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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2020 Emmanuel Pacaud <emmanuel@gnome.org>
*
* SPDX-License-Identifier: LGPL-2.1+
*/
/**
* SECTION:gusb-endpoint
* @short_description: GLib wrapper around a USB endpoint.
*
* This object is a thin glib wrapper around a libusb_endpoint_descriptor.
*
* All the data is copied when the object is created and the original
* descriptor can be destroyed any at point.
*/
#include "config.h"
#include "gusb-endpoint.h"
#include "gusb-endpoint-private.h"
struct _GUsbEndpoint
{
GObject parent_instance;
struct libusb_endpoint_descriptor endpoint_descriptor;
GBytes *extra;
};
G_DEFINE_TYPE (GUsbEndpoint, g_usb_endpoint, G_TYPE_OBJECT)
static void
g_usb_endpoint_finalize (GObject *object)
{
GUsbEndpoint *endpoint = G_USB_ENDPOINT (object);
g_bytes_unref (endpoint->extra);
G_OBJECT_CLASS (g_usb_endpoint_parent_class)->finalize (object);
}
static void
g_usb_endpoint_class_init (GUsbEndpointClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = g_usb_endpoint_finalize;
}
static void
g_usb_endpoint_init (GUsbEndpoint *endpoint)
{
}
/**
* _g_usb_endpoint_new:
*
* Return value: a new #GUsbEndpoint object.
*
* Since: 0.3.3
**/
GUsbEndpoint *
_g_usb_endpoint_new (const struct libusb_endpoint_descriptor *endpoint_descriptor)
{
GUsbEndpoint *endpoint;
endpoint = g_object_new (G_USB_TYPE_ENDPOINT, NULL);
/* copy the data */
memcpy (&endpoint->endpoint_descriptor,
endpoint_descriptor,
sizeof (struct libusb_endpoint_descriptor));
endpoint->extra = g_bytes_new (endpoint_descriptor->extra, endpoint_descriptor->extra_length);
return G_USB_ENDPOINT (endpoint);
}
/**
* g_usb_endpoint_get_kind:
* @endpoint: a #GUsbEndpoint
*
* Gets the type of endpoint.
*
* Return value: The 8-bit type
*
* Since: 0.3.3
**/
guint8
g_usb_endpoint_get_kind (GUsbEndpoint *endpoint)
{
g_return_val_if_fail (G_USB_IS_ENDPOINT (endpoint), 0);
return endpoint->endpoint_descriptor.bDescriptorType;
}
/**
* g_usb_endpoint_get_maximum_packet_size:
* @endpoint: a #GUsbEndpoint
*
* Gets the maximum packet size this endpoint is capable of sending/receiving.
*
* Return value: The maximum packet size
*
* Since: 0.3.3
**/
guint16
g_usb_endpoint_get_maximum_packet_size (GUsbEndpoint *endpoint)
{
g_return_val_if_fail (G_USB_IS_ENDPOINT (endpoint), 0);
return endpoint->endpoint_descriptor.wMaxPacketSize;
}
/**
* g_usb_endpoint_get_polling_interval:
* @endpoint: a #GUsbEndpoint
*
* Gets the endpoint polling interval.
*
* Return value: The endpoint polling interval
*
* Since: 0.3.3
**/
guint8
g_usb_endpoint_get_polling_interval (GUsbEndpoint *endpoint)
{
g_return_val_if_fail (G_USB_IS_ENDPOINT (endpoint), 0);
return endpoint->endpoint_descriptor.bInterval;
}
/**
* g_usb_endpoint_get_refresh:
* @endpoint: a #GUsbEndpoint
*
* Gets the rate at which synchronization feedback is provided, for audio device only.
*
* Return value: The endpoint refresh
*
* Since: 0.3.3
**/
guint8
g_usb_endpoint_get_refresh (GUsbEndpoint *endpoint)
{
g_return_val_if_fail (G_USB_IS_ENDPOINT (endpoint), 0);
return endpoint->endpoint_descriptor.bRefresh;
}
/**
* g_usb_endpoint_get_synch_address:
* @endpoint: a #GUsbEndpoint
*
* Gets the address if the synch endpoint, for audio device only.
*
* Return value: The synch endpoint address
*
* Since: 0.3.3
**/
guint8
g_usb_endpoint_get_synch_address (GUsbEndpoint *endpoint)
{
g_return_val_if_fail (G_USB_IS_ENDPOINT (endpoint), 0);
return endpoint->endpoint_descriptor.bSynchAddress;
}
/**
* g_usb_endpoint_get_address:
* @endpoint: a #GUsbEndpoint
*
* Gets the address of the endpoint.
*
* Return value: The 4-bit endpoint address
*
* Since: 0.3.3
**/
guint8
g_usb_endpoint_get_address (GUsbEndpoint *endpoint)
{
g_return_val_if_fail (G_USB_IS_ENDPOINT (endpoint), 0);
return endpoint->endpoint_descriptor.bEndpointAddress;
}
/**
* g_usb_endpoint_get_number:
* @endpoint: a #GUsbEndpoint
*
* Gets the number part of endpoint address.
*
* Return value: The lower 4-bit of endpoint address
*
* Since: 0.3.3
**/
guint8
g_usb_endpoint_get_number (GUsbEndpoint *endpoint)
{
g_return_val_if_fail (G_USB_IS_ENDPOINT (endpoint), 0);
return (endpoint->endpoint_descriptor.bEndpointAddress) & 0xf;
}
/**
* g_usb_endpoint_get_direction:
* @endpoint: a #GUsbEndpoint
*
* Gets the direction of the endpoint.
*
* Return value: The endpoint direction
*
* Since: 0.3.3
**/
GUsbDeviceDirection
g_usb_endpoint_get_direction (GUsbEndpoint *endpoint)
{
g_return_val_if_fail (G_USB_IS_ENDPOINT (endpoint), 0);
return (endpoint->endpoint_descriptor.bEndpointAddress & 0x80) ?
G_USB_DEVICE_DIRECTION_DEVICE_TO_HOST :
G_USB_DEVICE_DIRECTION_HOST_TO_DEVICE;
}
/**
* g_usb_endpoint_get_extra:
* @endpoint: a #GUsbEndpoint
*
* Gets any extra data from the endpoint.
*
* Return value: (transfer none): a #GBytes, or %NULL for failure
*
* Since: 0.3.3
**/
GBytes *
g_usb_endpoint_get_extra (GUsbEndpoint *endpoint)
{
g_return_val_if_fail (G_USB_IS_ENDPOINT (endpoint), NULL);
return endpoint->extra;
}
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