aboutsummaryrefslogtreecommitdiffstats
path: root/Alc/ALu.c
diff options
context:
space:
mode:
authorChris Robinson <[email protected]>2009-10-21 15:31:21 -0700
committerChris Robinson <[email protected]>2009-10-21 15:31:21 -0700
commit55d7984582ff1f2be7c963b0cac44fac0fe0f2b9 (patch)
tree1f1f6b02d542e39f8686e7d96a8d319c533256b4 /Alc/ALu.c
parent8dbac9c0bdd9bf45a9a3c871c59766b3693d8d59 (diff)
Set the calculated source parameters directly
Diffstat (limited to 'Alc/ALu.c')
-rw-r--r--Alc/ALu.c76
1 files changed, 36 insertions, 40 deletions
diff --git a/Alc/ALu.c b/Alc/ALu.c
index ef5c5696..c49bb389 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -413,11 +413,8 @@ static __inline ALint aluCart2LUTpos(ALfloat re, ALfloat im)
return pos%LUT_NUM;
}
-static ALvoid CalcSourceParams(const ALCcontext *ALContext,
- const ALsource *ALSource, ALenum isMono,
- ALfloat *drysend, ALfloat *wetsend,
- ALfloat *pitch, FILTER *DryFilter,
- FILTER *WetFilter[MAX_SENDS])
+static ALvoid CalcSourceParams(const ALCcontext *ALContext, ALsource *ALSource,
+ ALboolean isMono)
{
ALfloat InnerAngle,OuterAngle,Angle,Distance,DryMix;
ALfloat Direction[3],Position[3],SourceToListener[3];
@@ -431,6 +428,7 @@ static ALvoid CalcSourceParams(const ALCcontext *ALContext,
ALfloat MetersPerUnit;
ALfloat RoomRolloff[MAX_SENDS];
ALfloat DryGainHF = 1.0f;
+ ALfloat WetGain[MAX_SENDS];
ALfloat WetGainHF[MAX_SENDS];
ALfloat DirGain, AmbientGain;
ALfloat length;
@@ -468,7 +466,7 @@ static ALvoid CalcSourceParams(const ALCcontext *ALContext,
if(isMono == AL_FALSE)
{
//1. Multi-channel buffers always play "normal"
- pitch[0] = ALSource->flPitch;
+ ALSource->Params.Pitch = ALSource->flPitch;
DryMix = SourceVolume;
DryMix = __min(DryMix,MaxVolume);
@@ -482,17 +480,17 @@ static ALvoid CalcSourceParams(const ALCcontext *ALContext,
break;
}
- drysend[FRONT_LEFT] = DryMix * ListenerGain;
- drysend[FRONT_RIGHT] = DryMix * ListenerGain;
- drysend[SIDE_LEFT] = DryMix * ListenerGain;
- drysend[SIDE_RIGHT] = DryMix * ListenerGain;
- drysend[BACK_LEFT] = DryMix * ListenerGain;
- drysend[BACK_RIGHT] = DryMix * ListenerGain;
- drysend[FRONT_CENTER] = DryMix * ListenerGain;
- drysend[BACK_CENTER] = DryMix * ListenerGain;
- drysend[LFE] = DryMix * ListenerGain;
+ ALSource->Params.DryGains[FRONT_LEFT] = DryMix * ListenerGain;
+ ALSource->Params.DryGains[FRONT_RIGHT] = DryMix * ListenerGain;
+ ALSource->Params.DryGains[SIDE_LEFT] = DryMix * ListenerGain;
+ ALSource->Params.DryGains[SIDE_RIGHT] = DryMix * ListenerGain;
+ ALSource->Params.DryGains[BACK_LEFT] = DryMix * ListenerGain;
+ ALSource->Params.DryGains[BACK_RIGHT] = DryMix * ListenerGain;
+ ALSource->Params.DryGains[FRONT_CENTER] = DryMix * ListenerGain;
+ ALSource->Params.DryGains[BACK_CENTER] = DryMix * ListenerGain;
+ ALSource->Params.DryGains[LFE] = DryMix * ListenerGain;
for(i = 0;i < MAX_SENDS;i++)
- wetsend[i] = 0.0f;
+ ALSource->Params.WetGains[i] = 0.0f;
/* Update filter coefficients. Calculations based on the I3DL2
* spec. */
@@ -507,9 +505,9 @@ static ALvoid CalcSourceParams(const ALCcontext *ALContext,
if(g < 0.9999f) /* 1-epsilon */
a = (1 - g*cw - aluSqrt(2*g*(1-cw) - g*g*(1 - cw*cw))) /
(1 - g);
- DryFilter->coeff = a;
+ ALSource->Params.iirFilter.coeff = a;
for(i = 0;i < MAX_SENDS;i++)
- WetFilter[i]->coeff = 0.0f;
+ ALSource->Params.Send[i].iirFilter.coeff = 0.0f;
return;
}
@@ -632,7 +630,7 @@ static ALvoid CalcSourceParams(const ALCcontext *ALContext,
{
ALfloat WetMix = SourceVolume * RoomAttenuation[i];
WetMix = __min(WetMix,MaxVolume);
- wetsend[i] = __max(WetMix,MinVolume);
+ WetGain[i] = __max(WetMix,MinVolume);
WetGainHF[i] = 1.0f;
}
@@ -700,56 +698,56 @@ static ALvoid CalcSourceParams(const ALCcontext *ALContext,
flVLS = -flMaxVelocity + 1.0f;
}
- pitch[0] = ALSource->flPitch *
- ((flSpeedOfSound * DopplerVelocity) - (DopplerFactor * flVLS)) /
- ((flSpeedOfSound * DopplerVelocity) - (DopplerFactor * flVSS));
+ ALSource->Params.Pitch = ALSource->flPitch *
+ ((flSpeedOfSound * DopplerVelocity) - (DopplerFactor * flVLS)) /
+ ((flSpeedOfSound * DopplerVelocity) - (DopplerFactor * flVSS));
}
else
- pitch[0] = ALSource->flPitch;
+ ALSource->Params.Pitch = ALSource->flPitch;
for(i = 0;i < NumSends;i++)
{
if(ALSource->Send[i].Slot &&
ALSource->Send[i].Slot->effect.type != AL_EFFECT_NULL)
{
- if(ALSource->WetGainAuto)
- wetsend[i] *= ConeVolume;
- if(ALSource->WetGainHFAuto)
- WetGainHF[i] *= ConeHF;
-
if(ALSource->Send[i].Slot->AuxSendAuto)
{
+ if(ALSource->WetGainAuto)
+ WetGain[i] *= ConeVolume;
+ if(ALSource->WetGainHFAuto)
+ WetGainHF[i] *= ConeHF;
+
// Apply minimal attenuation in place of missing
// statistical reverb model.
- wetsend[i] *= pow(DryMix, 1.0f / 2.0f);
+ WetGain[i] *= pow(DryMix, 1.0f / 2.0f);
}
else
{
// If the slot's auxiliary send auto is off, the data sent to
// the effect slot is the same as the dry path, sans filter
// effects
- wetsend[i] = DryMix;
+ WetGain[i] = DryMix;
WetGainHF[i] = DryGainHF;
}
switch(ALSource->Send[i].WetFilter.type)
{
case AL_FILTER_LOWPASS:
- wetsend[i] *= ALSource->Send[i].WetFilter.Gain;
+ WetGain[i] *= ALSource->Send[i].WetFilter.Gain;
WetGainHF[i] *= ALSource->Send[i].WetFilter.GainHF;
break;
}
- wetsend[i] *= ListenerGain;
+ ALSource->Params.WetGains[i] = WetGain[i] * ListenerGain;
}
else
{
- wetsend[i] = 0.0f;
+ ALSource->Params.WetGains[i] = 0.0f;
WetGainHF[i] = 1.0f;
}
}
for(i = NumSends;i < MAX_SENDS;i++)
{
- wetsend[i] = 0.0f;
+ ALSource->Params.WetGains[i] = 0.0f;
WetGainHF[i] = 1.0f;
}
@@ -785,7 +783,7 @@ static ALvoid CalcSourceParams(const ALCcontext *ALContext,
for(s = 0; s < OUTPUTCHANNELS; s++)
{
ALfloat gain = SpeakerGain[s]*DirGain + AmbientGain;
- drysend[s] = DryMix * gain;
+ ALSource->Params.DryGains[s] = DryMix * gain;
}
/* Update filter coefficients. */
@@ -798,7 +796,7 @@ static ALvoid CalcSourceParams(const ALCcontext *ALContext,
if(g < 0.9999f) /* 1-epsilon */
a = (1 - g*cw - aluSqrt(2*g*(1-cw) - g*g*(1 - cw*cw))) /
(1 - g);
- DryFilter->coeff = a;
+ ALSource->Params.iirFilter.coeff = a;
for(i = 0;i < NumSends;i++)
{
@@ -809,7 +807,7 @@ static ALvoid CalcSourceParams(const ALCcontext *ALContext,
if(g < 0.9999f) /* 1-epsilon */
a = (1 - g*cw - aluSqrt(2*g*(1-cw) - g*g*(1 - cw*cw))) /
(1 - g);
- WetFilter[i]->coeff = a;
+ ALSource->Params.Send[i].iirFilter.coeff = a;
}
}
@@ -888,9 +886,7 @@ another_source:
DummyBuffer);
}
- CalcSourceParams(ALContext, ALSource, (Channels==1)?AL_TRUE:AL_FALSE,
- ALSource->Params.DryGains, ALSource->Params.WetGains,
- &ALSource->Params.Pitch, DryFilter, WetFilter);
+ CalcSourceParams(ALContext, ALSource, (Channels==1)?AL_TRUE:AL_FALSE);
Pitch = (ALSource->Params.Pitch*ALBuffer->frequency) / frequency;
if(DuplicateStereo && Channels == 2)