Throw if AOHD is inited without a underlying DSP

This prevents an intermediate state where a AlwaysOnHotwordDetector is
initialized, but doesn't have an underlying session to connect to.

Throw IllegalStateException if VIS creates an AOHD when no module
exists.

Bug: 272147641
Fixes: 269165460
Test: CtsVoiceInteractionTestCases
Test: Manual verification of hotword
Change-Id: I1e3d448fbb3e100fd963cc704397a409a4d8b8f0

core/java/android/service/voice/AlwaysOnHotwordDetector.java

@@ -30,6 +30,8 @@ import android.annotation.SystemApi;
 import android.annotation.TestApi;
 import android.app.ActivityThread;
 import android.app.compat.CompatChanges;
+import android.compat.annotation.ChangeId;
+import android.compat.annotation.EnabledSince;
 import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.Intent;
@@ -257,6 +259,16 @@ public class AlwaysOnHotwordDetector extends AbstractDetector {
     })
     public @interface ModelParams {}
 
+    /**
+     * Gates returning {@code IllegalStateException} in {@link #initialize(
+     * PersistableBundle, SharedMemory, SoundTrigger.ModuleProperties)} when no DSP module
+     * is available. If the change is not enabled, the existing behavior of not throwing an
+     * exception and delivering {@link STATE_HARDWARE_UNAVAILABLE} is retained.
+     */
+    @ChangeId
+    @EnabledSince(targetSdkVersion = Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    static final long THROW_ON_INITIALIZE_IF_NO_DSP = 269165460L;
+
     /**
      * Controls the sensitivity threshold adjustment factor for a given model.
      * Negative value corresponds to less sensitive model (high threshold) and
@@ -870,8 +882,10 @@ public class AlwaysOnHotwordDetector extends AbstractDetector {
                                 .equals(SoundTrigger.FAKE_HAL_ARCH))
                         .findFirst()
                         .orElse(null);
-                // (@atneya) intentionally let a null moduleProperties through until
-                // all CTS tests are fixed
+                if (CompatChanges.isChangeEnabled(THROW_ON_INITIALIZE_IF_NO_DSP) &&
+                        moduleProperties == null) {
+                    throw new IllegalStateException("No DSP module available to attach to");
+                }
             }
             mSoundTriggerSession =
                     mModelManagementService.createSoundTriggerSessionAsOriginator(
@@ -1753,17 +1767,19 @@ public class AlwaysOnHotwordDetector extends AbstractDetector {
                 }
             }
 
-            ModuleProperties dspModuleProperties;
-            try {
-                dspModuleProperties =
-                        mSoundTriggerSession.getDspModuleProperties();
-            } catch (RemoteException e) {
-                throw e.rethrowFromSystemServer();
-            }
+            if (!CompatChanges.isChangeEnabled(THROW_ON_INITIALIZE_IF_NO_DSP)) {
+                ModuleProperties dspModuleProperties;
+                try {
+                    dspModuleProperties =
+                            mSoundTriggerSession.getDspModuleProperties();
+                } catch (RemoteException e) {
+                    throw e.rethrowFromSystemServer();
+                }
 
-            // No DSP available
-            if (dspModuleProperties == null) {
-                return STATE_HARDWARE_UNAVAILABLE;
+                // No DSP available
+                if (dspModuleProperties == null) {
+                    return STATE_HARDWARE_UNAVAILABLE;
+                }
             }
 
             return STATE_NOT_READY;

core/java/android/service/voice/VoiceInteractionService.java

@@ -463,6 +463,10 @@ public class VoiceInteractionService extends Service {
      * @param callback The callback to notify of detection events.
      * @return An always-on hotword detector for the given keyphrase and locale.
      *
+     * @throws SecurityException if the caller does not hold required permissions
+     * @throws IllegalStateException if there is no DSP hardware support when a caller has a
+     * target SDK of API level 34 or above.
+     *
      * @deprecated Use {@link #createAlwaysOnHotwordDetector(String, Locale, Executor,
      *             AlwaysOnHotwordDetector.Callback)} instead.
      * @hide
@@ -500,6 +504,10 @@ public class VoiceInteractionService extends Service {
      * @param callback The callback to notify of detection events.
      * @return An always-on hotword detector for the given keyphrase and locale.
      *
+     * @throws SecurityException if the caller does not hold required permissions
+     * @throws IllegalStateException if there is no DSP hardware support when a caller has a
+     * target SDK of API level 34 or above.
+     *
      * @hide
      */
     @SystemApi
@@ -581,6 +589,11 @@ public class VoiceInteractionService extends Service {
      * @param callback The callback to notify of detection events.
      * @return An always-on hotword detector for the given keyphrase and locale.
      *
+     * @throws SecurityException if the caller does not hold required permissions
+     * @throws IllegalStateException if the hotword detection service is not set, isolated process
+     * is not set, or there is no DSP hardware support when a caller has a target SDK of API
+     * level 34 or above.
+     *
      * @deprecated Use {@link #createAlwaysOnHotwordDetector(String, Locale, PersistableBundle,
      *             SharedMemory, Executor, AlwaysOnHotwordDetector.Callback)} instead.
      * @hide
@@ -631,6 +644,11 @@ public class VoiceInteractionService extends Service {
      * @param callback The callback to notify of detection events.
      * @return An always-on hotword detector for the given keyphrase and locale.
      *
+     * @throws SecurityException if the caller does not hold required permissions
+     * @throws IllegalStateException if the hotword detection service is not set, isolated process
+     * is not set, or there is no DSP hardware support when a caller has a target SDK of API level
+     * 34 or above.
+     *
      * @hide
      */
     @SystemApi