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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.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 16 May 2004 18:46:24 +0000
parents 355632dca928
children
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<HTML
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>SDL_mutexV</H1
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>Name</H2
>SDL_mutexV&nbsp;--&nbsp;Unlock a mutex</DIV
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><PRE
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>#include "SDL.h"
#include "SDL_thread.h"</PRE
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>int <B
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>SDL_mutexV</B
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>(SDL_mutex *mutex);</CODE
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>Unlocks the <TT
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>mutex</I
></TT
>, which was previously created with <A
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><TT
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>SDL_CreateMutex</TT
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>. Returns <SPAN
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>0</SPAN
> on success, or <SPAN
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>-1</SPAN
> on an error.</P
><P
>SDL also defines a macro <TT
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>#define SDL_UnlockMutex(m) SDL_mutexV(m)</TT
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