2004.03.16 08:25 "Re: [Tiff] libtiff and streams", by Andrey Kiselev
So if you want to do streaming you should have a TIFF_2_TIFF-F normalizer in the front of the pipeline and every filter in the pipeline should write according to TIFF-F. But as stated in the RFC the filters should be able to read non TIFF-F conforming TIFF format to be more generic.
And to place IFD in front of image data it should be enough to call TIFFCheckpointDirectory() after setting all tags. Something like:
out = TIFFOpen("out.tif", "w");
TIFFSetField(out, TIFFTAG_IMAGEWIDTH, image_width);
TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, bpp);
TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, spp);
TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
TIFFSetField(out, TIFFTAG_PHOTOMETRIC, photo);
TIFFSetField(out, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, TIFFDefaultStripSize(out, 0));
for (i = 0; i < image_height; i++)
TIFFWriteScanline(out, buf + i * image_width * spp, i, 0);
Just a suggestion fro those, who want to create TIFFs, suitable for sequental access.
Andrey V. Kiselev
Home phone: +7 812 5274898 ICQ# 26871517