SV platform dependency builds

/** @file patest_write_stop_threads.c

        @brief Call Pa_StopStream() from another thread to see if PortAudio hangs.

        @author Bjorn Roche of XO Audio (www.xoaudio.com)

        @author Ross Bencina

        @author Phil Burk

*/

/*

 * $Id$

 *

 * 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 <unistd.h>

#include <math.h>

#include <memory.h>

/* pthread may only be available on Mac and Linux. */

#include <pthread.h>

#include "portaudio.h"

#define SAMPLE_RATE         (44100)

#define FRAMES_PER_BUFFER   (2048)

static float s_buffer[FRAMES_PER_BUFFER][2]; /* stereo output buffer */

/**

 * WARNING: PortAudio is NOT thread safe. DO NOT call PortAudio

 * from multiple threads without synchronization. This test uses

 * PA in an ILLEGAL WAY in order to try to flush out potential hang bugs.

 * The test calls Pa_WriteStream() and Pa_StopStream() simultaneously

 * from separate threads in order to try to cause Pa_StopStream() to hang.

 * In the main thread we write to the stream in a loop.

 * Then try stopping PA from another thread to see if it hangs.

 *

 * @note: Do not expect this test to pass. The test is only here

 * as a debugging aid for hang bugs. Since this test uses PA in an

 * illegal way, it may fail for reasons that are not PA bugs.

 */

/* Wait for awhile then abort the stream. */

void *stop_thread_proc(void *arg)

{

    PaStream *stream = (PaStream *)arg;

    PaTime time;

    for (int i = 0; i < 20; i++)

    {

        /* ILLEGAL unsynchronised call to PA, see comment above */

        time = Pa_GetStreamTime( stream );

        printf("Stream time = %f\n", time);

        fflush(stdout);

        usleep(100 * 1000);

    }

    printf("Call Pa_StopStream()\n");

    fflush(stdout);

    /* ILLEGAL unsynchronised call to PA, see comment above */

    PaError err = Pa_StopStream( stream );

    printf("Pa_StopStream() returned %d\n", err);

    fflush(stdout);

    return stream;

}

int main(void);

int main(void)

{

    PaStreamParameters outputParameters;

    PaStream *stream;

    PaError err;

    int result;

    pthread_t thread;

    printf( "PortAudio Test: output silence and stop from another thread. SR = %d, BufSize = %d\n",

            SAMPLE_RATE, FRAMES_PER_BUFFER);

    err = Pa_Initialize();

    if( err != paNoError ) goto error;

    outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */

    outputParameters.channelCount = 2;       /* stereo output */

    outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */

    outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency * 5;

    outputParameters.hostApiSpecificStreamInfo = NULL;

    /* open the stream */

    err = Pa_OpenStream(

              &stream,

              NULL, /* no input */

              &outputParameters,

              SAMPLE_RATE,

              FRAMES_PER_BUFFER,

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

              NULL, /* no callback, use blocking API */

              NULL ); /* no callback, so no callback userData */

    if( err != paNoError ) goto error;

    result = pthread_create(&thread, NULL /* attributes */, stop_thread_proc, stream);

    /* start the stream */

    err = Pa_StartStream( stream );

    if( err != paNoError ) goto error;

    /* clear buffer */

    memset( s_buffer, 0, sizeof(s_buffer) );

    /* play the silent buffer many times */

    while( Pa_IsStreamActive(stream) > 0 )

    {

        err = Pa_WriteStream( stream, s_buffer, FRAMES_PER_BUFFER );

        printf("Pa_WriteStream returns %d = %s\n", err, Pa_GetErrorText( err ));

        if( err != paNoError )

        {

            err = paNoError;

            break;

        };

    }

    printf("Try to join the thread that called Pa_StopStream().\n");

    result = pthread_join( thread, NULL );

    printf("pthread_join returned %d\n", result);

    /* close, and terminate */

    printf("Call Pa_CloseStream\n");

    err = Pa_CloseStream( stream );

    if( err != paNoError ) goto error;

    Pa_Terminate();

    printf("Test finished.\n");

    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;

}