MatroskaExtractor.h revision 093437c388e5dff6903a3d43f2ca9f8a1ba4744a 
1/*
2 * Copyright (C) 2010 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 MATROSKA_EXTRACTOR_H_
18
19#define MATROSKA_EXTRACTOR_H_
20
21#include <media/stagefright/MediaExtractor.h>
22#include <utils/Vector.h>
23
24namespace mkvparser {
25struct Segment;
26};
27
28namespace android {
29
30class String8;
31
32struct DataSourceReader;
33struct MatroskaSource;
34
35struct MatroskaExtractor : public MediaExtractor {
36    MatroskaExtractor(const sp<DataSource> &source);
37
38    virtual size_t countTracks();
39
40    virtual sp<MediaSource> getTrack(size_t index);
41
42    virtual sp<MetaData> getTrackMetaData(
43            size_t index, uint32_t flags);
44
45    virtual sp<MetaData> getMetaData();
46
47protected:
48    virtual ~MatroskaExtractor();
49
50private:
51    friend struct MatroskaSource;
52
53    struct TrackInfo {
54        unsigned long mTrackNum;
55        sp<MetaData> mMeta;
56    };
57    Vector<TrackInfo> mTracks;
58
59    sp<DataSource> mDataSource;
60    DataSourceReader *mReader;
61    mkvparser::Segment *mSegment;
62
63    void addTracks();
64
65    MatroskaExtractor(const MatroskaExtractor &);
66    MatroskaExtractor &operator=(const MatroskaExtractor &);
67};
68
69bool SniffMatroska(
70        const sp<DataSource> &source, String8 *mimeType, float *confidence);
71
72}  // namespace android
73
74#endif  // MATROSKA_EXTRACTOR_H_
75