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/**
* OpenAL cross platform audio library
* Copyright (C) 2011 by Chris Robinson.
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
* Or go to http://www.gnu.org/copyleft/lgpl.html
*/
#include "config.h"
#include <stdlib.h>
#include "alMain.h"
#include "alFilter.h"
#include "alAuxEffectSlot.h"
#include "alError.h"
#include "alu.h"
typedef struct ALdedicatedState {
DERIVE_FROM_TYPE(ALeffectState);
ALfloat CurrentGains[MAX_OUTPUT_CHANNELS];
ALfloat TargetGains[MAX_OUTPUT_CHANNELS];
} ALdedicatedState;
static ALvoid ALdedicatedState_Destruct(ALdedicatedState *state);
static ALboolean ALdedicatedState_deviceUpdate(ALdedicatedState *state, ALCdevice *device);
static ALvoid ALdedicatedState_update(ALdedicatedState *state, const ALCcontext *context, const ALeffectslot *slot, const ALeffectProps *props);
static ALvoid ALdedicatedState_process(ALdedicatedState *state, ALsizei SamplesToDo, const ALfloat (*restrict SamplesIn)[BUFFERSIZE], ALfloat (*restrict SamplesOut)[BUFFERSIZE], ALsizei NumChannels);
DECLARE_DEFAULT_ALLOCATORS(ALdedicatedState)
DEFINE_ALEFFECTSTATE_VTABLE(ALdedicatedState);
static void ALdedicatedState_Construct(ALdedicatedState *state)
{
ALeffectState_Construct(STATIC_CAST(ALeffectState, state));
SET_VTABLE2(ALdedicatedState, ALeffectState, state);
}
static ALvoid ALdedicatedState_Destruct(ALdedicatedState *state)
{
ALeffectState_Destruct(STATIC_CAST(ALeffectState,state));
}
static ALboolean ALdedicatedState_deviceUpdate(ALdedicatedState *state, ALCdevice *UNUSED(device))
{
ALsizei i;
for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
state->CurrentGains[i] = 0.0f;
return AL_TRUE;
}
static ALvoid ALdedicatedState_update(ALdedicatedState *state, const ALCcontext *context, const ALeffectslot *slot, const ALeffectProps *props)
{
const ALCdevice *device = context->Device;
ALfloat Gain;
ALsizei i;
for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
state->TargetGains[i] = 0.0f;
Gain = slot->Params.Gain * props->Dedicated.Gain;
if(slot->Params.EffectType == AL_EFFECT_DEDICATED_LOW_FREQUENCY_EFFECT)
{
int idx;
if((idx=GetChannelIdxByName(&device->RealOut, LFE)) != -1)
{
STATIC_CAST(ALeffectState,state)->OutBuffer = device->RealOut.Buffer;
STATIC_CAST(ALeffectState,state)->OutChannels = device->RealOut.NumChannels;
state->TargetGains[idx] = Gain;
}
}
else if(slot->Params.EffectType == AL_EFFECT_DEDICATED_DIALOGUE)
{
int idx;
/* Dialog goes to the front-center speaker if it exists, otherwise it
* plays from the front-center location. */
if((idx=GetChannelIdxByName(&device->RealOut, FrontCenter)) != -1)
{
STATIC_CAST(ALeffectState,state)->OutBuffer = device->RealOut.Buffer;
STATIC_CAST(ALeffectState,state)->OutChannels = device->RealOut.NumChannels;
state->TargetGains[idx] = Gain;
}
else
{
ALfloat coeffs[MAX_AMBI_COEFFS];
CalcAngleCoeffs(0.0f, 0.0f, 0.0f, coeffs);
STATIC_CAST(ALeffectState,state)->OutBuffer = device->Dry.Buffer;
STATIC_CAST(ALeffectState,state)->OutChannels = device->Dry.NumChannels;
ComputeDryPanGains(&device->Dry, coeffs, Gain, state->TargetGains);
}
}
}
static ALvoid ALdedicatedState_process(ALdedicatedState *state, ALsizei SamplesToDo, const ALfloat (*restrict SamplesIn)[BUFFERSIZE], ALfloat (*restrict SamplesOut)[BUFFERSIZE], ALsizei NumChannels)
{
MixSamples(SamplesIn[0], NumChannels, SamplesOut, state->CurrentGains,
state->TargetGains, SamplesToDo, 0, SamplesToDo);
}
typedef struct ALdedicatedStateFactory {
DERIVE_FROM_TYPE(ALeffectStateFactory);
} ALdedicatedStateFactory;
ALeffectState *ALdedicatedStateFactory_create(ALdedicatedStateFactory *UNUSED(factory))
{
ALdedicatedState *state;
NEW_OBJ0(state, ALdedicatedState)();
if(!state) return NULL;
return STATIC_CAST(ALeffectState, state);
}
DEFINE_ALEFFECTSTATEFACTORY_VTABLE(ALdedicatedStateFactory);
ALeffectStateFactory *ALdedicatedStateFactory_getFactory(void)
{
static ALdedicatedStateFactory DedicatedFactory = { { GET_VTABLE2(ALdedicatedStateFactory, ALeffectStateFactory) } };
return STATIC_CAST(ALeffectStateFactory, &DedicatedFactory);
}
void ALdedicated_setParami(ALeffect *UNUSED(effect), ALCcontext *context, ALenum param, ALint UNUSED(val))
{ alSetError(context, AL_INVALID_ENUM, "Invalid dedicated integer property 0x%04x", param); }
void ALdedicated_setParamiv(ALeffect *UNUSED(effect), ALCcontext *context, ALenum param, const ALint *UNUSED(vals))
{ alSetError(context, AL_INVALID_ENUM, "Invalid dedicated integer-vector property 0x%04x", param); }
void ALdedicated_setParamf(ALeffect *effect, ALCcontext *context, ALenum param, ALfloat val)
{
ALeffectProps *props = &effect->Props;
switch(param)
{
case AL_DEDICATED_GAIN:
if(!(val >= 0.0f && isfinite(val)))
SETERR_RETURN(context, AL_INVALID_VALUE,, "Dedicated gain out of range");
props->Dedicated.Gain = val;
break;
default:
alSetError(context, AL_INVALID_ENUM, "Invalid dedicated float property 0x%04x", param);
}
}
void ALdedicated_setParamfv(ALeffect *effect, ALCcontext *context, ALenum param, const ALfloat *vals)
{ ALdedicated_setParamf(effect, context, param, vals[0]); }
void ALdedicated_getParami(const ALeffect *UNUSED(effect), ALCcontext *context, ALenum param, ALint *UNUSED(val))
{ alSetError(context, AL_INVALID_ENUM, "Invalid dedicated integer property 0x%04x", param); }
void ALdedicated_getParamiv(const ALeffect *UNUSED(effect), ALCcontext *context, ALenum param, ALint *UNUSED(vals))
{ alSetError(context, AL_INVALID_ENUM, "Invalid dedicated integer-vector property 0x%04x", param); }
void ALdedicated_getParamf(const ALeffect *effect, ALCcontext *context, ALenum param, ALfloat *val)
{
const ALeffectProps *props = &effect->Props;
switch(param)
{
case AL_DEDICATED_GAIN:
*val = props->Dedicated.Gain;
break;
default:
alSetError(context, AL_INVALID_ENUM, "Invalid dedicated float property 0x%04x", param);
}
}
void ALdedicated_getParamfv(const ALeffect *effect, ALCcontext *context, ALenum param, ALfloat *vals)
{ ALdedicated_getParamf(effect, context, param, vals); }
DEFINE_ALEFFECT_VTABLE(ALdedicated);
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