add filters
bug:7234321
Change-Id: I4c9695c3ad90fcb7f4d67d40faa0a7da85f99030
diff --git a/jni/Android.mk b/jni/Android.mk
index 92789c1..f2f714d 100644
--- a/jni/Android.mk
+++ b/jni/Android.mk
@@ -36,6 +36,7 @@
filters/geometry.c \
filters/vignette.c \
filters/redEyeMath.c \
+ filters/fx.c \
filters/redeye.c
LOCAL_CFLAGS += -ffast-math -O3 -funroll-loops
diff --git a/jni/filters/fx.c b/jni/filters/fx.c
new file mode 100644
index 0000000..24fa5e0
--- /dev/null
+++ b/jni/filters/fx.c
@@ -0,0 +1,88 @@
+/*
+ * 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 "filters.h"
+
+__inline__ int interp(unsigned char *src, int p , int *off ,float dr,float dg, float db){
+
+ float fr00 = (src[p+off[0]])*(1-dr)+(src[p+off[1]])*dr;
+ float fr01 = (src[p+off[2]])*(1-dr)+(src[p+off[3]])*dr;
+ float fr10 = (src[p+off[4]])*(1-dr)+(src[p+off[5]])*dr;
+ float fr11 = (src[p+off[6]])*(1-dr)+(src[p+off[7]])*dr;
+ float frb0 = fr00 * (1-db)+fr01*db;
+ float frb1 = fr10 * (1-db)+fr11*db;
+ float frbg = frb0 * (1-dg)+frb1*dg;
+
+ return (int)frbg ;
+}
+
+void JNIFUNCF(ImageFilterFx, nativeApplyFilter, jobject bitmap, jint width, jint height, jobject lutbitmap,jint lutwidth, jint lutheight )
+{
+ char* destination = 0;
+ char* lut = 0;
+ AndroidBitmap_lockPixels(env, bitmap, (void**) &destination);
+ AndroidBitmap_lockPixels(env, lutbitmap, (void**) &lut);
+ unsigned char * rgb = (unsigned char * )destination;
+ unsigned char * lutrgb = (unsigned char * )lut;
+ int lutdim_r = lutheight;
+ int lutdim_g = lutheight;;
+ int lutdim_b = lutwidth/lutheight;;
+ int STEP = 4;
+
+ int off[8] = {
+ 0,
+ STEP*1,
+ STEP*lutdim_r,
+ STEP*(lutdim_r + 1),
+ STEP*(lutdim_r*lutdim_b),
+ STEP*(lutdim_r*lutdim_b+1),
+ STEP*(lutdim_r*lutdim_b+lutdim_r),
+ STEP*(lutdim_r*lutdim_b+lutdim_r + 1)
+ };
+
+ float scale_R = (lutdim_r-1.f)/256.f;
+ float scale_G = (lutdim_g-1.f)/256.f;
+ float scale_B = (lutdim_b-1.f)/256.f;
+
+ int i;
+ int len = width * height * STEP;
+
+ for (i = 0; i < len; i+=STEP)
+ {
+ int r = rgb[RED];
+ int g = rgb[GREEN];
+ int b = rgb[BLUE];
+
+ float fb = b*scale_B;
+ float fg = g*scale_G;
+ float fr = r*scale_R;
+ int lut_b = (int)fb;
+ int lut_g = (int)fg;
+ int lut_r = (int)fr;
+ int p = lut_r+lut_b*lutdim_r+lut_g*lutdim_r*lutdim_b;
+ p*=STEP;
+ float dr = fr-lut_r;
+ float dg = fg-lut_g;
+ float db = fb-lut_b;
+ rgb[RED] = clamp(interp(lutrgb,p ,off,dr,dg,db));
+ rgb[GREEN] = clamp(interp(lutrgb,p+1,off,dr,dg,db));
+ rgb[BLUE] = clamp(interp(lutrgb,p+2,off,dr,dg,db));
+
+ }
+
+ AndroidBitmap_unlockPixels(env, bitmap);
+ AndroidBitmap_unlockPixels(env, lutbitmap);
+}