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Date: Sun, 1 Jun 2003 15:38:45 -0700 (PDT)
From: Jeff Brown <jabrown@caida.org>
Subject: [patch] SDL-1.2.5 + FreeBSD joystick axes, hat fixes
Hello again! When I sent in some SDL fixes last December, I found out
they'd already been fixed in the CVS version. This time, I checked the
repository before bugging you. =)
I'm using SDL-1.2.5 on a FreeBSD 4.6.2-RELEASE system, and in the course
of getting my multi-analog-axis USB controller (with a hat switch!)
working with d2x-sdl -- the SDL port of the Descent 2 engine -- I came
across a few problems:
1) The second analog stick is reported as a slider in one direction, and
"Rz" in the other. SDL was ignoring the Rz axis, so I added Rx/Ry/Rz to
the set of things SDL considers to be axes.
2) After the above change, the set of JOYAXE_* axes for my gamepad was
{0,1,3,7}; however, d2x-sdl expects the axes to be contiguously numbered
from 0, which seems like a pretty reasonable expectation, rather than
having to scan the entire space of axes that SDL may or may not have.
So, I added a table lookup which maps the JOYAXE_* axis numbers to 0,1,...
in the order they're detected by SDL_SYS_JoystickOpen(), when reporting
them to the application. I also added a function "usage_to_joyaxe()"
which maps the USB HUG_* usage values to JOYAXE_values, since the repeated
case statements testing for HUG_* were getting out of hand.
3) The BSD joystick driver had no hat support, so I added it. It looks
like our USB library can only support one hat switch per device, which
makes life easy.
The patch against SDL-1.2.5 which implements these changes is at:
http://www.caida.org/~jabrown/patches/sdl-1.2.5-bsdhat.diff
After applying, SDL's "testjoystick" reports all activity from my gamepad
correctly, and d2x works too (though it needed some other fixes).
Moving on...
There is also a problem with slightly different USBHID library interfaces
on different versions of FreeBSD. I wasn't going to mention this since the
FreeBSD port for SDL-1.2.5 (and not SDL itself) was doing the FreeBSD
version-specific patching, so I e-mailed the port maintainer with this
change. However, I see that you've incorporated the FreeBSD
version-checking stuff into the CVS version of SDL, so now it's relevant
for you too.
The problem is, the FreeBSD #if tests don't work right for FreeBSD
4.6.2-RELEASE. There may be other versions with this problem, but I've
only tested 4.6.2-R. The following patch against your latest CVS version
fixes this:
--- SDL_sysjoystick.c-1.16 Tue Apr 15 09:02:08 2003
+++ SDL_sysjoystick.c Sun Jun 1 15:10:28 2003
@@ -420,6 +420,8 @@
# else
len = hid_report_size(rd, repinfo[repind].kind, r->rid);
# endif
+# elif (__FreeBSD_version == 460002)
+ len = hid_report_size(rd, r->rid, repinfo[repind].kind);
# else
len = hid_report_size(rd, repinfo[repind].kind, &r->rid);
#endif
I hope this is all useful to you. I've been getting myself dizzy playing
Descent 2 with it, all morning!
-Jeff Brown
P.S. My USB controller is a Thrustmaster Firestorm Dual Analog 2. That's
probably irrelevant, but I threw it in for completeness.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 02 Jun 2003 14:50:22 +0000 |
| parents | 0ce5a68278fd |
| children | 594422ab8f9f |
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============================================================================== Using the Simple DirectMedia Layer on Atari ============================================================================== ============================================================================== I. Building the Simple DirectMedia Layer libraries: (This step isn't necessary if you have the SDL binary distribution) Do the classic configure, with --disable-shared --enable-static and: Tos version (should run everywhere): --disable-threads Tos does not support threads. MiNT version (maybe Magic, only for multitasking OS): --disable-pthreads --enable-pth Mint and Magic may supports threads, so audio can be used with current devices, like Sun audio, or disk-writing support. Like Tos, interrupt audio without threads is more suited for Atari machines. Then you can make ; make install it. ============================================================================== II. Building the Simple DirectMedia Layer test programs: Do the classic configure, then make. Run them ! ============================================================================== III. Enjoy! :) If you have a project you'd like me to know about, or want to ask questions, go ahead and join the SDL developer's mailing list by sending e-mail to: sdl-request@libsdl.org and put "subscribe" into the subject of the message. Or alternatively you can use the web interface: http://www.libsdl.org/mailman/listinfo/sdl ============================================================================== IV. What is supported: Keyboard (GEMDOS, BIOS, GEM, Ikbd) Mouse (XBIOS, GEM, Ikbd) Video (XBIOS (Fullscreen), GEM (Windowed and Fullscreen)) Timer (VBL vector, GNU pth library) Joystick and joypad support (Ikbd, Hardware) Audio support (Hardware, XBIOS, GSXB, /dev/audio if threads enabled) Threads support (Multitasking OS only via GNU pth library) - What is missing: CDROM support (Metados, /dev/cdrom) - Driver combinations: Video Kbd Mouse Timer Jstick Joypads xbios ikbd ikbd vbl(2) ikbd hardware xbios gemdos xbios vbl(2) xbios hardware xbios bios xbios vbl(2) xbios hardware gem gem gem(1) vbl(2) xbios hardware (1) GEM does not report relative mouse motion, so xbios mouse driver is used to report this type event. (2) If you build SDL with threads using the GNU pth library, timers are supported via the pth library. ============================================================================== V. Environment variables: SDL_VIDEODRIVER: Set to 'xbios' to force xbios video driver Set to 'gem' to force gem video driver SDL_AUDIODRIVER: Set to 'mint' to force Atari audio driver Set to 'audio' to force Sun /dev/audio audio driver Set to 'disk' to force disk-writing audio driver SDL_ATARI_EVENTSDRIVER Set to 'ikbd' to force IKBD 6301 keyboard driver Set to 'gemdos' to force gemdos keyboard driver Set to 'bios' to force bios keyboard driver SDL_JOYSTICK_ATARI: Use any of these strings in the environment variable to enable or disable a joystick: 'ikbd-joy1-[on|off]' for IKBD joystick on port 1 (hardware access) 'xbios-joy1-[on|off]' for IKBD joystick on port 1 (xbios access) 'porta-pad-[on|off]' for joypad on port A 'porta-joy0-[on|off]' for joystick 0 on port A 'porta-joy1-[on|off]' for joystick 1 on port A 'porta-lp-[on|off]' for lightpen on port A 'porta-anpad-[on|off]' for analog paddle on port A 'portb-pad-[on|off]' for joypad on port B 'portb-joy0-[on|off]' for joystick 0 on port B 'portb-joy1-[on|off]' for joystick 1 on port B 'portb-anpad-[on|off]' for analog paddle on port B Default configuration is: 'ikbd-joy1-on' (if IKBD events driver enabled) 'xbios-joy1-on' (if gemdos/bios/gem events driver enabled) 'porta-pad-on portb-pad-on' (if available on the machine) port[a|b]-[pad|joy?|lp|anpad]-* strings are mutually exclusives. On such a port, you can only use a joypad OR 1 or 2 joysticks OR a lightpen OR an analog paddle. You must disable joypad before setting another controller. The second joystick port on IKBD is used by the mouse, so not usable. Joypads are multibuttons controller (Atari Jaguar console-like). Joysticks are 1 button, 2 axis controllers. Lightpen and analog paddle are 2 buttons, 2 axis controllers. The 2 buttons are those affected to 1 button joysticks on the same port. ============================================================================== VI. More informations about drivers: Xbios video: Video chip is detected using the _VDO cookie. Screen enhancers are not supported, but could be if you know how to use them. ST, STE, Mega ST, Mega STE: 320x200x4 bits, shades of grey, available only for the purpose of testing SDL. TT: 320x480x8 and 320x240x8 (software double-lined mode). Falcon: All modes supported by the current monitor (RVB or VGA). Clones and any machine with monochrome monitor: Not supported. Gem video: Automatically used if xbios not available. All machines: Only the current resolution, if 8 bits or higher depth. IKBD keyboard, mouse and joystick driver: Available if _MCH cookie is ST, Mega ST, STE, Mega STE, TT or Falcon. Hades has an IKBD, but xbios is not available for video, so IKBD driver is disabled. Gemdos and bios keyboard driver: Available on all machines. Mouse and joystick xbios driver: Available on all machines (I think). Joypad driver: Available if _MCH cookie is STE or Falcon. PTH timer driver: Available with multitasking OS. VBL timer driver: Available on all machines (I think). Audio driver: Cookie _SND is used to detect supported audio capabilities STE, Mega STE, TT: 8 bits DMA (hardware access) Falcon, machines with GSXB driver: Xbios functions Other machines: Not supported -- Patrice Mandin <pmandin@caramail.com> http://membres.lycos.fr/pmandin/