/*************************************************************************/
/*                                                                       */
/*                  Language Technologies Institute                      */
/*                     Carnegie Mellon University                        */
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/*                                                                       */
/*************************************************************************/
/*             Author:  Alan W Black (awb@cs.cmu.edu)                    */
/*               Date:  December 2000                                    */
/*************************************************************************/
/*                                                                       */
/*  A simple voice defintion                                             */
/*                                                                       */
/*************************************************************************/

#include "flite.h"
#include "cst_diphone.h"
#include "usenglish.h"
#include "cmu_lex.h"

static cst_utterance *cmu_us_kal16_postlex(cst_utterance *u);
extern cst_diphone_db cmu_us_kal16_db;

cst_voice *cmu_us_kal16_diphone = NULL;

cst_voice *register_cmu_us_kal16(const char *voxdir)
{
    cst_voice *v;
    cst_lexicon *lex;

    if (cmu_us_kal16_diphone)
        return cmu_us_kal16_diphone;  /* Already registered */

    v = new_voice();
    v->name = "kal16";

    usenglish_init(v);

    /* Set up basic values for synthesizing with this voice */
    flite_feat_set_string(v->features,"name","cmu_us_kal_diphone16");

    /* Lexicon */
    lex = cmu_lex_init();
    flite_feat_set(v->features,"lexicon",lexicon_val(lex));

    /* Intonation */
    flite_feat_set_float(v->features,"int_f0_target_mean",105.0);
    flite_feat_set_float(v->features,"int_f0_target_stddev",14.0);

    /* Post lexical rules */
    flite_feat_set(v->features,"postlex_func",uttfunc_val(&cmu_us_kal16_postlex));

    /* Duration */
    flite_feat_set_float(v->features,"duration_stretch",1.1);

    /* Waveform synthesis: diphone_synth */
    flite_feat_set(v->features,"wave_synth_func",uttfunc_val(&diphone_synth));
    flite_feat_set(v->features,"diphone_db",diphone_db_val(&cmu_us_kal16_db));
    flite_feat_set_int(v->features,"sample_rate",cmu_us_kal16_db.sts->sample_rate);
    flite_feat_set_string(v->features,"resynth_type","fixed");
    flite_feat_set_string(v->features,"join_type","modified_lpc");

    cmu_us_kal16_diphone = v;

    return cmu_us_kal16_diphone;
}

void unregister_cmu_us_kal16(cst_voice *v)
{
    if (v != cmu_us_kal16_diphone)
	return;
    delete_voice(v);
    cmu_us_kal16_diphone = NULL;
}

static void fix_ah(cst_utterance *u)
{
    /* This should really be done in the index itself */
    const cst_item *s;

    for (s=relation_head(utt_relation(u,"Segment")); s; s=item_next(s))
	if (cst_streq(item_feat_string(s,"name"),"ah"))
	    item_set_string(s,"name","aa");
}

static cst_utterance *cmu_us_kal16_postlex(cst_utterance *u)
{

    cmu_postlex(u);
    fix_ah(u);

    return u;
}