RTSPSource.h revision 144868295f75a650a0b487c60f6983a0790fe39a 
1/*
2 * Copyright (C) 2010 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 RTSP_SOURCE_H_
18
19#define RTSP_SOURCE_H_
20
21#include "NuPlayerSource.h"
22
23#include "ATSParser.h"
24
25namespace android {
26
27struct ALooper;
28struct AReplyToken;
29struct AnotherPacketSource;
30struct MyHandler;
31struct SDPLoader;
32
33struct NuPlayer::RTSPSource : public NuPlayer::Source {
34    RTSPSource(
35            const sp<AMessage> &notify,
36            const sp<IMediaHTTPService> &httpService,
37            const char *url,
38            const KeyedVector<String8, String8> *headers,
39            bool uidValid = false,
40            uid_t uid = 0,
41            bool isSDP = false);
42
43    virtual void prepareAsync();
44    virtual void start();
45    virtual void stop();
46
47    virtual status_t feedMoreTSData();
48
49    virtual status_t dequeueAccessUnit(bool audio, sp<ABuffer> *accessUnit);
50
51    virtual status_t getDuration(int64_t *durationUs);
52    virtual status_t seekTo(int64_t seekTimeUs, bool precise = false) override;
53
54    void onMessageReceived(const sp<AMessage> &msg);
55
56protected:
57    virtual ~RTSPSource();
58
59    virtual sp<MetaData> getFormatMeta(bool audio);
60
61private:
62    enum {
63        kWhatNotify          = 'noti',
64        kWhatDisconnect      = 'disc',
65        kWhatPerformSeek     = 'seek',
66        kWhatPollBuffering   = 'poll',
67        kWhatSignalEOS       = 'eos ',
68    };
69
70    enum State {
71        DISCONNECTED,
72        CONNECTING,
73        CONNECTED,
74        SEEKING,
75    };
76
77    enum Flags {
78        // Don't log any URLs.
79        kFlagIncognito = 1,
80    };
81
82    // Buffer Prepare/Underflow/Overflow/Resume Marks
83    static const int64_t kPrepareMarkUs;
84    static const int64_t kUnderflowMarkUs;
85    static const int64_t kOverflowMarkUs;
86    static const int64_t kStartServerMarkUs;
87
88    struct TrackInfo {
89        sp<AnotherPacketSource> mSource;
90
91        int32_t mTimeScale;
92        uint32_t mRTPTime;
93        int64_t mNormalPlaytimeUs;
94        bool mNPTMappingValid;
95    };
96
97    sp<IMediaHTTPService> mHTTPService;
98    AString mURL;
99    KeyedVector<String8, String8> mExtraHeaders;
100    bool mUIDValid;
101    uid_t mUID;
102    uint32_t mFlags;
103    bool mIsSDP;
104    State mState;
105    status_t mFinalResult;
106    sp<AReplyToken> mDisconnectReplyID;
107    Mutex mBufferingLock;
108    bool mBuffering;
109    bool mInPreparationPhase;
110    bool mEOSPending;
111
112    sp<ALooper> mLooper;
113    sp<MyHandler> mHandler;
114    sp<SDPLoader> mSDPLoader;
115
116    Vector<TrackInfo> mTracks;
117    sp<AnotherPacketSource> mAudioTrack;
118    sp<AnotherPacketSource> mVideoTrack;
119
120    sp<ATSParser> mTSParser;
121
122    int32_t mSeekGeneration;
123
124    int64_t mEOSTimeoutAudio;
125    int64_t mEOSTimeoutVideo;
126
127    sp<AReplyToken> mSeekReplyID;
128
129    sp<AnotherPacketSource> getSource(bool audio);
130
131    void onConnected();
132    void onSDPLoaded(const sp<AMessage> &msg);
133    void onDisconnected(const sp<AMessage> &msg);
134    void finishDisconnectIfPossible();
135
136    void performSeek(int64_t seekTimeUs);
137    void schedulePollBuffering();
138    void checkBuffering(
139            bool *prepared,
140            bool *underflow,
141            bool *overflow,
142            bool *startServer,
143            bool *finished);
144    void onPollBuffering();
145
146    bool haveSufficientDataOnAllTracks();
147
148    void setEOSTimeout(bool audio, int64_t timeout);
149    void setError(status_t err);
150    void startBufferingIfNecessary();
151    bool stopBufferingIfNecessary();
152    void finishSeek(status_t err);
153
154    void postSourceEOSIfNecessary();
155    void signalSourceEOS(status_t result);
156    void onSignalEOS(const sp<AMessage> &msg);
157
158    bool sourceNearEOS(bool audio);
159    bool sourceReachedEOS(bool audio);
160
161    DISALLOW_EVIL_CONSTRUCTORS(RTSPSource);
162};
163
164}  // namespace android
165
166#endif  // RTSP_SOURCE_H_
167