Add m-esr52 at 52.6.0

1 files changed, 136 insertions, 0 deletions

diff --git a/media/pocketsphinx/src/kws_search.h b/media/pocketsphinx/src/kws_search.h
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+++ b/media/pocketsphinx/src/kws_search.h
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+/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* ====================================================================
+ * Copyright (c) 2013 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 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.
+ *
+ * ====================================================================
+ *
+ */
+
+/*
+ * kws_search.h -- Search structures for keyword spotting.
+ */
+
+#ifndef __KWS_SEARCH_H__
+#define __KWS_SEARCH_H__
+
+/* SphinxBase headers. */
+#include <sphinxbase/glist.h>
+#include <sphinxbase/cmd_ln.h>
+
+/* Local headers. */
+#include "pocketsphinx_internal.h"
+#include "kws_detections.h"
+#include "hmm.h"
+
+/**
+ * Segmentation "iterator" for KWS history.
+ */
+typedef struct kws_seg_s {
+    ps_seg_t base;       /**< Base structure. */
+    gnode_t *detection;  /**< Keyword detection correspondent to segment. */
+} kws_seg_t;
+
+typedef struct kws_keyword_s {
+    char* word;
+    int32 threshold;
+    hmm_t* hmms;
+    int32 n_hmms;
+} kws_keyword_t;
+
+/**
+ * Implementation of KWS search structure.
+ */
+typedef struct kws_search_s {
+    ps_search_t base;
+
+    hmm_context_t *hmmctx;        /**< HMM context. */
+
+    kws_detections_t *detections; /**< Keyword spotting history */
+    kws_keyword_t* keyphrases;   /**< Keyphrases to spot */
+    int n_keyphrases;             /**< Keyphrases amount */
+    frame_idx_t frame;            /**< Frame index */
+
+    int32 beam;
+
+    int32 plp;                    /**< Phone loop probability */
+    int32 bestscore;              /**< For beam pruning */
+    int32 def_threshold;          /**< default threshold for p(hyp)/p(altern) ratio */
+
+    int32 n_pl;                   /**< Number of CI phones */
+    hmm_t *pl_hmms;               /**< Phone loop hmms - hmms of CI phones */
+
+} kws_search_t;
+
+/**
+ * Create, initialize and return a search module. Gets keywords either
+ * from keyphrase or from a keyphrase file.
+ */
+ps_search_t *kws_search_init(const char *keyphrase,
+			     const char *keyfile,
+                             cmd_ln_t * config,
+                             acmod_t * acmod,
+                             dict_t * dict, dict2pid_t * d2p);
+
+/**
+ * Deallocate search structure.
+ */
+void kws_search_free(ps_search_t * search);
+
+/**
+ * Update KWS search module for new key phrase.
+ */
+int kws_search_reinit(ps_search_t * kwss, dict_t * dict, dict2pid_t * d2p);
+
+/**
+ * Prepare the KWS search structure for beginning decoding of the next
+ * utterance.
+ */
+int kws_search_start(ps_search_t * search);
+
+/**
+ * Step one frame forward through the Viterbi search.
+ */
+int kws_search_step(ps_search_t * search, int frame_idx);
+
+/**
+ * Windup and clean the KWS search structure after utterance.
+ */
+int kws_search_finish(ps_search_t * search);
+
+/**
+ * Get hypothesis string from the KWS search.
+ */
+char const *kws_search_hyp(ps_search_t * search, int32 * out_score,
+                           int32 * out_is_final);
+/**
+ * Get active keyphrases
+ */
+char* kws_search_get_keywords(ps_search_t * search);
+
+#endif                          /* __KWS_SEARCH_H__ */