SV platform dependency builds

/*

 * $Id$

 * test_w_saw.c

 * Generate stereo sawtooth waveforms.

 *

 * Author: Phil Burk, http://www.softsynth.com

 *

 * This program uses PABLIO, the Portable Audio Blocking I/O Library.

 * PABLIO is built on top of PortAudio, the Portable Audio Library.

 *

 * For more information see: http://www.portaudio.com

 * Copyright (c) 1999-2000 Ross Bencina and Phil Burk

 *

 * Permission is hereby granted, free of charge, to any person obtaining

 * a copy of this software and associated documentation files

 * (the "Software"), to deal in the Software without restriction,

 * including without limitation the rights to use, copy, modify, merge,

 * publish, distribute, sublicense, and/or sell copies of the Software,

 * and to permit persons to whom the Software is furnished to do so,

 * subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be

 * included in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR

 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF

 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 */

/*

 * The text above constitutes the entire PortAudio license; however, 

 * the PortAudio community also makes the following non-binding requests:

 *

 * Any person wishing to distribute modifications to the Software is

 * requested to send the modifications to the original developer so that

 * they can be incorporated into the canonical version. It is also 

 * requested that these non-binding requests be included along with the 

 * license above.

 */

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

#include "pablio.h"

#include <string.h>

#define SAMPLE_RATE         (44100)

#define NUM_SECONDS             (6)

#define SAMPLES_PER_FRAME       (2)

#define FREQUENCY           (220.0f)

#define PHASE_INCREMENT     (2.0f * FREQUENCY / SAMPLE_RATE)

#define FRAMES_PER_BLOCK    (100)

float   samples[FRAMES_PER_BLOCK][SAMPLES_PER_FRAME];

float   phases[SAMPLES_PER_FRAME];

/*******************************************************************/

int main(void);

int main(void)

{

    int             i,j;

    PaError         err;

    PABLIO_Stream  *aOutStream;

    printf("Generate sawtooth waves using PABLIO.\n");

    fflush(stdout);

    /* Open simplified blocking I/O layer on top of PortAudio. */

    err = OpenAudioStream( &aOutStream, SAMPLE_RATE, paFloat32,

                           (PABLIO_WRITE | PABLIO_STEREO) );

    if( err != paNoError ) goto error;

    /* Initialize oscillator phases. */

    phases[0] = 0.0;

    phases[1] = 0.0;

    for( i=0; i<(NUM_SECONDS * SAMPLE_RATE); i += FRAMES_PER_BLOCK )

    {

        /* Generate sawtooth waveforms in a block for efficiency. */

        for( j=0; j<FRAMES_PER_BLOCK; j++ )

        {

            /* Generate a sawtooth wave by incrementing a variable. */

            phases[0] += PHASE_INCREMENT;

            /* The signal range is -1.0 to +1.0 so wrap around if we go over. */

            if( phases[0] > 1.0f ) phases[0] -= 2.0f;

            samples[j][0] = phases[0];

            /* On the second channel, generate a sawtooth wave a fifth higher. */

            phases[1] += PHASE_INCREMENT * (3.0f / 2.0f);

            if( phases[1] > 1.0f ) phases[1] -= 2.0f;

            samples[j][1] = phases[1];

        }

        /* Write samples to output. */

        WriteAudioStream( aOutStream, samples, FRAMES_PER_BLOCK );

    }

    CloseAudioStream( aOutStream );

    printf("Sawtooth sound test complete.\n" );

    fflush(stdout);

    return 0;

error:

    fprintf( stderr, "An error occured while using PABLIO\n" );

    fprintf( stderr, "Error number: %d\n", err );

    fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );

    return -1;

}