Package com.digimarc.capture.camera

Class BitmapUtils

java.lang.Object

com.digimarc.capture.camera.BitmapUtils

public class BitmapUtils
extends Object

This class provides a series of utility methods for handling camera frames. These methods can be used for converting, rotating and scaling the image data returned in ReaderResult objects.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	BitmapUtils.SCALING_LOGIC

Constructor Summary

Constructors

Constructor	Description
BitmapUtils()

Method Summary

Modifier and Type	Method	Description
static android.graphics.Bitmap	convertRawImageToBitmap(ImageFrame frame)	Convert the supplied image into a bitmap.
static android.graphics.Bitmap	convertRawImageToBitmap(ImageFrame frame, int surfaceRotation)	Convert the supplied image into a bitmap.
static android.graphics.Bitmap	createScaledBitmap(android.graphics.Bitmap unscaledBitmap, int dstWidth, int dstHeight, BitmapUtils.SCALING_LOGIC scalingLogic)	Create a scaled version of the supplied bitmap
static android.graphics.Bitmap	rotateBitmap(android.graphics.Bitmap sourceBitmap, float degree)	Rotate the supplied bitmap.

Methods inherited from class java.lang.Object

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

Constructor Details

BitmapUtils

public BitmapUtils()

Method Details

createScaledBitmap

@Nullable
public static android.graphics.Bitmap createScaledBitmap(@NonNull
 android.graphics.Bitmap unscaledBitmap,
 int dstWidth,
 int dstHeight,
 @NonNull
 BitmapUtils.SCALING_LOGIC scalingLogic)

Create a scaled version of the supplied bitmap

Parameters:

unscaledBitmap - Source bitmap image

dstWidth - Requested width for the scaled bitmap

dstHeight - Requested height for the scaled bitmap

scalingLogic - How should the scaling be performed.

Returns:

A new bitmap matching the supplied size parameters, or null if the operation failed.

rotateBitmap

@Nullable
public static android.graphics.Bitmap rotateBitmap(@NonNull
 android.graphics.Bitmap sourceBitmap,
 float degree)

Rotate the supplied bitmap.

Parameters:

sourceBitmap - Bitmap

degree - Rotation degrees

Returns:

Rotated bitmap or null if the operation failed.

convertRawImageToBitmap

@Nullable
public static android.graphics.Bitmap convertRawImageToBitmap(@NonNull
 ImageFrame frame)

Convert the supplied image into a bitmap. The bitmap will have the same dimensions as provided image frame.

Parameters:

frame - Image data.

Returns:

A bitmap object.

convertRawImageToBitmap

@Nullable
public static android.graphics.Bitmap convertRawImageToBitmap(@NonNull
 ImageFrame frame,
 int surfaceRotation)

Convert the supplied image into a bitmap. The converted image will be rotated according to the surfaceRotation parameter. The bitmap will have the same dimensions as provided image frame.

Parameters:

frame - Image data.

surfaceRotation - Image rotation.

Returns:

A bitmap object.