MediaPlayerService.h revision 318ad9c1d9d6515026dfc2c021359d27decaa7a1
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/Vector.h> 27#include <ui/SurfaceComposerClient.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; 38 39#define CALLBACK_ANTAGONIZER 0 40#if CALLBACK_ANTAGONIZER 41class Antagonizer { 42public: 43 Antagonizer(notify_callback_f cb, void* client); 44 void start() { mActive = true; } 45 void stop() { mActive = false; } 46 void kill(); 47private: 48 static const int interval; 49 Antagonizer(); 50 static int callbackThread(void* cookie); 51 Mutex mLock; 52 Condition mCondition; 53 bool mExit; 54 bool mActive; 55 void* mClient; 56 notify_callback_f mCb; 57}; 58#endif 59 60class MediaPlayerService : public BnMediaPlayerService 61{ 62 class Client; 63 64 class AudioOutput : public MediaPlayerBase::AudioSink 65 { 66 public: 67 AudioOutput(); 68 virtual ~AudioOutput(); 69 70 virtual bool ready() const { return mTrack != NULL; } 71 virtual bool realtime() const { return true; } 72 virtual ssize_t bufferSize() const; 73 virtual ssize_t frameCount() const; 74 virtual ssize_t channelCount() const; 75 virtual ssize_t frameSize() const; 76 virtual uint32_t latency() const; 77 virtual float msecsPerFrame() const; 78 79 virtual status_t open( 80 uint32_t sampleRate, int channelCount, 81 int format, int bufferCount, 82 AudioCallback cb, void *cookie); 83 84 virtual void start(); 85 virtual ssize_t write(const void* buffer, size_t size); 86 virtual void stop(); 87 virtual void flush(); 88 virtual void pause(); 89 virtual void close(); 90 void setAudioStreamType(int streamType) { mStreamType = streamType; } 91 void setVolume(float left, float right); 92 virtual status_t dump(int fd, const Vector<String16>& args) const; 93 94 static bool isOnEmulator(); 95 static int getMinBufferCount(); 96 private: 97 static void setMinBufferCount(); 98 static void CallbackWrapper( 99 int event, void *me, void *info); 100 101 AudioTrack* mTrack; 102 AudioCallback mCallback; 103 void * mCallbackCookie; 104 int mStreamType; 105 float mLeftVolume; 106 float mRightVolume; 107 float mMsecsPerFrame; 108 uint32_t mLatency; 109 110 // TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround 111 static const uint32_t kAudioVideoDelayMs; 112 static bool mIsOnEmulator; 113 static int mMinBufferCount; // 12 for emulator; otherwise 4 114 115 public: // visualization hack support 116 uint32_t mNumFramesWritten; 117 }; 118 119 class AudioCache : public MediaPlayerBase::AudioSink 120 { 121 public: 122 AudioCache(const char* name); 123 virtual ~AudioCache() {} 124 125 virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); } 126 virtual bool realtime() const { return false; } 127 virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; } 128 virtual ssize_t frameCount() const { return mFrameCount; } 129 virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; } 130 virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AudioSystem::PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); } 131 virtual uint32_t latency() const; 132 virtual float msecsPerFrame() const; 133 134 virtual status_t open( 135 uint32_t sampleRate, int channelCount, int format, 136 int bufferCount = 1, 137 AudioCallback cb = NULL, void *cookie = NULL); 138 139 virtual void start() {} 140 virtual ssize_t write(const void* buffer, size_t size); 141 virtual void stop() {} 142 virtual void flush() {} 143 virtual void pause() {} 144 virtual void close() {} 145 void setAudioStreamType(int streamType) {} 146 void setVolume(float left, float right) {} 147 uint32_t sampleRate() const { return mSampleRate; } 148 uint32_t format() const { return (uint32_t)mFormat; } 149 size_t size() const { return mSize; } 150 status_t wait(); 151 152 sp<IMemoryHeap> getHeap() const { return mHeap; } 153 154 static void notify(void* cookie, int msg, int ext1, int ext2); 155 virtual status_t dump(int fd, const Vector<String16>& args) const; 156 157 private: 158 AudioCache(); 159 160 Mutex mLock; 161 Condition mSignal; 162 sp<MemoryHeapBase> mHeap; 163 float mMsecsPerFrame; 164 uint16_t mChannelCount; 165 uint16_t mFormat; 166 ssize_t mFrameCount; 167 uint32_t mSampleRate; 168 uint32_t mSize; 169 int mError; 170 bool mCommandComplete; 171 }; 172 173public: 174 static void instantiate(); 175 176 // IMediaPlayerService interface 177 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid); 178 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid); 179 180 // House keeping for media player clients 181 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, const char* url); 182 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int fd, int64_t offset, int64_t length); 183 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat); 184 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat); 185 virtual sp<IMemory> snoop(); 186 virtual sp<IOMX> getOMX(); 187 188 virtual status_t dump(int fd, const Vector<String16>& args); 189 190 void removeClient(wp<Client> client); 191 192 193private: 194 195 class Client : public BnMediaPlayer { 196 197 // IMediaPlayer interface 198 virtual void disconnect(); 199 virtual status_t setVideoSurface(const sp<ISurface>& surface); 200 virtual status_t prepareAsync(); 201 virtual status_t start(); 202 virtual status_t stop(); 203 virtual status_t pause(); 204 virtual status_t isPlaying(bool* state); 205 virtual status_t seekTo(int msec); 206 virtual status_t getCurrentPosition(int* msec); 207 virtual status_t getDuration(int* msec); 208 virtual status_t reset(); 209 virtual status_t setAudioStreamType(int type); 210 virtual status_t setLooping(int loop); 211 virtual status_t setVolume(float leftVolume, float rightVolume); 212 virtual status_t invoke(const Parcel& request, Parcel *reply); 213 virtual status_t setMetadataFilter(const Parcel& filter); 214 virtual status_t getMetadata(bool update_only, 215 bool apply_filter, 216 Parcel *reply); 217 218 sp<MediaPlayerBase> createPlayer(player_type playerType); 219 status_t setDataSource(const char *url); 220 status_t setDataSource(int fd, int64_t offset, int64_t length); 221 static void notify(void* cookie, int msg, int ext1, int ext2); 222 223 pid_t pid() const { return mPid; } 224 virtual status_t dump(int fd, const Vector<String16>& args) const; 225 226 private: 227 friend class MediaPlayerService; 228 Client( const sp<MediaPlayerService>& service, 229 pid_t pid, 230 int32_t connId, 231 const sp<IMediaPlayerClient>& client); 232 Client(); 233 virtual ~Client(); 234 235 void deletePlayer(); 236 237 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 238 239 240 241 // @param type Of the metadata to be tested. 242 // @return true if the metadata should be dropped according to 243 // the filters. 244 bool shouldDropMetadata(media::Metadata::Type type) const; 245 246 // Add a new element to the set of metadata updated. Noop if 247 // the element exists already. 248 // @param type Of the metadata to be recorded. 249 void addNewMetadataUpdate(media::Metadata::Type type); 250 251 mutable Mutex mLock; 252 sp<MediaPlayerBase> mPlayer; 253 sp<MediaPlayerService> mService; 254 sp<IMediaPlayerClient> mClient; 255 sp<AudioOutput> mAudioOutput; 256 pid_t mPid; 257 status_t mStatus; 258 bool mLoop; 259 int32_t mConnId; 260 261 // Metadata filters. 262 media::Metadata::Filter mMetadataAllow; // protected by mLock 263 media::Metadata::Filter mMetadataDrop; // protected by mLock 264 265 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 266 // notification we try to update mMetadataUpdated which is a 267 // set: no duplicate. 268 // getMetadata clears this set. 269 media::Metadata::Filter mMetadataUpdated; // protected by mLock 270 271#if CALLBACK_ANTAGONIZER 272 Antagonizer* mAntagonizer; 273#endif 274 }; 275 276// ---------------------------------------------------------------------------- 277 278 MediaPlayerService(); 279 virtual ~MediaPlayerService(); 280 281 mutable Mutex mLock; 282 SortedVector< wp<Client> > mClients; 283 int32_t mNextConnId; 284 sp<IOMX> mOMX; 285}; 286 287// ---------------------------------------------------------------------------- 288 289}; // namespace android 290 291#endif // ANDROID_MEDIAPLAYERSERVICE_H 292