/*
* Copyright (C) 2009 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 "AudioPolicyManagerBase"
//#define LOG_NDEBUG 0
//#define VERY_VERBOSE_LOGGING
#ifdef VERY_VERBOSE_LOGGING
#define ALOGVV ALOGV
#else
#define ALOGVV(a...) do { } while(0)
#endif
// A device mask for all audio input devices that are considered "virtual" when evaluating
// active inputs in getActiveInput()
#define APM_AUDIO_IN_DEVICE_VIRTUAL_ALL AUDIO_DEVICE_IN_REMOTE_SUBMIX
// A device mask for all audio output devices that are considered "remote" when evaluating
// active output devices in isStreamActiveRemotely()
#define APM_AUDIO_OUT_DEVICE_REMOTE_ALL AUDIO_DEVICE_OUT_REMOTE_SUBMIX
#include <inttypes.h>
#include <math.h>
#include <cutils/properties.h>
#include <utils/Log.h>
#include <utils/Timers.h>
#include <hardware/audio.h>
#include <hardware/audio_effect.h>
#include <hardware_legacy/audio_policy_conf.h>
#include <hardware_legacy/AudioPolicyManagerBase.h>
namespace android_audio_legacy {
// ----------------------------------------------------------------------------
// AudioPolicyInterface implementation
// ----------------------------------------------------------------------------
status_t AudioPolicyManagerBase::setDeviceConnectionState(audio_devices_t device,
AudioSystem::device_connection_state state,
const char *device_address)
{
// device_address can be NULL and should be handled as an empty string in this case,
// and it is not checked by AudioPolicyInterfaceImpl.cpp
if (device_address == NULL) {
device_address = "";
}
ALOGV("setDeviceConnectionState() device: 0x%X, state %d, address %s", device, state, device_address);
// connect/disconnect only 1 device at a time
if (!audio_is_output_device(device) && !audio_is_input_device(device)) return BAD_VALUE;
if (strlen(device_address) >= MAX_DEVICE_ADDRESS_LEN) {
ALOGE("setDeviceConnectionState() invalid address: %s", device_address);
return BAD_VALUE;
}
// handle output devices
if (audio_is_output_device(device)) {
SortedVector <audio_io_handle_t> outputs;
if (!mHasA2dp && audio_is_a2dp_out_device(device)) {
ALOGE("setDeviceConnectionState() invalid A2DP device: %x", device);
return BAD_VALUE;
}
if (!mHasUsb && audio_is_usb_out_device(device)) {
ALOGE("setDeviceConnectionState() invalid USB audio device: %x", device);
return BAD_VALUE;
}
if (!mHasRemoteSubmix && audio_is_remote_submix_device((audio_devices_t)device)) {
ALOGE("setDeviceConnectionState() invalid remote submix audio device: %x", device);
return BAD_VALUE;
}
// save a copy of the opened output descriptors before any output is opened or closed
// by checkOutputsForDevice(). This will be needed by checkOutputForAllStrategies()
mPreviousOutputs = mOutputs;
String8 paramStr;
switch (state)
{
// handle output device connection
case AudioSystem::DEVICE_STATE_AVAILABLE:
if (mAvailableOutputDevices & device) {
ALOGW("setDeviceConnectionState() device already connected: %x", device);
return INVALID_OPERATION;
}
ALOGV("setDeviceConnectionState() connecting device %x", device);
if (mHasA2dp && audio_is_a2dp_out_device(device)) {
// handle A2DP device connection
AudioParameter param;
param.add(String8(AUDIO_PARAMETER_A2DP_SINK_ADDRESS), String8(device_address));
paramStr = param.toString();
} else if (mHasUsb && audio_is_usb_out_device(device)) {
// handle USB device connection
paramStr = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
}
if (checkOutputsForDevice(device, state, outputs, paramStr) != NO_ERROR) {
return INVALID_OPERATION;
}
ALOGV("setDeviceConnectionState() checkOutputsForDevice() returned %zu outputs",
outputs.size());
// register new device as available
mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices | device);
if (mHasA2dp && audio_is_a2dp_out_device(device)) {
// handle A2DP device connection
mA2dpDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
mA2dpSuspended = false;
} else if (audio_is_bluetooth_sco_device(device)) {
// handle SCO device connection
mScoDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
} else if (mHasUsb && audio_is_usb_out_device(device)) {
// handle USB device connection
mUsbOutCardAndDevice = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
}
break;
// handle output device disconnection
case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
if (!(mAvailableOutputDevices & device)) {
ALOGW("setDeviceConnectionState() device not connected: %x", device);
return INVALID_OPERATION;
}
ALOGV("setDeviceConnectionState() disconnecting device %x", device);
// remove device from available output devices
mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices & ~device);
checkOutputsForDevice(device, state, outputs, paramStr);
if (mHasA2dp && audio_is_a2dp_out_device(device)) {
// handle A2DP device disconnection
mA2dpDeviceAddress = "";
mA2dpSuspended = false;
} else if (audio_is_bluetooth_sco_device(device)) {
// handle SCO device disconnection
mScoDeviceAddress = "";
} else if (mHasUsb && audio_is_usb_out_device(device)) {
// handle USB device disconnection
mUsbOutCardAndDevice = "";
}
// not currently handling multiple simultaneous submixes: ignoring remote submix
// case and address
} break;
default:
ALOGE("setDeviceConnectionState() invalid state: %x", state);
return BAD_VALUE;
}
checkA2dpSuspend();
checkOutputForAllStrategies();
// outputs must be closed after checkOutputForAllStrategies() is executed
if (!outputs.isEmpty()) {
for (size_t i = 0; i < outputs.size(); i++) {
AudioOutputDescriptor *desc = mOutputs.valueFor(outputs[i]);
// close unused outputs after device disconnection or direct outputs that have been
// opened by checkOutputsForDevice() to query dynamic parameters
if ((state == AudioSystem::DEVICE_STATE_UNAVAILABLE) ||
(((desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) != 0) &&
(desc->mDirectOpenCount == 0))) {
closeOutput(outputs[i]);
}
}
}
updateDevicesAndOutputs();
for (size_t i = 0; i < mOutputs.size(); i++) {
// do not force device change on duplicated output because if device is 0, it will
// also force a device 0 for the two outputs it is duplicated to which may override
// a valid device selection on those outputs.
setOutputDevice(mOutputs.keyAt(i),
getNewDevice(mOutputs.keyAt(i), true /*fromCache*/),
!mOutputs.valueAt(i)->isDuplicated(),
0);
}
return NO_ERROR;
} // end if is output device
// handle input devices
if (audio_is_input_device(device)) {
SortedVector <audio_io_handle_t> inputs;
String8 paramStr;
switch (state)
{
// handle input device connection
case AudioSystem::DEVICE_STATE_AVAILABLE: {
if (mAvailableInputDevices & device) {
ALOGW("setDeviceConnectionState() device already connected: %d", device);
return INVALID_OPERATION;
}
if (mHasUsb && audio_is_usb_in_device(device)) {
// handle USB device connection
paramStr = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
} else if (mHasA2dp && audio_is_a2dp_in_device(device)) {
// handle A2DP device connection
AudioParameter param;
param.add(String8(AUDIO_PARAMETER_A2DP_SOURCE_ADDRESS), String8(device_address));
paramStr = param.toString();
}
if (checkInputsForDevice(device, state, inputs, paramStr) != NO_ERROR) {
return INVALID_OPERATION;
}
mAvailableInputDevices = mAvailableInputDevices | (device & ~AUDIO_DEVICE_BIT_IN);
}
break;
// handle input device disconnection
case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
if (!(mAvailableInputDevices & device)) {
ALOGW("setDeviceConnectionState() device not connected: %d", device);
return INVALID_OPERATION;
}
checkInputsForDevice(device, state, inputs, paramStr);
mAvailableInputDevices = (audio_devices_t) (mAvailableInputDevices & ~device);
} break;
default:
ALOGE("setDeviceConnectionState() invalid state: %x", state);
return BAD_VALUE;
}
closeAllInputs();
return NO_ERROR;
} // end if is input device
ALOGW("setDeviceConnectionState() invalid device: %x", device);
return BAD_VALUE;
}
AudioSystem::device_connection_state AudioPolicyManagerBase::getDeviceConnectionState(audio_devices_t device,
const char *device_address)
{
// similar to setDeviceConnectionState
if (device_address == NULL) {
device_address = "";
}
AudioSystem::device_connection_state state = AudioSystem::DEVICE_STATE_UNAVAILABLE;
String8 address = String8(device_address);
if (audio_is_output_device(device)) {
if (device & mAvailableOutputDevices) {
if (audio_is_a2dp_out_device(device) &&
(!mHasA2dp || (address != "" && mA2dpDeviceAddress != address))) {
return state;
}
if (audio_is_bluetooth_sco_device(device) &&
address != "" && mScoDeviceAddress != address) {
return state;
}
if (audio_is_usb_out_device(device) &&
(!mHasUsb || (address != "" && mUsbOutCardAndDevice != address))) {
ALOGE("getDeviceConnectionState() invalid device: %x", device);
return state;
}
if (audio_is_remote_submix_device((audio_devices_t)device) && !mHasRemoteSubmix) {
return state;
}
state = AudioSystem::DEVICE_STATE_AVAILABLE;
}
} else if (audio_is_input_device(device)) {
if (device & mAvailableInputDevices) {
state = AudioSystem::DEVICE_STATE_AVAILABLE;
}
}
return state;
}
void AudioPolicyManagerBase::setPhoneState(int state)
{
ALOGV("setPhoneState() state %d", state);
audio_devices_t newDevice = AUDIO_DEVICE_NONE;
if (state < 0 || state >= AudioSystem::NUM_MODES) {
ALOGW("setPhoneState() invalid state %d", state);
return;
}
if (state == mPhoneState ) {
ALOGW("setPhoneState() setting same state %d", state);
return;
}
// if leaving call state, handle special case of active streams
// pertaining to sonification strategy see handleIncallSonification()
if (isInCall()) {
ALOGV("setPhoneState() in call state management: new state is %d", state);
for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
handleIncallSonification(stream, false, true);
}
}
// store previous phone state for management of sonification strategy below
int oldState = mPhoneState;
mPhoneState = state;
bool force = false;
// are we entering or starting a call
if (!isStateInCall(oldState) && isStateInCall(state)) {
ALOGV(" Entering call in setPhoneState()");
// force routing command to audio hardware when starting a call
// even if no device change is needed
force = true;
for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) {
mStreams[AUDIO_STREAM_DTMF].mVolumeCurve[j] =
sVolumeProfiles[AUDIO_STREAM_VOICE_CALL][j];
}
} else if (isStateInCall(oldState) && !isStateInCall(state)) {
ALOGV(" Exiting call in setPhoneState()");
// force routing command to audio hardware when exiting a call
// even if no device change is needed
force = true;
for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) {
mStreams[AUDIO_STREAM_DTMF].mVolumeCurve[j] =
sVolumeProfiles[AUDIO_STREAM_DTMF][j];
}
} else if (isStateInCall(state) && (state != oldState)) {
ALOGV(" Switching between telephony and VoIP in setPhoneState()");
// force routing command to audio hardware when switching between telephony and VoIP
// even if no device change is needed
force = true;
}
// check for device and output changes triggered by new phone state
newDevice = getNewDevice(mPrimaryOutput, false /*fromCache*/);
checkA2dpSuspend();
checkOutputForAllStrategies();
updateDevicesAndOutputs();
AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mPrimaryOutput);
// force routing command to audio hardware when ending call
// even if no device change is needed
if (isStateInCall(oldState) && newDevice == AUDIO_DEVICE_NONE) {
newDevice = hwOutputDesc->device();
}
int delayMs = 0;
if (isStateInCall(state)) {
nsecs_t sysTime = systemTime();
for (size_t i = 0; i < mOutputs.size(); i++) {
AudioOutputDescriptor *desc = mOutputs.valueAt(i);
// mute media and sonification strategies and delay device switch by the largest
// latency of any output where either strategy is active.
// This avoid sending the ring tone or music tail into the earpiece or headset.
if ((desc->isStrategyActive(STRATEGY_MEDIA,
SONIFICATION_HEADSET_MUSIC_DELAY,
sysTime) ||
desc->isStrategyActive(STRATEGY_SONIFICATION,
SONIFICATION_HEADSET_MUSIC_DELAY,
sysTime)) &&
(delayMs < (int)desc->mLatency*2)) {
delayMs = desc->mLatency*2;
}
setStrategyMute(STRATEGY_MEDIA, true, mOutputs.keyAt(i));
setStrategyMute(STRATEGY_MEDIA, false, mOutputs.keyAt(i), MUTE_TIME_MS,
getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/));
setStrategyMute(STRATEGY_SONIFICATION, true, mOutputs.keyAt(i));
setStrategyMute(STRATEGY_SONIFICATION, false, mOutputs.keyAt(i), MUTE_TIME_MS,
getDeviceForStrategy(STRATEGY_SONIFICATION, true /*fromCache*/));
}
}
// change routing is necessary
setOutputDevice(mPrimaryOutput, newDevice, force, delayMs);
// if entering in call state, handle special case of active streams
// pertaining to sonification strategy see handleIncallSonification()
if (isStateInCall(state)) {
ALOGV("setPhoneState() in call state management: new state is %d", state);
for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
handleIncallSonification(stream, true, true);
}
}
// Flag that ringtone volume must be limited to music volume until we exit MODE_RINGTONE
if (state == AudioSystem::MODE_RINGTONE &&
isStreamActive(AudioSystem::MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY)) {
mLimitRingtoneVolume = true;
} else {
mLimitRingtoneVolume = false;
}
}
void AudioPolicyManagerBase::setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config)
{
ALOGV("setForceUse() usage %d, config %d, mPhoneState %d", usage, config, mPhoneState);
bool forceVolumeReeval = false;
switch(usage) {
case AudioSystem::FOR_COMMUNICATION:
if (config != AudioSystem::FORCE_SPEAKER && config != AudioSystem::FORCE_BT_SCO &&
config != AudioSystem::FORCE_NONE) {
ALOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config);
return;
}
forceVolumeReeval = true;
mForceUse[usage] = config;
break;
case AudioSystem::FOR_MEDIA:
if (config != AudioSystem::FORCE_HEADPHONES && config != AudioSystem::FORCE_BT_A2DP &&
config != AudioSystem::FORCE_WIRED_ACCESSORY &&
config != AudioSystem::FORCE_ANALOG_DOCK &&
config != AudioSystem::FORCE_DIGITAL_DOCK && config != AudioSystem::FORCE_NONE &&
config != AudioSystem::FORCE_NO_BT_A2DP) {
ALOGW("setForceUse() invalid config %d for FOR_MEDIA", config);
return;
}
mForceUse[usage] = config;
break;
case AudioSystem::FOR_RECORD:
if (config != AudioSystem::FORCE_BT_SCO && config != AudioSystem::FORCE_WIRED_ACCESSORY &&
config != AudioSystem::FORCE_NONE) {
ALOGW("setForceUse() invalid config %d for FOR_RECORD", config);
return;
}
mForceUse[usage] = config;
break;
case AudioSystem::FOR_DOCK:
if (config != AudioSystem::FORCE_NONE && config != AudioSystem::FORCE_BT_CAR_DOCK &&
config != AudioSystem::FORCE_BT_DESK_DOCK &&
config != AudioSystem::FORCE_WIRED_ACCESSORY &&
config != AudioSystem::FORCE_ANALOG_DOCK &&
config != AudioSystem::FORCE_DIGITAL_DOCK) {
ALOGW("setForceUse() invalid config %d for FOR_DOCK", config);
}
forceVolumeReeval = true;
mForceUse[usage] = config;
break;
case AudioSystem::FOR_SYSTEM:
if (config != AudioSystem::FORCE_NONE &&
config != AudioSystem::FORCE_SYSTEM_ENFORCED) {
ALOGW("setForceUse() invalid config %d for FOR_SYSTEM", config);
}
forceVolumeReeval = true;
mForceUse[usage] = config;
break;
default:
ALOGW("setForceUse() invalid usage %d", usage);
break;
}
// check for device and output changes triggered by new force usage
checkA2dpSuspend();
checkOutputForAllStrategies();
updateDevicesAndOutputs();
for (size_t i = 0; i < mOutputs.size(); i++) {
audio_io_handle_t output = mOutputs.keyAt(i);
audio_devices_t newDevice = getNewDevice(output, true /*fromCache*/);
setOutputDevice(output, newDevice, (newDevice != AUDIO_DEVICE_NONE));
if (forceVolumeReeval && (newDevice != AUDIO_DEVICE_NONE)) {
applyStreamVolumes(output, newDevice, 0, true);
}
}
audio_io_handle_t activeInput = getActiveInput();
if (activeInput != 0) {
AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
ALOGV("setForceUse() changing device from %x to %x for input %d",
inputDesc->mDevice, newDevice, activeInput);
inputDesc->mDevice = newDevice;
AudioParameter param = AudioParameter();
param.addInt(String8(AudioParameter::keyRouting), (int)newDevice);
mpClientInterface->setParameters(activeInput, param.toString());
}
}
}
AudioSystem::forced_config AudioPolicyManagerBase::getForceUse(AudioSystem::force_use usage)
{
return mForceUse[usage];
}
void AudioPolicyManagerBase::setSystemProperty(const char* property, const char* value)
{
ALOGV("setSystemProperty() property %s, value %s", property, value);
}
// Find a direct output profile compatible with the parameters passed, even if the input flags do
// not explicitly request a direct output
AudioPolicyManagerBase::IOProfile *AudioPolicyManagerBase::getProfileForDirectOutput(
audio_devices_t device,
uint32_t samplingRate,
audio_format_t format,
audio_channel_mask_t channelMask,
audio_output_flags_t flags)
{
for (size_t i = 0; i < mHwModules.size(); i++) {
if (mHwModules[i]->mHandle == 0) {
continue;
}
for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) {
IOProfile *profile = mHwModules[i]->mOutputProfiles[j];
if (flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) {
if (profile->isCompatibleProfile(device, samplingRate, format,
channelMask,
AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD)) {
if (mAvailableOutputDevices & profile->mSupportedDevices) {
return mHwModules[i]->mOutputProfiles[j];
}
}
} else {
if (profile->isCompatibleProfile(device, samplingRate, format,
channelMask,
AUDIO_OUTPUT_FLAG_DIRECT)) {
if (mAvailableOutputDevices & profile->mSupportedDevices) {
return mHwModules[i]->mOutputProfiles[j];
}
}
}
}
}
return 0;
}
audio_io_handle_t AudioPolicyManagerBase::getOutput(AudioSystem::stream_type stream,
uint32_t samplingRate,
audio_format_t format,
audio_channel_mask_t channelMask,
AudioSystem::output_flags flags,
const audio_offload_info_t *offloadInfo)
{
audio_io_handle_t output = 0;
uint32_t latency = 0;
routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream);
audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/);
ALOGV("getOutput() device %d, stream %d, samplingRate %d, format %x, channelMask %x, flags %x",
device, stream, samplingRate, format, channelMask, flags);
#ifdef AUDIO_POLICY_TEST
if (mCurOutput != 0) {
ALOGV("getOutput() test output mCurOutput %d, samplingRate %d, format %d, channelMask %x, mDirectOutput %d",
mCurOutput, mTestSamplingRate, mTestFormat, mTestChannels, mDirectOutput);
if (mTestOutputs[mCurOutput] == 0) {
ALOGV("getOutput() opening test output");
AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL);
outputDesc->mDevice = mTestDevice;
outputDesc->mSamplingRate = mTestSamplingRate;
outputDesc->mFormat = mTestFormat;
outputDesc->mChannelMask = mTestChannels;
outputDesc->mLatency = mTestLatencyMs;
outputDesc->mFlags = (audio_output_flags_t)(mDirectOutput ? AudioSystem::OUTPUT_FLAG_DIRECT : 0);
outputDesc->mRefCount[stream] = 0;
mTestOutputs[mCurOutput] = mpClientInterface->openOutput(0, &outputDesc->mDevice,
&outputDesc->mSamplingRate,
&outputDesc->mFormat,
&outputDesc->mChannelMask,
&outputDesc->mLatency,
outputDesc->mFlags,
offloadInfo);
if (mTestOutputs[mCurOutput]) {
AudioParameter outputCmd = AudioParameter();
outputCmd.addInt(String8("set_id"),mCurOutput);
mpClientInterface->setParameters(mTestOutputs[mCurOutput],outputCmd.toString());
addOutput(mTestOutputs[mCurOutput], outputDesc);
}
}
return mTestOutputs[mCurOutput];
}
#endif //AUDIO_POLICY_TEST
// open a direct output if required by specified parameters
//force direct flag if offload flag is set: offloading implies a direct output stream
// and all common behaviors are driven by checking only the direct flag
// this should normally be set appropriately in the policy configuration file
if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
flags = (AudioSystem::output_flags)(flags | AUDIO_OUTPUT_FLAG_DIRECT);
}
// Do not allow offloading if one non offloadable effect is enabled. This prevents from
// creating an offloaded track and tearing it down immediately after start when audioflinger
// detects there is an active non offloadable effect.
// FIXME: We should check the audio session here but we do not have it in this context.
// This may prevent offloading in rare situations where effects are left active by apps
// in the background.
IOProfile *profile = NULL;
if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) ||
!isNonOffloadableEffectEnabled()) {
profile = getProfileForDirectOutput(device,
samplingRate,
format,
channelMask,
(audio_output_flags_t)flags);
}
if (profile != NULL) {
AudioOutputDescriptor *outputDesc = NULL;
for (size_t i = 0; i < mOutputs.size(); i++) {
AudioOutputDescriptor *desc = mOutputs.valueAt(i);
if (!desc->isDuplicated() && (profile == desc->mProfile)) {
outputDesc = desc;
// reuse direct output if currently open and configured with same parameters
if ((samplingRate == outputDesc->mSamplingRate) &&
(format == outputDesc->mFormat) &&
(channelMask == outputDesc->mChannelMask)) {
outputDesc->mDirectOpenCount++;
ALOGV("getOutput() reusing direct output %d", mOutputs.keyAt(i));
return mOutputs.keyAt(i);
}
}
}
// close direct output if currently open and configured with different parameters
if (outputDesc != NULL) {
closeOutput(outputDesc->mId);
}
outputDesc = new AudioOutputDescriptor(profile);
outputDesc->mDevice = device;
outputDesc->mSamplingRate = samplingRate;
outputDesc->mFormat = format;
outputDesc->mChannelMask = channelMask;
outputDesc->mLatency = 0;
outputDesc->mFlags =(audio_output_flags_t) (outputDesc->mFlags | flags);
outputDesc->mRefCount[stream] = 0;
outputDesc->mStopTime[stream] = 0;
outputDesc->mDirectOpenCount = 1;
output = mpClientInterface->openOutput(profile->mModule->mHandle,
&outputDesc->mDevice,
&outputDesc->mSamplingRate,
&outputDesc->mFormat,
&outputDesc->mChannelMask,
&outputDesc->mLatency,
outputDesc->mFlags,
offloadInfo);
// only accept an output with the requested parameters
if (output == 0 ||
(samplingRate != 0 && samplingRate != outputDesc->mSamplingRate) ||
(format != AUDIO_FORMAT_DEFAULT && format != outputDesc->mFormat) ||
(channelMask != 0 && channelMask != outputDesc->mChannelMask)) {
ALOGV("getOutput() failed opening direct output: output %d samplingRate %d %d,"
"format %d %d, channelMask %04x %04x", output, samplingRate,
outputDesc->mSamplingRate, format, outputDesc->mFormat, channelMask,
outputDesc->mChannelMask);
if (output != 0) {
mpClientInterface->closeOutput(output);
}
delete outputDesc;
return 0;
}
audio_io_handle_t srcOutput = getOutputForEffect();
addOutput(output, outputDesc);
audio_io_handle_t dstOutput = getOutputForEffect();
if (dstOutput == output) {
mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, srcOutput, dstOutput);
}
mPreviousOutputs = mOutputs;
ALOGV("getOutput() returns new direct output %d", output);
return output;
}
// ignoring channel mask due to downmix capability in mixer
// open a non direct output
// for non direct outputs, only PCM is supported
if (audio_is_linear_pcm(format)) {
// get which output is suitable for the specified stream. The actual
// routing change will happen when startOutput() will be called
SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(device, mOutputs);
output = selectOutput(outputs, flags);
}
ALOGW_IF((output == 0), "getOutput() could not find output for stream %d, samplingRate %d,"
"format %d, channels %x, flags %x", stream, samplingRate, format, channelMask, flags);
ALOGV("getOutput() returns output %d", output);
return output;
}
audio_io_handle_t AudioPolicyManagerBase::selectOutput(const SortedVector<audio_io_handle_t>& outputs,
AudioSystem::output_flags flags)
{
// select one output among several that provide a path to a particular device or set of
// devices (the list was previously build by getOutputsForDevice()).
// The priority is as follows:
// 1: the output with the highest number of requested policy flags
// 2: the primary output
// 3: the first output in the list
if (outputs.size() == 0) {
return 0;
}
if (outputs.size() == 1) {
return outputs[0];
}
int maxCommonFlags = 0;
audio_io_handle_t outputFlags = 0;
audio_io_handle_t outputPrimary = 0;
for (size_t i = 0; i < outputs.size(); i++) {
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(outputs[i]);
if (!outputDesc->isDuplicated()) {
int commonFlags = (int)AudioSystem::popCount(outputDesc->mProfile->mFlags & flags);
if (commonFlags > maxCommonFlags) {
outputFlags = outputs[i];
maxCommonFlags = commonFlags;
ALOGV("selectOutput() commonFlags for output %d, %04x", outputs[i], commonFlags);
}
if (outputDesc->mProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) {
outputPrimary = outputs[i];
}
}
}
if (outputFlags != 0) {
return outputFlags;
}
if (outputPrimary != 0) {
return outputPrimary;
}
return outputs[0];
}
status_t AudioPolicyManagerBase::startOutput(audio_io_handle_t output,
AudioSystem::stream_type stream,
audio_session_t session)
{
ALOGV("startOutput() output %d, stream %d, session %d", output, stream, session);
ssize_t index = mOutputs.indexOfKey(output);
if (index < 0) {
ALOGW("startOutput() unknown output %d", output);
return BAD_VALUE;
}
AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
// increment usage count for this stream on the requested output:
// NOTE that the usage count is the same for duplicated output and hardware output which is
// necessary for a correct control of hardware output routing by startOutput() and stopOutput()
outputDesc->changeRefCount(stream, 1);
if (outputDesc->mRefCount[stream] == 1) {
audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/);
routing_strategy strategy = getStrategy(stream);
bool shouldWait = (strategy == STRATEGY_SONIFICATION) ||
(strategy == STRATEGY_SONIFICATION_RESPECTFUL);
uint32_t waitMs = 0;
bool force = false;
for (size_t i = 0; i < mOutputs.size(); i++) {
AudioOutputDescriptor *desc = mOutputs.valueAt(i);
if (desc != outputDesc) {
// force a device change if any other output is managed by the same hw
// module and has a current device selection that differs from selected device.
// In this case, the audio HAL must receive the new device selection so that it can
// change the device currently selected by the other active output.
if (outputDesc->sharesHwModuleWith(desc) &&
desc->device() != newDevice) {
force = true;
}
// wait for audio on other active outputs to be presented when starting
// a notification so that audio focus effect can propagate.
uint32_t latency = desc->latency();
if (shouldWait && desc->isActive(latency * 2) && (waitMs < latency)) {
waitMs = latency;
}
}
}
uint32_t muteWaitMs = setOutputDevice(output, newDevice, force);
// handle special case for sonification while in call
if (isInCall()) {
handleIncallSonification(stream, true, false);
}
// apply volume rules for current stream and device if necessary
checkAndSetVolume(stream,
mStreams[stream].getVolumeIndex(newDevice),
output,
newDevice);
// update the outputs if starting an output with a stream that can affect notification
// routing
handleNotificationRoutingForStream(stream);
if (waitMs > muteWaitMs) {
usleep((waitMs - muteWaitMs) * 2 * 1000);
}
}
return NO_ERROR;
}
status_t AudioPolicyManagerBase::stopOutput(audio_io_handle_t output,
AudioSystem::stream_type stream,
audio_session_t session)
{
ALOGV("stopOutput() output %d, stream %d, session %d", output, stream, session);
ssize_t index = mOutputs.indexOfKey(output);
if (index < 0) {
ALOGW("stopOutput() unknown output %d", output);
return BAD_VALUE;
}
AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
// handle special case for sonification while in call
if (isInCall()) {
handleIncallSonification(stream, false, false);
}
if (outputDesc->mRefCount[stream] > 0) {
// decrement usage count of this stream on the output
outputDesc->changeRefCount(stream, -1);
// store time at which the stream was stopped - see isStreamActive()
if (outputDesc->mRefCount[stream] == 0) {
outputDesc->mStopTime[stream] = systemTime();
audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/);
// delay the device switch by twice the latency because stopOutput() is executed when
// the track stop() command is received and at that time the audio track buffer can
// still contain data that needs to be drained. The latency only covers the audio HAL
// and kernel buffers. Also the latency does not always include additional delay in the
// audio path (audio DSP, CODEC ...)
setOutputDevice(output, newDevice, false, outputDesc->mLatency*2);
// force restoring the device selection on other active outputs if it differs from the
// one being selected for this output
for (size_t i = 0; i < mOutputs.size(); i++) {
audio_io_handle_t curOutput = mOutputs.keyAt(i);
AudioOutputDescriptor *desc = mOutputs.valueAt(i);
if (curOutput != output &&
desc->isActive() &&
outputDesc->sharesHwModuleWith(desc) &&
(newDevice != desc->device())) {
setOutputDevice(curOutput,
getNewDevice(curOutput, false /*fromCache*/),
true,
outputDesc->mLatency*2);
}
}
// update the outputs if stopping one with a stream that can affect notification routing
handleNotificationRoutingForStream(stream);
}
return NO_ERROR;
} else {
ALOGW("stopOutput() refcount is already 0 for output %d", output);
return INVALID_OPERATION;
}
}
void AudioPolicyManagerBase::releaseOutput(audio_io_handle_t output)
{
ALOGV("releaseOutput() %d", output);
ssize_t index = mOutputs.indexOfKey(output);
if (index < 0) {
ALOGW("releaseOutput() releasing unknown output %d", output);
return;
}
#ifdef AUDIO_POLICY_TEST
int testIndex = testOutputIndex(output);
if (testIndex != 0) {
AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
if (outputDesc->isActive()) {
mpClientInterface->closeOutput(output);
delete mOutputs.valueAt(index);
mOutputs.removeItem(output);
mTestOutputs[testIndex] = 0;
}
return;
}
#endif //AUDIO_POLICY_TEST
AudioOutputDescriptor *desc = mOutputs.valueAt(index);
if (desc->mFlags & AudioSystem::OUTPUT_FLAG_DIRECT) {
if (desc->mDirectOpenCount <= 0) {
ALOGW("releaseOutput() invalid open count %d for output %d",
desc->mDirectOpenCount, output);
return;
}
if (--desc->mDirectOpenCount == 0) {
closeOutput(output);
// If effects where present on the output, audioflinger moved them to the primary
// output by default: move them back to the appropriate output.
audio_io_handle_t dstOutput = getOutputForEffect();
if (dstOutput != mPrimaryOutput) {
mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, mPrimaryOutput, dstOutput);
}
}
}
}
audio_io_handle_t AudioPolicyManagerBase::getInput(int inputSource,
uint32_t samplingRate,
audio_format_t format,
audio_channel_mask_t channelMask,
AudioSystem::audio_in_acoustics acoustics)
{
audio_io_handle_t input = 0;
audio_devices_t device = getDeviceForInputSource(inputSource);
ALOGV("getInput() inputSource %d, samplingRate %d, format %d, channelMask %x, acoustics %x",
inputSource, samplingRate, format, channelMask, acoustics);
if (device == AUDIO_DEVICE_NONE) {
ALOGW("getInput() could not find device for inputSource %d", inputSource);
return 0;
}
// adapt channel selection to input source
switch(inputSource) {
case AUDIO_SOURCE_VOICE_UPLINK:
channelMask = AUDIO_CHANNEL_IN_VOICE_UPLINK;
break;
case AUDIO_SOURCE_VOICE_DOWNLINK:
channelMask = AUDIO_CHANNEL_IN_VOICE_DNLINK;
break;
case AUDIO_SOURCE_VOICE_CALL:
channelMask = AUDIO_CHANNEL_IN_VOICE_UPLINK | AUDIO_CHANNEL_IN_VOICE_DNLINK;
break;
default:
break;
}
IOProfile *profile = getInputProfile(device,
samplingRate,
format,
channelMask);
if (profile == NULL) {
ALOGW("getInput() could not find profile for device 0x%X, samplingRate %d, format %d, "
"channelMask 0x%X",
device, samplingRate, format, channelMask);
return 0;
}
if (profile->mModule->mHandle == 0) {
ALOGE("getInput(): HW module %s not opened", profile->mModule->mName);
return 0;
}
AudioInputDescriptor *inputDesc = new AudioInputDescriptor(profile);
inputDesc->mInputSource = inputSource;
inputDesc->mDevice = device;
inputDesc->mSamplingRate = samplingRate;
inputDesc->mFormat = format;
inputDesc->mChannelMask = channelMask;
inputDesc->mRefCount = 0;
input = mpClientInterface->openInput(profile->mModule->mHandle,
&inputDesc->mDevice,
&inputDesc->mSamplingRate,
&inputDesc->mFormat,
&inputDesc->mChannelMask);
// only accept input with the exact requested set of parameters
if (input == 0 ||
(samplingRate != inputDesc->mSamplingRate) ||
(format != inputDesc->mFormat) ||
(channelMask != inputDesc->mChannelMask)) {
ALOGI("getInput() failed opening input: samplingRate %d, format %d, channelMask 0x%X",
samplingRate, format, channelMask);
if (input != 0) {
mpClientInterface->closeInput(input);
}
delete inputDesc;
return 0;
}
addInput(input, inputDesc);
return input;
}
status_t AudioPolicyManagerBase::startInput(audio_io_handle_t input)
{
ALOGV("startInput() input %d", input);
ssize_t index = mInputs.indexOfKey(input);
if (index < 0) {
ALOGW("startInput() unknown input %d", input);
return BAD_VALUE;
}
AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
#ifdef AUDIO_POLICY_TEST
if (mTestInput == 0)
#endif //AUDIO_POLICY_TEST
{
// refuse 2 active AudioRecord clients at the same time except if the active input
// uses AUDIO_SOURCE_HOTWORD in which case it is closed.
audio_io_handle_t activeInput = getActiveInput();
if (!isVirtualInputDevice(inputDesc->mDevice) && activeInput != 0) {
AudioInputDescriptor *activeDesc = mInputs.valueFor(activeInput);
if (activeDesc->mInputSource == AUDIO_SOURCE_HOTWORD) {
ALOGW("startInput() preempting already started low-priority input %d", activeInput);
stopInput(activeInput);
releaseInput(activeInput);
} else {
ALOGW("startInput() input %d failed: other input already started", input);
return INVALID_OPERATION;
}
}
}
audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
inputDesc->mDevice = newDevice;
}
// automatically enable the remote submix output when input is started
if (audio_is_remote_submix_device(inputDesc->mDevice)) {
setDeviceConnectionState(AUDIO_DEVICE_OUT_REMOTE_SUBMIX,
AudioSystem::DEVICE_STATE_AVAILABLE, AUDIO_REMOTE_SUBMIX_DEVICE_ADDRESS);
}
AudioParameter param = AudioParameter();
param.addInt(String8(AudioParameter::keyRouting), (int)inputDesc->mDevice);
int aliasSource = (inputDesc->mInputSource == AUDIO_SOURCE_HOTWORD) ?
AUDIO_SOURCE_VOICE_RECOGNITION : inputDesc->mInputSource;
param.addInt(String8(AudioParameter::keyInputSource), aliasSource);
ALOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource);
mpClientInterface->setParameters(input, param.toString());
inputDesc->mRefCount = 1;
return NO_ERROR;
}
status_t AudioPolicyManagerBase::stopInput(audio_io_handle_t input)
{
ALOGV("stopInput() input %d", input);
ssize_t index = mInputs.indexOfKey(input);
if (index < 0) {
ALOGW("stopInput() unknown input %d", input);
return BAD_VALUE;
}
AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
if (inputDesc->mRefCount == 0) {
ALOGW("stopInput() input %d already stopped", input);
return INVALID_OPERATION;
} else {
// automatically disable the remote submix output when input is stopped
if (audio_is_remote_submix_device(inputDesc->mDevice)) {
setDeviceConnectionState(AUDIO_DEVICE_OUT_REMOTE_SUBMIX,
AudioSystem::DEVICE_STATE_UNAVAILABLE, AUDIO_REMOTE_SUBMIX_DEVICE_ADDRESS);
}
AudioParameter param = AudioParameter();
param.addInt(String8(AudioParameter::keyRouting), 0);
mpClientInterface->setParameters(input, param.toString());
inputDesc->mRefCount = 0;
return NO_ERROR;
}
}
void AudioPolicyManagerBase::releaseInput(audio_io_handle_t input)
{
ALOGV("releaseInput() %d", input);
ssize_t index = mInputs.indexOfKey(input);
if (index < 0) {
ALOGW("releaseInput() releasing unknown input %d", input);
return;
}
mpClientInterface->closeInput(input);
delete mInputs.valueAt(index);
mInputs.removeItem(input);
ALOGV("releaseInput() exit");
}
void AudioPolicyManagerBase::closeAllInputs() {
for(size_t input_index = 0; input_index < mInputs.size(); input_index++) {
mpClientInterface->closeInput(mInputs.keyAt(input_index));
}
mInputs.clear();
}
void AudioPolicyManagerBase::initStreamVolume(AudioSystem::stream_type stream,
int indexMin,
int indexMax)
{
ALOGV("initStreamVolume() stream %d, min %d, max %d", stream , indexMin, indexMax);
if (indexMin < 0 || indexMin >= indexMax) {
ALOGW("initStreamVolume() invalid index limits for stream %d, min %d, max %d", stream , indexMin, indexMax);
return;
}
mStreams[stream].mIndexMin = indexMin;
mStreams[stream].mIndexMax = indexMax;
}
status_t AudioPolicyManagerBase::setStreamVolumeIndex(AudioSystem::stream_type stream,
int index,
audio_devices_t device)
{
if ((index < mStreams[stream].mIndexMin) || (index > mStreams[stream].mIndexMax)) {
return BAD_VALUE;
}
if (!audio_is_output_device(device)) {
return BAD_VALUE;
}
// Force max volume if stream cannot be muted
if (!mStreams[stream].mCanBeMuted) index = mStreams[stream].mIndexMax;
ALOGV("setStreamVolumeIndex() stream %d, device %04x, index %d",
stream, device, index);
// if device is AUDIO_DEVICE_OUT_DEFAULT set default value and
// clear all device specific values
if (device == AUDIO_DEVICE_OUT_DEFAULT) {
mStreams[stream].mIndexCur.clear();
}
mStreams[stream].mIndexCur.add(device, index);
// compute and apply stream volume on all outputs according to connected device
status_t status = NO_ERROR;
for (size_t i = 0; i < mOutputs.size(); i++) {
audio_devices_t curDevice =
getDeviceForVolume(mOutputs.valueAt(i)->device());
if ((device == AUDIO_DEVICE_OUT_DEFAULT) || (device == curDevice)) {
status_t volStatus = checkAndSetVolume(stream, index, mOutputs.keyAt(i), curDevice);
if (volStatus != NO_ERROR) {
status = volStatus;
}
}
}
return status;
}
status_t AudioPolicyManagerBase::getStreamVolumeIndex(AudioSystem::stream_type stream,
int *index,
audio_devices_t device)
{
if (index == NULL) {
return BAD_VALUE;
}
if (!audio_is_output_device(device)) {
return BAD_VALUE;
}
// if device is AUDIO_DEVICE_OUT_DEFAULT, return volume for device corresponding to
// the strategy the stream belongs to.
if (device == AUDIO_DEVICE_OUT_DEFAULT) {
device = getDeviceForStrategy(getStrategy(stream), true /*fromCache*/);
}
device = getDeviceForVolume(device);
*index = mStreams[stream].getVolumeIndex(device);
ALOGV("getStreamVolumeIndex() stream %d device %08x index %d", stream, device, *index);
return NO_ERROR;
}
audio_io_handle_t AudioPolicyManagerBase::selectOutputForEffects(
const SortedVector<audio_io_handle_t>& outputs)
{
// select one output among several suitable for global effects.
// The priority is as follows:
// 1: An offloaded output. If the effect ends up not being offloadable,
// AudioFlinger will invalidate the track and the offloaded output
// will be closed causing the effect to be moved to a PCM output.
// 2: A deep buffer output
// 3: the first output in the list
if (outputs.size() == 0) {
return 0;
}
audio_io_handle_t outputOffloaded = 0;
audio_io_handle_t outputDeepBuffer = 0;
for (size_t i = 0; i < outputs.size(); i++) {
AudioOutputDescriptor *desc = mOutputs.valueFor(outputs[i]);
ALOGV("selectOutputForEffects outputs[%zu] flags %x", i, desc->mFlags);
if ((desc->mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
outputOffloaded = outputs[i];
}
if ((desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) != 0) {
outputDeepBuffer = outputs[i];
}
}
ALOGV("selectOutputForEffects outputOffloaded %d outputDeepBuffer %d",
outputOffloaded, outputDeepBuffer);
if (outputOffloaded != 0) {
return outputOffloaded;
}
if (outputDeepBuffer != 0) {
return outputDeepBuffer;
}
return outputs[0];
}
audio_io_handle_t AudioPolicyManagerBase::getOutputForEffect(const effect_descriptor_t *desc)
{
// apply simple rule where global effects are attached to the same output as MUSIC streams
routing_strategy strategy = getStrategy(AudioSystem::MUSIC);
audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/);
SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(device, mOutputs);
audio_io_handle_t output = selectOutputForEffects(dstOutputs);
ALOGV("getOutputForEffect() got output %d for fx %s flags %x",
output, (desc == NULL) ? "unspecified" : desc->name, (desc == NULL) ? 0 : desc->flags);
return output;
}
status_t AudioPolicyManagerBase::registerEffect(const effect_descriptor_t *desc,
audio_io_handle_t io,
uint32_t strategy,
audio_session_t session,
int id)
{
ssize_t index = mOutputs.indexOfKey(io);
if (index < 0) {
index = mInputs.indexOfKey(io);
if (index < 0) {
ALOGW("registerEffect() unknown io %d", io);
return INVALID_OPERATION;
}
}
if (mTotalEffectsMemory + desc->memoryUsage > getMaxEffectsMemory()) {
ALOGW("registerEffect() memory limit exceeded for Fx %s, Memory %d KB",
desc->name, desc->memoryUsage);
return INVALID_OPERATION;
}
mTotalEffectsMemory += desc->memoryUsage;
ALOGV("registerEffect() effect %s, io %d, strategy %d session %d id %d",
desc->name, io, strategy, session, id);
ALOGV("registerEffect() memory %d, total memory %d", desc->memoryUsage, mTotalEffectsMemory);
EffectDescriptor *pDesc = new EffectDescriptor();
memcpy (&pDesc->mDesc, desc, sizeof(effect_descriptor_t));
pDesc->mIo = io;
pDesc->mStrategy = (routing_strategy)strategy;
pDesc->mSession = session;
pDesc->mEnabled = false;
mEffects.add(id, pDesc);
return NO_ERROR;
}
status_t AudioPolicyManagerBase::unregisterEffect(int id)
{
ssize_t index = mEffects.indexOfKey(id);
if (index < 0) {
ALOGW("unregisterEffect() unknown effect ID %d", id);
return INVALID_OPERATION;
}
EffectDescriptor *pDesc = mEffects.valueAt(index);
setEffectEnabled(pDesc, false);
if (mTotalEffectsMemory < pDesc->mDesc.memoryUsage) {
ALOGW("unregisterEffect() memory %d too big for total %d",
pDesc->mDesc.memoryUsage, mTotalEffectsMemory);
pDesc->mDesc.memoryUsage = mTotalEffectsMemory;
}
mTotalEffectsMemory -= pDesc->mDesc.memoryUsage;
ALOGV("unregisterEffect() effect %s, ID %d, memory %d total memory %d",
pDesc->mDesc.name, id, pDesc->mDesc.memoryUsage, mTotalEffectsMemory);
mEffects.removeItem(id);
delete pDesc;
return NO_ERROR;
}
status_t AudioPolicyManagerBase::setEffectEnabled(int id, bool enabled)
{
ssize_t index = mEffects.indexOfKey(id);
if (index < 0) {
ALOGW("unregisterEffect() unknown effect ID %d", id);
return INVALID_OPERATION;
}
return setEffectEnabled(mEffects.valueAt(index), enabled);
}
status_t AudioPolicyManagerBase::setEffectEnabled(EffectDescriptor *pDesc, bool enabled)
{
if (enabled == pDesc->mEnabled) {
ALOGV("setEffectEnabled(%s) effect already %s",
enabled?"true":"false", enabled?"enabled":"disabled");
return INVALID_OPERATION;
}
if (enabled) {
if (mTotalEffectsCpuLoad + pDesc->mDesc.cpuLoad > getMaxEffectsCpuLoad()) {
ALOGW("setEffectEnabled(true) CPU Load limit exceeded for Fx %s, CPU %f MIPS",
pDesc->mDesc.name, (float)pDesc->mDesc.cpuLoad/10);
return INVALID_OPERATION;
}
mTotalEffectsCpuLoad += pDesc->mDesc.cpuLoad;
ALOGV("setEffectEnabled(true) total CPU %d", mTotalEffectsCpuLoad);
} else {
if (mTotalEffectsCpuLoad < pDesc->mDesc.cpuLoad) {
ALOGW("setEffectEnabled(false) CPU load %d too high for total %d",
pDesc->mDesc.cpuLoad, mTotalEffectsCpuLoad);
pDesc->mDesc.cpuLoad = mTotalEffectsCpuLoad;
}
mTotalEffectsCpuLoad -= pDesc->mDesc.cpuLoad;
ALOGV("setEffectEnabled(false) total CPU %d", mTotalEffectsCpuLoad);
}
pDesc->mEnabled = enabled;
return NO_ERROR;
}
bool AudioPolicyManagerBase::isNonOffloadableEffectEnabled()
{
for (size_t i = 0; i < mEffects.size(); i++) {
const EffectDescriptor * const pDesc = mEffects.valueAt(i);
if (pDesc->mEnabled && (pDesc->mStrategy == STRATEGY_MEDIA) &&
((pDesc->mDesc.flags & EFFECT_FLAG_OFFLOAD_SUPPORTED) == 0)) {
ALOGV("isNonOffloadableEffectEnabled() non offloadable effect %s enabled on session %d",
pDesc->mDesc.name, pDesc->mSession);
return true;
}
}
return false;
}
bool AudioPolicyManagerBase::isStreamActive(int stream, uint32_t inPastMs) const
{
nsecs_t sysTime = systemTime();
for (size_t i = 0; i < mOutputs.size(); i++) {
const AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
if (outputDesc->isStreamActive((AudioSystem::stream_type)stream, inPastMs, sysTime)) {
return true;
}
}
return false;
}
bool AudioPolicyManagerBase::isStreamActiveRemotely(int stream, uint32_t inPastMs) const
{
nsecs_t sysTime = systemTime();
for (size_t i = 0; i < mOutputs.size(); i++) {
const AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
if (((outputDesc->device() & APM_AUDIO_OUT_DEVICE_REMOTE_ALL) != 0) &&
outputDesc->isStreamActive((AudioSystem::stream_type)stream, inPastMs, sysTime)) {
return true;
}
}
return false;
}
bool AudioPolicyManagerBase::isSourceActive(audio_source_t source) const
{
for (size_t i = 0; i < mInputs.size(); i++) {
const AudioInputDescriptor * inputDescriptor = mInputs.valueAt(i);
if ((inputDescriptor->mInputSource == (int)source ||
(source == (audio_source_t)AUDIO_SOURCE_VOICE_RECOGNITION &&
inputDescriptor->mInputSource == AUDIO_SOURCE_HOTWORD))
&& (inputDescriptor->mRefCount > 0)) {
return true;
}
}
return false;
}
status_t AudioPolicyManagerBase::dump(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, "\nAudioPolicyManager Dump: %p\n", this);
result.append(buffer);
snprintf(buffer, SIZE, " Primary Output: %d\n", mPrimaryOutput);
result.append(buffer);
snprintf(buffer, SIZE, " A2DP device address: %s\n", mA2dpDeviceAddress.string());
result.append(buffer);
snprintf(buffer, SIZE, " SCO device address: %s\n", mScoDeviceAddress.string());
result.append(buffer);
snprintf(buffer, SIZE, " USB audio ALSA %s\n", mUsbOutCardAndDevice.string());
result.append(buffer);
snprintf(buffer, SIZE, " Output devices: %08x\n", mAvailableOutputDevices);
result.append(buffer);
snprintf(buffer, SIZE, " Input devices: %08x\n", mAvailableInputDevices);
result.append(buffer);
snprintf(buffer, SIZE, " Phone state: %d\n", mPhoneState);
result.append(buffer);
snprintf(buffer, SIZE, " Force use for communications %d\n", mForceUse[AudioSystem::FOR_COMMUNICATION]);
result.append(buffer);
snprintf(buffer, SIZE, " Force use for media %d\n", mForceUse[AudioSystem::FOR_MEDIA]);
result.append(buffer);
snprintf(buffer, SIZE, " Force use for record %d\n", mForceUse[AudioSystem::FOR_RECORD]);
result.append(buffer);
snprintf(buffer, SIZE, " Force use for dock %d\n", mForceUse[AudioSystem::FOR_DOCK]);
result.append(buffer);
snprintf(buffer, SIZE, " Force use for system %d\n", mForceUse[AudioSystem::FOR_SYSTEM]);
result.append(buffer);
write(fd, result.string(), result.size());
snprintf(buffer, SIZE, "\nHW Modules dump:\n");
write(fd, buffer, strlen(buffer));
for (size_t i = 0; i < mHwModules.size(); i++) {
snprintf(buffer, SIZE, "- HW Module %zu:\n", i + 1);
write(fd, buffer, strlen(buffer));
mHwModules[i]->dump(fd);
}
snprintf(buffer, SIZE, "\nOutputs dump:\n");
write(fd, buffer, strlen(buffer));
for (size_t i = 0; i < mOutputs.size(); i++) {
snprintf(buffer, SIZE, "- Output %d dump:\n", mOutputs.keyAt(i));
write(fd, buffer, strlen(buffer));
mOutputs.valueAt(i)->dump(fd);
}
snprintf(buffer, SIZE, "\nInputs dump:\n");
write(fd, buffer, strlen(buffer));
for (size_t i = 0; i < mInputs.size(); i++) {
snprintf(buffer, SIZE, "- Input %d dump:\n", mInputs.keyAt(i));
write(fd, buffer, strlen(buffer));
mInputs.valueAt(i)->dump(fd);
}
snprintf(buffer, SIZE, "\nStreams dump:\n");
write(fd, buffer, strlen(buffer));
snprintf(buffer, SIZE,
" Stream Can be muted Index Min Index Max Index Cur [device : index]...\n");
write(fd, buffer, strlen(buffer));
for (size_t i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
snprintf(buffer, SIZE, " %02zu ", i);
write(fd, buffer, strlen(buffer));
mStreams[i].dump(fd);
}
snprintf(buffer, SIZE, "\nTotal Effects CPU: %f MIPS, Total Effects memory: %d KB\n",
(float)mTotalEffectsCpuLoad/10, mTotalEffectsMemory);
write(fd, buffer, strlen(buffer));
snprintf(buffer, SIZE, "Registered effects:\n");
write(fd, buffer, strlen(buffer));
for (size_t i = 0; i < mEffects.size(); i++) {
snprintf(buffer, SIZE, "- Effect %d dump:\n", mEffects.keyAt(i));
write(fd, buffer, strlen(buffer));
mEffects.valueAt(i)->dump(fd);
}
return NO_ERROR;
}
// This function checks for the parameters which can be offloaded.
// This can be enhanced depending on the capability of the DSP and policy
// of the system.
bool AudioPolicyManagerBase::isOffloadSupported(const audio_offload_info_t& offloadInfo)
{
ALOGV("isOffloadSupported: SR=%u, CM=0x%x, Format=0x%x, StreamType=%d,"
" BitRate=%u, duration=%" PRId64 " us, has_video=%d",
offloadInfo.sample_rate, offloadInfo.channel_mask,
offloadInfo.format,
offloadInfo.stream_type, offloadInfo.bit_rate, offloadInfo.duration_us,
offloadInfo.has_video);
// Check if offload has been disabled
char propValue[PROPERTY_VALUE_MAX];
if (property_get("audio.offload.disable", propValue, "0")) {
if (atoi(propValue) != 0) {
ALOGV("offload disabled by audio.offload.disable=%s", propValue );
return false;
}
}
// Check if stream type is music, then only allow offload as of now.
if (offloadInfo.stream_type != AUDIO_STREAM_MUSIC)
{
ALOGV("isOffloadSupported: stream_type != MUSIC, returning false");
return false;
}
//TODO: enable audio offloading with video when ready
if (offloadInfo.has_video)
{
ALOGV("isOffloadSupported: has_video == true, returning false");
return false;
}
//If duration is less than minimum value defined in property, return false
if (property_get("audio.offload.min.duration.secs", propValue, NULL)) {
if (offloadInfo.duration_us < (atoi(propValue) * 1000000 )) {
ALOGV("Offload denied by duration < audio.offload.min.duration.secs(=%s)", propValue);
return false;
}
} else if (offloadInfo.duration_us < OFFLOAD_DEFAULT_MIN_DURATION_SECS * 1000000) {
ALOGV("Offload denied by duration < default min(=%u)", OFFLOAD_DEFAULT_MIN_DURATION_SECS);
return false;
}
// Do not allow offloading if one non offloadable effect is enabled. This prevents from
// creating an offloaded track and tearing it down immediately after start when audioflinger
// detects there is an active non offloadable effect.
// FIXME: We should check the audio session here but we do not have it in this context.
// This may prevent offloading in rare situations where effects are left active by apps
// in the background.
if (isNonOffloadableEffectEnabled()) {
return false;
}
// See if there is a profile to support this.
// AUDIO_DEVICE_NONE
IOProfile *profile = getProfileForDirectOutput(AUDIO_DEVICE_NONE /*ignore device */,
offloadInfo.sample_rate,
offloadInfo.format,
offloadInfo.channel_mask,
AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD);
ALOGV("isOffloadSupported() profile %sfound", profile != NULL ? "" : "NOT ");
return (profile != NULL);
}
// ----------------------------------------------------------------------------
// AudioPolicyManagerBase
// ----------------------------------------------------------------------------
AudioPolicyManagerBase::AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface)
:
#ifdef AUDIO_POLICY_TEST
Thread(false),
#endif //AUDIO_POLICY_TEST
mPrimaryOutput((audio_io_handle_t)0),
mAvailableOutputDevices(AUDIO_DEVICE_NONE),
mPhoneState(AudioSystem::MODE_NORMAL),
mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f),
mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0),
mA2dpSuspended(false), mHasA2dp(false), mHasUsb(false), mHasRemoteSubmix(false),
mSpeakerDrcEnabled(false)
{
mpClientInterface = clientInterface;
for (int i = 0; i < AudioSystem::NUM_FORCE_USE; i++) {
mForceUse[i] = AudioSystem::FORCE_NONE;
}
mA2dpDeviceAddress = String8("");
mScoDeviceAddress = String8("");
mUsbOutCardAndDevice = String8("");
if (loadAudioPolicyConfig(AUDIO_POLICY_VENDOR_CONFIG_FILE) != NO_ERROR) {
if (loadAudioPolicyConfig(AUDIO_POLICY_CONFIG_FILE) != NO_ERROR) {
ALOGE("could not load audio policy configuration file, setting defaults");
defaultAudioPolicyConfig();
}
}
// must be done after reading the policy
initializeVolumeCurves();
// open all output streams needed to access attached devices
for (size_t i = 0; i < mHwModules.size(); i++) {
mHwModules[i]->mHandle = mpClientInterface->loadHwModule(mHwModules[i]->mName);
if (mHwModules[i]->mHandle == 0) {
ALOGW("could not open HW module %s", mHwModules[i]->mName);
continue;
}
// open all output streams needed to access attached devices
// except for direct output streams that are only opened when they are actually
// required by an app.
for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
{
const IOProfile *outProfile = mHwModules[i]->mOutputProfiles[j];
if ((outProfile->mSupportedDevices & mAttachedOutputDevices) &&
((outProfile->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) == 0)) {
AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(outProfile);
outputDesc->mDevice = (audio_devices_t)(mDefaultOutputDevice &
outProfile->mSupportedDevices);
audio_io_handle_t output = mpClientInterface->openOutput(
outProfile->mModule->mHandle,
&outputDesc->mDevice,
&outputDesc->mSamplingRate,
&outputDesc->mFormat,
&outputDesc->mChannelMask,
&outputDesc->mLatency,
outputDesc->mFlags);
if (output == 0) {
delete outputDesc;
} else {
mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices |
(outProfile->mSupportedDevices & mAttachedOutputDevices));
if (mPrimaryOutput == 0 &&
outProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) {
mPrimaryOutput = output;
}
addOutput(output, outputDesc);
setOutputDevice(output,
(audio_devices_t)(mDefaultOutputDevice &
outProfile->mSupportedDevices),
true);
}
}
}
}
ALOGE_IF((mAttachedOutputDevices & ~mAvailableOutputDevices),
"Not output found for attached devices %08x",
(mAttachedOutputDevices & ~mAvailableOutputDevices));
ALOGE_IF((mPrimaryOutput == 0), "Failed to open primary output");
updateDevicesAndOutputs();
#ifdef AUDIO_POLICY_TEST
if (mPrimaryOutput != 0) {
AudioParameter outputCmd = AudioParameter();
outputCmd.addInt(String8("set_id"), 0);
mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString());
mTestDevice = AUDIO_DEVICE_OUT_SPEAKER;
mTestSamplingRate = 44100;
mTestFormat = AudioSystem::PCM_16_BIT;
mTestChannels = AudioSystem::CHANNEL_OUT_STEREO;
mTestLatencyMs = 0;
mCurOutput = 0;
mDirectOutput = false;
for (int i = 0; i < NUM_TEST_OUTPUTS; i++) {
mTestOutputs[i] = 0;
}
const size_t SIZE = 256;
char buffer[SIZE];
snprintf(buffer, SIZE, "AudioPolicyManagerTest");
run(buffer, ANDROID_PRIORITY_AUDIO);
}
#endif //AUDIO_POLICY_TEST
}
AudioPolicyManagerBase::~AudioPolicyManagerBase()
{
#ifdef AUDIO_POLICY_TEST
exit();
#endif //AUDIO_POLICY_TEST
for (size_t i = 0; i < mOutputs.size(); i++) {
mpClientInterface->closeOutput(mOutputs.keyAt(i));
delete mOutputs.valueAt(i);
}
for (size_t i = 0; i < mInputs.size(); i++) {
mpClientInterface->closeInput(mInputs.keyAt(i));
delete mInputs.valueAt(i);
}
for (size_t i = 0; i < mHwModules.size(); i++) {
delete mHwModules[i];
}
}
status_t AudioPolicyManagerBase::initCheck()
{
return (mPrimaryOutput == 0) ? NO_INIT : NO_ERROR;
}
#ifdef AUDIO_POLICY_TEST
bool AudioPolicyManagerBase::threadLoop()
{
ALOGV("entering threadLoop()");
while (!exitPending())
{
String8 command;
int valueInt;
String8 value;
Mutex::Autolock _l(mLock);
mWaitWorkCV.waitRelative(mLock, milliseconds(50));
command = mpClientInterface->getParameters(0, String8("test_cmd_policy"));
AudioParameter param = AudioParameter(command);
if (param.getInt(String8("test_cmd_policy"), valueInt) == NO_ERROR &&
valueInt != 0) {
ALOGV("Test command %s received", command.string());
String8 target;
if (param.get(String8("target"), target) != NO_ERROR) {
target = "Manager";
}
if (param.getInt(String8("test_cmd_policy_output"), valueInt) == NO_ERROR) {
param.remove(String8("test_cmd_policy_output"));
mCurOutput = valueInt;
}
if (param.get(String8("test_cmd_policy_direct"), value) == NO_ERROR) {
param.remove(String8("test_cmd_policy_direct"));
if (value == "false") {
mDirectOutput = false;
} else if (value == "true") {
mDirectOutput = true;
}
}
if (param.getInt(String8("test_cmd_policy_input"), valueInt) == NO_ERROR) {
param.remove(String8("test_cmd_policy_input"));
mTestInput = valueInt;
}
if (param.get(String8("test_cmd_policy_format"), value) == NO_ERROR) {
param.remove(String8("test_cmd_policy_format"));
int format = AudioSystem::INVALID_FORMAT;
if (value == "PCM 16 bits") {
format = AudioSystem::PCM_16_BIT;
} else if (value == "PCM 8 bits") {
format = AudioSystem::PCM_8_BIT;
} else if (value == "Compressed MP3") {
format = AudioSystem::MP3;
}
if (format != AudioSystem::INVALID_FORMAT) {
if (target == "Manager") {
mTestFormat = format;
} else if (mTestOutputs[mCurOutput] != 0) {
AudioParameter outputParam = AudioParameter();
outputParam.addInt(String8("format"), format);
mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
}
}
}
if (param.get(String8("test_cmd_policy_channels"), value) == NO_ERROR) {
param.remove(String8("test_cmd_policy_channels"));
int channels = 0;
if (value == "Channels Stereo") {
channels = AudioSystem::CHANNEL_OUT_STEREO;
} else if (value == "Channels Mono") {
channels = AudioSystem::CHANNEL_OUT_MONO;
}
if (channels != 0) {
if (target == "Manager") {
mTestChannels = channels;
} else if (mTestOutputs[mCurOutput] != 0) {
AudioParameter outputParam = AudioParameter();
outputParam.addInt(String8("channels"), channels);
mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
}
}
}
if (param.getInt(String8("test_cmd_policy_sampleRate"), valueInt) == NO_ERROR) {
param.remove(String8("test_cmd_policy_sampleRate"));
if (valueInt >= 0 && valueInt <= 96000) {
int samplingRate = valueInt;
if (target == "Manager") {
mTestSamplingRate = samplingRate;
} else if (mTestOutputs[mCurOutput] != 0) {
AudioParameter outputParam = AudioParameter();
outputParam.addInt(String8("sampling_rate"), samplingRate);
mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString());
}
}
}
if (param.get(String8("test_cmd_policy_reopen"), value) == NO_ERROR) {
param.remove(String8("test_cmd_policy_reopen"));
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mPrimaryOutput);
mpClientInterface->closeOutput(mPrimaryOutput);
audio_module_handle_t moduleHandle = outputDesc->mModule->mHandle;
delete mOutputs.valueFor(mPrimaryOutput);
mOutputs.removeItem(mPrimaryOutput);
AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL);
outputDesc->mDevice = AUDIO_DEVICE_OUT_SPEAKER;
mPrimaryOutput = mpClientInterface->openOutput(moduleHandle,
&outputDesc->mDevice,
&outputDesc->mSamplingRate,
&outputDesc->mFormat,
&outputDesc->mChannelMask,
&outputDesc->mLatency,
outputDesc->mFlags);
if (mPrimaryOutput == 0) {
ALOGE("Failed to reopen hardware output stream, samplingRate: %d, format %d, channels %d",
outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannelMask);
} else {
AudioParameter outputCmd = AudioParameter();
outputCmd.addInt(String8("set_id"), 0);
mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString());
addOutput(mPrimaryOutput, outputDesc);
}
}
mpClientInterface->setParameters(0, String8("test_cmd_policy="));
}
}
return false;
}
void AudioPolicyManagerBase::exit()
{
{
AutoMutex _l(mLock);
requestExit();
mWaitWorkCV.signal();
}
requestExitAndWait();
}
int AudioPolicyManagerBase::testOutputIndex(audio_io_handle_t output)
{
for (int i = 0; i < NUM_TEST_OUTPUTS; i++) {
if (output == mTestOutputs[i]) return i;
}
return 0;
}
#endif //AUDIO_POLICY_TEST
// ---
void AudioPolicyManagerBase::addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc)
{
outputDesc->mId = id;
mOutputs.add(id, outputDesc);
}
void AudioPolicyManagerBase::addInput(audio_io_handle_t id, AudioInputDescriptor *inputDesc)
{
inputDesc->mId = id;
mInputs.add(id, inputDesc);
}
status_t AudioPolicyManagerBase::checkOutputsForDevice(audio_devices_t device,
AudioSystem::device_connection_state state,
SortedVector<audio_io_handle_t>& outputs,
const String8 paramStr)
{
AudioOutputDescriptor *desc;
if (state == AudioSystem::DEVICE_STATE_AVAILABLE) {
// first list already open outputs that can be routed to this device
for (size_t i = 0; i < mOutputs.size(); i++) {
desc = mOutputs.valueAt(i);
if (!desc->isDuplicated() && (desc->mProfile->mSupportedDevices & device)) {
ALOGV("checkOutputsForDevice(): adding opened output %d", mOutputs.keyAt(i));
outputs.add(mOutputs.keyAt(i));
}
}
// then look for output profiles that can be routed to this device
SortedVector<IOProfile *> profiles;
for (size_t i = 0; i < mHwModules.size(); i++)
{
if (mHwModules[i]->mHandle == 0) {
continue;
}
for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
{
if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices & device) {
ALOGV("checkOutputsForDevice(): adding profile %zu from module %zu", j, i);
profiles.add(mHwModules[i]->mOutputProfiles[j]);
}
}
}
if (profiles.isEmpty() && outputs.isEmpty()) {
ALOGW("checkOutputsForDevice(): No output available for device %04x", device);
return BAD_VALUE;
}
// open outputs for matching profiles if needed. Direct outputs are also opened to
// query for dynamic parameters and will be closed later by setDeviceConnectionState()
for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) {
IOProfile *profile = profiles[profile_index];
// nothing to do if one output is already opened for this profile
size_t j;
for (j = 0; j < mOutputs.size(); j++) {
desc = mOutputs.valueAt(j);
if (!desc->isDuplicated() && desc->mProfile == profile) {
break;
}
}
if (j != mOutputs.size()) {
continue;
}
ALOGV("opening output for device %08x with params %s", device, paramStr.string());
desc = new AudioOutputDescriptor(profile);
desc->mDevice = device;
audio_offload_info_t offloadInfo = AUDIO_INFO_INITIALIZER;
offloadInfo.sample_rate = desc->mSamplingRate;
offloadInfo.format = desc->mFormat;
offloadInfo.channel_mask = desc->mChannelMask;
audio_io_handle_t output = mpClientInterface->openOutput(profile->mModule->mHandle,
&desc->mDevice,
&desc->mSamplingRate,
&desc->mFormat,
&desc->mChannelMask,
&desc->mLatency,
desc->mFlags,
&offloadInfo);
if (output != 0) {
if (!paramStr.isEmpty()) {
// Here is where the out_set_parameters() for card & device gets called
mpClientInterface->setParameters(output, paramStr);
}
// Here is where we step through and resolve any "dynamic" fields
String8 reply;
char *value;
if (profile->mSamplingRates[0] == 0) {
reply = mpClientInterface->getParameters(output,
String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES));
ALOGV("checkOutputsForDevice() direct output sup sampling rates %s",
reply.string());
value = strpbrk((char *)reply.string(), "=");
if (value != NULL) {
loadSamplingRates(value + 1, profile);
}
}
if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) {
reply = mpClientInterface->getParameters(output,
String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS));
ALOGV("checkOutputsForDevice() direct output sup formats %s",
reply.string());
value = strpbrk((char *)reply.string(), "=");
if (value != NULL) {
loadFormats(value + 1, profile);
}
}
if (profile->mChannelMasks[0] == 0) {
reply = mpClientInterface->getParameters(output,
String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS));
ALOGV("checkOutputsForDevice() direct output sup channel masks %s",
reply.string());
value = strpbrk((char *)reply.string(), "=");
if (value != NULL) {
loadOutChannels(value + 1, profile);
}
}
if (((profile->mSamplingRates[0] == 0) &&
(profile->mSamplingRates.size() < 2)) ||
((profile->mFormats[0] == 0) &&
(profile->mFormats.size() < 2)) ||
((profile->mChannelMasks[0] == 0) &&
(profile->mChannelMasks.size() < 2))) {
ALOGW("checkOutputsForDevice() direct output missing param");
mpClientInterface->closeOutput(output);
output = 0;
} else if (profile->mSamplingRates[0] == 0) {
mpClientInterface->closeOutput(output);
desc->mSamplingRate = profile->mSamplingRates[1];
offloadInfo.sample_rate = desc->mSamplingRate;
output = mpClientInterface->openOutput(
profile->mModule->mHandle,
&desc->mDevice,
&desc->mSamplingRate,
&desc->mFormat,
&desc->mChannelMask,
&desc->mLatency,
desc->mFlags,
&offloadInfo);
}
if (output != 0) {
addOutput(output, desc);
if ((desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) == 0) {
audio_io_handle_t duplicatedOutput = 0;
// set initial stream volume for device
applyStreamVolumes(output, device, 0, true);
//TODO: configure audio effect output stage here
// open a duplicating output thread for the new output and the primary output
duplicatedOutput = mpClientInterface->openDuplicateOutput(output,
mPrimaryOutput);
if (duplicatedOutput != 0) {
// add duplicated output descriptor
AudioOutputDescriptor *dupOutputDesc = new AudioOutputDescriptor(NULL);
dupOutputDesc->mOutput1 = mOutputs.valueFor(mPrimaryOutput);
dupOutputDesc->mOutput2 = mOutputs.valueFor(output);
dupOutputDesc->mSamplingRate = desc->mSamplingRate;
dupOutputDesc->mFormat = desc->mFormat;
dupOutputDesc->mChannelMask = desc->mChannelMask;
dupOutputDesc->mLatency = desc->mLatency;
addOutput(duplicatedOutput, dupOutputDesc);
applyStreamVolumes(duplicatedOutput, device, 0, true);
} else {
ALOGW("checkOutputsForDevice() could not open dup output for %d and %d",
mPrimaryOutput, output);
mpClientInterface->closeOutput(output);
mOutputs.removeItem(output);
output = 0;
}
}
}
}
if (output == 0) {
ALOGW("checkOutputsForDevice() could not open output for device %x", device);
delete desc;
profiles.removeAt(profile_index);
profile_index--;
} else {
outputs.add(output);
ALOGV("checkOutputsForDevice(): adding output %d", output);
}
}
if (profiles.isEmpty()) {
ALOGW("checkOutputsForDevice(): No output available for device %04x", device);
return BAD_VALUE;
}
} else { // Disconnect
// check if one opened output is not needed any more after disconnecting one device
for (size_t i = 0; i < mOutputs.size(); i++) {
desc = mOutputs.valueAt(i);
if (!desc->isDuplicated() &&
!(desc->mProfile->mSupportedDevices & mAvailableOutputDevices)) {
ALOGV("checkOutputsForDevice(): disconnecting adding output %d", mOutputs.keyAt(i));
outputs.add(mOutputs.keyAt(i));
}
}
// Clear any profiles associated with the disconnected device.
for (size_t i = 0; i < mHwModules.size(); i++)
{
if (mHwModules[i]->mHandle == 0) {
continue;
}
for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++)
{
IOProfile *profile = mHwModules[i]->mOutputProfiles[j];
if (profile->mSupportedDevices & device) {
ALOGV("checkOutputsForDevice(): clearing direct output profile %zu on module %zu",
j, i);
if (profile->mSamplingRates[0] == 0) {
profile->mSamplingRates.clear();
profile->mSamplingRates.add(0);
}
if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) {
profile->mFormats.clear();
profile->mFormats.add(AUDIO_FORMAT_DEFAULT);
}
if (profile->mChannelMasks[0] == 0) {
profile->mChannelMasks.clear();
profile->mChannelMasks.add(0);
}
}
}
}
}
return NO_ERROR;
}
status_t AudioPolicyManagerBase::checkInputsForDevice(audio_devices_t device,
AudioSystem::device_connection_state state,
SortedVector<audio_io_handle_t>& inputs,
const String8 paramStr)
{
AudioInputDescriptor *desc;
if (state == AudioSystem::DEVICE_STATE_AVAILABLE) {
// first list already open inputs that can be routed to this device
for (size_t input_index = 0; input_index < mInputs.size(); input_index++) {
desc = mInputs.valueAt(input_index);
if (desc->mProfile->mSupportedDevices & (device & ~AUDIO_DEVICE_BIT_IN)) {
ALOGV("checkInputsForDevice(): adding opened input %d", mInputs.keyAt(input_index));
inputs.add(mInputs.keyAt(input_index));
}
}
// then look for input profiles that can be routed to this device
SortedVector<IOProfile *> profiles;
for (size_t module_index = 0; module_index < mHwModules.size(); module_index++)
{
if (mHwModules[module_index]->mHandle == 0) {
continue;
}
for (size_t profile_index = 0;
profile_index < mHwModules[module_index]->mInputProfiles.size();
profile_index++)
{
if (mHwModules[module_index]->mInputProfiles[profile_index]->mSupportedDevices
& (device & ~AUDIO_DEVICE_BIT_IN)) {
ALOGV("checkInputsForDevice(): adding profile %zu from module %zu",
profile_index, module_index);
profiles.add(mHwModules[module_index]->mInputProfiles[profile_index]);
}
}
}
if (profiles.isEmpty() && inputs.isEmpty()) {
ALOGW("checkInputsForDevice(): No input available for device 0x%X", device);
return BAD_VALUE;
}
// open inputs for matching profiles if needed. Direct inputs are also opened to
// query for dynamic parameters and will be closed later by setDeviceConnectionState()
for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) {
IOProfile *profile = profiles[profile_index];
// nothing to do if one input is already opened for this profile
size_t input_index;
for (input_index = 0; input_index < mInputs.size(); input_index++) {
desc = mInputs.valueAt(input_index);
if (desc->mProfile == profile) {
break;
}
}
if (input_index != mInputs.size()) {
continue;
}
ALOGV("opening input for device 0x%X with params %s", device, paramStr.string());
desc = new AudioInputDescriptor(profile);
desc->mDevice = device;
audio_io_handle_t input = mpClientInterface->openInput(profile->mModule->mHandle,
&desc->mDevice,
&desc->mSamplingRate,
&desc->mFormat,
&desc->mChannelMask);
if (input != 0) {
if (!paramStr.isEmpty()) {
mpClientInterface->setParameters(input, paramStr);
}
// Here is where we step through and resolve any "dynamic" fields
String8 reply;
char *value;
if (profile->mSamplingRates[0] == 0) {
reply = mpClientInterface->getParameters(input,
String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES));
ALOGV("checkInputsForDevice() direct input sup sampling rates %s",
reply.string());
value = strpbrk((char *)reply.string(), "=");
if (value != NULL) {
loadSamplingRates(value + 1, profile);
}
}
if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) {
reply = mpClientInterface->getParameters(input,
String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS));
ALOGV("checkInputsForDevice() direct input sup formats %s", reply.string());
value = strpbrk((char *)reply.string(), "=");
if (value != NULL) {
loadFormats(value + 1, profile);
}
}
if (profile->mChannelMasks[0] == 0) {
reply = mpClientInterface->getParameters(input,
String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS));
ALOGV("checkInputsForDevice() direct input sup channel masks %s",
reply.string());
value = strpbrk((char *)reply.string(), "=");
if (value != NULL) {
loadInChannels(value + 1, profile);
}
}
if (((profile->mSamplingRates[0] == 0) && (profile->mSamplingRates.size() < 2)) ||
((profile->mFormats[0] == 0) && (profile->mFormats.size() < 2)) ||
((profile->mChannelMasks[0] == 0) && (profile->mChannelMasks.size() < 2))) {
ALOGW("checkInputsForDevice() direct input missing param");
mpClientInterface->closeInput(input);
input = 0;
}
if (input != 0) {
addInput(input, desc);
}
} // endif input != 0
if (input == 0) {
ALOGW("checkInputsForDevice() could not open input for device 0x%X", device);
delete desc;
profiles.removeAt(profile_index);
profile_index--;
} else {
inputs.add(input);
ALOGV("checkInputsForDevice(): adding input %d", input);
}
} // end scan profiles
if (profiles.isEmpty()) {
ALOGW("checkInputsForDevice(): No input available for device 0x%X", device);
return BAD_VALUE;
}
} else {
// Disconnect
// check if one opened input is not needed any more after disconnecting one device
for (size_t input_index = 0; input_index < mInputs.size(); input_index++) {
desc = mInputs.valueAt(input_index);
if (!(desc->mProfile->mSupportedDevices & mAvailableInputDevices)) {
ALOGV("checkInputsForDevice(): disconnecting adding input %d",
mInputs.keyAt(input_index));
inputs.add(mInputs.keyAt(input_index));
}
}
// Clear any profiles associated with the disconnected device.
for (size_t module_index = 0; module_index < mHwModules.size(); module_index++)
{
if (mHwModules[module_index]->mHandle == 0) {
continue;
}
for (size_t profile_index = 0;
profile_index < mHwModules[module_index]->mInputProfiles.size();
profile_index++)
{
IOProfile *profile = mHwModules[module_index]->mInputProfiles[profile_index];
if (profile->mSupportedDevices & device) {
ALOGV("checkInputsForDevice(): clearing direct input profile %zu on module %zu",
profile_index, module_index);
if (profile->mSamplingRates[0] == 0) {
profile->mSamplingRates.clear();
profile->mSamplingRates.add(0);
}
if (profile->mFormats[0] == AUDIO_FORMAT_DEFAULT) {
profile->mFormats.clear();
profile->mFormats.add(AUDIO_FORMAT_DEFAULT);
}
if (profile->mChannelMasks[0] == 0) {
profile->mChannelMasks.clear();
profile->mChannelMasks.add(0);
}
}
}
}
} // end disconnect
return NO_ERROR;
}
void AudioPolicyManagerBase::closeOutput(audio_io_handle_t output)
{
ALOGV("closeOutput(%d)", output);
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
if (outputDesc == NULL) {
ALOGW("closeOutput() unknown output %d", output);
return;
}
// look for duplicated outputs connected to the output being removed.
for (size_t i = 0; i < mOutputs.size(); i++) {
AudioOutputDescriptor *dupOutputDesc = mOutputs.valueAt(i);
if (dupOutputDesc->isDuplicated() &&
(dupOutputDesc->mOutput1 == outputDesc ||
dupOutputDesc->mOutput2 == outputDesc)) {
AudioOutputDescriptor *outputDesc2;
if (dupOutputDesc->mOutput1 == outputDesc) {
outputDesc2 = dupOutputDesc->mOutput2;
} else {
outputDesc2 = dupOutputDesc->mOutput1;
}
// As all active tracks on duplicated output will be deleted,
// and as they were also referenced on the other output, the reference
// count for their stream type must be adjusted accordingly on
// the other output.
for (int j = 0; j < (int)AudioSystem::NUM_STREAM_TYPES; j++) {
int refCount = dupOutputDesc->mRefCount[j];
outputDesc2->changeRefCount((AudioSystem::stream_type)j,-refCount);
}
audio_io_handle_t duplicatedOutput = mOutputs.keyAt(i);
ALOGV("closeOutput() closing also duplicated output %d", duplicatedOutput);
mpClientInterface->closeOutput(duplicatedOutput);
delete mOutputs.valueFor(duplicatedOutput);
mOutputs.removeItem(duplicatedOutput);
}
}
AudioParameter param;
param.add(String8("closing"), String8("true"));
mpClientInterface->setParameters(output, param.toString());
mpClientInterface->closeOutput(output);
delete outputDesc;
mOutputs.removeItem(output);
mPreviousOutputs = mOutputs;
}
SortedVector<audio_io_handle_t> AudioPolicyManagerBase::getOutputsForDevice(audio_devices_t device,
DefaultKeyedVector<audio_io_handle_t, AudioOutputDescriptor *> openOutputs)
{
SortedVector<audio_io_handle_t> outputs;
ALOGVV("getOutputsForDevice() device %04x", device);
for (size_t i = 0; i < openOutputs.size(); i++) {
ALOGVV("output %d isDuplicated=%d device=%04x",
i, openOutputs.valueAt(i)->isDuplicated(), openOutputs.valueAt(i)->supportedDevices());
if ((device & openOutputs.valueAt(i)->supportedDevices()) == device) {
ALOGVV("getOutputsForDevice() found output %d", openOutputs.keyAt(i));
outputs.add(openOutputs.keyAt(i));
}
}
return outputs;
}
bool AudioPolicyManagerBase::vectorsEqual(SortedVector<audio_io_handle_t>& outputs1,
SortedVector<audio_io_handle_t>& outputs2)
{
if (outputs1.size() != outputs2.size()) {
return false;
}
for (size_t i = 0; i < outputs1.size(); i++) {
if (outputs1[i] != outputs2[i]) {
return false;
}
}
return true;
}
void AudioPolicyManagerBase::checkOutputForStrategy(routing_strategy strategy)
{
audio_devices_t oldDevice = getDeviceForStrategy(strategy, true /*fromCache*/);
audio_devices_t newDevice = getDeviceForStrategy(strategy, false /*fromCache*/);
SortedVector<audio_io_handle_t> srcOutputs = getOutputsForDevice(oldDevice, mPreviousOutputs);
SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(newDevice, mOutputs);
if (!vectorsEqual(srcOutputs,dstOutputs)) {
ALOGV("checkOutputForStrategy() strategy %d, moving from output %d to output %d",
strategy, srcOutputs[0], dstOutputs[0]);
// mute strategy while moving tracks from one output to another
for (size_t i = 0; i < srcOutputs.size(); i++) {
AudioOutputDescriptor *desc = mOutputs.valueFor(srcOutputs[i]);
if (desc->isStrategyActive(strategy)) {
setStrategyMute(strategy, true, srcOutputs[i]);
setStrategyMute(strategy, false, srcOutputs[i], MUTE_TIME_MS, newDevice);
}
}
// Move effects associated to this strategy from previous output to new output
if (strategy == STRATEGY_MEDIA) {
audio_io_handle_t fxOutput = selectOutputForEffects(dstOutputs);
SortedVector<audio_io_handle_t> moved;
for (size_t i = 0; i < mEffects.size(); i++) {
EffectDescriptor *desc = mEffects.valueAt(i);
if (desc->mSession == AUDIO_SESSION_OUTPUT_MIX &&
desc->mIo != fxOutput) {
if (moved.indexOf(desc->mIo) < 0) {
ALOGV("checkOutputForStrategy() moving effect %d to output %d",
mEffects.keyAt(i), fxOutput);
mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, desc->mIo,
fxOutput);
moved.add(desc->mIo);
}
desc->mIo = fxOutput;
}
}
}
// Move tracks associated to this strategy from previous output to new output
for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
if (getStrategy((AudioSystem::stream_type)i) == strategy) {
mpClientInterface->invalidateStream((AudioSystem::stream_type)i);
}
}
}
}
void AudioPolicyManagerBase::checkOutputForAllStrategies()
{
checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE);
checkOutputForStrategy(STRATEGY_PHONE);
checkOutputForStrategy(STRATEGY_SONIFICATION);
checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL);
checkOutputForStrategy(STRATEGY_MEDIA);
checkOutputForStrategy(STRATEGY_DTMF);
}
audio_io_handle_t AudioPolicyManagerBase::getA2dpOutput()
{
if (!mHasA2dp) {
return 0;
}
for (size_t i = 0; i < mOutputs.size(); i++) {
AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
if (!outputDesc->isDuplicated() && outputDesc->device() & AUDIO_DEVICE_OUT_ALL_A2DP) {
return mOutputs.keyAt(i);
}
}
return 0;
}
void AudioPolicyManagerBase::checkA2dpSuspend()
{
if (!mHasA2dp) {
return;
}
audio_io_handle_t a2dpOutput = getA2dpOutput();
if (a2dpOutput == 0) {
return;
}
// suspend A2DP output if:
// (NOT already suspended) &&
// ((SCO device is connected &&
// (forced usage for communication || for record is SCO))) ||
// (phone state is ringing || in call)
//
// restore A2DP output if:
// (Already suspended) &&
// ((SCO device is NOT connected ||
// (forced usage NOT for communication && NOT for record is SCO))) &&
// (phone state is NOT ringing && NOT in call)
//
if (mA2dpSuspended) {
if (((mScoDeviceAddress == "") ||
((mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO) &&
(mForceUse[AudioSystem::FOR_RECORD] != AudioSystem::FORCE_BT_SCO))) &&
((mPhoneState != AudioSystem::MODE_IN_CALL) &&
(mPhoneState != AudioSystem::MODE_RINGTONE))) {
mpClientInterface->restoreOutput(a2dpOutput);
mA2dpSuspended = false;
}
} else {
if (((mScoDeviceAddress != "") &&
((mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) ||
(mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO))) ||
((mPhoneState == AudioSystem::MODE_IN_CALL) ||
(mPhoneState == AudioSystem::MODE_RINGTONE))) {
mpClientInterface->suspendOutput(a2dpOutput);
mA2dpSuspended = true;
}
}
}
audio_devices_t AudioPolicyManagerBase::getNewDevice(audio_io_handle_t output, bool fromCache)
{
audio_devices_t device = AUDIO_DEVICE_NONE;
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
// check the following by order of priority to request a routing change if necessary:
// 1: the strategy enforced audible is active on the output:
// use device for strategy enforced audible
// 2: we are in call or the strategy phone is active on the output:
// use device for strategy phone
// 3: the strategy sonification is active on the output:
// use device for strategy sonification
// 4: the strategy "respectful" sonification is active on the output:
// use device for strategy "respectful" sonification
// 5: the strategy media is active on the output:
// use device for strategy media
// 6: the strategy DTMF is active on the output:
// use device for strategy DTMF
if (outputDesc->isStrategyActive(STRATEGY_ENFORCED_AUDIBLE)) {
device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache);
} else if (isInCall() ||
outputDesc->isStrategyActive(STRATEGY_PHONE)) {
device = getDeviceForStrategy(STRATEGY_PHONE, fromCache);
} else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION)) {
device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache);
} else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION_RESPECTFUL)) {
device = getDeviceForStrategy(STRATEGY_SONIFICATION_RESPECTFUL, fromCache);
} else if (outputDesc->isStrategyActive(STRATEGY_MEDIA)) {
device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache);
} else if (outputDesc->isStrategyActive(STRATEGY_DTMF)) {
device = getDeviceForStrategy(STRATEGY_DTMF, fromCache);
}
ALOGV("getNewDevice() selected device %x", device);
return device;
}
uint32_t AudioPolicyManagerBase::getStrategyForStream(AudioSystem::stream_type stream) {
return (uint32_t)getStrategy(stream);
}
audio_devices_t AudioPolicyManagerBase::getDevicesForStream(AudioSystem::stream_type stream) {
audio_devices_t devices;
// By checking the range of stream before calling getStrategy, we avoid
// getStrategy's behavior for invalid streams. getStrategy would do a ALOGE
// and then return STRATEGY_MEDIA, but we want to return the empty set.
if (stream < (AudioSystem::stream_type) 0 || stream >= AudioSystem::NUM_STREAM_TYPES) {
devices = AUDIO_DEVICE_NONE;
} else {
AudioPolicyManagerBase::routing_strategy strategy = getStrategy(stream);
devices = getDeviceForStrategy(strategy, true /*fromCache*/);
}
return devices;
}
AudioPolicyManagerBase::routing_strategy AudioPolicyManagerBase::getStrategy(
AudioSystem::stream_type stream) {
// stream to strategy mapping
switch (stream) {
case AudioSystem::VOICE_CALL:
case AudioSystem::BLUETOOTH_SCO:
return STRATEGY_PHONE;
case AudioSystem::RING:
case AudioSystem::ALARM:
return STRATEGY_SONIFICATION;
case AudioSystem::NOTIFICATION:
return STRATEGY_SONIFICATION_RESPECTFUL;
case AudioSystem::DTMF:
return STRATEGY_DTMF;
default:
ALOGE("unknown stream type");
case AudioSystem::SYSTEM:
// NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs
// while key clicks are played produces a poor result
case AudioSystem::TTS:
case AudioSystem::MUSIC:
return STRATEGY_MEDIA;
case AudioSystem::ENFORCED_AUDIBLE:
return STRATEGY_ENFORCED_AUDIBLE;
}
}
void AudioPolicyManagerBase::handleNotificationRoutingForStream(AudioSystem::stream_type stream) {
switch(stream) {
case AudioSystem::MUSIC:
checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL);
updateDevicesAndOutputs();
break;
default:
break;
}
}
audio_devices_t AudioPolicyManagerBase::getDeviceForStrategy(routing_strategy strategy,
bool fromCache)
{
uint32_t device = AUDIO_DEVICE_NONE;
if (fromCache) {
ALOGVV("getDeviceForStrategy() from cache strategy %d, device %x",
strategy, mDeviceForStrategy[strategy]);
return mDeviceForStrategy[strategy];
}
switch (strategy) {
case STRATEGY_SONIFICATION_RESPECTFUL:
if (isInCall()) {
device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
} else if (isStreamActiveRemotely(AudioSystem::MUSIC,
SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) {
// while media is playing on a remote device, use the the sonification behavior.
// Note that we test this usecase before testing if media is playing because
// the isStreamActive() method only informs about the activity of a stream, not
// if it's for local playback. Note also that we use the same delay between both tests
device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
} else if (isStreamActive(AudioSystem::MUSIC, SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) {
// while media is playing (or has recently played), use the same device
device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/);
} else {
// when media is not playing anymore, fall back on the sonification behavior
device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
}
break;
case STRATEGY_DTMF:
if (!isInCall()) {
// when off call, DTMF strategy follows the same rules as MEDIA strategy
device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/);
break;
}
// when in call, DTMF and PHONE strategies follow the same rules
// FALL THROUGH
case STRATEGY_PHONE:
// for phone strategy, we first consider the forced use and then the available devices by order
// of priority
switch (mForceUse[AudioSystem::FOR_COMMUNICATION]) {
case AudioSystem::FORCE_BT_SCO:
if (!isInCall() || strategy != STRATEGY_DTMF) {
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
if (device) break;
}
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO;
if (device) break;
// if SCO device is requested but no SCO device is available, fall back to default case
// FALL THROUGH
default: // FORCE_NONE
// when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP
if (mHasA2dp && !isInCall() &&
(mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
(getA2dpOutput() != 0) && !mA2dpSuspended) {
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
if (device) break;
}
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADSET;
if (device) break;
if (mPhoneState != AudioSystem::MODE_IN_CALL) {
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
if (device) break;
}
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_EARPIECE;
if (device) break;
device = mDefaultOutputDevice;
if (device == AUDIO_DEVICE_NONE) {
ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE");
}
break;
case AudioSystem::FORCE_SPEAKER:
// when not in a phone call, phone strategy should route STREAM_VOICE_CALL to
// A2DP speaker when forcing to speaker output
if (mHasA2dp && !isInCall() &&
(mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
(getA2dpOutput() != 0) && !mA2dpSuspended) {
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
if (device) break;
}
if (mPhoneState != AudioSystem::MODE_IN_CALL) {
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
if (device) break;
}
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
if (device) break;
device = mDefaultOutputDevice;
if (device == AUDIO_DEVICE_NONE) {
ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE, FORCE_SPEAKER");
}
break;
}
break;
case STRATEGY_SONIFICATION:
// If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by
// handleIncallSonification().
if (isInCall()) {
device = getDeviceForStrategy(STRATEGY_PHONE, false /*fromCache*/);
break;
}
// FALL THROUGH
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) ||
(mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_SYSTEM_ENFORCED)) {
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
if (device == AUDIO_DEVICE_NONE) {
ALOGE("getDeviceForStrategy() speaker device not found for STRATEGY_SONIFICATION");
}
}
// The second device used for sonification is the same as the device used by media strategy
// FALL THROUGH
case STRATEGY_MEDIA: {
uint32_t device2 = AUDIO_DEVICE_NONE;
if (strategy != STRATEGY_SONIFICATION) {
// no sonification on remote submix (e.g. WFD)
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_REMOTE_SUBMIX;
}
if ((device2 == AUDIO_DEVICE_NONE) &&
mHasA2dp && (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
(getA2dpOutput() != 0) && !mA2dpSuspended) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
}
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADSET;
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
}
if ((device2 == AUDIO_DEVICE_NONE) && (strategy != STRATEGY_SONIFICATION)) {
// no sonification on aux digital (e.g. HDMI)
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
}
if ((device2 == AUDIO_DEVICE_NONE) &&
(mForceUse[AudioSystem::FOR_DOCK] == AudioSystem::FORCE_ANALOG_DOCK)) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
}
// device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or
// STRATEGY_ENFORCED_AUDIBLE, AUDIO_DEVICE_NONE otherwise
device |= device2;
if (device) break;
device = mDefaultOutputDevice;
if (device == AUDIO_DEVICE_NONE) {
ALOGE("getDeviceForStrategy() no device found for STRATEGY_MEDIA");
}
} break;
default:
ALOGW("getDeviceForStrategy() unknown strategy: %d", strategy);
break;
}
ALOGVV("getDeviceForStrategy() strategy %d, device %x", strategy, device);
return device;
}
void AudioPolicyManagerBase::updateDevicesAndOutputs()
{
for (int i = 0; i < NUM_STRATEGIES; i++) {
mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/);
}
mPreviousOutputs = mOutputs;
}
uint32_t AudioPolicyManagerBase::checkDeviceMuteStrategies(AudioOutputDescriptor *outputDesc,
audio_devices_t prevDevice,
uint32_t delayMs)
{
// mute/unmute strategies using an incompatible device combination
// if muting, wait for the audio in pcm buffer to be drained before proceeding
// if unmuting, unmute only after the specified delay
if (outputDesc->isDuplicated()) {
return 0;
}
uint32_t muteWaitMs = 0;
audio_devices_t device = outputDesc->device();
bool shouldMute = outputDesc->isActive() && (AudioSystem::popCount(device) >= 2);
// temporary mute output if device selection changes to avoid volume bursts due to
// different per device volumes
bool tempMute = outputDesc->isActive() && (device != prevDevice);
for (size_t i = 0; i < NUM_STRATEGIES; i++) {
audio_devices_t curDevice = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/);
bool mute = shouldMute && (curDevice & device) && (curDevice != device);
bool doMute = false;
if (mute && !outputDesc->mStrategyMutedByDevice[i]) {
doMute = true;
outputDesc->mStrategyMutedByDevice[i] = true;
} else if (!mute && outputDesc->mStrategyMutedByDevice[i]){
doMute = true;
outputDesc->mStrategyMutedByDevice[i] = false;
}
if (doMute || tempMute) {
for (size_t j = 0; j < mOutputs.size(); j++) {
AudioOutputDescriptor *desc = mOutputs.valueAt(j);
// skip output if it does not share any device with current output
if ((desc->supportedDevices() & outputDesc->supportedDevices())
== AUDIO_DEVICE_NONE) {
continue;
}
audio_io_handle_t curOutput = mOutputs.keyAt(j);
ALOGVV("checkDeviceMuteStrategies() %s strategy %d (curDevice %04x) on output %d",
mute ? "muting" : "unmuting", i, curDevice, curOutput);
setStrategyMute((routing_strategy)i, mute, curOutput, mute ? 0 : delayMs);
if (desc->isStrategyActive((routing_strategy)i)) {
// do tempMute only for current output
if (tempMute && (desc == outputDesc)) {
setStrategyMute((routing_strategy)i, true, curOutput);
setStrategyMute((routing_strategy)i, false, curOutput,
desc->latency() * 2, device);
}
if ((tempMute && (desc == outputDesc)) || mute) {
if (muteWaitMs < desc->latency()) {
muteWaitMs = desc->latency();
}
}
}
}
}
}
// FIXME: should not need to double latency if volume could be applied immediately by the
// audioflinger mixer. We must account for the delay between now and the next time
// the audioflinger thread for this output will process a buffer (which corresponds to
// one buffer size, usually 1/2 or 1/4 of the latency).
muteWaitMs *= 2;
// wait for the PCM output buffers to empty before proceeding with the rest of the command
if (muteWaitMs > delayMs) {
muteWaitMs -= delayMs;
usleep(muteWaitMs * 1000);
return muteWaitMs;
}
return 0;
}
uint32_t AudioPolicyManagerBase::setOutputDevice(audio_io_handle_t output,
audio_devices_t device,
bool force,
int delayMs)
{
ALOGV("setOutputDevice() output %d device %04x delayMs %d", output, device, delayMs);
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
AudioParameter param;
uint32_t muteWaitMs;
if (outputDesc->isDuplicated()) {
muteWaitMs = setOutputDevice(outputDesc->mOutput1->mId, device, force, delayMs);
muteWaitMs += setOutputDevice(outputDesc->mOutput2->mId, device, force, delayMs);
return muteWaitMs;
}
// no need to proceed if new device is not AUDIO_DEVICE_NONE and not supported by current
// output profile
if ((device != AUDIO_DEVICE_NONE) &&
((device & outputDesc->mProfile->mSupportedDevices) == 0)) {
return 0;
}
// filter devices according to output selected
device = (audio_devices_t)(device & outputDesc->mProfile->mSupportedDevices);
audio_devices_t prevDevice = outputDesc->mDevice;
ALOGV("setOutputDevice() prevDevice %04x", prevDevice);
if (device != AUDIO_DEVICE_NONE) {
outputDesc->mDevice = device;
// Force routing if previously asked for this output
if (outputDesc->mForceRouting) {
ALOGV("Force routing to current device as previous device was null for this output");
force = true;
// Request consumed. Reset mForceRouting to false
outputDesc->mForceRouting = false;
}
}
else {
// Device is null and does not reflect the routing. Save the necessity to force
// re-routing upon next attempt to select a non-null device for this output
outputDesc->mForceRouting = true;
}
muteWaitMs = checkDeviceMuteStrategies(outputDesc, prevDevice, delayMs);
// Do not change the routing if:
// - the requested device is AUDIO_DEVICE_NONE
// - the requested device is the same as current device and force is not specified.
// Doing this check here allows the caller to call setOutputDevice() without conditions
if ((device == AUDIO_DEVICE_NONE || device == prevDevice) && !force) {
ALOGV("setOutputDevice() setting same device %04x or null device for output %d", device, output);
return muteWaitMs;
}
ALOGV("setOutputDevice() changing device");
// do the routing
param.addInt(String8(AudioParameter::keyRouting), (int)device);
mpClientInterface->setParameters(output, param.toString(), delayMs);
// update stream volumes according to new device
applyStreamVolumes(output, device, delayMs);
return muteWaitMs;
}
AudioPolicyManagerBase::IOProfile *AudioPolicyManagerBase::getInputProfile(audio_devices_t device,
uint32_t samplingRate,
audio_format_t format,
audio_channel_mask_t channelMask)
{
// Choose an input profile based on the requested capture parameters: select the first available
// profile supporting all requested parameters.
for (size_t i = 0; i < mHwModules.size(); i++)
{
if (mHwModules[i]->mHandle == 0) {
continue;
}
for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++)
{
IOProfile *profile = mHwModules[i]->mInputProfiles[j];
// profile->log();
if (profile->isCompatibleProfile(device, samplingRate, format,
channelMask, AUDIO_OUTPUT_FLAG_NONE)) {
return profile;
}
}
}
return NULL;
}
audio_devices_t AudioPolicyManagerBase::getDeviceForInputSource(int inputSource)
{
uint32_t device = AUDIO_DEVICE_NONE;
switch (inputSource) {
case AUDIO_SOURCE_VOICE_UPLINK:
if (mAvailableInputDevices & AUDIO_DEVICE_IN_VOICE_CALL) {
device = AUDIO_DEVICE_IN_VOICE_CALL;
break;
}
// FALL THROUGH
case AUDIO_SOURCE_DEFAULT:
case AUDIO_SOURCE_MIC:
if (mAvailableInputDevices & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) {
device = AUDIO_DEVICE_IN_BLUETOOTH_A2DP;
break;
}
// FALL THROUGH
case AUDIO_SOURCE_VOICE_RECOGNITION:
case AUDIO_SOURCE_HOTWORD:
case AUDIO_SOURCE_VOICE_COMMUNICATION:
if (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO &&
mAvailableInputDevices & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
} else if (mAvailableInputDevices & AUDIO_DEVICE_IN_WIRED_HEADSET) {
device = AUDIO_DEVICE_IN_WIRED_HEADSET;
} else if (mAvailableInputDevices & AUDIO_DEVICE_IN_USB_DEVICE) {
device = AUDIO_DEVICE_IN_USB_DEVICE;
} else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
device = AUDIO_DEVICE_IN_BUILTIN_MIC;
}
break;
case AUDIO_SOURCE_CAMCORDER:
if (mAvailableInputDevices & AUDIO_DEVICE_IN_BACK_MIC) {
device = AUDIO_DEVICE_IN_BACK_MIC;
} else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
device = AUDIO_DEVICE_IN_BUILTIN_MIC;
}
break;
case AUDIO_SOURCE_VOICE_DOWNLINK:
case AUDIO_SOURCE_VOICE_CALL:
if (mAvailableInputDevices & AUDIO_DEVICE_IN_VOICE_CALL) {
device = AUDIO_DEVICE_IN_VOICE_CALL;
}
break;
case AUDIO_SOURCE_REMOTE_SUBMIX:
if (mAvailableInputDevices & AUDIO_DEVICE_IN_REMOTE_SUBMIX) {
device = AUDIO_DEVICE_IN_REMOTE_SUBMIX;
}
break;
default:
ALOGW("getDeviceForInputSource() invalid input source %d", inputSource);
break;
}
ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device);
return device;
}
bool AudioPolicyManagerBase::isVirtualInputDevice(audio_devices_t device)
{
if ((device & AUDIO_DEVICE_BIT_IN) != 0) {
device &= ~AUDIO_DEVICE_BIT_IN;
if ((popcount(device) == 1) && ((device & ~APM_AUDIO_IN_DEVICE_VIRTUAL_ALL) == 0))
return true;
}
return false;
}
audio_io_handle_t AudioPolicyManagerBase::getActiveInput(bool ignoreVirtualInputs)
{
for (size_t i = 0; i < mInputs.size(); i++) {
const AudioInputDescriptor * input_descriptor = mInputs.valueAt(i);
if ((input_descriptor->mRefCount > 0)
&& (!ignoreVirtualInputs || !isVirtualInputDevice(input_descriptor->mDevice))) {
return mInputs.keyAt(i);
}
}
return 0;
}
audio_devices_t AudioPolicyManagerBase::getDeviceForVolume(audio_devices_t device)
{
if (device == AUDIO_DEVICE_NONE) {
// this happens when forcing a route update and no track is active on an output.
// In this case the returned category is not important.
device = AUDIO_DEVICE_OUT_SPEAKER;
} else if (AudioSystem::popCount(device) > 1) {
// Multiple device selection is either:
// - speaker + one other device: give priority to speaker in this case.
// - one A2DP device + another device: happens with duplicated output. In this case
// retain the device on the A2DP output as the other must not correspond to an active
// selection if not the speaker.
if (device & AUDIO_DEVICE_OUT_SPEAKER) {
device = AUDIO_DEVICE_OUT_SPEAKER;
} else {
device = (audio_devices_t)(device & AUDIO_DEVICE_OUT_ALL_A2DP);
}
}
ALOGW_IF(AudioSystem::popCount(device) != 1,
"getDeviceForVolume() invalid device combination: %08x",
device);
return device;
}
AudioPolicyManagerBase::device_category AudioPolicyManagerBase::getDeviceCategory(audio_devices_t device)
{
switch(getDeviceForVolume(device)) {
case AUDIO_DEVICE_OUT_EARPIECE:
return DEVICE_CATEGORY_EARPIECE;
case AUDIO_DEVICE_OUT_WIRED_HEADSET:
case AUDIO_DEVICE_OUT_WIRED_HEADPHONE:
case AUDIO_DEVICE_OUT_BLUETOOTH_SCO:
case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET:
case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP:
case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES:
return DEVICE_CATEGORY_HEADSET;
case AUDIO_DEVICE_OUT_SPEAKER:
case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT:
case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER:
case AUDIO_DEVICE_OUT_AUX_DIGITAL:
case AUDIO_DEVICE_OUT_USB_ACCESSORY:
case AUDIO_DEVICE_OUT_USB_DEVICE:
case AUDIO_DEVICE_OUT_REMOTE_SUBMIX:
default:
return DEVICE_CATEGORY_SPEAKER;
}
}
float AudioPolicyManagerBase::volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc,
int indexInUi)
{
device_category deviceCategory = getDeviceCategory(device);
const VolumeCurvePoint *curve = streamDesc.mVolumeCurve[deviceCategory];
// the volume index in the UI is relative to the min and max volume indices for this stream type
int nbSteps = 1 + curve[VOLMAX].mIndex -
curve[VOLMIN].mIndex;
int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) /
(streamDesc.mIndexMax - streamDesc.mIndexMin);
// find what part of the curve this index volume belongs to, or if it's out of bounds
int segment = 0;
if (volIdx < curve[VOLMIN].mIndex) { // out of bounds
return 0.0f;
} else if (volIdx < curve[VOLKNEE1].mIndex) {
segment = 0;
} else if (volIdx < curve[VOLKNEE2].mIndex) {
segment = 1;
} else if (volIdx <= curve[VOLMAX].mIndex) {
segment = 2;
} else { // out of bounds
return 1.0f;
}
// linear interpolation in the attenuation table in dB
float decibels = curve[segment].mDBAttenuation +
((float)(volIdx - curve[segment].mIndex)) *
( (curve[segment+1].mDBAttenuation -
curve[segment].mDBAttenuation) /
((float)(curve[segment+1].mIndex -
curve[segment].mIndex)) );
float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 )
ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f",
curve[segment].mIndex, volIdx,
curve[segment+1].mIndex,
curve[segment].mDBAttenuation,
decibels,
curve[segment+1].mDBAttenuation,
amplification);
return amplification;
}
const AudioPolicyManagerBase::VolumeCurvePoint
AudioPolicyManagerBase::sDefaultVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
{1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f}
};
const AudioPolicyManagerBase::VolumeCurvePoint
AudioPolicyManagerBase::sDefaultMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
{1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f}
};
const AudioPolicyManagerBase::VolumeCurvePoint
AudioPolicyManagerBase::sSpeakerMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
{1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f}
};
const AudioPolicyManagerBase::VolumeCurvePoint
AudioPolicyManagerBase::sSpeakerSonificationVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
{1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f}
};
const AudioPolicyManagerBase::VolumeCurvePoint
AudioPolicyManagerBase::sSpeakerSonificationVolumeCurveDrc[AudioPolicyManagerBase::VOLCNT] = {
{1, -35.7f}, {33, -26.1f}, {66, -13.2f}, {100, 0.0f}
};
// AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks
// AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets.
// AUDIO_STREAM_DTMF tracks AUDIO_STREAM_VOICE_CALL while in call (See AudioService.java).
// The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset.
const AudioPolicyManagerBase::VolumeCurvePoint
AudioPolicyManagerBase::sDefaultSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
{1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f}
};
const AudioPolicyManagerBase::VolumeCurvePoint
AudioPolicyManagerBase::sDefaultSystemVolumeCurveDrc[AudioPolicyManagerBase::VOLCNT] = {
{1, -34.0f}, {33, -24.0f}, {66, -15.0f}, {100, -6.0f}
};
const AudioPolicyManagerBase::VolumeCurvePoint
AudioPolicyManagerBase::sHeadsetSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
{1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f}
};
const AudioPolicyManagerBase::VolumeCurvePoint
AudioPolicyManagerBase::sDefaultVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
{0, -42.0f}, {33, -28.0f}, {66, -14.0f}, {100, 0.0f}
};
const AudioPolicyManagerBase::VolumeCurvePoint
AudioPolicyManagerBase::sSpeakerVoiceVolumeCurve[AudioPolicyManagerBase::VOLCNT] = {
{0, -24.0f}, {33, -16.0f}, {66, -8.0f}, {100, 0.0f}
};
const AudioPolicyManagerBase::VolumeCurvePoint
*AudioPolicyManagerBase::sVolumeProfiles[AudioSystem::NUM_STREAM_TYPES]
[AudioPolicyManagerBase::DEVICE_CATEGORY_CNT] = {
{ // AUDIO_STREAM_VOICE_CALL
sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultVoiceVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // AUDIO_STREAM_SYSTEM
sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // AUDIO_STREAM_RING
sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // AUDIO_STREAM_MUSIC
sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // AUDIO_STREAM_ALARM
sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // AUDIO_STREAM_NOTIFICATION
sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // AUDIO_STREAM_BLUETOOTH_SCO
sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultVoiceVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // AUDIO_STREAM_ENFORCED_AUDIBLE
sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // AUDIO_STREAM_DTMF
sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // AUDIO_STREAM_TTS
sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
};
void AudioPolicyManagerBase::initializeVolumeCurves()
{
for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) {
mStreams[i].mVolumeCurve[j] =
sVolumeProfiles[i][j];
}
}
// Check availability of DRC on speaker path: if available, override some of the speaker curves
if (mSpeakerDrcEnabled) {
mStreams[AUDIO_STREAM_SYSTEM].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] =
sDefaultSystemVolumeCurveDrc;
mStreams[AUDIO_STREAM_RING].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] =
sSpeakerSonificationVolumeCurveDrc;
mStreams[AUDIO_STREAM_ALARM].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] =
sSpeakerSonificationVolumeCurveDrc;
mStreams[AUDIO_STREAM_NOTIFICATION].mVolumeCurve[DEVICE_CATEGORY_SPEAKER] =
sSpeakerSonificationVolumeCurveDrc;
}
}
float AudioPolicyManagerBase::computeVolume(int stream,
int index,
audio_io_handle_t output,
audio_devices_t device)
{
float volume = 1.0;
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
StreamDescriptor &streamDesc = mStreams[stream];
if (device == AUDIO_DEVICE_NONE) {
device = outputDesc->device();
}
// if volume is not 0 (not muted), force media volume to max on digital output
if (stream == AudioSystem::MUSIC &&
index != mStreams[stream].mIndexMin &&
(device == AUDIO_DEVICE_OUT_AUX_DIGITAL ||
device == AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET)) {
return 1.0;
}
volume = volIndexToAmpl(device, streamDesc, index);
// if a headset is connected, apply the following rules to ring tones and notifications
// to avoid sound level bursts in user's ears:
// - always attenuate ring tones and notifications volume by 6dB
// - if music is playing, always limit the volume to current music volume,
// with a minimum threshold at -36dB so that notification is always perceived.
const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream);
if ((device & (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP |
AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
AUDIO_DEVICE_OUT_WIRED_HEADSET |
AUDIO_DEVICE_OUT_WIRED_HEADPHONE)) &&
((stream_strategy == STRATEGY_SONIFICATION)
|| (stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL)
|| (stream == AudioSystem::SYSTEM)
|| ((stream_strategy == STRATEGY_ENFORCED_AUDIBLE) &&
(mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_NONE))) &&
streamDesc.mCanBeMuted) {
volume *= SONIFICATION_HEADSET_VOLUME_FACTOR;
// when the phone is ringing we must consider that music could have been paused just before
// by the music application and behave as if music was active if the last music track was
// just stopped
if (isStreamActive(AudioSystem::MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY) ||
mLimitRingtoneVolume) {
audio_devices_t musicDevice = getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/);
float musicVol = computeVolume(AudioSystem::MUSIC,
mStreams[AudioSystem::MUSIC].getVolumeIndex(musicDevice),
output,
musicDevice);
float minVol = (musicVol > SONIFICATION_HEADSET_VOLUME_MIN) ?
musicVol : SONIFICATION_HEADSET_VOLUME_MIN;
if (volume > minVol) {
volume = minVol;
ALOGV("computeVolume limiting volume to %f musicVol %f", minVol, musicVol);
}
}
}
return volume;
}
status_t AudioPolicyManagerBase::checkAndSetVolume(int stream,
int index,
audio_io_handle_t output,
audio_devices_t device,
int delayMs,
bool force)
{
// do not change actual stream volume if the stream is muted
if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) {
ALOGVV("checkAndSetVolume() stream %d muted count %d",
stream, mOutputs.valueFor(output)->mMuteCount[stream]);
return NO_ERROR;
}
// do not change in call volume if bluetooth is connected and vice versa
if ((stream == AudioSystem::VOICE_CALL && mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) ||
(stream == AudioSystem::BLUETOOTH_SCO && mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO)) {
ALOGV("checkAndSetVolume() cannot set stream %d volume with force use = %d for comm",
stream, mForceUse[AudioSystem::FOR_COMMUNICATION]);
return INVALID_OPERATION;
}
float volume = computeVolume(stream, index, output, device);
// We actually change the volume if:
// - the float value returned by computeVolume() changed
// - the force flag is set
if (volume != mOutputs.valueFor(output)->mCurVolume[stream] ||
force) {
mOutputs.valueFor(output)->mCurVolume[stream] = volume;
ALOGVV("checkAndSetVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs);
// Force VOICE_CALL to track BLUETOOTH_SCO stream volume when bluetooth audio is
// enabled
if (stream == AudioSystem::BLUETOOTH_SCO) {
mpClientInterface->setStreamVolume(AudioSystem::VOICE_CALL, volume, output, delayMs);
}
mpClientInterface->setStreamVolume((AudioSystem::stream_type)stream, volume, output, delayMs);
}
if (stream == AudioSystem::VOICE_CALL ||
stream == AudioSystem::BLUETOOTH_SCO) {
float voiceVolume;
// Force voice volume to max for bluetooth SCO as volume is managed by the headset
if (stream == AudioSystem::VOICE_CALL) {
voiceVolume = (float)index/(float)mStreams[stream].mIndexMax;
} else {
voiceVolume = 1.0;
}
if (voiceVolume != mLastVoiceVolume && output == mPrimaryOutput) {
mpClientInterface->setVoiceVolume(voiceVolume, delayMs);
mLastVoiceVolume = voiceVolume;
}
}
return NO_ERROR;
}
void AudioPolicyManagerBase::applyStreamVolumes(audio_io_handle_t output,
audio_devices_t device,
int delayMs,
bool force)
{
ALOGVV("applyStreamVolumes() for output %d and device %x", output, device);
for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
checkAndSetVolume(stream,
mStreams[stream].getVolumeIndex(device),
output,
device,
delayMs,
force);
}
}
void AudioPolicyManagerBase::setStrategyMute(routing_strategy strategy,
bool on,
audio_io_handle_t output,
int delayMs,
audio_devices_t device)
{
ALOGVV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output);
for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
if (getStrategy((AudioSystem::stream_type)stream) == strategy) {
setStreamMute(stream, on, output, delayMs, device);
}
}
}
void AudioPolicyManagerBase::setStreamMute(int stream,
bool on,
audio_io_handle_t output,
int delayMs,
audio_devices_t device)
{
StreamDescriptor &streamDesc = mStreams[stream];
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
if (device == AUDIO_DEVICE_NONE) {
device = outputDesc->device();
}
ALOGVV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d device %04x",
stream, on, output, outputDesc->mMuteCount[stream], device);
if (on) {
if (outputDesc->mMuteCount[stream] == 0) {
if (streamDesc.mCanBeMuted &&
((stream != AudioSystem::ENFORCED_AUDIBLE) ||
(mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_NONE))) {
checkAndSetVolume(stream, 0, output, device, delayMs);
}
}
// increment mMuteCount after calling checkAndSetVolume() so that volume change is not ignored
outputDesc->mMuteCount[stream]++;
} else {
if (outputDesc->mMuteCount[stream] == 0) {
ALOGV("setStreamMute() unmuting non muted stream!");
return;
}
if (--outputDesc->mMuteCount[stream] == 0) {
checkAndSetVolume(stream,
streamDesc.getVolumeIndex(device),
output,
device,
delayMs);
}
}
}
void AudioPolicyManagerBase::handleIncallSonification(int stream, bool starting, bool stateChange)
{
// if the stream pertains to sonification strategy and we are in call we must
// mute the stream if it is low visibility. If it is high visibility, we must play a tone
// in the device used for phone strategy and play the tone if the selected device does not
// interfere with the device used for phone strategy
// if stateChange is true, we are called from setPhoneState() and we must mute or unmute as
// many times as there are active tracks on the output
const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream);
if ((stream_strategy == STRATEGY_SONIFICATION) ||
((stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL))) {
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mPrimaryOutput);
ALOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d",
stream, starting, outputDesc->mDevice, stateChange);
if (outputDesc->mRefCount[stream]) {
int muteCount = 1;
if (stateChange) {
muteCount = outputDesc->mRefCount[stream];
}
if (AudioSystem::isLowVisibility((AudioSystem::stream_type)stream)) {
ALOGV("handleIncallSonification() low visibility, muteCount %d", muteCount);
for (int i = 0; i < muteCount; i++) {
setStreamMute(stream, starting, mPrimaryOutput);
}
} else {
ALOGV("handleIncallSonification() high visibility");
if (outputDesc->device() &
getDeviceForStrategy(STRATEGY_PHONE, true /*fromCache*/)) {
ALOGV("handleIncallSonification() high visibility muted, muteCount %d", muteCount);
for (int i = 0; i < muteCount; i++) {
setStreamMute(stream, starting, mPrimaryOutput);
}
}
if (starting) {
mpClientInterface->startTone(ToneGenerator::TONE_SUP_CALL_WAITING, AudioSystem::VOICE_CALL);
} else {
mpClientInterface->stopTone();
}
}
}
}
}
bool AudioPolicyManagerBase::isInCall()
{
return isStateInCall(mPhoneState);
}
bool AudioPolicyManagerBase::isStateInCall(int state) {
return ((state == AudioSystem::MODE_IN_CALL) ||
(state == AudioSystem::MODE_IN_COMMUNICATION));
}
uint32_t AudioPolicyManagerBase::getMaxEffectsCpuLoad()
{
return MAX_EFFECTS_CPU_LOAD;
}
uint32_t AudioPolicyManagerBase::getMaxEffectsMemory()
{
return MAX_EFFECTS_MEMORY;
}
// --- AudioOutputDescriptor class implementation
AudioPolicyManagerBase::AudioOutputDescriptor::AudioOutputDescriptor(
const IOProfile *profile)
: mId(0), mSamplingRate(0), mFormat(AUDIO_FORMAT_DEFAULT),
mChannelMask(0), mLatency(0),
mFlags((audio_output_flags_t)0), mDevice(AUDIO_DEVICE_NONE),
mOutput1(0), mOutput2(0), mProfile(profile), mDirectOpenCount(0),
mForceRouting(false)
{
// clear usage count for all stream types
for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
mRefCount[i] = 0;
mCurVolume[i] = -1.0;
mMuteCount[i] = 0;
mStopTime[i] = 0;
}
for (int i = 0; i < NUM_STRATEGIES; i++) {
mStrategyMutedByDevice[i] = false;
}
if (profile != NULL) {
mSamplingRate = profile->mSamplingRates[0];
mFormat = profile->mFormats[0];
mChannelMask = profile->mChannelMasks[0];
mFlags = profile->mFlags;
}
}
audio_devices_t AudioPolicyManagerBase::AudioOutputDescriptor::device() const
{
if (isDuplicated()) {
return (audio_devices_t)(mOutput1->mDevice | mOutput2->mDevice);
} else {
return mDevice;
}
}
uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::latency()
{
if (isDuplicated()) {
return (mOutput1->mLatency > mOutput2->mLatency) ? mOutput1->mLatency : mOutput2->mLatency;
} else {
return mLatency;
}
}
bool AudioPolicyManagerBase::AudioOutputDescriptor::sharesHwModuleWith(
const AudioOutputDescriptor *outputDesc)
{
if (isDuplicated()) {
return mOutput1->sharesHwModuleWith(outputDesc) || mOutput2->sharesHwModuleWith(outputDesc);
} else if (outputDesc->isDuplicated()){
return sharesHwModuleWith(outputDesc->mOutput1) || sharesHwModuleWith(outputDesc->mOutput2);
} else {
return (mProfile->mModule == outputDesc->mProfile->mModule);
}
}
void AudioPolicyManagerBase::AudioOutputDescriptor::changeRefCount(AudioSystem::stream_type stream, int delta)
{
// forward usage count change to attached outputs
if (isDuplicated()) {
mOutput1->changeRefCount(stream, delta);
mOutput2->changeRefCount(stream, delta);
}
if ((delta + (int)mRefCount[stream]) < 0) {
ALOGW("changeRefCount() invalid delta %d for stream %d, refCount %d", delta, stream, mRefCount[stream]);
mRefCount[stream] = 0;
return;
}
mRefCount[stream] += delta;
ALOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]);
}
audio_devices_t AudioPolicyManagerBase::AudioOutputDescriptor::supportedDevices()
{
if (isDuplicated()) {
return (audio_devices_t)(mOutput1->supportedDevices() | mOutput2->supportedDevices());
} else {
return mProfile->mSupportedDevices ;
}
}
bool AudioPolicyManagerBase::AudioOutputDescriptor::isActive(uint32_t inPastMs) const
{
return isStrategyActive(NUM_STRATEGIES, inPastMs);
}
bool AudioPolicyManagerBase::AudioOutputDescriptor::isStrategyActive(routing_strategy strategy,
uint32_t inPastMs,
nsecs_t sysTime) const
{
if ((sysTime == 0) && (inPastMs != 0)) {
sysTime = systemTime();
}
for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
if (((getStrategy((AudioSystem::stream_type)i) == strategy) ||
(NUM_STRATEGIES == strategy)) &&
isStreamActive((AudioSystem::stream_type)i, inPastMs, sysTime)) {
return true;
}
}
return false;
}
bool AudioPolicyManagerBase::AudioOutputDescriptor::isStreamActive(AudioSystem::stream_type stream,
uint32_t inPastMs,
nsecs_t sysTime) const
{
if (mRefCount[stream] != 0) {
return true;
}
if (inPastMs == 0) {
return false;
}
if (sysTime == 0) {
sysTime = systemTime();
}
if (ns2ms(sysTime - mStopTime[stream]) < inPastMs) {
return true;
}
return false;
}
status_t AudioPolicyManagerBase::AudioOutputDescriptor::dump(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
result.append(buffer);
snprintf(buffer, SIZE, " Format: %08x\n", mFormat);
result.append(buffer);
snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask);
result.append(buffer);
snprintf(buffer, SIZE, " Latency: %d\n", mLatency);
result.append(buffer);
snprintf(buffer, SIZE, " Flags %08x\n", mFlags);
result.append(buffer);
snprintf(buffer, SIZE, " Devices %08x\n", device());
result.append(buffer);
snprintf(buffer, SIZE, " Stream volume refCount muteCount\n");
result.append(buffer);
for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
snprintf(buffer, SIZE, " %02d %.03f %02d %02d\n", i, mCurVolume[i], mRefCount[i], mMuteCount[i]);
result.append(buffer);
}
write(fd, result.string(), result.size());
return NO_ERROR;
}
// --- AudioInputDescriptor class implementation
AudioPolicyManagerBase::AudioInputDescriptor::AudioInputDescriptor(const IOProfile *profile)
: mId(0), mSamplingRate(0), mFormat(AUDIO_FORMAT_DEFAULT), mChannelMask(0),
mDevice(AUDIO_DEVICE_NONE), mRefCount(0),
mInputSource(0), mProfile(profile)
{
if (profile != NULL) {
mSamplingRate = profile->mSamplingRates[0];
mFormat = profile->mFormats[0];
mChannelMask = profile->mChannelMasks[0];
}
}
status_t AudioPolicyManagerBase::AudioInputDescriptor::dump(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
result.append(buffer);
snprintf(buffer, SIZE, " Format: %d\n", mFormat);
result.append(buffer);
snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask);
result.append(buffer);
snprintf(buffer, SIZE, " Devices %08x\n", mDevice);
result.append(buffer);
snprintf(buffer, SIZE, " Ref Count %d\n", mRefCount);
result.append(buffer);
write(fd, result.string(), result.size());
return NO_ERROR;
}
// --- StreamDescriptor class implementation
AudioPolicyManagerBase::StreamDescriptor::StreamDescriptor()
: mIndexMin(0), mIndexMax(1), mCanBeMuted(true)
{
mIndexCur.add(AUDIO_DEVICE_OUT_DEFAULT, 0);
}
int AudioPolicyManagerBase::StreamDescriptor::getVolumeIndex(audio_devices_t device)
{
device = AudioPolicyManagerBase::getDeviceForVolume(device);
// there is always a valid entry for AUDIO_DEVICE_OUT_DEFAULT
if (mIndexCur.indexOfKey(device) < 0) {
device = AUDIO_DEVICE_OUT_DEFAULT;
}
return mIndexCur.valueFor(device);
}
void AudioPolicyManagerBase::StreamDescriptor::dump(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, "%s %02d %02d ",
mCanBeMuted ? "true " : "false", mIndexMin, mIndexMax);
result.append(buffer);
for (size_t i = 0; i < mIndexCur.size(); i++) {
snprintf(buffer, SIZE, "%04x : %02d, ",
mIndexCur.keyAt(i),
mIndexCur.valueAt(i));
result.append(buffer);
}
result.append("\n");
write(fd, result.string(), result.size());
}
// --- EffectDescriptor class implementation
status_t AudioPolicyManagerBase::EffectDescriptor::dump(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, " I/O: %d\n", mIo);
result.append(buffer);
snprintf(buffer, SIZE, " Strategy: %d\n", mStrategy);
result.append(buffer);
snprintf(buffer, SIZE, " Session: %d\n", mSession);
result.append(buffer);
snprintf(buffer, SIZE, " Name: %s\n", mDesc.name);
result.append(buffer);
snprintf(buffer, SIZE, " %s\n", mEnabled ? "Enabled" : "Disabled");
result.append(buffer);
write(fd, result.string(), result.size());
return NO_ERROR;
}
// --- IOProfile class implementation
AudioPolicyManagerBase::HwModule::HwModule(const char *name)
: mName(strndup(name, AUDIO_HARDWARE_MODULE_ID_MAX_LEN)), mHandle(AUDIO_MODULE_HANDLE_NONE)
{
}
AudioPolicyManagerBase::HwModule::~HwModule()
{
for (size_t i = 0; i < mOutputProfiles.size(); i++) {
delete mOutputProfiles[i];
}
for (size_t i = 0; i < mInputProfiles.size(); i++) {
delete mInputProfiles[i];
}
free((void *)mName);
}
void AudioPolicyManagerBase::HwModule::dump(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, " - name: %s\n", mName);
result.append(buffer);
snprintf(buffer, SIZE, " - handle: %d\n", mHandle);
result.append(buffer);
write(fd, result.string(), result.size());
if (mOutputProfiles.size()) {
write(fd, " - outputs:\n", strlen(" - outputs:\n"));
for (size_t i = 0; i < mOutputProfiles.size(); i++) {
snprintf(buffer, SIZE, " output %zu:\n", i);
write(fd, buffer, strlen(buffer));
mOutputProfiles[i]->dump(fd);
}
}
if (mInputProfiles.size()) {
write(fd, " - inputs:\n", strlen(" - inputs:\n"));
for (size_t i = 0; i < mInputProfiles.size(); i++) {
snprintf(buffer, SIZE, " input %zu:\n", i);
write(fd, buffer, strlen(buffer));
mInputProfiles[i]->dump(fd);
}
}
}
AudioPolicyManagerBase::IOProfile::IOProfile(HwModule *module)
: mFlags((audio_output_flags_t)0), mModule(module)
{
}
AudioPolicyManagerBase::IOProfile::~IOProfile()
{
}
// checks if the IO profile is compatible with specified parameters.
// Sampling rate, format and channel mask must be specified in order to
// get a valid a match
bool AudioPolicyManagerBase::IOProfile::isCompatibleProfile(audio_devices_t device,
uint32_t samplingRate,
audio_format_t format,
audio_channel_mask_t channelMask,
audio_output_flags_t flags) const
{
if (samplingRate == 0 || !audio_is_valid_format(format) || channelMask == 0) {
return false;
}
if ((mSupportedDevices & device) != device) {
return false;
}
if ((mFlags & flags) != flags) {
return false;
}
size_t i;
for (i = 0; i < mSamplingRates.size(); i++)
{
if (mSamplingRates[i] == samplingRate) {
break;
}
}
if (i == mSamplingRates.size()) {
return false;
}
for (i = 0; i < mFormats.size(); i++)
{
if (mFormats[i] == format) {
break;
}
}
if (i == mFormats.size()) {
return false;
}
for (i = 0; i < mChannelMasks.size(); i++)
{
if (mChannelMasks[i] == channelMask) {
break;
}
}
if (i == mChannelMasks.size()) {
return false;
}
return true;
}
void AudioPolicyManagerBase::IOProfile::dump(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, " - sampling rates: ");
result.append(buffer);
for (size_t i = 0; i < mSamplingRates.size(); i++) {
snprintf(buffer, SIZE, "%d", mSamplingRates[i]);
result.append(buffer);
result.append(i == (mSamplingRates.size() - 1) ? "\n" : ", ");
}
snprintf(buffer, SIZE, " - channel masks: ");
result.append(buffer);
for (size_t i = 0; i < mChannelMasks.size(); i++) {
snprintf(buffer, SIZE, "0x%04x", mChannelMasks[i]);
result.append(buffer);
result.append(i == (mChannelMasks.size() - 1) ? "\n" : ", ");
}
snprintf(buffer, SIZE, " - formats: ");
result.append(buffer);
for (size_t i = 0; i < mFormats.size(); i++) {
snprintf(buffer, SIZE, "0x%08x", mFormats[i]);
result.append(buffer);
result.append(i == (mFormats.size() - 1) ? "\n" : ", ");
}
snprintf(buffer, SIZE, " - devices: 0x%04x\n", mSupportedDevices);
result.append(buffer);
snprintf(buffer, SIZE, " - flags: 0x%04x\n", mFlags);
result.append(buffer);
write(fd, result.string(), result.size());
}
void AudioPolicyManagerBase::IOProfile::log()
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
ALOGV(" - sampling rates: ");
for (size_t i = 0; i < mSamplingRates.size(); i++) {
ALOGV(" %d", mSamplingRates[i]);
}
ALOGV(" - channel masks: ");
for (size_t i = 0; i < mChannelMasks.size(); i++) {
ALOGV(" 0x%04x", mChannelMasks[i]);
}
ALOGV(" - formats: ");
for (size_t i = 0; i < mFormats.size(); i++) {
ALOGV(" 0x%08x", mFormats[i]);
}
ALOGV(" - devices: 0x%04x\n", mSupportedDevices);
ALOGV(" - flags: 0x%04x\n", mFlags);
}
// --- audio_policy.conf file parsing
struct StringToEnum {
const char *name;
uint32_t value;
};
#define STRING_TO_ENUM(string) { #string, string }
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
const struct StringToEnum sDeviceNameToEnumTable[] = {
STRING_TO_ENUM(AUDIO_DEVICE_OUT_EARPIECE),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPEAKER),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADSET),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADPHONE),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_SCO),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_A2DP),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_DIGITAL),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_DEVICE),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_ACCESSORY),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_USB),
STRING_TO_ENUM(AUDIO_DEVICE_OUT_REMOTE_SUBMIX),
STRING_TO_ENUM(AUDIO_DEVICE_IN_BUILTIN_MIC),
STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET),
STRING_TO_ENUM(AUDIO_DEVICE_IN_WIRED_HEADSET),
STRING_TO_ENUM(AUDIO_DEVICE_IN_AUX_DIGITAL),
STRING_TO_ENUM(AUDIO_DEVICE_IN_VOICE_CALL),
STRING_TO_ENUM(AUDIO_DEVICE_IN_BACK_MIC),
STRING_TO_ENUM(AUDIO_DEVICE_IN_REMOTE_SUBMIX),
STRING_TO_ENUM(AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET),
STRING_TO_ENUM(AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET),
STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_ACCESSORY),
STRING_TO_ENUM(AUDIO_DEVICE_IN_USB_DEVICE),
STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_A2DP),
};
const struct StringToEnum sFlagNameToEnumTable[] = {
STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DIRECT),
STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_PRIMARY),
STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_FAST),
STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DEEP_BUFFER),
STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD),
STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_NON_BLOCKING),
};
const struct StringToEnum sFormatNameToEnumTable[] = {
STRING_TO_ENUM(AUDIO_FORMAT_PCM_16_BIT),
STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_BIT),
STRING_TO_ENUM(AUDIO_FORMAT_PCM_32_BIT),
STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_24_BIT),
STRING_TO_ENUM(AUDIO_FORMAT_PCM_FLOAT),
STRING_TO_ENUM(AUDIO_FORMAT_PCM_24_BIT_PACKED),
STRING_TO_ENUM(AUDIO_FORMAT_MP3),
STRING_TO_ENUM(AUDIO_FORMAT_AAC),
STRING_TO_ENUM(AUDIO_FORMAT_VORBIS),
STRING_TO_ENUM(AUDIO_FORMAT_HE_AAC_V1),
STRING_TO_ENUM(AUDIO_FORMAT_HE_AAC_V2),
STRING_TO_ENUM(AUDIO_FORMAT_OPUS),
STRING_TO_ENUM(AUDIO_FORMAT_AC3),
STRING_TO_ENUM(AUDIO_FORMAT_E_AC3),
};
const struct StringToEnum sOutChannelsNameToEnumTable[] = {
STRING_TO_ENUM(AUDIO_CHANNEL_OUT_MONO),
STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO),
STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1),
STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1),
};
const struct StringToEnum sInChannelsNameToEnumTable[] = {
STRING_TO_ENUM(AUDIO_CHANNEL_IN_MONO),
STRING_TO_ENUM(AUDIO_CHANNEL_IN_STEREO),
STRING_TO_ENUM(AUDIO_CHANNEL_IN_FRONT_BACK),
};
uint32_t AudioPolicyManagerBase::stringToEnum(const struct StringToEnum *table,
size_t size,
const char *name)
{
for (size_t i = 0; i < size; i++) {
if (strcmp(table[i].name, name) == 0) {
ALOGV("stringToEnum() found %s", table[i].name);
return table[i].value;
}
}
return 0;
}
bool AudioPolicyManagerBase::stringToBool(const char *value)
{
return ((strcasecmp("true", value) == 0) || (strcmp("1", value) == 0));
}
audio_output_flags_t AudioPolicyManagerBase::parseFlagNames(char *name)
{
uint32_t flag = 0;
// it is OK to cast name to non const here as we are not going to use it after
// strtok() modifies it
char *flagName = strtok(name, "|");
while (flagName != NULL) {
if (strlen(flagName) != 0) {
flag |= stringToEnum(sFlagNameToEnumTable,
ARRAY_SIZE(sFlagNameToEnumTable),
flagName);
}
flagName = strtok(NULL, "|");
}
//force direct flag if offload flag is set: offloading implies a direct output stream
// and all common behaviors are driven by checking only the direct flag
// this should normally be set appropriately in the policy configuration file
if ((flag & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
flag |= AUDIO_OUTPUT_FLAG_DIRECT;
}
return (audio_output_flags_t)flag;
}
audio_devices_t AudioPolicyManagerBase::parseDeviceNames(char *name)
{
uint32_t device = 0;
char *devName = strtok(name, "|");
while (devName != NULL) {
if (strlen(devName) != 0) {
device |= stringToEnum(sDeviceNameToEnumTable,
ARRAY_SIZE(sDeviceNameToEnumTable),
devName);
}
devName = strtok(NULL, "|");
}
return device;
}
void AudioPolicyManagerBase::loadSamplingRates(char *name, IOProfile *profile)
{
char *str = strtok(name, "|");
// by convention, "0' in the first entry in mSamplingRates indicates the supported sampling
// rates should be read from the output stream after it is opened for the first time
if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
profile->mSamplingRates.add(0);
return;
}
while (str != NULL) {
uint32_t rate = atoi(str);
if (rate != 0) {
ALOGV("loadSamplingRates() adding rate %d", rate);
profile->mSamplingRates.add(rate);
}
str = strtok(NULL, "|");
}
return;
}
void AudioPolicyManagerBase::loadFormats(char *name, IOProfile *profile)
{
char *str = strtok(name, "|");
// by convention, "0' in the first entry in mFormats indicates the supported formats
// should be read from the output stream after it is opened for the first time
if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
profile->mFormats.add(AUDIO_FORMAT_DEFAULT);
return;
}
while (str != NULL) {
audio_format_t format = (audio_format_t)stringToEnum(sFormatNameToEnumTable,
ARRAY_SIZE(sFormatNameToEnumTable),
str);
if (format != AUDIO_FORMAT_DEFAULT) {
profile->mFormats.add(format);
}
str = strtok(NULL, "|");
}
return;
}
void AudioPolicyManagerBase::loadInChannels(char *name, IOProfile *profile)
{
const char *str = strtok(name, "|");
ALOGV("loadInChannels() %s", name);
if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
profile->mChannelMasks.add(0);
return;
}
while (str != NULL) {
audio_channel_mask_t channelMask =
(audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable,
ARRAY_SIZE(sInChannelsNameToEnumTable),
str);
if (channelMask != 0) {
ALOGV("loadInChannels() adding channelMask %04x", channelMask);
profile->mChannelMasks.add(channelMask);
}
str = strtok(NULL, "|");
}
return;
}
void AudioPolicyManagerBase::loadOutChannels(char *name, IOProfile *profile)
{
const char *str = strtok(name, "|");
ALOGV("loadOutChannels() %s", name);
// by convention, "0' in the first entry in mChannelMasks indicates the supported channel
// masks should be read from the output stream after it is opened for the first time
if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) {
profile->mChannelMasks.add(0);
return;
}
while (str != NULL) {
audio_channel_mask_t channelMask =
(audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable,
ARRAY_SIZE(sOutChannelsNameToEnumTable),
str);
if (channelMask != 0) {
profile->mChannelMasks.add(channelMask);
}
str = strtok(NULL, "|");
}
return;
}
status_t AudioPolicyManagerBase::loadInput(cnode *root, HwModule *module)
{
cnode *node = root->first_child;
IOProfile *profile = new IOProfile(module);
while (node) {
if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) {
loadSamplingRates((char *)node->value, profile);
} else if (strcmp(node->name, FORMATS_TAG) == 0) {
loadFormats((char *)node->value, profile);
} else if (strcmp(node->name, CHANNELS_TAG) == 0) {
loadInChannels((char *)node->value, profile);
} else if (strcmp(node->name, DEVICES_TAG) == 0) {
profile->mSupportedDevices = parseDeviceNames((char *)node->value);
}
node = node->next;
}
ALOGW_IF(profile->mSupportedDevices == AUDIO_DEVICE_NONE,
"loadInput() invalid supported devices");
ALOGW_IF(profile->mChannelMasks.size() == 0,
"loadInput() invalid supported channel masks");
ALOGW_IF(profile->mSamplingRates.size() == 0,
"loadInput() invalid supported sampling rates");
ALOGW_IF(profile->mFormats.size() == 0,
"loadInput() invalid supported formats");
if ((profile->mSupportedDevices != AUDIO_DEVICE_NONE) &&
(profile->mChannelMasks.size() != 0) &&
(profile->mSamplingRates.size() != 0) &&
(profile->mFormats.size() != 0)) {
ALOGV("loadInput() adding input mSupportedDevices 0x%X", profile->mSupportedDevices);
module->mInputProfiles.add(profile);
return NO_ERROR;
} else {
delete profile;
return BAD_VALUE;
}
}
status_t AudioPolicyManagerBase::loadOutput(cnode *root, HwModule *module)
{
cnode *node = root->first_child;
IOProfile *profile = new IOProfile(module);
while (node) {
if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) {
loadSamplingRates((char *)node->value, profile);
} else if (strcmp(node->name, FORMATS_TAG) == 0) {
loadFormats((char *)node->value, profile);
} else if (strcmp(node->name, CHANNELS_TAG) == 0) {
loadOutChannels((char *)node->value, profile);
} else if (strcmp(node->name, DEVICES_TAG) == 0) {
profile->mSupportedDevices = parseDeviceNames((char *)node->value);
} else if (strcmp(node->name, FLAGS_TAG) == 0) {
profile->mFlags = parseFlagNames((char *)node->value);
}
node = node->next;
}
ALOGW_IF(profile->mSupportedDevices == AUDIO_DEVICE_NONE,
"loadOutput() invalid supported devices");
ALOGW_IF(profile->mChannelMasks.size() == 0,
"loadOutput() invalid supported channel masks");
ALOGW_IF(profile->mSamplingRates.size() == 0,
"loadOutput() invalid supported sampling rates");
ALOGW_IF(profile->mFormats.size() == 0,
"loadOutput() invalid supported formats");
if ((profile->mSupportedDevices != AUDIO_DEVICE_NONE) &&
(profile->mChannelMasks.size() != 0) &&
(profile->mSamplingRates.size() != 0) &&
(profile->mFormats.size() != 0)) {
ALOGV("loadOutput() adding output mSupportedDevices %04x, mFlags %04x",
profile->mSupportedDevices, profile->mFlags);
module->mOutputProfiles.add(profile);
return NO_ERROR;
} else {
delete profile;
return BAD_VALUE;
}
}
void AudioPolicyManagerBase::loadHwModule(cnode *root)
{
cnode *node = config_find(root, OUTPUTS_TAG);
status_t status = NAME_NOT_FOUND;
HwModule *module = new HwModule(root->name);
if (node != NULL) {
if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_A2DP) == 0) {
mHasA2dp = true;
} else if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_USB) == 0) {
mHasUsb = true;
} else if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX) == 0) {
mHasRemoteSubmix = true;
}
node = node->first_child;
while (node) {
ALOGV("loadHwModule() loading output %s", node->name);
status_t tmpStatus = loadOutput(node, module);
if (status == NAME_NOT_FOUND || status == NO_ERROR) {
status = tmpStatus;
}
node = node->next;
}
}
node = config_find(root, INPUTS_TAG);
if (node != NULL) {
node = node->first_child;
while (node) {
ALOGV("loadHwModule() loading input %s", node->name);
status_t tmpStatus = loadInput(node, module);
if (status == NAME_NOT_FOUND || status == NO_ERROR) {
status = tmpStatus;
}
node = node->next;
}
}
if (status == NO_ERROR) {
mHwModules.add(module);
} else {
delete module;
}
}
void AudioPolicyManagerBase::loadHwModules(cnode *root)
{
cnode *node = config_find(root, AUDIO_HW_MODULE_TAG);
if (node == NULL) {
return;
}
node = node->first_child;
while (node) {
ALOGV("loadHwModules() loading module %s", node->name);
loadHwModule(node);
node = node->next;
}
}
void AudioPolicyManagerBase::loadGlobalConfig(cnode *root)
{
cnode *node = config_find(root, GLOBAL_CONFIG_TAG);
if (node == NULL) {
return;
}
node = node->first_child;
while (node) {
if (strcmp(ATTACHED_OUTPUT_DEVICES_TAG, node->name) == 0) {
mAttachedOutputDevices = parseDeviceNames((char *)node->value);
ALOGW_IF(mAttachedOutputDevices == AUDIO_DEVICE_NONE,
"loadGlobalConfig() no attached output devices");
ALOGV("loadGlobalConfig() mAttachedOutputDevices %04x", mAttachedOutputDevices);
} else if (strcmp(DEFAULT_OUTPUT_DEVICE_TAG, node->name) == 0) {
mDefaultOutputDevice = (audio_devices_t)stringToEnum(sDeviceNameToEnumTable,
ARRAY_SIZE(sDeviceNameToEnumTable),
(char *)node->value);
ALOGW_IF(mDefaultOutputDevice == AUDIO_DEVICE_NONE,
"loadGlobalConfig() default device not specified");
ALOGV("loadGlobalConfig() mDefaultOutputDevice %04x", mDefaultOutputDevice);
} else if (strcmp(ATTACHED_INPUT_DEVICES_TAG, node->name) == 0) {
mAvailableInputDevices = parseDeviceNames((char *)node->value) & ~AUDIO_DEVICE_BIT_IN;
ALOGV("loadGlobalConfig() mAvailableInputDevices %04x", mAvailableInputDevices);
} else if (strcmp(SPEAKER_DRC_ENABLED_TAG, node->name) == 0) {
mSpeakerDrcEnabled = stringToBool((char *)node->value);
ALOGV("loadGlobalConfig() mSpeakerDrcEnabled = %d", mSpeakerDrcEnabled);
}
node = node->next;
}
}
status_t AudioPolicyManagerBase::loadAudioPolicyConfig(const char *path)
{
cnode *root;
char *data;
data = (char *)load_file(path, NULL);
if (data == NULL) {
return -ENODEV;
}
root = config_node("", "");
config_load(root, data);
loadGlobalConfig(root);
loadHwModules(root);
config_free(root);
free(root);
free(data);
ALOGI("loadAudioPolicyConfig() loaded %s\n", path);
return NO_ERROR;
}
void AudioPolicyManagerBase::defaultAudioPolicyConfig(void)
{
HwModule *module;
IOProfile *profile;
mDefaultOutputDevice = AUDIO_DEVICE_OUT_SPEAKER;
mAttachedOutputDevices = AUDIO_DEVICE_OUT_SPEAKER;
mAvailableInputDevices = AUDIO_DEVICE_IN_BUILTIN_MIC & ~AUDIO_DEVICE_BIT_IN;
module = new HwModule("primary");
profile = new IOProfile(module);
profile->mSamplingRates.add(44100);
profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT);
profile->mChannelMasks.add(AUDIO_CHANNEL_OUT_STEREO);
profile->mSupportedDevices = AUDIO_DEVICE_OUT_SPEAKER;
profile->mFlags = AUDIO_OUTPUT_FLAG_PRIMARY;
module->mOutputProfiles.add(profile);
profile = new IOProfile(module);
profile->mSamplingRates.add(8000);
profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT);
profile->mChannelMasks.add(AUDIO_CHANNEL_IN_MONO);
profile->mSupportedDevices = AUDIO_DEVICE_IN_BUILTIN_MIC;
module->mInputProfiles.add(profile);
mHwModules.add(module);
}
}; // namespace android