OpenCV and libdc1394

Hi! 
 
I want to use libdc1394 to grab images from my imitech-1394 camera
into OpenCV.
I guess that after calling 
 
dc1394_bayer_decoding_8bit(dc1394_video_get_buffer(m_current_camera),
reinterpret_cast<unsigned char*>(img.m_img->imageData), m_size.width,
m_size.height, DC1394_COLOR_FILTER_GBRG, DC1394_BAYER_METHOD_NEAREST); 
 
I should have a new frame in img.m_img->imageDate (where m_img is an
ipl-image created by OpenCV). 
But the sad thing is: the image I see is just black with a strange
color-pattern. 
Is there any easy way to make OpenCV and libdc1394 work properly
together? 
 
Thanks a lot: 
 
snellius 








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