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From Christophe Loustaunau, "For our application, we need to write tiff file in floats. I have change a little bit the readerWritterTiff :

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It check the data type of the image ( img.getDataType() ) and if it's GL_FLOAT :It save the tiff with float values.
Otherwise it does the same thing as before."
This commit is contained in:
Robert Osfield
2008-07-11 19:43:01 +00:00
parent 0e2dea9a39
commit 360e7629d0
1 changed files with 13 additions and 1 deletions
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14
src/osgPlugins/tiff/ReaderWriterTIFF.cpp
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@@ -689,6 +689,7 @@ class ReaderWriterTIFF : public osgDB::ReaderWriter
TIFF *image;
int samplesPerPixel;
int bitsPerSample;
uint16 photometric;
image = TIFFClientOpen("outputstream", "w", (thandle_t)&fout,
@@ -728,9 +729,20 @@ class ReaderWriterTIFF : public osgDB::ReaderWriter
break;
}
switch(img.getDataType()){
case GL_FLOAT:
TIFFSetField(image, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_IEEEFP);
TIFFSetField(image, TIFFTAG_ROWSPERSTRIP, 1);
bitsPerSample = 32;
break;
default:
bitsPerSample = 8;
break;
}
TIFFSetField(image, TIFFTAG_IMAGEWIDTH,img.s());
TIFFSetField(image, TIFFTAG_IMAGELENGTH,img.t());
TIFFSetField(image, TIFFTAG_BITSPERSAMPLE,8);
TIFFSetField(image, TIFFTAG_BITSPERSAMPLE,bitsPerSample);
TIFFSetField(image, TIFFTAG_SAMPLESPERPIXEL,samplesPerPixel);
TIFFSetField(image, TIFFTAG_PHOTOMETRIC, photometric);
TIFFSetField(image, TIFFTAG_COMPRESSION, COMPRESSION_PACKBITS);