/*
* 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_NDEBUG 0
#define LOG_TAG "AudioPolicyManagerALSA"
#include <utils/Log.h>
#include "AudioPolicyManagerALSA.h"
#include <media/mediarecorder.h>
namespace android {
status_t AudioPolicyManagerALSA::setDeviceConnectionState(AudioSystem::audio_devices device,
AudioSystem::device_connection_state state,
const char *device_address)
{
LOGV("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) {
LOGE("setDeviceConnectionState() invalid address: %s", device_address);
return BAD_VALUE;
}
// handle output devices
if (AudioSystem::isOutputDevice(device)) {
#ifndef WITH_A2DP
if (AudioSystem::isA2dpDevice(device)) {
LOGE("setDeviceConnectionState() invalid device: %x", device);
return BAD_VALUE;
}
#endif
switch (state)
{
// handle output device connection
case AudioSystem::DEVICE_STATE_AVAILABLE:
if (mAvailableOutputDevices & device) {
LOGW("setDeviceConnectionState() device already connected: %x", device);
return INVALID_OPERATION;
}
LOGV("setDeviceConnectionState() connecting device %x", device);
// register new device as available
mAvailableOutputDevices |= device;
#ifdef WITH_A2DP
// handle A2DP device connection
if (AudioSystem::isA2dpDevice(device)) {
status_t status = handleA2dpConnection(device, device_address);
if (status != NO_ERROR) {
mAvailableOutputDevices &= ~device;
return status;
}
} else
#endif
{
if (AudioSystem::isBluetoothScoDevice(device)) {
LOGV("setDeviceConnectionState() BT SCO device, address %s", device_address);
// keep track of SCO device address
mScoDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
#ifdef WITH_A2DP
if (mA2dpOutput != 0 &&
mPhoneState != AudioSystem::MODE_NORMAL) {
mpClientInterface->suspendOutput(mA2dpOutput);
}
#endif
}
}
break;
// handle output device disconnection
case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
if (!(mAvailableOutputDevices & device)) {
LOGW("setDeviceConnectionState() device not connected: %x", device);
return INVALID_OPERATION;
}
LOGV("setDeviceConnectionState() disconnecting device %x", device);
// remove device from available output devices
mAvailableOutputDevices &= ~device;
#ifdef WITH_A2DP
// handle A2DP device disconnection
if (AudioSystem::isA2dpDevice(device)) {
status_t status = handleA2dpDisconnection(device, device_address);
if (status != NO_ERROR) {
mAvailableOutputDevices |= device;
return status;
}
} else
#endif
{
if (AudioSystem::isBluetoothScoDevice(device)) {
mScoDeviceAddress = "";
#ifdef WITH_A2DP
if (mA2dpOutput != 0 &&
mPhoneState != AudioSystem::MODE_NORMAL) {
mpClientInterface->restoreOutput(mA2dpOutput);
}
#endif
}
}
} break;
default:
LOGE("setDeviceConnectionState() invalid state: %x", state);
return BAD_VALUE;
}
// request routing change if necessary
uint32_t newDevice = getNewDevice(mHardwareOutput, false);
// force routing if device disconnection occurs when stream is stopped
if ((newDevice == 0) && (state == AudioSystem::DEVICE_STATE_UNAVAILABLE))
newDevice = getDeviceForStrategy(STRATEGY_MEDIA, false);
#ifdef WITH_A2DP
checkOutputForAllStrategies();
// A2DP outputs must be closed after checkOutputForAllStrategies() is executed
if (state == AudioSystem::DEVICE_STATE_UNAVAILABLE && AudioSystem::isA2dpDevice(device)) {
closeA2dpOutputs();
}
#endif
updateDeviceForStrategy();
setOutputDevice(mHardwareOutput, 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) {
LOGW("setDeviceConnectionState() device already connected: %d", device);
return INVALID_OPERATION;
}
mAvailableInputDevices |= device;
}
break;
// handle input device disconnection
case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
if (!(mAvailableInputDevices & device)) {
LOGW("setDeviceConnectionState() device not connected: %d", device);
return INVALID_OPERATION;
}
mAvailableInputDevices &= ~device;
} break;
default:
LOGE("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) {
LOGV("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());
}
}
#ifdef HAS_FM_RADIO
else {
if (device == AudioSystem::DEVICE_IN_FM_ANALOG) {
routing_strategy strategy = getStrategy((AudioSystem::stream_type)3);
uint32_t curOutdevice = getDeviceForStrategy(strategy);
/* If A2DP headset is connected then route FM to Headset */
if (curOutdevice == AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP ||
curOutdevice == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO) {
curOutdevice = AudioSystem::DEVICE_OUT_WIRED_HEADSET;
}
if (state) {
// routing_strategy strategy = getStrategy((AudioSystem::stream_type)3);
// uint32_t curOutdevice = getDeviceForStrategy(strategy);
/* Get the new input descriptor for FM Rx In */
mfmInput = getFMInput(AUDIO_SOURCE_FM_ANALOG,8000,1,
AudioSystem::CHANNEL_IN_MONO,(AudioSystem::audio_in_acoustics)7);
/* Forcely open the current output device again for
* FM Rx playback path to open
*/
LOGV("curOutdevice = %x",curOutdevice);
setOutputDevice(mHardwareOutput, curOutdevice, true);
/* Tell the audio flinger playback thread that
* FM Rx is active
*/
mpClientInterface->setFMRxActive(true);
} else {
int newDevice=0;
AudioParameter param = AudioParameter();
param.addInt(String8(AudioParameter::keyRouting), (int)newDevice);
/* Change the input device from FM to default before releasing Input */
mpClientInterface->setParameters(mfmInput, param.toString());
param.addInt(String8("fm_off"), (int)newDevice);
/* Close the capture handle */
mpClientInterface->setParameters(mfmInput, param.toString());
/* Release the input descriptor for FM Rx In */
releaseInput(mfmInput);
/* Close the playback handle */
mpClientInterface->setParameters(mHardwareOutput, param.toString());
/* Tell the audio flinger playback thread that
* FM Rx is not active now.
*/
mpClientInterface->setFMRxActive(false);
}
}
}
#endif
return NO_ERROR;
}
LOGW("setDeviceConnectionState() invalid device: %x", device);
return BAD_VALUE;
}
uint32_t AudioPolicyManagerALSA::getDeviceForStrategy(routing_strategy strategy, bool fromCache)
{
uint32_t device = 0;
if (fromCache) {
LOGV("getDeviceForStrategy() from cache strategy %d, device %x", strategy, mDeviceForStrategy[strategy]);
return mDeviceForStrategy[strategy];
}
switch (strategy) {
case STRATEGY_DTMF:
if (mPhoneState != AudioSystem::MODE_IN_CALL) {
// 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 (mPhoneState != AudioSystem::MODE_IN_CALL || 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;
#ifdef WITH_A2DP
// when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP
if (mPhoneState != AudioSystem::MODE_IN_CALL) {
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP;
if (device) break;
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
if (device) break;
}
#endif
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_EARPIECE;
if (device == 0) {
LOGE("getDeviceForStrategy() earpiece device not found");
}
break;
case AudioSystem::FORCE_SPEAKER:
if (mPhoneState != AudioSystem::MODE_IN_CALL || strategy != STRATEGY_DTMF) {
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
if (device) break;
}
#ifdef WITH_A2DP
// when not in a phone call, phone strategy should route STREAM_VOICE_CALL to
// A2DP speaker when forcing to speaker output
if (mPhoneState != AudioSystem::MODE_IN_CALL) {
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
if (device) break;
}
#endif
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER;
if (device == 0) {
LOGE("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 (mPhoneState == AudioSystem::MODE_IN_CALL) {
device = getDeviceForStrategy(STRATEGY_PHONE, false);
break;
}
device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER;
if (device == 0) {
LOGE("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_AUX_DIGITAL;
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADPHONE;
}
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADSET;
}
#ifdef WITH_A2DP
if (mA2dpOutput != 0) {
if (strategy == STRATEGY_SONIFICATION && !a2dpUsedForSonification()) {
break;
}
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;
}
}
#endif
// Once SCO connection is connected, map strategy_media to
// SCO headset for music streaming. BT SCO MM_UL use case
if (mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) {
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
}
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
}
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO;
}
}
#ifdef HAS_FM_RADIO
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_FM_TRANSMIT;
}
#endif
if (device2 == 0) {
device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER;
}
// device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION, 0 otherwise
device |= device2;
if (device == 0) {
LOGE("getDeviceForStrategy() speaker device not found");
}
} break;
default:
LOGW("getDeviceForStrategy() unknown strategy: %d", strategy);
break;
}
LOGV("getDeviceForStrategy() strategy %d, device %x", strategy, device);
return device;
}
#ifdef HAS_FM_RADIO
audio_io_handle_t AudioPolicyManagerALSA::getFMInput(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 = 0;
if (inputSource == AUDIO_SOURCE_FM_ANALOG)
device = AudioSystem::DEVICE_IN_FM_ANALOG;
else {
/* wrong input source */
return 0;
}
LOGV("getFMInput() inputSource %d, samplingRate %d, format %d, channels %x, acoustics %x", inputSource, samplingRate, format, channels, acoustics);
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,
inputDesc->mAcoustics);
// only accept input with the exact requested set of parameters
if (input == 0 ||
(samplingRate != inputDesc->mSamplingRate) ||
(format != inputDesc->mFormat) ||
(channels != inputDesc->mChannels)) {
LOGV("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;
}
#endif
status_t AudioPolicyManagerALSA::stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream)
{
LOGV("stopOutput() output %d, stream %d", output, stream);
ssize_t index = mOutputs.indexOfKey(output);
if (index < 0) {
LOGW("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 (mPhoneState == AudioSystem::MODE_IN_CALL) {
handleIncallSonification(stream, false, false);
}
if (outputDesc->isUsedByStrategy(strategy)) {
// decrement usage count of this stream on the output
outputDesc->changeRefCount(stream, -1);
if (!outputDesc->isUsedByStrategy(strategy)) {
// if the stream is the last of its strategy to use this output, change routing
// in the following order or priority:
// PHONE > SONIFICATION > MEDIA > DTMF
uint32_t newDevice = 0;
if (outputDesc->isUsedByStrategy(STRATEGY_PHONE)) {
newDevice = getDeviceForStrategy(STRATEGY_PHONE);
} else if (outputDesc->isUsedByStrategy(STRATEGY_SONIFICATION)) {
newDevice = getDeviceForStrategy(STRATEGY_SONIFICATION);
} else if (mPhoneState == AudioSystem::MODE_IN_CALL) {
newDevice = getDeviceForStrategy(STRATEGY_PHONE);
} else if (outputDesc->isUsedByStrategy(STRATEGY_MEDIA)) {
newDevice = getDeviceForStrategy(STRATEGY_MEDIA);
} else if (outputDesc->isUsedByStrategy(STRATEGY_DTMF)) {
newDevice = getDeviceForStrategy(STRATEGY_DTMF);
}
// apply routing change if necessary.
// insert a delay of 2 times the audio hardware latency to ensure PCM
// buffers in audio flinger and audio hardware are emptied before the
// routing change is executed.
setOutputDevice(mHardwareOutput, newDevice, false, mOutputs.valueFor(mHardwareOutput)->mLatency*2);
}
// store time at which the last music track was stopped - see computeVolume()
if (stream == AudioSystem::MUSIC) {
mMusicStopTime = systemTime();
}
return NO_ERROR;
} else {
LOGW("stopOutput() refcount is already 0 for output %d", output);
return INVALID_OPERATION;
}
}
// ----------------------------------------------------------------------------
// AudioPolicyManagerALSA
// ----------------------------------------------------------------------------
// --- class factory
extern "C" AudioPolicyInterface* createAudioPolicyManager(AudioPolicyClientInterface *clientInterface)
{
return new AudioPolicyManagerALSA(clientInterface);
}
extern "C" void destroyAudioPolicyManager(AudioPolicyInterface *interface)
{
delete interface;
}
// Nothing currently different between the Base implementation.
AudioPolicyManagerALSA::AudioPolicyManagerALSA(AudioPolicyClientInterface *clientInterface)
: AudioPolicyManagerBase(clientInterface)
{
}
AudioPolicyManagerALSA::~AudioPolicyManagerALSA()
{
}
}; // namespace android