| /* |
| * 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" |
| |
| void JNIFUNCF(ImageFilterNegative, nativeApplyFilter, jobject bitmap, jint width, jint height) |
| { |
| char* destination = 0; |
| AndroidBitmap_lockPixels(env, bitmap, (void**) &destination); |
| |
| int tot_len = height * width * 4; |
| int i; |
| char * dst = destination; |
| for (i = 0; i < tot_len; i+=4) { |
| dst[RED] = 255 - dst[RED]; |
| dst[GREEN] = 255 - dst[GREEN]; |
| dst[BLUE] = 255 - dst[BLUE]; |
| } |
| AndroidBitmap_unlockPixels(env, bitmap); |
| } |