/*

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_dgavideo_h

#define _SDL_dgavideo_h

#include <X11/Xlib.h>

#include "SDL_mouse.h"

#include "SDL_mutex.h"

/* 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

};

/* 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)

#endif /* _SDL_dgavideo_h */