size of the image data is greater than the actual image size. This
causes the memcpy call to go out of the array bounds. I modified the
code so that it copies the data during the iteration, instead of
memcpy'ing. This fixes the problems i was having.
If you are curious, the writer was crashing when trying to write an
RGB image that was 2050 x 1280. You might be able to reproduce it by
allocating an empty image of that size and writing it to a file."
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