Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT) From: David MacCormack Subject: [SDL] Linux joystick patch I recently got myself a PS2 -> USB converter (a super joybox 5). It accepts 4 PSX/PS2 controllers. It's implemented as a HID, which is nice because it doesn't require its own driver, but the problem is that it's implemented as a *single* HID -- that is, it shows up as a single joystick with 19 axes, 4 hats, and 48 buttons. This poses a problem for a number of apps which use SDL (stella, fce ultra, zsnes, to name a few) and see only a single (physical) joystick even though there are really 4 (logical) joysticks. There are a number of these types of devices on the market, and I've seen others post messages (in the zsnes forum, for example) with the same problem, so I came up with what I think is a pretty generic solution. I patched src/joystick/linux/SDL_sysjoystic.c to include support for logical joysticks; basically, it's a static array and supporting functions that map a single physical joystick to multiple logical joysticks. The attached patch has the new code. It's wrapped inside #ifndef statements so that you can get the old behavior if you want.

## Makefile.am for the SDL cdrom library

noinst_LTLIBRARIES = libcdrom.la

# Define which subdirectories need to be built
SUBDIRS = @CDROM_SUBDIRS@
DIST_SUBDIRS =	\
	aix	\
	beos	\
	bsdi	\
	dc	\
	dummy	\
	freebsd	\
	linux	\
	macos	\
	macosx	\
	mint	\
	openbsd	\
	osf	\
	qnx	\
	win32

DRIVERS = @CDROM_DRIVERS@

# Include the architecture-independent sources
COMMON_SRCS =			\
	SDL_cdrom.c		\
	SDL_syscdrom.h

libcdrom_la_SOURCES = $(COMMON_SRCS)
libcdrom_la_LIBADD = $(DRIVERS)
libcdrom_la_DEPENDENCIES = $(DRIVERS)