MediaPlayerService.h revision 6b74d671a1321a6ecc4a40b6c87beedfecc1ec44
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/Log.h> 24#include <utils/threads.h> 25#include <utils/List.h> 26#include <utils/Errors.h> 27#include <utils/KeyedVector.h> 28#include <utils/String8.h> 29#include <utils/Vector.h> 30 31#include <media/IMediaPlayerService.h> 32#include <media/MediaPlayerInterface.h> 33#include <media/Metadata.h> 34#include <media/stagefright/foundation/ABase.h> 35 36#include <system/audio.h> 37 38namespace android { 39 40class AudioTrack; 41class IMediaRecorder; 42class IMediaMetadataRetriever; 43class IOMX; 44class MediaRecorderClient; 45 46#define CALLBACK_ANTAGONIZER 0 47#if CALLBACK_ANTAGONIZER 48class Antagonizer { 49public: 50 Antagonizer(notify_callback_f cb, void* client); 51 void start() { mActive = true; } 52 void stop() { mActive = false; } 53 void kill(); 54private: 55 static const int interval; 56 Antagonizer(); 57 static int callbackThread(void* cookie); 58 Mutex mLock; 59 Condition mCondition; 60 bool mExit; 61 bool mActive; 62 void* mClient; 63 notify_callback_f mCb; 64}; 65#endif 66 67class MediaPlayerService : public BnMediaPlayerService 68{ 69 class Client; 70 71 class AudioOutput : public MediaPlayerBase::AudioSink 72 { 73 class CallbackData; 74 75 public: 76 AudioOutput(int sessionId); 77 virtual ~AudioOutput(); 78 79 virtual bool ready() const { return mTrack != NULL; } 80 virtual bool realtime() const { return true; } 81 virtual ssize_t bufferSize() const; 82 virtual ssize_t frameCount() const; 83 virtual ssize_t channelCount() const; 84 virtual ssize_t frameSize() const; 85 virtual uint32_t latency() const; 86 virtual float msecsPerFrame() const; 87 virtual status_t getPosition(uint32_t *position); 88 virtual int getSessionId(); 89 90 virtual status_t open( 91 uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask, 92 audio_format_t format, int bufferCount, 93 AudioCallback cb, void *cookie); 94 95 virtual void start(); 96 virtual ssize_t write(const void* buffer, size_t size); 97 virtual void stop(); 98 virtual void flush(); 99 virtual void pause(); 100 virtual void close(); 101 void setAudioStreamType(audio_stream_type_t streamType) { mStreamType = streamType; } 102 void setVolume(float left, float right); 103 virtual status_t setPlaybackRatePermille(int32_t ratePermille); 104 status_t setAuxEffectSendLevel(float level); 105 status_t attachAuxEffect(int effectId); 106 virtual status_t dump(int fd, const Vector<String16>& args) const; 107 108 static bool isOnEmulator(); 109 static int getMinBufferCount(); 110 void setNextOutput(const sp<AudioOutput>& nextOutput); 111 void switchToNextOutput(); 112 virtual bool needsTrailingPadding() { return mNextOutput == NULL; } 113 114 private: 115 static void setMinBufferCount(); 116 static void CallbackWrapper( 117 int event, void *me, void *info); 118 119 AudioTrack* mTrack; 120 AudioTrack* mRecycledTrack; 121 sp<AudioOutput> mNextOutput; 122 AudioCallback mCallback; 123 void * mCallbackCookie; 124 CallbackData * mCallbackData; 125 audio_stream_type_t mStreamType; 126 float mLeftVolume; 127 float mRightVolume; 128 int32_t mPlaybackRatePermille; 129 uint32_t mSampleRateHz; // sample rate of the content, as set in open() 130 float mMsecsPerFrame; 131 int mSessionId; 132 float mSendLevel; 133 int mAuxEffectId; 134 static bool mIsOnEmulator; 135 static int mMinBufferCount; // 12 for emulator; otherwise 4 136 137 // CallbackData is what is passed to the AudioTrack as the "user" data. 138 // We need to be able to target this to a different Output on the fly, 139 // so we can't use the Output itself for this. 140 class CallbackData { 141 public: 142 CallbackData(AudioOutput *cookie) { 143 mData = cookie; 144 mSwitching = false; 145 } 146 AudioOutput * getOutput() { return mData;} 147 void setOutput(AudioOutput* newcookie) { mData = newcookie; } 148 // lock/unlock are used by the callback before accessing the payload of this object 149 void lock() { mLock.lock(); } 150 void unlock() { mLock.unlock(); } 151 // beginTrackSwitch/endTrackSwitch are used when this object is being handed over 152 // to the next sink. 153 void beginTrackSwitch() { mLock.lock(); mSwitching = true; } 154 void endTrackSwitch() { 155 if (mSwitching) { 156 mLock.unlock(); 157 } 158 mSwitching = false; 159 } 160 private: 161 AudioOutput * mData; 162 mutable Mutex mLock; 163 bool mSwitching; 164 DISALLOW_EVIL_CONSTRUCTORS(CallbackData); 165 }; 166 167 }; // AudioOutput 168 169 170 class AudioCache : public MediaPlayerBase::AudioSink 171 { 172 public: 173 AudioCache(const char* name); 174 virtual ~AudioCache() {} 175 176 virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); } 177 virtual bool realtime() const { return false; } 178 virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; } 179 virtual ssize_t frameCount() const { return mFrameCount; } 180 virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; } 181 virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AUDIO_FORMAT_PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); } 182 virtual uint32_t latency() const; 183 virtual float msecsPerFrame() const; 184 virtual status_t getPosition(uint32_t *position); 185 virtual int getSessionId(); 186 187 virtual status_t open( 188 uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask, 189 audio_format_t format, int bufferCount = 1, 190 AudioCallback cb = NULL, void *cookie = NULL); 191 192 virtual void start(); 193 virtual ssize_t write(const void* buffer, size_t size); 194 virtual void stop(); 195 virtual void flush() {} 196 virtual void pause() {} 197 virtual void close() {} 198 void setAudioStreamType(audio_stream_type_t streamType) {} 199 void setVolume(float left, float right) {} 200 virtual status_t setPlaybackRatePermille(int32_t ratePermille) { return INVALID_OPERATION; } 201 uint32_t sampleRate() const { return mSampleRate; } 202 audio_format_t format() const { return mFormat; } 203 size_t size() const { return mSize; } 204 status_t wait(); 205 206 sp<IMemoryHeap> getHeap() const { return mHeap; } 207 208 static void notify(void* cookie, int msg, 209 int ext1, int ext2, const Parcel *obj); 210 virtual status_t dump(int fd, const Vector<String16>& args) const; 211 212 private: 213 AudioCache(); 214 215 Mutex mLock; 216 Condition mSignal; 217 sp<MemoryHeapBase> mHeap; 218 float mMsecsPerFrame; 219 uint16_t mChannelCount; 220 audio_format_t mFormat; 221 ssize_t mFrameCount; 222 uint32_t mSampleRate; 223 uint32_t mSize; 224 int mError; 225 bool mCommandComplete; 226 227 sp<Thread> mCallbackThread; 228 }; // AudioCache 229 230public: 231 static void instantiate(); 232 233 // IMediaPlayerService interface 234 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid); 235 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 236 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid); 237 238 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int audioSessionId); 239 240 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat); 241 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat); 242 virtual sp<IOMX> getOMX(); 243 244 virtual status_t dump(int fd, const Vector<String16>& args); 245 246 void removeClient(wp<Client> client); 247 248 // For battery usage tracking purpose 249 struct BatteryUsageInfo { 250 // how many streams are being played by one UID 251 int refCount; 252 // a temp variable to store the duration(ms) of audio codecs 253 // when we start a audio codec, we minus the system time from audioLastTime 254 // when we pause it, we add the system time back to the audioLastTime 255 // so after the pause, audioLastTime = pause time - start time 256 // if multiple audio streams are played (or recorded), then audioLastTime 257 // = the total playing time of all the streams 258 int32_t audioLastTime; 259 // when all the audio streams are being paused, we assign audioLastTime to 260 // this variable, so this value could be provided to the battery app 261 // in the next pullBatteryData call 262 int32_t audioTotalTime; 263 264 int32_t videoLastTime; 265 int32_t videoTotalTime; 266 }; 267 KeyedVector<int, BatteryUsageInfo> mBatteryData; 268 269 enum { 270 SPEAKER, 271 OTHER_AUDIO_DEVICE, 272 SPEAKER_AND_OTHER, 273 NUM_AUDIO_DEVICES 274 }; 275 276 struct BatteryAudioFlingerUsageInfo { 277 int refCount; // how many audio streams are being played 278 int deviceOn[NUM_AUDIO_DEVICES]; // whether the device is currently used 279 int32_t lastTime[NUM_AUDIO_DEVICES]; // in ms 280 // totalTime[]: total time of audio output devices usage 281 int32_t totalTime[NUM_AUDIO_DEVICES]; // in ms 282 }; 283 284 // This varialble is used to record the usage of audio output device 285 // for battery app 286 BatteryAudioFlingerUsageInfo mBatteryAudio; 287 288 // Collect info of the codec usage from media player and media recorder 289 virtual void addBatteryData(uint32_t params); 290 // API for the Battery app to pull the data of codecs usage 291 virtual status_t pullBatteryData(Parcel* reply); 292private: 293 294 class Client : public BnMediaPlayer { 295 296 // IMediaPlayer interface 297 virtual void disconnect(); 298 virtual status_t setVideoSurfaceTexture( 299 const sp<ISurfaceTexture>& surfaceTexture); 300 virtual status_t prepareAsync(); 301 virtual status_t start(); 302 virtual status_t stop(); 303 virtual status_t pause(); 304 virtual status_t isPlaying(bool* state); 305 virtual status_t seekTo(int msec); 306 virtual status_t getCurrentPosition(int* msec); 307 virtual status_t getDuration(int* msec); 308 virtual status_t reset(); 309 virtual status_t setAudioStreamType(audio_stream_type_t type); 310 virtual status_t setLooping(int loop); 311 virtual status_t setVolume(float leftVolume, float rightVolume); 312 virtual status_t invoke(const Parcel& request, Parcel *reply); 313 virtual status_t setMetadataFilter(const Parcel& filter); 314 virtual status_t getMetadata(bool update_only, 315 bool apply_filter, 316 Parcel *reply); 317 virtual status_t setAuxEffectSendLevel(float level); 318 virtual status_t attachAuxEffect(int effectId); 319 virtual status_t setParameter(int key, const Parcel &request); 320 virtual status_t getParameter(int key, Parcel *reply); 321 virtual status_t setRetransmitEndpoint(const struct sockaddr_in* endpoint); 322 virtual status_t setNextPlayer(const sp<IMediaPlayer>& player); 323 324 sp<MediaPlayerBase> createPlayer(player_type playerType); 325 326 virtual status_t setDataSource( 327 const char *url, 328 const KeyedVector<String8, String8> *headers); 329 330 virtual status_t setDataSource(int fd, int64_t offset, int64_t length); 331 332 virtual status_t setDataSource(const sp<IStreamSource> &source); 333 334 sp<MediaPlayerBase> setDataSource_pre(player_type playerType); 335 void setDataSource_post(const sp<MediaPlayerBase>& p, 336 status_t status); 337 338 player_type getPlayerType(int fd, int64_t offset, int64_t length); 339 player_type getPlayerType(const char* url); 340 player_type getPlayerType(const sp<IStreamSource> &source); 341 342 static void notify(void* cookie, int msg, 343 int ext1, int ext2, const Parcel *obj); 344 345 pid_t pid() const { return mPid; } 346 virtual status_t dump(int fd, const Vector<String16>& args) const; 347 348 int getAudioSessionId() { return mAudioSessionId; } 349 350 private: 351 friend class MediaPlayerService; 352 Client( const sp<MediaPlayerService>& service, 353 pid_t pid, 354 int32_t connId, 355 const sp<IMediaPlayerClient>& client, 356 int audioSessionId, 357 uid_t uid); 358 Client(); 359 virtual ~Client(); 360 361 void deletePlayer(); 362 363 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 364 365 366 367 // @param type Of the metadata to be tested. 368 // @return true if the metadata should be dropped according to 369 // the filters. 370 bool shouldDropMetadata(media::Metadata::Type type) const; 371 372 // Add a new element to the set of metadata updated. Noop if 373 // the element exists already. 374 // @param type Of the metadata to be recorded. 375 void addNewMetadataUpdate(media::Metadata::Type type); 376 377 // Disconnect from the currently connected ANativeWindow. 378 void disconnectNativeWindow(); 379 380 mutable Mutex mLock; 381 sp<MediaPlayerBase> mPlayer; 382 sp<MediaPlayerService> mService; 383 sp<IMediaPlayerClient> mClient; 384 sp<AudioOutput> mAudioOutput; 385 pid_t mPid; 386 status_t mStatus; 387 bool mLoop; 388 int32_t mConnId; 389 int mAudioSessionId; 390 uid_t mUID; 391 sp<ANativeWindow> mConnectedWindow; 392 sp<IBinder> mConnectedWindowBinder; 393 struct sockaddr_in mRetransmitEndpoint; 394 bool mRetransmitEndpointValid; 395 sp<Client> mNextClient; 396 397 // Metadata filters. 398 media::Metadata::Filter mMetadataAllow; // protected by mLock 399 media::Metadata::Filter mMetadataDrop; // protected by mLock 400 401 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 402 // notification we try to update mMetadataUpdated which is a 403 // set: no duplicate. 404 // getMetadata clears this set. 405 media::Metadata::Filter mMetadataUpdated; // protected by mLock 406 407#if CALLBACK_ANTAGONIZER 408 Antagonizer* mAntagonizer; 409#endif 410 }; // Client 411 412// ---------------------------------------------------------------------------- 413 414 MediaPlayerService(); 415 virtual ~MediaPlayerService(); 416 417 mutable Mutex mLock; 418 SortedVector< wp<Client> > mClients; 419 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 420 int32_t mNextConnId; 421 sp<IOMX> mOMX; 422}; 423 424// ---------------------------------------------------------------------------- 425 426}; // namespace android 427 428#endif // ANDROID_MEDIAPLAYERSERVICE_H 429