// gcc -g -Wall xv-query-adaptors.c -o xv-query-adaptors -lX11 -lXv -lxcb -lxcb-xv

#include <stdio.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xvlib.h>
#include <xcb/xcb.h>
#include <xcb/xv.h>

static void test_xlib (void)
{
  Display *d = XOpenDisplay (NULL);

  unsigned int n_adaptors, i;
  XvAdaptorInfo *adaptors;
  XvQueryAdaptors (d, DefaultRootWindow (d), &n_adaptors, &adaptors);
  printf ("Xlib:\n");
  for (i = 0; i < n_adaptors; i++)
    printf ("\"%s\"\n", adaptors[i].name);
}

static void test_xcb (void)
{
  xcb_connection_t *c = xcb_connect (NULL, NULL);
  xcb_screen_t *screen = xcb_setup_roots_iterator (xcb_get_setup (c)).data;

  xcb_xv_query_adaptors_cookie_t cookie = xcb_xv_query_adaptors (c, screen->root);
  xcb_xv_query_adaptors_reply_t *reply = xcb_xv_query_adaptors_reply (c, cookie, NULL);
  xcb_xv_adaptor_info_iterator_t iter = xcb_xv_query_adaptors_info_iterator (reply);
  printf ("XCB:\n");
  while (iter.rem > 0)
  {
    printf ("\"%.*s\"\n", xcb_xv_adaptor_info_name_length (iter.data), xcb_xv_adaptor_info_name (iter.data));
    printf ("%d\n", xcb_xv_adaptor_info_sizeof (iter.data)); // Should be 32 bit aligned
    xcb_xv_adaptor_info_next (&iter);
  }
}

int main (int argc, char **argv)
{
  test_xlib ();
  test_xcb ();

  return 0;
}