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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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+/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* ====================================================================
+ * Copyright (c) 1999-2004 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.
+ *
+ * ====================================================================
+ *
+ */
+/*
+ * Interface for "semi-continuous vector quantization", a.k.a. Sphinx2
+ * fast GMM computation.
+ */
+
+#ifndef __S2_SEMI_MGAU_H__
+#define __S2_SEMI_MGAU_H__
+
+/* SphinxBase headesr. */
+#include <sphinxbase/fe.h>
+#include <sphinxbase/logmath.h>
+#include <sphinxbase/mmio.h>
+
+/* Local headers. */
+#include "acmod.h"
+#include "hmm.h"
+#include "bin_mdef.h"
+#include "ms_gauden.h"
+
+typedef struct vqFeature_s vqFeature_t;
+
+typedef struct s2_semi_mgau_s s2_semi_mgau_t;
+struct s2_semi_mgau_s {
+ ps_mgau_t base; /**< base structure. */
+ cmd_ln_t *config; /* configuration parameters */
+
+ gauden_t *g; /* Set of Gaussians (pointers below point in here and will go away soon) */
+
+ uint8 ***mixw; /* mixture weight distributions */
+ mmio_file_t *sendump_mmap;/* memory map for mixw (or NULL if not mmap) */
+
+ uint8 *mixw_cb; /* mixture weight codebook, if any (assume it contains 16 values) */
+ int32 n_sen; /* Number of senones */
+ uint8 *topn_beam; /* Beam for determining per-frame top-N densities */
+ int16 max_topn;
+ int16 ds_ratio;
+
+ vqFeature_t ***topn_hist; /**< Top-N scores and codewords for past frames. */
+ uint8 **topn_hist_n; /**< Variable top-N for past frames. */
+ vqFeature_t **f; /**< Topn-N for currently scoring frame. */
+ int n_topn_hist; /**< Number of past frames tracked. */
+
+ /* Log-add table for compressed values. */
+ logmath_t *lmath_8b;
+ /* Log-add object for reloading means/variances. */
+ logmath_t *lmath;
+};
+
+ps_mgau_t *s2_semi_mgau_init(acmod_t *acmod);
+void s2_semi_mgau_free(ps_mgau_t *s);
+int s2_semi_mgau_frame_eval(ps_mgau_t *s,
+ int16 *senone_scores,
+ uint8 *senone_active,
+ int32 n_senone_active,
+ mfcc_t **featbuf,
+ int32 frame,
+ int32 compallsen);
+int s2_semi_mgau_mllr_transform(ps_mgau_t *s,
+ ps_mllr_t *mllr);
+
+
+#endif /* __S2_SEMI_MGAU_H__ */