AudioPolicyManagerBase.cpp revision ae57fbe12a00c9705cdc77bf6e688ca9b36d3871 
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    int delayMs = 0;
339    if (isStateInCall(state)) {
340        nsecs_t sysTime = systemTime();
341        for (size_t i = 0; i < mOutputs.size(); i++) {
342            AudioOutputDescriptor *desc = mOutputs.valueAt(i);
343            // mute media and sonification strategies and delay device switch by the largest
344            // latency of any output where either strategy is active.
345            // This avoid sending the ring tone or music tail into the earpiece or headset.
346            if ((desc->isStrategyActive(STRATEGY_MEDIA,
347                                     SONIFICATION_HEADSET_MUSIC_DELAY,
348                                     sysTime) ||
349                    desc->isStrategyActive(STRATEGY_SONIFICATION,
350                                         SONIFICATION_HEADSET_MUSIC_DELAY,
351                                         sysTime)) &&
352                    (delayMs < (int)desc->mLatency*2)) {
353                delayMs = desc->mLatency*2;
354            }
355            setStrategyMute(STRATEGY_MEDIA, true, mOutputs.keyAt(i));
356            setStrategyMute(STRATEGY_MEDIA, false, mOutputs.keyAt(i), MUTE_TIME_MS,
357                getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/));
358            setStrategyMute(STRATEGY_SONIFICATION, true, mOutputs.keyAt(i));
359            setStrategyMute(STRATEGY_SONIFICATION, false, mOutputs.keyAt(i), MUTE_TIME_MS,
360                getDeviceForStrategy(STRATEGY_SONIFICATION, true /*fromCache*/));
361        }
362    }
363
364    // change routing is necessary
365    setOutputDevice(mPrimaryOutput, newDevice, force, delayMs);
366
367    // if entering in call state, handle special case of active streams
368    // pertaining to sonification strategy see handleIncallSonification()
369    if (isStateInCall(state)) {
370        ALOGV("setPhoneState() in call state management: new state is %d", state);
371        for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
372            handleIncallSonification(stream, true, true);
373        }
374    }
375
376    // Flag that ringtone volume must be limited to music volume until we exit MODE_RINGTONE
377    if (state == AudioSystem::MODE_RINGTONE &&
378        isStreamActive(AudioSystem::MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY)) {
379        mLimitRingtoneVolume = true;
380    } else {
381        mLimitRingtoneVolume = false;
382    }
383}
384
385void AudioPolicyManagerBase::setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config)
386{
387    ALOGV("setForceUse() usage %d, config %d, mPhoneState %d", usage, config, mPhoneState);
388
389    bool forceVolumeReeval = false;
390    switch(usage) {
391    case AudioSystem::FOR_COMMUNICATION:
392        if (config != AudioSystem::FORCE_SPEAKER && config != AudioSystem::FORCE_BT_SCO &&
393            config != AudioSystem::FORCE_NONE) {
394            ALOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config);
395            return;
396        }
397        forceVolumeReeval = true;
398        mForceUse[usage] = config;
399        break;
400    case AudioSystem::FOR_MEDIA:
401        if (config != AudioSystem::FORCE_HEADPHONES && config != AudioSystem::FORCE_BT_A2DP &&
402            config != AudioSystem::FORCE_WIRED_ACCESSORY &&
403            config != AudioSystem::FORCE_ANALOG_DOCK &&
404            config != AudioSystem::FORCE_DIGITAL_DOCK && config != AudioSystem::FORCE_NONE &&
405            config != AudioSystem::FORCE_NO_BT_A2DP) {
406            ALOGW("setForceUse() invalid config %d for FOR_MEDIA", config);
407            return;
408        }
409        mForceUse[usage] = config;
410        break;
411    case AudioSystem::FOR_RECORD:
412        if (config != AudioSystem::FORCE_BT_SCO && config != AudioSystem::FORCE_WIRED_ACCESSORY &&
413            config != AudioSystem::FORCE_NONE) {
414            ALOGW("setForceUse() invalid config %d for FOR_RECORD", config);
415            return;
416        }
417        mForceUse[usage] = config;
418        break;
419    case AudioSystem::FOR_DOCK:
420        if (config != AudioSystem::FORCE_NONE && config != AudioSystem::FORCE_BT_CAR_DOCK &&
421            config != AudioSystem::FORCE_BT_DESK_DOCK &&
422            config != AudioSystem::FORCE_WIRED_ACCESSORY &&
423            config != AudioSystem::FORCE_ANALOG_DOCK &&
424            config != AudioSystem::FORCE_DIGITAL_DOCK) {
425            ALOGW("setForceUse() invalid config %d for FOR_DOCK", config);
426        }
427        forceVolumeReeval = true;
428        mForceUse[usage] = config;
429        break;
430    case AudioSystem::FOR_SYSTEM:
431        if (config != AudioSystem::FORCE_NONE &&
432            config != AudioSystem::FORCE_SYSTEM_ENFORCED) {
433            ALOGW("setForceUse() invalid config %d for FOR_SYSTEM", config);
434        }
435        forceVolumeReeval = true;
436        mForceUse[usage] = config;
437        break;
438    default:
439        ALOGW("setForceUse() invalid usage %d", usage);
440        break;
441    }
442
443    // check for device and output changes triggered by new force usage
444    checkA2dpSuspend();
445    checkOutputForAllStrategies();
446    updateDevicesAndOutputs();
447    for (size_t i = 0; i < mOutputs.size(); i++) {
448        audio_io_handle_t output = mOutputs.keyAt(i);
449        audio_devices_t newDevice = getNewDevice(output, true /*fromCache*/);
450        setOutputDevice(output, newDevice, (newDevice != AUDIO_DEVICE_NONE));
451        if (forceVolumeReeval && (newDevice != AUDIO_DEVICE_NONE)) {
452            applyStreamVolumes(output, newDevice, 0, true);
453        }
454    }
455
456    audio_io_handle_t activeInput = getActiveInput();
457    if (activeInput != 0) {
458        AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
459        audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
460        if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
461            ALOGV("setForceUse() changing device from %x to %x for input %d",
462                    inputDesc->mDevice, newDevice, activeInput);
463            inputDesc->mDevice = newDevice;
464            AudioParameter param = AudioParameter();
465            param.addInt(String8(AudioParameter::keyRouting), (int)newDevice);
466            mpClientInterface->setParameters(activeInput, param.toString());
467        }
468    }
469
470}
471
472AudioSystem::forced_config AudioPolicyManagerBase::getForceUse(AudioSystem::force_use usage)
473{
474    return mForceUse[usage];
475}
476
477void AudioPolicyManagerBase::setSystemProperty(const char* property, const char* value)
478{
479    ALOGV("setSystemProperty() property %s, value %s", property, value);
480}
481
482AudioPolicyManagerBase::IOProfile *AudioPolicyManagerBase::getProfileForDirectOutput(
483                                                               audio_devices_t device,
484                                                               uint32_t samplingRate,
485                                                               uint32_t format,
486                                                               uint32_t channelMask,
487                                                               audio_output_flags_t flags)
488{
489    for (size_t i = 0; i < mHwModules.size(); i++) {
490        if (mHwModules[i]->mHandle == 0) {
491            continue;
492        }
493        for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) {
494           IOProfile *profile = mHwModules[i]->mOutputProfiles[j];
495           if (profile->isCompatibleProfile(device, samplingRate, format,
496                                           channelMask,
497                                           AUDIO_OUTPUT_FLAG_DIRECT)) {
498               if (mAvailableOutputDevices & profile->mSupportedDevices) {
499                   return mHwModules[i]->mOutputProfiles[j];
500               }
501           }
502        }
503    }
504    return 0;
505}
506
507audio_io_handle_t AudioPolicyManagerBase::getOutput(AudioSystem::stream_type stream,
508                                    uint32_t samplingRate,
509                                    uint32_t format,
510                                    uint32_t channelMask,
511                                    AudioSystem::output_flags flags,
512                                    const audio_offload_info_t *offloadInfo)
513{
514    audio_io_handle_t output = 0;
515    uint32_t latency = 0;
516    routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream);
517    audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/);
518    ALOGV("getOutput() stream %d, samplingRate %d, format %d, channelMask %x, flags %x",
519          stream, samplingRate, format, channelMask, flags);
520
521#ifdef AUDIO_POLICY_TEST
522    if (mCurOutput != 0) {
523        ALOGV("getOutput() test output mCurOutput %d, samplingRate %d, format %d, channelMask %x, mDirectOutput %d",
524                mCurOutput, mTestSamplingRate, mTestFormat, mTestChannels, mDirectOutput);
525
526        if (mTestOutputs[mCurOutput] == 0) {
527            ALOGV("getOutput() opening test output");
528            AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL);
529            outputDesc->mDevice = mTestDevice;
530            outputDesc->mSamplingRate = mTestSamplingRate;
531            outputDesc->mFormat = mTestFormat;
532            outputDesc->mChannelMask = mTestChannels;
533            outputDesc->mLatency = mTestLatencyMs;
534            outputDesc->mFlags = (audio_output_flags_t)(mDirectOutput ? AudioSystem::OUTPUT_FLAG_DIRECT : 0);
535            outputDesc->mRefCount[stream] = 0;
536            mTestOutputs[mCurOutput] = mpClientInterface->openOutput(0, &outputDesc->mDevice,
537                                            &outputDesc->mSamplingRate,
538                                            &outputDesc->mFormat,
539                                            &outputDesc->mChannelMask,
540                                            &outputDesc->mLatency,
541                                            outputDesc->mFlags,
542                                            offloadInfo);
543            if (mTestOutputs[mCurOutput]) {
544                AudioParameter outputCmd = AudioParameter();
545                outputCmd.addInt(String8("set_id"),mCurOutput);
546                mpClientInterface->setParameters(mTestOutputs[mCurOutput],outputCmd.toString());
547                addOutput(mTestOutputs[mCurOutput], outputDesc);
548            }
549        }
550        return mTestOutputs[mCurOutput];
551    }
552#endif //AUDIO_POLICY_TEST
553
554    // open a direct output if required by specified parameters
555    IOProfile *profile = getProfileForDirectOutput(device,
556                                                   samplingRate,
557                                                   format,
558                                                   channelMask,
559                                                   (audio_output_flags_t)flags);
560    if (profile != NULL) {
561        AudioOutputDescriptor *outputDesc = NULL;
562
563        for (size_t i = 0; i < mOutputs.size(); i++) {
564            AudioOutputDescriptor *desc = mOutputs.valueAt(i);
565            if (!desc->isDuplicated() && (profile == desc->mProfile)) {
566                outputDesc = desc;
567                // reuse direct output if currently open and configured with same parameters
568                if ((samplingRate == outputDesc->mSamplingRate) &&
569                        (format == outputDesc->mFormat) &&
570                        (channelMask == outputDesc->mChannelMask)) {
571                    outputDesc->mDirectOpenCount++;
572                    ALOGV("getOutput() reusing direct output %d", output);
573                    return mOutputs.keyAt(i);
574                }
575            }
576        }
577        // close direct output if currently open and configured with different parameters
578        if (outputDesc != NULL) {
579            closeOutput(outputDesc->mId);
580        }
581        outputDesc = new AudioOutputDescriptor(profile);
582        outputDesc->mDevice = device;
583        outputDesc->mSamplingRate = samplingRate;
584        outputDesc->mFormat = (audio_format_t)format;
585        outputDesc->mChannelMask = (audio_channel_mask_t)channelMask;
586        outputDesc->mLatency = 0;
587        outputDesc->mFlags =(audio_output_flags_t)
588                               (outputDesc->mFlags | flags | AUDIO_OUTPUT_FLAG_DIRECT);
589        outputDesc->mRefCount[stream] = 0;
590        outputDesc->mStopTime[stream] = 0;
591        outputDesc->mDirectOpenCount = 1;
592        output = mpClientInterface->openOutput(profile->mModule->mHandle,
593                                        &outputDesc->mDevice,
594                                        &outputDesc->mSamplingRate,
595                                        &outputDesc->mFormat,
596                                        &outputDesc->mChannelMask,
597                                        &outputDesc->mLatency,
598                                        outputDesc->mFlags);
599
600        // only accept an output with the requested parameters
601        if (output == 0 ||
602            (samplingRate != 0 && samplingRate != outputDesc->mSamplingRate) ||
603            (format != 0 && format != outputDesc->mFormat) ||
604            (channelMask != 0 && channelMask != outputDesc->mChannelMask)) {
605            ALOGV("getOutput() failed opening direct output: output %d samplingRate %d %d,"
606                    "format %d %d, channelMask %04x %04x", output, samplingRate,
607                    outputDesc->mSamplingRate, format, outputDesc->mFormat, channelMask,
608                    outputDesc->mChannelMask);
609            if (output != 0) {
610                mpClientInterface->closeOutput(output);
611            }
612            delete outputDesc;
613            return 0;
614        }
615        addOutput(output, outputDesc);
616        mPreviousOutputs = mOutputs;
617        ALOGV("getOutput() returns new direct output %d", output);
618        return output;
619    }
620
621    // ignoring channel mask due to downmix capability in mixer
622
623    // open a non direct output
624
625    // get which output is suitable for the specified stream. The actual routing change will happen
626    // when startOutput() will be called
627    SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(device, mOutputs);
628
629    output = selectOutput(outputs, flags);
630
631    ALOGW_IF((output ==0), "getOutput() could not find output for stream %d, samplingRate %d,"
632            "format %d, channels %x, flags %x", stream, samplingRate, format, channelMask, flags);
633
634    ALOGV("getOutput() returns output %d", output);
635
636    return output;
637}
638
639audio_io_handle_t AudioPolicyManagerBase::selectOutput(const SortedVector<audio_io_handle_t>& outputs,
640                                                       AudioSystem::output_flags flags)
641{
642    // select one output among several that provide a path to a particular device or set of
643    // devices (the list was previously build by getOutputsForDevice()).
644    // The priority is as follows:
645    // 1: the output with the highest number of requested policy flags
646    // 2: the primary output
647    // 3: the first output in the list
648
649    if (outputs.size() == 0) {
650        return 0;
651    }
652    if (outputs.size() == 1) {
653        return outputs[0];
654    }
655
656    int maxCommonFlags = 0;
657    audio_io_handle_t outputFlags = 0;
658    audio_io_handle_t outputPrimary = 0;
659
660    for (size_t i = 0; i < outputs.size(); i++) {
661        AudioOutputDescriptor *outputDesc = mOutputs.valueFor(outputs[i]);
662        if (!outputDesc->isDuplicated()) {
663            int commonFlags = (int)AudioSystem::popCount(outputDesc->mProfile->mFlags & flags);
664            if (commonFlags > maxCommonFlags) {
665                outputFlags = outputs[i];
666                maxCommonFlags = commonFlags;
667                ALOGV("selectOutput() commonFlags for output %d, %04x", outputs[i], commonFlags);
668            }
669            if (outputDesc->mProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) {
670                outputPrimary = outputs[i];
671            }
672        }
673    }
674
675    if (outputFlags != 0) {
676        return outputFlags;
677    }
678    if (outputPrimary != 0) {
679        return outputPrimary;
680    }
681
682    return outputs[0];
683}
684
685status_t AudioPolicyManagerBase::startOutput(audio_io_handle_t output,
686                                             AudioSystem::stream_type stream,
687                                             int session)
688{
689    ALOGV("startOutput() output %d, stream %d, session %d", output, stream, session);
690    ssize_t index = mOutputs.indexOfKey(output);
691    if (index < 0) {
692        ALOGW("startOutput() unknow output %d", output);
693        return BAD_VALUE;
694    }
695
696    AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
697
698    // increment usage count for this stream on the requested output:
699    // NOTE that the usage count is the same for duplicated output and hardware output which is
700    // necessary for a correct control of hardware output routing by startOutput() and stopOutput()
701    outputDesc->changeRefCount(stream, 1);
702
703    if (outputDesc->mRefCount[stream] == 1) {
704        audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/);
705        routing_strategy strategy = getStrategy(stream);
706        bool shouldWait = (strategy == STRATEGY_SONIFICATION) ||
707                            (strategy == STRATEGY_SONIFICATION_RESPECTFUL);
708        uint32_t waitMs = 0;
709        bool force = false;
710        for (size_t i = 0; i < mOutputs.size(); i++) {
711            AudioOutputDescriptor *desc = mOutputs.valueAt(i);
712            if (desc != outputDesc) {
713                // force a device change if any other output is managed by the same hw
714                // module and has a current device selection that differs from selected device.
715                // In this case, the audio HAL must receive the new device selection so that it can
716                // change the device currently selected by the other active output.
717                if (outputDesc->sharesHwModuleWith(desc) &&
718                    desc->device() != newDevice) {
719                    force = true;
720                }
721                // wait for audio on other active outputs to be presented when starting
722                // a notification so that audio focus effect can propagate.
723                uint32_t latency = desc->latency();
724                if (shouldWait && desc->isActive(latency * 2) && (waitMs < latency)) {
725                    waitMs = latency;
726                }
727            }
728        }
729        uint32_t muteWaitMs = setOutputDevice(output, newDevice, force);
730
731        // handle special case for sonification while in call
732        if (isInCall()) {
733            handleIncallSonification(stream, true, false);
734        }
735
736        // apply volume rules for current stream and device if necessary
737        checkAndSetVolume(stream,
738                          mStreams[stream].getVolumeIndex(newDevice),
739                          output,
740                          newDevice);
741
742        // update the outputs if starting an output with a stream that can affect notification
743        // routing
744        handleNotificationRoutingForStream(stream);
745        if (waitMs > muteWaitMs) {
746            usleep((waitMs - muteWaitMs) * 2 * 1000);
747        }
748    }
749    return NO_ERROR;
750}
751
752
753status_t AudioPolicyManagerBase::stopOutput(audio_io_handle_t output,
754                                            AudioSystem::stream_type stream,
755                                            int session)
756{
757    ALOGV("stopOutput() output %d, stream %d, session %d", output, stream, session);
758    ssize_t index = mOutputs.indexOfKey(output);
759    if (index < 0) {
760        ALOGW("stopOutput() unknow output %d", output);
761        return BAD_VALUE;
762    }
763
764    AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
765
766    // handle special case for sonification while in call
767    if (isInCall()) {
768        handleIncallSonification(stream, false, false);
769    }
770
771    if (outputDesc->mRefCount[stream] > 0) {
772        // decrement usage count of this stream on the output
773        outputDesc->changeRefCount(stream, -1);
774        // store time at which the stream was stopped - see isStreamActive()
775        if (outputDesc->mRefCount[stream] == 0) {
776            outputDesc->mStopTime[stream] = systemTime();
777            audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/);
778            // delay the device switch by twice the latency because stopOutput() is executed when
779            // the track stop() command is received and at that time the audio track buffer can
780            // still contain data that needs to be drained. The latency only covers the audio HAL
781            // and kernel buffers. Also the latency does not always include additional delay in the
782            // audio path (audio DSP, CODEC ...)
783            setOutputDevice(output, newDevice, false, outputDesc->mLatency*2);
784
785            // force restoring the device selection on other active outputs if it differs from the
786            // one being selected for this output
787            for (size_t i = 0; i < mOutputs.size(); i++) {
788                audio_io_handle_t curOutput = mOutputs.keyAt(i);
789                AudioOutputDescriptor *desc = mOutputs.valueAt(i);
790                if (curOutput != output &&
791                        desc->isActive() &&
792                        outputDesc->sharesHwModuleWith(desc) &&
793                        newDevice != desc->device()) {
794                    setOutputDevice(curOutput,
795                                    getNewDevice(curOutput, false /*fromCache*/),
796                                    true,
797                                    outputDesc->mLatency*2);
798                }
799            }
800            // update the outputs if stopping one with a stream that can affect notification routing
801            handleNotificationRoutingForStream(stream);
802        }
803        return NO_ERROR;
804    } else {
805        ALOGW("stopOutput() refcount is already 0 for output %d", output);
806        return INVALID_OPERATION;
807    }
808}
809
810void AudioPolicyManagerBase::releaseOutput(audio_io_handle_t output)
811{
812    ALOGV("releaseOutput() %d", output);
813    ssize_t index = mOutputs.indexOfKey(output);
814    if (index < 0) {
815        ALOGW("releaseOutput() releasing unknown output %d", output);
816        return;
817    }
818
819#ifdef AUDIO_POLICY_TEST
820    int testIndex = testOutputIndex(output);
821    if (testIndex != 0) {
822        AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
823        if (outputDesc->isActive()) {
824            mpClientInterface->closeOutput(output);
825            delete mOutputs.valueAt(index);
826            mOutputs.removeItem(output);
827            mTestOutputs[testIndex] = 0;
828        }
829        return;
830    }
831#endif //AUDIO_POLICY_TEST
832
833    AudioOutputDescriptor *desc = mOutputs.valueAt(index);
834    if (desc->mFlags & AudioSystem::OUTPUT_FLAG_DIRECT) {
835        if (desc->mDirectOpenCount <= 0) {
836            ALOGW("releaseOutput() invalid open count %d for output %d",
837                                                              desc->mDirectOpenCount, output);
838            return;
839        }
840        if (--desc->mDirectOpenCount == 0) {
841            closeOutput(output);
842        }
843    }
844
845}
846
847audio_io_handle_t AudioPolicyManagerBase::getInput(int inputSource,
848                                    uint32_t samplingRate,
849                                    uint32_t format,
850                                    uint32_t channelMask,
851                                    AudioSystem::audio_in_acoustics acoustics)
852{
853    audio_io_handle_t input = 0;
854    audio_devices_t device = getDeviceForInputSource(inputSource);
855
856    ALOGV("getInput() inputSource %d, samplingRate %d, format %d, channelMask %x, acoustics %x",
857          inputSource, samplingRate, format, channelMask, acoustics);
858
859    if (device == AUDIO_DEVICE_NONE) {
860        ALOGW("getInput() could not find device for inputSource %d", inputSource);
861        return 0;
862    }
863
864    // adapt channel selection to input source
865    switch(inputSource) {
866    case AUDIO_SOURCE_VOICE_UPLINK:
867        channelMask = AudioSystem::CHANNEL_IN_VOICE_UPLINK;
868        break;
869    case AUDIO_SOURCE_VOICE_DOWNLINK:
870        channelMask = AudioSystem::CHANNEL_IN_VOICE_DNLINK;
871        break;
872    case AUDIO_SOURCE_VOICE_CALL:
873        channelMask = (AudioSystem::CHANNEL_IN_VOICE_UPLINK | AudioSystem::CHANNEL_IN_VOICE_DNLINK);
874        break;
875    default:
876        break;
877    }
878
879    IOProfile *profile = getInputProfile(device,
880                                         samplingRate,
881                                         format,
882                                         channelMask);
883    if (profile == NULL) {
884        ALOGW("getInput() could not find profile for device %04x, samplingRate %d, format %d,"
885                "channelMask %04x",
886                device, samplingRate, format, channelMask);
887        return 0;
888    }
889
890    if (profile->mModule->mHandle == 0) {
891        ALOGE("getInput(): HW module %s not opened", profile->mModule->mName);
892        return 0;
893    }
894
895    AudioInputDescriptor *inputDesc = new AudioInputDescriptor(profile);
896
897    inputDesc->mInputSource = inputSource;
898    inputDesc->mDevice = device;
899    inputDesc->mSamplingRate = samplingRate;
900    inputDesc->mFormat = (audio_format_t)format;
901    inputDesc->mChannelMask = (audio_channel_mask_t)channelMask;
902    inputDesc->mRefCount = 0;
903    input = mpClientInterface->openInput(profile->mModule->mHandle,
904                                    &inputDesc->mDevice,
905                                    &inputDesc->mSamplingRate,
906                                    &inputDesc->mFormat,
907                                    &inputDesc->mChannelMask);
908
909    // only accept input with the exact requested set of parameters
910    if (input == 0 ||
911        (samplingRate != inputDesc->mSamplingRate) ||
912        (format != inputDesc->mFormat) ||
913        (channelMask != inputDesc->mChannelMask)) {
914        ALOGV("getInput() failed opening input: samplingRate %d, format %d, channelMask %d",
915                samplingRate, format, channelMask);
916        if (input != 0) {
917            mpClientInterface->closeInput(input);
918        }
919        delete inputDesc;
920        return 0;
921    }
922    mInputs.add(input, inputDesc);
923    return input;
924}
925
926status_t AudioPolicyManagerBase::startInput(audio_io_handle_t input)
927{
928    ALOGV("startInput() input %d", input);
929    ssize_t index = mInputs.indexOfKey(input);
930    if (index < 0) {
931        ALOGW("startInput() unknow input %d", input);
932        return BAD_VALUE;
933    }
934    AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
935
936#ifdef AUDIO_POLICY_TEST
937    if (mTestInput == 0)
938#endif //AUDIO_POLICY_TEST
939    {
940        // refuse 2 active AudioRecord clients at the same time
941        if (getActiveInput() != 0) {
942            ALOGW("startInput() input %d failed: other input already started", input);
943            return INVALID_OPERATION;
944        }
945    }
946
947    audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
948    if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
949        inputDesc->mDevice = newDevice;
950    }
951    AudioParameter param = AudioParameter();
952    param.addInt(String8(AudioParameter::keyRouting), (int)inputDesc->mDevice);
953
954    param.addInt(String8(AudioParameter::keyInputSource), (int)inputDesc->mInputSource);
955    ALOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource);
956
957    mpClientInterface->setParameters(input, param.toString());
958
959    inputDesc->mRefCount = 1;
960    return NO_ERROR;
961}
962
963status_t AudioPolicyManagerBase::stopInput(audio_io_handle_t input)
964{
965    ALOGV("stopInput() input %d", input);
966    ssize_t index = mInputs.indexOfKey(input);
967    if (index < 0) {
968        ALOGW("stopInput() unknow input %d", input);
969        return BAD_VALUE;
970    }
971    AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
972
973    if (inputDesc->mRefCount == 0) {
974        ALOGW("stopInput() input %d already stopped", input);
975        return INVALID_OPERATION;
976    } else {
977        AudioParameter param = AudioParameter();
978        param.addInt(String8(AudioParameter::keyRouting), 0);
979        mpClientInterface->setParameters(input, param.toString());
980        inputDesc->mRefCount = 0;
981        return NO_ERROR;
982    }
983}
984
985void AudioPolicyManagerBase::releaseInput(audio_io_handle_t input)
986{
987    ALOGV("releaseInput() %d", input);
988    ssize_t index = mInputs.indexOfKey(input);
989    if (index < 0) {
990        ALOGW("releaseInput() releasing unknown input %d", input);
991        return;
992    }
993    mpClientInterface->closeInput(input);
994    delete mInputs.valueAt(index);
995    mInputs.removeItem(input);
996    ALOGV("releaseInput() exit");
997}
998
999void AudioPolicyManagerBase::initStreamVolume(AudioSystem::stream_type stream,
1000                                            int indexMin,
1001                                            int indexMax)
1002{
1003    ALOGV("initStreamVolume() stream %d, min %d, max %d", stream , indexMin, indexMax);
1004    if (indexMin < 0 || indexMin >= indexMax) {
1005        ALOGW("initStreamVolume() invalid index limits for stream %d, min %d, max %d", stream , indexMin, indexMax);
1006        return;
1007    }
1008    mStreams[stream].mIndexMin = indexMin;
1009    mStreams[stream].mIndexMax = indexMax;
1010}
1011
1012status_t AudioPolicyManagerBase::setStreamVolumeIndex(AudioSystem::stream_type stream,
1013                                                      int index,
1014                                                      audio_devices_t device)
1015{
1016
1017    if ((index < mStreams[stream].mIndexMin) || (index > mStreams[stream].mIndexMax)) {
1018        return BAD_VALUE;
1019    }
1020    if (!audio_is_output_device(device)) {
1021        return BAD_VALUE;
1022    }
1023
1024    // Force max volume if stream cannot be muted
1025    if (!mStreams[stream].mCanBeMuted) index = mStreams[stream].mIndexMax;
1026
1027    ALOGV("setStreamVolumeIndex() stream %d, device %04x, index %d",
1028          stream, device, index);
1029
1030    // if device is AUDIO_DEVICE_OUT_DEFAULT set default value and
1031    // clear all device specific values
1032    if (device == AUDIO_DEVICE_OUT_DEFAULT) {
1033        mStreams[stream].mIndexCur.clear();
1034    }
1035    mStreams[stream].mIndexCur.add(device, index);
1036
1037    // compute and apply stream volume on all outputs according to connected device
1038    status_t status = NO_ERROR;
1039    for (size_t i = 0; i < mOutputs.size(); i++) {
1040        audio_devices_t curDevice =
1041                getDeviceForVolume(mOutputs.valueAt(i)->device());
1042        if ((device == AUDIO_DEVICE_OUT_DEFAULT) || (device == curDevice)) {
1043            status_t volStatus = checkAndSetVolume(stream, index, mOutputs.keyAt(i), curDevice);
1044            if (volStatus != NO_ERROR) {
1045                status = volStatus;
1046            }
1047        }
1048    }
1049    return status;
1050}
1051
1052status_t AudioPolicyManagerBase::getStreamVolumeIndex(AudioSystem::stream_type stream,
1053                                                      int *index,
1054                                                      audio_devices_t device)
1055{
1056    if (index == NULL) {
1057        return BAD_VALUE;
1058    }
1059    if (!audio_is_output_device(device)) {
1060        return BAD_VALUE;
1061    }
1062    // if device is AUDIO_DEVICE_OUT_DEFAULT, return volume for device corresponding to
1063    // the strategy the stream belongs to.
1064    if (device == AUDIO_DEVICE_OUT_DEFAULT) {
1065        device = getDeviceForStrategy(getStrategy(stream), true /*fromCache*/);
1066    }
1067    device = getDeviceForVolume(device);
1068
1069    *index =  mStreams[stream].getVolumeIndex(device);
1070    ALOGV("getStreamVolumeIndex() stream %d device %08x index %d", stream, device, *index);
1071    return NO_ERROR;
1072}
1073
1074audio_io_handle_t AudioPolicyManagerBase::getOutputForEffect(const effect_descriptor_t *desc)
1075{
1076    ALOGV("getOutputForEffect()");
1077    // apply simple rule where global effects are attached to the same output as MUSIC streams
1078
1079    routing_strategy strategy = getStrategy(AudioSystem::MUSIC);
1080    audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/);
1081    SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(device, mOutputs);
1082    int outIdx = 0;
1083    for (size_t i = 0; i < dstOutputs.size(); i++) {
1084        AudioOutputDescriptor *desc = mOutputs.valueFor(dstOutputs[i]);
1085        if (desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) {
1086            outIdx = i;
1087        }
1088    }
1089    return dstOutputs[outIdx];
1090}
1091
1092status_t AudioPolicyManagerBase::registerEffect(const effect_descriptor_t *desc,
1093                                audio_io_handle_t io,
1094                                uint32_t strategy,
1095                                int session,
1096                                int id)
1097{
1098    ssize_t index = mOutputs.indexOfKey(io);
1099    if (index < 0) {
1100        index = mInputs.indexOfKey(io);
1101        if (index < 0) {
1102            ALOGW("registerEffect() unknown io %d", io);
1103            return INVALID_OPERATION;
1104        }
1105    }
1106
1107    if (mTotalEffectsMemory + desc->memoryUsage > getMaxEffectsMemory()) {
1108        ALOGW("registerEffect() memory limit exceeded for Fx %s, Memory %d KB",
1109                desc->name, desc->memoryUsage);
1110        return INVALID_OPERATION;
1111    }
1112    mTotalEffectsMemory += desc->memoryUsage;
1113    ALOGV("registerEffect() effect %s, io %d, strategy %d session %d id %d",
1114            desc->name, io, strategy, session, id);
1115    ALOGV("registerEffect() memory %d, total memory %d", desc->memoryUsage, mTotalEffectsMemory);
1116
1117    EffectDescriptor *pDesc = new EffectDescriptor();
1118    memcpy (&pDesc->mDesc, desc, sizeof(effect_descriptor_t));
1119    pDesc->mIo = io;
1120    pDesc->mStrategy = (routing_strategy)strategy;
1121    pDesc->mSession = session;
1122    pDesc->mEnabled = false;
1123
1124    mEffects.add(id, pDesc);
1125
1126    return NO_ERROR;
1127}
1128
1129status_t AudioPolicyManagerBase::unregisterEffect(int id)
1130{
1131    ssize_t index = mEffects.indexOfKey(id);
1132    if (index < 0) {
1133        ALOGW("unregisterEffect() unknown effect ID %d", id);
1134        return INVALID_OPERATION;
1135    }
1136
1137    EffectDescriptor *pDesc = mEffects.valueAt(index);
1138
1139    setEffectEnabled(pDesc, false);
1140
1141    if (mTotalEffectsMemory < pDesc->mDesc.memoryUsage) {
1142        ALOGW("unregisterEffect() memory %d too big for total %d",
1143                pDesc->mDesc.memoryUsage, mTotalEffectsMemory);
1144        pDesc->mDesc.memoryUsage = mTotalEffectsMemory;
1145    }
1146    mTotalEffectsMemory -= pDesc->mDesc.memoryUsage;
1147    ALOGV("unregisterEffect() effect %s, ID %d, memory %d total memory %d",
1148            pDesc->mDesc.name, id, pDesc->mDesc.memoryUsage, mTotalEffectsMemory);
1149
1150    mEffects.removeItem(id);
1151    delete pDesc;
1152
1153    return NO_ERROR;
1154}
1155
1156status_t AudioPolicyManagerBase::setEffectEnabled(int id, bool enabled)
1157{
1158    ssize_t index = mEffects.indexOfKey(id);
1159    if (index < 0) {
1160        ALOGW("unregisterEffect() unknown effect ID %d", id);
1161        return INVALID_OPERATION;
1162    }
1163
1164    return setEffectEnabled(mEffects.valueAt(index), enabled);
1165}
1166
1167status_t AudioPolicyManagerBase::setEffectEnabled(EffectDescriptor *pDesc, bool enabled)
1168{
1169    if (enabled == pDesc->mEnabled) {
1170        ALOGV("setEffectEnabled(%s) effect already %s",
1171             enabled?"true":"false", enabled?"enabled":"disabled");
1172        return INVALID_OPERATION;
1173    }
1174
1175    if (enabled) {
1176        if (mTotalEffectsCpuLoad + pDesc->mDesc.cpuLoad > getMaxEffectsCpuLoad()) {
1177            ALOGW("setEffectEnabled(true) CPU Load limit exceeded for Fx %s, CPU %f MIPS",
1178                 pDesc->mDesc.name, (float)pDesc->mDesc.cpuLoad/10);
1179            return INVALID_OPERATION;
1180        }
1181        mTotalEffectsCpuLoad += pDesc->mDesc.cpuLoad;
1182        ALOGV("setEffectEnabled(true) total CPU %d", mTotalEffectsCpuLoad);
1183    } else {
1184        if (mTotalEffectsCpuLoad < pDesc->mDesc.cpuLoad) {
1185            ALOGW("setEffectEnabled(false) CPU load %d too high for total %d",
1186                    pDesc->mDesc.cpuLoad, mTotalEffectsCpuLoad);
1187            pDesc->mDesc.cpuLoad = mTotalEffectsCpuLoad;
1188        }
1189        mTotalEffectsCpuLoad -= pDesc->mDesc.cpuLoad;
1190        ALOGV("setEffectEnabled(false) total CPU %d", mTotalEffectsCpuLoad);
1191    }
1192    pDesc->mEnabled = enabled;
1193    return NO_ERROR;
1194}
1195
1196bool AudioPolicyManagerBase::isStreamActive(int stream, uint32_t inPastMs) const
1197{
1198    nsecs_t sysTime = systemTime();
1199    for (size_t i = 0; i < mOutputs.size(); i++) {
1200        const AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
1201        if (outputDesc->isStreamActive((AudioSystem::stream_type)stream, inPastMs, sysTime)) {
1202            return true;
1203        }
1204    }
1205    return false;
1206}
1207
1208bool AudioPolicyManagerBase::isStreamActiveRemotely(int stream, uint32_t inPastMs) const
1209{
1210    nsecs_t sysTime = systemTime();
1211    for (size_t i = 0; i < mOutputs.size(); i++) {
1212        const AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
1213        if (((outputDesc->device() & APM_AUDIO_OUT_DEVICE_REMOTE_ALL) != 0) &&
1214                outputDesc->isStreamActive((AudioSystem::stream_type)stream, inPastMs, sysTime)) {
1215            return true;
1216        }
1217    }
1218    return false;
1219}
1220
1221bool AudioPolicyManagerBase::isSourceActive(audio_source_t source) const
1222{
1223    for (size_t i = 0; i < mInputs.size(); i++) {
1224        const AudioInputDescriptor * inputDescriptor = mInputs.valueAt(i);
1225        if ((inputDescriptor->mInputSource == (int) source)
1226                && (inputDescriptor->mRefCount > 0)) {
1227            return true;
1228        }
1229    }
1230    return false;
1231}
1232
1233
1234
1235status_t AudioPolicyManagerBase::dump(int fd)
1236{
1237    const size_t SIZE = 256;
1238    char buffer[SIZE];
1239    String8 result;
1240
1241    snprintf(buffer, SIZE, "\nAudioPolicyManager Dump: %p\n", this);
1242    result.append(buffer);
1243
1244    snprintf(buffer, SIZE, " Primary Output: %d\n", mPrimaryOutput);
1245    result.append(buffer);
1246    snprintf(buffer, SIZE, " A2DP device address: %s\n", mA2dpDeviceAddress.string());
1247    result.append(buffer);
1248    snprintf(buffer, SIZE, " SCO device address: %s\n", mScoDeviceAddress.string());
1249    result.append(buffer);
1250    snprintf(buffer, SIZE, " USB audio ALSA %s\n", mUsbCardAndDevice.string());
1251    result.append(buffer);
1252    snprintf(buffer, SIZE, " Output devices: %08x\n", mAvailableOutputDevices);
1253    result.append(buffer);
1254    snprintf(buffer, SIZE, " Input devices: %08x\n", mAvailableInputDevices);
1255    result.append(buffer);
1256    snprintf(buffer, SIZE, " Phone state: %d\n", mPhoneState);
1257    result.append(buffer);
1258    snprintf(buffer, SIZE, " Force use for communications %d\n", mForceUse[AudioSystem::FOR_COMMUNICATION]);
1259    result.append(buffer);
1260    snprintf(buffer, SIZE, " Force use for media %d\n", mForceUse[AudioSystem::FOR_MEDIA]);
1261    result.append(buffer);
1262    snprintf(buffer, SIZE, " Force use for record %d\n", mForceUse[AudioSystem::FOR_RECORD]);
1263    result.append(buffer);
1264    snprintf(buffer, SIZE, " Force use for dock %d\n", mForceUse[AudioSystem::FOR_DOCK]);
1265    result.append(buffer);
1266    snprintf(buffer, SIZE, " Force use for system %d\n", mForceUse[AudioSystem::FOR_SYSTEM]);
1267    result.append(buffer);
1268    write(fd, result.string(), result.size());
1269
1270
1271    snprintf(buffer, SIZE, "\nHW Modules dump:\n");
1272    write(fd, buffer, strlen(buffer));
1273    for (size_t i = 0; i < mHwModules.size(); i++) {
1274        snprintf(buffer, SIZE, "- HW Module %d:\n", i + 1);
1275        write(fd, buffer, strlen(buffer));
1276        mHwModules[i]->dump(fd);
1277    }
1278
1279    snprintf(buffer, SIZE, "\nOutputs dump:\n");
1280    write(fd, buffer, strlen(buffer));
1281    for (size_t i = 0; i < mOutputs.size(); i++) {
1282        snprintf(buffer, SIZE, "- Output %d dump:\n", mOutputs.keyAt(i));
1283        write(fd, buffer, strlen(buffer));
1284        mOutputs.valueAt(i)->dump(fd);
1285    }
1286
1287    snprintf(buffer, SIZE, "\nInputs dump:\n");
1288    write(fd, buffer, strlen(buffer));
1289    for (size_t i = 0; i < mInputs.size(); i++) {
1290        snprintf(buffer, SIZE, "- Input %d dump:\n", mInputs.keyAt(i));
1291        write(fd, buffer, strlen(buffer));
1292        mInputs.valueAt(i)->dump(fd);
1293    }
1294
1295    snprintf(buffer, SIZE, "\nStreams dump:\n");
1296    write(fd, buffer, strlen(buffer));
1297    snprintf(buffer, SIZE,
1298             " Stream  Can be muted  Index Min  Index Max  Index Cur [device : index]...\n");
1299    write(fd, buffer, strlen(buffer));
1300    for (size_t i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
1301        snprintf(buffer, SIZE, " %02d      ", i);
1302        write(fd, buffer, strlen(buffer));
1303        mStreams[i].dump(fd);
1304    }
1305
1306    snprintf(buffer, SIZE, "\nTotal Effects CPU: %f MIPS, Total Effects memory: %d KB\n",
1307            (float)mTotalEffectsCpuLoad/10, mTotalEffectsMemory);
1308    write(fd, buffer, strlen(buffer));
1309
1310    snprintf(buffer, SIZE, "Registered effects:\n");
1311    write(fd, buffer, strlen(buffer));
1312    for (size_t i = 0; i < mEffects.size(); i++) {
1313        snprintf(buffer, SIZE, "- Effect %d dump:\n", mEffects.keyAt(i));
1314        write(fd, buffer, strlen(buffer));
1315        mEffects.valueAt(i)->dump(fd);
1316    }
1317
1318
1319    return NO_ERROR;
1320}
1321
1322bool AudioPolicyManagerBase::isOffloadSupported(const audio_offload_info_t& offloadInfo)
1323{
1324    // Stub implementation
1325    return false;
1326}
1327
1328// ----------------------------------------------------------------------------
1329// AudioPolicyManagerBase
1330// ----------------------------------------------------------------------------
1331
1332AudioPolicyManagerBase::AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface)
1333    :
1334#ifdef AUDIO_POLICY_TEST
1335    Thread(false),
1336#endif //AUDIO_POLICY_TEST
1337    mPrimaryOutput((audio_io_handle_t)0),
1338    mAvailableOutputDevices(AUDIO_DEVICE_NONE),
1339    mPhoneState(AudioSystem::MODE_NORMAL),
1340    mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f),
1341    mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0),
1342    mA2dpSuspended(false), mHasA2dp(false), mHasUsb(false), mHasRemoteSubmix(false)
1343{
1344    mpClientInterface = clientInterface;
1345
1346    for (int i = 0; i < AudioSystem::NUM_FORCE_USE; i++) {
1347        mForceUse[i] = AudioSystem::FORCE_NONE;
1348    }
1349
1350    initializeVolumeCurves();
1351
1352    mA2dpDeviceAddress = String8("");
1353    mScoDeviceAddress = String8("");
1354    mUsbCardAndDevice = String8("");
1355
1356    if (loadAudioPolicyConfig(AUDIO_POLICY_VENDOR_CONFIG_FILE) != NO_ERROR) {
1357        if (loadAudioPolicyConfig(AUDIO_POLICY_CONFIG_FILE) != NO_ERROR) {
1358            ALOGE("could not load audio policy configuration file, setting defaults");
1359            defaultAudioPolicyConfig();
1360        }
1361    }
1362
1363    // open all output streams needed to access attached devices
1364    for (size_t i = 0; i < mHwModules.size(); i++) {
1365        mHwModules[i]->mHandle = mpClientInterface->loadHwModule(mHwModules[i]->mName);
1366        if (mHwModules[i]->mHandle == 0) {
1367            ALOGW("could not open HW module %s", mHwModules[i]->mName);
1368            continue;
1369        }
1370        // open all output streams needed to access attached devices
1371        for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
1372        {
1373            const IOProfile *outProfile = mHwModules[i]->mOutputProfiles[j];
1374
1375            if (outProfile->mSupportedDevices & mAttachedOutputDevices) {
1376                AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(outProfile);
1377                outputDesc->mDevice = (audio_devices_t)(mDefaultOutputDevice &
1378                                                            outProfile->mSupportedDevices);
1379                audio_io_handle_t output = mpClientInterface->openOutput(
1380                                                outProfile->mModule->mHandle,
1381                                                &outputDesc->mDevice,
1382                                                &outputDesc->mSamplingRate,
1383                                                &outputDesc->mFormat,
1384                                                &outputDesc->mChannelMask,
1385                                                &outputDesc->mLatency,
1386                                                outputDesc->mFlags);
1387                if (output == 0) {
1388                    delete outputDesc;
1389                } else {
1390                    mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices |
1391                                            (outProfile->mSupportedDevices & mAttachedOutputDevices));
1392                    if (mPrimaryOutput == 0 &&
1393                            outProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) {
1394                        mPrimaryOutput = output;
1395                    }
1396                    addOutput(output, outputDesc);
1397                    setOutputDevice(output,
1398                                    (audio_devices_t)(mDefaultOutputDevice &
1399                                                        outProfile->mSupportedDevices),
1400                                    true);
1401                }
1402            }
1403        }
1404    }
1405
1406    ALOGE_IF((mAttachedOutputDevices & ~mAvailableOutputDevices),
1407             "Not output found for attached devices %08x",
1408             (mAttachedOutputDevices & ~mAvailableOutputDevices));
1409
1410    ALOGE_IF((mPrimaryOutput == 0), "Failed to open primary output");
1411
1412    updateDevicesAndOutputs();
1413
1414#ifdef AUDIO_POLICY_TEST
1415    if (mPrimaryOutput != 0) {
1416        AudioParameter outputCmd = AudioParameter();
1417        outputCmd.addInt(String8("set_id"), 0);
1418        mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString());
1419
1420        mTestDevice = AUDIO_DEVICE_OUT_SPEAKER;
1421        mTestSamplingRate = 44100;
1422        mTestFormat = AudioSystem::PCM_16_BIT;
1423        mTestChannels =  AudioSystem::CHANNEL_OUT_STEREO;
1424        mTestLatencyMs = 0;
1425        mCurOutput = 0;
1426        mDirectOutput = false;
1427        for (int i = 0; i < NUM_TEST_OUTPUTS; i++) {
1428            mTestOutputs[i] = 0;
1429        }
1430
1431        const size_t SIZE = 256;
1432        char buffer[SIZE];
1433        snprintf(buffer, SIZE, "AudioPolicyManagerTest");
1434        run(buffer, ANDROID_PRIORITY_AUDIO);
1435    }
1436#endif //AUDIO_POLICY_TEST
1437}
1438
1439AudioPolicyManagerBase::~AudioPolicyManagerBase()
1440{
1441#ifdef AUDIO_POLICY_TEST
1442    exit();
1443#endif //AUDIO_POLICY_TEST
1444   for (size_t i = 0; i < mOutputs.size(); i++) {
1445        mpClientInterface->closeOutput(mOutputs.keyAt(i));
1446        delete mOutputs.valueAt(i);
1447   }
1448   for (size_t i = 0; i < mInputs.size(); i++) {
1449        mpClientInterface->closeInput(mInputs.keyAt(i));
1450        delete mInputs.valueAt(i);
1451   }
1452   for (size_t i = 0; i < mHwModules.size(); i++) {
1453        delete mHwModules[i];
1454   }
1455}
1456
1457status_t AudioPolicyManagerBase::initCheck()
1458{
1459    return (mPrimaryOutput == 0) ? NO_INIT : NO_ERROR;
1460}
1461
1462#ifdef AUDIO_POLICY_TEST
1463bool AudioPolicyManagerBase::threadLoop()
1464{
1465    ALOGV("entering threadLoop()");
1466    while (!exitPending())
1467    {
1468        String8 command;
1469        int valueInt;
1470        String8 value;
1471
1472        Mutex::Autolock _l(mLock);
1473        mWaitWorkCV.waitRelative(mLock, milliseconds(50));
1474
1475        command = mpClientInterface->getParameters(0, String8("test_cmd_policy"));
1476        AudioParameter param = AudioParameter(command);
1477
1478        if (param.getInt(String8("test_cmd_policy"), valueInt) == NO_ERROR &&
1479            valueInt != 0) {
1480            ALOGV("Test command %s received", command.string());
1481            String8 target;
1482            if (param.get(String8("target"), target) != NO_ERROR) {
1483                target = "Manager";
1484            }
1485            if (param.getInt(String8("test_cmd_policy_output"), valueInt) == NO_ERROR) {
1486                param.remove(String8("test_cmd_policy_output"));
1487                mCurOutput = valueInt;
1488            }
1489            if (param.get(String8("test_cmd_policy_direct"), value) == NO_ERROR) {
1490                param.remove(String8("test_cmd_policy_direct"));
1491                if (value == "false") {
1492                    mDirectOutput = false;
1493                } else if (value == "true") {
1494                    mDirectOutput = true;
1495                }
1496            }
1497            if (param.getInt(String8("test_cmd_policy_input"), valueInt) == NO_ERROR) {
1498                param.remove(String8("test_cmd_policy_input"));
1499                mTestInput = valueInt;
1500            }
1501
1502            if (param.get(String8("test_cmd_policy_format"), value) == NO_ERROR) {
1503                param.remove(String8("test_cmd_policy_format"));
1504                int format = AudioSystem::INVALID_FORMAT;
1505                if (value == "PCM 16 bits") {
1506                    format = AudioSystem::PCM_16_BIT;
1507                } else if (value == "PCM 8 bits") {
1508                    format = AudioSystem::PCM_8_BIT;
1509                } else if (value == "Compressed MP3") {
1510                    format = AudioSystem::MP3;
1511                }
1512                if (format != AudioSystem::INVALID_FORMAT) {
1513                    if (target == "Manager") {
1514                        mTestFormat = format;
1515                    } else if (mTestOutputs[mCurOutput] != 0) {
1516                        AudioParameter outputParam = AudioParameter();
1517                        outputParam.addInt(String8("format"), format);
1518                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1519                    }
1520                }
1521            }
1522            if (param.get(String8("test_cmd_policy_channels"), value) == NO_ERROR) {
1523                param.remove(String8("test_cmd_policy_channels"));
1524                int channels = 0;
1525
1526                if (value == "Channels Stereo") {
1527                    channels =  AudioSystem::CHANNEL_OUT_STEREO;
1528                } else if (value == "Channels Mono") {
1529                    channels =  AudioSystem::CHANNEL_OUT_MONO;
1530                }
1531                if (channels != 0) {
1532                    if (target == "Manager") {
1533                        mTestChannels = channels;
1534                    } else if (mTestOutputs[mCurOutput] != 0) {
1535                        AudioParameter outputParam = AudioParameter();
1536                        outputParam.addInt(String8("channels"), channels);
1537                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1538                    }
1539                }
1540            }
1541            if (param.getInt(String8("test_cmd_policy_sampleRate"), valueInt) == NO_ERROR) {
1542                param.remove(String8("test_cmd_policy_sampleRate"));
1543                if (valueInt >= 0 && valueInt <= 96000) {
1544                    int samplingRate = valueInt;
1545                    if (target == "Manager") {
1546                        mTestSamplingRate = samplingRate;
1547                    } else if (mTestOutputs[mCurOutput] != 0) {
1548                        AudioParameter outputParam = AudioParameter();
1549                        outputParam.addInt(String8("sampling_rate"), samplingRate);
1550                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1551                    }
1552                }
1553            }
1554
1555            if (param.get(String8("test_cmd_policy_reopen"), value) == NO_ERROR) {
1556                param.remove(String8("test_cmd_policy_reopen"));
1557
1558                AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mPrimaryOutput);
1559                mpClientInterface->closeOutput(mPrimaryOutput);
1560
1561                audio_module_handle_t moduleHandle = outputDesc->mModule->mHandle;
1562
1563                delete mOutputs.valueFor(mPrimaryOutput);
1564                mOutputs.removeItem(mPrimaryOutput);
1565
1566                AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL);
1567                outputDesc->mDevice = AUDIO_DEVICE_OUT_SPEAKER;
1568                mPrimaryOutput = mpClientInterface->openOutput(moduleHandle,
1569                                                &outputDesc->mDevice,
1570                                                &outputDesc->mSamplingRate,
1571                                                &outputDesc->mFormat,
1572                                                &outputDesc->mChannelMask,
1573                                                &outputDesc->mLatency,
1574                                                outputDesc->mFlags);
1575                if (mPrimaryOutput == 0) {
1576                    ALOGE("Failed to reopen hardware output stream, samplingRate: %d, format %d, channels %d",
1577                            outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannelMask);
1578                } else {
1579                    AudioParameter outputCmd = AudioParameter();
1580                    outputCmd.addInt(String8("set_id"), 0);
1581                    mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString());
1582                    addOutput(mPrimaryOutput, outputDesc);
1583                }
1584            }
1585
1586
1587            mpClientInterface->setParameters(0, String8("test_cmd_policy="));
1588        }
1589    }
1590    return false;
1591}
1592
1593void AudioPolicyManagerBase::exit()
1594{
1595    {
1596        AutoMutex _l(mLock);
1597        requestExit();
1598        mWaitWorkCV.signal();
1599    }
1600    requestExitAndWait();
1601}
1602
1603int AudioPolicyManagerBase::testOutputIndex(audio_io_handle_t output)
1604{
1605    for (int i = 0; i < NUM_TEST_OUTPUTS; i++) {
1606        if (output == mTestOutputs[i]) return i;
1607    }
1608    return 0;
1609}
1610#endif //AUDIO_POLICY_TEST
1611
1612// ---
1613
1614void AudioPolicyManagerBase::addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc)
1615{
1616    outputDesc->mId = id;
1617    mOutputs.add(id, outputDesc);
1618}
1619
1620
1621status_t AudioPolicyManagerBase::checkOutputsForDevice(audio_devices_t device,
1622                                                       AudioSystem::device_connection_state state,
1623                                                       SortedVector<audio_io_handle_t>& outputs)
1624{
1625    AudioOutputDescriptor *desc;
1626
1627    if (state == AudioSystem::DEVICE_STATE_AVAILABLE) {
1628        // first list already open outputs that can be routed to this device
1629        for (size_t i = 0; i < mOutputs.size(); i++) {
1630            desc = mOutputs.valueAt(i);
1631            if (!desc->isDuplicated() && (desc->mProfile->mSupportedDevices & device)) {
1632                ALOGV("checkOutputsForDevice(): adding opened output %d", mOutputs.keyAt(i));
1633                outputs.add(mOutputs.keyAt(i));
1634            }
1635        }
1636        // then look for output profiles that can be routed to this device
1637        SortedVector<IOProfile *> profiles;
1638        for (size_t i = 0; i < mHwModules.size(); i++)
1639        {
1640            if (mHwModules[i]->mHandle == 0) {
1641                continue;
1642            }
1643            for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
1644            {
1645                if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices & device) {
1646                    ALOGV("checkOutputsForDevice(): adding profile %d from module %d", j, i);
1647                    profiles.add(mHwModules[i]->mOutputProfiles[j]);
1648                }
1649            }
1650        }
1651
1652        if (profiles.isEmpty() && outputs.isEmpty()) {
1653            ALOGW("checkOutputsForDevice(): No output available for device %04x", device);
1654            return BAD_VALUE;
1655        }
1656
1657        // open outputs for matching profiles if needed. Direct outputs are also opened to
1658        // query for dynamic parameters and will be closed later by setDeviceConnectionState()
1659        for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) {
1660            IOProfile *profile = profiles[profile_index];
1661
1662            // nothing to do if one output is already opened for this profile
1663            size_t j;
1664            for (j = 0; j < mOutputs.size(); j++) {
1665                desc = mOutputs.valueAt(j);
1666                if (!desc->isDuplicated() && desc->mProfile == profile) {
1667                    break;
1668                }
1669            }
1670            if (j != mOutputs.size()) {
1671                continue;
1672            }
1673
1674            ALOGV("opening output for device %08x", device);
1675            desc = new AudioOutputDescriptor(profile);
1676            desc->mDevice = device;
1677            audio_io_handle_t output = mpClientInterface->openOutput(profile->mModule->mHandle,
1678                                                                       &desc->mDevice,
1679                                                                       &desc->mSamplingRate,
1680                                                                       &desc->mFormat,
1681                                                                       &desc->mChannelMask,
1682                                                                       &desc->mLatency,
1683                                                                       desc->mFlags);
1684            if (output != 0) {
1685                if (desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) {
1686                    String8 reply;
1687                    char *value;
1688                    if (profile->mSamplingRates[0] == 0) {
1689                        reply = mpClientInterface->getParameters(output,
1690                                                String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES));
1691                        ALOGV("checkOutputsForDevice() direct output sup sampling rates %s",
1692                                  reply.string());
1693                        value = strpbrk((char *)reply.string(), "=");
1694                        if (value != NULL) {
1695                            loadSamplingRates(value + 1, profile);
1696                        }
1697                    }
1698                    if (profile->mFormats[0] == 0) {
1699                        reply = mpClientInterface->getParameters(output,
1700                                                       String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS));
1701                        ALOGV("checkOutputsForDevice() direct output sup formats %s",
1702                                  reply.string());
1703                        value = strpbrk((char *)reply.string(), "=");
1704                        if (value != NULL) {
1705                            loadFormats(value + 1, profile);
1706                        }
1707                    }
1708                    if (profile->mChannelMasks[0] == 0) {
1709                        reply = mpClientInterface->getParameters(output,
1710                                                      String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS));
1711                        ALOGV("checkOutputsForDevice() direct output sup channel masks %s",
1712                                  reply.string());
1713                        value = strpbrk((char *)reply.string(), "=");
1714                        if (value != NULL) {
1715                            loadOutChannels(value + 1, profile);
1716                        }
1717                    }
1718                    if (((profile->mSamplingRates[0] == 0) &&
1719                             (profile->mSamplingRates.size() < 2)) ||
1720                         ((profile->mFormats[0] == 0) &&
1721                             (profile->mFormats.size() < 2)) ||
1722                         ((profile->mFormats[0] == 0) &&
1723                             (profile->mChannelMasks.size() < 2))) {
1724                        ALOGW("checkOutputsForDevice() direct output missing param");
1725                        mpClientInterface->closeOutput(output);
1726                        output = 0;
1727                    } else {
1728                        addOutput(output, desc);
1729                    }
1730                } else {
1731                    audio_io_handle_t duplicatedOutput = 0;
1732                    // add output descriptor
1733                    addOutput(output, desc);
1734                    // set initial stream volume for device
1735                    applyStreamVolumes(output, device, 0, true);
1736
1737                    //TODO: configure audio effect output stage here
1738
1739                    // open a duplicating output thread for the new output and the primary output
1740                    duplicatedOutput = mpClientInterface->openDuplicateOutput(output,
1741                                                                              mPrimaryOutput);
1742                    if (duplicatedOutput != 0) {
1743                        // add duplicated output descriptor
1744                        AudioOutputDescriptor *dupOutputDesc = new AudioOutputDescriptor(NULL);
1745                        dupOutputDesc->mOutput1 = mOutputs.valueFor(mPrimaryOutput);
1746                        dupOutputDesc->mOutput2 = mOutputs.valueFor(output);
1747                        dupOutputDesc->mSamplingRate = desc->mSamplingRate;
1748                        dupOutputDesc->mFormat = desc->mFormat;
1749                        dupOutputDesc->mChannelMask = desc->mChannelMask;
1750                        dupOutputDesc->mLatency = desc->mLatency;
1751                        addOutput(duplicatedOutput, dupOutputDesc);
1752                        applyStreamVolumes(duplicatedOutput, device, 0, true);
1753                    } else {
1754                        ALOGW("checkOutputsForDevice() could not open dup output for %d and %d",
1755                                mPrimaryOutput, output);
1756                        mpClientInterface->closeOutput(output);
1757                        mOutputs.removeItem(output);
1758                        output = 0;
1759                    }
1760                }
1761            }
1762            if (output == 0) {
1763                ALOGW("checkOutputsForDevice() could not open output for device %x", device);
1764                delete desc;
1765                profiles.removeAt(profile_index);
1766                profile_index--;
1767            } else {
1768                outputs.add(output);
1769                ALOGV("checkOutputsForDevice(): adding output %d", output);
1770            }
1771        }
1772
1773        if (profiles.isEmpty()) {
1774            ALOGW("checkOutputsForDevice(): No output available for device %04x", device);
1775            return BAD_VALUE;
1776        }
1777    } else {
1778        // check if one opened output is not needed any more after disconnecting one device
1779        for (size_t i = 0; i < mOutputs.size(); i++) {
1780            desc = mOutputs.valueAt(i);
1781            if (!desc->isDuplicated() &&
1782                    !(desc->mProfile->mSupportedDevices & mAvailableOutputDevices)) {
1783                ALOGV("checkOutputsForDevice(): disconnecting adding output %d", mOutputs.keyAt(i));
1784                outputs.add(mOutputs.keyAt(i));
1785            }
1786        }
1787        for (size_t i = 0; i < mHwModules.size(); i++)
1788        {
1789            if (mHwModules[i]->mHandle == 0) {
1790                continue;
1791            }
1792            for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
1793            {
1794                IOProfile *profile = mHwModules[i]->mOutputProfiles[j];
1795                if ((profile->mSupportedDevices & device) &&
1796                        (profile->mFlags & AUDIO_OUTPUT_FLAG_DIRECT)) {
1797                    ALOGV("checkOutputsForDevice(): clearing direct output profile %d on module %d",
1798                          j, i);
1799                    if (profile->mSamplingRates[0] == 0) {
1800                        profile->mSamplingRates.clear();
1801                        profile->mSamplingRates.add(0);
1802                    }
1803                    if (profile->mFormats[0] == 0) {
1804                        profile->mFormats.clear();
1805                        profile->mFormats.add((audio_format_t)0);
1806                    }
1807                    if (profile->mChannelMasks[0] == 0) {
1808                        profile->mChannelMasks.clear();
1809                        profile->mChannelMasks.add((audio_channel_mask_t)0);
1810                    }
1811                }
1812            }
1813        }
1814    }
1815    return NO_ERROR;
1816}
1817
1818void AudioPolicyManagerBase::closeOutput(audio_io_handle_t output)
1819{
1820    ALOGV("closeOutput(%d)", output);
1821
1822    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
1823    if (outputDesc == NULL) {
1824        ALOGW("closeOutput() unknown output %d", output);
1825        return;
1826    }
1827
1828    // look for duplicated outputs connected to the output being removed.
1829    for (size_t i = 0; i < mOutputs.size(); i++) {
1830        AudioOutputDescriptor *dupOutputDesc = mOutputs.valueAt(i);
1831        if (dupOutputDesc->isDuplicated() &&
1832                (dupOutputDesc->mOutput1 == outputDesc ||
1833                dupOutputDesc->mOutput2 == outputDesc)) {
1834            AudioOutputDescriptor *outputDesc2;
1835            if (dupOutputDesc->mOutput1 == outputDesc) {
1836                outputDesc2 = dupOutputDesc->mOutput2;
1837            } else {
1838                outputDesc2 = dupOutputDesc->mOutput1;
1839            }
1840            // As all active tracks on duplicated output will be deleted,
1841            // and as they were also referenced on the other output, the reference
1842            // count for their stream type must be adjusted accordingly on
1843            // the other output.
1844            for (int j = 0; j < (int)AudioSystem::NUM_STREAM_TYPES; j++) {
1845                int refCount = dupOutputDesc->mRefCount[j];
1846                outputDesc2->changeRefCount((AudioSystem::stream_type)j,-refCount);
1847            }
1848            audio_io_handle_t duplicatedOutput = mOutputs.keyAt(i);
1849            ALOGV("closeOutput() closing also duplicated output %d", duplicatedOutput);
1850
1851            mpClientInterface->closeOutput(duplicatedOutput);
1852            delete mOutputs.valueFor(duplicatedOutput);
1853            mOutputs.removeItem(duplicatedOutput);
1854        }
1855    }
1856
1857    AudioParameter param;
1858    param.add(String8("closing"), String8("true"));
1859    mpClientInterface->setParameters(output, param.toString());
1860
1861    mpClientInterface->closeOutput(output);
1862    delete outputDesc;
1863    mOutputs.removeItem(output);
1864    mPreviousOutputs = mOutputs;
1865}
1866
1867SortedVector<audio_io_handle_t> AudioPolicyManagerBase::getOutputsForDevice(audio_devices_t device,
1868                        DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> openOutputs)
1869{
1870    SortedVector<audio_io_handle_t> outputs;
1871
1872    ALOGVV("getOutputsForDevice() device %04x", device);
1873    for (size_t i = 0; i < openOutputs.size(); i++) {
1874        ALOGVV("output %d isDuplicated=%d device=%04x",
1875                i, openOutputs.valueAt(i)->isDuplicated(), openOutputs.valueAt(i)->supportedDevices());
1876        if ((device & openOutputs.valueAt(i)->supportedDevices()) == device) {
1877            ALOGVV("getOutputsForDevice() found output %d", openOutputs.keyAt(i));
1878            outputs.add(openOutputs.keyAt(i));
1879        }
1880    }
1881    return outputs;
1882}
1883
1884bool AudioPolicyManagerBase::vectorsEqual(SortedVector<audio_io_handle_t>& outputs1,
1885                                   SortedVector<audio_io_handle_t>& outputs2)
1886{
1887    if (outputs1.size() != outputs2.size()) {
1888        return false;
1889    }
1890    for (size_t i = 0; i < outputs1.size(); i++) {
1891        if (outputs1[i] != outputs2[i]) {
1892            return false;
1893        }
1894    }
1895    return true;
1896}
1897
1898void AudioPolicyManagerBase::checkOutputForStrategy(routing_strategy strategy)
1899{
1900    audio_devices_t oldDevice = getDeviceForStrategy(strategy, true /*fromCache*/);
1901    audio_devices_t newDevice = getDeviceForStrategy(strategy, false /*fromCache*/);
1902    SortedVector<audio_io_handle_t> srcOutputs = getOutputsForDevice(oldDevice, mPreviousOutputs);
1903    SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(newDevice, mOutputs);
1904
1905    if (!vectorsEqual(srcOutputs,dstOutputs)) {
1906        ALOGV("checkOutputForStrategy() strategy %d, moving from output %d to output %d",
1907              strategy, srcOutputs[0], dstOutputs[0]);
1908        // mute strategy while moving tracks from one output to another
1909        for (size_t i = 0; i < srcOutputs.size(); i++) {
1910            AudioOutputDescriptor *desc = mOutputs.valueFor(srcOutputs[i]);
1911            if (desc->isStrategyActive(strategy)) {
1912                setStrategyMute(strategy, true, srcOutputs[i]);
1913                setStrategyMute(strategy, false, srcOutputs[i], MUTE_TIME_MS, newDevice);
1914            }
1915        }
1916
1917        // Move effects associated to this strategy from previous output to new output
1918        if (strategy == STRATEGY_MEDIA) {
1919            int outIdx = 0;
1920            for (size_t i = 0; i < dstOutputs.size(); i++) {
1921                AudioOutputDescriptor *desc = mOutputs.valueFor(dstOutputs[i]);
1922                if (desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) {
1923                    outIdx = i;
1924                }
1925            }
1926            SortedVector<audio_io_handle_t> moved;
1927            for (size_t i = 0; i < mEffects.size(); i++) {
1928                EffectDescriptor *desc = mEffects.valueAt(i);
1929                if (desc->mSession == AUDIO_SESSION_OUTPUT_MIX &&
1930                        desc->mIo != dstOutputs[outIdx]) {
1931                    if (moved.indexOf(desc->mIo) < 0) {
1932                        ALOGV("checkOutputForStrategy() moving effect %d to output %d",
1933                              mEffects.keyAt(i), dstOutputs[outIdx]);
1934                        mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, desc->mIo,
1935                                                       dstOutputs[outIdx]);
1936                        moved.add(desc->mIo);
1937                    }
1938                    desc->mIo = dstOutputs[outIdx];
1939                }
1940            }
1941        }
1942        // Move tracks associated to this strategy from previous output to new output
1943        for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
1944            if (getStrategy((AudioSystem::stream_type)i) == strategy) {
1945                //FIXME see fixme on name change
1946                mpClientInterface->setStreamOutput((AudioSystem::stream_type)i,
1947                                                   dstOutputs[0] /* ignored */);
1948            }
1949        }
1950    }
1951}
1952
1953void AudioPolicyManagerBase::checkOutputForAllStrategies()
1954{
1955    checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE);
1956    checkOutputForStrategy(STRATEGY_PHONE);
1957    checkOutputForStrategy(STRATEGY_SONIFICATION);
1958    checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL);
1959    checkOutputForStrategy(STRATEGY_MEDIA);
1960    checkOutputForStrategy(STRATEGY_DTMF);
1961}
1962
1963audio_io_handle_t AudioPolicyManagerBase::getA2dpOutput()
1964{
1965    if (!mHasA2dp) {
1966        return 0;
1967    }
1968
1969    for (size_t i = 0; i < mOutputs.size(); i++) {
1970        AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
1971        if (!outputDesc->isDuplicated() && outputDesc->device() & AUDIO_DEVICE_OUT_ALL_A2DP) {
1972            return mOutputs.keyAt(i);
1973        }
1974    }
1975
1976    return 0;
1977}
1978
1979void AudioPolicyManagerBase::checkA2dpSuspend()
1980{
1981    if (!mHasA2dp) {
1982        return;
1983    }
1984    audio_io_handle_t a2dpOutput = getA2dpOutput();
1985    if (a2dpOutput == 0) {
1986        return;
1987    }
1988
1989    // suspend A2DP output if:
1990    //      (NOT already suspended) &&
1991    //      ((SCO device is connected &&
1992    //       (forced usage for communication || for record is SCO))) ||
1993    //      (phone state is ringing || in call)
1994    //
1995    // restore A2DP output if:
1996    //      (Already suspended) &&
1997    //      ((SCO device is NOT connected ||
1998    //       (forced usage NOT for communication && NOT for record is SCO))) &&
1999    //      (phone state is NOT ringing && NOT in call)
2000    //
2001    if (mA2dpSuspended) {
2002        if (((mScoDeviceAddress == "") ||
2003             ((mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO) &&
2004              (mForceUse[AudioSystem::FOR_RECORD] != AudioSystem::FORCE_BT_SCO))) &&
2005             ((mPhoneState != AudioSystem::MODE_IN_CALL) &&
2006              (mPhoneState != AudioSystem::MODE_RINGTONE))) {
2007
2008            mpClientInterface->restoreOutput(a2dpOutput);
2009            mA2dpSuspended = false;
2010        }
2011    } else {
2012        if (((mScoDeviceAddress != "") &&
2013             ((mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) ||
2014              (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO))) ||
2015             ((mPhoneState == AudioSystem::MODE_IN_CALL) ||
2016              (mPhoneState == AudioSystem::MODE_RINGTONE))) {
2017
2018            mpClientInterface->suspendOutput(a2dpOutput);
2019            mA2dpSuspended = true;
2020        }
2021    }
2022}
2023
2024audio_devices_t AudioPolicyManagerBase::getNewDevice(audio_io_handle_t output, bool fromCache)
2025{
2026    audio_devices_t device = AUDIO_DEVICE_NONE;
2027
2028    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2029    // check the following by order of priority to request a routing change if necessary:
2030    // 1: the strategy enforced audible is active on the output:
2031    //      use device for strategy enforced audible
2032    // 2: we are in call or the strategy phone is active on the output:
2033    //      use device for strategy phone
2034    // 3: the strategy sonification is active on the output:
2035    //      use device for strategy sonification
2036    // 4: the strategy "respectful" sonification is active on the output:
2037    //      use device for strategy "respectful" sonification
2038    // 5: the strategy media is active on the output:
2039    //      use device for strategy media
2040    // 6: the strategy DTMF is active on the output:
2041    //      use device for strategy DTMF
2042    if (outputDesc->isStrategyActive(STRATEGY_ENFORCED_AUDIBLE)) {
2043        device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache);
2044    } else if (isInCall() ||
2045                    outputDesc->isStrategyActive(STRATEGY_PHONE)) {
2046        device = getDeviceForStrategy(STRATEGY_PHONE, fromCache);
2047    } else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION)) {
2048        device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache);
2049    } else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION_RESPECTFUL)) {
2050        device = getDeviceForStrategy(STRATEGY_SONIFICATION_RESPECTFUL, fromCache);
2051    } else if (outputDesc->isStrategyActive(STRATEGY_MEDIA)) {
2052        device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache);
2053    } else if (outputDesc->isStrategyActive(STRATEGY_DTMF)) {
2054        device = getDeviceForStrategy(STRATEGY_DTMF, fromCache);
2055    }
2056
2057    ALOGV("getNewDevice() selected device %x", device);
2058    return device;
2059}
2060
2061uint32_t AudioPolicyManagerBase::getStrategyForStream(AudioSystem::stream_type stream) {
2062    return (uint32_t)getStrategy(stream);
2063}
2064
2065audio_devices_t AudioPolicyManagerBase::getDevicesForStream(AudioSystem::stream_type stream) {
2066    audio_devices_t devices;
2067    // By checking the range of stream before calling getStrategy, we avoid
2068    // getStrategy's behavior for invalid streams.  getStrategy would do a ALOGE
2069    // and then return STRATEGY_MEDIA, but we want to return the empty set.
2070    if (stream < (AudioSystem::stream_type) 0 || stream >= AudioSystem::NUM_STREAM_TYPES) {
2071        devices = AUDIO_DEVICE_NONE;
2072    } else {
2073        AudioPolicyManagerBase::routing_strategy strategy = getStrategy(stream);
2074        devices = getDeviceForStrategy(strategy, true /*fromCache*/);
2075    }
2076    return devices;
2077}
2078
2079AudioPolicyManagerBase::routing_strategy AudioPolicyManagerBase::getStrategy(
2080        AudioSystem::stream_type stream) {
2081    // stream to strategy mapping
2082    switch (stream) {
2083    case AudioSystem::VOICE_CALL:
2084    case AudioSystem::BLUETOOTH_SCO:
2085        return STRATEGY_PHONE;
2086    case AudioSystem::RING:
2087    case AudioSystem::ALARM:
2088        return STRATEGY_SONIFICATION;
2089    case AudioSystem::NOTIFICATION:
2090        return STRATEGY_SONIFICATION_RESPECTFUL;
2091    case AudioSystem::DTMF:
2092        return STRATEGY_DTMF;
2093    default:
2094        ALOGE("unknown stream type");
2095    case AudioSystem::SYSTEM:
2096        // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs
2097        // while key clicks are played produces a poor result
2098    case AudioSystem::TTS:
2099    case AudioSystem::MUSIC:
2100        return STRATEGY_MEDIA;
2101    case AudioSystem::ENFORCED_AUDIBLE:
2102        return STRATEGY_ENFORCED_AUDIBLE;
2103    }
2104}
2105
2106void AudioPolicyManagerBase::handleNotificationRoutingForStream(AudioSystem::stream_type stream) {
2107    switch(stream) {
2108    case AudioSystem::MUSIC:
2109        checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL);
2110        updateDevicesAndOutputs();
2111        break;
2112    default:
2113        break;
2114    }
2115}
2116
2117audio_devices_t AudioPolicyManagerBase::getDeviceForStrategy(routing_strategy strategy,
2118                                                             bool fromCache)
2119{
2120    uint32_t device = AUDIO_DEVICE_NONE;
2121
2122    if (fromCache) {
2123        ALOGVV("getDeviceForStrategy() from cache strategy %d, device %x",
2124              strategy, mDeviceForStrategy[strategy]);
2125        return mDeviceForStrategy[strategy];
2126    }
2127
2128    switch (strategy) {
2129
2130    case STRATEGY_SONIFICATION_RESPECTFUL:
2131        if (isInCall()) {
2132            device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
2133        } else if (isStreamActiveRemotely(AudioSystem::MUSIC,
2134                SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) {
2135            // while media is playing on a remote device, use the the sonification behavior.
2136            // Note that we test this usecase before testing if media is playing because
2137            //   the isStreamActive() method only informs about the activity of a stream, not
2138            //   if it's for local playback. Note also that we use the same delay between both tests
2139            device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
2140        } else if (isStreamActive(AudioSystem::MUSIC, SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) {
2141            // while media is playing (or has recently played), use the same device
2142            device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/);
2143        } else {
2144            // when media is not playing anymore, fall back on the sonification behavior
2145            device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
2146        }
2147
2148        break;
2149
2150    case STRATEGY_DTMF:
2151        if (!isInCall()) {
2152            // when off call, DTMF strategy follows the same rules as MEDIA strategy
2153            device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/);
2154            break;
2155        }
2156        // when in call, DTMF and PHONE strategies follow the same rules
2157        // FALL THROUGH
2158
2159    case STRATEGY_PHONE:
2160        // for phone strategy, we first consider the forced use and then the available devices by order
2161        // of priority
2162        switch (mForceUse[AudioSystem::FOR_COMMUNICATION]) {
2163        case AudioSystem::FORCE_BT_SCO:
2164            if (!isInCall() || strategy != STRATEGY_DTMF) {
2165                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
2166                if (device) break;
2167            }
2168            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
2169            if (device) break;
2170            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO;
2171            if (device) break;
2172            // if SCO device is requested but no SCO device is available, fall back to default case
2173            // FALL THROUGH
2174
2175        default:    // FORCE_NONE
2176            // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP
2177            if (mHasA2dp && !isInCall() &&
2178                    (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
2179                    (getA2dpOutput() != 0) && !mA2dpSuspended) {
2180                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
2181                if (device) break;
2182                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
2183                if (device) break;
2184            }
2185            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
2186            if (device) break;
2187            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADSET;
2188            if (device) break;
2189            if (mPhoneState != AudioSystem::MODE_IN_CALL) {
2190                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
2191                if (device) break;
2192                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
2193                if (device) break;
2194                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
2195                if (device) break;
2196                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
2197                if (device) break;
2198                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
2199                if (device) break;
2200            }
2201            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_EARPIECE;
2202            if (device) break;
2203            device = mDefaultOutputDevice;
2204            if (device == AUDIO_DEVICE_NONE) {
2205                ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE");
2206            }
2207            break;
2208
2209        case AudioSystem::FORCE_SPEAKER:
2210            // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to
2211            // A2DP speaker when forcing to speaker output
2212            if (mHasA2dp && !isInCall() &&
2213                    (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
2214                    (getA2dpOutput() != 0) && !mA2dpSuspended) {
2215                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
2216                if (device) break;
2217            }
2218            if (mPhoneState != AudioSystem::MODE_IN_CALL) {
2219                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
2220                if (device) break;
2221                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
2222                if (device) break;
2223                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
2224                if (device) break;
2225                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
2226                if (device) break;
2227                device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
2228                if (device) break;
2229            }
2230            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
2231            if (device) break;
2232            device = mDefaultOutputDevice;
2233            if (device == AUDIO_DEVICE_NONE) {
2234                ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE, FORCE_SPEAKER");
2235            }
2236            break;
2237        }
2238    break;
2239
2240    case STRATEGY_SONIFICATION:
2241
2242        // If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by
2243        // handleIncallSonification().
2244        if (isInCall()) {
2245            device = getDeviceForStrategy(STRATEGY_PHONE, false /*fromCache*/);
2246            break;
2247        }
2248        // FALL THROUGH
2249
2250    case STRATEGY_ENFORCED_AUDIBLE:
2251        // strategy STRATEGY_ENFORCED_AUDIBLE uses same routing policy as STRATEGY_SONIFICATION
2252        // except:
2253        //   - when in call where it doesn't default to STRATEGY_PHONE behavior
2254        //   - in countries where not enforced in which case it follows STRATEGY_MEDIA
2255
2256        if ((strategy == STRATEGY_SONIFICATION) ||
2257                (mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_SYSTEM_ENFORCED)) {
2258            device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
2259            if (device == AUDIO_DEVICE_NONE) {
2260                ALOGE("getDeviceForStrategy() speaker device not found for STRATEGY_SONIFICATION");
2261            }
2262        }
2263        // The second device used for sonification is the same as the device used by media strategy
2264        // FALL THROUGH
2265
2266    case STRATEGY_MEDIA: {
2267        uint32_t device2 = AUDIO_DEVICE_NONE;
2268        if (strategy != STRATEGY_SONIFICATION) {
2269            // no sonification on remote submix (e.g. WFD)
2270            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_REMOTE_SUBMIX;
2271        }
2272        if ((device2 == AUDIO_DEVICE_NONE) &&
2273                mHasA2dp && (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
2274                (getA2dpOutput() != 0) && !mA2dpSuspended) {
2275            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
2276            if (device2 == AUDIO_DEVICE_NONE) {
2277                device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
2278            }
2279            if (device2 == AUDIO_DEVICE_NONE) {
2280                device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
2281            }
2282        }
2283        if (device2 == AUDIO_DEVICE_NONE) {
2284            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
2285        }
2286        if (device2 == AUDIO_DEVICE_NONE) {
2287            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADSET;
2288        }
2289        if (device2 == AUDIO_DEVICE_NONE) {
2290            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
2291        }
2292        if (device2 == AUDIO_DEVICE_NONE) {
2293            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
2294        }
2295        if (device2 == AUDIO_DEVICE_NONE) {
2296            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
2297        }
2298        if ((device2 == AUDIO_DEVICE_NONE) && (strategy != STRATEGY_SONIFICATION)) {
2299            // no sonification on aux digital (e.g. HDMI)
2300            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
2301        }
2302        if ((device2 == AUDIO_DEVICE_NONE) &&
2303                (mForceUse[AudioSystem::FOR_DOCK] == AudioSystem::FORCE_ANALOG_DOCK)) {
2304            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
2305        }
2306        if (device2 == AUDIO_DEVICE_NONE) {
2307            device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
2308        }
2309
2310        // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or
2311        // STRATEGY_ENFORCED_AUDIBLE, AUDIO_DEVICE_NONE otherwise
2312        device |= device2;
2313        if (device) break;
2314        device = mDefaultOutputDevice;
2315        if (device == AUDIO_DEVICE_NONE) {
2316            ALOGE("getDeviceForStrategy() no device found for STRATEGY_MEDIA");
2317        }
2318        } break;
2319
2320    default:
2321        ALOGW("getDeviceForStrategy() unknown strategy: %d", strategy);
2322        break;
2323    }
2324
2325    ALOGVV("getDeviceForStrategy() strategy %d, device %x", strategy, device);
2326    return device;
2327}
2328
2329void AudioPolicyManagerBase::updateDevicesAndOutputs()
2330{
2331    for (int i = 0; i < NUM_STRATEGIES; i++) {
2332        mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/);
2333    }
2334    mPreviousOutputs = mOutputs;
2335}
2336
2337uint32_t AudioPolicyManagerBase::checkDeviceMuteStrategies(AudioOutputDescriptor *outputDesc,
2338                                                       audio_devices_t prevDevice,
2339                                                       uint32_t delayMs)
2340{
2341    // mute/unmute strategies using an incompatible device combination
2342    // if muting, wait for the audio in pcm buffer to be drained before proceeding
2343    // if unmuting, unmute only after the specified delay
2344    if (outputDesc->isDuplicated()) {
2345        return 0;
2346    }
2347
2348    uint32_t muteWaitMs = 0;
2349    audio_devices_t device = outputDesc->device();
2350    bool shouldMute = outputDesc->isActive() && (AudioSystem::popCount(device) >= 2);
2351    // temporary mute output if device selection changes to avoid volume bursts due to
2352    // different per device volumes
2353    bool tempMute = outputDesc->isActive() && (device != prevDevice);
2354
2355    for (size_t i = 0; i < NUM_STRATEGIES; i++) {
2356        audio_devices_t curDevice = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/);
2357        bool mute = shouldMute && (curDevice & device) && (curDevice != device);
2358        bool doMute = false;
2359
2360        if (mute && !outputDesc->mStrategyMutedByDevice[i]) {
2361            doMute = true;
2362            outputDesc->mStrategyMutedByDevice[i] = true;
2363        } else if (!mute && outputDesc->mStrategyMutedByDevice[i]){
2364            doMute = true;
2365            outputDesc->mStrategyMutedByDevice[i] = false;
2366        }
2367        if (doMute || tempMute) {
2368            for (size_t j = 0; j < mOutputs.size(); j++) {
2369                AudioOutputDescriptor *desc = mOutputs.valueAt(j);
2370                // skip output if it does not share any device with current output
2371                if ((desc->supportedDevices() & outputDesc->supportedDevices())
2372                        == AUDIO_DEVICE_NONE) {
2373                    continue;
2374                }
2375                audio_io_handle_t curOutput = mOutputs.keyAt(j);
2376                ALOGVV("checkDeviceMuteStrategies() %s strategy %d (curDevice %04x) on output %d",
2377                      mute ? "muting" : "unmuting", i, curDevice, curOutput);
2378                setStrategyMute((routing_strategy)i, mute, curOutput, mute ? 0 : delayMs);
2379                if (desc->isStrategyActive((routing_strategy)i)) {
2380                    // do tempMute only for current output
2381                    if (tempMute && (desc == outputDesc)) {
2382                        setStrategyMute((routing_strategy)i, true, curOutput);
2383                        setStrategyMute((routing_strategy)i, false, curOutput,
2384                                            desc->latency() * 2, device);
2385                    }
2386                    if ((tempMute && (desc == outputDesc)) || mute) {
2387                        if (muteWaitMs < desc->latency()) {
2388                            muteWaitMs = desc->latency();
2389                        }
2390                    }
2391                }
2392            }
2393        }
2394    }
2395
2396    // FIXME: should not need to double latency if volume could be applied immediately by the
2397    // audioflinger mixer. We must account for the delay between now and the next time
2398    // the audioflinger thread for this output will process a buffer (which corresponds to
2399    // one buffer size, usually 1/2 or 1/4 of the latency).
2400    muteWaitMs *= 2;
2401    // wait for the PCM output buffers to empty before proceeding with the rest of the command
2402    if (muteWaitMs > delayMs) {
2403        muteWaitMs -= delayMs;
2404        usleep(muteWaitMs * 1000);
2405        return muteWaitMs;
2406    }
2407    return 0;
2408}
2409
2410uint32_t AudioPolicyManagerBase::setOutputDevice(audio_io_handle_t output,
2411                                             audio_devices_t device,
2412                                             bool force,
2413                                             int delayMs)
2414{
2415    ALOGV("setOutputDevice() output %d device %04x delayMs %d", output, device, delayMs);
2416    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2417    AudioParameter param;
2418    uint32_t muteWaitMs;
2419
2420    if (outputDesc->isDuplicated()) {
2421        muteWaitMs = setOutputDevice(outputDesc->mOutput1->mId, device, force, delayMs);
2422        muteWaitMs += setOutputDevice(outputDesc->mOutput2->mId, device, force, delayMs);
2423        return muteWaitMs;
2424    }
2425    // no need to proceed if new device is not AUDIO_DEVICE_NONE and not supported by current
2426    // output profile
2427    if ((device != AUDIO_DEVICE_NONE) &&
2428            ((device & outputDesc->mProfile->mSupportedDevices) == 0)) {
2429        return 0;
2430    }
2431
2432    // filter devices according to output selected
2433    device = (audio_devices_t)(device & outputDesc->mProfile->mSupportedDevices);
2434
2435    audio_devices_t prevDevice = outputDesc->mDevice;
2436
2437    ALOGV("setOutputDevice() prevDevice %04x", prevDevice);
2438
2439    if (device != AUDIO_DEVICE_NONE) {
2440        outputDesc->mDevice = device;
2441    }
2442    muteWaitMs = checkDeviceMuteStrategies(outputDesc, prevDevice, delayMs);
2443
2444    // Do not change the routing if:
2445    //  - the requested device is AUDIO_DEVICE_NONE
2446    //  - the requested device is the same as current device and force is not specified.
2447    // Doing this check here allows the caller to call setOutputDevice() without conditions
2448    if ((device == AUDIO_DEVICE_NONE || device == prevDevice) && !force) {
2449        ALOGV("setOutputDevice() setting same device %04x or null device for output %d", device, output);
2450        return muteWaitMs;
2451    }
2452
2453    ALOGV("setOutputDevice() changing device");
2454    // do the routing
2455    param.addInt(String8(AudioParameter::keyRouting), (int)device);
2456    mpClientInterface->setParameters(output, param.toString(), delayMs);
2457
2458    // update stream volumes according to new device
2459    applyStreamVolumes(output, device, delayMs);
2460
2461    return muteWaitMs;
2462}
2463
2464AudioPolicyManagerBase::IOProfile *AudioPolicyManagerBase::getInputProfile(audio_devices_t device,
2465                                                   uint32_t samplingRate,
2466                                                   uint32_t format,
2467                                                   uint32_t channelMask)
2468{
2469    // Choose an input profile based on the requested capture parameters: select the first available
2470    // profile supporting all requested parameters.
2471
2472    for (size_t i = 0; i < mHwModules.size(); i++)
2473    {
2474        if (mHwModules[i]->mHandle == 0) {
2475            continue;
2476        }
2477        for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++)
2478        {
2479            IOProfile *profile = mHwModules[i]->mInputProfiles[j];
2480            if (profile->isCompatibleProfile(device, samplingRate, format,
2481                                             channelMask,(audio_output_flags_t)0)) {
2482                return profile;
2483            }
2484        }
2485    }
2486    return NULL;
2487}
2488
2489audio_devices_t AudioPolicyManagerBase::getDeviceForInputSource(int inputSource)
2490{
2491    uint32_t device = AUDIO_DEVICE_NONE;
2492
2493    switch (inputSource) {
2494    case AUDIO_SOURCE_VOICE_UPLINK:
2495      if (mAvailableInputDevices & AUDIO_DEVICE_IN_VOICE_CALL) {
2496          device = AUDIO_DEVICE_IN_VOICE_CALL;
2497          break;
2498      }
2499      // FALL THROUGH
2500
2501    case AUDIO_SOURCE_DEFAULT:
2502    case AUDIO_SOURCE_MIC:
2503    case AUDIO_SOURCE_VOICE_RECOGNITION:
2504    case AUDIO_SOURCE_VOICE_COMMUNICATION:
2505        if (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO &&
2506            mAvailableInputDevices & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
2507            device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
2508        } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_WIRED_HEADSET) {
2509            device = AUDIO_DEVICE_IN_WIRED_HEADSET;
2510        } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
2511            device = AUDIO_DEVICE_IN_BUILTIN_MIC;
2512        }
2513        break;
2514    case AUDIO_SOURCE_CAMCORDER:
2515        if (mAvailableInputDevices & AUDIO_DEVICE_IN_BACK_MIC) {
2516            device = AUDIO_DEVICE_IN_BACK_MIC;
2517        } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
2518            device = AUDIO_DEVICE_IN_BUILTIN_MIC;
2519        }
2520        break;
2521    case AUDIO_SOURCE_VOICE_DOWNLINK:
2522    case AUDIO_SOURCE_VOICE_CALL:
2523        if (mAvailableInputDevices & AUDIO_DEVICE_IN_VOICE_CALL) {
2524            device = AUDIO_DEVICE_IN_VOICE_CALL;
2525        }
2526        break;
2527    case AUDIO_SOURCE_REMOTE_SUBMIX:
2528        if (mAvailableInputDevices & AUDIO_DEVICE_IN_REMOTE_SUBMIX) {
2529            device = AUDIO_DEVICE_IN_REMOTE_SUBMIX;
2530        }
2531        break;
2532    default:
2533        ALOGW("getDeviceForInputSource() invalid input source %d", inputSource);
2534        break;
2535    }
2536    ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device);
2537    return device;
2538}
2539
2540bool AudioPolicyManagerBase::isVirtualInputDevice(audio_devices_t device)
2541{
2542    if ((device & AUDIO_DEVICE_BIT_IN) != 0) {
2543        device &= ~AUDIO_DEVICE_BIT_IN;
2544        if ((popcount(device) == 1) && ((device & ~APM_AUDIO_IN_DEVICE_VIRTUAL_ALL) == 0))
2545            return true;
2546    }
2547    return false;
2548}
2549
2550audio_io_handle_t AudioPolicyManagerBase::getActiveInput(bool ignoreVirtualInputs)
2551{
2552    for (size_t i = 0; i < mInputs.size(); i++) {
2553        const AudioInputDescriptor * input_descriptor = mInputs.valueAt(i);
2554        if ((input_descriptor->mRefCount > 0)
2555                && (!ignoreVirtualInputs || !isVirtualInputDevice(input_descriptor->mDevice))) {
2556            return mInputs.keyAt(i);
2557        }
2558    }
2559    return 0;
2560}
2561
2562
2563audio_devices_t AudioPolicyManagerBase::getDeviceForVolume(audio_devices_t device)
2564{
2565    if (device == AUDIO_DEVICE_NONE) {
2566        // this happens when forcing a route update and no track is active on an output.
2567        // In this case the returned category is not important.
2568        device =  AUDIO_DEVICE_OUT_SPEAKER;
2569    } else if (AudioSystem::popCount(device) > 1) {
2570        // Multiple device selection is either:
2571        //  - speaker + one other device: give priority to speaker in this case.
2572        //  - one A2DP device + another device: happens with duplicated output. In this case
2573        // retain the device on the A2DP output as the other must not correspond to an active
2574        // selection if not the speaker.
2575        if (device & AUDIO_DEVICE_OUT_SPEAKER) {
2576            device = AUDIO_DEVICE_OUT_SPEAKER;
2577        } else {
2578            device = (audio_devices_t)(device & AUDIO_DEVICE_OUT_ALL_A2DP);
2579        }
2580    }
2581
2582    ALOGW_IF(AudioSystem::popCount(device) != 1,
2583            "getDeviceForVolume() invalid device combination: %08x",
2584            device);
2585
2586    return device;
2587}
2588
2589AudioPolicyManagerBase::device_category AudioPolicyManagerBase::getDeviceCategory(audio_devices_t device)
2590{
2591    switch(getDeviceForVolume(device)) {
2592        case AUDIO_DEVICE_OUT_EARPIECE:
2593            return DEVICE_CATEGORY_EARPIECE;
2594        case AUDIO_DEVICE_OUT_WIRED_HEADSET:
2595        case AUDIO_DEVICE_OUT_WIRED_HEADPHONE:
2596        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO:
2597        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET:
2598        case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP:
2599        case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES:
2600            return DEVICE_CATEGORY_HEADSET;
2601        case AUDIO_DEVICE_OUT_SPEAKER:
2602        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT:
2603        case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER:
2604        case AUDIO_DEVICE_OUT_AUX_DIGITAL:
2605        case AUDIO_DEVICE_OUT_USB_ACCESSORY:
2606        case AUDIO_DEVICE_OUT_USB_DEVICE:
2607        case AUDIO_DEVICE_OUT_REMOTE_SUBMIX:
2608        default:
2609            return DEVICE_CATEGORY_SPEAKER;
2610    }
2611}
2612
2613float AudioPolicyManagerBase::volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc,
2614        int indexInUi)
2615{
2616    device_category deviceCategory = getDeviceCategory(device);
2617    const VolumeCurvePoint *curve = streamDesc.mVolumeCurve[deviceCategory];
2618
2619    // the volume index in the UI is relative to the min and max volume indices for this stream type
2620    int nbSteps = 1 + curve[VOLMAX].mIndex -
2621            curve[VOLMIN].mIndex;
2622    int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) /
2623            (streamDesc.mIndexMax - streamDesc.mIndexMin);
2624
2625    // find what part of the curve this index volume belongs to, or if it's out of bounds
2626    int segment = 0;
2627    if (volIdx < curve[VOLMIN].mIndex) {         // out of bounds
2628        return 0.0f;
2629    } else if (volIdx < curve[VOLKNEE1].mIndex) {
2630        segment = 0;
2631    } else if (volIdx < curve[VOLKNEE2].mIndex) {
2632        segment = 1;
2633    } else if (volIdx <= curve[VOLMAX].mIndex) {
2634        segment = 2;
2635    } else {                                                               // out of bounds
2636        return 1.0f;
2637    }
2638
2639    // linear interpolation in the attenuation table in dB
2640    float decibels = curve[segment].mDBAttenuation +
2641            ((float)(volIdx - curve[segment].mIndex)) *
2642                ( (curve[segment+1].mDBAttenuation -
2643                        curve[segment].mDBAttenuation) /
2644                    ((float)(curve[segment+1].mIndex -
2645                            curve[segment].mIndex)) );
2646
2647    float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 )
2648
2649    ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f",
2650            curve[segment].mIndex, volIdx,
2651            curve[segment+1].mIndex,
2652            curve[segment].mDBAttenuation,
2653            decibels,
2654            curve[segment+1].mDBAttenuation,
2655            amplification);
2656
2657    return amplification;
2658}
2659
2660const AudioPolicyManagerBase::VolumeCurvePoint
2661    AudioPolicyManagerBase::sDefaultVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2662    {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f}
2663};
2664
2665const AudioPolicyManagerBase::VolumeCurvePoint
2666    AudioPolicyManagerBase::sDefaultMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2667    {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f}
2668};
2669
2670const AudioPolicyManagerBase::VolumeCurvePoint
2671    AudioPolicyManagerBase::sSpeakerMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2672    {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f}
2673};
2674
2675const AudioPolicyManagerBase::VolumeCurvePoint
2676    AudioPolicyManagerBase::sSpeakerSonificationVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2677    {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f}
2678};
2679
2680// AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks
2681// AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets (See AudioService.java).
2682// The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset.
2683const AudioPolicyManagerBase::VolumeCurvePoint
2684    AudioPolicyManagerBase::sDefaultSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2685    {1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f}
2686};
2687
2688const AudioPolicyManagerBase::VolumeCurvePoint
2689    AudioPolicyManagerBase::sHeadsetSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2690    {1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f}
2691};
2692
2693const AudioPolicyManagerBase::VolumeCurvePoint
2694    AudioPolicyManagerBase::sDefaultVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2695    {0, -42.0f}, {33, -28.0f}, {66, -14.0f}, {100, 0.0f}
2696};
2697
2698const AudioPolicyManagerBase::VolumeCurvePoint
2699    AudioPolicyManagerBase::sSpeakerVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
2700    {0, -24.0f}, {33, -16.0f}, {66, -8.0f}, {100, 0.0f}
2701};
2702
2703const AudioPolicyManagerBase::VolumeCurvePoint
2704            *AudioPolicyManagerBase::sVolumeProfiles[AUDIO_STREAM_CNT]
2705                                                   [AudioPolicyManagerBase::DEVICE_CATEGORY_CNT] = {
2706    { // AUDIO_STREAM_VOICE_CALL
2707        sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
2708        sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2709        sDefaultVoiceVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2710    },
2711    { // AUDIO_STREAM_SYSTEM
2712        sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2713        sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2714        sDefaultSystemVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2715    },
2716    { // AUDIO_STREAM_RING
2717        sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2718        sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2719        sDefaultVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2720    },
2721    { // AUDIO_STREAM_MUSIC
2722        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
2723        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2724        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2725    },
2726    { // AUDIO_STREAM_ALARM
2727        sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2728        sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2729        sDefaultVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2730    },
2731    { // AUDIO_STREAM_NOTIFICATION
2732        sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2733        sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2734        sDefaultVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2735    },
2736    { // AUDIO_STREAM_BLUETOOTH_SCO
2737        sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
2738        sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2739        sDefaultVoiceVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2740    },
2741    { // AUDIO_STREAM_ENFORCED_AUDIBLE
2742        sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2743        sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2744        sDefaultSystemVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2745    },
2746    {  // AUDIO_STREAM_DTMF
2747        sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2748        sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2749        sDefaultSystemVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2750    },
2751    { // AUDIO_STREAM_TTS
2752        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
2753        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2754        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
2755    },
2756};
2757
2758void AudioPolicyManagerBase::initializeVolumeCurves()
2759{
2760    for (int i = 0; i < AUDIO_STREAM_CNT; i++) {
2761        for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) {
2762            mStreams[i].mVolumeCurve[j] =
2763                    sVolumeProfiles[i][j];
2764        }
2765    }
2766}
2767
2768float AudioPolicyManagerBase::computeVolume(int stream,
2769                                            int index,
2770                                            audio_io_handle_t output,
2771                                            audio_devices_t device)
2772{
2773    float volume = 1.0;
2774    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2775    StreamDescriptor &streamDesc = mStreams[stream];
2776
2777    if (device == AUDIO_DEVICE_NONE) {
2778        device = outputDesc->device();
2779    }
2780
2781    // if volume is not 0 (not muted), force media volume to max on digital output
2782    if (stream == AudioSystem::MUSIC &&
2783        index != mStreams[stream].mIndexMin &&
2784        (device == AUDIO_DEVICE_OUT_AUX_DIGITAL ||
2785         device == AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET ||
2786         device == AUDIO_DEVICE_OUT_USB_ACCESSORY ||
2787         device == AUDIO_DEVICE_OUT_USB_DEVICE)) {
2788        return 1.0;
2789    }
2790
2791    volume = volIndexToAmpl(device, streamDesc, index);
2792
2793    // if a headset is connected, apply the following rules to ring tones and notifications
2794    // to avoid sound level bursts in user's ears:
2795    // - always attenuate ring tones and notifications volume by 6dB
2796    // - if music is playing, always limit the volume to current music volume,
2797    // with a minimum threshold at -36dB so that notification is always perceived.
2798    const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream);
2799    if ((device & (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP |
2800            AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
2801            AUDIO_DEVICE_OUT_WIRED_HEADSET |
2802            AUDIO_DEVICE_OUT_WIRED_HEADPHONE)) &&
2803        ((stream_strategy == STRATEGY_SONIFICATION)
2804                || (stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL)
2805                || (stream == AudioSystem::SYSTEM)
2806                || ((stream_strategy == STRATEGY_ENFORCED_AUDIBLE) &&
2807                    (mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_NONE))) &&
2808        streamDesc.mCanBeMuted) {
2809        volume *= SONIFICATION_HEADSET_VOLUME_FACTOR;
2810        // when the phone is ringing we must consider that music could have been paused just before
2811        // by the music application and behave as if music was active if the last music track was
2812        // just stopped
2813        if (isStreamActive(AudioSystem::MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY) ||
2814                mLimitRingtoneVolume) {
2815            audio_devices_t musicDevice = getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/);
2816            float musicVol = computeVolume(AudioSystem::MUSIC,
2817                               mStreams[AudioSystem::MUSIC].getVolumeIndex(musicDevice),
2818                               output,
2819                               musicDevice);
2820            float minVol = (musicVol > SONIFICATION_HEADSET_VOLUME_MIN) ?
2821                                musicVol : SONIFICATION_HEADSET_VOLUME_MIN;
2822            if (volume > minVol) {
2823                volume = minVol;
2824                ALOGV("computeVolume limiting volume to %f musicVol %f", minVol, musicVol);
2825            }
2826        }
2827    }
2828
2829    return volume;
2830}
2831
2832status_t AudioPolicyManagerBase::checkAndSetVolume(int stream,
2833                                                   int index,
2834                                                   audio_io_handle_t output,
2835                                                   audio_devices_t device,
2836                                                   int delayMs,
2837                                                   bool force)
2838{
2839
2840    // do not change actual stream volume if the stream is muted
2841    if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) {
2842        ALOGVV("checkAndSetVolume() stream %d muted count %d",
2843              stream, mOutputs.valueFor(output)->mMuteCount[stream]);
2844        return NO_ERROR;
2845    }
2846
2847    // do not change in call volume if bluetooth is connected and vice versa
2848    if ((stream == AudioSystem::VOICE_CALL && mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) ||
2849        (stream == AudioSystem::BLUETOOTH_SCO && mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO)) {
2850        ALOGV("checkAndSetVolume() cannot set stream %d volume with force use = %d for comm",
2851             stream, mForceUse[AudioSystem::FOR_COMMUNICATION]);
2852        return INVALID_OPERATION;
2853    }
2854
2855    float volume = computeVolume(stream, index, output, device);
2856    // We actually change the volume if:
2857    // - the float value returned by computeVolume() changed
2858    // - the force flag is set
2859    if (volume != mOutputs.valueFor(output)->mCurVolume[stream] ||
2860            force) {
2861        mOutputs.valueFor(output)->mCurVolume[stream] = volume;
2862        ALOGVV("checkAndSetVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs);
2863        // Force VOICE_CALL to track BLUETOOTH_SCO stream volume when bluetooth audio is
2864        // enabled
2865        if (stream == AudioSystem::BLUETOOTH_SCO) {
2866            mpClientInterface->setStreamVolume(AudioSystem::VOICE_CALL, volume, output, delayMs);
2867        }
2868        mpClientInterface->setStreamVolume((AudioSystem::stream_type)stream, volume, output, delayMs);
2869    }
2870
2871    if (stream == AudioSystem::VOICE_CALL ||
2872        stream == AudioSystem::BLUETOOTH_SCO) {
2873        float voiceVolume;
2874        // Force voice volume to max for bluetooth SCO as volume is managed by the headset
2875        if (stream == AudioSystem::VOICE_CALL) {
2876            voiceVolume = (float)index/(float)mStreams[stream].mIndexMax;
2877        } else {
2878            voiceVolume = 1.0;
2879        }
2880
2881        if (voiceVolume != mLastVoiceVolume && output == mPrimaryOutput) {
2882            mpClientInterface->setVoiceVolume(voiceVolume, delayMs);
2883            mLastVoiceVolume = voiceVolume;
2884        }
2885    }
2886
2887    return NO_ERROR;
2888}
2889
2890void AudioPolicyManagerBase::applyStreamVolumes(audio_io_handle_t output,
2891                                                audio_devices_t device,
2892                                                int delayMs,
2893                                                bool force)
2894{
2895    ALOGVV("applyStreamVolumes() for output %d and device %x", output, device);
2896
2897    for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
2898        checkAndSetVolume(stream,
2899                          mStreams[stream].getVolumeIndex(device),
2900                          output,
2901                          device,
2902                          delayMs,
2903                          force);
2904    }
2905}
2906
2907void AudioPolicyManagerBase::setStrategyMute(routing_strategy strategy,
2908                                             bool on,
2909                                             audio_io_handle_t output,
2910                                             int delayMs,
2911                                             audio_devices_t device)
2912{
2913    ALOGVV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output);
2914    for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
2915        if (getStrategy((AudioSystem::stream_type)stream) == strategy) {
2916            setStreamMute(stream, on, output, delayMs, device);
2917        }
2918    }
2919}
2920
2921void AudioPolicyManagerBase::setStreamMute(int stream,
2922                                           bool on,
2923                                           audio_io_handle_t output,
2924                                           int delayMs,
2925                                           audio_devices_t device)
2926{
2927    StreamDescriptor &streamDesc = mStreams[stream];
2928    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2929    if (device == AUDIO_DEVICE_NONE) {
2930        device = outputDesc->device();
2931    }
2932
2933    ALOGVV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d device %04x",
2934          stream, on, output, outputDesc->mMuteCount[stream], device);
2935
2936    if (on) {
2937        if (outputDesc->mMuteCount[stream] == 0) {
2938            if (streamDesc.mCanBeMuted &&
2939                    ((stream != AudioSystem::ENFORCED_AUDIBLE) ||
2940                     (mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_NONE))) {
2941                checkAndSetVolume(stream, 0, output, device, delayMs);
2942            }
2943        }
2944        // increment mMuteCount after calling checkAndSetVolume() so that volume change is not ignored
2945        outputDesc->mMuteCount[stream]++;
2946    } else {
2947        if (outputDesc->mMuteCount[stream] == 0) {
2948            ALOGV("setStreamMute() unmuting non muted stream!");
2949            return;
2950        }
2951        if (--outputDesc->mMuteCount[stream] == 0) {
2952            checkAndSetVolume(stream,
2953                              streamDesc.getVolumeIndex(device),
2954                              output,
2955                              device,
2956                              delayMs);
2957        }
2958    }
2959}
2960
2961void AudioPolicyManagerBase::handleIncallSonification(int stream, bool starting, bool stateChange)
2962{
2963    // if the stream pertains to sonification strategy and we are in call we must
2964    // mute the stream if it is low visibility. If it is high visibility, we must play a tone
2965    // in the device used for phone strategy and play the tone if the selected device does not
2966    // interfere with the device used for phone strategy
2967    // if stateChange is true, we are called from setPhoneState() and we must mute or unmute as
2968    // many times as there are active tracks on the output
2969    const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream);
2970    if ((stream_strategy == STRATEGY_SONIFICATION) ||
2971            ((stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL))) {
2972        AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mPrimaryOutput);
2973        ALOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d",
2974                stream, starting, outputDesc->mDevice, stateChange);
2975        if (outputDesc->mRefCount[stream]) {
2976            int muteCount = 1;
2977            if (stateChange) {
2978                muteCount = outputDesc->mRefCount[stream];
2979            }
2980            if (AudioSystem::isLowVisibility((AudioSystem::stream_type)stream)) {
2981                ALOGV("handleIncallSonification() low visibility, muteCount %d", muteCount);
2982                for (int i = 0; i < muteCount; i++) {
2983                    setStreamMute(stream, starting, mPrimaryOutput);
2984                }
2985            } else {
2986                ALOGV("handleIncallSonification() high visibility");
2987                if (outputDesc->device() &
2988                        getDeviceForStrategy(STRATEGY_PHONE, true /*fromCache*/)) {
2989                    ALOGV("handleIncallSonification() high visibility muted, muteCount %d", muteCount);
2990                    for (int i = 0; i < muteCount; i++) {
2991                        setStreamMute(stream, starting, mPrimaryOutput);
2992                    }
2993                }
2994                if (starting) {
2995                    mpClientInterface->startTone(ToneGenerator::TONE_SUP_CALL_WAITING, AudioSystem::VOICE_CALL);
2996                } else {
2997                    mpClientInterface->stopTone();
2998                }
2999            }
3000        }
3001    }
3002}
3003
3004bool AudioPolicyManagerBase::isInCall()
3005{
3006    return isStateInCall(mPhoneState);
3007}
3008
3009bool AudioPolicyManagerBase::isStateInCall(int state) {
3010    return ((state == AudioSystem::MODE_IN_CALL) ||
3011            (state == AudioSystem::MODE_IN_COMMUNICATION));
3012}
3013
3014bool AudioPolicyManagerBase::needsDirectOuput(audio_stream_type_t stream,
3015                                              uint32_t samplingRate,
3016                                              audio_format_t format,
3017                                              audio_channel_mask_t channelMask,
3018                                              audio_output_flags_t flags,
3019                                              audio_devices_t device)
3020{
3021   return ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) ||
3022          (format != 0 && !AudioSystem::isLinearPCM(format)));
3023}
3024
3025uint32_t AudioPolicyManagerBase::getMaxEffectsCpuLoad()
3026{
3027    return MAX_EFFECTS_CPU_LOAD;
3028}
3029
3030uint32_t AudioPolicyManagerBase::getMaxEffectsMemory()
3031{
3032    return MAX_EFFECTS_MEMORY;
3033}
3034
3035// --- AudioOutputDescriptor class implementation
3036
3037AudioPolicyManagerBase::AudioOutputDescriptor::AudioOutputDescriptor(
3038        const IOProfile *profile)
3039    : mId(0), mSamplingRate(0), mFormat((audio_format_t)0),
3040      mChannelMask((audio_channel_mask_t)0), mLatency(0),
3041    mFlags((audio_output_flags_t)0), mDevice(AUDIO_DEVICE_NONE),
3042    mOutput1(0), mOutput2(0), mProfile(profile), mDirectOpenCount(0)
3043{
3044    // clear usage count for all stream types
3045    for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
3046        mRefCount[i] = 0;
3047        mCurVolume[i] = -1.0;
3048        mMuteCount[i] = 0;
3049        mStopTime[i] = 0;
3050    }
3051    for (int i = 0; i < NUM_STRATEGIES; i++) {
3052        mStrategyMutedByDevice[i] = false;
3053    }
3054    if (profile != NULL) {
3055        mSamplingRate = profile->mSamplingRates[0];
3056        mFormat = profile->mFormats[0];
3057        mChannelMask = profile->mChannelMasks[0];
3058        mFlags = profile->mFlags;
3059    }
3060}
3061
3062audio_devices_t AudioPolicyManagerBase::AudioOutputDescriptor::device() const
3063{
3064    if (isDuplicated()) {
3065        return (audio_devices_t)(mOutput1->mDevice | mOutput2->mDevice);
3066    } else {
3067        return mDevice;
3068    }
3069}
3070
3071uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::latency()
3072{
3073    if (isDuplicated()) {
3074        return (mOutput1->mLatency > mOutput2->mLatency) ? mOutput1->mLatency : mOutput2->mLatency;
3075    } else {
3076        return mLatency;
3077    }
3078}
3079
3080bool AudioPolicyManagerBase::AudioOutputDescriptor::sharesHwModuleWith(
3081        const AudioOutputDescriptor *outputDesc)
3082{
3083    if (isDuplicated()) {
3084        return mOutput1->sharesHwModuleWith(outputDesc) || mOutput2->sharesHwModuleWith(outputDesc);
3085    } else if (outputDesc->isDuplicated()){
3086        return sharesHwModuleWith(outputDesc->mOutput1) || sharesHwModuleWith(outputDesc->mOutput2);
3087    } else {
3088        return (mProfile->mModule == outputDesc->mProfile->mModule);
3089    }
3090}
3091
3092void AudioPolicyManagerBase::AudioOutputDescriptor::changeRefCount(AudioSystem::stream_type stream, int delta)
3093{
3094    // forward usage count change to attached outputs
3095    if (isDuplicated()) {
3096        mOutput1->changeRefCount(stream, delta);
3097        mOutput2->changeRefCount(stream, delta);
3098    }
3099    if ((delta + (int)mRefCount[stream]) < 0) {
3100        ALOGW("changeRefCount() invalid delta %d for stream %d, refCount %d", delta, stream, mRefCount[stream]);
3101        mRefCount[stream] = 0;
3102        return;
3103    }
3104    mRefCount[stream] += delta;
3105    ALOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]);
3106}
3107
3108audio_devices_t AudioPolicyManagerBase::AudioOutputDescriptor::supportedDevices()
3109{
3110    if (isDuplicated()) {
3111        return (audio_devices_t)(mOutput1->supportedDevices() | mOutput2->supportedDevices());
3112    } else {
3113        return mProfile->mSupportedDevices ;
3114    }
3115}
3116
3117bool AudioPolicyManagerBase::AudioOutputDescriptor::isActive(uint32_t inPastMs) const
3118{
3119    return isStrategyActive(NUM_STRATEGIES, inPastMs);
3120}
3121
3122bool AudioPolicyManagerBase::AudioOutputDescriptor::isStrategyActive(routing_strategy strategy,
3123                                                                       uint32_t inPastMs,
3124                                                                       nsecs_t sysTime) const
3125{
3126    if ((sysTime == 0) && (inPastMs != 0)) {
3127        sysTime = systemTime();
3128    }
3129    for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
3130        if (((getStrategy((AudioSystem::stream_type)i) == strategy) ||
3131                (NUM_STRATEGIES == strategy)) &&
3132                isStreamActive((AudioSystem::stream_type)i, inPastMs, sysTime)) {
3133            return true;
3134        }
3135    }
3136    return false;
3137}
3138
3139bool AudioPolicyManagerBase::AudioOutputDescriptor::isStreamActive(AudioSystem::stream_type stream,
3140                                                                       uint32_t inPastMs,
3141                                                                       nsecs_t sysTime) const
3142{
3143    if (mRefCount[stream] != 0) {
3144        return true;
3145    }
3146    if (inPastMs == 0) {
3147        return false;
3148    }
3149    if (sysTime == 0) {
3150        sysTime = systemTime();
3151    }
3152    if (ns2ms(sysTime - mStopTime[stream]) < inPastMs) {
3153        return true;
3154    }
3155    return false;
3156}
3157
3158
3159status_t AudioPolicyManagerBase::AudioOutputDescriptor::dump(int fd)
3160{
3161    const size_t SIZE = 256;
3162    char buffer[SIZE];
3163    String8 result;
3164
3165    snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
3166    result.append(buffer);
3167    snprintf(buffer, SIZE, " Format: %d\n", mFormat);
3168    result.append(buffer);
3169    snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask);
3170    result.append(buffer);
3171    snprintf(buffer, SIZE, " Latency: %d\n", mLatency);
3172    result.append(buffer);
3173    snprintf(buffer, SIZE, " Flags %08x\n", mFlags);
3174    result.append(buffer);
3175    snprintf(buffer, SIZE, " Devices %08x\n", device());
3176    result.append(buffer);
3177    snprintf(buffer, SIZE, " Stream volume refCount muteCount\n");
3178    result.append(buffer);
3179    for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
3180        snprintf(buffer, SIZE, " %02d     %.03f     %02d       %02d\n", i, mCurVolume[i], mRefCount[i], mMuteCount[i]);
3181        result.append(buffer);
3182    }
3183    write(fd, result.string(), result.size());
3184
3185    return NO_ERROR;
3186}
3187
3188// --- AudioInputDescriptor class implementation
3189
3190AudioPolicyManagerBase::AudioInputDescriptor::AudioInputDescriptor(const IOProfile *profile)
3191    : mSamplingRate(0), mFormat((audio_format_t)0), mChannelMask((audio_channel_mask_t)0),
3192      mDevice(AUDIO_DEVICE_NONE), mRefCount(0),
3193      mInputSource(0), mProfile(profile)
3194{
3195}
3196
3197status_t AudioPolicyManagerBase::AudioInputDescriptor::dump(int fd)
3198{
3199    const size_t SIZE = 256;
3200    char buffer[SIZE];
3201    String8 result;
3202
3203    snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
3204    result.append(buffer);
3205    snprintf(buffer, SIZE, " Format: %d\n", mFormat);
3206    result.append(buffer);
3207    snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask);
3208    result.append(buffer);
3209    snprintf(buffer, SIZE, " Devices %08x\n", mDevice);
3210    result.append(buffer);
3211    snprintf(buffer, SIZE, " Ref Count %d\n", mRefCount);
3212    result.append(buffer);
3213    write(fd, result.string(), result.size());
3214
3215    return NO_ERROR;
3216}
3217
3218// --- StreamDescriptor class implementation
3219
3220AudioPolicyManagerBase::StreamDescriptor::StreamDescriptor()
3221    :   mIndexMin(0), mIndexMax(1), mCanBeMuted(true)
3222{
3223    mIndexCur.add(AUDIO_DEVICE_OUT_DEFAULT, 0);
3224}
3225
3226int AudioPolicyManagerBase::StreamDescriptor::getVolumeIndex(audio_devices_t device)
3227{
3228    device = AudioPolicyManagerBase::getDeviceForVolume(device);
3229    // there is always a valid entry for AUDIO_DEVICE_OUT_DEFAULT
3230    if (mIndexCur.indexOfKey(device) < 0) {
3231        device = AUDIO_DEVICE_OUT_DEFAULT;
3232    }
3233    return mIndexCur.valueFor(device);
3234}
3235
3236void AudioPolicyManagerBase::StreamDescriptor::dump(int fd)
3237{
3238    const size_t SIZE = 256;
3239    char buffer[SIZE];
3240    String8 result;
3241
3242    snprintf(buffer, SIZE, "%s         %02d         %02d         ",
3243             mCanBeMuted ? "true " : "false", mIndexMin, mIndexMax);
3244    result.append(buffer);
3245    for (size_t i = 0; i < mIndexCur.size(); i++) {
3246        snprintf(buffer, SIZE, "%04x : %02d, ",
3247                 mIndexCur.keyAt(i),
3248                 mIndexCur.valueAt(i));
3249        result.append(buffer);
3250    }
3251    result.append("\n");
3252
3253    write(fd, result.string(), result.size());
3254}
3255
3256// --- EffectDescriptor class implementation
3257
3258status_t AudioPolicyManagerBase::EffectDescriptor::dump(int fd)
3259{
3260    const size_t SIZE = 256;
3261    char buffer[SIZE];
3262    String8 result;
3263
3264    snprintf(buffer, SIZE, " I/O: %d\n", mIo);
3265    result.append(buffer);
3266    snprintf(buffer, SIZE, " Strategy: %d\n", mStrategy);
3267    result.append(buffer);
3268    snprintf(buffer, SIZE, " Session: %d\n", mSession);
3269    result.append(buffer);
3270    snprintf(buffer, SIZE, " Name: %s\n",  mDesc.name);
3271    result.append(buffer);
3272    snprintf(buffer, SIZE, " %s\n",  mEnabled ? "Enabled" : "Disabled");
3273    result.append(buffer);
3274    write(fd, result.string(), result.size());
3275
3276    return NO_ERROR;
3277}
3278
3279// --- IOProfile class implementation
3280
3281AudioPolicyManagerBase::HwModule::HwModule(const char *name)
3282    : mName(strndup(name, AUDIO_HARDWARE_MODULE_ID_MAX_LEN)), mHandle(0)
3283{
3284}
3285
3286AudioPolicyManagerBase::HwModule::~HwModule()
3287{
3288    for (size_t i = 0; i < mOutputProfiles.size(); i++) {
3289         delete mOutputProfiles[i];
3290    }
3291    for (size_t i = 0; i < mInputProfiles.size(); i++) {
3292         delete mInputProfiles[i];
3293    }
3294    free((void *)mName);
3295}
3296
3297void AudioPolicyManagerBase::HwModule::dump(int fd)
3298{
3299    const size_t SIZE = 256;
3300    char buffer[SIZE];
3301    String8 result;
3302
3303    snprintf(buffer, SIZE, "  - name: %s\n", mName);
3304    result.append(buffer);
3305    snprintf(buffer, SIZE, "  - handle: %d\n", mHandle);
3306    result.append(buffer);
3307    write(fd, result.string(), result.size());
3308    if (mOutputProfiles.size()) {
3309        write(fd, "  - outputs:\n", sizeof("  - outputs:\n"));
3310        for (size_t i = 0; i < mOutputProfiles.size(); i++) {
3311            snprintf(buffer, SIZE, "    output %d:\n", i);
3312            write(fd, buffer, strlen(buffer));
3313            mOutputProfiles[i]->dump(fd);
3314        }
3315    }
3316    if (mInputProfiles.size()) {
3317        write(fd, "  - inputs:\n", sizeof("  - inputs:\n"));
3318        for (size_t i = 0; i < mInputProfiles.size(); i++) {
3319            snprintf(buffer, SIZE, "    input %d:\n", i);
3320            write(fd, buffer, strlen(buffer));
3321            mInputProfiles[i]->dump(fd);
3322        }
3323    }
3324}
3325
3326AudioPolicyManagerBase::IOProfile::IOProfile(HwModule *module)
3327    : mFlags((audio_output_flags_t)0), mModule(module)
3328{
3329}
3330
3331AudioPolicyManagerBase::IOProfile::~IOProfile()
3332{
3333}
3334
3335// checks if the IO profile is compatible with specified parameters. By convention a value of 0
3336// means a parameter is don't care
3337bool AudioPolicyManagerBase::IOProfile::isCompatibleProfile(audio_devices_t device,
3338                                                            uint32_t samplingRate,
3339                                                            uint32_t format,
3340                                                            uint32_t channelMask,
3341                                                            audio_output_flags_t flags) const
3342{
3343    if ((mSupportedDevices & device) != device) {
3344        return false;
3345    }
3346    if ((mFlags & flags) != flags) {
3347        return false;
3348    }
3349    if (samplingRate != 0) {
3350        size_t i;
3351        for (i = 0; i < mSamplingRates.size(); i++)
3352        {
3353            if (mSamplingRates[i] == samplingRate) {
3354                break;
3355            }
3356        }
3357        if (i == mSamplingRates.size()) {
3358            return false;
3359        }
3360    }
3361    if (format != 0) {
3362        size_t i;
3363        for (i = 0; i < mFormats.size(); i++)
3364        {
3365            if (mFormats[i] == format) {
3366                break;
3367            }
3368        }
3369        if (i == mFormats.size()) {
3370            return false;
3371        }
3372    }
3373    if (channelMask != 0) {
3374        size_t i;
3375        for (i = 0; i < mChannelMasks.size(); i++)
3376        {
3377            if (mChannelMasks[i] == channelMask) {
3378                break;
3379            }
3380        }
3381        if (i == mChannelMasks.size()) {
3382            return false;
3383        }
3384    }
3385    return true;
3386}
3387
3388void AudioPolicyManagerBase::IOProfile::dump(int fd)
3389{
3390    const size_t SIZE = 256;
3391    char buffer[SIZE];
3392    String8 result;
3393
3394    snprintf(buffer, SIZE, "    - sampling rates: ");
3395    result.append(buffer);
3396    for (size_t i = 0; i < mSamplingRates.size(); i++) {
3397        snprintf(buffer, SIZE, "%d", mSamplingRates[i]);
3398        result.append(buffer);
3399        result.append(i == (mSamplingRates.size() - 1) ? "\n" : ", ");
3400    }
3401
3402    snprintf(buffer, SIZE, "    - channel masks: ");
3403    result.append(buffer);
3404    for (size_t i = 0; i < mChannelMasks.size(); i++) {
3405        snprintf(buffer, SIZE, "%04x", mChannelMasks[i]);
3406        result.append(buffer);
3407        result.append(i == (mChannelMasks.size() - 1) ? "\n" : ", ");
3408    }
3409
3410    snprintf(buffer, SIZE, "    - formats: ");
3411    result.append(buffer);
3412    for (size_t i = 0; i < mFormats.size(); i++) {
3413        snprintf(buffer, SIZE, "%d", mFormats[i]);
3414        result.append(buffer);
3415        result.append(i == (mFormats.size() - 1) ? "\n" : ", ");
3416    }
3417
3418    snprintf(buffer, SIZE, "    - devices: %04x\n", mSupportedDevices);
3419    result.append(buffer);
3420    snprintf(buffer, SIZE, "    - flags: %04x\n", mFlags);
3421    result.append(buffer);
3422
3423    write(fd, result.string(), result.size());
3424}
3425
3426// --- audio_policy.conf file parsing
3427
3428struct StringToEnum {
3429    const char *name;
3430    uint32_t value;
3431};
3432
3433#define STRING_TO_ENUM(string) { #string, string }
3434#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
3435
3436const struct StringToEnum sDeviceNameToEnumTable[] = {
3437    STRING_TO_ENUM(AUDIO_DEVICE_OUT_EARPIECE),
3438    STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPEAKER),
3439    STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADSET),
3440    STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADPHONE),
3441    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_SCO),
3442    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_A2DP),
3443    STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_DIGITAL),
3444    STRING_TO_ENUM(AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET),
3445    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET),
3446    STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_DEVICE),
3447    STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_ACCESSORY),
3448    STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_USB),
3449    STRING_TO_ENUM(AUDIO_DEVICE_OUT_REMOTE_SUBMIX),
3450    STRING_TO_ENUM(AUDIO_DEVICE_IN_BUILTIN_MIC),
3451    STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET),
3452    STRING_TO_ENUM(AUDIO_DEVICE_IN_WIRED_HEADSET),
3453    STRING_TO_ENUM(AUDIO_DEVICE_IN_AUX_DIGITAL),
3454    STRING_TO_ENUM(AUDIO_DEVICE_IN_VOICE_CALL),
3455    STRING_TO_ENUM(AUDIO_DEVICE_IN_BACK_MIC),
3456    STRING_TO_ENUM(AUDIO_DEVICE_IN_REMOTE_SUBMIX),
3457    STRING_TO_ENUM(AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET),
3458    STRING_TO_ENUM(AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET),
3459    STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_ACCESSORY),
3460};
3461
3462const struct StringToEnum sFlagNameToEnumTable[] = {
3463    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DIRECT),
3464    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_PRIMARY),
3465    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_FAST),
3466    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DEEP_BUFFER),
3467    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD),
3468    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_NON_BLOCKING),
3469};
3470
3471const struct StringToEnum sFormatNameToEnumTable[] = {
3472    STRING_TO_ENUM(AUDIO_FORMAT_PCM_16_BIT),
3473    STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_BIT),
3474    STRING_TO_ENUM(AUDIO_FORMAT_MP3),
3475    STRING_TO_ENUM(AUDIO_FORMAT_AAC),
3476    STRING_TO_ENUM(AUDIO_FORMAT_VORBIS),
3477};
3478
3479const struct StringToEnum sOutChannelsNameToEnumTable[] = {
3480    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_MONO),
3481    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO),
3482    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1),
3483    STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1),
3484};
3485
3486const struct StringToEnum sInChannelsNameToEnumTable[] = {
3487    STRING_TO_ENUM(AUDIO_CHANNEL_IN_MONO),
3488    STRING_TO_ENUM(AUDIO_CHANNEL_IN_STEREO),
3489    STRING_TO_ENUM(AUDIO_CHANNEL_IN_FRONT_BACK),
3490};
3491
3492
3493uint32_t AudioPolicyManagerBase::stringToEnum(const struct StringToEnum *table,
3494                                              size_t size,
3495                                              const char *name)
3496{
3497    for (size_t i = 0; i < size; i++) {
3498        if (strcmp(table[i].name, name) == 0) {
3499            ALOGV("stringToEnum() found %s", table[i].name);
3500            return table[i].value;
3501        }
3502    }
3503    return 0;
3504}
3505
3506audio_output_flags_t AudioPolicyManagerBase::parseFlagNames(char *name)
3507{
3508    uint32_t flag = 0;
3509
3510    // it is OK to cast name to non const here as we are not going to use it after
3511    // strtok() modifies it
3512    char *flagName = strtok(name, "|");
3513    while (flagName != NULL) {
3514        if (strlen(flagName) != 0) {
3515            flag |= stringToEnum(sFlagNameToEnumTable,
3516                               ARRAY_SIZE(sFlagNameToEnumTable),
3517                               flagName);
3518        }
3519        flagName = strtok(NULL, "|");
3520    }
3521    return (audio_output_flags_t)flag;
3522}
3523
3524audio_devices_t AudioPolicyManagerBase::parseDeviceNames(char *name)
3525{
3526    uint32_t device = 0;
3527
3528    char *devName = strtok(name, "|");
3529    while (devName != NULL) {
3530        if (strlen(devName) != 0) {
3531            device |= stringToEnum(sDeviceNameToEnumTable,
3532                                 ARRAY_SIZE(sDeviceNameToEnumTable),
3533                                 devName);
3534        }
3535        devName = strtok(NULL, "|");
3536    }
3537    return device;
3538}
3539
3540void AudioPolicyManagerBase::loadSamplingRates(char *name, IOProfile *profile)
3541{
3542    char *str = strtok(name, "|");
3543
3544    // by convention, "0' in the first entry in mSamplingRates indicates the supported sampling
3545    // rates should be read from the output stream after it is opened for the first time
3546    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3547        profile->mSamplingRates.add(0);
3548        return;
3549    }
3550
3551    while (str != NULL) {
3552        uint32_t rate = atoi(str);
3553        if (rate != 0) {
3554            ALOGV("loadSamplingRates() adding rate %d", rate);
3555            profile->mSamplingRates.add(rate);
3556        }
3557        str = strtok(NULL, "|");
3558    }
3559    return;
3560}
3561
3562void AudioPolicyManagerBase::loadFormats(char *name, IOProfile *profile)
3563{
3564    char *str = strtok(name, "|");
3565
3566    // by convention, "0' in the first entry in mFormats indicates the supported formats
3567    // should be read from the output stream after it is opened for the first time
3568    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3569        profile->mFormats.add((audio_format_t)0);
3570        return;
3571    }
3572
3573    while (str != NULL) {
3574        audio_format_t format = (audio_format_t)stringToEnum(sFormatNameToEnumTable,
3575                                                             ARRAY_SIZE(sFormatNameToEnumTable),
3576                                                             str);
3577        if (format != 0) {
3578            profile->mFormats.add(format);
3579        }
3580        str = strtok(NULL, "|");
3581    }
3582    return;
3583}
3584
3585void AudioPolicyManagerBase::loadInChannels(char *name, IOProfile *profile)
3586{
3587    const char *str = strtok(name, "|");
3588
3589    ALOGV("loadInChannels() %s", name);
3590
3591    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3592        profile->mChannelMasks.add((audio_channel_mask_t)0);
3593        return;
3594    }
3595
3596    while (str != NULL) {
3597        audio_channel_mask_t channelMask =
3598                (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable,
3599                                                   ARRAY_SIZE(sInChannelsNameToEnumTable),
3600                                                   str);
3601        if (channelMask != 0) {
3602            ALOGV("loadInChannels() adding channelMask %04x", channelMask);
3603            profile->mChannelMasks.add(channelMask);
3604        }
3605        str = strtok(NULL, "|");
3606    }
3607    return;
3608}
3609
3610void AudioPolicyManagerBase::loadOutChannels(char *name, IOProfile *profile)
3611{
3612    const char *str = strtok(name, "|");
3613
3614    ALOGV("loadOutChannels() %s", name);
3615
3616    // by convention, "0' in the first entry in mChannelMasks indicates the supported channel
3617    // masks should be read from the output stream after it is opened for the first time
3618    if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
3619        profile->mChannelMasks.add((audio_channel_mask_t)0);
3620        return;
3621    }
3622
3623    while (str != NULL) {
3624        audio_channel_mask_t channelMask =
3625                (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable,
3626                                                   ARRAY_SIZE(sOutChannelsNameToEnumTable),
3627                                                   str);
3628        if (channelMask != 0) {
3629            profile->mChannelMasks.add(channelMask);
3630        }
3631        str = strtok(NULL, "|");
3632    }
3633    return;
3634}
3635
3636status_t AudioPolicyManagerBase::loadInput(cnode *root, HwModule *module)
3637{
3638    cnode *node = root->first_child;
3639
3640    IOProfile *profile = new IOProfile(module);
3641
3642    while (node) {
3643        if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) {
3644            loadSamplingRates((char *)node->value, profile);
3645        } else if (strcmp(node->name, FORMATS_TAG) == 0) {
3646            loadFormats((char *)node->value, profile);
3647        } else if (strcmp(node->name, CHANNELS_TAG) == 0) {
3648            loadInChannels((char *)node->value, profile);
3649        } else if (strcmp(node->name, DEVICES_TAG) == 0) {
3650            profile->mSupportedDevices = parseDeviceNames((char *)node->value);
3651        }
3652        node = node->next;
3653    }
3654    ALOGW_IF(profile->mSupportedDevices == AUDIO_DEVICE_NONE,
3655            "loadInput() invalid supported devices");
3656    ALOGW_IF(profile->mChannelMasks.size() == 0,
3657            "loadInput() invalid supported channel masks");
3658    ALOGW_IF(profile->mSamplingRates.size() == 0,
3659            "loadInput() invalid supported sampling rates");
3660    ALOGW_IF(profile->mFormats.size() == 0,
3661            "loadInput() invalid supported formats");
3662    if ((profile->mSupportedDevices != AUDIO_DEVICE_NONE) &&
3663            (profile->mChannelMasks.size() != 0) &&
3664            (profile->mSamplingRates.size() != 0) &&
3665            (profile->mFormats.size() != 0)) {
3666
3667        ALOGV("loadInput() adding input mSupportedDevices %04x", profile->mSupportedDevices);
3668
3669        module->mInputProfiles.add(profile);
3670        return NO_ERROR;
3671    } else {
3672        delete profile;
3673        return BAD_VALUE;
3674    }
3675}
3676
3677status_t AudioPolicyManagerBase::loadOutput(cnode *root, HwModule *module)
3678{
3679    cnode *node = root->first_child;
3680
3681    IOProfile *profile = new IOProfile(module);
3682
3683    while (node) {
3684        if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) {
3685            loadSamplingRates((char *)node->value, profile);
3686        } else if (strcmp(node->name, FORMATS_TAG) == 0) {
3687            loadFormats((char *)node->value, profile);
3688        } else if (strcmp(node->name, CHANNELS_TAG) == 0) {
3689            loadOutChannels((char *)node->value, profile);
3690        } else if (strcmp(node->name, DEVICES_TAG) == 0) {
3691            profile->mSupportedDevices = parseDeviceNames((char *)node->value);
3692        } else if (strcmp(node->name, FLAGS_TAG) == 0) {
3693            profile->mFlags = parseFlagNames((char *)node->value);
3694        }
3695        node = node->next;
3696    }
3697    ALOGW_IF(profile->mSupportedDevices == AUDIO_DEVICE_NONE,
3698            "loadOutput() invalid supported devices");
3699    ALOGW_IF(profile->mChannelMasks.size() == 0,
3700            "loadOutput() invalid supported channel masks");
3701    ALOGW_IF(profile->mSamplingRates.size() == 0,
3702            "loadOutput() invalid supported sampling rates");
3703    ALOGW_IF(profile->mFormats.size() == 0,
3704            "loadOutput() invalid supported formats");
3705    if ((profile->mSupportedDevices != AUDIO_DEVICE_NONE) &&
3706            (profile->mChannelMasks.size() != 0) &&
3707            (profile->mSamplingRates.size() != 0) &&
3708            (profile->mFormats.size() != 0)) {
3709
3710        ALOGV("loadOutput() adding output mSupportedDevices %04x, mFlags %04x",
3711              profile->mSupportedDevices, profile->mFlags);
3712
3713        module->mOutputProfiles.add(profile);
3714        return NO_ERROR;
3715    } else {
3716        delete profile;
3717        return BAD_VALUE;
3718    }
3719}
3720
3721void AudioPolicyManagerBase::loadHwModule(cnode *root)
3722{
3723    cnode *node = config_find(root, OUTPUTS_TAG);
3724    status_t status = NAME_NOT_FOUND;
3725
3726    HwModule *module = new HwModule(root->name);
3727
3728    if (node != NULL) {
3729        if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_A2DP) == 0) {
3730            mHasA2dp = true;
3731        } else if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_USB) == 0) {
3732            mHasUsb = true;
3733        } else if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX) == 0) {
3734            mHasRemoteSubmix = true;
3735        }
3736
3737        node = node->first_child;
3738        while (node) {
3739            ALOGV("loadHwModule() loading output %s", node->name);
3740            status_t tmpStatus = loadOutput(node, module);
3741            if (status == NAME_NOT_FOUND || status == NO_ERROR) {
3742                status = tmpStatus;
3743            }
3744            node = node->next;
3745        }
3746    }
3747    node = config_find(root, INPUTS_TAG);
3748    if (node != NULL) {
3749        node = node->first_child;
3750        while (node) {
3751            ALOGV("loadHwModule() loading input %s", node->name);
3752            status_t tmpStatus = loadInput(node, module);
3753            if (status == NAME_NOT_FOUND || status == NO_ERROR) {
3754                status = tmpStatus;
3755            }
3756            node = node->next;
3757        }
3758    }
3759    if (status == NO_ERROR) {
3760        mHwModules.add(module);
3761    } else {
3762        delete module;
3763    }
3764}
3765
3766void AudioPolicyManagerBase::loadHwModules(cnode *root)
3767{
3768    cnode *node = config_find(root, AUDIO_HW_MODULE_TAG);
3769    if (node == NULL) {
3770        return;
3771    }
3772
3773    node = node->first_child;
3774    while (node) {
3775        ALOGV("loadHwModules() loading module %s", node->name);
3776        loadHwModule(node);
3777        node = node->next;
3778    }
3779}
3780
3781void AudioPolicyManagerBase::loadGlobalConfig(cnode *root)
3782{
3783    cnode *node = config_find(root, GLOBAL_CONFIG_TAG);
3784    if (node == NULL) {
3785        return;
3786    }
3787    node = node->first_child;
3788    while (node) {
3789        if (strcmp(ATTACHED_OUTPUT_DEVICES_TAG, node->name) == 0) {
3790            mAttachedOutputDevices = parseDeviceNames((char *)node->value);
3791            ALOGW_IF(mAttachedOutputDevices == AUDIO_DEVICE_NONE,
3792                    "loadGlobalConfig() no attached output devices");
3793            ALOGV("loadGlobalConfig() mAttachedOutputDevices %04x", mAttachedOutputDevices);
3794        } else if (strcmp(DEFAULT_OUTPUT_DEVICE_TAG, node->name) == 0) {
3795            mDefaultOutputDevice = (audio_devices_t)stringToEnum(sDeviceNameToEnumTable,
3796                                              ARRAY_SIZE(sDeviceNameToEnumTable),
3797                                              (char *)node->value);
3798            ALOGW_IF(mDefaultOutputDevice == AUDIO_DEVICE_NONE,
3799                    "loadGlobalConfig() default device not specified");
3800            ALOGV("loadGlobalConfig() mDefaultOutputDevice %04x", mDefaultOutputDevice);
3801        } else if (strcmp(ATTACHED_INPUT_DEVICES_TAG, node->name) == 0) {
3802            mAvailableInputDevices = parseDeviceNames((char *)node->value) & ~AUDIO_DEVICE_BIT_IN;
3803            ALOGV("loadGlobalConfig() mAvailableInputDevices %04x", mAvailableInputDevices);
3804        }
3805        node = node->next;
3806    }
3807}
3808
3809status_t AudioPolicyManagerBase::loadAudioPolicyConfig(const char *path)
3810{
3811    cnode *root;
3812    char *data;
3813
3814    data = (char *)load_file(path, NULL);
3815    if (data == NULL) {
3816        return -ENODEV;
3817    }
3818    root = config_node("", "");
3819    config_load(root, data);
3820
3821    loadGlobalConfig(root);
3822    loadHwModules(root);
3823
3824    config_free(root);
3825    free(root);
3826    free(data);
3827
3828    ALOGI("loadAudioPolicyConfig() loaded %s\n", path);
3829
3830    return NO_ERROR;
3831}
3832
3833void AudioPolicyManagerBase::defaultAudioPolicyConfig(void)
3834{
3835    HwModule *module;
3836    IOProfile *profile;
3837
3838    mDefaultOutputDevice = AUDIO_DEVICE_OUT_SPEAKER;
3839    mAttachedOutputDevices = AUDIO_DEVICE_OUT_SPEAKER;
3840    mAvailableInputDevices = AUDIO_DEVICE_IN_BUILTIN_MIC & ~AUDIO_DEVICE_BIT_IN;
3841
3842    module = new HwModule("primary");
3843
3844    profile = new IOProfile(module);
3845    profile->mSamplingRates.add(44100);
3846    profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT);
3847    profile->mChannelMasks.add(AUDIO_CHANNEL_OUT_STEREO);
3848    profile->mSupportedDevices = AUDIO_DEVICE_OUT_SPEAKER;
3849    profile->mFlags = AUDIO_OUTPUT_FLAG_PRIMARY;
3850    module->mOutputProfiles.add(profile);
3851
3852    profile = new IOProfile(module);
3853    profile->mSamplingRates.add(8000);
3854    profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT);
3855    profile->mChannelMasks.add(AUDIO_CHANNEL_IN_MONO);
3856    profile->mSupportedDevices = AUDIO_DEVICE_IN_BUILTIN_MIC;
3857    module->mInputProfiles.add(profile);
3858
3859    mHwModules.add(module);
3860}
3861
3862}; // namespace android
3863