/* -*- 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 ps_mllr.c Model-space linear transforms for speaker adaptation */ /* System headers. */ #include <stdio.h> /* SphinxBase headers. */ #include <sphinxbase/ckd_alloc.h> /* Local headers. */ #include "acmod.h" ps_mllr_t * ps_mllr_read(char const *regmatfile) { ps_mllr_t *mllr; FILE *fp; int n, i, m, j, k; mllr = ckd_calloc(1, sizeof(*mllr)); mllr->refcnt = 1; if ((fp = fopen(regmatfile, "r")) == NULL) { E_ERROR_SYSTEM("Failed to open MLLR file '%s' for reading", regmatfile); goto error_out; } else E_INFO("Reading MLLR transformation file '%s'\n", regmatfile); if ((fscanf(fp, "%d", &n) != 1) || (n < 1)) { E_ERROR("Failed to read number of MLLR classes\n"); goto error_out; } mllr->n_class = n; if ((fscanf(fp, "%d", &n) != 1)) { E_ERROR("Failed to read number of feature streams\n"); goto error_out; } mllr->n_feat = n; mllr->veclen = ckd_calloc(mllr->n_feat, sizeof(*mllr->veclen)); mllr->A = (float32 ****) ckd_calloc(mllr->n_feat, sizeof(float32 **)); mllr->b = (float32 ***) ckd_calloc(mllr->n_feat, sizeof(float32 *)); mllr->h = (float32 ***) ckd_calloc(mllr->n_feat, sizeof(float32 *)); for (i = 0; i < mllr->n_feat; ++i) { if (fscanf(fp, "%d", &n) != 1) { E_ERROR("Failed to read stream length for feature %d\n", i); goto error_out; } mllr->veclen[i] = n; mllr->A[i] = (float32 ***) ckd_calloc_3d(mllr->n_class, mllr->veclen[i], mllr->veclen[i], sizeof(float32)); mllr->b[i] = (float32 **) ckd_calloc_2d(mllr->n_class, mllr->veclen[i], sizeof(float32)); mllr->h[i] = (float32 **) ckd_calloc_2d(mllr->n_class, mllr->veclen[i], sizeof(float32)); for (m = 0; m < mllr->n_class; ++m) { for (j = 0; j < mllr->veclen[i]; ++j) { for (k = 0; k < mllr->veclen[i]; ++k) { if (fscanf(fp, "%f ", &mllr->A[i][m][j][k]) != 1) { E_ERROR("Failed reading MLLR rotation (%d,%d,%d,%d)\n", i, m, j, k); goto error_out; } } } for (j = 0; j < mllr->veclen[i]; ++j) { if (fscanf(fp, "%f ", &mllr->b[i][m][j]) != 1) { E_ERROR("Failed reading MLLR bias (%d,%d,%d)\n", i, m, j); goto error_out; } } for (j = 0; j < mllr->veclen[i]; ++j) { if (fscanf(fp, "%f ", &mllr->h[i][m][j]) != 1) { E_ERROR("Failed reading MLLR variance scale (%d,%d,%d)\n", i, m, j); goto error_out; } } } } fclose(fp); return mllr; error_out: if (fp) fclose(fp); ps_mllr_free(mllr); return NULL; } ps_mllr_t * ps_mllr_retain(ps_mllr_t *mllr) { ++mllr->refcnt; return mllr; } int ps_mllr_free(ps_mllr_t *mllr) { int i; if (mllr == NULL) return 0; if (--mllr->refcnt > 0) return mllr->refcnt; for (i = 0; i < mllr->n_feat; ++i) { if (mllr->A) ckd_free_3d(mllr->A[i]); if (mllr->b) ckd_free_2d(mllr->b[i]); if (mllr->h) ckd_free_2d(mllr->h[i]); } ckd_free(mllr->veclen); ckd_free(mllr->A); ckd_free(mllr->b); ckd_free(mllr->h); ckd_free(mllr); return 0; }