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SDL_dgavideo.h
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/
SDL_dgavideo.h
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/*
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
*/
#ifndef _SDL_dgavideo_h
#define _SDL_dgavideo_h
#include <X11/Xlib.h>
#include "SDL_mouse.h"
#include "SDL_mutex.h"
#include "../SDL_sysvideo.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)
#define event_lock (this->hidden->event_lock)
#endif /* _SDL_dgavideo_h */