2 * Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 FILE_LICENCE ( GPL2_OR_LATER );
29 #include <ipxe/umalloc.h>
30 #include <ipxe/pixbuf.h>
35 * @v refcnt Reference count
37 static void free_pixbuf ( struct refcnt *refcnt ) {
38 struct pixel_buffer *pixbuf =
39 container_of ( refcnt, struct pixel_buffer, refcnt );
41 ufree ( pixbuf->data );
46 * Allocate pixel buffer
50 * @ret pixbuf Pixel buffer, or NULL on failure
52 struct pixel_buffer * alloc_pixbuf ( unsigned int width, unsigned int height ) {
53 struct pixel_buffer *pixbuf;
55 /* Allocate and initialise structure */
56 pixbuf = zalloc ( sizeof ( *pixbuf ) );
58 goto err_alloc_pixbuf;
59 ref_init ( &pixbuf->refcnt, free_pixbuf );
60 pixbuf->width = width;
61 pixbuf->height = height;
62 pixbuf->len = ( width * height * sizeof ( uint32_t ) );
64 /* Allocate pixel data buffer */
65 pixbuf->data = umalloc ( pixbuf->len );
72 pixbuf_put ( pixbuf );