1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <math.h> 18 #include "filters.h" 19 20 void JNIFUNCF(ImageFilterHighlights, nativeApplyFilter, jobject bitmap, 21 jint width, jint height, jfloatArray luminanceMap){ 22 char* destination = 0; 23 AndroidBitmap_lockPixels(env, bitmap, (void**) &destination); 24 unsigned char * rgb = (unsigned char * )destination; 25 int i; 26 int len = width * height * 4; 27 jfloat* lum = (*env)->GetFloatArrayElements(env, luminanceMap,0); 28 unsigned short * hsv = (unsigned short *)malloc(3*sizeof(short)); 29 30 for (i = 0; i < len; i+=4) 31 { 32 rgb2hsv(rgb,i,hsv,0); 33 int v = clampMax(hsv[0],4080); 34 hsv[0] = (unsigned short) clampMax(lum[((255*v)/4080)]*4080,4080); 35 hsv2rgb(hsv,0, rgb,i); 36 } 37 38 free(hsv); 39 AndroidBitmap_unlockPixels(env, bitmap); 40 } 41
