AudioPolicyManagerBase.cpp revision 1c65a49da0c89f75e528354ef02de5dc93a28232 
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#include <utils/Log.h>
20#include <hardware_legacy/AudioPolicyManagerBase.h>
21#include <hardware/audio_effect.h>
22#include <math.h>
23
24namespace android_audio_legacy {
25
26// ----------------------------------------------------------------------------
27// AudioPolicyInterface implementation
28// ----------------------------------------------------------------------------
29
30
31status_t AudioPolicyManagerBase::setDeviceConnectionState(AudioSystem::audio_devices device,
32                                                  AudioSystem::device_connection_state state,
33                                                  const char *device_address)
34{
35
36    LOGV("setDeviceConnectionState() device: %x, state %d, address %s", device, state, device_address);
37
38    // connect/disconnect only 1 device at a time
39    if (AudioSystem::popCount(device) != 1) return BAD_VALUE;
40
41    if (strlen(device_address) >= MAX_DEVICE_ADDRESS_LEN) {
42        LOGE("setDeviceConnectionState() invalid address: %s", device_address);
43        return BAD_VALUE;
44    }
45
46    // handle output devices
47    if (AudioSystem::isOutputDevice(device)) {
48
49#ifndef WITH_A2DP
50        if (AudioSystem::isA2dpDevice(device)) {
51            LOGE("setDeviceConnectionState() invalid device: %x", device);
52            return BAD_VALUE;
53        }
54#endif
55
56        switch (state)
57        {
58        // handle output device connection
59        case AudioSystem::DEVICE_STATE_AVAILABLE:
60            if (mAvailableOutputDevices & device) {
61                LOGW("setDeviceConnectionState() device already connected: %x", device);
62                return INVALID_OPERATION;
63            }
64            LOGV("setDeviceConnectionState() connecting device %x", device);
65
66            // register new device as available
67            mAvailableOutputDevices |= device;
68
69#ifdef WITH_A2DP
70            // handle A2DP device connection
71            if (AudioSystem::isA2dpDevice(device)) {
72                status_t status = handleA2dpConnection(device, device_address);
73                if (status != NO_ERROR) {
74                    mAvailableOutputDevices &= ~device;
75                    return status;
76                }
77            } else
78#endif
79            {
80                if (AudioSystem::isBluetoothScoDevice(device)) {
81                    LOGV("setDeviceConnectionState() BT SCO  device, address %s", device_address);
82                    // keep track of SCO device address
83                    mScoDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
84                }
85            }
86            break;
87        // handle output device disconnection
88        case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
89            if (!(mAvailableOutputDevices & device)) {
90                LOGW("setDeviceConnectionState() device not connected: %x", device);
91                return INVALID_OPERATION;
92            }
93
94
95            LOGV("setDeviceConnectionState() disconnecting device %x", device);
96            // remove device from available output devices
97            mAvailableOutputDevices &= ~device;
98
99#ifdef WITH_A2DP
100            // handle A2DP device disconnection
101            if (AudioSystem::isA2dpDevice(device)) {
102                status_t status = handleA2dpDisconnection(device, device_address);
103                if (status != NO_ERROR) {
104                    mAvailableOutputDevices |= device;
105                    return status;
106                }
107            } else
108#endif
109            {
110                if (AudioSystem::isBluetoothScoDevice(device)) {
111                    mScoDeviceAddress = "";
112                }
113            }
114            } break;
115
116        default:
117            LOGE("setDeviceConnectionState() invalid state: %x", state);
118            return BAD_VALUE;
119        }
120
121        // request routing change if necessary
122        uint32_t newDevice = getNewDevice(mHardwareOutput, false);
123#ifdef WITH_A2DP
124        checkA2dpSuspend();
125        checkOutputForAllStrategies();
126        // A2DP outputs must be closed after checkOutputForAllStrategies() is executed
127        if (state == AudioSystem::DEVICE_STATE_UNAVAILABLE && AudioSystem::isA2dpDevice(device)) {
128            closeA2dpOutputs();
129        }
130#endif
131        updateDeviceForStrategy();
132        setOutputDevice(mHardwareOutput, newDevice);
133
134        if (device == AudioSystem::DEVICE_OUT_WIRED_HEADSET) {
135            device = AudioSystem::DEVICE_IN_WIRED_HEADSET;
136        } else if (device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO ||
137                   device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET ||
138                   device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT) {
139            device = AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET;
140        } else {
141            return NO_ERROR;
142        }
143    }
144    // handle input devices
145    if (AudioSystem::isInputDevice(device)) {
146
147        switch (state)
148        {
149        // handle input device connection
150        case AudioSystem::DEVICE_STATE_AVAILABLE: {
151            if (mAvailableInputDevices & device) {
152                LOGW("setDeviceConnectionState() device already connected: %d", device);
153                return INVALID_OPERATION;
154            }
155            mAvailableInputDevices |= device;
156            }
157            break;
158
159        // handle input device disconnection
160        case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
161            if (!(mAvailableInputDevices & device)) {
162                LOGW("setDeviceConnectionState() device not connected: %d", device);
163                return INVALID_OPERATION;
164            }
165            mAvailableInputDevices &= ~device;
166            } break;
167
168        default:
169            LOGE("setDeviceConnectionState() invalid state: %x", state);
170            return BAD_VALUE;
171        }
172
173        audio_io_handle_t activeInput = getActiveInput();
174        if (activeInput != 0) {
175            AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
176            uint32_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
177            if (newDevice != inputDesc->mDevice) {
178                LOGV("setDeviceConnectionState() changing device from %x to %x for input %d",
179                        inputDesc->mDevice, newDevice, activeInput);
180                inputDesc->mDevice = newDevice;
181                AudioParameter param = AudioParameter();
182                param.addInt(String8(AudioParameter::keyRouting), (int)newDevice);
183                mpClientInterface->setParameters(activeInput, param.toString());
184            }
185        }
186
187        return NO_ERROR;
188    }
189
190    LOGW("setDeviceConnectionState() invalid device: %x", device);
191    return BAD_VALUE;
192}
193
194AudioSystem::device_connection_state AudioPolicyManagerBase::getDeviceConnectionState(AudioSystem::audio_devices device,
195                                                  const char *device_address)
196{
197    AudioSystem::device_connection_state state = AudioSystem::DEVICE_STATE_UNAVAILABLE;
198    String8 address = String8(device_address);
199    if (AudioSystem::isOutputDevice(device)) {
200        if (device & mAvailableOutputDevices) {
201#ifdef WITH_A2DP
202            if (AudioSystem::isA2dpDevice(device) &&
203                address != "" && mA2dpDeviceAddress != address) {
204                return state;
205            }
206#endif
207            if (AudioSystem::isBluetoothScoDevice(device) &&
208                address != "" && mScoDeviceAddress != address) {
209                return state;
210            }
211            state = AudioSystem::DEVICE_STATE_AVAILABLE;
212        }
213    } else if (AudioSystem::isInputDevice(device)) {
214        if (device & mAvailableInputDevices) {
215            state = AudioSystem::DEVICE_STATE_AVAILABLE;
216        }
217    }
218
219    return state;
220}
221
222void AudioPolicyManagerBase::setPhoneState(int state)
223{
224    LOGV("setPhoneState() state %d", state);
225    uint32_t newDevice = 0;
226    if (state < 0 || state >= AudioSystem::NUM_MODES) {
227        LOGW("setPhoneState() invalid state %d", state);
228        return;
229    }
230
231    if (state == mPhoneState ) {
232        LOGW("setPhoneState() setting same state %d", state);
233        return;
234    }
235
236    // if leaving call state, handle special case of active streams
237    // pertaining to sonification strategy see handleIncallSonification()
238    if (isInCall()) {
239        LOGV("setPhoneState() in call state management: new state is %d", state);
240        for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
241            handleIncallSonification(stream, false, true);
242        }
243    }
244
245    // store previous phone state for management of sonification strategy below
246    int oldState = mPhoneState;
247    mPhoneState = state;
248    bool force = false;
249
250    // are we entering or starting a call
251    if (!isStateInCall(oldState) && isStateInCall(state)) {
252        LOGV("  Entering call in setPhoneState()");
253        // force routing command to audio hardware when starting a call
254        // even if no device change is needed
255        force = true;
256    } else if (isStateInCall(oldState) && !isStateInCall(state)) {
257        LOGV("  Exiting call in setPhoneState()");
258        // force routing command to audio hardware when exiting a call
259        // even if no device change is needed
260        force = true;
261    } else if (isStateInCall(state) && (state != oldState)) {
262        LOGV("  Switching between telephony and VoIP in setPhoneState()");
263        // force routing command to audio hardware when switching between telephony and VoIP
264        // even if no device change is needed
265        force = true;
266    }
267
268    // check for device and output changes triggered by new phone state
269    newDevice = getNewDevice(mHardwareOutput, false);
270#ifdef WITH_A2DP
271    checkA2dpSuspend();
272    checkOutputForAllStrategies();
273#endif
274    updateDeviceForStrategy();
275
276    AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mHardwareOutput);
277
278    // force routing command to audio hardware when ending call
279    // even if no device change is needed
280    if (isStateInCall(oldState) && newDevice == 0) {
281        newDevice = hwOutputDesc->device();
282    }
283
284    // when changing from ring tone to in call mode, mute the ringing tone
285    // immediately and delay the route change to avoid sending the ring tone
286    // tail into the earpiece or headset.
287    int delayMs = 0;
288    if (isStateInCall(state) && oldState == AudioSystem::MODE_RINGTONE) {
289        // delay the device change command by twice the output latency to have some margin
290        // and be sure that audio buffers not yet affected by the mute are out when
291        // we actually apply the route change
292        delayMs = hwOutputDesc->mLatency*2;
293        setStreamMute(AudioSystem::RING, true, mHardwareOutput);
294    }
295
296    // change routing is necessary
297    setOutputDevice(mHardwareOutput, newDevice, force, delayMs);
298
299    // if entering in call state, handle special case of active streams
300    // pertaining to sonification strategy see handleIncallSonification()
301    if (isStateInCall(state)) {
302        LOGV("setPhoneState() in call state management: new state is %d", state);
303        // unmute the ringing tone after a sufficient delay if it was muted before
304        // setting output device above
305        if (oldState == AudioSystem::MODE_RINGTONE) {
306            setStreamMute(AudioSystem::RING, false, mHardwareOutput, MUTE_TIME_MS);
307        }
308        for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
309            handleIncallSonification(stream, true, true);
310        }
311    }
312
313    // Flag that ringtone volume must be limited to music volume until we exit MODE_RINGTONE
314    if (state == AudioSystem::MODE_RINGTONE &&
315        isStreamActive(AudioSystem::MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY)) {
316        mLimitRingtoneVolume = true;
317    } else {
318        mLimitRingtoneVolume = false;
319    }
320}
321
322void AudioPolicyManagerBase::setRingerMode(uint32_t mode, uint32_t mask)
323{
324    LOGV("setRingerMode() mode %x, mask %x", mode, mask);
325
326    mRingerMode = mode;
327}
328
329void AudioPolicyManagerBase::setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config)
330{
331    LOGV("setForceUse() usage %d, config %d, mPhoneState %d", usage, config, mPhoneState);
332
333    bool forceVolumeReeval = false;
334    switch(usage) {
335    case AudioSystem::FOR_COMMUNICATION:
336        if (config != AudioSystem::FORCE_SPEAKER && config != AudioSystem::FORCE_BT_SCO &&
337            config != AudioSystem::FORCE_NONE) {
338            LOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config);
339            return;
340        }
341        forceVolumeReeval = true;
342        mForceUse[usage] = config;
343        break;
344    case AudioSystem::FOR_MEDIA:
345        if (config != AudioSystem::FORCE_HEADPHONES && config != AudioSystem::FORCE_BT_A2DP &&
346            config != AudioSystem::FORCE_WIRED_ACCESSORY &&
347            config != AudioSystem::FORCE_ANALOG_DOCK &&
348            config != AudioSystem::FORCE_DIGITAL_DOCK && config != AudioSystem::FORCE_NONE) {
349            LOGW("setForceUse() invalid config %d for FOR_MEDIA", config);
350            return;
351        }
352        mForceUse[usage] = config;
353        break;
354    case AudioSystem::FOR_RECORD:
355        if (config != AudioSystem::FORCE_BT_SCO && config != AudioSystem::FORCE_WIRED_ACCESSORY &&
356            config != AudioSystem::FORCE_NONE) {
357            LOGW("setForceUse() invalid config %d for FOR_RECORD", config);
358            return;
359        }
360        mForceUse[usage] = config;
361        break;
362    case AudioSystem::FOR_DOCK:
363        if (config != AudioSystem::FORCE_NONE && config != AudioSystem::FORCE_BT_CAR_DOCK &&
364            config != AudioSystem::FORCE_BT_DESK_DOCK &&
365            config != AudioSystem::FORCE_WIRED_ACCESSORY &&
366            config != AudioSystem::FORCE_ANALOG_DOCK &&
367            config != AudioSystem::FORCE_DIGITAL_DOCK) {
368            LOGW("setForceUse() invalid config %d for FOR_DOCK", config);
369        }
370        forceVolumeReeval = true;
371        mForceUse[usage] = config;
372        break;
373    default:
374        LOGW("setForceUse() invalid usage %d", usage);
375        break;
376    }
377
378    // check for device and output changes triggered by new phone state
379    uint32_t newDevice = getNewDevice(mHardwareOutput, false);
380#ifdef WITH_A2DP
381    checkA2dpSuspend();
382    checkOutputForAllStrategies();
383#endif
384    updateDeviceForStrategy();
385    setOutputDevice(mHardwareOutput, newDevice);
386    if (forceVolumeReeval) {
387        applyStreamVolumes(mHardwareOutput, newDevice, 0, true);
388    }
389
390    audio_io_handle_t activeInput = getActiveInput();
391    if (activeInput != 0) {
392        AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
393        newDevice = getDeviceForInputSource(inputDesc->mInputSource);
394        if (newDevice != inputDesc->mDevice) {
395            LOGV("setForceUse() changing device from %x to %x for input %d",
396                    inputDesc->mDevice, newDevice, activeInput);
397            inputDesc->mDevice = newDevice;
398            AudioParameter param = AudioParameter();
399            param.addInt(String8(AudioParameter::keyRouting), (int)newDevice);
400            mpClientInterface->setParameters(activeInput, param.toString());
401        }
402    }
403
404}
405
406AudioSystem::forced_config AudioPolicyManagerBase::getForceUse(AudioSystem::force_use usage)
407{
408    return mForceUse[usage];
409}
410
411void AudioPolicyManagerBase::setSystemProperty(const char* property, const char* value)
412{
413    LOGV("setSystemProperty() property %s, value %s", property, value);
414    if (strcmp(property, "ro.camera.sound.forced") == 0) {
415        if (atoi(value)) {
416            LOGV("ENFORCED_AUDIBLE cannot be muted");
417            mStreams[AudioSystem::ENFORCED_AUDIBLE].mCanBeMuted = false;
418        } else {
419            LOGV("ENFORCED_AUDIBLE can be muted");
420            mStreams[AudioSystem::ENFORCED_AUDIBLE].mCanBeMuted = true;
421        }
422    }
423}
424
425audio_io_handle_t AudioPolicyManagerBase::getOutput(AudioSystem::stream_type stream,
426                                    uint32_t samplingRate,
427                                    uint32_t format,
428                                    uint32_t channels,
429                                    AudioSystem::output_flags flags)
430{
431    audio_io_handle_t output = 0;
432    uint32_t latency = 0;
433    routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream);
434    uint32_t device = getDeviceForStrategy(strategy);
435    LOGV("getOutput() stream %d, samplingRate %d, format %d, channels %x, flags %x", stream, samplingRate, format, channels, flags);
436
437#ifdef AUDIO_POLICY_TEST
438    if (mCurOutput != 0) {
439        LOGV("getOutput() test output mCurOutput %d, samplingRate %d, format %d, channels %x, mDirectOutput %d",
440                mCurOutput, mTestSamplingRate, mTestFormat, mTestChannels, mDirectOutput);
441
442        if (mTestOutputs[mCurOutput] == 0) {
443            LOGV("getOutput() opening test output");
444            AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor();
445            outputDesc->mDevice = mTestDevice;
446            outputDesc->mSamplingRate = mTestSamplingRate;
447            outputDesc->mFormat = mTestFormat;
448            outputDesc->mChannels = mTestChannels;
449            outputDesc->mLatency = mTestLatencyMs;
450            outputDesc->mFlags = (AudioSystem::output_flags)(mDirectOutput ? AudioSystem::OUTPUT_FLAG_DIRECT : 0);
451            outputDesc->mRefCount[stream] = 0;
452            mTestOutputs[mCurOutput] = mpClientInterface->openOutput(&outputDesc->mDevice,
453                                            &outputDesc->mSamplingRate,
454                                            &outputDesc->mFormat,
455                                            &outputDesc->mChannels,
456                                            &outputDesc->mLatency,
457                                            outputDesc->mFlags);
458            if (mTestOutputs[mCurOutput]) {
459                AudioParameter outputCmd = AudioParameter();
460                outputCmd.addInt(String8("set_id"),mCurOutput);
461                mpClientInterface->setParameters(mTestOutputs[mCurOutput],outputCmd.toString());
462                addOutput(mTestOutputs[mCurOutput], outputDesc);
463            }
464        }
465        return mTestOutputs[mCurOutput];
466    }
467#endif //AUDIO_POLICY_TEST
468
469    // open a direct output if required by specified parameters
470    if (needsDirectOuput(stream, samplingRate, format, channels, flags, device)) {
471
472        LOGV("getOutput() opening direct output device %x", device);
473        AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor();
474        outputDesc->mDevice = device;
475        outputDesc->mSamplingRate = samplingRate;
476        outputDesc->mFormat = format;
477        outputDesc->mChannels = channels;
478        outputDesc->mLatency = 0;
479        outputDesc->mFlags = (AudioSystem::output_flags)(flags | AudioSystem::OUTPUT_FLAG_DIRECT);
480        outputDesc->mRefCount[stream] = 0;
481        outputDesc->mStopTime[stream] = 0;
482        output = mpClientInterface->openOutput(&outputDesc->mDevice,
483                                        &outputDesc->mSamplingRate,
484                                        &outputDesc->mFormat,
485                                        &outputDesc->mChannels,
486                                        &outputDesc->mLatency,
487                                        outputDesc->mFlags);
488
489        // only accept an output with the requeted parameters
490        if (output == 0 ||
491            (samplingRate != 0 && samplingRate != outputDesc->mSamplingRate) ||
492            (format != 0 && format != outputDesc->mFormat) ||
493            (channels != 0 && channels != outputDesc->mChannels)) {
494            LOGV("getOutput() failed opening direct output: samplingRate %d, format %d, channels %d",
495                    samplingRate, format, channels);
496            if (output != 0) {
497                mpClientInterface->closeOutput(output);
498            }
499            delete outputDesc;
500            return 0;
501        }
502        addOutput(output, outputDesc);
503        return output;
504    }
505
506    if (channels != 0 && channels != AudioSystem::CHANNEL_OUT_MONO &&
507        channels != AudioSystem::CHANNEL_OUT_STEREO) {
508        return 0;
509    }
510    // open a non direct output
511
512    // get which output is suitable for the specified stream. The actual routing change will happen
513    // when startOutput() will be called
514    uint32_t a2dpDevice = device & AudioSystem::DEVICE_OUT_ALL_A2DP;
515    if (AudioSystem::popCount((AudioSystem::audio_devices)device) == 2) {
516#ifdef WITH_A2DP
517        if (a2dpUsedForSonification() && a2dpDevice != 0) {
518            // if playing on 2 devices among which one is A2DP, use duplicated output
519            LOGV("getOutput() using duplicated output");
520            LOGW_IF((mA2dpOutput == 0), "getOutput() A2DP device in multiple %x selected but A2DP output not opened", device);
521            output = mDuplicatedOutput;
522        } else
523#endif
524        {
525            // if playing on 2 devices among which none is A2DP, use hardware output
526            output = mHardwareOutput;
527        }
528        LOGV("getOutput() using output %d for 2 devices %x", output, device);
529    } else {
530#ifdef WITH_A2DP
531        if (a2dpDevice != 0) {
532            // if playing on A2DP device, use a2dp output
533            LOGW_IF((mA2dpOutput == 0), "getOutput() A2DP device %x selected but A2DP output not opened", device);
534            output = mA2dpOutput;
535        } else
536#endif
537        {
538            // if playing on not A2DP device, use hardware output
539            output = mHardwareOutput;
540        }
541    }
542
543
544    LOGW_IF((output ==0), "getOutput() could not find output for stream %d, samplingRate %d, format %d, channels %x, flags %x",
545                stream, samplingRate, format, channels, flags);
546
547    return output;
548}
549
550status_t AudioPolicyManagerBase::startOutput(audio_io_handle_t output,
551                                             AudioSystem::stream_type stream,
552                                             int session)
553{
554    LOGV("startOutput() output %d, stream %d, session %d", output, stream, session);
555    ssize_t index = mOutputs.indexOfKey(output);
556    if (index < 0) {
557        LOGW("startOutput() unknow output %d", output);
558        return BAD_VALUE;
559    }
560
561    AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
562    routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream);
563
564#ifdef WITH_A2DP
565    if (mA2dpOutput != 0  && !a2dpUsedForSonification() && strategy == STRATEGY_SONIFICATION) {
566        setStrategyMute(STRATEGY_MEDIA, true, mA2dpOutput);
567    }
568#endif
569
570    // incremenent usage count for this stream on the requested output:
571    // NOTE that the usage count is the same for duplicated output and hardware output which is
572    // necassary for a correct control of hardware output routing by startOutput() and stopOutput()
573    outputDesc->changeRefCount(stream, 1);
574
575    setOutputDevice(output, getNewDevice(output));
576
577    // handle special case for sonification while in call
578    if (isInCall()) {
579        handleIncallSonification(stream, true, false);
580    }
581
582    // apply volume rules for current stream and device if necessary
583    checkAndSetVolume(stream, mStreams[stream].mIndexCur, output, outputDesc->device());
584
585    return NO_ERROR;
586}
587
588status_t AudioPolicyManagerBase::stopOutput(audio_io_handle_t output,
589                                            AudioSystem::stream_type stream,
590                                            int session)
591{
592    LOGV("stopOutput() output %d, stream %d, session %d", output, stream, session);
593    ssize_t index = mOutputs.indexOfKey(output);
594    if (index < 0) {
595        LOGW("stopOutput() unknow output %d", output);
596        return BAD_VALUE;
597    }
598
599    AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
600    routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream);
601
602    // handle special case for sonification while in call
603    if (isInCall()) {
604        handleIncallSonification(stream, false, false);
605    }
606
607    if (outputDesc->mRefCount[stream] > 0) {
608        // decrement usage count of this stream on the output
609        outputDesc->changeRefCount(stream, -1);
610        // store time at which the stream was stopped - see isStreamActive()
611        outputDesc->mStopTime[stream] = systemTime();
612
613        setOutputDevice(output, getNewDevice(output), false, outputDesc->mLatency*2);
614
615#ifdef WITH_A2DP
616        if (mA2dpOutput != 0 && !a2dpUsedForSonification() &&
617                strategy == STRATEGY_SONIFICATION) {
618            setStrategyMute(STRATEGY_MEDIA,
619                            false,
620                            mA2dpOutput,
621                            mOutputs.valueFor(mHardwareOutput)->mLatency*2);
622        }
623#endif
624        if (output != mHardwareOutput) {
625            setOutputDevice(mHardwareOutput, getNewDevice(mHardwareOutput), true);
626        }
627        return NO_ERROR;
628    } else {
629        LOGW("stopOutput() refcount is already 0 for output %d", output);
630        return INVALID_OPERATION;
631    }
632}
633
634void AudioPolicyManagerBase::releaseOutput(audio_io_handle_t output)
635{
636    LOGV("releaseOutput() %d", output);
637    ssize_t index = mOutputs.indexOfKey(output);
638    if (index < 0) {
639        LOGW("releaseOutput() releasing unknown output %d", output);
640        return;
641    }
642
643#ifdef AUDIO_POLICY_TEST
644    int testIndex = testOutputIndex(output);
645    if (testIndex != 0) {
646        AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
647        if (outputDesc->refCount() == 0) {
648            mpClientInterface->closeOutput(output);
649            delete mOutputs.valueAt(index);
650            mOutputs.removeItem(output);
651            mTestOutputs[testIndex] = 0;
652        }
653        return;
654    }
655#endif //AUDIO_POLICY_TEST
656
657    if (mOutputs.valueAt(index)->mFlags & AudioSystem::OUTPUT_FLAG_DIRECT) {
658        mpClientInterface->closeOutput(output);
659        delete mOutputs.valueAt(index);
660        mOutputs.removeItem(output);
661    }
662}
663
664audio_io_handle_t AudioPolicyManagerBase::getInput(int inputSource,
665                                    uint32_t samplingRate,
666                                    uint32_t format,
667                                    uint32_t channels,
668                                    AudioSystem::audio_in_acoustics acoustics)
669{
670    audio_io_handle_t input = 0;
671    uint32_t device = getDeviceForInputSource(inputSource);
672
673    LOGV("getInput() inputSource %d, samplingRate %d, format %d, channels %x, acoustics %x", inputSource, samplingRate, format, channels, acoustics);
674
675    if (device == 0) {
676        return 0;
677    }
678
679    // adapt channel selection to input source
680    switch(inputSource) {
681    case AUDIO_SOURCE_VOICE_UPLINK:
682        channels = AudioSystem::CHANNEL_IN_VOICE_UPLINK;
683        break;
684    case AUDIO_SOURCE_VOICE_DOWNLINK:
685        channels = AudioSystem::CHANNEL_IN_VOICE_DNLINK;
686        break;
687    case AUDIO_SOURCE_VOICE_CALL:
688        channels = (AudioSystem::CHANNEL_IN_VOICE_UPLINK | AudioSystem::CHANNEL_IN_VOICE_DNLINK);
689        break;
690    default:
691        break;
692    }
693
694    AudioInputDescriptor *inputDesc = new AudioInputDescriptor();
695
696    inputDesc->mInputSource = inputSource;
697    inputDesc->mDevice = device;
698    inputDesc->mSamplingRate = samplingRate;
699    inputDesc->mFormat = format;
700    inputDesc->mChannels = channels;
701    inputDesc->mAcoustics = acoustics;
702    inputDesc->mRefCount = 0;
703    input = mpClientInterface->openInput(&inputDesc->mDevice,
704                                    &inputDesc->mSamplingRate,
705                                    &inputDesc->mFormat,
706                                    &inputDesc->mChannels,
707                                    inputDesc->mAcoustics);
708
709    // only accept input with the exact requested set of parameters
710    if (input == 0 ||
711        (samplingRate != inputDesc->mSamplingRate) ||
712        (format != inputDesc->mFormat) ||
713        (channels != inputDesc->mChannels)) {
714        LOGV("getInput() failed opening input: samplingRate %d, format %d, channels %d",
715                samplingRate, format, channels);
716        if (input != 0) {
717            mpClientInterface->closeInput(input);
718        }
719        delete inputDesc;
720        return 0;
721    }
722    mInputs.add(input, inputDesc);
723    return input;
724}
725
726status_t AudioPolicyManagerBase::startInput(audio_io_handle_t input)
727{
728    LOGV("startInput() input %d", input);
729    ssize_t index = mInputs.indexOfKey(input);
730    if (index < 0) {
731        LOGW("startInput() unknow input %d", input);
732        return BAD_VALUE;
733    }
734    AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
735
736#ifdef AUDIO_POLICY_TEST
737    if (mTestInput == 0)
738#endif //AUDIO_POLICY_TEST
739    {
740        // refuse 2 active AudioRecord clients at the same time
741        if (getActiveInput() != 0) {
742            LOGW("startInput() input %d failed: other input already started", input);
743            return INVALID_OPERATION;
744        }
745    }
746
747    AudioParameter param = AudioParameter();
748    param.addInt(String8(AudioParameter::keyRouting), (int)inputDesc->mDevice);
749
750    param.addInt(String8(AudioParameter::keyInputSource), (int)inputDesc->mInputSource);
751    LOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource);
752
753    mpClientInterface->setParameters(input, param.toString());
754
755    inputDesc->mRefCount = 1;
756    return NO_ERROR;
757}
758
759status_t AudioPolicyManagerBase::stopInput(audio_io_handle_t input)
760{
761    LOGV("stopInput() input %d", input);
762    ssize_t index = mInputs.indexOfKey(input);
763    if (index < 0) {
764        LOGW("stopInput() unknow input %d", input);
765        return BAD_VALUE;
766    }
767    AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
768
769    if (inputDesc->mRefCount == 0) {
770        LOGW("stopInput() input %d already stopped", input);
771        return INVALID_OPERATION;
772    } else {
773        AudioParameter param = AudioParameter();
774        param.addInt(String8(AudioParameter::keyRouting), 0);
775        mpClientInterface->setParameters(input, param.toString());
776        inputDesc->mRefCount = 0;
777        return NO_ERROR;
778    }
779}
780
781void AudioPolicyManagerBase::releaseInput(audio_io_handle_t input)
782{
783    LOGV("releaseInput() %d", input);
784    ssize_t index = mInputs.indexOfKey(input);
785    if (index < 0) {
786        LOGW("releaseInput() releasing unknown input %d", input);
787        return;
788    }
789    mpClientInterface->closeInput(input);
790    delete mInputs.valueAt(index);
791    mInputs.removeItem(input);
792    LOGV("releaseInput() exit");
793}
794
795void AudioPolicyManagerBase::initStreamVolume(AudioSystem::stream_type stream,
796                                            int indexMin,
797                                            int indexMax)
798{
799    LOGV("initStreamVolume() stream %d, min %d, max %d", stream , indexMin, indexMax);
800    if (indexMin < 0 || indexMin >= indexMax) {
801        LOGW("initStreamVolume() invalid index limits for stream %d, min %d, max %d", stream , indexMin, indexMax);
802        return;
803    }
804    mStreams[stream].mIndexMin = indexMin;
805    mStreams[stream].mIndexMax = indexMax;
806}
807
808status_t AudioPolicyManagerBase::setStreamVolumeIndex(AudioSystem::stream_type stream, int index)
809{
810
811    if ((index < mStreams[stream].mIndexMin) || (index > mStreams[stream].mIndexMax)) {
812        return BAD_VALUE;
813    }
814
815    // Force max volume if stream cannot be muted
816    if (!mStreams[stream].mCanBeMuted) index = mStreams[stream].mIndexMax;
817
818    LOGV("setStreamVolumeIndex() stream %d, index %d", stream, index);
819    mStreams[stream].mIndexCur = index;
820
821    // compute and apply stream volume on all outputs according to connected device
822    status_t status = NO_ERROR;
823    for (size_t i = 0; i < mOutputs.size(); i++) {
824        status_t volStatus = checkAndSetVolume(stream, index, mOutputs.keyAt(i), mOutputs.valueAt(i)->device());
825        if (volStatus != NO_ERROR) {
826            status = volStatus;
827        }
828    }
829    return status;
830}
831
832status_t AudioPolicyManagerBase::getStreamVolumeIndex(AudioSystem::stream_type stream, int *index)
833{
834    if (index == 0) {
835        return BAD_VALUE;
836    }
837    LOGV("getStreamVolumeIndex() stream %d", stream);
838    *index =  mStreams[stream].mIndexCur;
839    return NO_ERROR;
840}
841
842audio_io_handle_t AudioPolicyManagerBase::getOutputForEffect(effect_descriptor_t *desc)
843{
844    LOGV("getOutputForEffect()");
845    // apply simple rule where global effects are attached to the same output as MUSIC streams
846    return getOutput(AudioSystem::MUSIC);
847}
848
849status_t AudioPolicyManagerBase::registerEffect(effect_descriptor_t *desc,
850                                audio_io_handle_t io,
851                                uint32_t strategy,
852                                int session,
853                                int id)
854{
855    ssize_t index = mOutputs.indexOfKey(io);
856    if (index < 0) {
857        index = mInputs.indexOfKey(io);
858        if (index < 0) {
859            LOGW("registerEffect() unknown io %d", io);
860            return INVALID_OPERATION;
861        }
862    }
863
864    if (mTotalEffectsCpuLoad + desc->cpuLoad > getMaxEffectsCpuLoad()) {
865        LOGW("registerEffect() CPU Load limit exceeded for Fx %s, CPU %f MIPS",
866                desc->name, (float)desc->cpuLoad/10);
867        return INVALID_OPERATION;
868    }
869    if (mTotalEffectsMemory + desc->memoryUsage > getMaxEffectsMemory()) {
870        LOGW("registerEffect() memory limit exceeded for Fx %s, Memory %d KB",
871                desc->name, desc->memoryUsage);
872        return INVALID_OPERATION;
873    }
874    mTotalEffectsCpuLoad += desc->cpuLoad;
875    mTotalEffectsMemory += desc->memoryUsage;
876    LOGV("registerEffect() effect %s, io %d, strategy %d session %d id %d",
877            desc->name, io, strategy, session, id);
878
879    LOGV("registerEffect() CPU %d, memory %d", desc->cpuLoad, desc->memoryUsage);
880    LOGV("  total CPU %d, total memory %d", mTotalEffectsCpuLoad, mTotalEffectsMemory);
881
882    EffectDescriptor *pDesc = new EffectDescriptor();
883    memcpy (&pDesc->mDesc, desc, sizeof(effect_descriptor_t));
884    pDesc->mIo = io;
885    pDesc->mStrategy = (routing_strategy)strategy;
886    pDesc->mSession = session;
887    mEffects.add(id, pDesc);
888
889    return NO_ERROR;
890}
891
892status_t AudioPolicyManagerBase::unregisterEffect(int id)
893{
894    ssize_t index = mEffects.indexOfKey(id);
895    if (index < 0) {
896        LOGW("unregisterEffect() unknown effect ID %d", id);
897        return INVALID_OPERATION;
898    }
899
900    EffectDescriptor *pDesc = mEffects.valueAt(index);
901
902    if (mTotalEffectsCpuLoad < pDesc->mDesc.cpuLoad) {
903        LOGW("unregisterEffect() CPU load %d too high for total %d",
904                pDesc->mDesc.cpuLoad, mTotalEffectsCpuLoad);
905        pDesc->mDesc.cpuLoad = mTotalEffectsCpuLoad;
906    }
907    mTotalEffectsCpuLoad -= pDesc->mDesc.cpuLoad;
908    if (mTotalEffectsMemory < pDesc->mDesc.memoryUsage) {
909        LOGW("unregisterEffect() memory %d too big for total %d",
910                pDesc->mDesc.memoryUsage, mTotalEffectsMemory);
911        pDesc->mDesc.memoryUsage = mTotalEffectsMemory;
912    }
913    mTotalEffectsMemory -= pDesc->mDesc.memoryUsage;
914    LOGV("unregisterEffect() effect %s, ID %d, CPU %d, memory %d",
915            pDesc->mDesc.name, id, pDesc->mDesc.cpuLoad, pDesc->mDesc.memoryUsage);
916    LOGV("  total CPU %d, total memory %d", mTotalEffectsCpuLoad, mTotalEffectsMemory);
917
918    mEffects.removeItem(id);
919    delete pDesc;
920
921    return NO_ERROR;
922}
923
924bool AudioPolicyManagerBase::isStreamActive(int stream, uint32_t inPastMs) const
925{
926    nsecs_t sysTime = systemTime();
927    for (size_t i = 0; i < mOutputs.size(); i++) {
928        if (mOutputs.valueAt(i)->mRefCount[stream] != 0 ||
929            ns2ms(sysTime - mOutputs.valueAt(i)->mStopTime[stream]) < inPastMs) {
930            return true;
931        }
932    }
933    return false;
934}
935
936
937status_t AudioPolicyManagerBase::dump(int fd)
938{
939    const size_t SIZE = 256;
940    char buffer[SIZE];
941    String8 result;
942
943    snprintf(buffer, SIZE, "\nAudioPolicyManager Dump: %p\n", this);
944    result.append(buffer);
945    snprintf(buffer, SIZE, " Hardware Output: %d\n", mHardwareOutput);
946    result.append(buffer);
947#ifdef WITH_A2DP
948    snprintf(buffer, SIZE, " A2DP Output: %d\n", mA2dpOutput);
949    result.append(buffer);
950    snprintf(buffer, SIZE, " Duplicated Output: %d\n", mDuplicatedOutput);
951    result.append(buffer);
952    snprintf(buffer, SIZE, " A2DP device address: %s\n", mA2dpDeviceAddress.string());
953    result.append(buffer);
954#endif
955    snprintf(buffer, SIZE, " SCO device address: %s\n", mScoDeviceAddress.string());
956    result.append(buffer);
957    snprintf(buffer, SIZE, " Output devices: %08x\n", mAvailableOutputDevices);
958    result.append(buffer);
959    snprintf(buffer, SIZE, " Input devices: %08x\n", mAvailableInputDevices);
960    result.append(buffer);
961    snprintf(buffer, SIZE, " Phone state: %d\n", mPhoneState);
962    result.append(buffer);
963    snprintf(buffer, SIZE, " Ringer mode: %d\n", mRingerMode);
964    result.append(buffer);
965    snprintf(buffer, SIZE, " Force use for communications %d\n", mForceUse[AudioSystem::FOR_COMMUNICATION]);
966    result.append(buffer);
967    snprintf(buffer, SIZE, " Force use for media %d\n", mForceUse[AudioSystem::FOR_MEDIA]);
968    result.append(buffer);
969    snprintf(buffer, SIZE, " Force use for record %d\n", mForceUse[AudioSystem::FOR_RECORD]);
970    result.append(buffer);
971    snprintf(buffer, SIZE, " Force use for dock %d\n", mForceUse[AudioSystem::FOR_DOCK]);
972    result.append(buffer);
973    write(fd, result.string(), result.size());
974
975    snprintf(buffer, SIZE, "\nOutputs dump:\n");
976    write(fd, buffer, strlen(buffer));
977    for (size_t i = 0; i < mOutputs.size(); i++) {
978        snprintf(buffer, SIZE, "- Output %d dump:\n", mOutputs.keyAt(i));
979        write(fd, buffer, strlen(buffer));
980        mOutputs.valueAt(i)->dump(fd);
981    }
982
983    snprintf(buffer, SIZE, "\nInputs dump:\n");
984    write(fd, buffer, strlen(buffer));
985    for (size_t i = 0; i < mInputs.size(); i++) {
986        snprintf(buffer, SIZE, "- Input %d dump:\n", mInputs.keyAt(i));
987        write(fd, buffer, strlen(buffer));
988        mInputs.valueAt(i)->dump(fd);
989    }
990
991    snprintf(buffer, SIZE, "\nStreams dump:\n");
992    write(fd, buffer, strlen(buffer));
993    snprintf(buffer, SIZE, " Stream  Index Min  Index Max  Index Cur  Can be muted\n");
994    write(fd, buffer, strlen(buffer));
995    for (size_t i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
996        snprintf(buffer, SIZE, " %02d", i);
997        mStreams[i].dump(buffer + 3, SIZE);
998        write(fd, buffer, strlen(buffer));
999    }
1000
1001    snprintf(buffer, SIZE, "\nTotal Effects CPU: %f MIPS, Total Effects memory: %d KB\n",
1002            (float)mTotalEffectsCpuLoad/10, mTotalEffectsMemory);
1003    write(fd, buffer, strlen(buffer));
1004
1005    snprintf(buffer, SIZE, "Registered effects:\n");
1006    write(fd, buffer, strlen(buffer));
1007    for (size_t i = 0; i < mEffects.size(); i++) {
1008        snprintf(buffer, SIZE, "- Effect %d dump:\n", mEffects.keyAt(i));
1009        write(fd, buffer, strlen(buffer));
1010        mEffects.valueAt(i)->dump(fd);
1011    }
1012
1013
1014    return NO_ERROR;
1015}
1016
1017// ----------------------------------------------------------------------------
1018// AudioPolicyManagerBase
1019// ----------------------------------------------------------------------------
1020
1021AudioPolicyManagerBase::AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface)
1022    :
1023#ifdef AUDIO_POLICY_TEST
1024    Thread(false),
1025#endif //AUDIO_POLICY_TEST
1026    mPhoneState(AudioSystem::MODE_NORMAL), mRingerMode(0),
1027    mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f),
1028    mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0),
1029    mA2dpSuspended(false)
1030{
1031    mpClientInterface = clientInterface;
1032
1033    for (int i = 0; i < AudioSystem::NUM_FORCE_USE; i++) {
1034        mForceUse[i] = AudioSystem::FORCE_NONE;
1035    }
1036
1037    initializeVolumeCurves();
1038
1039    // devices available by default are speaker, ear piece and microphone
1040    mAvailableOutputDevices = AudioSystem::DEVICE_OUT_EARPIECE |
1041                        AudioSystem::DEVICE_OUT_SPEAKER;
1042    mAvailableInputDevices = AudioSystem::DEVICE_IN_BUILTIN_MIC;
1043
1044#ifdef WITH_A2DP
1045    mA2dpOutput = 0;
1046    mDuplicatedOutput = 0;
1047    mA2dpDeviceAddress = String8("");
1048#endif
1049    mScoDeviceAddress = String8("");
1050
1051    // open hardware output
1052    AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor();
1053    outputDesc->mDevice = (uint32_t)AudioSystem::DEVICE_OUT_SPEAKER;
1054    mHardwareOutput = mpClientInterface->openOutput(&outputDesc->mDevice,
1055                                    &outputDesc->mSamplingRate,
1056                                    &outputDesc->mFormat,
1057                                    &outputDesc->mChannels,
1058                                    &outputDesc->mLatency,
1059                                    outputDesc->mFlags);
1060
1061    if (mHardwareOutput == 0) {
1062        LOGE("Failed to initialize hardware output stream, samplingRate: %d, format %d, channels %d",
1063                outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannels);
1064    } else {
1065        addOutput(mHardwareOutput, outputDesc);
1066        setOutputDevice(mHardwareOutput, (uint32_t)AudioSystem::DEVICE_OUT_SPEAKER, true);
1067        //TODO: configure audio effect output stage here
1068    }
1069
1070    updateDeviceForStrategy();
1071#ifdef AUDIO_POLICY_TEST
1072    if (mHardwareOutput != 0) {
1073        AudioParameter outputCmd = AudioParameter();
1074        outputCmd.addInt(String8("set_id"), 0);
1075        mpClientInterface->setParameters(mHardwareOutput, outputCmd.toString());
1076
1077        mTestDevice = AudioSystem::DEVICE_OUT_SPEAKER;
1078        mTestSamplingRate = 44100;
1079        mTestFormat = AudioSystem::PCM_16_BIT;
1080        mTestChannels =  AudioSystem::CHANNEL_OUT_STEREO;
1081        mTestLatencyMs = 0;
1082        mCurOutput = 0;
1083        mDirectOutput = false;
1084        for (int i = 0; i < NUM_TEST_OUTPUTS; i++) {
1085            mTestOutputs[i] = 0;
1086        }
1087
1088        const size_t SIZE = 256;
1089        char buffer[SIZE];
1090        snprintf(buffer, SIZE, "AudioPolicyManagerTest");
1091        run(buffer, ANDROID_PRIORITY_AUDIO);
1092    }
1093#endif //AUDIO_POLICY_TEST
1094}
1095
1096AudioPolicyManagerBase::~AudioPolicyManagerBase()
1097{
1098#ifdef AUDIO_POLICY_TEST
1099    exit();
1100#endif //AUDIO_POLICY_TEST
1101   for (size_t i = 0; i < mOutputs.size(); i++) {
1102        mpClientInterface->closeOutput(mOutputs.keyAt(i));
1103        delete mOutputs.valueAt(i);
1104   }
1105   mOutputs.clear();
1106   for (size_t i = 0; i < mInputs.size(); i++) {
1107        mpClientInterface->closeInput(mInputs.keyAt(i));
1108        delete mInputs.valueAt(i);
1109   }
1110   mInputs.clear();
1111}
1112
1113status_t AudioPolicyManagerBase::initCheck()
1114{
1115    return (mHardwareOutput == 0) ? NO_INIT : NO_ERROR;
1116}
1117
1118#ifdef AUDIO_POLICY_TEST
1119bool AudioPolicyManagerBase::threadLoop()
1120{
1121    LOGV("entering threadLoop()");
1122    while (!exitPending())
1123    {
1124        String8 command;
1125        int valueInt;
1126        String8 value;
1127
1128        Mutex::Autolock _l(mLock);
1129        mWaitWorkCV.waitRelative(mLock, milliseconds(50));
1130
1131        command = mpClientInterface->getParameters(0, String8("test_cmd_policy"));
1132        AudioParameter param = AudioParameter(command);
1133
1134        if (param.getInt(String8("test_cmd_policy"), valueInt) == NO_ERROR &&
1135            valueInt != 0) {
1136            LOGV("Test command %s received", command.string());
1137            String8 target;
1138            if (param.get(String8("target"), target) != NO_ERROR) {
1139                target = "Manager";
1140            }
1141            if (param.getInt(String8("test_cmd_policy_output"), valueInt) == NO_ERROR) {
1142                param.remove(String8("test_cmd_policy_output"));
1143                mCurOutput = valueInt;
1144            }
1145            if (param.get(String8("test_cmd_policy_direct"), value) == NO_ERROR) {
1146                param.remove(String8("test_cmd_policy_direct"));
1147                if (value == "false") {
1148                    mDirectOutput = false;
1149                } else if (value == "true") {
1150                    mDirectOutput = true;
1151                }
1152            }
1153            if (param.getInt(String8("test_cmd_policy_input"), valueInt) == NO_ERROR) {
1154                param.remove(String8("test_cmd_policy_input"));
1155                mTestInput = valueInt;
1156            }
1157
1158            if (param.get(String8("test_cmd_policy_format"), value) == NO_ERROR) {
1159                param.remove(String8("test_cmd_policy_format"));
1160                int format = AudioSystem::INVALID_FORMAT;
1161                if (value == "PCM 16 bits") {
1162                    format = AudioSystem::PCM_16_BIT;
1163                } else if (value == "PCM 8 bits") {
1164                    format = AudioSystem::PCM_8_BIT;
1165                } else if (value == "Compressed MP3") {
1166                    format = AudioSystem::MP3;
1167                }
1168                if (format != AudioSystem::INVALID_FORMAT) {
1169                    if (target == "Manager") {
1170                        mTestFormat = format;
1171                    } else if (mTestOutputs[mCurOutput] != 0) {
1172                        AudioParameter outputParam = AudioParameter();
1173                        outputParam.addInt(String8("format"), format);
1174                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1175                    }
1176                }
1177            }
1178            if (param.get(String8("test_cmd_policy_channels"), value) == NO_ERROR) {
1179                param.remove(String8("test_cmd_policy_channels"));
1180                int channels = 0;
1181
1182                if (value == "Channels Stereo") {
1183                    channels =  AudioSystem::CHANNEL_OUT_STEREO;
1184                } else if (value == "Channels Mono") {
1185                    channels =  AudioSystem::CHANNEL_OUT_MONO;
1186                }
1187                if (channels != 0) {
1188                    if (target == "Manager") {
1189                        mTestChannels = channels;
1190                    } else if (mTestOutputs[mCurOutput] != 0) {
1191                        AudioParameter outputParam = AudioParameter();
1192                        outputParam.addInt(String8("channels"), channels);
1193                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1194                    }
1195                }
1196            }
1197            if (param.getInt(String8("test_cmd_policy_sampleRate"), valueInt) == NO_ERROR) {
1198                param.remove(String8("test_cmd_policy_sampleRate"));
1199                if (valueInt >= 0 && valueInt <= 96000) {
1200                    int samplingRate = valueInt;
1201                    if (target == "Manager") {
1202                        mTestSamplingRate = samplingRate;
1203                    } else if (mTestOutputs[mCurOutput] != 0) {
1204                        AudioParameter outputParam = AudioParameter();
1205                        outputParam.addInt(String8("sampling_rate"), samplingRate);
1206                        mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
1207                    }
1208                }
1209            }
1210
1211            if (param.get(String8("test_cmd_policy_reopen"), value) == NO_ERROR) {
1212                param.remove(String8("test_cmd_policy_reopen"));
1213
1214                mpClientInterface->closeOutput(mHardwareOutput);
1215                delete mOutputs.valueFor(mHardwareOutput);
1216                mOutputs.removeItem(mHardwareOutput);
1217
1218                AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor();
1219                outputDesc->mDevice = (uint32_t)AudioSystem::DEVICE_OUT_SPEAKER;
1220                mHardwareOutput = mpClientInterface->openOutput(&outputDesc->mDevice,
1221                                                &outputDesc->mSamplingRate,
1222                                                &outputDesc->mFormat,
1223                                                &outputDesc->mChannels,
1224                                                &outputDesc->mLatency,
1225                                                outputDesc->mFlags);
1226                if (mHardwareOutput == 0) {
1227                    LOGE("Failed to reopen hardware output stream, samplingRate: %d, format %d, channels %d",
1228                            outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannels);
1229                } else {
1230                    AudioParameter outputCmd = AudioParameter();
1231                    outputCmd.addInt(String8("set_id"), 0);
1232                    mpClientInterface->setParameters(mHardwareOutput, outputCmd.toString());
1233                    addOutput(mHardwareOutput, outputDesc);
1234                }
1235            }
1236
1237
1238            mpClientInterface->setParameters(0, String8("test_cmd_policy="));
1239        }
1240    }
1241    return false;
1242}
1243
1244void AudioPolicyManagerBase::exit()
1245{
1246    {
1247        AutoMutex _l(mLock);
1248        requestExit();
1249        mWaitWorkCV.signal();
1250    }
1251    requestExitAndWait();
1252}
1253
1254int AudioPolicyManagerBase::testOutputIndex(audio_io_handle_t output)
1255{
1256    for (int i = 0; i < NUM_TEST_OUTPUTS; i++) {
1257        if (output == mTestOutputs[i]) return i;
1258    }
1259    return 0;
1260}
1261#endif //AUDIO_POLICY_TEST
1262
1263// ---
1264
1265void AudioPolicyManagerBase::addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc)
1266{
1267    outputDesc->mId = id;
1268    mOutputs.add(id, outputDesc);
1269}
1270
1271
1272#ifdef WITH_A2DP
1273status_t AudioPolicyManagerBase::handleA2dpConnection(AudioSystem::audio_devices device,
1274                                                 const char *device_address)
1275{
1276    // when an A2DP device is connected, open an A2DP and a duplicated output
1277    LOGV("opening A2DP output for device %s", device_address);
1278    AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor();
1279    outputDesc->mDevice = device;
1280    mA2dpOutput = mpClientInterface->openOutput(&outputDesc->mDevice,
1281                                            &outputDesc->mSamplingRate,
1282                                            &outputDesc->mFormat,
1283                                            &outputDesc->mChannels,
1284                                            &outputDesc->mLatency,
1285                                            outputDesc->mFlags);
1286    if (mA2dpOutput) {
1287        // add A2DP output descriptor
1288        addOutput(mA2dpOutput, outputDesc);
1289
1290        //TODO: configure audio effect output stage here
1291
1292        // set initial stream volume for A2DP device
1293        applyStreamVolumes(mA2dpOutput, device);
1294        if (a2dpUsedForSonification()) {
1295            mDuplicatedOutput = mpClientInterface->openDuplicateOutput(mA2dpOutput, mHardwareOutput);
1296        }
1297        if (mDuplicatedOutput != 0 ||
1298            !a2dpUsedForSonification()) {
1299            // If both A2DP and duplicated outputs are open, send device address to A2DP hardware
1300            // interface
1301            AudioParameter param;
1302            param.add(String8("a2dp_sink_address"), String8(device_address));
1303            mpClientInterface->setParameters(mA2dpOutput, param.toString());
1304            mA2dpDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
1305
1306            if (a2dpUsedForSonification()) {
1307                // add duplicated output descriptor
1308                AudioOutputDescriptor *dupOutputDesc = new AudioOutputDescriptor();
1309                dupOutputDesc->mOutput1 = mOutputs.valueFor(mHardwareOutput);
1310                dupOutputDesc->mOutput2 = mOutputs.valueFor(mA2dpOutput);
1311                dupOutputDesc->mSamplingRate = outputDesc->mSamplingRate;
1312                dupOutputDesc->mFormat = outputDesc->mFormat;
1313                dupOutputDesc->mChannels = outputDesc->mChannels;
1314                dupOutputDesc->mLatency = outputDesc->mLatency;
1315                addOutput(mDuplicatedOutput, dupOutputDesc);
1316                applyStreamVolumes(mDuplicatedOutput, device);
1317            }
1318        } else {
1319            LOGW("getOutput() could not open duplicated output for %d and %d",
1320                    mHardwareOutput, mA2dpOutput);
1321            mpClientInterface->closeOutput(mA2dpOutput);
1322            mOutputs.removeItem(mA2dpOutput);
1323            mA2dpOutput = 0;
1324            delete outputDesc;
1325            return NO_INIT;
1326        }
1327    } else {
1328        LOGW("setDeviceConnectionState() could not open A2DP output for device %x", device);
1329        delete outputDesc;
1330        return NO_INIT;
1331    }
1332    AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mHardwareOutput);
1333
1334    if (!a2dpUsedForSonification()) {
1335        // mute music on A2DP output if a notification or ringtone is playing
1336        uint32_t refCount = hwOutputDesc->strategyRefCount(STRATEGY_SONIFICATION);
1337        for (uint32_t i = 0; i < refCount; i++) {
1338            setStrategyMute(STRATEGY_MEDIA, true, mA2dpOutput);
1339        }
1340    }
1341
1342    mA2dpSuspended = false;
1343
1344    return NO_ERROR;
1345}
1346
1347status_t AudioPolicyManagerBase::handleA2dpDisconnection(AudioSystem::audio_devices device,
1348                                                    const char *device_address)
1349{
1350    if (mA2dpOutput == 0) {
1351        LOGW("setDeviceConnectionState() disconnecting A2DP and no A2DP output!");
1352        return INVALID_OPERATION;
1353    }
1354
1355    if (mA2dpDeviceAddress != device_address) {
1356        LOGW("setDeviceConnectionState() disconnecting unknow A2DP sink address %s", device_address);
1357        return INVALID_OPERATION;
1358    }
1359
1360    // mute media strategy to avoid outputting sound on hardware output while music stream
1361    // is switched from A2DP output and before music is paused by music application
1362    setStrategyMute(STRATEGY_MEDIA, true, mHardwareOutput);
1363    setStrategyMute(STRATEGY_MEDIA, false, mHardwareOutput, MUTE_TIME_MS);
1364
1365    if (!a2dpUsedForSonification()) {
1366        // unmute music on A2DP output if a notification or ringtone is playing
1367        uint32_t refCount = mOutputs.valueFor(mHardwareOutput)->strategyRefCount(STRATEGY_SONIFICATION);
1368        for (uint32_t i = 0; i < refCount; i++) {
1369            setStrategyMute(STRATEGY_MEDIA, false, mA2dpOutput);
1370        }
1371    }
1372    mA2dpDeviceAddress = "";
1373    mA2dpSuspended = false;
1374    return NO_ERROR;
1375}
1376
1377void AudioPolicyManagerBase::closeA2dpOutputs()
1378{
1379
1380    LOGV("setDeviceConnectionState() closing A2DP and duplicated output!");
1381
1382    if (mDuplicatedOutput != 0) {
1383        AudioOutputDescriptor *dupOutputDesc = mOutputs.valueFor(mDuplicatedOutput);
1384        AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mHardwareOutput);
1385        // As all active tracks on duplicated output will be deleted,
1386        // and as they were also referenced on hardware output, the reference
1387        // count for their stream type must be adjusted accordingly on
1388        // hardware output.
1389        for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
1390            int refCount = dupOutputDesc->mRefCount[i];
1391            hwOutputDesc->changeRefCount((AudioSystem::stream_type)i,-refCount);
1392        }
1393
1394        mpClientInterface->closeOutput(mDuplicatedOutput);
1395        delete mOutputs.valueFor(mDuplicatedOutput);
1396        mOutputs.removeItem(mDuplicatedOutput);
1397        mDuplicatedOutput = 0;
1398    }
1399    if (mA2dpOutput != 0) {
1400        AudioParameter param;
1401        param.add(String8("closing"), String8("true"));
1402        mpClientInterface->setParameters(mA2dpOutput, param.toString());
1403
1404        mpClientInterface->closeOutput(mA2dpOutput);
1405        delete mOutputs.valueFor(mA2dpOutput);
1406        mOutputs.removeItem(mA2dpOutput);
1407        mA2dpOutput = 0;
1408    }
1409}
1410
1411void AudioPolicyManagerBase::checkOutputForStrategy(routing_strategy strategy)
1412{
1413    uint32_t prevDevice = getDeviceForStrategy(strategy);
1414    uint32_t curDevice = getDeviceForStrategy(strategy, false);
1415    bool a2dpWasUsed = AudioSystem::isA2dpDevice((AudioSystem::audio_devices)(prevDevice & ~AudioSystem::DEVICE_OUT_SPEAKER));
1416    bool a2dpIsUsed = AudioSystem::isA2dpDevice((AudioSystem::audio_devices)(curDevice & ~AudioSystem::DEVICE_OUT_SPEAKER));
1417    audio_io_handle_t srcOutput = 0;
1418    audio_io_handle_t dstOutput = 0;
1419
1420    if (a2dpWasUsed && !a2dpIsUsed) {
1421        bool dupUsed = a2dpUsedForSonification() && a2dpWasUsed && (AudioSystem::popCount(prevDevice) == 2);
1422        dstOutput = mHardwareOutput;
1423        if (dupUsed) {
1424            LOGV("checkOutputForStrategy() moving strategy %d from duplicated", strategy);
1425            srcOutput = mDuplicatedOutput;
1426        } else {
1427            LOGV("checkOutputForStrategy() moving strategy %d from a2dp", strategy);
1428            srcOutput = mA2dpOutput;
1429        }
1430    }
1431    if (a2dpIsUsed && !a2dpWasUsed) {
1432        bool dupUsed = a2dpUsedForSonification() && a2dpIsUsed && (AudioSystem::popCount(curDevice) == 2);
1433        srcOutput = mHardwareOutput;
1434        if (dupUsed) {
1435            LOGV("checkOutputForStrategy() moving strategy %d to duplicated", strategy);
1436            dstOutput = mDuplicatedOutput;
1437        } else {
1438            LOGV("checkOutputForStrategy() moving strategy %d to a2dp", strategy);
1439            dstOutput = mA2dpOutput;
1440        }
1441    }
1442
1443    if (srcOutput != 0 && dstOutput != 0) {
1444        // Move effects associated to this strategy from previous output to new output
1445        for (size_t i = 0; i < mEffects.size(); i++) {
1446            EffectDescriptor *desc = mEffects.valueAt(i);
1447            if (desc->mSession != AudioSystem::SESSION_OUTPUT_STAGE &&
1448                    desc->mStrategy == strategy &&
1449                    desc->mIo == srcOutput) {
1450                LOGV("checkOutputForStrategy() moving effect %d to output %d", mEffects.keyAt(i), dstOutput);
1451                mpClientInterface->moveEffects(desc->mSession, srcOutput, dstOutput);
1452                desc->mIo = dstOutput;
1453            }
1454        }
1455        // Move tracks associated to this strategy from previous output to new output
1456        for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
1457            if (getStrategy((AudioSystem::stream_type)i) == strategy) {
1458                mpClientInterface->setStreamOutput((AudioSystem::stream_type)i, dstOutput);
1459            }
1460        }
1461    }
1462}
1463
1464void AudioPolicyManagerBase::checkOutputForAllStrategies()
1465{
1466    checkOutputForStrategy(STRATEGY_PHONE);
1467    checkOutputForStrategy(STRATEGY_SONIFICATION);
1468    checkOutputForStrategy(STRATEGY_MEDIA);
1469    checkOutputForStrategy(STRATEGY_DTMF);
1470}
1471
1472void AudioPolicyManagerBase::checkA2dpSuspend()
1473{
1474    // suspend A2DP output if:
1475    //      (NOT already suspended) &&
1476    //      ((SCO device is connected &&
1477    //       (forced usage for communication || for record is SCO))) ||
1478    //      (phone state is ringing || in call)
1479    //
1480    // restore A2DP output if:
1481    //      (Already suspended) &&
1482    //      ((SCO device is NOT connected ||
1483    //       (forced usage NOT for communication && NOT for record is SCO))) &&
1484    //      (phone state is NOT ringing && NOT in call)
1485    //
1486    if (mA2dpOutput == 0) {
1487        return;
1488    }
1489
1490    if (mA2dpSuspended) {
1491        if (((mScoDeviceAddress == "") ||
1492             ((mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO) &&
1493              (mForceUse[AudioSystem::FOR_RECORD] != AudioSystem::FORCE_BT_SCO))) &&
1494             ((mPhoneState != AudioSystem::MODE_IN_CALL) &&
1495              (mPhoneState != AudioSystem::MODE_RINGTONE))) {
1496
1497            mpClientInterface->restoreOutput(mA2dpOutput);
1498            mA2dpSuspended = false;
1499        }
1500    } else {
1501        if (((mScoDeviceAddress != "") &&
1502             ((mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) ||
1503              (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO))) ||
1504             ((mPhoneState == AudioSystem::MODE_IN_CALL) ||
1505              (mPhoneState == AudioSystem::MODE_RINGTONE))) {
1506
1507            mpClientInterface->suspendOutput(mA2dpOutput);
1508            mA2dpSuspended = true;
1509        }
1510    }
1511}
1512
1513
1514#endif
1515
1516uint32_t AudioPolicyManagerBase::getNewDevice(audio_io_handle_t output, bool fromCache)
1517{
1518    uint32_t device = 0;
1519
1520    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
1521    // check the following by order of priority to request a routing change if necessary:
1522    // 1: we are in call or the strategy phone is active on the hardware output:
1523    //      use device for strategy phone
1524    // 2: the strategy sonification is active on the hardware output:
1525    //      use device for strategy sonification
1526    // 3: the strategy media is active on the hardware output:
1527    //      use device for strategy media
1528    // 4: the strategy DTMF is active on the hardware output:
1529    //      use device for strategy DTMF
1530    if (isInCall() ||
1531        outputDesc->isUsedByStrategy(STRATEGY_PHONE)) {
1532        device = getDeviceForStrategy(STRATEGY_PHONE, fromCache);
1533    } else if (outputDesc->isUsedByStrategy(STRATEGY_SONIFICATION)) {
1534        device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache);
1535    } else if (outputDesc->isUsedByStrategy(STRATEGY_MEDIA)) {
1536        device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache);
1537    } else if (outputDesc->isUsedByStrategy(STRATEGY_DTMF)) {
1538        device = getDeviceForStrategy(STRATEGY_DTMF, fromCache);
1539    }
1540
1541    LOGV("getNewDevice() selected device %x", device);
1542    return device;
1543}
1544
1545uint32_t AudioPolicyManagerBase::getStrategyForStream(AudioSystem::stream_type stream) {
1546    return (uint32_t)getStrategy(stream);
1547}
1548
1549uint32_t AudioPolicyManagerBase::getDevicesForStream(AudioSystem::stream_type stream) {
1550    uint32_t devices;
1551    // By checking the range of stream before calling getStrategy, we avoid
1552    // getStrategy's behavior for invalid streams.  getStrategy would do a LOGE
1553    // and then return STRATEGY_MEDIA, but we want to return the empty set.
1554    if (stream < (AudioSystem::stream_type) 0 || stream >= AudioSystem::NUM_STREAM_TYPES) {
1555        devices = 0;
1556    } else {
1557        AudioPolicyManagerBase::routing_strategy strategy = getStrategy(stream);
1558        devices = getDeviceForStrategy(strategy, true);
1559    }
1560    return devices;
1561}
1562
1563AudioPolicyManagerBase::routing_strategy AudioPolicyManagerBase::getStrategy(
1564        AudioSystem::stream_type stream) {
1565    // stream to strategy mapping
1566    switch (stream) {
1567    case AudioSystem::VOICE_CALL:
1568    case AudioSystem::BLUETOOTH_SCO:
1569        return STRATEGY_PHONE;
1570    case AudioSystem::RING:
1571    case AudioSystem::NOTIFICATION:
1572    case AudioSystem::ALARM:
1573    case AudioSystem::ENFORCED_AUDIBLE:
1574        return STRATEGY_SONIFICATION;
1575    case AudioSystem::DTMF:
1576        return STRATEGY_DTMF;
1577    default:
1578        LOGE("unknown stream type");
1579    case AudioSystem::SYSTEM:
1580        // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs
1581        // while key clicks are played produces a poor result
1582    case AudioSystem::TTS:
1583    case AudioSystem::MUSIC:
1584        return STRATEGY_MEDIA;
1585    }
1586}
1587
1588uint32_t AudioPolicyManagerBase::getDeviceForStrategy(routing_strategy strategy, bool fromCache)
1589{
1590    uint32_t device = 0;
1591
1592    if (fromCache) {
1593        LOGV("getDeviceForStrategy() from cache strategy %d, device %x", strategy, mDeviceForStrategy[strategy]);
1594        return mDeviceForStrategy[strategy];
1595    }
1596
1597    switch (strategy) {
1598    case STRATEGY_DTMF:
1599        if (!isInCall()) {
1600            // when off call, DTMF strategy follows the same rules as MEDIA strategy
1601            device = getDeviceForStrategy(STRATEGY_MEDIA, false);
1602            break;
1603        }
1604        // when in call, DTMF and PHONE strategies follow the same rules
1605        // FALL THROUGH
1606
1607    case STRATEGY_PHONE:
1608        // for phone strategy, we first consider the forced use and then the available devices by order
1609        // of priority
1610        switch (mForceUse[AudioSystem::FOR_COMMUNICATION]) {
1611        case AudioSystem::FORCE_BT_SCO:
1612            if (!isInCall() || strategy != STRATEGY_DTMF) {
1613                device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
1614                if (device) break;
1615            }
1616            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
1617            if (device) break;
1618            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO;
1619            if (device) break;
1620            // if SCO device is requested but no SCO device is available, fall back to default case
1621            // FALL THROUGH
1622
1623        default:    // FORCE_NONE
1624            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADPHONE;
1625            if (device) break;
1626            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADSET;
1627            if (device) break;
1628#ifdef WITH_A2DP
1629            // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP
1630            if (!isInCall() && !mA2dpSuspended) {
1631                device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP;
1632                if (device) break;
1633                device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
1634                if (device) break;
1635            }
1636#endif
1637            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL;
1638            if (device) break;
1639            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET;
1640            if (device) break;
1641            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET;
1642            if (device) break;
1643            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_EARPIECE;
1644            if (device == 0) {
1645                LOGE("getDeviceForStrategy() earpiece device not found");
1646            }
1647            break;
1648
1649        case AudioSystem::FORCE_SPEAKER:
1650#ifdef WITH_A2DP
1651            // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to
1652            // A2DP speaker when forcing to speaker output
1653            if (!isInCall() && !mA2dpSuspended) {
1654                device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
1655                if (device) break;
1656            }
1657#endif
1658            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL;
1659            if (device) break;
1660            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET;
1661            if (device) break;
1662            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET;
1663            if (device) break;
1664            device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER;
1665            if (device == 0) {
1666                LOGE("getDeviceForStrategy() speaker device not found");
1667            }
1668            break;
1669        }
1670    break;
1671
1672    case STRATEGY_SONIFICATION:
1673
1674        // If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by
1675        // handleIncallSonification().
1676        if (isInCall()) {
1677            device = getDeviceForStrategy(STRATEGY_PHONE, false);
1678            break;
1679        }
1680        device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER;
1681        if (device == 0) {
1682            LOGE("getDeviceForStrategy() speaker device not found");
1683        }
1684        // The second device used for sonification is the same as the device used by media strategy
1685        // FALL THROUGH
1686
1687    case STRATEGY_MEDIA: {
1688        uint32_t device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADPHONE;
1689        if (device2 == 0) {
1690            device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADSET;
1691        }
1692#ifdef WITH_A2DP
1693        if ((mA2dpOutput != 0) && !mA2dpSuspended &&
1694                (strategy != STRATEGY_SONIFICATION || a2dpUsedForSonification())) {
1695            if (device2 == 0) {
1696                device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP;
1697            }
1698            if (device2 == 0) {
1699                device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
1700            }
1701            if (device2 == 0) {
1702                device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
1703            }
1704        }
1705#endif
1706        if (device2 == 0) {
1707            device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL;
1708        }
1709        if (device2 == 0) {
1710            device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET;
1711        }
1712        if (device2 == 0) {
1713            device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET;
1714        }
1715        if (device2 == 0) {
1716            device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER;
1717        }
1718
1719        // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION, 0 otherwise
1720        device |= device2;
1721        if (device == 0) {
1722            LOGE("getDeviceForStrategy() speaker device not found");
1723        }
1724        } break;
1725
1726    default:
1727        LOGW("getDeviceForStrategy() unknown strategy: %d", strategy);
1728        break;
1729    }
1730
1731    LOGV("getDeviceForStrategy() strategy %d, device %x", strategy, device);
1732    return device;
1733}
1734
1735void AudioPolicyManagerBase::updateDeviceForStrategy()
1736{
1737    for (int i = 0; i < NUM_STRATEGIES; i++) {
1738        mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false);
1739    }
1740}
1741
1742void AudioPolicyManagerBase::setOutputDevice(audio_io_handle_t output, uint32_t device, bool force, int delayMs)
1743{
1744    LOGV("setOutputDevice() output %d device %x delayMs %d", output, device, delayMs);
1745    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
1746
1747
1748    if (outputDesc->isDuplicated()) {
1749        setOutputDevice(outputDesc->mOutput1->mId, device, force, delayMs);
1750        setOutputDevice(outputDesc->mOutput2->mId, device, force, delayMs);
1751        return;
1752    }
1753#ifdef WITH_A2DP
1754    // filter devices according to output selected
1755    if (output == mA2dpOutput) {
1756        device &= AudioSystem::DEVICE_OUT_ALL_A2DP;
1757    } else {
1758        device &= ~AudioSystem::DEVICE_OUT_ALL_A2DP;
1759    }
1760#endif
1761
1762    uint32_t prevDevice = (uint32_t)outputDesc->device();
1763    // Do not change the routing if:
1764    //  - the requestede device is 0
1765    //  - the requested device is the same as current device and force is not specified.
1766    // Doing this check here allows the caller to call setOutputDevice() without conditions
1767    if ((device == 0 || device == prevDevice) && !force) {
1768        LOGV("setOutputDevice() setting same device %x or null device for output %d", device, output);
1769        return;
1770    }
1771
1772    outputDesc->mDevice = device;
1773    // mute media streams if both speaker and headset are selected
1774    if (output == mHardwareOutput && AudioSystem::popCount(device) == 2) {
1775        setStrategyMute(STRATEGY_MEDIA, true, output);
1776        // wait for the PCM output buffers to empty before proceeding with the rest of the command
1777        usleep(outputDesc->mLatency*2*1000);
1778    }
1779
1780    // do the routing
1781    AudioParameter param = AudioParameter();
1782    param.addInt(String8(AudioParameter::keyRouting), (int)device);
1783    mpClientInterface->setParameters(mHardwareOutput, param.toString(), delayMs);
1784    // update stream volumes according to new device
1785    applyStreamVolumes(output, device, delayMs);
1786
1787    // if changing from a combined headset + speaker route, unmute media streams
1788    if (output == mHardwareOutput && AudioSystem::popCount(prevDevice) == 2) {
1789        setStrategyMute(STRATEGY_MEDIA, false, output, delayMs);
1790    }
1791}
1792
1793uint32_t AudioPolicyManagerBase::getDeviceForInputSource(int inputSource)
1794{
1795    uint32_t device;
1796
1797    switch(inputSource) {
1798    case AUDIO_SOURCE_DEFAULT:
1799    case AUDIO_SOURCE_MIC:
1800    case AUDIO_SOURCE_VOICE_RECOGNITION:
1801    case AUDIO_SOURCE_VOICE_COMMUNICATION:
1802        if (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO &&
1803            mAvailableInputDevices & AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
1804            device = AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET;
1805        } else if (mAvailableInputDevices & AudioSystem::DEVICE_IN_WIRED_HEADSET) {
1806            device = AudioSystem::DEVICE_IN_WIRED_HEADSET;
1807        } else {
1808            device = AudioSystem::DEVICE_IN_BUILTIN_MIC;
1809        }
1810        break;
1811    case AUDIO_SOURCE_CAMCORDER:
1812        if (hasBackMicrophone()) {
1813            device = AudioSystem::DEVICE_IN_BACK_MIC;
1814        } else {
1815            device = AudioSystem::DEVICE_IN_BUILTIN_MIC;
1816        }
1817        break;
1818    case AUDIO_SOURCE_VOICE_UPLINK:
1819    case AUDIO_SOURCE_VOICE_DOWNLINK:
1820    case AUDIO_SOURCE_VOICE_CALL:
1821        device = AudioSystem::DEVICE_IN_VOICE_CALL;
1822        break;
1823    default:
1824        LOGW("getDeviceForInputSource() invalid input source %d", inputSource);
1825        device = 0;
1826        break;
1827    }
1828    LOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device);
1829    return device;
1830}
1831
1832audio_io_handle_t AudioPolicyManagerBase::getActiveInput()
1833{
1834    for (size_t i = 0; i < mInputs.size(); i++) {
1835        if (mInputs.valueAt(i)->mRefCount > 0) {
1836            return mInputs.keyAt(i);
1837        }
1838    }
1839    return 0;
1840}
1841
1842float AudioPolicyManagerBase::volIndexToAmpl(uint32_t device, const StreamDescriptor& streamDesc,
1843        int indexInUi) {
1844    // the volume index in the UI is relative to the min and max volume indices for this stream type
1845    int nbSteps = 1 + streamDesc.mVolIndex[StreamDescriptor::VOLMAX] -
1846            streamDesc.mVolIndex[StreamDescriptor::VOLMIN];
1847    int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) /
1848            (streamDesc.mIndexMax - streamDesc.mIndexMin);
1849
1850    // find what part of the curve this index volume belongs to, or if it's out of bounds
1851    int segment = 0;
1852    if (volIdx < streamDesc.mVolIndex[StreamDescriptor::VOLMIN]) {         // out of bounds
1853        return 0.0f;
1854    } else if (volIdx < streamDesc.mVolIndex[StreamDescriptor::VOLKNEE1]) {
1855        segment = 0;
1856    } else if (volIdx < streamDesc.mVolIndex[StreamDescriptor::VOLKNEE2]) {
1857        segment = 1;
1858    } else if (volIdx <= streamDesc.mVolIndex[StreamDescriptor::VOLMAX]) {
1859        segment = 2;
1860    } else {                                                               // out of bounds
1861        return 1.0f;
1862    }
1863
1864    // linear interpolation in the attenuation table in dB
1865    float decibels = streamDesc.mVolDbAtt[segment] +
1866            ((float)(volIdx - streamDesc.mVolIndex[segment])) *
1867                ( (streamDesc.mVolDbAtt[segment+1] - streamDesc.mVolDbAtt[segment]) /
1868                    ((float)(streamDesc.mVolIndex[segment+1] - streamDesc.mVolIndex[segment])) );
1869
1870    float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 )
1871
1872    LOGV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f",
1873            streamDesc.mVolIndex[segment], volIdx, streamDesc.mVolIndex[segment+1],
1874            streamDesc.mVolDbAtt[segment], decibels, streamDesc.mVolDbAtt[segment+1],
1875            amplification);
1876
1877    return amplification;
1878}
1879
1880void AudioPolicyManagerBase::initializeVolumeCurves() {
1881    // initialize the volume curves to a (-49.5 - 0 dB) attenuation in 0.5dB steps
1882    for (int i=0 ; i< AudioSystem::NUM_STREAM_TYPES ; i++) {
1883        mStreams[i].mVolIndex[StreamDescriptor::VOLMIN] = 1;
1884        mStreams[i].mVolDbAtt[StreamDescriptor::VOLMIN] = -49.5f;
1885        mStreams[i].mVolIndex[StreamDescriptor::VOLKNEE1] = 33;
1886        mStreams[i].mVolDbAtt[StreamDescriptor::VOLKNEE1] = -33.5f;
1887        mStreams[i].mVolIndex[StreamDescriptor::VOLKNEE2] = 66;
1888        mStreams[i].mVolDbAtt[StreamDescriptor::VOLKNEE2] = -17.0f;
1889        // here we use 100 steps to avoid rounding errors
1890        // when computing the volume in volIndexToAmpl()
1891        mStreams[i].mVolIndex[StreamDescriptor::VOLMAX] = 100;
1892        mStreams[i].mVolDbAtt[StreamDescriptor::VOLMAX] = 0.0f;
1893    }
1894
1895    // Modification for music: more attenuation for lower volumes, finer steps at high volumes
1896    mStreams[AudioSystem::MUSIC].mVolIndex[StreamDescriptor::VOLMIN] = 1;
1897    mStreams[AudioSystem::MUSIC].mVolDbAtt[StreamDescriptor::VOLMIN] = -58.0f;
1898    mStreams[AudioSystem::MUSIC].mVolIndex[StreamDescriptor::VOLKNEE1] = 20;
1899    mStreams[AudioSystem::MUSIC].mVolDbAtt[StreamDescriptor::VOLKNEE1] = -40.0f;
1900    mStreams[AudioSystem::MUSIC].mVolIndex[StreamDescriptor::VOLKNEE2] = 60;
1901    mStreams[AudioSystem::MUSIC].mVolDbAtt[StreamDescriptor::VOLKNEE2] = -17.0f;
1902    mStreams[AudioSystem::MUSIC].mVolIndex[StreamDescriptor::VOLMAX] = 100;
1903    mStreams[AudioSystem::MUSIC].mVolDbAtt[StreamDescriptor::VOLMAX] = 0.0f;
1904}
1905
1906float AudioPolicyManagerBase::computeVolume(int stream, int index, audio_io_handle_t output, uint32_t device)
1907{
1908    float volume = 1.0;
1909    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
1910    StreamDescriptor &streamDesc = mStreams[stream];
1911
1912    if (device == 0) {
1913        device = outputDesc->device();
1914    }
1915
1916    // if volume is not 0 (not muted), force media volume to max on digital output
1917    if (stream == AudioSystem::MUSIC &&
1918        index != mStreams[stream].mIndexMin &&
1919        device == AudioSystem::DEVICE_OUT_AUX_DIGITAL) {
1920        return 1.0;
1921    }
1922
1923    volume = volIndexToAmpl(device, streamDesc, index);
1924
1925    // if a headset is connected, apply the following rules to ring tones and notifications
1926    // to avoid sound level bursts in user's ears:
1927    // - always attenuate ring tones and notifications volume by 6dB
1928    // - if music is playing, always limit the volume to current music volume,
1929    // with a minimum threshold at -36dB so that notification is always perceived.
1930    if ((device &
1931        (AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP |
1932        AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
1933        AudioSystem::DEVICE_OUT_WIRED_HEADSET |
1934        AudioSystem::DEVICE_OUT_WIRED_HEADPHONE)) &&
1935        ((getStrategy((AudioSystem::stream_type)stream) == STRATEGY_SONIFICATION) ||
1936         (stream == AudioSystem::SYSTEM)) &&
1937        streamDesc.mCanBeMuted) {
1938        volume *= SONIFICATION_HEADSET_VOLUME_FACTOR;
1939        // when the phone is ringing we must consider that music could have been paused just before
1940        // by the music application and behave as if music was active if the last music track was
1941        // just stopped
1942        if (outputDesc->mRefCount[AudioSystem::MUSIC] || mLimitRingtoneVolume) {
1943            float musicVol = computeVolume(AudioSystem::MUSIC, mStreams[AudioSystem::MUSIC].mIndexCur, output, device);
1944            float minVol = (musicVol > SONIFICATION_HEADSET_VOLUME_MIN) ? musicVol : SONIFICATION_HEADSET_VOLUME_MIN;
1945            if (volume > minVol) {
1946                volume = minVol;
1947                LOGV("computeVolume limiting volume to %f musicVol %f", minVol, musicVol);
1948            }
1949        }
1950    }
1951
1952    return volume;
1953}
1954
1955status_t AudioPolicyManagerBase::checkAndSetVolume(int stream, int index, audio_io_handle_t output, uint32_t device, int delayMs, bool force)
1956{
1957
1958    // do not change actual stream volume if the stream is muted
1959    if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) {
1960        LOGV("checkAndSetVolume() stream %d muted count %d", stream, mOutputs.valueFor(output)->mMuteCount[stream]);
1961        return NO_ERROR;
1962    }
1963
1964    // do not change in call volume if bluetooth is connected and vice versa
1965    if ((stream == AudioSystem::VOICE_CALL && mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) ||
1966        (stream == AudioSystem::BLUETOOTH_SCO && mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO)) {
1967        LOGV("checkAndSetVolume() cannot set stream %d volume with force use = %d for comm",
1968             stream, mForceUse[AudioSystem::FOR_COMMUNICATION]);
1969        return INVALID_OPERATION;
1970    }
1971
1972    float volume = computeVolume(stream, index, output, device);
1973    // We actually change the volume if:
1974    // - the float value returned by computeVolume() changed
1975    // - the force flag is set
1976    if (volume != mOutputs.valueFor(output)->mCurVolume[stream] ||
1977            force) {
1978        mOutputs.valueFor(output)->mCurVolume[stream] = volume;
1979        LOGV("setStreamVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs);
1980        if (stream == AudioSystem::VOICE_CALL ||
1981            stream == AudioSystem::DTMF ||
1982            stream == AudioSystem::BLUETOOTH_SCO) {
1983            // offset value to reflect actual hardware volume that never reaches 0
1984            // 1% corresponds roughly to first step in VOICE_CALL stream volume setting (see AudioService.java)
1985            volume = 0.01 + 0.99 * volume;
1986            // Force VOICE_CALL to track BLUETOOTH_SCO stream volume when bluetooth audio is
1987            // enabled
1988            if (stream == AudioSystem::BLUETOOTH_SCO) {
1989                mpClientInterface->setStreamVolume(AudioSystem::VOICE_CALL, volume, output, delayMs);
1990            }
1991        }
1992
1993        mpClientInterface->setStreamVolume((AudioSystem::stream_type)stream, volume, output, delayMs);
1994    }
1995
1996    if (stream == AudioSystem::VOICE_CALL ||
1997        stream == AudioSystem::BLUETOOTH_SCO) {
1998        float voiceVolume;
1999        // Force voice volume to max for bluetooth SCO as volume is managed by the headset
2000        if (stream == AudioSystem::VOICE_CALL) {
2001            voiceVolume = (float)index/(float)mStreams[stream].mIndexMax;
2002        } else {
2003            voiceVolume = 1.0;
2004        }
2005
2006        if (voiceVolume != mLastVoiceVolume && output == mHardwareOutput) {
2007            mpClientInterface->setVoiceVolume(voiceVolume, delayMs);
2008            mLastVoiceVolume = voiceVolume;
2009        }
2010    }
2011
2012    return NO_ERROR;
2013}
2014
2015void AudioPolicyManagerBase::applyStreamVolumes(audio_io_handle_t output, uint32_t device, int delayMs, bool force)
2016{
2017    LOGV("applyStreamVolumes() for output %d and device %x", output, device);
2018
2019    for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
2020        checkAndSetVolume(stream, mStreams[stream].mIndexCur, output, device, delayMs, force);
2021    }
2022}
2023
2024void AudioPolicyManagerBase::setStrategyMute(routing_strategy strategy, bool on, audio_io_handle_t output, int delayMs)
2025{
2026    LOGV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output);
2027    for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
2028        if (getStrategy((AudioSystem::stream_type)stream) == strategy) {
2029            setStreamMute(stream, on, output, delayMs);
2030        }
2031    }
2032}
2033
2034void AudioPolicyManagerBase::setStreamMute(int stream, bool on, audio_io_handle_t output, int delayMs)
2035{
2036    StreamDescriptor &streamDesc = mStreams[stream];
2037    AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2038
2039    LOGV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d", stream, on, output, outputDesc->mMuteCount[stream]);
2040
2041    if (on) {
2042        if (outputDesc->mMuteCount[stream] == 0) {
2043            if (streamDesc.mCanBeMuted) {
2044                checkAndSetVolume(stream, 0, output, outputDesc->device(), delayMs);
2045            }
2046        }
2047        // increment mMuteCount after calling checkAndSetVolume() so that volume change is not ignored
2048        outputDesc->mMuteCount[stream]++;
2049    } else {
2050        if (outputDesc->mMuteCount[stream] == 0) {
2051            LOGW("setStreamMute() unmuting non muted stream!");
2052            return;
2053        }
2054        if (--outputDesc->mMuteCount[stream] == 0) {
2055            checkAndSetVolume(stream, streamDesc.mIndexCur, output, outputDesc->device(), delayMs);
2056        }
2057    }
2058}
2059
2060void AudioPolicyManagerBase::handleIncallSonification(int stream, bool starting, bool stateChange)
2061{
2062    // if the stream pertains to sonification strategy and we are in call we must
2063    // mute the stream if it is low visibility. If it is high visibility, we must play a tone
2064    // in the device used for phone strategy and play the tone if the selected device does not
2065    // interfere with the device used for phone strategy
2066    // if stateChange is true, we are called from setPhoneState() and we must mute or unmute as
2067    // many times as there are active tracks on the output
2068
2069    if (getStrategy((AudioSystem::stream_type)stream) == STRATEGY_SONIFICATION) {
2070        AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mHardwareOutput);
2071        LOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d",
2072                stream, starting, outputDesc->mDevice, stateChange);
2073        if (outputDesc->mRefCount[stream]) {
2074            int muteCount = 1;
2075            if (stateChange) {
2076                muteCount = outputDesc->mRefCount[stream];
2077            }
2078            if (AudioSystem::isLowVisibility((AudioSystem::stream_type)stream)) {
2079                LOGV("handleIncallSonification() low visibility, muteCount %d", muteCount);
2080                for (int i = 0; i < muteCount; i++) {
2081                    setStreamMute(stream, starting, mHardwareOutput);
2082                }
2083            } else {
2084                LOGV("handleIncallSonification() high visibility");
2085                if (outputDesc->device() & getDeviceForStrategy(STRATEGY_PHONE)) {
2086                    LOGV("handleIncallSonification() high visibility muted, muteCount %d", muteCount);
2087                    for (int i = 0; i < muteCount; i++) {
2088                        setStreamMute(stream, starting, mHardwareOutput);
2089                    }
2090                }
2091                if (starting) {
2092                    mpClientInterface->startTone(ToneGenerator::TONE_SUP_CALL_WAITING, AudioSystem::VOICE_CALL);
2093                } else {
2094                    mpClientInterface->stopTone();
2095                }
2096            }
2097        }
2098    }
2099}
2100
2101bool AudioPolicyManagerBase::isInCall()
2102{
2103    return isStateInCall(mPhoneState);
2104}
2105
2106bool AudioPolicyManagerBase::isStateInCall(int state) {
2107    return ((state == AudioSystem::MODE_IN_CALL) ||
2108            (state == AudioSystem::MODE_IN_COMMUNICATION));
2109}
2110
2111bool AudioPolicyManagerBase::needsDirectOuput(AudioSystem::stream_type stream,
2112                                    uint32_t samplingRate,
2113                                    uint32_t format,
2114                                    uint32_t channels,
2115                                    AudioSystem::output_flags flags,
2116                                    uint32_t device)
2117{
2118   return ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) ||
2119          (format !=0 && !AudioSystem::isLinearPCM(format)));
2120}
2121
2122uint32_t AudioPolicyManagerBase::getMaxEffectsCpuLoad()
2123{
2124    return MAX_EFFECTS_CPU_LOAD;
2125}
2126
2127uint32_t AudioPolicyManagerBase::getMaxEffectsMemory()
2128{
2129    return MAX_EFFECTS_MEMORY;
2130}
2131
2132// --- AudioOutputDescriptor class implementation
2133
2134AudioPolicyManagerBase::AudioOutputDescriptor::AudioOutputDescriptor()
2135    : mId(0), mSamplingRate(0), mFormat(0), mChannels(0), mLatency(0),
2136    mFlags((AudioSystem::output_flags)0), mDevice(0), mOutput1(0), mOutput2(0)
2137{
2138    // clear usage count for all stream types
2139    for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
2140        mRefCount[i] = 0;
2141        mCurVolume[i] = -1.0;
2142        mMuteCount[i] = 0;
2143        mStopTime[i] = 0;
2144    }
2145}
2146
2147uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::device()
2148{
2149    uint32_t device = 0;
2150    if (isDuplicated()) {
2151        device = mOutput1->mDevice | mOutput2->mDevice;
2152    } else {
2153        device = mDevice;
2154    }
2155    return device;
2156}
2157
2158void AudioPolicyManagerBase::AudioOutputDescriptor::changeRefCount(AudioSystem::stream_type stream, int delta)
2159{
2160    // forward usage count change to attached outputs
2161    if (isDuplicated()) {
2162        mOutput1->changeRefCount(stream, delta);
2163        mOutput2->changeRefCount(stream, delta);
2164    }
2165    if ((delta + (int)mRefCount[stream]) < 0) {
2166        LOGW("changeRefCount() invalid delta %d for stream %d, refCount %d", delta, stream, mRefCount[stream]);
2167        mRefCount[stream] = 0;
2168        return;
2169    }
2170    mRefCount[stream] += delta;
2171    LOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]);
2172}
2173
2174uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::refCount()
2175{
2176    uint32_t refcount = 0;
2177    for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
2178        refcount += mRefCount[i];
2179    }
2180    return refcount;
2181}
2182
2183uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::strategyRefCount(routing_strategy strategy)
2184{
2185    uint32_t refCount = 0;
2186    for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
2187        if (getStrategy((AudioSystem::stream_type)i) == strategy) {
2188            refCount += mRefCount[i];
2189        }
2190    }
2191    return refCount;
2192}
2193
2194status_t AudioPolicyManagerBase::AudioOutputDescriptor::dump(int fd)
2195{
2196    const size_t SIZE = 256;
2197    char buffer[SIZE];
2198    String8 result;
2199
2200    snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
2201    result.append(buffer);
2202    snprintf(buffer, SIZE, " Format: %d\n", mFormat);
2203    result.append(buffer);
2204    snprintf(buffer, SIZE, " Channels: %08x\n", mChannels);
2205    result.append(buffer);
2206    snprintf(buffer, SIZE, " Latency: %d\n", mLatency);
2207    result.append(buffer);
2208    snprintf(buffer, SIZE, " Flags %08x\n", mFlags);
2209    result.append(buffer);
2210    snprintf(buffer, SIZE, " Devices %08x\n", device());
2211    result.append(buffer);
2212    snprintf(buffer, SIZE, " Stream volume refCount muteCount\n");
2213    result.append(buffer);
2214    for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
2215        snprintf(buffer, SIZE, " %02d     %.03f     %02d       %02d\n", i, mCurVolume[i], mRefCount[i], mMuteCount[i]);
2216        result.append(buffer);
2217    }
2218    write(fd, result.string(), result.size());
2219
2220    return NO_ERROR;
2221}
2222
2223// --- AudioInputDescriptor class implementation
2224
2225AudioPolicyManagerBase::AudioInputDescriptor::AudioInputDescriptor()
2226    : mSamplingRate(0), mFormat(0), mChannels(0),
2227      mAcoustics((AudioSystem::audio_in_acoustics)0), mDevice(0), mRefCount(0),
2228      mInputSource(0)
2229{
2230}
2231
2232status_t AudioPolicyManagerBase::AudioInputDescriptor::dump(int fd)
2233{
2234    const size_t SIZE = 256;
2235    char buffer[SIZE];
2236    String8 result;
2237
2238    snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
2239    result.append(buffer);
2240    snprintf(buffer, SIZE, " Format: %d\n", mFormat);
2241    result.append(buffer);
2242    snprintf(buffer, SIZE, " Channels: %08x\n", mChannels);
2243    result.append(buffer);
2244    snprintf(buffer, SIZE, " Acoustics %08x\n", mAcoustics);
2245    result.append(buffer);
2246    snprintf(buffer, SIZE, " Devices %08x\n", mDevice);
2247    result.append(buffer);
2248    snprintf(buffer, SIZE, " Ref Count %d\n", mRefCount);
2249    result.append(buffer);
2250    write(fd, result.string(), result.size());
2251
2252    return NO_ERROR;
2253}
2254
2255// --- StreamDescriptor class implementation
2256
2257void AudioPolicyManagerBase::StreamDescriptor::dump(char* buffer, size_t size)
2258{
2259    snprintf(buffer, size, "      %02d         %02d         %02d         %d\n",
2260            mIndexMin,
2261            mIndexMax,
2262            mIndexCur,
2263            mCanBeMuted);
2264}
2265
2266// --- EffectDescriptor class implementation
2267
2268status_t AudioPolicyManagerBase::EffectDescriptor::dump(int fd)
2269{
2270    const size_t SIZE = 256;
2271    char buffer[SIZE];
2272    String8 result;
2273
2274    snprintf(buffer, SIZE, " I/O: %d\n", mIo);
2275    result.append(buffer);
2276    snprintf(buffer, SIZE, " Strategy: %d\n", mStrategy);
2277    result.append(buffer);
2278    snprintf(buffer, SIZE, " Session: %d\n", mSession);
2279    result.append(buffer);
2280    snprintf(buffer, SIZE, " Name: %s\n",  mDesc.name);
2281    result.append(buffer);
2282    write(fd, result.string(), result.size());
2283
2284    return NO_ERROR;
2285}
2286
2287
2288
2289}; // namespace android
2290