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etlegacy-libs/openal/OpenAL32/alFilter.c
Remy Marquis 3844fb88ac libs: updated to openAL 1.17.2
2016-01-25 21:40:17 +01:00

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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.,
* 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 "alu.h"
#include "alFilter.h"
#include "alThunk.h"
#include "alError.h"
extern inline struct ALfilter *LookupFilter(ALCdevice *device, ALuint id);
extern inline struct ALfilter *RemoveFilter(ALCdevice *device, ALuint id);
extern inline void ALfilterState_clear(ALfilterState *filter);
extern inline void ALfilterState_processPassthru(ALfilterState *filter, const ALfloat *src, ALuint numsamples);
extern inline ALfloat ALfilterState_processSingle(ALfilterState *filter, ALfloat sample);
extern inline ALfloat calc_rcpQ_from_slope(ALfloat gain, ALfloat slope);
extern inline ALfloat calc_rcpQ_from_bandwidth(ALfloat freq_mult, ALfloat bandwidth);
static void InitFilterParams(ALfilter *filter, ALenum type);
AL_API ALvoid AL_APIENTRY alGenFilters(ALsizei n, ALuint *filters)
{
ALCdevice *device;
ALCcontext *context;
ALsizei cur = 0;
ALenum err;
context = GetContextRef();
if(!context) return;
if(!(n >= 0))
SET_ERROR_AND_GOTO(context, AL_INVALID_VALUE, done);
device = context->Device;
for(cur = 0;cur < n;cur++)
{
ALfilter *filter = calloc(1, sizeof(ALfilter));
if(!filter)
{
alDeleteFilters(cur, filters);
SET_ERROR_AND_GOTO(context, AL_OUT_OF_MEMORY, done);
}
InitFilterParams(filter, AL_FILTER_NULL);
err = NewThunkEntry(&filter->id);
if(err == AL_NO_ERROR)
err = InsertUIntMapEntry(&device->FilterMap, filter->id, filter);
if(err != AL_NO_ERROR)
{
FreeThunkEntry(filter->id);
memset(filter, 0, sizeof(ALfilter));
free(filter);
alDeleteFilters(cur, filters);
SET_ERROR_AND_GOTO(context, err, done);
}
filters[cur] = filter->id;
}
done:
ALCcontext_DecRef(context);
}
AL_API ALvoid AL_APIENTRY alDeleteFilters(ALsizei n, const ALuint *filters)
{
ALCdevice *device;
ALCcontext *context;
ALfilter *filter;
ALsizei i;
context = GetContextRef();
if(!context) return;
if(!(n >= 0))
SET_ERROR_AND_GOTO(context, AL_INVALID_VALUE, done);
device = context->Device;
for(i = 0;i < n;i++)
{
if(filters[i] && LookupFilter(device, filters[i]) == NULL)
SET_ERROR_AND_GOTO(context, AL_INVALID_NAME, done);
}
for(i = 0;i < n;i++)
{
if((filter=RemoveFilter(device, filters[i])) == NULL)
continue;
FreeThunkEntry(filter->id);
memset(filter, 0, sizeof(*filter));
free(filter);
}
done:
ALCcontext_DecRef(context);
}
AL_API ALboolean AL_APIENTRY alIsFilter(ALuint filter)
{
ALCcontext *Context;
ALboolean result;
Context = GetContextRef();
if(!Context) return AL_FALSE;
result = ((!filter || LookupFilter(Context->Device, filter)) ?
AL_TRUE : AL_FALSE);
ALCcontext_DecRef(Context);
return result;
}
AL_API ALvoid AL_APIENTRY alFilteri(ALuint filter, ALenum param, ALint value)
{
ALCcontext *Context;
ALCdevice *Device;
ALfilter *ALFilter;
Context = GetContextRef();
if(!Context) return;
Device = Context->Device;
if((ALFilter=LookupFilter(Device, filter)) == NULL)
alSetError(Context, AL_INVALID_NAME);
else
{
if(param == AL_FILTER_TYPE)
{
if(value == AL_FILTER_NULL || value == AL_FILTER_LOWPASS ||
value == AL_FILTER_HIGHPASS || value == AL_FILTER_BANDPASS)
InitFilterParams(ALFilter, value);
else
alSetError(Context, AL_INVALID_VALUE);
}
else
{
/* Call the appropriate handler */
ALfilter_SetParami(ALFilter, Context, param, value);
}
}
ALCcontext_DecRef(Context);
}
AL_API ALvoid AL_APIENTRY alFilteriv(ALuint filter, ALenum param, const ALint *values)
{
ALCcontext *Context;
ALCdevice *Device;
ALfilter *ALFilter;
switch(param)
{
case AL_FILTER_TYPE:
alFilteri(filter, param, values[0]);
return;
}
Context = GetContextRef();
if(!Context) return;
Device = Context->Device;
if((ALFilter=LookupFilter(Device, filter)) == NULL)
alSetError(Context, AL_INVALID_NAME);
else
{
/* Call the appropriate handler */
ALfilter_SetParamiv(ALFilter, Context, param, values);
}
ALCcontext_DecRef(Context);
}
AL_API ALvoid AL_APIENTRY alFilterf(ALuint filter, ALenum param, ALfloat value)
{
ALCcontext *Context;
ALCdevice *Device;
ALfilter *ALFilter;
Context = GetContextRef();
if(!Context) return;
Device = Context->Device;
if((ALFilter=LookupFilter(Device, filter)) == NULL)
alSetError(Context, AL_INVALID_NAME);
else
{
/* Call the appropriate handler */
ALfilter_SetParamf(ALFilter, Context, param, value);
}
ALCcontext_DecRef(Context);
}
AL_API ALvoid AL_APIENTRY alFilterfv(ALuint filter, ALenum param, const ALfloat *values)
{
ALCcontext *Context;
ALCdevice *Device;
ALfilter *ALFilter;
Context = GetContextRef();
if(!Context) return;
Device = Context->Device;
if((ALFilter=LookupFilter(Device, filter)) == NULL)
alSetError(Context, AL_INVALID_NAME);
else
{
/* Call the appropriate handler */
ALfilter_SetParamfv(ALFilter, Context, param, values);
}
ALCcontext_DecRef(Context);
}
AL_API ALvoid AL_APIENTRY alGetFilteri(ALuint filter, ALenum param, ALint *value)
{
ALCcontext *Context;
ALCdevice *Device;
ALfilter *ALFilter;
Context = GetContextRef();
if(!Context) return;
Device = Context->Device;
if((ALFilter=LookupFilter(Device, filter)) == NULL)
alSetError(Context, AL_INVALID_NAME);
else
{
if(param == AL_FILTER_TYPE)
*value = ALFilter->type;
else
{
/* Call the appropriate handler */
ALfilter_GetParami(ALFilter, Context, param, value);
}
}
ALCcontext_DecRef(Context);
}
AL_API ALvoid AL_APIENTRY alGetFilteriv(ALuint filter, ALenum param, ALint *values)
{
ALCcontext *Context;
ALCdevice *Device;
ALfilter *ALFilter;
switch(param)
{
case AL_FILTER_TYPE:
alGetFilteri(filter, param, values);
return;
}
Context = GetContextRef();
if(!Context) return;
Device = Context->Device;
if((ALFilter=LookupFilter(Device, filter)) == NULL)
alSetError(Context, AL_INVALID_NAME);
else
{
/* Call the appropriate handler */
ALfilter_GetParamiv(ALFilter, Context, param, values);
}
ALCcontext_DecRef(Context);
}
AL_API ALvoid AL_APIENTRY alGetFilterf(ALuint filter, ALenum param, ALfloat *value)
{
ALCcontext *Context;
ALCdevice *Device;
ALfilter *ALFilter;
Context = GetContextRef();
if(!Context) return;
Device = Context->Device;
if((ALFilter=LookupFilter(Device, filter)) == NULL)
alSetError(Context, AL_INVALID_NAME);
else
{
/* Call the appropriate handler */
ALfilter_GetParamf(ALFilter, Context, param, value);
}
ALCcontext_DecRef(Context);
}
AL_API ALvoid AL_APIENTRY alGetFilterfv(ALuint filter, ALenum param, ALfloat *values)
{
ALCcontext *Context;
ALCdevice *Device;
ALfilter *ALFilter;
Context = GetContextRef();
if(!Context) return;
Device = Context->Device;
if((ALFilter=LookupFilter(Device, filter)) == NULL)
alSetError(Context, AL_INVALID_NAME);
else
{
/* Call the appropriate handler */
ALfilter_GetParamfv(ALFilter, Context, param, values);
}
ALCcontext_DecRef(Context);
}
void ALfilterState_setParams(ALfilterState *filter, ALfilterType type, ALfloat gain, ALfloat freq_mult, ALfloat rcpQ)
{
ALfloat alpha, sqrtgain_alpha_2;
ALfloat w0, sin_w0, cos_w0;
ALfloat a[3] = { 1.0f, 0.0f, 0.0f };
ALfloat b[3] = { 1.0f, 0.0f, 0.0f };
// Limit gain to -100dB
gain = maxf(gain, 0.00001f);
w0 = F_TAU * freq_mult;
sin_w0 = sinf(w0);
cos_w0 = cosf(w0);
alpha = sin_w0/2.0f * rcpQ;
/* Calculate filter coefficients depending on filter type */
switch(type)
{
case ALfilterType_HighShelf:
sqrtgain_alpha_2 = 2.0f * sqrtf(gain) * alpha;
b[0] = gain*((gain+1.0f) + (gain-1.0f)*cos_w0 + sqrtgain_alpha_2);
b[1] = -2.0f*gain*((gain-1.0f) + (gain+1.0f)*cos_w0 );
b[2] = gain*((gain+1.0f) + (gain-1.0f)*cos_w0 - sqrtgain_alpha_2);
a[0] = (gain+1.0f) - (gain-1.0f)*cos_w0 + sqrtgain_alpha_2;
a[1] = 2.0f* ((gain-1.0f) - (gain+1.0f)*cos_w0 );
a[2] = (gain+1.0f) - (gain-1.0f)*cos_w0 - sqrtgain_alpha_2;
break;
case ALfilterType_LowShelf:
sqrtgain_alpha_2 = 2.0f * sqrtf(gain) * alpha;
b[0] = gain*((gain+1.0f) - (gain-1.0f)*cos_w0 + sqrtgain_alpha_2);
b[1] = 2.0f*gain*((gain-1.0f) - (gain+1.0f)*cos_w0 );
b[2] = gain*((gain+1.0f) - (gain-1.0f)*cos_w0 - sqrtgain_alpha_2);
a[0] = (gain+1.0f) + (gain-1.0f)*cos_w0 + sqrtgain_alpha_2;
a[1] = -2.0f* ((gain-1.0f) + (gain+1.0f)*cos_w0 );
a[2] = (gain+1.0f) + (gain-1.0f)*cos_w0 - sqrtgain_alpha_2;
break;
case ALfilterType_Peaking:
gain = sqrtf(gain);
b[0] = 1.0f + alpha * gain;
b[1] = -2.0f * cos_w0;
b[2] = 1.0f - alpha * gain;
a[0] = 1.0f + alpha / gain;
a[1] = -2.0f * cos_w0;
a[2] = 1.0f - alpha / gain;
break;
case ALfilterType_LowPass:
b[0] = (1.0f - cos_w0) / 2.0f;
b[1] = 1.0f - cos_w0;
b[2] = (1.0f - cos_w0) / 2.0f;
a[0] = 1.0f + alpha;
a[1] = -2.0f * cos_w0;
a[2] = 1.0f - alpha;
break;
case ALfilterType_HighPass:
b[0] = (1.0f + cos_w0) / 2.0f;
b[1] = -(1.0f + cos_w0);
b[2] = (1.0f + cos_w0) / 2.0f;
a[0] = 1.0f + alpha;
a[1] = -2.0f * cos_w0;
a[2] = 1.0f - alpha;
break;
case ALfilterType_BandPass:
b[0] = alpha;
b[1] = 0;
b[2] = -alpha;
a[0] = 1.0f + alpha;
a[1] = -2.0f * cos_w0;
a[2] = 1.0f - alpha;
break;
}
filter->a1 = a[1] / a[0];
filter->a2 = a[2] / a[0];
filter->b1 = b[1] / a[0];
filter->b2 = b[2] / a[0];
filter->input_gain = b[0] / a[0];
filter->process = ALfilterState_processC;
}
static void lp_SetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint UNUSED(val))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void lp_SetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALint *UNUSED(vals))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void lp_SetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat val)
{
switch(param)
{
case AL_LOWPASS_GAIN:
if(!(val >= AL_LOWPASS_MIN_GAIN && val <= AL_LOWPASS_MAX_GAIN))
SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
filter->Gain = val;
break;
case AL_LOWPASS_GAINHF:
if(!(val >= AL_LOWPASS_MIN_GAINHF && val <= AL_LOWPASS_MAX_GAINHF))
SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
filter->GainHF = val;
break;
default:
SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
}
}
static void lp_SetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, const ALfloat *vals)
{
lp_SetParamf(filter, context, param, vals[0]);
}
static void lp_GetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(val))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void lp_GetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(vals))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void lp_GetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *val)
{
switch(param)
{
case AL_LOWPASS_GAIN:
*val = filter->Gain;
break;
case AL_LOWPASS_GAINHF:
*val = filter->GainHF;
break;
default:
SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
}
}
static void lp_GetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *vals)
{
lp_GetParamf(filter, context, param, vals);
}
static void hp_SetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint UNUSED(val))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void hp_SetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALint *UNUSED(vals))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void hp_SetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat val)
{
switch(param)
{
case AL_HIGHPASS_GAIN:
if(!(val >= AL_HIGHPASS_MIN_GAIN && val <= AL_HIGHPASS_MAX_GAIN))
SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
filter->Gain = val;
break;
case AL_HIGHPASS_GAINLF:
if(!(val >= AL_HIGHPASS_MIN_GAINLF && val <= AL_HIGHPASS_MAX_GAINLF))
SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
filter->GainLF = val;
break;
default:
SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
}
}
static void hp_SetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, const ALfloat *vals)
{
hp_SetParamf(filter, context, param, vals[0]);
}
static void hp_GetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(val))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void hp_GetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(vals))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void hp_GetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *val)
{
switch(param)
{
case AL_HIGHPASS_GAIN:
*val = filter->Gain;
break;
case AL_HIGHPASS_GAINLF:
*val = filter->GainLF;
break;
default:
SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
}
}
static void hp_GetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *vals)
{
hp_GetParamf(filter, context, param, vals);
}
static void bp_SetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint UNUSED(val))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void bp_SetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALint *UNUSED(vals))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void bp_SetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat val)
{
switch(param)
{
case AL_BANDPASS_GAIN:
if(!(val >= AL_BANDPASS_MIN_GAIN && val <= AL_BANDPASS_MAX_GAIN))
SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
filter->Gain = val;
break;
case AL_BANDPASS_GAINHF:
if(!(val >= AL_BANDPASS_MIN_GAINHF && val <= AL_BANDPASS_MAX_GAINHF))
SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
filter->GainHF = val;
break;
case AL_BANDPASS_GAINLF:
if(!(val >= AL_BANDPASS_MIN_GAINLF && val <= AL_BANDPASS_MAX_GAINLF))
SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
filter->GainLF = val;
break;
default:
SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
}
}
static void bp_SetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, const ALfloat *vals)
{
bp_SetParamf(filter, context, param, vals[0]);
}
static void bp_GetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(val))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void bp_GetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(vals))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void bp_GetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *val)
{
switch(param)
{
case AL_BANDPASS_GAIN:
*val = filter->Gain;
break;
case AL_BANDPASS_GAINHF:
*val = filter->GainHF;
break;
case AL_BANDPASS_GAINLF:
*val = filter->GainLF;
break;
default:
SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
}
}
static void bp_GetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *vals)
{
bp_GetParamf(filter, context, param, vals);
}
static void null_SetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint UNUSED(val))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void null_SetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALint *UNUSED(vals))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void null_SetParamf(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALfloat UNUSED(val))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void null_SetParamfv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALfloat *UNUSED(vals))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void null_GetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(val))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void null_GetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(vals))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void null_GetParamf(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALfloat *UNUSED(val))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
static void null_GetParamfv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALfloat *UNUSED(vals))
{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
ALvoid ReleaseALFilters(ALCdevice *device)
{
ALsizei i;
for(i = 0;i < device->FilterMap.size;i++)
{
ALfilter *temp = device->FilterMap.array[i].value;
device->FilterMap.array[i].value = NULL;
// Release filter structure
FreeThunkEntry(temp->id);
memset(temp, 0, sizeof(ALfilter));
free(temp);
}
}
static void InitFilterParams(ALfilter *filter, ALenum type)
{
if(type == AL_FILTER_LOWPASS)
{
filter->Gain = AL_LOWPASS_DEFAULT_GAIN;
filter->GainHF = AL_LOWPASS_DEFAULT_GAINHF;
filter->HFReference = LOWPASSFREQREF;
filter->GainLF = 1.0f;
filter->LFReference = HIGHPASSFREQREF;
filter->SetParami = lp_SetParami;
filter->SetParamiv = lp_SetParamiv;
filter->SetParamf = lp_SetParamf;
filter->SetParamfv = lp_SetParamfv;
filter->GetParami = lp_GetParami;
filter->GetParamiv = lp_GetParamiv;
filter->GetParamf = lp_GetParamf;
filter->GetParamfv = lp_GetParamfv;
}
else if(type == AL_FILTER_HIGHPASS)
{
filter->Gain = AL_HIGHPASS_DEFAULT_GAIN;
filter->GainHF = 1.0f;
filter->HFReference = LOWPASSFREQREF;
filter->GainLF = AL_HIGHPASS_DEFAULT_GAINLF;
filter->LFReference = HIGHPASSFREQREF;
filter->SetParami = hp_SetParami;
filter->SetParamiv = hp_SetParamiv;
filter->SetParamf = hp_SetParamf;
filter->SetParamfv = hp_SetParamfv;
filter->GetParami = hp_GetParami;
filter->GetParamiv = hp_GetParamiv;
filter->GetParamf = hp_GetParamf;
filter->GetParamfv = hp_GetParamfv;
}
else if(type == AL_FILTER_BANDPASS)
{
filter->Gain = AL_BANDPASS_DEFAULT_GAIN;
filter->GainHF = AL_BANDPASS_DEFAULT_GAINHF;
filter->HFReference = LOWPASSFREQREF;
filter->GainLF = AL_BANDPASS_DEFAULT_GAINLF;
filter->LFReference = HIGHPASSFREQREF;
filter->SetParami = bp_SetParami;
filter->SetParamiv = bp_SetParamiv;
filter->SetParamf = bp_SetParamf;
filter->SetParamfv = bp_SetParamfv;
filter->GetParami = bp_GetParami;
filter->GetParamiv = bp_GetParamiv;
filter->GetParamf = bp_GetParamf;
filter->GetParamfv = bp_GetParamfv;
}
else
{
filter->Gain = 1.0f;
filter->GainHF = 1.0f;
filter->HFReference = LOWPASSFREQREF;
filter->GainLF = 1.0f;
filter->LFReference = HIGHPASSFREQREF;
filter->SetParami = null_SetParami;
filter->SetParamiv = null_SetParamiv;
filter->SetParamf = null_SetParamf;
filter->SetParamfv = null_SetParamfv;
filter->GetParami = null_GetParami;
filter->GetParamiv = null_GetParamiv;
filter->GetParamf = null_GetParamf;
filter->GetParamfv = null_GetParamfv;
}
filter->type = type;
}
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