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December 2004
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2004.12.09 07:27 "Re: Q: writing tiled TIFFs", by Sachin Garg
> if i have a tile size of 256x256 and a 200x200 image, how should i > fill the tile buffer before calling TIFFWriteTile? LibTiff doesn't give me > any errors when i go to write it, so i assume it's a legal tile size. but, > the image pixels are messed up (looks like row length is wrong somewhere). I am "guessing" that you will probably have to write data for 56 extra pixels after each row. For example if the bit depth is 8 per channel, and its a rgb image, then you must be writting 3 bytes for each pixel. So in the case you describe above, you must be writting 3*200 bytes for each row, now you will probably have to write 3*56 more NULL bytes after each rows data, and then write the next rows data again followed by 3*56 NULL bytes and so on. -- Sachin Garg [India] http://www.geocities.com/schngrg