lejos.hardware.video

Interface Video

public interface Video

Field Summary

Fields

Modifier and Type	Field and Description
static int	FIELD_ANY
static int	FIELD_INTERLACED
static int	FIELD_NONE
static int	PIX_FMT_JPEG
static int	PIX_FMT_MJPEG
static int	PIX_FMT_YUYV

Method Summary

Modifier and Type	Method and Description
void	close() Close the webcam, the device will not be available after this call
byte[]	createFrame() Create a byte array suitable for holding a single video frame
int	getHeight() return the frame height
int	getWidth() Return the frame width
int	grabFrame(byte[] frame) Grab a single frame from the device and store the image into the supplied array
void	open(int w, int h) Open the device and make it available for use, specify the desired frame size.
void	open(int w, int h, int format, int field, int fps) Open the device and make it available for use, specify the desired frame size.

Field Detail

PIX_FMT_MJPEG

static final int PIX_FMT_MJPEG

PIX_FMT_JPEG

static final int PIX_FMT_JPEG

PIX_FMT_YUYV

static final int PIX_FMT_YUYV

FIELD_ANY

static final int FIELD_ANY

See Also:

Constant Field Values

FIELD_NONE

static final int FIELD_NONE

See Also:

Constant Field Values

FIELD_INTERLACED

static final int FIELD_INTERLACED

See Also:

Constant Field Values

Method Detail

open

void open(int w,
          int h,
          int format,
          int field,
          int fps)
   throws java.io.IOException

Open the device and make it available for use, specify the desired frame size. Note that the actual frame size may be adjusted to conform to the capabilities of the device.

Parameters:

w - the desired frame width

h - the desired frame height

format - desired pixel format

field - desired field layout

fps - the desired frame rate

Throws:

java.io.IOException

open

void open(int w,
          int h)
   throws java.io.IOException

Open the device and make it available for use, specify the desired frame size. Note that the actual frame size may be adjusted to conform to the capabilities of the device.

Parameters:

w - the desired frame width

h - the desired frame height

Throws:

java.io.IOException

grabFrame

int grabFrame(byte[] frame)
       throws java.io.IOException

Grab a single frame from the device and store the image into the supplied array

Parameters:

frame - array to store the frame

Returns:

the size of the frame grabbed (in bytes)

Throws:

java.io.IOException

close

void close()
    throws java.io.IOException

Close the webcam, the device will not be available after this call

Throws:

java.io.IOException

createFrame

byte[] createFrame()

Create a byte array suitable for holding a single video frame

Returns:

the frame array

getWidth

int getWidth()

Return the frame width

Returns:

width in pixels

getHeight

int getHeight()

return the frame height

Returns:

height in pixels