Re: [libdc1394-devel] Re: iSight and grab_color_image or grab_grey_image [solved]

[Tom <to...@ab...>]

Hello,

Here is how I solved (worked around) the problem of capturing frames 
with iSight:
I used the code proposed by Nicholas Humfrey on this list. I modified 
it to add new modes: dump raw YUV 4:2:2 or 4:1:1 data. My modifications 
to the grab_image_dma are available at:
http://www.abracode.com/CleanHands/libdc1394-1.0.0-with-dma-example.tgz
I also modified examples/Makefile.am and examples/Makefile.in for 
compilation of grab_image_dma program when compiling the main libdc1394 
library.
Then I use "grab_image_dma --422" to dump raw 4:2:2 data.
Next I do the conversion from YUV to RGB using a fragment of code found 
at:
http://fourcc.org/fccyvrgb.php
I modified this code for 640x480 resolution. The modified code with one 
example of dump data file and result ppm is available at:
http://www.abracode.com/CleanHands/yuv2ppm_for_iSight_with_example.tgz

Thanks,
Tom
Clean Hands
http://www.cleanhands.biz