Add m-esr52 at 52.6.0

1 files changed, 102 insertions, 0 deletions

diff --git a/media/pocketsphinx/src/phone_loop_search.h b/media/pocketsphinx/src/phone_loop_search.h
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index 000000000..db776e9b1
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+++ b/media/pocketsphinx/src/phone_loop_search.h
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+/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* ====================================================================
+ * Copyright (c) 2008 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 phone_loop_search.h Fast and rough context-independent
+ * phoneme loop search.
+ *
+ * This exists for the purposes of phoneme lookahead, and thus it
+ * actually does not do phoneme recognition (it wouldn't be very
+ * accurate anyway).
+ */
+
+#ifndef __PHONE_LOOP_SEARCH_H__
+#define __PHONE_LOOP_SEARCH_H__
+
+/* SphinxBase headers. */
+#include <sphinxbase/cmd_ln.h>
+#include <sphinxbase/logmath.h>
+#include <sphinxbase/ngram_model.h>
+#include <sphinxbase/listelem_alloc.h>
+
+/* Local headers. */
+#include "pocketsphinx_internal.h"
+#include "hmm.h"
+
+/**
+ * Renormalization event.
+ */
+struct phone_loop_renorm_s {
+    int frame_idx;  /**< Frame of renormalization. */
+    int32 norm;     /**< Normalization constant. */
+};
+typedef struct phone_loop_renorm_s phone_loop_renorm_t;
+
+/**
+ * Phone loop search structure.
+ */
+struct phone_loop_search_s {
+    ps_search_t base;                  /**< Base search structure. */
+    hmm_t *hmms;                       /**< Basic HMM structures for CI phones. */
+    hmm_context_t *hmmctx;             /**< HMM context structure. */
+    int16 frame;                       /**< Current frame being searched. */
+    int16 n_phones;                    /**< Size of phone array. */
+    int32 **pen_buf;                /**< Penalty buffer */
+    int16 pen_buf_ptr;                 /**< Pointer for frame to fill in penalty buffer */
+    int32 *penalties;                  /**< Penalties for CI phones in current frame */
+    float64 penalty_weight;            /**< Weighting factor for penalties */
+
+    int32 best_score;                  /**< Best Viterbi score in current frame. */
+    int32 beam;                        /**< HMM pruning beam width. */
+    int32 pbeam;                       /**< Phone exit pruning beam width. */
+    int32 pip;                         /**< Phone insertion penalty ("language score"). */
+    int window;                        /**< Window size for phoneme lookahead */
+    glist_t renorm;                    /**< List of renormalizations. */
+};
+typedef struct phone_loop_search_s phone_loop_search_t;
+
+ps_search_t *phone_loop_search_init(cmd_ln_t *config,
+                                    acmod_t *acmod,
+                                    dict_t *dict);
+
+/**
+ * Return lookahead heuristic score for a specific phone.
+ */
+#define phone_loop_search_score(pls,ci) \
+    ((pls == NULL) ? 0 : (pls->penalties[ci]))
+
+#endif /* __PHONE_LOOP_SEARCH_H__ */