CWE Directory Reorganization Part 2: Fix VS2010 project file paths

Also moved SDK directories into toolset-specific build directory.

Build/VS2010/StaticSDKs/XPlatform/speex/libspeex/lpc.c

@@ -0,0 +1,119 @@
+/*
+  Copyright 1992, 1993, 1994 by Jutta Degener and Carsten Bormann,
+  Technische Universitaet Berlin
+
+  Any use of this software is permitted provided that this notice is not
+  removed and that neither the authors nor the Technische Universitaet Berlin
+  are deemed to have made any representations as to the suitability of this
+  software for any purpose nor are held responsible for any defects of
+  this software.  THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
+
+  As a matter of courtesy, the authors request to be informed about uses
+  this software has found, about bugs in this software, and about any
+  improvements that may be of general interest.
+
+  Berlin, 28.11.1994
+  Jutta Degener
+  Carsten Bormann
+
+
+   Code slightly modified by Jean-Marc Valin
+
+   Speex License:
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+
+/* LPC- and Reflection Coefficients
+ *
+ * The next two functions calculate linear prediction coefficients
+ * and/or the related reflection coefficients from the first P_MAX+1
+ * values of the autocorrelation function.
+ */
+
+/* Invented by N. Levinson in 1947, modified by J. Durbin in 1959.
+ */
+
+#include "lpc.h"
+
+float                      /* returns minimum mean square error    */
+wld(
+    float       * lpc, /*      [0...p-1] LPC coefficients      */
+    const float * ac,  /*  in: [0...p] autocorrelation values  */
+    float       * ref, /* out: [0...p-1] reflection coef's     */
+    int p
+    )
+{
+   int i, j;  float r, error = ac[0];
+
+   if (ac[0] == 0) {
+      for (i = 0; i < p; i++) ref[i] = 0; return 0; }
+
+   for (i = 0; i < p; i++) {
+
+      /* Sum up this iteration's reflection coefficient.
+       */
+      r = -ac[i + 1];
+      for (j = 0; j < i; j++) r -= lpc[j] * ac[i - j];
+      ref[i] = r /= error;
+
+      /*  Update LPC coefficients and total error.
+       */
+      lpc[i] = r;
+      for (j = 0; j < i/2; j++) {
+         float tmp  = lpc[j];
+         lpc[j]     += r * lpc[i-1-j];
+         lpc[i-1-j] += r * tmp;
+      }
+      if (i % 2) lpc[j] += lpc[j] * r;
+
+      error *= 1.0 - r * r;
+   }
+   return error;
+}
+
+
+/* Compute the autocorrelation
+ *                      ,--,
+ *              ac(i) = >  x(n) * x(n-i)  for all n
+ *                      `--'
+ * for lags between 0 and lag-1, and x == 0 outside 0...n-1
+ */
+void _spx_autocorr(
+              const float * x,   /*  in: [0...n-1] samples x   */
+              float *ac,   /* out: [0...lag-1] ac values */
+              int lag, int   n)
+{
+   float d; int i;
+   while (lag--) {
+      for (i = lag, d = 0; i < n; i++) d += x[i] * x[i-lag];
+      ac[lag] = d;
+   }
+}