blob: 1ff409ec38e0bf308c0029580eb429f39a94d305 [file] [log] [blame]
Eric Laurente552edb2014-03-10 17:42:56 -07001/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
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
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
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.
15 */
16
17
18#include <stdint.h>
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>
27
28
29namespace android_audio_legacy {
30 using android::KeyedVector;
31 using android::DefaultKeyedVector;
32 using android::SortedVector;
33
34// ----------------------------------------------------------------------------
35
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
48// is switched
49#define MUTE_TIME_MS 2000
50
51#define NUM_TEST_OUTPUTS 5
52
53#define NUM_VOL_CURVE_KNEES 2
54
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
58
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// ----------------------------------------------------------------------------
67
68class AudioPolicyManagerBase: public AudioPolicyInterface
69#ifdef AUDIO_POLICY_TEST
70 , public Thread
71#endif //AUDIO_POLICY_TEST
72{
73
74public:
75 AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface);
76 virtual ~AudioPolicyManagerBase();
77
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,
97 int session = 0);
98 virtual status_t stopOutput(audio_io_handle_t output,
99 AudioSystem::stream_type stream,
100 int session = 0);
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);
107
108 // indicates to the audio policy manager that the input starts being used.
109 virtual status_t startInput(audio_io_handle_t input);
110
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 initStreamVolume(AudioSystem::stream_type stream,
115 int indexMin,
116 int indexMax);
117 virtual status_t setStreamVolumeIndex(AudioSystem::stream_type stream,
118 int index,
119 audio_devices_t device);
120 virtual status_t getStreamVolumeIndex(AudioSystem::stream_type stream,
121 int *index,
122 audio_devices_t device);
123
124 // return the strategy corresponding to a given stream type
125 virtual uint32_t getStrategyForStream(AudioSystem::stream_type stream);
126
127 // return the enabled output devices for the given stream type
128 virtual audio_devices_t getDevicesForStream(AudioSystem::stream_type stream);
129
130 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc = NULL);
131 virtual status_t registerEffect(const effect_descriptor_t *desc,
132 audio_io_handle_t io,
133 uint32_t strategy,
134 int session,
135 int id);
136 virtual status_t unregisterEffect(int id);
137 virtual status_t setEffectEnabled(int id, bool enabled);
138
139 virtual bool isStreamActive(int stream, uint32_t inPastMs = 0) const;
140 // return whether a stream is playing remotely, override to change the definition of
141 // local/remote playback, used for instance by notification manager to not make
142 // media players lose audio focus when not playing locally
143 virtual bool isStreamActiveRemotely(int stream, uint32_t inPastMs = 0) const;
144 virtual bool isSourceActive(audio_source_t source) const;
145
146 virtual status_t dump(int fd);
147
148 virtual bool isOffloadSupported(const audio_offload_info_t& offloadInfo);
149
150protected:
151
152 enum routing_strategy {
153 STRATEGY_MEDIA,
154 STRATEGY_PHONE,
155 STRATEGY_SONIFICATION,
156 STRATEGY_SONIFICATION_RESPECTFUL,
157 STRATEGY_DTMF,
158 STRATEGY_ENFORCED_AUDIBLE,
159 NUM_STRATEGIES
160 };
161
162 // 4 points to define the volume attenuation curve, each characterized by the volume
163 // index (from 0 to 100) at which they apply, and the attenuation in dB at that index.
164 // we use 100 steps to avoid rounding errors when computing the volume in volIndexToAmpl()
165
166 enum { VOLMIN = 0, VOLKNEE1 = 1, VOLKNEE2 = 2, VOLMAX = 3, VOLCNT = 4};
167
168 class VolumeCurvePoint
169 {
170 public:
171 int mIndex;
172 float mDBAttenuation;
173 };
174
175 // device categories used for volume curve management.
176 enum device_category {
177 DEVICE_CATEGORY_HEADSET,
178 DEVICE_CATEGORY_SPEAKER,
179 DEVICE_CATEGORY_EARPIECE,
180 DEVICE_CATEGORY_CNT
181 };
182
183 class IOProfile;
184
185 class HwModule {
186 public:
187 HwModule(const char *name);
188 ~HwModule();
189
190 void dump(int fd);
191
192 const char *const mName; // base name of the audio HW module (primary, a2dp ...)
193 audio_module_handle_t mHandle;
194 Vector <IOProfile *> mOutputProfiles; // output profiles exposed by this module
195 Vector <IOProfile *> mInputProfiles; // input profiles exposed by this module
196 };
197
198 // the IOProfile class describes the capabilities of an output or input stream.
199 // It is currently assumed that all combination of listed parameters are supported.
200 // It is used by the policy manager to determine if an output or input is suitable for
201 // a given use case, open/close it accordingly and connect/disconnect audio tracks
202 // to/from it.
203 class IOProfile
204 {
205 public:
206 IOProfile(HwModule *module);
207 ~IOProfile();
208
209 bool isCompatibleProfile(audio_devices_t device,
210 uint32_t samplingRate,
211 audio_format_t format,
212 audio_channel_mask_t channelMask,
213 audio_output_flags_t flags) const;
214
215 void dump(int fd);
216
217 // by convention, "0' in the first entry in mSamplingRates, mChannelMasks or mFormats
218 // indicates the supported parameters should be read from the output stream
219 // after it is opened for the first time
220 Vector <uint32_t> mSamplingRates; // supported sampling rates
221 Vector <audio_channel_mask_t> mChannelMasks; // supported channel masks
222 Vector <audio_format_t> mFormats; // supported audio formats
223 audio_devices_t mSupportedDevices; // supported devices (devices this output can be
224 // routed to)
225 audio_output_flags_t mFlags; // attribute flags (e.g primary output,
226 // direct output...). For outputs only.
227 HwModule *mModule; // audio HW module exposing this I/O stream
228 };
229
230 // default volume curve
231 static const VolumeCurvePoint sDefaultVolumeCurve[AudioPolicyManagerBase::VOLCNT];
232 // default volume curve for media strategy
233 static const VolumeCurvePoint sDefaultMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT];
234 // volume curve for media strategy on speakers
235 static const VolumeCurvePoint sSpeakerMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT];
236 // volume curve for sonification strategy on speakers
237 static const VolumeCurvePoint sSpeakerSonificationVolumeCurve[AudioPolicyManagerBase::VOLCNT];
238 static const VolumeCurvePoint sSpeakerSonificationVolumeCurveDrc[AudioPolicyManagerBase::VOLCNT];
239 static const VolumeCurvePoint sDefaultSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT];
240 static const VolumeCurvePoint sDefaultSystemVolumeCurveDrc[AudioPolicyManagerBase::VOLCNT];
241 static const VolumeCurvePoint sHeadsetSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT];
242 static const VolumeCurvePoint sDefaultVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT];
243 static const VolumeCurvePoint sSpeakerVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT];
244 // default volume curves per stream and device category. See initializeVolumeCurves()
245 static const VolumeCurvePoint *sVolumeProfiles[AUDIO_STREAM_CNT][DEVICE_CATEGORY_CNT];
246
247 // descriptor for audio outputs. Used to maintain current configuration of each opened audio output
248 // and keep track of the usage of this output by each audio stream type.
249 class AudioOutputDescriptor
250 {
251 public:
252 AudioOutputDescriptor(const IOProfile *profile);
253
254 status_t dump(int fd);
255
256 audio_devices_t device() const;
257 void changeRefCount(AudioSystem::stream_type stream, int delta);
258
259 bool isDuplicated() const { return (mOutput1 != NULL && mOutput2 != NULL); }
260 audio_devices_t supportedDevices();
261 uint32_t latency();
262 bool sharesHwModuleWith(const AudioOutputDescriptor *outputDesc);
263 bool isActive(uint32_t inPastMs = 0) const;
264 bool isStreamActive(AudioSystem::stream_type stream,
265 uint32_t inPastMs = 0,
266 nsecs_t sysTime = 0) const;
267 bool isStrategyActive(routing_strategy strategy,
268 uint32_t inPastMs = 0,
269 nsecs_t sysTime = 0) const;
270
271 audio_io_handle_t mId; // output handle
272 uint32_t mSamplingRate; //
273 audio_format_t mFormat; //
274 audio_channel_mask_t mChannelMask; // output configuration
275 uint32_t mLatency; //
276 audio_output_flags_t mFlags; //
277 audio_devices_t mDevice; // current device this output is routed to
278 uint32_t mRefCount[AudioSystem::NUM_STREAM_TYPES]; // number of streams of each type using this output
279 nsecs_t mStopTime[AudioSystem::NUM_STREAM_TYPES];
280 AudioOutputDescriptor *mOutput1; // used by duplicated outputs: first output
281 AudioOutputDescriptor *mOutput2; // used by duplicated outputs: second output
282 float mCurVolume[AudioSystem::NUM_STREAM_TYPES]; // current stream volume
283 int mMuteCount[AudioSystem::NUM_STREAM_TYPES]; // mute request counter
284 const IOProfile *mProfile; // I/O profile this output derives from
285 bool mStrategyMutedByDevice[NUM_STRATEGIES]; // strategies muted because of incompatible
286 // device selection. See checkDeviceMuteStrategies()
287 uint32_t mDirectOpenCount; // number of clients using this output (direct outputs only)
288 };
289
290 // descriptor for audio inputs. Used to maintain current configuration of each opened audio input
291 // and keep track of the usage of this input.
292 class AudioInputDescriptor
293 {
294 public:
295 AudioInputDescriptor(const IOProfile *profile);
296
297 status_t dump(int fd);
298
299 uint32_t mSamplingRate; //
300 audio_format_t mFormat; // input configuration
301 audio_channel_mask_t mChannelMask; //
302 audio_devices_t mDevice; // current device this input is routed to
303 uint32_t mRefCount; // number of AudioRecord clients using this output
304 int mInputSource; // input source selected by application (mediarecorder.h)
305 const IOProfile *mProfile; // I/O profile this output derives from
306 };
307
308 // stream descriptor used for volume control
309 class StreamDescriptor
310 {
311 public:
312 StreamDescriptor();
313
314 int getVolumeIndex(audio_devices_t device);
315 void dump(int fd);
316
317 int mIndexMin; // min volume index
318 int mIndexMax; // max volume index
319 KeyedVector<audio_devices_t, int> mIndexCur; // current volume index per device
320 bool mCanBeMuted; // true is the stream can be muted
321
322 const VolumeCurvePoint *mVolumeCurve[DEVICE_CATEGORY_CNT];
323 };
324
325 // stream descriptor used for volume control
326 class EffectDescriptor
327 {
328 public:
329
330 status_t dump(int fd);
331
332 int mIo; // io the effect is attached to
333 routing_strategy mStrategy; // routing strategy the effect is associated to
334 int mSession; // audio session the effect is on
335 effect_descriptor_t mDesc; // effect descriptor
336 bool mEnabled; // enabled state: CPU load being used or not
337 };
338
339 void addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc);
340
341 // return the strategy corresponding to a given stream type
342 static routing_strategy getStrategy(AudioSystem::stream_type stream);
343
344 // return appropriate device for streams handled by the specified strategy according to current
345 // phone state, connected devices...
346 // if fromCache is true, the device is returned from mDeviceForStrategy[],
347 // otherwise it is determine by current state
348 // (device connected,phone state, force use, a2dp output...)
349 // This allows to:
350 // 1 speed up process when the state is stable (when starting or stopping an output)
351 // 2 access to either current device selection (fromCache == true) or
352 // "future" device selection (fromCache == false) when called from a context
353 // where conditions are changing (setDeviceConnectionState(), setPhoneState()...) AND
354 // before updateDevicesAndOutputs() is called.
355 virtual audio_devices_t getDeviceForStrategy(routing_strategy strategy,
356 bool fromCache);
357
358 // change the route of the specified output. Returns the number of ms we have slept to
359 // allow new routing to take effect in certain cases.
360 uint32_t setOutputDevice(audio_io_handle_t output,
361 audio_devices_t device,
362 bool force = false,
363 int delayMs = 0);
364
365 // select input device corresponding to requested audio source
366 virtual audio_devices_t getDeviceForInputSource(int inputSource);
367
368 // return io handle of active input or 0 if no input is active
369 // Only considers inputs from physical devices (e.g. main mic, headset mic) when
370 // ignoreVirtualInputs is true.
371 audio_io_handle_t getActiveInput(bool ignoreVirtualInputs = true);
372
373 // initialize volume curves for each strategy and device category
374 void initializeVolumeCurves();
375
376 // compute the actual volume for a given stream according to the requested index and a particular
377 // device
378 virtual float computeVolume(int stream, int index, audio_io_handle_t output, audio_devices_t device);
379
380 // check that volume change is permitted, compute and send new volume to audio hardware
381 status_t checkAndSetVolume(int stream, int index, audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false);
382
383 // apply all stream volumes to the specified output and device
384 void applyStreamVolumes(audio_io_handle_t output, audio_devices_t device, int delayMs = 0, bool force = false);
385
386 // Mute or unmute all streams handled by the specified strategy on the specified output
387 void setStrategyMute(routing_strategy strategy,
388 bool on,
389 audio_io_handle_t output,
390 int delayMs = 0,
391 audio_devices_t device = (audio_devices_t)0);
392
393 // Mute or unmute the stream on the specified output
394 void setStreamMute(int stream,
395 bool on,
396 audio_io_handle_t output,
397 int delayMs = 0,
398 audio_devices_t device = (audio_devices_t)0);
399
400 // handle special cases for sonification strategy while in call: mute streams or replace by
401 // a special tone in the device used for communication
402 void handleIncallSonification(int stream, bool starting, bool stateChange);
403
404 // true if device is in a telephony or VoIP call
405 virtual bool isInCall();
406
407 // true if given state represents a device in a telephony or VoIP call
408 virtual bool isStateInCall(int state);
409
410 // when a device is connected, checks if an open output can be routed
411 // to this device. If none is open, tries to open one of the available outputs.
412 // Returns an output suitable to this device or 0.
413 // when a device is disconnected, checks if an output is not used any more and
414 // returns its handle if any.
415 // transfers the audio tracks and effects from one output thread to another accordingly.
416 status_t checkOutputsForDevice(audio_devices_t device,
417 AudioSystem::device_connection_state state,
418 SortedVector<audio_io_handle_t>& outputs,
419 const String8 paramStr);
420
421 // close an output and its companion duplicating output.
422 void closeOutput(audio_io_handle_t output);
423
424 // checks and if necessary changes outputs used for all strategies.
425 // must be called every time a condition that affects the output choice for a given strategy
426 // changes: connected device, phone state, force use...
427 // Must be called before updateDevicesAndOutputs()
428 void checkOutputForStrategy(routing_strategy strategy);
429
430 // Same as checkOutputForStrategy() but for a all strategies in order of priority
431 void checkOutputForAllStrategies();
432
433 // manages A2DP output suspend/restore according to phone state and BT SCO usage
434 void checkA2dpSuspend();
435
436 // returns the A2DP output handle if it is open or 0 otherwise
437 audio_io_handle_t getA2dpOutput();
438
439 // selects the most appropriate device on output for current state
440 // must be called every time a condition that affects the device choice for a given output is
441 // changed: connected device, phone state, force use, output start, output stop..
442 // see getDeviceForStrategy() for the use of fromCache parameter
443
444 audio_devices_t getNewDevice(audio_io_handle_t output, bool fromCache);
445 // updates cache of device used by all strategies (mDeviceForStrategy[])
446 // must be called every time a condition that affects the device choice for a given strategy is
447 // changed: connected device, phone state, force use...
448 // cached values are used by getDeviceForStrategy() if parameter fromCache is true.
449 // Must be called after checkOutputForAllStrategies()
450
451 void updateDevicesAndOutputs();
452
453 virtual uint32_t getMaxEffectsCpuLoad();
454 virtual uint32_t getMaxEffectsMemory();
455#ifdef AUDIO_POLICY_TEST
456 virtual bool threadLoop();
457 void exit();
458 int testOutputIndex(audio_io_handle_t output);
459#endif //AUDIO_POLICY_TEST
460
461 status_t setEffectEnabled(EffectDescriptor *pDesc, bool enabled);
462
463 // returns the category the device belongs to with regard to volume curve management
464 static device_category getDeviceCategory(audio_devices_t device);
465
466 // extract one device relevant for volume control from multiple device selection
467 static audio_devices_t getDeviceForVolume(audio_devices_t device);
468
469 SortedVector<audio_io_handle_t> getOutputsForDevice(audio_devices_t device,
470 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> openOutputs);
471 bool vectorsEqual(SortedVector<audio_io_handle_t>& outputs1,
472 SortedVector<audio_io_handle_t>& outputs2);
473
474 // mute/unmute strategies using an incompatible device combination
475 // if muting, wait for the audio in pcm buffer to be drained before proceeding
476 // if unmuting, unmute only after the specified delay
477 // Returns the number of ms waited
478 uint32_t checkDeviceMuteStrategies(AudioOutputDescriptor *outputDesc,
479 audio_devices_t prevDevice,
480 uint32_t delayMs);
481
482 audio_io_handle_t selectOutput(const SortedVector<audio_io_handle_t>& outputs,
483 AudioSystem::output_flags flags);
484 IOProfile *getInputProfile(audio_devices_t device,
485 uint32_t samplingRate,
486 audio_format_t format,
487 audio_channel_mask_t channelMask);
488 IOProfile *getProfileForDirectOutput(audio_devices_t device,
489 uint32_t samplingRate,
490 audio_format_t format,
491 audio_channel_mask_t channelMask,
492 audio_output_flags_t flags);
493
494 audio_io_handle_t selectOutputForEffects(const SortedVector<audio_io_handle_t>& outputs);
495
496 bool isNonOffloadableEffectEnabled();
497
498 //
499 // Audio policy configuration file parsing (audio_policy.conf)
500 //
501 static uint32_t stringToEnum(const struct StringToEnum *table,
502 size_t size,
503 const char *name);
504 static bool stringToBool(const char *value);
505 static audio_output_flags_t parseFlagNames(char *name);
506 static audio_devices_t parseDeviceNames(char *name);
507 void loadSamplingRates(char *name, IOProfile *profile);
508 void loadFormats(char *name, IOProfile *profile);
509 void loadOutChannels(char *name, IOProfile *profile);
510 void loadInChannels(char *name, IOProfile *profile);
511 status_t loadOutput(cnode *root, HwModule *module);
512 status_t loadInput(cnode *root, HwModule *module);
513 void loadHwModule(cnode *root);
514 void loadHwModules(cnode *root);
515 void loadGlobalConfig(cnode *root);
516 status_t loadAudioPolicyConfig(const char *path);
517 void defaultAudioPolicyConfig(void);
518
519
520 AudioPolicyClientInterface *mpClientInterface; // audio policy client interface
521 audio_io_handle_t mPrimaryOutput; // primary output handle
522 // list of descriptors for outputs currently opened
523 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mOutputs;
524 // copy of mOutputs before setDeviceConnectionState() opens new outputs
525 // reset to mOutputs when updateDevicesAndOutputs() is called.
526 DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mPreviousOutputs;
527 DefaultKeyedVector<audio_io_handle_t, AudioInputDescriptor *> mInputs; // list of input descriptors
528 audio_devices_t mAvailableOutputDevices; // bit field of all available output devices
529 audio_devices_t mAvailableInputDevices; // bit field of all available input devices
530 // without AUDIO_DEVICE_BIT_IN to allow direct bit
531 // field comparisons
532 int mPhoneState; // current phone state
533 AudioSystem::forced_config mForceUse[AudioSystem::NUM_FORCE_USE]; // current forced use configuration
534
535 StreamDescriptor mStreams[AudioSystem::NUM_STREAM_TYPES]; // stream descriptors for volume control
536 String8 mA2dpDeviceAddress; // A2DP device MAC address
537 String8 mScoDeviceAddress; // SCO device MAC address
538 String8 mUsbCardAndDevice; // USB audio ALSA card and device numbers:
539 // card=<card_number>;device=<><device_number>
540 bool mLimitRingtoneVolume; // limit ringtone volume to music volume if headset connected
541 audio_devices_t mDeviceForStrategy[NUM_STRATEGIES];
542 float mLastVoiceVolume; // last voice volume value sent to audio HAL
543
544 // Maximum CPU load allocated to audio effects in 0.1 MIPS (ARMv5TE, 0 WS memory) units
545 static const uint32_t MAX_EFFECTS_CPU_LOAD = 1000;
546 // Maximum memory allocated to audio effects in KB
547 static const uint32_t MAX_EFFECTS_MEMORY = 512;
548 uint32_t mTotalEffectsCpuLoad; // current CPU load used by effects
549 uint32_t mTotalEffectsMemory; // current memory used by effects
550 KeyedVector<int, EffectDescriptor *> mEffects; // list of registered audio effects
551 bool mA2dpSuspended; // true if A2DP output is suspended
552 bool mHasA2dp; // true on platforms with support for bluetooth A2DP
553 bool mHasUsb; // true on platforms with support for USB audio
554 bool mHasRemoteSubmix; // true on platforms with support for remote presentation of a submix
555 audio_devices_t mAttachedOutputDevices; // output devices always available on the platform
556 audio_devices_t mDefaultOutputDevice; // output device selected by default at boot time
557 // (must be in mAttachedOutputDevices)
558 bool mSpeakerDrcEnabled;// true on devices that use DRC on the DEVICE_CATEGORY_SPEAKER path
559 // to boost soft sounds, used to adjust volume curves accordingly
560
561 Vector <HwModule *> mHwModules;
562
563#ifdef AUDIO_POLICY_TEST
564 Mutex mLock;
565 Condition mWaitWorkCV;
566
567 int mCurOutput;
568 bool mDirectOutput;
569 audio_io_handle_t mTestOutputs[NUM_TEST_OUTPUTS];
570 int mTestInput;
571 uint32_t mTestDevice;
572 uint32_t mTestSamplingRate;
573 uint32_t mTestFormat;
574 uint32_t mTestChannels;
575 uint32_t mTestLatencyMs;
576#endif //AUDIO_POLICY_TEST
577
578private:
579 static float volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc,
580 int indexInUi);
581 // updates device caching and output for streams that can influence the
582 // routing of notifications
583 void handleNotificationRoutingForStream(AudioSystem::stream_type stream);
584 static bool isVirtualInputDevice(audio_devices_t device);
585};
586
587};