Mercurial > sdl-ios-xcode
view src/joystick/beos/SDL_bejoystick.cc @ 1302:94643e9bad18
Date: Sat, 14 Jan 2006 15:16:01 -0500
From: Andrew Fuller
Subject: [SDL] [PATCH] ML-8866 PS2->USB converter
This converter seems to go by several names -- Super Dual Box, Dual
USB Joypad, and who knows what else. Also branded differently with
different colour cases, etc. But it seems to all be the same
internals. It is a common converter used for StepMania, with several
posts Googleable trying to make it work in Linux. I got mine
yesterday and wanted to play stepmania, so I went ahead and made a
crude patch for libsdl to split this baby into two logical joysticks.
A couple notes about the patch:
This patch works well for two dance mats hooked up and playing
stepmania, however the mapping of the other buttons may be off. I
have no joystick which uses all the buttons the converter reports, so
I have no way of testing them.
The name I used 0925:8866 which is the USB ID, and what SDLjoytest-GL
reported is the name, even though lsusb shows Wisegroup, Ltd MP-8866
Dual USB Joypad, and the existing virtual joystick mapping uses the
Wisegroup... name. Not sure why the discrepency.
I'm not subscribed to this mailing list, so please CC me on any
comments to this.
-Andrew
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 31 Jan 2006 14:59:43 +0000 |
parents | b8d311d90021 |
children | c9b51268668f |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* This is the system specific header for the SDL joystick API */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <be/support/String.h> #include <be/device/Joystick.h> extern "C" { #include "SDL_error.h" #include "SDL_joystick.h" #include "SDL_sysjoystick.h" #include "SDL_joystick_c.h" /* The maximum number of joysticks we'll detect */ #define MAX_JOYSTICKS 16 /* A list of available joysticks */ static char *SDL_joyport[MAX_JOYSTICKS]; static char *SDL_joyname[MAX_JOYSTICKS]; /* The private structure used to keep track of a joystick */ struct joystick_hwdata { BJoystick *stick; uint8 *new_hats; int16 *new_axes; }; /* Function to scan the system for joysticks. * This function should set SDL_numjoysticks to the number of available * joysticks. Joystick 0 should be the system default joystick. * It should return 0, or -1 on an unrecoverable fatal error. */ int SDL_SYS_JoystickInit(void) { BJoystick joystick; int numjoysticks; int i; int32 nports; char name[B_OS_NAME_LENGTH]; /* Search for attached joysticks */ nports = joystick.CountDevices(); numjoysticks = 0; memset(SDL_joyport, 0, (sizeof SDL_joyport)); memset(SDL_joyname, 0, (sizeof SDL_joyname)); for ( i=0; (SDL_numjoysticks < MAX_JOYSTICKS) && (i < nports); ++i ) { if ( joystick.GetDeviceName(i, name) == B_OK ) { if ( joystick.Open(name) != B_ERROR ) { BString stick_name; joystick.GetControllerName(&stick_name); SDL_joyport[numjoysticks] = strdup(name); SDL_joyname[numjoysticks] = strdup(stick_name.String()); numjoysticks++; joystick.Close(); } } } return(numjoysticks); } /* Function to get the device-dependent name of a joystick */ const char *SDL_SYS_JoystickName(int index) { return SDL_joyname[index]; } /* Function to open a joystick for use. The joystick to open is specified by the index field of the joystick. This should fill the nbuttons and naxes fields of the joystick structure. It returns 0, or -1 if there is an error. */ int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) { BJoystick *stick; /* Create the joystick data structure */ joystick->hwdata = (struct joystick_hwdata *) malloc(sizeof(*joystick->hwdata)); if ( joystick->hwdata == NULL ) { SDL_OutOfMemory(); return(-1); } memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); stick = new BJoystick; joystick->hwdata->stick = stick; /* Open the requested joystick for use */ if ( stick->Open(SDL_joyport[joystick->index]) == B_ERROR ) { SDL_SetError("Unable to open joystick"); SDL_SYS_JoystickClose(joystick); return(-1); } /* Set the joystick to calibrated mode */ stick->EnableCalibration(); /* Get the number of buttons, hats, and axes on the joystick */ joystick->nbuttons = stick->CountButtons(); joystick->naxes = stick->CountAxes(); joystick->nhats = stick->CountHats(); joystick->hwdata->new_axes = (int16 *) malloc(joystick->naxes*sizeof(int16)); joystick->hwdata->new_hats = (uint8 *) malloc(joystick->nhats*sizeof(uint8)); if ( ! joystick->hwdata->new_hats || ! joystick->hwdata->new_axes ) { SDL_OutOfMemory(); SDL_SYS_JoystickClose(joystick); return(-1); } /* We're done! */ return(0); } /* Function to update the state of a joystick - called as a device poll. * This function shouldn't update the joystick structure directly, * but instead should call SDL_PrivateJoystick*() to deliver events * and update joystick device state. */ void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) { static const Uint8 hat_map[9] = { SDL_HAT_CENTERED, SDL_HAT_UP, SDL_HAT_RIGHTUP, SDL_HAT_RIGHT, SDL_HAT_RIGHTDOWN, SDL_HAT_DOWN, SDL_HAT_LEFTDOWN, SDL_HAT_LEFT, SDL_HAT_LEFTUP }; const int JITTER = (32768/10); /* 10% jitter threshold (ok?) */ BJoystick *stick; int i, change; int16 *axes; uint8 *hats; uint32 buttons; /* Set up data pointers */ stick = joystick->hwdata->stick; axes = joystick->hwdata->new_axes; hats = joystick->hwdata->new_hats; /* Get the new joystick state */ stick->Update(); stick->GetAxisValues(axes); stick->GetHatValues(hats); buttons = stick->ButtonValues(); /* Generate axis motion events */ for ( i=0; i<joystick->naxes; ++i ) { change = ((int32)axes[i] - joystick->axes[i]); if ( (change > JITTER) || (change < -JITTER) ) { SDL_PrivateJoystickAxis(joystick, i, axes[i]); } } /* Generate hat change events */ for ( i=0; i<joystick->nhats; ++i ) { if ( hats[i] != joystick->hats[i] ) { SDL_PrivateJoystickHat(joystick, i, hat_map[hats[i]]); } } /* Generate button events */ for ( i=0; i<joystick->nbuttons; ++i ) { if ( (buttons&0x01) != joystick->buttons[i] ) { SDL_PrivateJoystickButton(joystick, i, (buttons&0x01)); } buttons >>= 1; } } /* Function to close a joystick after use */ void SDL_SYS_JoystickClose(SDL_Joystick *joystick) { if ( joystick->hwdata ) { joystick->hwdata->stick->Close(); delete joystick->hwdata->stick; if ( joystick->hwdata->new_hats ) { free(joystick->hwdata->new_hats); } if ( joystick->hwdata->new_axes ) { free(joystick->hwdata->new_axes); } free(joystick->hwdata); joystick->hwdata = NULL; } } /* Function to perform any system-specific joystick related cleanup */ void SDL_SYS_JoystickQuit(void) { int i; for ( i=0; SDL_joyport[i]; ++i ) { free(SDL_joyport[i]); } SDL_joyport[0] = NULL; for ( i=0; SDL_joyname[i]; ++i ) { free(SDL_joyname[i]); } SDL_joyname[0] = NULL; } }; // extern "C"