MediaPlayerService.h revision b483c4724846c0b8d4e82afcbb7c17f671bae81c
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 33namespace android { 34 35class IMediaRecorder; 36class IMediaMetadataRetriever; 37class IOMX; 38class MediaRecorderClient; 39 40#define CALLBACK_ANTAGONIZER 0 41#if CALLBACK_ANTAGONIZER 42class Antagonizer { 43public: 44 Antagonizer(notify_callback_f cb, void* client); 45 void start() { mActive = true; } 46 void stop() { mActive = false; } 47 void kill(); 48private: 49 static const int interval; 50 Antagonizer(); 51 static int callbackThread(void* cookie); 52 Mutex mLock; 53 Condition mCondition; 54 bool mExit; 55 bool mActive; 56 void* mClient; 57 notify_callback_f mCb; 58}; 59#endif 60 61class MediaPlayerService : public BnMediaPlayerService 62{ 63 class Client; 64 65 class AudioOutput : public MediaPlayerBase::AudioSink 66 { 67 public: 68 AudioOutput(int sessionId); 69 virtual ~AudioOutput(); 70 71 virtual bool ready() const { return mTrack != NULL; } 72 virtual bool realtime() const { return true; } 73 virtual ssize_t bufferSize() const; 74 virtual ssize_t frameCount() const; 75 virtual ssize_t channelCount() const; 76 virtual ssize_t frameSize() const; 77 virtual uint32_t latency() const; 78 virtual float msecsPerFrame() const; 79 virtual status_t getPosition(uint32_t *position); 80 virtual int getSessionId(); 81 82 virtual status_t open( 83 uint32_t sampleRate, int channelCount, 84 int format, int bufferCount, 85 AudioCallback cb, void *cookie); 86 87 virtual void start(); 88 virtual ssize_t write(const void* buffer, size_t size); 89 virtual void stop(); 90 virtual void flush(); 91 virtual void pause(); 92 virtual void close(); 93 void setAudioStreamType(int streamType) { mStreamType = streamType; } 94 void setVolume(float left, float right); 95 status_t setAuxEffectSendLevel(float level); 96 status_t attachAuxEffect(int effectId); 97 virtual status_t dump(int fd, const Vector<String16>& args) const; 98 99 static bool isOnEmulator(); 100 static int getMinBufferCount(); 101 private: 102 static void setMinBufferCount(); 103 static void CallbackWrapper( 104 int event, void *me, void *info); 105 106 AudioTrack* mTrack; 107 AudioCallback mCallback; 108 void * mCallbackCookie; 109 int mStreamType; 110 float mLeftVolume; 111 float mRightVolume; 112 float mMsecsPerFrame; 113 uint32_t mLatency; 114 int mSessionId; 115 float mSendLevel; 116 int mAuxEffectId; 117 static bool mIsOnEmulator; 118 static int mMinBufferCount; // 12 for emulator; otherwise 4 119 120 }; 121 122 class AudioCache : public MediaPlayerBase::AudioSink 123 { 124 public: 125 AudioCache(const char* name); 126 virtual ~AudioCache() {} 127 128 virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); } 129 virtual bool realtime() const { return false; } 130 virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; } 131 virtual ssize_t frameCount() const { return mFrameCount; } 132 virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; } 133 virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AudioSystem::PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); } 134 virtual uint32_t latency() const; 135 virtual float msecsPerFrame() const; 136 virtual status_t getPosition(uint32_t *position); 137 virtual int getSessionId(); 138 139 virtual status_t open( 140 uint32_t sampleRate, int channelCount, int format, 141 int bufferCount = 1, 142 AudioCallback cb = NULL, void *cookie = NULL); 143 144 virtual void start(); 145 virtual ssize_t write(const void* buffer, size_t size); 146 virtual void stop(); 147 virtual void flush() {} 148 virtual void pause() {} 149 virtual void close() {} 150 void setAudioStreamType(int streamType) {} 151 void setVolume(float left, float right) {} 152 uint32_t sampleRate() const { return mSampleRate; } 153 uint32_t format() const { return (uint32_t)mFormat; } 154 size_t size() const { return mSize; } 155 status_t wait(); 156 157 sp<IMemoryHeap> getHeap() const { return mHeap; } 158 159 static void notify(void* cookie, int msg, 160 int ext1, int ext2, const Parcel *obj); 161 virtual status_t dump(int fd, const Vector<String16>& args) const; 162 163 private: 164 AudioCache(); 165 166 Mutex mLock; 167 Condition mSignal; 168 sp<MemoryHeapBase> mHeap; 169 float mMsecsPerFrame; 170 uint16_t mChannelCount; 171 uint16_t mFormat; 172 ssize_t mFrameCount; 173 uint32_t mSampleRate; 174 uint32_t mSize; 175 int mError; 176 bool mCommandComplete; 177 178 sp<Thread> mCallbackThread; 179 }; 180 181public: 182 static void instantiate(); 183 184 // IMediaPlayerService interface 185 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid); 186 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 187 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid); 188 189 // House keeping for media player clients 190 virtual sp<IMediaPlayer> create( 191 pid_t pid, const sp<IMediaPlayerClient>& client, const char* url, 192 const KeyedVector<String8, String8> *headers, int audioSessionId); 193 194 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int fd, int64_t offset, int64_t length, int audioSessionId); 195 196 virtual sp<IMediaPlayer> create( 197 pid_t pid, const sp<IMediaPlayerClient> &client, 198 const sp<IStreamSource> &source, int audioSessionId); 199 200 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat); 201 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* 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 setVideoSurface(const sp<Surface>& surface); 259 virtual status_t setVideoSurfaceTexture( 260 const sp<ISurfaceTexture>& surfaceTexture); 261 virtual status_t prepareAsync(); 262 virtual status_t start(); 263 virtual status_t stop(); 264 virtual status_t pause(); 265 virtual status_t isPlaying(bool* state); 266 virtual status_t seekTo(int msec); 267 virtual status_t getCurrentPosition(int* msec); 268 virtual status_t getDuration(int* msec); 269 virtual status_t reset(); 270 virtual status_t setAudioStreamType(int type); 271 virtual status_t setLooping(int loop); 272 virtual status_t setVolume(float leftVolume, float rightVolume); 273 virtual status_t invoke(const Parcel& request, Parcel *reply); 274 virtual status_t setMetadataFilter(const Parcel& filter); 275 virtual status_t getMetadata(bool update_only, 276 bool apply_filter, 277 Parcel *reply); 278 virtual status_t setAuxEffectSendLevel(float level); 279 virtual status_t attachAuxEffect(int effectId); 280 281 sp<MediaPlayerBase> createPlayer(player_type playerType); 282 283 status_t setDataSource( 284 const char *url, 285 const KeyedVector<String8, String8> *headers); 286 287 status_t setDataSource(int fd, int64_t offset, int64_t length); 288 289 status_t setDataSource(const sp<IStreamSource> &source); 290 291 static void notify(void* cookie, int msg, 292 int ext1, int ext2, const Parcel *obj); 293 294 pid_t pid() const { return mPid; } 295 virtual status_t dump(int fd, const Vector<String16>& args) const; 296 297 int getAudioSessionId() { return mAudioSessionId; } 298 299 private: 300 friend class MediaPlayerService; 301 Client( const sp<MediaPlayerService>& service, 302 pid_t pid, 303 int32_t connId, 304 const sp<IMediaPlayerClient>& client, 305 int audioSessionId); 306 Client(); 307 virtual ~Client(); 308 309 void deletePlayer(); 310 311 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 312 313 314 315 // @param type Of the metadata to be tested. 316 // @return true if the metadata should be dropped according to 317 // the filters. 318 bool shouldDropMetadata(media::Metadata::Type type) const; 319 320 // Add a new element to the set of metadata updated. Noop if 321 // the element exists already. 322 // @param type Of the metadata to be recorded. 323 void addNewMetadataUpdate(media::Metadata::Type type); 324 325 mutable Mutex mLock; 326 sp<MediaPlayerBase> mPlayer; 327 sp<MediaPlayerService> mService; 328 sp<IMediaPlayerClient> mClient; 329 sp<AudioOutput> mAudioOutput; 330 pid_t mPid; 331 status_t mStatus; 332 bool mLoop; 333 int32_t mConnId; 334 int mAudioSessionId; 335 336 // Metadata filters. 337 media::Metadata::Filter mMetadataAllow; // protected by mLock 338 media::Metadata::Filter mMetadataDrop; // protected by mLock 339 340 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 341 // notification we try to update mMetadataUpdated which is a 342 // set: no duplicate. 343 // getMetadata clears this set. 344 media::Metadata::Filter mMetadataUpdated; // protected by mLock 345 346#if CALLBACK_ANTAGONIZER 347 Antagonizer* mAntagonizer; 348#endif 349 }; 350 351// ---------------------------------------------------------------------------- 352 353 MediaPlayerService(); 354 virtual ~MediaPlayerService(); 355 356 mutable Mutex mLock; 357 SortedVector< wp<Client> > mClients; 358 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 359 int32_t mNextConnId; 360 sp<IOMX> mOMX; 361}; 362 363// ---------------------------------------------------------------------------- 364 365}; // namespace android 366 367#endif // ANDROID_MEDIAPLAYERSERVICE_H 368