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Socket Cam

Outline. ??SampleViewSocketCamSurfaceView. ??. ???????????? canvas ??????,???? canvas ???,??????????????????????? View ? invalidate() ,? Android ???????? ? View.invalidate()?????,Android framework ??? View ? onDraw(),??????????????. SurfaceView (1/2). SurfaceView ?? View,????? buffer,?? s

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Socket Cam

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    1. Socket Cam Kimble Hsu kimble@mail.vnu.edu.tw

    2. Outline ?? SampleView SocketCam SurfaceView

    3. ?? ????????? ??? canvas ??????,???? canvas ???,?????????????? ????????? View ? invalidate() ,? Android ???????? ? View.invalidate()?????,Android framework ??? View ? onDraw(),??????????????

    4. SurfaceView (1/2) SurfaceView ?? View,????? buffer,?? surface? ???? buffer ???? Android framework ?????,????????????,???????? ????????,??? Android framework ???,????? hardware ?????????????? ????????, ?? SurfaceView? ?? SurfaceView ?,canvas ????? onDraw() ????

    5. SurfaceView (2/2) ???? SurfaceView.getHolder() ?? surface holder ,? SurfaceHolder.lockCanvas() ??????????,???? SurfaceHolder.unlockCanvasAndPost() ,?????????? SurfaceHolder.lockCanvas() ????????,?????????????????,????????,?????????,?????????

    6. SampleView Canvas Class (??) Layout Layout?main.xml?? ???SimpleView SampleView Inner class Override onDraw()

    7. Canvas

    8. SampleView

    9. Show Bitmap

    10. SocketCam Drawing 2D graphics Socket Connection Get Input Steam Render to Canvas Exception Handler Webcam Client (Android) Webcam Server (PC) Testing

    11. Drawing 2D graphics Draw your graphics or animations into a View object from your layout. the drawing of your graphics is handled by the system's normal View hierarchy drawing process. Draw your graphics directly to a Canvas. To call the appropriate class's draw() method (passing it your Canvas), or one of the Canvas draw...() methods (like drawPicture()). In doing so, you are also in control of any animation.

    12. Socket Connection HttpCamera SockCamera

    13. Interface CameraSource

    14. SocketCamera

    15. Override Methods

    16. SocketConnection

    17. Exception Handler

    18. Webcam Client (Android)

    19. Uses permission

    20. Webcam Server (PC) Download webcam2000 http://www.webcam2000.info/ Unzip and run WebCam2000.exe

    21. Testing Open Webcam2000 Run Webcam Client (Andriod)

    22. Surface View (1/2) Create a new class Override sufaceCreate

    23. Surface View (2/2) Create MyThread for capture continuing

    24. Reference Android API Demo, BitmapDecode.java WebCam2000, http://www.webcam2000.info/ Live Camera Previews in Android, http://www.tomgibara.com/android/camera-source Surface View http://heaven.branda.to/~thinker/GinGin_CGI.py/show_id_doc/404

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