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SDL_fbvideo.h
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#ifndef _SDL_fbvideo_h
#define _SDL_fbvideo_h
#include <sys/types.h>
#include <termios.h>
#include <linux/fb.h>
#include "SDL_mouse.h"
#include "SDL_mutex.h"
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#include "../SDL_sysvideo.h"
#if SDL_INPUT_TSLIB
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#include "tslib.h"
#endif
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/* Hidden "this" pointer for the video functions */
#define _THIS SDL_VideoDevice *this
/* This is the structure we use to keep track of video memory */
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typedef struct vidmem_bucket
{
struct vidmem_bucket *prev;
int used;
int dirty;
char *base;
unsigned int size;
struct vidmem_bucket *next;
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} vidmem_bucket;
/* Private display data */
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struct SDL_PrivateVideoData
{
int console_fd;
struct fb_var_screeninfo cache_vinfo;
struct fb_var_screeninfo saved_vinfo;
int saved_cmaplen;
__u16 *saved_cmap;
int current_vt;
int saved_vt;
int keyboard_fd;
int saved_kbd_mode;
struct termios saved_kbd_termios;
int mouse_fd;
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#if SDL_INPUT_TSLIB
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struct tsdev *ts_dev;
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char *mapped_mem;
int mapped_memlen;
int mapped_offset;
char *mapped_io;
long mapped_iolen;
int flip_page;
char *flip_address[2];
#define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */
int SDL_nummodes[NUM_MODELISTS];
SDL_Rect **SDL_modelist[NUM_MODELISTS];
vidmem_bucket surfaces;
int surfaces_memtotal;
int surfaces_memleft;
SDL_mutex *hw_lock;
int switched_away;
struct fb_var_screeninfo screen_vinfo;
Uint32 screen_arealen;
Uint8 *screen_contents;
__u16 screen_palette[3 * 256];
void (*wait_vbl) (_THIS);
void (*wait_idle) (_THIS);
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};
/* Old variable names */
#define console_fd (this->hidden->console_fd)
#define current_vt (this->hidden->current_vt)
#define saved_vt (this->hidden->saved_vt)
#define keyboard_fd (this->hidden->keyboard_fd)
#define saved_kbd_mode (this->hidden->saved_kbd_mode)
#define saved_kbd_termios (this->hidden->saved_kbd_termios)
#define mouse_fd (this->hidden->mouse_fd)
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#if SDL_INPUT_TSLIB
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#define ts_dev (this->hidden->ts_dev)
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#define cache_vinfo (this->hidden->cache_vinfo)
#define saved_vinfo (this->hidden->saved_vinfo)
#define saved_cmaplen (this->hidden->saved_cmaplen)
#define saved_cmap (this->hidden->saved_cmap)
#define mapped_mem (this->hidden->mapped_mem)
#define mapped_memlen (this->hidden->mapped_memlen)
#define mapped_offset (this->hidden->mapped_offset)
#define mapped_io (this->hidden->mapped_io)
#define mapped_iolen (this->hidden->mapped_iolen)
#define flip_page (this->hidden->flip_page)
#define flip_address (this->hidden->flip_address)
#define SDL_nummodes (this->hidden->SDL_nummodes)
#define SDL_modelist (this->hidden->SDL_modelist)
#define surfaces (this->hidden->surfaces)
#define surfaces_memtotal (this->hidden->surfaces_memtotal)
#define surfaces_memleft (this->hidden->surfaces_memleft)
#define hw_lock (this->hidden->hw_lock)
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#define switched_away (this->hidden->switched_away)
#define screen_vinfo (this->hidden->screen_vinfo)
#define screen_arealen (this->hidden->screen_arealen)
#define screen_contents (this->hidden->screen_contents)
#define screen_palette (this->hidden->screen_palette)
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#define wait_vbl (this->hidden->wait_vbl)
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#define wait_idle (this->hidden->wait_idle)
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/* Accelerator types that are supported by the driver, but are not
necessarily in the kernel headers on the system we compile on.
*/
#ifndef FB_ACCEL_MATROX_MGAG400
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#define FB_ACCEL_MATROX_MGAG400 26 /* Matrox G400 */
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#endif
#ifndef FB_ACCEL_3DFX_BANSHEE
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#define FB_ACCEL_3DFX_BANSHEE 31 /* 3Dfx Banshee */
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#endif
/* These functions are defined in SDL_fbvideo.c */
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extern void FB_SavePaletteTo(_THIS, int palette_len, __u16 * area);
extern void FB_RestorePaletteFrom(_THIS, int palette_len, __u16 * area);
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/* These are utility functions for working with video surfaces */
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static __inline__ void
FB_AddBusySurface(SDL_Surface * surface)
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((vidmem_bucket *) surface->hwdata)->dirty = 1;
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static __inline__ int
FB_IsSurfaceBusy(SDL_Surface * surface)
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return ((vidmem_bucket *) surface->hwdata)->dirty;
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static __inline__ void
FB_WaitBusySurfaces(_THIS)
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vidmem_bucket *bucket;
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/* Wait for graphic operations to complete */
wait_idle(this);
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/* Clear all surface dirty bits */
for (bucket = &surfaces; bucket; bucket = bucket->next) {
bucket->dirty = 0;
}
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static __inline__ void
FB_dst_to_xy(_THIS, SDL_Surface * dst, int *x, int *y)
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*x = (long) ((char *) dst->pixels - mapped_mem) % this->screen->pitch;
*y = (long) ((char *) dst->pixels - mapped_mem) / this->screen->pitch;
if (dst == this->screen) {
*x += this->offset_x;
*y += this->offset_y;
}
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#endif /* _SDL_fbvideo_h */
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/* vi: set ts=4 sw=4 expandtab: */