| /* |
| * 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, float scale){ |
| double shadowFilterMap[] = { |
| -0.00591, 0.0001, |
| 1.16488, 0.01668, |
| -0.18027, -0.06791, |
| -0.12625, 0.09001, |
| 0.15065, -0.03897 |
| }; |
| |
| char* destination = 0; |
| AndroidBitmap_lockPixels(env, bitmap, (void**) &destination); |
| unsigned char * rgb = (unsigned char * )destination; |
| int i; |
| double s = (scale>=0)?scale:scale/5; |
| int len = width * height * 4; |
| |
| double *poly = (double *) malloc(5*sizeof(double)); |
| for (i = 0; i < 5; i++) { |
| poly[i] = fastevalPoly(shadowFilterMap+i*2,2 , s); |
| } |
| |
| unsigned short * hsv = (unsigned short *)malloc(3*sizeof(short)); |
| |
| for (i = 0; i < len; i+=4) |
| { |
| rgb2hsv(rgb,i,hsv,0); |
| |
| double v = (fastevalPoly(poly,5,hsv[0]/4080.)*4080); |
| if (v>4080) v = 4080; |
| hsv[0] = (unsigned short) ((v>0)?v:0); |
| |
| hsv2rgb(hsv,0, rgb,i); |
| } |
| |
| free(poly); |
| free(hsv); |
| AndroidBitmap_unlockPixels(env, bitmap); |
| } |