| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "APM::AudioPolicyEngine" |
| //#define LOG_NDEBUG 0 |
| |
| //#define VERY_VERBOSE_LOGGING |
| #ifdef VERY_VERBOSE_LOGGING |
| #define ALOGVV ALOGV |
| #else |
| #define ALOGVV(a...) do { } while(0) |
| #endif |
| |
| #include "Engine.h" |
| #include <android-base/macros.h> |
| #include <AudioPolicyManagerObserver.h> |
| #include <PolicyAudioPort.h> |
| #include <IOProfile.h> |
| #include <AudioIODescriptorInterface.h> |
| #include <policy.h> |
| #include <media/AudioContainers.h> |
| #include <utils/String8.h> |
| #include <utils/Log.h> |
| |
| namespace android |
| { |
| namespace audio_policy |
| { |
| |
| struct legacy_strategy_map { const char *name; legacy_strategy id; }; |
| static const std::vector<legacy_strategy_map> gLegacyStrategy = { |
| { "STRATEGY_NONE", STRATEGY_NONE }, |
| { "STRATEGY_MEDIA", STRATEGY_MEDIA }, |
| { "STRATEGY_PHONE", STRATEGY_PHONE }, |
| { "STRATEGY_SONIFICATION", STRATEGY_SONIFICATION }, |
| { "STRATEGY_SONIFICATION_RESPECTFUL", STRATEGY_SONIFICATION_RESPECTFUL }, |
| { "STRATEGY_DTMF", STRATEGY_DTMF }, |
| { "STRATEGY_ENFORCED_AUDIBLE", STRATEGY_ENFORCED_AUDIBLE }, |
| { "STRATEGY_TRANSMITTED_THROUGH_SPEAKER", STRATEGY_TRANSMITTED_THROUGH_SPEAKER }, |
| { "STRATEGY_ACCESSIBILITY", STRATEGY_ACCESSIBILITY }, |
| { "STRATEGY_REROUTING", STRATEGY_REROUTING }, |
| { "STRATEGY_PATCH", STRATEGY_REROUTING }, // boiler to manage stream patch volume |
| }; |
| |
| Engine::Engine() |
| { |
| auto result = EngineBase::loadAudioPolicyEngineConfig(); |
| ALOGE_IF(result.nbSkippedElement != 0, |
| "Policy Engine configuration is partially invalid, skipped %zu elements", |
| result.nbSkippedElement); |
| |
| for (const auto &strategy : gLegacyStrategy) { |
| mLegacyStrategyMap[getProductStrategyByName(strategy.name)] = strategy.id; |
| } |
| } |
| |
| status_t Engine::setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) |
| { |
| switch(usage) { |
| case AUDIO_POLICY_FORCE_FOR_COMMUNICATION: |
| if (config != AUDIO_POLICY_FORCE_SPEAKER && config != AUDIO_POLICY_FORCE_BT_SCO && |
| config != AUDIO_POLICY_FORCE_NONE) { |
| ALOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config); |
| return BAD_VALUE; |
| } |
| break; |
| case AUDIO_POLICY_FORCE_FOR_MEDIA: |
| if (config != AUDIO_POLICY_FORCE_HEADPHONES && config != AUDIO_POLICY_FORCE_BT_A2DP && |
| config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && |
| config != AUDIO_POLICY_FORCE_ANALOG_DOCK && |
| config != AUDIO_POLICY_FORCE_DIGITAL_DOCK && config != AUDIO_POLICY_FORCE_NONE && |
| config != AUDIO_POLICY_FORCE_NO_BT_A2DP && config != AUDIO_POLICY_FORCE_SPEAKER ) { |
| ALOGW("setForceUse() invalid config %d for FOR_MEDIA", config); |
| return BAD_VALUE; |
| } |
| break; |
| case AUDIO_POLICY_FORCE_FOR_RECORD: |
| if (config != AUDIO_POLICY_FORCE_BT_SCO && config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && |
| config != AUDIO_POLICY_FORCE_NONE) { |
| ALOGW("setForceUse() invalid config %d for FOR_RECORD", config); |
| return BAD_VALUE; |
| } |
| break; |
| case AUDIO_POLICY_FORCE_FOR_DOCK: |
| if (config != AUDIO_POLICY_FORCE_NONE && config != AUDIO_POLICY_FORCE_BT_CAR_DOCK && |
| config != AUDIO_POLICY_FORCE_BT_DESK_DOCK && |
| config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY && |
| config != AUDIO_POLICY_FORCE_ANALOG_DOCK && |
| config != AUDIO_POLICY_FORCE_DIGITAL_DOCK) { |
| ALOGW("setForceUse() invalid config %d for FOR_DOCK", config); |
| } |
| break; |
| case AUDIO_POLICY_FORCE_FOR_SYSTEM: |
| if (config != AUDIO_POLICY_FORCE_NONE && |
| config != AUDIO_POLICY_FORCE_SYSTEM_ENFORCED) { |
| ALOGW("setForceUse() invalid config %d for FOR_SYSTEM", config); |
| } |
| break; |
| case AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO: |
| if (config != AUDIO_POLICY_FORCE_NONE && |
| config != AUDIO_POLICY_FORCE_HDMI_SYSTEM_AUDIO_ENFORCED) { |
| ALOGW("setForceUse() invalid config %d for HDMI_SYSTEM_AUDIO", config); |
| } |
| break; |
| case AUDIO_POLICY_FORCE_FOR_ENCODED_SURROUND: |
| if (config != AUDIO_POLICY_FORCE_NONE && |
| config != AUDIO_POLICY_FORCE_ENCODED_SURROUND_NEVER && |
| config != AUDIO_POLICY_FORCE_ENCODED_SURROUND_ALWAYS && |
| config != AUDIO_POLICY_FORCE_ENCODED_SURROUND_MANUAL) { |
| ALOGW("setForceUse() invalid config %d for ENCODED_SURROUND", config); |
| return BAD_VALUE; |
| } |
| break; |
| case AUDIO_POLICY_FORCE_FOR_VIBRATE_RINGING: |
| if (config != AUDIO_POLICY_FORCE_BT_SCO && config != AUDIO_POLICY_FORCE_NONE) { |
| ALOGW("setForceUse() invalid config %d for FOR_VIBRATE_RINGING", config); |
| return BAD_VALUE; |
| } |
| break; |
| default: |
| ALOGW("setForceUse() invalid usage %d", usage); |
| break; // TODO return BAD_VALUE? |
| } |
| return EngineBase::setForceUse(usage, config); |
| } |
| |
| DeviceVector Engine::getDevicesForStrategyInt(legacy_strategy strategy, |
| DeviceVector availableOutputDevices, |
| DeviceVector availableInputDevices, |
| const SwAudioOutputCollection &outputs) const |
| { |
| DeviceVector devices; |
| |
| switch (strategy) { |
| |
| case STRATEGY_TRANSMITTED_THROUGH_SPEAKER: |
| devices = availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_SPEAKER); |
| break; |
| |
| case STRATEGY_SONIFICATION_RESPECTFUL: |
| if (isInCall() || outputs.isActiveLocally(toVolumeSource(AUDIO_STREAM_VOICE_CALL))) { |
| devices = getDevicesForStrategyInt( |
| STRATEGY_SONIFICATION, availableOutputDevices, availableInputDevices, outputs); |
| } else { |
| bool media_active_locally = |
| outputs.isActiveLocally(toVolumeSource(AUDIO_STREAM_MUSIC), |
| SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY) |
| || outputs.isActiveLocally( |
| toVolumeSource(AUDIO_STREAM_ACCESSIBILITY), |
| SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY); |
| // routing is same as media without the "remote" device |
| availableOutputDevices.remove(availableOutputDevices.getDevicesFromType( |
| AUDIO_DEVICE_OUT_REMOTE_SUBMIX)); |
| devices = getDevicesForStrategyInt(STRATEGY_MEDIA, |
| availableOutputDevices, |
| availableInputDevices, outputs); |
| // if no media is playing on the device, check for mandatory use of "safe" speaker |
| // when media would have played on speaker, and the safe speaker path is available |
| if (!media_active_locally) { |
| devices.replaceDevicesByType( |
| AUDIO_DEVICE_OUT_SPEAKER, |
| availableOutputDevices.getDevicesFromType( |
| AUDIO_DEVICE_OUT_SPEAKER_SAFE)); |
| } |
| } |
| break; |
| |
| case STRATEGY_DTMF: |
| if (!isInCall()) { |
| // when off call, DTMF strategy follows the same rules as MEDIA strategy |
| devices = getDevicesForStrategyInt( |
| STRATEGY_MEDIA, availableOutputDevices, availableInputDevices, outputs); |
| break; |
| } |
| // when in call, DTMF and PHONE strategies follow the same rules |
| FALLTHROUGH_INTENDED; |
| |
| case STRATEGY_PHONE: |
| // Force use of only devices on primary output if: |
| // - in call AND |
| // - cannot route from voice call RX OR |
| // - audio HAL version is < 3.0 and TX device is on the primary HW module |
| if (getPhoneState() == AUDIO_MODE_IN_CALL) { |
| audio_devices_t txDevice = getDeviceForInputSource( |
| AUDIO_SOURCE_VOICE_COMMUNICATION)->type(); |
| sp<AudioOutputDescriptor> primaryOutput = outputs.getPrimaryOutput(); |
| DeviceVector availPrimaryInputDevices = |
| availableInputDevices.getDevicesFromHwModule(primaryOutput->getModuleHandle()); |
| |
| // TODO: getPrimaryOutput return only devices from first module in |
| // audio_policy_configuration.xml, hearing aid is not there, but it's |
| // a primary device |
| // FIXME: this is not the right way of solving this problem |
| DeviceVector availPrimaryOutputDevices = availableOutputDevices.getDevicesFromTypes( |
| primaryOutput->supportedDevices().types()); |
| availPrimaryOutputDevices.add( |
| availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_HEARING_AID)); |
| |
| if ((availableInputDevices.getDevice(AUDIO_DEVICE_IN_TELEPHONY_RX, |
| String8(""), AUDIO_FORMAT_DEFAULT) == nullptr) || |
| ((availPrimaryInputDevices.getDevice( |
| txDevice, String8(""), AUDIO_FORMAT_DEFAULT) != nullptr) && |
| (primaryOutput->getPolicyAudioPort()->getModuleVersionMajor() < 3))) { |
| availableOutputDevices = availPrimaryOutputDevices; |
| } |
| } |
| // for phone strategy, we first consider the forced use and then the available devices by |
| // order of priority |
| switch (getForceUse(AUDIO_POLICY_FORCE_FOR_COMMUNICATION)) { |
| case AUDIO_POLICY_FORCE_BT_SCO: |
| if (!isInCall() || strategy != STRATEGY_DTMF) { |
| devices = availableOutputDevices.getDevicesFromType( |
| AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT); |
| if (!devices.isEmpty()) break; |
| } |
| devices = availableOutputDevices.getFirstDevicesFromTypes({ |
| AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET, AUDIO_DEVICE_OUT_BLUETOOTH_SCO}); |
| if (!devices.isEmpty()) break; |
| // if SCO device is requested but no SCO device is available, fall back to default case |
| FALLTHROUGH_INTENDED; |
| |
| default: // FORCE_NONE |
| devices = availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_HEARING_AID); |
| if (!devices.isEmpty()) break; |
| // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP |
| if (!isInCall() && |
| (getForceUse(AUDIO_POLICY_FORCE_FOR_MEDIA) != AUDIO_POLICY_FORCE_NO_BT_A2DP) && |
| outputs.isA2dpSupported()) { |
| devices = availableOutputDevices.getFirstDevicesFromTypes({ |
| AUDIO_DEVICE_OUT_BLUETOOTH_A2DP, |
| AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES}); |
| if (!devices.isEmpty()) break; |
| } |
| devices = availableOutputDevices.getFirstDevicesFromTypes({ |
| AUDIO_DEVICE_OUT_WIRED_HEADPHONE, AUDIO_DEVICE_OUT_WIRED_HEADSET, |
| AUDIO_DEVICE_OUT_LINE, AUDIO_DEVICE_OUT_USB_HEADSET, |
| AUDIO_DEVICE_OUT_USB_DEVICE}); |
| if (!devices.isEmpty()) break; |
| if (!isInCall()) { |
| devices = availableOutputDevices.getFirstDevicesFromTypes({ |
| AUDIO_DEVICE_OUT_USB_ACCESSORY, AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET, |
| AUDIO_DEVICE_OUT_AUX_DIGITAL, AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET}); |
| if (!devices.isEmpty()) break; |
| } |
| devices = availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_EARPIECE); |
| break; |
| |
| case AUDIO_POLICY_FORCE_SPEAKER: |
| // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to |
| // A2DP speaker when forcing to speaker output |
| if (!isInCall() && |
| (getForceUse(AUDIO_POLICY_FORCE_FOR_MEDIA) != AUDIO_POLICY_FORCE_NO_BT_A2DP) && |
| outputs.isA2dpSupported()) { |
| devices = availableOutputDevices.getDevicesFromType( |
| AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER); |
| if (!devices.isEmpty()) break; |
| } |
| if (!isInCall()) { |
| devices = availableOutputDevices.getFirstDevicesFromTypes({ |
| AUDIO_DEVICE_OUT_USB_ACCESSORY, AUDIO_DEVICE_OUT_USB_DEVICE, |
| AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET, AUDIO_DEVICE_OUT_AUX_DIGITAL, |
| AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET}); |
| if (!devices.isEmpty()) break; |
| } |
| devices = availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_SPEAKER); |
| break; |
| } |
| break; |
| |
| case STRATEGY_SONIFICATION: |
| |
| // If incall, just select the STRATEGY_PHONE device |
| if (isInCall() || |
| outputs.isActiveLocally(toVolumeSource(AUDIO_STREAM_VOICE_CALL))) { |
| devices = getDevicesForStrategyInt( |
| STRATEGY_PHONE, availableOutputDevices, availableInputDevices, outputs); |
| break; |
| } |
| FALLTHROUGH_INTENDED; |
| |
| case STRATEGY_ENFORCED_AUDIBLE: |
| // strategy STRATEGY_ENFORCED_AUDIBLE uses same routing policy as STRATEGY_SONIFICATION |
| // except: |
| // - when in call where it doesn't default to STRATEGY_PHONE behavior |
| // - in countries where not enforced in which case it follows STRATEGY_MEDIA |
| |
| if ((strategy == STRATEGY_SONIFICATION) || |
| (getForceUse(AUDIO_POLICY_FORCE_FOR_SYSTEM) == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED)) { |
| devices = availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_SPEAKER); |
| } |
| |
| // if SCO headset is connected and we are told to use it, play ringtone over |
| // speaker and BT SCO |
| if (!availableOutputDevices.getDevicesFromTypes(getAudioDeviceOutAllScoSet()).isEmpty()) { |
| DeviceVector devices2; |
| devices2 = availableOutputDevices.getFirstDevicesFromTypes({ |
| AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT, AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET, |
| AUDIO_DEVICE_OUT_BLUETOOTH_SCO}); |
| // Use ONLY Bluetooth SCO output when ringing in vibration mode |
| if (!((getForceUse(AUDIO_POLICY_FORCE_FOR_SYSTEM) == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED) |
| && (strategy == STRATEGY_ENFORCED_AUDIBLE))) { |
| if (getForceUse(AUDIO_POLICY_FORCE_FOR_VIBRATE_RINGING) |
| == AUDIO_POLICY_FORCE_BT_SCO) { |
| if (!devices2.isEmpty()) { |
| devices = devices2; |
| break; |
| } |
| } |
| } |
| // Use both Bluetooth SCO and phone default output when ringing in normal mode |
| if (getForceUse(AUDIO_POLICY_FORCE_FOR_COMMUNICATION) == AUDIO_POLICY_FORCE_BT_SCO) { |
| if (strategy == STRATEGY_SONIFICATION) { |
| devices.replaceDevicesByType( |
| AUDIO_DEVICE_OUT_SPEAKER, |
| availableOutputDevices.getDevicesFromType( |
| AUDIO_DEVICE_OUT_SPEAKER_SAFE)); |
| } |
| if (!devices2.isEmpty()) { |
| devices.add(devices2); |
| break; |
| } |
| } |
| } |
| // The second device used for sonification is the same as the device used by media strategy |
| FALLTHROUGH_INTENDED; |
| |
| case STRATEGY_ACCESSIBILITY: |
| if (strategy == STRATEGY_ACCESSIBILITY) { |
| // do not route accessibility prompts to a digital output currently configured with a |
| // compressed format as they would likely not be mixed and dropped. |
| for (size_t i = 0; i < outputs.size(); i++) { |
| sp<AudioOutputDescriptor> desc = outputs.valueAt(i); |
| if (desc->isActive() && !audio_is_linear_pcm(desc->getFormat())) { |
| availableOutputDevices.remove(desc->devices().getDevicesFromTypes({ |
| AUDIO_DEVICE_OUT_HDMI, AUDIO_DEVICE_OUT_SPDIF, |
| AUDIO_DEVICE_OUT_HDMI_ARC})); |
| } |
| } |
| if (outputs.isActive(toVolumeSource(AUDIO_STREAM_RING)) || |
| outputs.isActive(toVolumeSource(AUDIO_STREAM_ALARM))) { |
| return getDevicesForStrategyInt( |
| STRATEGY_SONIFICATION, availableOutputDevices, availableInputDevices, outputs); |
| } |
| if (isInCall()) { |
| return getDevicesForStrategyInt( |
| STRATEGY_PHONE, availableOutputDevices, availableInputDevices, outputs); |
| } |
| } |
| // For other cases, STRATEGY_ACCESSIBILITY behaves like STRATEGY_MEDIA |
| FALLTHROUGH_INTENDED; |
| |
| // FIXME: STRATEGY_REROUTING follow STRATEGY_MEDIA for now |
| case STRATEGY_REROUTING: |
| case STRATEGY_MEDIA: { |
| DeviceVector devices2; |
| if (strategy != STRATEGY_SONIFICATION) { |
| // no sonification on remote submix (e.g. WFD) |
| sp<DeviceDescriptor> remoteSubmix; |
| if ((remoteSubmix = availableOutputDevices.getDevice( |
| AUDIO_DEVICE_OUT_REMOTE_SUBMIX, String8("0"), |
| AUDIO_FORMAT_DEFAULT)) != nullptr) { |
| devices2.add(remoteSubmix); |
| } |
| } |
| if (isInCall() && (strategy == STRATEGY_MEDIA)) { |
| devices = getDevicesForStrategyInt( |
| STRATEGY_PHONE, availableOutputDevices, availableInputDevices, outputs); |
| break; |
| } |
| // FIXME: Find a better solution to prevent routing to BT hearing aid(b/122931261). |
| if ((devices2.isEmpty()) && |
| (getForceUse(AUDIO_POLICY_FORCE_FOR_MEDIA) != AUDIO_POLICY_FORCE_NO_BT_A2DP)) { |
| devices2 = availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_HEARING_AID); |
| } |
| if ((devices2.isEmpty()) && |
| (getForceUse(AUDIO_POLICY_FORCE_FOR_MEDIA) == AUDIO_POLICY_FORCE_SPEAKER)) { |
| devices2 = availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_SPEAKER); |
| } |
| if (devices2.isEmpty() && (getLastRemovableMediaDevices().size() > 0)) { |
| if ((getForceUse(AUDIO_POLICY_FORCE_FOR_MEDIA) != AUDIO_POLICY_FORCE_NO_BT_A2DP) && |
| outputs.isA2dpSupported()) { |
| // Get the last connected device of wired and bluetooth a2dp |
| devices2 = availableOutputDevices.getFirstDevicesFromTypes( |
| getLastRemovableMediaDevices()); |
| } else { |
| // Get the last connected device of wired except bluetooth a2dp |
| devices2 = availableOutputDevices.getFirstDevicesFromTypes( |
| getLastRemovableMediaDevices(GROUP_WIRED)); |
| } |
| } |
| if ((devices2.isEmpty()) && (strategy != STRATEGY_SONIFICATION)) { |
| // no sonification on aux digital (e.g. HDMI) |
| devices2 = availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_AUX_DIGITAL); |
| } |
| if ((devices2.isEmpty()) && |
| (getForceUse(AUDIO_POLICY_FORCE_FOR_DOCK) == AUDIO_POLICY_FORCE_ANALOG_DOCK)) { |
| devices2 = availableOutputDevices.getDevicesFromType( |
| AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET); |
| } |
| if (devices2.isEmpty()) { |
| devices2 = availableOutputDevices.getDevicesFromType(AUDIO_DEVICE_OUT_SPEAKER); |
| } |
| DeviceVector devices3; |
| if (strategy == STRATEGY_MEDIA) { |
| // ARC, SPDIF and AUX_LINE can co-exist with others. |
| devices3 = availableOutputDevices.getDevicesFromTypes({ |
| AUDIO_DEVICE_OUT_HDMI_ARC, AUDIO_DEVICE_OUT_SPDIF, AUDIO_DEVICE_OUT_AUX_LINE}); |
| } |
| |
| devices2.add(devices3); |
| // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or |
| // STRATEGY_ENFORCED_AUDIBLE, AUDIO_DEVICE_NONE otherwise |
| devices.add(devices2); |
| |
| // If hdmi system audio mode is on, remove speaker out of output list. |
| if ((strategy == STRATEGY_MEDIA) && |
| (getForceUse(AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO) == |
| AUDIO_POLICY_FORCE_HDMI_SYSTEM_AUDIO_ENFORCED)) { |
| devices.remove(devices.getDevicesFromType(AUDIO_DEVICE_OUT_SPEAKER)); |
| } |
| |
| // for STRATEGY_SONIFICATION: |
| // if SPEAKER was selected, and SPEAKER_SAFE is available, use SPEAKER_SAFE instead |
| if (strategy == STRATEGY_SONIFICATION) { |
| devices.replaceDevicesByType( |
| AUDIO_DEVICE_OUT_SPEAKER, |
| availableOutputDevices.getDevicesFromType( |
| AUDIO_DEVICE_OUT_SPEAKER_SAFE)); |
| } |
| } break; |
| |
| default: |
| ALOGW("getDevicesForStrategy() unknown strategy: %d", strategy); |
| break; |
| } |
| |
| if (devices.isEmpty()) { |
| ALOGV("getDevicesForStrategy() no device found for strategy %d", strategy); |
| sp<DeviceDescriptor> defaultOutputDevice = getApmObserver()->getDefaultOutputDevice(); |
| if (defaultOutputDevice != nullptr) { |
| devices.add(defaultOutputDevice); |
| } |
| ALOGE_IF(devices.isEmpty(), |
| "getDevicesForStrategy() no default device defined"); |
| } |
| |
| ALOGVV("getDevices" |
| "ForStrategy() strategy %d, device %x", strategy, devices.types()); |
| return devices; |
| } |
| |
| |
| sp<DeviceDescriptor> Engine::getDeviceForInputSource(audio_source_t inputSource) const |
| { |
| const DeviceVector availableOutputDevices = getApmObserver()->getAvailableOutputDevices(); |
| const DeviceVector availableInputDevices = getApmObserver()->getAvailableInputDevices(); |
| const SwAudioOutputCollection &outputs = getApmObserver()->getOutputs(); |
| DeviceVector availableDevices = availableInputDevices; |
| sp<AudioOutputDescriptor> primaryOutput = outputs.getPrimaryOutput(); |
| DeviceVector availablePrimaryDevices = availableInputDevices.getDevicesFromHwModule( |
| primaryOutput->getModuleHandle()); |
| sp<DeviceDescriptor> device; |
| |
| // when a call is active, force device selection to match source VOICE_COMMUNICATION |
| // for most other input sources to avoid rerouting call TX audio |
| if (isInCall()) { |
| switch (inputSource) { |
| case AUDIO_SOURCE_DEFAULT: |
| case AUDIO_SOURCE_MIC: |
| case AUDIO_SOURCE_VOICE_RECOGNITION: |
| case AUDIO_SOURCE_UNPROCESSED: |
| case AUDIO_SOURCE_HOTWORD: |
| case AUDIO_SOURCE_CAMCORDER: |
| case AUDIO_SOURCE_VOICE_PERFORMANCE: |
| inputSource = AUDIO_SOURCE_VOICE_COMMUNICATION; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| switch (inputSource) { |
| case AUDIO_SOURCE_DEFAULT: |
| case AUDIO_SOURCE_MIC: |
| device = availableDevices.getDevice( |
| AUDIO_DEVICE_IN_BLUETOOTH_A2DP, String8(""), AUDIO_FORMAT_DEFAULT); |
| if (device != nullptr) break; |
| if (getForceUse(AUDIO_POLICY_FORCE_FOR_RECORD) == AUDIO_POLICY_FORCE_BT_SCO) { |
| device = availableDevices.getDevice( |
| AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET, String8(""), AUDIO_FORMAT_DEFAULT); |
| if (device != nullptr) break; |
| } |
| device = availableDevices.getFirstExistingDevice({ |
| AUDIO_DEVICE_IN_WIRED_HEADSET, AUDIO_DEVICE_IN_USB_HEADSET, |
| AUDIO_DEVICE_IN_USB_DEVICE, AUDIO_DEVICE_IN_BUILTIN_MIC}); |
| break; |
| |
| case AUDIO_SOURCE_VOICE_COMMUNICATION: |
| // Allow only use of devices on primary input if in call and HAL does not support routing |
| // to voice call path. |
| if ((getPhoneState() == AUDIO_MODE_IN_CALL) && |
| (availableOutputDevices.getDevice(AUDIO_DEVICE_OUT_TELEPHONY_TX, |
| String8(""), AUDIO_FORMAT_DEFAULT)) == nullptr) { |
| availableDevices = availablePrimaryDevices; |
| } |
| |
| switch (getForceUse(AUDIO_POLICY_FORCE_FOR_COMMUNICATION)) { |
| case AUDIO_POLICY_FORCE_BT_SCO: |
| // if SCO device is requested but no SCO device is available, fall back to default case |
| device = availableDevices.getDevice( |
| AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET, String8(""), AUDIO_FORMAT_DEFAULT); |
| if (device != nullptr) { |
| break; |
| } |
| FALLTHROUGH_INTENDED; |
| |
| default: // FORCE_NONE |
| device = availableDevices.getFirstExistingDevice({ |
| AUDIO_DEVICE_IN_WIRED_HEADSET, AUDIO_DEVICE_IN_USB_HEADSET, |
| AUDIO_DEVICE_IN_USB_DEVICE, AUDIO_DEVICE_IN_BUILTIN_MIC}); |
| break; |
| |
| case AUDIO_POLICY_FORCE_SPEAKER: |
| device = availableDevices.getFirstExistingDevice({ |
| AUDIO_DEVICE_IN_BACK_MIC, AUDIO_DEVICE_IN_BUILTIN_MIC}); |
| break; |
| } |
| break; |
| |
| case AUDIO_SOURCE_VOICE_RECOGNITION: |
| case AUDIO_SOURCE_UNPROCESSED: |
| case AUDIO_SOURCE_HOTWORD: |
| if (inputSource == AUDIO_SOURCE_HOTWORD) { |
| availableDevices = availablePrimaryDevices; |
| } |
| if (getForceUse(AUDIO_POLICY_FORCE_FOR_RECORD) == AUDIO_POLICY_FORCE_BT_SCO) { |
| device = availableDevices.getDevice( |
| AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET, String8(""), AUDIO_FORMAT_DEFAULT); |
| if (device != nullptr) break; |
| } |
| device = availableDevices.getFirstExistingDevice({ |
| AUDIO_DEVICE_IN_WIRED_HEADSET, AUDIO_DEVICE_IN_USB_HEADSET, |
| AUDIO_DEVICE_IN_USB_DEVICE, AUDIO_DEVICE_IN_BUILTIN_MIC}); |
| break; |
| case AUDIO_SOURCE_CAMCORDER: |
| // For a device without built-in mic, adding usb device |
| device = availableDevices.getFirstExistingDevice({ |
| AUDIO_DEVICE_IN_BACK_MIC, AUDIO_DEVICE_IN_BUILTIN_MIC, |
| AUDIO_DEVICE_IN_USB_DEVICE}); |
| break; |
| case AUDIO_SOURCE_VOICE_DOWNLINK: |
| case AUDIO_SOURCE_VOICE_CALL: |
| case AUDIO_SOURCE_VOICE_UPLINK: |
| device = availableDevices.getDevice( |
| AUDIO_DEVICE_IN_VOICE_CALL, String8(""), AUDIO_FORMAT_DEFAULT); |
| break; |
| case AUDIO_SOURCE_VOICE_PERFORMANCE: |
| device = availableDevices.getFirstExistingDevice({ |
| AUDIO_DEVICE_IN_WIRED_HEADSET, AUDIO_DEVICE_IN_USB_HEADSET, |
| AUDIO_DEVICE_IN_USB_DEVICE, AUDIO_DEVICE_IN_BUILTIN_MIC}); |
| break; |
| case AUDIO_SOURCE_REMOTE_SUBMIX: |
| device = availableDevices.getDevice( |
| AUDIO_DEVICE_IN_REMOTE_SUBMIX, String8(""), AUDIO_FORMAT_DEFAULT); |
| break; |
| case AUDIO_SOURCE_FM_TUNER: |
| device = availableDevices.getDevice( |
| AUDIO_DEVICE_IN_FM_TUNER, String8(""), AUDIO_FORMAT_DEFAULT); |
| break; |
| case AUDIO_SOURCE_ECHO_REFERENCE: |
| device = availableDevices.getDevice( |
| AUDIO_DEVICE_IN_ECHO_REFERENCE, String8(""), AUDIO_FORMAT_DEFAULT); |
| break; |
| default: |
| ALOGW("getDeviceForInputSource() invalid input source %d", inputSource); |
| break; |
| } |
| if (device == nullptr) { |
| ALOGV("getDeviceForInputSource() no device found for source %d", inputSource); |
| device = availableDevices.getDevice( |
| AUDIO_DEVICE_IN_STUB, String8(""), AUDIO_FORMAT_DEFAULT); |
| ALOGE_IF(device == nullptr, |
| "getDeviceForInputSource() no default device defined"); |
| } |
| ALOGV_IF(device != nullptr, |
| "getDeviceForInputSource()input source %d, device %08x", |
| inputSource, device->type()); |
| return device; |
| } |
| |
| void Engine::updateDeviceSelectionCache() |
| { |
| for (const auto &iter : getProductStrategies()) { |
| const auto& strategy = iter.second; |
| auto devices = getDevicesForProductStrategy(strategy->getId()); |
| mDevicesForStrategies[strategy->getId()] = devices; |
| strategy->setDeviceTypes(devices.types()); |
| strategy->setDeviceAddress(devices.getFirstValidAddress().c_str()); |
| } |
| } |
| |
| DeviceVector Engine::getDevicesForProductStrategy(product_strategy_t strategy) const { |
| DeviceVector availableOutputDevices = getApmObserver()->getAvailableOutputDevices(); |
| |
| // check if this strategy has a preferred device that is available, |
| // if yes, give priority to it |
| AudioDeviceTypeAddr preferredStrategyDevice; |
| const status_t status = getPreferredDeviceForStrategy(strategy, preferredStrategyDevice); |
| if (status == NO_ERROR) { |
| // there is a preferred device, is it available? |
| sp<DeviceDescriptor> preferredAvailableDevDescr = availableOutputDevices.getDevice( |
| preferredStrategyDevice.mType, |
| String8(preferredStrategyDevice.mAddress.c_str()), |
| AUDIO_FORMAT_DEFAULT); |
| if (preferredAvailableDevDescr != nullptr) { |
| ALOGVV("%s using pref device 0x%08x/%s for strategy %u", __FUNCTION__, |
| preferredStrategyDevice.mType, preferredStrategyDevice.mAddress, strategy); |
| return DeviceVector(preferredAvailableDevDescr); |
| } |
| } |
| |
| DeviceVector availableInputDevices = getApmObserver()->getAvailableInputDevices(); |
| const SwAudioOutputCollection& outputs = getApmObserver()->getOutputs(); |
| auto legacyStrategy = mLegacyStrategyMap.find(strategy) != end(mLegacyStrategyMap) ? |
| mLegacyStrategyMap.at(strategy) : STRATEGY_NONE; |
| return getDevicesForStrategyInt(legacyStrategy, |
| availableOutputDevices, |
| availableInputDevices, outputs); |
| } |
| |
| DeviceVector Engine::getOutputDevicesForAttributes(const audio_attributes_t &attributes, |
| const sp<DeviceDescriptor> &preferredDevice, |
| bool fromCache) const |
| { |
| // First check for explict routing device |
| if (preferredDevice != nullptr) { |
| ALOGV("%s explicit Routing on device %s", __func__, preferredDevice->toString().c_str()); |
| return DeviceVector(preferredDevice); |
| } |
| product_strategy_t strategy = getProductStrategyForAttributes(attributes); |
| const DeviceVector availableOutputDevices = getApmObserver()->getAvailableOutputDevices(); |
| const SwAudioOutputCollection &outputs = getApmObserver()->getOutputs(); |
| // |
| // @TODO: what is the priority of explicit routing? Shall it be considered first as it used to |
| // be by APM? |
| // |
| // Honor explicit routing requests only if all active clients have a preferred route in which |
| // case the last active client route is used |
| sp<DeviceDescriptor> device = findPreferredDevice(outputs, strategy, availableOutputDevices); |
| if (device != nullptr) { |
| return DeviceVector(device); |
| } |
| |
| return fromCache? mDevicesForStrategies.at(strategy) : getDevicesForProductStrategy(strategy); |
| } |
| |
| DeviceVector Engine::getOutputDevicesForStream(audio_stream_type_t stream, bool fromCache) const |
| { |
| auto attributes = getAttributesForStreamType(stream); |
| return getOutputDevicesForAttributes(attributes, nullptr, fromCache); |
| } |
| |
| sp<DeviceDescriptor> Engine::getInputDeviceForAttributes(const audio_attributes_t &attr, |
| sp<AudioPolicyMix> *mix) const |
| { |
| const auto &policyMixes = getApmObserver()->getAudioPolicyMixCollection(); |
| const auto availableInputDevices = getApmObserver()->getAvailableInputDevices(); |
| const auto &inputs = getApmObserver()->getInputs(); |
| std::string address; |
| |
| // |
| // Explicit Routing ??? what is the priority of explicit routing? Shall it be considered |
| // first as it used to be by APM? |
| // |
| // Honor explicit routing requests only if all active clients have a preferred route in which |
| // case the last active client route is used |
| sp<DeviceDescriptor> device = |
| findPreferredDevice(inputs, attr.source, availableInputDevices); |
| if (device != nullptr) { |
| return device; |
| } |
| |
| device = policyMixes.getDeviceAndMixForInputSource(attr.source, availableInputDevices, mix); |
| if (device != nullptr) { |
| return device; |
| } |
| |
| device = getDeviceForInputSource(attr.source); |
| if (device == nullptr || !audio_is_remote_submix_device(device->type())) { |
| // Return immediately if the device is null or it is not a remote submix device. |
| return device; |
| } |
| |
| // For remote submix device, try to find the device by address. |
| address = "0"; |
| std::size_t pos; |
| std::string tags { attr.tags }; |
| if ((pos = tags.find("addr=")) != std::string::npos) { |
| address = tags.substr(pos + std::strlen("addr=")); |
| } |
| return availableInputDevices.getDevice(device->type(), |
| String8(address.c_str()), |
| AUDIO_FORMAT_DEFAULT); |
| } |
| |
| } // namespace audio_policy |
| } // namespace android |
| |
| |
