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/cdefs.h>
30
31 #include <sys/types.h>
32
33 #include <stdlib.h>
34 #include <stdio.h>
35 #include <string.h>
36
37 #ifndef __FreeBSD__
38 #include <pthread.h>
39 #endif
40
41 #include "bhyvegc.h"
42
43 struct bhyvegc {
44 struct bhyvegc_image *gc_image;
45 int raw;
46 };
47
48 struct bhyvegc *
bhyvegc_init(int width,int height,void * fbaddr)49 bhyvegc_init(int width, int height, void *fbaddr)
50 {
51 struct bhyvegc *gc;
52 struct bhyvegc_image *gc_image;
53
54 gc = calloc(1, sizeof (struct bhyvegc));
55
56 gc_image = calloc(1, sizeof(struct bhyvegc_image));
57 gc_image->width = width;
58 gc_image->height = height;
59 if (fbaddr) {
60 gc_image->data = fbaddr;
61 gc->raw = 1;
62 } else {
63 gc_image->data = calloc(width * height, sizeof (uint32_t));
64 gc->raw = 0;
65 }
66
67 gc->gc_image = gc_image;
68
69 #ifndef __FreeBSD__
70 pthread_mutex_init(&gc_image->mtx, NULL);
71 #endif
72
73 return (gc);
74 }
75
76 void
bhyvegc_set_fbaddr(struct bhyvegc * gc,void * fbaddr)77 bhyvegc_set_fbaddr(struct bhyvegc *gc, void *fbaddr)
78 {
79 #ifndef __FreeBSD__
80 pthread_mutex_lock(&gc->gc_image->mtx);
81 #endif
82 gc->raw = 1;
83 if (gc->gc_image->data && gc->gc_image->data != fbaddr)
84 free(gc->gc_image->data);
85 gc->gc_image->data = fbaddr;
86 #ifndef __FreeBSD__
87 pthread_mutex_unlock(&gc->gc_image->mtx);
88 #endif
89 }
90
91 void
bhyvegc_resize(struct bhyvegc * gc,int width,int height)92 bhyvegc_resize(struct bhyvegc *gc, int width, int height)
93 {
94 struct bhyvegc_image *gc_image;
95
96 #ifndef __FreeBSD__
97 pthread_mutex_lock(&gc->gc_image->mtx);
98 #endif
99 gc_image = gc->gc_image;
100
101 gc_image->width = width;
102 gc_image->height = height;
103 if (!gc->raw) {
104 gc_image->data = reallocarray(gc_image->data, width * height,
105 sizeof (uint32_t));
106 if (gc_image->data != NULL)
107 memset(gc_image->data, 0, width * height *
108 sizeof (uint32_t));
109 }
110 #ifndef __FreeBSD__
111 pthread_mutex_unlock(&gc->gc_image->mtx);
112 #endif
113 }
114
115 struct bhyvegc_image *
bhyvegc_get_image(struct bhyvegc * gc)116 bhyvegc_get_image(struct bhyvegc *gc)
117 {
118 if (gc == NULL)
119 return (NULL);
120
121 return (gc->gc_image);
122 }
123