Mercurial > SDL_sound_CoreAudio
view decoders/timidity/output.c @ 200:f75ed2d72238
Rewrite to call an included, patched version of Timidity routines directly.
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Fri, 04 Jan 2002 06:50:37 +0000 |
parents | 2d887640d300 |
children |
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/* TiMidity -- Experimental MIDI to WAVE converter Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. output.c Audio output (to file / device) functions. */ #if HAVE_CONFIG_H # include <config.h> #endif #include "SDL_sound.h" #define __SDL_SOUND_INTERNAL__ #include "SDL_sound_internal.h" #include "options.h" #include "output.h" /*****************************************************************/ /* Some functions to convert signed 32-bit data to other formats */ void s32tos8(void *dp, Sint32 *lp, Sint32 c) { Sint8 *cp=(Sint8 *)(dp); Sint32 l; while (c--) { l=(*lp++)>>(32-8-GUARD_BITS); if (l>127) l=127; else if (l<-128) l=-128; *cp++ = (Sint8) (l); } } void s32tou8(void *dp, Sint32 *lp, Sint32 c) { Uint8 *cp=(Uint8 *)(dp); Sint32 l; while (c--) { l=(*lp++)>>(32-8-GUARD_BITS); if (l>127) l=127; else if (l<-128) l=-128; *cp++ = 0x80 ^ ((Uint8) l); } } void s32tos16(void *dp, Sint32 *lp, Sint32 c) { Sint16 *sp=(Sint16 *)(dp); Sint32 l; while (c--) { l=(*lp++)>>(32-16-GUARD_BITS); if (l > 32767) l=32767; else if (l<-32768) l=-32768; *sp++ = (Sint16)(l); } } void s32tou16(void *dp, Sint32 *lp, Sint32 c) { Uint16 *sp=(Uint16 *)(dp); Sint32 l; while (c--) { l=(*lp++)>>(32-16-GUARD_BITS); if (l > 32767) l=32767; else if (l<-32768) l=-32768; *sp++ = 0x8000 ^ (Uint16)(l); } } void s32tos16x(void *dp, Sint32 *lp, Sint32 c) { Sint16 *sp=(Sint16 *)(dp); Sint32 l; while (c--) { l=(*lp++)>>(32-16-GUARD_BITS); if (l > 32767) l=32767; else if (l<-32768) l=-32768; *sp++ = SDL_Swap16((Sint16)(l)); } } void s32tou16x(void *dp, Sint32 *lp, Sint32 c) { Uint16 *sp=(Uint16 *)(dp); Sint32 l; while (c--) { l=(*lp++)>>(32-16-GUARD_BITS); if (l > 32767) l=32767; else if (l<-32768) l=-32768; *sp++ = SDL_Swap16(0x8000 ^ (Uint16)(l)); } }