MediaPlayerService.h revision c795b64060c3af9d7961fc1371e4ccfa8ee3e450
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 35#include <system/audio.h> 36 37namespace android { 38 39class AudioTrack; 40class IMediaRecorder; 41class IMediaMetadataRetriever; 42class IOMX; 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 public: 73 AudioOutput(int sessionId); 74 virtual ~AudioOutput(); 75 76 virtual bool ready() const { return mTrack != NULL; } 77 virtual bool realtime() const { return true; } 78 virtual ssize_t bufferSize() const; 79 virtual ssize_t frameCount() const; 80 virtual ssize_t channelCount() const; 81 virtual ssize_t frameSize() const; 82 virtual uint32_t latency() const; 83 virtual float msecsPerFrame() const; 84 virtual status_t getPosition(uint32_t *position); 85 virtual int getSessionId(); 86 87 virtual status_t open( 88 uint32_t sampleRate, int channelCount, 89 audio_format_t format, int bufferCount, 90 AudioCallback cb, void *cookie); 91 92 virtual void start(); 93 virtual ssize_t write(const void* buffer, size_t size); 94 virtual void stop(); 95 virtual void flush(); 96 virtual void pause(); 97 virtual void close(); 98 void setAudioStreamType(audio_stream_type_t streamType) { mStreamType = streamType; } 99 void setVolume(float left, float right); 100 virtual status_t setPlaybackRatePermille(int32_t ratePermille); 101 status_t setAuxEffectSendLevel(float level); 102 status_t attachAuxEffect(int effectId); 103 virtual status_t dump(int fd, const Vector<String16>& args) const; 104 105 static bool isOnEmulator(); 106 static int getMinBufferCount(); 107 private: 108 static void setMinBufferCount(); 109 static void CallbackWrapper( 110 int event, void *me, void *info); 111 112 AudioTrack* mTrack; 113 AudioCallback mCallback; 114 void * mCallbackCookie; 115 audio_stream_type_t mStreamType; 116 float mLeftVolume; 117 float mRightVolume; 118 int32_t mPlaybackRatePermille; 119 uint32_t mSampleRateHz; // sample rate of the content, as set in open() 120 float mMsecsPerFrame; 121 uint32_t mLatency; 122 int mSessionId; 123 float mSendLevel; 124 int mAuxEffectId; 125 static bool mIsOnEmulator; 126 static int mMinBufferCount; // 12 for emulator; otherwise 4 127 128 }; 129 130 class AudioCache : public MediaPlayerBase::AudioSink 131 { 132 public: 133 AudioCache(const char* name); 134 virtual ~AudioCache() {} 135 136 virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); } 137 virtual bool realtime() const { return false; } 138 virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; } 139 virtual ssize_t frameCount() const { return mFrameCount; } 140 virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; } 141 virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AUDIO_FORMAT_PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); } 142 virtual uint32_t latency() const; 143 virtual float msecsPerFrame() const; 144 virtual status_t getPosition(uint32_t *position); 145 virtual int getSessionId(); 146 147 virtual status_t open( 148 uint32_t sampleRate, int channelCount, audio_format_t format, 149 int bufferCount = 1, 150 AudioCallback cb = NULL, void *cookie = NULL); 151 152 virtual void start(); 153 virtual ssize_t write(const void* buffer, size_t size); 154 virtual void stop(); 155 virtual void flush() {} 156 virtual void pause() {} 157 virtual void close() {} 158 void setAudioStreamType(audio_stream_type_t streamType) {} 159 void setVolume(float left, float right) {} 160 virtual status_t setPlaybackRatePermille(int32_t ratePermille) { return INVALID_OPERATION; } 161 uint32_t sampleRate() const { return mSampleRate; } 162 audio_format_t format() const { return mFormat; } 163 size_t size() const { return mSize; } 164 status_t wait(); 165 166 sp<IMemoryHeap> getHeap() const { return mHeap; } 167 168 static void notify(void* cookie, int msg, 169 int ext1, int ext2, const Parcel *obj); 170 virtual status_t dump(int fd, const Vector<String16>& args) const; 171 172 private: 173 AudioCache(); 174 175 Mutex mLock; 176 Condition mSignal; 177 sp<MemoryHeapBase> mHeap; 178 float mMsecsPerFrame; 179 uint16_t mChannelCount; 180 audio_format_t mFormat; 181 ssize_t mFrameCount; 182 uint32_t mSampleRate; 183 uint32_t mSize; 184 int mError; 185 bool mCommandComplete; 186 187 sp<Thread> mCallbackThread; 188 }; 189 190public: 191 static void instantiate(); 192 193 // IMediaPlayerService interface 194 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid); 195 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 196 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid); 197 198 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int audioSessionId); 199 200 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat); 201 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat); 202 virtual sp<IOMX> getOMX(); 203 204 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 { 255 256 // IMediaPlayer interface 257 virtual void disconnect(); 258 virtual status_t setVideoSurfaceTexture( 259 const sp<ISurfaceTexture>& surfaceTexture); 260 virtual status_t prepareAsync(); 261 virtual status_t start(); 262 virtual status_t stop(); 263 virtual status_t pause(); 264 virtual status_t isPlaying(bool* state); 265 virtual status_t seekTo(int msec); 266 virtual status_t getCurrentPosition(int* msec); 267 virtual status_t getDuration(int* msec); 268 virtual status_t reset(); 269 virtual status_t setAudioStreamType(audio_stream_type_t type); 270 virtual status_t setLooping(int loop); 271 virtual status_t setVolume(float leftVolume, float rightVolume); 272 virtual status_t invoke(const Parcel& request, Parcel *reply); 273 virtual status_t setMetadataFilter(const Parcel& filter); 274 virtual status_t getMetadata(bool update_only, 275 bool apply_filter, 276 Parcel *reply); 277 virtual status_t setAuxEffectSendLevel(float level); 278 virtual status_t attachAuxEffect(int effectId); 279 virtual status_t setParameter(int key, const Parcel &request); 280 virtual status_t getParameter(int key, Parcel *reply); 281 virtual status_t setRetransmitEndpoint(const struct sockaddr_in* endpoint); 282 283 sp<MediaPlayerBase> createPlayer(player_type playerType); 284 285 virtual status_t setDataSource( 286 const char *url, 287 const KeyedVector<String8, String8> *headers); 288 289 virtual status_t setDataSource(int fd, int64_t offset, int64_t length); 290 291 virtual status_t setDataSource(const sp<IStreamSource> &source); 292 293 sp<MediaPlayerBase> setDataSource_pre(player_type playerType); 294 void setDataSource_post(const sp<MediaPlayerBase>& p, 295 status_t status); 296 297 player_type getPlayerType(int fd, int64_t offset, int64_t length); 298 player_type getPlayerType(const char* url); 299 player_type getPlayerType(const sp<IStreamSource> &source); 300 301 static void notify(void* cookie, int msg, 302 int ext1, int ext2, const Parcel *obj); 303 304 pid_t pid() const { return mPid; } 305 virtual status_t dump(int fd, const Vector<String16>& args) const; 306 307 int getAudioSessionId() { return mAudioSessionId; } 308 309 private: 310 friend class MediaPlayerService; 311 Client( const sp<MediaPlayerService>& service, 312 pid_t pid, 313 int32_t connId, 314 const sp<IMediaPlayerClient>& client, 315 int audioSessionId, 316 uid_t uid); 317 Client(); 318 virtual ~Client(); 319 320 void deletePlayer(); 321 322 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 323 324 325 326 // @param type Of the metadata to be tested. 327 // @return true if the metadata should be dropped according to 328 // the filters. 329 bool shouldDropMetadata(media::Metadata::Type type) const; 330 331 // Add a new element to the set of metadata updated. Noop if 332 // the element exists already. 333 // @param type Of the metadata to be recorded. 334 void addNewMetadataUpdate(media::Metadata::Type type); 335 336 // Disconnect from the currently connected ANativeWindow. 337 void disconnectNativeWindow(); 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 uid_t mUID; 350 sp<ANativeWindow> mConnectedWindow; 351 sp<IBinder> mConnectedWindowBinder; 352 struct sockaddr_in mRetransmitEndpoint; 353 bool mRetransmitEndpointValid; 354 355 // Metadata filters. 356 media::Metadata::Filter mMetadataAllow; // protected by mLock 357 media::Metadata::Filter mMetadataDrop; // protected by mLock 358 359 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 360 // notification we try to update mMetadataUpdated which is a 361 // set: no duplicate. 362 // getMetadata clears this set. 363 media::Metadata::Filter mMetadataUpdated; // protected by mLock 364 365#if CALLBACK_ANTAGONIZER 366 Antagonizer* mAntagonizer; 367#endif 368 }; 369 370// ---------------------------------------------------------------------------- 371 372 MediaPlayerService(); 373 virtual ~MediaPlayerService(); 374 375 mutable Mutex mLock; 376 SortedVector< wp<Client> > mClients; 377 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 378 int32_t mNextConnId; 379 sp<IOMX> mOMX; 380}; 381 382// ---------------------------------------------------------------------------- 383 384}; // namespace android 385 386#endif // ANDROID_MEDIAPLAYERSERVICE_H 387