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-rw-r--r--core/api/system-current.txt3
-rw-r--r--core/jni/android_media_AudioSystem.cpp32
-rw-r--r--media/java/android/media/AudioManager.java49
-rw-r--r--media/java/android/media/AudioSystem.java26
-rw-r--r--media/java/android/media/IAudioService.aidl12
-rw-r--r--services/core/java/com/android/server/audio/AudioService.java29
6 files changed, 150 insertions, 1 deletions
diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index 9ff0afee28bf..6eddc3c097c6 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -6189,6 +6189,7 @@ package android.media {
method @NonNull @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public int[] getSupportedSystemUsages();
method @IntRange(from=0) @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public int getVolumeIndexForAttributes(@NonNull android.media.AudioAttributes);
method public boolean isAudioServerRunning();
+ method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public boolean isBluetoothVariableLatencyEnabled();
method public boolean isHdmiSystemAudioSupported();
method @RequiresPermission(android.Manifest.permission.CALL_AUDIO_INTERCEPTION) public boolean isPstnCallAudioInterceptable();
method @RequiresPermission(android.Manifest.permission.ACCESS_ULTRASOUND) public boolean isUltrasoundSupported();
@@ -6207,6 +6208,7 @@ package android.media {
method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public void setActiveAssistantServiceUids(@NonNull int[]);
method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public boolean setAdditionalOutputDeviceDelay(@NonNull android.media.AudioDeviceInfo, @IntRange(from=0) long);
method public void setAudioServerStateCallback(@NonNull java.util.concurrent.Executor, @NonNull android.media.AudioManager.AudioServerStateCallback);
+ method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public void setBluetoothVariableLatencyEnabled(boolean);
method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public void setDeviceVolumeBehavior(@NonNull android.media.AudioDeviceAttributes, int);
method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public void setFocusRequestResult(@NonNull android.media.AudioFocusInfo, int, @NonNull android.media.audiopolicy.AudioPolicy);
method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public boolean setPreferredDeviceForCapturePreset(int, @NonNull android.media.AudioDeviceAttributes);
@@ -6214,6 +6216,7 @@ package android.media {
method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public boolean setPreferredDevicesForStrategy(@NonNull android.media.audiopolicy.AudioProductStrategy, @NonNull java.util.List<android.media.AudioDeviceAttributes>);
method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public void setSupportedSystemUsages(@NonNull int[]);
method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public void setVolumeIndexForAttributes(@NonNull android.media.AudioAttributes, int, int);
+ method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public boolean supportsBluetoothVariableLatency();
method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public void unregisterAudioPolicy(@NonNull android.media.audiopolicy.AudioPolicy);
method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public void unregisterAudioPolicyAsync(@NonNull android.media.audiopolicy.AudioPolicy);
method @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING) public void unregisterMuteAwaitConnectionCallback(@NonNull android.media.AudioManager.MuteAwaitConnectionCallback);
diff --git a/core/jni/android_media_AudioSystem.cpp b/core/jni/android_media_AudioSystem.cpp
index 77317d1c3c1a..47057a43bbe3 100644
--- a/core/jni/android_media_AudioSystem.cpp
+++ b/core/jni/android_media_AudioSystem.cpp
@@ -2952,6 +2952,30 @@ static jint android_media_AudioSystem_getDirectProfilesForAttributes(JNIEnv *env
return jStatus;
}
+static jboolean android_media_AudioSystem_supportsBluetoothVariableLatency(JNIEnv *env,
+ jobject thiz) {
+ bool supports;
+ if (AudioSystem::supportsBluetoothVariableLatency(&supports) != NO_ERROR) {
+ supports = false;
+ }
+ return supports;
+}
+
+static int android_media_AudioSystem_setBluetoothVariableLatencyEnabled(JNIEnv *env, jobject thiz,
+ jboolean enabled) {
+ return (jint)check_AudioSystem_Command(
+ AudioSystem::setBluetoothVariableLatencyEnabled(enabled));
+}
+
+static jboolean android_media_AudioSystem_isBluetoothVariableLatencyEnabled(JNIEnv *env,
+ jobject thiz) {
+ bool enabled;
+ if (AudioSystem::isBluetoothVariableLatencyEnabled(&enabled) != NO_ERROR) {
+ enabled = false;
+ }
+ return enabled;
+}
+
// ----------------------------------------------------------------------------
static const JNINativeMethod gMethods[] =
@@ -3104,7 +3128,13 @@ static const JNINativeMethod gMethods[] =
(void *)android_media_AudioSystem_getDirectPlaybackSupport},
{"getDirectProfilesForAttributes",
"(Landroid/media/AudioAttributes;Ljava/util/ArrayList;)I",
- (void *)android_media_AudioSystem_getDirectProfilesForAttributes}};
+ (void *)android_media_AudioSystem_getDirectProfilesForAttributes},
+ {"supportsBluetoothVariableLatency", "()Z",
+ (void *)android_media_AudioSystem_supportsBluetoothVariableLatency},
+ {"setBluetoothVariableLatencyEnabled", "(Z)I",
+ (void *)android_media_AudioSystem_setBluetoothVariableLatencyEnabled},
+ {"isBluetoothVariableLatencyEnabled", "()Z",
+ (void *)android_media_AudioSystem_isBluetoothVariableLatencyEnabled}};
static const JNINativeMethod gEventHandlerMethods[] = {
{"native_setup",
diff --git a/media/java/android/media/AudioManager.java b/media/java/android/media/AudioManager.java
index 399650d69e27..85911a37684d 100644
--- a/media/java/android/media/AudioManager.java
+++ b/media/java/android/media/AudioManager.java
@@ -8478,6 +8478,55 @@ public class AudioManager {
}
}
+ /**
+ * Requests if the implementation supports controlling the latency modes
+ * over the Bluetooth A2DP or LE Audio links.
+ *
+ * @return true if supported, false otherwise
+ *
+ * @hide
+ */
+ @SystemApi
+ @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING)
+ public boolean supportsBluetoothVariableLatency() {
+ try {
+ return getService().supportsBluetoothVariableLatency();
+ } catch (RemoteException e) {
+ throw e.rethrowFromSystemServer();
+ }
+ }
+
+ /**
+ * Enables or disables the variable Bluetooth latency control mechanism in the
+ * audio framework and the audio HAL. This does not apply to the latency mode control
+ * on the spatializer output as this is a built-in feature.
+ *
+ * @hide
+ */
+ @SystemApi
+ @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING)
+ public void setBluetoothVariableLatencyEnabled(boolean enabled) {
+ try {
+ getService().setBluetoothVariableLatencyEnabled(enabled);
+ } catch (RemoteException e) {
+ throw e.rethrowFromSystemServer();
+ }
+ }
+
+ /**
+ * Indicates if the variable Bluetooth latency control mechanism is enabled or disabled.
+ * @hide
+ */
+ @SystemApi
+ @RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING)
+ public boolean isBluetoothVariableLatencyEnabled() {
+ try {
+ return getService().isBluetoothVariableLatencyEnabled();
+ } catch (RemoteException e) {
+ throw e.rethrowFromSystemServer();
+ }
+ }
+
private final Object mMuteAwaitConnectionListenerLock = new Object();
@GuardedBy("mMuteAwaitConnectionListenerLock")
diff --git a/media/java/android/media/AudioSystem.java b/media/java/android/media/AudioSystem.java
index 097bb4165631..474ccc939a4c 100644
--- a/media/java/android/media/AudioSystem.java
+++ b/media/java/android/media/AudioSystem.java
@@ -2428,4 +2428,30 @@ public class AudioSystem
* Keep in sync with core/jni/android_media_DeviceCallback.h.
*/
final static int NATIVE_EVENT_ROUTING_CHANGE = 1000;
+
+
+ /**
+ * Requests if the implementation supports controlling the latency modes
+ * over the Bluetooth A2DP or LE Audio links.
+ *
+ * @return true if supported, false otherwise
+ *
+ * @hide
+ */
+ public static native boolean supportsBluetoothVariableLatency();
+
+ /**
+ * Enables or disables the variable Bluetooth latency control mechanism in the
+ * audio framework and the audio HAL. This does not apply to the latency mode control
+ * on the spatializer output as this is a built-in feature.
+ *
+ * @hide
+ */
+ public static native int setBluetoothVariableLatencyEnabled(boolean enabled);
+
+ /**
+ * Indicates if the variable Bluetooth latency control mechanism is enabled or disabled.
+ * @hide
+ */
+ public static native boolean isBluetoothVariableLatencyEnabled();
}
diff --git a/media/java/android/media/IAudioService.aidl b/media/java/android/media/IAudioService.aidl
index cfcd79aab4d2..9375a0d7f42f 100644
--- a/media/java/android/media/IAudioService.aidl
+++ b/media/java/android/media/IAudioService.aidl
@@ -517,4 +517,16 @@ interface IAudioService {
boolean handlesvolumeAdjustment);
AudioHalVersionInfo getHalVersion();
+
+ @EnforcePermission("MODIFY_AUDIO_ROUTING")
+ @JavaPassthrough(annotation="@android.annotation.RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING)")
+ boolean supportsBluetoothVariableLatency();
+
+ @EnforcePermission("MODIFY_AUDIO_ROUTING")
+ @JavaPassthrough(annotation="@android.annotation.RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING)")
+ void setBluetoothVariableLatencyEnabled(boolean enabled);
+
+ @EnforcePermission("MODIFY_AUDIO_ROUTING")
+ @JavaPassthrough(annotation="@android.annotation.RequiresPermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING)")
+ boolean isBluetoothVariableLatencyEnabled();
}
diff --git a/services/core/java/com/android/server/audio/AudioService.java b/services/core/java/com/android/server/audio/AudioService.java
index 01afd18233d6..e0d324a448ba 100644
--- a/services/core/java/com/android/server/audio/AudioService.java
+++ b/services/core/java/com/android/server/audio/AudioService.java
@@ -124,6 +124,8 @@ import android.media.audiopolicy.AudioPolicyConfig;
import android.media.audiopolicy.AudioProductStrategy;
import android.media.audiopolicy.AudioVolumeGroup;
import android.media.audiopolicy.IAudioPolicyCallback;
+import android.media.permission.ClearCallingIdentityContext;
+import android.media.permission.SafeCloseable;
import android.media.projection.IMediaProjection;
import android.media.projection.IMediaProjectionCallback;
import android.media.projection.IMediaProjectionManager;
@@ -11047,6 +11049,33 @@ public class AudioService extends IAudioService.Stub
}
}
+ /** @see AudioManager#supportsBluetoothVariableLatency() */
+ @android.annotation.EnforcePermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING)
+ public boolean supportsBluetoothVariableLatency() {
+ super.supportsBluetoothVariableLatency_enforcePermission();
+ try (SafeCloseable ignored = ClearCallingIdentityContext.create()) {
+ return AudioSystem.supportsBluetoothVariableLatency();
+ }
+ }
+
+ /** @see AudioManager#setBluetoothVariableLatencyEnabled(boolean) */
+ @android.annotation.EnforcePermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING)
+ public void setBluetoothVariableLatencyEnabled(boolean enabled) {
+ super.setBluetoothVariableLatencyEnabled_enforcePermission();
+ try (SafeCloseable ignored = ClearCallingIdentityContext.create()) {
+ AudioSystem.setBluetoothVariableLatencyEnabled(enabled);
+ }
+ }
+
+ /** @see AudioManager#isBluetoothVariableLatencyEnabled(boolean) */
+ @android.annotation.EnforcePermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING)
+ public boolean isBluetoothVariableLatencyEnabled() {
+ super.isBluetoothVariableLatencyEnabled_enforcePermission();
+ try (SafeCloseable ignored = ClearCallingIdentityContext.create()) {
+ return AudioSystem.isBluetoothVariableLatencyEnabled();
+ }
+ }
+
private final Object mExtVolumeControllerLock = new Object();
private IAudioPolicyCallback mExtVolumeController;
private void setExtVolumeController(IAudioPolicyCallback apc) {
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-12-28 17:17:30 +0000