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 #include "bhyvegc.h" 39 40 struct bhyvegc { 41 struct bhyvegc_image *gc_image; 42 int raw; 43 }; 44 45 struct bhyvegc * 46 bhyvegc_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 69 void 70 bhyvegc_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 78 void 79 bhyvegc_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 96 struct bhyvegc_image * 97 bhyvegc_get_image(struct bhyvegc *gc) 98 { 99 if (gc == NULL) 100 return (NULL); 101 102 return (gc->gc_image); 103 } 104