GenericSource.h revision 802768790c131f8237364906fd13981a6bb91193 
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
30class DecryptHandle;
31class DrmManagerClient;
32struct AnotherPacketSource;
33struct ARTSPController;
34struct DataSource;
35struct IMediaHTTPService;
36struct MediaSource;
37class MediaBuffer;
38struct NuCachedSource2;
39struct WVMExtractor;
40
41struct NuPlayer::GenericSource : public NuPlayer::Source {
42    GenericSource(const sp<AMessage> &notify, bool uidValid, uid_t uid);
43
44    status_t setDataSource(
45            const sp<IMediaHTTPService> &httpService,
46            const char *url,
47            const KeyedVector<String8, String8> *headers);
48
49    status_t setDataSource(int fd, int64_t offset, int64_t length);
50
51    virtual void prepareAsync();
52
53    virtual void start();
54    virtual void stop();
55    virtual void pause();
56    virtual void resume();
57
58    virtual status_t feedMoreTSData();
59
60    virtual status_t dequeueAccessUnit(bool audio, sp<ABuffer> *accessUnit);
61
62    virtual status_t getDuration(int64_t *durationUs);
63    virtual size_t getTrackCount() const;
64    virtual sp<AMessage> getTrackInfo(size_t trackIndex) const;
65    virtual ssize_t getSelectedTrack(media_track_type type) const;
66    virtual status_t selectTrack(size_t trackIndex, bool select);
67    virtual status_t seekTo(int64_t seekTimeUs);
68
69    virtual status_t setBuffers(bool audio, Vector<MediaBuffer *> &buffers);
70
71protected:
72    virtual ~GenericSource();
73
74    virtual void onMessageReceived(const sp<AMessage> &msg);
75
76    virtual sp<MetaData> getFormatMeta(bool audio);
77
78private:
79    enum {
80        kWhatPrepareAsync,
81        kWhatFetchSubtitleData,
82        kWhatFetchTimedTextData,
83        kWhatSendSubtitleData,
84        kWhatSendTimedTextData,
85        kWhatChangeAVSource,
86        kWhatPollBuffering,
87    };
88
89    Vector<sp<MediaSource> > mSources;
90
91    struct Track {
92        size_t mIndex;
93        sp<MediaSource> mSource;
94        sp<AnotherPacketSource> mPackets;
95    };
96
97    Track mAudioTrack;
98    int64_t mAudioTimeUs;
99    Track mVideoTrack;
100    int64_t mVideoTimeUs;
101    Track mSubtitleTrack;
102    Track mTimedTextTrack;
103
104    int32_t mFetchSubtitleDataGeneration;
105    int32_t mFetchTimedTextDataGeneration;
106    int64_t mDurationUs;
107    bool mAudioIsVorbis;
108    bool mIsWidevine;
109    bool mUIDValid;
110    uid_t mUID;
111    sp<IMediaHTTPService> mHTTPService;
112    AString mUri;
113    KeyedVector<String8, String8> mUriHeaders;
114    int mFd;
115    int64_t mOffset;
116    int64_t mLength;
117
118    sp<DataSource> mDataSource;
119    sp<NuCachedSource2> mCachedSource;
120    sp<WVMExtractor> mWVMExtractor;
121    DrmManagerClient *mDrmManagerClient;
122    sp<DecryptHandle> mDecryptHandle;
123    bool mStarted;
124    String8 mContentType;
125    AString mSniffedMIME;
126    off64_t mMetaDataSize;
127    int64_t mBitrate;
128    int32_t mPollBufferingGeneration;
129
130    sp<ALooper> mLooper;
131
132    void resetDataSource();
133
134    status_t initFromDataSource();
135    void checkDrmStatus(const sp<DataSource>& dataSource);
136    int64_t getLastReadPosition();
137    void setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position);
138
139    status_t prefillCacheIfNecessary();
140
141    void notifyPreparedAndCleanup(status_t err);
142
143    void onPrepareAsync();
144
145    void fetchTextData(
146            uint32_t what, media_track_type type,
147            int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
148
149    void sendTextData(
150            uint32_t what, media_track_type type,
151            int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
152
153    sp<ABuffer> mediaBufferToABuffer(
154            MediaBuffer *mbuf,
155            media_track_type trackType,
156            int64_t *actualTimeUs = NULL);
157
158    void readBuffer(
159            media_track_type trackType,
160            int64_t seekTimeUs = -1ll, int64_t *actualTimeUs = NULL, bool formatChange = false);
161
162    void schedulePollBuffering();
163    void cancelPollBuffering();
164    void onPollBuffering();
165    void notifyBufferingUpdate(int percentage);
166
167    DISALLOW_EVIL_CONSTRUCTORS(GenericSource);
168};
169
170}  // namespace android
171
172#endif  // GENERIC_SOURCE_H_
173