GenericSource.h revision 2abde2c118a94f843a7450818c925d3f0b673cd3 
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 void disconnect();
59
60    virtual status_t feedMoreTSData();
61
62    virtual sp<MetaData> getFileFormatMeta() const;
63
64    virtual status_t dequeueAccessUnit(bool audio, sp<ABuffer> *accessUnit);
65
66    virtual status_t getDuration(int64_t *durationUs);
67    virtual size_t getTrackCount() const;
68    virtual sp<AMessage> getTrackInfo(size_t trackIndex) const;
69    virtual ssize_t getSelectedTrack(media_track_type type) const;
70    virtual status_t selectTrack(size_t trackIndex, bool select);
71    virtual status_t seekTo(int64_t seekTimeUs);
72
73    virtual status_t setBuffers(bool audio, Vector<MediaBuffer *> &buffers);
74
75protected:
76    virtual ~GenericSource();
77
78    virtual void onMessageReceived(const sp<AMessage> &msg);
79
80    virtual sp<MetaData> getFormatMeta(bool audio);
81
82private:
83    enum {
84        kWhatPrepareAsync,
85        kWhatFetchSubtitleData,
86        kWhatFetchTimedTextData,
87        kWhatSendSubtitleData,
88        kWhatSendTimedTextData,
89        kWhatChangeAVSource,
90        kWhatPollBuffering,
91        kWhatGetFormat,
92        kWhatGetSelectedTrack,
93        kWhatSelectTrack,
94        kWhatSeek,
95        kWhatReadBuffer,
96        kWhatStopWidevine,
97    };
98
99    Vector<sp<MediaSource> > mSources;
100
101    struct Track {
102        size_t mIndex;
103        sp<MediaSource> mSource;
104        sp<AnotherPacketSource> mPackets;
105    };
106
107    Track mAudioTrack;
108    int64_t mAudioTimeUs;
109    Track mVideoTrack;
110    int64_t mVideoTimeUs;
111    Track mSubtitleTrack;
112    Track mTimedTextTrack;
113
114    int32_t mFetchSubtitleDataGeneration;
115    int32_t mFetchTimedTextDataGeneration;
116    int64_t mDurationUs;
117    bool mAudioIsVorbis;
118    bool mIsWidevine;
119    bool mUIDValid;
120    uid_t mUID;
121    sp<IMediaHTTPService> mHTTPService;
122    AString mUri;
123    KeyedVector<String8, String8> mUriHeaders;
124    int mFd;
125    int64_t mOffset;
126    int64_t mLength;
127
128    sp<DataSource> mDataSource;
129    sp<NuCachedSource2> mCachedSource;
130    sp<WVMExtractor> mWVMExtractor;
131    sp<MetaData> mFileMeta;
132    DrmManagerClient *mDrmManagerClient;
133    sp<DecryptHandle> mDecryptHandle;
134    bool mStarted;
135    bool mStopRead;
136    String8 mContentType;
137    AString mSniffedMIME;
138    off64_t mMetaDataSize;
139    int64_t mBitrate;
140    int32_t mPollBufferingGeneration;
141    uint32_t mPendingReadBufferTypes;
142    mutable Mutex mReadBufferLock;
143
144    sp<ALooper> mLooper;
145
146    void resetDataSource();
147
148    status_t initFromDataSource();
149    void checkDrmStatus(const sp<DataSource>& dataSource);
150    int64_t getLastReadPosition();
151    void setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position);
152
153    status_t prefillCacheIfNecessary();
154
155    void notifyPreparedAndCleanup(status_t err);
156
157    void onGetFormatMeta(sp<AMessage> msg) const;
158    sp<MetaData> doGetFormatMeta(bool audio) const;
159
160    void onGetSelectedTrack(sp<AMessage> msg) const;
161    ssize_t doGetSelectedTrack(media_track_type type) const;
162
163    void onSelectTrack(sp<AMessage> msg);
164    status_t doSelectTrack(size_t trackIndex, bool select);
165
166    void onSeek(sp<AMessage> msg);
167    status_t doSeek(int64_t seekTimeUs);
168
169    void onPrepareAsync();
170
171    void fetchTextData(
172            uint32_t what, media_track_type type,
173            int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
174
175    void sendTextData(
176            uint32_t what, media_track_type type,
177            int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
178
179    sp<ABuffer> mediaBufferToABuffer(
180            MediaBuffer *mbuf,
181            media_track_type trackType,
182            int64_t *actualTimeUs = NULL);
183
184    void postReadBuffer(media_track_type trackType);
185    void onReadBuffer(sp<AMessage> msg);
186    void readBuffer(
187            media_track_type trackType,
188            int64_t seekTimeUs = -1ll, int64_t *actualTimeUs = NULL, bool formatChange = false);
189
190    void schedulePollBuffering();
191    void cancelPollBuffering();
192    void onPollBuffering();
193    void notifyBufferingUpdate(int percentage);
194
195    DISALLOW_EVIL_CONSTRUCTORS(GenericSource);
196};
197
198}  // namespace android
199
200#endif  // GENERIC_SOURCE_H_
201