diff options
Diffstat (limited to 'media/sphinxbase/src/libsphinxbase/fe/fe_prespch_buf.c')
| -rw-r--r-- | media/sphinxbase/src/libsphinxbase/fe/fe_prespch_buf.c | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/media/sphinxbase/src/libsphinxbase/fe/fe_prespch_buf.c b/media/sphinxbase/src/libsphinxbase/fe/fe_prespch_buf.c deleted file mode 100644 index 028c09ac5..000000000 --- a/media/sphinxbase/src/libsphinxbase/fe/fe_prespch_buf.c +++ /dev/null @@ -1,182 +0,0 @@ -/* -*- 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 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. -* -* ==================================================================== -* -*/ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <stdio.h> -#include <string.h> -#include <assert.h> - -#include "sphinxbase/ckd_alloc.h" -#include "sphinxbase/err.h" - -#include "fe_prespch_buf.h" - -struct prespch_buf_s { - /* saved mfcc frames */ - mfcc_t **cep_buf; - /* saved pcm audio */ - int16 *pcm_buf; - /* flag for pcm buffer initialization */ - int16 cep_write_ptr; - /* read pointer for cep buffer */ - int16 cep_read_ptr; - /* write pointer for pcm buffer */ - int16 pcm_write_ptr; - /* frames amount in cep buffer */ - int16 num_frames_cep; - /* frames amount in pcm buffer */ - int16 num_frames_pcm; - /* filters amount */ - int16 num_cepstra; - /* amount of fresh samples in frame */ - int16 num_samples; -}; - -prespch_buf_t * -fe_prespch_init(int num_frames, int num_cepstra, int num_samples) -{ - prespch_buf_t *prespch_buf; - - prespch_buf = (prespch_buf_t *) ckd_calloc(1, sizeof(prespch_buf_t)); - - prespch_buf->num_cepstra = num_cepstra; - prespch_buf->num_frames_cep = num_frames; - prespch_buf->num_samples = num_samples; - prespch_buf->num_frames_pcm = 0; - prespch_buf->cep_write_ptr = 0; - prespch_buf->cep_read_ptr = 0; - prespch_buf->pcm_write_ptr = 0; - - prespch_buf->cep_buf = (mfcc_t **) - ckd_calloc_2d(num_frames, num_cepstra, - sizeof(**prespch_buf->cep_buf)); - - return prespch_buf; -} - -void -fe_prespch_extend_pcm(prespch_buf_t* prespch_buf, int num_frames_pcm) -{ - num_frames_pcm += prespch_buf->num_frames_cep + 1; - if (num_frames_pcm > prespch_buf->num_frames_pcm) { - prespch_buf->num_frames_pcm = num_frames_pcm; - prespch_buf->pcm_buf = (int16 *) ckd_realloc(prespch_buf->pcm_buf, prespch_buf->num_frames_pcm * prespch_buf->num_samples * sizeof(int16)); - } -} - -int -fe_prespch_read_cep(prespch_buf_t * prespch_buf, mfcc_t * fea) -{ - if (prespch_buf->cep_read_ptr >= prespch_buf->num_frames_cep) - return 0; - if (prespch_buf->cep_read_ptr >= prespch_buf->cep_write_ptr) - return 0; - memcpy(fea, prespch_buf->cep_buf[prespch_buf->cep_read_ptr], - sizeof(mfcc_t) * prespch_buf->num_cepstra); - prespch_buf->cep_read_ptr++; - return 1; -} - -void -fe_prespch_write_cep(prespch_buf_t * prespch_buf, mfcc_t * fea) -{ - assert(prespch_buf->cep_write_ptr < prespch_buf->num_frames_cep); - memcpy(prespch_buf->cep_buf[prespch_buf->cep_write_ptr], fea, - sizeof(mfcc_t) * prespch_buf->num_cepstra); - prespch_buf->cep_write_ptr++; -} - -void -fe_prespch_read_pcm(prespch_buf_t * prespch_buf, int16 ** samples, - int32 * samples_num) -{ - if (!prespch_buf->pcm_buf) { - /* pcm prespch buffer isn't initialized yet */ - samples = NULL; - *samples_num = 0; - return; - } - *samples = prespch_buf->pcm_buf; - *samples_num = prespch_buf->pcm_write_ptr * prespch_buf->num_samples; - prespch_buf->pcm_write_ptr = 0; -} - -void -fe_prespch_write_pcm(prespch_buf_t * prespch_buf, int16 * samples) -{ - int32 sample_ptr; - - assert(prespch_buf->pcm_write_ptr < prespch_buf->num_frames_pcm); - sample_ptr = prespch_buf->pcm_write_ptr * prespch_buf->num_samples; - memcpy(&prespch_buf->pcm_buf[sample_ptr], samples, - prespch_buf->num_samples * sizeof(int16)); - prespch_buf->pcm_write_ptr++; -} - -void -fe_prespch_reset_cep(prespch_buf_t * prespch_buf) -{ - prespch_buf->cep_read_ptr = 0; - prespch_buf->cep_write_ptr = 0; -} - -void -fe_prespch_reset_pcm(prespch_buf_t * prespch_buf) -{ - prespch_buf->pcm_write_ptr = 0; -} - -void -fe_prespch_free(prespch_buf_t * prespch_buf) -{ - if (!prespch_buf) - return; - if (prespch_buf->cep_buf) - ckd_free_2d((void **) prespch_buf->cep_buf); - if (prespch_buf->pcm_buf) - ckd_free(prespch_buf->pcm_buf); - ckd_free(prespch_buf); -} - -int32 -fe_prespch_ncep(prespch_buf_t * prespch_buf) -{ - return prespch_buf->cep_write_ptr - prespch_buf->cep_read_ptr; -} |