MediaPlayerService.h revision 1173118eace0e9e347cb007f0da817cee87579ed
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, int ext1, int ext2); 160 virtual status_t dump(int fd, const Vector<String16>& args) const; 161 162 private: 163 AudioCache(); 164 165 Mutex mLock; 166 Condition mSignal; 167 sp<MemoryHeapBase> mHeap; 168 float mMsecsPerFrame; 169 uint16_t mChannelCount; 170 uint16_t mFormat; 171 ssize_t mFrameCount; 172 uint32_t mSampleRate; 173 uint32_t mSize; 174 int mError; 175 bool mCommandComplete; 176 177 sp<Thread> mCallbackThread; 178 }; 179 180public: 181 static void instantiate(); 182 183 // IMediaPlayerService interface 184 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid); 185 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 186 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid); 187 188 // House keeping for media player clients 189 virtual sp<IMediaPlayer> create( 190 pid_t pid, const sp<IMediaPlayerClient>& client, const char* url, 191 const KeyedVector<String8, String8> *headers, int audioSessionId); 192 193 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int fd, int64_t offset, int64_t length, int audioSessionId); 194 195 virtual sp<IMediaPlayer> create( 196 pid_t pid, const sp<IMediaPlayerClient> &client, 197 const sp<IStreamSource> &source, int audioSessionId); 198 199 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat); 200 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* 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 // Collect info of the codec usage from media player and media recorder 229 virtual void addBatteryData(uint32_t params); 230 // API for the Battery app to pull the data of codecs usage 231 virtual status_t pullBatteryData(Parcel* reply); 232private: 233 234 class Client : public BnMediaPlayer { 235 236 // IMediaPlayer interface 237 virtual void disconnect(); 238 virtual status_t setVideoSurface(const sp<Surface>& surface); 239 virtual status_t setVideoSurfaceTexture( 240 const sp<ISurfaceTexture>& surfaceTexture); 241 virtual status_t prepareAsync(); 242 virtual status_t start(); 243 virtual status_t stop(); 244 virtual status_t pause(); 245 virtual status_t isPlaying(bool* state); 246 virtual status_t seekTo(int msec); 247 virtual status_t getCurrentPosition(int* msec); 248 virtual status_t getDuration(int* msec); 249 virtual status_t reset(); 250 virtual status_t setAudioStreamType(int type); 251 virtual status_t setLooping(int loop); 252 virtual status_t setVolume(float leftVolume, float rightVolume); 253 virtual status_t invoke(const Parcel& request, Parcel *reply); 254 virtual status_t setMetadataFilter(const Parcel& filter); 255 virtual status_t getMetadata(bool update_only, 256 bool apply_filter, 257 Parcel *reply); 258 virtual status_t setAuxEffectSendLevel(float level); 259 virtual status_t attachAuxEffect(int effectId); 260 261 sp<MediaPlayerBase> createPlayer(player_type playerType); 262 263 status_t setDataSource( 264 const char *url, 265 const KeyedVector<String8, String8> *headers); 266 267 status_t setDataSource(int fd, int64_t offset, int64_t length); 268 269 status_t setDataSource(const sp<IStreamSource> &source); 270 271 static void notify(void* cookie, int msg, int ext1, int ext2); 272 273 pid_t pid() const { return mPid; } 274 virtual status_t dump(int fd, const Vector<String16>& args) const; 275 276 int getAudioSessionId() { return mAudioSessionId; } 277 278 private: 279 friend class MediaPlayerService; 280 Client( const sp<MediaPlayerService>& service, 281 pid_t pid, 282 int32_t connId, 283 const sp<IMediaPlayerClient>& client, 284 int audioSessionId); 285 Client(); 286 virtual ~Client(); 287 288 void deletePlayer(); 289 290 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 291 292 293 294 // @param type Of the metadata to be tested. 295 // @return true if the metadata should be dropped according to 296 // the filters. 297 bool shouldDropMetadata(media::Metadata::Type type) const; 298 299 // Add a new element to the set of metadata updated. Noop if 300 // the element exists already. 301 // @param type Of the metadata to be recorded. 302 void addNewMetadataUpdate(media::Metadata::Type type); 303 304 mutable Mutex mLock; 305 sp<MediaPlayerBase> mPlayer; 306 sp<MediaPlayerService> mService; 307 sp<IMediaPlayerClient> mClient; 308 sp<AudioOutput> mAudioOutput; 309 pid_t mPid; 310 status_t mStatus; 311 bool mLoop; 312 int32_t mConnId; 313 int mAudioSessionId; 314 315 // Metadata filters. 316 media::Metadata::Filter mMetadataAllow; // protected by mLock 317 media::Metadata::Filter mMetadataDrop; // protected by mLock 318 319 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 320 // notification we try to update mMetadataUpdated which is a 321 // set: no duplicate. 322 // getMetadata clears this set. 323 media::Metadata::Filter mMetadataUpdated; // protected by mLock 324 325#if CALLBACK_ANTAGONIZER 326 Antagonizer* mAntagonizer; 327#endif 328 }; 329 330// ---------------------------------------------------------------------------- 331 332 MediaPlayerService(); 333 virtual ~MediaPlayerService(); 334 335 mutable Mutex mLock; 336 SortedVector< wp<Client> > mClients; 337 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 338 int32_t mNextConnId; 339 sp<IOMX> mOMX; 340}; 341 342// ---------------------------------------------------------------------------- 343 344}; // namespace android 345 346#endif // ANDROID_MEDIAPLAYERSERVICE_H 347