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Don't explicitly store first-order coefficients

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It seems a simple scaling on the coefficients will allow first-order content to
work with second- and third-order coefficients, although obviously not with any
improved locality. That may be something to look into for the future, but this
is good enough for now.
This commit is contained in:
Chris Robinson 2015-08-18 07:44:17 -07:00
parent 53f6590b17
commit 6f59ebab27
2 changed files with 117 additions and 65 deletions
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174
Alc/panning.c
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@ -33,6 +33,11 @@
#include "bool.h"
#define ZERO_ORDER_SCALE 0.0f
#define FIRST_ORDER_SCALE 1.0f
#define SECOND_ORDER_SCALE (1.0f / 1.22474f)
#define THIRD_ORDER_SCALE (1.0f / 1.30657f)
void ComputeAngleGains(const ALCdevice *device, ALfloat angle, ALfloat elevation, ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
{
ALfloat dir[3] = {
@ -74,7 +79,7 @@ void ComputeDirectionalGains(const ALCdevice *device, const ALfloat dir[3], ALfl
for(i = 0;i < device->NumChannels;i++)
{
for(j = 0;j < MAX_AMBI_COEFFS;j++)
gains[i] += device->Channel[i].HOACoeff[j]*coeffs[j];
gains[i] += device->AmbiCoeffs[i][j]*coeffs[j];
gains[i] *= ingain;
}
}
@ -92,7 +97,7 @@ void ComputeAmbientGains(const ALCdevice *device, ALfloat ingain, ALfloat gains[
// scaling the W channel input by sqrt(0.5). The square root of the
// base average provides for a more perceptual average volume, better
// suited to non-directional gains.
gains[i] = sqrtf(device->Channel[i].HOACoeff[0]/1.4142f) * ingain;
gains[i] = sqrtf(device->AmbiCoeffs[i][0]/1.4142f) * ingain;
}
}
@ -104,8 +109,10 @@ void ComputeBFormatGains(const ALCdevice *device, const ALfloat mtx[4], ALfloat
gains[i] = 0.0f;
for(i = 0;i < device->NumChannels;i++)
{
for(j = 0;j < 4;j++)
gains[i] += device->Channel[i].FOACoeff[j] * mtx[j];
float scale = device->AmbiScale;
gains[i] += device->AmbiCoeffs[i][0] * mtx[0];
for(j = 1;j < 4;j++)
gains[i] += device->AmbiCoeffs[i][j] * scale * mtx[j];
gains[i] *= ingain;
}
}
@ -150,18 +157,17 @@ typedef struct ChannelMap {
ChannelConfig Config;
} ChannelMap;
static void SetChannelMap(ALCdevice *device, const ChannelMap *chanmap, size_t count)
static void SetChannelMap(ALCdevice *device, const ChannelMap *chanmap, size_t count, ALfloat ambiscale)
{
size_t i, j;
device->AmbiScale = ambiscale;
for(i = 0;i < MAX_OUTPUT_CHANNELS && device->ChannelName[i] != InvalidChannel;i++)
{
if(device->ChannelName[i] == LFE)
{
for(j = 0;j < MAX_AMBI_COEFFS;j++)
device->Channel[i].HOACoeff[j] = 0.0f;
for(j = 0;j < 4;j++)
device->Channel[i].FOACoeff[j] = 0.0f;
device->AmbiCoeffs[i][j] = 0.0f;
continue;
}
@ -169,7 +175,9 @@ static void SetChannelMap(ALCdevice *device, const ChannelMap *chanmap, size_t c
{
if(device->ChannelName[i] == chanmap[j].ChanName)
{
device->Channel[i] = chanmap[j].Config;
size_t k;
for(k = 0;k < MAX_AMBI_COEFFS;++k)
device->AmbiCoeffs[i][k] = chanmap[j].Config[k];
break;
}
}
@ -206,7 +214,9 @@ static bool LoadChannelSetup(ALCdevice *device)
ChannelMap chanmap[MAX_OUTPUT_CHANNELS];
const enum Channel *channels = NULL;
const char *layout = NULL;
ALfloat ambiscale = 1.0f;
size_t count = 0;
int order;
size_t i;
switch(device->FmtChans)
@ -255,9 +265,22 @@ static bool LoadChannelSetup(ALCdevice *device)
else
{
char name[32];
snprintf(name, sizeof(name), "%s/enable", layout);
if(!GetConfigValueBool("layouts", name, 0))
snprintf(name, sizeof(name), "%s/order", layout);
if(!ConfigValueInt("layouts", name, &order))
return false;
if(order == 3)
ambiscale = THIRD_ORDER_SCALE;
else if(order == 2)
ambiscale = SECOND_ORDER_SCALE;
else if(order == 1)
ambiscale = FIRST_ORDER_SCALE;
else if(order == 0)
ambiscale = ZERO_ORDER_SCALE;
else
{
ERR("Unhandled order value %d (expected 0, 1, 2, or 3) for layout %s\n", order, name);
return false;
}
}
for(i = 0;i < count;i++)
@ -265,7 +288,9 @@ static bool LoadChannelSetup(ALCdevice *device)
const char *channame;
char chanlayout[32];
const char *value;
int props;
int props = 0;
char eol = 0;
int j;
chanmap[i].ChanName = channels[i];
channame = GetLabelFromChannel(channels[i]);
@ -276,79 +301,99 @@ static bool LoadChannelSetup(ALCdevice *device)
ERR("Missing channel %s\n", channame);
return false;
}
props = sscanf(value, " %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f ; %f %f %f %f",
&chanmap[i].Config.HOACoeff[0], &chanmap[i].Config.HOACoeff[1], &chanmap[i].Config.HOACoeff[2],
&chanmap[i].Config.HOACoeff[3], &chanmap[i].Config.HOACoeff[4], &chanmap[i].Config.HOACoeff[5],
&chanmap[i].Config.HOACoeff[6], &chanmap[i].Config.HOACoeff[7], &chanmap[i].Config.HOACoeff[8],
&chanmap[i].Config.HOACoeff[9], &chanmap[i].Config.HOACoeff[10], &chanmap[i].Config.HOACoeff[11],
&chanmap[i].Config.HOACoeff[12], &chanmap[i].Config.HOACoeff[13], &chanmap[i].Config.HOACoeff[14],
&chanmap[i].Config.HOACoeff[15], &chanmap[i].Config.FOACoeff[0], &chanmap[i].Config.FOACoeff[1],
&chanmap[i].Config.FOACoeff[2], &chanmap[i].Config.FOACoeff[3]);
if(order == 3)
props = sscanf(value, " %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f %c",
&chanmap[i].Config[0], &chanmap[i].Config[1], &chanmap[i].Config[2],
&chanmap[i].Config[3], &chanmap[i].Config[4], &chanmap[i].Config[5],
&chanmap[i].Config[6], &chanmap[i].Config[7], &chanmap[i].Config[8],
&chanmap[i].Config[9], &chanmap[i].Config[10], &chanmap[i].Config[11],
&chanmap[i].Config[12], &chanmap[i].Config[13], &chanmap[i].Config[14],
&chanmap[i].Config[15], &eol
);
else if(order == 2)
props = sscanf(value, " %f %f %f %f %f %f %f %f %f %c",
&chanmap[i].Config[0], &chanmap[i].Config[1], &chanmap[i].Config[2],
&chanmap[i].Config[3], &chanmap[i].Config[4], &chanmap[i].Config[5],
&chanmap[i].Config[6], &chanmap[i].Config[7], &chanmap[i].Config[8],
&eol
);
else if(order == 1)
props = sscanf(value, " %f %f %f %f %c",
&chanmap[i].Config[0], &chanmap[i].Config[1], &chanmap[i].Config[2],
&chanmap[i].Config[3], &eol
);
else if(order == 0)
props = sscanf(value, " %f %c", &chanmap[i].Config[0], &eol);
if(props == 0)
{
ERR("Failed to parse %s channel's properties\n", channame);
return false;
}
if(props < 20)
if(props > (order+1)*(order+1))
{
ERR("Failed to parse %s channel's elements (expected 20, got %d)\n", channame, props);
ERR("Excess elements in %s channel %s (expected %d)\n", layout, channame, (order+1)*(order+1));
return false;
}
for(j = props;j < 16;++j)
chanmap[i].Config[j] = 0.0f;
}
SetChannelMap(device, chanmap, count);
SetChannelMap(device, chanmap, count, ambiscale);
return true;
}
ALvoid aluInitPanning(ALCdevice *device)
{
static const ChannelMap MonoCfg[1] = {
{ FrontCenter, { { 1.4142f }, { 1.4142f } } },
{ FrontCenter, { 1.4142f } },
}, StereoCfg[2] = {
{ FrontLeft, { { 0.7071f, 0.0f, 0.5f, 0.0f }, { 0.7071f, 0.0f, 0.5f, 0.0f } } },
{ FrontRight, { { 0.7071f, 0.0f, -0.5f, 0.0f }, { 0.7071f, 0.0f, -0.5f, 0.0f } } },
{ FrontLeft, { 0.7071f, 0.0f, 0.5f, 0.0f } },
{ FrontRight, { 0.7071f, 0.0f, -0.5f, 0.0f } },
}, QuadCfg[4] = {
{ FrontLeft, { { 0.353558f, 0.306181f, 0.306192f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, 0.117183f }, { 0.353553f, 0.250000f, 0.250000f, 0.0f } } },
{ FrontRight, { { 0.353558f, 0.306181f, -0.306192f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, -0.117183f }, { 0.353553f, 0.250000f, -0.250000f, 0.0f } } },
{ BackLeft, { { 0.353543f, -0.306192f, 0.306181f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, -0.117193f }, { 0.353553f, -0.250000f, 0.250000f, 0.0f } } },
{ BackRight, { { 0.353543f, -0.306192f, -0.306181f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, 0.117193f }, { 0.353553f, -0.250000f, -0.250000f, 0.0f } } },
{ FrontLeft, { 0.353553f, 0.306184f, 0.306184f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, 0.117186f } },
{ FrontRight, { 0.353553f, 0.306184f, -0.306184f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, -0.117186f } },
{ BackLeft, { 0.353553f, -0.306184f, 0.306184f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, -0.117186f } },
{ BackRight, { 0.353553f, -0.306184f, -0.306184f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, 0.117186f } },
}, X51SideCfg[5] = {
{ FrontLeft, { { 0.208954f, 0.212846f, 0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f, 0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f, 0.047490f }, { 0.208954f, 0.162905f, 0.182425f, 0.0f } } },
{ FrontRight, { { 0.208954f, 0.212846f, -0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f, -0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f, -0.047490f }, { 0.208954f, 0.162905f, -0.182425f, 0.0f } } },
{ FrontCenter, { { 0.109403f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f, 0.000000f }, { 0.109403f, 0.137375f, 0.000000f, 0.0f } } },
{ SideLeft, { { 0.470936f, -0.369626f, 0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f, -0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f, -0.043968f }, { 0.470934f, -0.282903f, 0.267406f, 0.0f } } },
{ SideRight, { { 0.470936f, -0.369626f, -0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f, 0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f, 0.043968f }, { 0.470934f, -0.282903f, -0.267406f, 0.0f } } },
{ FrontLeft, { 0.208954f, 0.212846f, 0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f, 0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f, 0.047490f } },
{ FrontRight, { 0.208954f, 0.212846f, -0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f, -0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f, -0.047490f } },
{ FrontCenter, { 0.109403f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f, 0.000000f } },
{ SideLeft, { 0.470936f, -0.369626f, 0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f, -0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f, -0.043968f } },
{ SideRight, { 0.470936f, -0.369626f, -0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f, 0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f, 0.043968f } },
}, X51RearCfg[5] = {
{ FrontLeft, { { 0.208954f, 0.212846f, 0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f, 0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f, 0.047490f }, { 0.208954f, 0.162905f, 0.182425f, 0.0f } } },
{ FrontRight, { { 0.208954f, 0.212846f, -0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f, -0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f, -0.047490f }, { 0.208954f, 0.162905f, -0.182425f, 0.0f } } },
{ FrontCenter, { { 0.109403f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f, 0.000000f }, { 0.109403f, 0.137375f, 0.000000f, 0.0f } } },
{ BackLeft, { { 0.470936f, -0.369626f, 0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f, -0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f, -0.043968f }, { 0.470934f, -0.282903f, 0.267406f, 0.0f } } },
{ BackRight, { { 0.470936f, -0.369626f, -0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f, 0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f, 0.043968f }, { 0.470934f, -0.282903f, -0.267406f, 0.0f } } },
{ FrontLeft, { 0.208954f, 0.212846f, 0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f, 0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f, 0.047490f } },
{ FrontRight, { 0.208954f, 0.212846f, -0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f, -0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f, -0.047490f } },
{ FrontCenter, { 0.109403f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f, 0.000000f } },
{ BackLeft, { 0.470936f, -0.369626f, 0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f, -0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f, -0.043968f } },
{ BackRight, { 0.470936f, -0.369626f, -0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f, 0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f, 0.043968f } },
}, X61Cfg[6] = {
{ FrontLeft, { { 0.167065f, 0.200583f, 0.172695f, 0.0f, 0.0f, 0.0f, 0.0f, 0.029855f, 0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, 0.068910f }, { 0.167065f, 0.153519f, 0.132175f, 0.0f } } },
{ FrontRight, { { 0.167065f, 0.200583f, -0.172695f, 0.0f, 0.0f, 0.0f, 0.0f, 0.029855f, -0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, -0.068910f }, { 0.167065f, 0.153519f, -0.132175f, 0.0f } } },
{ FrontCenter, { { 0.109403f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f, 0.000000f }, { 0.109403f, 0.137375f, 0.000000f, 0.0f } } },
{ BackCenter, { { 0.353556f, -0.461940f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.165723f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, 0.000000f }, { 0.353556f, -0.353554f, 0.000000f, 0.0f } } },
{ SideLeft, { { 0.289151f, -0.081301f, 0.401292f, 0.0f, 0.0f, 0.0f, 0.0f, -0.188208f, -0.071420f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.010099f, -0.032897f }, { 0.289151f, -0.062225f, 0.307136f, 0.0f } } },
{ SideRight, { { 0.289151f, -0.081301f, -0.401292f, 0.0f, 0.0f, 0.0f, 0.0f, -0.188208f, 0.071420f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.010099f, 0.032897f }, { 0.289151f, -0.062225f, -0.307136f, 0.0f } } },
{ FrontLeft, { 0.167065f, 0.200583f, 0.172695f, 0.0f, 0.0f, 0.0f, 0.0f, 0.029855f, 0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, 0.068910f } },
{ FrontRight, { 0.167065f, 0.200583f, -0.172695f, 0.0f, 0.0f, 0.0f, 0.0f, 0.029855f, -0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, -0.068910f } },
{ FrontCenter, { 0.109403f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f, 0.000000f } },
{ BackCenter, { 0.353556f, -0.461940f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.165723f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, 0.000000f } },
{ SideLeft, { 0.289151f, -0.081301f, 0.401292f, 0.0f, 0.0f, 0.0f, 0.0f, -0.188208f, -0.071420f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.010099f, -0.032897f } },
{ SideRight, { 0.289151f, -0.081301f, -0.401292f, 0.0f, 0.0f, 0.0f, 0.0f, -0.188208f, 0.071420f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.010099f, 0.032897f } },
}, X71Cfg[7] = {
{ FrontLeft, { { 0.167065f, 0.200583f, 0.172695f, 0.0f, 0.0f, 0.0f, 0.0f, 0.029855f, 0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, 0.068910f }, { 0.167065f, 0.153519f, 0.132175f, 0.0f } } },
{ FrontRight, { { 0.167065f, 0.200583f, -0.172695f, 0.0f, 0.0f, 0.0f, 0.0f, 0.029855f, -0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, -0.068910f }, { 0.167065f, 0.153519f, -0.132175f, 0.0f } } },
{ FrontCenter, { { 0.109403f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f, 0.000000f }, { 0.109403f, 0.137375f, 0.000000f, 0.0f } } },
{ BackLeft, { { 0.224752f, -0.295009f, 0.170325f, 0.0f, 0.0f, 0.0f, 0.0f, 0.105349f, -0.182473f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, 0.065799f }, { 0.224752f, -0.225790f, 0.130361f, 0.0f } } },
{ BackRight, { { 0.224752f, -0.295009f, -0.170325f, 0.0f, 0.0f, 0.0f, 0.0f, 0.105349f, 0.182473f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, -0.065799f }, { 0.224752f, -0.225790f, -0.130361f, 0.0f } } },
{ SideLeft, { { 0.224739f, 0.000000f, 0.340644f, 0.0f, 0.0f, 0.0f, 0.0f, -0.210697f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, -0.065795f }, { 0.224739f, 0.000000f, 0.260717f, 0.0f } } },
{ SideRight, { { 0.224739f, 0.000000f, -0.340644f, 0.0f, 0.0f, 0.0f, 0.0f, -0.210697f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, 0.065795f }, { 0.224739f, 0.000000f, -0.260717f, 0.0f } } },
{ FrontLeft, { 0.167065f, 0.200583f, 0.172695f, 0.0f, 0.0f, 0.0f, 0.0f, 0.029855f, 0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, 0.068910f } },
{ FrontRight, { 0.167065f, 0.200583f, -0.172695f, 0.0f, 0.0f, 0.0f, 0.0f, 0.029855f, -0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, -0.068910f } },
{ FrontCenter, { 0.109403f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f, 0.000000f } },
{ BackLeft, { 0.224752f, -0.295009f, 0.170325f, 0.0f, 0.0f, 0.0f, 0.0f, 0.105349f, -0.182473f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, 0.065799f } },
{ BackRight, { 0.224752f, -0.295009f, -0.170325f, 0.0f, 0.0f, 0.0f, 0.0f, 0.105349f, 0.182473f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, -0.065799f } },
{ SideLeft, { 0.224739f, 0.000000f, 0.340644f, 0.0f, 0.0f, 0.0f, 0.0f, -0.210697f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, -0.065795f } },
{ SideRight, { 0.224739f, 0.000000f, -0.340644f, 0.0f, 0.0f, 0.0f, 0.0f, -0.210697f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f, 0.065795f } },
}, BFormat3D[4] = {
{ Aux0, { { 1.0f, 0.0f, 0.0f, 0.0f }, { 1.0f, 0.0f, 0.0f, 0.0f } } },
{ Aux1, { { 0.0f, 1.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f, 0.0f } } },
{ Aux2, { { 0.0f, 0.0f, 1.0f, 0.0f }, { 0.0f, 0.0f, 1.0f, 0.0f } } },
{ Aux3, { { 0.0f, 0.0f, 0.0f, 1.0f }, { 0.0f, 0.0f, 0.0f, 1.0f } } },
{ Aux0, { 1.0f, 0.0f, 0.0f, 0.0f } },
{ Aux1, { 0.0f, 1.0f, 0.0f, 0.0f } },
{ Aux2, { 0.0f, 0.0f, 1.0f, 0.0f } },
{ Aux3, { 0.0f, 0.0f, 0.0f, 1.0f } },
};
const ChannelMap *chanmap = NULL;
ALfloat ambiscale = 1.0f;
size_t count = 0;
memset(device->Channel, 0, sizeof(device->Channel));
device->AmbiScale = 1.0f;
memset(device->AmbiCoeffs, 0, sizeof(device->AmbiCoeffs));
device->NumChannels = 0;
if(device->Hrtf)
@ -357,12 +402,13 @@ ALvoid aluInitPanning(ALCdevice *device)
count = COUNTOF(BFormat3D);
chanmap = BFormat3D;
ambiscale = 1.0f;
for(i = 0;i < count;i++)
device->ChannelName[i] = chanmap[i].ChanName;
for(;i < MAX_OUTPUT_CHANNELS;i++)
device->ChannelName[i] = InvalidChannel;
SetChannelMap(device, chanmap, count);
SetChannelMap(device, chanmap, count, ambiscale);
{
ALfloat (*coeffs_list[4])[2] = {
@ -387,43 +433,51 @@ ALvoid aluInitPanning(ALCdevice *device)
case DevFmtMono:
count = COUNTOF(MonoCfg);
chanmap = MonoCfg;
ambiscale = ZERO_ORDER_SCALE;
break;
case DevFmtStereo:
count = COUNTOF(StereoCfg);
chanmap = StereoCfg;
ambiscale = FIRST_ORDER_SCALE;
break;
case DevFmtQuad:
count = COUNTOF(QuadCfg);
chanmap = QuadCfg;
ambiscale = SECOND_ORDER_SCALE;
break;
case DevFmtX51:
count = COUNTOF(X51SideCfg);
chanmap = X51SideCfg;
ambiscale = THIRD_ORDER_SCALE;
break;
case DevFmtX51Rear:
count = COUNTOF(X51RearCfg);
chanmap = X51RearCfg;
ambiscale = THIRD_ORDER_SCALE;
break;
case DevFmtX61:
count = COUNTOF(X61Cfg);
chanmap = X61Cfg;
ambiscale = THIRD_ORDER_SCALE;
break;
case DevFmtX71:
count = COUNTOF(X71Cfg);
chanmap = X71Cfg;
ambiscale = THIRD_ORDER_SCALE;
break;
case DevFmtBFormat3D:
count = COUNTOF(BFormat3D);
chanmap = BFormat3D;
ambiscale = 1.0f;
break;
}
SetChannelMap(device, chanmap, count);
SetChannelMap(device, chanmap, count, ambiscale);
}

8
OpenAL32/Include/alMain.h
View File

@ -626,10 +626,7 @@ enum HrtfMode {
* second-order has 9, and third-order has 16. */
#define MAX_AMBI_COEFFS 16
typedef struct ChannelConfig {
ALfloat HOACoeff[MAX_AMBI_COEFFS];
ALfloat FOACoeff[4];
} ChannelConfig;
typedef ALfloat ChannelConfig[MAX_AMBI_COEFFS];
#define HRTF_HISTORY_BITS (6)
@ -722,7 +719,8 @@ struct ALCdevice_struct
ALuint Flags;
enum Channel ChannelName[MAX_OUTPUT_CHANNELS];
ChannelConfig Channel[MAX_OUTPUT_CHANNELS];
ChannelConfig AmbiCoeffs[MAX_OUTPUT_CHANNELS];
ALfloat AmbiScale; /* Scale for first-order XYZ inputs using AmbCoeffs. */
ALuint NumChannels;
ALuint64 ClockBase;