1/*
2 * Copyright (C) 2011 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 MPEG2_PS_EXTRACTOR_H_
18
19#define MPEG2_PS_EXTRACTOR_H_
20
21#include <media/stagefright/foundation/ABase.h>
22#include <media/stagefright/MediaExtractor.h>
23#include <utils/threads.h>
24#include <utils/KeyedVector.h>
25
26namespace android {
27
28struct ABuffer;
29struct AMessage;
30struct Track;
31struct String8;
32
33struct MPEG2PSExtractor : public MediaExtractor {
34    MPEG2PSExtractor(const sp<DataSource> &source);
35
36    virtual size_t countTracks();
37    virtual sp<MediaSource> getTrack(size_t index);
38    virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags);
39
40    virtual sp<MetaData> getMetaData();
41
42    virtual uint32_t flags() const;
43
44protected:
45    virtual ~MPEG2PSExtractor();
46
47private:
48    struct Track;
49    struct WrappedTrack;
50
51    mutable Mutex mLock;
52    sp<DataSource> mDataSource;
53
54    off64_t mOffset;
55    status_t mFinalResult;
56    sp<ABuffer> mBuffer;
57    KeyedVector<unsigned, sp<Track> > mTracks;
58    bool mScanning;
59
60    bool mProgramStreamMapValid;
61    KeyedVector<unsigned, unsigned> mStreamTypeByESID;
62
63    status_t feedMore();
64
65    status_t dequeueChunk();
66    ssize_t dequeuePack();
67    ssize_t dequeueSystemHeader();
68    ssize_t dequeuePES();
69
70    DISALLOW_EVIL_CONSTRUCTORS(MPEG2PSExtractor);
71};
72
73bool SniffMPEG2PS(
74        const sp<DataSource> &source, String8 *mimeType, float *confidence,
75        sp<AMessage> *);
76
77}  // namespace android
78
79#endif  // MPEG2_PS_EXTRACTOR_H_
80
81