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patch for the issue 258 by oduis

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This commit is contained in:
Andrey Skvortsov
2010-10-15 21:10:36 -07:00
parent 04f101d24f
commit 8bc162f408
1 changed files with 798 additions and 792 deletions
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6
rtengine/imageio.cc
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@@ -516,6 +516,12 @@ int ImageIO::saveJPEG (Glib::ustring fname, int quality) {
jpeg_set_defaults (&cinfo);
cinfo.write_JFIF_header = FALSE;
// compute optimal Huffman coding tables for the image. Bit slower to generate, but size of result image is a bit less (default was FALSE)
cinfo.optimize_coding = TRUE;
// Since math coprocessors are common these days, FLOAT should be a bit more accurate AND fast (default is ISLOW)
// (machine dependency is not really an issue, since we all run on x86 and having exactly the same file is not a requirement)
cinfo.dct_method = JDCT_FLOAT;
if (quality>=0 && quality<=100)
jpeg_set_quality (&cinfo, quality, true);