2 * Copyright (C) 2009 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <sys/types.h>
20 #include <cutils/config_utils.h>
21 #include <cutils/misc.h>
22 #include <utils/Timers.h>
23 #include <utils/Errors.h>
24 #include <utils/KeyedVector.h>
25 #include <utils/SortedVector.h>
26 #include <hardware_legacy/AudioPolicyInterface.h>
29 namespace android_audio_legacy {
30 using android::KeyedVector;
31 using android::DefaultKeyedVector;
32 using android::SortedVector;
34 // ----------------------------------------------------------------------------
36 #define MAX_DEVICE_ADDRESS_LEN 20
37 // Attenuation applied to STRATEGY_SONIFICATION streams when a headset is connected: 6dB
38 #define SONIFICATION_HEADSET_VOLUME_FACTOR 0.5
39 // Min volume for STRATEGY_SONIFICATION streams when limited by music volume: -36dB
40 #define SONIFICATION_HEADSET_VOLUME_MIN 0.016
41 // Time in milliseconds during which we consider that music is still active after a music
42 // track was stopped - see computeVolume()
43 #define SONIFICATION_HEADSET_MUSIC_DELAY 5000
44 // Time in milliseconds after media stopped playing during which we consider that the
45 // sonification should be as unobtrusive as during the time media was playing.
46 #define SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY 5000
47 // Time in milliseconds during witch some streams are muted while the audio path
49 #define MUTE_TIME_MS 2000
51 #define NUM_TEST_OUTPUTS 5
53 #define NUM_VOL_CURVE_KNEES 2
55 // Default minimum length allowed for offloading a compressed track
56 // Can be overridden by the audio.offload.min.duration.secs property
57 #define OFFLOAD_DEFAULT_MIN_DURATION_SECS 60
59 // ----------------------------------------------------------------------------
60 // AudioPolicyManagerBase implements audio policy manager behavior common to all platforms.
61 // Each platform must implement an AudioPolicyManager class derived from AudioPolicyManagerBase
62 // and override methods for which the platform specific behavior differs from the implementation
63 // in AudioPolicyManagerBase. Even if no specific behavior is required, the AudioPolicyManager
64 // class must be implemented as well as the class factory function createAudioPolicyManager()
65 // and provided in a shared library libaudiopolicy.so.
66 // ----------------------------------------------------------------------------
68 class AudioPolicyManagerBase: public AudioPolicyInterface
69 #ifdef AUDIO_POLICY_TEST
71 #endif //AUDIO_POLICY_TEST
75 AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface);
76 virtual ~AudioPolicyManagerBase();
78 // AudioPolicyInterface
79 virtual status_t setDeviceConnectionState(audio_devices_t device,
80 AudioSystem::device_connection_state state,
81 const char *device_address);
82 virtual AudioSystem::device_connection_state getDeviceConnectionState(audio_devices_t device,
83 const char *device_address);
84 virtual void setPhoneState(int state);
85 virtual void setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config);
86 virtual AudioSystem::forced_config getForceUse(AudioSystem::force_use usage);
87 virtual void setSystemProperty(const char* property, const char* value);
88 virtual status_t initCheck();
89 virtual audio_io_handle_t getOutput(AudioSystem::stream_type stream,
90 uint32_t samplingRate,
91 audio_format_t format,
92 audio_channel_mask_t channelMask,
93 AudioSystem::output_flags flags,
94 const audio_offload_info_t *offloadInfo);
95 virtual status_t startOutput(audio_io_handle_t output,
96 AudioSystem::stream_type stream,
98 virtual status_t stopOutput(audio_io_handle_t output,
99 AudioSystem::stream_type stream,
101 virtual void releaseOutput(audio_io_handle_t output);
102 virtual audio_io_handle_t getInput(int inputSource,
103 uint32_t samplingRate,
104 audio_format_t format,
105 audio_channel_mask_t channelMask,
106 AudioSystem::audio_in_acoustics acoustics);
108 // indicates to the audio policy manager that the input starts being used.
109 virtual status_t startInput(audio_io_handle_t input);
111 // indicates to the audio policy manager that the input stops being used.
112 virtual status_t stopInput(audio_io_handle_t input);
113 virtual void releaseInput(audio_io_handle_t input);
114 virtual void closeAllInputs();
115 virtual void initStreamVolume(AudioSystem::stream_type stream,
118 virtual status_t setStreamVolumeIndex(AudioSystem::stream_type stream,
120 audio_devices_t device);
121 virtual status_t getStreamVolumeIndex(AudioSystem::stream_type stream,
123 audio_devices_t device);
125 // return the strategy corresponding to a given stream type
126 virtual uint32_t getStrategyForStream(AudioSystem::stream_type stream);
128 // return the enabled output devices for the given stream type
129 virtual audio_devices_t getDevicesForStream(AudioSystem::stream_type stream);
131 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc = NULL);
132 virtual status_t registerEffect(const effect_descriptor_t *desc,
133 audio_io_handle_t io,
137 virtual status_t unregisterEffect(int id);
138 virtual status_t setEffectEnabled(int id, bool enabled);
140 virtual bool isStreamActive(int stream, uint32_t inPastMs = 0) const;
141 // return whether a stream is playing remotely, override to change the definition of
142 // local/remote playback, used for instance by notification manager to not make
143 // media players lose audio focus when not playing locally
144 virtual bool isStreamActiveRemotely(int stream, uint32_t inPastMs = 0) const;
145 virtual bool isSourceActive(audio_source_t source) const;
147 virtual status_t dump(int fd);
149 virtual bool isOffloadSupported(const audio_offload_info_t& offloadInfo);
153 enum routing_strategy {
156 STRATEGY_SONIFICATION,
157 STRATEGY_SONIFICATION_RESPECTFUL,
159 STRATEGY_ENFORCED_AUDIBLE,
163 // 4 points to define the volume attenuation curve, each characterized by the volume
164 // index (from 0 to 100) at which they apply, and the attenuation in dB at that index.
165 // we use 100 steps to avoid rounding errors when computing the volume in volIndexToAmpl()
167 enum { VOLMIN = 0, VOLKNEE1 = 1, VOLKNEE2 = 2, VOLMAX = 3, VOLCNT = 4};
169 class VolumeCurvePoint
173 float mDBAttenuation;
176 // device categories used for volume curve management.
177 enum device_category {
178 DEVICE_CATEGORY_HEADSET,
179 DEVICE_CATEGORY_SPEAKER,
180 DEVICE_CATEGORY_EARPIECE,
188 HwModule(const char *name);
193 const char *const mName; // base name of the audio HW module (primary, a2dp ...)
194 audio_module_handle_t mHandle;
195 Vector <IOProfile *> mOutputProfiles; // output profiles exposed by this module
196 Vector <IOProfile *> mInputProfiles; // input profiles exposed by this module
199 // the IOProfile class describes the capabilities of an output or input stream.
200 // It is currently assumed that all combination of listed parameters are supported.
201 // It is used by the policy manager to determine if an output or input is suitable for
202 // a given use case, open/close it accordingly and connect/disconnect audio tracks
207 IOProfile(HwModule *module);
210 bool isCompatibleProfile(audio_devices_t device,
211 uint32_t samplingRate,
212 audio_format_t format,
213 audio_channel_mask_t channelMask,
214 audio_output_flags_t flags) const;
219 // by convention, "0' in the first entry in mSamplingRates, mChannelMasks or mFormats
220 // indicates the supported parameters should be read from the output stream
221 // after it is opened for the first time
222 Vector <uint32_t> mSamplingRates; // supported sampling rates
223 Vector <audio_channel_mask_t> mChannelMasks; // supported channel masks
224 Vector <audio_format_t> mFormats; // supported audio formats
225 audio_devices_t mSupportedDevices; // supported devices (devices this output can be
227 audio_output_flags_t mFlags; // attribute flags (e.g primary output,
228 // direct output...). For outputs only.
229 HwModule *mModule; // audio HW module exposing this I/O stream
232 // default volume curve
233 static const VolumeCurvePoint sDefaultVolumeCurve[AudioPolicyManagerBase::VOLCNT];
234 // default volume curve for media strategy
235 static const VolumeCurvePoint sDefaultMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT];
236 // volume curve for media strategy on speakers
237 static const VolumeCurvePoint sSpeakerMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT];
238 // volume curve for sonification strategy on speakers
239 static const VolumeCurvePoint sSpeakerSonificationVolumeCurve[AudioPolicyManagerBase::VOLCNT];
240 static const VolumeCurvePoint sSpeakerSonificationVolumeCurveDrc[AudioPolicyManagerBase::VOLCNT];
241 static const VolumeCurvePoint sDefaultSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT];
242 static const VolumeCurvePoint sDefaultSystemVolumeCurveDrc[AudioPolicyManagerBase::VOLCNT];
243 static const VolumeCurvePoint sHeadsetSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT];
244 static const VolumeCurvePoint sDefaultVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT];
245 static const VolumeCurvePoint sSpeakerVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT];
246 // default volume curves per stream and device category. See initializeVolumeCurves()
247 static const VolumeCurvePoint *sVolumeProfiles[AudioSystem::NUM_STREAM_TYPES][DEVICE_CATEGORY_CNT];
249 // descriptor for audio outputs. Used to maintain current configuration of each opened audio output
250 // and keep track of the usage of this output by each audio stream type.
251 class AudioOutputDescriptor
254 AudioOutputDescriptor(const IOProfile *profile);
256 status_t dump(int fd);
258 audio_devices_t device() const;
259 void changeRefCount(AudioSystem::stream_type stream, int delta);
261 bool isDuplicated() const { return (mOutput1 != NULL && mOutput2 != NULL); }
262 audio_devices_t supportedDevices();
264 bool sharesHwModuleWith(const AudioOutputDescriptor *outputDesc);
265 bool isActive(uint32_t inPastMs = 0) const;
266 bool isStreamActive(AudioSystem::stream_type stream,
267 uint32_t inPastMs = 0,
268 nsecs_t sysTime = 0) const;
269 bool isStrategyActive(routing_strategy strategy,
270 uint32_t inPastMs = 0,
271 nsecs_t sysTime = 0) const;
273 audio_io_handle_t mId; // output handle
274 uint32_t mSamplingRate; //
275 audio_format_t mFormat; //
276 audio_channel_mask_t mChannelMask; // output configuration
277 uint32_t mLatency; //
278 audio_output_flags_t mFlags; //
279 audio_devices_t mDevice; // current device this output is routed to
280 uint32_t mRefCount[AudioSystem::NUM_STREAM_TYPES]; // number of streams of each type using this output
281 nsecs_t mStopTime[AudioSystem::NUM_STREAM_TYPES];
282 AudioOutputDescriptor *mOutput1; // used by duplicated outputs: first output
283 AudioOutputDescriptor *mOutput2; // used by duplicated outputs: second output
284 float mCurVolume[AudioSystem::NUM_STREAM_TYPES]; // current stream volume
285 int mMuteCount[AudioSystem::NUM_STREAM_TYPES]; // mute request counter
286 const IOProfile *mProfile; // I/O profile this output derives from
287 bool mStrategyMutedByDevice[NUM_STRATEGIES]; // strategies muted because of incompatible
288 // device selection. See checkDeviceMuteStrategies()
289 uint32_t mDirectOpenCount; // number of clients using this output (direct outputs only)
290 bool mForceRouting; // Next routing for this output will be forced as current device routed is null
293 // descriptor for audio inputs. Used to maintain current configuration of each opened audio input
294 // and keep track of the usage of this input.
295 class AudioInputDescriptor
298 AudioInputDescriptor(const IOProfile *profile);
300 status_t dump(int fd);
302 audio_io_handle_t mId; // input handle
303 uint32_t mSamplingRate; //
304 audio_format_t mFormat; // input configuration
305 audio_channel_mask_t mChannelMask; //
306 audio_devices_t mDevice; // current device this input is routed to
307 uint32_t mRefCount; // number of AudioRecord clients using this output
308 int mInputSource; // input source selected by application (mediarecorder.h)
309 const IOProfile *mProfile; // I/O profile this output derives from
312 // stream descriptor used for volume control
313 class StreamDescriptor
318 int getVolumeIndex(audio_devices_t device);
321 int mIndexMin; // min volume index
322 int mIndexMax; // max volume index
323 KeyedVector<audio_devices_t, int> mIndexCur; // current volume index per device
324 bool mCanBeMuted; // true is the stream can be muted
326 const VolumeCurvePoint *mVolumeCurve[DEVICE_CATEGORY_CNT];
329 // stream descriptor used for volume control
330 class EffectDescriptor
334 status_t dump(int fd);
336 int mIo; // io the effect is attached to
337 routing_strategy mStrategy; // routing strategy the effect is associated to
338 int mSession; // audio session the effect is on
339 effect_descriptor_t mDesc; // effect descriptor
340 bool mEnabled; // enabled state: CPU load being used or not
343 void addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc);
344 void addInput(audio_io_handle_t id, AudioInputDescriptor *inputDesc);
346 // return the strategy corresponding to a given stream type
347 static routing_strategy getStrategy(AudioSystem::stream_type stream);
349 // return appropriate device for streams handled by the specified strategy according to current
350 // phone state, connected devices...
351 // if fromCache is true, the device is returned from mDeviceForStrategy[],
352 // otherwise it is determine by current state
353 // (device connected,phone state, force use, a2dp output...)
355 // 1 speed up process when the state is stable (when starting or stopping an output)
356 // 2 access to either current device selection (fromCache == true) or
357 // "future" device selection (fromCache == false) when called from a context
358 // where conditions are changing (setDeviceConnectionState(), setPhoneState()...) AND
359 // before updateDevicesAndOutputs() is called.
360 virtual audio_devices_t getDeviceForStrategy(routing_strategy strategy,
363 // change the route of the specified output. Returns the number of ms we have slept to
364 // allow new routing to take effect in certain cases.
365 uint32_t setOutputDevice(audio_io_handle_t output,
366 audio_devices_t device,
370 // select input device corresponding to requested audio source
371 virtual audio_devices_t getDeviceForInputSource(int inputSource);
373 // return io handle of active input or 0 if no input is active
374 // Only considers inputs from physical devices (e.g. main mic, headset mic) when
375 // ignoreVirtualInputs is true.
376 audio_io_handle_t getActiveInput(bool ignoreVirtualInputs = true);
378 // initialize volume curves for each strategy and device category
379 void initializeVolumeCurves();
381 // compute the actual volume for a given stream according to the requested index and a particular
383 virtual float computeVolume(int stream, int index, audio_io_handle_t output, audio_devices_t device);
385 // check that volume change is permitted, compute and send new volume to audio hardware
386 status_t checkAndSetVolume(int stream, int index, audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false);
388 // apply all stream volumes to the specified output and device
389 void applyStreamVolumes(audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false);
391 // Mute or unmute all streams handled by the specified strategy on the specified output
392 void setStrategyMute(routing_strategy strategy,
394 audio_io_handle_t output,
396 audio_devices_t device = (audio_devices_t)0);
398 // Mute or unmute the stream on the specified output
399 void setStreamMute(int stream,
401 audio_io_handle_t output,
403 audio_devices_t device = (audio_devices_t)0);
405 // handle special cases for sonification strategy while in call: mute streams or replace by
406 // a special tone in the device used for communication
407 void handleIncallSonification(int stream, bool starting, bool stateChange);
409 // true if device is in a telephony or VoIP call
410 virtual bool isInCall();
412 // true if given state represents a device in a telephony or VoIP call
413 virtual bool isStateInCall(int state);
415 // when a device is connected, checks if an open output can be routed
416 // to this device. If none is open, tries to open one of the available outputs.
417 // Returns an output suitable to this device or 0.
418 // when a device is disconnected, checks if an output is not used any more and
419 // returns its handle if any.
420 // transfers the audio tracks and effects from one output thread to another accordingly.
421 status_t checkOutputsForDevice(audio_devices_t device,
422 AudioSystem::device_connection_state state,
423 SortedVector<audio_io_handle_t>& outputs,
424 const String8 paramStr);
426 status_t checkInputsForDevice(audio_devices_t device,
427 AudioSystem::device_connection_state state,
428 SortedVector<audio_io_handle_t>& inputs,
429 const String8 paramStr);
431 // close an output and its companion duplicating output.
432 void closeOutput(audio_io_handle_t output);
434 // checks and if necessary changes outputs used for all strategies.
435 // must be called every time a condition that affects the output choice for a given strategy
436 // changes: connected device, phone state, force use...
437 // Must be called before updateDevicesAndOutputs()
438 void checkOutputForStrategy(routing_strategy strategy);
440 // Same as checkOutputForStrategy() but for a all strategies in order of priority
441 void checkOutputForAllStrategies();
443 // manages A2DP output suspend/restore according to phone state and BT SCO usage
444 void checkA2dpSuspend();
446 // returns the A2DP output handle if it is open or 0 otherwise
447 audio_io_handle_t getA2dpOutput();
449 // selects the most appropriate device on output for current state
450 // must be called every time a condition that affects the device choice for a given output is
451 // changed: connected device, phone state, force use, output start, output stop..
452 // see getDeviceForStrategy() for the use of fromCache parameter
454 audio_devices_t getNewDevice(audio_io_handle_t output, bool fromCache);
455 // updates cache of device used by all strategies (mDeviceForStrategy[])
456 // must be called every time a condition that affects the device choice for a given strategy is
457 // changed: connected device, phone state, force use...
458 // cached values are used by getDeviceForStrategy() if parameter fromCache is true.
459 // Must be called after checkOutputForAllStrategies()
461 void updateDevicesAndOutputs();
463 virtual uint32_t getMaxEffectsCpuLoad();
464 virtual uint32_t getMaxEffectsMemory();
465 #ifdef AUDIO_POLICY_TEST
466 virtual bool threadLoop();
468 int testOutputIndex(audio_io_handle_t output);
469 #endif //AUDIO_POLICY_TEST
471 status_t setEffectEnabled(EffectDescriptor *pDesc, bool enabled);
473 // returns the category the device belongs to with regard to volume curve management
474 static device_category getDeviceCategory(audio_devices_t device);
476 // extract one device relevant for volume control from multiple device selection
477 static audio_devices_t getDeviceForVolume(audio_devices_t device);
479 SortedVector<audio_io_handle_t> getOutputsForDevice(audio_devices_t device,
480 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> openOutputs);
481 bool vectorsEqual(SortedVector<audio_io_handle_t>& outputs1,
482 SortedVector<audio_io_handle_t>& outputs2);
484 // mute/unmute strategies using an incompatible device combination
485 // if muting, wait for the audio in pcm buffer to be drained before proceeding
486 // if unmuting, unmute only after the specified delay
487 // Returns the number of ms waited
488 uint32_t checkDeviceMuteStrategies(AudioOutputDescriptor *outputDesc,
489 audio_devices_t prevDevice,
492 audio_io_handle_t selectOutput(const SortedVector<audio_io_handle_t>& outputs,
493 AudioSystem::output_flags flags);
494 IOProfile *getInputProfile(audio_devices_t device,
495 uint32_t samplingRate,
496 audio_format_t format,
497 audio_channel_mask_t channelMask);
498 IOProfile *getProfileForDirectOutput(audio_devices_t device,
499 uint32_t samplingRate,
500 audio_format_t format,
501 audio_channel_mask_t channelMask,
502 audio_output_flags_t flags);
504 audio_io_handle_t selectOutputForEffects(const SortedVector<audio_io_handle_t>& outputs);
506 bool isNonOffloadableEffectEnabled();
509 // Audio policy configuration file parsing (audio_policy.conf)
511 static uint32_t stringToEnum(const struct StringToEnum *table,
514 static bool stringToBool(const char *value);
515 static audio_output_flags_t parseFlagNames(char *name);
516 static audio_devices_t parseDeviceNames(char *name);
517 void loadSamplingRates(char *name, IOProfile *profile);
518 void loadFormats(char *name, IOProfile *profile);
519 void loadOutChannels(char *name, IOProfile *profile);
520 void loadInChannels(char *name, IOProfile *profile);
521 status_t loadOutput(cnode *root, HwModule *module);
522 status_t loadInput(cnode *root, HwModule *module);
523 void loadHwModule(cnode *root);
524 void loadHwModules(cnode *root);
525 void loadGlobalConfig(cnode *root);
526 status_t loadAudioPolicyConfig(const char *path);
527 void defaultAudioPolicyConfig(void);
530 AudioPolicyClientInterface *mpClientInterface; // audio policy client interface
531 audio_io_handle_t mPrimaryOutput; // primary output handle
532 // list of descriptors for outputs currently opened
533 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mOutputs;
534 // copy of mOutputs before setDeviceConnectionState() opens new outputs
535 // reset to mOutputs when updateDevicesAndOutputs() is called.
536 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mPreviousOutputs;
538 // list of input descriptors currently opened
539 DefaultKeyedVector<audio_io_handle_t, AudioInputDescriptor *> mInputs;
541 audio_devices_t mAvailableOutputDevices; // bit field of all available output devices
542 audio_devices_t mAvailableInputDevices; // bit field of all available input devices
543 // without AUDIO_DEVICE_BIT_IN to allow direct bit
545 int mPhoneState; // current phone state
546 AudioSystem::forced_config mForceUse[AudioSystem::NUM_FORCE_USE]; // current forced use configuration
548 StreamDescriptor mStreams[AudioSystem::NUM_STREAM_TYPES]; // stream descriptors for volume control
549 String8 mA2dpDeviceAddress; // A2DP device MAC address
550 String8 mScoDeviceAddress; // SCO device MAC address
551 String8 mUsbOutCardAndDevice; // USB audio ALSA card and device numbers:
552 // card=<card_number>;device=<><device_number>
553 bool mLimitRingtoneVolume; // limit ringtone volume to music volume if headset connected
554 audio_devices_t mDeviceForStrategy[NUM_STRATEGIES];
555 float mLastVoiceVolume; // last voice volume value sent to audio HAL
557 // Maximum CPU load allocated to audio effects in 0.1 MIPS (ARMv5TE, 0 WS memory) units
558 static const uint32_t MAX_EFFECTS_CPU_LOAD = 1000;
559 // Maximum memory allocated to audio effects in KB
560 static const uint32_t MAX_EFFECTS_MEMORY = 512;
561 uint32_t mTotalEffectsCpuLoad; // current CPU load used by effects
562 uint32_t mTotalEffectsMemory; // current memory used by effects
563 KeyedVector<int, EffectDescriptor *> mEffects; // list of registered audio effects
564 bool mA2dpSuspended; // true if A2DP output is suspended
565 bool mHasA2dp; // true on platforms with support for bluetooth A2DP
566 bool mHasUsb; // true on platforms with support for USB audio
567 bool mHasRemoteSubmix; // true on platforms with support for remote presentation of a submix
568 audio_devices_t mAttachedOutputDevices; // output devices always available on the platform
569 audio_devices_t mDefaultOutputDevice; // output device selected by default at boot time
570 // (must be in mAttachedOutputDevices)
571 bool mSpeakerDrcEnabled;// true on devices that use DRC on the DEVICE_CATEGORY_SPEAKER path
572 // to boost soft sounds, used to adjust volume curves accordingly
574 Vector <HwModule *> mHwModules;
576 #ifdef AUDIO_POLICY_TEST
578 Condition mWaitWorkCV;
582 audio_io_handle_t mTestOutputs[NUM_TEST_OUTPUTS];
584 uint32_t mTestDevice;
585 uint32_t mTestSamplingRate;
586 uint32_t mTestFormat;
587 uint32_t mTestChannels;
588 uint32_t mTestLatencyMs;
589 #endif //AUDIO_POLICY_TEST
592 static float volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc,
594 // updates device caching and output for streams that can influence the
595 // routing of notifications
596 void handleNotificationRoutingForStream(AudioSystem::stream_type stream);
597 static bool isVirtualInputDevice(audio_devices_t device);