Mercurial > sdl-ios-xcode
view src/video/dga/SDL_dgavideo.h @ 892:dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
From: David MacCormack
Subject: [SDL] Linux joystick patch
I recently got myself a PS2 -> USB converter (a super joybox 5). It
accepts 4 PSX/PS2 controllers. It's implemented as a HID, which is nice
because it doesn't require its own driver, but the problem is that it's
implemented as a *single* HID -- that is, it shows up as a single
joystick with 19 axes, 4 hats, and 48 buttons. This poses a problem for a
number of apps which use SDL (stella, fce ultra, zsnes, to name a few) and
see only a single (physical) joystick even though there are really 4
(logical) joysticks. There are a number of these types of devices on the
market, and I've seen others post messages (in the zsnes forum, for
example) with the same problem, so I came up with what I think is a pretty
generic solution.
I patched src/joystick/linux/SDL_sysjoystic.c to include support for
logical joysticks; basically, it's a static array and supporting functions
that map a single physical joystick to multiple logical joysticks. The
attached patch has the new code. It's wrapped inside #ifndef
statements so that you can get the old behavior if you want.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 16 May 2004 18:46:24 +0000 |
| parents | b8d311d90021 |
| children | c9b51268668f |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif #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 */