AudioPolicyManagerBase.cpp revision 60758e27a4be8fc9ac1180f8a4055234e1702cc9 
1/*
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#define LOG_TAG "AudioPolicyManagerBase"
18//#define LOG_NDEBUG 0
19
20//#define VERY_VERBOSE_LOGGING
21#ifdef VERY_VERBOSE_LOGGING
22#define ALOGVV ALOGV
23#else
24#define ALOGVV(a...) do { } while(0)
25#endif
26
27// A device mask for all audio input devices that are considered "virtual" when evaluating
28// active inputs in getActiveInput()
29#define APM_AUDIO_IN_DEVICE_VIRTUAL_ALL  AUDIO_DEVICE_IN_REMOTE_SUBMIX
30
31#include <utils/Log.h>
32#include <hardware_legacy/AudioPolicyManagerBase.h>
33#include <hardware/audio_effect.h>
34#include <hardware/audio.h>
35#include <math.h>
36#include <hardware_legacy/audio_policy_conf.h>
37
38namespace android_audio_legacy {
39
40// ----------------------------------------------------------------------------
41// AudioPolicyInterface implementation
42// ----------------------------------------------------------------------------
43
44
45status_t AudioPolicyManagerBase::setDeviceConnectionState(audio_devices_t device,
46                                                  AudioSystem::device_connection_state state,
47                                                  const char *device_address)
48{
49    SortedVector <audio_io_handle_t> outputs;
50
51    ALOGV("setDeviceConnectionState() device: %x, state %d, address %s", device, state, device_address);
52
53    // connect/disconnect only 1 device at a time
54    if (!audio_is_output_device(device) && !audio_is_input_device(device)) return BAD_VALUE;
55
56    if (strlen(device_address) >= MAX_DEVICE_ADDRESS_LEN) {
57        ALOGE("setDeviceConnectionState() invalid address: %s", device_address);
58        return BAD_VALUE;
59    }
60
61    // handle output devices
62    if (audio_is_output_device(device)) {
63
64        if (!mHasA2dp && audio_is_a2dp_device(device)) {
65            ALOGE("setDeviceConnectionState() invalid A2DP device: %x", device);
66            return BAD_VALUE;
67        }
68        if (!mHasUsb && audio_is_usb_device(device)) {
69            ALOGE("setDeviceConnectionState() invalid USB audio device: %x", device);
70            return BAD_VALUE;
71        }
72        if (!mHasRemoteSubmix && audio_is_remote_submix_device((audio_devices_t)device)) {
73            ALOGE("setDeviceConnectionState() invalid remote submix audio device: %x", device);
74            return BAD_VALUE;
75        }
76
77        // save a copy of the opened output descriptors before any output is opened or closed
78        // by checkOutputsForDevice(). This will be needed by checkOutputForAllStrategies()
79        mPreviousOutputs = mOutputs;
80        switch (state)
81        {
82        // handle output device connection
83        case AudioSystem::DEVICE_STATE_AVAILABLE:
84            if (mAvailableOutputDevices & device) {
85                ALOGW("setDeviceConnectionState() device already connected: %x", device);
86                return INVALID_OPERATION;
87            }
88            ALOGV("setDeviceConnectionState() connecting device %x", device);
89
90            if (checkOutputsForDevice(device, state, outputs) != NO_ERROR) {
91                return INVALID_OPERATION;
92            }
93            ALOGV("setDeviceConnectionState() checkOutputsForDevice() returned %d outputs",
94                  outputs.size());
95            // register new device as available
96            mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices | device);
97
98            if (!outputs.isEmpty()) {
99                String8 paramStr;
100                if (mHasA2dp && audio_is_a2dp_device(device)) {
101                    // handle A2DP device connection
102                    AudioParameter param;
103                    param.add(String8(AUDIO_PARAMETER_A2DP_SINK_ADDRESS), String8(device_address));
104                    paramStr = param.toString();
105                    mA2dpDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
106                    mA2dpSuspended = false;
107                } else if (audio_is_bluetooth_sco_device(device)) {
108                    // handle SCO device connection
109                    mScoDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
110                } else if (mHasUsb && audio_is_usb_device(device)) {
111                    // handle USB device connection
112                    mUsbCardAndDevice = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
113                    paramStr = mUsbCardAndDevice;
114                }
115                // not currently handling multiple simultaneous submixes: ignoring remote submix
116                //   case and address
117                if (!paramStr.isEmpty()) {
118                    for (size_t i = 0; i < outputs.size(); i++) {
119                        mpClientInterface->setParameters(outputs[i], paramStr);
120                    }
121                }
122            }
123            break;
124        // handle output device disconnection
125        case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
126            if (!(mAvailableOutputDevices & device)) {
127                ALOGW("setDeviceConnectionState() device not connected: %x", device);
128                return INVALID_OPERATION;
129            }
130
131            ALOGV("setDeviceConnectionState() disconnecting device %x", device);
132            // remove device from available output devices
133            mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices & ~device);
134
135            checkOutputsForDevice(device, state, outputs);
136            if (mHasA2dp && audio_is_a2dp_device(device)) {
137                // handle A2DP device disconnection
138                mA2dpDeviceAddress = "";
139                mA2dpSuspended = false;
140            } else if (audio_is_bluetooth_sco_device(device)) {
141                // handle SCO device disconnection
142                mScoDeviceAddress = "";
143            } else if (mHasUsb && audio_is_usb_device(device)) {
144                // handle USB device disconnection
145                mUsbCardAndDevice = "";
146            }
147            // not currently handling multiple simultaneous submixes: ignoring remote submix
148            //   case and address
149            } break;
150
151        default:
152            ALOGE("setDeviceConnectionState() invalid state: %x", state);
153            return BAD_VALUE;
154        }
155
156        checkA2dpSuspend();
157        checkOutputForAllStrategies();
158        // outputs must be closed after checkOutputForAllStrategies() is executed
159        if (!outputs.isEmpty()) {
160            for (size_t i = 0; i < outputs.size(); i++) {
161                // close unused outputs after device disconnection or direct outputs that have been
162                // opened by checkOutputsForDevice() to query dynamic parameters
163                if ((state == AudioSystem::DEVICE_STATE_UNAVAILABLE) ||
164                        (mOutputs.valueFor(outputs[i])->mFlags & AUDIO_OUTPUT_FLAG_DIRECT)) {
165                    closeOutput(outputs[i]);
166                }
167            }
168        }
169
170        updateDevicesAndOutputs();
171        for (size_t i = 0; i < mOutputs.size(); i++) {
172            // do not force device change on duplicated output because if device is 0, it will
173            // also force a device 0 for the two outputs it is duplicated to which may override
174            // a valid device selection on those outputs.
175            setOutputDevice(mOutputs.keyAt(i),
176                            getNewDevice(mOutputs.keyAt(i), true /*fromCache*/),
177                            !mOutputs.valueAt(i)->isDuplicated(),
178                            0);
179        }
180
181        if (device == AUDIO_DEVICE_OUT_WIRED_HEADSET) {
182            device = AUDIO_DEVICE_IN_WIRED_HEADSET;
183        } else if (device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO ||
184                   device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET ||
185                   device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT) {
186            device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
187        } else {
188            return NO_ERROR;
189        }
190    }
191    // handle input devices
192    if (audio_is_input_device(device)) {
193
194        switch (state)
195        {
196        // handle input device connection
197        case AudioSystem::DEVICE_STATE_AVAILABLE: {
198            if (mAvailableInputDevices & device) {
199                ALOGW("setDeviceConnectionState() device already connected: %d", device);
200                return INVALID_OPERATION;
201            }
202            mAvailableInputDevices = mAvailableInputDevices | (device & ~AUDIO_DEVICE_BIT_IN);
203            }
204            break;
205
206        // handle input device disconnection
207        case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
208            if (!(mAvailableInputDevices & device)) {
209                ALOGW("setDeviceConnectionState() device not connected: %d", device);
210                return INVALID_OPERATION;
211            }
212            mAvailableInputDevices = (audio_devices_t) (mAvailableInputDevices & ~device);
213            } break;
214
215        default:
216            ALOGE("setDeviceConnectionState() invalid state: %x", state);
217            return BAD_VALUE;
218        }
219
220        audio_io_handle_t activeInput = getActiveInput();
221        if (activeInput != 0) {
222            AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
223            audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
224            if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
225                ALOGV("setDeviceConnectionState() changing device from %x to %x for input %d",
226                        inputDesc->mDevice, newDevice, activeInput);
227                inputDesc->mDevice = newDevice;
228                AudioParameter param = AudioParameter();
229                param.addInt(String8(AudioParameter::keyRouting), (int)newDevice);
230                mpClientInterface->setParameters(activeInput, param.toString());
231            }
232        }
233
234        return NO_ERROR;
235    }
236
237    ALOGW("setDeviceConnectionState() invalid device: %x", device);
238    return BAD_VALUE;
239}
240
241AudioSystem::device_connection_state AudioPolicyManagerBase::getDeviceConnectionState(audio_devices_t device,
242                                                  const char *device_address)
243{
244    AudioSystem::device_connection_state state = AudioSystem::DEVICE_STATE_UNAVAILABLE;
245    String8 address = String8(device_address);
246    if (audio_is_output_device(device)) {
247        if (device & mAvailableOutputDevices) {
248            if (audio_is_a2dp_device(device) &&
249                (!mHasA2dp || (address != "" && mA2dpDeviceAddress != address))) {
250                return state;
251            }
252            if (audio_is_bluetooth_sco_device(device) &&
253                address != "" && mScoDeviceAddress != address) {
254                return state;
255            }
256            if (audio_is_usb_device(device) &&
257                (!mHasUsb || (address != "" && mUsbCardAndDevice != address))) {
258                ALOGE("getDeviceConnectionState() invalid device: %x", device);
259                return state;
260            }
261            if (audio_is_remote_submix_device((audio_devices_t)device) && !mHasRemoteSubmix) {
262                return state;
263            }
264            state = AudioSystem::DEVICE_STATE_AVAILABLE;
265        }
266    } else if (audio_is_input_device(device)) {
267        if (device & mAvailableInputDevices) {
268            state = AudioSystem::DEVICE_STATE_AVAILABLE;
269        }
270    }
271
272    return state;
273}
274
275void AudioPolicyManagerBase::setPhoneState(int state)
276{
277    ALOGV("setPhoneState() state %d", state);
278    audio_devices_t newDevice = AUDIO_DEVICE_NONE;
279    if (state < 0 || state >= AudioSystem::NUM_MODES) {
280        ALOGW("setPhoneState() invalid state %d", state);
281        return;
282    }
283
284    if (state == mPhoneState ) {
285        ALOGW("setPhoneState() setting same state %d", state);
286        return;
287    }
288
289    // if leaving call state, handle special case of active streams
290    // pertaining to sonification strategy see handleIncallSonification()
291    if (isInCall()) {
292        ALOGV("setPhoneState() in call state management: new state is %d", state);
293        for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
294            handleIncallSonification(stream, false, true);
295        }
296    }
297
298    // store previous phone state for management of sonification strategy below
299    int oldState = mPhoneState;
300    mPhoneState = state;
301    bool force = false;
302
303    // are we entering or starting a call
304    if (!isStateInCall(oldState) && isStateInCall(state)) {
305        ALOGV("  Entering call in setPhoneState()");
306        // force routing command to audio hardware when starting a call
307        // even if no device change is needed
308        force = true;
309    } else if (isStateInCall(oldState) && !isStateInCall(state)) {
310        ALOGV("  Exiting call in setPhoneState()");
311        // force routing command to audio hardware when exiting a call
312        // even if no device change is needed
313        force = true;
314    } else if (isStateInCall(state) && (state != oldState)) {
315        ALOGV("  Switching between telephony and VoIP in setPhoneState()");
316        // force routing command to audio hardware when switching between telephony and VoIP
317        // even if no device change is needed
318        force = true;
319    }
320
321    // check for device and output changes triggered by new phone state
322    newDevice = getNewDevice(mPrimaryOutput, false /*fromCache*/);
323    checkA2dpSuspend();
324    checkOutputForAllStrategies();
325    updateDevicesAndOutputs();
326
327    AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mPrimaryOutput);
328
329    // force routing command to audio hardware when ending call
330    // even if no device change is needed
331    if (isStateInCall(oldState) && newDevice == AUDIO_DEVICE_NONE) {
332        newDevice = hwOutputDesc->device();
333    }
334
335    // when changing from ring tone to in call mode, mute the ringing tone
336    // immediately and delay the route change to avoid sending the ring tone
337    // tail into the earpiece or headset.
338    int delayMs = 0;
339    if (isStateInCall(state) && oldState == AudioSystem::MODE_RINGTONE) {
340        // delay the device change command by twice the output latency to have some margin
341        // and be sure that audio buffers not yet affected by the mute are out when
342        // we actually apply the route change
343        delayMs = hwOutputDesc->mLatency*2;
344        setStreamMute(AudioSystem::RING, true, mPrimaryOutput);
345    }
346
347    if (isStateInCall(state)) {
348        for (size_t i = 0; i < mOutputs.size(); i++) {
349            AudioOutputDescriptor *desc = mOutputs.valueAt(i);
350            //take the biggest latency for all outputs
351            if (delayMs < (int)desc->mLatency*2) {
352                delayMs = desc->mLatency*2;
353            }
354            //mute STRATEGY_MEDIA on all outputs
355            if (desc->strategyRefCount(STRATEGY_MEDIA) != 0) {
356                setStrategyMute(STRATEGY_MEDIA, true, mOutputs.keyAt(i));
357                setStrategyMute(STRATEGY_MEDIA, false, mOutputs.keyAt(i), MUTE_TIME_MS,
358                    getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/));
359            }
360        }
361    }
362
363    // change routing is necessary
364    setOutputDevice(mPrimaryOutput, newDevice, force, delayMs);
365
366    // if entering in call state, handle special case of active streams
367    // pertaining to sonification strategy see handleIncallSonification()
368    if (isStateInCall(state)) {
369        ALOGV("setPhoneState() in call state management: new state is %d", state);
370        // unmute the ringing tone after a sufficient delay if it was muted before
371        // setting output device above
372        if (oldState == AudioSystem::MODE_RINGTONE) {
373            setStreamMute(AudioSystem::RING, false, mPrimaryOutput, MUTE_TIME_MS);
374        }
375        for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
376            handleIncallSonification(stream, true, true);
377        }
378    }
379
380    // Flag that ringtone volume must be limited to music volume until we exit MODE_RINGTONE
381    if (state == AudioSystem::MODE_RINGTONE &&
382        isStreamActive(AudioSystem::MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY)) {
383        mLimitRingtoneVolume = true;
384    } else {
385        mLimitRingtoneVolume = false;
386    }
387}
388
389void AudioPolicyManagerBase::setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config)
390{
391    ALOGV("setForceUse() usage %d, config %d, mPhoneState %d", usage, config, mPhoneState);
392
393    bool forceVolumeReeval = false;
394    switch(usage) {
395    case AudioSystem::FOR_COMMUNICATION:
396        if (config != AudioSystem::FORCE_SPEAKER && config != AudioSystem::FORCE_BT_SCO &&
397            config != AudioSystem::FORCE_NONE) {
398            ALOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config);
399            return;
400        }
401        forceVolumeReeval = true;
402        mForceUse[usage] = config;
403        break;
404    case AudioSystem::FOR_MEDIA:
405        if (config != AudioSystem::FORCE_HEADPHONES && config != AudioSystem::FORCE_BT_A2DP &&
406            config != AudioSystem::FORCE_WIRED_ACCESSORY &&
407            config != AudioSystem::FORCE_ANALOG_DOCK &&
408            config != AudioSystem::FORCE_DIGITAL_DOCK && config != AudioSystem::FORCE_NONE &&
409            config != AudioSystem::FORCE_NO_BT_A2DP) {
410            ALOGW("setForceUse() invalid config %d for FOR_MEDIA", config);
411            return;
412        }
413        mForceUse[usage] = config;
414        break;
415    case AudioSystem::FOR_RECORD:
416        if (config != AudioSystem::FORCE_BT_SCO && config != AudioSystem::FORCE_WIRED_ACCESSORY &&
417            config != AudioSystem::FORCE_NONE) {
418            ALOGW("setForceUse() invalid config %d for FOR_RECORD", config);
419            return;
420        }
421        mForceUse[usage] = config;
422        break;
423    case AudioSystem::FOR_DOCK:
424        if (config != AudioSystem::FORCE_NONE && config != AudioSystem::FORCE_BT_CAR_DOCK &&
425            config != AudioSystem::FORCE_BT_DESK_DOCK &&
426            config != AudioSystem::FORCE_WIRED_ACCESSORY &&
427            config != AudioSystem::FORCE_ANALOG_DOCK &&
428            config != AudioSystem::FORCE_DIGITAL_DOCK) {
429            ALOGW("setForceUse() invalid config %d for FOR_DOCK", config);
430        }
431        forceVolumeReeval = true;
432        mForceUse[usage] = config;
433        break;
434    case AudioSystem::FOR_SYSTEM:
435        if (config != AudioSystem::FORCE_NONE &&
436            config != AudioSystem::FORCE_SYSTEM_ENFORCED) {
437            ALOGW("setForceUse() invalid config %d for FOR_SYSTEM", config);
438        }
439        forceVolumeReeval = true;
440        mForceUse[usage] = config;
441        break;
442    default:
443        ALOGW("setForceUse() invalid usage %d", usage);
444        break;
445    }
446
447    // check for device and output changes triggered by new force usage
448    checkA2dpSuspend();
449    checkOutputForAllStrategies();
450    updateDevicesAndOutputs();
451    for (size_t i = 0; i < mOutputs.size(); i++) {
452        audio_io_handle_t output = mOutputs.keyAt(i);
453        audio_devices_t newDevice = getNewDevice(output, true /*fromCache*/);
454        setOutputDevice(output, newDevice, (newDevice != AUDIO_DEVICE_NONE));
455        if (forceVolumeReeval && (newDevice != AUDIO_DEVICE_NONE)) {
456            applyStreamVolumes(output, newDevice, 0, true);
457        }
458    }
459
460    audio_io_handle_t activeInput = getActiveInput();
461    if (activeInput != 0) {
462        AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
463        audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
464        if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
465            ALOGV("setForceUse() changing device from %x to %x for input %d",
466                    inputDesc->mDevice, newDevice, activeInput);
467            inputDesc->mDevice = newDevice;
468            AudioParameter param = AudioParameter();
469            param.addInt(String8(AudioParameter::keyRouting), (int)newDevice);
470            mpClientInterface->setParameters(activeInput, param.toString());
471        }
472    }
473
474}
475
476AudioSystem::forced_config AudioPolicyManagerBase::getForceUse(AudioSystem::force_use usage)
477{
478    return mForceUse[usage];
479}
480
481void AudioPolicyManagerBase::setSystemProperty(const char* property, const char* value)
482{
483    ALOGV("setSystemProperty() property %s, value %s", property, value);
484}
485
486AudioPolicyManagerBase::IOProfile *AudioPolicyManagerBase::getProfileForDirectOutput(
487                                                               audio_devices_t device,
488                                                               uint32_t samplingRate,
489                                                               uint32_t format,
490                                                               uint32_t channelMask,
491                                                               audio_output_flags_t flags)
492{
493    for (size_t i = 0; i < mHwModules.size(); i++) {
494        if (mHwModules[i]->mHandle == 0) {
495            continue;
496        }
497        for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) {
498           IOProfile *profile = mHwModules[i]->mOutputProfiles[j];
499           if (profile->isCompatibleProfile(device, samplingRate, format,
500                                           channelMask,
501                                           AUDIO_OUTPUT_FLAG_DIRECT)) {
502               if (mAvailableOutputDevices & profile->mSupportedDevices) {
503                   return mHwModules[i]->mOutputProfiles[j];
504               }
505           }
506        }
507    }
508    return 0;
509}
510
511audio_io_handle_t AudioPolicyManagerBase::getOutput(AudioSystem::stream_type stream,
512                                    uint32_t samplingRate,
513                                    uint32_t format,
514                                    uint32_t channelMask,
515                                    AudioSystem::output_flags flags)
516{
517    audio_io_handle_t output = 0;
518    uint32_t latency = 0;
519    routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream);
520    audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/);
521    ALOGV("getOutput() stream %d, samplingRate %d, format %d, channelMask %x, flags %x",
522          stream, samplingRate, format, channelMask, flags);
523
524#ifdef AUDIO_POLICY_TEST
525    if (mCurOutput != 0) {
526        ALOGV("getOutput() test output mCurOutput %d, samplingRate %d, format %d, channelMask %x, mDirectOutput %d",
527                mCurOutput, mTestSamplingRate, mTestFormat, mTestChannels, mDirectOutput);
528
529        if (mTestOutputs[mCurOutput] == 0) {
530            ALOGV("getOutput() opening test output");
531            AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL);
532            outputDesc->mDevice = mTestDevice;
533            outputDesc->mSamplingRate = mTestSamplingRate;
534            outputDesc->mFormat = mTestFormat;
535            outputDesc->mChannelMask = mTestChannels;
536            outputDesc->mLatency = mTestLatencyMs;
537            outputDesc->mFlags = (audio_output_flags_t)(mDirectOutput ? AudioSystem::OUTPUT_FLAG_DIRECT : 0);
538            outputDesc->mRefCount[stream] = 0;
539            mTestOutputs[mCurOutput] = mpClientInterface->openOutput(0, &outputDesc->mDevice,
540                                            &outputDesc->mSamplingRate,
541                                            &outputDesc->mFormat,
542                                            &outputDesc->mChannelMask,
543                                            &outputDesc->mLatency,
544                                            outputDesc->mFlags);
545            if (mTestOutputs[mCurOutput]) {
546                AudioParameter outputCmd = AudioParameter();
547                outputCmd.addInt(String8("set_id"),mCurOutput);
548                mpClientInterface->setParameters(mTestOutputs[mCurOutput],outputCmd.toString());
549                addOutput(mTestOutputs[mCurOutput], outputDesc);
550            }
551        }
552        return mTestOutputs[mCurOutput];
553    }
554#endif //AUDIO_POLICY_TEST
555
556    // open a direct output if required by specified parameters
557    IOProfile *profile = getProfileForDirectOutput(device,
558                                                   samplingRate,
559                                                   format,
560                                                   channelMask,
561                                                   (audio_output_flags_t)flags);
562    if (profile != NULL) {
563
564        ALOGV("getOutput() opening direct output device %x", device);
565
566        AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(profile);
567        outputDesc->mDevice = device;
568        outputDesc->mSamplingRate = samplingRate;
569        outputDesc->mFormat = (audio_format_t)format;
570        outputDesc->mChannelMask = (audio_channel_mask_t)channelMask;
571        outputDesc->mLatency = 0;
572        outputDesc->mFlags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_DIRECT);;
573        outputDesc->mRefCount[stream] = 0;
574        outputDesc->mStopTime[stream] = 0;
575        output = mpClientInterface->openOutput(profile->mModule->mHandle,
576                                        &outputDesc->mDevice,
577                                        &outputDesc->mSamplingRate,
578                                        &outputDesc->mFormat,
579                                        &outputDesc->mChannelMask,
580                                        &outputDesc->mLatency,
581                                        outputDesc->mFlags);
582
583        // only accept an output with the requested parameters
584        if (output == 0 ||
585            (samplingRate != 0 && samplingRate != outputDesc->mSamplingRate) ||
586            (format != 0 && format != outputDesc->mFormat) ||
587            (channelMask != 0 && channelMask != outputDesc->mChannelMask)) {
588            ALOGV("getOutput() failed opening direct output: output %d samplingRate %d %d,"
589                    "format %d %d, channelMask %04x %04x", output, samplingRate,
590                    outputDesc->mSamplingRate, format, outputDesc->mFormat, channelMask,
591                    outputDesc->mChannelMask);
592            if (output != 0) {
593                mpClientInterface->closeOutput(output);
594            }
595            delete outputDesc;
596            return 0;
597        }
598        addOutput(output, outputDesc);
599        ALOGV("getOutput() returns direct output %d", output);
600        return output;
601    }
602
603    // ignoring channel mask due to downmix capability in mixer
604
605    // open a non direct output
606
607    // get which output is suitable for the specified stream. The actual routing change will happen
608    // when startOutput() will be called
609    SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(device, mOutputs);
610
611    output = selectOutput(outputs, flags);
612
613    ALOGW_IF((output ==0), "getOutput() could not find output for stream %d, samplingRate %d,"
614            "format %d, channels %x, flags %x", stream, samplingRate, format, channelMask, flags);
615
616    ALOGV("getOutput() returns output %d", output);
617
618    return output;
619}
620
621audio_io_handle_t AudioPolicyManagerBase::selectOutput(const SortedVector<audio_io_handle_t>& outputs,
622                                                       AudioSystem::output_flags flags)
623{
624    // select one output among several that provide a path to a particular device or set of
625    // devices (the list was previously build by getOutputsForDevice()).
626    // The priority is as follows:
627    // 1: the output with the highest number of requested policy flags
628    // 2: the primary output
629    // 3: the first output in the list
630
631    if (outputs.size() == 0) {
632        return 0;
633    }
634    if (outputs.size() == 1) {
635        return outputs[0];
636    }
637
638    int maxCommonFlags = 0;
639    audio_io_handle_t outputFlags = 0;
640    audio_io_handle_t outputPrimary = 0;
641
642    for (size_t i = 0; i < outputs.size(); i++) {
643        AudioOutputDescriptor *outputDesc = mOutputs.valueFor(outputs[i]);
644        if (!outputDesc->isDuplicated()) {
645            int commonFlags = (int)AudioSystem::popCount(outputDesc->mProfile->mFlags & flags);
646            if (commonFlags > maxCommonFlags) {
647                outputFlags = outputs[i];
648                maxCommonFlags = commonFlags;
649                ALOGV("selectOutput() commonFlags for output %d, %04x", outputs[i], commonFlags);
650            }
651            if (outputDesc->mProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) {
652                outputPrimary = outputs[i];
653            }
654        }
655    }
656
657    if (outputFlags != 0) {
658        return outputFlags;
659    }
660    if (outputPrimary != 0) {
661        return outputPrimary;
662    }
663
664    return outputs[0];
665}
666
667status_t AudioPolicyManagerBase::startOutput(audio_io_handle_t output,
668                                             AudioSystem::stream_type stream,
669                                             int session)
670{
671    ALOGV("startOutput() output %d, stream %d, session %d", output, stream, session);
672    ssize_t index = mOutputs.indexOfKey(output);
673    if (index < 0) {
674        ALOGW("startOutput() unknow output %d", output);
675        return BAD_VALUE;
676    }
677
678    AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
679
680    // increment usage count for this stream on the requested output:
681    // NOTE that the usage count is the same for duplicated output and hardware output which is
682    // necessary for a correct control of hardware output routing by startOutput() and stopOutput()
683    outputDesc->changeRefCount(stream, 1);
684
685    if (outputDesc->mRefCount[stream] == 1) {
686        audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/);
687        routing_strategy strategy = getStrategy(stream);
688        bool shouldWait = (strategy == STRATEGY_SONIFICATION) ||
689                            (strategy == STRATEGY_SONIFICATION_RESPECTFUL);
690        uint32_t waitMs = 0;
691        bool force = false;
692        for (size_t i = 0; i < mOutputs.size(); i++) {
693            AudioOutputDescriptor *desc = mOutputs.valueAt(i);
694            if (desc != outputDesc) {
695                // force a device change if any other output is managed by the same hw
696                // module and has a current device selection that differs from selected device.
697                // In this case, the audio HAL must receive the new device selection so that it can
698                // change the device currently selected by the other active output.
699                if (outputDesc->sharesHwModuleWith(desc) &&
700                    desc->device() != newDevice) {
701                    force = true;
702                }
703                // wait for audio on other active outputs to be presented when starting
704                // a notification so that audio focus effect can propagate.
705                uint32_t latency = desc->latency();
706                if (shouldWait && desc->isActive(latency * 2) && (waitMs < latency)) {
707                    waitMs = latency;
708                }
709            }
710        }
711        uint32_t muteWaitMs = setOutputDevice(output, newDevice, force);
712
713        // handle special case for sonification while in call
714        if (isInCall()) {
715            handleIncallSonification(stream, true, false);
716        }
717
718        // apply volume rules for current stream and device if necessary
719        checkAndSetVolume(stream,
720                          mStreams[stream].getVolumeIndex(newDevice),
721                          output,
722                          newDevice);
723
724        // update the outputs if starting an output with a stream that can affect notification
725        // routing
726        handleNotificationRoutingForStream(stream);
727        if (waitMs > muteWaitMs) {
728            usleep((waitMs - muteWaitMs) * 2 * 1000);
729        }
730    }
731    return NO_ERROR;
732}
733
734
735status_t AudioPolicyManagerBase::stopOutput(audio_io_handle_t output,
736                                            AudioSystem::stream_type stream,
737                                            int session)
738{
739    ALOGV("stopOutput() output %d, stream %d, session %d", output, stream, session);
740    ssize_t index = mOutputs.indexOfKey(output);
741    if (index < 0) {
742        ALOGW("stopOutput() unknow output %d", output);
743        return BAD_VALUE;
744    }
745
746    AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
747
748    // handle special case for sonification while in call
749    if (isInCall()) {
750        handleIncallSonification(stream, false, false);
751    }
752
753    if (outputDesc->mRefCount[stream] > 0) {
754        // decrement usage count of this stream on the output
755        outputDesc->changeRefCount(stream, -1);
756        // store time at which the stream was stopped - see isStreamActive()
757        if (outputDesc->mRefCount[stream] == 0) {
758            outputDesc->mStopTime[stream] = systemTime();
759            audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/);
760            // delay the device switch by twice the latency because stopOutput() is executed when
761            // the track stop() command is received and at that time the audio track buffer can
762            // still contain data that needs to be drained. The latency only covers the audio HAL
763            // and kernel buffers. Also the latency does not always include additional delay in the
764            // audio path (audio DSP, CODEC ...)
765            setOutputDevice(output, newDevice, false, outputDesc->mLatency*2);
766
767            // force restoring the device selection on other active outputs if it differs from the
768            // one being selected for this output
769            for (size_t i = 0; i < mOutputs.size(); i++) {
770                audio_io_handle_t curOutput = mOutputs.keyAt(i);
771                AudioOutputDescriptor *desc = mOutputs.valueAt(i);
772                if (curOutput != output &&
773                        desc->refCount() != 0 &&
774                        outputDesc->sharesHwModuleWith(desc) &&
775                        newDevice != desc->device()) {
776                    setOutputDevice(curOutput,
777                                    getNewDevice(curOutput, false /*fromCache*/),
778                                    true,
779                                    outputDesc->mLatency*2);
780                }
781            }
782            // update the outputs if stopping one with a stream that can affect notification routing
783            handleNotificationRoutingForStream(stream);
784        }
785        return NO_ERROR;
786    } else {
787        ALOGW("stopOutput() refcount is already 0 for output %d", output);
788        return INVALID_OPERATION;
789    }
790}
791
792void AudioPolicyManagerBase::releaseOutput(audio_io_handle_t output)
793{
794    ALOGV("releaseOutput() %d", output);
795    ssize_t index = mOutputs.indexOfKey(output);
796    if (index < 0) {
797        ALOGW("releaseOutput() releasing unknown output %d", output);
798        return;
799    }
800
801#ifdef AUDIO_POLICY_TEST
802    int testIndex = testOutputIndex(output);
803    if (testIndex != 0) {
804        AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
805        if (outputDesc->refCount() == 0) {
806            mpClientInterface->closeOutput(output);
807            delete mOutputs.valueAt(index);
808            mOutputs.removeItem(output);
809            mTestOutputs[testIndex] = 0;
810        }
811        return;
812    }
813#endif //AUDIO_POLICY_TEST
814
815    if (mOutputs.valueAt(index)->mFlags & AudioSystem::OUTPUT_FLAG_DIRECT) {
816        mpClientInterface->closeOutput(output);
817        delete mOutputs.valueAt(index);
818        mOutputs.removeItem(output);
819        mPreviousOutputs = mOutputs;
820    }
821
822}
823
824audio_io_handle_t AudioPolicyManagerBase::getInput(int inputSource,
825                                    uint32_t samplingRate,
826                                    uint32_t format,
827                                    uint32_t channelMask,
828                                    AudioSystem::audio_in_acoustics acoustics)
829{
830    audio_io_handle_t input = 0;
831    audio_devices_t device = getDeviceForInputSource(inputSource);
832
833    ALOGV("getInput() inputSource %d, samplingRate %d, format %d, channelMask %x, acoustics %x",
834          inputSource, samplingRate, format, channelMask, acoustics);
835
836    if (device == AUDIO_DEVICE_NONE) {
837        ALOGW("getInput() could not find device for inputSource %d", inputSource);
838        return 0;
839    }
840
841    // adapt channel selection to input source
842    switch(inputSource) {
843    case AUDIO_SOURCE_VOICE_UPLINK:
844        channelMask = AudioSystem::CHANNEL_IN_VOICE_UPLINK;
845        break;
846    case AUDIO_SOURCE_VOICE_DOWNLINK:
847        channelMask = AudioSystem::CHANNEL_IN_VOICE_DNLINK;
848        break;
849    case AUDIO_SOURCE_VOICE_CALL:
850        channelMask = (AudioSystem::CHANNEL_IN_VOICE_UPLINK | AudioSystem::CHANNEL_IN_VOICE_DNLINK);
851        break;
852    default:
853        break;
854    }
855
856    IOProfile *profile = getInputProfile(device,
857                                         samplingRate,
858                                         format,
859                                         channelMask);
860    if (profile == NULL) {
861        ALOGW("getInput() could not find profile for device %04x, samplingRate %d, format %d,"
862                "channelMask %04x",
863                device, samplingRate, format, channelMask);
864        return 0;
865    }
866
867    if (profile->mModule->mHandle == 0) {
868        ALOGE("getInput(): HW module %s not opened", profile->mModule->mName);
869        return 0;
870    }
871
872    AudioInputDescriptor *inputDesc = new AudioInputDescriptor(profile);
873
874    inputDesc->mInputSource = inputSource;
875    inputDesc->mDevice = device;
876    inputDesc->mSamplingRate = samplingRate;
877    inputDesc->mFormat = (audio_format_t)format;
878    inputDesc->mChannelMask = (audio_channel_mask_t)channelMask;
879    inputDesc->mRefCount = 0;
880    input = mpClientInterface->openInput(profile->mModule->mHandle,
881                                    &inputDesc->mDevice,
882                                    &inputDesc->mSamplingRate,
883                                    &inputDesc->mFormat,
884                                    &inputDesc->mChannelMask);
885
886    // only accept input with the exact requested set of parameters
887    if (input == 0 ||
888        (samplingRate != inputDesc->mSamplingRate) ||
889        (format != inputDesc->mFormat) ||
890        (channelMask != inputDesc->mChannelMask)) {
891        ALOGV("getInput() failed opening input: samplingRate %d, format %d, channelMask %d",
892                samplingRate, format, channelMask);
893        if (input != 0) {
894            mpClientInterface->closeInput(input);
895        }
896        delete inputDesc;
897        return 0;
898    }
899    mInputs.add(input, inputDesc);
900    return input;
901}
902
903status_t AudioPolicyManagerBase::startInput(audio_io_handle_t input)
904{
905    ALOGV("startInput() input %d", input);
906    ssize_t index = mInputs.indexOfKey(input);
907    if (index < 0) {
908        ALOGW("startInput() unknow input %d", input);
909        return BAD_VALUE;
910    }
911    AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
912
913#ifdef AUDIO_POLICY_TEST
914    if (mTestInput == 0)
915#endif //AUDIO_POLICY_TEST
916    {
917        // refuse 2 active AudioRecord clients at the same time
918        if (getActiveInput() != 0) {
919            ALOGW("startInput() input %d failed: other input already started", input);
920            return INVALID_OPERATION;
921        }
922    }
923
924    AudioParameter param = AudioParameter();
925    param.addInt(String8(AudioParameter::keyRouting), (int)inputDesc->mDevice);
926
927    param.addInt(String8(AudioParameter::keyInputSource), (int)inputDesc->mInputSource);
928    ALOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource);
929
930    mpClientInterface->setParameters(input, param.toString());
931
932    inputDesc->mRefCount = 1;
933    return NO_ERROR;
934}
935
936status_t AudioPolicyManagerBase::stopInput(audio_io_handle_t input)
937{
938    ALOGV("stopInput() input %d", input);
939    ssize_t index = mInputs.indexOfKey(input);
940    if (index < 0) {
941        ALOGW("stopInput() unknow input %d", input);
942        return BAD_VALUE;
943    }
944    AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
945
946    if (inputDesc->mRefCount == 0) {
947        ALOGW("stopInput() input %d already stopped", input);
948        return INVALID_OPERATION;
949    } else {
950        AudioParameter param = AudioParameter();
951        param.addInt(String8(AudioParameter::keyRouting), 0);
952        mpClientInterface->setParameters(input, param.toString());
953        inputDesc->mRefCount = 0;
954        return NO_ERROR;
955    }
956}
957
958void AudioPolicyManagerBase::releaseInput(audio_io_handle_t input)
959{
960    ALOGV("releaseInput() %d", input);
961    ssize_t index = mInputs.indexOfKey(input);
962    if (index < 0) {
963        ALOGW("releaseInput() releasing unknown input %d", input);
964        return;
965    }
966    mpClientInterface->closeInput(input);
967    delete mInputs.valueAt(index);
968    mInputs.removeItem(input);
969    ALOGV("releaseInput() exit");
970}
971
972void AudioPolicyManagerBase::initStreamVolume(AudioSystem::stream_type stream,
973                                            int indexMin,
974                                            int indexMax)
975{
976    ALOGV("initStreamVolume() stream %d, min %d, max %d", stream , indexMin, indexMax);
977    if (indexMin < 0 || indexMin >= indexMax) {
978        ALOGW("initStreamVolume() invalid index limits for stream %d, min %d, max %d", stream , indexMin, indexMax);
979        return;
980    }
981    mStreams[stream].mIndexMin = indexMin;
982    mStreams[stream].mIndexMax = indexMax;
983}
984
985status_t AudioPolicyManagerBase::setStreamVolumeIndex(AudioSystem::stream_type stream,
986                                                      int index,
987                                                      audio_devices_t device)
988{
989
990    if ((index < mStreams[stream].mIndexMin) || (index > mStreams[stream].mIndexMax)) {
991        return BAD_VALUE;
992    }
993    if (!audio_is_output_device(device)) {
994        return BAD_VALUE;
995    }
996
997    // Force max volume if stream cannot be muted
998    if (!mStreams[stream].mCanBeMuted) index = mStreams[stream].mIndexMax;
999
1000    ALOGV("setStreamVolumeIndex() stream %d, device %04x, index %d",
1001          stream, device, index);
1002
1003    // if device is AUDIO_DEVICE_OUT_DEFAULT set default value and
1004    // clear all device specific values
1005    if (device == AUDIO_DEVICE_OUT_DEFAULT) {
1006        mStreams[stream].mIndexCur.clear();
1007    }
1008    mStreams[stream].mIndexCur.add(device, index);
1009
1010    // compute and apply stream volume on all outputs according to connected device
1011    status_t status = NO_ERROR;
1012    for (size_t i = 0; i < mOutputs.size(); i++) {
1013        audio_devices_t curDevice =
1014                getDeviceForVolume(mOutputs.valueAt(i)->device());
1015        if (device == curDevice) {
1016            status_t volStatus = checkAndSetVolume(stream, index, mOutputs.keyAt(i), curDevice);
1017            if (volStatus != NO_ERROR) {
1018                status = volStatus;
1019            }
1020        }
1021    }
1022    return status;
1023}
1024
1025status_t AudioPolicyManagerBase::getStreamVolumeIndex(AudioSystem::stream_type stream,
1026                                                      int *index,
1027                                                      audio_devices_t device)
1028{
1029    if (index == NULL) {
1030        return BAD_VALUE;
1031    }
1032    if (!audio_is_output_device(device)) {
1033        return BAD_VALUE;
1034    }
1035    // if device is AUDIO_DEVICE_OUT_DEFAULT, return volume for device corresponding to
1036    // the strategy the stream belongs to.
1037    if (device == AUDIO_DEVICE_OUT_DEFAULT) {
1038        device = getDeviceForStrategy(getStrategy(stream), true /*fromCache*/);
1039    }
1040    device = getDeviceForVolume(device);
1041
1042    *index =  mStreams[stream].getVolumeIndex(device);
1043    ALOGV("getStreamVolumeIndex() stream %d device %08x index %d", stream, device, *index);
1044    return NO_ERROR;
1045}
1046
1047audio_io_handle_t AudioPolicyManagerBase::getOutputForEffect(const effect_descriptor_t *desc)
1048{
1049    ALOGV("getOutputForEffect()");
1050    // apply simple rule where global effects are attached to the same output as MUSIC streams
1051
1052    routing_strategy strategy = getStrategy(AudioSystem::MUSIC);
1053    audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/);
1054    SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(device, mOutputs);
1055    int outIdx = 0;
1056    for (size_t i = 0; i < dstOutputs.size(); i++) {
1057        AudioOutputDescriptor *desc = mOutputs.valueFor(dstOutputs[i]);
1058        if (desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) {
1059            outIdx = i;
1060        }
1061    }
1062    return dstOutputs[outIdx];
1063}
1064
1065status_t AudioPolicyManagerBase::registerEffect(const effect_descriptor_t *desc,
1066                                audio_io_handle_t io,
1067                                uint32_t strategy,
1068                                int session,
1069                                int id)
1070{
1071    ssize_t index = mOutputs.indexOfKey(io);
1072    if (index < 0) {
1073        index = mInputs.indexOfKey(io);
1074        if (index < 0) {
1075            ALOGW("registerEffect() unknown io %d", io);
1076            return INVALID_OPERATION;
1077        }
1078    }
1079
1080    if (mTotalEffectsMemory + desc->memoryUsage > getMaxEffectsMemory()) {
1081        ALOGW("registerEffect() memory limit exceeded for Fx %s, Memory %d KB",
1082                desc->name, desc->memoryUsage);
1083        return INVALID_OPERATION;
1084    }
1085    mTotalEffectsMemory += desc->memoryUsage;
1086    ALOGV("registerEffect() effect %s, io %d, strategy %d session %d id %d",
1087            desc->name, io, strategy, session, id);
1088    ALOGV("registerEffect() memory %d, total memory %d", desc->memoryUsage, mTotalEffectsMemory);
1089
1090    EffectDescriptor *pDesc = new EffectDescriptor();
1091    memcpy (&pDesc->mDesc, desc, sizeof(effect_descriptor_t));
1092    pDesc->mIo = io;
1093    pDesc->mStrategy = (routing_strategy)strategy;
1094    pDesc->mSession = session;
1095    pDesc->mEnabled = false;
1096
1097    mEffects.add(id, pDesc);
1098
1099    return NO_ERROR;
1100}
1101
1102status_t AudioPolicyManagerBase::unregisterEffect(int id)
1103{
1104    ssize_t index = mEffects.indexOfKey(id);
1105    if (index < 0) {
1106        ALOGW("unregisterEffect() unknown effect ID %d", id);
1107        return INVALID_OPERATION;
1108    }
1109
1110    EffectDescriptor *pDesc = mEffects.valueAt(index);
1111
1112    setEffectEnabled(pDesc, false);
1113
1114    if (mTotalEffectsMemory < pDesc->mDesc.memoryUsage) {
1115        ALOGW("unregisterEffect() memory %d too big for total %d",
1116                pDesc->mDesc.memoryUsage, mTotalEffectsMemory);
1117        pDesc->mDesc.memoryUsage = mTotalEffectsMemory;
1118    }
1119    mTotalEffectsMemory -= pDesc->mDesc.memoryUsage;
1120    ALOGV("unregisterEffect() effect %s, ID %d, memory %d total memory %d",
1121            pDesc->mDesc.name, id, pDesc->mDesc.memoryUsage, mTotalEffectsMemory);
1122
1123    mEffects.removeItem(id);
1124    delete pDesc;
1125
1126    return NO_ERROR;
1127}
1128
1129status_t AudioPolicyManagerBase::setEffectEnabled(int id, bool enabled)
1130{
1131    ssize_t index = mEffects.indexOfKey(id);
1132    if (index < 0) {
1133        ALOGW("unregisterEffect() unknown effect ID %d", id);
1134        return INVALID_OPERATION;
1135    }
1136
1137    return setEffectEnabled(mEffects.valueAt(index), enabled);
1138}
1139
1140status_t AudioPolicyManagerBase::setEffectEnabled(EffectDescriptor *pDesc, bool enabled)
1141{
1142    if (enabled == pDesc->mEnabled) {
1143        ALOGV("setEffectEnabled(%s) effect already %s",
1144             enabled?"true":"false", enabled?"enabled":"disabled");
1145        return INVALID_OPERATION;
1146    }
1147
1148    if (enabled) {
1149        if (mTotalEffectsCpuLoad + pDesc->mDesc.cpuLoad > getMaxEffectsCpuLoad()) {
1150            ALOGW("setEffectEnabled(true) CPU Load limit exceeded for Fx %s, CPU %f MIPS",
1151                 pDesc->mDesc.name, (float)pDesc->mDesc.cpuLoad/10);
1152            return INVALID_OPERATION;
1153        }
1154        mTotalEffectsCpuLoad += pDesc->mDesc.cpuLoad;
1155        ALOGV("setEffectEnabled(true) total CPU %d", mTotalEffectsCpuLoad);
1156    } else {
1157        if (mTotalEffectsCpuLoad < pDesc->mDesc.cpuLoad) {
1158            ALOGW("setEffectEnabled(false) CPU load %d too high for total %d",
1159                    pDesc->mDesc.cpuLoad, mTotalEffectsCpuLoad);
1160            pDesc->mDesc.cpuLoad = mTotalEffectsCpuLoad;
1161        }
1162        mTotalEffectsCpuLoad -= pDesc->mDesc.cpuLoad;
1163        ALOGV("setEffectEnabled(false) total CPU %d", mTotalEffectsCpuLoad);
1164    }
1165    pDesc->mEnabled = enabled;
1166    return NO_ERROR;
1167}
1168
1169bool AudioPolicyManagerBase::isStreamActive(int stream, uint32_t inPastMs) const
1170{
1171    nsecs_t sysTime = systemTime();
1172    for (size_t i = 0; i < mOutputs.size(); i++) {
1173        if (mOutputs.valueAt(i)->mRefCount[stream] != 0 ||
1174            ns2ms(sysTime - mOutputs.valueAt(i)->mStopTime[stream]) < inPastMs) {
1175            return true;
1176        }
1177    }
1178    return false;
1179}
1180
1181bool AudioPolicyManagerBase::isSourceActive(audio_source_t source) const
1182{
1183    for (size_t i = 0; i < mInputs.size(); i++) {
1184        const AudioInputDescriptor * inputDescriptor = mInputs.valueAt(i);
1185        if ((inputDescriptor->mInputSource == (int) source)
1186                && (inputDescriptor->mRefCount > 0)) {
1187            return true;
1188        }
1189    }
1190    return false;
1191}
1192
1193
1194
1195status_t AudioPolicyManagerBase::dump(int fd)
1196{
1197    const size_t SIZE = 256;
1198    char buffer[SIZE];
1199    String8 result;
1200
1201    snprintf(buffer, SIZE, "\nAudioPolicyManager Dump: %p\n", this);
1202    result.append(buffer);
1203
1204    snprintf(buffer, SIZE, " Primary Output: %d\n", mPrimaryOutput);
1205    result.append(buffer);
1206    snprintf(buffer, SIZE, " A2DP device address: %s\n", mA2dpDeviceAddress.string());
1207    result.append(buffer);
1208    snprintf(buffer, SIZE, " SCO device address: %s\n", mScoDeviceAddress.string());
1209    result.append(buffer);
1210    snprintf(buffer, SIZE, " USB audio ALSA %s\n", mUsbCardAndDevice.string());
1211    result.append(buffer);
1212    snprintf(buffer, SIZE, " Output devices: %08x\n", mAvailableOutputDevices);
1213    result.append(buffer);
1214    snprintf(buffer, SIZE, " Input devices: %08x\n", mAvailableInputDevices);
1215    result.append(buffer);
1216    snprintf(buffer, SIZE, " Phone state: %d\n", mPhoneState);
1217    result.append(buffer);
1218    snprintf(buffer, SIZE, " Force use for communications %d\n", mForceUse[AudioSystem::FOR_COMMUNICATION]);
1219    result.append(buffer);
1220    snprintf(buffer, SIZE, " Force use for media %d\n", mForceUse[AudioSystem::FOR_MEDIA]);
1221    result.append(buffer);
1222    snprintf(buffer, SIZE, " Force use for record %d\n", mForceUse[AudioSystem::FOR_RECORD]);
1223    result.append(buffer);
1224    snprintf(buffer, SIZE, " Force use for dock %d\n", mForceUse[AudioSystem::FOR_DOCK]);
1225    result.append(buffer);
1226    snprintf(buffer, SIZE, " Force use for system %d\n", mForceUse[AudioSystem::FOR_SYSTEM]);
1227    result.append(buffer);
1228    write(fd, result.string(), result.size());
1229
1230
1231    snprintf(buffer, SIZE, "\nHW Modules dump:\n");
1232    write(fd, buffer, strlen(buffer));
1233    for (size_t i = 0; i < mHwModules.size(); i++) {
1234        snprintf(buffer, SIZE, "- HW Module %d:\n", i + 1);
1235        write(fd, buffer, strlen(buffer));
1236        mHwModules[i]->dump(fd);
1237    }
1238
1239    snprintf(buffer, SIZE, "\nOutputs dump:\n");
1240    write(fd, buffer, strlen(buffer));
1241    for (size_t i = 0; i < mOutputs.size(); i++) {
1242        snprintf(buffer, SIZE, "- Output %d dump:\n", mOutputs.keyAt(i));
1243        write(fd, buffer, strlen(buffer));
1244        mOutputs.valueAt(i)->dump(fd);
1245    }
1246
1247    snprintf(buffer, SIZE, "\nInputs dump:\n");
1248    write(fd, buffer, strlen(buffer));
1249    for (size_t i = 0; i < mInputs.size(); i++) {
1250        snprintf(buffer, SIZE, "- Input %d dump:\n", mInputs.keyAt(i));
1251        write(fd, buffer, strlen(buffer));
1252        mInputs.valueAt(i)->dump(fd);
1253    }
1254
1255    snprintf(buffer, SIZE, "\nStreams dump:\n");
1256    write(fd, buffer, strlen(buffer));
1257    snprintf(buffer, SIZE,
1258             " Stream  Can be muted  Index Min  Index Max  Index Cur [device : index]...\n");
1259    write(fd, buffer, strlen(buffer));
1260    for (size_t i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
1261        snprintf(buffer, SIZE, " %02d      ", i);
1262        write(fd, buffer, strlen(buffer));
1263        mStreams[i].dump(fd);
1264    }
1265
1266    snprintf(buffer, SIZE, "\nTotal Effects CPU: %f MIPS, Total Effects memory: %d KB\n",
1267            (float)mTotalEffectsCpuLoad/10, mTotalEffectsMemory);
1268    write(fd, buffer, strlen(buffer));
1269
1270    snprintf(buffer, SIZE, "Registered effects:\n");
1271    write(fd, buffer, strlen(buffer));
1272    for (size_t i = 0; i < mEffects.size(); i++) {
1273        snprintf(buffer, SIZE, "- Effect %d dump:\n", mEffects.keyAt(i));
1274        write(fd, buffer, strlen(buffer));
1275        mEffects.valueAt(i)->dump(fd);
1276    }
1277
1278
1279    return NO_ERROR;
1280}
1281
1282// ----------------------------------------------------------------------------
1283// AudioPolicyManagerBase
1284// ----------------------------------------------------------------------------
1285
1286AudioPolicyManagerBase::AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface)
1287    :
1288#ifdef AUDIO_POLICY_TEST
1289    Thread(false),
1290#endif //AUDIO_POLICY_TEST
1291    mPrimaryOutput((audio_io_handle_t)0),
1292    mAvailableOutputDevices(AUDIO_DEVICE_NONE),
1293    mPhoneState(AudioSystem::MODE_NORMAL),
1294    mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f),
1295    mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0),
1296    mA2dpSuspended(false), mHasA2dp(false), mHasUsb(false), mHasRemoteSubmix(false)
1297{
1298    mpClientInterface = clientInterface;
1299
1300    for (int i = 0; i < AudioSystem::NUM_FORCE_USE; i++) {
1301        mForceUse[i] = AudioSystem::FORCE_NONE;
1302    }
1303
1304    initializeVolumeCurves();
1305
1306    mA2dpDeviceAddress = String8("");
1307    mScoDeviceAddress = String8("");
1308    mUsbCardAndDevice = String8("");
1309
1310    if (loadAudioPolicyConfig(AUDIO_POLICY_VENDOR_CONFIG_FILE) != NO_ERROR) {
1311        if (loadAudioPolicyConfig(AUDIO_POLICY_CONFIG_FILE) != NO_ERROR) {
1312            ALOGE("could not load audio policy configuration file, setting defaults");
1313            defaultAudioPolicyConfig();
1314        }
1315    }
1316
1317    // open all output streams needed to access attached devices
1318    for (size_t i = 0; i < mHwModules.size(); i++) {
1319        mHwModules[i]->mHandle = mpClientInterface->loadHwModule(mHwModules[i]->mName);
1320        if (mHwModules[i]->mHandle == 0) {
1321            ALOGW("could not open HW module %s", mHwModules[i]->mName);
1322            continue;
1323        }
1324        // open all output streams needed to access attached devices
1325        for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
1326        {
1327            const IOProfile *outProfile = mHwModules[i]->mOutputProfiles[j];
1328
1329            if (outProfile->mSupportedDevices & mAttachedOutputDevices) {
1330                AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(outProfile);
1331                outputDesc->mDevice = (audio_devices_t)(mDefaultOutputDevice &
1332                                                            outProfile->mSupportedDevices);
1333                audio_io_handle_t output = mpClientInterface->openOutput(
1334                                                outProfile->mModule->mHandle,
1335                                                &outputDesc->mDevice,
1336                                                &outputDesc->mSamplingRate,
1337                                                &outputDesc->mFormat,
1338                                                &outputDesc->mChannelMask,
1339                                                &outputDesc->mLatency,
1340                                                outputDesc->mFlags);
1341                if (output == 0) {
1342                    delete outputDesc;
1343                } else {
1344                    mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices |
1345                                            (outProfile->mSupportedDevices & mAttachedOutputDevices));
1346                    if (mPrimaryOutput == 0 &&
1347                            outProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) {
1348                        mPrimaryOutput = output;
1349                    }
1350                    addOutput(output, outputDesc);
1351                    setOutputDevice(output,
1352                                    (audio_devices_t)(mDefaultOutputDevice &
1353                                                        outProfile->mSupportedDevices),
1354                                    true);
1355                }
1356            }
1357        }
1358    }
1359
1360    ALOGE_IF((mAttachedOutputDevices & ~mAvailableOutputDevices),
1361             "Not output found for attached devices %08x",
1362             (mAttachedOutputDevices & ~mAvailableOutputDevices));
1363
1364    ALOGE_IF((mPrimaryOutput == 0), "Failed to open primary output");
1365
1366    updateDevicesAndOutputs();
1367
1368#ifdef AUDIO_POLICY_TEST
1369    if (mPrimaryOutput != 0) {
1370        AudioParameter outputCmd = AudioParameter();
1371        outputCmd.addInt(String8("set_id"), 0);
1372        mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString());
1373
1374        mTestDevice = AUDIO_DEVICE_OUT_SPEAKER;
1375        mTestSamplingRate = 44100;
1376        mTestFormat = AudioSystem::PCM_16_BIT;
1377        mTestChannels =  AudioSystem::CHANNEL_OUT_STEREO;
1378        mTestLatencyMs = 0;
1379        mCurOutput = 0;
1380        mDirectOutput = false;
1381        for (int i = 0; i < NUM_TEST_OUTPUTS; i++) {
1382            mTestOutputs[i] = 0;
1383        }
1384
1385        const size_t SIZE = 256;
1386        char buffer[SIZE];
1387        snprintf(buffer, SIZE, "AudioPolicyManagerTest");
1388        run(buffer, ANDROID_PRIORITY_AUDIO);
1389    }
1390#endif //AUDIO_POLICY_TEST
1391}
1392
1393AudioPolicyManagerBase::~AudioPolicyManagerBase()
1394{
1395#ifdef AUDIO_POLICY_TEST
1396    exit();
1397#endif //AUDIO_POLICY_TEST
1398   for (size_t i = 0; i < mOutputs.size(); i++) {
1399        mpClientInterface->closeOutput(mOutputs.keyAt(i));
1400        delete mOutputs.valueAt(i);
1401   }
1402   for (size_t i = 0; i < mInputs.size(); i++) {
1403        mpClientInterface->closeInput(mInputs.keyAt(i));
1404        delete mInputs.valueAt(i);
1405   }
1406   for (size_t i = 0; i < mHwModules.size(); i++) {
1407        delete mHwModules[i];
1408   }
1409}
1410
1411status_t AudioPolicyManagerBase::initCheck()
1412{
1413    return (mPrimaryOutput == 0) ? NO_INIT : NO_ERROR;
1414}
1415
1416#ifdef AUDIO_POLICY_TEST
1417bool AudioPolicyManagerBase::threadLoop()
1418{
1419    ALOGV("entering threadLoop()");
1420    while (!exitPending())
1421    {
1422        String8 command;
1423        int valueInt;
1424        String8 value;
1425
1426        Mutex::Autolock _l(mLock);
1427        mWaitWorkCV.waitRelative(mLock, milliseconds(50));
1428
1429        command = mpClientInterface->getParameters(0, String8("test_cmd_policy"));
1430        AudioParameter param = AudioParameter(command);
1431
1432        if (param.getInt(String8("test_cmd_policy"), valueInt) == NO_ERROR &&
1433            valueInt != 0) {
1434            ALOGV("Test command %s received", command.string());
1435            String8 target;
1436            if (param.get(String8("target"), target) != NO_ERROR) {
1437                target = "Manager";
1438            }
1439            if (param.getInt(String8("test_cmd_policy_output"), valueInt) == NO_ERROR) {
1440                param.remove(String8("test_cmd_policy_output"));
1441                mCurOutput = valueInt;
1442            }
1443            if (param.get(String8("test_cmd_policy_direct"), value) == NO_ERROR) {
1444                param.remove(String8("test_cmd_policy_direct"));
1445                if (value == "false") {
1446                    mDirectOutput = false;
1447                } else if (value == "true") {
1448                    mDirectOutput = true;
1449                }
1450            }
1451            if (param.getInt(String8("test_cmd_policy_input"), valueInt) == NO_ERROR) {
1452                param.remove(String8("test_cmd_policy_input"));
1453                mTestInput = valueInt;
1454            }
1455
1456            if (param.get(String8("test_cmd_policy_format"), value) == NO_ERROR) {
1457                param.remove(String8("test_cmd_policy_format"));
1458                int format = AudioSystem::INVALID_FORMAT;
1459                if (value == "PCM 16 bits") {
1460                    format = AudioSystem::PCM_16_BIT;
1461                } else if (value == "PCM 8 bits") {
1462                    format = AudioSystem::PCM_8_BIT;
1463                } else if (value == "Compressed MP3") {
1464                    format = AudioSystem::MP3;
1465                }
1466                if (format != AudioSystem::INVALID_FORMAT) {
1467                    if (target == "Manager") {
1468                        mTestFormat = format;
1469                    } else if (mTestOutputs[mCurOutput] != 0) {
1470                        AudioParameter outputParam = AudioParameter();
1471                        outputParam.addInt(String8("format"), format);
1472                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1473                    }
1474                }
1475            }
1476            if (param.get(String8("test_cmd_policy_channels"), value) == NO_ERROR) {
1477                param.remove(String8("test_cmd_policy_channels"));
1478                int channels = 0;
1479
1480                if (value == "Channels Stereo") {
1481                    channels =  AudioSystem::CHANNEL_OUT_STEREO;
1482                } else if (value == "Channels Mono") {
1483                    channels =  AudioSystem::CHANNEL_OUT_MONO;
1484                }
1485                if (channels != 0) {
1486                    if (target == "Manager") {
1487                        mTestChannels = channels;
1488                    } else if (mTestOutputs[mCurOutput] != 0) {
1489                        AudioParameter outputParam = AudioParameter();
1490                        outputParam.addInt(String8("channels"), channels);
1491                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1492                    }
1493                }
1494            }
1495            if (param.getInt(String8("test_cmd_policy_sampleRate"), valueInt) == NO_ERROR) {
1496                param.remove(String8("test_cmd_policy_sampleRate"));
1497                if (valueInt >= 0 && valueInt <= 96000) {
1498                    int samplingRate = valueInt;
1499                    if (target == "Manager") {
1500                        mTestSamplingRate = samplingRate;
1501                    } else if (mTestOutputs[mCurOutput] != 0) {
1502                        AudioParameter outputParam = AudioParameter();
1503                        outputParam.addInt(String8("sampling_rate"), samplingRate);
1504                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1505                    }
1506                }
1507            }
1508
1509            if (param.get(String8("test_cmd_policy_reopen"), value) == NO_ERROR) {
1510                param.remove(String8("test_cmd_policy_reopen"));
1511
1512                AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mPrimaryOutput);
1513                mpClientInterface->closeOutput(mPrimaryOutput);
1514
1515                audio_module_handle_t moduleHandle = outputDesc->mModule->mHandle;
1516
1517                delete mOutputs.valueFor(mPrimaryOutput);
1518                mOutputs.removeItem(mPrimaryOutput);
1519
1520                AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL);
1521                outputDesc->mDevice = AUDIO_DEVICE_OUT_SPEAKER;
1522                mPrimaryOutput = mpClientInterface->openOutput(moduleHandle,
1523                                                &outputDesc->mDevice,
1524                                                &outputDesc->mSamplingRate,
1525                                                &outputDesc->mFormat,
1526                                                &outputDesc->mChannelMask,
1527                                                &outputDesc->mLatency,
1528                                                outputDesc->mFlags);
1529                if (mPrimaryOutput == 0) {
1530                    ALOGE("Failed to reopen hardware output stream, samplingRate: %d, format %d, channels %d",
1531                            outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannelMask);
1532                } else {
1533                    AudioParameter outputCmd = AudioParameter();
1534                    outputCmd.addInt(String8("set_id"), 0);
1535                    mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString());
1536                    addOutput(mPrimaryOutput, outputDesc);
1537                }
1538            }
1539
1540
1541            mpClientInterface->setParameters(0, String8("test_cmd_policy="));
1542        }
1543    }
1544    return false;
1545}
1546
1547void AudioPolicyManagerBase::exit()
1548{
1549    {
1550        AutoMutex _l(mLock);
1551        requestExit();
1552        mWaitWorkCV.signal();
1553    }
1554    requestExitAndWait();
1555}
1556
1557int AudioPolicyManagerBase::testOutputIndex(audio_io_handle_t output)
1558{
1559    for (int i = 0; i < NUM_TEST_OUTPUTS; i++) {
1560        if (output == mTestOutputs[i]) return i;
1561    }
1562    return 0;
1563}
1564#endif //AUDIO_POLICY_TEST
1565
1566// ---
1567
1568void AudioPolicyManagerBase::addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc)
1569{
1570    outputDesc->mId = id;
1571    mOutputs.add(id, outputDesc);
1572}
1573
1574
1575status_t AudioPolicyManagerBase::checkOutputsForDevice(audio_devices_t device,
1576                                                       AudioSystem::device_connection_state state,
1577                                                       SortedVector<audio_io_handle_t>& outputs)
1578{
1579    AudioOutputDescriptor *desc;
1580
1581    if (state == AudioSystem::DEVICE_STATE_AVAILABLE) {
1582        // first list already open outputs that can be routed to this device
1583        for (size_t i = 0; i < mOutputs.size(); i++) {
1584            desc = mOutputs.valueAt(i);
1585            if (!desc->isDuplicated() && (desc->mProfile->mSupportedDevices & device)) {
1586                ALOGV("checkOutputsForDevice(): adding opened output %d", mOutputs.keyAt(i));
1587                outputs.add(mOutputs.keyAt(i));
1588            }
1589        }
1590        // then look for output profiles that can be routed to this device
1591        SortedVector<IOProfile *> profiles;
1592        for (size_t i = 0; i < mHwModules.size(); i++)
1593        {
1594            if (mHwModules[i]->mHandle == 0) {
1595                continue;
1596            }
1597            for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
1598            {
1599                if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices & device) {
1600                    ALOGV("checkOutputsForDevice(): adding profile %d from module %d", j, i);
1601                    profiles.add(mHwModules[i]->mOutputProfiles[j]);
1602                }
1603            }
1604        }
1605
1606        if (profiles.isEmpty() && outputs.isEmpty()) {
1607            ALOGW("checkOutputsForDevice(): No output available for device %04x", device);
1608            return BAD_VALUE;
1609        }
1610
1611        // open outputs for matching profiles if needed. Direct outputs are also opened to
1612        // query for dynamic parameters and will be closed later by setDeviceConnectionState()
1613        for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) {
1614            IOProfile *profile = profiles[profile_index];
1615
1616            // nothing to do if one output is already opened for this profile
1617            size_t j;
1618            for (j = 0; j < mOutputs.size(); j++) {
1619                desc = mOutputs.valueAt(j);
1620                if (!desc->isDuplicated() && desc->mProfile == profile) {
1621                    break;
1622                }
1623            }
1624            if (j != mOutputs.size()) {
1625                continue;
1626            }
1627
1628            ALOGV("opening output for device %08x", device);
1629            desc = new AudioOutputDescriptor(profile);
1630            desc->mDevice = device;
1631            audio_io_handle_t output = mpClientInterface->openOutput(profile->mModule->mHandle,
1632                                                                       &desc->mDevice,
1633                                                                       &desc->mSamplingRate,
1634                                                                       &desc->mFormat,
1635                                                                       &desc->mChannelMask,
1636                                                                       &desc->mLatency,
1637                                                                       desc->mFlags);
1638            if (output != 0) {
1639                if (desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) {
1640                    String8 reply;
1641                    char *value;
1642                    if (profile->mSamplingRates[0] == 0) {
1643                        reply = mpClientInterface->getParameters(output,
1644                                                String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES));
1645                        ALOGV("checkOutputsForDevice() direct output sup sampling rates %s",
1646                                  reply.string());
1647                        value = strpbrk((char *)reply.string(), "=");
1648                        if (value != NULL) {
1649                            loadSamplingRates(value + 1, profile);
1650                        }
1651                    }
1652                    if (profile->mFormats[0] == 0) {
1653                        reply = mpClientInterface->getParameters(output,
1654                                                       String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS));
1655                        ALOGV("checkOutputsForDevice() direct output sup formats %s",
1656                                  reply.string());
1657                        value = strpbrk((char *)reply.string(), "=");
1658                        if (value != NULL) {
1659                            loadFormats(value + 1, profile);
1660                        }
1661                    }
1662                    if (profile->mChannelMasks[0] == 0) {
1663                        reply = mpClientInterface->getParameters(output,
1664                                                      String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS));
1665                        ALOGV("checkOutputsForDevice() direct output sup channel masks %s",
1666                                  reply.string());
1667                        value = strpbrk((char *)reply.string(), "=");
1668                        if (value != NULL) {
1669                            loadOutChannels(value + 1, profile);
1670                        }
1671                    }
1672                    if (((profile->mSamplingRates[0] == 0) &&
1673                             (profile->mSamplingRates.size() < 2)) ||
1674                         ((profile->mFormats[0] == 0) &&
1675                             (profile->mFormats.size() < 2)) ||
1676                         ((profile->mFormats[0] == 0) &&
1677                             (profile->mChannelMasks.size() < 2))) {
1678                        ALOGW("checkOutputsForDevice() direct output missing param");
1679                        mpClientInterface->closeOutput(output);
1680                        output = 0;
1681                    } else {
1682                        addOutput(output, desc);
1683                    }
1684                } else {
1685                    audio_io_handle_t duplicatedOutput = 0;
1686                    // add output descriptor
1687                    addOutput(output, desc);
1688                    // set initial stream volume for device
1689                    applyStreamVolumes(output, device, 0, true);
1690
1691                    //TODO: configure audio effect output stage here
1692
1693                    // open a duplicating output thread for the new output and the primary output
1694                    duplicatedOutput = mpClientInterface->openDuplicateOutput(output,
1695                                                                              mPrimaryOutput);
1696                    if (duplicatedOutput != 0) {
1697                        // add duplicated output descriptor
1698                        AudioOutputDescriptor *dupOutputDesc = new AudioOutputDescriptor(NULL);
1699                        dupOutputDesc->mOutput1 = mOutputs.valueFor(mPrimaryOutput);
1700                        dupOutputDesc->mOutput2 = mOutputs.valueFor(output);
1701                        dupOutputDesc->mSamplingRate = desc->mSamplingRate;
1702                        dupOutputDesc->mFormat = desc->mFormat;
1703                        dupOutputDesc->mChannelMask = desc->mChannelMask;
1704                        dupOutputDesc->mLatency = desc->mLatency;
1705                        addOutput(duplicatedOutput, dupOutputDesc);
1706                        applyStreamVolumes(duplicatedOutput, device, 0, true);
1707                    } else {
1708                        ALOGW("checkOutputsForDevice() could not open dup output for %d and %d",
1709                                mPrimaryOutput, output);
1710                        mpClientInterface->closeOutput(output);
1711                        mOutputs.removeItem(output);
1712                        output = 0;
1713                    }
1714                }
1715            }
1716            if (output == 0) {
1717                ALOGW("checkOutputsForDevice() could not open output for device %x", device);
1718                delete desc;
1719                profiles.removeAt(profile_index);
1720                profile_index--;
1721            } else {
1722                outputs.add(output);
1723                ALOGV("checkOutputsForDevice(): adding output %d", output);
1724            }
1725        }
1726
1727        if (profiles.isEmpty()) {
1728            ALOGW("checkOutputsForDevice(): No output available for device %04x", device);
1729            return BAD_VALUE;
1730        }
1731    } else {
1732        // check if one opened output is not needed any more after disconnecting one device
1733        for (size_t i = 0; i < mOutputs.size(); i++) {
1734            desc = mOutputs.valueAt(i);
1735            if (!desc->isDuplicated() &&
1736                    !(desc->mProfile->mSupportedDevices & mAvailableOutputDevices)) {
1737                ALOGV("checkOutputsForDevice(): disconnecting adding output %d", mOutputs.keyAt(i));
1738                outputs.add(mOutputs.keyAt(i));
1739            }
1740        }
1741        for (size_t i = 0; i < mHwModules.size(); i++)
1742        {
1743            if (mHwModules[i]->mHandle == 0) {
1744                continue;
1745            }
1746            for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
1747            {
1748                IOProfile *profile = mHwModules[i]->mOutputProfiles[j];
1749                if ((profile->mSupportedDevices & device) &&
1750                        (profile->mFlags & AUDIO_OUTPUT_FLAG_DIRECT)) {
1751                    ALOGV("checkOutputsForDevice(): clearing direct output profile %d on module %d",
1752                          j, i);
1753                    if (profile->mSamplingRates[0] == 0) {
1754                        profile->mSamplingRates.clear();
1755                        profile->mSamplingRates.add(0);
1756                    }
1757                    if (profile->mFormats[0] == 0) {
1758                        profile->mFormats.clear();
1759                        profile->mFormats.add((audio_format_t)0);
1760                    }
1761                    if (profile->mChannelMasks[0] == 0) {
1762                        profile->mChannelMasks.clear();
1763                        profile->mChannelMasks.add((audio_channel_mask_t)0);
1764                    }
1765                }
1766            }
1767        }
1768    }
1769    return NO_ERROR;
1770}
1771
1772void AudioPolicyManagerBase::closeOutput(audio_io_handle_t output)
1773{
1774    ALOGV("closeOutput(%d)", output);
1775
1776    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
1777    if (outputDesc == NULL) {
1778        ALOGW("closeOutput() unknown output %d", output);
1779        return;
1780    }
1781
1782    // look for duplicated outputs connected to the output being removed.
1783    for (size_t i = 0; i < mOutputs.size(); i++) {
1784        AudioOutputDescriptor *dupOutputDesc = mOutputs.valueAt(i);
1785        if (dupOutputDesc->isDuplicated() &&
1786                (dupOutputDesc->mOutput1 == outputDesc ||
1787                dupOutputDesc->mOutput2 == outputDesc)) {
1788            AudioOutputDescriptor *outputDesc2;
1789            if (dupOutputDesc->mOutput1 == outputDesc) {
1790                outputDesc2 = dupOutputDesc->mOutput2;
1791            } else {
1792                outputDesc2 = dupOutputDesc->mOutput1;
1793            }
1794            // As all active tracks on duplicated output will be deleted,
1795            // and as they were also referenced on the other output, the reference
1796            // count for their stream type must be adjusted accordingly on
1797            // the other output.
1798            for (int j = 0; j < (int)AudioSystem::NUM_STREAM_TYPES; j++) {
1799                int refCount = dupOutputDesc->mRefCount[j];
1800                outputDesc2->changeRefCount((AudioSystem::stream_type)j,-refCount);
1801            }
1802            audio_io_handle_t duplicatedOutput = mOutputs.keyAt(i);
1803            ALOGV("closeOutput() closing also duplicated output %d", duplicatedOutput);
1804
1805            mpClientInterface->closeOutput(duplicatedOutput);
1806            delete mOutputs.valueFor(duplicatedOutput);
1807            mOutputs.removeItem(duplicatedOutput);
1808        }
1809    }
1810
1811    AudioParameter param;
1812    param.add(String8("closing"), String8("true"));
1813    mpClientInterface->setParameters(output, param.toString());
1814
1815    mpClientInterface->closeOutput(output);
1816    delete mOutputs.valueFor(output);
1817    mOutputs.removeItem(output);
1818}
1819
1820SortedVector<audio_io_handle_t> AudioPolicyManagerBase::getOutputsForDevice(audio_devices_t device,
1821                        DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> openOutputs)
1822{
1823    SortedVector<audio_io_handle_t> outputs;
1824
1825    ALOGVV("getOutputsForDevice() device %04x", device);
1826    for (size_t i = 0; i < openOutputs.size(); i++) {
1827        ALOGVV("output %d isDuplicated=%d device=%04x",
1828                i, openOutputs.valueAt(i)->isDuplicated(), openOutputs.valueAt(i)->supportedDevices());
1829        if ((device & openOutputs.valueAt(i)->supportedDevices()) == device) {
1830            ALOGVV("getOutputsForDevice() found output %d", openOutputs.keyAt(i));
1831            outputs.add(openOutputs.keyAt(i));
1832        }
1833    }
1834    return outputs;
1835}
1836
1837bool AudioPolicyManagerBase::vectorsEqual(SortedVector<audio_io_handle_t>& outputs1,
1838                                   SortedVector<audio_io_handle_t>& outputs2)
1839{
1840    if (outputs1.size() != outputs2.size()) {
1841        return false;
1842    }
1843    for (size_t i = 0; i < outputs1.size(); i++) {
1844        if (outputs1[i] != outputs2[i]) {
1845            return false;
1846        }
1847    }
1848    return true;
1849}
1850
1851void AudioPolicyManagerBase::checkOutputForStrategy(routing_strategy strategy)
1852{
1853    audio_devices_t oldDevice = getDeviceForStrategy(strategy, true /*fromCache*/);
1854    audio_devices_t newDevice = getDeviceForStrategy(strategy, false /*fromCache*/);
1855    SortedVector<audio_io_handle_t> srcOutputs = getOutputsForDevice(oldDevice, mPreviousOutputs);
1856    SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(newDevice, mOutputs);
1857
1858    if (!vectorsEqual(srcOutputs,dstOutputs)) {
1859        ALOGV("checkOutputForStrategy() strategy %d, moving from output %d to output %d",
1860              strategy, srcOutputs[0], dstOutputs[0]);
1861        // mute strategy while moving tracks from one output to another
1862        for (size_t i = 0; i < srcOutputs.size(); i++) {
1863            AudioOutputDescriptor *desc = mOutputs.valueFor(srcOutputs[i]);
1864            if (desc->strategyRefCount(strategy) != 0) {
1865                setStrategyMute(strategy, true, srcOutputs[i]);
1866                setStrategyMute(strategy, false, srcOutputs[i], MUTE_TIME_MS, newDevice);
1867            }
1868        }
1869
1870        // Move effects associated to this strategy from previous output to new output
1871        if (strategy == STRATEGY_MEDIA) {
1872            int outIdx = 0;
1873            for (size_t i = 0; i < dstOutputs.size(); i++) {
1874                AudioOutputDescriptor *desc = mOutputs.valueFor(dstOutputs[i]);
1875                if (desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) {
1876                    outIdx = i;
1877                }
1878            }
1879            SortedVector<audio_io_handle_t> moved;
1880            for (size_t i = 0; i < mEffects.size(); i++) {
1881                EffectDescriptor *desc = mEffects.valueAt(i);
1882                if (desc->mSession == AUDIO_SESSION_OUTPUT_MIX &&
1883                        desc->mIo != dstOutputs[outIdx]) {
1884                    if (moved.indexOf(desc->mIo) < 0) {
1885                        ALOGV("checkOutputForStrategy() moving effect %d to output %d",
1886                              mEffects.keyAt(i), dstOutputs[outIdx]);
1887                        mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, desc->mIo,
1888                                                       dstOutputs[outIdx]);
1889                        moved.add(desc->mIo);
1890                    }
1891                    desc->mIo = dstOutputs[outIdx];
1892                }
1893            }
1894        }
1895        // Move tracks associated to this strategy from previous output to new output
1896        for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
1897            if (getStrategy((AudioSystem::stream_type)i) == strategy) {
1898                //FIXME see fixme on name change
1899                mpClientInterface->setStreamOutput((AudioSystem::stream_type)i,
1900                                                   dstOutputs[0] /* ignored */);
1901            }
1902        }
1903    }
1904}
1905
1906void AudioPolicyManagerBase::checkOutputForAllStrategies()
1907{
1908    checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE);
1909    checkOutputForStrategy(STRATEGY_PHONE);
1910    checkOutputForStrategy(STRATEGY_SONIFICATION);
1911    checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL);
1912    checkOutputForStrategy(STRATEGY_MEDIA);
1913    checkOutputForStrategy(STRATEGY_DTMF);
1914}
1915
1916audio_io_handle_t AudioPolicyManagerBase::getA2dpOutput()
1917{
1918    if (!mHasA2dp) {
1919        return 0;
1920    }
1921
1922    for (size_t i = 0; i < mOutputs.size(); i++) {
1923        AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
1924        if (!outputDesc->isDuplicated() && outputDesc->device() & AUDIO_DEVICE_OUT_ALL_A2DP) {
1925            return mOutputs.keyAt(i);
1926        }
1927    }
1928
1929    return 0;
1930}
1931
1932void AudioPolicyManagerBase::checkA2dpSuspend()
1933{
1934    if (!mHasA2dp) {
1935        return;
1936    }
1937    audio_io_handle_t a2dpOutput = getA2dpOutput();
1938    if (a2dpOutput == 0) {
1939        return;
1940    }
1941
1942    // suspend A2DP output if:
1943    //      (NOT already suspended) &&
1944    //      ((SCO device is connected &&
1945    //       (forced usage for communication || for record is SCO))) ||
1946    //      (phone state is ringing || in call)
1947    //
1948    // restore A2DP output if:
1949    //      (Already suspended) &&
1950    //      ((SCO device is NOT connected ||
1951    //       (forced usage NOT for communication && NOT for record is SCO))) &&
1952    //      (phone state is NOT ringing && NOT in call)
1953    //
1954    if (mA2dpSuspended) {
1955        if (((mScoDeviceAddress == "") ||
1956             ((mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO) &&
1957              (mForceUse[AudioSystem::FOR_RECORD] != AudioSystem::FORCE_BT_SCO))) &&
1958             ((mPhoneState != AudioSystem::MODE_IN_CALL) &&
1959              (mPhoneState != AudioSystem::MODE_RINGTONE))) {
1960
1961            mpClientInterface->restoreOutput(a2dpOutput);
1962            mA2dpSuspended = false;
1963        }
1964    } else {
1965        if (((mScoDeviceAddress != "") &&
1966             ((mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) ||
1967              (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO))) ||
1968             ((mPhoneState == AudioSystem::MODE_IN_CALL) ||
1969              (mPhoneState == AudioSystem::MODE_RINGTONE))) {
1970
1971            mpClientInterface->suspendOutput(a2dpOutput);
1972            mA2dpSuspended = true;
1973        }
1974    }
1975}
1976
1977audio_devices_t AudioPolicyManagerBase::getNewDevice(audio_io_handle_t output, bool fromCache)
1978{
1979    audio_devices_t device = AUDIO_DEVICE_NONE;
1980
1981    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
1982    // check the following by order of priority to request a routing change if necessary:
1983    // 1: the strategy enforced audible is active on the output:
1984    //      use device for strategy enforced audible
1985    // 2: we are in call or the strategy phone is active on the output:
1986    //      use device for strategy phone
1987    // 3: the strategy sonification is active on the output:
1988    //      use device for strategy sonification
1989    // 4: the strategy "respectful" sonification is active on the output:
1990    //      use device for strategy "respectful" sonification
1991    // 5: the strategy media is active on the output:
1992    //      use device for strategy media
1993    // 6: the strategy DTMF is active on the output:
1994    //      use device for strategy DTMF
1995    if (outputDesc->isUsedByStrategy(STRATEGY_ENFORCED_AUDIBLE)) {
1996        device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache);
1997    } else if (isInCall() ||
1998                    outputDesc->isUsedByStrategy(STRATEGY_PHONE)) {
1999        device = getDeviceForStrategy(STRATEGY_PHONE, fromCache);
2000    } else if (outputDesc->isUsedByStrategy(STRATEGY_SONIFICATION)) {
2001        device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache);
2002    } else if (outputDesc->isUsedByStrategy(STRATEGY_SONIFICATION_RESPECTFUL)) {
2003        device = getDeviceForStrategy(STRATEGY_SONIFICATION_RESPECTFUL, fromCache);
2004    } else if (outputDesc->isUsedByStrategy(STRATEGY_MEDIA)) {
2005        device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache);
2006    } else if (outputDesc->isUsedByStrategy(STRATEGY_DTMF)) {
2007        device = getDeviceForStrategy(STRATEGY_DTMF, fromCache);
2008    }
2009
2010    ALOGV("getNewDevice() selected device %x", device);
2011    return device;
2012}
2013
2014uint32_t AudioPolicyManagerBase::getStrategyForStream(AudioSystem::stream_type stream) {
2015    return (uint32_t)getStrategy(stream);
2016}
2017
2018audio_devices_t AudioPolicyManagerBase::getDevicesForStream(AudioSystem::stream_type stream) {
2019    audio_devices_t devices;
2020    // By checking the range of stream before calling getStrategy, we avoid
2021    // getStrategy's behavior for invalid streams.  getStrategy would do a ALOGE
2022    // and then return STRATEGY_MEDIA, but we want to return the empty set.
2023    if (stream < (AudioSystem::stream_type) 0 || stream >= AudioSystem::NUM_STREAM_TYPES) {
2024        devices = AUDIO_DEVICE_NONE;
2025    } else {
2026        AudioPolicyManagerBase::routing_strategy strategy = getStrategy(stream);
2027        devices = getDeviceForStrategy(strategy, true /*fromCache*/);
2028    }
2029    return devices;
2030}
2031
2032AudioPolicyManagerBase::routing_strategy AudioPolicyManagerBase::getStrategy(
2033        AudioSystem::stream_type stream) {
2034    // stream to strategy mapping
2035    switch (stream) {
2036    case AudioSystem::VOICE_CALL:
2037    case AudioSystem::BLUETOOTH_SCO:
2038        return STRATEGY_PHONE;
2039    case AudioSystem::RING:
2040    case AudioSystem::ALARM:
2041        return STRATEGY_SONIFICATION;
2042    case AudioSystem::NOTIFICATION:
2043        return STRATEGY_SONIFICATION_RESPECTFUL;
2044    case AudioSystem::DTMF:
2045        return STRATEGY_DTMF;
2046    default:
2047        ALOGE("unknown stream type");
2048    case AudioSystem::SYSTEM:
2049        // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs
2050        // while key clicks are played produces a poor result
2051    case AudioSystem::TTS:
2052    case AudioSystem::MUSIC:
2053        return STRATEGY_MEDIA;
2054    case AudioSystem::ENFORCED_AUDIBLE:
2055        return STRATEGY_ENFORCED_AUDIBLE;
2056    }
2057}
2058
2059void AudioPolicyManagerBase::handleNotificationRoutingForStream(AudioSystem::stream_type stream) {
2060    switch(stream) {
2061    case AudioSystem::MUSIC:
2062        checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL);
2063        updateDevicesAndOutputs();
2064        break;
2065    default:
2066        break;
2067    }
2068}
2069
2070audio_devices_t AudioPolicyManagerBase::getDeviceForStrategy(routing_strategy strategy,
2071                                                             bool fromCache)
2072{
2073    uint32_t device = AUDIO_DEVICE_NONE;
2074
2075    if (fromCache) {
2076        ALOGVV("getDeviceForStrategy() from cache strategy %d, device %x",
2077              strategy, mDeviceForStrategy[strategy]);
2078        return mDeviceForStrategy[strategy];
2079    }
2080
2081    switch (strategy) {
2082
2083    case STRATEGY_SONIFICATION_RESPECTFUL:
2084        if (isInCall()) {
2085            device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
2086        } else if (isStreamActive(AudioSystem::MUSIC, SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) {
2087            // while media is playing (or has recently played), use the same device
2088            device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/);
2089        } else {
2090            // when media is not playing anymore, fall back on the sonification behavior
2091            device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
2092        }
2093
2094        break;
2095
2096    case STRATEGY_DTMF:
2097        if (!isInCall()) {
2098            // when off call, DTMF strategy follows the same rules as MEDIA strategy
2099            device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/);
2100            break;
2101        }
2102        // when in call, DTMF and PHONE strategies follow the same rules
2103        // FALL THROUGH
2104
2105    case STRATEGY_PHONE:
2106        // for phone strategy, we first consider the forced use and then the available devices by order
2107        // of priority
2108        switch (mForceUse[AudioSystem::FOR_COMMUNICATION]) {
2109        case AudioSystem::FORCE_BT_SCO:
2110            if (!isInCall() || strategy != STRATEGY_DTMF) {
2111                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
2112                if (device) break;
2113            }
2114            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
2115            if (device) break;
2116            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO;
2117            if (device) break;
2118            // if SCO device is requested but no SCO device is available, fall back to default case
2119            // FALL THROUGH
2120
2121        default:    // FORCE_NONE
2122            // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP
2123            if (mHasA2dp && !isInCall() &&
2124                    (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
2125                    (getA2dpOutput() != 0) && !mA2dpSuspended) {
2126                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
2127                if (device) break;
2128                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
2129                if (device) break;
2130            }
2131            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
2132            if (device) break;
2133            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADSET;
2134            if (device) break;
2135            if (mPhoneState != AudioSystem::MODE_IN_CALL) {
2136                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
2137                if (device) break;
2138                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
2139                if (device) break;
2140                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
2141                if (device) break;
2142                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
2143                if (device) break;
2144                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
2145                if (device) break;
2146            }
2147            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_EARPIECE;
2148            if (device) break;
2149            device = mDefaultOutputDevice;
2150            if (device == AUDIO_DEVICE_NONE) {
2151                ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE");
2152            }
2153            break;
2154
2155        case AudioSystem::FORCE_SPEAKER:
2156            // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to
2157            // A2DP speaker when forcing to speaker output
2158            if (mHasA2dp && !isInCall() &&
2159                    (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
2160                    (getA2dpOutput() != 0) && !mA2dpSuspended) {
2161                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
2162                if (device) break;
2163            }
2164            if (mPhoneState != AudioSystem::MODE_IN_CALL) {
2165                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
2166                if (device) break;
2167                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
2168                if (device) break;
2169                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
2170                if (device) break;
2171                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
2172                if (device) break;
2173                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
2174                if (device) break;
2175            }
2176            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
2177            if (device) break;
2178            device = mDefaultOutputDevice;
2179            if (device == AUDIO_DEVICE_NONE) {
2180                ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE, FORCE_SPEAKER");
2181            }
2182            break;
2183        }
2184    break;
2185
2186    case STRATEGY_SONIFICATION:
2187
2188        // If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by
2189        // handleIncallSonification().
2190        if (isInCall()) {
2191            device = getDeviceForStrategy(STRATEGY_PHONE, false /*fromCache*/);
2192            break;
2193        }
2194        // FALL THROUGH
2195
2196    case STRATEGY_ENFORCED_AUDIBLE:
2197        // strategy STRATEGY_ENFORCED_AUDIBLE uses same routing policy as STRATEGY_SONIFICATION
2198        // except:
2199        //   - when in call where it doesn't default to STRATEGY_PHONE behavior
2200        //   - in countries where not enforced in which case it follows STRATEGY_MEDIA
2201
2202        if ((strategy == STRATEGY_SONIFICATION) ||
2203                (mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_SYSTEM_ENFORCED)) {
2204            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
2205            if (device == AUDIO_DEVICE_NONE) {
2206                ALOGE("getDeviceForStrategy() speaker device not found for STRATEGY_SONIFICATION");
2207            }
2208        }
2209        // The second device used for sonification is the same as the device used by media strategy
2210        // FALL THROUGH
2211
2212    case STRATEGY_MEDIA: {
2213        uint32_t device2 = AUDIO_DEVICE_NONE;
2214        if (strategy != STRATEGY_SONIFICATION) {
2215            // no sonification on remote submix (e.g. WFD)
2216            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_REMOTE_SUBMIX;
2217        }
2218        if ((device2 == AUDIO_DEVICE_NONE) &&
2219                mHasA2dp && (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
2220                (getA2dpOutput() != 0) && !mA2dpSuspended) {
2221            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
2222            if (device2 == AUDIO_DEVICE_NONE) {
2223                device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
2224            }
2225            if (device2 == AUDIO_DEVICE_NONE) {
2226                device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
2227            }
2228        }
2229        if (device2 == AUDIO_DEVICE_NONE) {
2230            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
2231        }
2232        if (device2 == AUDIO_DEVICE_NONE) {
2233            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADSET;
2234        }
2235        if (device2 == AUDIO_DEVICE_NONE) {
2236            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
2237        }
2238        if (device2 == AUDIO_DEVICE_NONE) {
2239            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
2240        }
2241        if (device2 == AUDIO_DEVICE_NONE) {
2242            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
2243        }
2244        if ((device2 == AUDIO_DEVICE_NONE) && (strategy != STRATEGY_SONIFICATION)) {
2245            // no sonification on aux digital (e.g. HDMI)
2246            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
2247        }
2248        if ((device2 == AUDIO_DEVICE_NONE) &&
2249                (mForceUse[AudioSystem::FOR_DOCK] == AudioSystem::FORCE_ANALOG_DOCK)) {
2250            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
2251        }
2252        if (device2 == AUDIO_DEVICE_NONE) {
2253            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
2254        }
2255
2256        // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or
2257        // STRATEGY_ENFORCED_AUDIBLE, AUDIO_DEVICE_NONE otherwise
2258        device |= device2;
2259        if (device) break;
2260        device = mDefaultOutputDevice;
2261        if (device == AUDIO_DEVICE_NONE) {
2262            ALOGE("getDeviceForStrategy() no device found for STRATEGY_MEDIA");
2263        }
2264        } break;
2265
2266    default:
2267        ALOGW("getDeviceForStrategy() unknown strategy: %d", strategy);
2268        break;
2269    }
2270
2271    ALOGVV("getDeviceForStrategy() strategy %d, device %x", strategy, device);
2272    return device;
2273}
2274
2275void AudioPolicyManagerBase::updateDevicesAndOutputs()
2276{
2277    for (int i = 0; i < NUM_STRATEGIES; i++) {
2278        mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/);
2279    }
2280    mPreviousOutputs = mOutputs;
2281}
2282
2283uint32_t AudioPolicyManagerBase::checkDeviceMuteStrategies(AudioOutputDescriptor *outputDesc,
2284                                                       audio_devices_t prevDevice,
2285                                                       uint32_t delayMs)
2286{
2287    // mute/unmute strategies using an incompatible device combination
2288    // if muting, wait for the audio in pcm buffer to be drained before proceeding
2289    // if unmuting, unmute only after the specified delay
2290    if (outputDesc->isDuplicated()) {
2291        return 0;
2292    }
2293
2294    uint32_t muteWaitMs = 0;
2295    audio_devices_t device = outputDesc->device();
2296    bool shouldMute = (outputDesc->refCount() != 0) &&
2297                    (AudioSystem::popCount(device) >= 2);
2298    // temporary mute output if device selection changes to avoid volume bursts due to
2299    // different per device volumes
2300    bool tempMute = (outputDesc->refCount() != 0) && (device != prevDevice);
2301
2302    for (size_t i = 0; i < NUM_STRATEGIES; i++) {
2303        audio_devices_t curDevice = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/);
2304        bool mute = shouldMute && (curDevice & device) && (curDevice != device);
2305        bool doMute = false;
2306
2307        if (mute && !outputDesc->mStrategyMutedByDevice[i]) {
2308            doMute = true;
2309            outputDesc->mStrategyMutedByDevice[i] = true;
2310        } else if (!mute && outputDesc->mStrategyMutedByDevice[i]){
2311            doMute = true;
2312            outputDesc->mStrategyMutedByDevice[i] = false;
2313        }
2314        if (doMute || tempMute) {
2315            for (size_t j = 0; j < mOutputs.size(); j++) {
2316                AudioOutputDescriptor *desc = mOutputs.valueAt(j);
2317                if ((desc->supportedDevices() & outputDesc->supportedDevices())
2318                        == AUDIO_DEVICE_NONE) {
2319                    continue;
2320                }
2321                audio_io_handle_t curOutput = mOutputs.keyAt(j);
2322                ALOGVV("checkDeviceMuteStrategies() %s strategy %d (curDevice %04x) on output %d",
2323                      mute ? "muting" : "unmuting", i, curDevice, curOutput);
2324                setStrategyMute((routing_strategy)i, mute, curOutput, mute ? 0 : delayMs);
2325                if (desc->strategyRefCount((routing_strategy)i) != 0) {
2326                    if (tempMute) {
2327                        setStrategyMute((routing_strategy)i, true, curOutput);
2328                        setStrategyMute((routing_strategy)i, false, curOutput,
2329                                            desc->latency() * 2, device);
2330                    }
2331                    if (tempMute || mute) {
2332                        if (muteWaitMs < desc->latency()) {
2333                            muteWaitMs = desc->latency();
2334                        }
2335                    }
2336                }
2337            }
2338        }
2339    }
2340
2341    // FIXME: should not need to double latency if volume could be applied immediately by the
2342    // audioflinger mixer. We must account for the delay between now and the next time
2343    // the audioflinger thread for this output will process a buffer (which corresponds to
2344    // one buffer size, usually 1/2 or 1/4 of the latency).
2345    muteWaitMs *= 2;
2346    // wait for the PCM output buffers to empty before proceeding with the rest of the command
2347    if (muteWaitMs > delayMs) {
2348        muteWaitMs -= delayMs;
2349        usleep(muteWaitMs * 1000);
2350        return muteWaitMs;
2351    }
2352    return 0;
2353}
2354
2355uint32_t AudioPolicyManagerBase::setOutputDevice(audio_io_handle_t output,
2356                                             audio_devices_t device,
2357                                             bool force,
2358                                             int delayMs)
2359{
2360    ALOGV("setOutputDevice() output %d device %04x delayMs %d", output, device, delayMs);
2361    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2362    AudioParameter param;
2363    uint32_t muteWaitMs = 0;
2364
2365    if (outputDesc->isDuplicated()) {
2366        muteWaitMs = setOutputDevice(outputDesc->mOutput1->mId, device, force, delayMs);
2367        muteWaitMs += setOutputDevice(outputDesc->mOutput2->mId, device, force, delayMs);
2368        return muteWaitMs;
2369    }
2370    // filter devices according to output selected
2371    device = (audio_devices_t)(device & outputDesc->mProfile->mSupportedDevices);
2372
2373    audio_devices_t prevDevice = outputDesc->mDevice;
2374
2375    ALOGV("setOutputDevice() prevDevice %04x", prevDevice);
2376
2377    if (device != AUDIO_DEVICE_NONE) {
2378        outputDesc->mDevice = device;
2379    }
2380    muteWaitMs = checkDeviceMuteStrategies(outputDesc, prevDevice, delayMs);
2381
2382    // Do not change the routing if:
2383    //  - the requested device is AUDIO_DEVICE_NONE
2384    //  - the requested device is the same as current device and force is not specified.
2385    // Doing this check here allows the caller to call setOutputDevice() without conditions
2386    if ((device == AUDIO_DEVICE_NONE || device == prevDevice) && !force) {
2387        ALOGV("setOutputDevice() setting same device %04x or null device for output %d", device, output);
2388        return muteWaitMs;
2389    }
2390
2391    ALOGV("setOutputDevice() changing device");
2392    // do the routing
2393    param.addInt(String8(AudioParameter::keyRouting), (int)device);
2394    mpClientInterface->setParameters(output, param.toString(), delayMs);
2395
2396    // update stream volumes according to new device
2397    applyStreamVolumes(output, device, delayMs);
2398
2399    return muteWaitMs;
2400}
2401
2402AudioPolicyManagerBase::IOProfile *AudioPolicyManagerBase::getInputProfile(audio_devices_t device,
2403                                                   uint32_t samplingRate,
2404                                                   uint32_t format,
2405                                                   uint32_t channelMask)
2406{
2407    // Choose an input profile based on the requested capture parameters: select the first available
2408    // profile supporting all requested parameters.
2409
2410    for (size_t i = 0; i < mHwModules.size(); i++)
2411    {
2412        if (mHwModules[i]->mHandle == 0) {
2413            continue;
2414        }
2415        for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++)
2416        {
2417            IOProfile *profile = mHwModules[i]->mInputProfiles[j];
2418            if (profile->isCompatibleProfile(device, samplingRate, format,
2419                                             channelMask,(audio_output_flags_t)0)) {
2420                return profile;
2421            }
2422        }
2423    }
2424    return NULL;
2425}
2426
2427audio_devices_t AudioPolicyManagerBase::getDeviceForInputSource(int inputSource)
2428{
2429    uint32_t device = AUDIO_DEVICE_NONE;
2430
2431    switch(inputSource) {
2432    case AUDIO_SOURCE_DEFAULT:
2433    case AUDIO_SOURCE_MIC:
2434    case AUDIO_SOURCE_VOICE_RECOGNITION:
2435    case AUDIO_SOURCE_VOICE_COMMUNICATION:
2436        if (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO &&
2437            mAvailableInputDevices & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
2438            device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
2439        } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_WIRED_HEADSET) {
2440            device = AUDIO_DEVICE_IN_WIRED_HEADSET;
2441        } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
2442            device = AUDIO_DEVICE_IN_BUILTIN_MIC;
2443        }
2444        break;
2445    case AUDIO_SOURCE_CAMCORDER:
2446        if (mAvailableInputDevices & AUDIO_DEVICE_IN_BACK_MIC) {
2447            device = AUDIO_DEVICE_IN_BACK_MIC;
2448        } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
2449            device = AUDIO_DEVICE_IN_BUILTIN_MIC;
2450        }
2451        break;
2452    case AUDIO_SOURCE_VOICE_UPLINK:
2453    case AUDIO_SOURCE_VOICE_DOWNLINK:
2454    case AUDIO_SOURCE_VOICE_CALL:
2455        if (mAvailableInputDevices & AUDIO_DEVICE_IN_VOICE_CALL) {
2456            device = AUDIO_DEVICE_IN_VOICE_CALL;
2457        }
2458        break;
2459    case AUDIO_SOURCE_REMOTE_SUBMIX:
2460        if (mAvailableInputDevices & AUDIO_DEVICE_IN_REMOTE_SUBMIX) {
2461            device = AUDIO_DEVICE_IN_REMOTE_SUBMIX;
2462        }
2463        break;
2464    default:
2465        ALOGW("getDeviceForInputSource() invalid input source %d", inputSource);
2466        break;
2467    }
2468    ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device);
2469    return device;
2470}
2471
2472bool AudioPolicyManagerBase::isVirtualInputDevice(audio_devices_t device)
2473{
2474    if ((device & AUDIO_DEVICE_BIT_IN) != 0) {
2475        device &= ~AUDIO_DEVICE_BIT_IN;
2476        if ((popcount(device) == 1) && ((device & ~APM_AUDIO_IN_DEVICE_VIRTUAL_ALL) == 0))
2477            return true;
2478    }
2479    return false;
2480}
2481
2482audio_io_handle_t AudioPolicyManagerBase::getActiveInput(bool ignoreVirtualInputs)
2483{
2484    for (size_t i = 0; i < mInputs.size(); i++) {
2485        const AudioInputDescriptor * input_descriptor = mInputs.valueAt(i);
2486        if ((input_descriptor->mRefCount > 0)
2487                && (!ignoreVirtualInputs || !isVirtualInputDevice(input_descriptor->mDevice))) {
2488            return mInputs.keyAt(i);
2489        }
2490    }
2491    return 0;
2492}
2493
2494
2495audio_devices_t AudioPolicyManagerBase::getDeviceForVolume(audio_devices_t device)
2496{
2497    if (device == AUDIO_DEVICE_NONE) {
2498        // this happens when forcing a route update and no track is active on an output.
2499        // In this case the returned category is not important.
2500        device =  AUDIO_DEVICE_OUT_SPEAKER;
2501    } else if (AudioSystem::popCount(device) > 1) {
2502        // Multiple device selection is either:
2503        //  - speaker + one other device: give priority to speaker in this case.
2504        //  - one A2DP device + another device: happens with duplicated output. In this case
2505        // retain the device on the A2DP output as the other must not correspond to an active
2506        // selection if not the speaker.
2507        if (device & AUDIO_DEVICE_OUT_SPEAKER) {
2508            device = AUDIO_DEVICE_OUT_SPEAKER;
2509        } else {
2510            device = (audio_devices_t)(device & AUDIO_DEVICE_OUT_ALL_A2DP);
2511        }
2512    }
2513
2514    ALOGW_IF(AudioSystem::popCount(device) != 1,
2515            "getDeviceForVolume() invalid device combination: %08x",
2516            device);
2517
2518    return device;
2519}
2520
2521AudioPolicyManagerBase::device_category AudioPolicyManagerBase::getDeviceCategory(audio_devices_t device)
2522{
2523    switch(getDeviceForVolume(device)) {
2524        case AUDIO_DEVICE_OUT_EARPIECE:
2525            return DEVICE_CATEGORY_EARPIECE;
2526        case AUDIO_DEVICE_OUT_WIRED_HEADSET:
2527        case AUDIO_DEVICE_OUT_WIRED_HEADPHONE:
2528        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO:
2529        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET:
2530        case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP:
2531        case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES:
2532            return DEVICE_CATEGORY_HEADSET;
2533        case AUDIO_DEVICE_OUT_SPEAKER:
2534        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT:
2535        case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER:
2536        case AUDIO_DEVICE_OUT_AUX_DIGITAL:
2537        case AUDIO_DEVICE_OUT_USB_ACCESSORY:
2538        case AUDIO_DEVICE_OUT_USB_DEVICE:
2539        case AUDIO_DEVICE_OUT_REMOTE_SUBMIX:
2540        default:
2541            return DEVICE_CATEGORY_SPEAKER;
2542    }
2543}
2544
2545float AudioPolicyManagerBase::volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc,
2546        int indexInUi)
2547{
2548    device_category deviceCategory = getDeviceCategory(device);
2549    const VolumeCurvePoint *curve = streamDesc.mVolumeCurve[deviceCategory];
2550
2551    // the volume index in the UI is relative to the min and max volume indices for this stream type
2552    int nbSteps = 1 + curve[VOLMAX].mIndex -
2553            curve[VOLMIN].mIndex;
2554    int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) /
2555            (streamDesc.mIndexMax - streamDesc.mIndexMin);
2556
2557    // find what part of the curve this index volume belongs to, or if it's out of bounds
2558    int segment = 0;
2559    if (volIdx < curve[VOLMIN].mIndex) {         // out of bounds
2560        return 0.0f;
2561    } else if (volIdx < curve[VOLKNEE1].mIndex) {
2562        segment = 0;
2563    } else if (volIdx < curve[VOLKNEE2].mIndex) {
2564        segment = 1;
2565    } else if (volIdx <= curve[VOLMAX].mIndex) {
2566        segment = 2;
2567    } else {                                                               // out of bounds
2568        return 1.0f;
2569    }
2570
2571    // linear interpolation in the attenuation table in dB
2572    float decibels = curve[segment].mDBAttenuation +
2573            ((float)(volIdx - curve[segment].mIndex)) *
2574                ( (curve[segment+1].mDBAttenuation -
2575                        curve[segment].mDBAttenuation) /
2576                    ((float)(curve[segment+1].mIndex -
2577                            curve[segment].mIndex)) );
2578
2579    float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 )
2580
2581    ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f",
2582            curve[segment].mIndex, volIdx,
2583            curve[segment+1].mIndex,
2584            curve[segment].mDBAttenuation,
2585            decibels,
2586            curve[segment+1].mDBAttenuation,
2587            amplification);
2588
2589    return amplification;
2590}
2591
2592const AudioPolicyManagerBase::VolumeCurvePoint
2593    AudioPolicyManagerBase::sDefaultVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2594    {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f}
2595};
2596
2597const AudioPolicyManagerBase::VolumeCurvePoint
2598    AudioPolicyManagerBase::sDefaultMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2599    {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f}
2600};
2601
2602const AudioPolicyManagerBase::VolumeCurvePoint
2603    AudioPolicyManagerBase::sSpeakerMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2604    {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f}
2605};
2606
2607const AudioPolicyManagerBase::VolumeCurvePoint
2608    AudioPolicyManagerBase::sSpeakerSonificationVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2609    {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f}
2610};
2611
2612// AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks
2613// AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets (See AudioService.java).
2614// The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset.
2615const AudioPolicyManagerBase::VolumeCurvePoint
2616    AudioPolicyManagerBase::sDefaultSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2617    {1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f}
2618};
2619
2620const AudioPolicyManagerBase::VolumeCurvePoint
2621    AudioPolicyManagerBase::sHeadsetSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2622    {1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f}
2623};
2624
2625const AudioPolicyManagerBase::VolumeCurvePoint
2626    AudioPolicyManagerBase::sDefaultVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2627    {0, -42.0f}, {33, -28.0f}, {66, -14.0f}, {100, 0.0f}
2628};
2629
2630const AudioPolicyManagerBase::VolumeCurvePoint
2631    AudioPolicyManagerBase::sSpeakerVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2632    {0, -24.0f}, {33, -16.0f}, {66, -8.0f}, {100, 0.0f}
2633};
2634
2635const AudioPolicyManagerBase::VolumeCurvePoint
2636            *AudioPolicyManagerBase::sVolumeProfiles[AUDIO_STREAM_CNT]
2637                                                   [AudioPolicyManagerBase::DEVICE_CATEGORY_CNT] = {
2638    { // AUDIO_STREAM_VOICE_CALL
2639        sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
2640        sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2641        sDefaultVoiceVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2642    },
2643    { // AUDIO_STREAM_SYSTEM
2644        sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2645        sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2646        sDefaultSystemVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2647    },
2648    { // AUDIO_STREAM_RING
2649        sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2650        sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2651        sDefaultVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2652    },
2653    { // AUDIO_STREAM_MUSIC
2654        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
2655        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2656        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2657    },
2658    { // AUDIO_STREAM_ALARM
2659        sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2660        sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2661        sDefaultVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2662    },
2663    { // AUDIO_STREAM_NOTIFICATION
2664        sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2665        sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2666        sDefaultVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2667    },
2668    { // AUDIO_STREAM_BLUETOOTH_SCO
2669        sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
2670        sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2671        sDefaultVoiceVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2672    },
2673    { // AUDIO_STREAM_ENFORCED_AUDIBLE
2674        sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2675        sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2676        sDefaultSystemVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2677    },
2678    {  // AUDIO_STREAM_DTMF
2679        sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2680        sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2681        sDefaultSystemVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2682    },
2683    { // AUDIO_STREAM_TTS
2684        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
2685        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2686        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2687    },
2688};
2689
2690void AudioPolicyManagerBase::initializeVolumeCurves()
2691{
2692    for (int i = 0; i < AUDIO_STREAM_CNT; i++) {
2693        for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) {
2694            mStreams[i].mVolumeCurve[j] =
2695                    sVolumeProfiles[i][j];
2696        }
2697    }
2698}
2699
2700float AudioPolicyManagerBase::computeVolume(int stream,
2701                                            int index,
2702                                            audio_io_handle_t output,
2703                                            audio_devices_t device)
2704{
2705    float volume = 1.0;
2706    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2707    StreamDescriptor &streamDesc = mStreams[stream];
2708
2709    if (device == AUDIO_DEVICE_NONE) {
2710        device = outputDesc->device();
2711    }
2712
2713    // if volume is not 0 (not muted), force media volume to max on digital output
2714    if (stream == AudioSystem::MUSIC &&
2715        index != mStreams[stream].mIndexMin &&
2716        (device == AUDIO_DEVICE_OUT_AUX_DIGITAL ||
2717         device == AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET ||
2718         device == AUDIO_DEVICE_OUT_USB_ACCESSORY ||
2719         device == AUDIO_DEVICE_OUT_USB_DEVICE)) {
2720        return 1.0;
2721    }
2722
2723    volume = volIndexToAmpl(device, streamDesc, index);
2724
2725    // if a headset is connected, apply the following rules to ring tones and notifications
2726    // to avoid sound level bursts in user's ears:
2727    // - always attenuate ring tones and notifications volume by 6dB
2728    // - if music is playing, always limit the volume to current music volume,
2729    // with a minimum threshold at -36dB so that notification is always perceived.
2730    const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream);
2731    if ((device & (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP |
2732            AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
2733            AUDIO_DEVICE_OUT_WIRED_HEADSET |
2734            AUDIO_DEVICE_OUT_WIRED_HEADPHONE)) &&
2735        ((stream_strategy == STRATEGY_SONIFICATION)
2736                || (stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL)
2737                || (stream == AudioSystem::SYSTEM)
2738                || ((stream_strategy == STRATEGY_ENFORCED_AUDIBLE) &&
2739                    (mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_NONE))) &&
2740        streamDesc.mCanBeMuted) {
2741        volume *= SONIFICATION_HEADSET_VOLUME_FACTOR;
2742        // when the phone is ringing we must consider that music could have been paused just before
2743        // by the music application and behave as if music was active if the last music track was
2744        // just stopped
2745        if (isStreamActive(AudioSystem::MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY) ||
2746                mLimitRingtoneVolume) {
2747            audio_devices_t musicDevice = getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/);
2748            float musicVol = computeVolume(AudioSystem::MUSIC,
2749                               mStreams[AudioSystem::MUSIC].getVolumeIndex(musicDevice),
2750                               output,
2751                               musicDevice);
2752            float minVol = (musicVol > SONIFICATION_HEADSET_VOLUME_MIN) ?
2753                                musicVol : SONIFICATION_HEADSET_VOLUME_MIN;
2754            if (volume > minVol) {
2755                volume = minVol;
2756                ALOGV("computeVolume limiting volume to %f musicVol %f", minVol, musicVol);
2757            }
2758        }
2759    }
2760
2761    return volume;
2762}
2763
2764status_t AudioPolicyManagerBase::checkAndSetVolume(int stream,
2765                                                   int index,
2766                                                   audio_io_handle_t output,
2767                                                   audio_devices_t device,
2768                                                   int delayMs,
2769                                                   bool force)
2770{
2771
2772    // do not change actual stream volume if the stream is muted
2773    if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) {
2774        ALOGVV("checkAndSetVolume() stream %d muted count %d",
2775              stream, mOutputs.valueFor(output)->mMuteCount[stream]);
2776        return NO_ERROR;
2777    }
2778
2779    // do not change in call volume if bluetooth is connected and vice versa
2780    if ((stream == AudioSystem::VOICE_CALL && mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) ||
2781        (stream == AudioSystem::BLUETOOTH_SCO && mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO)) {
2782        ALOGV("checkAndSetVolume() cannot set stream %d volume with force use = %d for comm",
2783             stream, mForceUse[AudioSystem::FOR_COMMUNICATION]);
2784        return INVALID_OPERATION;
2785    }
2786
2787    float volume = computeVolume(stream, index, output, device);
2788    // We actually change the volume if:
2789    // - the float value returned by computeVolume() changed
2790    // - the force flag is set
2791    if (volume != mOutputs.valueFor(output)->mCurVolume[stream] ||
2792            force) {
2793        mOutputs.valueFor(output)->mCurVolume[stream] = volume;
2794        ALOGVV("checkAndSetVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs);
2795        // Force VOICE_CALL to track BLUETOOTH_SCO stream volume when bluetooth audio is
2796        // enabled
2797        if (stream == AudioSystem::BLUETOOTH_SCO) {
2798            mpClientInterface->setStreamVolume(AudioSystem::VOICE_CALL, volume, output, delayMs);
2799        }
2800        mpClientInterface->setStreamVolume((AudioSystem::stream_type)stream, volume, output, delayMs);
2801    }
2802
2803    if (stream == AudioSystem::VOICE_CALL ||
2804        stream == AudioSystem::BLUETOOTH_SCO) {
2805        float voiceVolume;
2806        // Force voice volume to max for bluetooth SCO as volume is managed by the headset
2807        if (stream == AudioSystem::VOICE_CALL) {
2808            voiceVolume = (float)index/(float)mStreams[stream].mIndexMax;
2809        } else {
2810            voiceVolume = 1.0;
2811        }
2812
2813        if (voiceVolume != mLastVoiceVolume && output == mPrimaryOutput) {
2814            mpClientInterface->setVoiceVolume(voiceVolume, delayMs);
2815            mLastVoiceVolume = voiceVolume;
2816        }
2817    }
2818
2819    return NO_ERROR;
2820}
2821
2822void AudioPolicyManagerBase::applyStreamVolumes(audio_io_handle_t output,
2823                                                audio_devices_t device,
2824                                                int delayMs,
2825                                                bool force)
2826{
2827    ALOGVV("applyStreamVolumes() for output %d and device %x", output, device);
2828
2829    for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
2830        checkAndSetVolume(stream,
2831                          mStreams[stream].getVolumeIndex(device),
2832                          output,
2833                          device,
2834                          delayMs,
2835                          force);
2836    }
2837}
2838
2839void AudioPolicyManagerBase::setStrategyMute(routing_strategy strategy,
2840                                             bool on,
2841                                             audio_io_handle_t output,
2842                                             int delayMs,
2843                                             audio_devices_t device)
2844{
2845    ALOGVV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output);
2846    for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
2847        if (getStrategy((AudioSystem::stream_type)stream) == strategy) {
2848            setStreamMute(stream, on, output, delayMs, device);
2849        }
2850    }
2851}
2852
2853void AudioPolicyManagerBase::setStreamMute(int stream,
2854                                           bool on,
2855                                           audio_io_handle_t output,
2856                                           int delayMs,
2857                                           audio_devices_t device)
2858{
2859    StreamDescriptor &streamDesc = mStreams[stream];
2860    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2861    if (device == AUDIO_DEVICE_NONE) {
2862        device = outputDesc->device();
2863    }
2864
2865    ALOGVV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d device %04x",
2866          stream, on, output, outputDesc->mMuteCount[stream], device);
2867
2868    if (on) {
2869        if (outputDesc->mMuteCount[stream] == 0) {
2870            if (streamDesc.mCanBeMuted &&
2871                    ((stream != AudioSystem::ENFORCED_AUDIBLE) ||
2872                     (mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_NONE))) {
2873                checkAndSetVolume(stream, 0, output, device, delayMs);
2874            }
2875        }
2876        // increment mMuteCount after calling checkAndSetVolume() so that volume change is not ignored
2877        outputDesc->mMuteCount[stream]++;
2878    } else {
2879        if (outputDesc->mMuteCount[stream] == 0) {
2880            ALOGV("setStreamMute() unmuting non muted stream!");
2881            return;
2882        }
2883        if (--outputDesc->mMuteCount[stream] == 0) {
2884            checkAndSetVolume(stream,
2885                              streamDesc.getVolumeIndex(device),
2886                              output,
2887                              device,
2888                              delayMs);
2889        }
2890    }
2891}
2892
2893void AudioPolicyManagerBase::handleIncallSonification(int stream, bool starting, bool stateChange)
2894{
2895    // if the stream pertains to sonification strategy and we are in call we must
2896    // mute the stream if it is low visibility. If it is high visibility, we must play a tone
2897    // in the device used for phone strategy and play the tone if the selected device does not
2898    // interfere with the device used for phone strategy
2899    // if stateChange is true, we are called from setPhoneState() and we must mute or unmute as
2900    // many times as there are active tracks on the output
2901    const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream);
2902    if ((stream_strategy == STRATEGY_SONIFICATION) ||
2903            ((stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL))) {
2904        AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mPrimaryOutput);
2905        ALOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d",
2906                stream, starting, outputDesc->mDevice, stateChange);
2907        if (outputDesc->mRefCount[stream]) {
2908            int muteCount = 1;
2909            if (stateChange) {
2910                muteCount = outputDesc->mRefCount[stream];
2911            }
2912            if (AudioSystem::isLowVisibility((AudioSystem::stream_type)stream)) {
2913                ALOGV("handleIncallSonification() low visibility, muteCount %d", muteCount);
2914                for (int i = 0; i < muteCount; i++) {
2915                    setStreamMute(stream, starting, mPrimaryOutput);
2916                }
2917            } else {
2918                ALOGV("handleIncallSonification() high visibility");
2919                if (outputDesc->device() &
2920                        getDeviceForStrategy(STRATEGY_PHONE, true /*fromCache*/)) {
2921                    ALOGV("handleIncallSonification() high visibility muted, muteCount %d", muteCount);
2922                    for (int i = 0; i < muteCount; i++) {
2923                        setStreamMute(stream, starting, mPrimaryOutput);
2924                    }
2925                }
2926                if (starting) {
2927                    mpClientInterface->startTone(ToneGenerator::TONE_SUP_CALL_WAITING, AudioSystem::VOICE_CALL);
2928                } else {
2929                    mpClientInterface->stopTone();
2930                }
2931            }
2932        }
2933    }
2934}
2935
2936bool AudioPolicyManagerBase::isInCall()
2937{
2938    return isStateInCall(mPhoneState);
2939}
2940
2941bool AudioPolicyManagerBase::isStateInCall(int state) {
2942    return ((state == AudioSystem::MODE_IN_CALL) ||
2943            (state == AudioSystem::MODE_IN_COMMUNICATION));
2944}
2945
2946bool AudioPolicyManagerBase::needsDirectOuput(audio_stream_type_t stream,
2947                                              uint32_t samplingRate,
2948                                              audio_format_t format,
2949                                              audio_channel_mask_t channelMask,
2950                                              audio_output_flags_t flags,
2951                                              audio_devices_t device)
2952{
2953   return ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) ||
2954          (format != 0 && !AudioSystem::isLinearPCM(format)));
2955}
2956
2957uint32_t AudioPolicyManagerBase::getMaxEffectsCpuLoad()
2958{
2959    return MAX_EFFECTS_CPU_LOAD;
2960}
2961
2962uint32_t AudioPolicyManagerBase::getMaxEffectsMemory()
2963{
2964    return MAX_EFFECTS_MEMORY;
2965}
2966
2967// --- AudioOutputDescriptor class implementation
2968
2969AudioPolicyManagerBase::AudioOutputDescriptor::AudioOutputDescriptor(
2970        const IOProfile *profile)
2971    : mId(0), mSamplingRate(0), mFormat((audio_format_t)0),
2972      mChannelMask((audio_channel_mask_t)0), mLatency(0),
2973    mFlags((audio_output_flags_t)0), mDevice(AUDIO_DEVICE_NONE),
2974    mOutput1(0), mOutput2(0), mProfile(profile)
2975{
2976    // clear usage count for all stream types
2977    for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
2978        mRefCount[i] = 0;
2979        mCurVolume[i] = -1.0;
2980        mMuteCount[i] = 0;
2981        mStopTime[i] = 0;
2982    }
2983    for (int i = 0; i < NUM_STRATEGIES; i++) {
2984        mStrategyMutedByDevice[i] = false;
2985    }
2986    if (profile != NULL) {
2987        mSamplingRate = profile->mSamplingRates[0];
2988        mFormat = profile->mFormats[0];
2989        mChannelMask = profile->mChannelMasks[0];
2990        mFlags = profile->mFlags;
2991    }
2992}
2993
2994audio_devices_t AudioPolicyManagerBase::AudioOutputDescriptor::device()
2995{
2996    if (isDuplicated()) {
2997        return (audio_devices_t)(mOutput1->mDevice | mOutput2->mDevice);
2998    } else {
2999        return mDevice;
3000    }
3001}
3002
3003uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::latency()
3004{
3005    if (isDuplicated()) {
3006        return (mOutput1->mLatency > mOutput2->mLatency) ? mOutput1->mLatency : mOutput2->mLatency;
3007    } else {
3008        return mLatency;
3009    }
3010}
3011
3012bool AudioPolicyManagerBase::AudioOutputDescriptor::sharesHwModuleWith(
3013        const AudioOutputDescriptor *outputDesc)
3014{
3015    if (isDuplicated()) {
3016        return mOutput1->sharesHwModuleWith(outputDesc) || mOutput2->sharesHwModuleWith(outputDesc);
3017    } else if (outputDesc->isDuplicated()){
3018        return sharesHwModuleWith(outputDesc->mOutput1) || sharesHwModuleWith(outputDesc->mOutput2);
3019    } else {
3020        return (mProfile->mModule == outputDesc->mProfile->mModule);
3021    }
3022}
3023
3024void AudioPolicyManagerBase::AudioOutputDescriptor::changeRefCount(AudioSystem::stream_type stream, int delta)
3025{
3026    // forward usage count change to attached outputs
3027    if (isDuplicated()) {
3028        mOutput1->changeRefCount(stream, delta);
3029        mOutput2->changeRefCount(stream, delta);
3030    }
3031    if ((delta + (int)mRefCount[stream]) < 0) {
3032        ALOGW("changeRefCount() invalid delta %d for stream %d, refCount %d", delta, stream, mRefCount[stream]);
3033        mRefCount[stream] = 0;
3034        return;
3035    }
3036    mRefCount[stream] += delta;
3037    ALOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]);
3038}
3039
3040uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::refCount()
3041{
3042    uint32_t refcount = 0;
3043    for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
3044        refcount += mRefCount[i];
3045    }
3046    return refcount;
3047}
3048
3049uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::strategyRefCount(routing_strategy strategy)
3050{
3051    uint32_t refCount = 0;
3052    for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
3053        if (getStrategy((AudioSystem::stream_type)i) == strategy) {
3054            refCount += mRefCount[i];
3055        }
3056    }
3057    return refCount;
3058}
3059
3060audio_devices_t AudioPolicyManagerBase::AudioOutputDescriptor::supportedDevices()
3061{
3062    if (isDuplicated()) {
3063        return (audio_devices_t)(mOutput1->supportedDevices() | mOutput2->supportedDevices());
3064    } else {
3065        return mProfile->mSupportedDevices ;
3066    }
3067}
3068
3069bool AudioPolicyManagerBase::AudioOutputDescriptor::isActive(uint32_t inPastMs) const
3070{
3071    nsecs_t sysTime = systemTime();
3072    for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
3073        if (mRefCount[i] != 0 ||
3074            ns2ms(sysTime - mStopTime[i]) < inPastMs) {
3075            return true;
3076        }
3077    }
3078    return false;
3079}
3080
3081status_t AudioPolicyManagerBase::AudioOutputDescriptor::dump(int fd)
3082{
3083    const size_t SIZE = 256;
3084    char buffer[SIZE];
3085    String8 result;
3086
3087    snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
3088    result.append(buffer);
3089    snprintf(buffer, SIZE, " Format: %d\n", mFormat);
3090    result.append(buffer);
3091    snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask);
3092    result.append(buffer);
3093    snprintf(buffer, SIZE, " Latency: %d\n", mLatency);
3094    result.append(buffer);
3095    snprintf(buffer, SIZE, " Flags %08x\n", mFlags);
3096    result.append(buffer);
3097    snprintf(buffer, SIZE, " Devices %08x\n", device());
3098    result.append(buffer);
3099    snprintf(buffer, SIZE, " Stream volume refCount muteCount\n");
3100    result.append(buffer);
3101    for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
3102        snprintf(buffer, SIZE, " %02d     %.03f     %02d       %02d\n", i, mCurVolume[i], mRefCount[i], mMuteCount[i]);
3103        result.append(buffer);
3104    }
3105    write(fd, result.string(), result.size());
3106
3107    return NO_ERROR;
3108}
3109
3110// --- AudioInputDescriptor class implementation
3111
3112AudioPolicyManagerBase::AudioInputDescriptor::AudioInputDescriptor(const IOProfile *profile)
3113    : mSamplingRate(0), mFormat((audio_format_t)0), mChannelMask((audio_channel_mask_t)0),
3114      mDevice(AUDIO_DEVICE_NONE), mRefCount(0),
3115      mInputSource(0), mProfile(profile)
3116{
3117}
3118
3119status_t AudioPolicyManagerBase::AudioInputDescriptor::dump(int fd)
3120{
3121    const size_t SIZE = 256;
3122    char buffer[SIZE];
3123    String8 result;
3124
3125    snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
3126    result.append(buffer);
3127    snprintf(buffer, SIZE, " Format: %d\n", mFormat);
3128    result.append(buffer);
3129    snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask);
3130    result.append(buffer);
3131    snprintf(buffer, SIZE, " Devices %08x\n", mDevice);
3132    result.append(buffer);
3133    snprintf(buffer, SIZE, " Ref Count %d\n", mRefCount);
3134    result.append(buffer);
3135    write(fd, result.string(), result.size());
3136
3137    return NO_ERROR;
3138}
3139
3140// --- StreamDescriptor class implementation
3141
3142AudioPolicyManagerBase::StreamDescriptor::StreamDescriptor()
3143    :   mIndexMin(0), mIndexMax(1), mCanBeMuted(true)
3144{
3145    mIndexCur.add(AUDIO_DEVICE_OUT_DEFAULT, 0);
3146}
3147
3148int AudioPolicyManagerBase::StreamDescriptor::getVolumeIndex(audio_devices_t device)
3149{
3150    device = AudioPolicyManagerBase::getDeviceForVolume(device);
3151    // there is always a valid entry for AUDIO_DEVICE_OUT_DEFAULT
3152    if (mIndexCur.indexOfKey(device) < 0) {
3153        device = AUDIO_DEVICE_OUT_DEFAULT;
3154    }
3155    return mIndexCur.valueFor(device);
3156}
3157
3158void AudioPolicyManagerBase::StreamDescriptor::dump(int fd)
3159{
3160    const size_t SIZE = 256;
3161    char buffer[SIZE];
3162    String8 result;
3163
3164    snprintf(buffer, SIZE, "%s         %02d         %02d         ",
3165             mCanBeMuted ? "true " : "false", mIndexMin, mIndexMax);
3166    result.append(buffer);
3167    for (size_t i = 0; i < mIndexCur.size(); i++) {
3168        snprintf(buffer, SIZE, "%04x : %02d, ",
3169                 mIndexCur.keyAt(i),
3170                 mIndexCur.valueAt(i));
3171        result.append(buffer);
3172    }
3173    result.append("\n");
3174
3175    write(fd, result.string(), result.size());
3176}
3177
3178// --- EffectDescriptor class implementation
3179
3180status_t AudioPolicyManagerBase::EffectDescriptor::dump(int fd)
3181{
3182    const size_t SIZE = 256;
3183    char buffer[SIZE];
3184    String8 result;
3185
3186    snprintf(buffer, SIZE, " I/O: %d\n", mIo);
3187    result.append(buffer);
3188    snprintf(buffer, SIZE, " Strategy: %d\n", mStrategy);
3189    result.append(buffer);
3190    snprintf(buffer, SIZE, " Session: %d\n", mSession);
3191    result.append(buffer);
3192    snprintf(buffer, SIZE, " Name: %s\n",  mDesc.name);
3193    result.append(buffer);
3194    snprintf(buffer, SIZE, " %s\n",  mEnabled ? "Enabled" : "Disabled");
3195    result.append(buffer);
3196    write(fd, result.string(), result.size());
3197
3198    return NO_ERROR;
3199}
3200
3201// --- IOProfile class implementation
3202
3203AudioPolicyManagerBase::HwModule::HwModule(const char *name)
3204    : mName(strndup(name, AUDIO_HARDWARE_MODULE_ID_MAX_LEN)), mHandle(0)
3205{
3206}
3207
3208AudioPolicyManagerBase::HwModule::~HwModule()
3209{
3210    for (size_t i = 0; i < mOutputProfiles.size(); i++) {
3211         delete mOutputProfiles[i];
3212    }
3213    for (size_t i = 0; i < mInputProfiles.size(); i++) {
3214         delete mInputProfiles[i];
3215    }
3216    free((void *)mName);
3217}
3218
3219void AudioPolicyManagerBase::HwModule::dump(int fd)
3220{
3221    const size_t SIZE = 256;
3222    char buffer[SIZE];
3223    String8 result;
3224
3225    snprintf(buffer, SIZE, "  - name: %s\n", mName);
3226    result.append(buffer);
3227    snprintf(buffer, SIZE, "  - handle: %d\n", mHandle);
3228    result.append(buffer);
3229    write(fd, result.string(), result.size());
3230    if (mOutputProfiles.size()) {
3231        write(fd, "  - outputs:\n", sizeof("  - outputs:\n"));
3232        for (size_t i = 0; i < mOutputProfiles.size(); i++) {
3233            snprintf(buffer, SIZE, "    output %d:\n", i);
3234            write(fd, buffer, strlen(buffer));
3235            mOutputProfiles[i]->dump(fd);
3236        }
3237    }
3238    if (mInputProfiles.size()) {
3239        write(fd, "  - inputs:\n", sizeof("  - inputs:\n"));
3240        for (size_t i = 0; i < mInputProfiles.size(); i++) {
3241            snprintf(buffer, SIZE, "    input %d:\n", i);
3242            write(fd, buffer, strlen(buffer));
3243            mInputProfiles[i]->dump(fd);
3244        }
3245    }
3246}
3247
3248AudioPolicyManagerBase::IOProfile::IOProfile(HwModule *module)
3249    : mFlags((audio_output_flags_t)0), mModule(module)
3250{
3251}
3252
3253AudioPolicyManagerBase::IOProfile::~IOProfile()
3254{
3255}
3256
3257// checks if the IO profile is compatible with specified parameters. By convention a value of 0
3258// means a parameter is don't care
3259bool AudioPolicyManagerBase::IOProfile::isCompatibleProfile(audio_devices_t device,
3260                                                            uint32_t samplingRate,
3261                                                            uint32_t format,
3262                                                            uint32_t channelMask,
3263                                                            audio_output_flags_t flags) const
3264{
3265    if ((mSupportedDevices & device) != device) {
3266        return false;
3267    }
3268    if ((mFlags & flags) != flags) {
3269        return false;
3270    }
3271    if (samplingRate != 0) {
3272        size_t i;
3273        for (i = 0; i < mSamplingRates.size(); i++)
3274        {
3275            if (mSamplingRates[i] == samplingRate) {
3276                break;
3277            }
3278        }
3279        if (i == mSamplingRates.size()) {
3280            return false;
3281        }
3282    }
3283    if (format != 0) {
3284        size_t i;
3285        for (i = 0; i < mFormats.size(); i++)
3286        {
3287            if (mFormats[i] == format) {
3288                break;
3289            }
3290        }
3291        if (i == mFormats.size()) {
3292            return false;
3293        }
3294    }
3295    if (channelMask != 0) {
3296        size_t i;
3297        for (i = 0; i < mChannelMasks.size(); i++)
3298        {
3299            if (mChannelMasks[i] == channelMask) {
3300                break;
3301            }
3302        }
3303        if (i == mChannelMasks.size()) {
3304            return false;
3305        }
3306    }
3307    return true;
3308}
3309
3310void AudioPolicyManagerBase::IOProfile::dump(int fd)
3311{
3312    const size_t SIZE = 256;
3313    char buffer[SIZE];
3314    String8 result;
3315
3316    snprintf(buffer, SIZE, "    - sampling rates: ");
3317    result.append(buffer);
3318    for (size_t i = 0; i < mSamplingRates.size(); i++) {
3319        snprintf(buffer, SIZE, "%d", mSamplingRates[i]);
3320        result.append(buffer);
3321        result.append(i == (mSamplingRates.size() - 1) ? "\n" : ", ");
3322    }
3323
3324    snprintf(buffer, SIZE, "    - channel masks: ");
3325    result.append(buffer);
3326    for (size_t i = 0; i < mChannelMasks.size(); i++) {
3327        snprintf(buffer, SIZE, "%04x", mChannelMasks[i]);
3328        result.append(buffer);
3329        result.append(i == (mChannelMasks.size() - 1) ? "\n" : ", ");
3330    }
3331
3332    snprintf(buffer, SIZE, "    - formats: ");
3333    result.append(buffer);
3334    for (size_t i = 0; i < mFormats.size(); i++) {
3335        snprintf(buffer, SIZE, "%d", mFormats[i]);
3336        result.append(buffer);
3337        result.append(i == (mFormats.size() - 1) ? "\n" : ", ");
3338    }
3339
3340    snprintf(buffer, SIZE, "    - devices: %04x\n", mSupportedDevices);
3341    result.append(buffer);
3342    snprintf(buffer, SIZE, "    - flags: %04x\n", mFlags);
3343    result.append(buffer);
3344
3345    write(fd, result.string(), result.size());
3346}
3347
3348// --- audio_policy.conf file parsing
3349
3350struct StringToEnum {
3351    const char *name;
3352    uint32_t value;
3353};
3354
3355#define STRING_TO_ENUM(string) { #string, string }
3356#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
3357
3358const struct StringToEnum sDeviceNameToEnumTable[] = {
3359    STRING_TO_ENUM(AUDIO_DEVICE_OUT_EARPIECE),
3360    STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPEAKER),
3361    STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADSET),
3362    STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADPHONE),
3363    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_SCO),
3364    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_A2DP),
3365    STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_DIGITAL),
3366    STRING_TO_ENUM(AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET),
3367    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET),
3368    STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_DEVICE),
3369    STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_ACCESSORY),
3370    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_USB),
3371    STRING_TO_ENUM(AUDIO_DEVICE_OUT_REMOTE_SUBMIX),
3372    STRING_TO_ENUM(AUDIO_DEVICE_IN_BUILTIN_MIC),
3373    STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET),
3374    STRING_TO_ENUM(AUDIO_DEVICE_IN_WIRED_HEADSET),
3375    STRING_TO_ENUM(AUDIO_DEVICE_IN_AUX_DIGITAL),
3376    STRING_TO_ENUM(AUDIO_DEVICE_IN_VOICE_CALL),
3377    STRING_TO_ENUM(AUDIO_DEVICE_IN_BACK_MIC),
3378    STRING_TO_ENUM(AUDIO_DEVICE_IN_REMOTE_SUBMIX),
3379    STRING_TO_ENUM(AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET),
3380    STRING_TO_ENUM(AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET),
3381    STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_ACCESSORY),
3382};
3383
3384const struct StringToEnum sFlagNameToEnumTable[] = {
3385    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DIRECT),
3386    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_PRIMARY),
3387    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_FAST),
3388    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DEEP_BUFFER),
3389};
3390
3391const struct StringToEnum sFormatNameToEnumTable[] = {
3392    STRING_TO_ENUM(AUDIO_FORMAT_PCM_16_BIT),
3393    STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_BIT),
3394    STRING_TO_ENUM(AUDIO_FORMAT_MP3),
3395    STRING_TO_ENUM(AUDIO_FORMAT_AAC),
3396    STRING_TO_ENUM(AUDIO_FORMAT_VORBIS),
3397};
3398
3399const struct StringToEnum sOutChannelsNameToEnumTable[] = {
3400    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_MONO),
3401    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO),
3402    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1),
3403    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1),
3404};
3405
3406const struct StringToEnum sInChannelsNameToEnumTable[] = {
3407    STRING_TO_ENUM(AUDIO_CHANNEL_IN_MONO),
3408    STRING_TO_ENUM(AUDIO_CHANNEL_IN_STEREO),
3409    STRING_TO_ENUM(AUDIO_CHANNEL_IN_FRONT_BACK),
3410};
3411
3412
3413uint32_t AudioPolicyManagerBase::stringToEnum(const struct StringToEnum *table,
3414                                              size_t size,
3415                                              const char *name)
3416{
3417    for (size_t i = 0; i < size; i++) {
3418        if (strcmp(table[i].name, name) == 0) {
3419            ALOGV("stringToEnum() found %s", table[i].name);
3420            return table[i].value;
3421        }
3422    }
3423    return 0;
3424}
3425
3426audio_output_flags_t AudioPolicyManagerBase::parseFlagNames(char *name)
3427{
3428    uint32_t flag = 0;
3429
3430    // it is OK to cast name to non const here as we are not going to use it after
3431    // strtok() modifies it
3432    char *flagName = strtok(name, "|");
3433    while (flagName != NULL) {
3434        if (strlen(flagName) != 0) {
3435            flag |= stringToEnum(sFlagNameToEnumTable,
3436                               ARRAY_SIZE(sFlagNameToEnumTable),
3437                               flagName);
3438        }
3439        flagName = strtok(NULL, "|");
3440    }
3441    return (audio_output_flags_t)flag;
3442}
3443
3444audio_devices_t AudioPolicyManagerBase::parseDeviceNames(char *name)
3445{
3446    uint32_t device = 0;
3447
3448    char *devName = strtok(name, "|");
3449    while (devName != NULL) {
3450        if (strlen(devName) != 0) {
3451            device |= stringToEnum(sDeviceNameToEnumTable,
3452                                 ARRAY_SIZE(sDeviceNameToEnumTable),
3453                                 devName);
3454        }
3455        devName = strtok(NULL, "|");
3456    }
3457    return device;
3458}
3459
3460void AudioPolicyManagerBase::loadSamplingRates(char *name, IOProfile *profile)
3461{
3462    char *str = strtok(name, "|");
3463
3464    // by convention, "0' in the first entry in mSamplingRates indicates the supported sampling
3465    // rates should be read from the output stream after it is opened for the first time
3466    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3467        profile->mSamplingRates.add(0);
3468        return;
3469    }
3470
3471    while (str != NULL) {
3472        uint32_t rate = atoi(str);
3473        if (rate != 0) {
3474            ALOGV("loadSamplingRates() adding rate %d", rate);
3475            profile->mSamplingRates.add(rate);
3476        }
3477        str = strtok(NULL, "|");
3478    }
3479    return;
3480}
3481
3482void AudioPolicyManagerBase::loadFormats(char *name, IOProfile *profile)
3483{
3484    char *str = strtok(name, "|");
3485
3486    // by convention, "0' in the first entry in mFormats indicates the supported formats
3487    // should be read from the output stream after it is opened for the first time
3488    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3489        profile->mFormats.add((audio_format_t)0);
3490        return;
3491    }
3492
3493    while (str != NULL) {
3494        audio_format_t format = (audio_format_t)stringToEnum(sFormatNameToEnumTable,
3495                                                             ARRAY_SIZE(sFormatNameToEnumTable),
3496                                                             str);
3497        if (format != 0) {
3498            profile->mFormats.add(format);
3499        }
3500        str = strtok(NULL, "|");
3501    }
3502    return;
3503}
3504
3505void AudioPolicyManagerBase::loadInChannels(char *name, IOProfile *profile)
3506{
3507    const char *str = strtok(name, "|");
3508
3509    ALOGV("loadInChannels() %s", name);
3510
3511    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3512        profile->mChannelMasks.add((audio_channel_mask_t)0);
3513        return;
3514    }
3515
3516    while (str != NULL) {
3517        audio_channel_mask_t channelMask =
3518                (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable,
3519                                                   ARRAY_SIZE(sInChannelsNameToEnumTable),
3520                                                   str);
3521        if (channelMask != 0) {
3522            ALOGV("loadInChannels() adding channelMask %04x", channelMask);
3523            profile->mChannelMasks.add(channelMask);
3524        }
3525        str = strtok(NULL, "|");
3526    }
3527    return;
3528}
3529
3530void AudioPolicyManagerBase::loadOutChannels(char *name, IOProfile *profile)
3531{
3532    const char *str = strtok(name, "|");
3533
3534    ALOGV("loadOutChannels() %s", name);
3535
3536    // by convention, "0' in the first entry in mChannelMasks indicates the supported channel
3537    // masks should be read from the output stream after it is opened for the first time
3538    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3539        profile->mChannelMasks.add((audio_channel_mask_t)0);
3540        return;
3541    }
3542
3543    while (str != NULL) {
3544        audio_channel_mask_t channelMask =
3545                (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable,
3546                                                   ARRAY_SIZE(sOutChannelsNameToEnumTable),
3547                                                   str);
3548        if (channelMask != 0) {
3549            profile->mChannelMasks.add(channelMask);
3550        }
3551        str = strtok(NULL, "|");
3552    }
3553    return;
3554}
3555
3556status_t AudioPolicyManagerBase::loadInput(cnode *root, HwModule *module)
3557{
3558    cnode *node = root->first_child;
3559
3560    IOProfile *profile = new IOProfile(module);
3561
3562    while (node) {
3563        if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) {
3564            loadSamplingRates((char *)node->value, profile);
3565        } else if (strcmp(node->name, FORMATS_TAG) == 0) {
3566            loadFormats((char *)node->value, profile);
3567        } else if (strcmp(node->name, CHANNELS_TAG) == 0) {
3568            loadInChannels((char *)node->value, profile);
3569        } else if (strcmp(node->name, DEVICES_TAG) == 0) {
3570            profile->mSupportedDevices = parseDeviceNames((char *)node->value);
3571        }
3572        node = node->next;
3573    }
3574    ALOGW_IF(profile->mSupportedDevices == AUDIO_DEVICE_NONE,
3575            "loadInput() invalid supported devices");
3576    ALOGW_IF(profile->mChannelMasks.size() == 0,
3577            "loadInput() invalid supported channel masks");
3578    ALOGW_IF(profile->mSamplingRates.size() == 0,
3579            "loadInput() invalid supported sampling rates");
3580    ALOGW_IF(profile->mFormats.size() == 0,
3581            "loadInput() invalid supported formats");
3582    if ((profile->mSupportedDevices != AUDIO_DEVICE_NONE) &&
3583            (profile->mChannelMasks.size() != 0) &&
3584            (profile->mSamplingRates.size() != 0) &&
3585            (profile->mFormats.size() != 0)) {
3586
3587        ALOGV("loadInput() adding input mSupportedDevices %04x", profile->mSupportedDevices);
3588
3589        module->mInputProfiles.add(profile);
3590        return NO_ERROR;
3591    } else {
3592        delete profile;
3593        return BAD_VALUE;
3594    }
3595}
3596
3597status_t AudioPolicyManagerBase::loadOutput(cnode *root, HwModule *module)
3598{
3599    cnode *node = root->first_child;
3600
3601    IOProfile *profile = new IOProfile(module);
3602
3603    while (node) {
3604        if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) {
3605            loadSamplingRates((char *)node->value, profile);
3606        } else if (strcmp(node->name, FORMATS_TAG) == 0) {
3607            loadFormats((char *)node->value, profile);
3608        } else if (strcmp(node->name, CHANNELS_TAG) == 0) {
3609            loadOutChannels((char *)node->value, profile);
3610        } else if (strcmp(node->name, DEVICES_TAG) == 0) {
3611            profile->mSupportedDevices = parseDeviceNames((char *)node->value);
3612        } else if (strcmp(node->name, FLAGS_TAG) == 0) {
3613            profile->mFlags = parseFlagNames((char *)node->value);
3614        }
3615        node = node->next;
3616    }
3617    ALOGW_IF(profile->mSupportedDevices == AUDIO_DEVICE_NONE,
3618            "loadOutput() invalid supported devices");
3619    ALOGW_IF(profile->mChannelMasks.size() == 0,
3620            "loadOutput() invalid supported channel masks");
3621    ALOGW_IF(profile->mSamplingRates.size() == 0,
3622            "loadOutput() invalid supported sampling rates");
3623    ALOGW_IF(profile->mFormats.size() == 0,
3624            "loadOutput() invalid supported formats");
3625    if ((profile->mSupportedDevices != AUDIO_DEVICE_NONE) &&
3626            (profile->mChannelMasks.size() != 0) &&
3627            (profile->mSamplingRates.size() != 0) &&
3628            (profile->mFormats.size() != 0)) {
3629
3630        ALOGV("loadOutput() adding output mSupportedDevices %04x, mFlags %04x",
3631              profile->mSupportedDevices, profile->mFlags);
3632
3633        module->mOutputProfiles.add(profile);
3634        return NO_ERROR;
3635    } else {
3636        delete profile;
3637        return BAD_VALUE;
3638    }
3639}
3640
3641void AudioPolicyManagerBase::loadHwModule(cnode *root)
3642{
3643    cnode *node = config_find(root, OUTPUTS_TAG);
3644    status_t status = NAME_NOT_FOUND;
3645
3646    HwModule *module = new HwModule(root->name);
3647
3648    if (node != NULL) {
3649        if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_A2DP) == 0) {
3650            mHasA2dp = true;
3651        } else if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_USB) == 0) {
3652            mHasUsb = true;
3653        } else if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX) == 0) {
3654            mHasRemoteSubmix = true;
3655        }
3656
3657        node = node->first_child;
3658        while (node) {
3659            ALOGV("loadHwModule() loading output %s", node->name);
3660            status_t tmpStatus = loadOutput(node, module);
3661            if (status == NAME_NOT_FOUND || status == NO_ERROR) {
3662                status = tmpStatus;
3663            }
3664            node = node->next;
3665        }
3666    }
3667    node = config_find(root, INPUTS_TAG);
3668    if (node != NULL) {
3669        node = node->first_child;
3670        while (node) {
3671            ALOGV("loadHwModule() loading input %s", node->name);
3672            status_t tmpStatus = loadInput(node, module);
3673            if (status == NAME_NOT_FOUND || status == NO_ERROR) {
3674                status = tmpStatus;
3675            }
3676            node = node->next;
3677        }
3678    }
3679    if (status == NO_ERROR) {
3680        mHwModules.add(module);
3681    } else {
3682        delete module;
3683    }
3684}
3685
3686void AudioPolicyManagerBase::loadHwModules(cnode *root)
3687{
3688    cnode *node = config_find(root, AUDIO_HW_MODULE_TAG);
3689    if (node == NULL) {
3690        return;
3691    }
3692
3693    node = node->first_child;
3694    while (node) {
3695        ALOGV("loadHwModules() loading module %s", node->name);
3696        loadHwModule(node);
3697        node = node->next;
3698    }
3699}
3700
3701void AudioPolicyManagerBase::loadGlobalConfig(cnode *root)
3702{
3703    cnode *node = config_find(root, GLOBAL_CONFIG_TAG);
3704    if (node == NULL) {
3705        return;
3706    }
3707    node = node->first_child;
3708    while (node) {
3709        if (strcmp(ATTACHED_OUTPUT_DEVICES_TAG, node->name) == 0) {
3710            mAttachedOutputDevices = parseDeviceNames((char *)node->value);
3711            ALOGW_IF(mAttachedOutputDevices == AUDIO_DEVICE_NONE,
3712                    "loadGlobalConfig() no attached output devices");
3713            ALOGV("loadGlobalConfig() mAttachedOutputDevices %04x", mAttachedOutputDevices);
3714        } else if (strcmp(DEFAULT_OUTPUT_DEVICE_TAG, node->name) == 0) {
3715            mDefaultOutputDevice = (audio_devices_t)stringToEnum(sDeviceNameToEnumTable,
3716                                              ARRAY_SIZE(sDeviceNameToEnumTable),
3717                                              (char *)node->value);
3718            ALOGW_IF(mDefaultOutputDevice == AUDIO_DEVICE_NONE,
3719                    "loadGlobalConfig() default device not specified");
3720            ALOGV("loadGlobalConfig() mDefaultOutputDevice %04x", mDefaultOutputDevice);
3721        } else if (strcmp(ATTACHED_INPUT_DEVICES_TAG, node->name) == 0) {
3722            mAvailableInputDevices = parseDeviceNames((char *)node->value) & ~AUDIO_DEVICE_BIT_IN;
3723            ALOGV("loadGlobalConfig() mAvailableInputDevices %04x", mAvailableInputDevices);
3724        }
3725        node = node->next;
3726    }
3727}
3728
3729status_t AudioPolicyManagerBase::loadAudioPolicyConfig(const char *path)
3730{
3731    cnode *root;
3732    char *data;
3733
3734    data = (char *)load_file(path, NULL);
3735    if (data == NULL) {
3736        return -ENODEV;
3737    }
3738    root = config_node("", "");
3739    config_load(root, data);
3740
3741    loadGlobalConfig(root);
3742    loadHwModules(root);
3743
3744    config_free(root);
3745    free(root);
3746    free(data);
3747
3748    ALOGI("loadAudioPolicyConfig() loaded %s\n", path);
3749
3750    return NO_ERROR;
3751}
3752
3753void AudioPolicyManagerBase::defaultAudioPolicyConfig(void)
3754{
3755    HwModule *module;
3756    IOProfile *profile;
3757
3758    mDefaultOutputDevice = AUDIO_DEVICE_OUT_SPEAKER;
3759    mAttachedOutputDevices = AUDIO_DEVICE_OUT_SPEAKER;
3760    mAvailableInputDevices = AUDIO_DEVICE_IN_BUILTIN_MIC & ~AUDIO_DEVICE_BIT_IN;
3761
3762    module = new HwModule("primary");
3763
3764    profile = new IOProfile(module);
3765    profile->mSamplingRates.add(44100);
3766    profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT);
3767    profile->mChannelMasks.add(AUDIO_CHANNEL_OUT_STEREO);
3768    profile->mSupportedDevices = AUDIO_DEVICE_OUT_SPEAKER;
3769    profile->mFlags = AUDIO_OUTPUT_FLAG_PRIMARY;
3770    module->mOutputProfiles.add(profile);
3771
3772    profile = new IOProfile(module);
3773    profile->mSamplingRates.add(8000);
3774    profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT);
3775    profile->mChannelMasks.add(AUDIO_CHANNEL_IN_MONO);
3776    profile->mSupportedDevices = AUDIO_DEVICE_IN_BUILTIN_MIC;
3777    module->mInputProfiles.add(profile);
3778
3779    mHwModules.add(module);
3780}
3781
3782}; // namespace android
3783