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/*
* FPMs-TCTS SOFTWARE LIBRARY
*
* File: diphone.c
* Time-stamp: <00/03/30 01:29:26 pagel>
* Purpose: Phone and diphone objects
* Authors: Vincent Pagel
* Email : mbrola@tcts.fpms.ac.be
*
* Copyright (c) 1995-2018 Faculte Polytechnique de Mons (TCTS lab)
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* 15/06/98 : Created. Phones, Diphones, ...
* 09/09/98 : reset_DiphoneSynthesis function
* 24/03/00 : no more limits on period size ->
* pass frame size during construction
*/
#include "diphone.h"
DiphoneSynthesis* init_DiphoneSynthesis(int mbr_period, int max_pm, int max_samples)
/* Alloc memory, working and audio buffers for synthesis */
{
DiphoneSynthesis* self;
self= (DiphoneSynthesis *) MBR_malloc(sizeof(DiphoneSynthesis));
LeftPhone(self)=NULL;
RightPhone(self)=NULL;
smoothw(self)= (int16*) MBR_malloc(sizeof(int16) * 2*mbr_period);
real_frame(self)= (uint8*) MBR_malloc(sizeof(uint8) * max_pm);
/* For ROM RAW databases, no need to alloc a buffer */
if (max_samples)
buffer(self)= (int16*) MBR_malloc(sizeof(int16) * max_samples);
buffer_alloced(self)= (max_samples!=0);
return(self);
}
void reset_DiphoneSynthesis(DiphoneSynthesis* ds)
/*
* Forget the diphone in progress
*/
{
ds->Descriptor=NULL;
if (LeftPhone(ds))
{
close_Phone( LeftPhone(ds) );
LeftPhone(ds)=NULL;
}
if (RightPhone(ds))
{
close_Phone( RightPhone(ds) );
RightPhone(ds)= NULL;
}
}
void close_DiphoneSynthesis(DiphoneSynthesis* ds)
/* Release memory and phone */
{
reset_DiphoneSynthesis(ds);
if (smoothw(ds))
MBR_free( smoothw(ds) );
if ( buffer_alloced(ds) &&
buffer(ds) )
MBR_free( buffer(ds) );
if (real_frame(ds))
MBR_free( real_frame(ds) );
MBR_free(ds);
}
int GetPitchPeriod(DiphoneSynthesis *dp, int cur_sample,int Freq)
/*
* Returns the pitch period (in samples) at position cur_sample
* of dp by linear interpolation between pitch pattern points.
*/
{
int i;
Phone *work_phone;
float phon_time; /* Time from the begining of the phoneme */
float curtime= cur_sample*1000.0f/(float)Freq; /* Time in ms */
float return_val;
debug_message2("GetPitch %f\n",
curtime);
/* Left part of the diphone */
if (cur_sample < Length1(dp))
{
work_phone=LeftPhone(dp);
phon_time= curtime + length_Phone(LeftPhone(dp)) -
Length1(dp)/(Freq/1000);
/* Too far */
if (phon_time >= length_Phone(LeftPhone(dp)))
{
Phone *phon=LeftPhone(dp);
return (int) ((float)Freq/freq_Pitch(tail_PitchPattern(phon)));
}
}
else /* Right part of the diphone */
{
work_phone=RightPhone(dp);
phon_time= curtime - Length1(dp)/(Freq/1000) ;
}
if (phon_time<0.0f)
phon_time=0.0f;
i=0;
while ( (i < work_phone->NPitchPatternPoints) &&
(phon_time >= work_phone->PitchPattern[i].pos))
i++;
if (i>=work_phone->NPitchPatternPoints)
return_val= freq_Pitch(tail_PitchPattern(work_phone));
else /* Linear interpolation of pitch value */
return_val= work_phone->PitchPattern[i-1].freq
+ (work_phone->PitchPattern[i].freq - work_phone->PitchPattern[i-1].freq)
/(work_phone->PitchPattern[i].pos - work_phone->PitchPattern[i-1].pos)
* (phon_time - work_phone->PitchPattern[i-1].pos);
debug_message1("done GetPitch\n");
return( (int)((float)Freq / return_val) );
}
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