fbvideo.h

libminigui-1.3.0.tar.gz。 miniGUI的库函数源代码！

/*
**  $Id: fbvideo.h,v 1.4 2003/11/23 05:40:52 weiym Exp $
**  
**  Port to MiniGUI by Wei Yongming (2001/10/03).
**  Copyright (C) 2001 ~ 2002 Wei Yongming.
**  Copyright (C) 2003 Feynman Software.
**
**  SDL - Simple DirectMedia Layer
**  Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
*/

/*
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#ifndef _GAL_fbvideo_h
#define _GAL_fbvideo_h

#include <sys/types.h>
#include <termios.h>
#include <linux/fb.h>

#include "sysvideo.h"

/* Hidden "this" pointer for the video functions */
#define _THIS	GAL_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 GAL_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;

	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 GAL_nummodes[NUM_MODELISTS];
	GAL_Rect **GAL_modelist[NUM_MODELISTS];

	vidmem_bucket surfaces;
	int surfaces_memtotal;
	int surfaces_memleft;

	GAL_mutex *hw_lock;

	void (*wait_vbl)(_THIS);
	void (*wait_idle)(_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 GAL_nummodes		(this->hidden->GAL_nummodes)
#define GAL_modelist		(this->hidden->GAL_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 wait_vbl		(this->hidden->wait_vbl)
#define wait_idle		(this->hidden->wait_idle)

/* 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 GAL_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(GAL_Surface *surface)
{
	((vidmem_bucket *)surface->hwdata)->dirty = 1;
}

static __inline__ int FB_IsSurfaceBusy(GAL_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, GAL_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;
	}
}

#endif /* _GAL_fbvideo_h */