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 37 struct bhyvegc { 38 struct bhyvegc_image *gc_image; 39 int raw; 40 }; 41 42 struct bhyvegc * 43 bhyvegc_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 66 void 67 bhyvegc_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 75 void 76 bhyvegc_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 93 struct bhyvegc_image * 94 bhyvegc_get_image(struct bhyvegc *gc) 95 { 96 if (gc == NULL) 97 return (NULL); 98 99 return (gc->gc_image); 100 } 101