diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/joystick/SDL_joystick.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/joystick/SDL_joystick.c | 573 |
1 files changed, 0 insertions, 573 deletions
diff --git a/distrib/sdl-1.2.12/src/joystick/SDL_joystick.c b/distrib/sdl-1.2.12/src/joystick/SDL_joystick.c deleted file mode 100644 index 5984a32..0000000 --- a/distrib/sdl-1.2.12/src/joystick/SDL_joystick.c +++ /dev/null @@ -1,573 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2006 Sam Lantinga - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Sam Lantinga - slouken@libsdl.org -*/ -#include "SDL_config.h" - -/* This is the joystick API for Simple DirectMedia Layer */ - -#include "SDL_events.h" -#include "SDL_sysjoystick.h" -#include "SDL_joystick_c.h" -#if !SDL_EVENTS_DISABLED -#include "../events/SDL_events_c.h" -#endif - -/* This is used for Quake III Arena */ -#if SDL_EVENTS_DISABLED -#define SDL_Lock_EventThread() -#define SDL_Unlock_EventThread() -#endif - -Uint8 SDL_numjoysticks = 0; -SDL_Joystick **SDL_joysticks = NULL; -static SDL_Joystick *default_joystick = NULL; - -int SDL_JoystickInit(void) -{ - int arraylen; - int status; - - SDL_numjoysticks = 0; - status = SDL_SYS_JoystickInit(); - if ( status >= 0 ) { - arraylen = (status+1)*sizeof(*SDL_joysticks); - SDL_joysticks = (SDL_Joystick **)SDL_malloc(arraylen); - if ( SDL_joysticks == NULL ) { - SDL_numjoysticks = 0; - } else { - SDL_memset(SDL_joysticks, 0, arraylen); - SDL_numjoysticks = status; - } - status = 0; - } - default_joystick = NULL; - return(status); -} - -/* - * Count the number of joysticks attached to the system - */ -int SDL_NumJoysticks(void) -{ - return SDL_numjoysticks; -} - -/* - * Get the implementation dependent name of a joystick - */ -const char *SDL_JoystickName(int device_index) -{ - if ( (device_index < 0) || (device_index >= SDL_numjoysticks) ) { - SDL_SetError("There are %d joysticks available", - SDL_numjoysticks); - return(NULL); - } - return(SDL_SYS_JoystickName(device_index)); -} - -/* - * Open a joystick for use - the index passed as an argument refers to - * the N'th joystick on the system. This index is the value which will - * identify this joystick in future joystick events. - * - * This function returns a joystick identifier, or NULL if an error occurred. - */ -SDL_Joystick *SDL_JoystickOpen(int device_index) -{ - int i; - SDL_Joystick *joystick; - - if ( (device_index < 0) || (device_index >= SDL_numjoysticks) ) { - SDL_SetError("There are %d joysticks available", - SDL_numjoysticks); - return(NULL); - } - - /* If the joystick is already open, return it */ - for ( i=0; SDL_joysticks[i]; ++i ) { - if ( device_index == SDL_joysticks[i]->index ) { - joystick = SDL_joysticks[i]; - ++joystick->ref_count; - return(joystick); - } - } - - /* Create and initialize the joystick */ - joystick = (SDL_Joystick *)SDL_malloc((sizeof *joystick)); - if ( joystick != NULL ) { - SDL_memset(joystick, 0, (sizeof *joystick)); - joystick->index = device_index; - if ( SDL_SYS_JoystickOpen(joystick) < 0 ) { - SDL_free(joystick); - joystick = NULL; - } else { - if ( joystick->naxes > 0 ) { - joystick->axes = (Sint16 *)SDL_malloc - (joystick->naxes*sizeof(Sint16)); - } - if ( joystick->nhats > 0 ) { - joystick->hats = (Uint8 *)SDL_malloc - (joystick->nhats*sizeof(Uint8)); - } - if ( joystick->nballs > 0 ) { - joystick->balls = (struct balldelta *)SDL_malloc - (joystick->nballs*sizeof(*joystick->balls)); - } - if ( joystick->nbuttons > 0 ) { - joystick->buttons = (Uint8 *)SDL_malloc - (joystick->nbuttons*sizeof(Uint8)); - } - if ( ((joystick->naxes > 0) && !joystick->axes) - || ((joystick->nhats > 0) && !joystick->hats) - || ((joystick->nballs > 0) && !joystick->balls) - || ((joystick->nbuttons > 0) && !joystick->buttons)) { - SDL_OutOfMemory(); - SDL_JoystickClose(joystick); - joystick = NULL; - } - if ( joystick->axes ) { - SDL_memset(joystick->axes, 0, - joystick->naxes*sizeof(Sint16)); - } - if ( joystick->hats ) { - SDL_memset(joystick->hats, 0, - joystick->nhats*sizeof(Uint8)); - } - if ( joystick->balls ) { - SDL_memset(joystick->balls, 0, - joystick->nballs*sizeof(*joystick->balls)); - } - if ( joystick->buttons ) { - SDL_memset(joystick->buttons, 0, - joystick->nbuttons*sizeof(Uint8)); - } - } - } - if ( joystick ) { - /* Add joystick to list */ - ++joystick->ref_count; - SDL_Lock_EventThread(); - for ( i=0; SDL_joysticks[i]; ++i ) - /* Skip to next joystick */; - SDL_joysticks[i] = joystick; - SDL_Unlock_EventThread(); - } - return(joystick); -} - -/* - * Returns 1 if the joystick has been opened, or 0 if it has not. - */ -int SDL_JoystickOpened(int device_index) -{ - int i, opened; - - opened = 0; - for ( i=0; SDL_joysticks[i]; ++i ) { - if ( SDL_joysticks[i]->index == (Uint8)device_index ) { - opened = 1; - break; - } - } - return(opened); -} - -static int ValidJoystick(SDL_Joystick **joystick) -{ - int valid; - - if ( *joystick == NULL ) { - *joystick = default_joystick; - } - if ( *joystick == NULL ) { - SDL_SetError("Joystick hasn't been opened yet"); - valid = 0; - } else { - valid = 1; - } - return valid; -} - -/* - * Get the device index of an opened joystick. - */ -int SDL_JoystickIndex(SDL_Joystick *joystick) -{ - if ( ! ValidJoystick(&joystick) ) { - return(-1); - } - return(joystick->index); -} - -/* - * Get the number of multi-dimensional axis controls on a joystick - */ -int SDL_JoystickNumAxes(SDL_Joystick *joystick) -{ - if ( ! ValidJoystick(&joystick) ) { - return(-1); - } - return(joystick->naxes); -} - -/* - * Get the number of hats on a joystick - */ -int SDL_JoystickNumHats(SDL_Joystick *joystick) -{ - if ( ! ValidJoystick(&joystick) ) { - return(-1); - } - return(joystick->nhats); -} - -/* - * Get the number of trackballs on a joystick - */ -int SDL_JoystickNumBalls(SDL_Joystick *joystick) -{ - if ( ! ValidJoystick(&joystick) ) { - return(-1); - } - return(joystick->nballs); -} - -/* - * Get the number of buttons on a joystick - */ -int SDL_JoystickNumButtons(SDL_Joystick *joystick) -{ - if ( ! ValidJoystick(&joystick) ) { - return(-1); - } - return(joystick->nbuttons); -} - -/* - * Get the current state of an axis control on a joystick - */ -Sint16 SDL_JoystickGetAxis(SDL_Joystick *joystick, int axis) -{ - Sint16 state; - - if ( ! ValidJoystick(&joystick) ) { - return(0); - } - if ( axis < joystick->naxes ) { - state = joystick->axes[axis]; - } else { - SDL_SetError("Joystick only has %d axes", joystick->naxes); - state = 0; - } - return(state); -} - -/* - * Get the current state of a hat on a joystick - */ -Uint8 SDL_JoystickGetHat(SDL_Joystick *joystick, int hat) -{ - Uint8 state; - - if ( ! ValidJoystick(&joystick) ) { - return(0); - } - if ( hat < joystick->nhats ) { - state = joystick->hats[hat]; - } else { - SDL_SetError("Joystick only has %d hats", joystick->nhats); - state = 0; - } - return(state); -} - -/* - * Get the ball axis change since the last poll - */ -int SDL_JoystickGetBall(SDL_Joystick *joystick, int ball, int *dx, int *dy) -{ - int retval; - - if ( ! ValidJoystick(&joystick) ) { - return(-1); - } - - retval = 0; - if ( ball < joystick->nballs ) { - if ( dx ) { - *dx = joystick->balls[ball].dx; - } - if ( dy ) { - *dy = joystick->balls[ball].dy; - } - joystick->balls[ball].dx = 0; - joystick->balls[ball].dy = 0; - } else { - SDL_SetError("Joystick only has %d balls", joystick->nballs); - retval = -1; - } - return(retval); -} - -/* - * Get the current state of a button on a joystick - */ -Uint8 SDL_JoystickGetButton(SDL_Joystick *joystick, int button) -{ - Uint8 state; - - if ( ! ValidJoystick(&joystick) ) { - return(0); - } - if ( button < joystick->nbuttons ) { - state = joystick->buttons[button]; - } else { - SDL_SetError("Joystick only has %d buttons",joystick->nbuttons); - state = 0; - } - return(state); -} - -/* - * Close a joystick previously opened with SDL_JoystickOpen() - */ -void SDL_JoystickClose(SDL_Joystick *joystick) -{ - int i; - - if ( ! ValidJoystick(&joystick) ) { - return; - } - - /* First decrement ref count */ - if ( --joystick->ref_count > 0 ) { - return; - } - - /* Lock the event queue - prevent joystick polling */ - SDL_Lock_EventThread(); - - if ( joystick == default_joystick ) { - default_joystick = NULL; - } - SDL_SYS_JoystickClose(joystick); - - /* Remove joystick from list */ - for ( i=0; SDL_joysticks[i]; ++i ) { - if ( joystick == SDL_joysticks[i] ) { - SDL_memcpy(&SDL_joysticks[i], &SDL_joysticks[i+1], - (SDL_numjoysticks-i)*sizeof(joystick)); - break; - } - } - - /* Let the event thread keep running */ - SDL_Unlock_EventThread(); - - /* Free the data associated with this joystick */ - if ( joystick->axes ) { - SDL_free(joystick->axes); - } - if ( joystick->hats ) { - SDL_free(joystick->hats); - } - if ( joystick->balls ) { - SDL_free(joystick->balls); - } - if ( joystick->buttons ) { - SDL_free(joystick->buttons); - } - SDL_free(joystick); -} - -void SDL_JoystickQuit(void) -{ - /* Stop the event polling */ - SDL_Lock_EventThread(); - SDL_numjoysticks = 0; - SDL_Unlock_EventThread(); - - /* Quit the joystick setup */ - SDL_SYS_JoystickQuit(); - if ( SDL_joysticks ) { - SDL_free(SDL_joysticks); - SDL_joysticks = NULL; - } -} - - -/* These are global for SDL_sysjoystick.c and SDL_events.c */ - -int SDL_PrivateJoystickAxis(SDL_Joystick *joystick, Uint8 axis, Sint16 value) -{ - int posted; - - /* Update internal joystick state */ - joystick->axes[axis] = value; - - /* Post the event, if desired */ - posted = 0; -#if !SDL_EVENTS_DISABLED - if ( SDL_ProcessEvents[SDL_JOYAXISMOTION] == SDL_ENABLE ) { - SDL_Event event; - event.type = SDL_JOYAXISMOTION; - event.jaxis.which = joystick->index; - event.jaxis.axis = axis; - event.jaxis.value = value; - if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { - posted = 1; - SDL_PushEvent(&event); - } - } -#endif /* !SDL_EVENTS_DISABLED */ - return(posted); -} - -int SDL_PrivateJoystickHat(SDL_Joystick *joystick, Uint8 hat, Uint8 value) -{ - int posted; - - /* Update internal joystick state */ - joystick->hats[hat] = value; - - /* Post the event, if desired */ - posted = 0; -#if !SDL_EVENTS_DISABLED - if ( SDL_ProcessEvents[SDL_JOYHATMOTION] == SDL_ENABLE ) { - SDL_Event event; - event.jhat.type = SDL_JOYHATMOTION; - event.jhat.which = joystick->index; - event.jhat.hat = hat; - event.jhat.value = value; - if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { - posted = 1; - SDL_PushEvent(&event); - } - } -#endif /* !SDL_EVENTS_DISABLED */ - return(posted); -} - -int SDL_PrivateJoystickBall(SDL_Joystick *joystick, Uint8 ball, - Sint16 xrel, Sint16 yrel) -{ - int posted; - - /* Update internal mouse state */ - joystick->balls[ball].dx += xrel; - joystick->balls[ball].dy += yrel; - - /* Post the event, if desired */ - posted = 0; -#if !SDL_EVENTS_DISABLED - if ( SDL_ProcessEvents[SDL_JOYBALLMOTION] == SDL_ENABLE ) { - SDL_Event event; - event.jball.type = SDL_JOYBALLMOTION; - event.jball.which = joystick->index; - event.jball.ball = ball; - event.jball.xrel = xrel; - event.jball.yrel = yrel; - if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { - posted = 1; - SDL_PushEvent(&event); - } - } -#endif /* !SDL_EVENTS_DISABLED */ - return(posted); -} - -int SDL_PrivateJoystickButton(SDL_Joystick *joystick, Uint8 button, Uint8 state) -{ - int posted; -#if !SDL_EVENTS_DISABLED - SDL_Event event; - - switch ( state ) { - case SDL_PRESSED: - event.type = SDL_JOYBUTTONDOWN; - break; - case SDL_RELEASED: - event.type = SDL_JOYBUTTONUP; - break; - default: - /* Invalid state -- bail */ - return(0); - } -#endif /* !SDL_EVENTS_DISABLED */ - - /* Update internal joystick state */ - joystick->buttons[button] = state; - - /* Post the event, if desired */ - posted = 0; -#if !SDL_EVENTS_DISABLED - if ( SDL_ProcessEvents[event.type] == SDL_ENABLE ) { - event.jbutton.which = joystick->index; - event.jbutton.button = button; - event.jbutton.state = state; - if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { - posted = 1; - SDL_PushEvent(&event); - } - } -#endif /* !SDL_EVENTS_DISABLED */ - return(posted); -} - -void SDL_JoystickUpdate(void) -{ - int i; - - for ( i=0; SDL_joysticks[i]; ++i ) { - SDL_SYS_JoystickUpdate(SDL_joysticks[i]); - } -} - -int SDL_JoystickEventState(int state) -{ -#if SDL_EVENTS_DISABLED - return SDL_IGNORE; -#else - const Uint8 event_list[] = { - SDL_JOYAXISMOTION, SDL_JOYBALLMOTION, SDL_JOYHATMOTION, - SDL_JOYBUTTONDOWN, SDL_JOYBUTTONUP, - }; - unsigned int i; - - switch (state) { - case SDL_QUERY: - state = SDL_IGNORE; - for ( i=0; i<SDL_arraysize(event_list); ++i ) { - state = SDL_EventState(event_list[i],SDL_QUERY); - if ( state == SDL_ENABLE ) { - break; - } - } - break; - default: - for ( i=0; i<SDL_arraysize(event_list); ++i ) { - SDL_EventState(event_list[i], state); - } - break; - } - return(state); -#endif /* SDL_EVENTS_DISABLED */ -} |