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| author | Simon Bünzli <zeniko@gmail.com> | 2014-05-07 15:09:22 +0200 |
|---|---|---|
| committer | Simon Bünzli <zeniko@gmail.com> | 2014-05-07 15:09:22 +0200 |
| commit | 45307629cef494a2b35329f16b7a3d09f7da222e (patch) | |
| tree | 1188ecbcb25dfe69ff414069e9b9de5ac35740e6 /source/fitz/load-png.c | |
| parent | 6834b1f9181dad2455d56682d7998671a2e79a33 (diff) | |
| download | mupdf-45307629cef494a2b35329f16b7a3d09f7da222e.tar.xz | |
Correctly round PNG image resolution
Currently, png_read_phys always rounds the resolution down. Many images
have a resolution just slightly shy of 96 DPI and are thus rendered too
large when they're resized from 95 to match the required 96 for output.
Diffstat (limited to 'source/fitz/load-png.c')
| -rw-r--r-- | source/fitz/load-png.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/source/fitz/load-png.c b/source/fitz/load-png.c index 984dbed2..d897b5be 100644 --- a/source/fitz/load-png.c +++ b/source/fitz/load-png.c @@ -360,8 +360,8 @@ png_read_phys(struct info *info, unsigned char *p, unsigned int size) fz_throw(info->ctx, FZ_ERROR_GENERIC, "pHYs chunk is the wrong size"); if (p[8] == 1) { - info->xres = getuint(p) * 254 / 10000; - info->yres = getuint(p + 4) * 254 / 10000; + info->xres = (getuint(p) * 254 + 5000) / 10000; + info->yres = (getuint(p + 4) * 254 + 5000) / 10000; } } |