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 namespace android { 34 35 class IMediaRecorder; 36 class IMediaMetadataRetriever; 37 class IOMX; 38 class MediaRecorderClient; 39 40 #define CALLBACK_ANTAGONIZER 0 41 #if CALLBACK_ANTAGONIZER 42 class Antagonizer { 43 public: 44 Antagonizer(notify_callback_f cb, void* client); 45 void start() { mActive = true; } 46 void stop() { mActive = false; } 47 void kill(); 48 private: 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 61 class MediaPlayerService : public BnMediaPlayerService 62 { 63 class Client; 64 65 class AudioOutput : public MediaPlayerBase::AudioSink 66 { 67 public: 68 AudioOutput(); 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 81 virtual status_t open( 82 uint32_t sampleRate, int channelCount, 83 int format, int bufferCount, 84 AudioCallback cb, void *cookie); 85 86 virtual void start(); 87 virtual ssize_t write(const void* buffer, size_t size); 88 virtual void stop(); 89 virtual void flush(); 90 virtual void pause(); 91 virtual void close(); 92 void setAudioStreamType(int streamType) { mStreamType = streamType; } 93 void setVolume(float left, float right); 94 virtual status_t dump(int fd, const Vector<String16>& args) const; 95 96 static bool isOnEmulator(); 97 static int getMinBufferCount(); 98 private: 99 static void setMinBufferCount(); 100 static void CallbackWrapper( 101 int event, void *me, void *info); 102 103 AudioTrack* mTrack; 104 AudioCallback mCallback; 105 void * mCallbackCookie; 106 int mStreamType; 107 float mLeftVolume; 108 float mRightVolume; 109 float mMsecsPerFrame; 110 uint32_t mLatency; 111 112 static bool mIsOnEmulator; 113 static int mMinBufferCount; // 12 for emulator; otherwise 4 114 115 public: // visualization hack support 116 uint32_t mNumFramesWritten; 117 void snoopWrite(const void*, size_t); 118 }; 119 120 class AudioCache : public MediaPlayerBase::AudioSink 121 { 122 public: 123 AudioCache(const char* name); 124 virtual ~AudioCache() {} 125 126 virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); } 127 virtual bool realtime() const { return false; } 128 virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; } 129 virtual ssize_t frameCount() const { return mFrameCount; } 130 virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; } 131 virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AudioSystem::PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); } 132 virtual uint32_t latency() const; 133 virtual float msecsPerFrame() const; 134 virtual status_t getPosition(uint32_t *position); 135 136 virtual status_t open( 137 uint32_t sampleRate, int channelCount, int format, 138 int bufferCount = 1, 139 AudioCallback cb = NULL, void *cookie = NULL); 140 141 virtual void start(); 142 virtual ssize_t write(const void* buffer, size_t size); 143 virtual void stop(); 144 virtual void flush() {} 145 virtual void pause() {} 146 virtual void close() {} 147 void setAudioStreamType(int streamType) {} 148 void setVolume(float left, float right) {} 149 uint32_t sampleRate() const { return mSampleRate; } 150 uint32_t format() const { return (uint32_t)mFormat; } 151 size_t size() const { return mSize; } 152 status_t wait(); 153 154 sp<IMemoryHeap> getHeap() const { return mHeap; } 155 156 static void notify(void* cookie, int msg, int ext1, int ext2); 157 virtual status_t dump(int fd, const Vector<String16>& args) const; 158 159 private: 160 AudioCache(); 161 162 Mutex mLock; 163 Condition mSignal; 164 sp<MemoryHeapBase> mHeap; 165 float mMsecsPerFrame; 166 uint16_t mChannelCount; 167 uint16_t mFormat; 168 ssize_t mFrameCount; 169 uint32_t mSampleRate; 170 uint32_t mSize; 171 int mError; 172 bool mCommandComplete; 173 174 sp<Thread> mCallbackThread; 175 }; 176 177 public: 178 static void instantiate(); 179 180 // IMediaPlayerService interface 181 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid); 182 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 183 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid); 184 185 // House keeping for media player clients 186 virtual sp<IMediaPlayer> create( 187 pid_t pid, const sp<IMediaPlayerClient>& client, const char* url, 188 const KeyedVector<String8, String8> *headers); 189 190 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int fd, int64_t offset, int64_t length); 191 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat); 192 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat); 193 virtual sp<IMemory> snoop(); 194 virtual sp<IOMX> getOMX(); 195 196 virtual status_t dump(int fd, const Vector<String16>& args); 197 198 void removeClient(wp<Client> client); 199 200 201 private: 202 203 class Client : public BnMediaPlayer { 204 205 // IMediaPlayer interface 206 virtual void disconnect(); 207 virtual status_t setVideoSurface(const sp<ISurface>& surface); 208 virtual status_t prepareAsync(); 209 virtual status_t start(); 210 virtual status_t stop(); 211 virtual status_t pause(); 212 virtual status_t isPlaying(bool* state); 213 virtual status_t seekTo(int msec); 214 virtual status_t getCurrentPosition(int* msec); 215 virtual status_t getDuration(int* msec); 216 virtual status_t reset(); 217 virtual status_t setAudioStreamType(int type); 218 virtual status_t setLooping(int loop); 219 virtual status_t setVolume(float leftVolume, float rightVolume); 220 virtual status_t invoke(const Parcel& request, Parcel *reply); 221 virtual status_t setMetadataFilter(const Parcel& filter); 222 virtual status_t getMetadata(bool update_only, 223 bool apply_filter, 224 Parcel *reply); 225 virtual status_t suspend(); 226 virtual status_t resume(); 227 228 sp<MediaPlayerBase> createPlayer(player_type playerType); 229 230 status_t setDataSource( 231 const char *url, 232 const KeyedVector<String8, String8> *headers); 233 234 status_t setDataSource(int fd, int64_t offset, int64_t length); 235 static void notify(void* cookie, int msg, int ext1, int ext2); 236 237 pid_t pid() const { return mPid; } 238 virtual status_t dump(int fd, const Vector<String16>& args) const; 239 240 private: 241 friend class MediaPlayerService; 242 Client( const sp<MediaPlayerService>& service, 243 pid_t pid, 244 int32_t connId, 245 const sp<IMediaPlayerClient>& client); 246 Client(); 247 virtual ~Client(); 248 249 void deletePlayer(); 250 251 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 252 253 254 255 // @param type Of the metadata to be tested. 256 // @return true if the metadata should be dropped according to 257 // the filters. 258 bool shouldDropMetadata(media::Metadata::Type type) const; 259 260 // Add a new element to the set of metadata updated. Noop if 261 // the element exists already. 262 // @param type Of the metadata to be recorded. 263 void addNewMetadataUpdate(media::Metadata::Type type); 264 265 mutable Mutex mLock; 266 sp<MediaPlayerBase> mPlayer; 267 sp<MediaPlayerService> mService; 268 sp<IMediaPlayerClient> mClient; 269 sp<AudioOutput> mAudioOutput; 270 pid_t mPid; 271 status_t mStatus; 272 bool mLoop; 273 int32_t mConnId; 274 275 // Metadata filters. 276 media::Metadata::Filter mMetadataAllow; // protected by mLock 277 media::Metadata::Filter mMetadataDrop; // protected by mLock 278 279 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 280 // notification we try to update mMetadataUpdated which is a 281 // set: no duplicate. 282 // getMetadata clears this set. 283 media::Metadata::Filter mMetadataUpdated; // protected by mLock 284 285 #if CALLBACK_ANTAGONIZER 286 Antagonizer* mAntagonizer; 287 #endif 288 }; 289 290 // ---------------------------------------------------------------------------- 291 292 MediaPlayerService(); 293 virtual ~MediaPlayerService(); 294 295 mutable Mutex mLock; 296 SortedVector< wp<Client> > mClients; 297 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 298 int32_t mNextConnId; 299 sp<IOMX> mOMX; 300 }; 301 302 // ---------------------------------------------------------------------------- 303 304 }; // namespace android 305 306 #endif // ANDROID_MEDIAPLAYERSERVICE_H 307
