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/**
* OpenAL cross platform audio library
* Copyright (C) 1999-2007 by authors.
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
* Or go to http://www.gnu.org/copyleft/lgpl.html
*/
#include "config.h"
#include <stdlib.h>
#include <math.h>
#include "AL/al.h"
#include "AL/alc.h"
#include "alMain.h"
#include "alAuxEffectSlot.h"
#include "alThunk.h"
#include "alError.h"
#include "alSource.h"
static ALvoid InitializeEffect(ALCcontext *Context, ALeffectslot *EffectSlot, ALeffect *effect);
#define LookupEffectSlot(m, k) ((ALeffectslot*)LookupUIntMapKey(&(m), (k)))
#define LookupEffect(m, k) ((ALeffect*)LookupUIntMapKey(&(m), (k)))
AL_API ALvoid AL_APIENTRY alGenAuxiliaryEffectSlots(ALsizei n, ALuint *effectslots)
{
ALCcontext *Context;
ALCdevice *Device;
Context = GetContextSuspended();
if(!Context) return;
Device = Context->Device;
if(n < 0 || IsBadWritePtr((void*)effectslots, n * sizeof(ALuint)))
alSetError(Context, AL_INVALID_VALUE);
else if((ALuint)n > Device->AuxiliaryEffectSlotMax - Context->EffectSlotMap.size)
alSetError(Context, AL_INVALID_VALUE);
else
{
ALenum err;
ALsizei i, j;
i = 0;
while(i < n)
{
ALeffectslot *slot = calloc(1, sizeof(ALeffectslot));
if(!slot || !(slot->EffectState=NoneCreate()))
{
free(slot);
// We must have run out or memory
alSetError(Context, AL_OUT_OF_MEMORY);
alDeleteAuxiliaryEffectSlots(i, effectslots);
break;
}
slot->effectslot = (ALuint)ALTHUNK_ADDENTRY(slot);
err = InsertUIntMapEntry(&Context->EffectSlotMap,
slot->effectslot, slot);
if(err != AL_NO_ERROR)
{
ALTHUNK_REMOVEENTRY(slot->effectslot);
ALEffect_Destroy(slot->EffectState);
free(slot);
alSetError(Context, err);
alDeleteAuxiliaryEffectSlots(i, effectslots);
break;
}
effectslots[i++] = slot->effectslot;
slot->Gain = 1.0;
slot->AuxSendAuto = AL_TRUE;
for(j = 0;j < BUFFERSIZE;j++)
slot->WetBuffer[j] = 0.0f;
for(j = 0;j < 1;j++)
{
slot->ClickRemoval[j] = 0.0f;
slot->PendingClicks[j] = 0.0f;
}
slot->refcount = 0;
}
}
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alDeleteAuxiliaryEffectSlots(ALsizei n, ALuint *effectslots)
{
ALCcontext *Context;
ALeffectslot *EffectSlot;
ALboolean SlotsValid = AL_FALSE;
ALsizei i;
Context = GetContextSuspended();
if(!Context) return;
if(n < 0)
alSetError(Context, AL_INVALID_VALUE);
else
{
SlotsValid = AL_TRUE;
// Check that all effectslots are valid
for(i = 0;i < n;i++)
{
if((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslots[i])) == NULL)
{
alSetError(Context, AL_INVALID_NAME);
SlotsValid = AL_FALSE;
break;
}
else if(EffectSlot->refcount > 0)
{
alSetError(Context, AL_INVALID_NAME);
SlotsValid = AL_FALSE;
break;
}
}
}
if(SlotsValid)
{
// All effectslots are valid
for(i = 0;i < n;i++)
{
// Recheck that the effectslot is valid, because there could be duplicated names
if((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslots[i])) == NULL)
continue;
ALEffect_Destroy(EffectSlot->EffectState);
RemoveUIntMapKey(&Context->EffectSlotMap, EffectSlot->effectslot);
ALTHUNK_REMOVEENTRY(EffectSlot->effectslot);
memset(EffectSlot, 0, sizeof(ALeffectslot));
free(EffectSlot);
}
}
ProcessContext(Context);
}
AL_API ALboolean AL_APIENTRY alIsAuxiliaryEffectSlot(ALuint effectslot)
{
ALCcontext *Context;
ALboolean result;
Context = GetContextSuspended();
if(!Context) return AL_FALSE;
result = (LookupEffectSlot(Context->EffectSlotMap, effectslot) ?
AL_TRUE : AL_FALSE);
ProcessContext(Context);
return result;
}
AL_API ALvoid AL_APIENTRY alAuxiliaryEffectSloti(ALuint effectslot, ALenum param, ALint iValue)
{
ALCdevice *Device;
ALCcontext *Context;
ALboolean updateSources = AL_FALSE;
ALeffectslot *EffectSlot;
Context = GetContextSuspended();
if(!Context) return;
Device = Context->Device;
if((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslot)) != NULL)
{
switch(param)
{
case AL_EFFECTSLOT_EFFECT: {
ALeffect *effect = NULL;
if(iValue == 0 ||
(effect=LookupEffect(Device->EffectMap, iValue)) != NULL)
{
InitializeEffect(Context, EffectSlot, effect);
updateSources = AL_TRUE;
}
else
alSetError(Context, AL_INVALID_VALUE);
} break;
case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
if(iValue == AL_TRUE || iValue == AL_FALSE)
{
EffectSlot->AuxSendAuto = iValue;
updateSources = AL_TRUE;
}
else
alSetError(Context, AL_INVALID_VALUE);
break;
default:
alSetError(Context, AL_INVALID_ENUM);
break;
}
}
else
alSetError(Context, AL_INVALID_NAME);
// Force updating the sources that use this slot, since it affects the
// sending parameters
if(updateSources)
{
ALsizei pos;
for(pos = 0;pos < Context->SourceMap.size;pos++)
{
ALsource *source = Context->SourceMap.array[pos].value;
ALuint i;
for(i = 0;i < Device->NumAuxSends;i++)
{
if(!source->Send[i].Slot ||
source->Send[i].Slot->effectslot != effectslot)
continue;
source->NeedsUpdate = AL_TRUE;
break;
}
}
}
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alAuxiliaryEffectSlotiv(ALuint effectslot, ALenum param, ALint *piValues)
{
ALCcontext *Context;
Context = GetContextSuspended();
if(!Context) return;
if(LookupEffectSlot(Context->EffectSlotMap, effectslot) != NULL)
{
switch(param)
{
case AL_EFFECTSLOT_EFFECT:
case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
alAuxiliaryEffectSloti(effectslot, param, piValues[0]);
break;
default:
alSetError(Context, AL_INVALID_ENUM);
break;
}
}
else
alSetError(Context, AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alAuxiliaryEffectSlotf(ALuint effectslot, ALenum param, ALfloat flValue)
{
ALCcontext *Context;
ALeffectslot *EffectSlot;
Context = GetContextSuspended();
if(!Context) return;
if((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslot)) != NULL)
{
switch(param)
{
case AL_EFFECTSLOT_GAIN:
if(flValue >= 0.0f && flValue <= 1.0f)
EffectSlot->Gain = flValue;
else
alSetError(Context, AL_INVALID_VALUE);
break;
default:
alSetError(Context, AL_INVALID_ENUM);
break;
}
}
else
alSetError(Context, AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alAuxiliaryEffectSlotfv(ALuint effectslot, ALenum param, ALfloat *pflValues)
{
ALCcontext *Context;
Context = GetContextSuspended();
if(!Context) return;
if(LookupEffectSlot(Context->EffectSlotMap, effectslot) != NULL)
{
switch(param)
{
case AL_EFFECTSLOT_GAIN:
alAuxiliaryEffectSlotf(effectslot, param, pflValues[0]);
break;
default:
alSetError(Context, AL_INVALID_ENUM);
break;
}
}
else
alSetError(Context, AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alGetAuxiliaryEffectSloti(ALuint effectslot, ALenum param, ALint *piValue)
{
ALCcontext *Context;
ALeffectslot *EffectSlot;
Context = GetContextSuspended();
if(!Context) return;
if((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslot)) != NULL)
{
switch(param)
{
case AL_EFFECTSLOT_EFFECT:
*piValue = EffectSlot->effect.effect;
break;
case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
*piValue = EffectSlot->AuxSendAuto;
break;
default:
alSetError(Context, AL_INVALID_ENUM);
break;
}
}
else
alSetError(Context, AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alGetAuxiliaryEffectSlotiv(ALuint effectslot, ALenum param, ALint *piValues)
{
ALCcontext *Context;
Context = GetContextSuspended();
if(!Context) return;
if(LookupEffectSlot(Context->EffectSlotMap, effectslot) != NULL)
{
switch(param)
{
case AL_EFFECTSLOT_EFFECT:
case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
alGetAuxiliaryEffectSloti(effectslot, param, piValues);
break;
default:
alSetError(Context, AL_INVALID_ENUM);
break;
}
}
else
alSetError(Context, AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alGetAuxiliaryEffectSlotf(ALuint effectslot, ALenum param, ALfloat *pflValue)
{
ALCcontext *Context;
ALeffectslot *EffectSlot;
Context = GetContextSuspended();
if(!Context) return;
if((EffectSlot=LookupEffectSlot(Context->EffectSlotMap, effectslot)) != NULL)
{
switch(param)
{
case AL_EFFECTSLOT_GAIN:
*pflValue = EffectSlot->Gain;
break;
default:
alSetError(Context, AL_INVALID_ENUM);
break;
}
}
else
alSetError(Context, AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alGetAuxiliaryEffectSlotfv(ALuint effectslot, ALenum param, ALfloat *pflValues)
{
ALCcontext *Context;
Context = GetContextSuspended();
if(!Context) return;
if(LookupEffectSlot(Context->EffectSlotMap, effectslot) != NULL)
{
switch(param)
{
case AL_EFFECTSLOT_GAIN:
alGetAuxiliaryEffectSlotf(effectslot, param, pflValues);
break;
default:
alSetError(Context, AL_INVALID_ENUM);
break;
}
}
else
alSetError(Context, AL_INVALID_NAME);
ProcessContext(Context);
}
static ALvoid NoneDestroy(ALeffectState *State)
{ free(State); }
static ALboolean NoneDeviceUpdate(ALeffectState *State, ALCdevice *Device)
{
return AL_TRUE;
(void)State;
(void)Device;
}
static ALvoid NoneUpdate(ALeffectState *State, ALCcontext *Context, const ALeffect *Effect)
{
(void)State;
(void)Context;
(void)Effect;
}
static ALvoid NoneProcess(ALeffectState *State, const ALeffectslot *Slot, ALuint SamplesToDo, const ALfloat *SamplesIn, ALfloat (*SamplesOut)[MAXCHANNELS])
{
(void)State;
(void)Slot;
(void)SamplesToDo;
(void)SamplesIn;
(void)SamplesOut;
}
ALeffectState *NoneCreate(void)
{
ALeffectState *state;
state = calloc(1, sizeof(*state));
if(!state)
return NULL;
state->Destroy = NoneDestroy;
state->DeviceUpdate = NoneDeviceUpdate;
state->Update = NoneUpdate;
state->Process = NoneProcess;
return state;
}
static ALvoid InitializeEffect(ALCcontext *Context, ALeffectslot *EffectSlot, ALeffect *effect)
{
if(EffectSlot->effect.type != (effect?effect->type:AL_EFFECT_NULL))
{
ALeffectState *NewState = NULL;
if(!effect || effect->type == AL_EFFECT_NULL)
NewState = NoneCreate();
else if(effect->type == AL_EFFECT_EAXREVERB)
NewState = EAXVerbCreate();
else if(effect->type == AL_EFFECT_REVERB)
NewState = VerbCreate();
else if(effect->type == AL_EFFECT_ECHO)
NewState = EchoCreate();
else if(effect->type == AL_EFFECT_RING_MODULATOR)
NewState = ModulatorCreate();
/* No new state? An error occured.. */
if(NewState == NULL ||
ALEffect_DeviceUpdate(NewState, Context->Device) == AL_FALSE)
{
if(NewState)
ALEffect_Destroy(NewState);
alSetError(Context, AL_OUT_OF_MEMORY);
return;
}
if(EffectSlot->EffectState)
ALEffect_Destroy(EffectSlot->EffectState);
EffectSlot->EffectState = NewState;
}
if(!effect)
memset(&EffectSlot->effect, 0, sizeof(EffectSlot->effect));
else
memcpy(&EffectSlot->effect, effect, sizeof(*effect));
ALEffect_Update(EffectSlot->EffectState, Context, effect);
}
ALvoid ReleaseALAuxiliaryEffectSlots(ALCcontext *Context)
{
ALsizei pos;
for(pos = 0;pos < Context->EffectSlotMap.size;pos++)
{
ALeffectslot *temp = Context->EffectSlotMap.array[pos].value;
Context->EffectSlotMap.array[pos].value = NULL;
// Release effectslot structure
ALEffect_Destroy(temp->EffectState);
ALTHUNK_REMOVEENTRY(temp->effectslot);
memset(temp, 0, sizeof(ALeffectslot));
free(temp);
}
}
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