net.doo.snap.camera

Interface PreviewBuffer

public interface PreviewBuffer

Manages access to preview buffer of the Camera

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	PreviewBuffer.FrameHandler Handles camera preview frames

Method Summary

Methods

Modifier and Type	Method and Description
void	addFrameHandler(PreviewBuffer.FrameHandler frameHandler) Registers PreviewBuffer.FrameHandler which will receive preview frames from camera.
void	removeFrameHandler(PreviewBuffer.FrameHandler frameHandler) Unregisters PreviewBuffer.FrameHandler.

Method Detail

addFrameHandler

void addFrameHandler(PreviewBuffer.FrameHandler frameHandler)

Registers PreviewBuffer.FrameHandler which will receive preview frames from camera.

Note, that handlers can intercept frame by returning true from PreviewBuffer.FrameHandler.handleFrame(byte[], int, int, int). In such case no other handler will receive callbacks for current frame. Therefore, order in which handlers are added matters.

All callbacks are invoked from the worker thread, so it is safe to perform "heavy" operations.

Parameters:

frameHandler - handler which will receive preview frames. Must not be null. If it was already registered before, nothing happens.

removeFrameHandler

void removeFrameHandler(PreviewBuffer.FrameHandler frameHandler)

Unregisters PreviewBuffer.FrameHandler.

Parameters:

frameHandler - handler to unregister. If it was not registered before, nothing happens.