2d/kickstart/xcb_syms.c

   1 #ifndef XCB_SYMS_C
   2 #define XCB_SYMS_C
   3 /*
   4  * this is public domain without any warranties of any kind
   5  * Sylvain BERTRAND
   6  */
   7 /* XXX: KEEP AN EYE ON ABBREVIATIONS */
   8 #include <dlfcn.h>
   9 #include <stdlib.h>
  10
  11 #include <xcb.h>
  12
  13 #include "app_core_types.h"
  14 #include "log.h"
  15
  16 static void *xcb_client_lib;
  17
  18 static xcb_connection_t *(*dl_xcb_connect)(u8 *displayname, int *scr);
  19 static u32 (*dl_xcb_generate_id)(xcb_connection_t *c);
  20 static int (*dl_xcb_connection_has_error)(xcb_connection_t *c);
  21 static xcb_setup_t *(*dl_xcb_get_setup)(xcb_connection_t *c);
  22 static int (*dl_xcb_setup_roots_length)(xcb_setup_t *s);
  23 static xcb_screen_iterator_t (*dl_xcb_setup_roots_iterator)(xcb_setup_t *s);
  24 static void (*dl_xcb_screen_next)(xcb_screen_iterator_t *iter);
  25 static void (*dl_xcb_create_window)(xcb_connection_t *c, u8 depth,
  26         xcb_window_t wid, xcb_window_t parent, s16 x, s16 y, u16 width,
  27         u16 heigth, u16 border_width, u16 class, xcb_visualid_t visual,
  28         u32 value_mask, u32 *value_list);
  29 static xcb_void_cookie_t (*dl_xcb_map_window)(xcb_connection_t *c,
  30                                                         xcb_window_t win);
  31 static xcb_void_cookie_t (*dl_xcb_map_window_checked)(xcb_connection_t *c,
  32                                                         xcb_window_t win);
  33 static xcb_generic_error_t *(*dl_xcb_request_check)(xcb_connection_t *c,
  34                                                 xcb_void_cookie_t cookie);
  35 static int (*dl_xcb_flush)(xcb_connection_t *c);
  36 static xcb_generic_event_t *(*dl_xcb_wait_for_event)(xcb_connection_t *c);
  37 static xcb_generic_event_t *(*dl_xcb_poll_for_event)(xcb_connection_t *c);
  38 static void (*dl_xcb_disconnect)(xcb_connection_t *c);
  39 static xcb_void_cookie_t (*dl_xcb_change_property)(xcb_connection_t *c, u8 mode,
  40         xcb_window_t window, xcb_atom_t property, xcb_atom_t type, u8 format,
  41                                                 u32 data_len, void *data);
  42
  43 static void app_xcb_client_lib_load(void)
  44 {
  45         xcb_client_lib = dlopen("libxcb.so.1", RTLD_LAZY);
  46         if (xcb_client_lib == 0) {
  47                 LOG("0:MAIN:FATAL:%s:unable to load the xcb dynamic shared library\n", dlerror());
  48                 exit(1);
  49         }
  50 }
  51
  52 static void app_xcb_client_lib_close(void)
  53 {
  54         int r;
  55
  56         r = dlclose(xcb_client_lib);
  57         if (r != 0) {
  58                 LOG("0:MAIN:FATAL:%d:%s:unable to close the xcb dynamic shared library\n", r, dlerror());
  59                 exit(1);
  60         }
  61         xcb_client_lib = 0;
  62 }
  63 /*----------------------------------------------------------------------------*/
  64 #define XCB_DLSYM(x)                                                            \
  65         dl_##x = dlsym(xcb_client_lib, #x);                                     \
  66         if (dl_##x == 0) {                                                      \
  67                 LOG("0:MAIN:FATAL:%s:unable to find " #x "\n", dlerror());      \
  68                 exit(1);                                                        \
  69         }
  70 static void app_xcb_syms(void)
  71 {
  72         XCB_DLSYM(xcb_connect);
  73         XCB_DLSYM(xcb_generate_id);
  74         XCB_DLSYM(xcb_connection_has_error);
  75         XCB_DLSYM(xcb_get_setup);
  76         XCB_DLSYM(xcb_setup_roots_length);
  77         XCB_DLSYM(xcb_setup_roots_iterator);
  78         XCB_DLSYM(xcb_screen_next);
  79         XCB_DLSYM(xcb_create_window);
  80         XCB_DLSYM(xcb_map_window);
  81         XCB_DLSYM(xcb_map_window_checked);
  82         XCB_DLSYM(xcb_request_check);
  83         XCB_DLSYM(xcb_flush);
  84         XCB_DLSYM(xcb_wait_for_event);
  85         XCB_DLSYM(xcb_poll_for_event);
  86         XCB_DLSYM(xcb_change_property);
  87         XCB_DLSYM(xcb_disconnect);
  88 }
  89 #undef XCB_DLSYM
  90 #endif /* X_SYMS_C */