aboutsummaryrefslogtreecommitdiffstats
path: root/Alc
diff options
context:
space:
mode:
Diffstat (limited to 'Alc')
-rw-r--r--Alc/filters/filter.cpp13
-rw-r--r--Alc/filters/nfc.cpp35
-rw-r--r--Alc/filters/splitter.cpp66
3 files changed, 53 insertions, 61 deletions
diff --git a/Alc/filters/filter.cpp b/Alc/filters/filter.cpp
index 6099cf13..5dc5d9b4 100644
--- a/Alc/filters/filter.cpp
+++ b/Alc/filters/filter.cpp
@@ -92,14 +92,13 @@ void BiquadFilter_setParams(BiquadFilter *filter, BiquadType type, ALfloat gain,
void BiquadFilter_processC(BiquadFilter *filter, ALfloat *RESTRICT dst, const ALfloat *RESTRICT src, ALsizei numsamples)
{
- const ALfloat a1 = filter->a1;
- const ALfloat a2 = filter->a2;
const ALfloat b0 = filter->b0;
const ALfloat b1 = filter->b1;
const ALfloat b2 = filter->b2;
+ const ALfloat a1 = filter->a1;
+ const ALfloat a2 = filter->a2;
ALfloat z1 = filter->z1;
ALfloat z2 = filter->z2;
- ALsizei i;
ASSUME(numsamples > 0);
@@ -111,14 +110,14 @@ void BiquadFilter_processC(BiquadFilter *filter, ALfloat *RESTRICT dst, const AL
*
* See: http://www.earlevel.com/main/2003/02/28/biquads/
*/
- for(i = 0;i < numsamples;i++)
+ auto proc_sample = [b0,b1,b2,a1,a2,&z1,&z2](ALfloat input) noexcept -> ALfloat
{
- ALfloat input = src[i];
ALfloat output = input*b0 + z1;
z1 = input*b1 - output*a1 + z2;
z2 = input*b2 - output*a2;
- dst[i] = output;
- }
+ return output;
+ };
+ std::transform<const ALfloat*RESTRICT>(src, src+numsamples, dst, proc_sample);
filter->z1 = z1;
filter->z2 = z2;
diff --git a/Alc/filters/nfc.cpp b/Alc/filters/nfc.cpp
index 8d61bb37..11a7b467 100644
--- a/Alc/filters/nfc.cpp
+++ b/Alc/filters/nfc.cpp
@@ -2,6 +2,9 @@
#include "config.h"
#include "nfc.h"
+
+#include <algorithm>
+
#include "alMain.h"
#include <string.h>
@@ -228,18 +231,17 @@ void NfcFilterProcess1(NfcFilter *nfc, float *RESTRICT dst, const float *RESTRIC
const float b1 = nfc->first.b1;
const float a1 = nfc->first.a1;
float z1 = nfc->first.z[0];
- int i;
ASSUME(count > 0);
- for(i = 0;i < count;i++)
+ auto proc_sample = [gain,b1,a1,&z1](float in) noexcept -> float
{
- float y = src[i]*gain - a1*z1;
+ float y = in*gain - a1*z1;
float out = y + b1*z1;
z1 += y;
-
- dst[i] = out;
- }
+ return out;
+ };
+ std::transform<const float*RESTRICT>(src, src+count, dst, proc_sample);
nfc->first.z[0] = z1;
}
@@ -252,19 +254,18 @@ void NfcFilterProcess2(NfcFilter *nfc, float *RESTRICT dst, const float *RESTRIC
const float a2 = nfc->second.a2;
float z1 = nfc->second.z[0];
float z2 = nfc->second.z[1];
- int i;
ASSUME(count > 0);
- for(i = 0;i < count;i++)
+ auto proc_sample = [gain,b1,b2,a1,a2,&z1,&z2](float in) noexcept -> float
{
- float y = src[i]*gain - a1*z1 - a2*z2;
+ float y = in*gain - a1*z1 - a2*z2;
float out = y + b1*z1 + b2*z2;
z2 += z1;
z1 += y;
-
- dst[i] = out;
- }
+ return out;
+ };
+ std::transform<const float*RESTRICT>(src, src+count, dst, proc_sample);
nfc->second.z[0] = z1;
nfc->second.z[1] = z2;
}
@@ -281,13 +282,12 @@ void NfcFilterProcess3(NfcFilter *nfc, float *RESTRICT dst, const float *RESTRIC
float z1 = nfc->third.z[0];
float z2 = nfc->third.z[1];
float z3 = nfc->third.z[2];
- int i;
ASSUME(count > 0);
- for(i = 0;i < count;i++)
+ auto proc_sample = [gain,b1,b2,b3,a1,a2,a3,&z1,&z2,&z3](float in) noexcept -> float
{
- float y = src[i]*gain - a1*z1 - a2*z2;
+ float y = in*gain - a1*z1 - a2*z2;
float out = y + b1*z1 + b2*z2;
z2 += z1;
z1 += y;
@@ -296,8 +296,9 @@ void NfcFilterProcess3(NfcFilter *nfc, float *RESTRICT dst, const float *RESTRIC
out = y + b3*z3;
z3 += y;
- dst[i] = out;
- }
+ return out;
+ };
+ std::transform<const float*RESTRICT>(src, src+count, dst, proc_sample);
nfc->third.z[0] = z1;
nfc->third.z[1] = z2;
nfc->third.z[2] = z3;
diff --git a/Alc/filters/splitter.cpp b/Alc/filters/splitter.cpp
index 6aed7493..570f5e2c 100644
--- a/Alc/filters/splitter.cpp
+++ b/Alc/filters/splitter.cpp
@@ -3,15 +3,18 @@
#include "splitter.h"
+#include <cmath>
+#include <algorithm>
+
#include "math_defs.h"
void bandsplit_init(BandSplitter *splitter, ALfloat f0norm)
{
ALfloat w = f0norm * F_TAU;
- ALfloat cw = cosf(w);
+ ALfloat cw = std::cos(w);
if(cw > FLT_EPSILON)
- splitter->coeff = (sinf(w) - 1.0f) / cw;
+ splitter->coeff = (std::sin(w) - 1.0f) / cw;
else
splitter->coeff = cw * -0.5f;
@@ -30,51 +33,46 @@ void bandsplit_clear(BandSplitter *splitter)
void bandsplit_process(BandSplitter *splitter, ALfloat *RESTRICT hpout, ALfloat *RESTRICT lpout,
const ALfloat *input, ALsizei count)
{
- ALfloat lp_coeff, hp_coeff, lp_y, hp_y, d;
- ALfloat lp_z1, lp_z2, hp_z1;
- ALsizei i;
-
ASSUME(count > 0);
- hp_coeff = splitter->coeff;
- lp_coeff = splitter->coeff*0.5f + 0.5f;
- lp_z1 = splitter->lp_z1;
- lp_z2 = splitter->lp_z2;
- hp_z1 = splitter->hp_z1;
- for(i = 0;i < count;i++)
+ const float ap_coeff{splitter->coeff};
+ const float lp_coeff{splitter->coeff*0.5f + 0.5f};
+ float lp_z1{splitter->lp_z1};
+ float lp_z2{splitter->lp_z2};
+ float ap_z1{splitter->hp_z1};
+ auto proc_sample = [ap_coeff,lp_coeff,&lp_z1,&lp_z2,&ap_z1,&lpout](const float in) noexcept -> float
{
- ALfloat in = input[i];
-
/* Low-pass sample processing. */
- d = (in - lp_z1) * lp_coeff;
- lp_y = lp_z1 + d;
+ float d{(in - lp_z1) * lp_coeff};
+ float lp_y{lp_z1 + d};
lp_z1 = lp_y + d;
d = (lp_y - lp_z2) * lp_coeff;
lp_y = lp_z2 + d;
lp_z2 = lp_y + d;
- lpout[i] = lp_y;
+ *(lpout++) = lp_y;
/* All-pass sample processing. */
- hp_y = in*hp_coeff + hp_z1;
- hp_z1 = in - hp_y*hp_coeff;
+ float ap_y{in*ap_coeff + ap_z1};
+ ap_z1 = in - ap_y*ap_coeff;
/* High-pass generated from removing low-passed output. */
- hpout[i] = hp_y - lp_y;
- }
+ return ap_y - lp_y;
+ };
+ std::transform<const float*RESTRICT>(input, input+count, hpout, proc_sample);
splitter->lp_z1 = lp_z1;
splitter->lp_z2 = lp_z2;
- splitter->hp_z1 = hp_z1;
+ splitter->hp_z1 = ap_z1;
}
void splitterap_init(SplitterAllpass *splitter, ALfloat f0norm)
{
ALfloat w = f0norm * F_TAU;
- ALfloat cw = cosf(w);
+ ALfloat cw = std::cos(w);
if(cw > FLT_EPSILON)
- splitter->coeff = (sinf(w) - 1.0f) / cw;
+ splitter->coeff = (std::sin(w) - 1.0f) / cw;
else
splitter->coeff = cw * -0.5f;
@@ -88,22 +86,16 @@ void splitterap_clear(SplitterAllpass *splitter)
void splitterap_process(SplitterAllpass *splitter, ALfloat *RESTRICT samples, ALsizei count)
{
- ALfloat coeff, in, out;
- ALfloat z1;
- ALsizei i;
-
ASSUME(count > 0);
- coeff = splitter->coeff;
- z1 = splitter->z1;
- for(i = 0;i < count;i++)
+ const float coeff{splitter->coeff};
+ float z1{splitter->z1};
+ auto proc_sample = [coeff,&z1](const float in) noexcept -> float
{
- in = samples[i];
-
- out = in*coeff + z1;
+ float out{in*coeff + z1};
z1 = in - out*coeff;
-
- samples[i] = out;
- }
+ return out;
+ };
+ std::transform(samples, samples+count, samples, proc_sample);
splitter->z1 = z1;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 07:05:28 +0000