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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 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);
     53 
     54     void onMessageReceived(const sp<AMessage> &msg);
     55 
     56 protected:
     57     virtual ~RTSPSource();
     58 
     59     virtual sp<MetaData> getFormatMeta(bool audio);
     60 
     61 private:
     62     enum {
     63         kWhatNotify          = 'noti',
     64         kWhatDisconnect      = 'disc',
     65         kWhatPerformSeek     = 'seek',
     66         kWhatPollBuffering   = 'poll',
     67     };
     68 
     69     enum State {
     70         DISCONNECTED,
     71         CONNECTING,
     72         CONNECTED,
     73         SEEKING,
     74     };
     75 
     76     enum Flags {
     77         // Don't log any URLs.
     78         kFlagIncognito = 1,
     79     };
     80 
     81     // Buffer Prepare/Underflow/Overflow/Resume Marks
     82     static const int64_t kPrepareMarkUs;
     83     static const int64_t kUnderflowMarkUs;
     84     static const int64_t kOverflowMarkUs;
     85     static const int64_t kStartServerMarkUs;
     86 
     87     struct TrackInfo {
     88         sp<AnotherPacketSource> mSource;
     89 
     90         int32_t mTimeScale;
     91         uint32_t mRTPTime;
     92         int64_t mNormalPlaytimeUs;
     93         bool mNPTMappingValid;
     94     };
     95 
     96     sp<IMediaHTTPService> mHTTPService;
     97     AString mURL;
     98     KeyedVector<String8, String8> mExtraHeaders;
     99     bool mUIDValid;
    100     uid_t mUID;
    101     uint32_t mFlags;
    102     bool mIsSDP;
    103     State mState;
    104     status_t mFinalResult;
    105     sp<AReplyToken> mDisconnectReplyID;
    106     Mutex mBufferingLock;
    107     bool mBuffering;
    108     bool mInPreparationPhase;
    109 
    110     sp<ALooper> mLooper;
    111     sp<MyHandler> mHandler;
    112     sp<SDPLoader> mSDPLoader;
    113 
    114     Vector<TrackInfo> mTracks;
    115     sp<AnotherPacketSource> mAudioTrack;
    116     sp<AnotherPacketSource> mVideoTrack;
    117 
    118     sp<ATSParser> mTSParser;
    119 
    120     int32_t mSeekGeneration;
    121 
    122     int64_t mEOSTimeoutAudio;
    123     int64_t mEOSTimeoutVideo;
    124 
    125     sp<AReplyToken> mSeekReplyID;
    126 
    127     sp<AnotherPacketSource> getSource(bool audio);
    128 
    129     void onConnected();
    130     void onSDPLoaded(const sp<AMessage> &msg);
    131     void onDisconnected(const sp<AMessage> &msg);
    132     void finishDisconnectIfPossible();
    133 
    134     void performSeek(int64_t seekTimeUs);
    135     void schedulePollBuffering();
    136     void checkBuffering(bool *prepared, bool *underflow, bool *overflow, bool *startServer);
    137     void onPollBuffering();
    138 
    139     bool haveSufficientDataOnAllTracks();
    140 
    141     void setEOSTimeout(bool audio, int64_t timeout);
    142     void setError(status_t err);
    143     void startBufferingIfNecessary();
    144     bool stopBufferingIfNecessary();
    145     void finishSeek(status_t err);
    146 
    147     DISALLOW_EVIL_CONSTRUCTORS(RTSPSource);
    148 };
    149 
    150 }  // namespace android
    151 
    152 #endif  // RTSP_SOURCE_H_
    153