56 lines
1.0 KiB
C
56 lines
1.0 KiB
C
#ifndef _IPXE_PIXBUF_H
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#define _IPXE_PIXBUF_H
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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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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stddef.h>
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#include <ipxe/refcnt.h>
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#include <ipxe/uaccess.h>
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/** A pixel buffer */
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struct pixel_buffer {
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/** Reference count */
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struct refcnt refcnt;
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/** Width */
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unsigned int width;
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/** Height */
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unsigned int height;
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/** 32-bit (8:8:8:8) xRGB pixel data, in host-endian order */
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userptr_t data;
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/** Total length */
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size_t len;
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};
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/**
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* Get reference to pixel buffer
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*
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* @v pixbuf Pixel buffer
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* @ret pixbuf Pixel buffer
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*/
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static inline __attribute__ (( always_inline )) struct pixel_buffer *
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pixbuf_get ( struct pixel_buffer *pixbuf ) {
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ref_get ( &pixbuf->refcnt );
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return pixbuf;
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}
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/**
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* Drop reference to pixel buffer
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*
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* @v pixbuf Pixel buffer
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*/
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static inline __attribute__ (( always_inline )) void
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pixbuf_put ( struct pixel_buffer *pixbuf ) {
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ref_put ( &pixbuf->refcnt );
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}
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extern struct pixel_buffer * alloc_pixbuf ( unsigned int width,
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unsigned int height );
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#endif /* _IPXE_PIXBUF_H */
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