GenericSource.h revision 615fb231ac0c750af41d35dfe13e752630fea00b 
1/*
2 * Copyright (C) 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 GENERIC_SOURCE_H_
18
19#define GENERIC_SOURCE_H_
20
21#include "NuPlayer.h"
22#include "NuPlayerSource.h"
23
24#include "ATSParser.h"
25
26#include <media/mediaplayer.h>
27
28namespace android {
29
30struct AnotherPacketSource;
31struct ARTSPController;
32struct DataSource;
33struct IMediaHTTPService;
34struct MediaSource;
35class MediaBuffer;
36struct NuCachedSource2;
37
38struct NuPlayer::GenericSource : public NuPlayer::Source {
39    GenericSource(const sp<AMessage> &notify, bool uidValid, uid_t uid);
40
41    status_t setDataSource(
42            const sp<IMediaHTTPService> &httpService,
43            const char *url,
44            const KeyedVector<String8, String8> *headers);
45
46    status_t setDataSource(int fd, int64_t offset, int64_t length);
47
48    virtual void prepareAsync();
49
50    virtual void start();
51
52    virtual status_t feedMoreTSData();
53
54    virtual status_t dequeueAccessUnit(bool audio, sp<ABuffer> *accessUnit);
55
56    virtual status_t getDuration(int64_t *durationUs);
57    virtual size_t getTrackCount() const;
58    virtual sp<AMessage> getTrackInfo(size_t trackIndex) const;
59    virtual ssize_t getSelectedTrack(media_track_type type) const;
60    virtual status_t selectTrack(size_t trackIndex, bool select);
61    virtual status_t seekTo(int64_t seekTimeUs);
62
63    virtual status_t setBuffers(bool audio, Vector<MediaBuffer *> &buffers);
64
65protected:
66    virtual ~GenericSource();
67
68    virtual void onMessageReceived(const sp<AMessage> &msg);
69
70    virtual sp<MetaData> getFormatMeta(bool audio);
71
72private:
73    enum {
74        kWhatPrepareAsync,
75        kWhatFetchSubtitleData,
76        kWhatFetchTimedTextData,
77        kWhatSendSubtitleData,
78        kWhatSendTimedTextData,
79        kWhatChangeAVSource,
80    };
81
82    Vector<sp<MediaSource> > mSources;
83
84    struct Track {
85        size_t mIndex;
86        sp<MediaSource> mSource;
87        sp<AnotherPacketSource> mPackets;
88    };
89
90    Track mAudioTrack;
91    Track mVideoTrack;
92    Track mSubtitleTrack;
93    Track mTimedTextTrack;
94
95    int32_t mFetchSubtitleDataGeneration;
96    int32_t mFetchTimedTextDataGeneration;
97    int64_t mDurationUs;
98    bool mAudioIsVorbis;
99    bool mIsWidevine;
100    bool mUIDValid;
101    uid_t mUID;
102    sp<IMediaHTTPService> mHTTPService;
103    AString mUri;
104    KeyedVector<String8, String8> mUriHeaders;
105    int mFd;
106    int64_t mOffset;
107    int64_t mLength;
108
109    sp<DataSource> mDataSource;
110    sp<NuCachedSource2> mCachedSource;
111    String8 mContentType;
112    AString mSniffedMIME;
113    off64_t mMetaDataSize;
114
115    sp<ALooper> mLooper;
116
117    void resetDataSource();
118
119    status_t initFromDataSource();
120
121    status_t prefillCacheIfNecessary();
122
123    void notifyPreparedAndCleanup(status_t err);
124
125    void onPrepareAsync();
126
127    void fetchTextData(
128            uint32_t what, media_track_type type,
129            int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
130
131    void sendTextData(
132            uint32_t what, media_track_type type,
133            int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
134
135    sp<ABuffer> mediaBufferToABuffer(
136            MediaBuffer *mbuf,
137            media_track_type trackType,
138            int64_t *actualTimeUs = NULL);
139
140    void readBuffer(
141            media_track_type trackType,
142            int64_t seekTimeUs = -1ll, int64_t *actualTimeUs = NULL, bool formatChange = false);
143
144    DISALLOW_EVIL_CONSTRUCTORS(GenericSource);
145};
146
147}  // namespace android
148
149#endif  // GENERIC_SOURCE_H_
150