/*

 *  Copyright (C) 2004 Steve Harris

 *

 *  This program 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 2 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 General Public License for more details.

 *

 *  $Id: ex1.c $

 */

#include <stdio.h>

#include <stdint.h>

#include <math.h>

#define SIZE 256

#include "gdither.h"

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

{

    GDither ds;

    float in[SIZE];	    /* test input data */

    double ind[SIZE];	    /* test input data */

    int32_t out32[SIZE];    /* test output data: 1 chan 32bit */

    int16_t out16[SIZE][4]; /* test output data: 4 chan 16bit */

    float outf[SIZE];	    /* test output data: 1 chan float */

    int i;

    /* --- Example 1a --- */

    /* create an arbitrary sinewave for testing */

    for (i=0; i

	ind[i] = sin(i);

	in[i] = ind[i];

    }

    /* create a dither object that produces 32bit ints, triangular dithered to

     * 24 bits */

    ds = gdither_new(GDitherTri, 1, GDither32bit, 24);

    /* run the dother algorithm over the input data */

    gdither_runf(ds, 0, SIZE, in, out32);

    /* free the dither object */

    gdither_free(ds);

    /* --- Example 1b --- */

    /* create a dither object to produce rounded (undithered) 4 channel

     * interleaved 16bit output */

    ds = gdither_new(GDitherNone, 4, GDither16bit, 16);

    gdither_runf(ds, 0, SIZE, in, out16);

    gdither_runf(ds, 1, SIZE, in, out16);

    gdither_runf(ds, 2, SIZE, in, out16);

    gdither_runf(ds, 3, SIZE, in, out16);

    gdither_free(ds);

    /* --- Example 1c --- */

    /* create a dither object to produce float output rectangular dithered to

     * 24 bits from double data */

    ds = gdither_new(GDitherRect, 4, GDitherFloat, 24);

    gdither_run(ds, 0, SIZE, ind, outf);

    gdither_free(ds);

    return 0;

}

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