diff options
Diffstat (limited to 'jni/filters/wbalance.c')
-rw-r--r-- | jni/filters/wbalance.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/jni/filters/wbalance.c b/jni/filters/wbalance.c deleted file mode 100644 index 2b92b9978..000000000 --- a/jni/filters/wbalance.c +++ /dev/null @@ -1,169 +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 "filters.h" - -void estmateWhite(unsigned char *src, int len, int *wr, int *wb, int *wg){ - - int STEP = 4; - int RANGE = 256; - int *histR = (int *) malloc(256*sizeof(int)); - int *histG = (int *) malloc(256*sizeof(int)); - int *histB = (int *) malloc(256*sizeof(int)); - int i; - for (i = 0; i < 255; i++) { - histR[i] = histG[i] = histB[i] =0; - } - - for (i = 0; i < len; i+=STEP) { - histR[(src[RED])]++; - histG[(src[GREEN])]++; - histB[(src[BLUE])]++; - } - int min_r = -1, min_g = -1,min_b = -1; - int max_r = 0, max_g = 0,max_b = 0; - int sum_r = 0,sum_g=0,sum_b=0; - - for (i = 1; i < RANGE-1; i++) { - int r = histR[i]; - int g = histG[i]; - int b = histB[i]; - sum_r += r; - sum_g += g; - sum_b += b; - - if (r>0){ - if (min_r < 0) min_r = i; - max_r = i; - } - if (g>0){ - if (min_g < 0) min_g = i; - max_g = i; - } - if (b>0){ - if (min_b < 0) min_b = i; - max_b = i; - } - } - - int sum15r = 0,sum15g=0,sum15b=0; - int count15r = 0,count15g=0,count15b=0; - int tmp_r = 0,tmp_g=0,tmp_b=0; - - for (i = RANGE-2; i >0; i--) { - int r = histR[i]; - int g = histG[i]; - int b = histB[i]; - tmp_r += r; - tmp_g += g; - tmp_b += b; - - if ((tmp_r > sum_r/20) && (tmp_r < sum_r/5)) { - sum15r += r*i; - count15r += r; - } - if ((tmp_g > sum_g/20) && (tmp_g < sum_g/5)) { - sum15g += g*i; - count15g += g; - } - if ((tmp_b > sum_b/20) && (tmp_b < sum_b/5)) { - sum15b += b*i; - count15b += b; - } - - } - free(histR); - free(histG); - free(histB); - - if ((count15r>0) && (count15g>0) && (count15b>0) ){ - *wr = sum15r/count15r; - *wb = sum15g/count15g; - *wg = sum15b/count15b; - }else { - *wg = *wb = *wr=255; - } -} - -void estmateWhiteBox(unsigned char *src, int iw, int ih, int x,int y, int *wr, int *wb, int *wg){ - int r; - int g; - int b; - int sum; - int xp,yp; - int bounds = 5; - if (x<0) x = bounds; - if (y<0) y = bounds; - if (x>=(iw-bounds)) x = (iw-bounds-1); - if (y>=(ih-bounds)) y = (ih-bounds-1); - int startx = x - bounds; - int starty = y - bounds; - int endx = x + bounds; - int endy = y + bounds; - - for(yp= starty;yp<endy;yp++) { - for(xp= startx;xp<endx;xp++) { - int i = 4*(xp+yp*iw); - r += src[RED]; - g += src[GREEN]; - b += src[BLUE]; - sum++; - } - } - *wr = r/sum; - *wg = g/sum; - *wb = b/sum; -} - -void JNIFUNCF(ImageFilterWBalance, nativeApplyFilter, jobject bitmap, jint width, jint height, int locX,int locY) -{ - char* destination = 0; - AndroidBitmap_lockPixels(env, bitmap, (void**) &destination); - int i; - int len = width * height * 4; - unsigned char * rgb = (unsigned char * )destination; - int wr; - int wg; - int wb; - - if (locX==-1) - estmateWhite(rgb,len,&wr,&wg,&wb); - else - estmateWhiteBox(rgb, width, height,locX,locY,&wr,&wg,&wb); - - int min = MIN(wr, MIN(wg, wb)); - int max = MAX(wr, MAX(wg, wb)); - float avg = (min+max)/2.f; - float scaleR = avg/wr; - float scaleG = avg/wg; - float scaleB = avg/wb; - - for (i = 0; i < len; i+=4) - { - int r = rgb[RED]; - int g = rgb[GREEN]; - int b = rgb[BLUE]; - - float Rc = r*scaleR; - float Gc = g*scaleG; - float Bc = b*scaleB; - - rgb[RED] = clamp(Rc); - rgb[GREEN] = clamp(Gc); - rgb[BLUE] = clamp(Bc); - } - AndroidBitmap_unlockPixels(env, bitmap); -} |