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-rw-r--r--Alc/ALc.c6
-rw-r--r--Alc/ALu.c30
-rw-r--r--Alc/mixer.c4
-rw-r--r--Alc/nfcfilter.c160
-rw-r--r--Alc/nfcfilter.h32
5 files changed, 120 insertions, 112 deletions
diff --git a/Alc/ALc.c b/Alc/ALc.c
index 461934cc..db100d7c 100644
--- a/Alc/ALc.c
+++ b/Alc/ALc.c
@@ -2331,11 +2331,7 @@ static ALCenum UpdateDeviceParams(ALCdevice *device, const ALCint *attrList)
ALfloat w1 = SPEEDOFSOUNDMETRESPERSEC /
(device->AvgSpeakerDist * device->Frequency);
for(i = 0;i < voice->NumChannels;i++)
- {
- NfcFilterCreate1(&voice->Direct.Params[i].NFCtrlFilter[0], 0.0f, w1);
- NfcFilterCreate2(&voice->Direct.Params[i].NFCtrlFilter[1], 0.0f, w1);
- NfcFilterCreate3(&voice->Direct.Params[i].NFCtrlFilter[2], 0.0f, w1);
- }
+ NfcFilterCreate(&voice->Direct.Params[i].NFCtrlFilter, 0.0f, w1);
}
}
almtx_unlock(&context->SourceLock);
diff --git a/Alc/ALu.c b/Alc/ALu.c
index 0f6c447e..f73b1985 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -601,9 +601,7 @@ static void CalcPanningAndFilters(ALvoice *voice, const ALfloat Distance, const
w0 = minf(w0, w1*4.0f);
/* Only need to adjust the first channel of a B-Format source. */
- NfcFilterAdjust1(&voice->Direct.Params[0].NFCtrlFilter[0], w0);
- NfcFilterAdjust2(&voice->Direct.Params[0].NFCtrlFilter[1], w0);
- NfcFilterAdjust3(&voice->Direct.Params[0].NFCtrlFilter[2], w0);
+ NfcFilterAdjust(&voice->Direct.Params[0].NFCtrlFilter, w0);
for(i = 0;i < MAX_AMBI_ORDER+1;i++)
voice->Direct.ChannelsPerOrder[i] = Device->Dry.NumChannelsPerOrder[i];
@@ -660,9 +658,7 @@ static void CalcPanningAndFilters(ALvoice *voice, const ALfloat Distance, const
* is what we want for FOA input. The first channel may have
* been previously re-adjusted if panned, so reset it.
*/
- NfcFilterAdjust1(&voice->Direct.Params[0].NFCtrlFilter[0], 0.0f);
- NfcFilterAdjust2(&voice->Direct.Params[0].NFCtrlFilter[1], 0.0f);
- NfcFilterAdjust3(&voice->Direct.Params[0].NFCtrlFilter[2], 0.0f);
+ NfcFilterAdjust(&voice->Direct.Params[0].NFCtrlFilter, 0.0f);
voice->Direct.ChannelsPerOrder[0] = 1;
voice->Direct.ChannelsPerOrder[1] = mini(voice->Direct.Channels-1, 3);
@@ -896,6 +892,10 @@ static void CalcPanningAndFilters(ALvoice *voice, const ALfloat Distance, const
*/
w0 = minf(w0, w1*4.0f);
+ /* Adjust NFC filters. */
+ for(c = 0;c < num_channels;c++)
+ NfcFilterAdjust(&voice->Direct.Params[c].NFCtrlFilter, w0);
+
for(i = 0;i < MAX_AMBI_ORDER+1;i++)
voice->Direct.ChannelsPerOrder[i] = Device->Dry.NumChannelsPerOrder[i];
voice->Flags |= VOICE_HAS_NFC;
@@ -915,14 +915,6 @@ static void CalcPanningAndFilters(ALvoice *voice, const ALfloat Distance, const
for(c = 0;c < num_channels;c++)
{
- /* Adjust NFC filters if needed. */
- if((voice->Flags&VOICE_HAS_NFC))
- {
- NfcFilterAdjust1(&voice->Direct.Params[c].NFCtrlFilter[0], w0);
- NfcFilterAdjust2(&voice->Direct.Params[c].NFCtrlFilter[1], w0);
- NfcFilterAdjust3(&voice->Direct.Params[c].NFCtrlFilter[2], w0);
- }
-
/* Special-case LFE */
if(chans[c].channel == LFE)
{
@@ -979,6 +971,9 @@ static void CalcPanningAndFilters(ALvoice *voice, const ALfloat Distance, const
w0 = SPEEDOFSOUNDMETRESPERSEC /
(Device->AvgSpeakerDist * (ALfloat)Device->Frequency);
+ for(c = 0;c < num_channels;c++)
+ NfcFilterAdjust(&voice->Direct.Params[c].NFCtrlFilter, w0);
+
for(i = 0;i < MAX_AMBI_ORDER+1;i++)
voice->Direct.ChannelsPerOrder[i] = Device->Dry.NumChannelsPerOrder[i];
voice->Flags |= VOICE_HAS_NFC;
@@ -988,13 +983,6 @@ static void CalcPanningAndFilters(ALvoice *voice, const ALfloat Distance, const
{
ALfloat coeffs[MAX_AMBI_COEFFS];
- if((voice->Flags&VOICE_HAS_NFC))
- {
- NfcFilterAdjust1(&voice->Direct.Params[c].NFCtrlFilter[0], w0);
- NfcFilterAdjust2(&voice->Direct.Params[c].NFCtrlFilter[1], w0);
- NfcFilterAdjust3(&voice->Direct.Params[c].NFCtrlFilter[2], w0);
- }
-
/* Special-case LFE */
if(chans[c].channel == LFE)
{
diff --git a/Alc/mixer.c b/Alc/mixer.c
index 11b721f1..eb4568b2 100644
--- a/Alc/mixer.c
+++ b/Alc/mixer.c
@@ -564,8 +564,8 @@ ALboolean MixSource(ALvoice *voice, ALuint SourceID, ALCcontext *Context, ALsize
#define APPLY_NFC_MIX(order) \
if(voice->Direct.ChannelsPerOrder[order] > 0) \
{ \
- NfcFilterUpdate##order(&parms->NFCtrlFilter[order-1], nfcsamples, \
- samples, DstBufferSize); \
+ NfcFilterUpdate##order(&parms->NFCtrlFilter, nfcsamples, samples, \
+ DstBufferSize); \
MixSamples(nfcsamples, voice->Direct.ChannelsPerOrder[order], \
voice->Direct.Buffer+chanoffset, parms->Gains.Current+chanoffset, \
parms->Gains.Target+chanoffset, Counter, OutPos, DstBufferSize \
diff --git a/Alc/nfcfilter.c b/Alc/nfcfilter.c
index 758863c9..57a3e28f 100644
--- a/Alc/nfcfilter.c
+++ b/Alc/nfcfilter.c
@@ -52,13 +52,11 @@ static const float B[4][3] = {
/*{ 4.2076f, 11.4877f, 5.7924f, 9.1401f }*/
};
-void NfcFilterCreate1(NfcFilter *nfc, const float w0, const float w1)
+static void NfcFilterCreate1(struct NfcFilter1 *nfc, const float w0, const float w1)
{
float b_00, g_0;
float r;
- memset(nfc, 0, sizeof(*nfc));
-
nfc->g = 1.0f;
nfc->coeffs[0] = 1.0f;
@@ -80,7 +78,7 @@ void NfcFilterCreate1(NfcFilter *nfc, const float w0, const float w1)
nfc->coeffs[1+1] = (2.0f * b_00) / g_0;
}
-void NfcFilterAdjust1(NfcFilter *nfc, const float w0)
+static void NfcFilterAdjust1(struct NfcFilter1 *nfc, const float w0)
{
float b_00, g_0;
float r;
@@ -93,36 +91,12 @@ void NfcFilterAdjust1(NfcFilter *nfc, const float w0)
nfc->coeffs[1] = (2.0f * b_00) / g_0;
}
-void NfcFilterUpdate1(NfcFilter *nfc, ALfloat *restrict dst, const float *restrict src, const int count)
-{
- const float b0 = nfc->coeffs[0];
- const float a0 = nfc->coeffs[1];
- const float a1 = nfc->coeffs[2];
- float z1 = nfc->history[0];
- int i;
-
- for(i = 0;i < count;i++)
- {
- float out = src[i] * b0;
- float y;
-
- y = out - (a1*z1);
- out = y + (a0*z1);
- z1 += y;
-
- dst[i] = out;
- }
- nfc->history[0] = z1;
-}
-
-void NfcFilterCreate2(NfcFilter *nfc, const float w0, const float w1)
+static void NfcFilterCreate2(struct NfcFilter2 *nfc, const float w0, const float w1)
{
float b_10, b_11, g_1;
float r;
- memset(nfc, 0, sizeof(*nfc));
-
nfc->g = 1.0f;
nfc->coeffs[0] = 1.0f;
@@ -148,7 +122,7 @@ void NfcFilterCreate2(NfcFilter *nfc, const float w0, const float w1)
nfc->coeffs[2+2] = (4.0f * b_11) / g_1;
}
-void NfcFilterAdjust2(NfcFilter *nfc, const float w0)
+static void NfcFilterAdjust2(struct NfcFilter2 *nfc, const float w0)
{
float b_10, b_11, g_1;
float r;
@@ -163,42 +137,13 @@ void NfcFilterAdjust2(NfcFilter *nfc, const float w0)
nfc->coeffs[2] = (4.0f * b_11) / g_1;
}
-void NfcFilterUpdate2(NfcFilter *nfc, ALfloat *restrict dst, const float *restrict src, const int count)
-{
- const float b0 = nfc->coeffs[0];
- const float a00 = nfc->coeffs[1];
- const float a01 = nfc->coeffs[2];
- const float a10 = nfc->coeffs[3];
- const float a11 = nfc->coeffs[4];
- float z1 = nfc->history[0];
- float z2 = nfc->history[1];
- int i;
- for(i = 0;i < count;i++)
- {
- float out = src[i] * b0;
- float y;
-
- y = out - (a10*z1) - (a11*z2);
- out = y + (a00*z1) + (a01*z2);
- z2 += z1;
- z1 += y;
-
- dst[i] = out;
- }
- nfc->history[0] = z1;
- nfc->history[1] = z2;
-}
-
-
-void NfcFilterCreate3(NfcFilter *nfc, const float w0, const float w1)
+static void NfcFilterCreate3(struct NfcFilter3 *nfc, const float w0, const float w1)
{
float b_10, b_11, g_1;
float b_00, g_0;
float r;
- memset(nfc, 0, sizeof(*nfc));
-
nfc->g = 1.0f;
nfc->coeffs[0] = 1.0f;
@@ -237,7 +182,7 @@ void NfcFilterCreate3(NfcFilter *nfc, const float w0, const float w1)
nfc->coeffs[3+2+1] = (2.0f * b_00) / g_0;
}
-void NfcFilterAdjust3(NfcFilter *nfc, const float w0)
+static void NfcFilterAdjust3(struct NfcFilter3 *nfc, const float w0)
{
float b_10, b_11, g_1;
float b_00, g_0;
@@ -259,18 +204,84 @@ void NfcFilterAdjust3(NfcFilter *nfc, const float w0)
nfc->coeffs[2+1] = (2.0f * b_00) / g_0;
}
+
+void NfcFilterCreate(NfcFilter *nfc, const float w0, const float w1)
+{
+ memset(nfc, 0, sizeof(*nfc));
+ NfcFilterCreate1(&nfc->first, w0, w1);
+ NfcFilterCreate2(&nfc->second, w0, w1);
+ NfcFilterCreate3(&nfc->third, w0, w1);
+}
+
+void NfcFilterAdjust(NfcFilter *nfc, const float w0)
+{
+ NfcFilterAdjust1(&nfc->first, w0);
+ NfcFilterAdjust2(&nfc->second, w0);
+ NfcFilterAdjust3(&nfc->third, w0);
+}
+
+
+void NfcFilterUpdate1(NfcFilter *nfc, ALfloat *restrict dst, const float *restrict src, const int count)
+{
+ const float b0 = nfc->first.coeffs[0];
+ const float a0 = nfc->first.coeffs[1];
+ const float a1 = nfc->first.coeffs[2];
+ float z1 = nfc->first.history[0];
+ int i;
+
+ for(i = 0;i < count;i++)
+ {
+ float out = src[i] * b0;
+ float y;
+
+ y = out - (a1*z1);
+ out = y + (a0*z1);
+ z1 += y;
+
+ dst[i] = out;
+ }
+ nfc->first.history[0] = z1;
+}
+
+void NfcFilterUpdate2(NfcFilter *nfc, ALfloat *restrict dst, const float *restrict src, const int count)
+{
+ const float b0 = nfc->second.coeffs[0];
+ const float a00 = nfc->second.coeffs[1];
+ const float a01 = nfc->second.coeffs[2];
+ const float a10 = nfc->second.coeffs[3];
+ const float a11 = nfc->second.coeffs[4];
+ float z1 = nfc->second.history[0];
+ float z2 = nfc->second.history[1];
+ int i;
+
+ for(i = 0;i < count;i++)
+ {
+ float out = src[i] * b0;
+ float y;
+
+ y = out - (a10*z1) - (a11*z2);
+ out = y + (a00*z1) + (a01*z2);
+ z2 += z1;
+ z1 += y;
+
+ dst[i] = out;
+ }
+ nfc->second.history[0] = z1;
+ nfc->second.history[1] = z2;
+}
+
void NfcFilterUpdate3(NfcFilter *nfc, ALfloat *restrict dst, const float *restrict src, const int count)
{
- const float b0 = nfc->coeffs[0];
- const float a00 = nfc->coeffs[1];
- const float a01 = nfc->coeffs[2];
- const float a02 = nfc->coeffs[3];
- const float a10 = nfc->coeffs[4];
- const float a11 = nfc->coeffs[5];
- const float a12 = nfc->coeffs[6];
- float z1 = nfc->history[0];
- float z2 = nfc->history[1];
- float z3 = nfc->history[2];
+ const float b0 = nfc->third.coeffs[0];
+ const float a00 = nfc->third.coeffs[1];
+ const float a01 = nfc->third.coeffs[2];
+ const float a02 = nfc->third.coeffs[3];
+ const float a10 = nfc->third.coeffs[4];
+ const float a11 = nfc->third.coeffs[5];
+ const float a12 = nfc->third.coeffs[6];
+ float z1 = nfc->third.history[0];
+ float z2 = nfc->third.history[1];
+ float z3 = nfc->third.history[2];
int i;
for(i = 0;i < count;i++)
@@ -289,12 +300,11 @@ void NfcFilterUpdate3(NfcFilter *nfc, ALfloat *restrict dst, const float *restri
dst[i] = out;
}
- nfc->history[0] = z1;
- nfc->history[1] = z2;
- nfc->history[2] = z3;
+ nfc->third.history[0] = z1;
+ nfc->third.history[1] = z2;
+ nfc->third.history[2] = z3;
}
-
#if 0 /* Original methods the above are derived from. */
static void NfcFilterCreate(NfcFilter *nfc, const ALsizei order, const float src_dist, const float ctl_dist, const float rate)
{
diff --git a/Alc/nfcfilter.h b/Alc/nfcfilter.h
index 199849fb..0bf9a5c4 100644
--- a/Alc/nfcfilter.h
+++ b/Alc/nfcfilter.h
@@ -3,12 +3,29 @@
#include "alMain.h"
-typedef struct NfcFilter {
+struct NfcFilter1 {
+ float g;
+ float coeffs[1*2 + 1];
+ float history[1];
+};
+struct NfcFilter2 {
float g;
- float coeffs[MAX_AMBI_ORDER*2 + 1];
- float history[MAX_AMBI_ORDER];
+ float coeffs[2*2 + 1];
+ float history[2];
+};
+struct NfcFilter3 {
+ float g;
+ float coeffs[3*2 + 1];
+ float history[3];
+};
+
+typedef struct NfcFilter {
+ struct NfcFilter1 first;
+ struct NfcFilter2 second;
+ struct NfcFilter3 third;
} NfcFilter;
+
/* NOTE:
* w0 = speed_of_sound / (source_distance * sample_rate);
* w1 = speed_of_sound / (control_distance * sample_rate);
@@ -19,19 +36,16 @@ typedef struct NfcFilter {
* small relative to the control distance.
*/
+void NfcFilterCreate(NfcFilter *nfc, const float w0, const float w1);
+void NfcFilterAdjust(NfcFilter *nfc, const float w0);
+
/* Near-field control filter for first-order ambisonic channels (1-3). */
-void NfcFilterCreate1(NfcFilter *nfc, const float w0, const float w1);
-void NfcFilterAdjust1(NfcFilter *nfc, const float w0);
void NfcFilterUpdate1(NfcFilter *nfc, float *restrict dst, const float *restrict src, const int count);
/* Near-field control filter for second-order ambisonic channels (4-8). */
-void NfcFilterCreate2(NfcFilter *nfc, const float w0, const float w1);
-void NfcFilterAdjust2(NfcFilter *nfc, const float w0);
void NfcFilterUpdate2(NfcFilter *nfc, float *restrict dst, const float *restrict src, const int count);
/* Near-field control filter for third-order ambisonic channels (9-15). */
-void NfcFilterCreate3(NfcFilter *nfc, const float w0, const float w1);
-void NfcFilterAdjust3(NfcFilter *nfc, const float w0);
void NfcFilterUpdate3(NfcFilter *nfc, float *restrict dst, const float *restrict src, const int count);
#endif /* NFCFILTER_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 08:23:17 +0000