Add Shadow feature

bug:7234321
Change-Id: Ib0d4db773486e469ed818385b68b7b907070c297

1 files changed, 39 insertions, 0 deletions

diff --git a/jni/filters/shadows.c b/jni/filters/shadows.c
new file mode 100644
index 000000000..da3e33cf9
--- /dev/null
+++ b/jni/filters/shadows.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 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(ImageFilterShadows, nativeApplyFilter, jobject bitmap, jint width, jint height, jshortArray vlut)
+ {
+     char* destination = 0;
+     AndroidBitmap_lockPixels(env, bitmap, (void**) &destination);
+     unsigned char * rgb = (unsigned char * )destination;
+     int i;
+     int len = width * height * 4;
+     short* lut = (*env)->GetShortArrayElements(env, vlut,0);
+     unsigned short * hsv = (unsigned short *)malloc(3*sizeof(short));
+     for (i = 0; i < len; i+=4)
+     {
+       rgb2hsv(rgb,i,hsv,0);
+       hsv[0] = lut[hsv[0]];
+       hsv2rgb(hsv,0, rgb,i);
+     }
+
+     (*env)->ReleaseShortArrayElements(env, vlut, lut, 0);
+     free(lut);
+     AndroidBitmap_unlockPixels(env, bitmap);
+ }