Index of /~baker/devices/projects/atuhua

Name	Last modified	Size

Parent Directory		-
atuhua.tgz	20-Jun-2005 10:41	85K
color.avi	21-Jun-2005 11:02	4.0M
framegrabber_final.ppt	20-Jun-2005 10:41	244K
grey.avi	21-Jun-2005 11:02	1.4M
hrt/	18-Jun-2005 11:40	-
journal.htm	21-Jun-2005 11:07	10K
mail	20-Jun-2005 10:41	451K
main.gif	20-Jun-2005 10:42	92K
main.h1.gif	20-Jun-2005 10:42	92K
main.h2.jpg	20-Jun-2005 10:42	38K
main.h3.jpg	20-Jun-2005 10:42	11K
main.h4.jpg	20-Jun-2005 10:42	8.1K
main.jpg	20-Jun-2005 10:42	38K
main_002.jpg	20-Jun-2005 10:42	11K
main_003.jpg	20-Jun-2005 10:42	8.1K

Video Gala frame grabber device driver - Atulya / Sean

Pixel Smart frame grabber device driver project

Linux Kernel Programming - COP5641

Summer 2005

Florida State University

Project team : Atulya Mahajan, Sean Toh

- mahajan at cs dot fsu dot edu

- huanktoh at cs dot fsu dot edu

Goals

Produce a device driver for the Pixel Smart 512-8 gray scale and Video Gala color frame grabber devices.

Desired features

Integrated support for color and grayscale devices
Support for dual ported and single ported cards
Support for interrupt driven I/O
Streaming I/O
Implementation of Video4Linux API support

Methodology

Started from the bare bones driver provided by Dr Baker
Initial changes to make the module stable
Incorporated the support for color reads
Incorporated streaming I/O from the device driver produced in summer 2003
Added support for color streaming I/O
Modified read/streaming functionality to work with the interrupt driven cards
Implemented support for Video4Linux 2 API

Journal

Achievements

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 test program
Additional feature - added one ioctl call to turn the image upside down. In our case at least, we needed that one since our camera was mounted upside down !!

Screen Shots

Grey Scale - 512 X 480

Color - 640 X 480

Video output

A video recording of the video display produced by the driver ( using another camera to record our output !)

Greyscale Color

Source tree

Our work consisted of two parts - a device driver module, and a test program

The device driver code is in the hrt directory

hrt.c

hrt.h

Makefile

README

The test program is called hrtdemo. This is an updated version of the test program used by teams in earlier years

hrtdemo.c

hrtdemo.h.

hrt.h

Makefile

README

Known Bugs

Speed issues: It is not yet perfect. Can be improved further

Test program crashes sometimes. Not repeatable. Source not yet known

Support for video 4 Linux not completely implemented yet

Poor quality of inverted mode display

Next Steps

Optimization of timing parameters to achieve higher frame rates

Completion of Video 4 Linux support

Optimization of the interrupt driven I/O

Solve known bugs/ Stabilize the module

Improve the test program

06/19/2005