/*

SDL - Simple DirectMedia Layer

This library is free software; you can redistribute it and/or

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

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

Sam Lantinga

#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"

#include "../SDL_sysvideo.h"

#if SDL_INPUT_TSLIB

#include "tslib.h"

#endif

/* Hidden "this" pointer for the video functions */

#define _THIS SDL_VideoDevice *this

/* This is the structure we use to keep track of video memory */

typedef struct vidmem_bucket {

struct vidmem_bucket *prev;

int used;

int dirty;

char *base;

unsigned int size;

struct vidmem_bucket *next;

} vidmem_bucket;

/* Private display data */

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;

struct tsdev *ts_dev;

#endif

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);

};

/* 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)

#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)

#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)

/* 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

#define FB_ACCEL_MATROX_MGAG400 26 /* Matrox G400 */

#endif

#ifndef FB_ACCEL_3DFX_BANSHEE

#define FB_ACCEL_3DFX_BANSHEE 31 /* 3Dfx Banshee */

#endif

/* These functions are defined in SDL_fbvideo.c */

extern void FB_SavePaletteTo(_THIS, int palette_len, __u16 *area);

extern void FB_RestorePaletteFrom(_THIS, int palette_len, __u16 *area);

/* These are utility functions for working with video surfaces */

static __inline__ void FB_AddBusySurface(SDL_Surface *surface)

{

((vidmem_bucket *)surface->hwdata)->dirty = 1;

}

static __inline__ int FB_IsSurfaceBusy(SDL_Surface *surface)

{

return ((vidmem_bucket *)surface->hwdata)->dirty;

}

static __inline__ void FB_WaitBusySurfaces(_THIS)

{

vidmem_bucket *bucket;

/* Wait for graphic operations to complete */

wait_idle(this);

/* Clear all surface dirty bits */

for ( bucket=&surfaces; bucket; bucket=bucket->next ) {

bucket->dirty = 0;

}

}

static __inline__ void FB_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y)

{

*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;

}

}