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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.hardware.usb;
import android.os.Parcel;
import android.os.Parcelable;
/**
* Describes the status of a USB port.
* <p>
* This object is immutable.
* </p>
*
* @hide
*/
public final class UsbPortStatus implements Parcelable {
private final int mCurrentMode;
private final int mCurrentPowerRole;
private final int mCurrentDataRole;
private final int mSupportedRoleCombinations;
/** @hide */
public UsbPortStatus(int currentMode, int currentPowerRole, int currentDataRole,
int supportedRoleCombinations) {
mCurrentMode = currentMode;
mCurrentPowerRole = currentPowerRole;
mCurrentDataRole = currentDataRole;
mSupportedRoleCombinations = supportedRoleCombinations;
}
/**
* Returns true if there is anything connected to the port.
*
* @return True if there is anything connected to the port.
*/
public boolean isConnected() {
return mCurrentMode != 0;
}
/**
* Gets the current mode of the port.
*
* @return The current mode: {@link UsbPort#MODE_DFP}, {@link UsbPort#MODE_UFP},
* or 0 if nothing is connected.
*/
public int getCurrentMode() {
return mCurrentMode;
}
/**
* Gets the current power role of the port.
*
* @return The current power role: {@link UsbPort#POWER_ROLE_SOURCE},
* {@link UsbPort#POWER_ROLE_SINK}, or 0 if nothing is connected.
*/
public int getCurrentPowerRole() {
return mCurrentPowerRole;
}
/**
* Gets the current data role of the port.
*
* @return The current data role: {@link UsbPort#DATA_ROLE_HOST},
* {@link UsbPort#DATA_ROLE_DEVICE}, or 0 if nothing is connected.
*/
public int getCurrentDataRole() {
return mCurrentDataRole;
}
/**
* Returns true if the specified power and data role combination is supported
* given what is currently connected to the port.
*
* @param powerRole The power role to check: {@link UsbPort#POWER_ROLE_SOURCE}
* or {@link UsbPort#POWER_ROLE_SINK}, or 0 if no power role.
* @param dataRole The data role to check: either {@link UsbPort#DATA_ROLE_HOST}
* or {@link UsbPort#DATA_ROLE_DEVICE}, or 0 if no data role.
*/
public boolean isRoleCombinationSupported(int powerRole, int dataRole) {
return (mSupportedRoleCombinations &
UsbPort.combineRolesAsBit(powerRole, dataRole)) != 0;
}
/** @hide */
public int getSupportedRoleCombinations() {
return mSupportedRoleCombinations;
}
@Override
public String toString() {
return "UsbPortStatus{connected=" + isConnected()
+ ", currentMode=" + UsbPort.modeToString(mCurrentMode)
+ ", currentPowerRole=" + UsbPort.powerRoleToString(mCurrentPowerRole)
+ ", currentDataRole=" + UsbPort.dataRoleToString(mCurrentDataRole)
+ ", supportedRoleCombinations="
+ UsbPort.roleCombinationsToString(mSupportedRoleCombinations)
+ "}";
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(mCurrentMode);
dest.writeInt(mCurrentPowerRole);
dest.writeInt(mCurrentDataRole);
dest.writeInt(mSupportedRoleCombinations);
}
public static final Parcelable.Creator<UsbPortStatus> CREATOR =
new Parcelable.Creator<UsbPortStatus>() {
@Override
public UsbPortStatus createFromParcel(Parcel in) {
int currentMode = in.readInt();
int currentPowerRole = in.readInt();
int currentDataRole = in.readInt();
int supportedRoleCombinations = in.readInt();
return new UsbPortStatus(currentMode, currentPowerRole, currentDataRole,
supportedRoleCombinations);
}
@Override
public UsbPortStatus[] newArray(int size) {
return new UsbPortStatus[size];
}
};
}
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