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root / src / portaudio_20161030_catalina_patch / test / patest_callbackstop.c @ 164:9fa11135915a

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/** @file patest_callbackstop.c
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        @ingroup test_src
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        @brief Test the paComplete callback result code.
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        @author Ross Bencina <rossb@audiomulch.com>
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*/
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/*
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 * $Id$
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 *
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 * This program uses the PortAudio Portable Audio Library.
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 * For more information see: http://www.portaudio.com/
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 * Copyright (c) 1999-2000 Ross Bencina and Phil Burk
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining
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 * a copy of this software and associated documentation files
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 * (the "Software"), to deal in the Software without restriction,
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 * including without limitation the rights to use, copy, modify, merge,
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 * publish, distribute, sublicense, and/or sell copies of the Software,
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 * and to permit persons to whom the Software is furnished to do so,
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 * subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be
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 * included in all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 */
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/*
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 * The text above constitutes the entire PortAudio license; however, 
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 * the PortAudio community also makes the following non-binding requests:
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 *
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 * Any person wishing to distribute modifications to the Software is
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 * requested to send the modifications to the original developer so that
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 * they can be incorporated into the canonical version. It is also 
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 * requested that these non-binding requests be included along with the 
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 * license above.
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 */
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#include <stdio.h>
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#include <math.h>
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#include "portaudio.h"
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#define NUM_SECONDS   (5)
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#define NUM_LOOPS     (4)
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#define SAMPLE_RATE   (44100)
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#define FRAMES_PER_BUFFER  (67)
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#ifndef M_PI
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#define M_PI  (3.14159265)
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#endif
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#define TABLE_SIZE   (200)
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typedef struct
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{
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    float sine[TABLE_SIZE];
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    int phase;
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    unsigned long generatedFramesCount;
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    volatile int callbackReturnedPaComplete;
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    volatile int callbackInvokedAfterReturningPaComplete;
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    char message[100];
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}
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TestData;
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/*
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   This routine will be called by the PortAudio stream when audio is needed.
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   It may be called at interrupt level on some machines so don't do anything
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   that could mess up the system like calling malloc() or free().
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*/
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static int TestCallback( const void *input, void *output,
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                            unsigned long frameCount,
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                            const PaStreamCallbackTimeInfo* timeInfo,
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                            PaStreamCallbackFlags statusFlags,
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                            void *userData )
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{
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    TestData *data = (TestData*)userData;
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    float *out = (float*)output;
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    unsigned long i;
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    float x;
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    (void) input;       /* Prevent unused variable warnings. */
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    (void) timeInfo;
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    (void) statusFlags;
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    if( data->callbackReturnedPaComplete )
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        data->callbackInvokedAfterReturningPaComplete = 1;
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    for( i=0; i<frameCount; i++ )
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    {
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        /* generate tone */
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        x = data->sine[ data->phase++ ];
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        if( data->phase >= TABLE_SIZE )
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            data->phase -= TABLE_SIZE;
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        *out++ = x;  /* left */
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        *out++ = x;  /* right */
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    }
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    data->generatedFramesCount += frameCount;
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    if( data->generatedFramesCount >= (NUM_SECONDS * SAMPLE_RATE) )
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    {
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        data->callbackReturnedPaComplete = 1;
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        return paComplete;
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    }
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    else
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    {
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        return paContinue;
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    }
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}
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/*
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 * This routine is called by portaudio when playback is done.
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 */
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static void StreamFinished( void* userData )
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{
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   TestData *data = (TestData *) userData;
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   printf( "Stream Completed: %s\n", data->message );
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}
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/*----------------------------------------------------------------------------*/
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int main(void);
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int main(void)
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{
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    PaStreamParameters outputParameters;
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    PaStream *stream;
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    PaError err;
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    TestData data;
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    int i, j;
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    printf( "PortAudio Test: output sine wave. SR = %d, BufSize = %d\n",
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            SAMPLE_RATE, FRAMES_PER_BUFFER );
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    /* initialise sinusoidal wavetable */
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    for( i=0; i<TABLE_SIZE; i++ )
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    {
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        data.sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
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    }
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    err = Pa_Initialize();
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    if( err != paNoError ) goto error;
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    outputParameters.device                    = Pa_GetDefaultOutputDevice();
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    if (outputParameters.device == paNoDevice) {
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      fprintf(stderr,"Error: No default output device.\n");
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      goto error;
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    }
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    outputParameters.channelCount              = 2;               /* stereo output */
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    outputParameters.sampleFormat              = paFloat32;       /* 32 bit floating point output */
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    outputParameters.suggestedLatency          = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
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    outputParameters.hostApiSpecificStreamInfo = NULL;
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    err = Pa_OpenStream(
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              &stream,
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              NULL, /* no input */
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              &outputParameters,
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              SAMPLE_RATE,
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              FRAMES_PER_BUFFER,
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              paClipOff,      /* output will be in-range, so no need to clip */
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              TestCallback,
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              &data );
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    if( err != paNoError ) goto error;
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    sprintf( data.message, "Loop: XX" );
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    err = Pa_SetStreamFinishedCallback( stream, &StreamFinished );
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    if( err != paNoError ) goto error;
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    printf("Repeating test %d times.\n", NUM_LOOPS );
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    for( i=0; i < NUM_LOOPS; ++i )
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    {
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        data.phase = 0;
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        data.generatedFramesCount = 0;
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        data.callbackReturnedPaComplete = 0;
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        data.callbackInvokedAfterReturningPaComplete = 0;
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        sprintf( data.message, "Loop: %d", i );
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        err = Pa_StartStream( stream );
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        if( err != paNoError ) goto error;
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        printf("Play for %d seconds.\n", NUM_SECONDS );
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        /* wait for the callback to complete generating NUM_SECONDS of tone */
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        do
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        {
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            Pa_Sleep( 500 );
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        }
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        while( !data.callbackReturnedPaComplete );
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        printf( "Callback returned paComplete.\n" );
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        printf( "Waiting for buffers to finish playing...\n" );
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        /* wait for stream to become inactive,
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           or for a timeout of approximately NUM_SECONDS
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         */
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        j = 0;
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        while( (err = Pa_IsStreamActive( stream )) == 1 && j < NUM_SECONDS * 2 )
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        {
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            printf(".\n" );
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            Pa_Sleep( 500 );
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            ++j;
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        }
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        if( err < 0 )
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        {
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            goto error;
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        }
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        else if( err == 1 )
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        {
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            printf( "TEST FAILED: Timed out waiting for buffers to finish playing.\n" );
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        }
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        else
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        {
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            printf("Buffers finished.\n" );
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        }
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        if( data.callbackInvokedAfterReturningPaComplete )
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        {
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            printf( "TEST FAILED: Callback was invoked after returning paComplete.\n" );
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        }
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        err = Pa_StopStream( stream );
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        if( err != paNoError ) goto error;
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        printf( "sleeping for 1 second...\n" );
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        Pa_Sleep( 1000 );
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    }
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    err = Pa_CloseStream( stream );
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    if( err != paNoError ) goto error;
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    Pa_Terminate();
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    printf("Test finished.\n");
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    return err;
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error:
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    Pa_Terminate();
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    fprintf( stderr, "An error occured while using the portaudio stream\n" );
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    fprintf( stderr, "Error number: %d\n", err );
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    fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
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    return err;
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}