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      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 
     25 namespace android {
     26 
     27 struct ALooper;
     28 struct AReplyToken;
     29 struct AnotherPacketSource;
     30 struct MyHandler;
     31 struct SDPLoader;
     32 
     33 struct 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 status_t getDefaultBufferingSettings(
     44             BufferingSettings* buffering /* nonnull */) override;
     45     virtual status_t setBufferingSettings(const BufferingSettings& buffering) override;
     46 
     47     virtual void prepareAsync();
     48     virtual void start();
     49     virtual void stop();
     50 
     51     virtual status_t feedMoreTSData();
     52 
     53     virtual status_t dequeueAccessUnit(bool audio, sp<ABuffer> *accessUnit);
     54 
     55     virtual status_t getDuration(int64_t *durationUs);
     56     virtual status_t seekTo(
     57             int64_t seekTimeUs,
     58             MediaPlayerSeekMode mode = MediaPlayerSeekMode::SEEK_PREVIOUS_SYNC) override;
     59 
     60     void onMessageReceived(const sp<AMessage> &msg);
     61 
     62 protected:
     63     virtual ~RTSPSource();
     64 
     65     virtual sp<MetaData> getFormatMeta(bool audio);
     66 
     67 private:
     68     enum {
     69         kWhatNotify          = 'noti',
     70         kWhatDisconnect      = 'disc',
     71         kWhatPerformSeek     = 'seek',
     72         kWhatPollBuffering   = 'poll',
     73         kWhatSignalEOS       = 'eos ',
     74         kWhatSetBufferingSettings = 'sBuS',
     75     };
     76 
     77     enum State {
     78         DISCONNECTED,
     79         CONNECTING,
     80         CONNECTED,
     81         SEEKING,
     82     };
     83 
     84     enum Flags {
     85         // Don't log any URLs.
     86         kFlagIncognito = 1,
     87     };
     88 
     89     struct TrackInfo {
     90         sp<AnotherPacketSource> mSource;
     91 
     92         int32_t mTimeScale;
     93         uint32_t mRTPTime;
     94         int64_t mNormalPlaytimeUs;
     95         bool mNPTMappingValid;
     96     };
     97 
     98     sp<IMediaHTTPService> mHTTPService;
     99     AString mURL;
    100     KeyedVector<String8, String8> mExtraHeaders;
    101     bool mUIDValid;
    102     uid_t mUID;
    103     uint32_t mFlags;
    104     bool mIsSDP;
    105     State mState;
    106     status_t mFinalResult;
    107     sp<AReplyToken> mDisconnectReplyID;
    108     Mutex mBufferingLock;
    109     bool mBuffering;
    110     bool mInPreparationPhase;
    111     bool mEOSPending;
    112     BufferingSettings mBufferingSettings;
    113 
    114     sp<ALooper> mLooper;
    115     sp<MyHandler> mHandler;
    116     sp<SDPLoader> mSDPLoader;
    117 
    118     Vector<TrackInfo> mTracks;
    119     sp<AnotherPacketSource> mAudioTrack;
    120     sp<AnotherPacketSource> mVideoTrack;
    121 
    122     sp<ATSParser> mTSParser;
    123 
    124     int32_t mSeekGeneration;
    125 
    126     int64_t mEOSTimeoutAudio;
    127     int64_t mEOSTimeoutVideo;
    128 
    129     sp<AReplyToken> mSeekReplyID;
    130 
    131     sp<AnotherPacketSource> getSource(bool audio);
    132 
    133     void onConnected();
    134     void onSDPLoaded(const sp<AMessage> &msg);
    135     void onDisconnected(const sp<AMessage> &msg);
    136     void finishDisconnectIfPossible();
    137 
    138     void performSeek(int64_t seekTimeUs);
    139     void schedulePollBuffering();
    140     void checkBuffering(
    141             bool *prepared,
    142             bool *underflow,
    143             bool *overflow,
    144             bool *startServer,
    145             bool *finished);
    146     void onPollBuffering();
    147 
    148     bool haveSufficientDataOnAllTracks();
    149 
    150     void setEOSTimeout(bool audio, int64_t timeout);
    151     void setError(status_t err);
    152     void startBufferingIfNecessary();
    153     bool stopBufferingIfNecessary();
    154     void finishSeek(status_t err);
    155 
    156     void postSourceEOSIfNecessary();
    157     void signalSourceEOS(status_t result);
    158     void onSignalEOS(const sp<AMessage> &msg);
    159 
    160     bool sourceNearEOS(bool audio);
    161     bool sourceReachedEOS(bool audio);
    162 
    163     DISALLOW_EVIL_CONSTRUCTORS(RTSPSource);
    164 };
    165 
    166 }  // namespace android
    167 
    168 #endif  // RTSP_SOURCE_H_
    169