Initial revision
--HG-- extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401
This commit is contained in:
Sam Lantinga
commit
2f110628a7
892 changed files with 170313 additions and 0 deletions
322
src/joystick/macos/SDL_sysjoystick.c
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322
src/joystick/macos/SDL_sysjoystick.c
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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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 Library General Public
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License as published by the Free Software Foundation; either
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version 2 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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Sam Lantinga
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slouken@devolution.com
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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"@(#) $Id$";
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#endif
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/* SDL stuff -- "SDL_sysjoystick.c"
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MacOS joystick functions by Frederick Reitberger
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The code that follows is meant for SDL. Use at your own risk.
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*/
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#include <string.h>
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#include <InputSprocket.h>
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#include "SDL_error.h"
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#include "SDL_joystick.h"
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#include "SDL_sysjoystick.h"
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#include "SDL_joystick_c.h"
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/* The max number of joysticks we will detect */
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#define MAX_JOYSTICKS 16
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/* Limit ourselves to 32 elements per device */
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#define kMaxReferences 32
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#define ISpSymmetricAxisToFloat(axis) ((((float) axis) - kISpAxisMiddle) / (kISpAxisMaximum-kISpAxisMiddle))
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#define ISpAsymmetricAxisToFloat(axis) (((float) axis) / (kISpAxisMaximum))
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static ISpDeviceReference SYS_Joysticks[MAX_JOYSTICKS];
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static ISpElementListReference SYS_Elements[MAX_JOYSTICKS];
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static ISpDeviceDefinition SYS_DevDef[MAX_JOYSTICKS];
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struct joystick_hwdata
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{
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char name[64];
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/* Uint8 id;*/
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ISpElementReference refs[kMaxReferences];
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/* gonna need some sort of mapping info */
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};
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/* Function to scan the system for joysticks.
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* Joystick 0 should be the system default joystick.
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* This function should return the number of available joysticks, or -1
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* on an unrecoverable fatal error.
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*/
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int SDL_SYS_JoystickInit(void)
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{
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static ISpDeviceClass classes[4] = {
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kISpDeviceClass_Joystick,
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kISpDeviceClass_Gamepad,
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kISpDeviceClass_Wheel,
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0
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};
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OSErr err;
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int i;
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UInt32 count, numJoysticks;
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if ( (Ptr)0 == (Ptr)ISpStartup ) {
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SDL_SetError("InputSprocket not installed");
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return -1; // InputSprocket not installed
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}
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if( (Ptr)0 == (Ptr)ISpGetVersion ) {
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SDL_SetError("InputSprocket not version 1.1 or newer");
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return -1; // old version of ISp (not at least 1.1)
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}
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ISpStartup();
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/* Get all the joysticks */
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numJoysticks = 0;
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for ( i=0; classes[i]; ++i ) {
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count = 0;
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err = ISpDevices_ExtractByClass(
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classes[i],
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MAX_JOYSTICKS-numJoysticks,
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&count,
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&SYS_Joysticks[numJoysticks]);
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numJoysticks += count;
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}
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for(i = 0; i < numJoysticks; i++)
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{
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ISpDevice_GetDefinition(
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SYS_Joysticks[i], sizeof(ISpDeviceDefinition),
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&SYS_DevDef[i]);
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err = ISpElementList_New(
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0, NULL,
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&SYS_Elements[i], 0);
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if (err) {
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SDL_OutOfMemory();
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return -1;
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}
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ISpDevice_GetElementList(
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SYS_Joysticks[i],
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&SYS_Elements[i]);
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}
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ISpDevices_Deactivate(numJoysticks, SYS_Joysticks);
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return numJoysticks;
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}
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/* Function to get the device-dependent name of a joystick */
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const char *SDL_SYS_JoystickName(int index)
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{
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static char name[64];
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int len;
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/* convert pascal string to c-string */
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len = SYS_DevDef[index].deviceName[0];
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if ( len >= sizeof(name) ) {
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len = (sizeof(name) - 1);
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}
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memcpy(name, &SYS_DevDef[index].deviceName[1], len);
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name[len] = '\0';
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return name;
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}
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/* Function to open a joystick for use.
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The joystick to open is specified by the index field of the joystick.
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This should fill the nbuttons and naxes fields of the joystick structure.
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It returns 0, or -1 if there is an error.
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*/
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int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)
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{
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int index;
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UInt32 count, gotCount, count2;
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long numAxis, numButtons, numHats, numBalls;
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count = kMaxReferences;
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count2 = 0;
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numAxis = numButtons = numHats = numBalls = 0;
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index = joystick->index;
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/* allocate memory for system specific hardware data */
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joystick->hwdata = (struct joystick_hwdata *) malloc(sizeof(*joystick->hwdata));
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if (joystick->hwdata == NULL)
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{
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SDL_OutOfMemory();
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return(-1);
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}
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memset(joystick->hwdata, 0, sizeof(*joystick->hwdata));
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strcpy(joystick->hwdata->name, SDL_SYS_JoystickName(index));
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joystick->name = joystick->hwdata->name;
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ISpElementList_ExtractByKind(
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SYS_Elements[index],
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kISpElementKind_Axis,
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count,
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&gotCount,
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joystick->hwdata->refs);
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numAxis = gotCount;
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count -= gotCount;
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count2 += gotCount;
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ISpElementList_ExtractByKind(
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SYS_Elements[index],
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kISpElementKind_DPad,
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count,
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&gotCount,
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&(joystick->hwdata->refs[count2]));
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numHats = gotCount;
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count -= gotCount;
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count2 += gotCount;
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ISpElementList_ExtractByKind(
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SYS_Elements[index],
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kISpElementKind_Button,
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count,
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&gotCount,
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&(joystick->hwdata->refs[count2]));
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numButtons = gotCount;
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count -= gotCount;
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count2 += gotCount;
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joystick->naxes = numAxis;
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joystick->nhats = numHats;
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joystick->nballs = numBalls;
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joystick->nbuttons = numButtons;
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ISpDevices_Activate(
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1,
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&SYS_Joysticks[index]);
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return 0;
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}
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/* Function to update the state of a joystick - called as a device poll.
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* This function shouldn't update the joystick structure directly,
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* but instead should call SDL_PrivateJoystick*() to deliver events
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* and update joystick device state.
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*/
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void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)
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{
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int i, j;
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ISpAxisData a;
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ISpDPadData b;
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//ISpDeltaData c;
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ISpButtonData d;
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for(i = 0, j = 0; i < joystick->naxes; i++, j++)
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{
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Sint16 value;
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ISpElement_GetSimpleState(
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joystick->hwdata->refs[j],
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&a);
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value = (ISpSymmetricAxisToFloat(a)* 32767.0);
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if ( value != joystick->axes[i] ) {
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SDL_PrivateJoystickAxis(joystick, i, value);
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}
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}
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for(i = 0; i < joystick->nhats; i++, j++)
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{
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Uint8 pos;
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ISpElement_GetSimpleState(
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joystick->hwdata->refs[j],
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&b);
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switch(b) {
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case kISpPadIdle:
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pos = SDL_HAT_CENTERED;
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break;
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case kISpPadLeft:
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pos = SDL_HAT_LEFT;
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break;
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case kISpPadUpLeft:
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pos = SDL_HAT_LEFTUP;
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break;
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case kISpPadUp:
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pos = SDL_HAT_UP;
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break;
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case kISpPadUpRight:
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pos = SDL_HAT_RIGHTUP;
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break;
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case kISpPadRight:
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pos = SDL_HAT_RIGHT;
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break;
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case kISpPadDownRight:
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pos = SDL_HAT_RIGHTDOWN;
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break;
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case kISpPadDown:
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pos = SDL_HAT_DOWN;
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break;
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case kISpPadDownLeft:
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pos = SDL_HAT_LEFTDOWN;
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break;
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}
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if ( pos != joystick->hats[i] ) {
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SDL_PrivateJoystickHat(joystick, i, pos);
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}
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}
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for(i = 0; i < joystick->nballs; i++, j++)
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{
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/* ignore balls right now */
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}
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for(i = 0; i < joystick->nbuttons; i++, j++)
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{
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ISpElement_GetSimpleState(
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joystick->hwdata->refs[j],
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&d);
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if ( d != joystick->buttons[i] ) {
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SDL_PrivateJoystickButton(joystick, i, d);
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}
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}
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}
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/* Function to close a joystick after use */
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void SDL_SYS_JoystickClose(SDL_Joystick *joystick)
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{
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int index;
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index = joystick->index;
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ISpDevices_Deactivate(
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1,
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&SYS_Joysticks[index]);
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}
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/* Function to perform any system-specific joystick related cleanup */
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void SDL_SYS_JoystickQuit(void)
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{
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ISpShutdown();
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}
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