usr.sbin/bhyve/bhyvegc.c

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