Package com.digimarc.capture.camera

Class ImageData

java.lang.Object

com.digimarc.capture.camera.ImageData

public class ImageData
extends Object

Container for image data. In most cases the data can be either array of bytes or array of Planes but not both.

Field Summary

Fields

Modifier and Type	Field	Description
android.hardware.camera2.CaptureResult	mCaptureMeta	Camera2 device meta data.
float[]	mGains	Meta-data gains and color correction data.
final int	mHeight	Height of image data
final Object	mImageData	Type of image data
final HelperCaptureFormat	mImageFormat	HelperCaptureFormat of image data
final boolean	mIsBitmap	Is image data a formatted Bitmap ?
final int	mRowBytes	Bytes per row of image data
float[]	mTransform	Meta-data color correction data.
final int	mWidth	Width of image data

Constructor Summary

Constructors

Constructor	Description
ImageData(Object data, int _width, int _height, int _rowBytes, HelperCaptureFormat _imageFormat, boolean _isBitmap)
ImageData(Object data, ImageData source)

Method Summary

Modifier and Type	Method	Description
static ImageData	attachToImage(android.media.Image image)	Creates an ImageData object and initializes it with the contents of a Camera2 Image buffer.
int	getImageBufferSize()	Get the image buffer size needed to create a copy of this image.
boolean	isRepackageRequired()	The internal readers within DM SDK require ImageData with a BufferType of ImagePlane[].

Methods inherited from class java.lang.Object

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

Field Details

mImageData

public final Object mImageData

Type of image data

mWidth

public final int mWidth

Width of image data

mHeight

public final int mHeight

Height of image data

mRowBytes

public final int mRowBytes

Bytes per row of image data

mImageFormat

public final HelperCaptureFormat mImageFormat

HelperCaptureFormat of image data

mIsBitmap

public final boolean mIsBitmap

Is image data a formatted Bitmap ?

mCaptureMeta

@Nullable
public android.hardware.camera2.CaptureResult mCaptureMeta

Camera2 device meta data. Only required for raw-sensor processing.

mGains

@Nullable
public float[] mGains

Meta-data gains and color correction data. For Internal use or file-based testing only.

mTransform

@Nullable
public float[] mTransform

Meta-data color correction data. For Internal use or file-based testing only.

Constructor Details

ImageData

public ImageData(@NonNull
 Object data,
 int _width,
 int _height,
 int _rowBytes,
 @NonNull
 HelperCaptureFormat _imageFormat,
 boolean _isBitmap)

ImageData

public ImageData(@NonNull
 Object data,
 @NonNull
 ImageData source)

Method Details

attachToImage

@NonNull
public static ImageData attachToImage(@NonNull
 android.media.Image image)

Creates an ImageData object and initializes it with the contents of a Camera2 Image buffer. The data within the Image is used as it stands - new buffers or copies of the data are not created. The image will become invalid once Image.close() is called.

Parameters:

image - Camera2 Image buffer

Returns:

An ImageData object that wraps the passed in image.

isRepackageRequired

public boolean isRepackageRequired()

The internal readers within DM SDK require ImageData with a BufferType of ImagePlane[]. The ImagePlanes also need to have their buffers allocated as direct buffers. This method checks the content of the image to determine whether it will need to be repackaged before being passed to the readers.

Returns:

True if the image needs repackaging, false otherwise.

getImageBufferSize

public int getImageBufferSize()

Get the image buffer size needed to create a copy of this image. For images that are holding a byte[] this will be the size of the array. For images holding an ImagePlane[] it will be the size of the buffer in the first plane.

Returns:

Size needed to copy this image.