1 /* 2 ** 3 ** Copyright 2008, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 #ifndef ANDROID_MEDIAPLAYERSERVICE_H 19 #define ANDROID_MEDIAPLAYERSERVICE_H 20 21 #include <arpa/inet.h> 22 23 #include <utils/threads.h> 24 #include <utils/Errors.h> 25 #include <utils/KeyedVector.h> 26 #include <utils/String8.h> 27 #include <utils/Vector.h> 28 29 #include <media/MediaPlayerInterface.h> 30 #include <media/Metadata.h> 31 #include <media/stagefright/foundation/ABase.h> 32 33 #include <system/audio.h> 34 35 namespace android { 36 37 struct AudioPlaybackRate; 38 class AudioTrack; 39 struct AVSyncSettings; 40 class IDataSource; 41 class IMediaRecorder; 42 class IMediaMetadataRetriever; 43 class IOMX; 44 class IRemoteDisplay; 45 class IRemoteDisplayClient; 46 class MediaRecorderClient; 47 48 #define CALLBACK_ANTAGONIZER 0 49 #if CALLBACK_ANTAGONIZER 50 class Antagonizer { 51 public: 52 Antagonizer(notify_callback_f cb, void* client); start()53 void start() { mActive = true; } stop()54 void stop() { mActive = false; } 55 void kill(); 56 private: 57 static const int interval; 58 Antagonizer(); 59 static int callbackThread(void* cookie); 60 Mutex mLock; 61 Condition mCondition; 62 bool mExit; 63 bool mActive; 64 void* mClient; 65 notify_callback_f mCb; 66 }; 67 #endif 68 69 class MediaPlayerService : public BnMediaPlayerService 70 { 71 class Client; 72 73 class AudioOutput : public MediaPlayerBase::AudioSink 74 { 75 class CallbackData; 76 77 public: 78 AudioOutput(audio_session_t sessionId, int uid, int pid, 79 const audio_attributes_t * attr); 80 virtual ~AudioOutput(); 81 ready()82 virtual bool ready() const { return mTrack != 0; } 83 virtual ssize_t bufferSize() const; 84 virtual ssize_t frameCount() const; 85 virtual ssize_t channelCount() const; 86 virtual ssize_t frameSize() const; 87 virtual uint32_t latency() const; 88 virtual float msecsPerFrame() const; 89 virtual status_t getPosition(uint32_t *position) const; 90 virtual status_t getTimestamp(AudioTimestamp &ts) const; 91 virtual int64_t getPlayedOutDurationUs(int64_t nowUs) const; 92 virtual status_t getFramesWritten(uint32_t *frameswritten) const; 93 virtual audio_session_t getSessionId() const; 94 virtual uint32_t getSampleRate() const; 95 virtual int64_t getBufferDurationInUs() const; 96 97 virtual status_t open( 98 uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask, 99 audio_format_t format, int bufferCount, 100 AudioCallback cb, void *cookie, 101 audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 102 const audio_offload_info_t *offloadInfo = NULL, 103 bool doNotReconnect = false, 104 uint32_t suggestedFrameCount = 0); 105 106 virtual status_t start(); 107 virtual ssize_t write(const void* buffer, size_t size, bool blocking = true); 108 virtual void stop(); 109 virtual void flush(); 110 virtual void pause(); 111 virtual void close(); 112 void setAudioStreamType(audio_stream_type_t streamType); getAudioStreamType()113 virtual audio_stream_type_t getAudioStreamType() const { return mStreamType; } 114 void setAudioAttributes(const audio_attributes_t * attributes); 115 116 void setVolume(float left, float right); 117 virtual status_t setPlaybackRate(const AudioPlaybackRate& rate); 118 virtual status_t getPlaybackRate(AudioPlaybackRate* rate /* nonnull */); 119 120 status_t setAuxEffectSendLevel(float level); 121 status_t attachAuxEffect(int effectId); 122 virtual status_t dump(int fd, const Vector<String16>& args) const; 123 124 static bool isOnEmulator(); 125 static int getMinBufferCount(); 126 void setNextOutput(const sp<AudioOutput>& nextOutput); 127 void switchToNextOutput(); needsTrailingPadding()128 virtual bool needsTrailingPadding() { return mNextOutput == NULL; } 129 virtual status_t setParameters(const String8& keyValuePairs); 130 virtual String8 getParameters(const String8& keys); 131 132 private: 133 static void setMinBufferCount(); 134 static void CallbackWrapper( 135 int event, void *me, void *info); 136 void deleteRecycledTrack_l(); 137 void close_l(); 138 status_t updateTrack(); 139 140 sp<AudioTrack> mTrack; 141 sp<AudioTrack> mRecycledTrack; 142 sp<AudioOutput> mNextOutput; 143 AudioCallback mCallback; 144 void * mCallbackCookie; 145 CallbackData * mCallbackData; 146 audio_stream_type_t mStreamType; 147 audio_attributes_t * mAttributes; 148 float mLeftVolume; 149 float mRightVolume; 150 AudioPlaybackRate mPlaybackRate; 151 uint32_t mSampleRateHz; // sample rate of the content, as set in open() 152 float mMsecsPerFrame; 153 size_t mFrameSize; 154 audio_session_t mSessionId; 155 int mUid; 156 int mPid; 157 float mSendLevel; 158 int mAuxEffectId; 159 audio_output_flags_t mFlags; 160 mutable Mutex mLock; 161 162 // static variables below not protected by mutex 163 static bool mIsOnEmulator; 164 static int mMinBufferCount; // 12 for emulator; otherwise 4 165 166 // CallbackData is what is passed to the AudioTrack as the "user" data. 167 // We need to be able to target this to a different Output on the fly, 168 // so we can't use the Output itself for this. 169 class CallbackData { 170 friend AudioOutput; 171 public: CallbackData(AudioOutput * cookie)172 CallbackData(AudioOutput *cookie) { 173 mData = cookie; 174 mSwitching = false; 175 } getOutput()176 AudioOutput * getOutput() const { return mData; } setOutput(AudioOutput * newcookie)177 void setOutput(AudioOutput* newcookie) { mData = newcookie; } 178 // lock/unlock are used by the callback before accessing the payload of this object lock()179 void lock() const { mLock.lock(); } unlock()180 void unlock() const { mLock.unlock(); } 181 182 // tryBeginTrackSwitch/endTrackSwitch are used when the CallbackData is handed over 183 // to the next sink. 184 185 // tryBeginTrackSwitch() returns true only if it obtains the lock. tryBeginTrackSwitch()186 bool tryBeginTrackSwitch() { 187 LOG_ALWAYS_FATAL_IF(mSwitching, "tryBeginTrackSwitch() already called"); 188 if (mLock.tryLock() != OK) { 189 return false; 190 } 191 mSwitching = true; 192 return true; 193 } endTrackSwitch()194 void endTrackSwitch() { 195 if (mSwitching) { 196 mLock.unlock(); 197 } 198 mSwitching = false; 199 } 200 private: 201 AudioOutput * mData; 202 mutable Mutex mLock; // a recursive mutex might make this unnecessary. 203 bool mSwitching; 204 DISALLOW_EVIL_CONSTRUCTORS(CallbackData); 205 }; 206 207 }; // AudioOutput 208 209 210 public: 211 static void instantiate(); 212 213 // IMediaPlayerService interface 214 virtual sp<IMediaRecorder> createMediaRecorder(const String16 &opPackageName); 215 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 216 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(); 217 218 virtual sp<IMediaPlayer> create(const sp<IMediaPlayerClient>& client, 219 audio_session_t audioSessionId); 220 221 virtual sp<IMediaCodecList> getCodecList() const; 222 virtual sp<IOMX> getOMX(); 223 virtual sp<IHDCP> makeHDCP(bool createEncryptionModule); 224 225 virtual sp<IRemoteDisplay> listenForRemoteDisplay(const String16 &opPackageName, 226 const sp<IRemoteDisplayClient>& client, const String8& iface); 227 virtual status_t dump(int fd, const Vector<String16>& args); 228 229 void removeClient(wp<Client> client); 230 bool hasClient(wp<Client> client); 231 232 enum { 233 MEDIASERVER_PROCESS_DEATH = 0, 234 MEDIAEXTRACTOR_PROCESS_DEATH = 1, 235 MEDIACODEC_PROCESS_DEATH = 2, 236 AUDIO_PROCESS_DEATH = 3, // currently no need to track this 237 CAMERA_PROCESS_DEATH = 4 238 }; 239 240 // For battery usage tracking purpose 241 struct BatteryUsageInfo { 242 // how many streams are being played by one UID 243 int refCount; 244 // a temp variable to store the duration(ms) of audio codecs 245 // when we start a audio codec, we minus the system time from audioLastTime 246 // when we pause it, we add the system time back to the audioLastTime 247 // so after the pause, audioLastTime = pause time - start time 248 // if multiple audio streams are played (or recorded), then audioLastTime 249 // = the total playing time of all the streams 250 int32_t audioLastTime; 251 // when all the audio streams are being paused, we assign audioLastTime to 252 // this variable, so this value could be provided to the battery app 253 // in the next pullBatteryData call 254 int32_t audioTotalTime; 255 256 int32_t videoLastTime; 257 int32_t videoTotalTime; 258 }; 259 KeyedVector<int, BatteryUsageInfo> mBatteryData; 260 261 enum { 262 SPEAKER, 263 OTHER_AUDIO_DEVICE, 264 SPEAKER_AND_OTHER, 265 NUM_AUDIO_DEVICES 266 }; 267 268 struct BatteryAudioFlingerUsageInfo { 269 int refCount; // how many audio streams are being played 270 int deviceOn[NUM_AUDIO_DEVICES]; // whether the device is currently used 271 int32_t lastTime[NUM_AUDIO_DEVICES]; // in ms 272 // totalTime[]: total time of audio output devices usage 273 int32_t totalTime[NUM_AUDIO_DEVICES]; // in ms 274 }; 275 276 // This varialble is used to record the usage of audio output device 277 // for battery app 278 BatteryAudioFlingerUsageInfo mBatteryAudio; 279 280 // Collect info of the codec usage from media player and media recorder 281 virtual void addBatteryData(uint32_t params); 282 // API for the Battery app to pull the data of codecs usage 283 virtual status_t pullBatteryData(Parcel* reply); 284 private: 285 286 class Client : public BnMediaPlayer { 287 // IMediaPlayer interface 288 virtual void disconnect(); 289 virtual status_t setVideoSurfaceTexture( 290 const sp<IGraphicBufferProducer>& bufferProducer); 291 virtual status_t prepareAsync(); 292 virtual status_t start(); 293 virtual status_t stop(); 294 virtual status_t pause(); 295 virtual status_t isPlaying(bool* state); 296 virtual status_t setPlaybackSettings(const AudioPlaybackRate& rate); 297 virtual status_t getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */); 298 virtual status_t setSyncSettings(const AVSyncSettings& rate, float videoFpsHint); 299 virtual status_t getSyncSettings(AVSyncSettings* rate /* nonnull */, 300 float* videoFps /* nonnull */); 301 virtual status_t seekTo(int msec); 302 virtual status_t getCurrentPosition(int* msec); 303 virtual status_t getDuration(int* msec); 304 virtual status_t reset(); 305 virtual status_t setAudioStreamType(audio_stream_type_t type); 306 virtual status_t setLooping(int loop); 307 virtual status_t setVolume(float leftVolume, float rightVolume); 308 virtual status_t invoke(const Parcel& request, Parcel *reply); 309 virtual status_t setMetadataFilter(const Parcel& filter); 310 virtual status_t getMetadata(bool update_only, 311 bool apply_filter, 312 Parcel *reply); 313 virtual status_t setAuxEffectSendLevel(float level); 314 virtual status_t attachAuxEffect(int effectId); 315 virtual status_t setParameter(int key, const Parcel &request); 316 virtual status_t getParameter(int key, Parcel *reply); 317 virtual status_t setRetransmitEndpoint(const struct sockaddr_in* endpoint); 318 virtual status_t getRetransmitEndpoint(struct sockaddr_in* endpoint); 319 virtual status_t setNextPlayer(const sp<IMediaPlayer>& player); 320 321 sp<MediaPlayerBase> createPlayer(player_type playerType); 322 323 virtual status_t setDataSource( 324 const sp<IMediaHTTPService> &httpService, 325 const char *url, 326 const KeyedVector<String8, String8> *headers); 327 328 virtual status_t setDataSource(int fd, int64_t offset, int64_t length); 329 330 virtual status_t setDataSource(const sp<IStreamSource> &source); 331 virtual status_t setDataSource(const sp<IDataSource> &source); 332 333 334 sp<MediaPlayerBase> setDataSource_pre(player_type playerType); 335 void setDataSource_post(const sp<MediaPlayerBase>& p, 336 status_t status); 337 338 static void notify(void* cookie, int msg, 339 int ext1, int ext2, const Parcel *obj); 340 pid()341 pid_t pid() const { return mPid; } 342 virtual status_t dump(int fd, const Vector<String16>& args); 343 getAudioSessionId()344 audio_session_t getAudioSessionId() { return mAudioSessionId; } 345 346 private: 347 class ServiceDeathNotifier: public IBinder::DeathRecipient 348 { 349 public: 350 ServiceDeathNotifier( 351 const sp<IBinder>& service, 352 const sp<MediaPlayerBase>& listener, 353 int which); 354 virtual ~ServiceDeathNotifier(); 355 virtual void binderDied(const wp<IBinder>& who); 356 357 private: 358 int mWhich; 359 sp<IBinder> mService; 360 wp<MediaPlayerBase> mListener; 361 }; 362 363 friend class MediaPlayerService; 364 Client( const sp<MediaPlayerService>& service, 365 pid_t pid, 366 int32_t connId, 367 const sp<IMediaPlayerClient>& client, 368 audio_session_t audioSessionId, 369 uid_t uid); 370 Client(); 371 virtual ~Client(); 372 373 void deletePlayer(); 374 getPlayer()375 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 376 377 378 379 // @param type Of the metadata to be tested. 380 // @return true if the metadata should be dropped according to 381 // the filters. 382 bool shouldDropMetadata(media::Metadata::Type type) const; 383 384 // Add a new element to the set of metadata updated. Noop if 385 // the element exists already. 386 // @param type Of the metadata to be recorded. 387 void addNewMetadataUpdate(media::Metadata::Type type); 388 389 // Disconnect from the currently connected ANativeWindow. 390 void disconnectNativeWindow(); 391 392 status_t setAudioAttributes_l(const Parcel &request); 393 394 mutable Mutex mLock; 395 sp<MediaPlayerBase> mPlayer; 396 sp<MediaPlayerService> mService; 397 sp<IMediaPlayerClient> mClient; 398 sp<AudioOutput> mAudioOutput; 399 pid_t mPid; 400 status_t mStatus; 401 bool mLoop; 402 int32_t mConnId; 403 audio_session_t mAudioSessionId; 404 audio_attributes_t * mAudioAttributes; 405 uid_t mUID; 406 sp<ANativeWindow> mConnectedWindow; 407 sp<IBinder> mConnectedWindowBinder; 408 struct sockaddr_in mRetransmitEndpoint; 409 bool mRetransmitEndpointValid; 410 sp<Client> mNextClient; 411 412 // Metadata filters. 413 media::Metadata::Filter mMetadataAllow; // protected by mLock 414 media::Metadata::Filter mMetadataDrop; // protected by mLock 415 416 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 417 // notification we try to update mMetadataUpdated which is a 418 // set: no duplicate. 419 // getMetadata clears this set. 420 media::Metadata::Filter mMetadataUpdated; // protected by mLock 421 422 sp<IBinder::DeathRecipient> mExtractorDeathListener; 423 sp<IBinder::DeathRecipient> mCodecDeathListener; 424 #if CALLBACK_ANTAGONIZER 425 Antagonizer* mAntagonizer; 426 #endif 427 }; // Client 428 429 // ---------------------------------------------------------------------------- 430 431 MediaPlayerService(); 432 virtual ~MediaPlayerService(); 433 434 mutable Mutex mLock; 435 SortedVector< wp<Client> > mClients; 436 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 437 int32_t mNextConnId; 438 sp<IOMX> mOMX; 439 }; 440 441 // ---------------------------------------------------------------------------- 442 443 }; // namespace android 444 445 #endif // ANDROID_MEDIAPLAYERSERVICE_H 446