Video4Linux issues
I'm having some rather odd problems with my webcam (PWC) and the 2.4.5 kernel. Under most webcam apps, I get nothing but black (00) pixels; on my own, I discovered:
using the read() method, nothing but zeroes are being dumped.
using the mmap() method via VIDIOCGMAP, the buffers aren't being overwritten AT ALL. (buffer writes go unmodified.)
However, one app (gcam) works perfectly. I've tried RGB24, YUV420, and YUV420-planar modes, all with the same result, to ensure that the camera color/brightness/gamma/etc aren't producing a black image.
Any ideas? I know the driver changed in 2.4.5, but gcam still works perfectly...
using the read() method, nothing but zeroes are being dumped.
using the mmap() method via VIDIOCGMAP, the buffers aren't being overwritten AT ALL. (buffer writes go unmodified.)
However, one app (gcam) works perfectly. I've tried RGB24, YUV420, and YUV420-planar modes, all with the same result, to ensure that the camera color/brightness/gamma/etc aren't producing a black image.
Any ideas? I know the driver changed in 2.4.5, but gcam still works perfectly...
