264 lines
8.9 KiB
C
264 lines
8.9 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_LABEL_C
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#define HTS_LABEL_C
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#ifdef __cplusplus
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#define HTS_LABEL_C_START extern "C" {
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#define HTS_LABEL_C_END }
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#else
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#define HTS_LABEL_C_START
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#define HTS_LABEL_C_END
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#endif /* __CPLUSPLUS */
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HTS_LABEL_C_START;
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#include <stdlib.h> /* for atof() */
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#include <ctype.h> /* for isgraph(),isdigit() */
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/* hts_engine libraries */
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#include "HTS_hidden.h"
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static HTS_Boolean isdigit_string(char *str)
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{
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int i;
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if (sscanf(str, "%d", &i) == 1)
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return TRUE;
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else
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return FALSE;
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}
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/* HTS_Label_initialize: initialize label */
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void HTS_Label_initialize(HTS_Label * label)
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{
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label->head = NULL;
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label->size = 0;
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}
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/* HTS_Label_check_time: check label */
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static void HTS_Label_check_time(HTS_Label * label)
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{
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HTS_LabelString *lstring = label->head;
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HTS_LabelString *next = NULL;
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if (lstring)
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lstring->start = 0.0;
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while (lstring) {
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next = lstring->next;
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if (!next)
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break;
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if (lstring->end < 0.0 && next->start >= 0.0)
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lstring->end = next->start;
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else if (lstring->end >= 0.0 && next->start < 0.0)
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next->start = lstring->end;
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if (lstring->start < 0.0)
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lstring->start = -1.0;
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if (lstring->end < 0.0)
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lstring->end = -1.0;
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lstring = next;
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}
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}
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/* HTS_Label_load: load label */
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static void HTS_Label_load(HTS_Label * label, size_t sampling_rate, size_t fperiod, HTS_File * fp)
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{
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char buff[HTS_MAXBUFLEN];
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HTS_LabelString *lstring = NULL;
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double start, end;
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const double rate = (double) sampling_rate / ((double) fperiod * 1e+7);
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if (label->head || label->size != 0) {
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HTS_error(1, "HTS_Label_load_from_fp: label is not initialized.\n");
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return;
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}
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/* parse label file */
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while (HTS_get_token_from_fp(fp, buff)) {
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if (!isgraph((int) buff[0]))
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break;
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label->size++;
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if (lstring) {
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lstring->next = (HTS_LabelString *) HTS_calloc(1, sizeof(HTS_LabelString));
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lstring = lstring->next;
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} else { /* first time */
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lstring = (HTS_LabelString *) HTS_calloc(1, sizeof(HTS_LabelString));
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label->head = lstring;
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}
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if (isdigit_string(buff)) { /* has frame infomation */
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start = atof(buff);
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HTS_get_token_from_fp(fp, buff);
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end = atof(buff);
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HTS_get_token_from_fp(fp, buff);
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lstring->start = rate * start;
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lstring->end = rate * end;
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} else {
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lstring->start = -1.0;
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lstring->end = -1.0;
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}
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lstring->next = NULL;
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lstring->name = HTS_strdup(buff);
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}
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HTS_Label_check_time(label);
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}
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/* HTS_Label_load_from_fn: load label from file name */
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void HTS_Label_load_from_fn(HTS_Label * label, size_t sampling_rate, size_t fperiod, const char *fn)
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{
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HTS_File *fp = HTS_fopen_from_fn(fn, "r");
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HTS_Label_load(label, sampling_rate, fperiod, fp);
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HTS_fclose(fp);
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}
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/* HTS_Label_load_from_strings: load label from strings */
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void HTS_Label_load_from_strings(HTS_Label * label, size_t sampling_rate, size_t fperiod, char **lines, size_t num_lines)
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{
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char buff[HTS_MAXBUFLEN];
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HTS_LabelString *lstring = NULL;
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size_t i;
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size_t data_index;
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double start, end;
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const double rate = (double) sampling_rate / ((double) fperiod * 1e+7);
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if (label->head || label->size != 0) {
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HTS_error(1, "HTS_Label_load_from_fp: label list is not initialized.\n");
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return;
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}
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/* copy label */
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for (i = 0; i < num_lines; i++) {
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if (!isgraph((int) lines[i][0]))
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break;
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label->size++;
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if (lstring) {
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lstring->next = (HTS_LabelString *) HTS_calloc(1, sizeof(HTS_LabelString));
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lstring = lstring->next;
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} else { /* first time */
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lstring = (HTS_LabelString *) HTS_calloc(1, sizeof(HTS_LabelString));
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label->head = lstring;
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}
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data_index = 0;
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if (isdigit_string(lines[i])) { /* has frame infomation */
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HTS_get_token_from_string(lines[i], &data_index, buff);
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start = atof(buff);
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HTS_get_token_from_string(lines[i], &data_index, buff);
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end = atof(buff);
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HTS_get_token_from_string(lines[i], &data_index, buff);
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lstring->name = HTS_strdup(buff);
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lstring->start = rate * start;
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lstring->end = rate * end;
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} else {
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lstring->start = -1.0;
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lstring->end = -1.0;
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lstring->name = HTS_strdup(lines[i]);
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}
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lstring->next = NULL;
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}
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HTS_Label_check_time(label);
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}
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/* HTS_Label_get_size: get number of label string */
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size_t HTS_Label_get_size(HTS_Label * label)
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{
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return label->size;
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}
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/* HTS_Label_get_string: get label string */
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const char *HTS_Label_get_string(HTS_Label * label, size_t index)
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{
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size_t i;
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HTS_LabelString *lstring = label->head;
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for (i = 0; i < index && lstring; i++)
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lstring = lstring->next;
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if (!lstring)
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return NULL;
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return lstring->name;
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}
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/* HTS_Label_get_start_frame: get start frame */
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double HTS_Label_get_start_frame(HTS_Label * label, size_t index)
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{
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size_t i;
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HTS_LabelString *lstring = label->head;
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for (i = 0; i < index && lstring; i++)
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lstring = lstring->next;
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if (!lstring)
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return -1.0;
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return lstring->start;
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}
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/* HTS_Label_get_end_frame: get end frame */
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double HTS_Label_get_end_frame(HTS_Label * label, size_t index)
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{
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size_t i;
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HTS_LabelString *lstring = label->head;
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for (i = 0; i < index && lstring; i++)
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lstring = lstring->next;
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if (!lstring)
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return -1.0;
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return lstring->end;
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}
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/* HTS_Label_clear: free label */
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void HTS_Label_clear(HTS_Label * label)
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{
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HTS_LabelString *lstring, *next_lstring;
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for (lstring = label->head; lstring; lstring = next_lstring) {
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next_lstring = lstring->next;
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HTS_free(lstring->name);
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HTS_free(lstring);
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}
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HTS_Label_initialize(label);
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}
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HTS_LABEL_C_END;
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#endif /* !HTS_LABEL_C */
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