1 /* 2 * Copyright (C) 2021 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.connecteddevice.usb; 18 19 import static android.hardware.usb.UsbPortStatus.DATA_ROLE_DEVICE; 20 21 import android.content.Context; 22 import android.hardware.usb.UsbManager; 23 import android.os.SystemProperties; 24 25 import androidx.preference.Preference; 26 import androidx.preference.PreferenceCategory; 27 import androidx.preference.PreferenceScreen; 28 import androidx.preference.SwitchPreference; 29 30 import com.android.settings.R; 31 import com.android.settings.Utils; 32 33 /** 34 * This class controls the switch for setting if we should transcode files transferred via MTP over 35 * USB. 36 */ 37 public class UsbDetailsTranscodeMtpController extends UsbDetailsController 38 implements Preference.OnPreferenceClickListener { 39 private static final String TRANSCODE_MTP_SYS_PROP_KEY = "sys.fuse.transcode_mtp"; 40 private static final String PREFERENCE_KEY = "usb_transcode_mtp"; 41 42 private PreferenceCategory mPreferenceCategory; 43 private SwitchPreference mSwitchPreference; 44 UsbDetailsTranscodeMtpController(Context context, UsbDetailsFragment fragment, UsbBackend backend)45 public UsbDetailsTranscodeMtpController(Context context, UsbDetailsFragment fragment, 46 UsbBackend backend) { 47 super(context, fragment, backend); 48 } 49 50 51 @Override displayPreference(PreferenceScreen screen)52 public void displayPreference(PreferenceScreen screen) { 53 super.displayPreference(screen); 54 mPreferenceCategory = screen.findPreference(getPreferenceKey()); 55 mSwitchPreference = new SwitchPreference(mPreferenceCategory.getContext()); 56 mSwitchPreference.setTitle(R.string.usb_transcode_files); 57 mSwitchPreference.setOnPreferenceClickListener(this); 58 mSwitchPreference.setSummaryOn(R.string.usb_transcode_files_summary); 59 mPreferenceCategory.addPreference(mSwitchPreference); 60 } 61 62 @Override refresh(boolean connected, long functions, int powerRole, int dataRole)63 protected void refresh(boolean connected, long functions, int powerRole, int dataRole) { 64 if (mUsbBackend.areFunctionsSupported(UsbManager.FUNCTION_MTP | UsbManager.FUNCTION_PTP)) { 65 mFragment.getPreferenceScreen().addPreference(mPreferenceCategory); 66 } else { 67 mFragment.getPreferenceScreen().removePreference(mPreferenceCategory); 68 } 69 70 mSwitchPreference.setChecked( 71 SystemProperties.getBoolean(TRANSCODE_MTP_SYS_PROP_KEY, false)); 72 mPreferenceCategory.setEnabled( 73 connected && isDeviceInFileTransferMode(functions, dataRole)); 74 } 75 76 @Override onPreferenceClick(Preference preference)77 public boolean onPreferenceClick(Preference preference) { 78 SystemProperties.set(TRANSCODE_MTP_SYS_PROP_KEY, 79 Boolean.toString(mSwitchPreference.isChecked())); 80 return true; 81 } 82 83 @Override isAvailable()84 public boolean isAvailable() { 85 return !Utils.isMonkeyRunning(); 86 } 87 88 @Override getPreferenceKey()89 public String getPreferenceKey() { 90 return PREFERENCE_KEY; 91 } 92 isDeviceInFileTransferMode(long functions, int dataRole)93 private static boolean isDeviceInFileTransferMode(long functions, int dataRole) { 94 return dataRole == DATA_ROLE_DEVICE && ((functions & UsbManager.FUNCTION_MTP) != 0 95 || (functions & UsbManager.FUNCTION_PTP) != 0); 96 } 97 } 98