open source
This commit is contained in:
lvfulong
@@ -0,0 +1,523 @@
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/**
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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 <math.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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#include "alSource.h"
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static ALvoid InitializeEffect(ALCcontext *Context, ALeffectslot *EffectSlot, ALeffect *effect);
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#define LookupEffectSlot(m, k) ((ALeffectslot*)LookupUIntMapKey(&(m), (k)))
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#define LookupEffect(m, k) ((ALeffect*)LookupUIntMapKey(&(m), (k)))
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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=0, j;
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Context = GetContextSuspended();
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if(!Context) return;
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if(n > 0)
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{
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ALCdevice *Device = Context->Device;
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if(Context->EffectSlotMap.size+n <= (ALsizei)Device->AuxiliaryEffectSlotMax)
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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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ALenum err;
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while(i < n)
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{
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ALeffectslot *slot = calloc(1, sizeof(ALeffectslot));
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if(!slot || !(slot->EffectState=NoneCreate()))
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{
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free(slot);
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// We must have run out or memory
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alSetError(Context, AL_OUT_OF_MEMORY);
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alDeleteAuxiliaryEffectSlots(i, effectslots);
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break;
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}
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slot->effectslot = (ALuint)ALTHUNK_ADDENTRY(slot);
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err = InsertUIntMapEntry(&Context->EffectSlotMap,
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slot->effectslot, slot);
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if(err != AL_NO_ERROR)
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{
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ALTHUNK_REMOVEENTRY(slot->effectslot);
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ALEffect_Destroy(slot->EffectState);
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free(slot);
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alSetError(Context, err);
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alDeleteAuxiliaryEffectSlots(i, effectslots);
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break;
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}
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effectslots[i++] = slot->effectslot;
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slot->Gain = 1.0;
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slot->AuxSendAuto = AL_TRUE;
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for(j = 0;j < BUFFERSIZE;j++)
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slot->WetBuffer[j] = 0.0f;
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slot->refcount = 0;
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}
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}
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}
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else
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alSetError(Context, 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 *EffectSlot;
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ALsizei i;
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Context = GetContextSuspended();
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if(!Context) return;
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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((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslots[i])) == NULL)
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{
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alSetError(Context, AL_INVALID_NAME);
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break;
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}
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else
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{
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if(EffectSlot->refcount > 0)
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{
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alSetError(Context, AL_INVALID_NAME);
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break;
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}
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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((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslots[i])) != NULL)
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{
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ALEffect_Destroy(EffectSlot->EffectState);
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RemoveUIntMapKey(&Context->EffectSlotMap, EffectSlot->effectslot);
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ALTHUNK_REMOVEENTRY(EffectSlot->effectslot);
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memset(EffectSlot, 0, sizeof(ALeffectslot));
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free(EffectSlot);
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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(Context, 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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ALboolean result;
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Context = GetContextSuspended();
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if(!Context) return AL_FALSE;
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result = (LookupEffectSlot(Context->EffectSlotMap, effectslot) ?
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AL_TRUE : AL_FALSE);
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ProcessContext(Context);
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return result;
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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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ALboolean updateSources = AL_FALSE;
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ALeffectslot *EffectSlot;
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Context = GetContextSuspended();
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if(!Context) return;
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if((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslot)) != NULL)
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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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ALeffect *effect = NULL;
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if(iValue == 0 ||
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(effect=LookupEffect(Context->Device->EffectMap, iValue)) != NULL)
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{
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InitializeEffect(Context, EffectSlot, effect);
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updateSources = AL_TRUE;
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}
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else
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alSetError(Context, 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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{
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EffectSlot->AuxSendAuto = iValue;
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updateSources = AL_TRUE;
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}
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else
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alSetError(Context, AL_INVALID_VALUE);
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break;
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default:
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alSetError(Context, 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(Context, AL_INVALID_NAME);
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// Force updating the sources that use this slot, since it affects the
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// sending parameters
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if(updateSources)
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{
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ALsizei pos;
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for(pos = 0;pos < Context->SourceMap.size;pos++)
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{
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ALsource *source = Context->SourceMap.array[pos].value;
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ALuint i;
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for(i = 0;i < MAX_SENDS;i++)
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{
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if(!source->Send[i].Slot ||
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source->Send[i].Slot->effectslot != effectslot)
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continue;
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source->NeedsUpdate = AL_TRUE;
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break;
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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 alAuxiliaryEffectSlotiv(ALuint effectslot, ALenum param, ALint *piValues)
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{
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ALCcontext *Context;
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Context = GetContextSuspended();
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if(!Context) return;
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if(LookupEffectSlot(Context->EffectSlotMap, effectslot) != NULL)
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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(Context, 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(Context, 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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ALeffectslot *EffectSlot;
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Context = GetContextSuspended();
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if(!Context) return;
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if((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslot)) != NULL)
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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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if(flValue >= 0.0f && flValue <= 1.0f)
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EffectSlot->Gain = flValue;
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else
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alSetError(Context, AL_INVALID_VALUE);
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break;
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default:
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alSetError(Context, 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(Context, 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 = GetContextSuspended();
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if(!Context) return;
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if(LookupEffectSlot(Context->EffectSlotMap, effectslot) != NULL)
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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(Context, 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(Context, 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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ALeffectslot *EffectSlot;
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Context = GetContextSuspended();
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if(!Context) return;
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if((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslot)) != NULL)
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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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*piValue = EffectSlot->effect.effect;
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break;
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case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
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*piValue = EffectSlot->AuxSendAuto;
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break;
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default:
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alSetError(Context, 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(Context, 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 = GetContextSuspended();
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if(!Context) return;
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if(LookupEffectSlot(Context->EffectSlotMap, effectslot) != NULL)
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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(Context, 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(Context, 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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ALeffectslot *EffectSlot;
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Context = GetContextSuspended();
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if(!Context) return;
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if((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslot)) != NULL)
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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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*pflValue = EffectSlot->Gain;
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break;
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default:
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alSetError(Context, 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(Context, 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 = GetContextSuspended();
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if(!Context) return;
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if(LookupEffectSlot(Context->EffectSlotMap, effectslot) != NULL)
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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(Context, 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(Context, AL_INVALID_NAME);
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ProcessContext(Context);
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}
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static ALvoid NoneDestroy(ALeffectState *State)
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{ free(State); }
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static ALboolean NoneDeviceUpdate(ALeffectState *State, ALCdevice *Device)
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{
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return AL_TRUE;
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(void)State;
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(void)Device;
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}
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static ALvoid NoneUpdate(ALeffectState *State, ALCcontext *Context, const ALeffect *Effect)
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{
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(void)State;
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(void)Context;
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(void)Effect;
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}
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static ALvoid NoneProcess(ALeffectState *State, const ALeffectslot *Slot, ALuint SamplesToDo, const ALfloat *SamplesIn, ALfloat (*SamplesOut)[OUTPUTCHANNELS])
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{
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(void)State;
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(void)Slot;
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(void)SamplesToDo;
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(void)SamplesIn;
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(void)SamplesOut;
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}
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ALeffectState *NoneCreate(void)
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{
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ALeffectState *state;
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state = calloc(1, sizeof(*state));
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if(!state)
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return NULL;
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state->Destroy = NoneDestroy;
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state->DeviceUpdate = NoneDeviceUpdate;
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state->Update = NoneUpdate;
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state->Process = NoneProcess;
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return state;
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}
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static ALvoid InitializeEffect(ALCcontext *Context, ALeffectslot *EffectSlot, ALeffect *effect)
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{
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if(EffectSlot->effect.type != (effect?effect->type:AL_EFFECT_NULL))
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{
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ALeffectState *NewState = NULL;
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if(!effect || effect->type == AL_EFFECT_NULL)
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NewState = NoneCreate();
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else if(effect->type == AL_EFFECT_EAXREVERB)
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NewState = EAXVerbCreate();
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else if(effect->type == AL_EFFECT_REVERB)
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NewState = VerbCreate();
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else if(effect->type == AL_EFFECT_ECHO)
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NewState = EchoCreate();
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else if(effect->type == AL_EFFECT_RING_MODULATOR)
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NewState = ModulatorCreate();
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/* No new state? An error occured.. */
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if(NewState == NULL ||
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ALEffect_DeviceUpdate(NewState, Context->Device) == AL_FALSE)
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{
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if(NewState)
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ALEffect_Destroy(NewState);
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alSetError(Context, AL_OUT_OF_MEMORY);
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return;
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}
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if(EffectSlot->EffectState)
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ALEffect_Destroy(EffectSlot->EffectState);
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EffectSlot->EffectState = NewState;
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}
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if(!effect)
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memset(&EffectSlot->effect, 0, sizeof(EffectSlot->effect));
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else
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memcpy(&EffectSlot->effect, effect, sizeof(*effect));
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ALEffect_Update(EffectSlot->EffectState, Context, effect);
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}
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ALvoid ReleaseALAuxiliaryEffectSlots(ALCcontext *Context)
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{
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ALsizei pos;
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for(pos = 0;pos < Context->EffectSlotMap.size;pos++)
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{
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ALeffectslot *temp = Context->EffectSlotMap.array[pos].value;
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Context->EffectSlotMap.array[pos].value = NULL;
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// Release effectslot structure
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ALEffect_Destroy(temp->EffectState);
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ALTHUNK_REMOVEENTRY(temp->effectslot);
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memset(temp, 0, sizeof(ALeffectslot));
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free(temp);
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||||
}
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||||
}
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||||
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Block a user