1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2015 Tycho Nightingale <tycho.nightingale@pluribusnetworks.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: stable/11/usr.sbin/bhyve/bhyvegc.c 336191 2018-07-11 07:22:05Z araujo $");
31
32#include <sys/types.h>
33
34#include <stdlib.h>
35#include <stdio.h>
36#include <string.h>
37
38#include "bhyvegc.h"
39
40struct bhyvegc {
41	struct bhyvegc_image	*gc_image;
42	int raw;
43};
44
45struct bhyvegc *
46bhyvegc_init(int width, int height, void *fbaddr)
47{
48	struct bhyvegc *gc;
49	struct bhyvegc_image *gc_image;
50
51	gc = calloc(1, sizeof (struct bhyvegc));
52
53	gc_image = calloc(1, sizeof(struct bhyvegc_image));
54	gc_image->width = width;
55	gc_image->height = height;
56	if (fbaddr) {
57		gc_image->data = fbaddr;
58		gc->raw = 1;
59	} else {
60		gc_image->data = calloc(width * height, sizeof (uint32_t));
61		gc->raw = 0;
62	}
63
64	gc->gc_image = gc_image;
65
66	return (gc);
67}
68
69void
70bhyvegc_set_fbaddr(struct bhyvegc *gc, void *fbaddr)
71{
72	gc->raw = 1;
73	if (gc->gc_image->data && gc->gc_image->data != fbaddr)
74		free(gc->gc_image->data);
75	gc->gc_image->data = fbaddr;
76}
77
78void
79bhyvegc_resize(struct bhyvegc *gc, int width, int height)
80{
81	struct bhyvegc_image *gc_image;
82
83	gc_image = gc->gc_image;
84
85	gc_image->width = width;
86	gc_image->height = height;
87	if (!gc->raw) {
88		gc_image->data = reallocarray(gc_image->data, width * height,
89		    sizeof (uint32_t));
90		if (gc_image->data != NULL)
91			memset(gc_image->data, 0, width * height *
92			    sizeof (uint32_t));
93	}
94}
95
96struct bhyvegc_image *
97bhyvegc_get_image(struct bhyvegc *gc)
98{
99	if (gc == NULL)
100		return (NULL);
101
102	return (gc->gc_image);
103}
104