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-rw-r--r--jni/filters/highlight.c40
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diff --git a/jni/filters/highlight.c b/jni/filters/highlight.c
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+/*
+ * Copyright (C) 2013 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 <math.h>
+#include "filters.h"
+
+void JNIFUNCF(ImageFilterHighlights, nativeApplyFilter, jobject bitmap,
+ jint width, jint height, jfloatArray luminanceMap){
+ char* destination = 0;
+ AndroidBitmap_lockPixels(env, bitmap, (void**) &destination);
+ unsigned char * rgb = (unsigned char * )destination;
+ int i;
+ int len = width * height * 4;
+ jfloat* lum = (*env)->GetFloatArrayElements(env, luminanceMap,0);
+ unsigned short * hsv = (unsigned short *)malloc(3*sizeof(short));
+
+ for (i = 0; i < len; i+=4)
+ {
+ rgb2hsv(rgb,i,hsv,0);
+ int v = clampMax(hsv[0],4080);
+ hsv[0] = (unsigned short) clampMax(lum[((255*v)/4080)]*4080,4080);
+ hsv2rgb(hsv,0, rgb,i);
+ }
+
+ free(hsv);
+ AndroidBitmap_unlockPixels(env, bitmap);
+}