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 * This work was supported in part by funding from the Defense Advanced 
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 * United States of America, and the CMU Sphinx Speech Consortium.
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/*
 * \file ngram_model_dmp32.c DMP32 format language models
 *
 * Author: David Huggins-Daines <dhuggins@cs.cmu.edu>
 */

#include "ckd_alloc.h"
#include "ngram_model_internal.h"

static ngram_funcs_t ngram_model_dmp32_funcs;

ngram_model_t *
ngram_model_dmp32_read(cmd_ln_t *config,
                       const char *file_name,
                       logmath_t *lmath)
{
    ngram_model_t *model;

    model = ckd_calloc(1, sizeof(*model));
    model->funcs = &ngram_model_dmp32_funcs;
    return model;
}

int
ngram_model_dmp32_write(ngram_model_t *model,
                        const char *file_name)
{
    return -1;
}

static int
ngram_model_dmp32_apply_weights(ngram_model_t *model, float32 lw,
                              float32 wip, float32 uw)
{
    return 0;
}

static int32
ngram_model_dmp32_score(ngram_model_t *model, int32 wid,
                        int32 *history, int32 n_hist,
                        int32 *n_used)
{
    return model->log_zero;
}

static int32
ngram_model_dmp32_raw_score(ngram_model_t *model, int32 wid,
                            int32 *history, int32 n_hist,
                            int32 *n_used)
{
    return model->log_zero;
}

static void
ngram_model_dmp32_free(ngram_model_t *base)
{
    ckd_free(base);
}

static ngram_funcs_t ngram_model_dmp32_funcs = {
    ngram_model_dmp32_free,          /* free */
    ngram_model_dmp32_apply_weights, /* apply_weights */
    ngram_model_dmp32_score,         /* score */
    ngram_model_dmp32_raw_score,     /* raw_score */
    NULL                             /* add_ug */
};
