1/*
2 * Copyright (C) 2009 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 AMR_NB_DECODER_H_
18
19#define AMR_NB_DECODER_H_
20
21#include <media/stagefright/MediaSource.h>
22
23namespace android {
24
25struct MediaBufferGroup;
26
27struct AMRNBDecoder : public MediaSource {
28    AMRNBDecoder(const sp<MediaSource> &source);
29
30    virtual status_t start(MetaData *params);
31    virtual status_t stop();
32
33    virtual sp<MetaData> getFormat();
34
35    virtual status_t read(
36            MediaBuffer **buffer, const ReadOptions *options);
37
38protected:
39    virtual ~AMRNBDecoder();
40
41private:
42    sp<MediaSource> mSource;
43    bool mStarted;
44
45    MediaBufferGroup *mBufferGroup;
46
47    void *mState;
48    int64_t mAnchorTimeUs;
49    int64_t mNumSamplesOutput;
50
51    MediaBuffer *mInputBuffer;
52
53    AMRNBDecoder(const AMRNBDecoder &);
54    AMRNBDecoder &operator=(const AMRNBDecoder &);
55};
56
57}  // namespace android
58
59#endif  // AMR_NB_DECODER_H_
60