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