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
22void 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