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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 HTTP_LIVE_SOURCE_H_
     18 
     19 #define HTTP_LIVE_SOURCE_H_
     20 
     21 #include "NuPlayer.h"
     22 #include "NuPlayerSource.h"
     23 
     24 #include "LiveSession.h"
     25 
     26 namespace android {
     27 
     28 struct LiveSession;
     29 
     30 struct NuPlayer::HTTPLiveSource : public NuPlayer::Source {
     31     HTTPLiveSource(
     32             const sp<AMessage> &notify,
     33             const sp<IMediaHTTPService> &httpService,
     34             const char *url,
     35             const KeyedVector<String8, String8> *headers);
     36 
     37     virtual void prepareAsync();
     38     virtual void start();
     39 
     40     virtual status_t dequeueAccessUnit(bool audio, sp<ABuffer> *accessUnit);
     41     virtual sp<AMessage> getFormat(bool audio);
     42 
     43     virtual status_t feedMoreTSData();
     44     virtual status_t getDuration(int64_t *durationUs);
     45     virtual size_t getTrackCount() const;
     46     virtual sp<AMessage> getTrackInfo(size_t trackIndex) const;
     47     virtual ssize_t getSelectedTrack(media_track_type /* type */) const;
     48     virtual status_t selectTrack(size_t trackIndex, bool select, int64_t timeUs);
     49     virtual status_t seekTo(int64_t seekTimeUs);
     50 
     51 protected:
     52     virtual ~HTTPLiveSource();
     53 
     54     virtual void onMessageReceived(const sp<AMessage> &msg);
     55 
     56 private:
     57     enum Flags {
     58         // Don't log any URLs.
     59         kFlagIncognito = 1,
     60     };
     61 
     62     enum {
     63         kWhatSessionNotify,
     64         kWhatFetchSubtitleData,
     65         kWhatFetchMetaData,
     66     };
     67 
     68     sp<IMediaHTTPService> mHTTPService;
     69     AString mURL;
     70     KeyedVector<String8, String8> mExtraHeaders;
     71     uint32_t mFlags;
     72     status_t mFinalResult;
     73     off64_t mOffset;
     74     sp<ALooper> mLiveLooper;
     75     sp<LiveSession> mLiveSession;
     76     int32_t mFetchSubtitleDataGeneration;
     77     int32_t mFetchMetaDataGeneration;
     78     bool mHasMetadata;
     79     bool mMetadataSelected;
     80 
     81     void onSessionNotify(const sp<AMessage> &msg);
     82     void pollForRawData(
     83             const sp<AMessage> &msg, int32_t currentGeneration,
     84             LiveSession::StreamType fetchType, int32_t pushWhat);
     85 
     86     DISALLOW_EVIL_CONSTRUCTORS(HTTPLiveSource);
     87 };
     88 
     89 }  // namespace android
     90 
     91 #endif  // HTTP_LIVE_SOURCE_H_
     92