Add m-esr52 at 52.6.0

1 files changed, 150 insertions, 0 deletions

diff --git a/media/pocketsphinx/src/ms_gauden.h b/media/pocketsphinx/src/ms_gauden.h
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+++ b/media/pocketsphinx/src/ms_gauden.h
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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.
+ *
+ * ====================================================================
+ *
+ */
+
+#ifndef _LIBFBS_GAUDEN_H_
+#define _LIBFBS_GAUDEN_H_
+
+/** \file ms_gauden.h
+ * \brief (Sphinx 3.0 specific) Gaussian density module.
+ *
+ * Gaussian density distribution implementation. There are two major
+ * difference bettwen ms_gauden and cont_mgau. One is the fact that
+ * ms_gauden only take cares of the Gaussian computation part where
+ * cont_mgau actually take care of senone computation as well. The
+ * other is the fact that ms_gauden is a multi-stream implementation
+ * of GMM computation.
+ *
+ */
+
+/* SphinxBase headers. */
+#include <sphinxbase/feat.h>
+#include <sphinxbase/logmath.h>
+#include <sphinxbase/cmd_ln.h>
+
+/* Local headers. */
+#include "vector.h"
+#include "pocketsphinx_internal.h"
+#include "hmm.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \struct gauden_dist_t
+ * \brief Structure to store distance (density) values for a given input observation wrt density values in some given codebook.
+ */
+typedef struct {
+    int32 id;		/**< Index of codeword (gaussian density) */
+    mfcc_t dist;		/**< Density value for input observation wrt above codeword;
+                           NOTE: result in logs3 domain, but var_t used for speed */
+
+} gauden_dist_t;
+
+/**
+ * \struct gauden_t
+ * \brief Multivariate gaussian mixture density parameters
+ */
+typedef struct {
+    mfcc_t ****mean;	/**< mean[codebook][feature][codeword] vector */
+    mfcc_t ****var;	/**< like mean; diagonal covariance vector only */
+    mfcc_t ***det;	/**< log(determinant) for each variance vector;
+			   actually, log(sqrt(2*pi*det)) */
+    logmath_t *lmath;   /**< log math computation */
+    int32 n_mgau;	/**< Number codebooks */
+    int32 n_feat;	/**< Number feature streams in each codebook */
+    int32 n_density;	/**< Number gaussian densities in each codebook-feature stream */
+    int32 *featlen;	/**< feature length for each feature */
+} gauden_t;
+
+
+/**
+ * Read mixture gaussian codebooks from the given files.  Allocate memory space needed
+ * for them.  Apply the specified variance floor value.
+ * Return value: ptr to the model created; NULL if error.
+ * (See Sphinx3 model file-format documentation.)
+ */
+gauden_t *
+gauden_init (char const *meanfile,/**< Input: File containing means of mixture gaussians */
+	     char const *varfile,/**< Input: File containing variances of mixture gaussians */
+	     float32 varfloor,	/**< Input: Floor value to be applied to variances */
+             logmath_t *lmath
+    );
+
+/** Release memory allocated by gauden_init. */
+void gauden_free(gauden_t *g); /**< In: The gauden_t to free */
+
+/** Transform Gaussians according to an MLLR matrix (or, eventually, more). */
+int32 gauden_mllr_transform(gauden_t *s, ps_mllr_t *mllr, cmd_ln_t *config);
+
+/**
+ * Compute gaussian density values for the given input observation vector wrt the
+ * specified mixture gaussian codebook (which may consist of several feature streams).
+ * Density values are left UNnormalized.
+ * @return 0 if successful, -1 otherwise.
+ */
+int32
+gauden_dist (gauden_t *g,	/**< In: handle to entire ensemble of codebooks */
+	     int mgau,		/**< In: codebook for which density values to be evaluated
+				   (g->{mean,var}[mgau]) */
+	     int n_top,		/**< In: Number top densities to be evaluated */
+	     mfcc_t **obs,	/**< In: Observation vector; obs[f] = for feature f */
+	     gauden_dist_t **out_dist
+	     /**< Out: n_top best codewords and density values,
+		in worsening order, for each feature stream.
+		out_dist[f][i] = i-th best density for feature f.
+		Caller must allocate memory for this output */
+    );
+
+/**
+   Dump the definitionn of Gaussian distribution. 
+*/
+void gauden_dump (const gauden_t *g  /**< In: Gaussian distribution g*/
+    );
+
+/**
+   Dump the definition of Gaussian distribution of a particular index to the standard output stream
+*/
+void gauden_dump_ind (const gauden_t *g,  /**< In: Gaussian distribution g*/
+		      int senidx          /**< In: The senone index of the Gaussian */
+    );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GAUDEN_H */