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      1 /*
      2  * Copyright (C) 2012 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 GENERIC_SOURCE_H_
     18 
     19 #define GENERIC_SOURCE_H_
     20 
     21 #include "NuPlayer.h"
     22 #include "NuPlayerSource.h"
     23 
     24 #include "ATSParser.h"
     25 
     26 #include <media/mediaplayer.h>
     27 
     28 namespace android {
     29 
     30 class DecryptHandle;
     31 class DrmManagerClient;
     32 struct AnotherPacketSource;
     33 struct ARTSPController;
     34 class DataSource;
     35 class IDataSource;
     36 struct IMediaHTTPService;
     37 struct MediaSource;
     38 class MediaBuffer;
     39 struct NuCachedSource2;
     40 class WVMExtractor;
     41 
     42 struct NuPlayer::GenericSource : public NuPlayer::Source {
     43     GenericSource(const sp<AMessage> &notify, bool uidValid, uid_t uid);
     44 
     45     status_t setDataSource(
     46             const sp<IMediaHTTPService> &httpService,
     47             const char *url,
     48             const KeyedVector<String8, String8> *headers);
     49 
     50     status_t setDataSource(int fd, int64_t offset, int64_t length);
     51 
     52     status_t setDataSource(const sp<DataSource>& dataSource);
     53 
     54     virtual void prepareAsync();
     55 
     56     virtual void start();
     57     virtual void stop();
     58     virtual void pause();
     59     virtual void resume();
     60 
     61     virtual void disconnect();
     62 
     63     virtual status_t feedMoreTSData();
     64 
     65     virtual sp<MetaData> getFileFormatMeta() const;
     66 
     67     virtual status_t dequeueAccessUnit(bool audio, sp<ABuffer> *accessUnit);
     68 
     69     virtual status_t getDuration(int64_t *durationUs);
     70     virtual size_t getTrackCount() const;
     71     virtual sp<AMessage> getTrackInfo(size_t trackIndex) const;
     72     virtual ssize_t getSelectedTrack(media_track_type type) const;
     73     virtual status_t selectTrack(size_t trackIndex, bool select, int64_t timeUs);
     74     virtual status_t seekTo(int64_t seekTimeUs);
     75 
     76     virtual status_t setBuffers(bool audio, Vector<MediaBuffer *> &buffers);
     77 
     78     virtual bool isStreaming() const;
     79 
     80 protected:
     81     virtual ~GenericSource();
     82 
     83     virtual void onMessageReceived(const sp<AMessage> &msg);
     84 
     85     virtual sp<MetaData> getFormatMeta(bool audio);
     86 
     87 private:
     88     enum {
     89         kWhatPrepareAsync,
     90         kWhatFetchSubtitleData,
     91         kWhatFetchTimedTextData,
     92         kWhatSendSubtitleData,
     93         kWhatSendTimedTextData,
     94         kWhatChangeAVSource,
     95         kWhatPollBuffering,
     96         kWhatGetFormat,
     97         kWhatGetSelectedTrack,
     98         kWhatSelectTrack,
     99         kWhatSeek,
    100         kWhatReadBuffer,
    101         kWhatStopWidevine,
    102         kWhatStart,
    103         kWhatResume,
    104         kWhatSecureDecodersInstantiated,
    105     };
    106 
    107     struct Track {
    108         size_t mIndex;
    109         sp<MediaSource> mSource;
    110         sp<AnotherPacketSource> mPackets;
    111     };
    112 
    113     Vector<sp<MediaSource> > mSources;
    114     Track mAudioTrack;
    115     int64_t mAudioTimeUs;
    116     int64_t mAudioLastDequeueTimeUs;
    117     Track mVideoTrack;
    118     int64_t mVideoTimeUs;
    119     int64_t mVideoLastDequeueTimeUs;
    120     Track mSubtitleTrack;
    121     Track mTimedTextTrack;
    122 
    123     int32_t mFetchSubtitleDataGeneration;
    124     int32_t mFetchTimedTextDataGeneration;
    125     int64_t mDurationUs;
    126     bool mAudioIsVorbis;
    127     bool mIsWidevine;
    128     bool mIsSecure;
    129     bool mIsStreaming;
    130     bool mUIDValid;
    131     uid_t mUID;
    132     sp<IMediaHTTPService> mHTTPService;
    133     AString mUri;
    134     KeyedVector<String8, String8> mUriHeaders;
    135     int mFd;
    136     int64_t mOffset;
    137     int64_t mLength;
    138 
    139     sp<DataSource> mDataSource;
    140     sp<NuCachedSource2> mCachedSource;
    141     sp<DataSource> mHttpSource;
    142     sp<WVMExtractor> mWVMExtractor;
    143     sp<MetaData> mFileMeta;
    144     DrmManagerClient *mDrmManagerClient;
    145     sp<DecryptHandle> mDecryptHandle;
    146     bool mStarted;
    147     bool mStopRead;
    148     int64_t mBitrate;
    149     int32_t mPollBufferingGeneration;
    150     uint32_t mPendingReadBufferTypes;
    151     bool mBuffering;
    152     bool mPrepareBuffering;
    153     int32_t mPrevBufferPercentage;
    154 
    155     mutable Mutex mReadBufferLock;
    156 
    157     sp<ALooper> mLooper;
    158 
    159     void resetDataSource();
    160 
    161     status_t initFromDataSource();
    162     void checkDrmStatus(const sp<DataSource>& dataSource);
    163     int64_t getLastReadPosition();
    164     void setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position);
    165 
    166     void notifyPreparedAndCleanup(status_t err);
    167     void onSecureDecodersInstantiated(status_t err);
    168     void finishPrepareAsync();
    169     status_t startSources();
    170 
    171     void onGetFormatMeta(sp<AMessage> msg) const;
    172     sp<MetaData> doGetFormatMeta(bool audio) const;
    173 
    174     void onGetSelectedTrack(sp<AMessage> msg) const;
    175     ssize_t doGetSelectedTrack(media_track_type type) const;
    176 
    177     void onSelectTrack(sp<AMessage> msg);
    178     status_t doSelectTrack(size_t trackIndex, bool select, int64_t timeUs);
    179 
    180     void onSeek(sp<AMessage> msg);
    181     status_t doSeek(int64_t seekTimeUs);
    182 
    183     void onPrepareAsync();
    184 
    185     void fetchTextData(
    186             uint32_t what, media_track_type type,
    187             int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
    188 
    189     void sendTextData(
    190             uint32_t what, media_track_type type,
    191             int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
    192 
    193     sp<ABuffer> mediaBufferToABuffer(
    194             MediaBuffer *mbuf,
    195             media_track_type trackType,
    196             int64_t seekTimeUs,
    197             int64_t *actualTimeUs = NULL);
    198 
    199     void postReadBuffer(media_track_type trackType);
    200     void onReadBuffer(sp<AMessage> msg);
    201     void readBuffer(
    202             media_track_type trackType,
    203             int64_t seekTimeUs = -1ll, int64_t *actualTimeUs = NULL, bool formatChange = false);
    204 
    205     void queueDiscontinuityIfNeeded(
    206             bool seeking, bool formatChange, media_track_type trackType, Track *track);
    207 
    208     void schedulePollBuffering();
    209     void cancelPollBuffering();
    210     void restartPollBuffering();
    211     void onPollBuffering();
    212     void notifyBufferingUpdate(int32_t percentage);
    213     void startBufferingIfNecessary();
    214     void stopBufferingIfNecessary();
    215     void sendCacheStats();
    216     void ensureCacheIsFetching();
    217 
    218     DISALLOW_EVIL_CONSTRUCTORS(GenericSource);
    219 };
    220 
    221 }  // namespace android
    222 
    223 #endif  // GENERIC_SOURCE_H_
    224