitmap

reqHeight - The requested height of the resulting bitmap

Returns:

The value to be used for inSampleSize

createRandomImageFilename

public static java.lang.String createRandomImageFilename()

getDocumentFilePathInInternalStorage

public static java.lang.String getDocumentFilePathInInternalStorage(android.content.Context context)

createImageFile

public static java.io.File createImageFile()
                                    throws java.io.IOException

Throws:

java.io.IOException

saveBitmapToPNGFile

public static boolean saveBitmapToPNGFile(android.graphics.Bitmap bitmap,
                                          java.lang.String filename)

saveByteArrayToFile

public static boolean saveByteArrayToFile(byte[] bytes,
                                          java.lang.String filename)

compressBitmap

public static android.graphics.Bitmap compressBitmap(android.graphics.Bitmap original,
                                                     int compressRatio)

encodeJpegFileTobase64

public static java.lang.String encodeJpegFileTobase64(java.lang.String filePath)

encodeTobase64

public static java.lang.String encodeTobase64(android.graphics.Bitmap image)

decodeBase64

public static android.graphics.Bitmap decodeBase64(java.lang.String input)

getTemporalPathForBitmapWithFileName

public static java.lang.String getTemporalPathForBitmapWithFileName(java.lang.String fileName)

YuvToBitmapCompat

@Nullable
public static android.graphics.Bitmap YuvToBitmapCompat(byte[] yuvData,
                                                                  int width,
                                                                  int height)

YuvToRGB

public static int[] YuvToRGB(byte[] yuvData,
                             int width,
                             int height)

YuvToBitmapViaRgb

public static android.graphics.Bitmap YuvToBitmapViaRgb(byte[] yuvData,
                                                        int width,
                                                        int height)

YuvToBitmap

@Nullable
public static android.graphics.Bitmap YuvToBitmap(android.content.Context ctx,
                                                            byte[] yuvData,
                                                            int width,
                                                            int height)

Renderscript based YUV converter. If no Context is available, or API is < 17, use #YuvToBitmapCompat.

saveBitmapToFile

public static void saveBitmapToFile(android.graphics.Bitmap bitmap)

createYotiPatternMaskSquares

public static android.graphics.Bitmap createYotiPatternMaskSquares(android.graphics.Bitmap foreground,
                                                                   android.graphics.RectF[] rects)

decodeSampledBitmapFromResource

public static android.graphics.Bitmap decodeSampledBitmapFromResource(android.content.res.Resources res,
                                                                      int resId,
                                                                      int reqWidth,
                                                                      int reqHeight)

readBitmapFromFile

public static android.graphics.Bitmap readBitmapFromFile(java.lang.String filePath)