MediaPlayerService.h revision a3f1fa308728976fc9ca1b4f37d26e633b32b9ac
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 35namespace android { 36 37class AudioTrack; 38class IMediaRecorder; 39class IMediaMetadataRetriever; 40class IOMX; 41class MediaRecorderClient; 42 43#define CALLBACK_ANTAGONIZER 0 44#if CALLBACK_ANTAGONIZER 45class Antagonizer { 46public: 47 Antagonizer(notify_callback_f cb, void* client); 48 void start() { mActive = true; } 49 void stop() { mActive = false; } 50 void kill(); 51private: 52 static const int interval; 53 Antagonizer(); 54 static int callbackThread(void* cookie); 55 Mutex mLock; 56 Condition mCondition; 57 bool mExit; 58 bool mActive; 59 void* mClient; 60 notify_callback_f mCb; 61}; 62#endif 63 64class MediaPlayerService : public BnMediaPlayerService 65{ 66 class Client; 67 68 class AudioOutput : public MediaPlayerBase::AudioSink 69 { 70 public: 71 AudioOutput(int sessionId); 72 virtual ~AudioOutput(); 73 74 virtual bool ready() const { return mTrack != NULL; } 75 virtual bool realtime() const { return true; } 76 virtual ssize_t bufferSize() const; 77 virtual ssize_t frameCount() const; 78 virtual ssize_t channelCount() const; 79 virtual ssize_t frameSize() const; 80 virtual uint32_t latency() const; 81 virtual float msecsPerFrame() const; 82 virtual status_t getPosition(uint32_t *position); 83 virtual int getSessionId(); 84 85 virtual status_t open( 86 uint32_t sampleRate, int channelCount, 87 audio_format_t format, int bufferCount, 88 AudioCallback cb, void *cookie); 89 90 virtual void start(); 91 virtual ssize_t write(const void* buffer, size_t size); 92 virtual void stop(); 93 virtual void flush(); 94 virtual void pause(); 95 virtual void close(); 96 void setAudioStreamType(audio_stream_type_t streamType) { mStreamType = streamType; } 97 void setVolume(float left, float right); 98 status_t setAuxEffectSendLevel(float level); 99 status_t attachAuxEffect(int effectId); 100 virtual status_t dump(int fd, const Vector<String16>& args) const; 101 102 static bool isOnEmulator(); 103 static int getMinBufferCount(); 104 private: 105 static void setMinBufferCount(); 106 static void CallbackWrapper( 107 int event, void *me, void *info); 108 109 AudioTrack* mTrack; 110 AudioCallback mCallback; 111 void * mCallbackCookie; 112 audio_stream_type_t mStreamType; 113 float mLeftVolume; 114 float mRightVolume; 115 float mMsecsPerFrame; 116 uint32_t mLatency; 117 int mSessionId; 118 float mSendLevel; 119 int mAuxEffectId; 120 static bool mIsOnEmulator; 121 static int mMinBufferCount; // 12 for emulator; otherwise 4 122 123 }; 124 125 class AudioCache : public MediaPlayerBase::AudioSink 126 { 127 public: 128 AudioCache(const char* name); 129 virtual ~AudioCache() {} 130 131 virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); } 132 virtual bool realtime() const { return false; } 133 virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; } 134 virtual ssize_t frameCount() const { return mFrameCount; } 135 virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; } 136 virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AUDIO_FORMAT_PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); } 137 virtual uint32_t latency() const; 138 virtual float msecsPerFrame() const; 139 virtual status_t getPosition(uint32_t *position); 140 virtual int getSessionId(); 141 142 virtual status_t open( 143 uint32_t sampleRate, int channelCount, audio_format_t format, 144 int bufferCount = 1, 145 AudioCallback cb = NULL, void *cookie = NULL); 146 147 virtual void start(); 148 virtual ssize_t write(const void* buffer, size_t size); 149 virtual void stop(); 150 virtual void flush() {} 151 virtual void pause() {} 152 virtual void close() {} 153 void setAudioStreamType(audio_stream_type_t streamType) {} 154 void setVolume(float left, float right) {} 155 uint32_t sampleRate() const { return mSampleRate; } 156 audio_format_t format() const { return mFormat; } 157 size_t size() const { return mSize; } 158 status_t wait(); 159 160 sp<IMemoryHeap> getHeap() const { return mHeap; } 161 162 static void notify(void* cookie, int msg, 163 int ext1, int ext2, const Parcel *obj); 164 virtual status_t dump(int fd, const Vector<String16>& args) const; 165 166 private: 167 AudioCache(); 168 169 Mutex mLock; 170 Condition mSignal; 171 sp<MemoryHeapBase> mHeap; 172 float mMsecsPerFrame; 173 uint16_t mChannelCount; 174 audio_format_t mFormat; 175 ssize_t mFrameCount; 176 uint32_t mSampleRate; 177 uint32_t mSize; 178 int mError; 179 bool mCommandComplete; 180 181 sp<Thread> mCallbackThread; 182 }; 183 184public: 185 static void instantiate(); 186 187 // IMediaPlayerService interface 188 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid); 189 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 190 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid); 191 192 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int audioSessionId); 193 194 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat); 195 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat); 196 virtual sp<IOMX> getOMX(); 197 198 virtual status_t dump(int fd, const Vector<String16>& args); 199 200 void removeClient(wp<Client> client); 201 202 // For battery usage tracking purpose 203 struct BatteryUsageInfo { 204 // how many streams are being played by one UID 205 int refCount; 206 // a temp variable to store the duration(ms) of audio codecs 207 // when we start a audio codec, we minus the system time from audioLastTime 208 // when we pause it, we add the system time back to the audioLastTime 209 // so after the pause, audioLastTime = pause time - start time 210 // if multiple audio streams are played (or recorded), then audioLastTime 211 // = the total playing time of all the streams 212 int32_t audioLastTime; 213 // when all the audio streams are being paused, we assign audioLastTime to 214 // this variable, so this value could be provided to the battery app 215 // in the next pullBatteryData call 216 int32_t audioTotalTime; 217 218 int32_t videoLastTime; 219 int32_t videoTotalTime; 220 }; 221 KeyedVector<int, BatteryUsageInfo> mBatteryData; 222 223 enum { 224 SPEAKER, 225 OTHER_AUDIO_DEVICE, 226 SPEAKER_AND_OTHER, 227 NUM_AUDIO_DEVICES 228 }; 229 230 struct BatteryAudioFlingerUsageInfo { 231 int refCount; // how many audio streams are being played 232 int deviceOn[NUM_AUDIO_DEVICES]; // whether the device is currently used 233 int32_t lastTime[NUM_AUDIO_DEVICES]; // in ms 234 // totalTime[]: total time of audio output devices usage 235 int32_t totalTime[NUM_AUDIO_DEVICES]; // in ms 236 }; 237 238 // This varialble is used to record the usage of audio output device 239 // for battery app 240 BatteryAudioFlingerUsageInfo mBatteryAudio; 241 242 // Collect info of the codec usage from media player and media recorder 243 virtual void addBatteryData(uint32_t params); 244 // API for the Battery app to pull the data of codecs usage 245 virtual status_t pullBatteryData(Parcel* reply); 246private: 247 248 class Client : public BnMediaPlayer { 249 250 // IMediaPlayer interface 251 virtual void disconnect(); 252 virtual status_t setVideoSurfaceTexture( 253 const sp<ISurfaceTexture>& surfaceTexture); 254 virtual status_t prepareAsync(); 255 virtual status_t start(); 256 virtual status_t stop(); 257 virtual status_t pause(); 258 virtual status_t isPlaying(bool* state); 259 virtual status_t seekTo(int msec); 260 virtual status_t getCurrentPosition(int* msec); 261 virtual status_t getDuration(int* msec); 262 virtual status_t reset(); 263 virtual status_t setAudioStreamType(audio_stream_type_t type); 264 virtual status_t setLooping(int loop); 265 virtual status_t setVolume(float leftVolume, float rightVolume); 266 virtual status_t invoke(const Parcel& request, Parcel *reply); 267 virtual status_t setMetadataFilter(const Parcel& filter); 268 virtual status_t getMetadata(bool update_only, 269 bool apply_filter, 270 Parcel *reply); 271 virtual status_t setAuxEffectSendLevel(float level); 272 virtual status_t attachAuxEffect(int effectId); 273 virtual status_t setParameter(int key, const Parcel &request); 274 virtual status_t getParameter(int key, Parcel *reply); 275 276 sp<MediaPlayerBase> createPlayer(player_type playerType); 277 278 virtual status_t setDataSource( 279 const char *url, 280 const KeyedVector<String8, String8> *headers); 281 282 virtual status_t setDataSource(int fd, int64_t offset, int64_t length); 283 284 virtual status_t setDataSource(const sp<IStreamSource> &source); 285 286 static void notify(void* cookie, int msg, 287 int ext1, int ext2, const Parcel *obj); 288 289 pid_t pid() const { return mPid; } 290 virtual status_t dump(int fd, const Vector<String16>& args) const; 291 292 int getAudioSessionId() { return mAudioSessionId; } 293 294 private: 295 friend class MediaPlayerService; 296 Client( const sp<MediaPlayerService>& service, 297 pid_t pid, 298 int32_t connId, 299 const sp<IMediaPlayerClient>& client, 300 int audioSessionId, 301 uid_t uid); 302 Client(); 303 virtual ~Client(); 304 305 void deletePlayer(); 306 307 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 308 309 310 311 // @param type Of the metadata to be tested. 312 // @return true if the metadata should be dropped according to 313 // the filters. 314 bool shouldDropMetadata(media::Metadata::Type type) const; 315 316 // Add a new element to the set of metadata updated. Noop if 317 // the element exists already. 318 // @param type Of the metadata to be recorded. 319 void addNewMetadataUpdate(media::Metadata::Type type); 320 321 // Disconnect from the currently connected ANativeWindow. 322 void disconnectNativeWindow(); 323 324 mutable Mutex mLock; 325 sp<MediaPlayerBase> mPlayer; 326 sp<MediaPlayerService> mService; 327 sp<IMediaPlayerClient> mClient; 328 sp<AudioOutput> mAudioOutput; 329 pid_t mPid; 330 status_t mStatus; 331 bool mLoop; 332 int32_t mConnId; 333 int mAudioSessionId; 334 uid_t mUID; 335 sp<ANativeWindow> mConnectedWindow; 336 sp<IBinder> mConnectedWindowBinder; 337 338 // Metadata filters. 339 media::Metadata::Filter mMetadataAllow; // protected by mLock 340 media::Metadata::Filter mMetadataDrop; // protected by mLock 341 342 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 343 // notification we try to update mMetadataUpdated which is a 344 // set: no duplicate. 345 // getMetadata clears this set. 346 media::Metadata::Filter mMetadataUpdated; // protected by mLock 347 348#if CALLBACK_ANTAGONIZER 349 Antagonizer* mAntagonizer; 350#endif 351 }; 352 353// ---------------------------------------------------------------------------- 354 355 MediaPlayerService(); 356 virtual ~MediaPlayerService(); 357 358 mutable Mutex mLock; 359 SortedVector< wp<Client> > mClients; 360 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 361 int32_t mNextConnId; 362 sp<IOMX> mOMX; 363}; 364 365// ---------------------------------------------------------------------------- 366 367}; // namespace android 368 369#endif // ANDROID_MEDIAPLAYERSERVICE_H 370