MediaPlayerService.h revision 2beeb50b1bba9e92f6cacfeca37fe9fa9d36ead1
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 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 status_t setAuxEffectSendLevel(float level); 95 status_t attachAuxEffect(int effectId); 96 virtual status_t dump(int fd, const Vector<String16>& args) const; 97 98 static bool isOnEmulator(); 99 static int getMinBufferCount(); 100 private: 101 static void setMinBufferCount(); 102 static void CallbackWrapper( 103 int event, void *me, void *info); 104 105 AudioTrack* mTrack; 106 AudioCallback mCallback; 107 void * mCallbackCookie; 108 int mStreamType; 109 float mLeftVolume; 110 float mRightVolume; 111 float mMsecsPerFrame; 112 uint32_t mLatency; 113 int mSessionId; 114 float mSendLevel; 115 int mAuxEffectId; 116 static bool mIsOnEmulator; 117 static int mMinBufferCount; // 12 for emulator; otherwise 4 118 119 }; 120 121 class AudioCache : public MediaPlayerBase::AudioSink 122 { 123 public: 124 AudioCache(const char* name); 125 virtual ~AudioCache() {} 126 127 virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); } 128 virtual bool realtime() const { return false; } 129 virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; } 130 virtual ssize_t frameCount() const { return mFrameCount; } 131 virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; } 132 virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AudioSystem::PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); } 133 virtual uint32_t latency() const; 134 virtual float msecsPerFrame() const; 135 virtual status_t getPosition(uint32_t *position); 136 137 virtual status_t open( 138 uint32_t sampleRate, int channelCount, int format, 139 int bufferCount = 1, 140 AudioCallback cb = NULL, void *cookie = NULL); 141 142 virtual void start(); 143 virtual ssize_t write(const void* buffer, size_t size); 144 virtual void stop(); 145 virtual void flush() {} 146 virtual void pause() {} 147 virtual void close() {} 148 void setAudioStreamType(int streamType) {} 149 void setVolume(float left, float right) {} 150 uint32_t sampleRate() const { return mSampleRate; } 151 uint32_t format() const { return (uint32_t)mFormat; } 152 size_t size() const { return mSize; } 153 status_t wait(); 154 155 sp<IMemoryHeap> getHeap() const { return mHeap; } 156 157 static void notify(void* cookie, int msg, int ext1, int ext2); 158 virtual status_t dump(int fd, const Vector<String16>& args) const; 159 160 private: 161 AudioCache(); 162 163 Mutex mLock; 164 Condition mSignal; 165 sp<MemoryHeapBase> mHeap; 166 float mMsecsPerFrame; 167 uint16_t mChannelCount; 168 uint16_t mFormat; 169 ssize_t mFrameCount; 170 uint32_t mSampleRate; 171 uint32_t mSize; 172 int mError; 173 bool mCommandComplete; 174 175 sp<Thread> mCallbackThread; 176 }; 177 178public: 179 static void instantiate(); 180 181 // IMediaPlayerService interface 182 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid); 183 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 184 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid); 185 186 // House keeping for media player clients 187 virtual sp<IMediaPlayer> create( 188 pid_t pid, const sp<IMediaPlayerClient>& client, const char* url, 189 const KeyedVector<String8, String8> *headers, int audioSessionId); 190 191 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int fd, int64_t offset, int64_t length, int audioSessionId); 192 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat); 193 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat); 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 201private: 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 virtual status_t setAuxEffectSendLevel(float level); 228 virtual status_t attachAuxEffect(int effectId); 229 230 sp<MediaPlayerBase> createPlayer(player_type playerType); 231 232 status_t setDataSource( 233 const char *url, 234 const KeyedVector<String8, String8> *headers); 235 236 status_t setDataSource(int fd, int64_t offset, int64_t length); 237 static void notify(void* cookie, int msg, int ext1, int ext2); 238 239 pid_t pid() const { return mPid; } 240 virtual status_t dump(int fd, const Vector<String16>& args) const; 241 242 int getAudioSessionId() { return mAudioSessionId; } 243 244 private: 245 friend class MediaPlayerService; 246 Client( const sp<MediaPlayerService>& service, 247 pid_t pid, 248 int32_t connId, 249 const sp<IMediaPlayerClient>& client, 250 int audioSessionId); 251 Client(); 252 virtual ~Client(); 253 254 void deletePlayer(); 255 256 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 257 258 259 260 // @param type Of the metadata to be tested. 261 // @return true if the metadata should be dropped according to 262 // the filters. 263 bool shouldDropMetadata(media::Metadata::Type type) const; 264 265 // Add a new element to the set of metadata updated. Noop if 266 // the element exists already. 267 // @param type Of the metadata to be recorded. 268 void addNewMetadataUpdate(media::Metadata::Type type); 269 270 mutable Mutex mLock; 271 sp<MediaPlayerBase> mPlayer; 272 sp<MediaPlayerService> mService; 273 sp<IMediaPlayerClient> mClient; 274 sp<AudioOutput> mAudioOutput; 275 pid_t mPid; 276 status_t mStatus; 277 bool mLoop; 278 int32_t mConnId; 279 int mAudioSessionId; 280 281 // Metadata filters. 282 media::Metadata::Filter mMetadataAllow; // protected by mLock 283 media::Metadata::Filter mMetadataDrop; // protected by mLock 284 285 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 286 // notification we try to update mMetadataUpdated which is a 287 // set: no duplicate. 288 // getMetadata clears this set. 289 media::Metadata::Filter mMetadataUpdated; // protected by mLock 290 291#if CALLBACK_ANTAGONIZER 292 Antagonizer* mAntagonizer; 293#endif 294 }; 295 296// ---------------------------------------------------------------------------- 297 298 MediaPlayerService(); 299 virtual ~MediaPlayerService(); 300 301 mutable Mutex mLock; 302 SortedVector< wp<Client> > mClients; 303 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 304 int32_t mNextConnId; 305 sp<IOMX> mOMX; 306}; 307 308// ---------------------------------------------------------------------------- 309 310}; // namespace android 311 312#endif // ANDROID_MEDIAPLAYERSERVICE_H 313