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("$FreeBSD$"); 31 32 #include <sys/types.h> 33 34 #include <stdlib.h> 35 #include <stdio.h> 36 #include <string.h> 37 38 #ifndef __FreeBSD__ 39 #include <pthread.h> 40 #endif 41 42 #include "bhyvegc.h" 43 44 struct bhyvegc { 45 struct bhyvegc_image *gc_image; 46 int raw; 47 }; 48 49 struct bhyvegc * 50 bhyvegc_init(int width, int height, void *fbaddr) 51 { 52 struct bhyvegc *gc; 53 struct bhyvegc_image *gc_image; 54 55 gc = calloc(1, sizeof (struct bhyvegc)); 56 57 gc_image = calloc(1, sizeof(struct bhyvegc_image)); 58 gc_image->width = width; 59 gc_image->height = height; 60 if (fbaddr) { 61 gc_image->data = fbaddr; 62 gc->raw = 1; 63 } else { 64 gc_image->data = calloc(width * height, sizeof (uint32_t)); 65 gc->raw = 0; 66 } 67 68 gc->gc_image = gc_image; 69 70 #ifndef __FreeBSD__ 71 pthread_mutex_init(&gc_image->mtx, NULL); 72 #endif 73 74 return (gc); 75 } 76 77 void 78 bhyvegc_set_fbaddr(struct bhyvegc *gc, void *fbaddr) 79 { 80 #ifndef __FreeBSD__ 81 pthread_mutex_lock(&gc->gc_image->mtx); 82 #endif 83 gc->raw = 1; 84 if (gc->gc_image->data && gc->gc_image->data != fbaddr) 85 free(gc->gc_image->data); 86 gc->gc_image->data = fbaddr; 87 #ifndef __FreeBSD__ 88 pthread_mutex_unlock(&gc->gc_image->mtx); 89 #endif 90 } 91 92 void 93 bhyvegc_resize(struct bhyvegc *gc, int width, int height) 94 { 95 struct bhyvegc_image *gc_image; 96 97 #ifndef __FreeBSD__ 98 pthread_mutex_lock(&gc->gc_image->mtx); 99 #endif 100 gc_image = gc->gc_image; 101 102 gc_image->width = width; 103 gc_image->height = height; 104 if (!gc->raw) { 105 gc_image->data = reallocarray(gc_image->data, width * height, 106 sizeof (uint32_t)); 107 if (gc_image->data != NULL) 108 memset(gc_image->data, 0, width * height * 109 sizeof (uint32_t)); 110 } 111 #ifndef __FreeBSD__ 112 pthread_mutex_unlock(&gc->gc_image->mtx); 113 #endif 114 } 115 116 struct bhyvegc_image * 117 bhyvegc_get_image(struct bhyvegc *gc) 118 { 119 if (gc == NULL) 120 return (NULL); 121 122 return (gc->gc_image); 123 } 124