1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 Sam Lantinga 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with this library; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 18 19 Sam Lantinga 20 slouken@libsdl.org 21 */ 22 #include "SDL_config.h" 23 24 #ifndef _SDL_dgavideo_h 25 #define _SDL_dgavideo_h 26 27 #include <X11/Xlib.h> 28 29 /* Apparently some X11 systems can't include this multiple times... */ 30 #ifndef SDL_INCLUDED_XLIBINT_H 31 #define SDL_INCLUDED_XLIBINT_H 1 32 #include <X11/Xlibint.h> 33 #endif 34 35 #include <X11/Xproto.h> 36 37 #include "SDL_mouse.h" 38 #include "SDL_mutex.h" 39 #include "../SDL_sysvideo.h" 40 41 /* Hidden "this" pointer for the video functions */ 42 #define _THIS SDL_VideoDevice *this 43 44 /* Define this if you need the DGA driver to be thread-safe */ 45 #define LOCK_DGA_DISPLAY 46 #ifdef LOCK_DGA_DISPLAY 47 #define LOCK_DISPLAY() SDL_mutexP(event_lock) 48 #define UNLOCK_DISPLAY() SDL_mutexV(event_lock) 49 #else 50 #define LOCK_DISPLAY() 51 #define UNLOCK_DISPLAY() 52 #endif 53 54 55 /* This is the structure we use to keep track of video memory */ 56 typedef struct vidmem_bucket { 57 struct vidmem_bucket *prev; 58 int used; 59 int dirty; 60 Uint8 *base; 61 unsigned int size; 62 struct vidmem_bucket *next; 63 } vidmem_bucket; 64 65 /* Private display data */ 66 struct SDL_PrivateVideoData { 67 Display *DGA_Display; 68 Colormap DGA_colormap; 69 int visualClass; 70 71 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ 72 int SDL_nummodes[NUM_MODELISTS]; 73 SDL_Rect **SDL_modelist[NUM_MODELISTS]; 74 75 /* Information for the video surface */ 76 Uint8 *memory_base; 77 int memory_pitch; 78 SDL_mutex *hw_lock; 79 int sync_needed; 80 int was_flipped; 81 82 /* Information for hardware surfaces */ 83 vidmem_bucket surfaces; 84 int surfaces_memtotal; 85 int surfaces_memleft; 86 87 /* Information for double-buffering */ 88 int flip_page; 89 int flip_yoffset[2]; 90 Uint8 *flip_address[2]; 91 92 /* Used to handle DGA events */ 93 int event_base; 94 #ifdef LOCK_DGA_DISPLAY 95 SDL_mutex *event_lock; 96 #endif 97 98 /* Screensaver settings */ 99 int allow_screensaver; 100 }; 101 102 /* Old variable names */ 103 #define DGA_Display (this->hidden->DGA_Display) 104 #define DGA_Screen DefaultScreen(DGA_Display) 105 #define DGA_colormap (this->hidden->DGA_colormap) 106 #define DGA_visualClass (this->hidden->visualClass) 107 #define memory_base (this->hidden->memory_base) 108 #define memory_pitch (this->hidden->memory_pitch) 109 #define flip_page (this->hidden->flip_page) 110 #define flip_yoffset (this->hidden->flip_yoffset) 111 #define flip_address (this->hidden->flip_address) 112 #define sync_needed (this->hidden->sync_needed) 113 #define was_flipped (this->hidden->was_flipped) 114 #define SDL_nummodes (this->hidden->SDL_nummodes) 115 #define SDL_modelist (this->hidden->SDL_modelist) 116 #define surfaces (this->hidden->surfaces) 117 #define surfaces_memtotal (this->hidden->surfaces_memtotal) 118 #define surfaces_memleft (this->hidden->surfaces_memleft) 119 #define hw_lock (this->hidden->hw_lock) 120 #define DGA_event_base (this->hidden->event_base) 121 #define event_lock (this->hidden->event_lock) 122 #define allow_screensaver (this->hidden->allow_screensaver) 123 124 #endif /* _SDL_dgavideo_h */ 125