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); 53 void start() { mActive = true; } 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 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); 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(); 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(); 138 139 sp<AudioTrack> mTrack; 140 sp<AudioTrack> mRecycledTrack; 141 sp<AudioOutput> mNextOutput; 142 AudioCallback mCallback; 143 void * mCallbackCookie; 144 CallbackData * mCallbackData; 145 audio_stream_type_t mStreamType; 146 audio_attributes_t * mAttributes; 147 float mLeftVolume; 148 float mRightVolume; 149 AudioPlaybackRate mPlaybackRate; 150 uint32_t mSampleRateHz; // sample rate of the content, as set in open() 151 float mMsecsPerFrame; 152 size_t mFrameSize; 153 audio_session_t mSessionId; 154 int mUid; 155 int mPid; 156 float mSendLevel; 157 int mAuxEffectId; 158 audio_output_flags_t mFlags; 159 mutable Mutex mLock; 160 161 // static variables below not protected by mutex 162 static bool mIsOnEmulator; 163 static int mMinBufferCount; // 12 for emulator; otherwise 4 164 165 // CallbackData is what is passed to the AudioTrack as the "user" data. 166 // We need to be able to target this to a different Output on the fly, 167 // so we can't use the Output itself for this. 168 class CallbackData { 169 friend AudioOutput; 170 public: 171 CallbackData(AudioOutput *cookie) { 172 mData = cookie; 173 mSwitching = false; 174 } 175 AudioOutput * getOutput() const { return mData; } 176 void setOutput(AudioOutput* newcookie) { mData = newcookie; } 177 // lock/unlock are used by the callback before accessing the payload of this object 178 void lock() const { mLock.lock(); } 179 void unlock() const { mLock.unlock(); } 180 181 // tryBeginTrackSwitch/endTrackSwitch are used when the CallbackData is handed over 182 // to the next sink. 183 184 // tryBeginTrackSwitch() returns true only if it obtains the lock. 185 bool tryBeginTrackSwitch() { 186 LOG_ALWAYS_FATAL_IF(mSwitching, "tryBeginTrackSwitch() already called"); 187 if (mLock.tryLock() != OK) { 188 return false; 189 } 190 mSwitching = true; 191 return true; 192 } 193 void endTrackSwitch() { 194 if (mSwitching) { 195 mLock.unlock(); 196 } 197 mSwitching = false; 198 } 199 private: 200 AudioOutput * mData; 201 mutable Mutex mLock; // a recursive mutex might make this unnecessary. 202 bool mSwitching; 203 DISALLOW_EVIL_CONSTRUCTORS(CallbackData); 204 }; 205 206 }; // AudioOutput 207 208 209 public: 210 static void instantiate(); 211 212 // IMediaPlayerService interface 213 virtual sp<IMediaRecorder> createMediaRecorder(const String16 &opPackageName); 214 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 215 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(); 216 217 virtual sp<IMediaPlayer> create(const sp<IMediaPlayerClient>& client, 218 audio_session_t audioSessionId); 219 220 virtual sp<IMediaCodecList> getCodecList() const; 221 virtual sp<IOMX> getOMX(); 222 virtual sp<IHDCP> makeHDCP(bool createEncryptionModule); 223 224 virtual sp<IRemoteDisplay> listenForRemoteDisplay(const String16 &opPackageName, 225 const sp<IRemoteDisplayClient>& client, const String8& iface); 226 virtual status_t dump(int fd, const Vector<String16>& args); 227 228 void removeClient(wp<Client> client); 229 230 enum { 231 MEDIASERVER_PROCESS_DEATH = 0, 232 MEDIAEXTRACTOR_PROCESS_DEATH = 1, 233 MEDIACODEC_PROCESS_DEATH = 2, 234 AUDIO_PROCESS_DEATH = 3, // currently no need to track this 235 CAMERA_PROCESS_DEATH = 4 236 }; 237 238 // For battery usage tracking purpose 239 struct BatteryUsageInfo { 240 // how many streams are being played by one UID 241 int refCount; 242 // a temp variable to store the duration(ms) of audio codecs 243 // when we start a audio codec, we minus the system time from audioLastTime 244 // when we pause it, we add the system time back to the audioLastTime 245 // so after the pause, audioLastTime = pause time - start time 246 // if multiple audio streams are played (or recorded), then audioLastTime 247 // = the total playing time of all the streams 248 int32_t audioLastTime; 249 // when all the audio streams are being paused, we assign audioLastTime to 250 // this variable, so this value could be provided to the battery app 251 // in the next pullBatteryData call 252 int32_t audioTotalTime; 253 254 int32_t videoLastTime; 255 int32_t videoTotalTime; 256 }; 257 KeyedVector<int, BatteryUsageInfo> mBatteryData; 258 259 enum { 260 SPEAKER, 261 OTHER_AUDIO_DEVICE, 262 SPEAKER_AND_OTHER, 263 NUM_AUDIO_DEVICES 264 }; 265 266 struct BatteryAudioFlingerUsageInfo { 267 int refCount; // how many audio streams are being played 268 int deviceOn[NUM_AUDIO_DEVICES]; // whether the device is currently used 269 int32_t lastTime[NUM_AUDIO_DEVICES]; // in ms 270 // totalTime[]: total time of audio output devices usage 271 int32_t totalTime[NUM_AUDIO_DEVICES]; // in ms 272 }; 273 274 // This varialble is used to record the usage of audio output device 275 // for battery app 276 BatteryAudioFlingerUsageInfo mBatteryAudio; 277 278 // Collect info of the codec usage from media player and media recorder 279 virtual void addBatteryData(uint32_t params); 280 // API for the Battery app to pull the data of codecs usage 281 virtual status_t pullBatteryData(Parcel* reply); 282 private: 283 284 class Client : public BnMediaPlayer { 285 // IMediaPlayer interface 286 virtual void disconnect(); 287 virtual status_t setVideoSurfaceTexture( 288 const sp<IGraphicBufferProducer>& bufferProducer); 289 virtual status_t prepareAsync(); 290 virtual status_t start(); 291 virtual status_t stop(); 292 virtual status_t pause(); 293 virtual status_t isPlaying(bool* state); 294 virtual status_t setPlaybackSettings(const AudioPlaybackRate& rate); 295 virtual status_t getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */); 296 virtual status_t setSyncSettings(const AVSyncSettings& rate, float videoFpsHint); 297 virtual status_t getSyncSettings(AVSyncSettings* rate /* nonnull */, 298 float* videoFps /* nonnull */); 299 virtual status_t seekTo(int msec); 300 virtual status_t getCurrentPosition(int* msec); 301 virtual status_t getDuration(int* msec); 302 virtual status_t reset(); 303 virtual status_t setAudioStreamType(audio_stream_type_t type); 304 virtual status_t setLooping(int loop); 305 virtual status_t setVolume(float leftVolume, float rightVolume); 306 virtual status_t invoke(const Parcel& request, Parcel *reply); 307 virtual status_t setMetadataFilter(const Parcel& filter); 308 virtual status_t getMetadata(bool update_only, 309 bool apply_filter, 310 Parcel *reply); 311 virtual status_t setAuxEffectSendLevel(float level); 312 virtual status_t attachAuxEffect(int effectId); 313 virtual status_t setParameter(int key, const Parcel &request); 314 virtual status_t getParameter(int key, Parcel *reply); 315 virtual status_t setRetransmitEndpoint(const struct sockaddr_in* endpoint); 316 virtual status_t getRetransmitEndpoint(struct sockaddr_in* endpoint); 317 virtual status_t setNextPlayer(const sp<IMediaPlayer>& player); 318 319 sp<MediaPlayerBase> createPlayer(player_type playerType); 320 321 virtual status_t setDataSource( 322 const sp<IMediaHTTPService> &httpService, 323 const char *url, 324 const KeyedVector<String8, String8> *headers); 325 326 virtual status_t setDataSource(int fd, int64_t offset, int64_t length); 327 328 virtual status_t setDataSource(const sp<IStreamSource> &source); 329 virtual status_t setDataSource(const sp<IDataSource> &source); 330 331 332 sp<MediaPlayerBase> setDataSource_pre(player_type playerType); 333 void setDataSource_post(const sp<MediaPlayerBase>& p, 334 status_t status); 335 336 static void notify(void* cookie, int msg, 337 int ext1, int ext2, const Parcel *obj); 338 339 pid_t pid() const { return mPid; } 340 virtual status_t dump(int fd, const Vector<String16>& args); 341 342 audio_session_t getAudioSessionId() { return mAudioSessionId; } 343 344 private: 345 class ServiceDeathNotifier: public IBinder::DeathRecipient 346 { 347 public: 348 ServiceDeathNotifier( 349 const sp<IBinder>& service, 350 const sp<MediaPlayerBase>& listener, 351 int which); 352 virtual ~ServiceDeathNotifier(); 353 virtual void binderDied(const wp<IBinder>& who); 354 355 private: 356 int mWhich; 357 sp<IBinder> mService; 358 wp<MediaPlayerBase> mListener; 359 }; 360 361 friend class MediaPlayerService; 362 Client( const sp<MediaPlayerService>& service, 363 pid_t pid, 364 int32_t connId, 365 const sp<IMediaPlayerClient>& client, 366 audio_session_t audioSessionId, 367 uid_t uid); 368 Client(); 369 virtual ~Client(); 370 371 void deletePlayer(); 372 373 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 374 375 376 377 // @param type Of the metadata to be tested. 378 // @return true if the metadata should be dropped according to 379 // the filters. 380 bool shouldDropMetadata(media::Metadata::Type type) const; 381 382 // Add a new element to the set of metadata updated. Noop if 383 // the element exists already. 384 // @param type Of the metadata to be recorded. 385 void addNewMetadataUpdate(media::Metadata::Type type); 386 387 // Disconnect from the currently connected ANativeWindow. 388 void disconnectNativeWindow(); 389 390 status_t setAudioAttributes_l(const Parcel &request); 391 392 mutable Mutex mLock; 393 sp<MediaPlayerBase> mPlayer; 394 sp<MediaPlayerService> mService; 395 sp<IMediaPlayerClient> mClient; 396 sp<AudioOutput> mAudioOutput; 397 pid_t mPid; 398 status_t mStatus; 399 bool mLoop; 400 int32_t mConnId; 401 audio_session_t mAudioSessionId; 402 audio_attributes_t * mAudioAttributes; 403 uid_t mUID; 404 sp<ANativeWindow> mConnectedWindow; 405 sp<IBinder> mConnectedWindowBinder; 406 struct sockaddr_in mRetransmitEndpoint; 407 bool mRetransmitEndpointValid; 408 sp<Client> mNextClient; 409 410 // Metadata filters. 411 media::Metadata::Filter mMetadataAllow; // protected by mLock 412 media::Metadata::Filter mMetadataDrop; // protected by mLock 413 414 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 415 // notification we try to update mMetadataUpdated which is a 416 // set: no duplicate. 417 // getMetadata clears this set. 418 media::Metadata::Filter mMetadataUpdated; // protected by mLock 419 420 sp<IBinder::DeathRecipient> mExtractorDeathListener; 421 sp<IBinder::DeathRecipient> mCodecDeathListener; 422 #if CALLBACK_ANTAGONIZER 423 Antagonizer* mAntagonizer; 424 #endif 425 }; // Client 426 427 // ---------------------------------------------------------------------------- 428 429 MediaPlayerService(); 430 virtual ~MediaPlayerService(); 431 432 mutable Mutex mLock; 433 SortedVector< wp<Client> > mClients; 434 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 435 int32_t mNextConnId; 436 sp<IOMX> mOMX; 437 }; 438 439 // ---------------------------------------------------------------------------- 440 441 }; // namespace android 442 443 #endif // ANDROID_MEDIAPLAYERSERVICE_H 444
