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A bit more cleanup

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This commit is contained in:
Chris Robinson
2018-12-10 21:30:22 -08:00
parent ed18fd76c5
commit e87eb07db4
4 changed files with 113 additions and 132 deletions
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Alc/bformatdec.cpp
+34 -83
View File
@@ -17,49 +17,9 @@
#include "almalloc.h"
/* NOTE: These are scale factors as applied to Ambisonics content. Decoder
* coefficients should be divided by these values to get proper N3D scalings.
*/
const ALfloat N3D2N3DScale[MAX_AMBI_COEFFS] = {
1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f
};
const ALfloat SN3D2N3DScale[MAX_AMBI_COEFFS] = {
1.000000000f, /* ACN 0 (W), sqrt(1) */
1.732050808f, /* ACN 1 (Y), sqrt(3) */
1.732050808f, /* ACN 2 (Z), sqrt(3) */
1.732050808f, /* ACN 3 (X), sqrt(3) */
2.236067978f, /* ACN 4 (V), sqrt(5) */
2.236067978f, /* ACN 5 (T), sqrt(5) */
2.236067978f, /* ACN 6 (R), sqrt(5) */
2.236067978f, /* ACN 7 (S), sqrt(5) */
2.236067978f, /* ACN 8 (U), sqrt(5) */
2.645751311f, /* ACN 9 (Q), sqrt(7) */
2.645751311f, /* ACN 10 (O), sqrt(7) */
2.645751311f, /* ACN 11 (M), sqrt(7) */
2.645751311f, /* ACN 12 (K), sqrt(7) */
2.645751311f, /* ACN 13 (L), sqrt(7) */
2.645751311f, /* ACN 14 (N), sqrt(7) */
2.645751311f, /* ACN 15 (P), sqrt(7) */
};
const ALfloat FuMa2N3DScale[MAX_AMBI_COEFFS] = {
1.414213562f, /* ACN 0 (W), sqrt(2) */
1.732050808f, /* ACN 1 (Y), sqrt(3) */
1.732050808f, /* ACN 2 (Z), sqrt(3) */
1.732050808f, /* ACN 3 (X), sqrt(3) */
1.936491673f, /* ACN 4 (V), sqrt(15)/2 */
1.936491673f, /* ACN 5 (T), sqrt(15)/2 */
2.236067978f, /* ACN 6 (R), sqrt(5) */
1.936491673f, /* ACN 7 (S), sqrt(15)/2 */
1.936491673f, /* ACN 8 (U), sqrt(15)/2 */
2.091650066f, /* ACN 9 (Q), sqrt(35/8) */
1.972026594f, /* ACN 10 (O), sqrt(35)/3 */
2.231093404f, /* ACN 11 (M), sqrt(224/45) */
2.645751311f, /* ACN 12 (K), sqrt(7) */
2.231093404f, /* ACN 13 (L), sqrt(224/45) */
1.972026594f, /* ACN 14 (N), sqrt(35)/3 */
2.091650066f, /* ACN 15 (P), sqrt(35/8) */
};
constexpr float AmbiScale::N3D2N3D[MAX_AMBI_COEFFS];
constexpr float AmbiScale::SN3D2N3D[MAX_AMBI_COEFFS];
constexpr float AmbiScale::FuMa2N3D[MAX_AMBI_COEFFS];
namespace {
@@ -114,10 +74,7 @@ ALsizei GetACNIndex(const BFChannelConfig *chans, ALsizei numchans, ALsizei acn)
void BFormatDec::reset(const AmbDecConf *conf, ALsizei chancount, ALuint srate, const ALsizei (&chanmap)[MAX_OUTPUT_CHANNELS])
{
static constexpr ALsizei map2DTo3D[MAX_AMBI2D_COEFFS] = {
0, 1, 3, 4, 8, 9, 15
};
const ALfloat *coeff_scale = N3D2N3DScale;
static constexpr ALsizei map2DTo3D[MAX_AMBI2D_COEFFS]{ 0, 1, 3, 4, 8, 9, 15 };
mSamples.clear();
mSamplesHF = nullptr;
@@ -133,11 +90,6 @@ void BFormatDec::reset(const AmbDecConf *conf, ALsizei chancount, ALuint srate,
{ return mask | (1 << chan); }
);
if(conf->CoeffScale == AmbDecScale::SN3D)
coeff_scale = SN3D2N3DScale;
else if(conf->CoeffScale == AmbDecScale::FuMa)
coeff_scale = FuMa2N3DScale;
mUpSampler[0].XOver.init(400.0f / (float)srate);
std::fill(std::begin(mUpSampler[0].Gains), std::end(mUpSampler[0].Gains), 0.0f);
std::fill(std::begin(mUpSampler)+1, std::end(mUpSampler), mUpSampler[0]);
@@ -170,23 +122,25 @@ void BFormatDec::reset(const AmbDecConf *conf, ALsizei chancount, ALuint srate,
mUpSampler[3].Gains[LF_BAND] = 0.0f;
}
const ALfloat (&coeff_scale)[MAX_AMBI_COEFFS] =
(conf->CoeffScale == AmbDecScale::FuMa) ? AmbiScale::FuMa2N3D :
(conf->CoeffScale == AmbDecScale::SN3D) ? AmbiScale::SN3D2N3D :
/*(conf->CoeffScale == AmbDecScale::N3D) ?*/ AmbiScale::N3D2N3D;
mMatrix = MatrixU{};
if(conf->FreqBands == 1)
{
mDualBand = AL_FALSE;
for(ALsizei i{0};i < conf->NumSpeakers;i++)
{
ALsizei chan = chanmap[i];
ALfloat gain;
ALsizei j, k;
const ALsizei chan{chanmap[i]};
if(!periphonic)
{
for(j = 0,k = 0;j < MAX_AMBI2D_COEFFS;j++)
ALfloat gain{conf->HFOrderGain[0]};
for(ALsizei j{0},k{0};j < MAX_AMBI2D_COEFFS;j++)
{
ALsizei l = map2DTo3D[j];
if(j == 0) gain = conf->HFOrderGain[0];
else if(j == 1) gain = conf->HFOrderGain[1];
const ALsizei l{map2DTo3D[j]};
if(j == 1) gain = conf->HFOrderGain[1];
else if(j == 3) gain = conf->HFOrderGain[2];
else if(j == 5) gain = conf->HFOrderGain[3];
if((conf->ChanMask&(1<<l)))
@@ -195,10 +149,10 @@ void BFormatDec::reset(const AmbDecConf *conf, ALsizei chancount, ALuint srate,
}
else
{
for(j = 0,k = 0;j < MAX_AMBI_COEFFS;j++)
ALfloat gain{conf->HFOrderGain[0]};
for(ALsizei j{0},k{0};j < MAX_AMBI_COEFFS;j++)
{
if(j == 0) gain = conf->HFOrderGain[0];
else if(j == 1) gain = conf->HFOrderGain[1];
if(j == 1) gain = conf->HFOrderGain[1];
else if(j == 4) gain = conf->HFOrderGain[2];
else if(j == 9) gain = conf->HFOrderGain[3];
if((conf->ChanMask&(1<<j)))
@@ -214,30 +168,28 @@ void BFormatDec::reset(const AmbDecConf *conf, ALsizei chancount, ALuint srate,
mXOver[0].init(conf->XOverFreq / (float)srate);
std::fill(std::begin(mXOver)+1, std::end(mXOver), mXOver[0]);
float ratio{std::pow(10.0f, conf->XOverRatio / 40.0f)};
const float ratio{std::pow(10.0f, conf->XOverRatio / 40.0f)};
for(ALsizei i{0};i < conf->NumSpeakers;i++)
{
ALsizei chan = chanmap[i];
ALfloat gain{};
const ALsizei chan{chanmap[i]};
if(!periphonic)
{
ALfloat gain{conf->HFOrderGain[0] * ratio};
for(ALsizei j{0},k{0};j < MAX_AMBI2D_COEFFS;j++)
{
ALsizei l = map2DTo3D[j];
if(j == 0) gain = conf->HFOrderGain[0] * ratio;
else if(j == 1) gain = conf->HFOrderGain[1] * ratio;
if(j == 1) gain = conf->HFOrderGain[1] * ratio;
else if(j == 3) gain = conf->HFOrderGain[2] * ratio;
else if(j == 5) gain = conf->HFOrderGain[3] * ratio;
if((conf->ChanMask&(1<<l)))
mMatrix.Dual[chan][HF_BAND][j] = conf->HFMatrix[i][k++] / coeff_scale[l] *
gain;
}
gain = conf->HFOrderGain[0] / ratio;
for(ALsizei j{0},k{0};j < MAX_AMBI2D_COEFFS;j++)
{
ALsizei l = map2DTo3D[j];
if(j == 0) gain = conf->LFOrderGain[0] / ratio;
else if(j == 1) gain = conf->LFOrderGain[1] / ratio;
if(j == 1) gain = conf->LFOrderGain[1] / ratio;
else if(j == 3) gain = conf->LFOrderGain[2] / ratio;
else if(j == 5) gain = conf->LFOrderGain[3] / ratio;
if((conf->ChanMask&(1<<l)))
@@ -247,20 +199,20 @@ void BFormatDec::reset(const AmbDecConf *conf, ALsizei chancount, ALuint srate,
}
else
{
ALfloat gain{conf->HFOrderGain[0] * ratio};
for(ALsizei j{0},k{0};j < MAX_AMBI_COEFFS;j++)
{
if(j == 0) gain = conf->HFOrderGain[0] * ratio;
else if(j == 1) gain = conf->HFOrderGain[1] * ratio;
if(j == 1) gain = conf->HFOrderGain[1] * ratio;
else if(j == 4) gain = conf->HFOrderGain[2] * ratio;
else if(j == 9) gain = conf->HFOrderGain[3] * ratio;
if((conf->ChanMask&(1<<j)))
mMatrix.Dual[chan][HF_BAND][j] = conf->HFMatrix[i][k++] / coeff_scale[j] *
gain;
}
gain = conf->HFOrderGain[0] / ratio;
for(ALsizei j{0},k{0};j < MAX_AMBI_COEFFS;j++)
{
if(j == 0) gain = conf->LFOrderGain[0] / ratio;
else if(j == 1) gain = conf->LFOrderGain[1] / ratio;
if(j == 1) gain = conf->LFOrderGain[1] / ratio;
else if(j == 4) gain = conf->LFOrderGain[2] / ratio;
else if(j == 9) gain = conf->LFOrderGain[3] / ratio;
if((conf->ChanMask&(1<<j)))
@@ -277,14 +229,13 @@ void BFormatDec::process(ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE], const ALsize
ASSUME(OutChannels > 0);
ASSUME(SamplesToDo > 0);
ALsizei chan, i;
if(mDualBand)
{
for(i = 0;i < mNumChannels;i++)
for(ALsizei i{0};i < mNumChannels;i++)
mXOver[i].process(mSamplesHF[i].data(), mSamplesLF[i].data(), InSamples[i],
SamplesToDo);
for(chan = 0;chan < OutChannels;chan++)
for(ALsizei chan{0};chan < OutChannels;chan++)
{
if(UNLIKELY(!(mEnabled&(1<<chan))))
continue;
@@ -305,7 +256,7 @@ void BFormatDec::process(ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE], const ALsize
}
else
{
for(chan = 0;chan < OutChannels;chan++)
for(ALsizei chan{0};chan < OutChannels;chan++)
{
if(UNLIKELY(!(mEnabled&(1<<chan))))
continue;
@@ -364,7 +315,7 @@ void AmbiUpsampler::reset(const ALCdevice *device, const ALfloat w_scale, const
ALfloat encgains[8][MAX_OUTPUT_CHANNELS];
for(size_t k{0u};k < COUNTOF(Ambi3DPoints);k++)
{
ALfloat coeffs[MAX_AMBI_COEFFS] = { 0.0f };
ALfloat coeffs[MAX_AMBI_COEFFS];
CalcDirectionCoeffs(Ambi3DPoints[k], 0.0f, coeffs);
ComputePanGains(&device->Dry, coeffs, 1.0f, encgains[k]);
}
@@ -378,7 +329,7 @@ void AmbiUpsampler::reset(const ALCdevice *device, const ALfloat w_scale, const
{
for(ALsizei j{0};j < device->Dry.NumChannels;j++)
{
ALdouble gain = 0.0;
ALdouble gain{0.0};
for(size_t k{0u};k < COUNTOF(Ambi3DDecoder);k++)
gain += (ALdouble)Ambi3DDecoder[k][i] * encgains[k][j];
mGains[i][j][HF_BAND] = (ALfloat)(gain * Ambi3DDecoderHFScale[i]);
@@ -390,10 +341,10 @@ void AmbiUpsampler::reset(const ALCdevice *device, const ALfloat w_scale, const
{
for(ALsizei i{0};i < 4;i++)
{
ALsizei index = GetChannelForACN(device->Dry, i);
const ALsizei index{GetChannelForACN(device->Dry, i)};
if(index != INVALID_UPSAMPLE_INDEX)
{
ALfloat scale = device->Dry.Ambi.Map[index].Scale;
const ALfloat scale{device->Dry.Ambi.Map[index].Scale};
mGains[i][index][HF_BAND] = scale * ((i==0) ? w_scale : xyz_scale);
mGains[i][index][LF_BAND] = scale;
}
Alc/bformatdec.h
+42 -3
View File
@@ -29,9 +29,48 @@ struct AmbDecConf;
/* NOTE: These are scale factors as applied to Ambisonics content. Decoder
* coefficients should be divided by these values to get proper N3D scalings.
*/
extern const ALfloat N3D2N3DScale[MAX_AMBI_COEFFS];
extern const ALfloat SN3D2N3DScale[MAX_AMBI_COEFFS];
extern const ALfloat FuMa2N3DScale[MAX_AMBI_COEFFS];
struct AmbiScale {
static constexpr float N3D2N3D[MAX_AMBI_COEFFS]{
1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f
};
static constexpr float SN3D2N3D[MAX_AMBI_COEFFS]{
1.000000000f, /* ACN 0 (W), sqrt(1) */
1.732050808f, /* ACN 1 (Y), sqrt(3) */
1.732050808f, /* ACN 2 (Z), sqrt(3) */
1.732050808f, /* ACN 3 (X), sqrt(3) */
2.236067978f, /* ACN 4 (V), sqrt(5) */
2.236067978f, /* ACN 5 (T), sqrt(5) */
2.236067978f, /* ACN 6 (R), sqrt(5) */
2.236067978f, /* ACN 7 (S), sqrt(5) */
2.236067978f, /* ACN 8 (U), sqrt(5) */
2.645751311f, /* ACN 9 (Q), sqrt(7) */
2.645751311f, /* ACN 10 (O), sqrt(7) */
2.645751311f, /* ACN 11 (M), sqrt(7) */
2.645751311f, /* ACN 12 (K), sqrt(7) */
2.645751311f, /* ACN 13 (L), sqrt(7) */
2.645751311f, /* ACN 14 (N), sqrt(7) */
2.645751311f, /* ACN 15 (P), sqrt(7) */
};
static constexpr float FuMa2N3D[MAX_AMBI_COEFFS]{
1.414213562f, /* ACN 0 (W), sqrt(2) */
1.732050808f, /* ACN 1 (Y), sqrt(3) */
1.732050808f, /* ACN 2 (Z), sqrt(3) */
1.732050808f, /* ACN 3 (X), sqrt(3) */
1.936491673f, /* ACN 4 (V), sqrt(15)/2 */
1.936491673f, /* ACN 5 (T), sqrt(15)/2 */
2.236067978f, /* ACN 6 (R), sqrt(5) */
1.936491673f, /* ACN 7 (S), sqrt(15)/2 */
1.936491673f, /* ACN 8 (U), sqrt(15)/2 */
2.091650066f, /* ACN 9 (Q), sqrt(35/8) */
1.972026594f, /* ACN 10 (O), sqrt(35)/3 */
2.231093404f, /* ACN 11 (M), sqrt(224/45) */
2.645751311f, /* ACN 12 (K), sqrt(7) */
2.231093404f, /* ACN 13 (L), sqrt(224/45) */
1.972026594f, /* ACN 14 (N), sqrt(35)/3 */
2.091650066f, /* ACN 15 (P), sqrt(35/8) */
};
};
class BFormatDec {
Alc/panning.cpp
+35 -44
View File
@@ -26,6 +26,7 @@
#include <ctype.h>
#include <assert.h>
#include <cmath>
#include <numeric>
#include <algorithm>
#include <functional>
@@ -398,12 +399,13 @@ void InitPanning(ALCdevice *device)
if(device->FmtChans == DevFmtAmbi3D)
{
const char *devname = device->DeviceName.c_str();
const ALsizei *acnmap = (device->mAmbiLayout == AmbiLayout::FuMa) ? FuMa2ACN : ACN2ACN;
const ALfloat *n3dscale = (device->mAmbiScale == AmbiNorm::FuMa) ? FuMa2N3DScale :
(device->mAmbiScale == AmbiNorm::SN3D) ? SN3D2N3DScale :
/*(device->mAmbiScale == AmbiNorm::N3D) ?*/ N3D2N3DScale;
ALfloat nfc_delay = 0.0f;
const char *devname{device->DeviceName.c_str()};
const ALsizei (&acnmap)[MAX_AMBI_COEFFS] =
(device->mAmbiLayout == AmbiLayout::FuMa) ? FuMa2ACN : ACN2ACN;
const ALfloat (&n3dscale)[MAX_AMBI_COEFFS] =
(device->mAmbiScale == AmbiNorm::FuMa) ? AmbiScale::FuMa2N3D :
(device->mAmbiScale == AmbiNorm::SN3D) ? AmbiScale::SN3D2N3D :
/*(device->mAmbiScale == AmbiNorm::N3D) ?*/ AmbiScale::N3D2N3D;
count = (device->mAmbiOrder == 3) ? 16 :
(device->mAmbiOrder == 2) ? 9 :
@@ -425,8 +427,6 @@ void InitPanning(ALCdevice *device)
}
else
{
ALfloat w_scale=1.0f, xyz_scale=1.0f;
/* FOA output is always ACN+N3D for higher-order ambisonic output.
* The upsampler expects this and will convert it for output.
*/
@@ -439,6 +439,7 @@ void InitPanning(ALCdevice *device)
device->FOAOut.CoeffCount = 0;
device->FOAOut.NumChannels = 4;
ALfloat w_scale{1.0f}, xyz_scale{1.0f};
if(device->mAmbiOrder >= 3)
{
w_scale = W_SCALE_3H3P;
@@ -452,11 +453,10 @@ void InitPanning(ALCdevice *device)
device->AmbiUp->reset(device, w_scale, xyz_scale);
}
ALfloat nfc_delay{0.0f};
if(ConfigValueFloat(devname, "decoder", "nfc-ref-delay", &nfc_delay) && nfc_delay > 0.0f)
{
static const ALsizei chans_per_order[MAX_AMBI_ORDER+1] = {
1, 3, 5, 7
};
static constexpr ALsizei chans_per_order[MAX_AMBI_ORDER+1]{ 1, 3, 5, 7 };
nfc_delay = clampf(nfc_delay, 0.001f, 1000.0f);
InitNearFieldCtrl(device, nfc_delay * SPEEDOFSOUNDMETRESPERSEC,
device->mAmbiOrder, chans_per_order);
@@ -464,16 +464,14 @@ void InitPanning(ALCdevice *device)
}
else
{
ALfloat w_scale, xyz_scale;
SetChannelMap(device->RealOut.ChannelName, device->Dry.Ambi.Coeffs,
chanmap, count, &device->Dry.NumChannels);
device->Dry.CoeffCount = coeffcount;
w_scale = (device->Dry.CoeffCount > 9) ? W_SCALE_3H0P :
(device->Dry.CoeffCount > 4) ? W_SCALE_2H0P : 1.0f;
xyz_scale = (device->Dry.CoeffCount > 9) ? XYZ_SCALE_3H0P :
(device->Dry.CoeffCount > 4) ? XYZ_SCALE_2H0P : 1.0f;
const ALfloat w_scale{(device->Dry.CoeffCount > 9) ? W_SCALE_3H0P :
(device->Dry.CoeffCount > 4) ? W_SCALE_2H0P : 1.0f};
const ALfloat xyz_scale{(device->Dry.CoeffCount > 9) ? XYZ_SCALE_3H0P :
(device->Dry.CoeffCount > 4) ? XYZ_SCALE_2H0P : 1.0f};
device->FOAOut.Ambi = AmbiConfig{};
for(i = 0;i < device->Dry.NumChannels;i++)
@@ -490,16 +488,11 @@ void InitPanning(ALCdevice *device)
void InitCustomPanning(ALCdevice *device, const AmbDecConf *conf, const ALsizei (&speakermap)[MAX_OUTPUT_CHANNELS])
{
ChannelMap chanmap[MAX_OUTPUT_CHANNELS];
const ALfloat *coeff_scale = N3D2N3DScale;
ALfloat w_scale = 1.0f;
ALfloat xyz_scale = 1.0f;
ALsizei i, j;
if(conf->FreqBands != 1)
ERR("Basic renderer uses the high-frequency matrix as single-band (xover_freq = %.0fhz)\n",
conf->XOverFreq);
ALfloat w_scale{1.0f}, xyz_scale{1.0f};
if((conf->ChanMask&AMBI_PERIPHONIC_MASK))
{
if(conf->ChanMask > 0x1ff)
@@ -527,25 +520,23 @@ void InitCustomPanning(ALCdevice *device, const AmbDecConf *conf, const ALsizei
}
}
if(conf->CoeffScale == AmbDecScale::SN3D)
coeff_scale = SN3D2N3DScale;
else if(conf->CoeffScale == AmbDecScale::FuMa)
coeff_scale = FuMa2N3DScale;
for(i = 0;i < conf->NumSpeakers;i++)
const ALfloat (&coeff_scale)[MAX_AMBI_COEFFS] =
(conf->CoeffScale == AmbDecScale::FuMa) ? AmbiScale::FuMa2N3D :
(conf->CoeffScale == AmbDecScale::SN3D) ? AmbiScale::SN3D2N3D :
/*(conf->CoeffScale == AmbDecScale::N3D) ?*/ AmbiScale::N3D2N3D;
ChannelMap chanmap[MAX_OUTPUT_CHANNELS]{};
for(ALsizei i{0};i < conf->NumSpeakers;i++)
{
ALsizei chan = speakermap[i];
ALfloat gain;
ALsizei k = 0;
for(j = 0;j < MAX_AMBI_COEFFS;j++)
chanmap[i].Config[j] = 0.0f;
const ALsizei chan{speakermap[i]};
chanmap[i].ChanName = device->RealOut.ChannelName[chan];
for(j = 0;j < MAX_AMBI_COEFFS;j++)
std::fill(std::begin(chanmap[i].Config), std::end(chanmap[i].Config), 0.0f);
ALsizei k{0};
ALfloat gain{conf->HFOrderGain[0]};
for(ALsizei j{0};j < MAX_AMBI_COEFFS;j++)
{
if(j == 0) gain = conf->HFOrderGain[0];
else if(j == 1) gain = conf->HFOrderGain[1];
if(j == 1) gain = conf->HFOrderGain[1];
else if(j == 4) gain = conf->HFOrderGain[2];
else if(j == 9) gain = conf->HFOrderGain[3];
if((conf->ChanMask&(1<<j)))
@@ -559,10 +550,10 @@ void InitCustomPanning(ALCdevice *device, const AmbDecConf *conf, const ALsizei
(conf->ChanMask > 0xf) ? 9 : 4;
device->FOAOut.Ambi = AmbiConfig{};
for(i = 0;i < device->Dry.NumChannels;i++)
for(ALsizei i{0};i < device->Dry.NumChannels;i++)
{
device->FOAOut.Ambi.Coeffs[i][0] = device->Dry.Ambi.Coeffs[i][0] * w_scale;
for(j = 1;j < 4;j++)
for(ALsizei j{1};j < 4;j++)
device->FOAOut.Ambi.Coeffs[i][j] = device->Dry.Ambi.Coeffs[i][j] * xyz_scale;
}
device->FOAOut.CoeffCount = 4;
@@ -577,8 +568,8 @@ void InitHQPanning(ALCdevice *device, const AmbDecConf *conf, const ALsizei (&sp
{
static constexpr ALsizei chans_per_order2d[MAX_AMBI_ORDER+1] = { 1, 2, 2, 2 };
static constexpr ALsizei chans_per_order3d[MAX_AMBI_ORDER+1] = { 1, 3, 5, 7 };
ALsizei count;
ALsizei count;
if((conf->ChanMask&AMBI_PERIPHONIC_MASK))
{
static constexpr int map[MAX_AMBI_COEFFS] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
@@ -782,7 +773,7 @@ void InitUhjPanning(ALCdevice *device)
std::transform(std::begin(FuMa2ACN), std::begin(FuMa2ACN)+count, std::begin(device->Dry.Ambi.Map),
[](const ALsizei &acn) noexcept -> BFChannelConfig
{ return BFChannelConfig{1.0f/FuMa2N3DScale[acn], acn}; }
{ return BFChannelConfig{1.0f/AmbiScale::FuMa2N3D[acn], acn}; }
);
device->Dry.CoeffCount = 0;
device->Dry.NumChannels = count;
@@ -847,9 +838,9 @@ void CalcAmbiCoeffs(const ALfloat y, const ALfloat z, const ALfloat x, const ALf
* ZH4 = 0.125f * (ca+1.0f)*(7.0f*ca*ca - 3.0f)*ca;
* ZH5 = 0.0625f * (ca+1.0f)*(21.0f*ca*ca*ca*ca - 14.0f*ca*ca + 1.0f);
*/
ALfloat ca = cosf(spread * 0.5f);
ALfloat ca = std::cos(spread * 0.5f);
/* Increase the source volume by up to +3dB for a full spread. */
ALfloat scale = sqrtf(1.0f + spread/F_TAU);
ALfloat scale = std::sqrt(1.0f + spread/F_TAU);
ALfloat ZH0_norm = scale;
ALfloat ZH1_norm = 0.5f * (ca+1.f) * scale;
OpenAL32/Include/alu.h
+2 -2
View File
@@ -94,8 +94,8 @@ typedef const ALfloat* (*ResamplerFunc)(const InterpState *state,
void BsincPrepare(const ALuint increment, BsincState *state, const struct BSincTable *table);
extern const struct BSincTable bsinc12;
extern const struct BSincTable bsinc24;
extern const BSincTable bsinc12;
extern const BSincTable bsinc24;
enum {