static int wince_set_interface_altsetting(
struct libusb_device_handle *handle,
int interface_number, int altsetting)
{
struct wince_device_priv *priv = _device_priv(handle->dev);
if (!UkwSetInterfaceAlternateSetting(priv->dev, interface_number, altsetting)) {
return translate_driver_error(GetLastError());
}
return LIBUSB_SUCCESS;
}
static int wince_release_interface(
struct libusb_device_handle *handle,
int interface_number)
{
struct wince_device_priv *priv = _device_priv(handle->dev);
if (!UkwSetInterfaceAlternateSetting(priv->dev, interface_number, 0)) {
return translate_driver_error(GetLastError());
}
if (!UkwReleaseInterface(priv->dev, interface_number)) {
return translate_driver_error(GetLastError());
}
return LIBUSB_SUCCESS;
}
static void performInterfaceOperation(char line[])
{
switch(line[0])
{
case 'c':
case 'r':
{
// Claiming and releasing interfaces is almost the same, so
// handle it with common code
BOOL claiming = line[0] == 'c';
const char* opStr = claiming ? "claiming" : "releasing";
++line;
DWORD devIdx = 0;
line = parseNumber(line, devIdx);
if (!line) {
printf("Please provide a decimal device number following the command\n");
return;
}
if (devIdx >= gDeviceListSize || devIdx < 0) {
printf("Invalid device index '%d' provided\n", devIdx);
return;
}
// Parse the interface number
DWORD interfaceNumber = 0;
line = parseNumber(line, interfaceNumber);
if (!line) {
printf("Please provide a decimal interface number following the device number");
return;
}
// All parameters decoded, perform the operation
UKW_DEVICE device = gDeviceList[devIdx];
BOOL status = FALSE;
if (claiming)
status = UkwClaimInterface(device, interfaceNumber);
else
status = UkwReleaseInterface(device, interfaceNumber);
if (status) {
printf("Success when %s interface %d\n", opStr, interfaceNumber);
} else {
printf("Failure when attempting %s of interface %d: %d\n", opStr, interfaceNumber, GetLastError());
}
break;
}
case 'a':
{
++line;
DWORD devIdx = 0;
line = parseNumber(line, devIdx);
if (!line) {
printf("Please provide a decimal device number following the command\n");
return;
}
if (devIdx >= gDeviceListSize || devIdx < 0) {
printf("Invalid device index '%d' provided\n", devIdx);
return;
}
// Parse the interface number
DWORD interfaceNumber = 0;
line = parseNumber(line, interfaceNumber);
if (!line) {
printf("Please provide a decimal interface number following the device number");
return;
}
// Parse the alternate setting number
DWORD altSetting = 0;
line = parseNumber(line, altSetting);
if (!line) {
printf("Please provide a decimal alternate setting number following the interface number");
return;
}
// All parameters decoded, perform the operation
UKW_DEVICE device = gDeviceList[devIdx];
if (UkwSetInterfaceAlternateSetting(device, interfaceNumber, altSetting)) {
printf("Successfully set interface %d to alternate setting %d\n",
interfaceNumber, altSetting);
} else {
printf("Failed to set interface %d to alternate setting %d: %d\n",
interfaceNumber, altSetting, GetLastError());
}
break;
}
default:
printf("Unknown interface operation requested, not doing anything\n");
break;
}
}
