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FORK: Simple Directmedia Layer
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SDL_udev.h (4440B)

      1 /*
      2   Simple DirectMedia Layer
      3   Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
      4 
      5   This software is provided 'as-is', without any express or implied
      6   warranty.  In no event will the authors be held liable for any damages
      7   arising from the use of this software.
      8 
      9   Permission is granted to anyone to use this software for any purpose,
     10   including commercial applications, and to alter it and redistribute it
     11   freely, subject to the following restrictions:
     12 
     13   1. The origin of this software must not be misrepresented; you must not
     14      claim that you wrote the original software. If you use this software
     15      in a product, an acknowledgment in the product documentation would be
     16      appreciated but is not required.
     17   2. Altered source versions must be plainly marked as such, and must not be
     18      misrepresented as being the original software.
     19   3. This notice may not be removed or altered from any source distribution.
     20 */
     21 
     22 #include "../../SDL_internal.h"
     23 
     24 #ifndef SDL_udev_h_
     25 #define SDL_udev_h_
     26 
     27 #if HAVE_LIBUDEV_H
     28 
     29 #ifndef SDL_USE_LIBUDEV
     30 #define SDL_USE_LIBUDEV 1
     31 #endif
     32 
     33 #include "SDL_loadso.h"
     34 #include "SDL_events.h"
     35 #include <libudev.h>
     36 #include <sys/time.h>
     37 #include <sys/types.h>
     38 
     39 /**
     40  *  \brief Device type
     41  */
     42 
     43 typedef enum
     44 {
     45     SDL_UDEV_DEVICEADDED = 1,
     46     SDL_UDEV_DEVICEREMOVED
     47 } SDL_UDEV_deviceevent;
     48 
     49 typedef void (*SDL_UDEV_Callback)(SDL_UDEV_deviceevent udev_type, int udev_class, const char *devpath);
     50 
     51 typedef struct SDL_UDEV_CallbackList {
     52     SDL_UDEV_Callback callback;
     53     struct SDL_UDEV_CallbackList *next;
     54 } SDL_UDEV_CallbackList;
     55 
     56 typedef struct SDL_UDEV_Symbols {
     57     const char *(*udev_device_get_action)(struct udev_device *);
     58     const char *(*udev_device_get_devnode)(struct udev_device *);
     59     const char *(*udev_device_get_subsystem)(struct udev_device *);
     60     struct udev_device *(*udev_device_get_parent_with_subsystem_devtype)(struct udev_device *udev_device, const char *subsystem, const char *devtype);
     61     const char *(*udev_device_get_property_value)(struct udev_device *, const char *);
     62     const char *(*udev_device_get_sysattr_value)(struct udev_device *udev_device, const char *sysattr);
     63     struct udev_device *(*udev_device_new_from_syspath)(struct udev *, const char *);
     64     void (*udev_device_unref)(struct udev_device *);
     65     int (*udev_enumerate_add_match_property)(struct udev_enumerate *, const char *, const char *);
     66     int (*udev_enumerate_add_match_subsystem)(struct udev_enumerate *, const char *);
     67     struct udev_list_entry *(*udev_enumerate_get_list_entry)(struct udev_enumerate *);
     68     struct udev_enumerate *(*udev_enumerate_new)(struct udev *);
     69     int (*udev_enumerate_scan_devices)(struct udev_enumerate *);
     70     void (*udev_enumerate_unref)(struct udev_enumerate *);
     71     const char *(*udev_list_entry_get_name)(struct udev_list_entry *);
     72     struct udev_list_entry *(*udev_list_entry_get_next)(struct udev_list_entry *);
     73     int (*udev_monitor_enable_receiving)(struct udev_monitor *);
     74     int (*udev_monitor_filter_add_match_subsystem_devtype)(struct udev_monitor *, const char *, const char *);
     75     int (*udev_monitor_get_fd)(struct udev_monitor *);
     76     struct udev_monitor *(*udev_monitor_new_from_netlink)(struct udev *, const char *);
     77     struct udev_device *(*udev_monitor_receive_device)(struct udev_monitor *);
     78     void (*udev_monitor_unref)(struct udev_monitor *);
     79     struct udev *(*udev_new)(void);
     80     void (*udev_unref)(struct udev *);
     81     struct udev_device * (*udev_device_new_from_devnum)(struct udev *udev, char type, dev_t devnum);
     82     dev_t (*udev_device_get_devnum) (struct udev_device *udev_device);
     83 } SDL_UDEV_Symbols;
     84 
     85 typedef struct SDL_UDEV_PrivateData
     86 {
     87     const char *udev_library;
     88     void *udev_handle;
     89     struct udev *udev;
     90     struct udev_monitor *udev_mon;
     91     int ref_count;
     92     SDL_UDEV_CallbackList *first, *last;
     93     
     94     /* Function pointers */
     95     SDL_UDEV_Symbols syms;
     96 } SDL_UDEV_PrivateData;
     97 
     98 extern int SDL_UDEV_Init(void);
     99 extern void SDL_UDEV_Quit(void);
    100 extern void SDL_UDEV_UnloadLibrary(void);
    101 extern int SDL_UDEV_LoadLibrary(void);
    102 extern void SDL_UDEV_Poll(void);
    103 extern void SDL_UDEV_Scan(void);
    104 extern int SDL_UDEV_AddCallback(SDL_UDEV_Callback cb);
    105 extern void SDL_UDEV_DelCallback(SDL_UDEV_Callback cb);
    106 extern const SDL_UDEV_Symbols *SDL_UDEV_GetUdevSyms(void);
    107 extern void SDL_UDEV_ReleaseUdevSyms(void);
    108 
    109 
    110 #endif /* HAVE_LIBUDEV_H */
    111 
    112 #endif /* SDL_udev_h_ */
    113 
    114 /* vi: set ts=4 sw=4 expandtab: */