105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
/*
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Copyright (C) 1996-2001 Id Software, Inc.
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Copyright (C) 2002-2009 John Fitzgibbons and others
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// snd_mem.c: sound caching
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#include "quakedef.h"
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#include "snd_codec.h"
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static void *resampler = NULL;
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/*
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==============
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S_LoadSound
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==============
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*/
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sfxcache_t *S_LoadSound (sfx_t *s)
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{
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snd_info_t info;
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char namebuffer[256];
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byte *data;
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int len;
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sfxcache_t *sc;
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// see if still in memory
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sc = (sfxcache_t *) Cache_Check (&s->cache);
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if (sc)
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return sc;
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//Con_Printf ("S_LoadSound: %x\n", (int)stackbuf);
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// load it in
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Q_strcpy(namebuffer, "sound/");
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Q_strcat(namebuffer, s->name);
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// Con_Printf ("loading %s\n",namebuffer);
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// load it in
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data = S_CodecLoad(namebuffer, &info);
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if (!data)
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{
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Con_Printf ("Couldn't load %s\n", namebuffer);
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return NULL;
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}
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if (info.channels != 1)
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{
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Con_Printf ("%s is a stereo sample\n",s->name);
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return NULL;
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}
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// set up the resampler
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if (resampler == NULL)
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{
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resampler = Snd_ResamplerInit();
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}
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else
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{
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Snd_ResamplerReset(resampler);
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}
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int resampledNumSamples;
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void *resampled = Snd_Resample(resampler,
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info.rate, info.width, info.samples, info.channels, data,
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shm->speed, shm->samplebits/8, &resampledNumSamples);
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len = resampledNumSamples * (shm->samplebits/8) * info.channels;
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// set up the sample struct
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sc = (sfxcache_t *) Cache_Alloc ( &s->cache, len + sizeof(sfxcache_t), s->name);
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if (!sc)
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return NULL;
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float ratio = (float)info.rate / (float)shm->speed;
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sc->length = resampledNumSamples;
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sc->loopstart = (info.loopstart == -1 ? -1 : info.loopstart / ratio); // reposition loop marker to take resampling into account
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sc->speed = shm->speed;
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sc->width = (shm->samplebits/8);
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sc->stereo = info.channels;
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memcpy(sc->data, resampled, len);
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free(resampled);
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Z_Free(data);
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return sc;
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}
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