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Diffstat (limited to 'tests/glean/wrtiff.cpp')
| -rw-r--r-- | tests/glean/wrtiff.cpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/tests/glean/wrtiff.cpp b/tests/glean/wrtiff.cpp new file mode 100644 index 00000000..f4b95bac --- /dev/null +++ b/tests/glean/wrtiff.cpp @@ -0,0 +1,134 @@ +// BEGIN_COPYRIGHT +// +// Copyright (C) 1999 Allen Akin All Rights Reserved. +// +// Permission is hereby granted, free of charge, to any person +// obtaining a copy of this software and associated documentation +// files (the "Software"), to deal in the Software without +// restriction, including without limitation the rights to use, +// copy, modify, merge, publish, distribute, sublicense, and/or +// sell copies of the Software, and to permit persons to whom the +// Software is furnished to do so, subject to the following +// conditions: +// +// The above copyright notice and this permission notice shall be +// included in all copies or substantial portions of the +// Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY +// KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE +// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR +// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ALLEN AKIN BE +// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +// AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF +// OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +// DEALINGS IN THE SOFTWARE. +// +// END_COPYRIGHT + + + + +// Implementation of image data, attribute, and I/O + +#include "image.h" +#include "tiffio.h" + +namespace GLEAN { + +/////////////////////////////////////////////////////////////////////////////// +// writeTIFF - write image to TIFF file +/////////////////////////////////////////////////////////////////////////////// +void +Image::writeTIFF(const char* filename) { + static uint16 unassocAlpha[] = {EXTRASAMPLE_UNASSALPHA}; + GLsizei rowStep = rowSizeInBytes(); + + TIFF* tf = TIFFOpen(filename, "w"); + if (!tf) + throw CantOpen(filename); + + TIFFSetField(tf, TIFFTAG_IMAGELENGTH, height()); + TIFFSetField(tf, TIFFTAG_IMAGEWIDTH, width()); + TIFFSetField(tf, TIFFTAG_XRESOLUTION, 100.0); + TIFFSetField(tf, TIFFTAG_YRESOLUTION, 100.0); + TIFFSetField(tf, TIFFTAG_RESOLUTIONUNIT, RESUNIT_INCH); + TIFFSetField(tf, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT); + TIFFSetField(tf, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG); + TIFFSetField(tf, TIFFTAG_COMPRESSION, COMPRESSION_NONE); + // LZW would have been acceptable, were it not for patent + // issues. + TIFFSetField(tf, TIFFTAG_ROWSPERSTRIP, height()); + + switch (format()) { + case GL_LUMINANCE: + TIFFSetField(tf, TIFFTAG_SAMPLESPERPIXEL, 1); + TIFFSetField(tf, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK); + break; + case GL_LUMINANCE_ALPHA: + TIFFSetField(tf, TIFFTAG_SAMPLESPERPIXEL, 2); + TIFFSetField(tf, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK); + TIFFSetField(tf, TIFFTAG_EXTRASAMPLES, 1, unassocAlpha); + break; + case GL_RGB: + TIFFSetField(tf, TIFFTAG_SAMPLESPERPIXEL, 3); + TIFFSetField(tf, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB); + break; + case GL_RGBA: + TIFFSetField(tf, TIFFTAG_SAMPLESPERPIXEL, 4); + TIFFSetField(tf, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB); + TIFFSetField(tf, TIFFTAG_EXTRASAMPLES, 1, unassocAlpha); + break; + default: + TIFFClose(tf); + throw BadFormat(format()); + } + + switch (type()) { + case GL_BYTE: + TIFFSetField(tf, TIFFTAG_BITSPERSAMPLE, 8); + TIFFSetField(tf, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_INT); + break; + case GL_UNSIGNED_BYTE: + TIFFSetField(tf, TIFFTAG_BITSPERSAMPLE, 8); + TIFFSetField(tf, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT); + break; + case GL_SHORT: + TIFFSetField(tf, TIFFTAG_BITSPERSAMPLE, 16); + TIFFSetField(tf, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_INT); + break; + case GL_UNSIGNED_SHORT: + TIFFSetField(tf, TIFFTAG_BITSPERSAMPLE, 16); + TIFFSetField(tf, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT); + break; + case GL_INT: + TIFFSetField(tf, TIFFTAG_BITSPERSAMPLE, 32); + TIFFSetField(tf, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_INT); + break; + case GL_UNSIGNED_INT: + TIFFSetField(tf, TIFFTAG_BITSPERSAMPLE, 32); + TIFFSetField(tf, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT); + break; + case GL_FLOAT: + TIFFSetField(tf, TIFFTAG_BITSPERSAMPLE, 32); + TIFFSetField(tf, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_IEEEFP); + break; + default: + TIFFClose(tf); + throw BadType(type()); + } + + { + // Write rows in reverse order, so that the usual OpenGL + // orientation won't result in an upside-down image for + // naive TIFF readers: + char* row = pixels() + (height() - 1) * rowStep; + for (GLsizei r = 0; r < height(); ++r, row -= rowStep) + TIFFWriteScanline(tf, row, r, 0); + } + + TIFFClose(tf); +}; // Image::writeTIFF + + +}; // namespace GLEAN |