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
20void 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