1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef ZERO_FILTER_H_ 18#define ZERO_FILTER_H_ 19 20#include "SimpleFilter.h" 21 22namespace android { 23 24struct ZeroFilter : public SimpleFilter { 25public: 26 ZeroFilter() : mInvertData(false) {}; 27 28 virtual status_t start() { return OK; }; 29 virtual void reset() {}; 30 virtual status_t setParameters(const sp<AMessage> &msg); 31 virtual status_t processBuffers( 32 const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer); 33 34protected: 35 virtual ~ZeroFilter() {}; 36 37private: 38 bool mInvertData; 39}; 40 41} // namespace android 42 43#endif // ZERO_FILTER_H_ 44