diff options
| -rw-r--r-- | doc/HISTORY | 7 | ||||
| -rw-r--r-- | lib/libppmcmap.c | 15 |
2 files changed, 18 insertions, 4 deletions
diff --git a/doc/HISTORY b/doc/HISTORY index c40a7b12..8628a508 100644 --- a/doc/HISTORY +++ b/doc/HISTORY @@ -15,6 +15,10 @@ not yet BJH Release 10.56.00 pnmtops: Add PBM fast path. Thanks Prophet of the Way <afu@wta.att.ne.jp>. + libppmcmap and most programs that use color maps: speedup with + new color hash function. Thanks Prophet of the Way + <afu@wta.att.ne.jp>. + pnmtopng: fix bug: with -alpha specifying a mask which contains no fully transparent area, output PNG is fully opaque. Introduced in 10.29. @@ -25,6 +29,9 @@ not yet BJH Release 10.56.00 pnmquant: work with older Perl that doesn't have 3-argument open. Thanks Slaven Rezic <srezic@iconmobile.com>. + ppmcie: fix bug: fails with "X coordinate out of range" error. + Introduced in 10.51. + Build: To find libpng, use the Pkgconfig database entry instead of libpng-config if it is available. diff --git a/lib/libppmcmap.c b/lib/libppmcmap.c index 1fd87441..1f7e459d 100644 --- a/lib/libppmcmap.c +++ b/lib/libppmcmap.c @@ -20,10 +20,17 @@ #define HASH_SIZE 20023 -#define ppm_hashpixel(p) ( ( ( (long) PPM_GETR(p) * 33023 + \ - (long) PPM_GETG(p) * 30013 + \ - (long) PPM_GETB(p) * 27011 ) \ - & 0x7fffffff ) % HASH_SIZE ) + + +static __inline__ unsigned int +ppm_hashpixel(pixel const p) { + + return (unsigned int) (PPM_GETR(p) * 33 * 33 + + PPM_GETG(p) * 33 + + PPM_GETB(p)) % HASH_SIZE; +} + + colorhist_vector ppm_computecolorhist( pixel ** const pixels, |