GenericSource.h revision 360d6d0924f99b82ebacb5cfb6f7bca95e11b4ee 
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    };
97
98    Vector<sp<MediaSource> > mSources;
99
100    struct Track {
101        size_t mIndex;
102        sp<MediaSource> mSource;
103        sp<AnotherPacketSource> mPackets;
104    };
105
106    Track mAudioTrack;
107    int64_t mAudioTimeUs;
108    Track mVideoTrack;
109    int64_t mVideoTimeUs;
110    Track mSubtitleTrack;
111    Track mTimedTextTrack;
112
113    int32_t mFetchSubtitleDataGeneration;
114    int32_t mFetchTimedTextDataGeneration;
115    int64_t mDurationUs;
116    bool mAudioIsVorbis;
117    bool mIsWidevine;
118    bool mUIDValid;
119    uid_t mUID;
120    sp<IMediaHTTPService> mHTTPService;
121    AString mUri;
122    KeyedVector<String8, String8> mUriHeaders;
123    int mFd;
124    int64_t mOffset;
125    int64_t mLength;
126
127    sp<DataSource> mDataSource;
128    sp<NuCachedSource2> mCachedSource;
129    sp<DataSource> mHttpSource;
130    sp<WVMExtractor> mWVMExtractor;
131    sp<MetaData> mFileMeta;
132    DrmManagerClient *mDrmManagerClient;
133    sp<DecryptHandle> mDecryptHandle;
134    bool mStarted;
135    String8 mContentType;
136    AString mSniffedMIME;
137    off64_t mMetaDataSize;
138    int64_t mBitrate;
139    int32_t mPollBufferingGeneration;
140    uint32_t mPendingReadBufferTypes;
141    mutable Mutex mReadBufferLock;
142
143    sp<ALooper> mLooper;
144
145    void resetDataSource();
146
147    status_t initFromDataSource();
148    void checkDrmStatus(const sp<DataSource>& dataSource);
149    int64_t getLastReadPosition();
150    void setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position);
151
152    status_t prefillCacheIfNecessary();
153
154    void notifyPreparedAndCleanup(status_t err);
155
156    void onGetFormatMeta(sp<AMessage> msg) const;
157    sp<MetaData> doGetFormatMeta(bool audio) const;
158
159    void onGetSelectedTrack(sp<AMessage> msg) const;
160    ssize_t doGetSelectedTrack(media_track_type type) const;
161
162    void onSelectTrack(sp<AMessage> msg);
163    status_t doSelectTrack(size_t trackIndex, bool select);
164
165    void onSeek(sp<AMessage> msg);
166    status_t doSeek(int64_t seekTimeUs);
167
168    void onPrepareAsync();
169
170    void fetchTextData(
171            uint32_t what, media_track_type type,
172            int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
173
174    void sendTextData(
175            uint32_t what, media_track_type type,
176            int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
177
178    sp<ABuffer> mediaBufferToABuffer(
179            MediaBuffer *mbuf,
180            media_track_type trackType,
181            int64_t *actualTimeUs = NULL);
182
183    void postReadBuffer(media_track_type trackType);
184    void onReadBuffer(sp<AMessage> msg);
185    void readBuffer(
186            media_track_type trackType,
187            int64_t seekTimeUs = -1ll, int64_t *actualTimeUs = NULL, bool formatChange = false);
188
189    void schedulePollBuffering();
190    void cancelPollBuffering();
191    void onPollBuffering();
192    void notifyBufferingUpdate(int percentage);
193
194    DISALLOW_EVIL_CONSTRUCTORS(GenericSource);
195};
196
197}  // namespace android
198
199#endif  // GENERIC_SOURCE_H_
200