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Diffstat (limited to 'jni/filters/hsv.c')
-rw-r--r-- | jni/filters/hsv.c | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/jni/filters/hsv.c b/jni/filters/hsv.c deleted file mode 100644 index aabd053fe..000000000 --- a/jni/filters/hsv.c +++ /dev/null @@ -1,156 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <math.h> -#include "filters.h" - -double fastevalPoly(double *poly,int n, double x){ - - double f =x; - double sum = poly[0]+poly[1]*f; - int i; - for (i = 2; i < n; i++) { - f*=x; - sum += poly[i]*f; - } - return sum; -} - -void rgb2hsv( unsigned char *rgb,int rgbOff,unsigned short *hsv,int hsvOff) -{ - int iMin,iMax,chroma; - int ABITS = 4; - int HSCALE = 256; - - int k1=255 << ABITS; - int k2=HSCALE << ABITS; - - int ri = rgb[rgbOff+0]; - int gi = rgb[rgbOff+1]; - int bi = rgb[rgbOff+2]; - short rv,rs,rh; - - if (ri > gi) { - iMax = MAX (ri, bi); - iMin = MIN (gi, bi); - } else { - iMax = MAX (gi, bi); - iMin = MIN (ri, bi); - } - - chroma = iMax - iMin; - // set value - rv = (short)( iMax << ABITS); - - // set saturation - if (rv == 0) - rs = 0; - else - rs = (short)((k1*chroma)/iMax); - - // set hue - if (rs == 0) - rh = 0; - else { - if ( ri == iMax ) { - rh = (short)( (k2*(6*chroma+gi - bi))/(6*chroma)); - if (rh >= k2) rh -= k2; - } else if (gi == iMax) - rh = (short)( (k2*(2*chroma+bi - ri ))/(6*chroma)); - else // (bi == iMax ) - rh = (short)( (k2*(4*chroma+ri - gi ))/(6*chroma)); - } - hsv[hsvOff+0] = rv; - hsv[hsvOff+1] = rs; - hsv[hsvOff+2] = rh; -} - -void hsv2rgb(unsigned short *hsv,int hsvOff, unsigned char *rgb,int rgbOff) -{ - int ABITS = 4; - int HSCALE = 256; - int m; - int H,X,ih,is,iv; - int k1=255<<ABITS; - int k2=HSCALE<<ABITS; - int k3=1<<(ABITS-1); - int rr=0; - int rg=0; - int rb=0; - short cv = hsv[hsvOff+0]; - short cs = hsv[hsvOff+1]; - short ch = hsv[hsvOff+2]; - - // set chroma and min component value m - //chroma = ( cv * cs )/k1; - //m = cv - chroma; - m = ((int)cv*(k1 - (int)cs ))/k1; - - // chroma == 0 <-> cs == 0 --> m=cv - if (cs == 0) { - rb = ( rg = ( rr =( cv >> ABITS) )); - } else { - ih=(int)ch; - is=(int)cs; - iv=(int)cv; - - H = (6*ih)/k2; - X = ((iv*is)/k2)*(k2- abs(6*ih- 2*(H>>1)*k2 - k2)) ; - - // removing additional bits --> unit8 - X=( (X+iv*(k1 - is ))/k1 + k3 ) >> ABITS; - m=m >> ABITS; - - // ( chroma + m ) --> cv ; - cv=(short) (cv >> ABITS); - switch (H) { - case 0: - rr = cv; - rg = X; - rb = m; - break; - case 1: - rr = X; - rg = cv; - rb = m; - break; - case 2: - rr = m; - rg = cv; - rb = X; - break; - case 3: - rr = m; - rg = X; - rb = cv; - break; - case 4: - rr = X; - rg = m; - rb = cv; - break; - case 5: - rr = cv; - rg = m ; - rb = X; - break; - } - } - rgb[rgbOff+0] = rr; - rgb[rgbOff+1] = rg; - rgb[rgbOff+2] = rb; -} - |