| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef LIVE_SESSION_H_ |
| |
| #define LIVE_SESSION_H_ |
| |
| #include <media/stagefright/foundation/AHandler.h> |
| |
| namespace android { |
| |
| struct ABuffer; |
| struct DataSource; |
| struct LiveDataSource; |
| struct M3UParser; |
| struct NuHTTPDataSource; |
| |
| struct LiveSession : public AHandler { |
| LiveSession(); |
| |
| sp<DataSource> getDataSource(); |
| |
| void connect(const char *url); |
| void disconnect(); |
| |
| // Blocks until seek is complete. |
| void seekTo(int64_t timeUs); |
| |
| status_t getDuration(int64_t *durationUs); |
| bool isSeekable(); |
| |
| protected: |
| virtual ~LiveSession(); |
| |
| virtual void onMessageReceived(const sp<AMessage> &msg); |
| |
| private: |
| enum { |
| kMaxNumQueuedFragments = 3, |
| kMaxNumRetries = 5, |
| }; |
| |
| static const int64_t kMaxPlaylistAgeUs; |
| |
| enum { |
| kWhatConnect = 'conn', |
| kWhatDisconnect = 'disc', |
| kWhatMonitorQueue = 'moni', |
| kWhatSeek = 'seek', |
| }; |
| |
| struct BandwidthItem { |
| AString mURI; |
| unsigned long mBandwidth; |
| }; |
| |
| sp<LiveDataSource> mDataSource; |
| |
| sp<NuHTTPDataSource> mHTTPDataSource; |
| |
| AString mMasterURL; |
| Vector<BandwidthItem> mBandwidthItems; |
| |
| KeyedVector<AString, sp<ABuffer> > mAESKeyForURI; |
| |
| ssize_t mPrevBandwidthIndex; |
| int64_t mLastPlaylistFetchTimeUs; |
| sp<M3UParser> mPlaylist; |
| int32_t mSeqNumber; |
| int64_t mSeekTimeUs; |
| int32_t mNumRetries; |
| |
| Mutex mLock; |
| Condition mCondition; |
| int64_t mDurationUs; |
| bool mSeekDone; |
| bool mDisconnectPending; |
| |
| int32_t mMonitorQueueGeneration; |
| |
| void onConnect(const sp<AMessage> &msg); |
| void onDisconnect(); |
| void onDownloadNext(); |
| void onMonitorQueue(); |
| void onSeek(const sp<AMessage> &msg); |
| |
| status_t fetchFile(const char *url, sp<ABuffer> *out); |
| sp<M3UParser> fetchPlaylist(const char *url); |
| size_t getBandwidthIndex(); |
| |
| status_t decryptBuffer( |
| size_t playlistIndex, const sp<ABuffer> &buffer); |
| |
| void postMonitorQueue(int64_t delayUs = 0); |
| |
| static int SortByBandwidth(const BandwidthItem *, const BandwidthItem *); |
| |
| DISALLOW_EVIL_CONSTRUCTORS(LiveSession); |
| }; |
| |
| } // namespace android |
| |
| #endif // LIVE_SESSION_H_ |