Mercurial > sdl-ios-xcode
view src/timer/SDL_timer_c.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 | d910939febfa |
children | 782fd950bd46 c121d94672cb a1b03ba2fcd0 |
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 */ #include "SDL_config.h" /* Useful functions and variables from SDL_timer.c */ #include "SDL_timer.h" #define ROUND_RESOLUTION(X) \ (((X+TIMER_RESOLUTION-1)/TIMER_RESOLUTION)*TIMER_RESOLUTION) extern int SDL_timer_started; extern int SDL_timer_running; /* Data to handle a single periodic alarm */ extern Uint32 SDL_alarm_interval; extern SDL_TimerCallback SDL_alarm_callback; /* Set whether or not the timer should use a thread. This should be called while the timer subsystem is running. */ extern int SDL_SetTimerThreaded(int value); extern int SDL_TimerInit(void); extern void SDL_TimerQuit(void); /* This function is called from the SDL event thread if it is available */ extern void SDL_ThreadedTimerCheck(void);