usr.sbin/bhyve/bhyvegc.c

   1 #include <sys/cdefs.h>
   2 __FBSDID("$FreeBSD$");
   3
   4 #include <sys/types.h>
   5
   6 #include <stdlib.h>
   7 #include <stdio.h>
   8 #include <string.h>
   9
  10 #include "bhyvegc.h"
  11
  12 struct bhyvegc {
  13         struct bhyvegc_image    *gc_image;
  14         int raw;
  15 };
  16
  17 struct bhyvegc *
  18 bhyvegc_init(int width, int height, void *fbaddr)
  19 {
  20         struct bhyvegc *gc;
  21         struct bhyvegc_image *gc_image;
  22
  23         gc = calloc(1, sizeof (struct bhyvegc));
  24
  25         gc_image = calloc(1, sizeof(struct bhyvegc_image));
  26         gc_image->width = width;
  27         gc_image->height = height;
  28         if (fbaddr) {
  29                 gc_image->data = fbaddr;
  30                 gc->raw = 1;
  31         } else {
  32                 gc_image->data = calloc(width * height, sizeof (uint32_t));
  33                 gc->raw = 0;
  34         }
  35
  36         gc->gc_image = gc_image;
  37
  38         return (gc);
  39 }
  40
  41 void
  42 bhyvegc_set_fbaddr(struct bhyvegc *gc, void *fbaddr)
  43 {
  44         gc->raw = 1;
  45         if (gc->gc_image->data && gc->gc_image->data != fbaddr)
  46                 free(gc->gc_image->data);
  47         gc->gc_image->data = fbaddr;
  48 }
  49
  50 void
  51 bhyvegc_resize(struct bhyvegc *gc, int width, int height)
  52 {
  53         struct bhyvegc_image *gc_image;
  54
  55         gc_image = gc->gc_image;
  56
  57         gc_image->width = width;
  58         gc_image->height = height;
  59         if (!gc->raw) {
  60                 gc_image->data = reallocarray(gc_image->data, width * height,
  61                     sizeof (uint32_t));
  62                 if (gc_image->data != NULL)
  63                         memset(gc_image->data, 0, width * height *
  64                             sizeof (uint32_t));
  65         }
  66 }
  67
  68 struct bhyvegc_image *
  69 bhyvegc_get_image(struct bhyvegc *gc)
  70 {
  71         if (gc == NULL)
  72                 return (NULL);
  73
  74         return (gc->gc_image);
  75 }