/* ----------------------------------------------------------------- */ /* The English TTS System "Flite+hts_engine" */ /* developed by HTS Working Group */ /* http://hts-engine.sourceforge.net/ */ /* ----------------------------------------------------------------- */ /* */ /* Copyright (c) 2005-2013 Nagoya Institute of Technology */ /* Department of Computer Science */ /* */ /* 2005-2008 Tokyo Institute of Technology */ /* Interdisciplinary Graduate School of */ /* Science and Engineering */ /* */ /* All rights reserved. */ /* */ /* Redistribution and use in source and binary forms, with or */ /* without modification, are permitted provided that the following */ /* conditions are met: */ /* */ /* - Redistributions of source code must retain the above copyright */ /* notice, this list of conditions and the following disclaimer. */ /* - 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. */ /* - Neither the name of the HTS working group nor the names of its */ /* contributors may be used to endorse or promote products derived */ /* from this software without specific prior written permission. */ /* */ /* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND */ /* CONTRIBUTORS "AS IS" AND ANY EXPRESS 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 THE COPYRIGHT OWNER OR CONTRIBUTORS */ /* 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. */ /* ----------------------------------------------------------------- */ #include "cst_synth.h" #include "cst_utt_utils.h" #include "cst_math.h" #include "cst_file.h" #include "cst_val.h" #include "cst_string.h" #include "cst_alloc.h" #include "cst_item.h" #include "cst_relation.h" #include "cst_utterance.h" #include "cst_tokenstream.h" #include "cst_string.h" #include "cst_regex.h" #include "cst_features.h" #include "cst_utterance.h" #include "flite.h" #include "cst_synth.h" #include "cst_utt_utils.h" #include "flite_hts_engine.h" /* HTS_GStreamSet_get_total_nsamples: get total number of sample */ size_t HTS_GStreamSet_get_total_nsamples(HTS_GStreamSet * gss); /* HTS_GStreamSet_get_speech: get synthesized speech parameter */ double HTS_GStreamSet_get_speech(HTS_GStreamSet * gss, size_t sample_index); #define REGISTER_VOX register_cmu_us_kal #define UNREGISTER_VOX unregister_cmu_us_kal #define MAXBUFLEN 1024 cst_voice *REGISTER_VOX(const char *voxdir); cst_voice *UNREGISTER_VOX(cst_voice * vox); /* Flite_HTS_Engine_create_label: create label per phoneme */ static void Flite_HTS_Engine_create_label(Flite_HTS_Engine * f, cst_item * item, char *label) { char seg_pp[8]; char seg_p[8]; char seg_c[8]; char seg_n[8]; char seg_nn[8]; char endtone[8]; int sub_phrases = 0; int lisp_total_phrases = 0; int tmp1 = 0; int tmp2 = 0; int tmp3 = 0; int tmp4 = 0; /* load segments */ strcpy(seg_pp, ffeature_string(item, "p.p.name")); strcpy(seg_p, ffeature_string(item, "p.name")); strcpy(seg_c, ffeature_string(item, "name")); strcpy(seg_n, ffeature_string(item, "n.name")); strcpy(seg_nn, ffeature_string(item, "n.n.name")); /* load endtone */ strcpy(endtone, ffeature_string(item, "R:SylStructure.parent.parent.R:Phrase.parent.daughtern.R:SylStructure.daughtern.endtone")); if (strcmp(seg_c, "pau") == 0) { /* for pause */ if (item_next(item) != NULL) { sub_phrases = ffeature_int(item, "n.R:SylStructure.parent.R:Syllable.sub_phrases"); tmp1 = ffeature_int(item, "n.R:SylStructure.parent.parent.R:Phrase.parent.lisp_total_syls"); tmp2 = ffeature_int(item, "n.R:SylStructure.parent.parent.R:Phrase.parent.lisp_total_words"); lisp_total_phrases = ffeature_int(item, "n.R:SylStructure.parent.parent.R:Phrase.parent.lisp_total_phrases"); } else { sub_phrases = ffeature_int(item, "p.R:SylStructure.parent.R:Syllable.sub_phrases"); tmp1 = ffeature_int(item, "p.R:SylStructure.parent.parent.R:Phrase.parent.lisp_total_syls"); tmp2 = ffeature_int(item, "p.R:SylStructure.parent.parent.R:Phrase.parent.lisp_total_words"); lisp_total_phrases = ffeature_int(item, "p.R:SylStructure.parent.parent.R:Phrase.parent.lisp_total_phrases"); } sprintf(label, "%s^%s-%s+%s=%s@x_x/A:%d_%d_%d/B:x-x-x@x-x&x-x#x-x$x-x!x-x;x-x|x/C:%d+%d+%d/D:%s_%d/E:x+x@x+x&x+x#x+x/F:%s_%d/G:%d_%d/H:x=x^%d=%d|%s/I:%d=%d/J:%d+%d-%d", strcmp(seg_pp, "0") == 0 ? "x" : seg_pp, strcmp(seg_p, "0") == 0 ? "x" : seg_p, seg_c, strcmp(seg_n, "0") == 0 ? "x" : seg_n, strcmp(seg_nn, "0") == 0 ? "x" : seg_nn, ffeature_int(item, "p.R:SylStructure.parent.R:Syllable.stress"), ffeature_int(item, "p.R:SylStructure.parent.R:Syllable.accented"), ffeature_int(item, "p.R:SylStructure.parent.R:Syllable.syl_numphones"), ffeature_int(item, "n.R:SylStructure.parent.R:Syllable.stress"), ffeature_int(item, "n.R:SylStructure.parent.R:Syllable.accented"), ffeature_int(item, "n.R:SylStructure.parent.R:Syllable.syl_numphones"), ffeature_string(item, "p.R:SylStructure.parent.parent.R:Word.gpos"), ffeature_int(item, "p.R:SylStructure.parent.parent.R:Word.word_numsyls"), ffeature_string(item, "n.R:SylStructure.parent.parent.R:Word.gpos"), ffeature_int(item, "n.R:SylStructure.parent.parent.R:Word.word_numsyls"), ffeature_int(item, "p.R:SylStructure.parent.parent.R:Phrase.parent.lisp_num_syls_in_phrase"), ffeature_int(item, "p.R:SylStructure.parent.parent.R:Phrase.parent.lisp_num_words_in_phrase"), sub_phrases + 1, lisp_total_phrases - sub_phrases, endtone, ffeature_int(item, "n.R:SylStructure.parent.parent.R:Phrase.parent.lisp_num_syls_in_phrase"), ffeature_int(item, "n.R:SylStructure.parent.parent.R:Phrase.parent.lisp_num_words_in_phrase"), tmp1, tmp2, lisp_total_phrases); } else { /* for no pause */ tmp1 = ffeature_int(item, "R:SylStructure.pos_in_syl"); tmp2 = ffeature_int(item, "R:SylStructure.parent.R:Syllable.syl_numphones"); tmp3 = ffeature_int(item, "R:SylStructure.parent.R:Syllable.pos_in_word"); tmp4 = ffeature_int(item, "R:SylStructure.parent.parent.R:Word.word_numsyls"); sub_phrases = ffeature_int(item, "R:SylStructure.parent.R:Syllable.sub_phrases"); lisp_total_phrases = ffeature_int(item, "R:SylStructure.parent.parent.R:Phrase.parent.lisp_total_phrases"); sprintf(label, "%s^%s-%s+%s=%s@%d_%d/A:%d_%d_%d/B:%d-%d-%d@%d-%d&%d-%d#%d-%d$%d-%d!%d-%d;%d-%d|%s/C:%d+%d+%d/D:%s_%d/E:%s+%d@%d+%d&%d+%d#%d+%d/F:%s_%d/G:%d_%d/H:%d=%d^%d=%d|%s/I:%d=%d/J:%d+%d-%d", strcmp(seg_pp, "0") == 0 ? "x" : seg_pp, strcmp(seg_p, "0") == 0 ? "x" : seg_p, seg_c, strcmp(seg_n, "0") == 0 ? "x" : seg_n, strcmp(seg_nn, "0") == 0 ? "x" : seg_nn, tmp1 + 1, tmp2 - tmp1, ffeature_int(item, "R:SylStructure.parent.R:Syllable.p.stress"), ffeature_int(item, "R:SylStructure.parent.R:Syllable.p.accented"), ffeature_int(item, "R:SylStructure.parent.R:Syllable.p.syl_numphones"), ffeature_int(item, "R:SylStructure.parent.R:Syllable.stress"), ffeature_int(item, "R:SylStructure.parent.R:Syllable.accented"), tmp2, tmp3 + 1, tmp4 - tmp3, ffeature_int(item, "R:SylStructure.parent.R:Syllable.syl_in") + 1, ffeature_int(item, "R:SylStructure.parent.R:Syllable.syl_out") + 1, ffeature_int(item, "R:SylStructure.parent.R:Syllable.ssyl_in") + 1, ffeature_int(item, "R:SylStructure.parent.R:Syllable.ssyl_out") + 1, ffeature_int(item, "R:SylStructure.parent.R:Syllable.asyl_in") + 1, ffeature_int(item, "R:SylStructure.parent.R:Syllable.asyl_out") + 1, ffeature_int(item, "R:SylStructure.parent.R:Syllable.lisp_distance_to_p_stress"), ffeature_int(item, "R:SylStructure.parent.R:Syllable.lisp_distance_to_n_stress"), ffeature_int(item, "R:SylStructure.parent.R:Syllable.lisp_distance_to_p_accent"), ffeature_int(item, "R:SylStructure.parent.R:Syllable.lisp_distance_to_n_accent"), ffeature_string(item, "R:SylStructure.parent.R:Syllable.syl_vowel"), ffeature_int(item, "R:SylStructure.parent.R:Syllable.n.stress"), ffeature_int(item, "R:SylStructure.parent.R:Syllable.n.accented"), ffeature_int(item, "R:SylStructure.parent.R:Syllable.n.syl_numphones"), ffeature_string(item, "R:SylStructure.parent.parent.R:Word.p.gpos"), ffeature_int(item, "R:SylStructure.parent.parent.R:Word.p.word_numsyls"), ffeature_string(item, "R:SylStructure.parent.parent.R:Word.gpos"), tmp4, ffeature_int(item, "R:SylStructure.parent.parent.R:Word.pos_in_phrase") + 1, ffeature_int(item, "R:SylStructure.parent.parent.R:Word.words_out"), ffeature_int(item, "R:SylStructure.parent.parent.R:Word.content_words_in") + 1, ffeature_int(item, "R:SylStructure.parent.parent.R:Word.content_words_out") + 1, ffeature_int(item, "R:SylStructure.parent.parent.R:Word.lisp_distance_to_p_content"), ffeature_int(item, "R:SylStructure.parent.parent.R:Word.lisp_distance_to_n_content"), ffeature_string(item, "R:SylStructure.parent.parent.R:Word.n.gpos"), ffeature_int(item, "R:SylStructure.parent.parent.R:Word.n.word_numsyls"), ffeature_int(item, "R:SylStructure.parent.parent.R:Phrase.parent.p.lisp_num_syls_in_phrase"), ffeature_int(item, "R:SylStructure.parent.parent.R:Phrase.parent.p.lisp_num_words_in_phrase"), ffeature_int(item, "R:SylStructure.parent.parent.R:Phrase.parent.lisp_num_syls_in_phrase"), ffeature_int(item, "R:SylStructure.parent.parent.R:Phrase.parent.lisp_num_words_in_phrase"), sub_phrases + 1, lisp_total_phrases - sub_phrases, strcmp(endtone, "0") == 0 ? "NONE" : endtone, ffeature_int(item, "R:SylStructure.parent.parent.R:Phrase.parent.n.lisp_num_syls_in_phrase"), ffeature_int(item, "R:SylStructure.parent.parent.R:Phrase.parent.n.lisp_num_words_in_phrase"), ffeature_int(item, "R:SylStructure.parent.parent.R:Phrase.parent.lisp_total_syls"), ffeature_int(item, "R:SylStructure.parent.parent.R:Phrase.parent.lisp_total_words"), lisp_total_phrases); } } /* Flite_HTS_Engine_initialize: initialize system */ void Flite_HTS_Engine_initialize(Flite_HTS_Engine * f) { HTS_Engine_initialize(&f->engine); } /* Flite_HTS_Engine_load: load HTS voice */ HTS_Boolean Flite_HTS_Engine_load(Flite_HTS_Engine * f, const char *fn) { HTS_Boolean result; char *voices = strdup(fn); result = HTS_Engine_load(&f->engine, &voices, 1); free(voices); return result; } /* Flite_HTS_Engine_set_sampling_frequency: set sampling frequency */ void Flite_HTS_Engine_set_sampling_frequency(Flite_HTS_Engine * f, size_t i) { HTS_Engine_set_sampling_frequency(&f->engine, i); } /* Flite_HTS_Engine_set_fperiod: set frame period */ void Flite_HTS_Engine_set_fperiod(Flite_HTS_Engine * f, size_t i) { HTS_Engine_set_fperiod(&f->engine, i); } /* Flite_HTS_Engine_set_audio_buff_size: set audio buffer size */ void Flite_HTS_Engine_set_audio_buff_size(Flite_HTS_Engine * f, size_t i) { HTS_Engine_set_audio_buff_size(&f->engine, i); } /* Flite_HTS_Engine_set_alpha: set alpha */ void Flite_HTS_Engine_set_alpha(Flite_HTS_Engine * f, double d) { HTS_Engine_set_alpha(&f->engine, d); } /* Flite_HTS_Engine_set_beta: set beta */ void Flite_HTS_Engine_set_beta(Flite_HTS_Engine * f, double d) { HTS_Engine_set_beta(&f->engine, d); } /* Flite_HTS_Engine_add_half_tone: add half-tone */ void Flite_HTS_Engine_add_half_tone(Flite_HTS_Engine * f, double d) { HTS_Engine_add_half_tone(&f->engine, d); } /* Flite_HTS_Engine_set_msd_threshold: set MSD threshold */ void Flite_HTS_Engine_set_msd_threshold(Flite_HTS_Engine * f, size_t stream_index, double d) { HTS_Engine_set_msd_threshold(&f->engine, stream_index, d); } /* Flite_HTS_Engine_set_gv_weight: set GV weight */ void Flite_HTS_Engine_set_gv_weight(Flite_HTS_Engine * f, size_t stream_index, double d) { HTS_Engine_set_gv_weight(&f->engine, stream_index, d); } /* Flite_HTS_Engine_set_speed: set speech speed */ void Flite_HTS_Engine_set_speed(Flite_HTS_Engine * f, double d) { HTS_Engine_set_speed(&f->engine, d); } /* Flite_HTS_Engine_synthesize: synthesize speech */ HTS_Boolean Flite_HTS_Engine_synthesize(Flite_HTS_Engine * f, const char *txt, const char *wav) { int i; FILE *fp; cst_voice *v = NULL; cst_utterance *u = NULL; cst_item *s = NULL; char **label_data = NULL; int label_size = 0; if (txt == NULL) return FALSE; /* text analysis part */ v = REGISTER_VOX(NULL); if (v == NULL) return FALSE; u = flite_synth_text(txt, v); if (u == NULL) return FALSE; for (s = relation_head(utt_relation(u, "Segment")); s; s = item_next(s)) label_size++; if (label_size <= 0) return FALSE; label_data = (char **) calloc(label_size, sizeof(char *)); for (i = 0, s = relation_head(utt_relation(u, "Segment")); s; s = item_next(s), i++) { label_data[i] = (char *) calloc(MAXBUFLEN, sizeof(char)); Flite_HTS_Engine_create_label(f, s, label_data[i]); } /* speech synthesis part */ HTS_Engine_synthesize_from_strings(&f->engine, label_data, label_size); if (wav != NULL) { fp = fopen(wav, "wb"); HTS_Engine_save_riff(&f->engine, fp); fclose(fp); } HTS_Engine_refresh(&f->engine); for (i = 0; i < label_size; i++) free(label_data[i]); free(label_data); delete_utterance(u); UNREGISTER_VOX(v); return TRUE; } /* Flite_HTS_Engine_synthesize: synthesize speech */ HTS_Boolean Flite_HTS_Engine_synthesize_samples_mono16(Flite_HTS_Engine * f, const char *txt, void** samples, int* sampleCount, int* sampleRate) { int i; cst_voice *v = NULL; cst_utterance *u = NULL; cst_item *s = NULL; char **label_data = NULL; int label_size = 0; short* samplePtr = NULL; HTS_GStreamSet *gss; if (txt == NULL) return FALSE; /* text analysis part */ v = REGISTER_VOX(NULL); if (v == NULL) return FALSE; u = flite_synth_text(txt, v); if (u == NULL) return FALSE; for (s = relation_head(utt_relation(u, "Segment")); s; s = item_next(s)) label_size++; if (label_size <= 0) return FALSE; label_data = (char **) calloc(label_size, sizeof(char *)); for (i = 0, s = relation_head(utt_relation(u, "Segment")); s; s = item_next(s), i++) { label_data[i] = (char *) calloc(MAXBUFLEN, sizeof(char)); Flite_HTS_Engine_create_label(f, s, label_data[i]); } /* speech synthesis part */ HTS_Engine_synthesize_from_strings(&f->engine, label_data, label_size); gss = &f->engine.gss; *sampleRate = f->engine.condition.sampling_frequency; *sampleCount = HTS_GStreamSet_get_total_nsamples(gss); *samples = malloc(sizeof(short) * *sampleCount); samplePtr = *samples; for (i=0; i < *sampleCount; ++i) { *samplePtr++ = (short) HTS_GStreamSet_get_speech(gss, i); } HTS_Engine_refresh(&f->engine); for (i = 0; i < label_size; i++) free(label_data[i]); free(label_data); delete_utterance(u); UNREGISTER_VOX(v); return TRUE; } /* Flite_HTS_Engine_clear: free system */ void Flite_HTS_Engine_clear(Flite_HTS_Engine * f) { HTS_Engine_clear(&f->engine); } typedef struct _Flite_Utterance { cst_voice *v; cst_utterance *u; int nitem; cst_item **items; } Flite_Utterance; /* Flite_Text_Analyzer_initialize: initialize flite front-end */ void Flite_Text_Analyzer_initialize(Flite_Text_Analyzer * analyzer) { if (analyzer == NULL) return; analyzer->pointer = NULL; } /* Flite_Text_Analyzer_analysis: text analysis */ void Flite_Text_Analyzer_analysis(Flite_Text_Analyzer * analyzer, const char *text) { int i; cst_item *s; Flite_Utterance *fu; if (analyzer == NULL || text == NULL) return; if (analyzer->pointer != NULL) Flite_Text_Analyzer_clear(analyzer); /* allocate */ fu = (Flite_Utterance *) malloc(sizeof(Flite_Utterance)); if (fu == NULL) return; /* create voice */ fu->v = REGISTER_VOX(NULL); if (fu->v == NULL) { free(fu); return; } /* create utterance */ fu->u = flite_synth_text(text, fu->v); if (fu->u == NULL) { UNREGISTER_VOX(fu->v); free(fu); return; } /* count number of phonemes */ for (fu->nitem = 0, s = relation_head(utt_relation(fu->u, "Segment")); s; s = item_next(s), fu->nitem++); if (fu->nitem == 0) { delete_utterance(fu->u); UNREGISTER_VOX(fu->v); free(fu); return; } /* save informations */ fu->items = (cst_item **) malloc(sizeof(cst_item *) * fu->nitem); for (i = 0, s = relation_head(utt_relation(fu->u, "Segment")); s; s = item_next(s), i++) fu->items[i] = s; analyzer->pointer = (void *) fu; } /* Flite_Text_Analyzer_get_nphoneme_in_utterance: get number of phonemes */ int Flite_Text_Analyzer_get_nphoneme_in_utterance(Flite_Text_Analyzer * analyzer) { Flite_Utterance *fu; if (analyzer == NULL || analyzer->pointer == NULL) return 0; fu = (Flite_Utterance *) analyzer->pointer; return fu->nitem; } /* Flite_Text_Analyzer_get_phoneme: get phoneme identity */ const char *Flite_Text_Analyzer_get_phoneme(Flite_Text_Analyzer * analyzer, int phoneme_index) { Flite_Utterance *fu; if (analyzer == NULL || analyzer->pointer == NULL) return NULL; fu = (Flite_Utterance *) analyzer->pointer; if (phoneme_index < 0 || phoneme_index >= fu->nitem) return NULL; return ffeature_string(fu->items[phoneme_index], "name"); } /* Flite_Text_Analyzer_get_word: get word */ const char *Flite_Text_Analyzer_get_word(Flite_Text_Analyzer * analyzer, int phoneme_index) { Flite_Utterance *fu; if (analyzer == NULL || analyzer->pointer == NULL) return NULL; fu = (Flite_Utterance *) analyzer->pointer; if (phoneme_index < 0 || phoneme_index >= fu->nitem) return NULL; return ffeature_string(fu->items[phoneme_index], "R:SylStructure.parent.parent.name"); } /* Flite_Text_Analyzer_get_nphoneme_in_syllable: get number of phonemes in syllable */ int Flite_Text_Analyzer_get_nphoneme_in_syllable(Flite_Text_Analyzer * analyzer, int phoneme_index) { Flite_Utterance *fu; if (analyzer == NULL || analyzer->pointer == NULL) return 0; fu = (Flite_Utterance *) analyzer->pointer; if (phoneme_index < 0 || phoneme_index >= fu->nitem) return 0; return ffeature_int(fu->items[phoneme_index], "R:SylStructure.parent.R:Syllable.syl_numphones"); } /* Flite_Text_Analayzer_get_nsyllable_in_word: get number of syllables in word */ int Flite_Text_Analyzer_get_nsyllable_in_word(Flite_Text_Analyzer * analyzer, int phoneme_index) { Flite_Utterance *fu; if (analyzer == NULL || analyzer->pointer == NULL) return 0; fu = (Flite_Utterance *) analyzer->pointer; if (phoneme_index < 0 || phoneme_index >= fu->nitem) return 0; return ffeature_int(fu->items[phoneme_index], "R:SylStructure.parent.parent.R:Word.word_numsyls"); } /* Flite_Text_Analyzer_get_nword_in_phrase: get number of words in phrase */ int Flite_Text_Analyzer_get_nword_in_phrase(Flite_Text_Analyzer * analyzer, int phoneme_index) { Flite_Utterance *fu; if (analyzer == NULL || analyzer->pointer == NULL) return 0; fu = (Flite_Utterance *) analyzer->pointer; if (phoneme_index < 0 || phoneme_index >= fu->nitem) return 0; return ffeature_int(fu->items[phoneme_index], "R:SylStructure.parent.parent.R:Phrase.parent.lisp_num_words_in_phrase"); } /* Flite_Text_Analyzer_get_nphrase_in_utterance: get number of phrases in utterance */ int Flite_Text_Analyzer_get_nphrase_in_utterance(Flite_Text_Analyzer * analyzer, int phoneme_index) { Flite_Utterance *fu; if (analyzer == NULL || analyzer->pointer == NULL) return 0; fu = (Flite_Utterance *) analyzer->pointer; if (phoneme_index < 0 || phoneme_index >= fu->nitem) return 0; return ffeature_int(fu->items[phoneme_index], "R:SylStructure.parent.parent.R:Phrase.parent.lisp_total_phrases"); } /* Flite_Text_Analyzer_get_accent: get accent */ int Flite_Text_Analyzer_get_accent(Flite_Text_Analyzer * analyzer, int phoneme_index) { Flite_Utterance *fu; if (analyzer == NULL || analyzer->pointer == NULL) return 0; fu = (Flite_Utterance *) analyzer->pointer; if (phoneme_index < 0 || phoneme_index >= fu->nitem) return 0; return ffeature_int(fu->items[phoneme_index], "R:SylStructure.parent.R:Syllable.accented"); } /* Flite_Text_Analyzer_get_stress: get stress */ int Flite_Text_Analyzer_get_stress(Flite_Text_Analyzer * analyzer, int phoneme_index) { Flite_Utterance *fu; if (analyzer == NULL || analyzer->pointer == NULL) return 0; fu = (Flite_Utterance *) analyzer->pointer; if (phoneme_index < 0 || phoneme_index >= fu->nitem) return 0; return ffeature_int(fu->items[phoneme_index], "R:SylStructure.parent.R:Syllable.stress"); } /* Flite_Text_Analyzer_clear: finalize flite front-end */ void Flite_Text_Analyzer_clear(Flite_Text_Analyzer * analyzer) { Flite_Utterance *fu; if (analyzer == NULL || analyzer->pointer == NULL) return; fu = (Flite_Utterance *) analyzer->pointer; if (fu->items != NULL) free(fu->items); if (fu->u != NULL) delete_utterance(fu->u); if (fu->v != NULL) UNREGISTER_VOX(fu->v); free(fu); analyzer->pointer = NULL; }