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view src/video/ataricommon/SDL_ikbdinterrupt_s.h @ 968:4675910b0b7b

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Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) From: Hannu Savolainen Subject: Re: SDL uses obsolete OSS features I did some work on getting OSS to work better with SDL. There have been some problems with select which should be fixed now. I'm having some problems in understanding what is the purpose of the DSP_WaitAudio() routine. I added a return to the very beginning of this routine and commendted out the define for USE_BLOCKING_WRITES. At least lbreakout2 seems to work as well as earlier. The latencies are the same. An ordinary blocking write does exactly the same thing than DSP_WaitAudio does. So I would recommend using the USE_BLOCKING_WRITES approach and removing everything from the DSP_WaitAudio routine. Also enabling USE_BLOCKING_WRITES makes it possible to simplify DSP_PlayAudio() because you don't need to handle the partial writes (the do-while loop). Attached is a patch against SDL-1.2.7. After these changes SDL will use OSS as it's designed to be used (make it as simple as possible). This code should work with all OSS implementations because it uses only the very fundamental features that have been there since the jurassic times.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 12 Nov 2004 21:39:04 +0000
parents b8d311d90021
children c9b51268668f
line wrap: on
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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

/*
 *	Mouse vector
 *
 *	Patrice Mandin
 */

#ifndef _SDL_IKBDINTERRUPT_S_H_
#define _SDL_IKBDINTERRUPT_S_H_

#include <mint/osbind.h>

#include "SDL_types.h"

/* Const */

#define IKBD_JOY_UP		(1<<0)
#define IKBD_JOY_DOWN	(1<<1)
#define IKBD_JOY_LEFT	(1<<2)
#define IKBD_JOY_RIGHT	(1<<3)
#define IKBD_JOY_FIRE	(1<<7)

/* Variables */

extern Uint8  SDL_AtariIkbd_keyboard[128];	/* Keyboard table */
extern Uint16 SDL_AtariIkbd_mouseb;	/* Mouse on port 0, buttons */
extern Sint16 SDL_AtariIkbd_mousex;	/* Mouse X relative motion */
extern Sint16 SDL_AtariIkbd_mousey;	/* Mouse Y relative motion */
extern Uint16 SDL_AtariIkbd_joystick;	/* Joystick on port 1 */

extern Uint16 SDL_AtariIkbd_enabled;	/* For joystick driver to know
											if this is usable */
										
/* Functions */ 

extern void SDL_AtariIkbdInstall(void);
extern void SDL_AtariIkbdUninstall(void);

#endif /* _SDL_IKBDINTERRUPT_S_H_ */