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Diffstat (limited to 'media/pocketsphinx/src/tied_mgau_common.h')
| -rw-r--r-- | media/pocketsphinx/src/tied_mgau_common.h | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/media/pocketsphinx/src/tied_mgau_common.h b/media/pocketsphinx/src/tied_mgau_common.h deleted file mode 100644 index c8c532084..000000000 --- a/media/pocketsphinx/src/tied_mgau_common.h +++ /dev/null @@ -1,121 +0,0 @@ -/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */ -/* ==================================================================== - * Copyright (c) 1999-2010 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 tied_mgau_common.h - * @brief Common code shared between SC and PTM (tied-state) models. - */ - -#ifndef __TIED_MGAU_COMMON_H__ -#define __TIED_MGAU_COMMON_H__ - -#include <sphinxbase/logmath.h> -#include <sphinxbase/fixpoint.h> - -#define MGAU_MIXW_VERSION "1.0" /* Sphinx-3 file format version for mixw */ -#define MGAU_PARAM_VERSION "1.0" /* Sphinx-3 file format version for mean/var */ -#define NONE -1 -#define WORST_DIST (int32)(0x80000000) - -/** Subtract GMM component b (assumed to be positive) and saturate */ -#ifdef FIXED_POINT -#define GMMSUB(a,b) \ - (((a)-(b) > a) ? (INT_MIN) : ((a)-(b))) -/** Add GMM component b (assumed to be positive) and saturate */ -#define GMMADD(a,b) \ - (((a)+(b) < a) ? (INT_MAX) : ((a)+(b))) -#else -#define GMMSUB(a,b) ((a)-(b)) -#define GMMADD(a,b) ((a)+(b)) -#endif - -#ifndef MIN -#define MIN(a,b) ((a) < (b) ? (a) : (b)) -#endif - - -#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) -#define LOGMATH_INLINE static inline -#elif defined(_MSC_VER) -#define LOGMATH_INLINE __inline -#else -#define LOGMATH_INLINE static -#endif - -/* Allocate 0..159 for negated quantized mixture weights and 0..96 for - * negated normalized acoustic scores, so that the combination of the - * two (for a single mixture) can never exceed 255. */ -#define MAX_NEG_MIXW 159 /**< Maximum negated mixture weight value. */ -#define MAX_NEG_ASCR 96 /**< Maximum negated acoustic score value. */ - -/** - * Quickly log-add two negated log probabilities. - * - * @param lmath The log-math object - * @param mlx A negative log probability (0 < mlx < 255) - * @param mly A negative log probability (0 < mly < 255) - * @return -log(exp(-mlx)+exp(-mly)) - * - * We can do some extra-fast log addition since we know that - * mixw+ascr is always less than 256 and hence x-y is also always less - * than 256. This relies on some cooperation from logmath_t which - * will never produce a logmath table smaller than 256 entries. - * - * Note that the parameters are *negated* log probabilities (and - * hence, are positive numbers), as is the return value. This is the - * key to the "fastness" of this function. - */ -LOGMATH_INLINE int -fast_logmath_add(logmath_t *lmath, int mlx, int mly) -{ - logadd_t *t = LOGMATH_TABLE(lmath); - int d, r; - - /* d must be positive, obviously. */ - if (mlx > mly) { - d = (mlx - mly); - r = mly; - } - else { - d = (mly - mlx); - r = mlx; - } - - return r - (((uint8 *)t->table)[d]); -} - -#endif /* __TIED_MGAU_COMMON_H__ */ |