425 lines
11 KiB
C
425 lines
11 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 <stdlib.h>
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#include "config.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 "alAuxEffectSlot.h"
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#include "alThunk.h"
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#include "alError.h"
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static ALeffectslot *g_AuxiliaryEffectSlotList;
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static ALuint g_AuxiliaryEffectSlotCount;
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AL_API ALvoid AL_APIENTRY alGenAuxiliaryEffectSlots(ALsizei n, ALuint *effectslots)
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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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/* NOTE: We only support one slot currently */
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if(n == 1 && g_AuxiliaryEffectSlotCount == 0)
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{
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// Check that enough memory has been allocted in the 'effectslots' array for n Effect Slots
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if (!IsBadWritePtr((void*)effectslots, n * sizeof(ALuint)))
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{
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ALeffectslot **list = &g_AuxiliaryEffectSlotList;
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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(ALeffectslot));
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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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alDeleteAuxiliaryEffectSlots(i, effectslots);
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alSetError(AL_OUT_OF_MEMORY);
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break;
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}
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(*list)->Gain = 1.0;
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(*list)->AuxSendAuto = AL_TRUE;
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effectslots[i] = (ALuint)ALTHUNK_ADDENTRY(*list);
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(*list)->effectslot = effectslots[i];
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g_AuxiliaryEffectSlotCount++;
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i++;
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}
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}
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}
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else
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alSetError(AL_INVALID_OPERATION);
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}
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alDeleteAuxiliaryEffectSlots(ALsizei n, ALuint *effectslots)
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{
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ALCcontext *Context;
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ALeffectslot *ALAuxiliaryEffectSlot;
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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 effectslots are valid
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for (i = 0; i < n; i++)
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{
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if (!alIsAuxiliaryEffectSlot(effectslots[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 effectslots are valid
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for (i = 0; i < n; i++)
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{
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// Recheck that the effectslot is valid, because there could be duplicated names
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if (alIsAuxiliaryEffectSlot(effectslots[i]))
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{
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ALeffectslot **list;
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ALAuxiliaryEffectSlot = ((ALeffectslot*)ALTHUNK_LOOKUPENTRY(effectslots[i]));
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// Remove Source from list of Sources
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list = &g_AuxiliaryEffectSlotList;
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while(*list && *list != ALAuxiliaryEffectSlot)
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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(ALAuxiliaryEffectSlot->effectslot);
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memset(ALAuxiliaryEffectSlot, 0, sizeof(ALeffectslot));
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free(ALAuxiliaryEffectSlot);
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g_AuxiliaryEffectSlotCount--;
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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 alIsAuxiliaryEffectSlot(ALuint effectslot)
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{
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ALCcontext *Context;
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ALeffectslot **list;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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list = &g_AuxiliaryEffectSlotList;
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while(*list && (*list)->effectslot != effectslot)
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list = &(*list)->next;
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ProcessContext(Context);
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return (*list ? AL_TRUE : AL_FALSE);
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}
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AL_API ALvoid AL_APIENTRY alAuxiliaryEffectSloti(ALuint effectslot, 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 (alIsAuxiliaryEffectSlot(effectslot))
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{
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ALeffectslot *ALEffectSlot = (ALeffectslot*)ALTHUNK_LOOKUPENTRY(effectslot);
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switch(param)
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{
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case AL_EFFECTSLOT_EFFECT:
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if(alIsEffect(iValue))
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{
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ALeffect *effect = (ALeffect*)ALTHUNK_LOOKUPENTRY(iValue);
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if(!effect)
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{
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ALEffectSlot->effect.type = AL_EFFECT_NULL;
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ALEffectSlot->effect.effect = 0;
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}
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else
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memcpy(&ALEffectSlot->effect, effect, sizeof(*effect));
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}
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
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if(iValue == AL_TRUE || iValue == AL_FALSE)
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ALEffectSlot->AuxSendAuto = 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_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alAuxiliaryEffectSlotiv(ALuint effectslot, 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 (alIsAuxiliaryEffectSlot(effectslot))
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{
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switch(param)
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{
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case AL_EFFECTSLOT_EFFECT:
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case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
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alAuxiliaryEffectSloti(effectslot, 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_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alAuxiliaryEffectSlotf(ALuint effectslot, ALenum param, ALfloat flValue)
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{
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ALCcontext *Context;
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(void)flValue;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (alIsAuxiliaryEffectSlot(effectslot))
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{
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ALeffectslot *ALEffectSlot = (ALeffectslot*)ALTHUNK_LOOKUPENTRY(effectslot);
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switch(param)
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{
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case AL_EFFECTSLOT_GAIN:
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if(flValue >= 0.0f && flValue <= 1.0f)
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ALEffectSlot->Gain = 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_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alAuxiliaryEffectSlotfv(ALuint effectslot, 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 (alIsAuxiliaryEffectSlot(effectslot))
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{
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switch(param)
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{
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case AL_EFFECTSLOT_GAIN:
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alAuxiliaryEffectSlotf(effectslot, 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_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alGetAuxiliaryEffectSloti(ALuint effectslot, 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 (alIsAuxiliaryEffectSlot(effectslot))
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{
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ALeffectslot *ALEffectSlot = (ALeffectslot*)ALTHUNK_LOOKUPENTRY(effectslot);
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switch(param)
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{
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case AL_EFFECTSLOT_EFFECT:
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*piValue = ALEffectSlot->effect.effect;
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break;
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case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
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*piValue = ALEffectSlot->AuxSendAuto;
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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_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alGetAuxiliaryEffectSlotiv(ALuint effectslot, 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 (alIsAuxiliaryEffectSlot(effectslot))
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{
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switch(param)
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{
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case AL_EFFECTSLOT_EFFECT:
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case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
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alGetAuxiliaryEffectSloti(effectslot, 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_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alGetAuxiliaryEffectSlotf(ALuint effectslot, 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 (alIsAuxiliaryEffectSlot(effectslot))
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{
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ALeffectslot *ALEffectSlot = (ALeffectslot*)ALTHUNK_LOOKUPENTRY(effectslot);
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switch(param)
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{
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case AL_EFFECTSLOT_GAIN:
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*pflValue = ALEffectSlot->Gain;
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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_NAME);
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ProcessContext(Context);
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}
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AL_API ALvoid AL_APIENTRY alGetAuxiliaryEffectSlotfv(ALuint effectslot, 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 (alIsAuxiliaryEffectSlot(effectslot))
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{
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switch(param)
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{
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case AL_EFFECTSLOT_GAIN:
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alGetAuxiliaryEffectSlotf(effectslot, param, pflValues);
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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_NAME);
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ProcessContext(Context);
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}
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ALvoid ReleaseALAuxiliaryEffectSlots(ALvoid)
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{
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#ifdef _DEBUG
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if(g_AuxiliaryEffectSlotCount > 0)
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AL_PRINT("exit() %d AuxiliaryEffectSlot(s) NOT deleted\n", g_AuxiliaryEffectSlotCount);
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#endif
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while(g_AuxiliaryEffectSlotList)
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{
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ALeffectslot *temp = g_AuxiliaryEffectSlotList;
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g_AuxiliaryEffectSlotList = g_AuxiliaryEffectSlotList->next;
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// Release effectslot structure
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memset(temp, 0, sizeof(ALeffectslot));
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free(temp);
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}
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g_AuxiliaryEffectSlotCount = 0;
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}
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