annotate src/joystick/SDL_sysjoystick.h @ 4442:31b0f2e06e3c SDL-1.2

SDL-1.2: Quartz fullscreen video contentRect was used uninitialized.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 25 Apr 2010 20:16:38 -0400
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is SDL_free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* This is the system specific header for the SDL joystick API */
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25
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26 #include "SDL_joystick.h"
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27
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28 /* The SDL joystick structure */
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29 struct _SDL_Joystick {
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30 Uint8 index; /* Device index */
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31 const char *name; /* Joystick name - system dependent */
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32
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33 int naxes; /* Number of axis controls on the joystick */
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34 Sint16 *axes; /* Current axis states */
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35
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36 int nhats; /* Number of hats on the joystick */
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37 Uint8 *hats; /* Current hat states */
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38
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39 int nballs; /* Number of trackballs on the joystick */
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40 struct balldelta {
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41 int dx;
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42 int dy;
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43 } *balls; /* Current ball motion deltas */
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44
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45 int nbuttons; /* Number of buttons on the joystick */
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46 Uint8 *buttons; /* Current button states */
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47
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48 struct joystick_hwdata *hwdata; /* Driver dependent information */
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49
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50 int ref_count; /* Reference count for multiple opens */
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51 };
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52
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53 /* Function to scan the system for joysticks.
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54 * Joystick 0 should be the system default joystick.
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55 * This function should return the number of available joysticks, or -1
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56 * on an unrecoverable fatal error.
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57 */
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58 extern int SDL_SYS_JoystickInit(void);
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59
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60 /* Function to get the device-dependent name of a joystick */
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61 extern const char *SDL_SYS_JoystickName(int index);
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62
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63 /* Function to open a joystick for use.
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64 The joystick to open is specified by the index field of the joystick.
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65 This should fill the nbuttons and naxes fields of the joystick structure.
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66 It returns 0, or -1 if there is an error.
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67 */
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68 extern int SDL_SYS_JoystickOpen(SDL_Joystick *joystick);
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69
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70 /* Function to update the state of a joystick - called as a device poll.
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71 * This function shouldn't update the joystick structure directly,
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72 * but instead should call SDL_PrivateJoystick*() to deliver events
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73 * and update joystick device state.
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74 */
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75 extern void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick);
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76
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77 /* Function to close a joystick after use */
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78 extern void SDL_SYS_JoystickClose(SDL_Joystick *joystick);
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79
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80 /* Function to perform any system-specific joystick related cleanup */
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81 extern void SDL_SYS_JoystickQuit(void);
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82