Mercurial > sdl-ios-xcode

view include/SDL_platform.h @ 2042:3908e1f808e1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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 15:56:36 +0000
parents 54f63955dc1f
children c9aa6bcb26f3
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 Sam Lantinga

    This library is 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
*/

/* Try to get a standard set of platform defines */

#ifndef _SDL_platform_h
#define _SDL_platform_h

#if defined(_AIX)
#undef __AIX__
#define __AIX__		1
#endif
#if defined(AMIGA) || defined(__AMIGA) || defined(__amigados__)
#undef __AMIGA__
#define __AMIGA__	1
#endif
#if defined(__BEOS__)
#undef __BEOS__
#define __BEOS__	1
#endif
#if defined(bsdi) || defined(__bsdi) || defined(__bsdi__)
#undef __BSDI__
#define __BSDI__	1
#endif
#if defined(_arch_dreamcast)
#undef __DREAMCAST__
#define __DREAMCAST__	1
#endif
#if defined(__FreeBSD__) || defined(__DragonFly__)
#undef __FREEBSD__
#define __FREEBSD__	1
#endif
#if defined(hpux) || defined(__hpux) || defined(__hpux__)
#undef __HPUX__
#define __HPUX__	1
#endif
#if defined(sgi) || defined(__sgi) || defined(__sgi__) || defined(_SGI_SOURCE)
#undef __IRIX__
#define __IRIX__	1
#endif
#if defined(linux) || defined(__linux) || defined(__linux__)
#undef __LINUX__
#define __LINUX__	1
#endif
#if defined(__APPLE__)
#undef __MACOSX__
#define __MACOSX__	1
#elif defined(macintosh)
#undef __MACOS__
#define __MACOS__	1
#endif
#if defined(__NetBSD__)
#undef __NETBSD__
#define __NETBSD__	1
#endif
#if defined(__OpenBSD__)
#undef __OPENBSD__
#define __OPENBSD__	1
#endif
#if defined(__OS2__)
#undef __OS2__
#define __OS2__		1
#endif
#if defined(osf) || defined(__osf) || defined(__osf__) || defined(_OSF_SOURCE)
#undef __OSF__
#define __OSF__		1
#endif
#if defined(__QNXNTO__)
#undef __QNXNTO__
#define __QNXNTO__	1
#endif
#if defined(riscos) || defined(__riscos) || defined(__riscos__)
#undef __RISCOS__
#define __RISCOS__	1
#endif
#if defined(__SVR4)
#undef __SOLARIS__
#define __SOLARIS__	1
#endif
#if defined(WIN32) || defined(_WIN32)
#undef __WIN32__
#define __WIN32__	1
#endif

#endif /* _SDL_platform_h */