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-rw-r--r--Alc/panning.c230
1 files changed, 37 insertions, 193 deletions
diff --git a/Alc/panning.c b/Alc/panning.c
index d0c89071..d775b746 100644
--- a/Alc/panning.c
+++ b/Alc/panning.c
@@ -81,200 +81,14 @@ static inline void Set3rdOrder(ALfloat coeffs[16], ALfloat w, ALfloat x, ALfloat
}
-void ComputeAngleGains(const ALCdevice *device, ALfloat angle, ALfloat hwidth, ALfloat ingain, ALfloat gains[MaxChannels])
+void ComputeAngleGains(const ALCdevice *device, ALfloat angle, ALfloat elevation, ALfloat ingain, ALfloat gains[MaxChannels])
{
- ALfloat tmpgains[MaxChannels] = { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f };
- enum Channel Speaker2Chan[MaxChannels];
- ALfloat SpeakerAngle[MaxChannels];
- ALfloat langle, rangle;
- ALfloat a;
- ALuint i;
-
- for(i = 0;i < device->NumSpeakers;i++)
- Speaker2Chan[i] = device->Speaker[i].ChanName;
- for(i = 0;i < device->NumSpeakers;i++)
- SpeakerAngle[i] = device->Speaker[i].Angle;
-
- for(i = 0;i < MaxChannels;i++)
- gains[i] = 0.0f;
-
- /* Some easy special-cases first... */
- if(device->NumSpeakers <= 1 || hwidth >= F_PI)
- {
- /* Full coverage for all speakers. */
- for(i = 0;i < device->NumSpeakers;i++)
- {
- enum Channel chan = Speaker2Chan[i];
- gains[chan] = ingain;
- }
- return;
- }
- if(hwidth <= 0.0f)
- {
- /* Infinitely small sound point. */
- for(i = 0;i < device->NumSpeakers-1;i++)
- {
- if(angle >= SpeakerAngle[i] && angle < SpeakerAngle[i+1])
- {
- /* Sound is between speakers i and i+1 */
- a = (angle-SpeakerAngle[i]) /
- (SpeakerAngle[i+1]-SpeakerAngle[i]);
- gains[Speaker2Chan[i]] = sqrtf(1.0f-a) * ingain;
- gains[Speaker2Chan[i+1]] = sqrtf( a) * ingain;
- return;
- }
- }
- /* Sound is between last and first speakers */
- if(angle < SpeakerAngle[0])
- angle += F_2PI;
- a = (angle-SpeakerAngle[i]) /
- (F_2PI + SpeakerAngle[0]-SpeakerAngle[i]);
- gains[Speaker2Chan[i]] = sqrtf(1.0f-a) * ingain;
- gains[Speaker2Chan[0]] = sqrtf( a) * ingain;
- return;
- }
-
- if(fabsf(angle)+hwidth > F_PI)
- {
- /* The coverage area would go outside of -pi...+pi. Instead, rotate the
- * speaker angles so it would be as if angle=0, and keep them wrapped
- * within -pi...+pi. */
- if(angle > 0.0f)
- {
- ALuint done;
- ALuint i = 0;
- while(i < device->NumSpeakers && device->Speaker[i].Angle-angle < -F_PI)
- i++;
- for(done = 0;i < device->NumSpeakers;done++)
- {
- SpeakerAngle[done] = device->Speaker[i].Angle-angle;
- Speaker2Chan[done] = device->Speaker[i].ChanName;
- i++;
- }
- for(i = 0;done < device->NumSpeakers;i++)
- {
- SpeakerAngle[done] = device->Speaker[i].Angle-angle + F_2PI;
- Speaker2Chan[done] = device->Speaker[i].ChanName;
- done++;
- }
- }
- else
- {
- /* NOTE: '< device->NumChan' on the iterators is correct here since
- * we need to handle index 0. Because the iterators are unsigned,
- * they'll underflow and wrap to become 0xFFFFFFFF, which will
- * break as expected. */
- ALuint done;
- ALuint i = device->NumSpeakers-1;
- while(i < device->NumSpeakers && device->Speaker[i].Angle-angle > F_PI)
- i--;
- for(done = device->NumSpeakers-1;i < device->NumSpeakers;done--)
- {
- SpeakerAngle[done] = device->Speaker[i].Angle-angle;
- Speaker2Chan[done] = device->Speaker[i].ChanName;
- i--;
- }
- for(i = device->NumSpeakers-1;done < device->NumSpeakers;i--)
- {
- SpeakerAngle[done] = device->Speaker[i].Angle-angle - F_2PI;
- Speaker2Chan[done] = device->Speaker[i].ChanName;
- done--;
- }
- }
- angle = 0.0f;
- }
- langle = angle - hwidth;
- rangle = angle + hwidth;
-
- /* First speaker */
- i = 0;
- do {
- ALuint last = device->NumSpeakers-1;
- enum Channel chan = Speaker2Chan[i];
-
- if(SpeakerAngle[i] >= langle && SpeakerAngle[i] <= rangle)
- {
- tmpgains[chan] = 1.0f;
- continue;
- }
-
- if(SpeakerAngle[i] < langle && SpeakerAngle[i+1] > langle)
- {
- a = (langle-SpeakerAngle[i]) /
- (SpeakerAngle[i+1]-SpeakerAngle[i]);
- tmpgains[chan] = lerp(tmpgains[chan], 1.0f, 1.0f-a);
- }
- if(SpeakerAngle[i] > rangle)
- {
- a = (F_2PI + rangle-SpeakerAngle[last]) /
- (F_2PI + SpeakerAngle[i]-SpeakerAngle[last]);
- tmpgains[chan] = lerp(tmpgains[chan], 1.0f, a);
- }
- else if(SpeakerAngle[last] < rangle)
- {
- a = (rangle-SpeakerAngle[last]) /
- (F_2PI + SpeakerAngle[i]-SpeakerAngle[last]);
- tmpgains[chan] = lerp(tmpgains[chan], 1.0f, a);
- }
- } while(0);
-
- for(i = 1;i < device->NumSpeakers-1;i++)
- {
- enum Channel chan = Speaker2Chan[i];
- if(SpeakerAngle[i] >= langle && SpeakerAngle[i] <= rangle)
- {
- tmpgains[chan] = 1.0f;
- continue;
- }
-
- if(SpeakerAngle[i] < langle && SpeakerAngle[i+1] > langle)
- {
- a = (langle-SpeakerAngle[i]) /
- (SpeakerAngle[i+1]-SpeakerAngle[i]);
- tmpgains[chan] = lerp(tmpgains[chan], 1.0f, 1.0f-a);
- }
- if(SpeakerAngle[i] > rangle && SpeakerAngle[i-1] < rangle)
- {
- a = (rangle-SpeakerAngle[i-1]) /
- (SpeakerAngle[i]-SpeakerAngle[i-1]);
- tmpgains[chan] = lerp(tmpgains[chan], 1.0f, a);
- }
- }
-
- /* Last speaker */
- i = device->NumSpeakers-1;
- do {
- enum Channel chan = Speaker2Chan[i];
- if(SpeakerAngle[i] >= langle && SpeakerAngle[i] <= rangle)
- {
- tmpgains[Speaker2Chan[i]] = 1.0f;
- continue;
- }
- if(SpeakerAngle[i] > rangle && SpeakerAngle[i-1] < rangle)
- {
- a = (rangle-SpeakerAngle[i-1]) /
- (SpeakerAngle[i]-SpeakerAngle[i-1]);
- tmpgains[chan] = lerp(tmpgains[chan], 1.0f, a);
- }
- if(SpeakerAngle[i] < langle)
- {
- a = (langle-SpeakerAngle[i]) /
- (F_2PI + SpeakerAngle[0]-SpeakerAngle[i]);
- tmpgains[chan] = lerp(tmpgains[chan], 1.0f, 1.0f-a);
- }
- else if(SpeakerAngle[0] > langle)
- {
- a = (F_2PI + langle-SpeakerAngle[i]) /
- (F_2PI + SpeakerAngle[0]-SpeakerAngle[i]);
- tmpgains[chan] = lerp(tmpgains[chan], 1.0f, 1.0f-a);
- }
- } while(0);
-
- for(i = 0;i < device->NumSpeakers;i++)
- {
- enum Channel chan = device->Speaker[i].ChanName;
- gains[chan] = sqrtf(tmpgains[chan]) * ingain;
- }
+ ALfloat dir[3] = {
+ -sinf(angle) * cosf(elevation),
+ sinf(elevation),
+ -cosf(angle) * cosf(elevation)
+ };
+ ComputeDirectionalGains(device, dir, ingain, gains);
}
void ComputeDirectionalGains(const ALCdevice *device, const ALfloat dir[3], ALfloat ingain, ALfloat gains[MaxChannels])
@@ -323,6 +137,7 @@ ALvoid aluInitPanning(ALCdevice *device)
device->NumSpeakers = 1;
device->Speaker[0].ChanName = FrontCenter;
device->Speaker[0].Angle = DEG2RAD(0.0f);
+ device->Speaker[0].Elevation = DEG2RAD(0.0f);
Set0thOrder(device->Speaker[0].Coeff, 1.4142f);
break;
@@ -332,6 +147,8 @@ ALvoid aluInitPanning(ALCdevice *device)
device->Speaker[1].ChanName = FrontRight;
device->Speaker[0].Angle = DEG2RAD(-90.0f);
device->Speaker[1].Angle = DEG2RAD( 90.0f);
+ device->Speaker[0].Elevation = DEG2RAD(0.0f);
+ device->Speaker[1].Elevation = DEG2RAD(0.0f);
Set1stOrder(device->Speaker[0].Coeff, 0.7071f, -0.5f, 0.0f, 0.0f);
Set1stOrder(device->Speaker[1].Coeff, 0.7071f, 0.5f, 0.0f, 0.0f);
break;
@@ -346,6 +163,10 @@ ALvoid aluInitPanning(ALCdevice *device)
device->Speaker[1].Angle = DEG2RAD( -45.0f);
device->Speaker[2].Angle = DEG2RAD( 45.0f);
device->Speaker[3].Angle = DEG2RAD( 135.0f);
+ device->Speaker[0].Elevation = DEG2RAD(0.0f);
+ device->Speaker[1].Elevation = DEG2RAD(0.0f);
+ device->Speaker[2].Elevation = DEG2RAD(0.0f);
+ device->Speaker[3].Elevation = DEG2RAD(0.0f);
Set2ndOrder(device->Speaker[0].Coeff, 0.353543f, -0.306192f, 0.306181f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.117193f);
Set2ndOrder(device->Speaker[1].Coeff, 0.353558f, 0.306181f, 0.306192f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.117183f);
Set2ndOrder(device->Speaker[2].Coeff, 0.353543f, 0.306181f, -0.306192f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.117193f);
@@ -364,6 +185,11 @@ ALvoid aluInitPanning(ALCdevice *device)
device->Speaker[2].Angle = DEG2RAD( 0.0f);
device->Speaker[3].Angle = DEG2RAD( 30.0f);
device->Speaker[4].Angle = DEG2RAD( 110.0f);
+ device->Speaker[0].Elevation = DEG2RAD(0.0f);
+ device->Speaker[1].Elevation = DEG2RAD(0.0f);
+ device->Speaker[2].Elevation = DEG2RAD(0.0f);
+ device->Speaker[3].Elevation = DEG2RAD(0.0f);
+ device->Speaker[4].Elevation = DEG2RAD(0.0f);
Set3rdOrder(device->Speaker[0].Coeff, 0.470934f, -0.369630f, 0.349383f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031379f, -0.058143f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007116f, -0.043968f);
Set3rdOrder(device->Speaker[1].Coeff, 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);
Set3rdOrder(device->Speaker[2].Coeff, 0.109403f, 0.179490f, -0.000002f, 0.0f, 0.0f, 0.0f, 0.0f, 0.142031f, -0.000002f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f, -0.000001f);
@@ -383,6 +209,11 @@ ALvoid aluInitPanning(ALCdevice *device)
device->Speaker[2].Angle = DEG2RAD( 0.0f);
device->Speaker[3].Angle = DEG2RAD( 30.0f);
device->Speaker[4].Angle = DEG2RAD( 90.0f);
+ device->Speaker[0].Elevation = DEG2RAD(0.0f);
+ device->Speaker[1].Elevation = DEG2RAD(0.0f);
+ device->Speaker[2].Elevation = DEG2RAD(0.0f);
+ device->Speaker[3].Elevation = DEG2RAD(0.0f);
+ device->Speaker[4].Elevation = DEG2RAD(0.0f);
Set3rdOrder(device->Speaker[0].Coeff, 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);
Set3rdOrder(device->Speaker[1].Coeff, 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);
Set3rdOrder(device->Speaker[2].Coeff, 0.109403f, 0.179490f, -0.000002f, 0.0f, 0.0f, 0.0f, 0.0f, 0.142031f, -0.000002f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f, -0.000001f);
@@ -404,6 +235,12 @@ ALvoid aluInitPanning(ALCdevice *device)
device->Speaker[3].Angle = DEG2RAD( 30.0f);
device->Speaker[4].Angle = DEG2RAD( 90.0f);
device->Speaker[5].Angle = DEG2RAD(180.0f);
+ device->Speaker[0].Elevation = DEG2RAD(0.0f);
+ device->Speaker[1].Elevation = DEG2RAD(0.0f);
+ device->Speaker[2].Elevation = DEG2RAD(0.0f);
+ device->Speaker[3].Elevation = DEG2RAD(0.0f);
+ device->Speaker[4].Elevation = DEG2RAD(0.0f);
+ device->Speaker[5].Elevation = DEG2RAD(0.0f);
Set3rdOrder(device->Speaker[0].Coeff, 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);
Set3rdOrder(device->Speaker[1].Coeff, 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);
Set3rdOrder(device->Speaker[2].Coeff, 0.109403f, 0.179490f, -0.000002f, 0.0f, 0.0f, 0.0f, 0.0f, 0.142031f, -0.000002f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.072024f, -0.000001f);
@@ -428,6 +265,13 @@ ALvoid aluInitPanning(ALCdevice *device)
device->Speaker[4].Angle = DEG2RAD( 30.0f);
device->Speaker[5].Angle = DEG2RAD( 90.0f);
device->Speaker[6].Angle = DEG2RAD( 150.0f);
+ device->Speaker[0].Elevation = DEG2RAD(0.0f);
+ device->Speaker[1].Elevation = DEG2RAD(0.0f);
+ device->Speaker[2].Elevation = DEG2RAD(0.0f);
+ device->Speaker[3].Elevation = DEG2RAD(0.0f);
+ device->Speaker[4].Elevation = DEG2RAD(0.0f);
+ device->Speaker[5].Elevation = DEG2RAD(0.0f);
+ device->Speaker[6].Elevation = DEG2RAD(0.0f);
Set3rdOrder(device->Speaker[0].Coeff, 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);
Set3rdOrder(device->Speaker[1].Coeff, 0.224739f, 0.000002f, 0.340644f, 0.0f, 0.0f, 0.0f, 0.0f, -0.210697f, 0.000002f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.000000f, -0.065795f);
Set3rdOrder(device->Speaker[2].Coeff, 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);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 23:02:39 +0000