[Spice-devel] [spice-gtk v4 10/13] cd-charing: added interface definition for USB backend device

[Yuri Benditovich]

This interface isolates LIBUSB and USBREDIRHOST interfaces
from all other modules of spice-gtk. It keeps all the
functionality of these interfaces and adds ability to
create and manage emulated CD devices

Signed-off-by: Yuri Benditovich <yuri.benditovich at daynix.com>
---
 src/usb-backend.h | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 src/usb-backend.h

diff --git a/src/usb-backend.h b/src/usb-backend.h
new file mode 100644
index 0000000..47ec2b3
--- /dev/null
+++ b/src/usb-backend.h
@@ -0,0 +1,112 @@
+/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+    Copyright (C) 2018 Red Hat, Inc.
+
+    Red Hat Authors:
+    Yuri Benditovich<ybendito at redhat.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __SPICE_USB_BACKEND_H__
+#define __SPICE_USB_BACKEND_H__
+
+#include <usbredirfilter.h>
+#include "usb-device-manager.h"
+
+G_BEGIN_DECLS
+
+typedef struct _SpiceUsbBackend SpiceUsbBackend;
+typedef struct _SpiceUsbBackendDevice SpiceUsbBackendDevice;
+typedef struct _SpiceUsbBackendChannel SpiceUsbBackendChannel;
+
+typedef struct _UsbDeviceInformation
+{
+    uint16_t bus;
+    uint16_t address;
+    uint16_t vid;
+    uint16_t pid;
+    uint8_t class;
+    uint8_t subclass;
+    uint8_t protocol;
+    uint8_t isochronous;
+    uint8_t max_luns;
+} UsbDeviceInformation;
+
+typedef struct _SpiceUsbBackendChannelInitData
+{
+    void *user_data;
+    void (*log)(void *user_data, const char *msg, gboolean error);
+    int (*write_callback)(void *user_data, uint8_t *data, int count);
+    int (*is_channel_ready)(void *user_data);
+    uint64_t (*get_queue_size)(void *user_data);
+    gboolean debug;
+} SpiceUsbBackendChannelInitData;
+
+typedef void(*usb_hot_plug_callback)(
+    void *user_data, SpiceUsbBackendDevice *dev, gboolean added);
+
+typedef void(*backend_device_change_callback)(
+    void *user_data, SpiceUsbBackendDevice *dev);
+
+enum {
+    USB_REDIR_ERROR_IO = -1,
+    USB_REDIR_ERROR_READ_PARSE = -2,
+    USB_REDIR_ERROR_DEV_REJECTED = -3,
+    USB_REDIR_ERROR_DEV_LOST = -4,
+};
+
+SpiceUsbBackend *spice_usb_backend_initialize(void);
+gboolean spice_usb_backend_handle_events(SpiceUsbBackend *);
+gboolean spice_usb_backend_handle_hotplug(SpiceUsbBackend *, void *user_data, usb_hot_plug_callback proc);
+void spice_usb_backend_set_device_change_callback(SpiceUsbBackend *, void *user_data, backend_device_change_callback proc);
+void spice_usb_backend_finalize(SpiceUsbBackend *context);
+// returns NULL-terminated array of SpiceUsbBackendDevice *
+SpiceUsbBackendDevice **spice_usb_backend_get_device_list(SpiceUsbBackend *backend);
+gboolean spice_usb_backend_device_is_hub(SpiceUsbBackendDevice *dev);
+gboolean spice_usb_backend_device_need_thread(SpiceUsbBackendDevice *dev);
+void spice_usb_backend_free_device_list(SpiceUsbBackendDevice **devlist);
+void spice_usb_backend_device_acquire(SpiceUsbBackendDevice *dev);
+void spice_usb_backend_device_release(SpiceUsbBackendDevice *dev);
+gboolean spice_usb_backend_devices_same(SpiceUsbBackendDevice *dev1, SpiceUsbBackendDevice *dev2);
+gconstpointer spice_usb_backend_device_get_libdev(SpiceUsbBackendDevice *dev);
+const UsbDeviceInformation*  spice_usb_backend_device_get_info(SpiceUsbBackendDevice *dev);
+gboolean  spice_usb_backend_device_get_info_by_address(guint8 bus, guint8 addr, UsbDeviceInformation *info);
+// returns 0 if the device passes the filter
+int spice_usb_backend_device_check_filter(SpiceUsbBackendDevice *dev, const struct usbredirfilter_rule *rules, int count);
+
+SpiceUsbBackendChannel *spice_usb_backend_channel_initialize(SpiceUsbBackend *context, const SpiceUsbBackendChannelInitData *init_data);
+// returns 0 for success or error code
+int spice_usb_backend_provide_read_data(SpiceUsbBackendChannel *ch, uint8_t *data, int count);
+gboolean spice_usb_backend_channel_attach(SpiceUsbBackendChannel *ch, SpiceUsbBackendDevice *dev, const char **msg);
+void spice_usb_backend_channel_up(SpiceUsbBackendChannel *ch);
+void spice_usb_backend_channel_get_guest_filter(SpiceUsbBackendChannel *ch, const struct usbredirfilter_rule  **rules, int *count);
+void spice_usb_backend_return_write_data(SpiceUsbBackendChannel *ch, void *data);
+void spice_usb_backend_channel_finalize(SpiceUsbBackendChannel *ch);
+
+gboolean spice_usb_backend_add_cd_lun(SpiceUsbBackend *be, const SpiceUsbDeviceLunInfo *info);
+gboolean spice_usb_backend_remove_cd_lun(SpiceUsbBackend *be, SpiceUsbBackendDevice *bdev, guint lun);
+uint32_t spice_usb_backend_get_cd_luns_bitmask(SpiceUsbBackendDevice *bdev);
+gboolean spice_usb_backend_get_cd_lun_info(SpiceUsbBackendDevice *bdev, guint lun, SpiceUsbDeviceLunInfo *info);
+gboolean spice_usb_backend_load_cd_lun(SpiceUsbBackend *be,
+    SpiceUsbBackendDevice *bdev, guint lun, gboolean load);
+gboolean spice_usb_backend_lock_cd_lun(SpiceUsbBackend *be,
+    SpiceUsbBackendDevice *bdev, guint lun, gboolean lock);
+gboolean spice_usb_backend_change_cd_lun(
+    SpiceUsbBackend *be, SpiceUsbBackendDevice *bdev,
+    guint lun, const SpiceUsbDeviceLunInfo *info);
+
+G_END_DECLS
+
+#endif
-- 
2.9.4