/*---------------------------------------------------------------------------*\

  FILE........: tst_codec2_fft_init.c,
  AUTHOR......: David Rowe, Don Reid
  DATE CREATED: 30 May 2013, Oct 2018, Feb 2018

  Test FFT Window initialization in Codec2_create

\*---------------------------------------------------------------------------*/

/*
  Copyright (C) 2014 David Rowe

  All rights reserved.

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License version 2.1, as
  published by the Free Software Foundation.  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 General Public
  License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with this program; if not, see <http://www.gnu.org/licenses/>.
*/

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <math.h>

#include "codec2.h"
#include "codec2_internal.h"
#include "defines.h"

#include "stm32f4xx_conf.h"
#include "stm32f4xx.h"
#include "semihosting.h"
#include "machdep.h"

static const float expect_w[] = {
  0.004293, 0.004301, 0.004309, 0.004315,
  0.004320, 0.004323, 0.004326, 0.004328,
  0.004328, 0.004328, 0.004326, 0.004323,
  0.004320, 0.004315, 0.004309, 0.004301};


static const float expect_W[] = {
 -0.002176,  0.002195,  0.004429, -0.008645,
 -0.012196,  0.065359,  0.262390,  0.495616, 
  0.601647,  0.495616,  0.262390,  0.065359, 
 -0.012196, -0.008645,  0.004429,  0.002195};


int float_cmp(float a, float b) {
    if ( fabsf(a - b) < 1e-6f ) return 1;
    else return 0;
    }

int main(int argc, char *argv[]) {

    struct CODEC2 *codec2;
    int i, j;

    ////////
    // Semihosting
    semihosting_init();

    ////////
    codec2 = codec2_create(CODEC2_MODE_700C);

    j = (codec2->c2const.m_pitch / 2) - 8;
    for (i=0; i<16; i++) {
        printf("w[%d] = %f", j+i, 
                (double)codec2->w[j+i]);
        if (!float_cmp(codec2->w[j+i], expect_w[i])) {
            printf(" Error, expected %f", (double)expect_w[i]);
            }
        printf("\n");
        }

    printf("\n");

    j = (FFT_ENC / 2) - 8;
    for (i=0; i<16; i++) {
        printf("W[%d] = %f", j+i, 
                (double)codec2->W[j+i]);
        if (!float_cmp(codec2->W[j+i], expect_W[i])) {
            printf(" Error, expected %f", (double)expect_W[i]);
            }
        printf("\n");
        }

    codec2_destroy(codec2);

    printf("\nEnd of Test\n");
    fclose(stdout);
    fclose(stderr);

    return(0);
}

/* vi:set ts=4 et sts=4: */