/*
 * Project 25 IMBE Encoder/Decoder Fixed-Point implementation
 * Developed by Pavel Yazev E-mail: pyazev@gmail.com
 * Version 1.0 (c) Copyright 2009
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 *
 * The software 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this; see the file COPYING.  If not, write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Boston, MA
 * 02110-1301, USA.
 */

#include "imbe/typedef.h"
#include "imbe/globals.h"
#include "imbe/imbe.h"
#include "imbe/ch_decode.h"
#include "imbe/sa_enh.h"
#include "imbe/basic_op.h"
#include "imbe/aux_sub.h"
#include "imbe/imbe_vocoder.h"

#include <string.h>

// ---------------------------------------------------------------------------
//  Private Class Members
// ---------------------------------------------------------------------------

void imbe_vocoder::decode_init(IMBE_PARAM* imbe_param)
{
    v_synt_init();
    uv_synt_init();
    sa_decode_init();

    // Make previous frame for the first frame
    memset((char*)imbe_param, 0, sizeof(IMBE_PARAM));
    imbe_param->fund_freq = 0x0cf6474a;
    imbe_param->num_harms = 9;
    imbe_param->num_bands = 3;

}

void imbe_vocoder::decode(IMBE_PARAM* imbe_param, Word16* frame_vector, Word16* snd)
{
    Word16 snd_tmp[FRAME];
    Word16 j;

    decode_frame_vector(imbe_param, frame_vector);
    v_uv_decode(imbe_param);
    sa_decode(imbe_param);
    sa_enh(imbe_param);
    v_synt(imbe_param, snd);
    uv_synt(imbe_param, snd_tmp);

    for (j = 0; j < FRAME; j++)
        snd[j] = add(snd[j], snd_tmp[j]);
}