Add prepareToDisconnectExternalDevice.
When an external device is disconnected, some HALs rely on the early
disconnect indication to immediately abort any active read/write
operations on drivers to avoid problems with HW interfaces. In that
case, APM will broadcast the device disconnection before the streams are
closed. However, in AOSP AIDL HAL, the device may not be disconnected
when there are active configurations. In that case, a new way to notify
the HAL to prepare to disconnect external device is required.
Bug: 277955540
Test: atest audiopolicy_tests
Test: connect/disconnect USB device
Change-Id: Ie5868ac5efedb3dbdd8b4c2e3225c0c4085806a1
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 56a692b..b678662 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -116,14 +116,13 @@
}
void AudioPolicyManager::broadcastDeviceConnectionState(const sp<DeviceDescriptor> &device,
- audio_policy_dev_state_t state)
+ media::DeviceConnectedState state)
{
audio_port_v7 devicePort;
device->toAudioPort(&devicePort);
- if (status_t status = mpClientInterface->setDeviceConnectedState(
- &devicePort, state == AUDIO_POLICY_DEVICE_STATE_AVAILABLE);
+ if (status_t status = mpClientInterface->setDeviceConnectedState(&devicePort, state);
status != OK) {
- ALOGE("Error %d while setting connected state for device %s", status,
+ ALOGE("Error %d while setting connected state for device %s", state,
device->getDeviceTypeAddr().toString(false).c_str());
}
}
@@ -206,14 +205,14 @@
// Before checking outputs, broadcast connect event to allow HAL to retrieve dynamic
// parameters on newly connected devices (instead of opening the outputs...)
- broadcastDeviceConnectionState(device, state);
+ broadcastDeviceConnectionState(device, media::DeviceConnectedState::CONNECTED);
if (checkOutputsForDevice(device, state, outputs) != NO_ERROR) {
mAvailableOutputDevices.remove(device);
mHwModules.cleanUpForDevice(device);
- broadcastDeviceConnectionState(device, AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE);
+ broadcastDeviceConnectionState(device, media::DeviceConnectedState::DISCONNECTED);
return INVALID_OPERATION;
}
@@ -235,8 +234,9 @@
ALOGV("%s() disconnecting output device %s", __func__, device->toString().c_str());
- // Send Disconnect to HALs
- broadcastDeviceConnectionState(device, state);
+ // Notify the HAL to prepare to disconnect device
+ broadcastDeviceConnectionState(
+ device, media::DeviceConnectedState::PREPARE_TO_DISCONNECT);
// remove device from available output devices
mAvailableOutputDevices.remove(device);
@@ -245,6 +245,9 @@
checkOutputsForDevice(device, state, outputs);
+ // Send Disconnect to HALs
+ broadcastDeviceConnectionState(device, media::DeviceConnectedState::DISCONNECTED);
+
// Reset active device codec
device->setEncodedFormat(AUDIO_FORMAT_DEFAULT);
@@ -384,12 +387,12 @@
// Before checking intputs, broadcast connect event to allow HAL to retrieve dynamic
// parameters on newly connected devices (instead of opening the inputs...)
- broadcastDeviceConnectionState(device, state);
+ broadcastDeviceConnectionState(device, media::DeviceConnectedState::CONNECTED);
if (checkInputsForDevice(device, state) != NO_ERROR) {
mAvailableInputDevices.remove(device);
- broadcastDeviceConnectionState(device, AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE);
+ broadcastDeviceConnectionState(device, media::DeviceConnectedState::DISCONNECTED);
mHwModules.cleanUpForDevice(device);
@@ -407,13 +410,17 @@
ALOGV("%s() disconnecting input device %s", __func__, device->toString().c_str());
- // Set Disconnect to HALs
- broadcastDeviceConnectionState(device, state);
+ // Notify the HAL to prepare to disconnect device
+ broadcastDeviceConnectionState(
+ device, media::DeviceConnectedState::PREPARE_TO_DISCONNECT);
mAvailableInputDevices.remove(device);
checkInputsForDevice(device, state);
+ // Set Disconnect to HALs
+ broadcastDeviceConnectionState(device, media::DeviceConnectedState::DISCONNECTED);
+
// remove device from mReportedFormatsMap cache
mReportedFormatsMap.erase(device);
} break;
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index 2924ee1..dc82d54 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -35,6 +35,7 @@
#include <media/PatchBuilder.h>
#include "AudioPolicyInterface.h"
+#include <android/media/DeviceConnectedState.h>
#include <android/media/audio/common/AudioPort.h>
#include <AudioPolicyManagerObserver.h>
#include <AudioPolicyConfig.h>
@@ -1060,13 +1061,16 @@
void updateAudioProfiles(const sp<DeviceDescriptor>& devDesc, audio_io_handle_t ioHandle,
AudioProfileVector &profiles);
+ // Notify the policy client to prepare for disconnecting external device.
+ void prepareToDisconnectExternalDevice(const sp<DeviceDescriptor> &device);
+
// Notify the policy client of any change of device state with AUDIO_IO_HANDLE_NONE,
// so that the client interprets it as global to audio hardware interfaces.
// It can give a chance to HAL implementer to retrieve dynamic capabilities associated
// to this device for example.
// TODO avoid opening stream to retrieve capabilities of a profile.
void broadcastDeviceConnectionState(const sp<DeviceDescriptor> &device,
- audio_policy_dev_state_t state);
+ media::DeviceConnectedState state);
// updates device caching and output for streams that can influence the
// routing of notifications