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Notify CameraService on USB host events

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For handling external (USB) cameras when using
 lazy camera HALs.

Test: atest cameraservice_test

Bug: 191248460

Change-Id: I65b683e449577f576dc210a768ca7756394742a3
This commit is contained in:
Valentin Iftime
2021-08-09 16:02:48 +02:00
parent 0b77c138ad
commit e66a2d5f88
1 changed files with 40 additions and 0 deletions
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40
services/core/java/com/android/server/camera/CameraServiceProxy.java
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@@ -46,6 +46,8 @@ import android.hardware.camera2.CaptureRequest;
import android.hardware.devicestate.DeviceStateManager;
import android.hardware.devicestate.DeviceStateManager.FoldStateListener;
import android.hardware.display.DisplayManager;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbManager;
import android.media.AudioManager;
import android.nfc.INfcAdapter;
import android.os.Binder;
@@ -335,6 +337,16 @@ public class CameraServiceProxy extends SystemService
switchUserLocked(mLastUser);
}
break;
case UsbManager.ACTION_USB_DEVICE_ATTACHED:
case UsbManager.ACTION_USB_DEVICE_DETACHED:
synchronized (mLock) {
UsbDevice device = intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
if (device != null) {
notifyUsbDeviceHotplugLocked(device,
action.equals(UsbManager.ACTION_USB_DEVICE_ATTACHED));
}
}
break;
default:
break; // do nothing
}
@@ -645,6 +657,8 @@ public class CameraServiceProxy extends SystemService
filter.addAction(Intent.ACTION_USER_INFO_CHANGED);
filter.addAction(Intent.ACTION_MANAGED_PROFILE_ADDED);
filter.addAction(Intent.ACTION_MANAGED_PROFILE_REMOVED);
filter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED);
filter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED);
mContext.registerReceiver(mIntentReceiver, filter);
publishBinderService(CAMERA_SERVICE_PROXY_BINDER_NAME, mCameraServiceProxy);
@@ -961,6 +975,32 @@ public class CameraServiceProxy extends SystemService
return true;
}
private boolean notifyUsbDeviceHotplugLocked(@NonNull UsbDevice device, boolean attached) {
// Only handle external USB camera devices
if (device.getHasVideoCapture()) {
// Forward the usb hotplug event to the native camera service running in the
// cameraserver
// process.
ICameraService cameraService = getCameraServiceRawLocked();
if (cameraService == null) {
Slog.w(TAG, "Could not notify cameraserver, camera service not available.");
return false;
}
try {
int eventType = attached ? ICameraService.EVENT_USB_DEVICE_ATTACHED
: ICameraService.EVENT_USB_DEVICE_DETACHED;
mCameraServiceRaw.notifySystemEvent(eventType, new int[]{device.getDeviceId()});
} catch (RemoteException e) {
Slog.w(TAG, "Could not notify cameraserver, remote exception: " + e);
// Not much we can do if camera service is dead.
return false;
}
return true;
}
return false;
}
private void updateActivityCount(CameraSessionStats cameraState) {
String cameraId = cameraState.getCameraId();
int newCameraState = cameraState.getNewCameraState();