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// 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
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