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/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* ====================================================================
* Copyright (c) 2009 Carnegie Mellon University. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* This work was supported in part by funding from the Defense Advanced
* Research Projects Agency and the National Science Foundation of the
* United States of America, and the CMU Sphinx Speech Consortium.
*
* THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
* ANY EXPRESSED 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 CARNEGIE MELLON UNIVERSITY
* NOR ITS EMPLOYEES 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.
*
* ====================================================================
*
*/
/**
* \file sphinx_lm_convert.c
* Language model conversion tool.
*/
#include <pocketsphinx.h>
#include "pocketsphinx_internal.h"
#include "lm/ngram_model.h"
#include "util/ckd_alloc.h"
#include "util/cmd_ln.h"
#include "util/ckd_alloc.h"
#include "util/pio.h"
#include "util/strfuncs.h"
#include <stdio.h>
#include <string.h>
#include <math.h>
static const ps_arg_t defn[] = {
{ "help",
ARG_BOOLEAN,
"no",
"Shows the usage of the tool"},
{ "logbase",
ARG_FLOATING,
"1.0001",
"Base in which all log-likelihoods calculated" },
{ "i",
REQARG_STRING,
NULL,
"Input language model file (required)"},
{ "o",
REQARG_STRING,
NULL,
"Output language model file (required)"},
{ "ifmt",
ARG_STRING,
NULL,
"Input language model format (will guess if not specified)"},
{ "ofmt",
ARG_STRING,
NULL,
"Output language model file (will guess if not specified)"},
{ "case",
ARG_STRING,
NULL,
"Ether 'lower' or 'upper' - case fold to lower/upper case (NOT UNICODE AWARE)" },
{ "mmap",
ARG_BOOLEAN,
"no",
"Use memory-mapped I/O for reading binary LM files"},
{ NULL, 0, NULL, NULL }
};
static void
usagemsg(char *pgm)
{
E_INFO("Usage: %s -i <input.lm> \\\n", pgm);
E_INFOCONT("\t[-ifmt txt] [-ofmt dmp]\n");
E_INFOCONT("\t-o <output.lm.DMP>\n");
exit(0);
}
int
main(int argc, char *argv[])
{
cmd_ln_t *config;
ngram_model_t *lm = NULL;
logmath_t *lmath;
int itype, otype;
char const *kase;
if ((config = cmd_ln_parse_r(NULL, defn, argc, argv, TRUE)) == NULL) {
/* This probably just means that we got no arguments. */
err_set_loglevel(ERR_INFO);
cmd_ln_log_help_r(NULL, defn);
return 1;
}
if (ps_config_bool(config, "help")) {
usagemsg(argv[0]);
}
/* Create log math object. */
if ((lmath = logmath_init
(ps_config_float(config, "logbase"), 0, 0)) == NULL) {
E_FATAL("Failed to initialize log math\n");
}
if (ps_config_str(config, "i") == NULL || ps_config_str(config, "i") == NULL) {
E_ERROR("Please specify both input and output models\n");
goto error_out;
}
/* Load the input language model. */
if (ps_config_str(config, "ifmt")) {
if ((itype = ngram_str_to_type(ps_config_str(config, "ifmt")))
== NGRAM_INVALID) {
E_ERROR("Invalid input type %s\n", ps_config_str(config, "ifmt"));
goto error_out;
}
lm = ngram_model_read(config, ps_config_str(config, "i"),
itype, lmath);
}
else {
lm = ngram_model_read(config, ps_config_str(config, "i"),
NGRAM_AUTO, lmath);
}
if (lm == NULL) {
E_ERROR("Failed to read the model from the file '%s'\n", ps_config_str(config, "i"));
goto error_out;
}
/* Guess or set the output language model type. */
if (ps_config_str(config, "ofmt")) {
if ((otype = ngram_str_to_type(ps_config_str(config, "ofmt")))
== NGRAM_INVALID) {
E_ERROR("Invalid output type %s\n", ps_config_str(config, "ofmt"));
goto error_out;
}
}
else {
otype = ngram_file_name_to_type(ps_config_str(config, "o"));
}
/* Case fold if requested. */
if ((kase = ps_config_str(config, "case"))) {
if (0 == strcmp(kase, "lower")) {
ngram_model_casefold(lm, NGRAM_LOWER);
}
else if (0 == strcmp(kase, "upper")) {
ngram_model_casefold(lm, NGRAM_UPPER);
}
else {
E_ERROR("Unknown value for -case: %s\n", kase);
goto error_out;
}
}
/* Write the output language model. */
if (ngram_model_write(lm, ps_config_str(config, "o"), otype) != 0) {
E_ERROR("Failed to write language model in format %s to %s\n",
ngram_type_to_str(otype), ps_config_str(config, "o"));
goto error_out;
}
/* That's all folks! */
ngram_model_free(lm);
if (lmath) {
logmath_free(lmath);
}
if (config) {
ps_config_free(config);
}
return 0;
error_out:
ngram_model_free(lm);
if (lmath) {
logmath_free(lmath);
}
if (config) {
ps_config_free(config);
}
return 1;
}
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