From b735393c9ebd02597a78fff61b4a01c0a30d4439 Mon Sep 17 00:00:00 2001
From: Zim <zezeozue@google.com>
Date: Fri, 5 Nov 2021 19:02:45 +0000
Subject: [PATCH] Restart the MTP connection when changing transcode enabled

To workaround some issues with transcoded file sizes transferred
via MTP on Windows machines, we restart the MTP connection after
changing the transcode flag.

Test: Manual
Bug: 184117074
Bug: 190422448
Change-Id: I8d151117e1f5d23c3ec20e8c7a4b4546c96f2c84
---
 .../usb/UsbDetailsTranscodeMtpController.java               | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/com/android/settings/connecteddevice/usb/UsbDetailsTranscodeMtpController.java b/src/com/android/settings/connecteddevice/usb/UsbDetailsTranscodeMtpController.java
index bbaaa318c42..c4404992638 100644
--- a/src/com/android/settings/connecteddevice/usb/UsbDetailsTranscodeMtpController.java
+++ b/src/com/android/settings/connecteddevice/usb/UsbDetailsTranscodeMtpController.java
@@ -77,6 +77,12 @@ public class UsbDetailsTranscodeMtpController extends UsbDetailsController
     public boolean onPreferenceClick(Preference preference) {
         SystemProperties.set(TRANSCODE_MTP_SYS_PROP_KEY,
                 Boolean.toString(mSwitchPreference.isChecked()));
+
+        final long previousFunctions = mUsbBackend.getCurrentFunctions();
+        // Toggle the MTP connection to reload file sizes for files shared via MTP clients
+        mUsbBackend.setCurrentFunctions(previousFunctions & ~UsbManager.FUNCTION_MTP);
+        mUsbBackend.setCurrentFunctions(previousFunctions);
+
         return true;
     }