631 lines
17 KiB
C
631 lines
17 KiB
C
/**
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* OpenAL cross platform audio library
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* Copyright (C) 1999-2007 by authors.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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* Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#include "config.h"
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#include <stdlib.h>
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#include "AL/al.h"
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#include "AL/alc.h"
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#include "alMain.h"
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#include "alEffect.h"
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#include "alThunk.h"
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#include "alError.h"
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static ALeffect *g_EffectList;
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static ALuint g_EffectCount;
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static void InitEffectParams(ALeffect *effect, ALenum type);
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AL_API ALvoid AL_APIENTRY alGenEffects(ALsizei n, ALuint *effects)
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{
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ALCcontext *Context;
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ALsizei i;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (n > 0)
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{
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// Check that enough memory has been allocted in the 'effects' array for n Effects
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if (!IsBadWritePtr((void*)effects, n * sizeof(ALuint)))
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{
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ALeffect **list = &g_EffectList;
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while(*list)
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list = &(*list)->next;
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i = 0;
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while(i < n)
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{
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*list = calloc(1, sizeof(ALeffect));
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if(!(*list))
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{
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// We must have run out or memory
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alDeleteEffects(i, effects);
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alSetError(AL_OUT_OF_MEMORY);
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break;
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}
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effects[i] = (ALuint)ALTHUNK_ADDENTRY(*list);
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(*list)->effect = effects[i];
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InitEffectParams(*list, AL_EFFECT_NULL);
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g_EffectCount++;
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i++;
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list = &(*list)->next;
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}
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}
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}
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alDeleteEffects(ALsizei n, ALuint *effects)
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{
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ALCcontext *Context;
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ALeffect *ALEffect;
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ALsizei i;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (n >= 0)
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{
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// Check that all effects are valid
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for (i = 0; i < n; i++)
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{
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if (!alIsEffect(effects[i]))
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{
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alSetError(AL_INVALID_NAME);
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break;
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}
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}
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if (i == n)
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{
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// All effects are valid
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for (i = 0; i < n; i++)
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{
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// Recheck that the effect is valid, because there could be duplicated names
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if (effects[i] && alIsEffect(effects[i]))
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{
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ALeffect **list;
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ALEffect = ((ALeffect*)ALTHUNK_LOOKUPENTRY(effects[i]));
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// Remove Source from list of Sources
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list = &g_EffectList;
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while(*list && *list != ALEffect)
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list = &(*list)->next;
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if(*list)
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*list = (*list)->next;
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ALTHUNK_REMOVEENTRY(ALEffect->effect);
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memset(ALEffect, 0, sizeof(ALeffect));
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free(ALEffect);
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g_EffectCount--;
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}
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}
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}
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}
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else
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alSetError(AL_INVALID_VALUE);
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ProcessContext(Context);
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}
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AL_API ALboolean AL_APIENTRY alIsEffect(ALuint effect)
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{
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ALCcontext *Context;
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ALeffect **list;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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list = &g_EffectList;
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while(*list && (*list)->effect != effect)
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list = &(*list)->next;
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ProcessContext(Context);
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return ((*list || !effect) ? AL_TRUE : AL_FALSE);
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}
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AL_API ALvoid AL_APIENTRY alEffecti(ALuint effect, ALenum param, ALint iValue)
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{
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ALCcontext *Context;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (effect && alIsEffect(effect))
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{
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ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
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if(param == AL_EFFECT_TYPE)
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{
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if(iValue == AL_EFFECT_NULL ||
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iValue == AL_EFFECT_REVERB)
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InitEffectParams(ALEffect, iValue);
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else
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alSetError(AL_INVALID_VALUE);
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}
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else if(ALEffect->type == AL_EFFECT_REVERB)
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{
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switch(param)
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{
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case AL_REVERB_DECAY_HFLIMIT:
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if(iValue == AL_TRUE || iValue == AL_FALSE)
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ALEffect->Reverb.DecayHFLimit = iValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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default:
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alSetError(AL_INVALID_ENUM);
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break;
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}
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}
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else
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alSetError(AL_INVALID_ENUM);
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}
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else
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alSetError(AL_INVALID_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alEffectiv(ALuint effect, ALenum param, ALint *piValues)
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{
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ALCcontext *Context;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (effect && alIsEffect(effect))
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{
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ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
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if(param == AL_EFFECT_TYPE)
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{
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alEffecti(effect, param, piValues[0]);
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}
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else if(ALEffect->type == AL_EFFECT_REVERB)
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{
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switch(param)
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{
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case AL_REVERB_DECAY_HFLIMIT:
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alEffecti(effect, param, piValues[0]);
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break;
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default:
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alSetError(AL_INVALID_ENUM);
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break;
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}
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}
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else
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alSetError(AL_INVALID_ENUM);
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}
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else
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alSetError(AL_INVALID_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alEffectf(ALuint effect, ALenum param, ALfloat flValue)
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{
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ALCcontext *Context;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (effect && alIsEffect(effect))
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{
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ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
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if(ALEffect->type == AL_EFFECT_REVERB)
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{
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switch(param)
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{
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case AL_REVERB_DENSITY:
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if(flValue >= 0.0f && flValue <= 1.0f)
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ALEffect->Reverb.Density = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_REVERB_DIFFUSION:
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if(flValue >= 0.0f && flValue <= 1.0f)
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ALEffect->Reverb.Diffusion = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_REVERB_GAIN:
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if(flValue >= 0.0f && flValue <= 1.0f)
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ALEffect->Reverb.Gain = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_REVERB_GAINHF:
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if(flValue >= 0.0f && flValue <= 1.0f)
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ALEffect->Reverb.GainHF = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_REVERB_DECAY_TIME:
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if(flValue >= 0.1f && flValue <= 20.0f)
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ALEffect->Reverb.DecayTime = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_REVERB_DECAY_HFRATIO:
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if(flValue >= 0.1f && flValue <= 2.0f)
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ALEffect->Reverb.DecayHFRatio = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_REVERB_REFLECTIONS_GAIN:
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if(flValue >= 0.0f && flValue <= 3.16f)
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ALEffect->Reverb.ReflectionsGain = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_REVERB_REFLECTIONS_DELAY:
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if(flValue >= 0.0f && flValue <= 0.3f)
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ALEffect->Reverb.ReflectionsDelay = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_REVERB_LATE_REVERB_GAIN:
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if(flValue >= 0.0f && flValue <= 10.0f)
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ALEffect->Reverb.LateReverbGain = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_REVERB_LATE_REVERB_DELAY:
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if(flValue >= 0.0f && flValue <= 0.1f)
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ALEffect->Reverb.LateReverbDelay = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_REVERB_AIR_ABSORPTION_GAINHF:
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if(flValue >= 0.892f && flValue <= 1.0f)
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ALEffect->Reverb.AirAbsorptionGainHF = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_REVERB_ROOM_ROLLOFF_FACTOR:
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if(flValue >= 0.0f && flValue <= 10.0f)
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ALEffect->Reverb.RoomRolloffFactor = flValue;
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else
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alSetError(AL_INVALID_VALUE);
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break;
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default:
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alSetError(AL_INVALID_ENUM);
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break;
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}
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}
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else
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alSetError(AL_INVALID_ENUM);
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}
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else
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alSetError(AL_INVALID_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alEffectfv(ALuint effect, ALenum param, ALfloat *pflValues)
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{
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ALCcontext *Context;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (effect && alIsEffect(effect))
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{
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ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
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if(ALEffect->type == AL_EFFECT_REVERB)
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{
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switch(param)
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{
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case AL_REVERB_DENSITY:
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case AL_REVERB_DIFFUSION:
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case AL_REVERB_GAIN:
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case AL_REVERB_GAINHF:
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case AL_REVERB_DECAY_TIME:
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case AL_REVERB_DECAY_HFRATIO:
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case AL_REVERB_REFLECTIONS_GAIN:
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case AL_REVERB_REFLECTIONS_DELAY:
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case AL_REVERB_LATE_REVERB_GAIN:
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case AL_REVERB_LATE_REVERB_DELAY:
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case AL_REVERB_AIR_ABSORPTION_GAINHF:
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case AL_REVERB_ROOM_ROLLOFF_FACTOR:
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alEffectf(effect, param, pflValues[0]);
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break;
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default:
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alSetError(AL_INVALID_ENUM);
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break;
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}
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}
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else
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alSetError(AL_INVALID_ENUM);
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}
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else
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alSetError(AL_INVALID_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alGetEffecti(ALuint effect, ALenum param, ALint *piValue)
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{
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ALCcontext *Context;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (effect && alIsEffect(effect))
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{
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ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
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if(param == AL_EFFECT_TYPE)
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{
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*piValue = ALEffect->type;
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}
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else if(ALEffect->type == AL_EFFECT_REVERB)
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{
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switch(param)
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{
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case AL_REVERB_DECAY_HFLIMIT:
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*piValue = ALEffect->Reverb.DecayHFLimit;
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break;
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default:
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alSetError(AL_INVALID_ENUM);
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break;
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}
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}
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else
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alSetError(AL_INVALID_ENUM);
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}
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else
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alSetError(AL_INVALID_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alGetEffectiv(ALuint effect, ALenum param, ALint *piValues)
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{
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ALCcontext *Context;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (effect && alIsEffect(effect))
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{
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ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
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if(param == AL_EFFECT_TYPE)
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{
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alGetEffecti(effect, param, piValues);
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}
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else if(ALEffect->type == AL_EFFECT_REVERB)
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{
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switch(param)
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{
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case AL_REVERB_DECAY_HFLIMIT:
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alGetEffecti(effect, param, piValues);
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break;
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default:
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alSetError(AL_INVALID_ENUM);
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break;
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}
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}
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else
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alSetError(AL_INVALID_ENUM);
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}
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else
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alSetError(AL_INVALID_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alGetEffectf(ALuint effect, ALenum param, ALfloat *pflValue)
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{
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ALCcontext *Context;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (effect && alIsEffect(effect))
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{
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ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
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if(ALEffect->type == AL_EFFECT_REVERB)
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{
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switch(param)
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{
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case AL_REVERB_DENSITY:
|
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*pflValue = ALEffect->Reverb.Density;
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break;
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case AL_REVERB_DIFFUSION:
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*pflValue = ALEffect->Reverb.Diffusion;
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break;
|
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case AL_REVERB_GAIN:
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*pflValue = ALEffect->Reverb.Gain;
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break;
|
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case AL_REVERB_GAINHF:
|
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*pflValue = ALEffect->Reverb.GainHF;
|
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break;
|
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|
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case AL_REVERB_DECAY_TIME:
|
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*pflValue = ALEffect->Reverb.DecayTime;
|
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break;
|
|
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case AL_REVERB_DECAY_HFRATIO:
|
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*pflValue = ALEffect->Reverb.DecayHFRatio;
|
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break;
|
|
|
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case AL_REVERB_REFLECTIONS_GAIN:
|
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*pflValue = ALEffect->Reverb.ReflectionsGain;
|
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break;
|
|
|
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case AL_REVERB_REFLECTIONS_DELAY:
|
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*pflValue = ALEffect->Reverb.ReflectionsDelay;
|
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break;
|
|
|
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case AL_REVERB_LATE_REVERB_GAIN:
|
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*pflValue = ALEffect->Reverb.LateReverbGain;
|
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break;
|
|
|
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case AL_REVERB_LATE_REVERB_DELAY:
|
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*pflValue = ALEffect->Reverb.LateReverbDelay;
|
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break;
|
|
|
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case AL_REVERB_AIR_ABSORPTION_GAINHF:
|
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*pflValue = ALEffect->Reverb.AirAbsorptionGainHF;
|
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break;
|
|
|
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case AL_REVERB_ROOM_ROLLOFF_FACTOR:
|
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*pflValue = ALEffect->Reverb.RoomRolloffFactor;
|
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break;
|
|
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
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alSetError(AL_INVALID_ENUM);
|
|
}
|
|
else
|
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alSetError(AL_INVALID_NAME);
|
|
|
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ProcessContext(Context);
|
|
}
|
|
|
|
AL_API ALvoid AL_APIENTRY alGetEffectfv(ALuint effect, ALenum param, ALfloat *pflValues)
|
|
{
|
|
ALCcontext *Context;
|
|
|
|
Context = alcGetCurrentContext();
|
|
SuspendContext(Context);
|
|
|
|
if (effect && alIsEffect(effect))
|
|
{
|
|
ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
|
|
|
|
if(ALEffect->type == AL_EFFECT_REVERB)
|
|
{
|
|
switch(param)
|
|
{
|
|
case AL_REVERB_DENSITY:
|
|
case AL_REVERB_DIFFUSION:
|
|
case AL_REVERB_GAIN:
|
|
case AL_REVERB_GAINHF:
|
|
case AL_REVERB_DECAY_TIME:
|
|
case AL_REVERB_DECAY_HFRATIO:
|
|
case AL_REVERB_REFLECTIONS_GAIN:
|
|
case AL_REVERB_REFLECTIONS_DELAY:
|
|
case AL_REVERB_LATE_REVERB_GAIN:
|
|
case AL_REVERB_LATE_REVERB_DELAY:
|
|
case AL_REVERB_AIR_ABSORPTION_GAINHF:
|
|
case AL_REVERB_ROOM_ROLLOFF_FACTOR:
|
|
alGetEffectf(effect, param, pflValues);
|
|
break;
|
|
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
alSetError(AL_INVALID_ENUM);
|
|
}
|
|
else
|
|
alSetError(AL_INVALID_NAME);
|
|
|
|
ProcessContext(Context);
|
|
}
|
|
|
|
|
|
ALvoid ReleaseALEffects(ALvoid)
|
|
{
|
|
#ifdef _DEBUG
|
|
if(g_EffectCount > 0)
|
|
AL_PRINT("exit() %d Effect(s) NOT deleted\n", g_EffectCount);
|
|
#endif
|
|
|
|
while(g_EffectList)
|
|
{
|
|
ALeffect *temp = g_EffectList;
|
|
g_EffectList = g_EffectList->next;
|
|
|
|
// Release effect structure
|
|
memset(temp, 0, sizeof(ALeffect));
|
|
free(temp);
|
|
}
|
|
g_EffectCount = 0;
|
|
}
|
|
|
|
|
|
static void InitEffectParams(ALeffect *effect, ALenum type)
|
|
{
|
|
effect->type = type;
|
|
switch(type)
|
|
{
|
|
case AL_EFFECT_REVERB:
|
|
effect->Reverb.Density = 1.0f;
|
|
effect->Reverb.Diffusion = 1.0f;
|
|
effect->Reverb.Gain = 0.32f;
|
|
effect->Reverb.GainHF = 0.89f;
|
|
effect->Reverb.DecayTime = 1.49f;
|
|
effect->Reverb.DecayHFRatio = 0.83f;
|
|
effect->Reverb.ReflectionsGain = 0.05f;
|
|
effect->Reverb.ReflectionsDelay = 0.007f;
|
|
effect->Reverb.LateReverbGain = 1.26f;
|
|
effect->Reverb.LateReverbDelay = 0.011f;
|
|
effect->Reverb.AirAbsorptionGainHF = 0.994f;
|
|
effect->Reverb.RoomRolloffFactor = 0.0f;
|
|
effect->Reverb.DecayHFLimit = AL_TRUE;
|
|
break;
|
|
}
|
|
}
|