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view src/events/SDL_sysevents.h @ 3880:74e828c64315 SDL-1.2

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Fixed bug #292 I might be on crack here. It looks like SDL_ConvertMono() in src/audio/SDL_audiocvt.c adds the left and right channels of a stereo stream together, and clamps the new mono channel if it would overflow. Shouldn't it be dividing by 2 to average the two sample points instead of clamping? Otherwise the mono sample point's volume doubles in the conversion. This would also make the conversion faster, as it replaces two branches per sample frame with a bitwise shift. --ryan.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Sep 2006 15:45:37 +0000
parents d910939febfa
children 782fd950bd46 a1b03ba2fcd0
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 Sam Lantinga

    This library is SDL_free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#include "../video/SDL_sysvideo.h"

/* Useful functions and variables from SDL_sysevents.c */

#ifdef __BEOS__		/* The Be event loop runs in a separate thread */
#define MUST_THREAD_EVENTS
#endif

#ifdef __WIN32__	/* Win32 doesn't allow a separate event thread */
#define CANT_THREAD_EVENTS
#endif

#ifdef IPOD			/* iPod doesn't support threading at all */
#define CANT_THREAD_EVENTS
#endif

#ifdef __MACOS__	/* MacOS 7/8 don't support preemptive multi-tasking */
#define CANT_THREAD_EVENTS
#endif

#ifdef __OS2__		/* The OS/2 event loop runs in a separate thread */
#define MUST_THREAD_EVENTS
#endif