MediaPlayerService.h revision b7848f1c442bc8c71020957948d1b003a62a25b7
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 35namespace android { 36 37class AudioTrack; 38class IMediaRecorder; 39class IMediaMetadataRetriever; 40class IOMX; 41class IRemoteDisplay; 42class IRemoteDisplayClient; 43class MediaRecorderClient; 44 45#define CALLBACK_ANTAGONIZER 0 46#if CALLBACK_ANTAGONIZER 47class Antagonizer { 48public: 49 Antagonizer(notify_callback_f cb, void* client); 50 void start() { mActive = true; } 51 void stop() { mActive = false; } 52 void kill(); 53private: 54 static const int interval; 55 Antagonizer(); 56 static int callbackThread(void* cookie); 57 Mutex mLock; 58 Condition mCondition; 59 bool mExit; 60 bool mActive; 61 void* mClient; 62 notify_callback_f mCb; 63}; 64#endif 65 66class MediaPlayerService : public BnMediaPlayerService 67{ 68 class Client; 69 70 class AudioOutput : public MediaPlayerBase::AudioSink 71 { 72 class CallbackData; 73 74 public: 75 AudioOutput(int sessionId, int uid, int pid, 76 const audio_attributes_t * attr); 77 virtual ~AudioOutput(); 78 79 virtual bool ready() const { return mTrack != 0; } 80 virtual ssize_t bufferSize() const; 81 virtual ssize_t frameCount() const; 82 virtual ssize_t channelCount() const; 83 virtual ssize_t frameSize() const; 84 virtual uint32_t latency() const; 85 virtual float msecsPerFrame() const; 86 virtual status_t getPosition(uint32_t *position) const; 87 virtual status_t getTimestamp(AudioTimestamp &ts) const; 88 virtual status_t getFramesWritten(uint32_t *frameswritten) const; 89 virtual int getSessionId() const; 90 virtual uint32_t getSampleRate() const; 91 92 virtual status_t open( 93 uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask, 94 audio_format_t format, int bufferCount, 95 AudioCallback cb, void *cookie, 96 audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 97 const audio_offload_info_t *offloadInfo = NULL); 98 99 virtual status_t start(); 100 virtual ssize_t write(const void* buffer, size_t size); 101 virtual void stop(); 102 virtual void flush(); 103 virtual void pause(); 104 virtual void close(); 105 void setAudioStreamType(audio_stream_type_t streamType) { 106 mStreamType = streamType; } 107 virtual audio_stream_type_t getAudioStreamType() const { return mStreamType; } 108 void setAudioAttributes(const audio_attributes_t * attributes); 109 110 void setVolume(float left, float right); 111 virtual status_t setPlaybackRatePermille(int32_t ratePermille); 112 status_t setAuxEffectSendLevel(float level); 113 status_t attachAuxEffect(int effectId); 114 virtual status_t dump(int fd, const Vector<String16>& args) const; 115 116 static bool isOnEmulator(); 117 static int getMinBufferCount(); 118 void setNextOutput(const sp<AudioOutput>& nextOutput); 119 void switchToNextOutput(); 120 virtual bool needsTrailingPadding() { return mNextOutput == NULL; } 121 virtual status_t setParameters(const String8& keyValuePairs); 122 virtual String8 getParameters(const String8& keys); 123 124 private: 125 static void setMinBufferCount(); 126 static void CallbackWrapper( 127 int event, void *me, void *info); 128 void deleteRecycledTrack(); 129 130 sp<AudioTrack> mTrack; 131 sp<AudioTrack> mRecycledTrack; 132 sp<AudioOutput> mNextOutput; 133 AudioCallback mCallback; 134 void * mCallbackCookie; 135 CallbackData * mCallbackData; 136 uint64_t mBytesWritten; 137 audio_stream_type_t mStreamType; 138 const audio_attributes_t *mAttributes; 139 float mLeftVolume; 140 float mRightVolume; 141 int32_t mPlaybackRatePermille; 142 uint32_t mSampleRateHz; // sample rate of the content, as set in open() 143 float mMsecsPerFrame; 144 int mSessionId; 145 int mUid; 146 int mPid; 147 float mSendLevel; 148 int mAuxEffectId; 149 static bool mIsOnEmulator; 150 static int mMinBufferCount; // 12 for emulator; otherwise 4 151 audio_output_flags_t mFlags; 152 153 // CallbackData is what is passed to the AudioTrack as the "user" data. 154 // We need to be able to target this to a different Output on the fly, 155 // so we can't use the Output itself for this. 156 class CallbackData { 157 public: 158 CallbackData(AudioOutput *cookie) { 159 mData = cookie; 160 mSwitching = false; 161 } 162 AudioOutput * getOutput() { return mData;} 163 void setOutput(AudioOutput* newcookie) { mData = newcookie; } 164 // lock/unlock are used by the callback before accessing the payload of this object 165 void lock() { mLock.lock(); } 166 void unlock() { mLock.unlock(); } 167 // beginTrackSwitch/endTrackSwitch are used when this object is being handed over 168 // to the next sink. 169 void beginTrackSwitch() { mLock.lock(); mSwitching = true; } 170 void endTrackSwitch() { 171 if (mSwitching) { 172 mLock.unlock(); 173 } 174 mSwitching = false; 175 } 176 private: 177 AudioOutput * mData; 178 mutable Mutex mLock; 179 bool mSwitching; 180 DISALLOW_EVIL_CONSTRUCTORS(CallbackData); 181 }; 182 183 }; // AudioOutput 184 185 186public: 187 static void instantiate(); 188 189 // IMediaPlayerService interface 190 virtual sp<IMediaRecorder> createMediaRecorder(); 191 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 192 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(); 193 194 virtual sp<IMediaPlayer> create(const sp<IMediaPlayerClient>& client, int audioSessionId); 195 196 virtual sp<IMediaCodecList> getCodecList() const; 197 virtual sp<IOMX> getOMX(); 198 virtual sp<ICrypto> makeCrypto(); 199 virtual sp<IDrm> makeDrm(); 200 virtual sp<IHDCP> makeHDCP(bool createEncryptionModule); 201 202 virtual sp<IRemoteDisplay> listenForRemoteDisplay(const sp<IRemoteDisplayClient>& client, 203 const String8& iface); 204 virtual status_t dump(int fd, const Vector<String16>& args); 205 206 void removeClient(wp<Client> client); 207 208 // For battery usage tracking purpose 209 struct BatteryUsageInfo { 210 // how many streams are being played by one UID 211 int refCount; 212 // a temp variable to store the duration(ms) of audio codecs 213 // when we start a audio codec, we minus the system time from audioLastTime 214 // when we pause it, we add the system time back to the audioLastTime 215 // so after the pause, audioLastTime = pause time - start time 216 // if multiple audio streams are played (or recorded), then audioLastTime 217 // = the total playing time of all the streams 218 int32_t audioLastTime; 219 // when all the audio streams are being paused, we assign audioLastTime to 220 // this variable, so this value could be provided to the battery app 221 // in the next pullBatteryData call 222 int32_t audioTotalTime; 223 224 int32_t videoLastTime; 225 int32_t videoTotalTime; 226 }; 227 KeyedVector<int, BatteryUsageInfo> mBatteryData; 228 229 enum { 230 SPEAKER, 231 OTHER_AUDIO_DEVICE, 232 SPEAKER_AND_OTHER, 233 NUM_AUDIO_DEVICES 234 }; 235 236 struct BatteryAudioFlingerUsageInfo { 237 int refCount; // how many audio streams are being played 238 int deviceOn[NUM_AUDIO_DEVICES]; // whether the device is currently used 239 int32_t lastTime[NUM_AUDIO_DEVICES]; // in ms 240 // totalTime[]: total time of audio output devices usage 241 int32_t totalTime[NUM_AUDIO_DEVICES]; // in ms 242 }; 243 244 // This varialble is used to record the usage of audio output device 245 // for battery app 246 BatteryAudioFlingerUsageInfo mBatteryAudio; 247 248 // Collect info of the codec usage from media player and media recorder 249 virtual void addBatteryData(uint32_t params); 250 // API for the Battery app to pull the data of codecs usage 251 virtual status_t pullBatteryData(Parcel* reply); 252private: 253 254 class Client : public BnMediaPlayer { 255 // IMediaPlayer interface 256 virtual void disconnect(); 257 virtual status_t setVideoSurfaceTexture( 258 const sp<IGraphicBufferProducer>& bufferProducer); 259 virtual status_t prepareAsync(); 260 virtual status_t start(); 261 virtual status_t stop(); 262 virtual status_t pause(); 263 virtual status_t isPlaying(bool* state); 264 virtual status_t seekTo(int msec); 265 virtual status_t getCurrentPosition(int* msec); 266 virtual status_t getDuration(int* msec); 267 virtual status_t reset(); 268 virtual status_t setAudioStreamType(audio_stream_type_t type); 269 virtual status_t setLooping(int loop); 270 virtual status_t setVolume(float leftVolume, float rightVolume); 271 virtual status_t invoke(const Parcel& request, Parcel *reply); 272 virtual status_t setMetadataFilter(const Parcel& filter); 273 virtual status_t getMetadata(bool update_only, 274 bool apply_filter, 275 Parcel *reply); 276 virtual status_t setAuxEffectSendLevel(float level); 277 virtual status_t attachAuxEffect(int effectId); 278 virtual status_t setParameter(int key, const Parcel &request); 279 virtual status_t getParameter(int key, Parcel *reply); 280 virtual status_t setRetransmitEndpoint(const struct sockaddr_in* endpoint); 281 virtual status_t getRetransmitEndpoint(struct sockaddr_in* endpoint); 282 virtual status_t setNextPlayer(const sp<IMediaPlayer>& player); 283 284 sp<MediaPlayerBase> createPlayer(player_type playerType); 285 286 virtual status_t setDataSource( 287 const sp<IMediaHTTPService> &httpService, 288 const char *url, 289 const KeyedVector<String8, String8> *headers); 290 291 virtual status_t setDataSource(int fd, int64_t offset, int64_t length); 292 293 virtual status_t setDataSource(const sp<IStreamSource> &source); 294 295 sp<MediaPlayerBase> setDataSource_pre(player_type playerType); 296 void setDataSource_post(const sp<MediaPlayerBase>& p, 297 status_t status); 298 299 static void notify(void* cookie, int msg, 300 int ext1, int ext2, const Parcel *obj); 301 302 pid_t pid() const { return mPid; } 303 virtual status_t dump(int fd, const Vector<String16>& args) const; 304 305 int getAudioSessionId() { return mAudioSessionId; } 306 307 private: 308 friend class MediaPlayerService; 309 Client( const sp<MediaPlayerService>& service, 310 pid_t pid, 311 int32_t connId, 312 const sp<IMediaPlayerClient>& client, 313 int audioSessionId, 314 uid_t uid); 315 Client(); 316 virtual ~Client(); 317 318 void deletePlayer(); 319 320 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 321 322 323 324 // @param type Of the metadata to be tested. 325 // @return true if the metadata should be dropped according to 326 // the filters. 327 bool shouldDropMetadata(media::Metadata::Type type) const; 328 329 // Add a new element to the set of metadata updated. Noop if 330 // the element exists already. 331 // @param type Of the metadata to be recorded. 332 void addNewMetadataUpdate(media::Metadata::Type type); 333 334 // Disconnect from the currently connected ANativeWindow. 335 void disconnectNativeWindow(); 336 337 status_t setAudioAttributes_l(const Parcel &request); 338 339 mutable Mutex mLock; 340 sp<MediaPlayerBase> mPlayer; 341 sp<MediaPlayerService> mService; 342 sp<IMediaPlayerClient> mClient; 343 sp<AudioOutput> mAudioOutput; 344 pid_t mPid; 345 status_t mStatus; 346 bool mLoop; 347 int32_t mConnId; 348 int mAudioSessionId; 349 audio_attributes_t * mAudioAttributes; 350 uid_t mUID; 351 sp<ANativeWindow> mConnectedWindow; 352 sp<IBinder> mConnectedWindowBinder; 353 struct sockaddr_in mRetransmitEndpoint; 354 bool mRetransmitEndpointValid; 355 sp<Client> mNextClient; 356 357 // Metadata filters. 358 media::Metadata::Filter mMetadataAllow; // protected by mLock 359 media::Metadata::Filter mMetadataDrop; // protected by mLock 360 361 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 362 // notification we try to update mMetadataUpdated which is a 363 // set: no duplicate. 364 // getMetadata clears this set. 365 media::Metadata::Filter mMetadataUpdated; // protected by mLock 366 367#if CALLBACK_ANTAGONIZER 368 Antagonizer* mAntagonizer; 369#endif 370 }; // Client 371 372// ---------------------------------------------------------------------------- 373 374 MediaPlayerService(); 375 virtual ~MediaPlayerService(); 376 377 mutable Mutex mLock; 378 SortedVector< wp<Client> > mClients; 379 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 380 int32_t mNextConnId; 381 sp<IOMX> mOMX; 382 sp<ICrypto> mCrypto; 383}; 384 385// ---------------------------------------------------------------------------- 386 387}; // namespace android 388 389#endif // ANDROID_MEDIAPLAYERSERVICE_H 390