Mercurial > sdl-ios-xcode
annotate src/joystick/SDL_sysjoystick.h @ 461:1d36f593078a
Date: Thu, 18 Jul 2002 23:51:40 +0200 (MEST)
From: Krister Walfridsson
Subject: [SDL] src/joystick/bsd/SDL_sysjoystick.c patch
The *BSD USB HID joystick code has two serious bugs:
1. If a joystick reports unhandled hid_input usage (for example HUG_RZ or
HUG_DIAL), then the last handled value will be overwritten with an
arbitrary value. (Fixed in the patch below by adding a default case.)
2. The current code does only handle logical coordinates in the range 0-255,
while a big part of available joysticks report -128 - 127. (This is solved
in the patch below by first center the range around 0, and then stretch
it to the correct range.)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 20 Aug 2002 06:08:42 +0000 |
| parents | f6ffac90895c |
| children | b8d311d90021 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2002
Sam Lantinga <slouken@libsdl.org>
parents:
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 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 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
252
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Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* This is the system specific header for the SDL joystick API */ | |
| 29 | |
| 30 #include "SDL_joystick.h" | |
| 31 | |
| 32 /* The SDL joystick structure */ | |
| 33 struct _SDL_Joystick { | |
| 34 Uint8 index; /* Device index */ | |
| 35 const char *name; /* Joystick name - system dependent */ | |
| 36 | |
| 37 int naxes; /* Number of axis controls on the joystick */ | |
| 38 Sint16 *axes; /* Current axis states */ | |
| 39 | |
| 40 int nhats; /* Number of hats on the joystick */ | |
| 41 Uint8 *hats; /* Current hat states */ | |
| 42 | |
| 43 int nballs; /* Number of trackballs on the joystick */ | |
| 44 struct balldelta { | |
| 45 int dx; | |
| 46 int dy; | |
| 47 } *balls; /* Current ball motion deltas */ | |
| 48 | |
| 49 int nbuttons; /* Number of buttons on the joystick */ | |
| 50 Uint8 *buttons; /* Current button states */ | |
| 51 | |
| 52 struct joystick_hwdata *hwdata; /* Driver dependent information */ | |
| 53 | |
| 54 int ref_count; /* Reference count for multiple opens */ | |
| 55 }; | |
| 56 | |
| 57 /* Function to scan the system for joysticks. | |
| 58 * Joystick 0 should be the system default joystick. | |
| 59 * This function should return the number of available joysticks, or -1 | |
| 60 * on an unrecoverable fatal error. | |
| 61 */ | |
| 62 extern int SDL_SYS_JoystickInit(void); | |
| 63 | |
| 64 /* Function to get the device-dependent name of a joystick */ | |
| 65 extern const char *SDL_SYS_JoystickName(int index); | |
| 66 | |
| 67 /* Function to open a joystick for use. | |
| 68 The joystick to open is specified by the index field of the joystick. | |
| 69 This should fill the nbuttons and naxes fields of the joystick structure. | |
| 70 It returns 0, or -1 if there is an error. | |
| 71 */ | |
| 72 extern int SDL_SYS_JoystickOpen(SDL_Joystick *joystick); | |
| 73 | |
| 74 /* Function to update the state of a joystick - called as a device poll. | |
| 75 * This function shouldn't update the joystick structure directly, | |
| 76 * but instead should call SDL_PrivateJoystick*() to deliver events | |
| 77 * and update joystick device state. | |
| 78 */ | |
| 79 extern void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick); | |
| 80 | |
| 81 /* Function to close a joystick after use */ | |
| 82 extern void SDL_SYS_JoystickClose(SDL_Joystick *joystick); | |
| 83 | |
| 84 /* Function to perform any system-specific joystick related cleanup */ | |
| 85 extern void SDL_SYS_JoystickQuit(void); | |
| 86 |