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_EXTRACTOR_H_
18
19#define AMR_EXTRACTOR_H_
20
21#include <utils/Errors.h>
22#include <media/MediaExtractor.h>
23#include <media/stagefright/MetaDataBase.h>
24
25namespace android {
26
27struct AMessage;
28class String8;
29#define OFFSET_TABLE_LEN    300
30
31class AMRExtractor : public MediaExtractor {
32public:
33    explicit AMRExtractor(DataSourceBase *source);
34
35    virtual size_t countTracks();
36    virtual MediaTrack *getTrack(size_t index);
37    virtual status_t getTrackMetaData(MetaDataBase& meta, size_t index, uint32_t flags);
38
39    virtual status_t getMetaData(MetaDataBase& meta);
40    virtual const char * name() { return "AMRExtractor"; }
41
42protected:
43    virtual ~AMRExtractor();
44
45private:
46    DataSourceBase *mDataSource;
47    MetaDataBase mMeta;
48    status_t mInitCheck;
49    bool mIsWide;
50
51    off64_t mOffsetTable[OFFSET_TABLE_LEN]; //5 min
52    size_t mOffsetTableLength;
53
54    AMRExtractor(const AMRExtractor &);
55    AMRExtractor &operator=(const AMRExtractor &);
56};
57
58}  // namespace android
59
60#endif  // AMR_EXTRACTOR_H_
61