static int wince_cancel_transfer(
struct usbi_transfer *itransfer)
{
struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
struct wince_device_priv *priv = _device_priv(transfer->dev_handle->dev);
struct wince_transfer_priv *transfer_priv = (struct wince_transfer_priv*)usbi_transfer_get_os_priv(itransfer);
if (!UkwCancelTransfer(priv->dev, transfer_priv->pollable_fd.overlapped, UKW_TF_NO_WAIT)) {
return translate_driver_error(GetLastError());
}
return LIBUSB_SUCCESS;
}
static int wince_get_configuration(
struct libusb_device_handle *handle,
int *config)
{
struct wince_device_priv *priv = _device_priv(handle->dev);
UCHAR cv = 0;
if (!UkwGetConfig(priv->dev, &cv)) {
return translate_driver_error(GetLastError());
}
(*config) = cv;
return LIBUSB_SUCCESS;
}
static int wince_get_active_config_descriptor(
struct libusb_device *device,
unsigned char *buffer, size_t len, int *host_endian)
{
struct wince_device_priv *priv = _device_priv(device);
DWORD actualSize = len;
*host_endian = 0;
if (!UkwGetConfigDescriptor(priv->dev, UKW_ACTIVE_CONFIGURATION, buffer, len, &actualSize)) {
return translate_driver_error(GetLastError());
}
return actualSize;
}
static int wince_set_configuration(
struct libusb_device_handle *handle,
int config)
{
struct wince_device_priv *priv = _device_priv(handle->dev);
// Setting configuration 0 places the device in Address state.
// This should correspond to the "unconfigured state" required by
// libusb when the specified configuration is -1.
UCHAR cv = (config < 0) ? 0 : config;
if (!UkwSetConfig(priv->dev, cv)) {
return translate_driver_error(GetLastError());
}
return LIBUSB_SUCCESS;
}
static int wince_get_config_descriptor(
struct libusb_device *device,
uint8_t config_index,
unsigned char *buffer, size_t len, int *host_endian)
{
struct wince_device_priv *priv = _device_priv(device);
DWORD actualSize = len;
*host_endian = 0;
if (!UkwGetConfigDescriptor(priv->dev, config_index, buffer, len, &actualSize))
return translate_driver_error(GetLastError());
return actualSize;
}
static int init_device(struct libusb_device *dev, UKW_DEVICE drv_dev,
unsigned char bus_addr, unsigned char dev_addr)
{
struct wince_device_priv *priv = _device_priv(dev);
int r = LIBUSB_SUCCESS;
dev->bus_number = bus_addr;
dev->device_address = dev_addr;
priv->dev = drv_dev;
if (!UkwGetDeviceDescriptor(priv->dev, &(priv->desc))) {
r = translate_driver_error(GetLastError());
}
return r;
}
static int wince_get_device_list(
struct libusb_context *ctx,
struct discovered_devs **discdevs)
{
UKW_DEVICE devices[MAX_DEVICE_COUNT];
struct discovered_devs * new_devices = *discdevs;
DWORD count = 0, i;
struct libusb_device *dev = NULL;
unsigned char bus_addr, dev_addr;
unsigned long session_id;
BOOL success;
DWORD release_list_offset = 0;
int r = LIBUSB_SUCCESS;
success = UkwGetDeviceList(driver_handle, devices, MAX_DEVICE_COUNT, &count);
if (!success) {
int libusbErr = translate_driver_error(GetLastError());
usbi_err(ctx, "could not get devices: %s", windows_error_str(0));
return libusbErr;
}
for(i = 0; i < count; ++i) {
release_list_offset = i;
success = UkwGetDeviceAddress(devices[i], &bus_addr, &dev_addr, &session_id);
if (!success) {
r = translate_driver_error(GetLastError());
usbi_err(ctx, "could not get device address for %d: %s", i, windows_error_str(0));
goto err_out;
}
dev = usbi_get_device_by_session_id(ctx, session_id);
if (dev) {
usbi_dbg("using existing device for %d/%d (session %ld)",
bus_addr, dev_addr, session_id);
libusb_ref_device(dev);
// Release just this element in the device list (as we already hold a
// reference to it).
UkwReleaseDeviceList(driver_handle, &devices[i], 1);
release_list_offset++;
} else {
usbi_dbg("allocating new device for %d/%d (session %ld)",
bus_addr, dev_addr, session_id);
dev = usbi_alloc_device(ctx, session_id);
if (!dev) {
r = LIBUSB_ERROR_NO_MEM;
goto err_out;
}
r = init_device(dev, devices[i], bus_addr, dev_addr);
if (r < 0)
goto err_out;
r = usbi_sanitize_device(dev);
if (r < 0)
goto err_out;
}
new_devices = discovered_devs_append(new_devices, dev);
if (!discdevs) {
r = LIBUSB_ERROR_NO_MEM;
goto err_out;
}
safe_unref_device(dev);
}
*discdevs = new_devices;
return r;
err_out:
*discdevs = new_devices;
safe_unref_device(dev);
// Release the remainder of the unprocessed device list.
// The devices added to new_devices already will still be passed up to libusb,
// which can dispose of them at its leisure.
UkwReleaseDeviceList(driver_handle, &devices[release_list_offset], count - release_list_offset);
return r;
}