Mercurial > sdl-ios-xcode
view src/video/ataricommon/SDL_ikbdinterrupt_s.h @ 3880:74e828c64315 SDL-1.2
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 | a11c13151840 |
children | 782fd950bd46 c121d94672cb a1b03ba2fcd0 |
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/* 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 */ #include "SDL_config.h" /* * Mouse vector * * Patrice Mandin */ #ifndef _SDL_IKBDINTERRUPT_S_H_ #define _SDL_IKBDINTERRUPT_S_H_ #include <mint/osbind.h> #include "SDL_stdinc.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 volatile Uint8 SDL_AtariIkbd_keyboard[128]; /* Keyboard table */ extern volatile Uint16 SDL_AtariIkbd_mouseb; /* Mouse on port 0, buttons */ extern volatile Sint16 SDL_AtariIkbd_mousex; /* Mouse X relative motion */ extern volatile Sint16 SDL_AtariIkbd_mousey; /* Mouse Y relative motion */ extern volatile Uint16 SDL_AtariIkbd_joystick; /* Joystick on port 1 */ /* For joystick driver to know if this is usable */ extern Uint16 SDL_AtariIkbd_enabled; /* Functions */ extern void SDL_AtariIkbdInstall(void); extern void SDL_AtariIkbdUninstall(void); #endif /* _SDL_IKBDINTERRUPT_S_H_ */