| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 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 */ |