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/* //device/include/server/AudioFlinger/AudioFlinger.h
**
** Copyright 2007, 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 ANDROID_AUDIO_FLINGER_H
#define ANDROID_AUDIO_FLINGER_H
#include <stdint.h>
#include <sys/types.h>
#include <limits.h>
#include <media/IAudioFlinger.h>
#include <media/IAudioFlingerClient.h>
#include <media/IAudioTrack.h>
#include <media/IAudioRecord.h>
#include <media/AudioTrack.h>
#include <utils/Atomic.h>
#include <utils/Errors.h>
#include <utils/threads.h>
#include <utils/SortedVector.h>
#include <utils/TypeHelpers.h>
#include <utils/Vector.h>
#include <binder/BinderService.h>
#include <binder/MemoryDealer.h>
#include <system/audio.h>
#include <hardware/audio.h>
#include "AudioBufferProvider.h"
#include <powermanager/IPowerManager.h>
namespace android {
class audio_track_cblk_t;
class effect_param_cblk_t;
class AudioMixer;
class AudioBuffer;
class AudioResampler;
// ----------------------------------------------------------------------------
#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true ))
#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false ))
// ----------------------------------------------------------------------------
static const nsecs_t kStandbyTimeInNsecs = seconds(3);
class AudioFlinger :
public BinderService<AudioFlinger>,
public BnAudioFlinger
{
friend class BinderService<AudioFlinger>;
public:
static char const* getServiceName() { return "media.audio_flinger"; }
virtual status_t dump(int fd, const Vector<String16>& args);
// IAudioFlinger interface
virtual sp<IAudioTrack> createTrack(
pid_t pid,
int streamType,
uint32_t sampleRate,
uint32_t format,
uint32_t channelMask,
int frameCount,
uint32_t flags,
const sp<IMemory>& sharedBuffer,
int output,
int *sessionId,
status_t *status);
virtual uint32_t sampleRate(int output) const;
virtual int channelCount(int output) const;
virtual uint32_t format(int output) const;
virtual size_t frameCount(int output) const;
virtual uint32_t latency(int output) const;
virtual status_t setMasterVolume(float value);
virtual status_t setMasterMute(bool muted);
virtual float masterVolume() const;
virtual bool masterMute() const;
virtual status_t setStreamVolume(int stream, float value, int output);
virtual status_t setStreamMute(int stream, bool muted);
virtual float streamVolume(int stream, int output) const;
virtual bool streamMute(int stream) const;
virtual status_t setMode(int mode);
virtual status_t setMicMute(bool state);
virtual bool getMicMute() const;
virtual status_t setParameters(int ioHandle, const String8& keyValuePairs);
virtual String8 getParameters(int ioHandle, const String8& keys);
virtual void registerClient(const sp<IAudioFlingerClient>& client);
virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount);
virtual unsigned int getInputFramesLost(int ioHandle);
virtual int openOutput(uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t *pLatencyMs,
uint32_t flags);
virtual int openDuplicateOutput(int output1, int output2);
virtual status_t closeOutput(int output);
virtual status_t suspendOutput(int output);
virtual status_t restoreOutput(int output);
virtual int openInput(uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t acoustics);
virtual status_t closeInput(int input);
virtual status_t setStreamOutput(uint32_t stream, int output);
virtual status_t setVoiceVolume(float volume);
virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output);
virtual int newAudioSessionId();
virtual void acquireAudioSessionId(int audioSession);
virtual void releaseAudioSessionId(int audioSession);
virtual status_t queryNumberEffects(uint32_t *numEffects);
virtual status_t queryEffect(uint32_t index, effect_descriptor_t *descriptor);
virtual status_t getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor);
virtual sp<IEffect> createEffect(pid_t pid,
effect_descriptor_t *pDesc,
const sp<IEffectClient>& effectClient,
int32_t priority,
int io,
int sessionId,
status_t *status,
int *id,
int *enabled);
virtual status_t moveEffects(int sessionId, int srcOutput, int dstOutput);
enum hardware_call_state {
AUDIO_HW_IDLE = 0,
AUDIO_HW_INIT,
AUDIO_HW_OUTPUT_OPEN,
AUDIO_HW_OUTPUT_CLOSE,
AUDIO_HW_INPUT_OPEN,
AUDIO_HW_INPUT_CLOSE,
AUDIO_HW_STANDBY,
AUDIO_HW_SET_MASTER_VOLUME,
AUDIO_HW_GET_ROUTING,
AUDIO_HW_SET_ROUTING,
AUDIO_HW_GET_MODE,
AUDIO_HW_SET_MODE,
AUDIO_HW_GET_MIC_MUTE,
AUDIO_HW_SET_MIC_MUTE,
AUDIO_SET_VOICE_VOLUME,
AUDIO_SET_PARAMETER,
};
// record interface
virtual sp<IAudioRecord> openRecord(
pid_t pid,
int input,
uint32_t sampleRate,
uint32_t format,
uint32_t channelMask,
int frameCount,
uint32_t flags,
int *sessionId,
status_t *status);
virtual status_t onTransact(
uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags);
uint32_t getMode() { return mMode; }
bool btNrecIsOff() { return mBtNrecIsOff; }
private:
AudioFlinger();
virtual ~AudioFlinger();
status_t initCheck() const;
virtual void onFirstRef();
audio_hw_device_t* findSuitableHwDev_l(uint32_t devices);
void purgeStaleEffects_l();
// Internal dump utilites.
status_t dumpPermissionDenial(int fd, const Vector<String16>& args);
status_t dumpClients(int fd, const Vector<String16>& args);
status_t dumpInternals(int fd, const Vector<String16>& args);
// --- Client ---
class Client : public RefBase {
public:
Client(const sp<AudioFlinger>& audioFlinger, pid_t pid);
virtual ~Client();
const sp<MemoryDealer>& heap() const;
pid_t pid() const { return mPid; }
sp<AudioFlinger> audioFlinger() { return mAudioFlinger; }
private:
Client(const Client&);
Client& operator = (const Client&);
sp<AudioFlinger> mAudioFlinger;
sp<MemoryDealer> mMemoryDealer;
pid_t mPid;
};
// --- Notification Client ---
class NotificationClient : public IBinder::DeathRecipient {
public:
NotificationClient(const sp<AudioFlinger>& audioFlinger,
const sp<IAudioFlingerClient>& client,
pid_t pid);
virtual ~NotificationClient();
sp<IAudioFlingerClient> client() { return mClient; }
// IBinder::DeathRecipient
virtual void binderDied(const wp<IBinder>& who);
private:
NotificationClient(const NotificationClient&);
NotificationClient& operator = (const NotificationClient&);
sp<AudioFlinger> mAudioFlinger;
pid_t mPid;
sp<IAudioFlingerClient> mClient;
};
class TrackHandle;
class RecordHandle;
class RecordThread;
class PlaybackThread;
class MixerThread;
class DirectOutputThread;
class DuplicatingThread;
class Track;
class RecordTrack;
class EffectModule;
class EffectHandle;
class EffectChain;
struct AudioStreamOut;
struct AudioStreamIn;
class ThreadBase : public Thread {
public:
ThreadBase (const sp<AudioFlinger>& audioFlinger, int id, uint32_t device);
virtual ~ThreadBase();
enum type {
MIXER, // Thread class is MixerThread
DIRECT, // Thread class is DirectOutputThread
DUPLICATING, // Thread class is DuplicatingThread
RECORD // Thread class is RecordThread
};
status_t dumpBase(int fd, const Vector<String16>& args);
status_t dumpEffectChains(int fd, const Vector<String16>& args);
void clearPowerManager();
// base for record and playback
class TrackBase : public AudioBufferProvider, public RefBase {
public:
enum track_state {
IDLE,
TERMINATED,
STOPPED,
RESUMING,
ACTIVE,
PAUSING,
PAUSED
};
enum track_flags {
STEPSERVER_FAILED = 0x01, // StepServer could not acquire cblk->lock mutex
SYSTEM_FLAGS_MASK = 0x0000ffffUL,
// The upper 16 bits are used for track-specific flags.
};
TrackBase(const wp<ThreadBase>& thread,
const sp<Client>& client,
uint32_t sampleRate,
uint32_t format,
uint32_t channelMask,
int frameCount,
uint32_t flags,
const sp<IMemory>& sharedBuffer,
int sessionId);
~TrackBase();
virtual status_t start() = 0;
virtual void stop() = 0;
sp<IMemory> getCblk() const;
audio_track_cblk_t* cblk() const { return mCblk; }
int sessionId() { return mSessionId; }
protected:
friend class ThreadBase;
friend class RecordHandle;
friend class PlaybackThread;
friend class RecordThread;
friend class MixerThread;
friend class DirectOutputThread;
TrackBase(const TrackBase&);
TrackBase& operator = (const TrackBase&);
virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer) = 0;
virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer);
uint32_t format() const {
return mFormat;
}
int channelCount() const ;
uint32_t channelMask() const;
int sampleRate() const;
void* getBuffer(uint32_t offset, uint32_t frames) const;
bool isStopped() const {
return mState == STOPPED;
}
bool isTerminated() const {
return mState == TERMINATED;
}
bool step();
void reset();
wp<ThreadBase> mThread;
sp<Client> mClient;
sp<IMemory> mCblkMemory;
audio_track_cblk_t* mCblk;
void* mBuffer;
void* mBufferEnd;
uint32_t mFrameCount;
// we don't really need a lock for these
int mState;
int mClientTid;
uint32_t mFormat;
uint32_t mFlags;
int mSessionId;
uint8_t mChannelCount;
uint32_t mChannelMask;
};
class ConfigEvent {
public:
ConfigEvent() : mEvent(0), mParam(0) {}
int mEvent;
int mParam;
};
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;
int type() const { return mType; }
uint32_t sampleRate() const;
int channelCount() const;
uint32_t format() const;
size_t frameCount() const;
void wakeUp() { mWaitWorkCV.broadcast(); }
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 sendConfigEvent(int event, int param = 0);
void sendConfigEvent_l(int event, int param = 0);
void processConfigEvents();
int id() const { return mId;}
bool standby() { return mStandby; }
uint32_t device() { return mDevice; }
virtual audio_stream_t* stream() = 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,
const wp<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);
// 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 mall 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.
void lockEffectChains_l(Vector<sp <EffectChain> >& effectChains);
// unlock effect chains after process
void unlockEffectChains(Vector<sp <EffectChain> >& effectChains);
// set audio mode to all effect chains
void setMode(uint32_t mode);
// get effect module with corresponding ID on specified audio session
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) = 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);
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 = AUDIO_SESSION_OUTPUT_MIX);
// 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);
friend class AudioFlinger;
friend class Track;
friend class TrackBase;
friend class PlaybackThread;
friend class MixerThread;
friend class DirectOutputThread;
friend class DuplicatingThread;
friend class RecordThread;
friend class RecordTrack;
int mType;
Condition mWaitWorkCV;
sp<AudioFlinger> mAudioFlinger;
uint32_t mSampleRate;
size_t mFrameCount;
uint32_t mChannelMask;
uint16_t mChannelCount;
uint16_t mFrameSize;
uint32_t mFormat;
Condition mParamCond;
Vector<String8> mNewParameters;
status_t mParamStatus;
Vector<ConfigEvent *> mConfigEvents;
bool mStandby;
int mId;
bool mExiting;
Vector< sp<EffectChain> > mEffectChains;
uint32_t mDevice; // output device for PlaybackThread
// input + output devices for RecordThread
static const int kNameLength = 32;
char mName[kNameLength];
sp<IPowerManager> mPowerManager;
sp<IBinder> mWakeLockToken;
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;
};
// --- PlaybackThread ---
class PlaybackThread : public ThreadBase {
public:
enum mixer_state {
MIXER_IDLE,
MIXER_TRACKS_ENABLED,
MIXER_TRACKS_READY
};
// playback track
class Track : public TrackBase {
public:
Track( const wp<ThreadBase>& thread,
const sp<Client>& client,
int streamType,
uint32_t sampleRate,
uint32_t format,
uint32_t channelMask,
int frameCount,
const sp<IMemory>& sharedBuffer,
int sessionId);
~Track();
void dump(char* buffer, size_t size);
virtual status_t start();
virtual void stop();
void pause();
void flush();
void destroy();
void mute(bool);
void setVolume(float left, float right);
int name() const {
return mName;
}
int type() const {
return mStreamType;
}
status_t attachAuxEffect(int EffectId);
void setAuxBuffer(int EffectId, int32_t *buffer);
int32_t *auxBuffer() { return mAuxBuffer; }
void setMainBuffer(int16_t *buffer) { mMainBuffer = buffer; }
int16_t *mainBuffer() { return mMainBuffer; }
int auxEffectId() { return mAuxEffectId; }
protected:
friend class ThreadBase;
friend class TrackHandle;
friend class PlaybackThread;
friend class MixerThread;
friend class DirectOutputThread;
Track(const Track&);
Track& operator = (const Track&);
virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
bool isMuted() { return mMute; }
bool isPausing() const {
return mState == PAUSING;
}
bool isPaused() const {
return mState == PAUSED;
}
bool isReady() const;
void setPaused() { mState = PAUSED; }
void reset();
bool isOutputTrack() const {
return (mStreamType == AUDIO_STREAM_CNT);
}
// we don't really need a lock for these
float mVolume[2];
volatile bool mMute;
// FILLED state is used for suppressing volume ramp at begin of playing
enum {FS_FILLING, FS_FILLED, FS_ACTIVE};
mutable uint8_t mFillingUpStatus;
int8_t mRetryCount;
sp<IMemory> mSharedBuffer;
bool mResetDone;
int mStreamType;
int mName;
int16_t *mMainBuffer;
int32_t *mAuxBuffer;
int mAuxEffectId;
bool mHasVolumeController;
}; // end of Track
// playback track
class OutputTrack : public Track {
public:
class Buffer: public AudioBufferProvider::Buffer {
public:
int16_t *mBuffer;
};
OutputTrack( const wp<ThreadBase>& thread,
DuplicatingThread *sourceThread,
uint32_t sampleRate,
uint32_t format,
uint32_t channelMask,
int frameCount);
~OutputTrack();
virtual status_t start();
virtual void stop();
bool write(int16_t* data, uint32_t frames);
bool bufferQueueEmpty() { return (mBufferQueue.size() == 0) ? true : false; }
bool isActive() { return mActive; }
wp<ThreadBase>& thread() { return mThread; }
private:
status_t obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs);
void clearBufferQueue();
// Maximum number of pending buffers allocated by OutputTrack::write()
static const uint8_t kMaxOverFlowBuffers = 10;
Vector < Buffer* > mBufferQueue;
AudioBufferProvider::Buffer mOutBuffer;
bool mActive;
DuplicatingThread* mSourceThread;
}; // end of OutputTrack
PlaybackThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device);
virtual ~PlaybackThread();
virtual status_t dump(int fd, const Vector<String16>& args);
// Thread virtuals
virtual status_t readyToRun();
virtual void onFirstRef();
virtual status_t initCheck() const { return (mOutput == NULL) ? NO_INIT : NO_ERROR; }
virtual uint32_t latency() const;
virtual status_t setMasterVolume(float value);
virtual status_t setMasterMute(bool muted);
virtual float masterVolume() const;
virtual bool masterMute() const;
virtual status_t setStreamVolume(int stream, float value);
virtual status_t setStreamMute(int stream, bool muted);
virtual float streamVolume(int stream) const;
virtual bool streamMute(int stream) const;
sp<Track> createTrack_l(
const sp<AudioFlinger::Client>& client,
int streamType,
uint32_t sampleRate,
uint32_t format,
uint32_t channelMask,
int frameCount,
const sp<IMemory>& sharedBuffer,
int sessionId,
status_t *status);
AudioStreamOut* getOutput();
AudioStreamOut* clearOutput();
virtual audio_stream_t* stream();
void suspend() { mSuspended++; }
void restore() { if (mSuspended) mSuspended--; }
bool isSuspended() { return (mSuspended != 0); }
virtual String8 getParameters(const String8& keys);
virtual void audioConfigChanged_l(int event, int param = 0);
virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames);
int16_t *mixBuffer() { 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);
virtual uint32_t getStrategyForSession_l(int sessionId);
void setStreamValid(int streamType, bool valid);
struct stream_type_t {
stream_type_t()
: volume(1.0f),
mute(false),
valid(true)
{
}
float volume;
bool mute;
bool valid;
};
protected:
int16_t* mMixBuffer;
int mSuspended;
int mBytesWritten;
bool mMasterMute;
SortedVector< wp<Track> > mActiveTracks;
virtual int getTrackName_l() = 0;
virtual void deleteTrackName_l(int name) = 0;
virtual uint32_t activeSleepTimeUs();
virtual uint32_t idleSleepTimeUs() = 0;
virtual uint32_t suspendSleepTimeUs() = 0;
private:
friend class AudioFlinger;
friend class OutputTrack;
friend class Track;
friend class TrackBase;
friend class MixerThread;
friend class DirectOutputThread;
friend class DuplicatingThread;
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 status_t dumpInternals(int fd, const Vector<String16>& args);
status_t dumpTracks(int fd, const Vector<String16>& args);
SortedVector< sp<Track> > mTracks;
// mStreamTypes[] uses 1 additionnal 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;
};
class MixerThread : public PlaybackThread {
public:
MixerThread (const sp<AudioFlinger>& audioFlinger,
AudioStreamOut* output,
int id,
uint32_t device);
virtual ~MixerThread();
// Thread virtuals
virtual bool threadLoop();
void invalidateTracks(int streamType);
virtual bool checkForNewParameters_l();
virtual status_t dumpInternals(int fd, const Vector<String16>& args);
protected:
uint32_t prepareTracks_l(const SortedVector< wp<Track> >& activeTracks,
Vector< sp<Track> > *tracksToRemove);
virtual int getTrackName_l();
virtual void deleteTrackName_l(int name);
virtual uint32_t idleSleepTimeUs();
virtual uint32_t suspendSleepTimeUs();
AudioMixer* mAudioMixer;
};
class DirectOutputThread : public PlaybackThread {
public:
DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device);
~DirectOutputThread();
// Thread virtuals
virtual bool threadLoop();
virtual bool checkForNewParameters_l();
protected:
virtual int getTrackName_l();
virtual void deleteTrackName_l(int name);
virtual uint32_t activeSleepTimeUs();
virtual uint32_t idleSleepTimeUs();
virtual uint32_t suspendSleepTimeUs();
private:
void applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp);
float mLeftVolFloat;
float mRightVolFloat;
uint16_t mLeftVolShort;
uint16_t mRightVolShort;
};
class DuplicatingThread : public MixerThread {
public:
DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, int id);
~DuplicatingThread();
// Thread virtuals
virtual bool threadLoop();
void addOutputTrack(MixerThread* thread);
void removeOutputTrack(MixerThread* thread);
uint32_t waitTimeMs() { return mWaitTimeMs; }
protected:
virtual uint32_t activeSleepTimeUs();
private:
bool outputsReady(SortedVector< sp<OutputTrack> > &outputTracks);
void updateWaitTime();
SortedVector < sp<OutputTrack> > mOutputTracks;
uint32_t mWaitTimeMs;
};
PlaybackThread *checkPlaybackThread_l(int output) const;
MixerThread *checkMixerThread_l(int output) const;
RecordThread *checkRecordThread_l(int input) const;
float streamVolumeInternal(int stream) const { return mStreamTypes[stream].volume; }
void audioConfigChanged_l(int event, int ioHandle, void *param2);
uint32_t nextUniqueId();
status_t moveEffectChain_l(int sessionId,
AudioFlinger::PlaybackThread *srcThread,
AudioFlinger::PlaybackThread *dstThread,
bool reRegister);
PlaybackThread *primaryPlaybackThread_l();
uint32_t primaryOutputDevice_l();
friend class AudioBuffer;
class TrackHandle : public android::BnAudioTrack {
public:
TrackHandle(const sp<PlaybackThread::Track>& track);
virtual ~TrackHandle();
virtual status_t start();
virtual void stop();
virtual void flush();
virtual void mute(bool);
virtual void pause();
virtual void setVolume(float left, float right);
virtual sp<IMemory> getCblk() const;
virtual status_t attachAuxEffect(int effectId);
virtual status_t onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
private:
sp<PlaybackThread::Track> mTrack;
};
friend class Client;
friend class PlaybackThread::Track;
void removeClient_l(pid_t pid);
void removeNotificationClient(pid_t pid);
// record thread
class RecordThread : public ThreadBase, public AudioBufferProvider
{
public:
// record track
class RecordTrack : public TrackBase {
public:
RecordTrack(const wp<ThreadBase>& thread,
const sp<Client>& client,
uint32_t sampleRate,
uint32_t format,
uint32_t channelMask,
int frameCount,
uint32_t flags,
int sessionId);
~RecordTrack();
virtual status_t start();
virtual void stop();
bool overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; }
bool setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; }
void dump(char* buffer, size_t size);
private:
friend class AudioFlinger;
friend class RecordThread;
RecordTrack(const RecordTrack&);
RecordTrack& operator = (const RecordTrack&);
virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
bool mOverflow;
};
RecordThread(const sp<AudioFlinger>& audioFlinger,
AudioStreamIn *input,
uint32_t sampleRate,
uint32_t channels,
int id,
uint32_t device);
~RecordThread();
virtual bool threadLoop();
virtual status_t readyToRun();
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,
int format,
int channelMask,
int frameCount,
uint32_t flags,
int sessionId,
status_t *status);
status_t start(RecordTrack* recordTrack);
void stop(RecordTrack* recordTrack);
status_t dump(int fd, const Vector<String16>& args);
AudioStreamIn* getInput();
AudioStreamIn* clearInput();
virtual audio_stream_t* stream();
virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
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);
RecordTrack* track();
private:
RecordThread();
AudioStreamIn *mInput;
RecordTrack* mTrack;
sp<RecordTrack> mActiveTrack;
Condition mStartStopCond;
AudioResampler *mResampler;
int32_t *mRsmpOutBuffer;
int16_t *mRsmpInBuffer;
size_t mRsmpInIndex;
size_t mInputBytes;
int mReqChannelCount;
uint32_t mReqSampleRate;
ssize_t mBytesRead;
};
class RecordHandle : public android::BnAudioRecord {
public:
RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack);
virtual ~RecordHandle();
virtual status_t start();
virtual void stop();
virtual sp<IMemory> getCblk() const;
virtual status_t onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
private:
sp<RecordThread::RecordTrack> mRecordTrack;
};
//--- Audio Effect Management
// EffectModule and EffectChain classes both have their own mutex to protect
// state changes or resource modifications. Always respect the following order
// if multiple mutexes must be acquired to avoid cross deadlock:
// AudioFlinger -> ThreadBase -> EffectChain -> EffectModule
// The EffectModule class is a wrapper object controlling the effect engine implementation
// in the effect library. It prevents concurrent calls to process() and command() functions
// from different client threads. It keeps a list of EffectHandle objects corresponding
// to all client applications using this effect and notifies applications of effect state,
// control or parameter changes. It manages the activation state machine to send appropriate
// reset, enable, disable commands to effect engine and provide volume
// ramping when effects are activated/deactivated.
// When controlling an auxiliary effect, the EffectModule also provides an input buffer used by
// the attached track(s) to accumulate their auxiliary channel.
class EffectModule: public RefBase {
public:
EffectModule(const wp<ThreadBase>& wThread,
const wp<AudioFlinger::EffectChain>& chain,
effect_descriptor_t *desc,
int id,
int sessionId);
~EffectModule();
enum effect_state {
IDLE,
RESTART,
STARTING,
ACTIVE,
STOPPING,
STOPPED,
DESTROYED
};
int id() { return mId; }
void process();
void updateState();
status_t command(uint32_t cmdCode,
uint32_t cmdSize,
void *pCmdData,
uint32_t *replySize,
void *pReplyData);
void reset_l();
status_t configure();
status_t init();
uint32_t state() {
return mState;
}
uint32_t status() {
return mStatus;
}
int sessionId() {
return mSessionId;
}
status_t setEnabled(bool enabled);
bool isEnabled();
bool isProcessEnabled();
void setInBuffer(int16_t *buffer) { mConfig.inputCfg.buffer.s16 = buffer; }
int16_t *inBuffer() { return mConfig.inputCfg.buffer.s16; }
void setOutBuffer(int16_t *buffer) { mConfig.outputCfg.buffer.s16 = buffer; }
int16_t *outBuffer() { return mConfig.outputCfg.buffer.s16; }
void setChain(const wp<EffectChain>& chain) { mChain = chain; }
void setThread(const wp<ThreadBase>& thread) { mThread = thread; }
wp<ThreadBase>& thread() { return mThread; }
status_t addHandle(sp<EffectHandle>& handle);
void disconnect(const wp<EffectHandle>& handle, bool unpiniflast);
size_t removeHandle (const wp<EffectHandle>& handle);
effect_descriptor_t& desc() { return mDescriptor; }
wp<EffectChain>& chain() { return mChain; }
status_t setDevice(uint32_t device);
status_t setVolume(uint32_t *left, uint32_t *right, bool controller);
status_t setMode(uint32_t mode);
status_t start();
status_t stop();
void setSuspended(bool suspended);
bool suspended();
sp<EffectHandle> controlHandle();
bool isPinned() { return mPinned; }
void unPin() { mPinned = false; }
status_t dump(int fd, const Vector<String16>& args);
protected:
friend class EffectHandle;
friend class AudioFlinger;
bool mPinned;
// Maximum time allocated to effect engines to complete the turn off sequence
static const uint32_t MAX_DISABLE_TIME_MS = 10000;
EffectModule(const EffectModule&);
EffectModule& operator = (const EffectModule&);
status_t start_l();
status_t stop_l();
Mutex mLock; // mutex for process, commands and handles list protection
wp<ThreadBase> mThread; // parent thread
wp<EffectChain> mChain; // parent effect chain
int mId; // this instance unique ID
int mSessionId; // audio session ID
effect_descriptor_t mDescriptor;// effect descriptor received from effect engine
effect_config_t mConfig; // input and output audio configuration
effect_handle_t mEffectInterface; // Effect module C API
status_t mStatus; // initialization status
uint32_t mState; // current activation state (effect_state)
Vector< wp<EffectHandle> > mHandles; // list of client handles
uint32_t mMaxDisableWaitCnt; // maximum grace period before forcing an effect off after
// sending disable command.
uint32_t mDisableWaitCnt; // current process() calls count during disable period.
bool mSuspended; // effect is suspended: temporarily disabled by framework
};
// The EffectHandle class implements the IEffect interface. It provides resources
// to receive parameter updates, keeps track of effect control
// ownership and state and has a pointer to the EffectModule object it is controlling.
// There is one EffectHandle object for each application controlling (or using)
// an effect module.
// The EffectHandle is obtained by calling AudioFlinger::createEffect().
class EffectHandle: public android::BnEffect {
public:
EffectHandle(const sp<EffectModule>& effect,
const sp<AudioFlinger::Client>& client,
const sp<IEffectClient>& effectClient,
int32_t priority);
virtual ~EffectHandle();
// IEffect
virtual status_t enable();
virtual status_t disable();
virtual status_t command(uint32_t cmdCode,
uint32_t cmdSize,
void *pCmdData,
uint32_t *replySize,
void *pReplyData);
virtual void disconnect();
virtual void disconnect(bool unpiniflast);
virtual sp<IMemory> getCblk() const;
virtual status_t onTransact(uint32_t code, const Parcel& data,
Parcel* reply, uint32_t flags);
// Give or take control of effect module
// - hasControl: true if control is given, false if removed
// - signal: true client app should be signaled of change, false otherwise
// - enabled: state of the effect when control is passed
void setControl(bool hasControl, bool signal, bool enabled);
void commandExecuted(uint32_t cmdCode,
uint32_t cmdSize,
void *pCmdData,
uint32_t replySize,
void *pReplyData);
void setEnabled(bool enabled);
bool enabled() { return mEnabled; }
// Getters
int id() { return mEffect->id(); }
int priority() { return mPriority; }
bool hasControl() { return mHasControl; }
sp<EffectModule> effect() { return mEffect; }
void dump(char* buffer, size_t size);
protected:
friend class AudioFlinger;
friend class EffectModule;
EffectHandle(const EffectHandle&);
EffectHandle& operator =(const EffectHandle&);
sp<EffectModule> mEffect; // pointer to controlled EffectModule
sp<IEffectClient> mEffectClient; // callback interface for client notifications
sp<Client> mClient; // client for shared memory allocation
sp<IMemory> mCblkMemory; // shared memory for control block
effect_param_cblk_t* mCblk; // control block for deferred parameter setting via shared memory
uint8_t* mBuffer; // pointer to parameter area in shared memory
int mPriority; // client application priority to control the effect
bool mHasControl; // true if this handle is controlling the effect
bool mEnabled; // cached enable state: needed when the effect is
// restored after being suspended
};
// the EffectChain class represents a group of effects associated to one audio session.
// There can be any number of EffectChain objects per output mixer thread (PlaybackThread).
// The EffecChain with session ID 0 contains global effects applied to the output mix.
// Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks)
// are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding
// in the effect process order. When attached to a track (session ID != 0), it also provide it's own
// input buffer used by the track as accumulation buffer.
class EffectChain: public RefBase {
public:
EffectChain(const wp<ThreadBase>& wThread, int sessionId);
~EffectChain();
// special key used for an entry in mSuspendedEffects keyed vector
// corresponding to a suspend all request.
static const int kKeyForSuspendAll = 0;
// minimum duration during which we force calling effect process when last track on
// a session is stopped or removed to allow effect tail to be rendered
static const int kProcessTailDurationMs = 1000;
void process_l();
void lock() {
mLock.lock();
}
void unlock() {
mLock.unlock();
}
status_t addEffect_l(const sp<EffectModule>& handle);
size_t removeEffect_l(const sp<EffectModule>& handle);
int sessionId() { return mSessionId; }
void setSessionId(int sessionId) { mSessionId = sessionId; }
sp<EffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor);
sp<EffectModule> getEffectFromId_l(int id);
sp<EffectModule> getEffectFromType_l(const effect_uuid_t *type);
bool setVolume_l(uint32_t *left, uint32_t *right);
void setDevice_l(uint32_t device);
void setMode_l(uint32_t mode);
void setInBuffer(int16_t *buffer, bool ownsBuffer = false) {
mInBuffer = buffer;
mOwnInBuffer = ownsBuffer;
}
int16_t *inBuffer() {
return mInBuffer;
}
void setOutBuffer(int16_t *buffer) {
mOutBuffer = buffer;
}
int16_t *outBuffer() {
return mOutBuffer;
}
void incTrackCnt() { android_atomic_inc(&mTrackCnt); }
void decTrackCnt() { android_atomic_dec(&mTrackCnt); }
int32_t trackCnt() { return mTrackCnt;}
void incActiveTrackCnt() { android_atomic_inc(&mActiveTrackCnt);
mTailBufferCount = mMaxTailBuffers; }
void decActiveTrackCnt() { android_atomic_dec(&mActiveTrackCnt); }
int32_t activeTrackCnt() { return mActiveTrackCnt;}
uint32_t strategy() { return mStrategy; }
void setStrategy(uint32_t strategy)
{ mStrategy = strategy; }
// suspend effect of the given type
void setEffectSuspended_l(const effect_uuid_t *type,
bool suspend);
// suspend all eligible effects
void setEffectSuspendedAll_l(bool suspend);
// check if effects should be suspend or restored when a given effect is enable or disabled
void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect,
bool enabled);
status_t dump(int fd, const Vector<String16>& args);
protected:
friend class AudioFlinger;
EffectChain(const EffectChain&);
EffectChain& operator =(const EffectChain&);
class SuspendedEffectDesc : public RefBase {
public:
SuspendedEffectDesc() : mRefCount(0) {}
int mRefCount;
effect_uuid_t mType;
wp<EffectModule> mEffect;
};
// get a list of effect modules to suspend when an effect of the type
// passed is enabled.
Vector< sp<EffectModule> > getSuspendEligibleEffects();
// get an effect module if it is currently enable
sp<EffectModule> getEffectIfEnabled(const effect_uuid_t *type);
// true if the effect whose descriptor is passed can be suspended
// OEMs can modify the rules implemented in this method to exclude specific effect
// types or implementations from the suspend/restore mechanism.
bool isEffectEligibleForSuspend(const effect_descriptor_t& desc);
wp<ThreadBase> mThread; // parent mixer thread
Mutex mLock; // mutex protecting effect list
Vector<sp<EffectModule> > mEffects; // list of effect modules
int mSessionId; // audio session ID
int16_t *mInBuffer; // chain input buffer
int16_t *mOutBuffer; // chain output buffer
volatile int32_t mActiveTrackCnt; // number of active tracks connected
volatile int32_t mTrackCnt; // number of tracks connected
int32_t mTailBufferCount; // current effect tail buffer count
int32_t mMaxTailBuffers; // maximum effect tail buffers
bool mOwnInBuffer; // true if the chain owns its input buffer
int mVolumeCtrlIdx; // index of insert effect having control over volume
uint32_t mLeftVolume; // previous volume on left channel
uint32_t mRightVolume; // previous volume on right channel
uint32_t mNewLeftVolume; // new volume on left channel
uint32_t mNewRightVolume; // new volume on right channel
uint32_t mStrategy; // strategy for this effect chain
// mSuspendedEffects lists all effect currently suspended in the chain
// use effect type UUID timelow field as key. There is no real risk of identical
// timeLow fields among effect type UUIDs.
KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects;
};
struct AudioStreamOut {
audio_hw_device_t *hwDev;
audio_stream_out_t *stream;
AudioStreamOut(audio_hw_device_t *dev, audio_stream_out_t *out) :
hwDev(dev), stream(out) {}
};
struct AudioStreamIn {
audio_hw_device_t *hwDev;
audio_stream_in_t *stream;
AudioStreamIn(audio_hw_device_t *dev, audio_stream_in_t *in) :
hwDev(dev), stream(in) {}
};
struct AudioSessionRef {
int sessionid;
pid_t pid;
int cnt;
};
friend class RecordThread;
friend class PlaybackThread;
mutable Mutex mLock;
DefaultKeyedVector< pid_t, wp<Client> > mClients;
mutable Mutex mHardwareLock;
audio_hw_device_t* mPrimaryHardwareDev;
Vector<audio_hw_device_t*> mAudioHwDevs;
mutable int mHardwareStatus;
DefaultKeyedVector< int, sp<PlaybackThread> > mPlaybackThreads;
PlaybackThread::stream_type_t mStreamTypes[AUDIO_STREAM_CNT];
float mMasterVolume;
bool mMasterMute;
DefaultKeyedVector< int, sp<RecordThread> > mRecordThreads;
DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients;
volatile int32_t mNextUniqueId;
uint32_t mMode;
bool mBtNrecIsOff;
Vector<AudioSessionRef*> mAudioSessionRefs;
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_AUDIO_FLINGER_H