1/*
2 * Copyright 2012, 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 NU_MEDIA_EXTRACTOR_H_
18#define NU_MEDIA_EXTRACTOR_H_
19
20#include <media/stagefright/foundation/ABase.h>
21#include <media/stagefright/MediaSource.h>
22#include <utils/Errors.h>
23#include <utils/KeyedVector.h>
24#include <utils/RefBase.h>
25#include <utils/String8.h>
26#include <utils/threads.h>
27#include <utils/Vector.h>
28
29namespace android {
30
31struct ABuffer;
32struct AMessage;
33struct DataSource;
34struct IMediaHTTPService;
35struct MediaBuffer;
36struct MediaExtractor;
37struct MediaSource;
38struct MetaData;
39
40struct NuMediaExtractor : public RefBase {
41    enum SampleFlags {
42        SAMPLE_FLAG_SYNC        = 1,
43        SAMPLE_FLAG_ENCRYPTED   = 2,
44    };
45
46    NuMediaExtractor();
47
48    status_t setDataSource(
49            const sp<IMediaHTTPService> &httpService,
50            const char *path,
51            const KeyedVector<String8, String8> *headers = NULL);
52
53    status_t setDataSource(int fd, off64_t offset, off64_t size);
54
55    status_t setDataSource(const sp<DataSource> &datasource);
56
57    size_t countTracks() const;
58    status_t getTrackFormat(size_t index, sp<AMessage> *format) const;
59
60    status_t getFileFormat(sp<AMessage> *format) const;
61
62    status_t selectTrack(size_t index);
63    status_t unselectTrack(size_t index);
64
65    status_t seekTo(
66            int64_t timeUs,
67            MediaSource::ReadOptions::SeekMode mode =
68                MediaSource::ReadOptions::SEEK_CLOSEST_SYNC);
69
70    status_t advance();
71    status_t readSampleData(const sp<ABuffer> &buffer);
72    status_t getSampleTrackIndex(size_t *trackIndex);
73    status_t getSampleTime(int64_t *sampleTimeUs);
74    status_t getSampleMeta(sp<MetaData> *sampleMeta);
75
76    bool getCachedDuration(int64_t *durationUs, bool *eos) const;
77
78protected:
79    virtual ~NuMediaExtractor();
80
81private:
82    enum TrackFlags {
83        kIsVorbis       = 1,
84    };
85
86    struct TrackInfo {
87        sp<MediaSource> mSource;
88        size_t mTrackIndex;
89        status_t mFinalResult;
90        MediaBuffer *mSample;
91        int64_t mSampleTimeUs;
92
93        uint32_t mTrackFlags;  // bitmask of "TrackFlags"
94    };
95
96    mutable Mutex mLock;
97
98    sp<DataSource> mDataSource;
99
100    sp<MediaExtractor> mImpl;
101    bool mIsWidevineExtractor;
102
103    Vector<TrackInfo> mSelectedTracks;
104    int64_t mTotalBitrate;  // in bits/sec
105    int64_t mDurationUs;
106
107    ssize_t fetchTrackSamples(
108            int64_t seekTimeUs = -1ll,
109            MediaSource::ReadOptions::SeekMode mode =
110                MediaSource::ReadOptions::SEEK_CLOSEST_SYNC);
111
112    void releaseTrackSamples();
113
114    bool getTotalBitrate(int64_t *bitRate) const;
115    void updateDurationAndBitrate();
116
117    DISALLOW_EVIL_CONSTRUCTORS(NuMediaExtractor);
118};
119
120}  // namespace android
121
122#endif  // NU_MEDIA_EXTRACTOR_H_
123
124