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