1 files changed, 40 insertions, 0 deletions
diff --git a/jni/filters/highlight.c b/jni/filters/highlight.c
new file mode 100644
index 000000000..fe9b88f94
--- /dev/null
+++ b/jni/filters/highlight.c
@@ -0,0 +1,40 @@
+/*
+ * 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);
+}