AudioManager: Bluetooth latency mode control (3c474bc7) · Commits · e / os / android_frameworks_base

core/api/system-current.txt

+3 −0

Original line number	Diff line number	Diff line
		@@ -6592,6 +6592,7 @@ 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();
		@@ -6610,6 +6611,7 @@ 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);
		@@ -6617,6 +6619,7 @@ 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);

core/jni/android_media_AudioSystem.cpp

+31 −1

Original line number	Diff line number	Diff line
		@@ -3201,6 +3201,30 @@ static jint android_media_AudioSystem_clearPreferredMixerAttributes(JNIEnv *env,
		return nativeToJavaStatus(status);
		}

		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[] =
		@@ -3364,7 +3388,13 @@ static const JNINativeMethod gMethods[] =
		{"getPreferredMixerAttributes", "(Landroid/media/AudioAttributes;ILjava/util/List;)I",
		(void *)android_media_AudioSystem_getPreferredMixerAttributes},
		{"clearPreferredMixerAttributes", "(Landroid/media/AudioAttributes;II)I",
		(void *)android_media_AudioSystem_clearPreferredMixerAttributes}};
		(void *)android_media_AudioSystem_clearPreferredMixerAttributes},
		{"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",

media/java/android/media/AudioManager.java

+49 −0

Original line number	Diff line number	Diff line
		@@ -8773,6 +8773,55 @@ 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();
		}
		}

		//====================================================================
		// Mute await connection

media/java/android/media/AudioSystem.java

+26 −0

Original line number	Diff line number	Diff line
		@@ -2476,4 +2476,30 @@ public class AudioSystem
		*/
		public static native int clearPreferredMixerAttributes(
		@NonNull AudioAttributes attributes, int portId, int uid);


		/**
		* 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();
		}

media/java/android/media/IAudioService.aidl

+12 −0

Original line number	Diff line number	Diff line
		@@ -587,4 +587,16 @@ interface IAudioService {
		IPreferredMixerAttributesDispatcher dispatcher);
		oneway void unregisterPreferredMixerAttributesDispatcher(
		IPreferredMixerAttributesDispatcher dispatcher);

		@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();
		}