update to snapshot spandsp-20080920.tar.gz

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@9771 d0543943-73ff-0310-b7d9-9358b9ac24b2
2025-08-13 17:38:59 +00:00 · 2008-10-01 04:06:53 +00:00
parent 2825fb6e5b
commit 738c0fc1dd
12 changed files with 1418 additions and 30 deletions
--- a/libs/spandsp/src/complex_vector_int.c
+++ b/libs/spandsp/src/complex_vector_int.c
@@ -0,0 +1,113 @@
+/*
+ * SpanDSP - a series of DSP components for telephony
+ *
+ * complex_vector_int.c - Integer complex vector arithmetic routines.
+ *
+ * Written by Steve Underwood <steveu@coppice.org>
+ *
+ * Copyright (C) 2006 Steve Underwood
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id: complex_vector_int.c,v 1.3 2008/09/18 13:54:32 steveu Exp $
+ */
+
+/*! \file */
+
+#if defined(HAVE_CONFIG_H)
+#include <config.h>
+#endif
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "floating_fudge.h"
+#if defined(HAVE_TGMATH_H)
+#include <tgmath.h>
+#endif
+#if defined(HAVE_MATH_H)
+#include <math.h>
+#endif
+#include <assert.h>
+
+#include "spandsp/telephony.h"
+#include "spandsp/logging.h"
+#include "spandsp/complex.h"
+#include "spandsp/vector_int.h"
+#include "spandsp/complex_vector_int.h"
+
+complexi32_t cvec_dot_prodi16(const complexi16_t x[], const complexi16_t y[], int n)
+{
+    int i;
+    complexi32_t z;
+
+    z = complex_seti32(0, 0);
+    for (i = 0;  i < n;  i++)
+    {
+        z.re += ((int32_t) x[i].re*(int32_t) y[i].re - (int32_t) x[i].im*(int32_t) y[i].im);
+        z.im += ((int32_t) x[i].re*(int32_t) y[i].im + (int32_t) x[i].im*(int32_t) y[i].re);
+    }
+    return z;
+}
+/*- End of function --------------------------------------------------------*/
+
+complexi32_t cvec_dot_prodi32(const complexi32_t x[], const complexi32_t y[], int n)
+{
+    int i;
+    complexi32_t z;
+
+    z = complex_seti32(0, 0);
+    for (i = 0;  i < n;  i++)
+    {
+        z.re += (x[i].re*y[i].re - x[i].im*y[i].im);
+        z.im += (x[i].re*y[i].im + x[i].im*y[i].re);
+    }
+    return z;
+}
+/*- End of function --------------------------------------------------------*/
+
+complexi32_t cvec_circular_dot_prodi16(const complexi16_t x[], const complexi16_t y[], int n, int pos)
+{
+    complexi32_t z;
+    complexi32_t z1;
+
+    z = cvec_dot_prodi16(&x[pos], &y[0], n - pos);
+    z1 = cvec_dot_prodi16(&x[0], &y[n - pos], pos);
+    z = complex_addi32(&z, &z1);
+    return z;
+}
+/*- End of function --------------------------------------------------------*/
+
+void cvec_lmsi16(const complexi16_t x[], complexi16_t y[], int n, const complexi16_t *error)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+    {
+        y[i].re += ((int32_t) x[i].im*(int32_t) error->im + (int32_t) x[i].re*(int32_t) error->re) >> 12;
+        y[i].im += ((int32_t) x[i].re*(int32_t) error->im - (int32_t) x[i].im*(int32_t) error->re) >> 12;
+    }
+}
+/*- End of function --------------------------------------------------------*/
+
+void cvec_circular_lmsi16(const complexi16_t x[], complexi16_t y[], int n, int pos, const complexi16_t *error)
+{
+    cvec_lmsi16(&x[pos], &y[0], n - pos, error);
+    cvec_lmsi16(&x[0], &y[n - pos], pos, error);
+}
+/*- End of function --------------------------------------------------------*/
+/*- End of file ------------------------------------------------------------*/