diff options
Diffstat (limited to 'media/pocketsphinx/src/ptm_mgau.h')
| -rw-r--r-- | media/pocketsphinx/src/ptm_mgau.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/media/pocketsphinx/src/ptm_mgau.h b/media/pocketsphinx/src/ptm_mgau.h new file mode 100644 index 000000000..0b3ac6359 --- /dev/null +++ b/media/pocketsphinx/src/ptm_mgau.h @@ -0,0 +1,103 @@ +/* -*- 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 ptm_mgau.h Fast phonetically-tied mixture evaluation. + * @author David Huggins-Daines <dhuggins@cs.cmu.edu> + */ + +#ifndef __PTM_MGAU_H__ +#define __PTM_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 ptm_mgau_s ptm_mgau_t; + +typedef struct ptm_topn_s { + int32 cw; /**< Codeword index. */ + int32 score; /**< Score. */ +} ptm_topn_t; + +typedef struct ptm_fast_eval_s { + ptm_topn_t ***topn; /**< Top-N for each codebook (mgau x feature x topn) */ + bitvec_t *mgau_active; /**< Set of active codebooks */ +} ptm_fast_eval_t; + +struct ptm_mgau_s { + ps_mgau_t base; /**< base structure. */ + cmd_ln_t *config; /**< Configuration parameters */ + gauden_t *g; /**< Set of Gaussians. */ + int32 n_sen; /**< Number of senones. */ + uint8 *sen2cb; /**< Senone to codebook mapping. */ + uint8 ***mixw; /**< Mixture weight distributions by feature, codeword, senone */ + 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) */ + int16 max_topn; + int16 ds_ratio; + + ptm_fast_eval_t *hist; /**< Fast evaluation info for past frames. */ + ptm_fast_eval_t *f; /**< Fast eval info for current frame. */ + int n_fast_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 *ptm_mgau_init(acmod_t *acmod, bin_mdef_t *mdef); +void ptm_mgau_free(ps_mgau_t *s); +int ptm_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 ptm_mgau_mllr_transform(ps_mgau_t *s, + ps_mllr_t *mllr); + + +#endif /* __PTM_MGAU_H__ */ |