Video Gala Frame Grabber device driver

1
Video Gala Frame Grabber device driver

• Project Presentation
• Sean Toh
• Atulya Mahajan

2
Presentation Outline

• gt Goals
• gt Methodology
• gt Achievements
• gt Screen Shots
• gt Source Tree
• gt Known Bugs
• gt Next Steps

3
Goals

• gt Produce a device driver for the video gala
  gray scale and color frame grabber devices
• gt Desired features
• - Integrated support for color and grayscale
• - Support for dual ported and single ported cards
• - Support for Interrupt driven I/O
• - Streaming I/O ( this hasnt been implemented so
  far for the color devices)
• - Video 4 Linux 2 API support

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Methodology

• gt Started from the bare bones driver provided by
  Dr Baker
• gt Initial changes to make the module stable
• gt Incorporated the support for color reads
• gt Incorporated the streaming I/O ( Grey scale)
  from device driver produced in summer 2003
• gt Added support for color streaming I/O
• gt Modified read/streaming functionality to work
  with the interrupt driven cards
• gt Implemented the support for V4L API
• gt Journal

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Achievements

• gt We achieved almost all of our goals
• - Streaming I/O
• - Blocking reads
• - Interrupt driven I/O
• - Support for V4L
• - Support for color cards
• - Improvements to the demo program
• - Added one ioctl to turn the output upside
  down. Necessity is the mother of invention they
  say !

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Screen Shot - Grey Scale (512 X 480)
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Screen Shot - Color (640 X 480)
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Video Output

• Grey Scale output

• Color Output

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Source Tree

• Module code - HRT
• - hrt.c
• - hrt.h
• - Makefile
• - README

• Demo program
• - hrtdemo.c
• - hrtdemo.h
• - hrt.h
• - Makefile
• - README

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Known Bugs / Issues

• gt Speed issues not yet perfect. Can be
  improved further
• gt Test program crashes sometimes. Not
  repeatable. Source not yet known
• gt Support for video 4 Linux not completely
  implemented yet
• gt Poor quality of inverted mode display

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Next Steps

• gt Optimization of timing issues to achieve
  higher frame rates
• gt Completion of video 4 Linux support
• gt Optimization of the interrupt driven mode
• gt Solve known bugs / stabilize the module
• gt Improve the test program

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Thank you !!!