MediaPlayerService.h revision e0bbac912f9ea561ed96ad8b0a354cbab8f345a1 
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 <arpa/inet.h>
22
23#include <utils/threads.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/MediaPlayerInterface.h>
30#include <media/Metadata.h>
31#include <media/stagefright/foundation/ABase.h>
32
33#include <system/audio.h>
34
35namespace android {
36
37struct AudioPlaybackRate;
38class AudioTrack;
39struct AVSyncSettings;
40class IDataSource;
41class IMediaRecorder;
42class IMediaMetadataRetriever;
43class IOMX;
44class IRemoteDisplay;
45class IRemoteDisplayClient;
46class MediaRecorderClient;
47
48#define CALLBACK_ANTAGONIZER 0
49#if CALLBACK_ANTAGONIZER
50class Antagonizer {
51public:
52    Antagonizer(notify_callback_f cb, void* client);
53    void start() { mActive = true; }
54    void stop() { mActive = false; }
55    void kill();
56private:
57    static const int interval;
58    Antagonizer();
59    static int callbackThread(void* cookie);
60    Mutex               mLock;
61    Condition           mCondition;
62    bool                mExit;
63    bool                mActive;
64    void*               mClient;
65    notify_callback_f   mCb;
66};
67#endif
68
69class MediaPlayerService : public BnMediaPlayerService
70{
71    class Client;
72
73    class AudioOutput : public MediaPlayerBase::AudioSink
74    {
75        class CallbackData;
76
77     public:
78                                AudioOutput(audio_session_t sessionId, int uid, int pid,
79                                        const audio_attributes_t * attr);
80        virtual                 ~AudioOutput();
81
82        virtual bool            ready() const { return mTrack != 0; }
83        virtual ssize_t         bufferSize() const;
84        virtual ssize_t         frameCount() const;
85        virtual ssize_t         channelCount() const;
86        virtual ssize_t         frameSize() const;
87        virtual uint32_t        latency() const;
88        virtual float           msecsPerFrame() const;
89        virtual status_t        getPosition(uint32_t *position) const;
90        virtual status_t        getTimestamp(AudioTimestamp &ts) const;
91        virtual int64_t         getPlayedOutDurationUs(int64_t nowUs) const;
92        virtual status_t        getFramesWritten(uint32_t *frameswritten) const;
93        virtual audio_session_t getSessionId() const;
94        virtual uint32_t        getSampleRate() const;
95        virtual int64_t         getBufferDurationInUs() const;
96
97        virtual status_t        open(
98                uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
99                audio_format_t format, int bufferCount,
100                AudioCallback cb, void *cookie,
101                audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
102                const audio_offload_info_t *offloadInfo = NULL,
103                bool doNotReconnect = false,
104                uint32_t suggestedFrameCount = 0);
105
106        virtual status_t        start();
107        virtual ssize_t         write(const void* buffer, size_t size, bool blocking = true);
108        virtual void            stop();
109        virtual void            flush();
110        virtual void            pause();
111        virtual void            close();
112                void            setAudioStreamType(audio_stream_type_t streamType);
113        virtual audio_stream_type_t getAudioStreamType() const { return mStreamType; }
114                void            setAudioAttributes(const audio_attributes_t * attributes);
115
116                void            setVolume(float left, float right);
117        virtual status_t        setPlaybackRate(const AudioPlaybackRate& rate);
118        virtual status_t        getPlaybackRate(AudioPlaybackRate* rate /* nonnull */);
119
120                status_t        setAuxEffectSendLevel(float level);
121                status_t        attachAuxEffect(int effectId);
122        virtual status_t        dump(int fd, const Vector<String16>& args) const;
123
124        static bool             isOnEmulator();
125        static int              getMinBufferCount();
126                void            setNextOutput(const sp<AudioOutput>& nextOutput);
127                void            switchToNextOutput();
128        virtual bool            needsTrailingPadding() { return mNextOutput == NULL; }
129        virtual status_t        setParameters(const String8& keyValuePairs);
130        virtual String8         getParameters(const String8& keys);
131
132    private:
133        static void             setMinBufferCount();
134        static void             CallbackWrapper(
135                int event, void *me, void *info);
136               void             deleteRecycledTrack_l();
137               void             close_l();
138           status_t             updateTrack();
139
140        sp<AudioTrack>          mTrack;
141        sp<AudioTrack>          mRecycledTrack;
142        sp<AudioOutput>         mNextOutput;
143        AudioCallback           mCallback;
144        void *                  mCallbackCookie;
145        CallbackData *          mCallbackData;
146        audio_stream_type_t     mStreamType;
147        audio_attributes_t *    mAttributes;
148        float                   mLeftVolume;
149        float                   mRightVolume;
150        AudioPlaybackRate       mPlaybackRate;
151        uint32_t                mSampleRateHz; // sample rate of the content, as set in open()
152        float                   mMsecsPerFrame;
153        size_t                  mFrameSize;
154        audio_session_t         mSessionId;
155        int                     mUid;
156        int                     mPid;
157        float                   mSendLevel;
158        int                     mAuxEffectId;
159        audio_output_flags_t    mFlags;
160        mutable Mutex           mLock;
161
162        // static variables below not protected by mutex
163        static bool             mIsOnEmulator;
164        static int              mMinBufferCount;  // 12 for emulator; otherwise 4
165
166        // CallbackData is what is passed to the AudioTrack as the "user" data.
167        // We need to be able to target this to a different Output on the fly,
168        // so we can't use the Output itself for this.
169        class CallbackData {
170            friend AudioOutput;
171        public:
172            CallbackData(AudioOutput *cookie) {
173                mData = cookie;
174                mSwitching = false;
175            }
176            AudioOutput *   getOutput() const { return mData; }
177            void            setOutput(AudioOutput* newcookie) { mData = newcookie; }
178            // lock/unlock are used by the callback before accessing the payload of this object
179            void            lock() const { mLock.lock(); }
180            void            unlock() const { mLock.unlock(); }
181
182            // tryBeginTrackSwitch/endTrackSwitch are used when the CallbackData is handed over
183            // to the next sink.
184
185            // tryBeginTrackSwitch() returns true only if it obtains the lock.
186            bool            tryBeginTrackSwitch() {
187                LOG_ALWAYS_FATAL_IF(mSwitching, "tryBeginTrackSwitch() already called");
188                if (mLock.tryLock() != OK) {
189                    return false;
190                }
191                mSwitching = true;
192                return true;
193            }
194            void            endTrackSwitch() {
195                if (mSwitching) {
196                    mLock.unlock();
197                }
198                mSwitching = false;
199            }
200        private:
201            AudioOutput *   mData;
202            mutable Mutex   mLock; // a recursive mutex might make this unnecessary.
203            bool            mSwitching;
204            DISALLOW_EVIL_CONSTRUCTORS(CallbackData);
205        };
206
207    }; // AudioOutput
208
209
210public:
211    static  void                instantiate();
212
213    // IMediaPlayerService interface
214    virtual sp<IMediaRecorder>  createMediaRecorder(const String16 &opPackageName);
215    void    removeMediaRecorderClient(wp<MediaRecorderClient> client);
216    virtual sp<IMediaMetadataRetriever> createMetadataRetriever();
217
218    virtual sp<IMediaPlayer>    create(const sp<IMediaPlayerClient>& client,
219                                       audio_session_t audioSessionId);
220
221    virtual sp<IMediaCodecList> getCodecList() const;
222    virtual sp<IOMX>            getOMX();
223    virtual sp<IHDCP>           makeHDCP(bool createEncryptionModule);
224
225    virtual sp<IRemoteDisplay> listenForRemoteDisplay(const String16 &opPackageName,
226            const sp<IRemoteDisplayClient>& client, const String8& iface);
227    virtual status_t            dump(int fd, const Vector<String16>& args);
228
229            void                removeClient(wp<Client> client);
230
231    enum {
232        MEDIASERVER_PROCESS_DEATH = 0,
233        MEDIAEXTRACTOR_PROCESS_DEATH = 1,
234        MEDIACODEC_PROCESS_DEATH = 2,
235        AUDIO_PROCESS_DEATH = 3,   // currently no need to track this
236        CAMERA_PROCESS_DEATH = 4
237    };
238
239    // For battery usage tracking purpose
240    struct BatteryUsageInfo {
241        // how many streams are being played by one UID
242        int     refCount;
243        // a temp variable to store the duration(ms) of audio codecs
244        // when we start a audio codec, we minus the system time from audioLastTime
245        // when we pause it, we add the system time back to the audioLastTime
246        // so after the pause, audioLastTime = pause time - start time
247        // if multiple audio streams are played (or recorded), then audioLastTime
248        // = the total playing time of all the streams
249        int32_t audioLastTime;
250        // when all the audio streams are being paused, we assign audioLastTime to
251        // this variable, so this value could be provided to the battery app
252        // in the next pullBatteryData call
253        int32_t audioTotalTime;
254
255        int32_t videoLastTime;
256        int32_t videoTotalTime;
257    };
258    KeyedVector<int, BatteryUsageInfo>    mBatteryData;
259
260    enum {
261        SPEAKER,
262        OTHER_AUDIO_DEVICE,
263        SPEAKER_AND_OTHER,
264        NUM_AUDIO_DEVICES
265    };
266
267    struct BatteryAudioFlingerUsageInfo {
268        int refCount; // how many audio streams are being played
269        int deviceOn[NUM_AUDIO_DEVICES]; // whether the device is currently used
270        int32_t lastTime[NUM_AUDIO_DEVICES]; // in ms
271        // totalTime[]: total time of audio output devices usage
272        int32_t totalTime[NUM_AUDIO_DEVICES]; // in ms
273    };
274
275    // This varialble is used to record the usage of audio output device
276    // for battery app
277    BatteryAudioFlingerUsageInfo mBatteryAudio;
278
279    // Collect info of the codec usage from media player and media recorder
280    virtual void                addBatteryData(uint32_t params);
281    // API for the Battery app to pull the data of codecs usage
282    virtual status_t            pullBatteryData(Parcel* reply);
283private:
284
285    class Client : public BnMediaPlayer {
286        // IMediaPlayer interface
287        virtual void            disconnect();
288        virtual status_t        setVideoSurfaceTexture(
289                                        const sp<IGraphicBufferProducer>& bufferProducer);
290        virtual status_t        prepareAsync();
291        virtual status_t        start();
292        virtual status_t        stop();
293        virtual status_t        pause();
294        virtual status_t        isPlaying(bool* state);
295        virtual status_t        setPlaybackSettings(const AudioPlaybackRate& rate);
296        virtual status_t        getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */);
297        virtual status_t        setSyncSettings(const AVSyncSettings& rate, float videoFpsHint);
298        virtual status_t        getSyncSettings(AVSyncSettings* rate /* nonnull */,
299                                                float* videoFps /* nonnull */);
300        virtual status_t        seekTo(int msec);
301        virtual status_t        getCurrentPosition(int* msec);
302        virtual status_t        getDuration(int* msec);
303        virtual status_t        reset();
304        virtual status_t        setAudioStreamType(audio_stream_type_t type);
305        virtual status_t        setLooping(int loop);
306        virtual status_t        setVolume(float leftVolume, float rightVolume);
307        virtual status_t        invoke(const Parcel& request, Parcel *reply);
308        virtual status_t        setMetadataFilter(const Parcel& filter);
309        virtual status_t        getMetadata(bool update_only,
310                                            bool apply_filter,
311                                            Parcel *reply);
312        virtual status_t        setAuxEffectSendLevel(float level);
313        virtual status_t        attachAuxEffect(int effectId);
314        virtual status_t        setParameter(int key, const Parcel &request);
315        virtual status_t        getParameter(int key, Parcel *reply);
316        virtual status_t        setRetransmitEndpoint(const struct sockaddr_in* endpoint);
317        virtual status_t        getRetransmitEndpoint(struct sockaddr_in* endpoint);
318        virtual status_t        setNextPlayer(const sp<IMediaPlayer>& player);
319
320        sp<MediaPlayerBase>     createPlayer(player_type playerType);
321
322        virtual status_t        setDataSource(
323                        const sp<IMediaHTTPService> &httpService,
324                        const char *url,
325                        const KeyedVector<String8, String8> *headers);
326
327        virtual status_t        setDataSource(int fd, int64_t offset, int64_t length);
328
329        virtual status_t        setDataSource(const sp<IStreamSource> &source);
330        virtual status_t        setDataSource(const sp<IDataSource> &source);
331
332
333        sp<MediaPlayerBase>     setDataSource_pre(player_type playerType);
334        void                    setDataSource_post(const sp<MediaPlayerBase>& p,
335                                                   status_t status);
336
337        static  void            notify(void* cookie, int msg,
338                                       int ext1, int ext2, const Parcel *obj);
339
340                pid_t           pid() const { return mPid; }
341        virtual status_t        dump(int fd, const Vector<String16>& args);
342
343                audio_session_t getAudioSessionId() { return mAudioSessionId; }
344
345    private:
346        class ServiceDeathNotifier: public IBinder::DeathRecipient
347        {
348        public:
349            ServiceDeathNotifier(
350                    const sp<IBinder>& service,
351                    const sp<MediaPlayerBase>& listener,
352                    int which);
353            virtual ~ServiceDeathNotifier();
354            virtual void binderDied(const wp<IBinder>& who);
355
356        private:
357            int mWhich;
358            sp<IBinder> mService;
359            wp<MediaPlayerBase> mListener;
360        };
361
362        friend class MediaPlayerService;
363                                Client( const sp<MediaPlayerService>& service,
364                                        pid_t pid,
365                                        int32_t connId,
366                                        const sp<IMediaPlayerClient>& client,
367                                        audio_session_t audioSessionId,
368                                        uid_t uid);
369                                Client();
370        virtual                 ~Client();
371
372                void            deletePlayer();
373
374        sp<MediaPlayerBase>     getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; }
375
376
377
378        // @param type Of the metadata to be tested.
379        // @return true if the metadata should be dropped according to
380        //              the filters.
381        bool shouldDropMetadata(media::Metadata::Type type) const;
382
383        // Add a new element to the set of metadata updated. Noop if
384        // the element exists already.
385        // @param type Of the metadata to be recorded.
386        void addNewMetadataUpdate(media::Metadata::Type type);
387
388        // Disconnect from the currently connected ANativeWindow.
389        void disconnectNativeWindow();
390
391        status_t setAudioAttributes_l(const Parcel &request);
392
393        mutable     Mutex                       mLock;
394                    sp<MediaPlayerBase>         mPlayer;
395                    sp<MediaPlayerService>      mService;
396                    sp<IMediaPlayerClient>      mClient;
397                    sp<AudioOutput>             mAudioOutput;
398                    pid_t                       mPid;
399                    status_t                    mStatus;
400                    bool                        mLoop;
401                    int32_t                     mConnId;
402                    audio_session_t             mAudioSessionId;
403                    audio_attributes_t *        mAudioAttributes;
404                    uid_t                       mUID;
405                    sp<ANativeWindow>           mConnectedWindow;
406                    sp<IBinder>                 mConnectedWindowBinder;
407                    struct sockaddr_in          mRetransmitEndpoint;
408                    bool                        mRetransmitEndpointValid;
409                    sp<Client>                  mNextClient;
410
411        // Metadata filters.
412        media::Metadata::Filter mMetadataAllow;  // protected by mLock
413        media::Metadata::Filter mMetadataDrop;  // protected by mLock
414
415        // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE
416        // notification we try to update mMetadataUpdated which is a
417        // set: no duplicate.
418        // getMetadata clears this set.
419        media::Metadata::Filter mMetadataUpdated;  // protected by mLock
420
421        sp<IBinder::DeathRecipient> mExtractorDeathListener;
422        sp<IBinder::DeathRecipient> mCodecDeathListener;
423#if CALLBACK_ANTAGONIZER
424                    Antagonizer*                mAntagonizer;
425#endif
426    }; // Client
427
428// ----------------------------------------------------------------------------
429
430                            MediaPlayerService();
431    virtual                 ~MediaPlayerService();
432
433    mutable     Mutex                       mLock;
434                SortedVector< wp<Client> >  mClients;
435                SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients;
436                int32_t                     mNextConnId;
437                sp<IOMX>                    mOMX;
438};
439
440// ----------------------------------------------------------------------------
441
442}; // namespace android
443
444#endif // ANDROID_MEDIAPLAYERSERVICE_H
445