| /* |
| ** |
| ** Copyright 2012, The Android Open Source Project |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| |
| #ifndef INCLUDING_FROM_AUDIOFLINGER_H |
| #error This header file should only be included from AudioFlinger.h |
| #endif |
| |
| class ThreadBase : public Thread { |
| public: |
| |
| #include "TrackBase.h" |
| |
| enum type_t { |
| MIXER, // Thread class is MixerThread |
| DIRECT, // Thread class is DirectOutputThread |
| DUPLICATING, // Thread class is DuplicatingThread |
| RECORD // Thread class is RecordThread |
| }; |
| |
| ThreadBase(const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id, |
| audio_devices_t outDevice, audio_devices_t inDevice, type_t type); |
| virtual ~ThreadBase(); |
| |
| void dumpBase(int fd, const Vector<String16>& args); |
| void dumpEffectChains(int fd, const Vector<String16>& args); |
| |
| void clearPowerManager(); |
| |
| // base for record and playback |
| enum { |
| CFG_EVENT_IO, |
| CFG_EVENT_PRIO |
| }; |
| |
| class ConfigEvent { |
| public: |
| ConfigEvent(int type) : mType(type) {} |
| virtual ~ConfigEvent() {} |
| |
| int type() const { return mType; } |
| |
| virtual void dump(char *buffer, size_t size) = 0; |
| |
| private: |
| const int mType; |
| }; |
| |
| class IoConfigEvent : public ConfigEvent { |
| public: |
| IoConfigEvent(int event, int param) : |
| ConfigEvent(CFG_EVENT_IO), mEvent(event), mParam(event) {} |
| virtual ~IoConfigEvent() {} |
| |
| int event() const { return mEvent; } |
| int param() const { return mParam; } |
| |
| virtual void dump(char *buffer, size_t size) { |
| snprintf(buffer, size, "IO event: event %d, param %d\n", mEvent, mParam); |
| } |
| |
| private: |
| const int mEvent; |
| const int mParam; |
| }; |
| |
| class PrioConfigEvent : public ConfigEvent { |
| public: |
| PrioConfigEvent(pid_t pid, pid_t tid, int32_t prio) : |
| ConfigEvent(CFG_EVENT_PRIO), mPid(pid), mTid(tid), mPrio(prio) {} |
| virtual ~PrioConfigEvent() {} |
| |
| pid_t pid() const { return mPid; } |
| pid_t tid() const { return mTid; } |
| int32_t prio() const { return mPrio; } |
| |
| virtual void dump(char *buffer, size_t size) { |
| snprintf(buffer, size, "Prio event: pid %d, tid %d, prio %d\n", mPid, mTid, mPrio); |
| } |
| |
| private: |
| const pid_t mPid; |
| const pid_t mTid; |
| const int32_t mPrio; |
| }; |
| |
| |
| class PMDeathRecipient : public IBinder::DeathRecipient { |
| public: |
| PMDeathRecipient(const wp<ThreadBase>& thread) : mThread(thread) {} |
| virtual ~PMDeathRecipient() {} |
| |
| // IBinder::DeathRecipient |
| virtual void binderDied(const wp<IBinder>& who); |
| |
| private: |
| PMDeathRecipient(const PMDeathRecipient&); |
| PMDeathRecipient& operator = (const PMDeathRecipient&); |
| |
| wp<ThreadBase> mThread; |
| }; |
| |
| virtual status_t initCheck() const = 0; |
| |
| // static externally-visible |
| type_t type() const { return mType; } |
| audio_io_handle_t id() const { return mId;} |
| |
| // dynamic externally-visible |
| uint32_t sampleRate() const { return mSampleRate; } |
| uint32_t channelCount() const { return mChannelCount; } |
| audio_channel_mask_t channelMask() const { return mChannelMask; } |
| audio_format_t format() const { return mFormat; } |
| // Called by AudioFlinger::frameCount(audio_io_handle_t output) and effects, |
| // and returns the normal mix buffer's frame count. |
| size_t frameCount() const { return mNormalFrameCount; } |
| // Return's the HAL's frame count i.e. fast mixer buffer size. |
| size_t frameCountHAL() const { return mFrameCount; } |
| |
| // Should be "virtual status_t requestExitAndWait()" and override same |
| // method in Thread, but Thread::requestExitAndWait() is not yet virtual. |
| void exit(); |
| virtual bool checkForNewParameters_l() = 0; |
| virtual status_t setParameters(const String8& keyValuePairs); |
| virtual String8 getParameters(const String8& keys) = 0; |
| virtual void audioConfigChanged_l(int event, int param = 0) = 0; |
| void sendIoConfigEvent(int event, int param = 0); |
| void sendIoConfigEvent_l(int event, int param = 0); |
| void sendPrioConfigEvent_l(pid_t pid, pid_t tid, int32_t prio); |
| void processConfigEvents(); |
| |
| // see note at declaration of mStandby, mOutDevice and mInDevice |
| bool standby() const { return mStandby; } |
| audio_devices_t outDevice() const { return mOutDevice; } |
| audio_devices_t inDevice() const { return mInDevice; } |
| |
| virtual audio_stream_t* stream() const = 0; |
| |
| sp<EffectHandle> createEffect_l( |
| const sp<AudioFlinger::Client>& client, |
| const sp<IEffectClient>& effectClient, |
| int32_t priority, |
| int sessionId, |
| effect_descriptor_t *desc, |
| int *enabled, |
| status_t *status); |
| void disconnectEffect(const sp< EffectModule>& effect, |
| EffectHandle *handle, |
| bool unpinIfLast); |
| |
| // return values for hasAudioSession (bit field) |
| enum effect_state { |
| EFFECT_SESSION = 0x1, // the audio session corresponds to at least one |
| // effect |
| TRACK_SESSION = 0x2 // the audio session corresponds to at least one |
| // track |
| }; |
| |
| // get effect chain corresponding to session Id. |
| sp<EffectChain> getEffectChain(int sessionId); |
| // same as getEffectChain() but must be called with ThreadBase mutex locked |
| sp<EffectChain> getEffectChain_l(int sessionId) const; |
| // add an effect chain to the chain list (mEffectChains) |
| virtual status_t addEffectChain_l(const sp<EffectChain>& chain) = 0; |
| // remove an effect chain from the chain list (mEffectChains) |
| virtual size_t removeEffectChain_l(const sp<EffectChain>& chain) = 0; |
| // lock all effect chains Mutexes. Must be called before releasing the |
| // ThreadBase mutex before processing the mixer and effects. This guarantees the |
| // integrity of the chains during the process. |
| // Also sets the parameter 'effectChains' to current value of mEffectChains. |
| void lockEffectChains_l(Vector< sp<EffectChain> >& effectChains); |
| // unlock effect chains after process |
| void unlockEffectChains(const Vector< sp<EffectChain> >& effectChains); |
| // set audio mode to all effect chains |
| void setMode(audio_mode_t mode); |
| // get effect module with corresponding ID on specified audio session |
| sp<AudioFlinger::EffectModule> getEffect(int sessionId, int effectId); |
| sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId); |
| // add and effect module. Also creates the effect chain is none exists for |
| // the effects audio session |
| status_t addEffect_l(const sp< EffectModule>& effect); |
| // remove and effect module. Also removes the effect chain is this was the last |
| // effect |
| void removeEffect_l(const sp< EffectModule>& effect); |
| // detach all tracks connected to an auxiliary effect |
| virtual void detachAuxEffect_l(int effectId) {} |
| // returns either EFFECT_SESSION if effects on this audio session exist in one |
| // chain, or TRACK_SESSION if tracks on this audio session exist, or both |
| virtual uint32_t hasAudioSession(int sessionId) const = 0; |
| // the value returned by default implementation is not important as the |
| // strategy is only meaningful for PlaybackThread which implements this method |
| virtual uint32_t getStrategyForSession_l(int sessionId) { return 0; } |
| |
| // suspend or restore effect according to the type of effect passed. a NULL |
| // type pointer means suspend all effects in the session |
| void setEffectSuspended(const effect_uuid_t *type, |
| bool suspend, |
| int sessionId = AUDIO_SESSION_OUTPUT_MIX); |
| // check if some effects must be suspended/restored when an effect is enabled |
| // or disabled |
| void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, |
| bool enabled, |
| int sessionId = AUDIO_SESSION_OUTPUT_MIX); |
| void checkSuspendOnEffectEnabled_l(const sp<EffectModule>& effect, |
| bool enabled, |
| int sessionId = AUDIO_SESSION_OUTPUT_MIX); |
| |
| virtual status_t setSyncEvent(const sp<SyncEvent>& event) = 0; |
| virtual bool isValidSyncEvent(const sp<SyncEvent>& event) const = 0; |
| |
| |
| mutable Mutex mLock; |
| |
| protected: |
| |
| // entry describing an effect being suspended in mSuspendedSessions keyed vector |
| class SuspendedSessionDesc : public RefBase { |
| public: |
| SuspendedSessionDesc() : mRefCount(0) {} |
| |
| int mRefCount; // number of active suspend requests |
| effect_uuid_t mType; // effect type UUID |
| }; |
| |
| void acquireWakeLock(); |
| void acquireWakeLock_l(); |
| void releaseWakeLock(); |
| void releaseWakeLock_l(); |
| void setEffectSuspended_l(const effect_uuid_t *type, |
| bool suspend, |
| int sessionId); |
| // updated mSuspendedSessions when an effect suspended or restored |
| void updateSuspendedSessions_l(const effect_uuid_t *type, |
| bool suspend, |
| int sessionId); |
| // check if some effects must be suspended when an effect chain is added |
| void checkSuspendOnAddEffectChain_l(const sp<EffectChain>& chain); |
| |
| virtual void preExit() { } |
| |
| friend class AudioFlinger; // for mEffectChains |
| |
| const type_t mType; |
| |
| // Used by parameters, config events, addTrack_l, exit |
| Condition mWaitWorkCV; |
| |
| const sp<AudioFlinger> mAudioFlinger; |
| uint32_t mSampleRate; |
| size_t mFrameCount; // output HAL, direct output, record |
| size_t mNormalFrameCount; // normal mixer and effects |
| audio_channel_mask_t mChannelMask; |
| uint16_t mChannelCount; |
| size_t mFrameSize; |
| audio_format_t mFormat; |
| |
| // Parameter sequence by client: binder thread calling setParameters(): |
| // 1. Lock mLock |
| // 2. Append to mNewParameters |
| // 3. mWaitWorkCV.signal |
| // 4. mParamCond.waitRelative with timeout |
| // 5. read mParamStatus |
| // 6. mWaitWorkCV.signal |
| // 7. Unlock |
| // |
| // Parameter sequence by server: threadLoop calling checkForNewParameters_l(): |
| // 1. Lock mLock |
| // 2. If there is an entry in mNewParameters proceed ... |
| // 2. Read first entry in mNewParameters |
| // 3. Process |
| // 4. Remove first entry from mNewParameters |
| // 5. Set mParamStatus |
| // 6. mParamCond.signal |
| // 7. mWaitWorkCV.wait with timeout (this is to avoid overwriting mParamStatus) |
| // 8. Unlock |
| Condition mParamCond; |
| Vector<String8> mNewParameters; |
| status_t mParamStatus; |
| |
| Vector<ConfigEvent *> mConfigEvents; |
| |
| // These fields are written and read by thread itself without lock or barrier, |
| // and read by other threads without lock or barrier via standby() , outDevice() |
| // and inDevice(). |
| // Because of the absence of a lock or barrier, any other thread that reads |
| // these fields must use the information in isolation, or be prepared to deal |
| // with possibility that it might be inconsistent with other information. |
| bool mStandby; // Whether thread is currently in standby. |
| audio_devices_t mOutDevice; // output device |
| audio_devices_t mInDevice; // input device |
| audio_source_t mAudioSource; // (see audio.h, audio_source_t) |
| |
| const audio_io_handle_t mId; |
| Vector< sp<EffectChain> > mEffectChains; |
| |
| static const int kNameLength = 16; // prctl(PR_SET_NAME) limit |
| char mName[kNameLength]; |
| sp<IPowerManager> mPowerManager; |
| sp<IBinder> mWakeLockToken; |
| const sp<PMDeathRecipient> mDeathRecipient; |
| // list of suspended effects per session and per type. The first vector is |
| // keyed by session ID, the second by type UUID timeLow field |
| KeyedVector< int, KeyedVector< int, sp<SuspendedSessionDesc> > > |
| mSuspendedSessions; |
| static const size_t kLogSize = 512; |
| sp<NBLog::Writer> mNBLogWriter; |
| }; |
| |
| // --- PlaybackThread --- |
| class PlaybackThread : public ThreadBase { |
| public: |
| |
| #include "PlaybackTracks.h" |
| |
| enum mixer_state { |
| MIXER_IDLE, // no active tracks |
| MIXER_TRACKS_ENABLED, // at least one active track, but no track has any data ready |
| MIXER_TRACKS_READY // at least one active track, and at least one track has data |
| // standby mode does not have an enum value |
| // suspend by audio policy manager is orthogonal to mixer state |
| }; |
| |
| PlaybackThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, |
| audio_io_handle_t id, audio_devices_t device, type_t type); |
| virtual ~PlaybackThread(); |
| |
| void dump(int fd, const Vector<String16>& args); |
| |
| // Thread virtuals |
| virtual status_t readyToRun(); |
| virtual bool threadLoop(); |
| |
| // RefBase |
| virtual void onFirstRef(); |
| |
| protected: |
| // Code snippets that were lifted up out of threadLoop() |
| virtual void threadLoop_mix() = 0; |
| virtual void threadLoop_sleepTime() = 0; |
| virtual void threadLoop_write(); |
| virtual void threadLoop_standby(); |
| virtual void threadLoop_removeTracks(const Vector< sp<Track> >& tracksToRemove); |
| |
| // prepareTracks_l reads and writes mActiveTracks, and returns |
| // the pending set of tracks to remove via Vector 'tracksToRemove'. The caller |
| // is responsible for clearing or destroying this Vector later on, when it |
| // is safe to do so. That will drop the final ref count and destroy the tracks. |
| virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove) = 0; |
| |
| // ThreadBase virtuals |
| virtual void preExit(); |
| |
| public: |
| |
| virtual status_t initCheck() const { return (mOutput == NULL) ? NO_INIT : NO_ERROR; } |
| |
| // return estimated latency in milliseconds, as reported by HAL |
| uint32_t latency() const; |
| // same, but lock must already be held |
| uint32_t latency_l() const; |
| |
| void setMasterVolume(float value); |
| void setMasterMute(bool muted); |
| |
| void setStreamVolume(audio_stream_type_t stream, float value); |
| void setStreamMute(audio_stream_type_t stream, bool muted); |
| |
| float streamVolume(audio_stream_type_t stream) const; |
| |
| sp<Track> createTrack_l( |
| const sp<AudioFlinger::Client>& client, |
| audio_stream_type_t streamType, |
| uint32_t sampleRate, |
| audio_format_t format, |
| audio_channel_mask_t channelMask, |
| size_t frameCount, |
| const sp<IMemory>& sharedBuffer, |
| int sessionId, |
| IAudioFlinger::track_flags_t *flags, |
| pid_t tid, |
| status_t *status); |
| |
| AudioStreamOut* getOutput() const; |
| AudioStreamOut* clearOutput(); |
| virtual audio_stream_t* stream() const; |
| |
| // a very large number of suspend() will eventually wraparound, but unlikely |
| void suspend() { (void) android_atomic_inc(&mSuspended); } |
| void restore() |
| { |
| // if restore() is done without suspend(), get back into |
| // range so that the next suspend() will operate correctly |
| if (android_atomic_dec(&mSuspended) <= 0) { |
| android_atomic_release_store(0, &mSuspended); |
| } |
| } |
| bool isSuspended() const |
| { return android_atomic_acquire_load(&mSuspended) > 0; } |
| |
| virtual String8 getParameters(const String8& keys); |
| virtual void audioConfigChanged_l(int event, int param = 0); |
| status_t getRenderPosition(size_t *halFrames, size_t *dspFrames); |
| int16_t *mixBuffer() const { return mMixBuffer; }; |
| |
| virtual void detachAuxEffect_l(int effectId); |
| status_t attachAuxEffect(const sp<AudioFlinger::PlaybackThread::Track> track, |
| int EffectId); |
| status_t attachAuxEffect_l(const sp<AudioFlinger::PlaybackThread::Track> track, |
| int EffectId); |
| |
| virtual status_t addEffectChain_l(const sp<EffectChain>& chain); |
| virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); |
| virtual uint32_t hasAudioSession(int sessionId) const; |
| virtual uint32_t getStrategyForSession_l(int sessionId); |
| |
| |
| virtual status_t setSyncEvent(const sp<SyncEvent>& event); |
| virtual bool isValidSyncEvent(const sp<SyncEvent>& event) const; |
| void invalidateTracks(audio_stream_type_t streamType); |
| |
| |
| protected: |
| int16_t* mMixBuffer; |
| |
| // suspend count, > 0 means suspended. While suspended, the thread continues to pull from |
| // tracks and mix, but doesn't write to HAL. A2DP and SCO HAL implementations can't handle |
| // concurrent use of both of them, so Audio Policy Service suspends one of the threads to |
| // workaround that restriction. |
| // 'volatile' means accessed via atomic operations and no lock. |
| volatile int32_t mSuspended; |
| |
| // FIXME overflows every 6+ hours at 44.1 kHz stereo 16-bit samples |
| // mFramesWritten would be better, or 64-bit even better |
| size_t mBytesWritten; |
| private: |
| // mMasterMute is in both PlaybackThread and in AudioFlinger. When a |
| // PlaybackThread needs to find out if master-muted, it checks it's local |
| // copy rather than the one in AudioFlinger. This optimization saves a lock. |
| bool mMasterMute; |
| void setMasterMute_l(bool muted) { mMasterMute = muted; } |
| protected: |
| SortedVector< wp<Track> > mActiveTracks; // FIXME check if this could be sp<> |
| |
| // Allocate a track name for a given channel mask. |
| // Returns name >= 0 if successful, -1 on failure. |
| virtual int getTrackName_l(audio_channel_mask_t channelMask, int sessionId) = 0; |
| virtual void deleteTrackName_l(int name) = 0; |
| |
| // Time to sleep between cycles when: |
| virtual uint32_t activeSleepTimeUs() const; // mixer state MIXER_TRACKS_ENABLED |
| virtual uint32_t idleSleepTimeUs() const = 0; // mixer state MIXER_IDLE |
| virtual uint32_t suspendSleepTimeUs() const = 0; // audio policy manager suspended us |
| // No sleep when mixer state == MIXER_TRACKS_READY; relies on audio HAL stream->write() |
| // No sleep in standby mode; waits on a condition |
| |
| // Code snippets that are temporarily lifted up out of threadLoop() until the merge |
| void checkSilentMode_l(); |
| |
| // Non-trivial for DUPLICATING only |
| virtual void saveOutputTracks() { } |
| virtual void clearOutputTracks() { } |
| |
| // Cache various calculated values, at threadLoop() entry and after a parameter change |
| virtual void cacheParameters_l(); |
| |
| virtual uint32_t correctLatency_l(uint32_t latency) const; |
| |
| private: |
| |
| friend class AudioFlinger; // for numerous |
| |
| PlaybackThread(const Client&); |
| PlaybackThread& operator = (const PlaybackThread&); |
| |
| status_t addTrack_l(const sp<Track>& track); |
| void destroyTrack_l(const sp<Track>& track); |
| void removeTrack_l(const sp<Track>& track); |
| |
| void readOutputParameters(); |
| |
| virtual void dumpInternals(int fd, const Vector<String16>& args); |
| void dumpTracks(int fd, const Vector<String16>& args); |
| |
| SortedVector< sp<Track> > mTracks; |
| // mStreamTypes[] uses 1 additional stream type internally for the OutputTrack used by |
| // DuplicatingThread |
| stream_type_t mStreamTypes[AUDIO_STREAM_CNT + 1]; |
| AudioStreamOut *mOutput; |
| |
| float mMasterVolume; |
| nsecs_t mLastWriteTime; |
| int mNumWrites; |
| int mNumDelayedWrites; |
| bool mInWrite; |
| |
| // FIXME rename these former local variables of threadLoop to standard "m" names |
| nsecs_t standbyTime; |
| size_t mixBufferSize; |
| |
| // cached copies of activeSleepTimeUs() and idleSleepTimeUs() made by cacheParameters_l() |
| uint32_t activeSleepTime; |
| uint32_t idleSleepTime; |
| |
| uint32_t sleepTime; |
| |
| // mixer status returned by prepareTracks_l() |
| mixer_state mMixerStatus; // current cycle |
| // previous cycle when in prepareTracks_l() |
| mixer_state mMixerStatusIgnoringFastTracks; |
| // FIXME or a separate ready state per track |
| |
| // FIXME move these declarations into the specific sub-class that needs them |
| // MIXER only |
| uint32_t sleepTimeShift; |
| |
| // same as AudioFlinger::mStandbyTimeInNsecs except for DIRECT which uses a shorter value |
| nsecs_t standbyDelay; |
| |
| // MIXER only |
| nsecs_t maxPeriod; |
| |
| // DUPLICATING only |
| uint32_t writeFrames; |
| |
| private: |
| // The HAL output sink is treated as non-blocking, but current implementation is blocking |
| sp<NBAIO_Sink> mOutputSink; |
| // If a fast mixer is present, the blocking pipe sink, otherwise clear |
| sp<NBAIO_Sink> mPipeSink; |
| // The current sink for the normal mixer to write it's (sub)mix, mOutputSink or mPipeSink |
| sp<NBAIO_Sink> mNormalSink; |
| // For dumpsys |
| sp<NBAIO_Sink> mTeeSink; |
| sp<NBAIO_Source> mTeeSource; |
| uint32_t mScreenState; // cached copy of gScreenState |
| static const size_t kFastMixerLogSize = 8 * 1024; |
| sp<NBLog::Writer> mFastMixerNBLogWriter; |
| public: |
| virtual bool hasFastMixer() const = 0; |
| virtual FastTrackUnderruns getFastTrackUnderruns(size_t fastIndex) const |
| { FastTrackUnderruns dummy; return dummy; } |
| |
| protected: |
| // accessed by both binder threads and within threadLoop(), lock on mutex needed |
| unsigned mFastTrackAvailMask; // bit i set if fast track [i] is available |
| |
| }; |
| |
| class MixerThread : public PlaybackThread { |
| public: |
| MixerThread(const sp<AudioFlinger>& audioFlinger, |
| AudioStreamOut* output, |
| audio_io_handle_t id, |
| audio_devices_t device, |
| type_t type = MIXER); |
| virtual ~MixerThread(); |
| |
| // Thread virtuals |
| |
| virtual bool checkForNewParameters_l(); |
| virtual void dumpInternals(int fd, const Vector<String16>& args); |
| |
| protected: |
| virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove); |
| virtual int getTrackName_l(audio_channel_mask_t channelMask, int sessionId); |
| virtual void deleteTrackName_l(int name); |
| virtual uint32_t idleSleepTimeUs() const; |
| virtual uint32_t suspendSleepTimeUs() const; |
| virtual void cacheParameters_l(); |
| |
| // threadLoop snippets |
| virtual void threadLoop_write(); |
| virtual void threadLoop_standby(); |
| virtual void threadLoop_mix(); |
| virtual void threadLoop_sleepTime(); |
| virtual void threadLoop_removeTracks(const Vector< sp<Track> >& tracksToRemove); |
| virtual uint32_t correctLatency_l(uint32_t latency) const; |
| |
| AudioMixer* mAudioMixer; // normal mixer |
| private: |
| // one-time initialization, no locks required |
| FastMixer* mFastMixer; // non-NULL if there is also a fast mixer |
| sp<AudioWatchdog> mAudioWatchdog; // non-0 if there is an audio watchdog thread |
| |
| // contents are not guaranteed to be consistent, no locks required |
| FastMixerDumpState mFastMixerDumpState; |
| #ifdef STATE_QUEUE_DUMP |
| StateQueueObserverDump mStateQueueObserverDump; |
| StateQueueMutatorDump mStateQueueMutatorDump; |
| #endif |
| AudioWatchdogDump mAudioWatchdogDump; |
| |
| // accessible only within the threadLoop(), no locks required |
| // mFastMixer->sq() // for mutating and pushing state |
| int32_t mFastMixerFutex; // for cold idle |
| |
| public: |
| virtual bool hasFastMixer() const { return mFastMixer != NULL; } |
| virtual FastTrackUnderruns getFastTrackUnderruns(size_t fastIndex) const { |
| ALOG_ASSERT(fastIndex < FastMixerState::kMaxFastTracks); |
| return mFastMixerDumpState.mTracks[fastIndex].mUnderruns; |
| } |
| }; |
| |
| class DirectOutputThread : public PlaybackThread { |
| public: |
| |
| DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, |
| audio_io_handle_t id, audio_devices_t device); |
| virtual ~DirectOutputThread(); |
| |
| // Thread virtuals |
| |
| virtual bool checkForNewParameters_l(); |
| |
| protected: |
| virtual int getTrackName_l(audio_channel_mask_t channelMask, int sessionId); |
| virtual void deleteTrackName_l(int name); |
| virtual uint32_t activeSleepTimeUs() const; |
| virtual uint32_t idleSleepTimeUs() const; |
| virtual uint32_t suspendSleepTimeUs() const; |
| virtual void cacheParameters_l(); |
| |
| // threadLoop snippets |
| virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove); |
| virtual void threadLoop_mix(); |
| virtual void threadLoop_sleepTime(); |
| |
| private: |
| // volumes last sent to audio HAL with stream->set_volume() |
| float mLeftVolFloat; |
| float mRightVolFloat; |
| |
| // prepareTracks_l() tells threadLoop_mix() the name of the single active track |
| sp<Track> mActiveTrack; |
| public: |
| virtual bool hasFastMixer() const { return false; } |
| }; |
| |
| class DuplicatingThread : public MixerThread { |
| public: |
| DuplicatingThread(const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, |
| audio_io_handle_t id); |
| virtual ~DuplicatingThread(); |
| |
| // Thread virtuals |
| void addOutputTrack(MixerThread* thread); |
| void removeOutputTrack(MixerThread* thread); |
| uint32_t waitTimeMs() const { return mWaitTimeMs; } |
| protected: |
| virtual uint32_t activeSleepTimeUs() const; |
| |
| private: |
| bool outputsReady(const SortedVector< sp<OutputTrack> > &outputTracks); |
| protected: |
| // threadLoop snippets |
| virtual void threadLoop_mix(); |
| virtual void threadLoop_sleepTime(); |
| virtual void threadLoop_write(); |
| virtual void threadLoop_standby(); |
| virtual void cacheParameters_l(); |
| |
| private: |
| // called from threadLoop, addOutputTrack, removeOutputTrack |
| virtual void updateWaitTime_l(); |
| protected: |
| virtual void saveOutputTracks(); |
| virtual void clearOutputTracks(); |
| private: |
| |
| uint32_t mWaitTimeMs; |
| SortedVector < sp<OutputTrack> > outputTracks; |
| SortedVector < sp<OutputTrack> > mOutputTracks; |
| public: |
| virtual bool hasFastMixer() const { return false; } |
| }; |
| |
| |
| // record thread |
| class RecordThread : public ThreadBase, public AudioBufferProvider |
| // derives from AudioBufferProvider interface for use by resampler |
| { |
| public: |
| |
| #include "RecordTracks.h" |
| |
| RecordThread(const sp<AudioFlinger>& audioFlinger, |
| AudioStreamIn *input, |
| uint32_t sampleRate, |
| audio_channel_mask_t channelMask, |
| audio_io_handle_t id, |
| audio_devices_t outDevice, |
| audio_devices_t inDevice, |
| const sp<NBAIO_Sink>& teeSink); |
| virtual ~RecordThread(); |
| |
| // no addTrack_l ? |
| void destroyTrack_l(const sp<RecordTrack>& track); |
| void removeTrack_l(const sp<RecordTrack>& track); |
| |
| void dumpInternals(int fd, const Vector<String16>& args); |
| void dumpTracks(int fd, const Vector<String16>& args); |
| |
| // Thread virtuals |
| virtual bool threadLoop(); |
| virtual status_t readyToRun(); |
| |
| // RefBase |
| virtual void onFirstRef(); |
| |
| virtual status_t initCheck() const { return (mInput == NULL) ? NO_INIT : NO_ERROR; } |
| sp<AudioFlinger::RecordThread::RecordTrack> createRecordTrack_l( |
| const sp<AudioFlinger::Client>& client, |
| uint32_t sampleRate, |
| audio_format_t format, |
| audio_channel_mask_t channelMask, |
| size_t frameCount, |
| int sessionId, |
| IAudioFlinger::track_flags_t flags, |
| pid_t tid, |
| status_t *status); |
| |
| status_t start(RecordTrack* recordTrack, |
| AudioSystem::sync_event_t event, |
| int triggerSession); |
| |
| // ask the thread to stop the specified track, and |
| // return true if the caller should then do it's part of the stopping process |
| bool stop_l(RecordTrack* recordTrack); |
| |
| void dump(int fd, const Vector<String16>& args); |
| AudioStreamIn* clearInput(); |
| virtual audio_stream_t* stream() const; |
| |
| // AudioBufferProvider interface |
| virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts); |
| virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); |
| |
| virtual bool checkForNewParameters_l(); |
| virtual String8 getParameters(const String8& keys); |
| virtual void audioConfigChanged_l(int event, int param = 0); |
| void readInputParameters(); |
| virtual unsigned int getInputFramesLost(); |
| |
| virtual status_t addEffectChain_l(const sp<EffectChain>& chain); |
| virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); |
| virtual uint32_t hasAudioSession(int sessionId) const; |
| |
| // Return the set of unique session IDs across all tracks. |
| // The keys are the session IDs, and the associated values are meaningless. |
| // FIXME replace by Set [and implement Bag/Multiset for other uses]. |
| KeyedVector<int, bool> sessionIds() const; |
| |
| virtual status_t setSyncEvent(const sp<SyncEvent>& event); |
| virtual bool isValidSyncEvent(const sp<SyncEvent>& event) const; |
| |
| static void syncStartEventCallback(const wp<SyncEvent>& event); |
| void handleSyncStartEvent(const sp<SyncEvent>& event); |
| |
| private: |
| void clearSyncStartEvent(); |
| |
| // Enter standby if not already in standby, and set mStandby flag |
| void standby(); |
| |
| // Call the HAL standby method unconditionally, and don't change mStandby flag |
| void inputStandBy(); |
| |
| AudioStreamIn *mInput; |
| SortedVector < sp<RecordTrack> > mTracks; |
| // mActiveTrack has dual roles: it indicates the current active track, and |
| // is used together with mStartStopCond to indicate start()/stop() progress |
| sp<RecordTrack> mActiveTrack; |
| Condition mStartStopCond; |
| AudioResampler *mResampler; |
| int32_t *mRsmpOutBuffer; |
| int16_t *mRsmpInBuffer; |
| size_t mRsmpInIndex; |
| size_t mInputBytes; |
| const uint32_t mReqChannelCount; |
| const uint32_t mReqSampleRate; |
| ssize_t mBytesRead; |
| // sync event triggering actual audio capture. Frames read before this event will |
| // be dropped and therefore not read by the application. |
| sp<SyncEvent> mSyncStartEvent; |
| // number of captured frames to drop after the start sync event has been received. |
| // when < 0, maximum frames to drop before starting capture even if sync event is |
| // not received |
| ssize_t mFramestoDrop; |
| |
| // For dumpsys |
| const sp<NBAIO_Sink> mTeeSink; |
| }; |
