ARCameraStream Class Reference

Inherits PreviewCallback.

Public Member Functions
void	setCameraTransform (float[]transform)
float[]	getCameraTransform ()
ARTexture	getTexture ()
void	setTexture (ARTexture texture)
ARCameraTextureMaterial	getMaterial ()
void	setMaterial (ARCameraTextureMaterial material)
	ARCameraStream ()
void	setSurfaceTexture (SurfaceTexture surfaceTexture)
void	onPreviewFrame (final byte[] data, Camera arg1)
void	initialise ()
void	start ()
void	stop ()
int	getWidth ()
int	getHeight ()
void	rotateCameraPreview (int degrees)
void	addListener (ARCameraStreamListener listener)
void	removeListener (ARCameraStreamListener listener)
void	notifyListenersUpdateFrame (final byte[] data)

Static Public Member Functions
static ARCameraStream	getInstance ()

Public Attributes
ARView	mArView

Detailed Description

A manager class for handling the camera stream. It has default camera stream dimensions of 640*480.

Constructor & Destructor Documentation

ARCameraStream()

ARCameraStream.ARCameraStream

(

)

Initialises the camera stream. This is handled automatically.

Member Function Documentation

addListener()

void ARCameraStream.addListener

(

ARCameraStreamListener

listener

)

Add ARCameraStreamListener to list of listeners.

Parameters

listener

getCameraTransform()

float [] ARCameraStream.getCameraTransform

(

)

Returns the transform of the camera associated with the ARCameraStream as a float array.

Returns

The camera transform of the ARCameraStream.

getHeight()

int ARCameraStream.getHeight

(

)

Returns the height of the camera image.

Example of use:

int imageHeight = ARCameraStream.getInstance().getHeight();

Returns

The height of the camera image, in pixels.

getInstance()

static ARCameraStream ARCameraStream.getInstance ( )

static

Gets the instance of the camera stream singleton. The ARCameraStream is initialised when this is first called.

Returns

The singleton instance of the ARCameraStream.

getMaterial()

ARCameraTextureMaterial ARCameraStream.getMaterial

(

)

Return the texture material of ARCameraStream.

Returns

ARCameraTextureMaterial

getTexture()

ARTexture ARCameraStream.getTexture

(

)

Returns the texture of the ARCameraStream.

Returns

The texture of the current ARCameraStream frame.

getWidth()

int ARCameraStream.getWidth

(

)

Returns the width of the camera image.

Returns

The width of the camera image, in pixels.

initialise()

void ARCameraStream.initialise

(

)

Initialises ARCameraStream.

notifyListenersUpdateFrame()

void ARCameraStream.notifyListenersUpdateFrame

(

final byte[]

data

)

Notifies listeners that new frame has been received. Sends camera frame to listeners.

Parameters

data	Camera preview frame.

onPreviewFrame()

void ARCameraStream.onPreviewFrame	(	final byte[]	data,
		Camera	arg1
	)

Android camera interface method for receiving a camera preview frame.

Parameters

data	An array of bytes representing the image frame.
arg1	Reference to the camera.

removeListener()

void ARCameraStream.removeListener

(

ARCameraStreamListener

listener

)

Remove ARCameraStreamListener from list of listeners.

Parameters

listener

setCameraTransform()

void ARCameraStream.setCameraTransform

(

float[]

transform

)

Sets the camera transform of the ARCameraStream. Used to transform from 2d coodinates to texture coordinates.

Example of use:

float[] cameraTransform = mCameraSurfaceTexture.getTransformMatrix(m);
ARCameraStream.getInstance().setCameraTransform(cameraTransform);

Parameters

transform

The float array to set the camera's transform with.

setMaterial()

void ARCameraStream.setMaterial

(

ARCameraTextureMaterial

material

)

Set ARCameraStream's ARCameraTextureMaterial.

Parameters

material

setSurfaceTexture()

void ARCameraStream.setSurfaceTexture

(

SurfaceTexture

surfaceTexture

)

Sets SurfaceTexture for ARCameraStream. This is the texture used for the camera preview.

Parameters

surfaceTexture

The SurfaceTexture for ARCameraStream.

setTexture()

void ARCameraStream.setTexture

(

ARTexture

texture

)

Set the ARCameraStream texture which is updated each frame.

Parameters

texture

start()

void ARCameraStream.start

(

)

Starts the camera stream. This is handled automatically when the ARActivity enters the foreground. This method sets up the camera texture that is drawn to the screen.

stop()

void ARCameraStream.stop

(

)

Stops the camera stream input and releases the camera. This is handled automatically when the user leaves the ARActivity.

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The documentation for this class was generated from the following file:

• ARCameraStream.java