SpatialAudio: Add API to switch buffer size am: a81d2c64bb (ed2bc6fa) · Commits · e / os / android_packages_modules_Bluetooth

android/app/jni/com_android_bluetooth_btservice_AdapterService.cpp

+34 −1

Original line number	Diff line number	Diff line
		@@ -71,6 +71,7 @@ static jmethodID method_addressConsolidateCallback;
		static jmethodID method_aclStateChangeCallback;
		static jmethodID method_discoveryStateChangeCallback;
		static jmethodID method_linkQualityReportCallback;
		static jmethodID method_switchBufferSizeCallback;
		static jmethodID method_setWakeAlarm;
		static jmethodID method_acquireWakeLock;
		static jmethodID method_releaseWakeLock;
		@@ -598,6 +599,34 @@ static void link_quality_report_callback(
		(jint)negative_acknowledgement_count);
		}

		static void switch_buffer_size_callback(RawAddress* bd_addr,
		bool is_low_latency_buffer_size) {

		if (!bd_addr) {
		ALOGE("Address is null in %s", __func__);
		return;
		}
		CallbackEnv sCallbackEnv(__func__);
		if (!sCallbackEnv.valid()) return;

		ScopedLocalRef<jbyteArray> addr(
		sCallbackEnv.get(), sCallbackEnv->NewByteArray(sizeof(RawAddress)));
		if (!addr.get()) {
		ALOGE("Error while allocating in: %s", __func__);
		return;
		}

		sCallbackEnv->SetByteArrayRegion(addr.get(), 0, sizeof(RawAddress),
		(jbyte*)bd_addr);

		ALOGV("%s: SwitchBufferSizeCallback: %s", __func__,
		is_low_latency_buffer_size ? "true" : "false");

		sCallbackEnv->CallVoidMethod(
		sJniCallbacksObj, method_switchBufferSizeCallback, addr.get(),
		(jboolean)is_low_latency_buffer_size);
		}

		static void callback_thread_event(bt_cb_thread_evt event) {
		if (event == ASSOCIATE_JVM) {
		JavaVMAttachArgs args;
		@@ -674,7 +703,8 @@ static bt_callbacks_t sBluetoothCallbacks = {sizeof(sBluetoothCallbacks),
		le_test_mode_recv_callback,
		energy_info_recv_callback,
		link_quality_report_callback,
		generate_local_oob_data_callback};
		generate_local_oob_data_callback,
		switch_buffer_size_callback};

		// The callback to call when the wake alarm fires.
		static alarm_cb sAlarmCallback;
		@@ -893,6 +923,9 @@ static void classInitNative(JNIEnv* env, jclass clazz) {
		method_linkQualityReportCallback = env->GetMethodID(
		jniCallbackClass, "linkQualityReportCallback", "(JIIIIII)V");

		method_switchBufferSizeCallback =
		env->GetMethodID(jniCallbackClass, "switchBufferSizeCallback", "([BZ)V");

		method_setWakeAlarm = env->GetMethodID(clazz, "setWakeAlarm", "(JZ)Z");
		method_acquireWakeLock =
		env->GetMethodID(clazz, "acquireWakeLock", "(Ljava/lang/String;)Z");

android/app/res/values/config.xml

+6 −0

Original line number	Diff line number	Diff line
		@@ -145,4 +145,10 @@
		-->
		<bool name="enable_gd_up_to_scanning_layer">true</bool>

		<!-- Package of fastpair service -->
		<string name="peripheral_link_package">com.google.android.gms</string>
		<!-- Service name of fastpair-->
		<string name="peripheral_link_service">.nearby.discovery.service.DiscoveryService</string>


		</resources>

android/app/src/com/android/bluetooth/btservice/AdapterService.java

+14 −0

Original line number	Diff line number	Diff line
		@@ -811,6 +811,20 @@ public class AdapterService extends Service {
		}
		}

		void switchBufferSizeCallback(byte[] address, boolean isLowLatencyBufferSize) {
		BluetoothDevice device = getDeviceFromByte(address);
		// Send intent to fastpair
		Intent switchBufferSizeIntent = new Intent(BluetoothDevice.ACTION_SWITCH_BUFFER_SIZE);
		switchBufferSizeIntent.setClassName(
		getString(com.android.bluetooth.R.string.peripheral_link_package),
		getString(com.android.bluetooth.R.string.peripheral_link_package)
		+ getString(com.android.bluetooth.R.string.peripheral_link_service));
		switchBufferSizeIntent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
		switchBufferSizeIntent.putExtra(
		BluetoothDevice.EXTRA_LOW_LATENCY_BUFFER_SIZE, isLowLatencyBufferSize);
		sendBroadcast(switchBufferSizeIntent);
		}

		/**
		* Enable/disable BluetoothInCallService
		*

android/app/src/com/android/bluetooth/btservice/JniCallbacks.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -106,4 +106,8 @@ final class JniCallbacks {
		packets_not_receive_count, negative_acknowledgement_count);
		}

		void switchBufferSizeCallback(byte[] mac_address, boolean is_low_latency_buffer_size) {
		mAdapterService.switchBufferSizeCallback(mac_address, is_low_latency_buffer_size);
		}

		}

framework/java/android/bluetooth/BluetoothDevice.java

+30 −0

Original line number	Diff line number	Diff line
		@@ -231,6 +231,25 @@ public final class BluetoothDevice implements Parcelable, Attributable {
		public static final String ACTION_BATTERY_LEVEL_CHANGED =
		"android.bluetooth.device.action.BATTERY_LEVEL_CHANGED";

		/**
		* Broadcast Action: Indicates the audio buffer size should be switched
		* between a low latency buffer size and a higher and larger latency buffer size.
		* <p>Always contains the extra fields {@link #EXTRA_DEVICE} and {@link
		* #EXTRA_LOW_LATENCY_BUFFER_SIZE}.
		*
		* @hide
		*/
		@SuppressLint("ActionValue")
		@RequiresBluetoothConnectPermission
		@RequiresPermission(allOf = {
		android.Manifest.permission.BLUETOOTH_CONNECT,
		android.Manifest.permission.BLUETOOTH_PRIVILEGED,
		})
		@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
		@SystemApi
		public static final String ACTION_SWITCH_BUFFER_SIZE =
		"android.bluetooth.device.action.SWITCH_BUFFER_SIZE";

		/**
		* Used as an Integer extra field in {@link #ACTION_BATTERY_LEVEL_CHANGED}
		* intent. It contains the most recently retrieved battery level information
		@@ -310,6 +329,17 @@ public final class BluetoothDevice implements Parcelable, Attributable {
		*/
		public static final String EXTRA_PREVIOUS_BOND_STATE =
		"android.bluetooth.device.extra.PREVIOUS_BOND_STATE";

		/**
		* Used as a boolean extra field to indicate if audio buffer size is low latency or not
		*
		* @hide
		*/
		@SuppressLint("ActionValue")
		@SystemApi
		public static final String EXTRA_LOW_LATENCY_BUFFER_SIZE =
		"android.bluetooth.device.extra.LOW_LATENCY_BUFFER_SIZE";

		/**
		* Indicates the remote device is not bonded (paired).
		* <p>There is no shared link key with the remote device, so communication