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 <utils/Log.h> 22 #include <utils/threads.h> 23 #include <utils/List.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/IMediaPlayerService.h> 30 #include <media/MediaPlayerInterface.h> 31 #include <media/Metadata.h> 32 33 #include <system/audio.h> 34 35 namespace android { 36 37 class IMediaRecorder; 38 class IMediaMetadataRetriever; 39 class IOMX; 40 class MediaRecorderClient; 41 42 #define CALLBACK_ANTAGONIZER 0 43 #if CALLBACK_ANTAGONIZER 44 class Antagonizer { 45 public: 46 Antagonizer(notify_callback_f cb, void* client); start()47 void start() { mActive = true; } stop()48 void stop() { mActive = false; } 49 void kill(); 50 private: 51 static const int interval; 52 Antagonizer(); 53 static int callbackThread(void* cookie); 54 Mutex mLock; 55 Condition mCondition; 56 bool mExit; 57 bool mActive; 58 void* mClient; 59 notify_callback_f mCb; 60 }; 61 #endif 62 63 class MediaPlayerService : public BnMediaPlayerService 64 { 65 class Client; 66 67 class AudioOutput : public MediaPlayerBase::AudioSink 68 { 69 public: 70 AudioOutput(int sessionId); 71 virtual ~AudioOutput(); 72 ready()73 virtual bool ready() const { return mTrack != NULL; } realtime()74 virtual bool realtime() const { return true; } 75 virtual ssize_t bufferSize() const; 76 virtual ssize_t frameCount() const; 77 virtual ssize_t channelCount() const; 78 virtual ssize_t frameSize() const; 79 virtual uint32_t latency() const; 80 virtual float msecsPerFrame() const; 81 virtual status_t getPosition(uint32_t *position); 82 virtual int getSessionId(); 83 84 virtual status_t open( 85 uint32_t sampleRate, int channelCount, 86 int format, int bufferCount, 87 AudioCallback cb, void *cookie); 88 89 virtual void start(); 90 virtual ssize_t write(const void* buffer, size_t size); 91 virtual void stop(); 92 virtual void flush(); 93 virtual void pause(); 94 virtual void close(); setAudioStreamType(int streamType)95 void setAudioStreamType(int streamType) { mStreamType = streamType; } 96 void setVolume(float left, float right); 97 status_t setAuxEffectSendLevel(float level); 98 status_t attachAuxEffect(int effectId); 99 virtual status_t dump(int fd, const Vector<String16>& args) const; 100 101 static bool isOnEmulator(); 102 static int getMinBufferCount(); 103 private: 104 static void setMinBufferCount(); 105 static void CallbackWrapper( 106 int event, void *me, void *info); 107 108 AudioTrack* mTrack; 109 AudioCallback mCallback; 110 void * mCallbackCookie; 111 int mStreamType; 112 float mLeftVolume; 113 float mRightVolume; 114 float mMsecsPerFrame; 115 uint32_t mLatency; 116 int mSessionId; 117 float mSendLevel; 118 int mAuxEffectId; 119 static bool mIsOnEmulator; 120 static int mMinBufferCount; // 12 for emulator; otherwise 4 121 122 }; 123 124 class AudioCache : public MediaPlayerBase::AudioSink 125 { 126 public: 127 AudioCache(const char* name); ~AudioCache()128 virtual ~AudioCache() {} 129 ready()130 virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); } realtime()131 virtual bool realtime() const { return false; } bufferSize()132 virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; } frameCount()133 virtual ssize_t frameCount() const { return mFrameCount; } channelCount()134 virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; } frameSize()135 virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AUDIO_FORMAT_PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); } 136 virtual uint32_t latency() const; 137 virtual float msecsPerFrame() const; 138 virtual status_t getPosition(uint32_t *position); 139 virtual int getSessionId(); 140 141 virtual status_t open( 142 uint32_t sampleRate, int channelCount, int format, 143 int bufferCount = 1, 144 AudioCallback cb = NULL, void *cookie = NULL); 145 146 virtual void start(); 147 virtual ssize_t write(const void* buffer, size_t size); 148 virtual void stop(); flush()149 virtual void flush() {} pause()150 virtual void pause() {} close()151 virtual void close() {} setAudioStreamType(int streamType)152 void setAudioStreamType(int streamType) {} setVolume(float left,float right)153 void setVolume(float left, float right) {} sampleRate()154 uint32_t sampleRate() const { return mSampleRate; } format()155 uint32_t format() const { return (uint32_t)mFormat; } size()156 size_t size() const { return mSize; } 157 status_t wait(); 158 getHeap()159 sp<IMemoryHeap> getHeap() const { return mHeap; } 160 161 static void notify(void* cookie, int msg, 162 int ext1, int ext2, const Parcel *obj); 163 virtual status_t dump(int fd, const Vector<String16>& args) const; 164 165 private: 166 AudioCache(); 167 168 Mutex mLock; 169 Condition mSignal; 170 sp<MemoryHeapBase> mHeap; 171 float mMsecsPerFrame; 172 uint16_t mChannelCount; 173 uint16_t mFormat; 174 ssize_t mFrameCount; 175 uint32_t mSampleRate; 176 uint32_t mSize; 177 int mError; 178 bool mCommandComplete; 179 180 sp<Thread> mCallbackThread; 181 }; 182 183 public: 184 static void instantiate(); 185 186 // IMediaPlayerService interface 187 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid); 188 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 189 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid); 190 191 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int audioSessionId); 192 193 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat); 194 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat); 195 virtual sp<IOMX> getOMX(); 196 197 virtual status_t dump(int fd, const Vector<String16>& args); 198 199 void removeClient(wp<Client> client); 200 201 // For battery usage tracking purpose 202 struct BatteryUsageInfo { 203 // how many streams are being played by one UID 204 int refCount; 205 // a temp variable to store the duration(ms) of audio codecs 206 // when we start a audio codec, we minus the system time from audioLastTime 207 // when we pause it, we add the system time back to the audioLastTime 208 // so after the pause, audioLastTime = pause time - start time 209 // if multiple audio streams are played (or recorded), then audioLastTime 210 // = the total playing time of all the streams 211 int32_t audioLastTime; 212 // when all the audio streams are being paused, we assign audioLastTime to 213 // this variable, so this value could be provided to the battery app 214 // in the next pullBatteryData call 215 int32_t audioTotalTime; 216 217 int32_t videoLastTime; 218 int32_t videoTotalTime; 219 }; 220 KeyedVector<int, BatteryUsageInfo> mBatteryData; 221 222 enum { 223 SPEAKER, 224 OTHER_AUDIO_DEVICE, 225 SPEAKER_AND_OTHER, 226 NUM_AUDIO_DEVICES 227 }; 228 229 struct BatteryAudioFlingerUsageInfo { 230 int refCount; // how many audio streams are being played 231 int deviceOn[NUM_AUDIO_DEVICES]; // whether the device is currently used 232 int32_t lastTime[NUM_AUDIO_DEVICES]; // in ms 233 // totalTime[]: total time of audio output devices usage 234 int32_t totalTime[NUM_AUDIO_DEVICES]; // in ms 235 }; 236 237 // This varialble is used to record the usage of audio output device 238 // for battery app 239 BatteryAudioFlingerUsageInfo mBatteryAudio; 240 241 // Collect info of the codec usage from media player and media recorder 242 virtual void addBatteryData(uint32_t params); 243 // API for the Battery app to pull the data of codecs usage 244 virtual status_t pullBatteryData(Parcel* reply); 245 private: 246 247 class Client : public BnMediaPlayer { 248 249 // IMediaPlayer interface 250 virtual void disconnect(); 251 virtual status_t setVideoSurface(const sp<Surface>& surface); 252 virtual status_t setVideoSurfaceTexture( 253 const sp<ISurfaceTexture>& surfaceTexture); 254 virtual status_t prepareAsync(); 255 virtual status_t start(); 256 virtual status_t stop(); 257 virtual status_t pause(); 258 virtual status_t isPlaying(bool* state); 259 virtual status_t seekTo(int msec); 260 virtual status_t getCurrentPosition(int* msec); 261 virtual status_t getDuration(int* msec); 262 virtual status_t reset(); 263 virtual status_t setAudioStreamType(int type); 264 virtual status_t setLooping(int loop); 265 virtual status_t setVolume(float leftVolume, float rightVolume); 266 virtual status_t invoke(const Parcel& request, Parcel *reply); 267 virtual status_t setMetadataFilter(const Parcel& filter); 268 virtual status_t getMetadata(bool update_only, 269 bool apply_filter, 270 Parcel *reply); 271 virtual status_t setAuxEffectSendLevel(float level); 272 virtual status_t attachAuxEffect(int effectId); 273 virtual status_t setParameter(int key, const Parcel &request); 274 virtual status_t getParameter(int key, Parcel *reply); 275 276 sp<MediaPlayerBase> createPlayer(player_type playerType); 277 278 virtual status_t setDataSource( 279 const char *url, 280 const KeyedVector<String8, String8> *headers); 281 282 virtual status_t setDataSource(int fd, int64_t offset, int64_t length); 283 284 virtual status_t setDataSource(const sp<IStreamSource> &source); 285 286 static void notify(void* cookie, int msg, 287 int ext1, int ext2, const Parcel *obj); 288 pid()289 pid_t pid() const { return mPid; } 290 virtual status_t dump(int fd, const Vector<String16>& args) const; 291 getAudioSessionId()292 int getAudioSessionId() { return mAudioSessionId; } 293 294 private: 295 friend class MediaPlayerService; 296 Client( const sp<MediaPlayerService>& service, 297 pid_t pid, 298 int32_t connId, 299 const sp<IMediaPlayerClient>& client, 300 int audioSessionId, 301 uid_t uid); 302 Client(); 303 virtual ~Client(); 304 305 void deletePlayer(); 306 getPlayer()307 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 308 309 310 311 // @param type Of the metadata to be tested. 312 // @return true if the metadata should be dropped according to 313 // the filters. 314 bool shouldDropMetadata(media::Metadata::Type type) const; 315 316 // Add a new element to the set of metadata updated. Noop if 317 // the element exists already. 318 // @param type Of the metadata to be recorded. 319 void addNewMetadataUpdate(media::Metadata::Type type); 320 321 // Disconnect from the currently connected ANativeWindow. 322 void disconnectNativeWindow(); 323 324 mutable Mutex mLock; 325 sp<MediaPlayerBase> mPlayer; 326 sp<MediaPlayerService> mService; 327 sp<IMediaPlayerClient> mClient; 328 sp<AudioOutput> mAudioOutput; 329 pid_t mPid; 330 status_t mStatus; 331 bool mLoop; 332 int32_t mConnId; 333 int mAudioSessionId; 334 uid_t mUID; 335 sp<ANativeWindow> mConnectedWindow; 336 sp<IBinder> mConnectedWindowBinder; 337 338 // Metadata filters. 339 media::Metadata::Filter mMetadataAllow; // protected by mLock 340 media::Metadata::Filter mMetadataDrop; // protected by mLock 341 342 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 343 // notification we try to update mMetadataUpdated which is a 344 // set: no duplicate. 345 // getMetadata clears this set. 346 media::Metadata::Filter mMetadataUpdated; // protected by mLock 347 348 #if CALLBACK_ANTAGONIZER 349 Antagonizer* mAntagonizer; 350 #endif 351 }; 352 353 // ---------------------------------------------------------------------------- 354 355 MediaPlayerService(); 356 virtual ~MediaPlayerService(); 357 358 mutable Mutex mLock; 359 SortedVector< wp<Client> > mClients; 360 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 361 int32_t mNextConnId; 362 sp<IOMX> mOMX; 363 }; 364 365 // ---------------------------------------------------------------------------- 366 367 }; // namespace android 368 369 #endif // ANDROID_MEDIAPLAYERSERVICE_H 370