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 <stdlib.h>
19
20 #include "filters.h"
21
JNIFUNCF(ImageFilterHighlights,nativeApplyFilter,jobject bitmap,jint width,jint height,jfloatArray luminanceMap)22 void JNIFUNCF(ImageFilterHighlights, nativeApplyFilter, jobject bitmap,
23 jint width, jint height, jfloatArray luminanceMap){
24 char* destination = 0;
25 AndroidBitmap_lockPixels(env, bitmap, (void**) &destination);
26 unsigned char * rgb = (unsigned char * )destination;
27 int i;
28 int len = width * height * 4;
29 jfloat* lum = (*env)->GetFloatArrayElements(env, luminanceMap,0);
30 unsigned short * hsv = (unsigned short *)malloc(3*sizeof(short));
31
32 for (i = 0; i < len; i+=4)
33 {
34 rgb2hsv(rgb,i,hsv,0);
35 int v = clampMax(hsv[0],4080);
36 hsv[0] = (unsigned short) clampMax(lum[((255*v)/4080)]*4080,4080);
37 hsv2rgb(hsv,0, rgb,i);
38 }
39
40 free(hsv);
41 AndroidBitmap_unlockPixels(env, bitmap);
42 }
43