91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/*---------------------------------------------------------------------------*\
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FILE........: genlspdtcb.c
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AUTHOR......: David Rowe
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DATE CREATED: 2 Nov 2011
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Generates codebooks (quantisation tables) for LSP delta-T VQ.
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\*---------------------------------------------------------------------------*/
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/*
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All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 2.1, as
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published by the Free Software Foundation. This program is
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distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#define MAX_ROWS 10
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float lsp1to4[] = {
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-25,0,25,
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-25,0,25,
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-50,0,50,
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-50,0,50
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};
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float lsp5to10[] = {
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-50,0,50,
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-50,0,50,
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-50,0,50,
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-50,0,50,
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-50,0,50,
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-50,0,50
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};
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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void create_codebook_text_file(char filename[], float lsp[],
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int rows, int cols);
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int main(void) {
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create_codebook_text_file("codebook/lspdt1-4.txt", lsp1to4, 4, 3);
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create_codebook_text_file("codebook/lspdt5-10.txt", lsp5to10, 6, 3);
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return 0;
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}
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void create_codebook_text_file(char filename[], float lsp[],
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int rows, int cols)
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{
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FILE *f;
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int i, digits[MAX_ROWS];
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f = fopen(filename, "wt");
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if (f == NULL) {
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printf("Can't open codebook text file %s\n", filename);
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exit(0);
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}
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for(i=0; i<rows; i++)
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digits[i] = 0;
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fprintf(f, "%d %d\n", rows, (int)pow(cols, rows));
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do {
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for(i=0; i<rows; i++)
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fprintf(f, "%4.0f ", lsp[cols*i + digits[i]]);
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fprintf(f, "\n");
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digits[0]++;
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for(i=0; i<rows-1; i++)
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if (digits[i]== cols) {
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digits[i] = 0;
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digits[i+1]++;
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}
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} while (digits[rows-1] != cols);
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fclose(f);
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}
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