MediaPlayerService.h revision 179652ee2a508361df1aa18e99000373886f0816 
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(int 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 status_t        getFramesWritten(uint32_t *frameswritten) const;
92        virtual int             getSessionId() const;
93        virtual uint32_t        getSampleRate() const;
94
95        virtual status_t        open(
96                uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
97                audio_format_t format, int bufferCount,
98                AudioCallback cb, void *cookie,
99                audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
100                const audio_offload_info_t *offloadInfo = NULL,
101                bool doNotReconnect = false,
102                uint32_t suggestedFrameCount = 0);
103
104        virtual status_t        start();
105        virtual ssize_t         write(const void* buffer, size_t size, bool blocking = true);
106        virtual void            stop();
107        virtual void            flush();
108        virtual void            pause();
109        virtual void            close();
110                void            setAudioStreamType(audio_stream_type_t streamType) {
111                                                                        mStreamType = streamType; }
112        virtual audio_stream_type_t getAudioStreamType() const { return mStreamType; }
113                void            setAudioAttributes(const audio_attributes_t * attributes);
114
115                void            setVolume(float left, float right);
116        virtual status_t        setPlaybackRate(const AudioPlaybackRate& rate);
117        virtual status_t        getPlaybackRate(AudioPlaybackRate* rate /* nonnull */);
118
119                status_t        setAuxEffectSendLevel(float level);
120                status_t        attachAuxEffect(int effectId);
121        virtual status_t        dump(int fd, const Vector<String16>& args) const;
122
123        static bool             isOnEmulator();
124        static int              getMinBufferCount();
125                void            setNextOutput(const sp<AudioOutput>& nextOutput);
126                void            switchToNextOutput();
127        virtual bool            needsTrailingPadding() { return mNextOutput == NULL; }
128        virtual status_t        setParameters(const String8& keyValuePairs);
129        virtual String8         getParameters(const String8& keys);
130
131    private:
132        static void             setMinBufferCount();
133        static void             CallbackWrapper(
134                int event, void *me, void *info);
135               void             deleteRecycledTrack();
136
137        sp<AudioTrack>          mTrack;
138        sp<AudioTrack>          mRecycledTrack;
139        sp<AudioOutput>         mNextOutput;
140        AudioCallback           mCallback;
141        void *                  mCallbackCookie;
142        CallbackData *          mCallbackData;
143        uint64_t                mBytesWritten;
144        audio_stream_type_t     mStreamType;
145        const audio_attributes_t *mAttributes;
146        float                   mLeftVolume;
147        float                   mRightVolume;
148        AudioPlaybackRate       mPlaybackRate;
149        uint32_t                mSampleRateHz; // sample rate of the content, as set in open()
150        float                   mMsecsPerFrame;
151        int                     mSessionId;
152        int                     mUid;
153        int                     mPid;
154        float                   mSendLevel;
155        int                     mAuxEffectId;
156        static bool             mIsOnEmulator;
157        static int              mMinBufferCount;  // 12 for emulator; otherwise 4
158        audio_output_flags_t    mFlags;
159
160        // CallbackData is what is passed to the AudioTrack as the "user" data.
161        // We need to be able to target this to a different Output on the fly,
162        // so we can't use the Output itself for this.
163        class CallbackData {
164        public:
165            CallbackData(AudioOutput *cookie) {
166                mData = cookie;
167                mSwitching = false;
168            }
169            AudioOutput *   getOutput() { return mData;}
170            void            setOutput(AudioOutput* newcookie) { mData = newcookie; }
171            // lock/unlock are used by the callback before accessing the payload of this object
172            void            lock() { mLock.lock(); }
173            void            unlock() { mLock.unlock(); }
174            // beginTrackSwitch/endTrackSwitch are used when this object is being handed over
175            // to the next sink.
176            void            beginTrackSwitch() { mLock.lock(); mSwitching = true; }
177            void            endTrackSwitch() {
178                if (mSwitching) {
179                    mLock.unlock();
180                }
181                mSwitching = false;
182            }
183        private:
184            AudioOutput *   mData;
185            mutable Mutex   mLock;
186            bool            mSwitching;
187            DISALLOW_EVIL_CONSTRUCTORS(CallbackData);
188        };
189
190    }; // AudioOutput
191
192
193public:
194    static  void                instantiate();
195
196    // IMediaPlayerService interface
197    virtual sp<IMediaRecorder>  createMediaRecorder(const String16 &opPackageName);
198    void    removeMediaRecorderClient(wp<MediaRecorderClient> client);
199    virtual sp<IMediaMetadataRetriever> createMetadataRetriever();
200
201    virtual sp<IMediaPlayer>    create(const sp<IMediaPlayerClient>& client, int audioSessionId);
202
203    virtual sp<IMediaCodecList> getCodecList() const;
204    virtual sp<IOMX>            getOMX();
205    virtual sp<ICrypto>         makeCrypto();
206    virtual sp<IDrm>            makeDrm();
207    virtual sp<IHDCP>           makeHDCP(bool createEncryptionModule);
208
209    virtual sp<IRemoteDisplay> listenForRemoteDisplay(const String16 &opPackageName,
210            const sp<IRemoteDisplayClient>& client, const String8& iface);
211    virtual status_t            dump(int fd, const Vector<String16>& args);
212
213            void                removeClient(wp<Client> client);
214
215    // For battery usage tracking purpose
216    struct BatteryUsageInfo {
217        // how many streams are being played by one UID
218        int     refCount;
219        // a temp variable to store the duration(ms) of audio codecs
220        // when we start a audio codec, we minus the system time from audioLastTime
221        // when we pause it, we add the system time back to the audioLastTime
222        // so after the pause, audioLastTime = pause time - start time
223        // if multiple audio streams are played (or recorded), then audioLastTime
224        // = the total playing time of all the streams
225        int32_t audioLastTime;
226        // when all the audio streams are being paused, we assign audioLastTime to
227        // this variable, so this value could be provided to the battery app
228        // in the next pullBatteryData call
229        int32_t audioTotalTime;
230
231        int32_t videoLastTime;
232        int32_t videoTotalTime;
233    };
234    KeyedVector<int, BatteryUsageInfo>    mBatteryData;
235
236    enum {
237        SPEAKER,
238        OTHER_AUDIO_DEVICE,
239        SPEAKER_AND_OTHER,
240        NUM_AUDIO_DEVICES
241    };
242
243    struct BatteryAudioFlingerUsageInfo {
244        int refCount; // how many audio streams are being played
245        int deviceOn[NUM_AUDIO_DEVICES]; // whether the device is currently used
246        int32_t lastTime[NUM_AUDIO_DEVICES]; // in ms
247        // totalTime[]: total time of audio output devices usage
248        int32_t totalTime[NUM_AUDIO_DEVICES]; // in ms
249    };
250
251    // This varialble is used to record the usage of audio output device
252    // for battery app
253    BatteryAudioFlingerUsageInfo mBatteryAudio;
254
255    // Collect info of the codec usage from media player and media recorder
256    virtual void                addBatteryData(uint32_t params);
257    // API for the Battery app to pull the data of codecs usage
258    virtual status_t            pullBatteryData(Parcel* reply);
259private:
260
261    class Client : public BnMediaPlayer {
262        // IMediaPlayer interface
263        virtual void            disconnect();
264        virtual status_t        setVideoSurfaceTexture(
265                                        const sp<IGraphicBufferProducer>& bufferProducer);
266        virtual status_t        prepareAsync();
267        virtual status_t        start();
268        virtual status_t        stop();
269        virtual status_t        pause();
270        virtual status_t        isPlaying(bool* state);
271        virtual status_t        setPlaybackSettings(const AudioPlaybackRate& rate);
272        virtual status_t        getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */);
273        virtual status_t        setSyncSettings(const AVSyncSettings& rate, float videoFpsHint);
274        virtual status_t        getSyncSettings(AVSyncSettings* rate /* nonnull */,
275                                                float* videoFps /* nonnull */);
276        virtual status_t        seekTo(int msec);
277        virtual status_t        getCurrentPosition(int* msec);
278        virtual status_t        getDuration(int* msec);
279        virtual status_t        reset();
280        virtual status_t        setAudioStreamType(audio_stream_type_t type);
281        virtual status_t        setLooping(int loop);
282        virtual status_t        setVolume(float leftVolume, float rightVolume);
283        virtual status_t        invoke(const Parcel& request, Parcel *reply);
284        virtual status_t        setMetadataFilter(const Parcel& filter);
285        virtual status_t        getMetadata(bool update_only,
286                                            bool apply_filter,
287                                            Parcel *reply);
288        virtual status_t        setAuxEffectSendLevel(float level);
289        virtual status_t        attachAuxEffect(int effectId);
290        virtual status_t        setParameter(int key, const Parcel &request);
291        virtual status_t        getParameter(int key, Parcel *reply);
292        virtual status_t        setRetransmitEndpoint(const struct sockaddr_in* endpoint);
293        virtual status_t        getRetransmitEndpoint(struct sockaddr_in* endpoint);
294        virtual status_t        setNextPlayer(const sp<IMediaPlayer>& player);
295
296        sp<MediaPlayerBase>     createPlayer(player_type playerType);
297
298        virtual status_t        setDataSource(
299                        const sp<IMediaHTTPService> &httpService,
300                        const char *url,
301                        const KeyedVector<String8, String8> *headers);
302
303        virtual status_t        setDataSource(int fd, int64_t offset, int64_t length);
304
305        virtual status_t        setDataSource(const sp<IStreamSource> &source);
306        virtual status_t        setDataSource(const sp<IDataSource> &source);
307
308
309        sp<MediaPlayerBase>     setDataSource_pre(player_type playerType);
310        void                    setDataSource_post(const sp<MediaPlayerBase>& p,
311                                                   status_t status);
312
313        static  void            notify(void* cookie, int msg,
314                                       int ext1, int ext2, const Parcel *obj);
315
316                pid_t           pid() const { return mPid; }
317        virtual status_t        dump(int fd, const Vector<String16>& args);
318
319                int             getAudioSessionId() { return mAudioSessionId; }
320
321    private:
322        friend class MediaPlayerService;
323                                Client( const sp<MediaPlayerService>& service,
324                                        pid_t pid,
325                                        int32_t connId,
326                                        const sp<IMediaPlayerClient>& client,
327                                        int audioSessionId,
328                                        uid_t uid);
329                                Client();
330        virtual                 ~Client();
331
332                void            deletePlayer();
333
334        sp<MediaPlayerBase>     getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; }
335
336
337
338        // @param type Of the metadata to be tested.
339        // @return true if the metadata should be dropped according to
340        //              the filters.
341        bool shouldDropMetadata(media::Metadata::Type type) const;
342
343        // Add a new element to the set of metadata updated. Noop if
344        // the element exists already.
345        // @param type Of the metadata to be recorded.
346        void addNewMetadataUpdate(media::Metadata::Type type);
347
348        // Disconnect from the currently connected ANativeWindow.
349        void disconnectNativeWindow();
350
351        status_t setAudioAttributes_l(const Parcel &request);
352
353        mutable     Mutex                       mLock;
354                    sp<MediaPlayerBase>         mPlayer;
355                    sp<MediaPlayerService>      mService;
356                    sp<IMediaPlayerClient>      mClient;
357                    sp<AudioOutput>             mAudioOutput;
358                    pid_t                       mPid;
359                    status_t                    mStatus;
360                    bool                        mLoop;
361                    int32_t                     mConnId;
362                    int                         mAudioSessionId;
363                    audio_attributes_t *        mAudioAttributes;
364                    uid_t                       mUID;
365                    sp<ANativeWindow>           mConnectedWindow;
366                    sp<IBinder>                 mConnectedWindowBinder;
367                    struct sockaddr_in          mRetransmitEndpoint;
368                    bool                        mRetransmitEndpointValid;
369                    sp<Client>                  mNextClient;
370
371        // Metadata filters.
372        media::Metadata::Filter mMetadataAllow;  // protected by mLock
373        media::Metadata::Filter mMetadataDrop;  // protected by mLock
374
375        // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE
376        // notification we try to update mMetadataUpdated which is a
377        // set: no duplicate.
378        // getMetadata clears this set.
379        media::Metadata::Filter mMetadataUpdated;  // protected by mLock
380
381#if CALLBACK_ANTAGONIZER
382                    Antagonizer*                mAntagonizer;
383#endif
384    }; // Client
385
386// ----------------------------------------------------------------------------
387
388                            MediaPlayerService();
389    virtual                 ~MediaPlayerService();
390
391    mutable     Mutex                       mLock;
392                SortedVector< wp<Client> >  mClients;
393                SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients;
394                int32_t                     mNextConnId;
395                sp<IOMX>                    mOMX;
396                sp<ICrypto>                 mCrypto;
397};
398
399// ----------------------------------------------------------------------------
400
401}; // namespace android
402
403#endif // ANDROID_MEDIAPLAYERSERVICE_H
404