tequilaOS/platform_hardware_libhardware_legacy
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
platform_hardware_libhardwa.../audio/AudioPolicyManagerBase.cpp
Eric Laurent 08b014d9e5 audio policy: use common string for A2DP address 
Use definition from audio.h for A2DP sink address parameter.

Change-Id: I2d7905b8e3dd71fab2efc68ae16682e09c3f872e
2012-03-07 19:04:55 -08:00

2557 lines
99 KiB
C++
Raw Blame History

/*
* 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
#include <utils/Log.h>
#include <hardware_legacy/AudioPolicyManagerBase.h>
#include <hardware/audio_effect.h>
#include <hardware/audio.h>
#include <math.h>
namespace android_audio_legacy {
// ----------------------------------------------------------------------------
// AudioPolicyInterface implementation
// ----------------------------------------------------------------------------
////////////////////
// TODO: the following static configuration will be read from a configuration file
// sHasA2dp is true on platforms with support for bluetooth A2DP
bool sHasA2dp = true;
// devices that are always available on the platform
audio_devices_t sAttachedOutputDevices =
(audio_devices_t)(AUDIO_DEVICE_OUT_EARPIECE | AUDIO_DEVICE_OUT_SPEAKER);
// device selected by default at boot time must be in sAttachedOutputDevices
audio_devices_t sDefaultOutputDevice = AUDIO_DEVICE_OUT_SPEAKER;
uint32_t sSamplingRates[] = {44100, 0};
audio_channel_mask_t sChannels[] = {AUDIO_CHANNEL_OUT_STEREO, (audio_channel_mask_t)0};
audio_format_t sFormats[] = {AUDIO_FORMAT_PCM_16_BIT, (audio_format_t)0};
// the primary output (identified by AUDIO_POLICY_OUTPUT_FLAG_PRIMARY in its profile) must exist and
// is unique on a platform. It is the output receiving the routing and volume commands for telephony
// use cases. It is normally exposed by the primary audio hw module and opened at boot time by
// the audio policy manager.
const output_profile_t sPrimaryOutput = {
sSamplingRates,
sChannels,
sFormats,
(audio_devices_t)(AUDIO_DEVICE_OUT_EARPIECE |
AUDIO_DEVICE_OUT_SPEAKER |
AUDIO_DEVICE_OUT_WIRED_HEADSET |
AUDIO_DEVICE_OUT_WIRED_HEADPHONE |
AUDIO_DEVICE_OUT_ALL_SCO |
AUDIO_DEVICE_OUT_AUX_DIGITAL |
AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET),
AUDIO_POLICY_OUTPUT_FLAG_PRIMARY
};
const output_profile_t sA2dpOutput = {
sSamplingRates,
sChannels,
sFormats,
AUDIO_DEVICE_OUT_ALL_A2DP,
(audio_policy_output_flags_t)0
};
const output_profile_t *sAvailableOutputs[] = {
&sPrimaryOutput,
&sA2dpOutput,
NULL
};
///////////// end of temporary static configuration data
status_t AudioPolicyManagerBase::setDeviceConnectionState(AudioSystem::audio_devices device,
AudioSystem::device_connection_state state,
const char *device_address)
{
audio_io_handle_t output = 0;
ALOGV("setDeviceConnectionState() device: %x, state %d, address %s", device, state, device_address);
// connect/disconnect only 1 device at a time
if (AudioSystem::popCount(device) != 1) 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 (AudioSystem::isOutputDevice(device)) {
if (!sHasA2dp && AudioSystem::isA2dpDevice(device)) {
ALOGE("setDeviceConnectionState() invalid device: %x", device);
return BAD_VALUE;
}
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);
// register new device as available
mAvailableOutputDevices |= device;
output = checkOutputForDevice(device, state);
if (output == 0) {
mAvailableOutputDevices &= ~device;
return INVALID_OPERATION;
}
// handle A2DP device connection
if (sHasA2dp && AudioSystem::isA2dpDevice(device)) {
AudioParameter param;
param.add(String8(AUDIO_PARAMETER_A2DP_SINK_ADDRESS), String8(device_address));
mpClientInterface->setParameters(output, param.toString());
mA2dpDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
mA2dpSuspended = false;
} else if (AudioSystem::isBluetoothScoDevice(device)) {
ALOGV("setDeviceConnectionState() BT SCO device, address %s", device_address);
// keep track of SCO device address
mScoDeviceAddress = 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 &= ~device;
output = checkOutputForDevice(device, state);
// handle A2DP device disconnection
if (sHasA2dp && AudioSystem::isA2dpDevice(device)) {
mA2dpDeviceAddress = "";
mA2dpSuspended = false;
} else if (AudioSystem::isBluetoothScoDevice(device)) {
mScoDeviceAddress = "";
}
} break;
default:
ALOGE("setDeviceConnectionState() invalid state: %x", state);
return BAD_VALUE;
}
// request routing change if necessary
uint32_t newDevice = getNewDevice(mPrimaryOutput, false);
checkA2dpSuspend();
checkOutputForAllStrategies();
// outputs must be closed after checkOutputForAllStrategies() is executed
if (state == AudioSystem::DEVICE_STATE_UNAVAILABLE && output != 0) {
closeOutput(output);
}
updateDeviceForStrategy();
setOutputDevice(mPrimaryOutput, newDevice);
if (device == AudioSystem::DEVICE_OUT_WIRED_HEADSET) {
device = AudioSystem::DEVICE_IN_WIRED_HEADSET;
} else if (device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO ||
device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET ||
device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT) {
device = AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET;
} else {
return NO_ERROR;
}
}
// handle input devices
if (AudioSystem::isInputDevice(device)) {
switch (state)
{
// handle input device connection
case AudioSystem::DEVICE_STATE_AVAILABLE: {
if (mAvailableInputDevices & device) {
ALOGW("setDeviceConnectionState() device already connected: %d", device);
return INVALID_OPERATION;
}
mAvailableInputDevices |= device;
}
break;
// handle input device disconnection
case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
if (!(mAvailableInputDevices & device)) {
ALOGW("setDeviceConnectionState() device not connected: %d", device);
return INVALID_OPERATION;
}
mAvailableInputDevices &= ~device;
} break;
default:
ALOGE("setDeviceConnectionState() invalid state: %x", state);
return BAD_VALUE;
}
audio_io_handle_t activeInput = getActiveInput();
if (activeInput != 0) {
AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
uint32_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
if (newDevice != inputDesc->mDevice) {
ALOGV("setDeviceConnectionState() 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());
}
}
return NO_ERROR;
}
ALOGW("setDeviceConnectionState() invalid device: %x", device);
return BAD_VALUE;
}
AudioSystem::device_connection_state AudioPolicyManagerBase::getDeviceConnectionState(AudioSystem::audio_devices device,
const char *device_address)
{
AudioSystem::device_connection_state state = AudioSystem::DEVICE_STATE_UNAVAILABLE;
String8 address = String8(device_address);
if (AudioSystem::isOutputDevice(device)) {
if (device & mAvailableOutputDevices) {
if (AudioSystem::isA2dpDevice(device) &&
(!sHasA2dp || (address != "" && mA2dpDeviceAddress != address))) {
return state;
}
if (AudioSystem::isBluetoothScoDevice(device) &&
address != "" && mScoDeviceAddress != address) {
return state;
}
state = AudioSystem::DEVICE_STATE_AVAILABLE;
}
} else if (AudioSystem::isInputDevice(device)) {
if (device & mAvailableInputDevices) {
state = AudioSystem::DEVICE_STATE_AVAILABLE;
}
}
return state;
}
void AudioPolicyManagerBase::setPhoneState(int state)
{
ALOGV("setPhoneState() state %d", state);
uint32_t newDevice = 0;
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;
} 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;
} 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);
checkA2dpSuspend();
checkOutputForAllStrategies();
updateDeviceForStrategy();
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 == 0) {
newDevice = hwOutputDesc->device();
}
// when changing from ring tone to in call mode, mute the ringing tone
// immediately and delay the route change to avoid sending the ring tone
// tail into the earpiece or headset.
int delayMs = 0;
if (isStateInCall(state) && oldState == AudioSystem::MODE_RINGTONE) {
// delay the device change command by twice the output latency to have some margin
// and be sure that audio buffers not yet affected by the mute are out when
// we actually apply the route change
delayMs = hwOutputDesc->mLatency*2;
setStreamMute(AudioSystem::RING, true, mPrimaryOutput);
}
// 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);
// unmute the ringing tone after a sufficient delay if it was muted before
// setting output device above
if (oldState == AudioSystem::MODE_RINGTONE) {
setStreamMute(AudioSystem::RING, false, mPrimaryOutput, MUTE_TIME_MS);
}
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) {
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;
default:
ALOGW("setForceUse() invalid usage %d", usage);
break;
}
// check for device and output changes triggered by new phone state
uint32_t newDevice = getNewDevice(mPrimaryOutput, false);
checkA2dpSuspend();
checkOutputForAllStrategies();
updateDeviceForStrategy();
setOutputDevice(mPrimaryOutput, newDevice);
if (forceVolumeReeval) {
applyStreamVolumes(mPrimaryOutput, newDevice, 0, true);
}
audio_io_handle_t activeInput = getActiveInput();
if (activeInput != 0) {
AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
newDevice = getDeviceForInputSource(inputDesc->mInputSource);
if (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);
if (strcmp(property, "ro.camera.sound.forced") == 0) {
if (atoi(value)) {
ALOGV("ENFORCED_AUDIBLE cannot be muted");
mStreams[AudioSystem::ENFORCED_AUDIBLE].mCanBeMuted = false;
} else {
ALOGV("ENFORCED_AUDIBLE can be muted");
mStreams[AudioSystem::ENFORCED_AUDIBLE].mCanBeMuted = true;
}
}
}
audio_io_handle_t AudioPolicyManagerBase::getOutput(AudioSystem::stream_type stream,
uint32_t samplingRate,
uint32_t format,
uint32_t channels,
AudioSystem::output_flags flags)
{
audio_io_handle_t output = 0;
uint32_t latency = 0;
routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream);
uint32_t device = getDeviceForStrategy(strategy);
ALOGV("getOutput() stream %d, samplingRate %d, format %d, channels %x, flags %x", stream, samplingRate, format, channels, flags);
#ifdef AUDIO_POLICY_TEST
if (mCurOutput != 0) {
ALOGV("getOutput() test output mCurOutput %d, samplingRate %d, format %d, channels %x, mDirectOutput %d",
mCurOutput, mTestSamplingRate, mTestFormat, mTestChannels, mDirectOutput);
if (mTestOutputs[mCurOutput] == 0) {
ALOGV("getOutput() opening test output");
AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor();
outputDesc->mDevice = mTestDevice;
outputDesc->mSamplingRate = mTestSamplingRate;
outputDesc->mFormat = mTestFormat;
outputDesc->mChannels = mTestChannels;
outputDesc->mLatency = mTestLatencyMs;
outputDesc->mFlags = (AudioSystem::output_flags)(mDirectOutput ? AudioSystem::OUTPUT_FLAG_DIRECT : 0);
outputDesc->mRefCount[stream] = 0;
mTestOutputs[mCurOutput] = mpClientInterface->openOutput(&outputDesc->mDevice,
&outputDesc->mSamplingRate,
&outputDesc->mFormat,
&outputDesc->mChannels,
&outputDesc->mLatency,
outputDesc->mFlags);
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
if (needsDirectOuput(stream, samplingRate, format, channels, flags, device)) {
ALOGV("getOutput() opening direct output device %x", device);
AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL);
outputDesc->mDevice = device;
outputDesc->mSamplingRate = samplingRate;
outputDesc->mFormat = format;
outputDesc->mChannels = channels;
outputDesc->mLatency = 0;
outputDesc->mFlags = (AudioSystem::output_flags)(flags | AudioSystem::OUTPUT_FLAG_DIRECT);
outputDesc->mRefCount[stream] = 0;
outputDesc->mStopTime[stream] = 0;
output = mpClientInterface->openOutput(&outputDesc->mDevice,
&outputDesc->mSamplingRate,
&outputDesc->mFormat,
&outputDesc->mChannels,
&outputDesc->mLatency,
outputDesc->mFlags);
// only accept an output with the requeted parameters
if (output == 0 ||
(samplingRate != 0 && samplingRate != outputDesc->mSamplingRate) ||
(format != 0 && format != outputDesc->mFormat) ||
(channels != 0 && channels != outputDesc->mChannels)) {
ALOGV("getOutput() failed opening direct output: samplingRate %d, format %d, channels %d",
samplingRate, format, channels);
if (output != 0) {
mpClientInterface->closeOutput(output);
}
delete outputDesc;
return 0;
}
addOutput(output, outputDesc);
return output;
}
if (channels != 0 && channels != AudioSystem::CHANNEL_OUT_MONO &&
channels != AudioSystem::CHANNEL_OUT_STEREO) {
return 0;
}
// open a non direct output
// 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);
// TODO: current implementation assumes that at most one output corresponds to a device.
// this will change when supporting low power, low latency or tunneled output streams
ALOG_ASSERT(outputs.size() < 2, "getOutput(): getOutputsForDevice() "
"returned %d outputs for device %04x", outputs.size(), device);
output = outputs[0];
ALOGW_IF((output ==0), "getOutput() could not find output for stream %d, samplingRate %d, format %d, channels %x, flags %x",
stream, samplingRate, format, channels, flags);
return output;
}
status_t AudioPolicyManagerBase::startOutput(audio_io_handle_t output,
AudioSystem::stream_type stream,
int session)
{
ALOGV("startOutput() output %d, stream %d, session %d", output, stream, session);
ssize_t index = mOutputs.indexOfKey(output);
if (index < 0) {
ALOGW("startOutput() unknow output %d", output);
return BAD_VALUE;
}
AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream);
// incremenent 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
// necassary for a correct control of hardware output routing by startOutput() and stopOutput()
outputDesc->changeRefCount(stream, 1);
uint32_t prevDevice = outputDesc->device();
setOutputDevice(output, getNewDevice(output));
uint32_t newDevice = outputDesc->device();
// 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((audio_devices_t)newDevice),
output,
newDevice);
// FIXME: need a delay to make sure that audio path switches to speaker before sound
// starts. Should be platform specific?
if (stream == AudioSystem::ENFORCED_AUDIBLE &&
prevDevice != newDevice) {
usleep(outputDesc->mLatency*4*1000);
}
return NO_ERROR;
}
status_t AudioPolicyManagerBase::stopOutput(audio_io_handle_t output,
AudioSystem::stream_type stream,
int session)
{
ALOGV("stopOutput() output %d, stream %d, session %d", output, stream, session);
ssize_t index = mOutputs.indexOfKey(output);
if (index < 0) {
ALOGW("stopOutput() unknow output %d", output);
return BAD_VALUE;
}
AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream);
// 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()
outputDesc->mStopTime[stream] = systemTime();
setOutputDevice(output, getNewDevice(output), false, outputDesc->mLatency*2);
if (output != mPrimaryOutput) {
setOutputDevice(mPrimaryOutput, getNewDevice(mPrimaryOutput), true);
}
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->refCount() == 0) {
mpClientInterface->closeOutput(output);
delete mOutputs.valueAt(index);
mOutputs.removeItem(output);
mTestOutputs[testIndex] = 0;
}
return;
}
#endif //AUDIO_POLICY_TEST
if (mOutputs.valueAt(index)->mFlags & AudioSystem::OUTPUT_FLAG_DIRECT) {
mpClientInterface->closeOutput(output);
delete mOutputs.valueAt(index);
mOutputs.removeItem(output);
}
}
audio_io_handle_t AudioPolicyManagerBase::getInput(int inputSource,
uint32_t samplingRate,
uint32_t format,
uint32_t channels,
AudioSystem::audio_in_acoustics acoustics)
{
audio_io_handle_t input = 0;
uint32_t device = getDeviceForInputSource(inputSource);
ALOGV("getInput() inputSource %d, samplingRate %d, format %d, channels %x, acoustics %x", inputSource, samplingRate, format, channels, acoustics);
if (device == 0) {
return 0;
}
// adapt channel selection to input source
switch(inputSource) {
case AUDIO_SOURCE_VOICE_UPLINK:
channels = AudioSystem::CHANNEL_IN_VOICE_UPLINK;
break;
case AUDIO_SOURCE_VOICE_DOWNLINK:
channels = AudioSystem::CHANNEL_IN_VOICE_DNLINK;
break;
case AUDIO_SOURCE_VOICE_CALL:
channels = (AudioSystem::CHANNEL_IN_VOICE_UPLINK | AudioSystem::CHANNEL_IN_VOICE_DNLINK);
break;
default:
break;
}
AudioInputDescriptor *inputDesc = new AudioInputDescriptor();
inputDesc->mInputSource = inputSource;
inputDesc->mDevice = device;
inputDesc->mSamplingRate = samplingRate;
inputDesc->mFormat = format;
inputDesc->mChannels = channels;
inputDesc->mAcoustics = acoustics;
inputDesc->mRefCount = 0;
input = mpClientInterface->openInput(&inputDesc->mDevice,
&inputDesc->mSamplingRate,
&inputDesc->mFormat,
&inputDesc->mChannels,
(audio_in_acoustics_t) inputDesc->mAcoustics);
// only accept input with the exact requested set of parameters
if (input == 0 ||
(samplingRate != inputDesc->mSamplingRate) ||
(format != inputDesc->mFormat) ||
(channels != inputDesc->mChannels)) {
ALOGV("getInput() failed opening input: samplingRate %d, format %d, channels %d",
samplingRate, format, channels);
if (input != 0) {
mpClientInterface->closeInput(input);
}
delete inputDesc;
return 0;
}
mInputs.add(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() unknow 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
if (getActiveInput() != 0) {
ALOGW("startInput() input %d failed: other input already started", input);
return INVALID_OPERATION;
}
}
AudioParameter param = AudioParameter();
param.addInt(String8(AudioParameter::keyRouting), (int)inputDesc->mDevice);
param.addInt(String8(AudioParameter::keyInputSource), (int)inputDesc->mInputSource);
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() unknow 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 {
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::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((audio_devices_t)mOutputs.valueAt(i)->device());
if (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 = (audio_devices_t)getDeviceForStrategy(getStrategy(stream), true);
}
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::getOutputForEffect(effect_descriptor_t *desc)
{
ALOGV("getOutputForEffect()");
// apply simple rule where global effects are attached to the same output as MUSIC streams
return getOutput(AudioSystem::MUSIC);
}
status_t AudioPolicyManagerBase::registerEffect(effect_descriptor_t *desc,
audio_io_handle_t io,
uint32_t strategy,
int 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::isStreamActive(int stream, uint32_t inPastMs) const
{
nsecs_t sysTime = systemTime();
for (size_t i = 0; i < mOutputs.size(); i++) {
if (mOutputs.valueAt(i)->mRefCount[stream] != 0 ||
ns2ms(sysTime - mOutputs.valueAt(i)->mStopTime[stream]) < inPastMs) {
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, " Hardware 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, " 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);
write(fd, result.string(), result.size());
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, " %02d ", 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;
}
// ----------------------------------------------------------------------------
// AudioPolicyManagerBase
// ----------------------------------------------------------------------------
AudioPolicyManagerBase::AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface)
:
#ifdef AUDIO_POLICY_TEST
Thread(false),
#endif //AUDIO_POLICY_TEST
mAvailableOutputDevices(0),
mPhoneState(AudioSystem::MODE_NORMAL),
mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f),
mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0),
mA2dpSuspended(false)
{
mpClientInterface = clientInterface;
for (int i = 0; i < AudioSystem::NUM_FORCE_USE; i++) {
mForceUse[i] = AudioSystem::FORCE_NONE;
}
initializeVolumeCurves();
mA2dpDeviceAddress = String8("");
mScoDeviceAddress = String8("");
// TODO read this from configuration file
sHasA2dp = true;
const output_profile_t **outProfile = sAvailableOutputs;
// open all output streams needed to access attached devices
while (*outProfile)
{
if ((*outProfile)->mSupportedDevices & sAttachedOutputDevices) {
AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(*outProfile);
outputDesc->mDevice = (uint32_t)sDefaultOutputDevice & (*outProfile)->mSupportedDevices;
outputDesc->mSamplingRate = (*outProfile)->mSamplingRates[0];
outputDesc->mFormat = (*outProfile)->mFormats[0];
outputDesc->mChannels = (*outProfile)->mChannelMasks[0];
outputDesc->mFlags = (AudioSystem::output_flags)(*outProfile)->mFlags;
audio_io_handle_t output = mpClientInterface->openOutput(&outputDesc->mDevice,
&outputDesc->mSamplingRate,
&outputDesc->mFormat,
&outputDesc->mChannels,
&outputDesc->mLatency,
outputDesc->mFlags);
if (output == 0) {
delete outputDesc;
} else {
mAvailableOutputDevices |= ((*outProfile)->mSupportedDevices & sAttachedOutputDevices);
if ((*outProfile)->mFlags & AUDIO_POLICY_OUTPUT_FLAG_PRIMARY) {
mPrimaryOutput = output;
}
addOutput(output, outputDesc);
setOutputDevice(output,
(uint32_t)(sDefaultOutputDevice & (*outProfile)->mSupportedDevices),
true);
}
}
outProfile++;
}
ALOGE_IF((sAttachedOutputDevices & ~mAvailableOutputDevices),
"Not output found for attached devices %08x",
(sAttachedOutputDevices & ~mAvailableOutputDevices));
ALOGE_IF((mPrimaryOutput == 0), "Failed to open primary output");
mAvailableInputDevices = AudioSystem::DEVICE_IN_BUILTIN_MIC;
updateDeviceForStrategy();
#ifdef AUDIO_POLICY_TEST
if (mPrimaryOutput != 0) {
AudioParameter outputCmd = AudioParameter();
outputCmd.addInt(String8("set_id"), 0);
mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString());
mTestDevice = AudioSystem::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);
}
mOutputs.clear();
for (size_t i = 0; i < mInputs.size(); i++) {
mpClientInterface->closeInput(mInputs.keyAt(i));
delete mInputs.valueAt(i);
}
mInputs.clear();
}
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"));
mpClientInterface->closeOutput(mPrimaryOutput);
delete mOutputs.valueFor(mPrimaryOutput);
mOutputs.removeItem(mPrimaryOutput);
AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL);
outputDesc->mDevice = (uint32_t)AudioSystem::DEVICE_OUT_SPEAKER;
mPrimaryOutput = mpClientInterface->openOutput(&outputDesc->mDevice,
&outputDesc->mSamplingRate,
&outputDesc->mFormat,
&outputDesc->mChannels,
&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->mChannels);
} 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);
}
audio_io_handle_t AudioPolicyManagerBase::checkOutputForDevice(
AudioSystem::audio_devices device,
AudioSystem::device_connection_state state)
{
audio_io_handle_t output = 0;
AudioOutputDescriptor *outputDesc;
// TODO handle multiple outputs supporting overlapping sets of devices.
if (state == AudioSystem::DEVICE_STATE_AVAILABLE) {
// first check if one output already open can be routed to this device
for (size_t i = 0; i < mOutputs.size(); i++) {
AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
if (outputDesc->mProfile && outputDesc->mProfile->mSupportedDevices & device) {
return mOutputs.keyAt(i);
}
}
// then look for one available output that can be routed to this device
const output_profile_t **outProfile = sAvailableOutputs;
while (*outProfile)
{
if ((*outProfile)->mSupportedDevices & device) {
break;
}
outProfile++;
}
if (*outProfile == NULL) {
ALOGW("No output available for device %04x", device);
return output;
}
ALOGV("opening output for device %08x", device);
outputDesc = new AudioOutputDescriptor(*outProfile);
outputDesc->mDevice = device;
output = mpClientInterface->openOutput(&outputDesc->mDevice,
&outputDesc->mSamplingRate,
&outputDesc->mFormat,
&outputDesc->mChannels,
&outputDesc->mLatency,
outputDesc->mFlags);
if (output != 0) {
audio_io_handle_t duplicatedOutput = 0;
// add output descriptor
addOutput(output, outputDesc);
// set initial stream volume for device
applyStreamVolumes(output, device);
//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 = outputDesc->mSamplingRate;
dupOutputDesc->mFormat = outputDesc->mFormat;
dupOutputDesc->mChannels = outputDesc->mChannels;
dupOutputDesc->mLatency = outputDesc->mLatency;
addOutput(duplicatedOutput, dupOutputDesc);
applyStreamVolumes(duplicatedOutput, device);
} else {
ALOGW("getOutput() could not open duplicated output for %d and %d",
mPrimaryOutput, output);
mpClientInterface->closeOutput(output);
mOutputs.removeItem(output);
delete outputDesc;
return 0;
}
} else {
ALOGW("setDeviceConnectionState() could not open A2DP output for device %x", device);
delete outputDesc;
return 0;
}
} else {
// we assume that one given device is supported by zero or one output
// check if one opened output is not needed any more after disconnecting one device
for (size_t i = 0; i < mOutputs.size(); i++) {
outputDesc = mOutputs.valueAt(i);
if (outputDesc->mProfile &&
!(outputDesc->mProfile->mSupportedDevices & mAvailableOutputDevices)) {
output = mOutputs.keyAt(i);
break;
}
}
}
return output;
}
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 mOutputs.valueFor(output);
mOutputs.removeItem(output);
}
SortedVector<audio_io_handle_t> AudioPolicyManagerBase::getOutputsForDevice(uint32_t device)
{
SortedVector<audio_io_handle_t> outputs;
ALOGV("getOutputsForDevice() device %04x", device);
for (size_t i = 0; i < mOutputs.size(); i++) {
if ((device & mOutputs.valueAt(i)->supportedDevices()) == device) {
ALOGV("getOutputsForDevice() found output %d", mOutputs.keyAt(i));
outputs.add(mOutputs.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)
{
SortedVector<audio_io_handle_t> srcOutputs =
getOutputsForDevice(getDeviceForStrategy(strategy));
SortedVector<audio_io_handle_t> dstOutputs =
getOutputsForDevice(getDeviceForStrategy(strategy, false));
// TODO: current implementation assumes that at most one output corresponds to a device.
// this will change when supporting low power, low latency or tunneled output streams
ALOG_ASSERT(srcOutputs.size() < 2, "checkOutputForStrategy(): "
"more than one (%d) source output for strategy %d", srcOutputs.size(), strategy);
ALOG_ASSERT(dstOutputs.size() < 2, "checkOutputForStrategy(): "
"more than one (%d) destination output for strategy %d", dstOutputs.size(), strategy);
if (!vectorsEqual(srcOutputs,dstOutputs)) {
ALOGV("checkOutputForStrategy() strategy %d, moving from output %d to output %d",
strategy, srcOutputs[0], dstOutputs[0]);
// mute media strategy while moving tracks from one output to another
setStrategyMute(strategy, true, srcOutputs[0]);
setStrategyMute(strategy, false, srcOutputs[0], MUTE_TIME_MS);
// Move effects associated to this strategy from previous output to new output
for (size_t i = 0; i < mEffects.size(); i++) {
EffectDescriptor *desc = mEffects.valueAt(i);
if (desc->mSession != AudioSystem::SESSION_OUTPUT_STAGE &&
desc->mStrategy == strategy &&
desc->mIo == srcOutputs[0]) {
ALOGV("checkOutputForStrategy() moving effect %d to output %d",
mEffects.keyAt(i), dstOutputs[0]);
mpClientInterface->moveEffects(desc->mSession, srcOutputs[0], dstOutputs[0]);
desc->mIo = dstOutputs[0];
}
}
// 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->setStreamOutput((AudioSystem::stream_type)i, dstOutputs[0]);
}
}
}
}
void AudioPolicyManagerBase::checkOutputForAllStrategies()
{
checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE);
checkOutputForStrategy(STRATEGY_PHONE);
checkOutputForStrategy(STRATEGY_SONIFICATION);
checkOutputForStrategy(STRATEGY_MEDIA);
checkOutputForStrategy(STRATEGY_DTMF);
}
audio_io_handle_t AudioPolicyManagerBase::getA2dpOutput()
{
if (!sHasA2dp) {
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 (!sHasA2dp) {
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;
}
}
}
uint32_t AudioPolicyManagerBase::getNewDevice(audio_io_handle_t output, bool fromCache)
{
uint32_t device = 0;
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 media is active on the output:
// use device for strategy media
// 5: the strategy DTMF is active on the output:
// use device for strategy DTMF
if (outputDesc->isUsedByStrategy(STRATEGY_ENFORCED_AUDIBLE)) {
device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache);
} else if (isInCall() ||
outputDesc->isUsedByStrategy(STRATEGY_PHONE)) {
device = getDeviceForStrategy(STRATEGY_PHONE, fromCache);
} else if (outputDesc->isUsedByStrategy(STRATEGY_SONIFICATION)) {
device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache);
} else if (outputDesc->isUsedByStrategy(STRATEGY_MEDIA)) {
device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache);
} else if (outputDesc->isUsedByStrategy(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);
}
uint32_t AudioPolicyManagerBase::getDevicesForStream(AudioSystem::stream_type stream) {
uint32_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 = 0;
} else {
AudioPolicyManagerBase::routing_strategy strategy = getStrategy(stream);
devices = getDeviceForStrategy(strategy, true);
}
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::NOTIFICATION:
case AudioSystem::ALARM:
return STRATEGY_SONIFICATION;
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;
}
}
uint32_t AudioPolicyManagerBase::getDeviceForStrategy(routing_strategy strategy, bool fromCache)
{
uint32_t device = 0;
if (fromCache) {
ALOGV("getDeviceForStrategy() from cache strategy %d, device %x", strategy, mDeviceForStrategy[strategy]);
return mDeviceForStrategy[strategy];
}
switch (strategy) {
case STRATEGY_DTMF:
if (!isInCall()) {
// when off call, DTMF strategy follows the same rules as MEDIA strategy
device = getDeviceForStrategy(STRATEGY_MEDIA, false);
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 & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
if (device) break;
}
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AudioSystem::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
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADPHONE;
if (device) break;
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADSET;
if (device) break;
// when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP
if (sHasA2dp && !isInCall() && !mA2dpSuspended) {
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP;
if (device) break;
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
if (device) break;
}
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL;
if (device) break;
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_EARPIECE;
if (device == 0) {
ALOGE("getDeviceForStrategy() earpiece device not found");
}
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 (sHasA2dp && !isInCall() && !mA2dpSuspended) {
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
if (device) break;
}
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL;
if (device) break;
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER;
if (device == 0) {
ALOGE("getDeviceForStrategy() speaker device not found");
}
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);
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
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER;
if (device == 0) {
ALOGE("getDeviceForStrategy() speaker device not found");
}
// The second device used for sonification is the same as the device used by media strategy
// FALL THROUGH
case STRATEGY_MEDIA: {
uint32_t device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADPHONE;
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADSET;
}
if (sHasA2dp && (getA2dpOutput() != 0) && !mA2dpSuspended) {
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP;
}
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
}
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
}
}
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET;
}
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL;
}
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET;
}
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER;
}
// device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or
// STRATEGY_ENFORCED_AUDIBLE, 0 otherwise
device |= device2;
if (device == 0) {
ALOGE("getDeviceForStrategy() speaker device not found");
}
} break;
default:
ALOGW("getDeviceForStrategy() unknown strategy: %d", strategy);
break;
}
ALOGV("getDeviceForStrategy() strategy %d, device %x", strategy, device);
return device;
}
void AudioPolicyManagerBase::updateDeviceForStrategy()
{
for (int i = 0; i < NUM_STRATEGIES; i++) {
mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false);
}
}
void AudioPolicyManagerBase::setOutputDevice(audio_io_handle_t output, uint32_t device, bool force, int delayMs)
{
ALOGV("setOutputDevice() output %d device %x delayMs %d", output, device, delayMs);
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
if (outputDesc->isDuplicated()) {
setOutputDevice(outputDesc->mOutput1->mId, device, force, delayMs);
setOutputDevice(outputDesc->mOutput2->mId, device, force, delayMs);
return;
}
// filter devices according to output selected
device &= outputDesc->mProfile->mSupportedDevices;
uint32_t prevDevice = (uint32_t)outputDesc->device();
// Do not change the routing if:
// - the requestede device is 0
// - 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 == 0 || device == prevDevice) && !force) {
ALOGV("setOutputDevice() setting same device %x or null device for output %d", device, output);
return;
}
outputDesc->mDevice = device;
// mute media streams if both speaker and headset are selected
if (output == mPrimaryOutput && AudioSystem::popCount(device) == 2) {
setStrategyMute(STRATEGY_MEDIA, true, output);
// wait for the PCM output buffers to empty before proceeding with the rest of the command
// FIXME: increased delay due to larger buffers used for low power audio mode.
// remove when low power audio is controlled by policy manager.
usleep(outputDesc->mLatency*8*1000);
}
// do the routing
AudioParameter param = AudioParameter();
param.addInt(String8(AudioParameter::keyRouting), (int)device);
mpClientInterface->setParameters(mPrimaryOutput, param.toString(), delayMs);
// update stream volumes according to new device
applyStreamVolumes(output, device, delayMs);
// if changing from a combined headset + speaker route, unmute media streams
if (output == mPrimaryOutput && AudioSystem::popCount(prevDevice) == 2) {
setStrategyMute(STRATEGY_MEDIA, false, output, delayMs);
}
}
uint32_t AudioPolicyManagerBase::getDeviceForInputSource(int inputSource)
{
uint32_t device;
switch(inputSource) {
case AUDIO_SOURCE_DEFAULT:
case AUDIO_SOURCE_MIC:
case AUDIO_SOURCE_VOICE_RECOGNITION:
case AUDIO_SOURCE_VOICE_COMMUNICATION:
if (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO &&
mAvailableInputDevices & AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
device = AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET;
} else if (mAvailableInputDevices & AudioSystem::DEVICE_IN_WIRED_HEADSET) {
device = AudioSystem::DEVICE_IN_WIRED_HEADSET;
} else {
device = AudioSystem::DEVICE_IN_BUILTIN_MIC;
}
break;
case AUDIO_SOURCE_CAMCORDER:
if (hasBackMicrophone()) {
device = AudioSystem::DEVICE_IN_BACK_MIC;
} else {
device = AudioSystem::DEVICE_IN_BUILTIN_MIC;
}
break;
case AUDIO_SOURCE_VOICE_UPLINK:
case AUDIO_SOURCE_VOICE_DOWNLINK:
case AUDIO_SOURCE_VOICE_CALL:
device = AudioSystem::DEVICE_IN_VOICE_CALL;
break;
default:
ALOGW("getDeviceForInputSource() invalid input source %d", inputSource);
device = 0;
break;
}
ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device);
return device;
}
audio_io_handle_t AudioPolicyManagerBase::getActiveInput()
{
for (size_t i = 0; i < mInputs.size(); i++) {
if (mInputs.valueAt(i)->mRefCount > 0) {
return mInputs.keyAt(i);
}
}
return 0;
}
audio_devices_t AudioPolicyManagerBase::getDeviceForVolume(audio_devices_t device)
{
if (device == 0) {
// 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(uint32_t device)
{
switch(getDeviceForVolume((audio_devices_t)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:
default:
return DEVICE_CATEGORY_SPEAKER;
}
}
float AudioPolicyManagerBase::volIndexToAmpl(uint32_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 )
ALOGV("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::sVolumeProfiles[AudioPolicyManagerBase::NUM_STRATEGIES]
[AudioPolicyManagerBase::DEVICE_CATEGORY_CNT] = {
{ // STRATEGY_MEDIA
sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // STRATEGY_PHONE
sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
sDefaultVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // STRATEGY_SONIFICATION
sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // STRATEGY_DTMF
sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
sDefaultVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE
},
{ // STRATEGY_ENFORCED_AUDIBLE
sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
sDefaultVolumeCurve // 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[getStrategy((AudioSystem::stream_type)i)][j];
}
}
}
float AudioPolicyManagerBase::computeVolume(int stream,
int index,
audio_io_handle_t output,
uint32_t device)
{
float volume = 1.0;
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
StreamDescriptor &streamDesc = mStreams[stream];
if (device == 0) {
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 == AudioSystem::DEVICE_OUT_AUX_DIGITAL ||
device == AudioSystem::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.
if ((device &
(AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP |
AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
AudioSystem::DEVICE_OUT_WIRED_HEADSET |
AudioSystem::DEVICE_OUT_WIRED_HEADPHONE)) &&
((getStrategy((AudioSystem::stream_type)stream) == STRATEGY_SONIFICATION) ||
(stream == AudioSystem::SYSTEM)) &&
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 (outputDesc->mRefCount[AudioSystem::MUSIC] || mLimitRingtoneVolume) {
float musicVol = computeVolume(AudioSystem::MUSIC,
mStreams[AudioSystem::MUSIC].getVolumeIndex((audio_devices_t)device),
output,
(uint32_t)device);
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,
uint32_t device,
int delayMs,
bool force)
{
// do not change actual stream volume if the stream is muted
if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) {
ALOGV("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;
ALOGV("setStreamVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs);
if (stream == AudioSystem::VOICE_CALL ||
stream == AudioSystem::DTMF ||
stream == AudioSystem::BLUETOOTH_SCO) {
// offset value to reflect actual hardware volume that never reaches 0
// 1% corresponds roughly to first step in VOICE_CALL stream volume setting (see AudioService.java)
volume = 0.01 + 0.99 * volume;
// 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,
uint32_t device,
int delayMs,
bool force)
{
ALOGV("applyStreamVolumes() for output %d and device %x", output, device);
for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
checkAndSetVolume(stream,
mStreams[stream].getVolumeIndex((audio_devices_t)device),
output,
device,
delayMs,
force);
}
}
void AudioPolicyManagerBase::setStrategyMute(routing_strategy strategy, bool on, audio_io_handle_t output, int delayMs)
{
ALOGV("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);
}
}
}
void AudioPolicyManagerBase::setStreamMute(int stream, bool on, audio_io_handle_t output, int delayMs)
{
StreamDescriptor &streamDesc = mStreams[stream];
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
uint32_t device = outputDesc->device();
ALOGV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d", stream, on, output, outputDesc->mMuteCount[stream]);
if (on) {
if (outputDesc->mMuteCount[stream] == 0) {
if (streamDesc.mCanBeMuted) {
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) {
ALOGW("setStreamMute() unmuting non muted stream!");
return;
}
if (--outputDesc->mMuteCount[stream] == 0) {
checkAndSetVolume(stream,
streamDesc.getVolumeIndex((audio_devices_t)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
if (getStrategy((AudioSystem::stream_type)stream) == STRATEGY_SONIFICATION) {
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)) {
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));
}
bool AudioPolicyManagerBase::needsDirectOuput(AudioSystem::stream_type stream,
uint32_t samplingRate,
uint32_t format,
uint32_t channels,
AudioSystem::output_flags flags,
uint32_t device)
{
return ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) ||
(format != 0 && !AudioSystem::isLinearPCM(format)));
}
uint32_t AudioPolicyManagerBase::getMaxEffectsCpuLoad()
{
return MAX_EFFECTS_CPU_LOAD;
}
uint32_t AudioPolicyManagerBase::getMaxEffectsMemory()
{
return MAX_EFFECTS_MEMORY;
}
// --- AudioOutputDescriptor class implementation
AudioPolicyManagerBase::AudioOutputDescriptor::AudioOutputDescriptor(
const output_profile_t *profile)
: mId(0), mSamplingRate(0), mFormat(0), mChannels(0), mLatency(0),
mFlags((AudioSystem::output_flags)0), mDevice(0), mOutput1(0), mOutput2(0), mProfile(profile)
{
// 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;
}
}
uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::device()
{
uint32_t device = 0;
if (isDuplicated()) {
device = mOutput1->mDevice | mOutput2->mDevice;
} else {
device = mDevice;
}
return device;
}
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]);
}
uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::refCount()
{
uint32_t refcount = 0;
for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
refcount += mRefCount[i];
}
return refcount;
}
uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::strategyRefCount(routing_strategy strategy)
{
uint32_t refCount = 0;
for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
if (getStrategy((AudioSystem::stream_type)i) == strategy) {
refCount += mRefCount[i];
}
}
return refCount;
}
uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::supportedDevices()
{
if (isDuplicated()) {
return (mOutput1->supportedDevices() | mOutput2->supportedDevices());
} else {
return mProfile->mSupportedDevices ;
}
}
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: %d\n", mFormat);
result.append(buffer);
snprintf(buffer, SIZE, " Channels: %08x\n", mChannels);
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()
: mSamplingRate(0), mFormat(0), mChannels(0),
mAcoustics((AudioSystem::audio_in_acoustics)0), mDevice(0), mRefCount(0),
mInputSource(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", mChannels);
result.append(buffer);
snprintf(buffer, SIZE, " Acoustics %08x\n", mAcoustics);
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;
}
}; // namespace android
Reference in a new issue View git blame Copy permalink