i've tested, now you can too

libs/libcodec2/src/genlspdtcb.c

@@ -0,0 +1,90 @@
+/*---------------------------------------------------------------------------*\
+                                                                             
+  FILE........: genlspdtcb.c
+  AUTHOR......: David Rowe                                                     
+  DATE CREATED: 2 Nov 2011
+                                                                             
+  Generates codebooks (quantisation tables) for LSP delta-T VQ.
+                                                                             
+\*---------------------------------------------------------------------------*/
+
+/*
+  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 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, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#define MAX_ROWS 10
+
+float lsp1to4[] = {
+    -25,0,25,
+    -25,0,25,
+    -50,0,50,
+    -50,0,50
+};
+
+float lsp5to10[] = {
+    -50,0,50,
+    -50,0,50,
+    -50,0,50,
+    -50,0,50,
+    -50,0,50,
+    -50,0,50
+};
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+void create_codebook_text_file(char filename[], float lsp[], 
+			       int rows, int cols);
+
+int main(void) {
+    create_codebook_text_file("codebook/lspdt1-4.txt",  lsp1to4,  4, 3);
+    create_codebook_text_file("codebook/lspdt5-10.txt", lsp5to10, 6, 3); 
+    return 0;
+}
+
+void create_codebook_text_file(char filename[], float lsp[], 
+			       int rows, int cols) 
+{
+    FILE *f;
+    int   i, digits[MAX_ROWS]; 
+
+    f = fopen(filename, "wt");
+    if (f == NULL) {
+	printf("Can't open codebook text file %s\n", filename);
+	exit(0);
+    }
+
+    for(i=0; i<rows; i++)
+	digits[i] = 0;
+
+    fprintf(f, "%d %d\n", rows, (int)pow(cols, rows));
+
+    do {
+	for(i=0; i<rows; i++)
+	    fprintf(f, "%4.0f ", lsp[cols*i + digits[i]]);
+	fprintf(f, "\n");
+	digits[0]++;
+	for(i=0; i<rows-1; i++)
+	    if (digits[i]== cols) {
+		digits[i] = 0;
+		digits[i+1]++;
+	    }
+    } while (digits[rows-1] != cols);
+	
+    fclose(f);
+}