MediaPlayerService.h revision 22612345ae97648d5b6db43cc1aa30aad77f7bba 
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
37class AudioTrack;
38class IMediaRecorder;
39class IMediaMetadataRetriever;
40class IOMX;
41class IRemoteDisplay;
42class IRemoteDisplayClient;
43class MediaRecorderClient;
44
45#define CALLBACK_ANTAGONIZER 0
46#if CALLBACK_ANTAGONIZER
47class Antagonizer {
48public:
49    Antagonizer(notify_callback_f cb, void* client);
50    void start() { mActive = true; }
51    void stop() { mActive = false; }
52    void kill();
53private:
54    static const int interval;
55    Antagonizer();
56    static int callbackThread(void* cookie);
57    Mutex               mLock;
58    Condition           mCondition;
59    bool                mExit;
60    bool                mActive;
61    void*               mClient;
62    notify_callback_f   mCb;
63};
64#endif
65
66class MediaPlayerService : public BnMediaPlayerService
67{
68    class Client;
69
70    class AudioOutput : public MediaPlayerBase::AudioSink
71    {
72        class CallbackData;
73
74     public:
75                                AudioOutput(int sessionId, int uid);
76        virtual                 ~AudioOutput();
77
78        virtual bool            ready() const { return mTrack != 0; }
79        virtual bool            realtime() const { return true; }
80        virtual ssize_t         bufferSize() const;
81        virtual ssize_t         frameCount() const;
82        virtual ssize_t         channelCount() const;
83        virtual ssize_t         frameSize() const;
84        virtual uint32_t        latency() const;
85        virtual float           msecsPerFrame() const;
86        virtual status_t        getPosition(uint32_t *position) const;
87        virtual status_t        getFramesWritten(uint32_t *frameswritten) const;
88        virtual int             getSessionId() const;
89
90        virtual status_t        open(
91                uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
92                audio_format_t format, int bufferCount,
93                AudioCallback cb, void *cookie,
94                audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
95                const audio_offload_info_t *offloadInfo = NULL);
96
97        virtual status_t        start();
98        virtual ssize_t         write(const void* buffer, size_t size);
99        virtual void            stop();
100        virtual void            flush();
101        virtual void            pause();
102        virtual void            close();
103                void            setAudioStreamType(audio_stream_type_t streamType) {
104                                                                        mStreamType = streamType; }
105        virtual audio_stream_type_t getAudioStreamType() const { return mStreamType; }
106
107                void            setVolume(float left, float right);
108        virtual status_t        setPlaybackRatePermille(int32_t ratePermille);
109                status_t        setAuxEffectSendLevel(float level);
110                status_t        attachAuxEffect(int effectId);
111        virtual status_t        dump(int fd, const Vector<String16>& args) const;
112
113        static bool             isOnEmulator();
114        static int              getMinBufferCount();
115                void            setNextOutput(const sp<AudioOutput>& nextOutput);
116                void            switchToNextOutput();
117        virtual bool            needsTrailingPadding() { return mNextOutput == NULL; }
118        virtual status_t        setParameters(const String8& keyValuePairs);
119        virtual String8         getParameters(const String8& keys);
120
121    private:
122        static void             setMinBufferCount();
123        static void             CallbackWrapper(
124                int event, void *me, void *info);
125               void             deleteRecycledTrack();
126
127        sp<AudioTrack>          mTrack;
128        sp<AudioTrack>          mRecycledTrack;
129        sp<AudioOutput>         mNextOutput;
130        AudioCallback           mCallback;
131        void *                  mCallbackCookie;
132        CallbackData *          mCallbackData;
133        uint64_t                mBytesWritten;
134        audio_stream_type_t     mStreamType;
135        float                   mLeftVolume;
136        float                   mRightVolume;
137        int32_t                 mPlaybackRatePermille;
138        uint32_t                mSampleRateHz; // sample rate of the content, as set in open()
139        float                   mMsecsPerFrame;
140        int                     mSessionId;
141        int                     mUid;
142        float                   mSendLevel;
143        int                     mAuxEffectId;
144        static bool             mIsOnEmulator;
145        static int              mMinBufferCount;  // 12 for emulator; otherwise 4
146        audio_output_flags_t    mFlags;
147
148        // CallbackData is what is passed to the AudioTrack as the "user" data.
149        // We need to be able to target this to a different Output on the fly,
150        // so we can't use the Output itself for this.
151        class CallbackData {
152        public:
153            CallbackData(AudioOutput *cookie) {
154                mData = cookie;
155                mSwitching = false;
156            }
157            AudioOutput *   getOutput() { return mData;}
158            void            setOutput(AudioOutput* newcookie) { mData = newcookie; }
159            // lock/unlock are used by the callback before accessing the payload of this object
160            void            lock() { mLock.lock(); }
161            void            unlock() { mLock.unlock(); }
162            // beginTrackSwitch/endTrackSwitch are used when this object is being handed over
163            // to the next sink.
164            void            beginTrackSwitch() { mLock.lock(); mSwitching = true; }
165            void            endTrackSwitch() {
166                if (mSwitching) {
167                    mLock.unlock();
168                }
169                mSwitching = false;
170            }
171        private:
172            AudioOutput *   mData;
173            mutable Mutex   mLock;
174            bool            mSwitching;
175            DISALLOW_EVIL_CONSTRUCTORS(CallbackData);
176        };
177
178    }; // AudioOutput
179
180
181    class AudioCache : public MediaPlayerBase::AudioSink
182    {
183    public:
184                                AudioCache(const sp<IMemoryHeap>& heap);
185        virtual                 ~AudioCache() {}
186
187        virtual bool            ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); }
188        virtual bool            realtime() const { return false; }
189        virtual ssize_t         bufferSize() const { return frameSize() * mFrameCount; }
190        virtual ssize_t         frameCount() const { return mFrameCount; }
191        virtual ssize_t         channelCount() const { return (ssize_t)mChannelCount; }
192        virtual ssize_t         frameSize() const { return ssize_t(mChannelCount * ((mFormat == AUDIO_FORMAT_PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); }
193        virtual uint32_t        latency() const;
194        virtual float           msecsPerFrame() const;
195        virtual status_t        getPosition(uint32_t *position) const;
196        virtual status_t        getFramesWritten(uint32_t *frameswritten) const;
197        virtual int             getSessionId() const;
198
199        virtual status_t        open(
200                uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
201                audio_format_t format, int bufferCount = 1,
202                AudioCallback cb = NULL, void *cookie = NULL,
203                audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
204                const audio_offload_info_t *offloadInfo = NULL);
205
206        virtual status_t        start();
207        virtual ssize_t         write(const void* buffer, size_t size);
208        virtual void            stop();
209        virtual void            flush() {}
210        virtual void            pause() {}
211        virtual void            close() {}
212                void            setAudioStreamType(audio_stream_type_t streamType) {}
213                // stream type is not used for AudioCache
214        virtual audio_stream_type_t getAudioStreamType() const { return AUDIO_STREAM_DEFAULT; }
215
216                void            setVolume(float left, float right) {}
217        virtual status_t        setPlaybackRatePermille(int32_t ratePermille) { return INVALID_OPERATION; }
218                uint32_t        sampleRate() const { return mSampleRate; }
219                audio_format_t  format() const { return mFormat; }
220                size_t          size() const { return mSize; }
221                status_t        wait();
222
223                sp<IMemoryHeap> getHeap() const { return mHeap; }
224
225        static  void            notify(void* cookie, int msg,
226                                       int ext1, int ext2, const Parcel *obj);
227        virtual status_t        dump(int fd, const Vector<String16>& args) const;
228
229    private:
230                                AudioCache();
231
232        Mutex               mLock;
233        Condition           mSignal;
234        sp<IMemoryHeap>     mHeap;
235        float               mMsecsPerFrame;
236        uint16_t            mChannelCount;
237        audio_format_t      mFormat;
238        ssize_t             mFrameCount;
239        uint32_t            mSampleRate;
240        uint32_t            mSize;
241        int                 mError;
242        bool                mCommandComplete;
243
244        sp<Thread>          mCallbackThread;
245    }; // AudioCache
246
247public:
248    static  void                instantiate();
249
250    // IMediaPlayerService interface
251    virtual sp<IMediaRecorder>  createMediaRecorder();
252    void    removeMediaRecorderClient(wp<MediaRecorderClient> client);
253    virtual sp<IMediaMetadataRetriever> createMetadataRetriever();
254
255    virtual sp<IMediaPlayer>    create(const sp<IMediaPlayerClient>& client, int audioSessionId);
256
257    virtual status_t            decode(const char* url, uint32_t *pSampleRate, int* pNumChannels,
258                                       audio_format_t* pFormat,
259                                       const sp<IMemoryHeap>& heap, size_t *pSize);
260    virtual status_t            decode(int fd, int64_t offset, int64_t length,
261                                       uint32_t *pSampleRate, int* pNumChannels,
262                                       audio_format_t* pFormat,
263                                       const sp<IMemoryHeap>& heap, size_t *pSize);
264    virtual sp<IOMX>            getOMX();
265    virtual sp<ICrypto>         makeCrypto();
266    virtual sp<IDrm>            makeDrm();
267    virtual sp<IHDCP>           makeHDCP(bool createEncryptionModule);
268
269    virtual sp<IRemoteDisplay> listenForRemoteDisplay(const sp<IRemoteDisplayClient>& client,
270            const String8& iface);
271    virtual status_t            dump(int fd, const Vector<String16>& args);
272
273    virtual status_t        updateProxyConfig(
274            const char *host, int32_t port, const char *exclusionList);
275
276            void                removeClient(wp<Client> client);
277
278    // For battery usage tracking purpose
279    struct BatteryUsageInfo {
280        // how many streams are being played by one UID
281        int     refCount;
282        // a temp variable to store the duration(ms) of audio codecs
283        // when we start a audio codec, we minus the system time from audioLastTime
284        // when we pause it, we add the system time back to the audioLastTime
285        // so after the pause, audioLastTime = pause time - start time
286        // if multiple audio streams are played (or recorded), then audioLastTime
287        // = the total playing time of all the streams
288        int32_t audioLastTime;
289        // when all the audio streams are being paused, we assign audioLastTime to
290        // this variable, so this value could be provided to the battery app
291        // in the next pullBatteryData call
292        int32_t audioTotalTime;
293
294        int32_t videoLastTime;
295        int32_t videoTotalTime;
296    };
297    KeyedVector<int, BatteryUsageInfo>    mBatteryData;
298
299    enum {
300        SPEAKER,
301        OTHER_AUDIO_DEVICE,
302        SPEAKER_AND_OTHER,
303        NUM_AUDIO_DEVICES
304    };
305
306    struct BatteryAudioFlingerUsageInfo {
307        int refCount; // how many audio streams are being played
308        int deviceOn[NUM_AUDIO_DEVICES]; // whether the device is currently used
309        int32_t lastTime[NUM_AUDIO_DEVICES]; // in ms
310        // totalTime[]: total time of audio output devices usage
311        int32_t totalTime[NUM_AUDIO_DEVICES]; // in ms
312    };
313
314    // This varialble is used to record the usage of audio output device
315    // for battery app
316    BatteryAudioFlingerUsageInfo mBatteryAudio;
317
318    // Collect info of the codec usage from media player and media recorder
319    virtual void                addBatteryData(uint32_t params);
320    // API for the Battery app to pull the data of codecs usage
321    virtual status_t            pullBatteryData(Parcel* reply);
322private:
323
324    class Client : public BnMediaPlayer {
325        // IMediaPlayer interface
326        virtual void            disconnect();
327        virtual status_t        setVideoSurfaceTexture(
328                                        const sp<IGraphicBufferProducer>& bufferProducer);
329        virtual status_t        prepareAsync();
330        virtual status_t        start();
331        virtual status_t        stop();
332        virtual status_t        pause();
333        virtual status_t        isPlaying(bool* state);
334        virtual status_t        seekTo(int msec);
335        virtual status_t        getCurrentPosition(int* msec);
336        virtual status_t        getDuration(int* msec);
337        virtual status_t        reset();
338        virtual status_t        setAudioStreamType(audio_stream_type_t type);
339        virtual status_t        setLooping(int loop);
340        virtual status_t        setVolume(float leftVolume, float rightVolume);
341        virtual status_t        invoke(const Parcel& request, Parcel *reply);
342        virtual status_t        setMetadataFilter(const Parcel& filter);
343        virtual status_t        getMetadata(bool update_only,
344                                            bool apply_filter,
345                                            Parcel *reply);
346        virtual status_t        setAuxEffectSendLevel(float level);
347        virtual status_t        attachAuxEffect(int effectId);
348        virtual status_t        setParameter(int key, const Parcel &request);
349        virtual status_t        getParameter(int key, Parcel *reply);
350        virtual status_t        setRetransmitEndpoint(const struct sockaddr_in* endpoint);
351        virtual status_t        getRetransmitEndpoint(struct sockaddr_in* endpoint);
352        virtual status_t        setNextPlayer(const sp<IMediaPlayer>& player);
353
354        sp<MediaPlayerBase>     createPlayer(player_type playerType);
355
356        virtual status_t        setDataSource(
357                        const char *url,
358                        const KeyedVector<String8, String8> *headers);
359
360        virtual status_t        setDataSource(int fd, int64_t offset, int64_t length);
361
362        virtual status_t        setDataSource(const sp<IStreamSource> &source);
363
364        sp<MediaPlayerBase>     setDataSource_pre(player_type playerType);
365        void                    setDataSource_post(const sp<MediaPlayerBase>& p,
366                                                   status_t status);
367
368        static  void            notify(void* cookie, int msg,
369                                       int ext1, int ext2, const Parcel *obj);
370
371                pid_t           pid() const { return mPid; }
372        virtual status_t        dump(int fd, const Vector<String16>& args) const;
373
374                int             getAudioSessionId() { return mAudioSessionId; }
375
376    private:
377        friend class MediaPlayerService;
378                                Client( const sp<MediaPlayerService>& service,
379                                        pid_t pid,
380                                        int32_t connId,
381                                        const sp<IMediaPlayerClient>& client,
382                                        int audioSessionId,
383                                        uid_t uid);
384                                Client();
385        virtual                 ~Client();
386
387                void            deletePlayer();
388
389        sp<MediaPlayerBase>     getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; }
390
391
392
393        // @param type Of the metadata to be tested.
394        // @return true if the metadata should be dropped according to
395        //              the filters.
396        bool shouldDropMetadata(media::Metadata::Type type) const;
397
398        // Add a new element to the set of metadata updated. Noop if
399        // the element exists already.
400        // @param type Of the metadata to be recorded.
401        void addNewMetadataUpdate(media::Metadata::Type type);
402
403        // Disconnect from the currently connected ANativeWindow.
404        void disconnectNativeWindow();
405
406        mutable     Mutex                       mLock;
407                    sp<MediaPlayerBase>         mPlayer;
408                    sp<MediaPlayerService>      mService;
409                    sp<IMediaPlayerClient>      mClient;
410                    sp<AudioOutput>             mAudioOutput;
411                    pid_t                       mPid;
412                    status_t                    mStatus;
413                    bool                        mLoop;
414                    int32_t                     mConnId;
415                    int                         mAudioSessionId;
416                    uid_t                       mUID;
417                    sp<ANativeWindow>           mConnectedWindow;
418                    sp<IBinder>                 mConnectedWindowBinder;
419                    struct sockaddr_in          mRetransmitEndpoint;
420                    bool                        mRetransmitEndpointValid;
421                    sp<Client>                  mNextClient;
422
423        // Metadata filters.
424        media::Metadata::Filter mMetadataAllow;  // protected by mLock
425        media::Metadata::Filter mMetadataDrop;  // protected by mLock
426
427        // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE
428        // notification we try to update mMetadataUpdated which is a
429        // set: no duplicate.
430        // getMetadata clears this set.
431        media::Metadata::Filter mMetadataUpdated;  // protected by mLock
432
433#if CALLBACK_ANTAGONIZER
434                    Antagonizer*                mAntagonizer;
435#endif
436    }; // Client
437
438// ----------------------------------------------------------------------------
439
440                            MediaPlayerService();
441    virtual                 ~MediaPlayerService();
442
443    mutable     Mutex                       mLock;
444                SortedVector< wp<Client> >  mClients;
445                SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients;
446                int32_t                     mNextConnId;
447                sp<IOMX>                    mOMX;
448                sp<ICrypto>                 mCrypto;
449};
450
451// ----------------------------------------------------------------------------
452
453}; // namespace android
454
455#endif // ANDROID_MEDIAPLAYERSERVICE_H
456