static ALvoid ALdedicatedState_update(ALdedicatedState *state, ALCdevice *device, const ALeffectslot *Slot)
{
ALfloat Gain;
ALuint i;
for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
state->gains[i] = 0.0f;
Gain = Slot->Gain * Slot->EffectProps.Dedicated.Gain;
if(Slot->EffectType == AL_EFFECT_DEDICATED_LOW_FREQUENCY_EFFECT)
{
int idx;
if((idx=GetChannelIdxByName(device, LFE)) != -1)
state->gains[idx] = Gain;
}
else if(Slot->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, FrontCenter)) != -1)
state->gains[idx] = Gain;
else
{
static const ALfloat front_dir[3] = { 0.0f, 0.0f, -1.0f };
ComputeDirectionalGains(device, front_dir, Gain, state->gains);
}
}
}
static bool MakeSpeakerMap(ALCdevice *device, const AmbDecConf *conf, ALuint speakermap[MAX_OUTPUT_CHANNELS])
{
ALuint i;
for(i = 0;i < conf->NumSpeakers;i++)
{
int c = -1;
/* NOTE: AmbDec does not define any standard speaker names, however
* for this to work we have to by able to find the output channel
* the speaker definition corresponds to. Therefore, OpenAL Soft
* requires these channel labels to be recognized:
*
* LF = Front left
* RF = Front right
* LS = Side left
* RS = Side right
* LB = Back left
* RB = Back right
* CE = Front center
* CB = Back center
*
* Additionally, surround51 will acknowledge back speakers for side
* channels, and surround51rear will acknowledge side speakers for
* back channels, to avoid issues with an ambdec expecting 5.1 to
* use the side channels when the device is configured for back,
* and vice-versa.
*/
if(al_string_cmp_cstr(conf->Speakers[i].Name, "LF") == 0)
c = GetChannelIdxByName(device->RealOut, FrontLeft);
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "RF") == 0)
c = GetChannelIdxByName(device->RealOut, FrontRight);
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "CE") == 0)
c = GetChannelIdxByName(device->RealOut, FrontCenter);
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "LS") == 0)
{
if(device->FmtChans == DevFmtX51Rear)
c = GetChannelIdxByName(device->RealOut, BackLeft);
else
c = GetChannelIdxByName(device->RealOut, SideLeft);
}
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "RS") == 0)
{
if(device->FmtChans == DevFmtX51Rear)
c = GetChannelIdxByName(device->RealOut, BackRight);
else
c = GetChannelIdxByName(device->RealOut, SideRight);
}
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "LB") == 0)
{
if(device->FmtChans == DevFmtX51)
c = GetChannelIdxByName(device->RealOut, SideLeft);
else
c = GetChannelIdxByName(device->RealOut, BackLeft);
}
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "RB") == 0)
{
if(device->FmtChans == DevFmtX51)
c = GetChannelIdxByName(device->RealOut, SideRight);
else
c = GetChannelIdxByName(device->RealOut, BackRight);
}
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "CB") == 0)
c = GetChannelIdxByName(device->RealOut, BackCenter);
else
{
const char *name = al_string_get_cstr(conf->Speakers[i].Name);
unsigned int n;
char ch;
if(sscanf(name, "AUX%u%c", &n, &ch) == 1 && n < 16)
c = GetChannelIdxByName(device->RealOut, Aux0+n);
else
{
ERR("AmbDec speaker label \"%s\" not recognized\n", name);
return false;
}
}
if(c == -1)
{
ERR("Failed to lookup AmbDec speaker label %s\n",
al_string_get_cstr(conf->Speakers[i].Name));
return false;
}
speakermap[i] = c;
}
return true;
}
ALvoid CalcNonAttnSourceParams(ALvoice *voice, const ALsource *ALSource, const ALCcontext *ALContext)
{
static const struct ChanMap MonoMap[1] = {
{ FrontCenter, 0.0f, 0.0f }
}, StereoMap[2] = {
{ FrontLeft, DEG2RAD(-30.0f), DEG2RAD(0.0f) },
{ FrontRight, DEG2RAD( 30.0f), DEG2RAD(0.0f) }
}, StereoWideMap[2] = {
{ FrontLeft, DEG2RAD(-90.0f), DEG2RAD(0.0f) },
{ FrontRight, DEG2RAD( 90.0f), DEG2RAD(0.0f) }
}, RearMap[2] = {
{ BackLeft, DEG2RAD(-150.0f), DEG2RAD(0.0f) },
{ BackRight, DEG2RAD( 150.0f), DEG2RAD(0.0f) }
}, QuadMap[4] = {
{ FrontLeft, DEG2RAD( -45.0f), DEG2RAD(0.0f) },
{ FrontRight, DEG2RAD( 45.0f), DEG2RAD(0.0f) },
{ BackLeft, DEG2RAD(-135.0f), DEG2RAD(0.0f) },
{ BackRight, DEG2RAD( 135.0f), DEG2RAD(0.0f) }
}, X51Map[6] = {
{ FrontLeft, DEG2RAD( -30.0f), DEG2RAD(0.0f) },
{ FrontRight, DEG2RAD( 30.0f), DEG2RAD(0.0f) },
{ FrontCenter, DEG2RAD( 0.0f), DEG2RAD(0.0f) },
{ LFE, 0.0f, 0.0f },
{ SideLeft, DEG2RAD(-110.0f), DEG2RAD(0.0f) },
{ SideRight, DEG2RAD( 110.0f), DEG2RAD(0.0f) }
}, X61Map[7] = {
{ FrontLeft, DEG2RAD(-30.0f), DEG2RAD(0.0f) },
{ FrontRight, DEG2RAD( 30.0f), DEG2RAD(0.0f) },
{ FrontCenter, DEG2RAD( 0.0f), DEG2RAD(0.0f) },
{ LFE, 0.0f, 0.0f },
{ BackCenter, DEG2RAD(180.0f), DEG2RAD(0.0f) },
{ SideLeft, DEG2RAD(-90.0f), DEG2RAD(0.0f) },
{ SideRight, DEG2RAD( 90.0f), DEG2RAD(0.0f) }
}, X71Map[8] = {
{ FrontLeft, DEG2RAD( -30.0f), DEG2RAD(0.0f) },
{ FrontRight, DEG2RAD( 30.0f), DEG2RAD(0.0f) },
{ FrontCenter, DEG2RAD( 0.0f), DEG2RAD(0.0f) },
{ LFE, 0.0f, 0.0f },
{ BackLeft, DEG2RAD(-150.0f), DEG2RAD(0.0f) },
{ BackRight, DEG2RAD( 150.0f), DEG2RAD(0.0f) },
{ SideLeft, DEG2RAD( -90.0f), DEG2RAD(0.0f) },
{ SideRight, DEG2RAD( 90.0f), DEG2RAD(0.0f) }
};
ALCdevice *Device = ALContext->Device;
ALfloat SourceVolume,ListenerGain,MinVolume,MaxVolume;
ALbufferlistitem *BufferListItem;
enum FmtChannels Channels;
ALfloat DryGain, DryGainHF, DryGainLF;
ALfloat WetGain[MAX_SENDS];
ALfloat WetGainHF[MAX_SENDS];
ALfloat WetGainLF[MAX_SENDS];
ALuint NumSends, Frequency;
ALboolean Relative;
const struct ChanMap *chans = NULL;
ALuint num_channels = 0;
ALboolean DirectChannels;
ALboolean isbformat = AL_FALSE;
ALfloat Pitch;
ALuint i, j, c;
/* Get device properties */
NumSends = Device->NumAuxSends;
Frequency = Device->Frequency;
/* Get listener properties */
ListenerGain = ALContext->Listener->Gain;
/* Get source properties */
SourceVolume = ALSource->Gain;
MinVolume = ALSource->MinGain;
MaxVolume = ALSource->MaxGain;
Pitch = ALSource->Pitch;
Relative = ALSource->HeadRelative;
DirectChannels = ALSource->DirectChannels;
voice->Direct.OutBuffer = Device->DryBuffer;
voice->Direct.OutChannels = Device->NumChannels;
for(i = 0;i < NumSends;i++)
{
ALeffectslot *Slot = ALSource->Send[i].Slot;
if(!Slot && i == 0)
Slot = Device->DefaultSlot;
if(!Slot || Slot->EffectType == AL_EFFECT_NULL)
voice->Send[i].OutBuffer = NULL;
else
voice->Send[i].OutBuffer = Slot->WetBuffer;
}
/* Calculate the stepping value */
Channels = FmtMono;
BufferListItem = ATOMIC_LOAD(&ALSource->queue);
while(BufferListItem != NULL)
{
ALbuffer *ALBuffer;
if((ALBuffer=BufferListItem->buffer) != NULL)
{
Pitch = Pitch * ALBuffer->Frequency / Frequency;
if(Pitch > (ALfloat)MAX_PITCH)
voice->Step = MAX_PITCH<<FRACTIONBITS;
else
{
voice->Step = fastf2i(Pitch*FRACTIONONE);
if(voice->Step == 0)
voice->Step = 1;
}
Channels = ALBuffer->FmtChannels;
break;
}
BufferListItem = BufferListItem->next;
}
/* Calculate gains */
DryGain = clampf(SourceVolume, MinVolume, MaxVolume);
DryGain *= ALSource->Direct.Gain * ListenerGain;
DryGainHF = ALSource->Direct.GainHF;
DryGainLF = ALSource->Direct.GainLF;
for(i = 0;i < NumSends;i++)
{
WetGain[i] = clampf(SourceVolume, MinVolume, MaxVolume);
WetGain[i] *= ALSource->Send[i].Gain * ListenerGain;
WetGainHF[i] = ALSource->Send[i].GainHF;
WetGainLF[i] = ALSource->Send[i].GainLF;
}
switch(Channels)
{
case FmtMono:
chans = MonoMap;
num_channels = 1;
break;
case FmtStereo:
/* HACK: Place the stereo channels at +/-90 degrees when using non-
* HRTF stereo output. This helps reduce the "monoization" caused
* by them panning towards the center. */
if(Device->FmtChans == DevFmtStereo && !Device->Hrtf)
chans = StereoWideMap;
else
chans = StereoMap;
num_channels = 2;
break;
case FmtRear:
chans = RearMap;
num_channels = 2;
break;
case FmtQuad:
chans = QuadMap;
num_channels = 4;
break;
case FmtX51:
chans = X51Map;
num_channels = 6;
break;
case FmtX61:
chans = X61Map;
num_channels = 7;
break;
case FmtX71:
chans = X71Map;
num_channels = 8;
break;
case FmtBFormat2D:
num_channels = 3;
isbformat = AL_TRUE;
DirectChannels = AL_FALSE;
break;
case FmtBFormat3D:
num_channels = 4;
isbformat = AL_TRUE;
DirectChannels = AL_FALSE;
break;
}
if(isbformat)
{
ALfloat N[3], V[3], U[3];
aluMatrix matrix;
/* AT then UP */
N[0] = ALSource->Orientation[0][0];
N[1] = ALSource->Orientation[0][1];
N[2] = ALSource->Orientation[0][2];
aluNormalize(N);
V[0] = ALSource->Orientation[1][0];
V[1] = ALSource->Orientation[1][1];
V[2] = ALSource->Orientation[1][2];
aluNormalize(V);
if(!Relative)
{
const aluMatrix *lmatrix = &ALContext->Listener->Params.Matrix;
aluVector at, up;
aluVectorSet(&at, N[0], N[1], N[2], 0.0f);
aluVectorSet(&up, V[0], V[1], V[2], 0.0f);
aluMatrixVector(&at, lmatrix);
aluMatrixVector(&up, lmatrix);
N[0] = at.v[0]; N[1] = at.v[1]; N[2] = at.v[2];
V[0] = up.v[0]; V[1] = up.v[1]; V[2] = up.v[2];
}
/* Build and normalize right-vector */
aluCrossproduct(N, V, U);
aluNormalize(U);
aluMatrixSet(&matrix,
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, -N[2], -N[0], N[1],
0.0f, U[2], U[0], -U[1],
0.0f, -V[2], -V[0], V[1]
);
for(c = 0;c < num_channels;c++)
{
MixGains *gains = voice->Direct.Gains[c];
ALfloat Target[MAX_OUTPUT_CHANNELS];
ComputeBFormatGains(Device, matrix.m[c], DryGain, Target);
for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
gains[i].Target = Target[i];
}
UpdateDryStepping(&voice->Direct, num_channels, (voice->Direct.Moving ? 64 : 0));
voice->Direct.Moving = AL_TRUE;
voice->IsHrtf = AL_FALSE;
for(i = 0;i < NumSends;i++)
WetGain[i] *= 1.4142f;
}
else if(DirectChannels != AL_FALSE)
{
if(Device->Hrtf)
{
voice->Direct.OutBuffer += voice->Direct.OutChannels;
voice->Direct.OutChannels = 2;
for(c = 0;c < num_channels;c++)
{
MixGains *gains = voice->Direct.Gains[c];
for(j = 0;j < MAX_OUTPUT_CHANNELS;j++)
gains[j].Target = 0.0f;
if(chans[c].channel == FrontLeft)
gains[0].Target = DryGain;
else if(chans[c].channel == FrontRight)
gains[1].Target = DryGain;
}
}
else for(c = 0;c < num_channels;c++)
{
MixGains *gains = voice->Direct.Gains[c];
int idx;
for(j = 0;j < MAX_OUTPUT_CHANNELS;j++)
gains[j].Target = 0.0f;
if((idx=GetChannelIdxByName(Device, chans[c].channel)) != -1)
gains[idx].Target = DryGain;
}
UpdateDryStepping(&voice->Direct, num_channels, (voice->Direct.Moving ? 64 : 0));
voice->Direct.Moving = AL_TRUE;
voice->IsHrtf = AL_FALSE;
}
else if(Device->Hrtf_Mode == FullHrtf)
{
voice->Direct.OutBuffer += voice->Direct.OutChannels;
voice->Direct.OutChannels = 2;
for(c = 0;c < num_channels;c++)
{
if(chans[c].channel == LFE)
{
/* Skip LFE */
voice->Direct.Hrtf[c].Params.Delay[0] = 0;
voice->Direct.Hrtf[c].Params.Delay[1] = 0;
for(i = 0;i < HRIR_LENGTH;i++)
{
voice->Direct.Hrtf[c].Params.Coeffs[i][0] = 0.0f;
voice->Direct.Hrtf[c].Params.Coeffs[i][1] = 0.0f;
}
}
else
{
/* Get the static HRIR coefficients and delays for this
* channel. */
GetLerpedHrtfCoeffs(Device->Hrtf,
chans[c].elevation, chans[c].angle, 1.0f, DryGain,
voice->Direct.Hrtf[c].Params.Coeffs,
voice->Direct.Hrtf[c].Params.Delay);
}
}
voice->Direct.Counter = 0;
voice->Direct.Moving = AL_TRUE;
voice->IsHrtf = AL_TRUE;
}
else
{
for(c = 0;c < num_channels;c++)
{
MixGains *gains = voice->Direct.Gains[c];
ALfloat Target[MAX_OUTPUT_CHANNELS];
/* Special-case LFE */
if(chans[c].channel == LFE)
{
int idx;
for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
gains[i].Target = 0.0f;
if((idx=GetChannelIdxByName(Device, chans[c].channel)) != -1)
gains[idx].Target = DryGain;
continue;
}
ComputeAngleGains(Device, chans[c].angle, chans[c].elevation, DryGain, Target);
for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
gains[i].Target = Target[i];
}
UpdateDryStepping(&voice->Direct, num_channels, (voice->Direct.Moving ? 64 : 0));
voice->Direct.Moving = AL_TRUE;
voice->IsHrtf = AL_FALSE;
}
for(i = 0;i < NumSends;i++)
{
voice->Send[i].Gain.Target = WetGain[i];
UpdateWetStepping(&voice->Send[i], (voice->Send[i].Moving ? 64 : 0));
voice->Send[i].Moving = AL_TRUE;
}
{
ALfloat gainhf = maxf(0.01f, DryGainHF);
ALfloat gainlf = maxf(0.01f, DryGainLF);
ALfloat hfscale = ALSource->Direct.HFReference / Frequency;
ALfloat lfscale = ALSource->Direct.LFReference / Frequency;
for(c = 0;c < num_channels;c++)
{
voice->Direct.Filters[c].ActiveType = AF_None;
if(gainhf != 1.0f) voice->Direct.Filters[c].ActiveType |= AF_LowPass;
if(gainlf != 1.0f) voice->Direct.Filters[c].ActiveType |= AF_HighPass;
ALfilterState_setParams(
&voice->Direct.Filters[c].LowPass, ALfilterType_HighShelf, gainhf,
hfscale, 0.0f
);
ALfilterState_setParams(
&voice->Direct.Filters[c].HighPass, ALfilterType_LowShelf, gainlf,
lfscale, 0.0f
);
}
}
for(i = 0;i < NumSends;i++)
{
ALfloat gainhf = maxf(0.01f, WetGainHF[i]);
ALfloat gainlf = maxf(0.01f, WetGainLF[i]);
ALfloat hfscale = ALSource->Send[i].HFReference / Frequency;
ALfloat lfscale = ALSource->Send[i].LFReference / Frequency;
for(c = 0;c < num_channels;c++)
{
voice->Send[i].Filters[c].ActiveType = AF_None;
if(gainhf != 1.0f) voice->Send[i].Filters[c].ActiveType |= AF_LowPass;
if(gainlf != 1.0f) voice->Send[i].Filters[c].ActiveType |= AF_HighPass;
ALfilterState_setParams(
&voice->Send[i].Filters[c].LowPass, ALfilterType_HighShelf, gainhf,
hfscale, 0.0f
);
ALfilterState_setParams(
&voice->Send[i].Filters[c].HighPass, ALfilterType_LowShelf, gainlf,
lfscale, 0.0f
);
}
}
}
ALvoid aluInitPanning(ALCdevice *device)
{
static const ChannelMap MonoCfg[1] = {
{ FrontCenter, { 1.4142f } },
}, StereoCfg[2] = {
{ FrontLeft, { 0.7071f, 0.5f, 0.0f, 0.0f } },
{ FrontRight, { 0.7071f, -0.5f, 0.0f, 0.0f } },
}, QuadCfg[4] = {
{ FrontLeft, { 0.353553f, 0.306184f, 0.0f, 0.306184f, 0.117186f, 0.0f, 0.0f, 0.0f, 0.000000f } },
{ FrontRight, { 0.353553f, -0.306184f, 0.0f, 0.306184f, -0.117186f, 0.0f, 0.0f, 0.0f, 0.000000f } },
{ BackLeft, { 0.353553f, 0.306184f, 0.0f, -0.306184f, -0.117186f, 0.0f, 0.0f, 0.0f, 0.000000f } },
{ BackRight, { 0.353553f, -0.306184f, 0.0f, -0.306184f, 0.117186f, 0.0f, 0.0f, 0.0f, 0.000000f } },
}, X51SideCfg[5] = {
{ FrontLeft, { 0.208954f, 0.238350f, 0.0f, 0.212846f, 0.204014f, 0.0f, 0.0f, 0.0f, -0.017738f, 0.047490f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f } },
{ FrontRight, { 0.208954f, -0.238350f, 0.0f, 0.212846f, -0.204014f, 0.0f, 0.0f, 0.0f, -0.017738f, -0.047490f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f } },
{ FrontCenter, { 0.109403f, 0.000000f, 0.0f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f } },
{ SideLeft, { 0.470936f, 0.349386f, 0.0f, -0.369626f, -0.058144f, 0.0f, 0.0f, 0.0f, -0.031375f, -0.043968f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f } },
{ SideRight, { 0.470936f, -0.349386f, 0.0f, -0.369626f, 0.058144f, 0.0f, 0.0f, 0.0f, -0.031375f, 0.043968f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f } },
}, X51RearCfg[5] = {
{ FrontLeft, { 0.208954f, 0.238350f, 0.0f, 0.212846f, 0.204014f, 0.0f, 0.0f, 0.0f, -0.017738f, 0.047490f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f } },
{ FrontRight, { 0.208954f, -0.238350f, 0.0f, 0.212846f, -0.204014f, 0.0f, 0.0f, 0.0f, -0.017738f, -0.047490f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f } },
{ FrontCenter, { 0.109403f, 0.000000f, 0.0f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f } },
{ BackLeft, { 0.470936f, 0.349386f, 0.0f, -0.369626f, -0.058144f, 0.0f, 0.0f, 0.0f, -0.031375f, -0.043968f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f } },
{ BackRight, { 0.470936f, -0.349386f, 0.0f, -0.369626f, 0.058144f, 0.0f, 0.0f, 0.0f, -0.031375f, 0.043968f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f } },
}, X61Cfg[6] = {
{ FrontLeft, { 0.167065f, 0.172695f, 0.0f, 0.200583f, 0.186407f, 0.0f, 0.0f, 0.0f, 0.029855f, 0.068910f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f } },
{ FrontRight, { 0.167065f, -0.172695f, 0.0f, 0.200583f, -0.186407f, 0.0f, 0.0f, 0.0f, 0.029855f, -0.068910f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f } },
{ FrontCenter, { 0.109403f, 0.000000f, 0.0f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f } },
{ BackCenter, { 0.353556f, 0.000000f, 0.0f, -0.461940f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.165723f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f } },
{ SideLeft, { 0.289151f, 0.401292f, 0.0f, -0.081301f, -0.071420f, 0.0f, 0.0f, 0.0f, -0.188208f, -0.032897f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.010099f } },
{ SideRight, { 0.289151f, -0.401292f, 0.0f, -0.081301f, 0.071420f, 0.0f, 0.0f, 0.0f, -0.188208f, 0.032897f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.010099f } },
}, X71Cfg[7] = {
{ FrontLeft, { 0.167065f, 0.172695f, 0.0f, 0.200583f, 0.186407f, 0.0f, 0.0f, 0.0f, 0.029855f, 0.068910f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f } },
{ FrontRight, { 0.167065f, -0.172695f, 0.0f, 0.200583f, -0.186407f, 0.0f, 0.0f, 0.0f, 0.029855f, -0.068910f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f } },
{ FrontCenter, { 0.109403f, 0.000000f, 0.0f, 0.179490f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.142031f, 0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f } },
{ BackLeft, { 0.224752f, 0.170325f, 0.0f, -0.295009f, -0.182473f, 0.0f, 0.0f, 0.0f, 0.105349f, 0.065799f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f } },
{ BackRight, { 0.224752f, -0.170325f, 0.0f, -0.295009f, 0.182473f, 0.0f, 0.0f, 0.0f, 0.105349f, -0.065799f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f } },
{ SideLeft, { 0.224739f, 0.340644f, 0.0f, 0.000000f, 0.000000f, 0.0f, 0.0f, 0.0f, -0.210697f, -0.065795f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f } },
{ SideRight, { 0.224739f, -0.340644f, 0.0f, 0.000000f, 0.000000f, 0.0f, 0.0f, 0.0f, -0.210697f, 0.065795f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.000000f } },
}, BFormat3D[4] = {
{ BFormatW, { 1.0f, 0.0f, 0.0f, 0.0f } },
{ BFormatX, { 0.0f, 0.0f, 0.0f, 1.0f } },
{ BFormatY, { 0.0f, 1.0f, 0.0f, 0.0f } },
{ BFormatZ, { 0.0f, 0.0f, 1.0f, 0.0f } },
};
const ChannelMap *chanmap = NULL;
ALfloat ambiscale = 1.0f;
size_t count = 0;
device->AmbiScale = 1.0f;
memset(device->AmbiCoeffs, 0, sizeof(device->AmbiCoeffs));
device->NumChannels = 0;
if(device->Hrtf)
{
ALfloat (*coeffs_list[4])[2];
ALuint *delay_list[4];
ALuint i;
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, ambiscale);
for(i = 0;i < 4;++i)
{
static const enum Channel inputs[4] = { BFormatW, BFormatY, BFormatZ, BFormatX };
int chan = GetChannelIdxByName(device, inputs[i]);
coeffs_list[i] = device->Hrtf_Params[chan].Coeffs;
delay_list[i] = device->Hrtf_Params[chan].Delay;
}
GetBFormatHrtfCoeffs(device->Hrtf, 4, coeffs_list, delay_list);
return;
}
if(LoadChannelSetup(device))
return;
switch(device->FmtChans)
{
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, ambiscale);
}
