AudioFlinger.h revision 39e94f8f723d445447fdee0822291e664b631f60 
1/* //device/include/server/AudioFlinger/AudioFlinger.h
2**
3** Copyright 2007, 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_AUDIO_FLINGER_H
19#define ANDROID_AUDIO_FLINGER_H
20
21#include <stdint.h>
22#include <sys/types.h>
23#include <limits.h>
24
25#include <media/IAudioFlinger.h>
26#include <media/IAudioFlingerClient.h>
27#include <media/IAudioTrack.h>
28#include <media/IAudioRecord.h>
29#include <media/AudioTrack.h>
30
31#include <utils/Atomic.h>
32#include <utils/Errors.h>
33#include <utils/threads.h>
34#include <utils/SortedVector.h>
35#include <utils/Vector.h>
36
37#include <binder/BinderService.h>
38#include <binder/MemoryDealer.h>
39
40#include <hardware_legacy/AudioHardwareInterface.h>
41
42#include "AudioBufferProvider.h"
43
44namespace android {
45
46class audio_track_cblk_t;
47class effect_param_cblk_t;
48class AudioMixer;
49class AudioBuffer;
50class AudioResampler;
51
52
53// ----------------------------------------------------------------------------
54
55#define LIKELY( exp )       (__builtin_expect( (exp) != 0, true  ))
56#define UNLIKELY( exp )     (__builtin_expect( (exp) != 0, false ))
57
58
59// ----------------------------------------------------------------------------
60
61static const nsecs_t kStandbyTimeInNsecs = seconds(3);
62
63class AudioFlinger :
64    public BinderService<AudioFlinger>,
65    public BnAudioFlinger
66{
67    friend class BinderService<AudioFlinger>;
68public:
69    static char const* getServiceName() { return "media.audio_flinger"; }
70
71    virtual     status_t    dump(int fd, const Vector<String16>& args);
72
73    // IAudioFlinger interface
74    virtual sp<IAudioTrack> createTrack(
75                                pid_t pid,
76                                int streamType,
77                                uint32_t sampleRate,
78                                int format,
79                                int channelCount,
80                                int frameCount,
81                                uint32_t flags,
82                                const sp<IMemory>& sharedBuffer,
83                                int output,
84                                int *sessionId,
85                                status_t *status);
86
87    virtual     uint32_t    sampleRate(int output) const;
88    virtual     int         channelCount(int output) const;
89    virtual     int         format(int output) const;
90    virtual     size_t      frameCount(int output) const;
91    virtual     uint32_t    latency(int output) const;
92
93    virtual     status_t    setMasterVolume(float value);
94    virtual     status_t    setMasterMute(bool muted);
95
96    virtual     float       masterVolume() const;
97    virtual     bool        masterMute() const;
98
99    virtual     status_t    setStreamVolume(int stream, float value, int output);
100    virtual     status_t    setStreamMute(int stream, bool muted);
101
102    virtual     float       streamVolume(int stream, int output) const;
103    virtual     bool        streamMute(int stream) const;
104
105    virtual     status_t    setMode(int mode);
106
107    virtual     status_t    setMicMute(bool state);
108    virtual     bool        getMicMute() const;
109
110    virtual     bool        isStreamActive(int stream) const;
111
112    virtual     status_t    setParameters(int ioHandle, const String8& keyValuePairs);
113    virtual     String8     getParameters(int ioHandle, const String8& keys);
114
115    virtual     void        registerClient(const sp<IAudioFlingerClient>& client);
116
117    virtual     size_t      getInputBufferSize(uint32_t sampleRate, int format, int channelCount);
118    virtual     unsigned int  getInputFramesLost(int ioHandle);
119
120    virtual int openOutput(uint32_t *pDevices,
121                                    uint32_t *pSamplingRate,
122                                    uint32_t *pFormat,
123                                    uint32_t *pChannels,
124                                    uint32_t *pLatencyMs,
125                                    uint32_t flags);
126
127    virtual int openDuplicateOutput(int output1, int output2);
128
129    virtual status_t closeOutput(int output);
130
131    virtual status_t suspendOutput(int output);
132
133    virtual status_t restoreOutput(int output);
134
135    virtual int openInput(uint32_t *pDevices,
136                            uint32_t *pSamplingRate,
137                            uint32_t *pFormat,
138                            uint32_t *pChannels,
139                            uint32_t acoustics);
140
141    virtual status_t closeInput(int input);
142
143    virtual status_t setStreamOutput(uint32_t stream, int output);
144
145    virtual status_t setVoiceVolume(float volume);
146
147    virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output);
148
149    virtual int newAudioSessionId();
150
151    virtual status_t loadEffectLibrary(const char *libPath, int *handle);
152
153    virtual status_t unloadEffectLibrary(int handle);
154
155    virtual status_t queryNumberEffects(uint32_t *numEffects);
156
157    virtual status_t queryEffect(uint32_t index, effect_descriptor_t *descriptor);
158
159    virtual status_t getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor);
160
161    virtual sp<IEffect> createEffect(pid_t pid,
162                        effect_descriptor_t *pDesc,
163                        const sp<IEffectClient>& effectClient,
164                        int32_t priority,
165                        int output,
166                        int sessionId,
167                        status_t *status,
168                        int *id,
169                        int *enabled);
170
171    virtual status_t moveEffects(int session, int srcOutput, int dstOutput);
172
173    enum hardware_call_state {
174        AUDIO_HW_IDLE = 0,
175        AUDIO_HW_INIT,
176        AUDIO_HW_OUTPUT_OPEN,
177        AUDIO_HW_OUTPUT_CLOSE,
178        AUDIO_HW_INPUT_OPEN,
179        AUDIO_HW_INPUT_CLOSE,
180        AUDIO_HW_STANDBY,
181        AUDIO_HW_SET_MASTER_VOLUME,
182        AUDIO_HW_GET_ROUTING,
183        AUDIO_HW_SET_ROUTING,
184        AUDIO_HW_GET_MODE,
185        AUDIO_HW_SET_MODE,
186        AUDIO_HW_GET_MIC_MUTE,
187        AUDIO_HW_SET_MIC_MUTE,
188        AUDIO_SET_VOICE_VOLUME,
189        AUDIO_SET_PARAMETER,
190    };
191
192    // record interface
193    virtual sp<IAudioRecord> openRecord(
194                                pid_t pid,
195                                int input,
196                                uint32_t sampleRate,
197                                int format,
198                                int channelCount,
199                                int frameCount,
200                                uint32_t flags,
201                                int *sessionId,
202                                status_t *status);
203
204    virtual     status_t    onTransact(
205                                uint32_t code,
206                                const Parcel& data,
207                                Parcel* reply,
208                                uint32_t flags);
209
210                uint32_t    getMode() { return mMode; }
211
212private:
213                            AudioFlinger();
214    virtual                 ~AudioFlinger();
215
216
217    // Internal dump utilites.
218    status_t dumpPermissionDenial(int fd, const Vector<String16>& args);
219    status_t dumpClients(int fd, const Vector<String16>& args);
220    status_t dumpInternals(int fd, const Vector<String16>& args);
221
222    // --- Client ---
223    class Client : public RefBase {
224    public:
225                            Client(const sp<AudioFlinger>& audioFlinger, pid_t pid);
226        virtual             ~Client();
227        const sp<MemoryDealer>&     heap() const;
228        pid_t               pid() const { return mPid; }
229        sp<AudioFlinger>    audioFlinger() { return mAudioFlinger; }
230
231    private:
232                            Client(const Client&);
233                            Client& operator = (const Client&);
234        sp<AudioFlinger>    mAudioFlinger;
235        sp<MemoryDealer>    mMemoryDealer;
236        pid_t               mPid;
237    };
238
239    // --- Notification Client ---
240    class NotificationClient : public IBinder::DeathRecipient {
241    public:
242                            NotificationClient(const sp<AudioFlinger>& audioFlinger,
243                                                const sp<IAudioFlingerClient>& client,
244                                                pid_t pid);
245        virtual             ~NotificationClient();
246
247                sp<IAudioFlingerClient>    client() { return mClient; }
248
249                // IBinder::DeathRecipient
250                virtual     void        binderDied(const wp<IBinder>& who);
251
252    private:
253                            NotificationClient(const NotificationClient&);
254                            NotificationClient& operator = (const NotificationClient&);
255
256        sp<AudioFlinger>        mAudioFlinger;
257        pid_t                   mPid;
258        sp<IAudioFlingerClient> mClient;
259    };
260
261    class TrackHandle;
262    class RecordHandle;
263    class RecordThread;
264    class PlaybackThread;
265    class MixerThread;
266    class DirectOutputThread;
267    class DuplicatingThread;
268    class Track;
269    class RecordTrack;
270    class EffectModule;
271    class EffectHandle;
272    class EffectChain;
273
274    class ThreadBase : public Thread {
275    public:
276        ThreadBase (const sp<AudioFlinger>& audioFlinger, int id);
277        virtual             ~ThreadBase();
278
279        status_t dumpBase(int fd, const Vector<String16>& args);
280
281        // base for record and playback
282        class TrackBase : public AudioBufferProvider, public RefBase {
283
284        public:
285            enum track_state {
286                IDLE,
287                TERMINATED,
288                STOPPED,
289                RESUMING,
290                ACTIVE,
291                PAUSING,
292                PAUSED
293            };
294
295            enum track_flags {
296                STEPSERVER_FAILED = 0x01, //  StepServer could not acquire cblk->lock mutex
297                SYSTEM_FLAGS_MASK = 0x0000ffffUL,
298                // The upper 16 bits are used for track-specific flags.
299            };
300
301                                TrackBase(const wp<ThreadBase>& thread,
302                                        const sp<Client>& client,
303                                        uint32_t sampleRate,
304                                        int format,
305                                        int channelCount,
306                                        int frameCount,
307                                        uint32_t flags,
308                                        const sp<IMemory>& sharedBuffer,
309                                        int sessionId);
310                                ~TrackBase();
311
312            virtual status_t    start() = 0;
313            virtual void        stop() = 0;
314                    sp<IMemory> getCblk() const;
315                    audio_track_cblk_t* cblk() const { return mCblk; }
316                    int         sessionId() { return mSessionId; }
317
318        protected:
319            friend class ThreadBase;
320            friend class RecordHandle;
321            friend class PlaybackThread;
322            friend class RecordThread;
323            friend class MixerThread;
324            friend class DirectOutputThread;
325
326                                TrackBase(const TrackBase&);
327                                TrackBase& operator = (const TrackBase&);
328
329            virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer) = 0;
330            virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer);
331
332            int format() const {
333                return mFormat;
334            }
335
336            int channelCount() const ;
337
338            int sampleRate() const;
339
340            void* getBuffer(uint32_t offset, uint32_t frames) const;
341
342            bool isStopped() const {
343                return mState == STOPPED;
344            }
345
346            bool isTerminated() const {
347                return mState == TERMINATED;
348            }
349
350            bool step();
351            void reset();
352
353            wp<ThreadBase>      mThread;
354            sp<Client>          mClient;
355            sp<IMemory>         mCblkMemory;
356            audio_track_cblk_t* mCblk;
357            void*               mBuffer;
358            void*               mBufferEnd;
359            uint32_t            mFrameCount;
360            // we don't really need a lock for these
361            int                 mState;
362            int                 mClientTid;
363            uint8_t             mFormat;
364            uint32_t            mFlags;
365            int                 mSessionId;
366        };
367
368        class ConfigEvent {
369        public:
370            ConfigEvent() : mEvent(0), mParam(0) {}
371
372            int mEvent;
373            int mParam;
374        };
375
376                    uint32_t    sampleRate() const;
377                    int         channelCount() const;
378                    int         format() const;
379                    size_t      frameCount() const;
380                    void        wakeUp()    { mWaitWorkCV.broadcast(); }
381                    void        exit();
382        virtual     bool        checkForNewParameters_l() = 0;
383        virtual     status_t    setParameters(const String8& keyValuePairs);
384        virtual     String8     getParameters(const String8& keys) = 0;
385        virtual     void        audioConfigChanged_l(int event, int param = 0) = 0;
386                    void        sendConfigEvent(int event, int param = 0);
387                    void        sendConfigEvent_l(int event, int param = 0);
388                    void        processConfigEvents();
389                    int         id() const { return mId;}
390                    bool        standby() { return mStandby; }
391
392        mutable     Mutex                   mLock;
393
394    protected:
395
396        friend class Track;
397        friend class TrackBase;
398        friend class PlaybackThread;
399        friend class MixerThread;
400        friend class DirectOutputThread;
401        friend class DuplicatingThread;
402        friend class RecordThread;
403        friend class RecordTrack;
404
405                    Condition               mWaitWorkCV;
406                    sp<AudioFlinger>        mAudioFlinger;
407                    uint32_t                mSampleRate;
408                    size_t                  mFrameCount;
409                    uint32_t                mChannels;
410                    uint16_t                mChannelCount;
411                    uint16_t                mFrameSize;
412                    int                     mFormat;
413                    Condition               mParamCond;
414                    Vector<String8>         mNewParameters;
415                    status_t                mParamStatus;
416                    Vector<ConfigEvent *>   mConfigEvents;
417                    bool                    mStandby;
418                    int                     mId;
419                    bool                    mExiting;
420    };
421
422    // --- PlaybackThread ---
423    class PlaybackThread : public ThreadBase {
424    public:
425
426        enum type {
427            MIXER,
428            DIRECT,
429            DUPLICATING
430        };
431
432        enum mixer_state {
433            MIXER_IDLE,
434            MIXER_TRACKS_ENABLED,
435            MIXER_TRACKS_READY
436        };
437
438        // playback track
439        class Track : public TrackBase {
440        public:
441                                Track(  const wp<ThreadBase>& thread,
442                                        const sp<Client>& client,
443                                        int streamType,
444                                        uint32_t sampleRate,
445                                        int format,
446                                        int channelCount,
447                                        int frameCount,
448                                        const sp<IMemory>& sharedBuffer,
449                                        int sessionId);
450                                ~Track();
451
452                    void        dump(char* buffer, size_t size);
453            virtual status_t    start();
454            virtual void        stop();
455                    void        pause();
456
457                    void        flush();
458                    void        destroy();
459                    void        mute(bool);
460                    void        setVolume(float left, float right);
461                    int name() const {
462                        return mName;
463                    }
464
465                    int type() const {
466                        return mStreamType;
467                    }
468                    status_t    attachAuxEffect(int EffectId);
469                    void        setAuxBuffer(int EffectId, int32_t *buffer);
470                    int32_t     *auxBuffer() { return mAuxBuffer; }
471                    void        setMainBuffer(int16_t *buffer) { mMainBuffer = buffer; }
472                    int16_t     *mainBuffer() { return mMainBuffer; }
473                    int         auxEffectId() { return mAuxEffectId; }
474
475
476        protected:
477            friend class ThreadBase;
478            friend class AudioFlinger;
479            friend class TrackHandle;
480            friend class PlaybackThread;
481            friend class MixerThread;
482            friend class DirectOutputThread;
483
484                                Track(const Track&);
485                                Track& operator = (const Track&);
486
487            virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
488            bool isMuted() { return mMute; }
489            bool isPausing() const {
490                return mState == PAUSING;
491            }
492            bool isPaused() const {
493                return mState == PAUSED;
494            }
495            bool isReady() const;
496            void setPaused() { mState = PAUSED; }
497            void reset();
498
499            bool isOutputTrack() const {
500                return (mStreamType == AudioSystem::NUM_STREAM_TYPES);
501            }
502
503            // we don't really need a lock for these
504            float               mVolume[2];
505            volatile bool       mMute;
506            // FILLED state is used for suppressing volume ramp at begin of playing
507            enum {FS_FILLING, FS_FILLED, FS_ACTIVE};
508            mutable uint8_t     mFillingUpStatus;
509            int8_t              mRetryCount;
510            sp<IMemory>         mSharedBuffer;
511            bool                mResetDone;
512            int                 mStreamType;
513            int                 mName;
514            int16_t             *mMainBuffer;
515            int32_t             *mAuxBuffer;
516            int                 mAuxEffectId;
517        };  // end of Track
518
519
520        // playback track
521        class OutputTrack : public Track {
522        public:
523
524            class Buffer: public AudioBufferProvider::Buffer {
525            public:
526                int16_t *mBuffer;
527            };
528
529                                OutputTrack(  const wp<ThreadBase>& thread,
530                                        DuplicatingThread *sourceThread,
531                                        uint32_t sampleRate,
532                                        int format,
533                                        int channelCount,
534                                        int frameCount);
535                                ~OutputTrack();
536
537            virtual status_t    start();
538            virtual void        stop();
539                    bool        write(int16_t* data, uint32_t frames);
540                    bool        bufferQueueEmpty() { return (mBufferQueue.size() == 0) ? true : false; }
541                    bool        isActive() { return mActive; }
542            wp<ThreadBase>&     thread()  { return mThread; }
543
544        private:
545
546            status_t            obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs);
547            void                clearBufferQueue();
548
549            // Maximum number of pending buffers allocated by OutputTrack::write()
550            static const uint8_t kMaxOverFlowBuffers = 10;
551
552            Vector < Buffer* >          mBufferQueue;
553            AudioBufferProvider::Buffer mOutBuffer;
554            bool                        mActive;
555            DuplicatingThread*          mSourceThread;
556        };  // end of OutputTrack
557
558        PlaybackThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device);
559        virtual             ~PlaybackThread();
560
561        virtual     status_t    dump(int fd, const Vector<String16>& args);
562
563        // Thread virtuals
564        virtual     status_t    readyToRun();
565        virtual     void        onFirstRef();
566
567        virtual     uint32_t    latency() const;
568
569        virtual     status_t    setMasterVolume(float value);
570        virtual     status_t    setMasterMute(bool muted);
571
572        virtual     float       masterVolume() const;
573        virtual     bool        masterMute() const;
574
575        virtual     status_t    setStreamVolume(int stream, float value);
576        virtual     status_t    setStreamMute(int stream, bool muted);
577
578        virtual     float       streamVolume(int stream) const;
579        virtual     bool        streamMute(int stream) const;
580
581                    bool        isStreamActive(int stream) const;
582
583                    sp<Track>   createTrack_l(
584                                    const sp<AudioFlinger::Client>& client,
585                                    int streamType,
586                                    uint32_t sampleRate,
587                                    int format,
588                                    int channelCount,
589                                    int frameCount,
590                                    const sp<IMemory>& sharedBuffer,
591                                    int sessionId,
592                                    status_t *status);
593
594                    AudioStreamOut* getOutput() { return mOutput; }
595
596        virtual     int         type() const { return mType; }
597                    void        suspend() { mSuspended++; }
598                    void        restore() { if (mSuspended) mSuspended--; }
599                    bool        isSuspended() { return (mSuspended != 0); }
600        virtual     String8     getParameters(const String8& keys);
601        virtual     void        audioConfigChanged_l(int event, int param = 0);
602        virtual     status_t    getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames);
603                    int16_t     *mixBuffer() { return mMixBuffer; };
604
605                    sp<EffectHandle> createEffect_l(
606                                        const sp<AudioFlinger::Client>& client,
607                                        const sp<IEffectClient>& effectClient,
608                                        int32_t priority,
609                                        int sessionId,
610                                        effect_descriptor_t *desc,
611                                        int *enabled,
612                                        status_t *status);
613                    void disconnectEffect(const sp< EffectModule>& effect,
614                                          const wp<EffectHandle>& handle);
615
616                    // return values for hasAudioSession (bit field)
617                    enum effect_state {
618                        EFFECT_SESSION = 0x1,   // the audio session corresponds to at least one
619                                                // effect
620                        TRACK_SESSION = 0x2     // the audio session corresponds to at least one
621                                                // track
622                    };
623
624                    uint32_t hasAudioSession(int sessionId);
625                    sp<EffectChain> getEffectChain(int sessionId);
626                    sp<EffectChain> getEffectChain_l(int sessionId);
627                    status_t addEffectChain_l(const sp<EffectChain>& chain);
628                    size_t removeEffectChain_l(const sp<EffectChain>& chain);
629                    void lockEffectChains_l(Vector<sp <EffectChain> >& effectChains);
630                    void unlockEffectChains(Vector<sp <EffectChain> >& effectChains);
631
632                    sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId);
633                    void detachAuxEffect_l(int effectId);
634                    status_t attachAuxEffect(const sp<AudioFlinger::PlaybackThread::Track> track,
635                            int EffectId);
636                    status_t attachAuxEffect_l(const sp<AudioFlinger::PlaybackThread::Track> track,
637                            int EffectId);
638                    void setMode(uint32_t mode);
639
640                    status_t addEffect_l(const sp< EffectModule>& effect);
641                    void removeEffect_l(const sp< EffectModule>& effect);
642
643                    uint32_t getStrategyForSession_l(int sessionId);
644
645        struct  stream_type_t {
646            stream_type_t()
647                :   volume(1.0f),
648                    mute(false)
649            {
650            }
651            float       volume;
652            bool        mute;
653        };
654
655    protected:
656        int                             mType;
657        int16_t*                        mMixBuffer;
658        int                             mSuspended;
659        int                             mBytesWritten;
660        bool                            mMasterMute;
661        SortedVector< wp<Track> >       mActiveTracks;
662
663        virtual int             getTrackName_l() = 0;
664        virtual void            deleteTrackName_l(int name) = 0;
665        virtual uint32_t        activeSleepTimeUs() = 0;
666        virtual uint32_t        idleSleepTimeUs() = 0;
667
668    private:
669
670        friend class AudioFlinger;
671        friend class OutputTrack;
672        friend class Track;
673        friend class TrackBase;
674        friend class MixerThread;
675        friend class DirectOutputThread;
676        friend class DuplicatingThread;
677
678        PlaybackThread(const Client&);
679        PlaybackThread& operator = (const PlaybackThread&);
680
681        status_t    addTrack_l(const sp<Track>& track);
682        void        destroyTrack_l(const sp<Track>& track);
683
684        void        readOutputParameters();
685
686        uint32_t    device() { return mDevice; }
687
688        virtual status_t    dumpInternals(int fd, const Vector<String16>& args);
689        status_t    dumpTracks(int fd, const Vector<String16>& args);
690        status_t    dumpEffectChains(int fd, const Vector<String16>& args);
691
692        SortedVector< sp<Track> >       mTracks;
693        // mStreamTypes[] uses 1 additionnal stream type internally for the OutputTrack used by DuplicatingThread
694        stream_type_t                   mStreamTypes[AudioSystem::NUM_STREAM_TYPES + 1];
695        AudioStreamOut*                 mOutput;
696        float                           mMasterVolume;
697        nsecs_t                         mLastWriteTime;
698        int                             mNumWrites;
699        int                             mNumDelayedWrites;
700        bool                            mInWrite;
701        Vector< sp<EffectChain> >       mEffectChains;
702        uint32_t                        mDevice;
703    };
704
705    class MixerThread : public PlaybackThread {
706    public:
707        MixerThread (const sp<AudioFlinger>& audioFlinger,
708                     AudioStreamOut* output,
709                     int id,
710                     uint32_t device);
711        virtual             ~MixerThread();
712
713        // Thread virtuals
714        virtual     bool        threadLoop();
715
716                    void        invalidateTracks(int streamType);
717        virtual     bool        checkForNewParameters_l();
718        virtual     status_t    dumpInternals(int fd, const Vector<String16>& args);
719
720    protected:
721                    uint32_t    prepareTracks_l(const SortedVector< wp<Track> >& activeTracks,
722                                                Vector< sp<Track> > *tracksToRemove);
723        virtual     int         getTrackName_l();
724        virtual     void        deleteTrackName_l(int name);
725        virtual     uint32_t    activeSleepTimeUs();
726        virtual     uint32_t    idleSleepTimeUs();
727
728        AudioMixer*                     mAudioMixer;
729    };
730
731    class DirectOutputThread : public PlaybackThread {
732    public:
733
734        DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device);
735        ~DirectOutputThread();
736
737        // Thread virtuals
738        virtual     bool        threadLoop();
739
740        virtual     bool        checkForNewParameters_l();
741
742    protected:
743        virtual     int         getTrackName_l();
744        virtual     void        deleteTrackName_l(int name);
745        virtual     uint32_t    activeSleepTimeUs();
746        virtual     uint32_t    idleSleepTimeUs();
747
748    private:
749        void applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp);
750
751        float mLeftVolFloat;
752        float mRightVolFloat;
753        uint16_t mLeftVolShort;
754        uint16_t mRightVolShort;
755    };
756
757    class DuplicatingThread : public MixerThread {
758    public:
759        DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, int id);
760        ~DuplicatingThread();
761
762        // Thread virtuals
763        virtual     bool        threadLoop();
764                    void        addOutputTrack(MixerThread* thread);
765                    void        removeOutputTrack(MixerThread* thread);
766                    uint32_t    waitTimeMs() { return mWaitTimeMs; }
767    protected:
768        virtual     uint32_t    activeSleepTimeUs();
769
770    private:
771                    bool        outputsReady(SortedVector< sp<OutputTrack> > &outputTracks);
772                    void        updateWaitTime();
773
774        SortedVector < sp<OutputTrack> >  mOutputTracks;
775                    uint32_t    mWaitTimeMs;
776    };
777
778              PlaybackThread *checkPlaybackThread_l(int output) const;
779              MixerThread *checkMixerThread_l(int output) const;
780              RecordThread *checkRecordThread_l(int input) const;
781              float streamVolumeInternal(int stream) const { return mStreamTypes[stream].volume; }
782              void audioConfigChanged_l(int event, int ioHandle, void *param2);
783
784              int  nextUniqueId();
785              status_t moveEffectChain_l(int session,
786                                     AudioFlinger::PlaybackThread *srcThread,
787                                     AudioFlinger::PlaybackThread *dstThread,
788                                     bool reRegister);
789
790    friend class AudioBuffer;
791
792    class TrackHandle : public android::BnAudioTrack {
793    public:
794                            TrackHandle(const sp<PlaybackThread::Track>& track);
795        virtual             ~TrackHandle();
796        virtual status_t    start();
797        virtual void        stop();
798        virtual void        flush();
799        virtual void        mute(bool);
800        virtual void        pause();
801        virtual void        setVolume(float left, float right);
802        virtual sp<IMemory> getCblk() const;
803        virtual status_t    attachAuxEffect(int effectId);
804        virtual status_t onTransact(
805            uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
806    private:
807        sp<PlaybackThread::Track> mTrack;
808    };
809
810    friend class Client;
811    friend class PlaybackThread::Track;
812
813
814                void        removeClient_l(pid_t pid);
815                void        removeNotificationClient(pid_t pid);
816
817
818    // record thread
819    class RecordThread : public ThreadBase, public AudioBufferProvider
820    {
821    public:
822
823        // record track
824        class RecordTrack : public TrackBase {
825        public:
826                                RecordTrack(const wp<ThreadBase>& thread,
827                                        const sp<Client>& client,
828                                        uint32_t sampleRate,
829                                        int format,
830                                        int channelCount,
831                                        int frameCount,
832                                        uint32_t flags,
833                                        int sessionId);
834                                ~RecordTrack();
835
836            virtual status_t    start();
837            virtual void        stop();
838
839                    bool        overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; }
840                    bool        setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; }
841
842                    void        dump(char* buffer, size_t size);
843        private:
844            friend class AudioFlinger;
845            friend class RecordThread;
846
847                                RecordTrack(const RecordTrack&);
848                                RecordTrack& operator = (const RecordTrack&);
849
850            virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
851
852            bool                mOverflow;
853        };
854
855
856                RecordThread(const sp<AudioFlinger>& audioFlinger,
857                        AudioStreamIn *input,
858                        uint32_t sampleRate,
859                        uint32_t channels,
860                        int id);
861                ~RecordThread();
862
863        virtual bool        threadLoop();
864        virtual status_t    readyToRun() { return NO_ERROR; }
865        virtual void        onFirstRef();
866
867                status_t    start(RecordTrack* recordTrack);
868                void        stop(RecordTrack* recordTrack);
869                status_t    dump(int fd, const Vector<String16>& args);
870                AudioStreamIn* getInput() { return mInput; }
871
872        virtual status_t    getNextBuffer(AudioBufferProvider::Buffer* buffer);
873        virtual void        releaseBuffer(AudioBufferProvider::Buffer* buffer);
874        virtual bool        checkForNewParameters_l();
875        virtual String8     getParameters(const String8& keys);
876        virtual void        audioConfigChanged_l(int event, int param = 0);
877                void        readInputParameters();
878        virtual unsigned int  getInputFramesLost();
879
880    private:
881                RecordThread();
882                AudioStreamIn                       *mInput;
883                sp<RecordTrack>                     mActiveTrack;
884                Condition                           mStartStopCond;
885                AudioResampler                      *mResampler;
886                int32_t                             *mRsmpOutBuffer;
887                int16_t                             *mRsmpInBuffer;
888                size_t                              mRsmpInIndex;
889                size_t                              mInputBytes;
890                int                                 mReqChannelCount;
891                uint32_t                            mReqSampleRate;
892                ssize_t                             mBytesRead;
893    };
894
895    class RecordHandle : public android::BnAudioRecord {
896    public:
897        RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack);
898        virtual             ~RecordHandle();
899        virtual status_t    start();
900        virtual void        stop();
901        virtual sp<IMemory> getCblk() const;
902        virtual status_t onTransact(
903            uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
904    private:
905        sp<RecordThread::RecordTrack> mRecordTrack;
906    };
907
908    //--- Audio Effect Management
909
910    // EffectModule and EffectChain classes both have their own mutex to protect
911    // state changes or resource modifications. Always respect the following order
912    // if multiple mutexes must be acquired to avoid cross deadlock:
913    // AudioFlinger -> ThreadBase -> EffectChain -> EffectModule
914
915    // The EffectModule class is a wrapper object controlling the effect engine implementation
916    // in the effect library. It prevents concurrent calls to process() and command() functions
917    // from different client threads. It keeps a list of EffectHandle objects corresponding
918    // to all client applications using this effect and notifies applications of effect state,
919    // control or parameter changes. It manages the activation state machine to send appropriate
920    // reset, enable, disable commands to effect engine and provide volume
921    // ramping when effects are activated/deactivated.
922    // When controlling an auxiliary effect, the EffectModule also provides an input buffer used by
923    // the attached track(s) to accumulate their auxiliary channel.
924    class EffectModule: public RefBase {
925    public:
926        EffectModule(const wp<ThreadBase>& wThread,
927                        const wp<AudioFlinger::EffectChain>& chain,
928                        effect_descriptor_t *desc,
929                        int id,
930                        int sessionId);
931        ~EffectModule();
932
933        enum effect_state {
934            IDLE,
935            RESTART,
936            STARTING,
937            ACTIVE,
938            STOPPING,
939            STOPPED
940        };
941
942        int         id() { return mId; }
943        void process();
944        void updateState();
945        status_t command(uint32_t cmdCode,
946                         uint32_t cmdSize,
947                         void *pCmdData,
948                         uint32_t *replySize,
949                         void *pReplyData);
950
951        void reset_l();
952        status_t configure();
953        status_t init();
954        uint32_t state() {
955            return mState;
956        }
957        uint32_t status() {
958            return mStatus;
959        }
960        int sessionId() {
961            return mSessionId;
962        }
963        status_t    setEnabled(bool enabled);
964        bool isEnabled();
965
966        void        setInBuffer(int16_t *buffer) { mConfig.inputCfg.buffer.s16 = buffer; }
967        int16_t     *inBuffer() { return mConfig.inputCfg.buffer.s16; }
968        void        setOutBuffer(int16_t *buffer) { mConfig.outputCfg.buffer.s16 = buffer; }
969        int16_t     *outBuffer() { return mConfig.outputCfg.buffer.s16; }
970        void        setChain(const wp<EffectChain>& chain) { mChain = chain; }
971        void        setThread(const wp<ThreadBase>& thread) { mThread = thread; }
972
973        status_t addHandle(sp<EffectHandle>& handle);
974        void disconnect(const wp<EffectHandle>& handle);
975        size_t removeHandle (const wp<EffectHandle>& handle);
976
977        effect_descriptor_t& desc() { return mDescriptor; }
978        wp<EffectChain>&     chain() { return mChain; }
979
980        status_t         setDevice(uint32_t device);
981        status_t         setVolume(uint32_t *left, uint32_t *right, bool controller);
982        status_t         setMode(uint32_t mode);
983
984        status_t         dump(int fd, const Vector<String16>& args);
985
986    protected:
987
988        // Maximum time allocated to effect engines to complete the turn off sequence
989        static const uint32_t MAX_DISABLE_TIME_MS = 10000;
990
991        EffectModule(const EffectModule&);
992        EffectModule& operator = (const EffectModule&);
993
994        status_t start_l();
995        status_t stop_l();
996
997        // update this table when AudioSystem::audio_devices or audio_device_e (in EffectApi.h) are modified
998        static const uint32_t sDeviceConvTable[];
999        static uint32_t deviceAudioSystemToEffectApi(uint32_t device);
1000
1001        // update this table when AudioSystem::audio_mode or audio_mode_e (in EffectApi.h) are modified
1002        static const uint32_t sModeConvTable[];
1003        static int modeAudioSystemToEffectApi(uint32_t mode);
1004
1005        Mutex               mLock;      // mutex for process, commands and handles list protection
1006        wp<ThreadBase>      mThread;    // parent thread
1007        wp<EffectChain>     mChain;     // parent effect chain
1008        int                 mId;        // this instance unique ID
1009        int                 mSessionId; // audio session ID
1010        effect_descriptor_t mDescriptor;// effect descriptor received from effect engine
1011        effect_config_t     mConfig;    // input and output audio configuration
1012        effect_interface_t  mEffectInterface; // Effect module C API
1013        status_t mStatus;               // initialization status
1014        uint32_t mState;                // current activation state (effect_state)
1015        Vector< wp<EffectHandle> > mHandles;    // list of client handles
1016        uint32_t mMaxDisableWaitCnt;    // maximum grace period before forcing an effect off after
1017                                        // sending disable command.
1018        uint32_t mDisableWaitCnt;       // current process() calls count during disable period.
1019    };
1020
1021    // The EffectHandle class implements the IEffect interface. It provides resources
1022    // to receive parameter updates, keeps track of effect control
1023    // ownership and state and has a pointer to the EffectModule object it is controlling.
1024    // There is one EffectHandle object for each application controlling (or using)
1025    // an effect module.
1026    // The EffectHandle is obtained by calling AudioFlinger::createEffect().
1027    class EffectHandle: public android::BnEffect {
1028    public:
1029
1030        EffectHandle(const sp<EffectModule>& effect,
1031                const sp<AudioFlinger::Client>& client,
1032                const sp<IEffectClient>& effectClient,
1033                int32_t priority);
1034        virtual ~EffectHandle();
1035
1036        // IEffect
1037        virtual status_t enable();
1038        virtual status_t disable();
1039        virtual status_t command(uint32_t cmdCode,
1040                                 uint32_t cmdSize,
1041                                 void *pCmdData,
1042                                 uint32_t *replySize,
1043                                 void *pReplyData);
1044        virtual void disconnect();
1045        virtual sp<IMemory> getCblk() const;
1046        virtual status_t onTransact(uint32_t code, const Parcel& data,
1047                Parcel* reply, uint32_t flags);
1048
1049
1050        // Give or take control of effect module
1051        void setControl(bool hasControl, bool signal);
1052        void commandExecuted(uint32_t cmdCode,
1053                             uint32_t cmdSize,
1054                             void *pCmdData,
1055                             uint32_t replySize,
1056                             void *pReplyData);
1057        void setEnabled(bool enabled);
1058
1059        // Getters
1060        int id() { return mEffect->id(); }
1061        int priority() { return mPriority; }
1062        bool hasControl() { return mHasControl; }
1063        sp<EffectModule> effect() { return mEffect; }
1064
1065        void dump(char* buffer, size_t size);
1066
1067    protected:
1068
1069        EffectHandle(const EffectHandle&);
1070        EffectHandle& operator =(const EffectHandle&);
1071
1072        sp<EffectModule> mEffect;           // pointer to controlled EffectModule
1073        sp<IEffectClient> mEffectClient;    // callback interface for client notifications
1074        sp<Client>          mClient;        // client for shared memory allocation
1075        sp<IMemory>         mCblkMemory;    // shared memory for control block
1076        effect_param_cblk_t* mCblk;         // control block for deferred parameter setting via shared memory
1077        uint8_t*            mBuffer;        // pointer to parameter area in shared memory
1078        int mPriority;                      // client application priority to control the effect
1079        bool mHasControl;                   // true if this handle is controlling the effect
1080    };
1081
1082    // the EffectChain class represents a group of effects associated to one audio session.
1083    // There can be any number of EffectChain objects per output mixer thread (PlaybackThread).
1084    // The EffecChain with session ID 0 contains global effects applied to the output mix.
1085    // Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks)
1086    // are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding
1087    // in the effect process order. When attached to a track (session ID != 0), it also provide it's own
1088    // input buffer used by the track as accumulation buffer.
1089    class EffectChain: public RefBase {
1090    public:
1091        EffectChain(const wp<ThreadBase>& wThread, int sessionId);
1092        ~EffectChain();
1093
1094        void process_l();
1095
1096        void lock() {
1097            mLock.lock();
1098        }
1099        void unlock() {
1100            mLock.unlock();
1101        }
1102
1103        status_t addEffect_l(const sp<EffectModule>& handle);
1104        size_t removeEffect_l(const sp<EffectModule>& handle);
1105
1106        int sessionId() {
1107            return mSessionId;
1108        }
1109
1110        sp<EffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor);
1111        sp<EffectModule> getEffectFromId_l(int id);
1112        bool setVolume_l(uint32_t *left, uint32_t *right);
1113        void setDevice_l(uint32_t device);
1114        void setMode_l(uint32_t mode);
1115
1116        void setInBuffer(int16_t *buffer, bool ownsBuffer = false) {
1117            mInBuffer = buffer;
1118            mOwnInBuffer = ownsBuffer;
1119        }
1120        int16_t *inBuffer() {
1121            return mInBuffer;
1122        }
1123        void setOutBuffer(int16_t *buffer) {
1124            mOutBuffer = buffer;
1125        }
1126        int16_t *outBuffer() {
1127            return mOutBuffer;
1128        }
1129
1130        void startTrack() {mActiveTrackCnt++;}
1131        void stopTrack() {mActiveTrackCnt--;}
1132        int activeTracks() { return mActiveTrackCnt;}
1133
1134        uint32_t strategy() { return mStrategy; }
1135        void setStrategy(uint32_t strategy)
1136                 { mStrategy = strategy; }
1137
1138        status_t dump(int fd, const Vector<String16>& args);
1139
1140    protected:
1141
1142        EffectChain(const EffectChain&);
1143        EffectChain& operator =(const EffectChain&);
1144
1145        wp<ThreadBase> mThread;     // parent mixer thread
1146        Mutex mLock;                // mutex protecting effect list
1147        Vector<sp<EffectModule> > mEffects; // list of effect modules
1148        int mSessionId;             // audio session ID
1149        int16_t *mInBuffer;         // chain input buffer
1150        int16_t *mOutBuffer;        // chain output buffer
1151        int mActiveTrackCnt;        // number of active tracks connected
1152        bool mOwnInBuffer;          // true if the chain owns its input buffer
1153        int mVolumeCtrlIdx;         // index of insert effect having control over volume
1154        uint32_t mLeftVolume;       // previous volume on left channel
1155        uint32_t mRightVolume;      // previous volume on right channel
1156        uint32_t mNewLeftVolume;       // new volume on left channel
1157        uint32_t mNewRightVolume;      // new volume on right channel
1158        uint32_t mStrategy; // strategy for this effect chain
1159    };
1160
1161    friend class RecordThread;
1162    friend class PlaybackThread;
1163
1164
1165    mutable     Mutex                               mLock;
1166
1167                DefaultKeyedVector< pid_t, wp<Client> >     mClients;
1168
1169                mutable     Mutex                   mHardwareLock;
1170                AudioHardwareInterface*             mAudioHardware;
1171    mutable     int                                 mHardwareStatus;
1172
1173
1174                DefaultKeyedVector< int, sp<PlaybackThread> >  mPlaybackThreads;
1175                PlaybackThread::stream_type_t       mStreamTypes[AudioSystem::NUM_STREAM_TYPES];
1176                float                               mMasterVolume;
1177                bool                                mMasterMute;
1178
1179                DefaultKeyedVector< int, sp<RecordThread> >    mRecordThreads;
1180
1181                DefaultKeyedVector< pid_t, sp<NotificationClient> >    mNotificationClients;
1182                volatile int32_t                    mNextUniqueId;
1183#ifdef LVMX
1184                int mLifeVibesClientPid;
1185#endif
1186                uint32_t mMode;
1187
1188};
1189
1190// ----------------------------------------------------------------------------
1191
1192}; // namespace android
1193
1194#endif // ANDROID_AUDIO_FLINGER_H
1195