FB Graphics
FBGraphics (FBG) : Simple C 16, 24, 32 bpp generic graphics library with parallelism support and custom backend.
custom_backend
fbdev
fbg_fbdev.h
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/*
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Copyright (c) 2019, 2020 Julien Verneuil
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the organization nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL Julien Verneuil BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef FB_GRAPHICS_FBDEV_H
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#define FB_GRAPHICS_FBDEV_H
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#include <linux/fb.h>
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#include "
fbgraphics.h
"
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struct
_fbg_fbdev_context
{
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int
fd
;
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unsigned
char
*
buffer
;
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struct
fb_var_screeninfo
vinfo
;
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struct
fb_fix_screeninfo
finfo
;
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int
page_flipping
;
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};
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extern
struct
_fbg
*
fbg_fbdevSetup
(
char
*fb_device,
int
page_flipping
);
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#define fbg_fbdevInit() fbg_fbdevSetup(NULL, 0)
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#endif
fbg_fbdevSetup
struct _fbg * fbg_fbdevSetup(char *fb_device, int page_flipping)
initialize a FB Graphics context (framebuffer)
_fbg_fbdev_context::page_flipping
int page_flipping
Flag indicating that page flipping is enabled.
Definition:
fbg_fbdev.h:48
_fbg_fbdev_context
fbdev wrapper data structure
Definition:
fbg_fbdev.h:35
fbgraphics.h
_fbg_fbdev_context::buffer
unsigned char * buffer
Memory-mapped framebuffer.
Definition:
fbg_fbdev.h:40
_fbg_fbdev_context::fd
int fd
Framebuffer device file descriptor.
Definition:
fbg_fbdev.h:37
_fbg_fbdev_context::vinfo
struct fb_var_screeninfo vinfo
Framebuffer device var. informations.
Definition:
fbg_fbdev.h:43
_fbg_fbdev_context::finfo
struct fb_fix_screeninfo finfo
Framebuffer device fix. informations.
Definition:
fbg_fbdev.h:45
_fbg
FB Graphics context data structure.
Definition:
fbgraphics.h:123
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