| /* |
| * Copyright (C) 2011 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 <android/log.h> |
| |
| int invert_process(const char** inputs, |
| const int* input_sizes, |
| int input_count, |
| char* output, |
| int output_size, |
| void* user_data) { |
| // Make sure we have exactly one input |
| if (input_count != 1) |
| return 0; |
| |
| // Make sure sizes match up |
| if (input_sizes[0] != output_size) |
| return 0; |
| |
| // Get the input and output pointers |
| const char* input_ptr = inputs[0]; |
| char* output_ptr = output; |
| if (!input_ptr || !output_ptr) |
| return 0; |
| |
| // Run the inversion |
| int i; |
| for (i = 0; i < output_size; ++i) |
| *(output_ptr++) = 255 - *(input_ptr++); |
| |
| return 1; |
| } |
| |