SV platform dependency builds

/** @file patest_prime.c

        @ingroup test_src

        @brief Test stream priming mode.

        @author Ross Bencina http://www.audiomulch.com/~rossb

*/

/*

 * $Id$

 *

 * This program uses the PortAudio 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 <math.h>

#include "portaudio.h"

#include "pa_util.h"

#define NUM_BEEPS           (3)

#define SAMPLE_RATE         (44100)

#define SAMPLE_PERIOD       (1.0/44100.0)

#define FRAMES_PER_BUFFER   (256)

#define BEEP_DURATION       (400)

#define IDLE_DURATION       (SAMPLE_RATE*2)      /* 2 seconds */

#define SLEEP_MSEC          (50)

#define STATE_BKG_IDLE      (0)

#define STATE_BKG_BEEPING   (1)

typedef struct

{

    float        leftPhase;

    float        rightPhase;

    int          state;

    int          beepCountdown;

    int          idleCountdown;

}

paTestData;

static void InitializeTestData( paTestData *testData )

{

    testData->leftPhase = 0;

    testData->rightPhase = 0;

    testData->state = STATE_BKG_BEEPING;

    testData->beepCountdown = BEEP_DURATION;

    testData->idleCountdown = IDLE_DURATION;

}

/* This routine will be called by the PortAudio engine when audio is needed.

** It may called at interrupt level on some machines so don't do anything

** that could mess up the system like calling malloc() or free().

*/

static int patestCallback( const void *inputBuffer, void *outputBuffer,

                           unsigned long framesPerBuffer,

                                       const PaStreamCallbackTimeInfo *timeInfo,

                                       PaStreamCallbackFlags statusFlags, void *userData )

{

    /* Cast data passed through stream to our structure. */

    paTestData *data = (paTestData*)userData;

    float *out = (float*)outputBuffer;

    unsigned int i;

    int result = paContinue;

    /* supress unused parameter warnings */

    (void) inputBuffer;

    (void) timeInfo;

    (void) statusFlags;

    for( i=0; i<framesPerBuffer; i++ )

    {

        switch( data->state )

        {

        case STATE_BKG_IDLE:

            *out++ = 0.0;  /* left */

            *out++ = 0.0;  /* right */

            --data->idleCountdown;

            if( data->idleCountdown <= 0 ) result = paComplete;

            break;

        case STATE_BKG_BEEPING:

            if( data->beepCountdown <= 0 )

            {

                data->state = STATE_BKG_IDLE;

                *out++ = 0.0;  /* left */

                *out++ = 0.0;  /* right */

            }

            else

            {

                /* Play sawtooth wave. */

                *out++ = data->leftPhase;  /* left */

                *out++ = data->rightPhase;  /* right */

                /* Generate simple sawtooth phaser that ranges between -1.0 and 1.0. */

                data->leftPhase += 0.01f;

                /* When signal reaches top, drop back down. */

                if( data->leftPhase >= 1.0f ) data->leftPhase -= 2.0f;

                /* higher pitch so we can distinguish left and right. */

                data->rightPhase += 0.03f;

                if( data->rightPhase >= 1.0f ) data->rightPhase -= 2.0f;

            }

            --data->beepCountdown;

            break;

        }

    }

    return result;

}

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

static PaError DoTest( int flags )

{

    PaStream *stream;

    PaError    err = paNoError;

    paTestData data;

    PaStreamParameters outputParameters;

    InitializeTestData( &data );       

    outputParameters.device = Pa_GetDefaultOutputDevice();

    if (outputParameters.device == paNoDevice) {

      fprintf(stderr,"Error: No default output device.\n");

      goto error;

    }

    outputParameters.channelCount = 2;

    outputParameters.hostApiSpecificStreamInfo = NULL;

    outputParameters.sampleFormat = paFloat32;

    outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency;

    /* Open an audio I/O stream. */

    err = Pa_OpenStream(

        &stream,

        NULL,                         /* no input */

        &outputParameters,

        SAMPLE_RATE,

        FRAMES_PER_BUFFER,            /* frames per buffer */

        paClipOff | flags,      /* we won't output out of range samples so don't bother clipping them */

        patestCallback,

        &data );

    if( err != paNoError ) goto error;

    err = Pa_StartStream( stream );

    if( err != paNoError ) goto error;

    printf("hear \"BEEP\"\n" );

    fflush(stdout);

    while( ( err = Pa_IsStreamActive( stream ) ) == 1 ) Pa_Sleep(SLEEP_MSEC);

    if( err < 0 ) goto error;

    err = Pa_StopStream( stream );

    if( err != paNoError ) goto error;

    err = Pa_CloseStream( stream );

    if( err != paNoError ) goto error;

    return err;

error:

    return err;

}

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

int main(void);

int main(void)

{

    PaError    err = paNoError;

    int        i;

    /* Initialize library before making any other calls. */

    err = Pa_Initialize();

    if( err != paNoError ) goto error;

    printf("PortAudio Test: Testing stream playback with no priming.\n");

    printf("PortAudio Test: you should see BEEP before you hear it.\n");

    printf("BEEP %d times.\n", NUM_BEEPS );

    for( i=0; i< NUM_BEEPS; ++i )

    {

        err = DoTest( 0 );

        if( err != paNoError )

            goto error;

    }

    printf("PortAudio Test: Testing stream playback with priming.\n");

    printf("PortAudio Test: you should see BEEP around the same time you hear it.\n");

    for( i=0; i< NUM_BEEPS; ++i )

    {

        err = DoTest( paPrimeOutputBuffersUsingStreamCallback );

        if( err != paNoError )

            goto error;

    }

    printf("Test finished.\n");

    Pa_Terminate();

    return err;

error:

    Pa_Terminate();

    fprintf( stderr, "An error occured while using the portaudio stream\n" );

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

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

    return err;

}