/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2006 Sam Lantinga

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

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    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

    Lesser General Public License for more details.

    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

    slouken@libsdl.org

*/

#include "SDL_config.h"

#ifndef _SDL_dgavideo_h

#define _SDL_dgavideo_h

#include <X11/Xlib.h>

#include <X11/Xlibint.h>

#include <X11/Xproto.h>

#include "SDL_mouse.h"

#include "SDL_mutex.h"

#include "../SDL_sysvideo.h"

#if SDL_VIDEO_DRIVER_X11_DPMS

#include <X11/extensions/dpms.h>

#endif

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

#define _THIS	SDL_VideoDevice *this

/* Define this if you need the DGA driver to be thread-safe */

#define LOCK_DGA_DISPLAY

#ifdef LOCK_DGA_DISPLAY

#define LOCK_DISPLAY()		SDL_mutexP(event_lock)

#define UNLOCK_DISPLAY()	SDL_mutexV(event_lock)

#else

#define LOCK_DISPLAY()

#define UNLOCK_DISPLAY()

#endif

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

typedef struct vidmem_bucket {

	struct vidmem_bucket *prev;

	int used;

	int dirty;

	Uint8 *base;

	unsigned int size;

	struct vidmem_bucket *next;

} vidmem_bucket;

/* Private display data */

struct SDL_PrivateVideoData {

	Display *DGA_Display;

	Colormap DGA_colormap;

	int visualClass;

#define NUM_MODELISTS	4		/* 8, 16, 24, and 32 bits-per-pixel */

	int SDL_nummodes[NUM_MODELISTS];

	SDL_Rect **SDL_modelist[NUM_MODELISTS];

	/* Information for the video surface */

	Uint8 *memory_base;

	int memory_pitch;

	SDL_mutex *hw_lock;

	int sync_needed;

	int was_flipped;

	/* Information for hardware surfaces */

	vidmem_bucket surfaces;

	int surfaces_memtotal;

	int surfaces_memleft;

	/* Information for double-buffering */

	int flip_page;

	int flip_yoffset[2];

	Uint8 *flip_address[2];

	/* Used to handle DGA events */

	int event_base;

#ifdef LOCK_DGA_DISPLAY

	SDL_mutex *event_lock;

#endif

	/* Screensaver settings */

	int screensaver_timeout;

	BOOL dpms_enabled;

};

/* Old variable names */

#define DGA_Display		(this->hidden->DGA_Display)

#define DGA_Screen		DefaultScreen(DGA_Display)

#define DGA_colormap		(this->hidden->DGA_colormap)

#define DGA_visualClass		(this->hidden->visualClass)

#define memory_base		(this->hidden->memory_base)

#define memory_pitch		(this->hidden->memory_pitch)

#define flip_page		(this->hidden->flip_page)

#define flip_yoffset		(this->hidden->flip_yoffset)

#define flip_address		(this->hidden->flip_address)

#define sync_needed		(this->hidden->sync_needed)

#define was_flipped		(this->hidden->was_flipped)

#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 DGA_event_base		(this->hidden->event_base)

#define event_lock		(this->hidden->event_lock)

#define screensaver_timeout	(this->hidden->screensaver_timeout)

#define dpms_enabled		(this->hidden->dpms_enabled)

#endif /* _SDL_dgavideo_h */