Convert bs2b.c to C++

1 files changed, 0 insertions, 187 deletions

diff --git a/Alc/bs2b.c b/Alc/bs2b.c
deleted file mode 100644
index e0ce3249..00000000
--- a/Alc/bs2b.c
+++ /dev/null
@@ -1,187 +0,0 @@
-/*-
- * Copyright (c) 2005 Boris Mikhaylov
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include "config.h"
-
-#include <math.h>
-#include <string.h>
-
-#include "bs2b.h"
-#include "alu.h"
-
-
-/* Set up all data. */
-static void init(struct bs2b *bs2b)
-{
-    float Fc_lo, Fc_hi;
-    float G_lo,  G_hi;
-    float x, g;
-
-    switch(bs2b->level)
-    {
-    case BS2B_LOW_CLEVEL: /* Low crossfeed level */
-        Fc_lo = 360.0f;
-        Fc_hi = 501.0f;
-        G_lo  = 0.398107170553497f;
-        G_hi  = 0.205671765275719f;
-        break;
-
-    case BS2B_MIDDLE_CLEVEL: /* Middle crossfeed level */
-        Fc_lo = 500.0f;
-        Fc_hi = 711.0f;
-        G_lo  = 0.459726988530872f;
-        G_hi  = 0.228208484414988f;
-        break;
-
-    case BS2B_HIGH_CLEVEL: /* High crossfeed level (virtual speakers are closer to itself) */
-        Fc_lo = 700.0f;
-        Fc_hi = 1021.0f;
-        G_lo  = 0.530884444230988f;
-        G_hi  = 0.250105790667544f;
-        break;
-
-    case BS2B_LOW_ECLEVEL: /* Low easy crossfeed level */
-        Fc_lo = 360.0f;
-        Fc_hi = 494.0f;
-        G_lo  = 0.316227766016838f;
-        G_hi  = 0.168236228897329f;
-        break;
-
-    case BS2B_MIDDLE_ECLEVEL: /* Middle easy crossfeed level */
-        Fc_lo = 500.0f;
-        Fc_hi = 689.0f;
-        G_lo  = 0.354813389233575f;
-        G_hi  = 0.187169483835901f;
-        break;
-
-    default: /* High easy crossfeed level */
-        bs2b->level = BS2B_HIGH_ECLEVEL;
-
-        Fc_lo = 700.0f;
-        Fc_hi = 975.0f;
-        G_lo  = 0.398107170553497f;
-        G_hi  = 0.205671765275719f;
-        break;
-    } /* switch */
-
-    g = 1.0f / (1.0f - G_hi + G_lo);
-
-    /* $fc = $Fc / $s;
-     * $d  = 1 / 2 / pi / $fc;
-     * $x  = exp(-1 / $d);
-     */
-    x           = expf(-2.0f * F_PI * Fc_lo / bs2b->srate);
-    bs2b->b1_lo = x;
-    bs2b->a0_lo = G_lo * (1.0f - x) * g;
-
-    x           = expf(-2.0f * F_PI * Fc_hi / bs2b->srate);
-    bs2b->b1_hi = x;
-    bs2b->a0_hi = (1.0f - G_hi * (1.0f - x)) * g;
-    bs2b->a1_hi = -x * g;
-} /* init */
-
-
-/* Exported functions.
- * See descriptions in "bs2b.h"
- */
-
-void bs2b_set_params(struct bs2b *bs2b, int level, int srate)
-{
-    if(srate <= 0) srate = 1;
-
-    bs2b->level = level;
-    bs2b->srate = srate;
-    init(bs2b);
-} /* bs2b_set_params */
-
-int bs2b_get_level(struct bs2b *bs2b)
-{
-    return bs2b->level;
-} /* bs2b_get_level */
-
-int bs2b_get_srate(struct bs2b *bs2b)
-{
-    return bs2b->srate;
-} /* bs2b_get_srate */
-
-void bs2b_clear(struct bs2b *bs2b)
-{
-    memset(&bs2b->last_sample, 0, sizeof(bs2b->last_sample));
-} /* bs2b_clear */
-
-void bs2b_cross_feed(struct bs2b *bs2b, float *RESTRICT Left, float *RESTRICT Right, int SamplesToDo)
-{
-    float lsamples[128][2];
-    float rsamples[128][2];
-    int base;
-
-    for(base = 0;base < SamplesToDo;)
-    {
-        int todo = mini(128, SamplesToDo-base);
-        int i;
-
-        /* Process left input */
-        lsamples[0][0] = bs2b->a0_lo*Left[0] +
-                         bs2b->b1_lo*bs2b->last_sample[0].lo;
-        lsamples[0][1] = bs2b->a0_hi*Left[0] +
-                         bs2b->a1_hi*bs2b->last_sample[0].asis +
-                         bs2b->b1_hi*bs2b->last_sample[0].hi;
-        for(i = 1;i < todo;i++)
-        {
-            lsamples[i][0] = bs2b->a0_lo*Left[i] +
-                             bs2b->b1_lo*lsamples[i-1][0];
-            lsamples[i][1] = bs2b->a0_hi*Left[i] +
-                             bs2b->a1_hi*Left[i-1] +
-                             bs2b->b1_hi*lsamples[i-1][1];
-        }
-        bs2b->last_sample[0].asis = Left[i-1];
-        bs2b->last_sample[0].lo = lsamples[i-1][0];
-        bs2b->last_sample[0].hi = lsamples[i-1][1];
-
-        /* Process right input */
-        rsamples[0][0] = bs2b->a0_lo*Right[0] +
-                         bs2b->b1_lo*bs2b->last_sample[1].lo;
-        rsamples[0][1] = bs2b->a0_hi*Right[0] +
-                         bs2b->a1_hi*bs2b->last_sample[1].asis +
-                         bs2b->b1_hi*bs2b->last_sample[1].hi;
-        for(i = 1;i < todo;i++)
-        {
-            rsamples[i][0] = bs2b->a0_lo*Right[i] +
-                             bs2b->b1_lo*rsamples[i-1][0];
-            rsamples[i][1] = bs2b->a0_hi*Right[i] +
-                             bs2b->a1_hi*Right[i-1] +
-                             bs2b->b1_hi*rsamples[i-1][1];
-        }
-        bs2b->last_sample[1].asis = Right[i-1];
-        bs2b->last_sample[1].lo = rsamples[i-1][0];
-        bs2b->last_sample[1].hi = rsamples[i-1][1];
-
-        /* Crossfeed */
-        for(i = 0;i < todo;i++)
-            *(Left++) = lsamples[i][1] + rsamples[i][0];
-        for(i = 0;i < todo;i++)
-            *(Right++) = rsamples[i][1] + lsamples[i][0];
-
-        base += todo;
-    }
-} /* bs2b_cross_feed */