MediaPlayerService.h revision 6556e5bb99bda64f3ab92e8b540fccdd59e9ed8d
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, audio_channel_mask_t channelMask, 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 int mSessionId; 122 float mSendLevel; 123 int mAuxEffectId; 124 static bool mIsOnEmulator; 125 static int mMinBufferCount; // 12 for emulator; otherwise 4 126 127 }; 128 129 class AudioCache : public MediaPlayerBase::AudioSink 130 { 131 public: 132 AudioCache(const char* name); 133 virtual ~AudioCache() {} 134 135 virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); } 136 virtual bool realtime() const { return false; } 137 virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; } 138 virtual ssize_t frameCount() const { return mFrameCount; } 139 virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; } 140 virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AUDIO_FORMAT_PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); } 141 virtual uint32_t latency() const; 142 virtual float msecsPerFrame() const; 143 virtual status_t getPosition(uint32_t *position); 144 virtual int getSessionId(); 145 146 virtual status_t open( 147 uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask, 148 audio_format_t format, int bufferCount = 1, 149 AudioCallback cb = NULL, void *cookie = NULL); 150 151 virtual void start(); 152 virtual ssize_t write(const void* buffer, size_t size); 153 virtual void stop(); 154 virtual void flush() {} 155 virtual void pause() {} 156 virtual void close() {} 157 void setAudioStreamType(audio_stream_type_t streamType) {} 158 void setVolume(float left, float right) {} 159 virtual status_t setPlaybackRatePermille(int32_t ratePermille) { return INVALID_OPERATION; } 160 uint32_t sampleRate() const { return mSampleRate; } 161 audio_format_t format() const { return mFormat; } 162 size_t size() const { return mSize; } 163 status_t wait(); 164 165 sp<IMemoryHeap> getHeap() const { return mHeap; } 166 167 static void notify(void* cookie, int msg, 168 int ext1, int ext2, const Parcel *obj); 169 virtual status_t dump(int fd, const Vector<String16>& args) const; 170 171 private: 172 AudioCache(); 173 174 Mutex mLock; 175 Condition mSignal; 176 sp<MemoryHeapBase> mHeap; 177 float mMsecsPerFrame; 178 uint16_t mChannelCount; 179 audio_format_t mFormat; 180 ssize_t mFrameCount; 181 uint32_t mSampleRate; 182 uint32_t mSize; 183 int mError; 184 bool mCommandComplete; 185 186 sp<Thread> mCallbackThread; 187 }; 188 189public: 190 static void instantiate(); 191 192 // IMediaPlayerService interface 193 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid); 194 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 195 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid); 196 197 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int audioSessionId); 198 199 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat); 200 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat); 201 virtual sp<IOMX> getOMX(); 202 203 virtual status_t dump(int fd, const Vector<String16>& args); 204 205 void removeClient(wp<Client> client); 206 207 // For battery usage tracking purpose 208 struct BatteryUsageInfo { 209 // how many streams are being played by one UID 210 int refCount; 211 // a temp variable to store the duration(ms) of audio codecs 212 // when we start a audio codec, we minus the system time from audioLastTime 213 // when we pause it, we add the system time back to the audioLastTime 214 // so after the pause, audioLastTime = pause time - start time 215 // if multiple audio streams are played (or recorded), then audioLastTime 216 // = the total playing time of all the streams 217 int32_t audioLastTime; 218 // when all the audio streams are being paused, we assign audioLastTime to 219 // this variable, so this value could be provided to the battery app 220 // in the next pullBatteryData call 221 int32_t audioTotalTime; 222 223 int32_t videoLastTime; 224 int32_t videoTotalTime; 225 }; 226 KeyedVector<int, BatteryUsageInfo> mBatteryData; 227 228 enum { 229 SPEAKER, 230 OTHER_AUDIO_DEVICE, 231 SPEAKER_AND_OTHER, 232 NUM_AUDIO_DEVICES 233 }; 234 235 struct BatteryAudioFlingerUsageInfo { 236 int refCount; // how many audio streams are being played 237 int deviceOn[NUM_AUDIO_DEVICES]; // whether the device is currently used 238 int32_t lastTime[NUM_AUDIO_DEVICES]; // in ms 239 // totalTime[]: total time of audio output devices usage 240 int32_t totalTime[NUM_AUDIO_DEVICES]; // in ms 241 }; 242 243 // This varialble is used to record the usage of audio output device 244 // for battery app 245 BatteryAudioFlingerUsageInfo mBatteryAudio; 246 247 // Collect info of the codec usage from media player and media recorder 248 virtual void addBatteryData(uint32_t params); 249 // API for the Battery app to pull the data of codecs usage 250 virtual status_t pullBatteryData(Parcel* reply); 251private: 252 253 class Client : public BnMediaPlayer { 254 255 // IMediaPlayer interface 256 virtual void disconnect(); 257 virtual status_t setVideoSurfaceTexture( 258 const sp<ISurfaceTexture>& surfaceTexture); 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); 281 282 sp<MediaPlayerBase> createPlayer(player_type playerType); 283 284 virtual status_t setDataSource( 285 const char *url, 286 const KeyedVector<String8, String8> *headers); 287 288 virtual status_t setDataSource(int fd, int64_t offset, int64_t length); 289 290 virtual status_t setDataSource(const sp<IStreamSource> &source); 291 292 sp<MediaPlayerBase> setDataSource_pre(player_type playerType); 293 void setDataSource_post(const sp<MediaPlayerBase>& p, 294 status_t status); 295 296 player_type getPlayerType(int fd, int64_t offset, int64_t length); 297 player_type getPlayerType(const char* url); 298 player_type getPlayerType(const sp<IStreamSource> &source); 299 300 static void notify(void* cookie, int msg, 301 int ext1, int ext2, const Parcel *obj); 302 303 pid_t pid() const { return mPid; } 304 virtual status_t dump(int fd, const Vector<String16>& args) const; 305 306 int getAudioSessionId() { return mAudioSessionId; } 307 308 private: 309 friend class MediaPlayerService; 310 Client( const sp<MediaPlayerService>& service, 311 pid_t pid, 312 int32_t connId, 313 const sp<IMediaPlayerClient>& client, 314 int audioSessionId, 315 uid_t uid); 316 Client(); 317 virtual ~Client(); 318 319 void deletePlayer(); 320 321 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 322 323 324 325 // @param type Of the metadata to be tested. 326 // @return true if the metadata should be dropped according to 327 // the filters. 328 bool shouldDropMetadata(media::Metadata::Type type) const; 329 330 // Add a new element to the set of metadata updated. Noop if 331 // the element exists already. 332 // @param type Of the metadata to be recorded. 333 void addNewMetadataUpdate(media::Metadata::Type type); 334 335 // Disconnect from the currently connected ANativeWindow. 336 void disconnectNativeWindow(); 337 338 mutable Mutex mLock; 339 sp<MediaPlayerBase> mPlayer; 340 sp<MediaPlayerService> mService; 341 sp<IMediaPlayerClient> mClient; 342 sp<AudioOutput> mAudioOutput; 343 pid_t mPid; 344 status_t mStatus; 345 bool mLoop; 346 int32_t mConnId; 347 int mAudioSessionId; 348 uid_t mUID; 349 sp<ANativeWindow> mConnectedWindow; 350 sp<IBinder> mConnectedWindowBinder; 351 struct sockaddr_in mRetransmitEndpoint; 352 bool mRetransmitEndpointValid; 353 354 // Metadata filters. 355 media::Metadata::Filter mMetadataAllow; // protected by mLock 356 media::Metadata::Filter mMetadataDrop; // protected by mLock 357 358 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 359 // notification we try to update mMetadataUpdated which is a 360 // set: no duplicate. 361 // getMetadata clears this set. 362 media::Metadata::Filter mMetadataUpdated; // protected by mLock 363 364#if CALLBACK_ANTAGONIZER 365 Antagonizer* mAntagonizer; 366#endif 367 }; 368 369// ---------------------------------------------------------------------------- 370 371 MediaPlayerService(); 372 virtual ~MediaPlayerService(); 373 374 mutable Mutex mLock; 375 SortedVector< wp<Client> > mClients; 376 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 377 int32_t mNextConnId; 378 sp<IOMX> mOMX; 379}; 380 381// ---------------------------------------------------------------------------- 382 383}; // namespace android 384 385#endif // ANDROID_MEDIAPLAYERSERVICE_H 386