510 lines
19 KiB
C
510 lines
19 KiB
C
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/* ----------------------------------------------------------------- */
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/* The HMM-Based Speech Synthesis Engine "hts_engine API" */
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/* developed by HTS Working Group */
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/* http://hts-engine.sourceforge.net/ */
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/* ----------------------------------------------------------------- */
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/* */
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/* Copyright (c) 2001-2013 Nagoya Institute of Technology */
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/* Department of Computer Science */
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/* */
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/* 2001-2008 Tokyo Institute of Technology */
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/* Interdisciplinary Graduate School of */
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/* Science and Engineering */
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/* */
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/* All rights reserved. */
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/* */
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/* Redistribution and use in source and binary forms, with or */
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/* without modification, are permitted provided that the following */
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/* conditions are met: */
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/* */
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/* - Redistributions of source code must retain the above copyright */
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/* notice, this list of conditions and the following disclaimer. */
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/* - Redistributions in binary form must reproduce the above */
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/* copyright notice, this list of conditions and the following */
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/* disclaimer in the documentation and/or other materials provided */
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/* with the distribution. */
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/* - Neither the name of the HTS working group nor the names of its */
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/* contributors may be used to endorse or promote products derived */
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/* from this software without specific prior written permission. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND */
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/* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, */
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/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
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/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
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/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS */
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/* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, */
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/* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED */
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/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */
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/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
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/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, */
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/* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY */
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/* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE */
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/* POSSIBILITY OF SUCH DAMAGE. */
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/* ----------------------------------------------------------------- */
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#ifndef HTS_SSTREAM_C
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#define HTS_SSTREAM_C
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#ifdef __cplusplus
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#define HTS_SSTREAM_C_START extern "C" {
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#define HTS_SSTREAM_C_END }
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#else
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#define HTS_SSTREAM_C_START
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#define HTS_SSTREAM_C_END
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#endif /* __CPLUSPLUS */
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HTS_SSTREAM_C_START;
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#include <stdlib.h>
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#include <math.h>
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/* hts_engine libraries */
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#include "HTS_hidden.h"
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/* HTS_set_default_duration: set default duration from state duration probability distribution */
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static double HTS_set_default_duration(size_t * duration, double *mean, double *vari, size_t size)
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{
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size_t i;
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double temp;
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size_t sum = 0;
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for (i = 0; i < size; i++) {
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temp = mean[i] + 0.5;
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if (temp < 1.0)
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duration[i] = 1;
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else
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duration[i] = (size_t) temp;
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sum += duration[i];
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}
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return (double) sum;
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}
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/* HTS_set_specified_duration: set duration from state duration probability distribution and specified frame length */
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static double HTS_set_specified_duration(size_t * duration, double *mean, double *vari, size_t size, double frame_length)
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{
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size_t i;
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int j;
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double temp1, temp2;
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double rho = 0.0;
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size_t sum = 0;
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size_t target_length;
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/* get the target frame length */
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if (frame_length + 0.5 < 1.0)
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target_length = 1;
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else
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target_length = (size_t) (frame_length + 0.5);
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/* check the specified duration */
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if (target_length <= size) {
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if (target_length < size)
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HTS_error(-1, "HTS_set_specified_duration: Specified frame length is too short.\n");
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for (i = 0; i < size; i++)
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duration[i] = 1;
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return (double) size;
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}
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/* RHO calculation */
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temp1 = 0.0;
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temp2 = 0.0;
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for (i = 0; i < size; i++) {
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temp1 += mean[i];
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temp2 += vari[i];
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}
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rho = ((double) target_length - temp1) / temp2;
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/* first estimation */
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for (i = 0; i < size; i++) {
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temp1 = mean[i] + rho * vari[i] + 0.5;
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if (temp1 < 1.0)
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duration[i] = 1;
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else
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duration[i] = (size_t) temp1;
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sum += duration[i];
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}
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/* loop estimation */
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while (target_length != sum) {
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/* sarch flexible state and modify its duration */
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if (target_length > sum) {
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j = -1;
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for (i = 0; i < size; i++) {
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temp2 = fabs(rho - ((double) duration[i] + 1 - mean[i]) / vari[i]);
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if (j < 0 || temp1 > temp2) {
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j = i;
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temp1 = temp2;
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}
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}
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sum++;
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duration[j]++;
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} else {
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j = -1;
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for (i = 0; i < size; i++) {
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if (duration[i] > 1) {
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temp2 = fabs(rho - ((double) duration[i] - 1 - mean[i]) / vari[i]);
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if (j < 0 || temp1 > temp2) {
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j = i;
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temp1 = temp2;
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}
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}
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}
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sum--;
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duration[j]--;
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}
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}
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return (double) target_length;
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}
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/* HTS_SStreamSet_initialize: initialize state stream set */
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void HTS_SStreamSet_initialize(HTS_SStreamSet * sss)
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{
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sss->nstream = 0;
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sss->nstate = 0;
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sss->sstream = NULL;
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sss->duration = NULL;
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sss->total_state = 0;
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sss->total_frame = 0;
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}
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/* HTS_SStreamSet_create: parse label and determine state duration */
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HTS_Boolean HTS_SStreamSet_create(HTS_SStreamSet * sss, HTS_ModelSet * ms, HTS_Label * label, HTS_Boolean phoneme_alignment_flag, double speed, double *duration_iw, double **parameter_iw, double **gv_iw)
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{
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size_t i, j, k;
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double temp;
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int shift;
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size_t state;
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HTS_SStream *sst;
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double *duration_mean, *duration_vari;
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double frame_length;
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size_t next_time;
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size_t next_state;
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/* check interpolation weights */
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for (i = 0, temp = 0.0; i < HTS_ModelSet_get_nvoices(ms); i++)
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temp += duration_iw[i];
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if (temp == 0.0) {
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return FALSE;
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} else if (temp != 1.0) {
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for (i = 0; i < HTS_ModelSet_get_nvoices(ms); i++)
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if (duration_iw[i] != 0.0)
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duration_iw[i] /= temp;
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}
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for (i = 0; i < HTS_ModelSet_get_nstream(ms); i++) {
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for (j = 0, temp = 0.0; j < HTS_ModelSet_get_nvoices(ms); j++)
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temp += parameter_iw[i][j];
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if (temp == 0.0) {
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return FALSE;
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} else if (temp != 1.0) {
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for (j = 0; j < HTS_ModelSet_get_nvoices(ms); j++)
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if (parameter_iw[i][j] != 0.0)
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parameter_iw[i][j] /= temp;
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}
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if (HTS_ModelSet_use_gv(ms, i)) {
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for (j = 0, temp = 0.0; j < HTS_ModelSet_get_nvoices(ms); j++)
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temp += gv_iw[i][j];
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if (temp == 0.0)
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return FALSE;
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else if (temp != 1.0)
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for (j = 0; j < HTS_ModelSet_get_nvoices(ms); j++)
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if (gv_iw[i][j] != 0.0)
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gv_iw[i][j] /= temp;
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}
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}
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/* initialize state sequence */
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sss->nstate = HTS_ModelSet_get_nstate(ms);
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sss->nstream = HTS_ModelSet_get_nstream(ms);
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sss->total_frame = 0;
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sss->total_state = HTS_Label_get_size(label) * sss->nstate;
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sss->duration = (size_t *) HTS_calloc(sss->total_state, sizeof(size_t));
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sss->sstream = (HTS_SStream *) HTS_calloc(sss->nstream, sizeof(HTS_SStream));
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for (i = 0; i < sss->nstream; i++) {
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sst = &sss->sstream[i];
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sst->vector_length = HTS_ModelSet_get_vector_length(ms, i);
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sst->mean = (double **) HTS_calloc(sss->total_state, sizeof(double *));
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sst->vari = (double **) HTS_calloc(sss->total_state, sizeof(double *));
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if (HTS_ModelSet_is_msd(ms, i))
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sst->msd = (double *) HTS_calloc(sss->total_state, sizeof(double));
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else
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sst->msd = NULL;
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for (j = 0; j < sss->total_state; j++) {
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sst->mean[j] = (double *) HTS_calloc(sst->vector_length * HTS_ModelSet_get_window_size(ms, i), sizeof(double));
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sst->vari[j] = (double *) HTS_calloc(sst->vector_length * HTS_ModelSet_get_window_size(ms, i), sizeof(double));
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}
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if (HTS_ModelSet_use_gv(ms, i)) {
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sst->gv_switch = (HTS_Boolean *) HTS_calloc(sss->total_state, sizeof(HTS_Boolean));
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for (j = 0; j < sss->total_state; j++)
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sst->gv_switch[j] = TRUE;
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} else {
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sst->gv_switch = NULL;
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}
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}
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/* determine state duration */
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duration_mean = (double *) HTS_calloc(sss->total_state, sizeof(double));
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duration_vari = (double *) HTS_calloc(sss->total_state, sizeof(double));
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for (i = 0; i < HTS_Label_get_size(label); i++)
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HTS_ModelSet_get_duration(ms, HTS_Label_get_string(label, i), duration_iw, &duration_mean[i * sss->nstate], &duration_vari[i * sss->nstate]);
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if (phoneme_alignment_flag == TRUE) {
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/* use duration set by user */
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next_time = 0;
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next_state = 0;
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state = 0;
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for (i = 0; i < HTS_Label_get_size(label); i++) {
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temp = HTS_Label_get_end_frame(label, i);
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if (temp >= 0) {
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next_time += (size_t) HTS_set_specified_duration(&sss->duration[next_state], &duration_mean[next_state], &duration_vari[next_state], state + sss->nstate - next_state, temp - next_time);
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next_state = state + sss->nstate;
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} else if (i + 1 == HTS_Label_get_size(label)) {
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HTS_error(-1, "HTS_SStreamSet_create: The time of final label is not specified.\n");
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HTS_set_default_duration(&sss->duration[next_state], &duration_mean[next_state], &duration_vari[next_state], state + sss->nstate - next_state);
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}
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state += sss->nstate;
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}
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} else {
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/* determine frame length */
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if (speed != 1.0) {
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temp = 0.0;
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for (i = 0; i < sss->total_state; i++) {
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temp += duration_mean[i];
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}
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frame_length = temp / speed;
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HTS_set_specified_duration(sss->duration, duration_mean, duration_vari, sss->total_state, frame_length);
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} else {
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HTS_set_default_duration(sss->duration, duration_mean, duration_vari, sss->total_state);
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}
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}
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HTS_free(duration_mean);
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HTS_free(duration_vari);
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/* get parameter */
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for (i = 0, state = 0; i < HTS_Label_get_size(label); i++) {
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for (j = 2; j <= sss->nstate + 1; j++) {
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sss->total_frame += sss->duration[state];
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for (k = 0; k < sss->nstream; k++) {
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sst = &sss->sstream[k];
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if (sst->msd)
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HTS_ModelSet_get_parameter(ms, k, j, HTS_Label_get_string(label, i), parameter_iw[k], sst->mean[state], sst->vari[state], &sst->msd[state]);
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else
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HTS_ModelSet_get_parameter(ms, k, j, HTS_Label_get_string(label, i), parameter_iw[k], sst->mean[state], sst->vari[state], NULL);
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}
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state++;
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}
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}
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/* copy dynamic window */
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for (i = 0; i < sss->nstream; i++) {
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sst = &sss->sstream[i];
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sst->win_size = HTS_ModelSet_get_window_size(ms, i);
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sst->win_max_width = HTS_ModelSet_get_window_max_width(ms, i);
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sst->win_l_width = (int *) HTS_calloc(sst->win_size, sizeof(int));
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sst->win_r_width = (int *) HTS_calloc(sst->win_size, sizeof(int));
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sst->win_coefficient = (double **) HTS_calloc(sst->win_size, sizeof(double));
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for (j = 0; j < sst->win_size; j++) {
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sst->win_l_width[j] = HTS_ModelSet_get_window_left_width(ms, i, j);
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sst->win_r_width[j] = HTS_ModelSet_get_window_right_width(ms, i, j);
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if (sst->win_l_width[j] + sst->win_r_width[j] == 0)
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sst->win_coefficient[j] = (double *) HTS_calloc(-2 * sst->win_l_width[j] + 1, sizeof(double));
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else
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sst->win_coefficient[j] = (double *) HTS_calloc(-2 * sst->win_l_width[j], sizeof(double));
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sst->win_coefficient[j] -= sst->win_l_width[j];
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for (shift = sst->win_l_width[j]; shift <= sst->win_r_width[j]; shift++)
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sst->win_coefficient[j][shift] = HTS_ModelSet_get_window_coefficient(ms, i, j, shift);
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}
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}
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/* determine GV */
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for (i = 0; i < sss->nstream; i++) {
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sst = &sss->sstream[i];
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if (HTS_ModelSet_use_gv(ms, i)) {
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sst->gv_mean = (double *) HTS_calloc(sst->vector_length, sizeof(double));
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sst->gv_vari = (double *) HTS_calloc(sst->vector_length, sizeof(double));
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|
HTS_ModelSet_get_gv(ms, i, HTS_Label_get_string(label, 0), gv_iw[i], sst->gv_mean, sst->gv_vari);
|
||
|
|
} else {
|
||
|
|
sst->gv_mean = NULL;
|
||
|
|
sst->gv_vari = NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < HTS_Label_get_size(label); i++)
|
||
|
|
if (HTS_ModelSet_get_gv_flag(ms, HTS_Label_get_string(label, i)) == FALSE)
|
||
|
|
for (j = 0; j < sss->nstream; j++)
|
||
|
|
if (HTS_ModelSet_use_gv(ms, j) == TRUE)
|
||
|
|
for (k = 0; k < sss->nstate; k++)
|
||
|
|
sss->sstream[j].gv_switch[i * sss->nstate + k] = FALSE;
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_nstream: get number of stream */
|
||
|
|
size_t HTS_SStreamSet_get_nstream(HTS_SStreamSet * sss)
|
||
|
|
{
|
||
|
|
return sss->nstream;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_vector_length: get vector length */
|
||
|
|
size_t HTS_SStreamSet_get_vector_length(HTS_SStreamSet * sss, size_t stream_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].vector_length;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_is_msd: get MSD flag */
|
||
|
|
HTS_Boolean HTS_SStreamSet_is_msd(HTS_SStreamSet * sss, size_t stream_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].msd ? TRUE : FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_total_state: get total number of state */
|
||
|
|
size_t HTS_SStreamSet_get_total_state(HTS_SStreamSet * sss)
|
||
|
|
{
|
||
|
|
return sss->total_state;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_total_frame: get total number of frame */
|
||
|
|
size_t HTS_SStreamSet_get_total_frame(HTS_SStreamSet * sss)
|
||
|
|
{
|
||
|
|
return sss->total_frame;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_msd: get MSD parameter */
|
||
|
|
double HTS_SStreamSet_get_msd(HTS_SStreamSet * sss, size_t stream_index, size_t state_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].msd[state_index];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_window_size: get dynamic window size */
|
||
|
|
size_t HTS_SStreamSet_get_window_size(HTS_SStreamSet * sss, size_t stream_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].win_size;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_window_left_width: get left width of dynamic window */
|
||
|
|
int HTS_SStreamSet_get_window_left_width(HTS_SStreamSet * sss, size_t stream_index, size_t window_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].win_l_width[window_index];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_winodow_right_width: get right width of dynamic window */
|
||
|
|
int HTS_SStreamSet_get_window_right_width(HTS_SStreamSet * sss, size_t stream_index, size_t window_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].win_r_width[window_index];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_window_coefficient: get coefficient of dynamic window */
|
||
|
|
double HTS_SStreamSet_get_window_coefficient(HTS_SStreamSet * sss, size_t stream_index, size_t window_index, int coefficient_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].win_coefficient[window_index][coefficient_index];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_window_max_width: get max width of dynamic window */
|
||
|
|
size_t HTS_SStreamSet_get_window_max_width(HTS_SStreamSet * sss, size_t stream_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].win_max_width;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_use_gv: get GV flag */
|
||
|
|
HTS_Boolean HTS_SStreamSet_use_gv(HTS_SStreamSet * sss, size_t stream_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].gv_mean ? TRUE : FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_duration: get state duration */
|
||
|
|
size_t HTS_SStreamSet_get_duration(HTS_SStreamSet * sss, size_t state_index)
|
||
|
|
{
|
||
|
|
return sss->duration[state_index];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_mean: get mean parameter */
|
||
|
|
double HTS_SStreamSet_get_mean(HTS_SStreamSet * sss, size_t stream_index, size_t state_index, size_t vector_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].mean[state_index][vector_index];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_set_mean: set mean parameter */
|
||
|
|
void HTS_SStreamSet_set_mean(HTS_SStreamSet * sss, size_t stream_index, size_t state_index, size_t vector_index, double f)
|
||
|
|
{
|
||
|
|
sss->sstream[stream_index].mean[state_index][vector_index] = f;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_vari: get variance parameter */
|
||
|
|
double HTS_SStreamSet_get_vari(HTS_SStreamSet * sss, size_t stream_index, size_t state_index, size_t vector_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].vari[state_index][vector_index];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_set_vari: set variance parameter */
|
||
|
|
void HTS_SStreamSet_set_vari(HTS_SStreamSet * sss, size_t stream_index, size_t state_index, size_t vector_index, double f)
|
||
|
|
{
|
||
|
|
sss->sstream[stream_index].vari[state_index][vector_index] = f;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_gv_mean: get GV mean parameter */
|
||
|
|
double HTS_SStreamSet_get_gv_mean(HTS_SStreamSet * sss, size_t stream_index, size_t vector_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].gv_mean[vector_index];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_gv_mean: get GV variance parameter */
|
||
|
|
double HTS_SStreamSet_get_gv_vari(HTS_SStreamSet * sss, size_t stream_index, size_t vector_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].gv_vari[vector_index];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_set_gv_switch: set GV switch */
|
||
|
|
void HTS_SStreamSet_set_gv_switch(HTS_SStreamSet * sss, size_t stream_index, size_t state_index, HTS_Boolean i)
|
||
|
|
{
|
||
|
|
sss->sstream[stream_index].gv_switch[state_index] = i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_get_gv_switch: get GV switch */
|
||
|
|
HTS_Boolean HTS_SStreamSet_get_gv_switch(HTS_SStreamSet * sss, size_t stream_index, size_t state_index)
|
||
|
|
{
|
||
|
|
return sss->sstream[stream_index].gv_switch[state_index];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* HTS_SStreamSet_clear: free state stream set */
|
||
|
|
void HTS_SStreamSet_clear(HTS_SStreamSet * sss)
|
||
|
|
{
|
||
|
|
size_t i, j;
|
||
|
|
HTS_SStream *sst;
|
||
|
|
|
||
|
|
if (sss->sstream) {
|
||
|
|
for (i = 0; i < sss->nstream; i++) {
|
||
|
|
sst = &sss->sstream[i];
|
||
|
|
for (j = 0; j < sss->total_state; j++) {
|
||
|
|
HTS_free(sst->mean[j]);
|
||
|
|
HTS_free(sst->vari[j]);
|
||
|
|
}
|
||
|
|
if (sst->msd)
|
||
|
|
HTS_free(sst->msd);
|
||
|
|
HTS_free(sst->mean);
|
||
|
|
HTS_free(sst->vari);
|
||
|
|
for (j = 0; j < sst->win_size; j++) {
|
||
|
|
sst->win_coefficient[j] += sst->win_l_width[j];
|
||
|
|
HTS_free(sst->win_coefficient[j]);
|
||
|
|
}
|
||
|
|
HTS_free(sst->win_coefficient);
|
||
|
|
HTS_free(sst->win_l_width);
|
||
|
|
HTS_free(sst->win_r_width);
|
||
|
|
if (sst->gv_mean)
|
||
|
|
HTS_free(sst->gv_mean);
|
||
|
|
if (sst->gv_vari)
|
||
|
|
HTS_free(sst->gv_vari);
|
||
|
|
if (sst->gv_switch)
|
||
|
|
HTS_free(sst->gv_switch);
|
||
|
|
}
|
||
|
|
HTS_free(sss->sstream);
|
||
|
|
}
|
||
|
|
if (sss->duration)
|
||
|
|
HTS_free(sss->duration);
|
||
|
|
|
||
|
|
HTS_SStreamSet_initialize(sss);
|
||
|
|
}
|
||
|
|
|
||
|
|
HTS_SSTREAM_C_END;
|
||
|
|
|
||
|
|
#endif /* !HTS_SSTREAM_C */
|