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@@ -0,0 +1,75 @@
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+/*
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+ * Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>.
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License as
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+ * published by the Free Software Foundation; either version 2 of the
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+ * License, or any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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+ * 02110-1301, USA.
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+ */
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+
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+FILE_LICENCE ( GPL2_OR_LATER );
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+
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+/** @file
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+ *
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+ * Pixel buffer
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+ *
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+ */
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+
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+#include <stdlib.h>
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+#include <ipxe/umalloc.h>
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+#include <ipxe/pixbuf.h>
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+
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+/**
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+ * Free pixel buffer
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+ *
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+ * @v refcnt Reference count
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+ */
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+static void free_pixbuf ( struct refcnt *refcnt ) {
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+ struct pixel_buffer *pixbuf =
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+ container_of ( refcnt, struct pixel_buffer, refcnt );
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+
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+ ufree ( pixbuf->data );
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+ free ( pixbuf );
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+}
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+
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+/**
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+ * Allocate pixel buffer
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+ *
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+ * @v width Width
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+ * @h height Height
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+ * @ret pixbuf Pixel buffer, or NULL on failure
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+ */
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+struct pixel_buffer * alloc_pixbuf ( unsigned int width, unsigned int height ) {
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+ struct pixel_buffer *pixbuf;
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+
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+ /* Allocate and initialise structure */
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+ pixbuf = zalloc ( sizeof ( *pixbuf ) );
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+ if ( ! pixbuf )
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+ goto err_alloc_pixbuf;
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+ ref_init ( &pixbuf->refcnt, free_pixbuf );
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+ pixbuf->width = width;
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+ pixbuf->height = height;
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+ pixbuf->len = ( width * height * sizeof ( uint32_t ) );
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+
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+ /* Allocate pixel data buffer */
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+ pixbuf->data = umalloc ( pixbuf->len );
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+ if ( ! pixbuf->data )
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+ goto err_alloc_data;
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+
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+ return pixbuf;
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+
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+ err_alloc_data:
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+ pixbuf_put ( pixbuf );
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+ err_alloc_pixbuf:
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+ return NULL;
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+}
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