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| author | Tor Andersson <tor@ghostscript.com> | 2010-10-20 23:28:28 +0000 |
|---|---|---|
| committer | Tor Andersson <tor@ghostscript.com> | 2010-10-20 23:28:28 +0000 |
| commit | 6324164812f0952e9352fb24f8d8f1d103f52707 (patch) | |
| tree | 226b4bd7f2aabcb252ee5187ab33c1ee5af36d8e | |
| parent | 3a67269b466ada017058faa8ebed2df10f12c5f4 (diff) | |
| download | mupdf-6324164812f0952e9352fb24f8d8f1d103f52707.tar.xz | |
Special case the component scaling for Lab image data when color converting.
| -rw-r--r-- | fitz/res_colorspace.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/fitz/res_colorspace.c b/fitz/res_colorspace.c index f770bbcb..9d4d7bc6 100644 --- a/fitz/res_colorspace.c +++ b/fitz/res_colorspace.c @@ -347,10 +347,29 @@ fz_stdconvpixmap(fz_pixmap *src, fz_pixmap *dst) srcn = ss->n; dstn = ds->n; - /* TODO: special case Lab colorspace (scaling of components to float) */ + /* Special case for Lab colorspace (scaling of components to float) */ + if (!strcmp(ss->name, "Lab") && srcn == 3) + { + for (y = 0; y < src->h; y++) + { + for (x = 0; x < src->w; x++) + { + srcv[0] = *s++ / 255.0f * 100; + srcv[1] = *s++ - 128; + srcv[2] = *s++ - 128; + + fz_convertcolor(ss, srcv, ds, dstv); + + for (k = 0; k < dstn; k++) + *d++ = dstv[k] * 255; + + *d++ = *s++; + } + } + } /* Brute-force for small images */ - if (src->w * src->h < 256) + else if (src->w * src->h < 256) { for (y = 0; y < src->h; y++) { |