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| author | Tor Andersson <tor.andersson@artifex.com> | 2011-03-31 03:18:51 +0200 |
|---|---|---|
| committer | Tor Andersson <tor.andersson@artifex.com> | 2011-03-31 03:18:51 +0200 |
| commit | b3f90095897b64f854efc4b2f37df428a71fd508 (patch) | |
| tree | 27ad639a052b967e1fdc03f7d58ff63b5b0a8f46 /fitz/res_pixmap.c | |
| parent | 4f484b32f3cf8682180ccb9e36f929edff175498 (diff) | |
| download | mupdf-b3f90095897b64f854efc4b2f37df428a71fd508.tar.xz | |
xps: Clean up image loading code, and handle images with alpha.
Diffstat (limited to 'fitz/res_pixmap.c')
| -rw-r--r-- | fitz/res_pixmap.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fitz/res_pixmap.c b/fitz/res_pixmap.c index e70d084d..b37b7a3e 100644 --- a/fitz/res_pixmap.c +++ b/fitz/res_pixmap.c @@ -97,6 +97,24 @@ fz_clearpixmapwithcolor(fz_pixmap *pix, int value) } } +void +fz_premultiplypixmap(fz_pixmap *pix) +{ + unsigned char *s = pix->samples; + unsigned char a; + int k, x, y; + for (y = 0; y < pix->h; y++) + { + for (x = 0; x < pix->w; x++) + { + a = s[pix->n - 1]; + for (k = 0; k < pix->n - 1; k++) + s[k] = fz_mul255(s[k], a); + s += pix->n; + } + } +} + fz_bbox fz_boundpixmap(fz_pixmap *pix) { |