src/haptic/SDL_syshaptic.h
author Sam Lantinga <slouken@libsdl.org>
Mon, 25 Aug 2008 09:55:03 +0000
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 2008 Edgar Simo
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include "SDL_haptic.h"
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/*
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 * Number of haptic devices on the system.
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 */
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extern Uint8 SDL_numhaptics;
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struct haptic_effect
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{
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    SDL_HapticEffect effect;    /* The current event */
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    struct haptic_hweffect *hweffect;   /* The hardware behind the event */
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};
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/*
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 * The real SDL_Haptic struct.
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 */
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struct _SDL_Haptic
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{
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    Uint8 index;                /* Stores index it is attached to */
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    struct haptic_effect *effects;      /* Allocated effects */
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    int neffects;               /* Maximum amount of effects */
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    int nplaying;               /* Maximum amount of effects to play at the same time */
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    unsigned int supported;     /* Supported effects */
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    int naxes;                  /* Number of axes on the device. */
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    struct haptic_hwdata *hwdata;       /* Driver dependent */
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    int ref_count;              /* Count for multiple opens */
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};
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/* 
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 * Scans the system for haptic devices.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticInit(void);
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/*
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 * Gets the device dependent name of the haptic device
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 */
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extern const char *SDL_SYS_HapticName(int index);
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/*
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 * Opens the haptic device for usage.  The haptic device should have
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 * the index value set previously.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticOpen(SDL_Haptic * haptic);
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/*
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 * Returns the index of the haptic core pointer or -1 if none is found.
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 */
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int SDL_SYS_HapticMouse(void);
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/*
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 * Checks to see if the joystick has haptic capabilities.
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 *
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 * Returns >0 if haptic capabilities are detected, 0 if haptic
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 * capabilities aren't detected and -1 on error.
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 */
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extern int SDL_SYS_JoystickIsHaptic(SDL_Joystick * joystick);
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/*
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 * Opens the haptic device for usage using the same device as
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 * the joystick.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticOpenFromJoystick(SDL_Haptic * haptic,
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                                          SDL_Joystick * joystick);
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/*
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 * Checks to see if haptic device and joystick device are the same.
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 *
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 * Returns 1 if they are the same, 0 if they aren't.
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 */
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extern int SDL_SYS_JoystickSameHaptic(SDL_Haptic * haptic,
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                                      SDL_Joystick * joystick);
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/*
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 * Closes a haptic device after usage.
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 */
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extern void SDL_SYS_HapticClose(SDL_Haptic * haptic);
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/*
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 * Performs a cleanup on the haptic subsystem.
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 */
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extern void SDL_SYS_HapticQuit(void);
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/*
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 * Creates a new haptic effect on the haptic device using base
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 * as a template for the effect.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticNewEffect(SDL_Haptic * haptic,
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                                   struct haptic_effect *effect,
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                                   SDL_HapticEffect * base);
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/*
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 * Updates the haptic effect on the haptic device using data
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 * as a template.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticUpdateEffect(SDL_Haptic * haptic,
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                                      struct haptic_effect *effect,
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                                      SDL_HapticEffect * data);
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/*
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 * Runs the effect on the haptic device.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticRunEffect(SDL_Haptic * haptic,
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                                   struct haptic_effect *effect,
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                                   Uint32 iterations);
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/*
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 * Stops the effect on the haptic device.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticStopEffect(SDL_Haptic * haptic,
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                                    struct haptic_effect *effect);
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/*
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 * Cleanups up the effect on the haptic device.
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 */
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extern void SDL_SYS_HapticDestroyEffect(SDL_Haptic * haptic,
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                                        struct haptic_effect *effect);
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/*
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 * Queries the device for the status of effect.
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 *
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 * Returns 0 if device is stopped, >0 if device is playing and
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 * -1 on error.
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 */
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extern int SDL_SYS_HapticGetEffectStatus(SDL_Haptic * haptic,
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                                         struct haptic_effect *effect);
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/*
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 * Sets the global gain of the haptic device.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticSetGain(SDL_Haptic * haptic, int gain);
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/*
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 * Sets the autocenter feature of the haptic device.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticSetAutocenter(SDL_Haptic * haptic, int autocenter);
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/*
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 * Pauses the haptic device.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticPause(SDL_Haptic * haptic);
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/*
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 * Unpauses the haptic device.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticUnpause(SDL_Haptic * haptic);
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/*
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 * Stops all the currently playing haptic effects on the device.
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 *
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 * Returns 0 on success, -1 on error.
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 */
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extern int SDL_SYS_HapticStopAll(SDL_Haptic * haptic);