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package org.libsdl.app;
import android.hardware.usb.*;
import android.os.Build;
import android.util.Log;
import java.util.Arrays;
class HIDDeviceUSB implements HIDDevice {
private static final String TAG = "hidapi";
protected HIDDeviceManager mManager;
protected UsbDevice mDevice;
protected int mInterfaceIndex;
protected int mInterface;
protected int mDeviceId;
protected UsbDeviceConnection mConnection;
protected UsbEndpoint mInputEndpoint;
protected UsbEndpoint mOutputEndpoint;
protected InputThread mInputThread;
protected boolean mRunning;
protected boolean mFrozen;
public HIDDeviceUSB(HIDDeviceManager manager, UsbDevice usbDevice, int interface_index) {
mManager = manager;
mDevice = usbDevice;
mInterfaceIndex = interface_index;
mInterface = mDevice.getInterface(mInterfaceIndex).getId();
mDeviceId = manager.getDeviceIDForIdentifier(getIdentifier());
mRunning = false;
}
public String getIdentifier() {
return String.format("%s/%x/%x/%d", mDevice.getDeviceName(), mDevice.getVendorId(), mDevice.getProductId(), mInterfaceIndex);
}
@Override
public int getId() {
return mDeviceId;
}
@Override
public int getVendorId() {
return mDevice.getVendorId();
}
@Override
public int getProductId() {
return mDevice.getProductId();
}
@Override
public String getSerialNumber() {
String result = null;
if (Build.VERSION.SDK_INT >= 21) {
try {
result = mDevice.getSerialNumber();
}
catch (SecurityException exception) {
Log.w(TAG, "App permissions mean we cannot get serial number for device " + getDeviceName() + " message: " + exception.getMessage());
result = "";
}
}
if (result == null) {
result = "";
}
return result;
}
@Override
public int getVersion() {
return 0;
}
@Override
public String getManufacturerName() {
String result = null;
if (Build.VERSION.SDK_INT >= 21) {
result = mDevice.getManufacturerName();
}
if (result == null) {
result = String.format("%x", getVendorId());
}
return result;
}
@Override
public String getProductName() {
String result = null;
if (Build.VERSION.SDK_INT >= 21) {
result = mDevice.getProductName();
}
if (result == null) {
result = String.format("%x", getProductId());
}
return result;
}
@Override
public UsbDevice getDevice() {
return mDevice;
}
public String getDeviceName() {
return getManufacturerName() + " " + getProductName() + "(0x" + String.format("%x", getVendorId()) + "/0x" + String.format("%x", getProductId()) + ")";
}
@Override
public boolean open() {
mConnection = mManager.getUSBManager().openDevice(mDevice);
if (mConnection == null) {
Log.w(TAG, "Unable to open USB device " + getDeviceName());
return false;
}
// Force claim our interface
UsbInterface iface = mDevice.getInterface(mInterfaceIndex);
if (!mConnection.claimInterface(iface, true)) {
Log.w(TAG, "Failed to claim interfaces on USB device " + getDeviceName());
close();
return false;
}
// Find the endpoints
for (int j = 0; j < iface.getEndpointCount(); j++) {
UsbEndpoint endpt = iface.getEndpoint(j);
switch (endpt.getDirection()) {
case UsbConstants.USB_DIR_IN:
if (mInputEndpoint == null) {
mInputEndpoint = endpt;
}
break;
case UsbConstants.USB_DIR_OUT:
if (mOutputEndpoint == null) {
mOutputEndpoint = endpt;
}
break;
}
}
// Make sure the required endpoints were present
if (mInputEndpoint == null || mOutputEndpoint == null) {
Log.w(TAG, "Missing required endpoint on USB device " + getDeviceName());
close();
return false;
}
// Start listening for input
mRunning = true;
mInputThread = new InputThread();
mInputThread.start();
return true;
}
@Override
public int sendFeatureReport(byte[] report) {
int res = -1;
int offset = 0;
int length = report.length;
boolean skipped_report_id = false;
byte report_number = report[0];
if (report_number == 0x0) {
++offset;
--length;
skipped_report_id = true;
}
res = mConnection.controlTransfer(
UsbConstants.USB_TYPE_CLASS | 0x01 /*RECIPIENT_INTERFACE*/ | UsbConstants.USB_DIR_OUT,
0x09/*HID set_report*/,
(3/*HID feature*/ << 8) | report_number,
mInterface,
report, offset, length,
1000/*timeout millis*/);
if (res < 0) {
Log.w(TAG, "sendFeatureReport() returned " + res + " on device " + getDeviceName());
return -1;
}
if (skipped_report_id) {
++length;
}
return length;
}
@Override
public int sendOutputReport(byte[] report) {
int r = mConnection.bulkTransfer(mOutputEndpoint, report, report.length, 1000);
if (r != report.length) {
Log.w(TAG, "sendOutputReport() returned " + r + " on device " + getDeviceName());
}
return r;
}
@Override
public boolean getFeatureReport(byte[] report) {
int res = -1;
int offset = 0;
int length = report.length;
boolean skipped_report_id = false;
byte report_number = report[0];
if (report_number == 0x0) {
/* Offset the return buffer by 1, so that the report ID
will remain in byte 0. */
++offset;
--length;
skipped_report_id = true;
}
res = mConnection.controlTransfer(
UsbConstants.USB_TYPE_CLASS | 0x01 /*RECIPIENT_INTERFACE*/ | UsbConstants.USB_DIR_IN,
0x01/*HID get_report*/,
(3/*HID feature*/ << 8) | report_number,
mInterface,
report, offset, length,
1000/*timeout millis*/);
if (res < 0) {
Log.w(TAG, "getFeatureReport() returned " + res + " on device " + getDeviceName());
return false;
}
if (skipped_report_id) {
++res;
++length;
}
byte[] data;
if (res == length) {
data = report;
} else {
data = Arrays.copyOfRange(report, 0, res);
}
mManager.HIDDeviceFeatureReport(mDeviceId, data);
return true;
}
@Override
public void close() {
mRunning = false;
if (mInputThread != null) {
while (mInputThread.isAlive()) {
mInputThread.interrupt();
try {
mInputThread.join();
} catch (InterruptedException e) {
// Keep trying until we're done
}
}
mInputThread = null;
}
if (mConnection != null) {
UsbInterface iface = mDevice.getInterface(mInterfaceIndex);
mConnection.releaseInterface(iface);
mConnection.close();
mConnection = null;
}
}
@Override
public void shutdown() {
close();
mManager = null;
}
@Override
public void setFrozen(boolean frozen) {
mFrozen = frozen;
}
protected class InputThread extends Thread {
@Override
public void run() {
int packetSize = mInputEndpoint.getMaxPacketSize();
byte[] packet = new byte[packetSize];
while (mRunning) {
int r;
try
{
r = mConnection.bulkTransfer(mInputEndpoint, packet, packetSize, 1000);
}
catch (Exception e)
{
Log.v(TAG, "Exception in UsbDeviceConnection bulktransfer: " + e);
break;
}
if (r < 0) {
// Could be a timeout or an I/O error
}
if (r > 0) {
byte[] data;
if (r == packetSize) {
data = packet;
} else {
data = Arrays.copyOfRange(packet, 0, r);
}
if (!mFrozen) {
mManager.HIDDeviceInputReport(mDeviceId, data);
}
}
}
}
}
}
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