1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
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/types.h>
30
31#include <stdlib.h>
32#include <stdio.h>
33#include <string.h>
34
35#include "bhyvegc.h"
36
37struct bhyvegc {
38	struct bhyvegc_image	*gc_image;
39	int raw;
40};
41
42struct bhyvegc *
43bhyvegc_init(int width, int height, void *fbaddr)
44{
45	struct bhyvegc *gc;
46	struct bhyvegc_image *gc_image;
47
48	gc = calloc(1, sizeof (struct bhyvegc));
49
50	gc_image = calloc(1, sizeof(struct bhyvegc_image));
51	gc_image->width = width;
52	gc_image->height = height;
53	if (fbaddr) {
54		gc_image->data = fbaddr;
55		gc->raw = 1;
56	} else {
57		gc_image->data = calloc(width * height, sizeof (uint32_t));
58		gc->raw = 0;
59	}
60
61	gc->gc_image = gc_image;
62
63	return (gc);
64}
65
66void
67bhyvegc_set_fbaddr(struct bhyvegc *gc, void *fbaddr)
68{
69	gc->raw = 1;
70	if (gc->gc_image->data && gc->gc_image->data != fbaddr)
71		free(gc->gc_image->data);
72	gc->gc_image->data = fbaddr;
73}
74
75void
76bhyvegc_resize(struct bhyvegc *gc, int width, int height)
77{
78	struct bhyvegc_image *gc_image;
79
80	gc_image = gc->gc_image;
81
82	gc_image->width = width;
83	gc_image->height = height;
84	if (!gc->raw) {
85		gc_image->data = reallocarray(gc_image->data, width * height,
86		    sizeof (uint32_t));
87		if (gc_image->data != NULL)
88			memset(gc_image->data, 0, width * height *
89			    sizeof (uint32_t));
90	}
91}
92
93struct bhyvegc_image *
94bhyvegc_get_image(struct bhyvegc *gc)
95{
96	if (gc == NULL)
97		return (NULL);
98
99	return (gc->gc_image);
100}
101