1 files changed, 0 insertions, 81 deletions
diff --git a/libavcodec/qcelp_lsp.c b/libavcodec/qcelp_lsp.c
deleted file mode 100644
index 6823ad8069..0000000000
--- a/libavcodec/qcelp_lsp.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * QCELP decoder
- * Copyright (c) 2007 Reynaldo H. Verdejo Pinochet
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file libavcodec/qcelp_lsp.c
- * QCELP decoder
- * @author Reynaldo H. Verdejo Pinochet
- * @remark FFmpeg merging spearheaded by Kenan Gillet
- * @remark Development mentored by Benjamin Larson
- */
-
-#include "libavutil/mathematics.h"
-
-/**
- * Computes the Pa / (1 + z(-1)) or Qa / (1 - z(-1)) coefficients
- * needed for LSP to LPC conversion.
- * We only need to calculate the 6 first elements of the polynomial.
- *
- * @param lsp line spectral pairs in cosine domain
- * @param f [out] polynomial input/output as a vector
- *
- * TIA/EIA/IS-733 2.4.3.3.5-1/2
- */
-static void lsp2polyf(const double *lsp, double *f, int lp_half_order)
-{
-    int i, j;
-
-    f[0] = 1.0;
-    f[1] = -2 * lsp[0];
-    lsp -= 2;
-    for(i=2; i<=lp_half_order; i++)
-    {
-        double val = -2 * lsp[2*i];
-        f[i] = val * f[i-1] + 2*f[i-2];
-        for(j=i-1; j>1; j--)
-            f[j] += f[j-1] * val + f[j-2];
-        f[1] += val;
-    }
-}
-
-/**
- * Reconstructs LPC coefficients from the line spectral pair frequencies.
- *
- * @param lsp line spectral pairs in cosine domain
- * @param lpc linear predictive coding coefficients
- */
-void ff_acelp_lspd2lpc(const double *lsp, float *lpc)
-{
-    double pa[6], qa[6];
-    int   i;
-
-    lsp2polyf(lsp,     pa, 5);
-    lsp2polyf(lsp + 1, qa, 5);
-
-    for (i=4; i>=0; i--)
-    {
-        double paf = pa[i+1] + pa[i];
-        double qaf = qa[i+1] - qa[i];
-
-        lpc[i  ] = 0.5*(paf+qaf);
-        lpc[9-i] = 0.5*(paf-qaf);
-    }
-}