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
30 #include <sys/types.h>
31
32 #include <stdlib.h>
33 #include <stdio.h>
34 #include <string.h>
35
36 #ifndef __FreeBSD__
37 #include <pthread.h>
38 #endif
39
40 #include "bhyvegc.h"
41
42 struct bhyvegc {
43 struct bhyvegc_image *gc_image;
44 int raw;
45 };
46
47 struct bhyvegc *
bhyvegc_init(int width,int height,void * fbaddr)48 bhyvegc_init(int width, int height, void *fbaddr)
49 {
50 struct bhyvegc *gc;
51 struct bhyvegc_image *gc_image;
52
53 gc = calloc(1, sizeof (struct bhyvegc));
54
55 gc_image = calloc(1, sizeof(struct bhyvegc_image));
56 gc_image->width = width;
57 gc_image->height = height;
58 if (fbaddr) {
59 gc_image->data = fbaddr;
60 gc->raw = 1;
61 } else {
62 gc_image->data = calloc(width * height, sizeof (uint32_t));
63 gc->raw = 0;
64 }
65
66 gc->gc_image = gc_image;
67
68 #ifndef __FreeBSD__
69 pthread_mutex_init(&gc_image->mtx, NULL);
70 #endif
71
72 return (gc);
73 }
74
75 void
bhyvegc_set_fbaddr(struct bhyvegc * gc,void * fbaddr)76 bhyvegc_set_fbaddr(struct bhyvegc *gc, void *fbaddr)
77 {
78 #ifndef __FreeBSD__
79 pthread_mutex_lock(&gc->gc_image->mtx);
80 #endif
81 gc->raw = 1;
82 if (gc->gc_image->data && gc->gc_image->data != fbaddr)
83 free(gc->gc_image->data);
84 gc->gc_image->data = fbaddr;
85 #ifndef __FreeBSD__
86 pthread_mutex_unlock(&gc->gc_image->mtx);
87 #endif
88 }
89
90 void
bhyvegc_resize(struct bhyvegc * gc,int width,int height)91 bhyvegc_resize(struct bhyvegc *gc, int width, int height)
92 {
93 struct bhyvegc_image *gc_image;
94
95 #ifndef __FreeBSD__
96 pthread_mutex_lock(&gc->gc_image->mtx);
97 #endif
98 gc_image = gc->gc_image;
99
100 gc_image->width = width;
101 gc_image->height = height;
102 if (!gc->raw) {
103 gc_image->data = reallocarray(gc_image->data, width * height,
104 sizeof (uint32_t));
105 if (gc_image->data != NULL)
106 memset(gc_image->data, 0, width * height *
107 sizeof (uint32_t));
108 }
109 #ifndef __FreeBSD__
110 pthread_mutex_unlock(&gc->gc_image->mtx);
111 #endif
112 }
113
114 struct bhyvegc_image *
bhyvegc_get_image(struct bhyvegc * gc)115 bhyvegc_get_image(struct bhyvegc *gc)
116 {
117 if (gc == NULL)
118 return (NULL);
119
120 return (gc->gc_image);
121 }
122