AudioPolicyManagerBase.cpp revision f32e38e24db196671d3ea43427125a4e212466fa 
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// A device mask for all audio output devices that are considered "remote" when evaluating
31// active output devices in isStreamActiveRemotely()
32#define APM_AUDIO_OUT_DEVICE_REMOTE_ALL  AUDIO_DEVICE_OUT_REMOTE_SUBMIX
33
34#include <utils/Log.h>
35#include <hardware_legacy/AudioPolicyManagerBase.h>
36#include <hardware/audio_effect.h>
37#include <hardware/audio.h>
38#include <math.h>
39#include <hardware_legacy/audio_policy_conf.h>
40
41namespace android_audio_legacy {
42
43// ----------------------------------------------------------------------------
44// AudioPolicyInterface implementation
45// ----------------------------------------------------------------------------
46
47
48status_t AudioPolicyManagerBase::setDeviceConnectionState(audio_devices_t device,
49                                                  AudioSystem::device_connection_state state,
50                                                  const char *device_address)
51{
52    SortedVector <audio_io_handle_t> outputs;
53
54    ALOGV("setDeviceConnectionState() device: %x, state %d, address %s", device, state, device_address);
55
56    // connect/disconnect only 1 device at a time
57    if (!audio_is_output_device(device) && !audio_is_input_device(device)) return BAD_VALUE;
58
59    if (strlen(device_address) >= MAX_DEVICE_ADDRESS_LEN) {
60        ALOGE("setDeviceConnectionState() invalid address: %s", device_address);
61        return BAD_VALUE;
62    }
63
64    // handle output devices
65    if (audio_is_output_device(device)) {
66
67        if (!mHasA2dp && audio_is_a2dp_device(device)) {
68            ALOGE("setDeviceConnectionState() invalid A2DP device: %x", device);
69            return BAD_VALUE;
70        }
71        if (!mHasUsb && audio_is_usb_device(device)) {
72            ALOGE("setDeviceConnectionState() invalid USB audio device: %x", device);
73            return BAD_VALUE;
74        }
75        if (!mHasRemoteSubmix && audio_is_remote_submix_device((audio_devices_t)device)) {
76            ALOGE("setDeviceConnectionState() invalid remote submix audio device: %x", device);
77            return BAD_VALUE;
78        }
79
80        // save a copy of the opened output descriptors before any output is opened or closed
81        // by checkOutputsForDevice(). This will be needed by checkOutputForAllStrategies()
82        mPreviousOutputs = mOutputs;
83        switch (state)
84        {
85        // handle output device connection
86        case AudioSystem::DEVICE_STATE_AVAILABLE:
87            if (mAvailableOutputDevices & device) {
88                ALOGW("setDeviceConnectionState() device already connected: %x", device);
89                return INVALID_OPERATION;
90            }
91            ALOGV("setDeviceConnectionState() connecting device %x", device);
92
93            if (checkOutputsForDevice(device, state, outputs) != NO_ERROR) {
94                return INVALID_OPERATION;
95            }
96            ALOGV("setDeviceConnectionState() checkOutputsForDevice() returned %d outputs",
97                  outputs.size());
98            // register new device as available
99            mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices | device);
100
101            if (!outputs.isEmpty()) {
102                String8 paramStr;
103                if (mHasA2dp && audio_is_a2dp_device(device)) {
104                    // handle A2DP device connection
105                    AudioParameter param;
106                    param.add(String8(AUDIO_PARAMETER_A2DP_SINK_ADDRESS), String8(device_address));
107                    paramStr = param.toString();
108                    mA2dpDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
109                    mA2dpSuspended = false;
110                } else if (audio_is_bluetooth_sco_device(device)) {
111                    // handle SCO device connection
112                    mScoDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
113                } else if (mHasUsb && audio_is_usb_device(device)) {
114                    // handle USB device connection
115                    mUsbCardAndDevice = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
116                    paramStr = mUsbCardAndDevice;
117                }
118                // not currently handling multiple simultaneous submixes: ignoring remote submix
119                //   case and address
120                if (!paramStr.isEmpty()) {
121                    for (size_t i = 0; i < outputs.size(); i++) {
122                        mpClientInterface->setParameters(outputs[i], paramStr);
123                    }
124                }
125            }
126            break;
127        // handle output device disconnection
128        case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
129            if (!(mAvailableOutputDevices & device)) {
130                ALOGW("setDeviceConnectionState() device not connected: %x", device);
131                return INVALID_OPERATION;
132            }
133
134            ALOGV("setDeviceConnectionState() disconnecting device %x", device);
135            // remove device from available output devices
136            mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices & ~device);
137
138            checkOutputsForDevice(device, state, outputs);
139            if (mHasA2dp && audio_is_a2dp_device(device)) {
140                // handle A2DP device disconnection
141                mA2dpDeviceAddress = "";
142                mA2dpSuspended = false;
143            } else if (audio_is_bluetooth_sco_device(device)) {
144                // handle SCO device disconnection
145                mScoDeviceAddress = "";
146            } else if (mHasUsb && audio_is_usb_device(device)) {
147                // handle USB device disconnection
148                mUsbCardAndDevice = "";
149            }
150            // not currently handling multiple simultaneous submixes: ignoring remote submix
151            //   case and address
152            } break;
153
154        default:
155            ALOGE("setDeviceConnectionState() invalid state: %x", state);
156            return BAD_VALUE;
157        }
158
159        checkA2dpSuspend();
160        checkOutputForAllStrategies();
161        // outputs must be closed after checkOutputForAllStrategies() is executed
162        if (!outputs.isEmpty()) {
163            for (size_t i = 0; i < outputs.size(); i++) {
164                // close unused outputs after device disconnection or direct outputs that have been
165                // opened by checkOutputsForDevice() to query dynamic parameters
166                if ((state == AudioSystem::DEVICE_STATE_UNAVAILABLE) ||
167                        (mOutputs.valueFor(outputs[i])->mFlags & AUDIO_OUTPUT_FLAG_DIRECT)) {
168                    closeOutput(outputs[i]);
169                }
170            }
171        }
172
173        updateDevicesAndOutputs();
174        for (size_t i = 0; i < mOutputs.size(); i++) {
175            // do not force device change on duplicated output because if device is 0, it will
176            // also force a device 0 for the two outputs it is duplicated to which may override
177            // a valid device selection on those outputs.
178            setOutputDevice(mOutputs.keyAt(i),
179                            getNewDevice(mOutputs.keyAt(i), true /*fromCache*/),
180                            !mOutputs.valueAt(i)->isDuplicated(),
181                            0);
182        }
183
184        if (device == AUDIO_DEVICE_OUT_WIRED_HEADSET) {
185            device = AUDIO_DEVICE_IN_WIRED_HEADSET;
186        } else if (device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO ||
187                   device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET ||
188                   device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT) {
189            device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
190        } else {
191            return NO_ERROR;
192        }
193    }
194    // handle input devices
195    if (audio_is_input_device(device)) {
196
197        switch (state)
198        {
199        // handle input device connection
200        case AudioSystem::DEVICE_STATE_AVAILABLE: {
201            if (mAvailableInputDevices & device) {
202                ALOGW("setDeviceConnectionState() device already connected: %d", device);
203                return INVALID_OPERATION;
204            }
205            mAvailableInputDevices = mAvailableInputDevices | (device & ~AUDIO_DEVICE_BIT_IN);
206            }
207            break;
208
209        // handle input device disconnection
210        case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
211            if (!(mAvailableInputDevices & device)) {
212                ALOGW("setDeviceConnectionState() device not connected: %d", device);
213                return INVALID_OPERATION;
214            }
215            mAvailableInputDevices = (audio_devices_t) (mAvailableInputDevices & ~device);
216            } break;
217
218        default:
219            ALOGE("setDeviceConnectionState() invalid state: %x", state);
220            return BAD_VALUE;
221        }
222
223        audio_io_handle_t activeInput = getActiveInput();
224        if (activeInput != 0) {
225            AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
226            audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
227            if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
228                ALOGV("setDeviceConnectionState() changing device from %x to %x for input %d",
229                        inputDesc->mDevice, newDevice, activeInput);
230                inputDesc->mDevice = newDevice;
231                AudioParameter param = AudioParameter();
232                param.addInt(String8(AudioParameter::keyRouting), (int)newDevice);
233                mpClientInterface->setParameters(activeInput, param.toString());
234            }
235        }
236
237        return NO_ERROR;
238    }
239
240    ALOGW("setDeviceConnectionState() invalid device: %x", device);
241    return BAD_VALUE;
242}
243
244AudioSystem::device_connection_state AudioPolicyManagerBase::getDeviceConnectionState(audio_devices_t device,
245                                                  const char *device_address)
246{
247    AudioSystem::device_connection_state state = AudioSystem::DEVICE_STATE_UNAVAILABLE;
248    String8 address = String8(device_address);
249    if (audio_is_output_device(device)) {
250        if (device & mAvailableOutputDevices) {
251            if (audio_is_a2dp_device(device) &&
252                (!mHasA2dp || (address != "" && mA2dpDeviceAddress != address))) {
253                return state;
254            }
255            if (audio_is_bluetooth_sco_device(device) &&
256                address != "" && mScoDeviceAddress != address) {
257                return state;
258            }
259            if (audio_is_usb_device(device) &&
260                (!mHasUsb || (address != "" && mUsbCardAndDevice != address))) {
261                ALOGE("getDeviceConnectionState() invalid device: %x", device);
262                return state;
263            }
264            if (audio_is_remote_submix_device((audio_devices_t)device) && !mHasRemoteSubmix) {
265                return state;
266            }
267            state = AudioSystem::DEVICE_STATE_AVAILABLE;
268        }
269    } else if (audio_is_input_device(device)) {
270        if (device & mAvailableInputDevices) {
271            state = AudioSystem::DEVICE_STATE_AVAILABLE;
272        }
273    }
274
275    return state;
276}
277
278void AudioPolicyManagerBase::setPhoneState(int state)
279{
280    ALOGV("setPhoneState() state %d", state);
281    audio_devices_t newDevice = AUDIO_DEVICE_NONE;
282    if (state < 0 || state >= AudioSystem::NUM_MODES) {
283        ALOGW("setPhoneState() invalid state %d", state);
284        return;
285    }
286
287    if (state == mPhoneState ) {
288        ALOGW("setPhoneState() setting same state %d", state);
289        return;
290    }
291
292    // if leaving call state, handle special case of active streams
293    // pertaining to sonification strategy see handleIncallSonification()
294    if (isInCall()) {
295        ALOGV("setPhoneState() in call state management: new state is %d", state);
296        for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
297            handleIncallSonification(stream, false, true);
298        }
299    }
300
301    // store previous phone state for management of sonification strategy below
302    int oldState = mPhoneState;
303    mPhoneState = state;
304    bool force = false;
305
306    // are we entering or starting a call
307    if (!isStateInCall(oldState) && isStateInCall(state)) {
308        ALOGV("  Entering call in setPhoneState()");
309        // force routing command to audio hardware when starting a call
310        // even if no device change is needed
311        force = true;
312    } else if (isStateInCall(oldState) && !isStateInCall(state)) {
313        ALOGV("  Exiting call in setPhoneState()");
314        // force routing command to audio hardware when exiting a call
315        // even if no device change is needed
316        force = true;
317    } else if (isStateInCall(state) && (state != oldState)) {
318        ALOGV("  Switching between telephony and VoIP in setPhoneState()");
319        // force routing command to audio hardware when switching between telephony and VoIP
320        // even if no device change is needed
321        force = true;
322    }
323
324    // check for device and output changes triggered by new phone state
325    newDevice = getNewDevice(mPrimaryOutput, false /*fromCache*/);
326    checkA2dpSuspend();
327    checkOutputForAllStrategies();
328    updateDevicesAndOutputs();
329
330    AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mPrimaryOutput);
331
332    // force routing command to audio hardware when ending call
333    // even if no device change is needed
334    if (isStateInCall(oldState) && newDevice == AUDIO_DEVICE_NONE) {
335        newDevice = hwOutputDesc->device();
336    }
337
338    // when changing from ring tone to in call mode, mute the ringing tone
339    // immediately and delay the route change to avoid sending the ring tone
340    // tail into the earpiece or headset.
341    int delayMs = 0;
342    if (isStateInCall(state) && oldState == AudioSystem::MODE_RINGTONE) {
343        // delay the device change command by twice the output latency to have some margin
344        // and be sure that audio buffers not yet affected by the mute are out when
345        // we actually apply the route change
346        delayMs = hwOutputDesc->mLatency*2;
347        setStreamMute(AudioSystem::RING, true, mPrimaryOutput);
348    }
349
350    if (isStateInCall(state)) {
351        for (size_t i = 0; i < mOutputs.size(); i++) {
352            AudioOutputDescriptor *desc = mOutputs.valueAt(i);
353            // mute strategy media and delay device switch by the largest latency of any output
354            // where strategy media is active.
355            if (desc->strategyRefCount(STRATEGY_MEDIA) != 0) {
356                if (delayMs < (int)desc->mLatency*2) {
357                    delayMs = desc->mLatency*2;
358                }
359                setStrategyMute(STRATEGY_MEDIA, true, mOutputs.keyAt(i));
360                setStrategyMute(STRATEGY_MEDIA, false, mOutputs.keyAt(i), MUTE_TIME_MS,
361                    getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/));
362            }
363        }
364    }
365
366    // change routing is necessary
367    setOutputDevice(mPrimaryOutput, newDevice, force, delayMs);
368
369    // if entering in call state, handle special case of active streams
370    // pertaining to sonification strategy see handleIncallSonification()
371    if (isStateInCall(state)) {
372        ALOGV("setPhoneState() in call state management: new state is %d", state);
373        // unmute the ringing tone after a sufficient delay if it was muted before
374        // setting output device above
375        if (oldState == AudioSystem::MODE_RINGTONE) {
376            setStreamMute(AudioSystem::RING, false, mPrimaryOutput, MUTE_TIME_MS);
377        }
378        for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
379            handleIncallSonification(stream, true, true);
380        }
381    }
382
383    // Flag that ringtone volume must be limited to music volume until we exit MODE_RINGTONE
384    if (state == AudioSystem::MODE_RINGTONE &&
385        isStreamActive(AudioSystem::MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY)) {
386        mLimitRingtoneVolume = true;
387    } else {
388        mLimitRingtoneVolume = false;
389    }
390}
391
392void AudioPolicyManagerBase::setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config)
393{
394    ALOGV("setForceUse() usage %d, config %d, mPhoneState %d", usage, config, mPhoneState);
395
396    bool forceVolumeReeval = false;
397    switch(usage) {
398    case AudioSystem::FOR_COMMUNICATION:
399        if (config != AudioSystem::FORCE_SPEAKER && config != AudioSystem::FORCE_BT_SCO &&
400            config != AudioSystem::FORCE_NONE) {
401            ALOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config);
402            return;
403        }
404        forceVolumeReeval = true;
405        mForceUse[usage] = config;
406        break;
407    case AudioSystem::FOR_MEDIA:
408        if (config != AudioSystem::FORCE_HEADPHONES && config != AudioSystem::FORCE_BT_A2DP &&
409            config != AudioSystem::FORCE_WIRED_ACCESSORY &&
410            config != AudioSystem::FORCE_ANALOG_DOCK &&
411            config != AudioSystem::FORCE_DIGITAL_DOCK && config != AudioSystem::FORCE_NONE &&
412            config != AudioSystem::FORCE_NO_BT_A2DP) {
413            ALOGW("setForceUse() invalid config %d for FOR_MEDIA", config);
414            return;
415        }
416        mForceUse[usage] = config;
417        break;
418    case AudioSystem::FOR_RECORD:
419        if (config != AudioSystem::FORCE_BT_SCO && config != AudioSystem::FORCE_WIRED_ACCESSORY &&
420            config != AudioSystem::FORCE_NONE) {
421            ALOGW("setForceUse() invalid config %d for FOR_RECORD", config);
422            return;
423        }
424        mForceUse[usage] = config;
425        break;
426    case AudioSystem::FOR_DOCK:
427        if (config != AudioSystem::FORCE_NONE && config != AudioSystem::FORCE_BT_CAR_DOCK &&
428            config != AudioSystem::FORCE_BT_DESK_DOCK &&
429            config != AudioSystem::FORCE_WIRED_ACCESSORY &&
430            config != AudioSystem::FORCE_ANALOG_DOCK &&
431            config != AudioSystem::FORCE_DIGITAL_DOCK) {
432            ALOGW("setForceUse() invalid config %d for FOR_DOCK", config);
433        }
434        forceVolumeReeval = true;
435        mForceUse[usage] = config;
436        break;
437    case AudioSystem::FOR_SYSTEM:
438        if (config != AudioSystem::FORCE_NONE &&
439            config != AudioSystem::FORCE_SYSTEM_ENFORCED) {
440            ALOGW("setForceUse() invalid config %d for FOR_SYSTEM", config);
441        }
442        forceVolumeReeval = true;
443        mForceUse[usage] = config;
444        break;
445    default:
446        ALOGW("setForceUse() invalid usage %d", usage);
447        break;
448    }
449
450    // check for device and output changes triggered by new force usage
451    checkA2dpSuspend();
452    checkOutputForAllStrategies();
453    updateDevicesAndOutputs();
454    for (size_t i = 0; i < mOutputs.size(); i++) {
455        audio_io_handle_t output = mOutputs.keyAt(i);
456        audio_devices_t newDevice = getNewDevice(output, true /*fromCache*/);
457        setOutputDevice(output, newDevice, (newDevice != AUDIO_DEVICE_NONE));
458        if (forceVolumeReeval && (newDevice != AUDIO_DEVICE_NONE)) {
459            applyStreamVolumes(output, newDevice, 0, true);
460        }
461    }
462
463    audio_io_handle_t activeInput = getActiveInput();
464    if (activeInput != 0) {
465        AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
466        audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
467        if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
468            ALOGV("setForceUse() changing device from %x to %x for input %d",
469                    inputDesc->mDevice, newDevice, activeInput);
470            inputDesc->mDevice = newDevice;
471            AudioParameter param = AudioParameter();
472            param.addInt(String8(AudioParameter::keyRouting), (int)newDevice);
473            mpClientInterface->setParameters(activeInput, param.toString());
474        }
475    }
476
477}
478
479AudioSystem::forced_config AudioPolicyManagerBase::getForceUse(AudioSystem::force_use usage)
480{
481    return mForceUse[usage];
482}
483
484void AudioPolicyManagerBase::setSystemProperty(const char* property, const char* value)
485{
486    ALOGV("setSystemProperty() property %s, value %s", property, value);
487}
488
489AudioPolicyManagerBase::IOProfile *AudioPolicyManagerBase::getProfileForDirectOutput(
490                                                               audio_devices_t device,
491                                                               uint32_t samplingRate,
492                                                               uint32_t format,
493                                                               uint32_t channelMask,
494                                                               audio_output_flags_t flags)
495{
496    for (size_t i = 0; i < mHwModules.size(); i++) {
497        if (mHwModules[i]->mHandle == 0) {
498            continue;
499        }
500        for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) {
501           IOProfile *profile = mHwModules[i]->mOutputProfiles[j];
502           if (profile->isCompatibleProfile(device, samplingRate, format,
503                                           channelMask,
504                                           AUDIO_OUTPUT_FLAG_DIRECT)) {
505               if (mAvailableOutputDevices & profile->mSupportedDevices) {
506                   return mHwModules[i]->mOutputProfiles[j];
507               }
508           }
509        }
510    }
511    return 0;
512}
513
514audio_io_handle_t AudioPolicyManagerBase::getOutput(AudioSystem::stream_type stream,
515                                    uint32_t samplingRate,
516                                    uint32_t format,
517                                    uint32_t channelMask,
518                                    AudioSystem::output_flags flags)
519{
520    audio_io_handle_t output = 0;
521    uint32_t latency = 0;
522    routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream);
523    audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/);
524    ALOGV("getOutput() stream %d, samplingRate %d, format %d, channelMask %x, flags %x",
525          stream, samplingRate, format, channelMask, flags);
526
527#ifdef AUDIO_POLICY_TEST
528    if (mCurOutput != 0) {
529        ALOGV("getOutput() test output mCurOutput %d, samplingRate %d, format %d, channelMask %x, mDirectOutput %d",
530                mCurOutput, mTestSamplingRate, mTestFormat, mTestChannels, mDirectOutput);
531
532        if (mTestOutputs[mCurOutput] == 0) {
533            ALOGV("getOutput() opening test output");
534            AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL);
535            outputDesc->mDevice = mTestDevice;
536            outputDesc->mSamplingRate = mTestSamplingRate;
537            outputDesc->mFormat = mTestFormat;
538            outputDesc->mChannelMask = mTestChannels;
539            outputDesc->mLatency = mTestLatencyMs;
540            outputDesc->mFlags = (audio_output_flags_t)(mDirectOutput ? AudioSystem::OUTPUT_FLAG_DIRECT : 0);
541            outputDesc->mRefCount[stream] = 0;
542            mTestOutputs[mCurOutput] = mpClientInterface->openOutput(0, &outputDesc->mDevice,
543                                            &outputDesc->mSamplingRate,
544                                            &outputDesc->mFormat,
545                                            &outputDesc->mChannelMask,
546                                            &outputDesc->mLatency,
547                                            outputDesc->mFlags);
548            if (mTestOutputs[mCurOutput]) {
549                AudioParameter outputCmd = AudioParameter();
550                outputCmd.addInt(String8("set_id"),mCurOutput);
551                mpClientInterface->setParameters(mTestOutputs[mCurOutput],outputCmd.toString());
552                addOutput(mTestOutputs[mCurOutput], outputDesc);
553            }
554        }
555        return mTestOutputs[mCurOutput];
556    }
557#endif //AUDIO_POLICY_TEST
558
559    // open a direct output if required by specified parameters
560    IOProfile *profile = getProfileForDirectOutput(device,
561                                                   samplingRate,
562                                                   format,
563                                                   channelMask,
564                                                   (audio_output_flags_t)flags);
565    if (profile != NULL) {
566
567        ALOGV("getOutput() opening direct output device %x", device);
568
569        AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(profile);
570        outputDesc->mDevice = device;
571        outputDesc->mSamplingRate = samplingRate;
572        outputDesc->mFormat = (audio_format_t)format;
573        outputDesc->mChannelMask = (audio_channel_mask_t)channelMask;
574        outputDesc->mLatency = 0;
575        outputDesc->mFlags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_DIRECT);;
576        outputDesc->mRefCount[stream] = 0;
577        outputDesc->mStopTime[stream] = 0;
578        output = mpClientInterface->openOutput(profile->mModule->mHandle,
579                                        &outputDesc->mDevice,
580                                        &outputDesc->mSamplingRate,
581                                        &outputDesc->mFormat,
582                                        &outputDesc->mChannelMask,
583                                        &outputDesc->mLatency,
584                                        outputDesc->mFlags);
585
586        // only accept an output with the requested parameters
587        if (output == 0 ||
588            (samplingRate != 0 && samplingRate != outputDesc->mSamplingRate) ||
589            (format != 0 && format != outputDesc->mFormat) ||
590            (channelMask != 0 && channelMask != outputDesc->mChannelMask)) {
591            ALOGV("getOutput() failed opening direct output: output %d samplingRate %d %d,"
592                    "format %d %d, channelMask %04x %04x", output, samplingRate,
593                    outputDesc->mSamplingRate, format, outputDesc->mFormat, channelMask,
594                    outputDesc->mChannelMask);
595            if (output != 0) {
596                mpClientInterface->closeOutput(output);
597            }
598            delete outputDesc;
599            return 0;
600        }
601        addOutput(output, outputDesc);
602        ALOGV("getOutput() returns direct output %d", output);
603        return output;
604    }
605
606    // ignoring channel mask due to downmix capability in mixer
607
608    // open a non direct output
609
610    // get which output is suitable for the specified stream. The actual routing change will happen
611    // when startOutput() will be called
612    SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(device, mOutputs);
613
614    output = selectOutput(outputs, flags);
615
616    ALOGW_IF((output ==0), "getOutput() could not find output for stream %d, samplingRate %d,"
617            "format %d, channels %x, flags %x", stream, samplingRate, format, channelMask, flags);
618
619    ALOGV("getOutput() returns output %d", output);
620
621    return output;
622}
623
624audio_io_handle_t AudioPolicyManagerBase::selectOutput(const SortedVector<audio_io_handle_t>& outputs,
625                                                       AudioSystem::output_flags flags)
626{
627    // select one output among several that provide a path to a particular device or set of
628    // devices (the list was previously build by getOutputsForDevice()).
629    // The priority is as follows:
630    // 1: the output with the highest number of requested policy flags
631    // 2: the primary output
632    // 3: the first output in the list
633
634    if (outputs.size() == 0) {
635        return 0;
636    }
637    if (outputs.size() == 1) {
638        return outputs[0];
639    }
640
641    int maxCommonFlags = 0;
642    audio_io_handle_t outputFlags = 0;
643    audio_io_handle_t outputPrimary = 0;
644
645    for (size_t i = 0; i < outputs.size(); i++) {
646        AudioOutputDescriptor *outputDesc = mOutputs.valueFor(outputs[i]);
647        if (!outputDesc->isDuplicated()) {
648            int commonFlags = (int)AudioSystem::popCount(outputDesc->mProfile->mFlags & flags);
649            if (commonFlags > maxCommonFlags) {
650                outputFlags = outputs[i];
651                maxCommonFlags = commonFlags;
652                ALOGV("selectOutput() commonFlags for output %d, %04x", outputs[i], commonFlags);
653            }
654            if (outputDesc->mProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) {
655                outputPrimary = outputs[i];
656            }
657        }
658    }
659
660    if (outputFlags != 0) {
661        return outputFlags;
662    }
663    if (outputPrimary != 0) {
664        return outputPrimary;
665    }
666
667    return outputs[0];
668}
669
670status_t AudioPolicyManagerBase::startOutput(audio_io_handle_t output,
671                                             AudioSystem::stream_type stream,
672                                             int session)
673{
674    ALOGV("startOutput() output %d, stream %d, session %d", output, stream, session);
675    ssize_t index = mOutputs.indexOfKey(output);
676    if (index < 0) {
677        ALOGW("startOutput() unknow output %d", output);
678        return BAD_VALUE;
679    }
680
681    AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
682
683    // increment usage count for this stream on the requested output:
684    // NOTE that the usage count is the same for duplicated output and hardware output which is
685    // necessary for a correct control of hardware output routing by startOutput() and stopOutput()
686    outputDesc->changeRefCount(stream, 1);
687
688    if (outputDesc->mRefCount[stream] == 1) {
689        audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/);
690        routing_strategy strategy = getStrategy(stream);
691        bool shouldWait = (strategy == STRATEGY_SONIFICATION) ||
692                            (strategy == STRATEGY_SONIFICATION_RESPECTFUL);
693        uint32_t waitMs = 0;
694        bool force = false;
695        for (size_t i = 0; i < mOutputs.size(); i++) {
696            AudioOutputDescriptor *desc = mOutputs.valueAt(i);
697            if (desc != outputDesc) {
698                // force a device change if any other output is managed by the same hw
699                // module and has a current device selection that differs from selected device.
700                // In this case, the audio HAL must receive the new device selection so that it can
701                // change the device currently selected by the other active output.
702                if (outputDesc->sharesHwModuleWith(desc) &&
703                    desc->device() != newDevice) {
704                    force = true;
705                }
706                // wait for audio on other active outputs to be presented when starting
707                // a notification so that audio focus effect can propagate.
708                uint32_t latency = desc->latency();
709                if (shouldWait && desc->isActive(latency * 2) && (waitMs < latency)) {
710                    waitMs = latency;
711                }
712            }
713        }
714        uint32_t muteWaitMs = setOutputDevice(output, newDevice, force);
715
716        // handle special case for sonification while in call
717        if (isInCall()) {
718            handleIncallSonification(stream, true, false);
719        }
720
721        // apply volume rules for current stream and device if necessary
722        checkAndSetVolume(stream,
723                          mStreams[stream].getVolumeIndex(newDevice),
724                          output,
725                          newDevice);
726
727        // update the outputs if starting an output with a stream that can affect notification
728        // routing
729        handleNotificationRoutingForStream(stream);
730        if (waitMs > muteWaitMs) {
731            usleep((waitMs - muteWaitMs) * 2 * 1000);
732        }
733    }
734    return NO_ERROR;
735}
736
737
738status_t AudioPolicyManagerBase::stopOutput(audio_io_handle_t output,
739                                            AudioSystem::stream_type stream,
740                                            int session)
741{
742    ALOGV("stopOutput() output %d, stream %d, session %d", output, stream, session);
743    ssize_t index = mOutputs.indexOfKey(output);
744    if (index < 0) {
745        ALOGW("stopOutput() unknow output %d", output);
746        return BAD_VALUE;
747    }
748
749    AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
750
751    // handle special case for sonification while in call
752    if (isInCall()) {
753        handleIncallSonification(stream, false, false);
754    }
755
756    if (outputDesc->mRefCount[stream] > 0) {
757        // decrement usage count of this stream on the output
758        outputDesc->changeRefCount(stream, -1);
759        // store time at which the stream was stopped - see isStreamActive()
760        if (outputDesc->mRefCount[stream] == 0) {
761            outputDesc->mStopTime[stream] = systemTime();
762            audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/);
763            // delay the device switch by twice the latency because stopOutput() is executed when
764            // the track stop() command is received and at that time the audio track buffer can
765            // still contain data that needs to be drained. The latency only covers the audio HAL
766            // and kernel buffers. Also the latency does not always include additional delay in the
767            // audio path (audio DSP, CODEC ...)
768            setOutputDevice(output, newDevice, false, outputDesc->mLatency*2);
769
770            // force restoring the device selection on other active outputs if it differs from the
771            // one being selected for this output
772            for (size_t i = 0; i < mOutputs.size(); i++) {
773                audio_io_handle_t curOutput = mOutputs.keyAt(i);
774                AudioOutputDescriptor *desc = mOutputs.valueAt(i);
775                if (curOutput != output &&
776                        desc->refCount() != 0 &&
777                        outputDesc->sharesHwModuleWith(desc) &&
778                        newDevice != desc->device()) {
779                    setOutputDevice(curOutput,
780                                    getNewDevice(curOutput, false /*fromCache*/),
781                                    true,
782                                    outputDesc->mLatency*2);
783                }
784            }
785            // update the outputs if stopping one with a stream that can affect notification routing
786            handleNotificationRoutingForStream(stream);
787        }
788        return NO_ERROR;
789    } else {
790        ALOGW("stopOutput() refcount is already 0 for output %d", output);
791        return INVALID_OPERATION;
792    }
793}
794
795void AudioPolicyManagerBase::releaseOutput(audio_io_handle_t output)
796{
797    ALOGV("releaseOutput() %d", output);
798    ssize_t index = mOutputs.indexOfKey(output);
799    if (index < 0) {
800        ALOGW("releaseOutput() releasing unknown output %d", output);
801        return;
802    }
803
804#ifdef AUDIO_POLICY_TEST
805    int testIndex = testOutputIndex(output);
806    if (testIndex != 0) {
807        AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
808        if (outputDesc->refCount() == 0) {
809            mpClientInterface->closeOutput(output);
810            delete mOutputs.valueAt(index);
811            mOutputs.removeItem(output);
812            mTestOutputs[testIndex] = 0;
813        }
814        return;
815    }
816#endif //AUDIO_POLICY_TEST
817
818    if (mOutputs.valueAt(index)->mFlags & AudioSystem::OUTPUT_FLAG_DIRECT) {
819        mpClientInterface->closeOutput(output);
820        delete mOutputs.valueAt(index);
821        mOutputs.removeItem(output);
822        mPreviousOutputs = mOutputs;
823    }
824
825}
826
827audio_io_handle_t AudioPolicyManagerBase::getInput(int inputSource,
828                                    uint32_t samplingRate,
829                                    uint32_t format,
830                                    uint32_t channelMask,
831                                    AudioSystem::audio_in_acoustics acoustics)
832{
833    audio_io_handle_t input = 0;
834    audio_devices_t device = getDeviceForInputSource(inputSource);
835
836    ALOGV("getInput() inputSource %d, samplingRate %d, format %d, channelMask %x, acoustics %x",
837          inputSource, samplingRate, format, channelMask, acoustics);
838
839    if (device == AUDIO_DEVICE_NONE) {
840        ALOGW("getInput() could not find device for inputSource %d", inputSource);
841        return 0;
842    }
843
844    // adapt channel selection to input source
845    switch(inputSource) {
846    case AUDIO_SOURCE_VOICE_UPLINK:
847        channelMask = AudioSystem::CHANNEL_IN_VOICE_UPLINK;
848        break;
849    case AUDIO_SOURCE_VOICE_DOWNLINK:
850        channelMask = AudioSystem::CHANNEL_IN_VOICE_DNLINK;
851        break;
852    case AUDIO_SOURCE_VOICE_CALL:
853        channelMask = (AudioSystem::CHANNEL_IN_VOICE_UPLINK | AudioSystem::CHANNEL_IN_VOICE_DNLINK);
854        break;
855    default:
856        break;
857    }
858
859    IOProfile *profile = getInputProfile(device,
860                                         samplingRate,
861                                         format,
862                                         channelMask);
863    if (profile == NULL) {
864        ALOGW("getInput() could not find profile for device %04x, samplingRate %d, format %d,"
865                "channelMask %04x",
866                device, samplingRate, format, channelMask);
867        return 0;
868    }
869
870    if (profile->mModule->mHandle == 0) {
871        ALOGE("getInput(): HW module %s not opened", profile->mModule->mName);
872        return 0;
873    }
874
875    AudioInputDescriptor *inputDesc = new AudioInputDescriptor(profile);
876
877    inputDesc->mInputSource = inputSource;
878    inputDesc->mDevice = device;
879    inputDesc->mSamplingRate = samplingRate;
880    inputDesc->mFormat = (audio_format_t)format;
881    inputDesc->mChannelMask = (audio_channel_mask_t)channelMask;
882    inputDesc->mRefCount = 0;
883    input = mpClientInterface->openInput(profile->mModule->mHandle,
884                                    &inputDesc->mDevice,
885                                    &inputDesc->mSamplingRate,
886                                    &inputDesc->mFormat,
887                                    &inputDesc->mChannelMask);
888
889    // only accept input with the exact requested set of parameters
890    if (input == 0 ||
891        (samplingRate != inputDesc->mSamplingRate) ||
892        (format != inputDesc->mFormat) ||
893        (channelMask != inputDesc->mChannelMask)) {
894        ALOGV("getInput() failed opening input: samplingRate %d, format %d, channelMask %d",
895                samplingRate, format, channelMask);
896        if (input != 0) {
897            mpClientInterface->closeInput(input);
898        }
899        delete inputDesc;
900        return 0;
901    }
902    mInputs.add(input, inputDesc);
903    return input;
904}
905
906status_t AudioPolicyManagerBase::startInput(audio_io_handle_t input)
907{
908    ALOGV("startInput() input %d", input);
909    ssize_t index = mInputs.indexOfKey(input);
910    if (index < 0) {
911        ALOGW("startInput() unknow input %d", input);
912        return BAD_VALUE;
913    }
914    AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
915
916#ifdef AUDIO_POLICY_TEST
917    if (mTestInput == 0)
918#endif //AUDIO_POLICY_TEST
919    {
920        // refuse 2 active AudioRecord clients at the same time
921        if (getActiveInput() != 0) {
922            ALOGW("startInput() input %d failed: other input already started", input);
923            return INVALID_OPERATION;
924        }
925    }
926
927    AudioParameter param = AudioParameter();
928    param.addInt(String8(AudioParameter::keyRouting), (int)inputDesc->mDevice);
929
930    param.addInt(String8(AudioParameter::keyInputSource), (int)inputDesc->mInputSource);
931    ALOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource);
932
933    mpClientInterface->setParameters(input, param.toString());
934
935    inputDesc->mRefCount = 1;
936    return NO_ERROR;
937}
938
939status_t AudioPolicyManagerBase::stopInput(audio_io_handle_t input)
940{
941    ALOGV("stopInput() input %d", input);
942    ssize_t index = mInputs.indexOfKey(input);
943    if (index < 0) {
944        ALOGW("stopInput() unknow input %d", input);
945        return BAD_VALUE;
946    }
947    AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
948
949    if (inputDesc->mRefCount == 0) {
950        ALOGW("stopInput() input %d already stopped", input);
951        return INVALID_OPERATION;
952    } else {
953        AudioParameter param = AudioParameter();
954        param.addInt(String8(AudioParameter::keyRouting), 0);
955        mpClientInterface->setParameters(input, param.toString());
956        inputDesc->mRefCount = 0;
957        return NO_ERROR;
958    }
959}
960
961void AudioPolicyManagerBase::releaseInput(audio_io_handle_t input)
962{
963    ALOGV("releaseInput() %d", input);
964    ssize_t index = mInputs.indexOfKey(input);
965    if (index < 0) {
966        ALOGW("releaseInput() releasing unknown input %d", input);
967        return;
968    }
969    mpClientInterface->closeInput(input);
970    delete mInputs.valueAt(index);
971    mInputs.removeItem(input);
972    ALOGV("releaseInput() exit");
973}
974
975void AudioPolicyManagerBase::initStreamVolume(AudioSystem::stream_type stream,
976                                            int indexMin,
977                                            int indexMax)
978{
979    ALOGV("initStreamVolume() stream %d, min %d, max %d", stream , indexMin, indexMax);
980    if (indexMin < 0 || indexMin >= indexMax) {
981        ALOGW("initStreamVolume() invalid index limits for stream %d, min %d, max %d", stream , indexMin, indexMax);
982        return;
983    }
984    mStreams[stream].mIndexMin = indexMin;
985    mStreams[stream].mIndexMax = indexMax;
986}
987
988status_t AudioPolicyManagerBase::setStreamVolumeIndex(AudioSystem::stream_type stream,
989                                                      int index,
990                                                      audio_devices_t device)
991{
992
993    if ((index < mStreams[stream].mIndexMin) || (index > mStreams[stream].mIndexMax)) {
994        return BAD_VALUE;
995    }
996    if (!audio_is_output_device(device)) {
997        return BAD_VALUE;
998    }
999
1000    // Force max volume if stream cannot be muted
1001    if (!mStreams[stream].mCanBeMuted) index = mStreams[stream].mIndexMax;
1002
1003    ALOGV("setStreamVolumeIndex() stream %d, device %04x, index %d",
1004          stream, device, index);
1005
1006    // if device is AUDIO_DEVICE_OUT_DEFAULT set default value and
1007    // clear all device specific values
1008    if (device == AUDIO_DEVICE_OUT_DEFAULT) {
1009        mStreams[stream].mIndexCur.clear();
1010    }
1011    mStreams[stream].mIndexCur.add(device, index);
1012
1013    // compute and apply stream volume on all outputs according to connected device
1014    status_t status = NO_ERROR;
1015    for (size_t i = 0; i < mOutputs.size(); i++) {
1016        audio_devices_t curDevice =
1017                getDeviceForVolume(mOutputs.valueAt(i)->device());
1018        if (device == curDevice) {
1019            status_t volStatus = checkAndSetVolume(stream, index, mOutputs.keyAt(i), curDevice);
1020            if (volStatus != NO_ERROR) {
1021                status = volStatus;
1022            }
1023        }
1024    }
1025    return status;
1026}
1027
1028status_t AudioPolicyManagerBase::getStreamVolumeIndex(AudioSystem::stream_type stream,
1029                                                      int *index,
1030                                                      audio_devices_t device)
1031{
1032    if (index == NULL) {
1033        return BAD_VALUE;
1034    }
1035    if (!audio_is_output_device(device)) {
1036        return BAD_VALUE;
1037    }
1038    // if device is AUDIO_DEVICE_OUT_DEFAULT, return volume for device corresponding to
1039    // the strategy the stream belongs to.
1040    if (device == AUDIO_DEVICE_OUT_DEFAULT) {
1041        device = getDeviceForStrategy(getStrategy(stream), true /*fromCache*/);
1042    }
1043    device = getDeviceForVolume(device);
1044
1045    *index =  mStreams[stream].getVolumeIndex(device);
1046    ALOGV("getStreamVolumeIndex() stream %d device %08x index %d", stream, device, *index);
1047    return NO_ERROR;
1048}
1049
1050audio_io_handle_t AudioPolicyManagerBase::getOutputForEffect(const effect_descriptor_t *desc)
1051{
1052    ALOGV("getOutputForEffect()");
1053    // apply simple rule where global effects are attached to the same output as MUSIC streams
1054
1055    routing_strategy strategy = getStrategy(AudioSystem::MUSIC);
1056    audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/);
1057    SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(device, mOutputs);
1058    int outIdx = 0;
1059    for (size_t i = 0; i < dstOutputs.size(); i++) {
1060        AudioOutputDescriptor *desc = mOutputs.valueFor(dstOutputs[i]);
1061        if (desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) {
1062            outIdx = i;
1063        }
1064    }
1065    return dstOutputs[outIdx];
1066}
1067
1068status_t AudioPolicyManagerBase::registerEffect(const effect_descriptor_t *desc,
1069                                audio_io_handle_t io,
1070                                uint32_t strategy,
1071                                int session,
1072                                int id)
1073{
1074    ssize_t index = mOutputs.indexOfKey(io);
1075    if (index < 0) {
1076        index = mInputs.indexOfKey(io);
1077        if (index < 0) {
1078            ALOGW("registerEffect() unknown io %d", io);
1079            return INVALID_OPERATION;
1080        }
1081    }
1082
1083    if (mTotalEffectsMemory + desc->memoryUsage > getMaxEffectsMemory()) {
1084        ALOGW("registerEffect() memory limit exceeded for Fx %s, Memory %d KB",
1085                desc->name, desc->memoryUsage);
1086        return INVALID_OPERATION;
1087    }
1088    mTotalEffectsMemory += desc->memoryUsage;
1089    ALOGV("registerEffect() effect %s, io %d, strategy %d session %d id %d",
1090            desc->name, io, strategy, session, id);
1091    ALOGV("registerEffect() memory %d, total memory %d", desc->memoryUsage, mTotalEffectsMemory);
1092
1093    EffectDescriptor *pDesc = new EffectDescriptor();
1094    memcpy (&pDesc->mDesc, desc, sizeof(effect_descriptor_t));
1095    pDesc->mIo = io;
1096    pDesc->mStrategy = (routing_strategy)strategy;
1097    pDesc->mSession = session;
1098    pDesc->mEnabled = false;
1099
1100    mEffects.add(id, pDesc);
1101
1102    return NO_ERROR;
1103}
1104
1105status_t AudioPolicyManagerBase::unregisterEffect(int id)
1106{
1107    ssize_t index = mEffects.indexOfKey(id);
1108    if (index < 0) {
1109        ALOGW("unregisterEffect() unknown effect ID %d", id);
1110        return INVALID_OPERATION;
1111    }
1112
1113    EffectDescriptor *pDesc = mEffects.valueAt(index);
1114
1115    setEffectEnabled(pDesc, false);
1116
1117    if (mTotalEffectsMemory < pDesc->mDesc.memoryUsage) {
1118        ALOGW("unregisterEffect() memory %d too big for total %d",
1119                pDesc->mDesc.memoryUsage, mTotalEffectsMemory);
1120        pDesc->mDesc.memoryUsage = mTotalEffectsMemory;
1121    }
1122    mTotalEffectsMemory -= pDesc->mDesc.memoryUsage;
1123    ALOGV("unregisterEffect() effect %s, ID %d, memory %d total memory %d",
1124            pDesc->mDesc.name, id, pDesc->mDesc.memoryUsage, mTotalEffectsMemory);
1125
1126    mEffects.removeItem(id);
1127    delete pDesc;
1128
1129    return NO_ERROR;
1130}
1131
1132status_t AudioPolicyManagerBase::setEffectEnabled(int id, bool enabled)
1133{
1134    ssize_t index = mEffects.indexOfKey(id);
1135    if (index < 0) {
1136        ALOGW("unregisterEffect() unknown effect ID %d", id);
1137        return INVALID_OPERATION;
1138    }
1139
1140    return setEffectEnabled(mEffects.valueAt(index), enabled);
1141}
1142
1143status_t AudioPolicyManagerBase::setEffectEnabled(EffectDescriptor *pDesc, bool enabled)
1144{
1145    if (enabled == pDesc->mEnabled) {
1146        ALOGV("setEffectEnabled(%s) effect already %s",
1147             enabled?"true":"false", enabled?"enabled":"disabled");
1148        return INVALID_OPERATION;
1149    }
1150
1151    if (enabled) {
1152        if (mTotalEffectsCpuLoad + pDesc->mDesc.cpuLoad > getMaxEffectsCpuLoad()) {
1153            ALOGW("setEffectEnabled(true) CPU Load limit exceeded for Fx %s, CPU %f MIPS",
1154                 pDesc->mDesc.name, (float)pDesc->mDesc.cpuLoad/10);
1155            return INVALID_OPERATION;
1156        }
1157        mTotalEffectsCpuLoad += pDesc->mDesc.cpuLoad;
1158        ALOGV("setEffectEnabled(true) total CPU %d", mTotalEffectsCpuLoad);
1159    } else {
1160        if (mTotalEffectsCpuLoad < pDesc->mDesc.cpuLoad) {
1161            ALOGW("setEffectEnabled(false) CPU load %d too high for total %d",
1162                    pDesc->mDesc.cpuLoad, mTotalEffectsCpuLoad);
1163            pDesc->mDesc.cpuLoad = mTotalEffectsCpuLoad;
1164        }
1165        mTotalEffectsCpuLoad -= pDesc->mDesc.cpuLoad;
1166        ALOGV("setEffectEnabled(false) total CPU %d", mTotalEffectsCpuLoad);
1167    }
1168    pDesc->mEnabled = enabled;
1169    return NO_ERROR;
1170}
1171
1172bool AudioPolicyManagerBase::isStreamActive(int stream, uint32_t inPastMs) const
1173{
1174    nsecs_t sysTime = systemTime();
1175    for (size_t i = 0; i < mOutputs.size(); i++) {
1176        if (mOutputs.valueAt(i)->mRefCount[stream] != 0 ||
1177            ns2ms(sysTime - mOutputs.valueAt(i)->mStopTime[stream]) < inPastMs) {
1178            return true;
1179        }
1180    }
1181    return false;
1182}
1183
1184bool AudioPolicyManagerBase::isStreamActiveRemotely(int stream, uint32_t inPastMs) const
1185{
1186    nsecs_t sysTime = systemTime();
1187    for (size_t i = 0; i < mOutputs.size(); i++) {
1188        const AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
1189        if ((outputDesc->mRefCount[stream] != 0 ||
1190                ns2ms(sysTime - outputDesc->mStopTime[stream]) < inPastMs)
1191             && ((outputDesc->device() & APM_AUDIO_OUT_DEVICE_REMOTE_ALL) != 0) ) {
1192            return true;
1193        }
1194    }
1195    return false;
1196}
1197
1198bool AudioPolicyManagerBase::isSourceActive(audio_source_t source) const
1199{
1200    for (size_t i = 0; i < mInputs.size(); i++) {
1201        const AudioInputDescriptor * inputDescriptor = mInputs.valueAt(i);
1202        if ((inputDescriptor->mInputSource == (int) source)
1203                && (inputDescriptor->mRefCount > 0)) {
1204            return true;
1205        }
1206    }
1207    return false;
1208}
1209
1210
1211
1212status_t AudioPolicyManagerBase::dump(int fd)
1213{
1214    const size_t SIZE = 256;
1215    char buffer[SIZE];
1216    String8 result;
1217
1218    snprintf(buffer, SIZE, "\nAudioPolicyManager Dump: %p\n", this);
1219    result.append(buffer);
1220
1221    snprintf(buffer, SIZE, " Primary Output: %d\n", mPrimaryOutput);
1222    result.append(buffer);
1223    snprintf(buffer, SIZE, " A2DP device address: %s\n", mA2dpDeviceAddress.string());
1224    result.append(buffer);
1225    snprintf(buffer, SIZE, " SCO device address: %s\n", mScoDeviceAddress.string());
1226    result.append(buffer);
1227    snprintf(buffer, SIZE, " USB audio ALSA %s\n", mUsbCardAndDevice.string());
1228    result.append(buffer);
1229    snprintf(buffer, SIZE, " Output devices: %08x\n", mAvailableOutputDevices);
1230    result.append(buffer);
1231    snprintf(buffer, SIZE, " Input devices: %08x\n", mAvailableInputDevices);
1232    result.append(buffer);
1233    snprintf(buffer, SIZE, " Phone state: %d\n", mPhoneState);
1234    result.append(buffer);
1235    snprintf(buffer, SIZE, " Force use for communications %d\n", mForceUse[AudioSystem::FOR_COMMUNICATION]);
1236    result.append(buffer);
1237    snprintf(buffer, SIZE, " Force use for media %d\n", mForceUse[AudioSystem::FOR_MEDIA]);
1238    result.append(buffer);
1239    snprintf(buffer, SIZE, " Force use for record %d\n", mForceUse[AudioSystem::FOR_RECORD]);
1240    result.append(buffer);
1241    snprintf(buffer, SIZE, " Force use for dock %d\n", mForceUse[AudioSystem::FOR_DOCK]);
1242    result.append(buffer);
1243    snprintf(buffer, SIZE, " Force use for system %d\n", mForceUse[AudioSystem::FOR_SYSTEM]);
1244    result.append(buffer);
1245    write(fd, result.string(), result.size());
1246
1247
1248    snprintf(buffer, SIZE, "\nHW Modules dump:\n");
1249    write(fd, buffer, strlen(buffer));
1250    for (size_t i = 0; i < mHwModules.size(); i++) {
1251        snprintf(buffer, SIZE, "- HW Module %d:\n", i + 1);
1252        write(fd, buffer, strlen(buffer));
1253        mHwModules[i]->dump(fd);
1254    }
1255
1256    snprintf(buffer, SIZE, "\nOutputs dump:\n");
1257    write(fd, buffer, strlen(buffer));
1258    for (size_t i = 0; i < mOutputs.size(); i++) {
1259        snprintf(buffer, SIZE, "- Output %d dump:\n", mOutputs.keyAt(i));
1260        write(fd, buffer, strlen(buffer));
1261        mOutputs.valueAt(i)->dump(fd);
1262    }
1263
1264    snprintf(buffer, SIZE, "\nInputs dump:\n");
1265    write(fd, buffer, strlen(buffer));
1266    for (size_t i = 0; i < mInputs.size(); i++) {
1267        snprintf(buffer, SIZE, "- Input %d dump:\n", mInputs.keyAt(i));
1268        write(fd, buffer, strlen(buffer));
1269        mInputs.valueAt(i)->dump(fd);
1270    }
1271
1272    snprintf(buffer, SIZE, "\nStreams dump:\n");
1273    write(fd, buffer, strlen(buffer));
1274    snprintf(buffer, SIZE,
1275             " Stream  Can be muted  Index Min  Index Max  Index Cur [device : index]...\n");
1276    write(fd, buffer, strlen(buffer));
1277    for (size_t i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
1278        snprintf(buffer, SIZE, " %02d      ", i);
1279        write(fd, buffer, strlen(buffer));
1280        mStreams[i].dump(fd);
1281    }
1282
1283    snprintf(buffer, SIZE, "\nTotal Effects CPU: %f MIPS, Total Effects memory: %d KB\n",
1284            (float)mTotalEffectsCpuLoad/10, mTotalEffectsMemory);
1285    write(fd, buffer, strlen(buffer));
1286
1287    snprintf(buffer, SIZE, "Registered effects:\n");
1288    write(fd, buffer, strlen(buffer));
1289    for (size_t i = 0; i < mEffects.size(); i++) {
1290        snprintf(buffer, SIZE, "- Effect %d dump:\n", mEffects.keyAt(i));
1291        write(fd, buffer, strlen(buffer));
1292        mEffects.valueAt(i)->dump(fd);
1293    }
1294
1295
1296    return NO_ERROR;
1297}
1298
1299// ----------------------------------------------------------------------------
1300// AudioPolicyManagerBase
1301// ----------------------------------------------------------------------------
1302
1303AudioPolicyManagerBase::AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface)
1304    :
1305#ifdef AUDIO_POLICY_TEST
1306    Thread(false),
1307#endif //AUDIO_POLICY_TEST
1308    mPrimaryOutput((audio_io_handle_t)0),
1309    mAvailableOutputDevices(AUDIO_DEVICE_NONE),
1310    mPhoneState(AudioSystem::MODE_NORMAL),
1311    mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f),
1312    mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0),
1313    mA2dpSuspended(false), mHasA2dp(false), mHasUsb(false), mHasRemoteSubmix(false)
1314{
1315    mpClientInterface = clientInterface;
1316
1317    for (int i = 0; i < AudioSystem::NUM_FORCE_USE; i++) {
1318        mForceUse[i] = AudioSystem::FORCE_NONE;
1319    }
1320
1321    initializeVolumeCurves();
1322
1323    mA2dpDeviceAddress = String8("");
1324    mScoDeviceAddress = String8("");
1325    mUsbCardAndDevice = String8("");
1326
1327    if (loadAudioPolicyConfig(AUDIO_POLICY_VENDOR_CONFIG_FILE) != NO_ERROR) {
1328        if (loadAudioPolicyConfig(AUDIO_POLICY_CONFIG_FILE) != NO_ERROR) {
1329            ALOGE("could not load audio policy configuration file, setting defaults");
1330            defaultAudioPolicyConfig();
1331        }
1332    }
1333
1334    // open all output streams needed to access attached devices
1335    for (size_t i = 0; i < mHwModules.size(); i++) {
1336        mHwModules[i]->mHandle = mpClientInterface->loadHwModule(mHwModules[i]->mName);
1337        if (mHwModules[i]->mHandle == 0) {
1338            ALOGW("could not open HW module %s", mHwModules[i]->mName);
1339            continue;
1340        }
1341        // open all output streams needed to access attached devices
1342        for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
1343        {
1344            const IOProfile *outProfile = mHwModules[i]->mOutputProfiles[j];
1345
1346            if (outProfile->mSupportedDevices & mAttachedOutputDevices) {
1347                AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(outProfile);
1348                outputDesc->mDevice = (audio_devices_t)(mDefaultOutputDevice &
1349                                                            outProfile->mSupportedDevices);
1350                audio_io_handle_t output = mpClientInterface->openOutput(
1351                                                outProfile->mModule->mHandle,
1352                                                &outputDesc->mDevice,
1353                                                &outputDesc->mSamplingRate,
1354                                                &outputDesc->mFormat,
1355                                                &outputDesc->mChannelMask,
1356                                                &outputDesc->mLatency,
1357                                                outputDesc->mFlags);
1358                if (output == 0) {
1359                    delete outputDesc;
1360                } else {
1361                    mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices |
1362                                            (outProfile->mSupportedDevices & mAttachedOutputDevices));
1363                    if (mPrimaryOutput == 0 &&
1364                            outProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) {
1365                        mPrimaryOutput = output;
1366                    }
1367                    addOutput(output, outputDesc);
1368                    setOutputDevice(output,
1369                                    (audio_devices_t)(mDefaultOutputDevice &
1370                                                        outProfile->mSupportedDevices),
1371                                    true);
1372                }
1373            }
1374        }
1375    }
1376
1377    ALOGE_IF((mAttachedOutputDevices & ~mAvailableOutputDevices),
1378             "Not output found for attached devices %08x",
1379             (mAttachedOutputDevices & ~mAvailableOutputDevices));
1380
1381    ALOGE_IF((mPrimaryOutput == 0), "Failed to open primary output");
1382
1383    updateDevicesAndOutputs();
1384
1385#ifdef AUDIO_POLICY_TEST
1386    if (mPrimaryOutput != 0) {
1387        AudioParameter outputCmd = AudioParameter();
1388        outputCmd.addInt(String8("set_id"), 0);
1389        mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString());
1390
1391        mTestDevice = AUDIO_DEVICE_OUT_SPEAKER;
1392        mTestSamplingRate = 44100;
1393        mTestFormat = AudioSystem::PCM_16_BIT;
1394        mTestChannels =  AudioSystem::CHANNEL_OUT_STEREO;
1395        mTestLatencyMs = 0;
1396        mCurOutput = 0;
1397        mDirectOutput = false;
1398        for (int i = 0; i < NUM_TEST_OUTPUTS; i++) {
1399            mTestOutputs[i] = 0;
1400        }
1401
1402        const size_t SIZE = 256;
1403        char buffer[SIZE];
1404        snprintf(buffer, SIZE, "AudioPolicyManagerTest");
1405        run(buffer, ANDROID_PRIORITY_AUDIO);
1406    }
1407#endif //AUDIO_POLICY_TEST
1408}
1409
1410AudioPolicyManagerBase::~AudioPolicyManagerBase()
1411{
1412#ifdef AUDIO_POLICY_TEST
1413    exit();
1414#endif //AUDIO_POLICY_TEST
1415   for (size_t i = 0; i < mOutputs.size(); i++) {
1416        mpClientInterface->closeOutput(mOutputs.keyAt(i));
1417        delete mOutputs.valueAt(i);
1418   }
1419   for (size_t i = 0; i < mInputs.size(); i++) {
1420        mpClientInterface->closeInput(mInputs.keyAt(i));
1421        delete mInputs.valueAt(i);
1422   }
1423   for (size_t i = 0; i < mHwModules.size(); i++) {
1424        delete mHwModules[i];
1425   }
1426}
1427
1428status_t AudioPolicyManagerBase::initCheck()
1429{
1430    return (mPrimaryOutput == 0) ? NO_INIT : NO_ERROR;
1431}
1432
1433#ifdef AUDIO_POLICY_TEST
1434bool AudioPolicyManagerBase::threadLoop()
1435{
1436    ALOGV("entering threadLoop()");
1437    while (!exitPending())
1438    {
1439        String8 command;
1440        int valueInt;
1441        String8 value;
1442
1443        Mutex::Autolock _l(mLock);
1444        mWaitWorkCV.waitRelative(mLock, milliseconds(50));
1445
1446        command = mpClientInterface->getParameters(0, String8("test_cmd_policy"));
1447        AudioParameter param = AudioParameter(command);
1448
1449        if (param.getInt(String8("test_cmd_policy"), valueInt) == NO_ERROR &&
1450            valueInt != 0) {
1451            ALOGV("Test command %s received", command.string());
1452            String8 target;
1453            if (param.get(String8("target"), target) != NO_ERROR) {
1454                target = "Manager";
1455            }
1456            if (param.getInt(String8("test_cmd_policy_output"), valueInt) == NO_ERROR) {
1457                param.remove(String8("test_cmd_policy_output"));
1458                mCurOutput = valueInt;
1459            }
1460            if (param.get(String8("test_cmd_policy_direct"), value) == NO_ERROR) {
1461                param.remove(String8("test_cmd_policy_direct"));
1462                if (value == "false") {
1463                    mDirectOutput = false;
1464                } else if (value == "true") {
1465                    mDirectOutput = true;
1466                }
1467            }
1468            if (param.getInt(String8("test_cmd_policy_input"), valueInt) == NO_ERROR) {
1469                param.remove(String8("test_cmd_policy_input"));
1470                mTestInput = valueInt;
1471            }
1472
1473            if (param.get(String8("test_cmd_policy_format"), value) == NO_ERROR) {
1474                param.remove(String8("test_cmd_policy_format"));
1475                int format = AudioSystem::INVALID_FORMAT;
1476                if (value == "PCM 16 bits") {
1477                    format = AudioSystem::PCM_16_BIT;
1478                } else if (value == "PCM 8 bits") {
1479                    format = AudioSystem::PCM_8_BIT;
1480                } else if (value == "Compressed MP3") {
1481                    format = AudioSystem::MP3;
1482                }
1483                if (format != AudioSystem::INVALID_FORMAT) {
1484                    if (target == "Manager") {
1485                        mTestFormat = format;
1486                    } else if (mTestOutputs[mCurOutput] != 0) {
1487                        AudioParameter outputParam = AudioParameter();
1488                        outputParam.addInt(String8("format"), format);
1489                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1490                    }
1491                }
1492            }
1493            if (param.get(String8("test_cmd_policy_channels"), value) == NO_ERROR) {
1494                param.remove(String8("test_cmd_policy_channels"));
1495                int channels = 0;
1496
1497                if (value == "Channels Stereo") {
1498                    channels =  AudioSystem::CHANNEL_OUT_STEREO;
1499                } else if (value == "Channels Mono") {
1500                    channels =  AudioSystem::CHANNEL_OUT_MONO;
1501                }
1502                if (channels != 0) {
1503                    if (target == "Manager") {
1504                        mTestChannels = channels;
1505                    } else if (mTestOutputs[mCurOutput] != 0) {
1506                        AudioParameter outputParam = AudioParameter();
1507                        outputParam.addInt(String8("channels"), channels);
1508                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1509                    }
1510                }
1511            }
1512            if (param.getInt(String8("test_cmd_policy_sampleRate"), valueInt) == NO_ERROR) {
1513                param.remove(String8("test_cmd_policy_sampleRate"));
1514                if (valueInt >= 0 && valueInt <= 96000) {
1515                    int samplingRate = valueInt;
1516                    if (target == "Manager") {
1517                        mTestSamplingRate = samplingRate;
1518                    } else if (mTestOutputs[mCurOutput] != 0) {
1519                        AudioParameter outputParam = AudioParameter();
1520                        outputParam.addInt(String8("sampling_rate"), samplingRate);
1521                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1522                    }
1523                }
1524            }
1525
1526            if (param.get(String8("test_cmd_policy_reopen"), value) == NO_ERROR) {
1527                param.remove(String8("test_cmd_policy_reopen"));
1528
1529                AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mPrimaryOutput);
1530                mpClientInterface->closeOutput(mPrimaryOutput);
1531
1532                audio_module_handle_t moduleHandle = outputDesc->mModule->mHandle;
1533
1534                delete mOutputs.valueFor(mPrimaryOutput);
1535                mOutputs.removeItem(mPrimaryOutput);
1536
1537                AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL);
1538                outputDesc->mDevice = AUDIO_DEVICE_OUT_SPEAKER;
1539                mPrimaryOutput = mpClientInterface->openOutput(moduleHandle,
1540                                                &outputDesc->mDevice,
1541                                                &outputDesc->mSamplingRate,
1542                                                &outputDesc->mFormat,
1543                                                &outputDesc->mChannelMask,
1544                                                &outputDesc->mLatency,
1545                                                outputDesc->mFlags);
1546                if (mPrimaryOutput == 0) {
1547                    ALOGE("Failed to reopen hardware output stream, samplingRate: %d, format %d, channels %d",
1548                            outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannelMask);
1549                } else {
1550                    AudioParameter outputCmd = AudioParameter();
1551                    outputCmd.addInt(String8("set_id"), 0);
1552                    mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString());
1553                    addOutput(mPrimaryOutput, outputDesc);
1554                }
1555            }
1556
1557
1558            mpClientInterface->setParameters(0, String8("test_cmd_policy="));
1559        }
1560    }
1561    return false;
1562}
1563
1564void AudioPolicyManagerBase::exit()
1565{
1566    {
1567        AutoMutex _l(mLock);
1568        requestExit();
1569        mWaitWorkCV.signal();
1570    }
1571    requestExitAndWait();
1572}
1573
1574int AudioPolicyManagerBase::testOutputIndex(audio_io_handle_t output)
1575{
1576    for (int i = 0; i < NUM_TEST_OUTPUTS; i++) {
1577        if (output == mTestOutputs[i]) return i;
1578    }
1579    return 0;
1580}
1581#endif //AUDIO_POLICY_TEST
1582
1583// ---
1584
1585void AudioPolicyManagerBase::addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc)
1586{
1587    outputDesc->mId = id;
1588    mOutputs.add(id, outputDesc);
1589}
1590
1591
1592status_t AudioPolicyManagerBase::checkOutputsForDevice(audio_devices_t device,
1593                                                       AudioSystem::device_connection_state state,
1594                                                       SortedVector<audio_io_handle_t>& outputs)
1595{
1596    AudioOutputDescriptor *desc;
1597
1598    if (state == AudioSystem::DEVICE_STATE_AVAILABLE) {
1599        // first list already open outputs that can be routed to this device
1600        for (size_t i = 0; i < mOutputs.size(); i++) {
1601            desc = mOutputs.valueAt(i);
1602            if (!desc->isDuplicated() && (desc->mProfile->mSupportedDevices & device)) {
1603                ALOGV("checkOutputsForDevice(): adding opened output %d", mOutputs.keyAt(i));
1604                outputs.add(mOutputs.keyAt(i));
1605            }
1606        }
1607        // then look for output profiles that can be routed to this device
1608        SortedVector<IOProfile *> profiles;
1609        for (size_t i = 0; i < mHwModules.size(); i++)
1610        {
1611            if (mHwModules[i]->mHandle == 0) {
1612                continue;
1613            }
1614            for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
1615            {
1616                if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices & device) {
1617                    ALOGV("checkOutputsForDevice(): adding profile %d from module %d", j, i);
1618                    profiles.add(mHwModules[i]->mOutputProfiles[j]);
1619                }
1620            }
1621        }
1622
1623        if (profiles.isEmpty() && outputs.isEmpty()) {
1624            ALOGW("checkOutputsForDevice(): No output available for device %04x", device);
1625            return BAD_VALUE;
1626        }
1627
1628        // open outputs for matching profiles if needed. Direct outputs are also opened to
1629        // query for dynamic parameters and will be closed later by setDeviceConnectionState()
1630        for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) {
1631            IOProfile *profile = profiles[profile_index];
1632
1633            // nothing to do if one output is already opened for this profile
1634            size_t j;
1635            for (j = 0; j < mOutputs.size(); j++) {
1636                desc = mOutputs.valueAt(j);
1637                if (!desc->isDuplicated() && desc->mProfile == profile) {
1638                    break;
1639                }
1640            }
1641            if (j != mOutputs.size()) {
1642                continue;
1643            }
1644
1645            ALOGV("opening output for device %08x", device);
1646            desc = new AudioOutputDescriptor(profile);
1647            desc->mDevice = device;
1648            audio_io_handle_t output = mpClientInterface->openOutput(profile->mModule->mHandle,
1649                                                                       &desc->mDevice,
1650                                                                       &desc->mSamplingRate,
1651                                                                       &desc->mFormat,
1652                                                                       &desc->mChannelMask,
1653                                                                       &desc->mLatency,
1654                                                                       desc->mFlags);
1655            if (output != 0) {
1656                if (desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) {
1657                    String8 reply;
1658                    char *value;
1659                    if (profile->mSamplingRates[0] == 0) {
1660                        reply = mpClientInterface->getParameters(output,
1661                                                String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES));
1662                        ALOGV("checkOutputsForDevice() direct output sup sampling rates %s",
1663                                  reply.string());
1664                        value = strpbrk((char *)reply.string(), "=");
1665                        if (value != NULL) {
1666                            loadSamplingRates(value + 1, profile);
1667                        }
1668                    }
1669                    if (profile->mFormats[0] == 0) {
1670                        reply = mpClientInterface->getParameters(output,
1671                                                       String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS));
1672                        ALOGV("checkOutputsForDevice() direct output sup formats %s",
1673                                  reply.string());
1674                        value = strpbrk((char *)reply.string(), "=");
1675                        if (value != NULL) {
1676                            loadFormats(value + 1, profile);
1677                        }
1678                    }
1679                    if (profile->mChannelMasks[0] == 0) {
1680                        reply = mpClientInterface->getParameters(output,
1681                                                      String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS));
1682                        ALOGV("checkOutputsForDevice() direct output sup channel masks %s",
1683                                  reply.string());
1684                        value = strpbrk((char *)reply.string(), "=");
1685                        if (value != NULL) {
1686                            loadOutChannels(value + 1, profile);
1687                        }
1688                    }
1689                    if (((profile->mSamplingRates[0] == 0) &&
1690                             (profile->mSamplingRates.size() < 2)) ||
1691                         ((profile->mFormats[0] == 0) &&
1692                             (profile->mFormats.size() < 2)) ||
1693                         ((profile->mFormats[0] == 0) &&
1694                             (profile->mChannelMasks.size() < 2))) {
1695                        ALOGW("checkOutputsForDevice() direct output missing param");
1696                        mpClientInterface->closeOutput(output);
1697                        output = 0;
1698                    } else {
1699                        addOutput(output, desc);
1700                    }
1701                } else {
1702                    audio_io_handle_t duplicatedOutput = 0;
1703                    // add output descriptor
1704                    addOutput(output, desc);
1705                    // set initial stream volume for device
1706                    applyStreamVolumes(output, device, 0, true);
1707
1708                    //TODO: configure audio effect output stage here
1709
1710                    // open a duplicating output thread for the new output and the primary output
1711                    duplicatedOutput = mpClientInterface->openDuplicateOutput(output,
1712                                                                              mPrimaryOutput);
1713                    if (duplicatedOutput != 0) {
1714                        // add duplicated output descriptor
1715                        AudioOutputDescriptor *dupOutputDesc = new AudioOutputDescriptor(NULL);
1716                        dupOutputDesc->mOutput1 = mOutputs.valueFor(mPrimaryOutput);
1717                        dupOutputDesc->mOutput2 = mOutputs.valueFor(output);
1718                        dupOutputDesc->mSamplingRate = desc->mSamplingRate;
1719                        dupOutputDesc->mFormat = desc->mFormat;
1720                        dupOutputDesc->mChannelMask = desc->mChannelMask;
1721                        dupOutputDesc->mLatency = desc->mLatency;
1722                        addOutput(duplicatedOutput, dupOutputDesc);
1723                        applyStreamVolumes(duplicatedOutput, device, 0, true);
1724                    } else {
1725                        ALOGW("checkOutputsForDevice() could not open dup output for %d and %d",
1726                                mPrimaryOutput, output);
1727                        mpClientInterface->closeOutput(output);
1728                        mOutputs.removeItem(output);
1729                        output = 0;
1730                    }
1731                }
1732            }
1733            if (output == 0) {
1734                ALOGW("checkOutputsForDevice() could not open output for device %x", device);
1735                delete desc;
1736                profiles.removeAt(profile_index);
1737                profile_index--;
1738            } else {
1739                outputs.add(output);
1740                ALOGV("checkOutputsForDevice(): adding output %d", output);
1741            }
1742        }
1743
1744        if (profiles.isEmpty()) {
1745            ALOGW("checkOutputsForDevice(): No output available for device %04x", device);
1746            return BAD_VALUE;
1747        }
1748    } else {
1749        // check if one opened output is not needed any more after disconnecting one device
1750        for (size_t i = 0; i < mOutputs.size(); i++) {
1751            desc = mOutputs.valueAt(i);
1752            if (!desc->isDuplicated() &&
1753                    !(desc->mProfile->mSupportedDevices & mAvailableOutputDevices)) {
1754                ALOGV("checkOutputsForDevice(): disconnecting adding output %d", mOutputs.keyAt(i));
1755                outputs.add(mOutputs.keyAt(i));
1756            }
1757        }
1758        for (size_t i = 0; i < mHwModules.size(); i++)
1759        {
1760            if (mHwModules[i]->mHandle == 0) {
1761                continue;
1762            }
1763            for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
1764            {
1765                IOProfile *profile = mHwModules[i]->mOutputProfiles[j];
1766                if ((profile->mSupportedDevices & device) &&
1767                        (profile->mFlags & AUDIO_OUTPUT_FLAG_DIRECT)) {
1768                    ALOGV("checkOutputsForDevice(): clearing direct output profile %d on module %d",
1769                          j, i);
1770                    if (profile->mSamplingRates[0] == 0) {
1771                        profile->mSamplingRates.clear();
1772                        profile->mSamplingRates.add(0);
1773                    }
1774                    if (profile->mFormats[0] == 0) {
1775                        profile->mFormats.clear();
1776                        profile->mFormats.add((audio_format_t)0);
1777                    }
1778                    if (profile->mChannelMasks[0] == 0) {
1779                        profile->mChannelMasks.clear();
1780                        profile->mChannelMasks.add((audio_channel_mask_t)0);
1781                    }
1782                }
1783            }
1784        }
1785    }
1786    return NO_ERROR;
1787}
1788
1789void AudioPolicyManagerBase::closeOutput(audio_io_handle_t output)
1790{
1791    ALOGV("closeOutput(%d)", output);
1792
1793    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
1794    if (outputDesc == NULL) {
1795        ALOGW("closeOutput() unknown output %d", output);
1796        return;
1797    }
1798
1799    // look for duplicated outputs connected to the output being removed.
1800    for (size_t i = 0; i < mOutputs.size(); i++) {
1801        AudioOutputDescriptor *dupOutputDesc = mOutputs.valueAt(i);
1802        if (dupOutputDesc->isDuplicated() &&
1803                (dupOutputDesc->mOutput1 == outputDesc ||
1804                dupOutputDesc->mOutput2 == outputDesc)) {
1805            AudioOutputDescriptor *outputDesc2;
1806            if (dupOutputDesc->mOutput1 == outputDesc) {
1807                outputDesc2 = dupOutputDesc->mOutput2;
1808            } else {
1809                outputDesc2 = dupOutputDesc->mOutput1;
1810            }
1811            // As all active tracks on duplicated output will be deleted,
1812            // and as they were also referenced on the other output, the reference
1813            // count for their stream type must be adjusted accordingly on
1814            // the other output.
1815            for (int j = 0; j < (int)AudioSystem::NUM_STREAM_TYPES; j++) {
1816                int refCount = dupOutputDesc->mRefCount[j];
1817                outputDesc2->changeRefCount((AudioSystem::stream_type)j,-refCount);
1818            }
1819            audio_io_handle_t duplicatedOutput = mOutputs.keyAt(i);
1820            ALOGV("closeOutput() closing also duplicated output %d", duplicatedOutput);
1821
1822            mpClientInterface->closeOutput(duplicatedOutput);
1823            delete mOutputs.valueFor(duplicatedOutput);
1824            mOutputs.removeItem(duplicatedOutput);
1825        }
1826    }
1827
1828    AudioParameter param;
1829    param.add(String8("closing"), String8("true"));
1830    mpClientInterface->setParameters(output, param.toString());
1831
1832    mpClientInterface->closeOutput(output);
1833    delete mOutputs.valueFor(output);
1834    mOutputs.removeItem(output);
1835}
1836
1837SortedVector<audio_io_handle_t> AudioPolicyManagerBase::getOutputsForDevice(audio_devices_t device,
1838                        DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> openOutputs)
1839{
1840    SortedVector<audio_io_handle_t> outputs;
1841
1842    ALOGVV("getOutputsForDevice() device %04x", device);
1843    for (size_t i = 0; i < openOutputs.size(); i++) {
1844        ALOGVV("output %d isDuplicated=%d device=%04x",
1845                i, openOutputs.valueAt(i)->isDuplicated(), openOutputs.valueAt(i)->supportedDevices());
1846        if ((device & openOutputs.valueAt(i)->supportedDevices()) == device) {
1847            ALOGVV("getOutputsForDevice() found output %d", openOutputs.keyAt(i));
1848            outputs.add(openOutputs.keyAt(i));
1849        }
1850    }
1851    return outputs;
1852}
1853
1854bool AudioPolicyManagerBase::vectorsEqual(SortedVector<audio_io_handle_t>& outputs1,
1855                                   SortedVector<audio_io_handle_t>& outputs2)
1856{
1857    if (outputs1.size() != outputs2.size()) {
1858        return false;
1859    }
1860    for (size_t i = 0; i < outputs1.size(); i++) {
1861        if (outputs1[i] != outputs2[i]) {
1862            return false;
1863        }
1864    }
1865    return true;
1866}
1867
1868void AudioPolicyManagerBase::checkOutputForStrategy(routing_strategy strategy)
1869{
1870    audio_devices_t oldDevice = getDeviceForStrategy(strategy, true /*fromCache*/);
1871    audio_devices_t newDevice = getDeviceForStrategy(strategy, false /*fromCache*/);
1872    SortedVector<audio_io_handle_t> srcOutputs = getOutputsForDevice(oldDevice, mPreviousOutputs);
1873    SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(newDevice, mOutputs);
1874
1875    if (!vectorsEqual(srcOutputs,dstOutputs)) {
1876        ALOGV("checkOutputForStrategy() strategy %d, moving from output %d to output %d",
1877              strategy, srcOutputs[0], dstOutputs[0]);
1878        // mute strategy while moving tracks from one output to another
1879        for (size_t i = 0; i < srcOutputs.size(); i++) {
1880            AudioOutputDescriptor *desc = mOutputs.valueFor(srcOutputs[i]);
1881            if (desc->strategyRefCount(strategy) != 0) {
1882                setStrategyMute(strategy, true, srcOutputs[i]);
1883                setStrategyMute(strategy, false, srcOutputs[i], MUTE_TIME_MS, newDevice);
1884            }
1885        }
1886
1887        // Move effects associated to this strategy from previous output to new output
1888        if (strategy == STRATEGY_MEDIA) {
1889            int outIdx = 0;
1890            for (size_t i = 0; i < dstOutputs.size(); i++) {
1891                AudioOutputDescriptor *desc = mOutputs.valueFor(dstOutputs[i]);
1892                if (desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) {
1893                    outIdx = i;
1894                }
1895            }
1896            SortedVector<audio_io_handle_t> moved;
1897            for (size_t i = 0; i < mEffects.size(); i++) {
1898                EffectDescriptor *desc = mEffects.valueAt(i);
1899                if (desc->mSession == AUDIO_SESSION_OUTPUT_MIX &&
1900                        desc->mIo != dstOutputs[outIdx]) {
1901                    if (moved.indexOf(desc->mIo) < 0) {
1902                        ALOGV("checkOutputForStrategy() moving effect %d to output %d",
1903                              mEffects.keyAt(i), dstOutputs[outIdx]);
1904                        mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, desc->mIo,
1905                                                       dstOutputs[outIdx]);
1906                        moved.add(desc->mIo);
1907                    }
1908                    desc->mIo = dstOutputs[outIdx];
1909                }
1910            }
1911        }
1912        // Move tracks associated to this strategy from previous output to new output
1913        for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
1914            if (getStrategy((AudioSystem::stream_type)i) == strategy) {
1915                //FIXME see fixme on name change
1916                mpClientInterface->setStreamOutput((AudioSystem::stream_type)i,
1917                                                   dstOutputs[0] /* ignored */);
1918            }
1919        }
1920    }
1921}
1922
1923void AudioPolicyManagerBase::checkOutputForAllStrategies()
1924{
1925    checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE);
1926    checkOutputForStrategy(STRATEGY_PHONE);
1927    checkOutputForStrategy(STRATEGY_SONIFICATION);
1928    checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL);
1929    checkOutputForStrategy(STRATEGY_MEDIA);
1930    checkOutputForStrategy(STRATEGY_DTMF);
1931}
1932
1933audio_io_handle_t AudioPolicyManagerBase::getA2dpOutput()
1934{
1935    if (!mHasA2dp) {
1936        return 0;
1937    }
1938
1939    for (size_t i = 0; i < mOutputs.size(); i++) {
1940        AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
1941        if (!outputDesc->isDuplicated() && outputDesc->device() & AUDIO_DEVICE_OUT_ALL_A2DP) {
1942            return mOutputs.keyAt(i);
1943        }
1944    }
1945
1946    return 0;
1947}
1948
1949void AudioPolicyManagerBase::checkA2dpSuspend()
1950{
1951    if (!mHasA2dp) {
1952        return;
1953    }
1954    audio_io_handle_t a2dpOutput = getA2dpOutput();
1955    if (a2dpOutput == 0) {
1956        return;
1957    }
1958
1959    // suspend A2DP output if:
1960    //      (NOT already suspended) &&
1961    //      ((SCO device is connected &&
1962    //       (forced usage for communication || for record is SCO))) ||
1963    //      (phone state is ringing || in call)
1964    //
1965    // restore A2DP output if:
1966    //      (Already suspended) &&
1967    //      ((SCO device is NOT connected ||
1968    //       (forced usage NOT for communication && NOT for record is SCO))) &&
1969    //      (phone state is NOT ringing && NOT in call)
1970    //
1971    if (mA2dpSuspended) {
1972        if (((mScoDeviceAddress == "") ||
1973             ((mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO) &&
1974              (mForceUse[AudioSystem::FOR_RECORD] != AudioSystem::FORCE_BT_SCO))) &&
1975             ((mPhoneState != AudioSystem::MODE_IN_CALL) &&
1976              (mPhoneState != AudioSystem::MODE_RINGTONE))) {
1977
1978            mpClientInterface->restoreOutput(a2dpOutput);
1979            mA2dpSuspended = false;
1980        }
1981    } else {
1982        if (((mScoDeviceAddress != "") &&
1983             ((mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) ||
1984              (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO))) ||
1985             ((mPhoneState == AudioSystem::MODE_IN_CALL) ||
1986              (mPhoneState == AudioSystem::MODE_RINGTONE))) {
1987
1988            mpClientInterface->suspendOutput(a2dpOutput);
1989            mA2dpSuspended = true;
1990        }
1991    }
1992}
1993
1994audio_devices_t AudioPolicyManagerBase::getNewDevice(audio_io_handle_t output, bool fromCache)
1995{
1996    audio_devices_t device = AUDIO_DEVICE_NONE;
1997
1998    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
1999    // check the following by order of priority to request a routing change if necessary:
2000    // 1: the strategy enforced audible is active on the output:
2001    //      use device for strategy enforced audible
2002    // 2: we are in call or the strategy phone is active on the output:
2003    //      use device for strategy phone
2004    // 3: the strategy sonification is active on the output:
2005    //      use device for strategy sonification
2006    // 4: the strategy "respectful" sonification is active on the output:
2007    //      use device for strategy "respectful" sonification
2008    // 5: the strategy media is active on the output:
2009    //      use device for strategy media
2010    // 6: the strategy DTMF is active on the output:
2011    //      use device for strategy DTMF
2012    if (outputDesc->isUsedByStrategy(STRATEGY_ENFORCED_AUDIBLE)) {
2013        device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache);
2014    } else if (isInCall() ||
2015                    outputDesc->isUsedByStrategy(STRATEGY_PHONE)) {
2016        device = getDeviceForStrategy(STRATEGY_PHONE, fromCache);
2017    } else if (outputDesc->isUsedByStrategy(STRATEGY_SONIFICATION)) {
2018        device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache);
2019    } else if (outputDesc->isUsedByStrategy(STRATEGY_SONIFICATION_RESPECTFUL)) {
2020        device = getDeviceForStrategy(STRATEGY_SONIFICATION_RESPECTFUL, fromCache);
2021    } else if (outputDesc->isUsedByStrategy(STRATEGY_MEDIA)) {
2022        device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache);
2023    } else if (outputDesc->isUsedByStrategy(STRATEGY_DTMF)) {
2024        device = getDeviceForStrategy(STRATEGY_DTMF, fromCache);
2025    }
2026
2027    ALOGV("getNewDevice() selected device %x", device);
2028    return device;
2029}
2030
2031uint32_t AudioPolicyManagerBase::getStrategyForStream(AudioSystem::stream_type stream) {
2032    return (uint32_t)getStrategy(stream);
2033}
2034
2035audio_devices_t AudioPolicyManagerBase::getDevicesForStream(AudioSystem::stream_type stream) {
2036    audio_devices_t devices;
2037    // By checking the range of stream before calling getStrategy, we avoid
2038    // getStrategy's behavior for invalid streams.  getStrategy would do a ALOGE
2039    // and then return STRATEGY_MEDIA, but we want to return the empty set.
2040    if (stream < (AudioSystem::stream_type) 0 || stream >= AudioSystem::NUM_STREAM_TYPES) {
2041        devices = AUDIO_DEVICE_NONE;
2042    } else {
2043        AudioPolicyManagerBase::routing_strategy strategy = getStrategy(stream);
2044        devices = getDeviceForStrategy(strategy, true /*fromCache*/);
2045    }
2046    return devices;
2047}
2048
2049AudioPolicyManagerBase::routing_strategy AudioPolicyManagerBase::getStrategy(
2050        AudioSystem::stream_type stream) {
2051    // stream to strategy mapping
2052    switch (stream) {
2053    case AudioSystem::VOICE_CALL:
2054    case AudioSystem::BLUETOOTH_SCO:
2055        return STRATEGY_PHONE;
2056    case AudioSystem::RING:
2057    case AudioSystem::ALARM:
2058        return STRATEGY_SONIFICATION;
2059    case AudioSystem::NOTIFICATION:
2060        return STRATEGY_SONIFICATION_RESPECTFUL;
2061    case AudioSystem::DTMF:
2062        return STRATEGY_DTMF;
2063    default:
2064        ALOGE("unknown stream type");
2065    case AudioSystem::SYSTEM:
2066        // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs
2067        // while key clicks are played produces a poor result
2068    case AudioSystem::TTS:
2069    case AudioSystem::MUSIC:
2070        return STRATEGY_MEDIA;
2071    case AudioSystem::ENFORCED_AUDIBLE:
2072        return STRATEGY_ENFORCED_AUDIBLE;
2073    }
2074}
2075
2076void AudioPolicyManagerBase::handleNotificationRoutingForStream(AudioSystem::stream_type stream) {
2077    switch(stream) {
2078    case AudioSystem::MUSIC:
2079        checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL);
2080        updateDevicesAndOutputs();
2081        break;
2082    default:
2083        break;
2084    }
2085}
2086
2087audio_devices_t AudioPolicyManagerBase::getDeviceForStrategy(routing_strategy strategy,
2088                                                             bool fromCache)
2089{
2090    uint32_t device = AUDIO_DEVICE_NONE;
2091
2092    if (fromCache) {
2093        ALOGVV("getDeviceForStrategy() from cache strategy %d, device %x",
2094              strategy, mDeviceForStrategy[strategy]);
2095        return mDeviceForStrategy[strategy];
2096    }
2097
2098    switch (strategy) {
2099
2100    case STRATEGY_SONIFICATION_RESPECTFUL:
2101        if (isInCall()) {
2102            device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
2103        } else if (isStreamActiveRemotely(AudioSystem::MUSIC,
2104                SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) {
2105            // while media is playing on a remote device, use the the sonification behavior.
2106            // Note that we test this usecase before testing if media is playing because
2107            //   the isStreamActive() method only informs about the activity of a stream, not
2108            //   if it's for local playback. Note also that we use the same delay between both tests
2109            device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
2110        } else if (isStreamActive(AudioSystem::MUSIC, SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) {
2111            // while media is playing (or has recently played), use the same device
2112            device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/);
2113        } else {
2114            // when media is not playing anymore, fall back on the sonification behavior
2115            device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
2116        }
2117
2118        break;
2119
2120    case STRATEGY_DTMF:
2121        if (!isInCall()) {
2122            // when off call, DTMF strategy follows the same rules as MEDIA strategy
2123            device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/);
2124            break;
2125        }
2126        // when in call, DTMF and PHONE strategies follow the same rules
2127        // FALL THROUGH
2128
2129    case STRATEGY_PHONE:
2130        // for phone strategy, we first consider the forced use and then the available devices by order
2131        // of priority
2132        switch (mForceUse[AudioSystem::FOR_COMMUNICATION]) {
2133        case AudioSystem::FORCE_BT_SCO:
2134            if (!isInCall() || strategy != STRATEGY_DTMF) {
2135                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
2136                if (device) break;
2137            }
2138            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
2139            if (device) break;
2140            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO;
2141            if (device) break;
2142            // if SCO device is requested but no SCO device is available, fall back to default case
2143            // FALL THROUGH
2144
2145        default:    // FORCE_NONE
2146            // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP
2147            if (mHasA2dp && !isInCall() &&
2148                    (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
2149                    (getA2dpOutput() != 0) && !mA2dpSuspended) {
2150                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
2151                if (device) break;
2152                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
2153                if (device) break;
2154            }
2155            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
2156            if (device) break;
2157            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADSET;
2158            if (device) break;
2159            if (mPhoneState != AudioSystem::MODE_IN_CALL) {
2160                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
2161                if (device) break;
2162                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
2163                if (device) break;
2164                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
2165                if (device) break;
2166                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
2167                if (device) break;
2168                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
2169                if (device) break;
2170            }
2171            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_EARPIECE;
2172            if (device) break;
2173            device = mDefaultOutputDevice;
2174            if (device == AUDIO_DEVICE_NONE) {
2175                ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE");
2176            }
2177            break;
2178
2179        case AudioSystem::FORCE_SPEAKER:
2180            // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to
2181            // A2DP speaker when forcing to speaker output
2182            if (mHasA2dp && !isInCall() &&
2183                    (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
2184                    (getA2dpOutput() != 0) && !mA2dpSuspended) {
2185                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
2186                if (device) break;
2187            }
2188            if (mPhoneState != AudioSystem::MODE_IN_CALL) {
2189                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
2190                if (device) break;
2191                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
2192                if (device) break;
2193                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
2194                if (device) break;
2195                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
2196                if (device) break;
2197                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
2198                if (device) break;
2199            }
2200            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
2201            if (device) break;
2202            device = mDefaultOutputDevice;
2203            if (device == AUDIO_DEVICE_NONE) {
2204                ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE, FORCE_SPEAKER");
2205            }
2206            break;
2207        }
2208    break;
2209
2210    case STRATEGY_SONIFICATION:
2211
2212        // If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by
2213        // handleIncallSonification().
2214        if (isInCall()) {
2215            device = getDeviceForStrategy(STRATEGY_PHONE, false /*fromCache*/);
2216            break;
2217        }
2218        // FALL THROUGH
2219
2220    case STRATEGY_ENFORCED_AUDIBLE:
2221        // strategy STRATEGY_ENFORCED_AUDIBLE uses same routing policy as STRATEGY_SONIFICATION
2222        // except:
2223        //   - when in call where it doesn't default to STRATEGY_PHONE behavior
2224        //   - in countries where not enforced in which case it follows STRATEGY_MEDIA
2225
2226        if ((strategy == STRATEGY_SONIFICATION) ||
2227                (mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_SYSTEM_ENFORCED)) {
2228            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
2229            if (device == AUDIO_DEVICE_NONE) {
2230                ALOGE("getDeviceForStrategy() speaker device not found for STRATEGY_SONIFICATION");
2231            }
2232        }
2233        // The second device used for sonification is the same as the device used by media strategy
2234        // FALL THROUGH
2235
2236    case STRATEGY_MEDIA: {
2237        uint32_t device2 = AUDIO_DEVICE_NONE;
2238        if (strategy != STRATEGY_SONIFICATION) {
2239            // no sonification on remote submix (e.g. WFD)
2240            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_REMOTE_SUBMIX;
2241        }
2242        if ((device2 == AUDIO_DEVICE_NONE) &&
2243                mHasA2dp && (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
2244                (getA2dpOutput() != 0) && !mA2dpSuspended) {
2245            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
2246            if (device2 == AUDIO_DEVICE_NONE) {
2247                device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
2248            }
2249            if (device2 == AUDIO_DEVICE_NONE) {
2250                device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
2251            }
2252        }
2253        if (device2 == AUDIO_DEVICE_NONE) {
2254            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
2255        }
2256        if (device2 == AUDIO_DEVICE_NONE) {
2257            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADSET;
2258        }
2259        if (device2 == AUDIO_DEVICE_NONE) {
2260            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
2261        }
2262        if (device2 == AUDIO_DEVICE_NONE) {
2263            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
2264        }
2265        if (device2 == AUDIO_DEVICE_NONE) {
2266            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
2267        }
2268        if ((device2 == AUDIO_DEVICE_NONE) && (strategy != STRATEGY_SONIFICATION)) {
2269            // no sonification on aux digital (e.g. HDMI)
2270            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
2271        }
2272        if ((device2 == AUDIO_DEVICE_NONE) &&
2273                (mForceUse[AudioSystem::FOR_DOCK] == AudioSystem::FORCE_ANALOG_DOCK)) {
2274            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
2275        }
2276        if (device2 == AUDIO_DEVICE_NONE) {
2277            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
2278        }
2279
2280        // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or
2281        // STRATEGY_ENFORCED_AUDIBLE, AUDIO_DEVICE_NONE otherwise
2282        device |= device2;
2283        if (device) break;
2284        device = mDefaultOutputDevice;
2285        if (device == AUDIO_DEVICE_NONE) {
2286            ALOGE("getDeviceForStrategy() no device found for STRATEGY_MEDIA");
2287        }
2288        } break;
2289
2290    default:
2291        ALOGW("getDeviceForStrategy() unknown strategy: %d", strategy);
2292        break;
2293    }
2294
2295    ALOGVV("getDeviceForStrategy() strategy %d, device %x", strategy, device);
2296    return device;
2297}
2298
2299void AudioPolicyManagerBase::updateDevicesAndOutputs()
2300{
2301    for (int i = 0; i < NUM_STRATEGIES; i++) {
2302        mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/);
2303    }
2304    mPreviousOutputs = mOutputs;
2305}
2306
2307uint32_t AudioPolicyManagerBase::checkDeviceMuteStrategies(AudioOutputDescriptor *outputDesc,
2308                                                       audio_devices_t prevDevice,
2309                                                       uint32_t delayMs)
2310{
2311    // mute/unmute strategies using an incompatible device combination
2312    // if muting, wait for the audio in pcm buffer to be drained before proceeding
2313    // if unmuting, unmute only after the specified delay
2314    if (outputDesc->isDuplicated()) {
2315        return 0;
2316    }
2317
2318    uint32_t muteWaitMs = 0;
2319    audio_devices_t device = outputDesc->device();
2320    bool shouldMute = (outputDesc->refCount() != 0) &&
2321                    (AudioSystem::popCount(device) >= 2);
2322    // temporary mute output if device selection changes to avoid volume bursts due to
2323    // different per device volumes
2324    bool tempMute = (outputDesc->refCount() != 0) && (device != prevDevice);
2325
2326    for (size_t i = 0; i < NUM_STRATEGIES; i++) {
2327        audio_devices_t curDevice = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/);
2328        bool mute = shouldMute && (curDevice & device) && (curDevice != device);
2329        bool doMute = false;
2330
2331        if (mute && !outputDesc->mStrategyMutedByDevice[i]) {
2332            doMute = true;
2333            outputDesc->mStrategyMutedByDevice[i] = true;
2334        } else if (!mute && outputDesc->mStrategyMutedByDevice[i]){
2335            doMute = true;
2336            outputDesc->mStrategyMutedByDevice[i] = false;
2337        }
2338        if (doMute || tempMute) {
2339            for (size_t j = 0; j < mOutputs.size(); j++) {
2340                AudioOutputDescriptor *desc = mOutputs.valueAt(j);
2341                // skip output if it does not share any device with current output
2342                if ((desc->supportedDevices() & outputDesc->supportedDevices())
2343                        == AUDIO_DEVICE_NONE) {
2344                    continue;
2345                }
2346                audio_io_handle_t curOutput = mOutputs.keyAt(j);
2347                ALOGVV("checkDeviceMuteStrategies() %s strategy %d (curDevice %04x) on output %d",
2348                      mute ? "muting" : "unmuting", i, curDevice, curOutput);
2349                setStrategyMute((routing_strategy)i, mute, curOutput, mute ? 0 : delayMs);
2350                if (desc->strategyRefCount((routing_strategy)i) != 0) {
2351                    // do tempMute only for current output
2352                    if (tempMute && (desc == outputDesc)) {
2353                        setStrategyMute((routing_strategy)i, true, curOutput);
2354                        setStrategyMute((routing_strategy)i, false, curOutput,
2355                                            desc->latency() * 2, device);
2356                    }
2357                    if ((tempMute && (desc == outputDesc)) || mute) {
2358                        if (muteWaitMs < desc->latency()) {
2359                            muteWaitMs = desc->latency();
2360                        }
2361                    }
2362                }
2363            }
2364        }
2365    }
2366
2367    // FIXME: should not need to double latency if volume could be applied immediately by the
2368    // audioflinger mixer. We must account for the delay between now and the next time
2369    // the audioflinger thread for this output will process a buffer (which corresponds to
2370    // one buffer size, usually 1/2 or 1/4 of the latency).
2371    muteWaitMs *= 2;
2372    // wait for the PCM output buffers to empty before proceeding with the rest of the command
2373    if (muteWaitMs > delayMs) {
2374        muteWaitMs -= delayMs;
2375        usleep(muteWaitMs * 1000);
2376        return muteWaitMs;
2377    }
2378    return 0;
2379}
2380
2381uint32_t AudioPolicyManagerBase::setOutputDevice(audio_io_handle_t output,
2382                                             audio_devices_t device,
2383                                             bool force,
2384                                             int delayMs)
2385{
2386    ALOGV("setOutputDevice() output %d device %04x delayMs %d", output, device, delayMs);
2387    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2388    AudioParameter param;
2389    uint32_t muteWaitMs;
2390
2391    if (outputDesc->isDuplicated()) {
2392        muteWaitMs = setOutputDevice(outputDesc->mOutput1->mId, device, force, delayMs);
2393        muteWaitMs += setOutputDevice(outputDesc->mOutput2->mId, device, force, delayMs);
2394        return muteWaitMs;
2395    }
2396    // no need to proceed if new device is not AUDIO_DEVICE_NONE and not supported by current
2397    // output profile
2398    if ((device != AUDIO_DEVICE_NONE) &&
2399            ((device & outputDesc->mProfile->mSupportedDevices) == 0)) {
2400        return 0;
2401    }
2402
2403    // filter devices according to output selected
2404    device = (audio_devices_t)(device & outputDesc->mProfile->mSupportedDevices);
2405
2406    audio_devices_t prevDevice = outputDesc->mDevice;
2407
2408    ALOGV("setOutputDevice() prevDevice %04x", prevDevice);
2409
2410    if (device != AUDIO_DEVICE_NONE) {
2411        outputDesc->mDevice = device;
2412    }
2413    muteWaitMs = checkDeviceMuteStrategies(outputDesc, prevDevice, delayMs);
2414
2415    // Do not change the routing if:
2416    //  - the requested device is AUDIO_DEVICE_NONE
2417    //  - the requested device is the same as current device and force is not specified.
2418    // Doing this check here allows the caller to call setOutputDevice() without conditions
2419    if ((device == AUDIO_DEVICE_NONE || device == prevDevice) && !force) {
2420        ALOGV("setOutputDevice() setting same device %04x or null device for output %d", device, output);
2421        return muteWaitMs;
2422    }
2423
2424    ALOGV("setOutputDevice() changing device");
2425    // do the routing
2426    param.addInt(String8(AudioParameter::keyRouting), (int)device);
2427    mpClientInterface->setParameters(output, param.toString(), delayMs);
2428
2429    // update stream volumes according to new device
2430    applyStreamVolumes(output, device, delayMs);
2431
2432    return muteWaitMs;
2433}
2434
2435AudioPolicyManagerBase::IOProfile *AudioPolicyManagerBase::getInputProfile(audio_devices_t device,
2436                                                   uint32_t samplingRate,
2437                                                   uint32_t format,
2438                                                   uint32_t channelMask)
2439{
2440    // Choose an input profile based on the requested capture parameters: select the first available
2441    // profile supporting all requested parameters.
2442
2443    for (size_t i = 0; i < mHwModules.size(); i++)
2444    {
2445        if (mHwModules[i]->mHandle == 0) {
2446            continue;
2447        }
2448        for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++)
2449        {
2450            IOProfile *profile = mHwModules[i]->mInputProfiles[j];
2451            if (profile->isCompatibleProfile(device, samplingRate, format,
2452                                             channelMask,(audio_output_flags_t)0)) {
2453                return profile;
2454            }
2455        }
2456    }
2457    return NULL;
2458}
2459
2460audio_devices_t AudioPolicyManagerBase::getDeviceForInputSource(int inputSource)
2461{
2462    uint32_t device = AUDIO_DEVICE_NONE;
2463
2464    switch(inputSource) {
2465    case AUDIO_SOURCE_DEFAULT:
2466    case AUDIO_SOURCE_MIC:
2467    case AUDIO_SOURCE_VOICE_RECOGNITION:
2468    case AUDIO_SOURCE_VOICE_COMMUNICATION:
2469        if (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO &&
2470            mAvailableInputDevices & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
2471            device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
2472        } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_WIRED_HEADSET) {
2473            device = AUDIO_DEVICE_IN_WIRED_HEADSET;
2474        } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
2475            device = AUDIO_DEVICE_IN_BUILTIN_MIC;
2476        }
2477        break;
2478    case AUDIO_SOURCE_CAMCORDER:
2479        if (mAvailableInputDevices & AUDIO_DEVICE_IN_BACK_MIC) {
2480            device = AUDIO_DEVICE_IN_BACK_MIC;
2481        } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
2482            device = AUDIO_DEVICE_IN_BUILTIN_MIC;
2483        }
2484        break;
2485    case AUDIO_SOURCE_VOICE_UPLINK:
2486    case AUDIO_SOURCE_VOICE_DOWNLINK:
2487    case AUDIO_SOURCE_VOICE_CALL:
2488        if (mAvailableInputDevices & AUDIO_DEVICE_IN_VOICE_CALL) {
2489            device = AUDIO_DEVICE_IN_VOICE_CALL;
2490        }
2491        break;
2492    case AUDIO_SOURCE_REMOTE_SUBMIX:
2493        if (mAvailableInputDevices & AUDIO_DEVICE_IN_REMOTE_SUBMIX) {
2494            device = AUDIO_DEVICE_IN_REMOTE_SUBMIX;
2495        }
2496        break;
2497    default:
2498        ALOGW("getDeviceForInputSource() invalid input source %d", inputSource);
2499        break;
2500    }
2501    ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device);
2502    return device;
2503}
2504
2505bool AudioPolicyManagerBase::isVirtualInputDevice(audio_devices_t device)
2506{
2507    if ((device & AUDIO_DEVICE_BIT_IN) != 0) {
2508        device &= ~AUDIO_DEVICE_BIT_IN;
2509        if ((popcount(device) == 1) && ((device & ~APM_AUDIO_IN_DEVICE_VIRTUAL_ALL) == 0))
2510            return true;
2511    }
2512    return false;
2513}
2514
2515audio_io_handle_t AudioPolicyManagerBase::getActiveInput(bool ignoreVirtualInputs)
2516{
2517    for (size_t i = 0; i < mInputs.size(); i++) {
2518        const AudioInputDescriptor * input_descriptor = mInputs.valueAt(i);
2519        if ((input_descriptor->mRefCount > 0)
2520                && (!ignoreVirtualInputs || !isVirtualInputDevice(input_descriptor->mDevice))) {
2521            return mInputs.keyAt(i);
2522        }
2523    }
2524    return 0;
2525}
2526
2527
2528audio_devices_t AudioPolicyManagerBase::getDeviceForVolume(audio_devices_t device)
2529{
2530    if (device == AUDIO_DEVICE_NONE) {
2531        // this happens when forcing a route update and no track is active on an output.
2532        // In this case the returned category is not important.
2533        device =  AUDIO_DEVICE_OUT_SPEAKER;
2534    } else if (AudioSystem::popCount(device) > 1) {
2535        // Multiple device selection is either:
2536        //  - speaker + one other device: give priority to speaker in this case.
2537        //  - one A2DP device + another device: happens with duplicated output. In this case
2538        // retain the device on the A2DP output as the other must not correspond to an active
2539        // selection if not the speaker.
2540        if (device & AUDIO_DEVICE_OUT_SPEAKER) {
2541            device = AUDIO_DEVICE_OUT_SPEAKER;
2542        } else {
2543            device = (audio_devices_t)(device & AUDIO_DEVICE_OUT_ALL_A2DP);
2544        }
2545    }
2546
2547    ALOGW_IF(AudioSystem::popCount(device) != 1,
2548            "getDeviceForVolume() invalid device combination: %08x",
2549            device);
2550
2551    return device;
2552}
2553
2554AudioPolicyManagerBase::device_category AudioPolicyManagerBase::getDeviceCategory(audio_devices_t device)
2555{
2556    switch(getDeviceForVolume(device)) {
2557        case AUDIO_DEVICE_OUT_EARPIECE:
2558            return DEVICE_CATEGORY_EARPIECE;
2559        case AUDIO_DEVICE_OUT_WIRED_HEADSET:
2560        case AUDIO_DEVICE_OUT_WIRED_HEADPHONE:
2561        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO:
2562        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET:
2563        case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP:
2564        case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES:
2565            return DEVICE_CATEGORY_HEADSET;
2566        case AUDIO_DEVICE_OUT_SPEAKER:
2567        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT:
2568        case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER:
2569        case AUDIO_DEVICE_OUT_AUX_DIGITAL:
2570        case AUDIO_DEVICE_OUT_USB_ACCESSORY:
2571        case AUDIO_DEVICE_OUT_USB_DEVICE:
2572        case AUDIO_DEVICE_OUT_REMOTE_SUBMIX:
2573        default:
2574            return DEVICE_CATEGORY_SPEAKER;
2575    }
2576}
2577
2578float AudioPolicyManagerBase::volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc,
2579        int indexInUi)
2580{
2581    device_category deviceCategory = getDeviceCategory(device);
2582    const VolumeCurvePoint *curve = streamDesc.mVolumeCurve[deviceCategory];
2583
2584    // the volume index in the UI is relative to the min and max volume indices for this stream type
2585    int nbSteps = 1 + curve[VOLMAX].mIndex -
2586            curve[VOLMIN].mIndex;
2587    int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) /
2588            (streamDesc.mIndexMax - streamDesc.mIndexMin);
2589
2590    // find what part of the curve this index volume belongs to, or if it's out of bounds
2591    int segment = 0;
2592    if (volIdx < curve[VOLMIN].mIndex) {         // out of bounds
2593        return 0.0f;
2594    } else if (volIdx < curve[VOLKNEE1].mIndex) {
2595        segment = 0;
2596    } else if (volIdx < curve[VOLKNEE2].mIndex) {
2597        segment = 1;
2598    } else if (volIdx <= curve[VOLMAX].mIndex) {
2599        segment = 2;
2600    } else {                                                               // out of bounds
2601        return 1.0f;
2602    }
2603
2604    // linear interpolation in the attenuation table in dB
2605    float decibels = curve[segment].mDBAttenuation +
2606            ((float)(volIdx - curve[segment].mIndex)) *
2607                ( (curve[segment+1].mDBAttenuation -
2608                        curve[segment].mDBAttenuation) /
2609                    ((float)(curve[segment+1].mIndex -
2610                            curve[segment].mIndex)) );
2611
2612    float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 )
2613
2614    ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f",
2615            curve[segment].mIndex, volIdx,
2616            curve[segment+1].mIndex,
2617            curve[segment].mDBAttenuation,
2618            decibels,
2619            curve[segment+1].mDBAttenuation,
2620            amplification);
2621
2622    return amplification;
2623}
2624
2625const AudioPolicyManagerBase::VolumeCurvePoint
2626    AudioPolicyManagerBase::sDefaultVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2627    {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f}
2628};
2629
2630const AudioPolicyManagerBase::VolumeCurvePoint
2631    AudioPolicyManagerBase::sDefaultMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2632    {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f}
2633};
2634
2635const AudioPolicyManagerBase::VolumeCurvePoint
2636    AudioPolicyManagerBase::sSpeakerMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2637    {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f}
2638};
2639
2640const AudioPolicyManagerBase::VolumeCurvePoint
2641    AudioPolicyManagerBase::sSpeakerSonificationVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2642    {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f}
2643};
2644
2645// AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks
2646// AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets (See AudioService.java).
2647// The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset.
2648const AudioPolicyManagerBase::VolumeCurvePoint
2649    AudioPolicyManagerBase::sDefaultSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2650    {1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f}
2651};
2652
2653const AudioPolicyManagerBase::VolumeCurvePoint
2654    AudioPolicyManagerBase::sHeadsetSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2655    {1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f}
2656};
2657
2658const AudioPolicyManagerBase::VolumeCurvePoint
2659    AudioPolicyManagerBase::sDefaultVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2660    {0, -42.0f}, {33, -28.0f}, {66, -14.0f}, {100, 0.0f}
2661};
2662
2663const AudioPolicyManagerBase::VolumeCurvePoint
2664    AudioPolicyManagerBase::sSpeakerVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2665    {0, -24.0f}, {33, -16.0f}, {66, -8.0f}, {100, 0.0f}
2666};
2667
2668const AudioPolicyManagerBase::VolumeCurvePoint
2669            *AudioPolicyManagerBase::sVolumeProfiles[AUDIO_STREAM_CNT]
2670                                                   [AudioPolicyManagerBase::DEVICE_CATEGORY_CNT] = {
2671    { // AUDIO_STREAM_VOICE_CALL
2672        sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
2673        sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2674        sDefaultVoiceVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2675    },
2676    { // AUDIO_STREAM_SYSTEM
2677        sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2678        sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2679        sDefaultSystemVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2680    },
2681    { // AUDIO_STREAM_RING
2682        sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2683        sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2684        sDefaultVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2685    },
2686    { // AUDIO_STREAM_MUSIC
2687        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
2688        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2689        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2690    },
2691    { // AUDIO_STREAM_ALARM
2692        sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2693        sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2694        sDefaultVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2695    },
2696    { // AUDIO_STREAM_NOTIFICATION
2697        sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2698        sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2699        sDefaultVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2700    },
2701    { // AUDIO_STREAM_BLUETOOTH_SCO
2702        sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
2703        sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2704        sDefaultVoiceVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2705    },
2706    { // AUDIO_STREAM_ENFORCED_AUDIBLE
2707        sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2708        sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2709        sDefaultSystemVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2710    },
2711    {  // AUDIO_STREAM_DTMF
2712        sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2713        sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2714        sDefaultSystemVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2715    },
2716    { // AUDIO_STREAM_TTS
2717        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
2718        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2719        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2720    },
2721};
2722
2723void AudioPolicyManagerBase::initializeVolumeCurves()
2724{
2725    for (int i = 0; i < AUDIO_STREAM_CNT; i++) {
2726        for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) {
2727            mStreams[i].mVolumeCurve[j] =
2728                    sVolumeProfiles[i][j];
2729        }
2730    }
2731}
2732
2733float AudioPolicyManagerBase::computeVolume(int stream,
2734                                            int index,
2735                                            audio_io_handle_t output,
2736                                            audio_devices_t device)
2737{
2738    float volume = 1.0;
2739    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2740    StreamDescriptor &streamDesc = mStreams[stream];
2741
2742    if (device == AUDIO_DEVICE_NONE) {
2743        device = outputDesc->device();
2744    }
2745
2746    // if volume is not 0 (not muted), force media volume to max on digital output
2747    if (stream == AudioSystem::MUSIC &&
2748        index != mStreams[stream].mIndexMin &&
2749        (device == AUDIO_DEVICE_OUT_AUX_DIGITAL ||
2750         device == AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET ||
2751         device == AUDIO_DEVICE_OUT_USB_ACCESSORY ||
2752         device == AUDIO_DEVICE_OUT_USB_DEVICE)) {
2753        return 1.0;
2754    }
2755
2756    volume = volIndexToAmpl(device, streamDesc, index);
2757
2758    // if a headset is connected, apply the following rules to ring tones and notifications
2759    // to avoid sound level bursts in user's ears:
2760    // - always attenuate ring tones and notifications volume by 6dB
2761    // - if music is playing, always limit the volume to current music volume,
2762    // with a minimum threshold at -36dB so that notification is always perceived.
2763    const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream);
2764    if ((device & (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP |
2765            AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
2766            AUDIO_DEVICE_OUT_WIRED_HEADSET |
2767            AUDIO_DEVICE_OUT_WIRED_HEADPHONE)) &&
2768        ((stream_strategy == STRATEGY_SONIFICATION)
2769                || (stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL)
2770                || (stream == AudioSystem::SYSTEM)
2771                || ((stream_strategy == STRATEGY_ENFORCED_AUDIBLE) &&
2772                    (mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_NONE))) &&
2773        streamDesc.mCanBeMuted) {
2774        volume *= SONIFICATION_HEADSET_VOLUME_FACTOR;
2775        // when the phone is ringing we must consider that music could have been paused just before
2776        // by the music application and behave as if music was active if the last music track was
2777        // just stopped
2778        if (isStreamActive(AudioSystem::MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY) ||
2779                mLimitRingtoneVolume) {
2780            audio_devices_t musicDevice = getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/);
2781            float musicVol = computeVolume(AudioSystem::MUSIC,
2782                               mStreams[AudioSystem::MUSIC].getVolumeIndex(musicDevice),
2783                               output,
2784                               musicDevice);
2785            float minVol = (musicVol > SONIFICATION_HEADSET_VOLUME_MIN) ?
2786                                musicVol : SONIFICATION_HEADSET_VOLUME_MIN;
2787            if (volume > minVol) {
2788                volume = minVol;
2789                ALOGV("computeVolume limiting volume to %f musicVol %f", minVol, musicVol);
2790            }
2791        }
2792    }
2793
2794    return volume;
2795}
2796
2797status_t AudioPolicyManagerBase::checkAndSetVolume(int stream,
2798                                                   int index,
2799                                                   audio_io_handle_t output,
2800                                                   audio_devices_t device,
2801                                                   int delayMs,
2802                                                   bool force)
2803{
2804
2805    // do not change actual stream volume if the stream is muted
2806    if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) {
2807        ALOGVV("checkAndSetVolume() stream %d muted count %d",
2808              stream, mOutputs.valueFor(output)->mMuteCount[stream]);
2809        return NO_ERROR;
2810    }
2811
2812    // do not change in call volume if bluetooth is connected and vice versa
2813    if ((stream == AudioSystem::VOICE_CALL && mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) ||
2814        (stream == AudioSystem::BLUETOOTH_SCO && mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO)) {
2815        ALOGV("checkAndSetVolume() cannot set stream %d volume with force use = %d for comm",
2816             stream, mForceUse[AudioSystem::FOR_COMMUNICATION]);
2817        return INVALID_OPERATION;
2818    }
2819
2820    float volume = computeVolume(stream, index, output, device);
2821    // We actually change the volume if:
2822    // - the float value returned by computeVolume() changed
2823    // - the force flag is set
2824    if (volume != mOutputs.valueFor(output)->mCurVolume[stream] ||
2825            force) {
2826        mOutputs.valueFor(output)->mCurVolume[stream] = volume;
2827        ALOGVV("checkAndSetVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs);
2828        // Force VOICE_CALL to track BLUETOOTH_SCO stream volume when bluetooth audio is
2829        // enabled
2830        if (stream == AudioSystem::BLUETOOTH_SCO) {
2831            mpClientInterface->setStreamVolume(AudioSystem::VOICE_CALL, volume, output, delayMs);
2832        }
2833        mpClientInterface->setStreamVolume((AudioSystem::stream_type)stream, volume, output, delayMs);
2834    }
2835
2836    if (stream == AudioSystem::VOICE_CALL ||
2837        stream == AudioSystem::BLUETOOTH_SCO) {
2838        float voiceVolume;
2839        // Force voice volume to max for bluetooth SCO as volume is managed by the headset
2840        if (stream == AudioSystem::VOICE_CALL) {
2841            voiceVolume = (float)index/(float)mStreams[stream].mIndexMax;
2842        } else {
2843            voiceVolume = 1.0;
2844        }
2845
2846        if (voiceVolume != mLastVoiceVolume && output == mPrimaryOutput) {
2847            mpClientInterface->setVoiceVolume(voiceVolume, delayMs);
2848            mLastVoiceVolume = voiceVolume;
2849        }
2850    }
2851
2852    return NO_ERROR;
2853}
2854
2855void AudioPolicyManagerBase::applyStreamVolumes(audio_io_handle_t output,
2856                                                audio_devices_t device,
2857                                                int delayMs,
2858                                                bool force)
2859{
2860    ALOGVV("applyStreamVolumes() for output %d and device %x", output, device);
2861
2862    for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
2863        checkAndSetVolume(stream,
2864                          mStreams[stream].getVolumeIndex(device),
2865                          output,
2866                          device,
2867                          delayMs,
2868                          force);
2869    }
2870}
2871
2872void AudioPolicyManagerBase::setStrategyMute(routing_strategy strategy,
2873                                             bool on,
2874                                             audio_io_handle_t output,
2875                                             int delayMs,
2876                                             audio_devices_t device)
2877{
2878    ALOGVV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output);
2879    for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
2880        if (getStrategy((AudioSystem::stream_type)stream) == strategy) {
2881            setStreamMute(stream, on, output, delayMs, device);
2882        }
2883    }
2884}
2885
2886void AudioPolicyManagerBase::setStreamMute(int stream,
2887                                           bool on,
2888                                           audio_io_handle_t output,
2889                                           int delayMs,
2890                                           audio_devices_t device)
2891{
2892    StreamDescriptor &streamDesc = mStreams[stream];
2893    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2894    if (device == AUDIO_DEVICE_NONE) {
2895        device = outputDesc->device();
2896    }
2897
2898    ALOGVV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d device %04x",
2899          stream, on, output, outputDesc->mMuteCount[stream], device);
2900
2901    if (on) {
2902        if (outputDesc->mMuteCount[stream] == 0) {
2903            if (streamDesc.mCanBeMuted &&
2904                    ((stream != AudioSystem::ENFORCED_AUDIBLE) ||
2905                     (mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_NONE))) {
2906                checkAndSetVolume(stream, 0, output, device, delayMs);
2907            }
2908        }
2909        // increment mMuteCount after calling checkAndSetVolume() so that volume change is not ignored
2910        outputDesc->mMuteCount[stream]++;
2911    } else {
2912        if (outputDesc->mMuteCount[stream] == 0) {
2913            ALOGV("setStreamMute() unmuting non muted stream!");
2914            return;
2915        }
2916        if (--outputDesc->mMuteCount[stream] == 0) {
2917            checkAndSetVolume(stream,
2918                              streamDesc.getVolumeIndex(device),
2919                              output,
2920                              device,
2921                              delayMs);
2922        }
2923    }
2924}
2925
2926void AudioPolicyManagerBase::handleIncallSonification(int stream, bool starting, bool stateChange)
2927{
2928    // if the stream pertains to sonification strategy and we are in call we must
2929    // mute the stream if it is low visibility. If it is high visibility, we must play a tone
2930    // in the device used for phone strategy and play the tone if the selected device does not
2931    // interfere with the device used for phone strategy
2932    // if stateChange is true, we are called from setPhoneState() and we must mute or unmute as
2933    // many times as there are active tracks on the output
2934    const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream);
2935    if ((stream_strategy == STRATEGY_SONIFICATION) ||
2936            ((stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL))) {
2937        AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mPrimaryOutput);
2938        ALOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d",
2939                stream, starting, outputDesc->mDevice, stateChange);
2940        if (outputDesc->mRefCount[stream]) {
2941            int muteCount = 1;
2942            if (stateChange) {
2943                muteCount = outputDesc->mRefCount[stream];
2944            }
2945            if (AudioSystem::isLowVisibility((AudioSystem::stream_type)stream)) {
2946                ALOGV("handleIncallSonification() low visibility, muteCount %d", muteCount);
2947                for (int i = 0; i < muteCount; i++) {
2948                    setStreamMute(stream, starting, mPrimaryOutput);
2949                }
2950            } else {
2951                ALOGV("handleIncallSonification() high visibility");
2952                if (outputDesc->device() &
2953                        getDeviceForStrategy(STRATEGY_PHONE, true /*fromCache*/)) {
2954                    ALOGV("handleIncallSonification() high visibility muted, muteCount %d", muteCount);
2955                    for (int i = 0; i < muteCount; i++) {
2956                        setStreamMute(stream, starting, mPrimaryOutput);
2957                    }
2958                }
2959                if (starting) {
2960                    mpClientInterface->startTone(ToneGenerator::TONE_SUP_CALL_WAITING, AudioSystem::VOICE_CALL);
2961                } else {
2962                    mpClientInterface->stopTone();
2963                }
2964            }
2965        }
2966    }
2967}
2968
2969bool AudioPolicyManagerBase::isInCall()
2970{
2971    return isStateInCall(mPhoneState);
2972}
2973
2974bool AudioPolicyManagerBase::isStateInCall(int state) {
2975    return ((state == AudioSystem::MODE_IN_CALL) ||
2976            (state == AudioSystem::MODE_IN_COMMUNICATION));
2977}
2978
2979bool AudioPolicyManagerBase::needsDirectOuput(audio_stream_type_t stream,
2980                                              uint32_t samplingRate,
2981                                              audio_format_t format,
2982                                              audio_channel_mask_t channelMask,
2983                                              audio_output_flags_t flags,
2984                                              audio_devices_t device)
2985{
2986   return ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) ||
2987          (format != 0 && !AudioSystem::isLinearPCM(format)));
2988}
2989
2990uint32_t AudioPolicyManagerBase::getMaxEffectsCpuLoad()
2991{
2992    return MAX_EFFECTS_CPU_LOAD;
2993}
2994
2995uint32_t AudioPolicyManagerBase::getMaxEffectsMemory()
2996{
2997    return MAX_EFFECTS_MEMORY;
2998}
2999
3000// --- AudioOutputDescriptor class implementation
3001
3002AudioPolicyManagerBase::AudioOutputDescriptor::AudioOutputDescriptor(
3003        const IOProfile *profile)
3004    : mId(0), mSamplingRate(0), mFormat((audio_format_t)0),
3005      mChannelMask((audio_channel_mask_t)0), mLatency(0),
3006    mFlags((audio_output_flags_t)0), mDevice(AUDIO_DEVICE_NONE),
3007    mOutput1(0), mOutput2(0), mProfile(profile)
3008{
3009    // clear usage count for all stream types
3010    for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
3011        mRefCount[i] = 0;
3012        mCurVolume[i] = -1.0;
3013        mMuteCount[i] = 0;
3014        mStopTime[i] = 0;
3015    }
3016    for (int i = 0; i < NUM_STRATEGIES; i++) {
3017        mStrategyMutedByDevice[i] = false;
3018    }
3019    if (profile != NULL) {
3020        mSamplingRate = profile->mSamplingRates[0];
3021        mFormat = profile->mFormats[0];
3022        mChannelMask = profile->mChannelMasks[0];
3023        mFlags = profile->mFlags;
3024    }
3025}
3026
3027audio_devices_t AudioPolicyManagerBase::AudioOutputDescriptor::device() const
3028{
3029    if (isDuplicated()) {
3030        return (audio_devices_t)(mOutput1->mDevice | mOutput2->mDevice);
3031    } else {
3032        return mDevice;
3033    }
3034}
3035
3036uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::latency()
3037{
3038    if (isDuplicated()) {
3039        return (mOutput1->mLatency > mOutput2->mLatency) ? mOutput1->mLatency : mOutput2->mLatency;
3040    } else {
3041        return mLatency;
3042    }
3043}
3044
3045bool AudioPolicyManagerBase::AudioOutputDescriptor::sharesHwModuleWith(
3046        const AudioOutputDescriptor *outputDesc)
3047{
3048    if (isDuplicated()) {
3049        return mOutput1->sharesHwModuleWith(outputDesc) || mOutput2->sharesHwModuleWith(outputDesc);
3050    } else if (outputDesc->isDuplicated()){
3051        return sharesHwModuleWith(outputDesc->mOutput1) || sharesHwModuleWith(outputDesc->mOutput2);
3052    } else {
3053        return (mProfile->mModule == outputDesc->mProfile->mModule);
3054    }
3055}
3056
3057void AudioPolicyManagerBase::AudioOutputDescriptor::changeRefCount(AudioSystem::stream_type stream, int delta)
3058{
3059    // forward usage count change to attached outputs
3060    if (isDuplicated()) {
3061        mOutput1->changeRefCount(stream, delta);
3062        mOutput2->changeRefCount(stream, delta);
3063    }
3064    if ((delta + (int)mRefCount[stream]) < 0) {
3065        ALOGW("changeRefCount() invalid delta %d for stream %d, refCount %d", delta, stream, mRefCount[stream]);
3066        mRefCount[stream] = 0;
3067        return;
3068    }
3069    mRefCount[stream] += delta;
3070    ALOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]);
3071}
3072
3073uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::refCount()
3074{
3075    uint32_t refcount = 0;
3076    for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
3077        refcount += mRefCount[i];
3078    }
3079    return refcount;
3080}
3081
3082uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::strategyRefCount(routing_strategy strategy)
3083{
3084    uint32_t refCount = 0;
3085    for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
3086        if (getStrategy((AudioSystem::stream_type)i) == strategy) {
3087            refCount += mRefCount[i];
3088        }
3089    }
3090    return refCount;
3091}
3092
3093audio_devices_t AudioPolicyManagerBase::AudioOutputDescriptor::supportedDevices()
3094{
3095    if (isDuplicated()) {
3096        return (audio_devices_t)(mOutput1->supportedDevices() | mOutput2->supportedDevices());
3097    } else {
3098        return mProfile->mSupportedDevices ;
3099    }
3100}
3101
3102bool AudioPolicyManagerBase::AudioOutputDescriptor::isActive(uint32_t inPastMs) const
3103{
3104    nsecs_t sysTime = systemTime();
3105    for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
3106        if (mRefCount[i] != 0 ||
3107            ns2ms(sysTime - mStopTime[i]) < inPastMs) {
3108            return true;
3109        }
3110    }
3111    return false;
3112}
3113
3114status_t AudioPolicyManagerBase::AudioOutputDescriptor::dump(int fd)
3115{
3116    const size_t SIZE = 256;
3117    char buffer[SIZE];
3118    String8 result;
3119
3120    snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
3121    result.append(buffer);
3122    snprintf(buffer, SIZE, " Format: %d\n", mFormat);
3123    result.append(buffer);
3124    snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask);
3125    result.append(buffer);
3126    snprintf(buffer, SIZE, " Latency: %d\n", mLatency);
3127    result.append(buffer);
3128    snprintf(buffer, SIZE, " Flags %08x\n", mFlags);
3129    result.append(buffer);
3130    snprintf(buffer, SIZE, " Devices %08x\n", device());
3131    result.append(buffer);
3132    snprintf(buffer, SIZE, " Stream volume refCount muteCount\n");
3133    result.append(buffer);
3134    for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
3135        snprintf(buffer, SIZE, " %02d     %.03f     %02d       %02d\n", i, mCurVolume[i], mRefCount[i], mMuteCount[i]);
3136        result.append(buffer);
3137    }
3138    write(fd, result.string(), result.size());
3139
3140    return NO_ERROR;
3141}
3142
3143// --- AudioInputDescriptor class implementation
3144
3145AudioPolicyManagerBase::AudioInputDescriptor::AudioInputDescriptor(const IOProfile *profile)
3146    : mSamplingRate(0), mFormat((audio_format_t)0), mChannelMask((audio_channel_mask_t)0),
3147      mDevice(AUDIO_DEVICE_NONE), mRefCount(0),
3148      mInputSource(0), mProfile(profile)
3149{
3150}
3151
3152status_t AudioPolicyManagerBase::AudioInputDescriptor::dump(int fd)
3153{
3154    const size_t SIZE = 256;
3155    char buffer[SIZE];
3156    String8 result;
3157
3158    snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
3159    result.append(buffer);
3160    snprintf(buffer, SIZE, " Format: %d\n", mFormat);
3161    result.append(buffer);
3162    snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask);
3163    result.append(buffer);
3164    snprintf(buffer, SIZE, " Devices %08x\n", mDevice);
3165    result.append(buffer);
3166    snprintf(buffer, SIZE, " Ref Count %d\n", mRefCount);
3167    result.append(buffer);
3168    write(fd, result.string(), result.size());
3169
3170    return NO_ERROR;
3171}
3172
3173// --- StreamDescriptor class implementation
3174
3175AudioPolicyManagerBase::StreamDescriptor::StreamDescriptor()
3176    :   mIndexMin(0), mIndexMax(1), mCanBeMuted(true)
3177{
3178    mIndexCur.add(AUDIO_DEVICE_OUT_DEFAULT, 0);
3179}
3180
3181int AudioPolicyManagerBase::StreamDescriptor::getVolumeIndex(audio_devices_t device)
3182{
3183    device = AudioPolicyManagerBase::getDeviceForVolume(device);
3184    // there is always a valid entry for AUDIO_DEVICE_OUT_DEFAULT
3185    if (mIndexCur.indexOfKey(device) < 0) {
3186        device = AUDIO_DEVICE_OUT_DEFAULT;
3187    }
3188    return mIndexCur.valueFor(device);
3189}
3190
3191void AudioPolicyManagerBase::StreamDescriptor::dump(int fd)
3192{
3193    const size_t SIZE = 256;
3194    char buffer[SIZE];
3195    String8 result;
3196
3197    snprintf(buffer, SIZE, "%s         %02d         %02d         ",
3198             mCanBeMuted ? "true " : "false", mIndexMin, mIndexMax);
3199    result.append(buffer);
3200    for (size_t i = 0; i < mIndexCur.size(); i++) {
3201        snprintf(buffer, SIZE, "%04x : %02d, ",
3202                 mIndexCur.keyAt(i),
3203                 mIndexCur.valueAt(i));
3204        result.append(buffer);
3205    }
3206    result.append("\n");
3207
3208    write(fd, result.string(), result.size());
3209}
3210
3211// --- EffectDescriptor class implementation
3212
3213status_t AudioPolicyManagerBase::EffectDescriptor::dump(int fd)
3214{
3215    const size_t SIZE = 256;
3216    char buffer[SIZE];
3217    String8 result;
3218
3219    snprintf(buffer, SIZE, " I/O: %d\n", mIo);
3220    result.append(buffer);
3221    snprintf(buffer, SIZE, " Strategy: %d\n", mStrategy);
3222    result.append(buffer);
3223    snprintf(buffer, SIZE, " Session: %d\n", mSession);
3224    result.append(buffer);
3225    snprintf(buffer, SIZE, " Name: %s\n",  mDesc.name);
3226    result.append(buffer);
3227    snprintf(buffer, SIZE, " %s\n",  mEnabled ? "Enabled" : "Disabled");
3228    result.append(buffer);
3229    write(fd, result.string(), result.size());
3230
3231    return NO_ERROR;
3232}
3233
3234// --- IOProfile class implementation
3235
3236AudioPolicyManagerBase::HwModule::HwModule(const char *name)
3237    : mName(strndup(name, AUDIO_HARDWARE_MODULE_ID_MAX_LEN)), mHandle(0)
3238{
3239}
3240
3241AudioPolicyManagerBase::HwModule::~HwModule()
3242{
3243    for (size_t i = 0; i < mOutputProfiles.size(); i++) {
3244         delete mOutputProfiles[i];
3245    }
3246    for (size_t i = 0; i < mInputProfiles.size(); i++) {
3247         delete mInputProfiles[i];
3248    }
3249    free((void *)mName);
3250}
3251
3252void AudioPolicyManagerBase::HwModule::dump(int fd)
3253{
3254    const size_t SIZE = 256;
3255    char buffer[SIZE];
3256    String8 result;
3257
3258    snprintf(buffer, SIZE, "  - name: %s\n", mName);
3259    result.append(buffer);
3260    snprintf(buffer, SIZE, "  - handle: %d\n", mHandle);
3261    result.append(buffer);
3262    write(fd, result.string(), result.size());
3263    if (mOutputProfiles.size()) {
3264        write(fd, "  - outputs:\n", sizeof("  - outputs:\n"));
3265        for (size_t i = 0; i < mOutputProfiles.size(); i++) {
3266            snprintf(buffer, SIZE, "    output %d:\n", i);
3267            write(fd, buffer, strlen(buffer));
3268            mOutputProfiles[i]->dump(fd);
3269        }
3270    }
3271    if (mInputProfiles.size()) {
3272        write(fd, "  - inputs:\n", sizeof("  - inputs:\n"));
3273        for (size_t i = 0; i < mInputProfiles.size(); i++) {
3274            snprintf(buffer, SIZE, "    input %d:\n", i);
3275            write(fd, buffer, strlen(buffer));
3276            mInputProfiles[i]->dump(fd);
3277        }
3278    }
3279}
3280
3281AudioPolicyManagerBase::IOProfile::IOProfile(HwModule *module)
3282    : mFlags((audio_output_flags_t)0), mModule(module)
3283{
3284}
3285
3286AudioPolicyManagerBase::IOProfile::~IOProfile()
3287{
3288}
3289
3290// checks if the IO profile is compatible with specified parameters. By convention a value of 0
3291// means a parameter is don't care
3292bool AudioPolicyManagerBase::IOProfile::isCompatibleProfile(audio_devices_t device,
3293                                                            uint32_t samplingRate,
3294                                                            uint32_t format,
3295                                                            uint32_t channelMask,
3296                                                            audio_output_flags_t flags) const
3297{
3298    if ((mSupportedDevices & device) != device) {
3299        return false;
3300    }
3301    if ((mFlags & flags) != flags) {
3302        return false;
3303    }
3304    if (samplingRate != 0) {
3305        size_t i;
3306        for (i = 0; i < mSamplingRates.size(); i++)
3307        {
3308            if (mSamplingRates[i] == samplingRate) {
3309                break;
3310            }
3311        }
3312        if (i == mSamplingRates.size()) {
3313            return false;
3314        }
3315    }
3316    if (format != 0) {
3317        size_t i;
3318        for (i = 0; i < mFormats.size(); i++)
3319        {
3320            if (mFormats[i] == format) {
3321                break;
3322            }
3323        }
3324        if (i == mFormats.size()) {
3325            return false;
3326        }
3327    }
3328    if (channelMask != 0) {
3329        size_t i;
3330        for (i = 0; i < mChannelMasks.size(); i++)
3331        {
3332            if (mChannelMasks[i] == channelMask) {
3333                break;
3334            }
3335        }
3336        if (i == mChannelMasks.size()) {
3337            return false;
3338        }
3339    }
3340    return true;
3341}
3342
3343void AudioPolicyManagerBase::IOProfile::dump(int fd)
3344{
3345    const size_t SIZE = 256;
3346    char buffer[SIZE];
3347    String8 result;
3348
3349    snprintf(buffer, SIZE, "    - sampling rates: ");
3350    result.append(buffer);
3351    for (size_t i = 0; i < mSamplingRates.size(); i++) {
3352        snprintf(buffer, SIZE, "%d", mSamplingRates[i]);
3353        result.append(buffer);
3354        result.append(i == (mSamplingRates.size() - 1) ? "\n" : ", ");
3355    }
3356
3357    snprintf(buffer, SIZE, "    - channel masks: ");
3358    result.append(buffer);
3359    for (size_t i = 0; i < mChannelMasks.size(); i++) {
3360        snprintf(buffer, SIZE, "%04x", mChannelMasks[i]);
3361        result.append(buffer);
3362        result.append(i == (mChannelMasks.size() - 1) ? "\n" : ", ");
3363    }
3364
3365    snprintf(buffer, SIZE, "    - formats: ");
3366    result.append(buffer);
3367    for (size_t i = 0; i < mFormats.size(); i++) {
3368        snprintf(buffer, SIZE, "%d", mFormats[i]);
3369        result.append(buffer);
3370        result.append(i == (mFormats.size() - 1) ? "\n" : ", ");
3371    }
3372
3373    snprintf(buffer, SIZE, "    - devices: %04x\n", mSupportedDevices);
3374    result.append(buffer);
3375    snprintf(buffer, SIZE, "    - flags: %04x\n", mFlags);
3376    result.append(buffer);
3377
3378    write(fd, result.string(), result.size());
3379}
3380
3381// --- audio_policy.conf file parsing
3382
3383struct StringToEnum {
3384    const char *name;
3385    uint32_t value;
3386};
3387
3388#define STRING_TO_ENUM(string) { #string, string }
3389#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
3390
3391const struct StringToEnum sDeviceNameToEnumTable[] = {
3392    STRING_TO_ENUM(AUDIO_DEVICE_OUT_EARPIECE),
3393    STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPEAKER),
3394    STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADSET),
3395    STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADPHONE),
3396    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_SCO),
3397    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_A2DP),
3398    STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_DIGITAL),
3399    STRING_TO_ENUM(AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET),
3400    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET),
3401    STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_DEVICE),
3402    STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_ACCESSORY),
3403    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_USB),
3404    STRING_TO_ENUM(AUDIO_DEVICE_OUT_REMOTE_SUBMIX),
3405    STRING_TO_ENUM(AUDIO_DEVICE_IN_BUILTIN_MIC),
3406    STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET),
3407    STRING_TO_ENUM(AUDIO_DEVICE_IN_WIRED_HEADSET),
3408    STRING_TO_ENUM(AUDIO_DEVICE_IN_AUX_DIGITAL),
3409    STRING_TO_ENUM(AUDIO_DEVICE_IN_VOICE_CALL),
3410    STRING_TO_ENUM(AUDIO_DEVICE_IN_BACK_MIC),
3411    STRING_TO_ENUM(AUDIO_DEVICE_IN_REMOTE_SUBMIX),
3412    STRING_TO_ENUM(AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET),
3413    STRING_TO_ENUM(AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET),
3414    STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_ACCESSORY),
3415};
3416
3417const struct StringToEnum sFlagNameToEnumTable[] = {
3418    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DIRECT),
3419    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_PRIMARY),
3420    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_FAST),
3421    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DEEP_BUFFER),
3422};
3423
3424const struct StringToEnum sFormatNameToEnumTable[] = {
3425    STRING_TO_ENUM(AUDIO_FORMAT_PCM_16_BIT),
3426    STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_BIT),
3427    STRING_TO_ENUM(AUDIO_FORMAT_MP3),
3428    STRING_TO_ENUM(AUDIO_FORMAT_AAC),
3429    STRING_TO_ENUM(AUDIO_FORMAT_VORBIS),
3430};
3431
3432const struct StringToEnum sOutChannelsNameToEnumTable[] = {
3433    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_MONO),
3434    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO),
3435    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1),
3436    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1),
3437};
3438
3439const struct StringToEnum sInChannelsNameToEnumTable[] = {
3440    STRING_TO_ENUM(AUDIO_CHANNEL_IN_MONO),
3441    STRING_TO_ENUM(AUDIO_CHANNEL_IN_STEREO),
3442    STRING_TO_ENUM(AUDIO_CHANNEL_IN_FRONT_BACK),
3443};
3444
3445
3446uint32_t AudioPolicyManagerBase::stringToEnum(const struct StringToEnum *table,
3447                                              size_t size,
3448                                              const char *name)
3449{
3450    for (size_t i = 0; i < size; i++) {
3451        if (strcmp(table[i].name, name) == 0) {
3452            ALOGV("stringToEnum() found %s", table[i].name);
3453            return table[i].value;
3454        }
3455    }
3456    return 0;
3457}
3458
3459audio_output_flags_t AudioPolicyManagerBase::parseFlagNames(char *name)
3460{
3461    uint32_t flag = 0;
3462
3463    // it is OK to cast name to non const here as we are not going to use it after
3464    // strtok() modifies it
3465    char *flagName = strtok(name, "|");
3466    while (flagName != NULL) {
3467        if (strlen(flagName) != 0) {
3468            flag |= stringToEnum(sFlagNameToEnumTable,
3469                               ARRAY_SIZE(sFlagNameToEnumTable),
3470                               flagName);
3471        }
3472        flagName = strtok(NULL, "|");
3473    }
3474    return (audio_output_flags_t)flag;
3475}
3476
3477audio_devices_t AudioPolicyManagerBase::parseDeviceNames(char *name)
3478{
3479    uint32_t device = 0;
3480
3481    char *devName = strtok(name, "|");
3482    while (devName != NULL) {
3483        if (strlen(devName) != 0) {
3484            device |= stringToEnum(sDeviceNameToEnumTable,
3485                                 ARRAY_SIZE(sDeviceNameToEnumTable),
3486                                 devName);
3487        }
3488        devName = strtok(NULL, "|");
3489    }
3490    return device;
3491}
3492
3493void AudioPolicyManagerBase::loadSamplingRates(char *name, IOProfile *profile)
3494{
3495    char *str = strtok(name, "|");
3496
3497    // by convention, "0' in the first entry in mSamplingRates indicates the supported sampling
3498    // rates should be read from the output stream after it is opened for the first time
3499    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3500        profile->mSamplingRates.add(0);
3501        return;
3502    }
3503
3504    while (str != NULL) {
3505        uint32_t rate = atoi(str);
3506        if (rate != 0) {
3507            ALOGV("loadSamplingRates() adding rate %d", rate);
3508            profile->mSamplingRates.add(rate);
3509        }
3510        str = strtok(NULL, "|");
3511    }
3512    return;
3513}
3514
3515void AudioPolicyManagerBase::loadFormats(char *name, IOProfile *profile)
3516{
3517    char *str = strtok(name, "|");
3518
3519    // by convention, "0' in the first entry in mFormats indicates the supported formats
3520    // should be read from the output stream after it is opened for the first time
3521    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3522        profile->mFormats.add((audio_format_t)0);
3523        return;
3524    }
3525
3526    while (str != NULL) {
3527        audio_format_t format = (audio_format_t)stringToEnum(sFormatNameToEnumTable,
3528                                                             ARRAY_SIZE(sFormatNameToEnumTable),
3529                                                             str);
3530        if (format != 0) {
3531            profile->mFormats.add(format);
3532        }
3533        str = strtok(NULL, "|");
3534    }
3535    return;
3536}
3537
3538void AudioPolicyManagerBase::loadInChannels(char *name, IOProfile *profile)
3539{
3540    const char *str = strtok(name, "|");
3541
3542    ALOGV("loadInChannels() %s", name);
3543
3544    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3545        profile->mChannelMasks.add((audio_channel_mask_t)0);
3546        return;
3547    }
3548
3549    while (str != NULL) {
3550        audio_channel_mask_t channelMask =
3551                (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable,
3552                                                   ARRAY_SIZE(sInChannelsNameToEnumTable),
3553                                                   str);
3554        if (channelMask != 0) {
3555            ALOGV("loadInChannels() adding channelMask %04x", channelMask);
3556            profile->mChannelMasks.add(channelMask);
3557        }
3558        str = strtok(NULL, "|");
3559    }
3560    return;
3561}
3562
3563void AudioPolicyManagerBase::loadOutChannels(char *name, IOProfile *profile)
3564{
3565    const char *str = strtok(name, "|");
3566
3567    ALOGV("loadOutChannels() %s", name);
3568
3569    // by convention, "0' in the first entry in mChannelMasks indicates the supported channel
3570    // masks should be read from the output stream after it is opened for the first time
3571    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3572        profile->mChannelMasks.add((audio_channel_mask_t)0);
3573        return;
3574    }
3575
3576    while (str != NULL) {
3577        audio_channel_mask_t channelMask =
3578                (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable,
3579                                                   ARRAY_SIZE(sOutChannelsNameToEnumTable),
3580                                                   str);
3581        if (channelMask != 0) {
3582            profile->mChannelMasks.add(channelMask);
3583        }
3584        str = strtok(NULL, "|");
3585    }
3586    return;
3587}
3588
3589status_t AudioPolicyManagerBase::loadInput(cnode *root, HwModule *module)
3590{
3591    cnode *node = root->first_child;
3592
3593    IOProfile *profile = new IOProfile(module);
3594
3595    while (node) {
3596        if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) {
3597            loadSamplingRates((char *)node->value, profile);
3598        } else if (strcmp(node->name, FORMATS_TAG) == 0) {
3599            loadFormats((char *)node->value, profile);
3600        } else if (strcmp(node->name, CHANNELS_TAG) == 0) {
3601            loadInChannels((char *)node->value, profile);
3602        } else if (strcmp(node->name, DEVICES_TAG) == 0) {
3603            profile->mSupportedDevices = parseDeviceNames((char *)node->value);
3604        }
3605        node = node->next;
3606    }
3607    ALOGW_IF(profile->mSupportedDevices == AUDIO_DEVICE_NONE,
3608            "loadInput() invalid supported devices");
3609    ALOGW_IF(profile->mChannelMasks.size() == 0,
3610            "loadInput() invalid supported channel masks");
3611    ALOGW_IF(profile->mSamplingRates.size() == 0,
3612            "loadInput() invalid supported sampling rates");
3613    ALOGW_IF(profile->mFormats.size() == 0,
3614            "loadInput() invalid supported formats");
3615    if ((profile->mSupportedDevices != AUDIO_DEVICE_NONE) &&
3616            (profile->mChannelMasks.size() != 0) &&
3617            (profile->mSamplingRates.size() != 0) &&
3618            (profile->mFormats.size() != 0)) {
3619
3620        ALOGV("loadInput() adding input mSupportedDevices %04x", profile->mSupportedDevices);
3621
3622        module->mInputProfiles.add(profile);
3623        return NO_ERROR;
3624    } else {
3625        delete profile;
3626        return BAD_VALUE;
3627    }
3628}
3629
3630status_t AudioPolicyManagerBase::loadOutput(cnode *root, HwModule *module)
3631{
3632    cnode *node = root->first_child;
3633
3634    IOProfile *profile = new IOProfile(module);
3635
3636    while (node) {
3637        if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) {
3638            loadSamplingRates((char *)node->value, profile);
3639        } else if (strcmp(node->name, FORMATS_TAG) == 0) {
3640            loadFormats((char *)node->value, profile);
3641        } else if (strcmp(node->name, CHANNELS_TAG) == 0) {
3642            loadOutChannels((char *)node->value, profile);
3643        } else if (strcmp(node->name, DEVICES_TAG) == 0) {
3644            profile->mSupportedDevices = parseDeviceNames((char *)node->value);
3645        } else if (strcmp(node->name, FLAGS_TAG) == 0) {
3646            profile->mFlags = parseFlagNames((char *)node->value);
3647        }
3648        node = node->next;
3649    }
3650    ALOGW_IF(profile->mSupportedDevices == AUDIO_DEVICE_NONE,
3651            "loadOutput() invalid supported devices");
3652    ALOGW_IF(profile->mChannelMasks.size() == 0,
3653            "loadOutput() invalid supported channel masks");
3654    ALOGW_IF(profile->mSamplingRates.size() == 0,
3655            "loadOutput() invalid supported sampling rates");
3656    ALOGW_IF(profile->mFormats.size() == 0,
3657            "loadOutput() invalid supported formats");
3658    if ((profile->mSupportedDevices != AUDIO_DEVICE_NONE) &&
3659            (profile->mChannelMasks.size() != 0) &&
3660            (profile->mSamplingRates.size() != 0) &&
3661            (profile->mFormats.size() != 0)) {
3662
3663        ALOGV("loadOutput() adding output mSupportedDevices %04x, mFlags %04x",
3664              profile->mSupportedDevices, profile->mFlags);
3665
3666        module->mOutputProfiles.add(profile);
3667        return NO_ERROR;
3668    } else {
3669        delete profile;
3670        return BAD_VALUE;
3671    }
3672}
3673
3674void AudioPolicyManagerBase::loadHwModule(cnode *root)
3675{
3676    cnode *node = config_find(root, OUTPUTS_TAG);
3677    status_t status = NAME_NOT_FOUND;
3678
3679    HwModule *module = new HwModule(root->name);
3680
3681    if (node != NULL) {
3682        if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_A2DP) == 0) {
3683            mHasA2dp = true;
3684        } else if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_USB) == 0) {
3685            mHasUsb = true;
3686        } else if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX) == 0) {
3687            mHasRemoteSubmix = true;
3688        }
3689
3690        node = node->first_child;
3691        while (node) {
3692            ALOGV("loadHwModule() loading output %s", node->name);
3693            status_t tmpStatus = loadOutput(node, module);
3694            if (status == NAME_NOT_FOUND || status == NO_ERROR) {
3695                status = tmpStatus;
3696            }
3697            node = node->next;
3698        }
3699    }
3700    node = config_find(root, INPUTS_TAG);
3701    if (node != NULL) {
3702        node = node->first_child;
3703        while (node) {
3704            ALOGV("loadHwModule() loading input %s", node->name);
3705            status_t tmpStatus = loadInput(node, module);
3706            if (status == NAME_NOT_FOUND || status == NO_ERROR) {
3707                status = tmpStatus;
3708            }
3709            node = node->next;
3710        }
3711    }
3712    if (status == NO_ERROR) {
3713        mHwModules.add(module);
3714    } else {
3715        delete module;
3716    }
3717}
3718
3719void AudioPolicyManagerBase::loadHwModules(cnode *root)
3720{
3721    cnode *node = config_find(root, AUDIO_HW_MODULE_TAG);
3722    if (node == NULL) {
3723        return;
3724    }
3725
3726    node = node->first_child;
3727    while (node) {
3728        ALOGV("loadHwModules() loading module %s", node->name);
3729        loadHwModule(node);
3730        node = node->next;
3731    }
3732}
3733
3734void AudioPolicyManagerBase::loadGlobalConfig(cnode *root)
3735{
3736    cnode *node = config_find(root, GLOBAL_CONFIG_TAG);
3737    if (node == NULL) {
3738        return;
3739    }
3740    node = node->first_child;
3741    while (node) {
3742        if (strcmp(ATTACHED_OUTPUT_DEVICES_TAG, node->name) == 0) {
3743            mAttachedOutputDevices = parseDeviceNames((char *)node->value);
3744            ALOGW_IF(mAttachedOutputDevices == AUDIO_DEVICE_NONE,
3745                    "loadGlobalConfig() no attached output devices");
3746            ALOGV("loadGlobalConfig() mAttachedOutputDevices %04x", mAttachedOutputDevices);
3747        } else if (strcmp(DEFAULT_OUTPUT_DEVICE_TAG, node->name) == 0) {
3748            mDefaultOutputDevice = (audio_devices_t)stringToEnum(sDeviceNameToEnumTable,
3749                                              ARRAY_SIZE(sDeviceNameToEnumTable),
3750                                              (char *)node->value);
3751            ALOGW_IF(mDefaultOutputDevice == AUDIO_DEVICE_NONE,
3752                    "loadGlobalConfig() default device not specified");
3753            ALOGV("loadGlobalConfig() mDefaultOutputDevice %04x", mDefaultOutputDevice);
3754        } else if (strcmp(ATTACHED_INPUT_DEVICES_TAG, node->name) == 0) {
3755            mAvailableInputDevices = parseDeviceNames((char *)node->value) & ~AUDIO_DEVICE_BIT_IN;
3756            ALOGV("loadGlobalConfig() mAvailableInputDevices %04x", mAvailableInputDevices);
3757        }
3758        node = node->next;
3759    }
3760}
3761
3762status_t AudioPolicyManagerBase::loadAudioPolicyConfig(const char *path)
3763{
3764    cnode *root;
3765    char *data;
3766
3767    data = (char *)load_file(path, NULL);
3768    if (data == NULL) {
3769        return -ENODEV;
3770    }
3771    root = config_node("", "");
3772    config_load(root, data);
3773
3774    loadGlobalConfig(root);
3775    loadHwModules(root);
3776
3777    config_free(root);
3778    free(root);
3779    free(data);
3780
3781    ALOGI("loadAudioPolicyConfig() loaded %s\n", path);
3782
3783    return NO_ERROR;
3784}
3785
3786void AudioPolicyManagerBase::defaultAudioPolicyConfig(void)
3787{
3788    HwModule *module;
3789    IOProfile *profile;
3790
3791    mDefaultOutputDevice = AUDIO_DEVICE_OUT_SPEAKER;
3792    mAttachedOutputDevices = AUDIO_DEVICE_OUT_SPEAKER;
3793    mAvailableInputDevices = AUDIO_DEVICE_IN_BUILTIN_MIC & ~AUDIO_DEVICE_BIT_IN;
3794
3795    module = new HwModule("primary");
3796
3797    profile = new IOProfile(module);
3798    profile->mSamplingRates.add(44100);
3799    profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT);
3800    profile->mChannelMasks.add(AUDIO_CHANNEL_OUT_STEREO);
3801    profile->mSupportedDevices = AUDIO_DEVICE_OUT_SPEAKER;
3802    profile->mFlags = AUDIO_OUTPUT_FLAG_PRIMARY;
3803    module->mOutputProfiles.add(profile);
3804
3805    profile = new IOProfile(module);
3806    profile->mSamplingRates.add(8000);
3807    profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT);
3808    profile->mChannelMasks.add(AUDIO_CHANNEL_IN_MONO);
3809    profile->mSupportedDevices = AUDIO_DEVICE_IN_BUILTIN_MIC;
3810    module->mInputProfiles.add(profile);
3811
3812    mHwModules.add(module);
3813}
3814
3815}; // namespace android
3816