Throttle number of sound trigger operations / day
It is not clear when the day should start. Further a day might have
25 hours in the case of daylight savings time.
Hence a day in this case is the last 24 hours, not a calendar day.
Keeping track of the time of each operation might waste memory as we
don't need that much precision.
Hence keep track how many operations were performed in the last 24
hours in buckets of hours. If the total count reaches a maximum suppress
any further operations.
The maximum is configurable via global settings. It can be updated
by apps that have the appropriate permissions. Hence if the default
value turns out to be incorrect, it can be adjusted after release.
This does not throttle based on battery state as it is better to
completely unload the sound model to not even have a detection event.
Test: atest SoundTriggerDetectionServiceTests (separate CL)
atest android.provider.SettingsBackupTest
Bug: 73829108
Change-Id: Ied8570b60b61b6a055bd2576d1502c1b36424efa
diff --git a/core/proto/android/providers/settings.proto b/core/proto/android/providers/settings.proto
index da9e67a..4e781d6 100644
--- a/core/proto/android/providers/settings.proto
+++ b/core/proto/android/providers/settings.proto
@@ -469,6 +469,7 @@
optional SettingProto autofill_compat_allowed_packages = 357 [ (android.privacy).dest = DEST_AUTOMATIC ];
optional SettingProto hidden_api_blacklist_exemptions = 358 [ (android.privacy).dest = DEST_AUTOMATIC ];
optional SettingProto sound_trigger_detection_service_op_timeout = 387 [ (android.privacy).dest = DEST_AUTOMATIC ];
+ optional SettingProto max_sound_trigger_detection_service_ops_per_day = 388 [ (android.privacy).dest = DEST_AUTOMATIC ];
// Subscription to be used for voice call on a multi sim device. The
// supported values are 0 = SUB1, 1 = SUB2 and etc.
optional SettingProto multi_sim_voice_call_subscription = 359 [ (android.privacy).dest = DEST_AUTOMATIC ];
@@ -506,7 +507,7 @@
optional SettingsProto backup_agent_timeout_parameters = 386;
// Please insert fields in the same order as in
// frameworks/base/core/java/android/provider/Settings.java.
- // Next tag = 388;
+ // Next tag = 389;
}
message SecureSettingsProto {
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index 3be72dd..236980d 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -267,6 +267,7 @@
Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL_MAX,
Settings.Global.LTE_SERVICE_FORCED,
Settings.Global.MAX_NOTIFICATION_ENQUEUE_RATE,
+ Settings.Global.MAX_SOUND_TRIGGER_DETECTION_SERVICE_OPS_PER_DAY,
Settings.Global.MDC_INITIAL_MAX_RETRY,
Settings.Global.MHL_INPUT_SWITCHING_ENABLED,
Settings.Global.MHL_POWER_CHARGE_ENABLED,