C++ Pa_GetDefaultOutputDeviceID函数代码示例

static int portaudio_load_default (portaudio_driver_t *driver, 
                                    int numDevices, 
                                    int capturing, 
                                    int playing, 
                                    int* inputDeviceID,
                                    int* outputDeviceID)
{
    const PaDeviceInfo *pdi;
    int i,j;
    int found = 0;
    
    PALog("Look for default driver\n");
    
    *inputDeviceID = Pa_GetDefaultInputDeviceID();
    *outputDeviceID = Pa_GetDefaultOutputDeviceID();

    for(i=0; i<numDevices; i++)
    {
        pdi = Pa_GetDeviceInfo(i);
        PALog("---------------------------------------------- #%d\n", i);
        
        if (i == Pa_GetDefaultInputDeviceID()) {
            driver->capture_nchannels = (capturing) ? pdi->maxInputChannels : 0;
            strcpy (driver->driver_name,pdi->name);
            found = 1;
        }
        
        if (i == Pa_GetDefaultOutputDeviceID()){
            driver->playback_nchannels = (playing) ? pdi->maxOutputChannels : 0;
            strcpy (driver->driver_name,pdi->name);
            found = 1;
        }
        
        PALog("\nName         = %s\n", pdi->name);
        PALog("Max Inputs = %d ", pdi->maxInputChannels);
        PALog("Max Outputs = %d\n", pdi->maxOutputChannels);
        if( pdi->numSampleRates == -1 ){
            PALog("Sample Rate Range = %f to %f\n", pdi->sampleRates[0], pdi->sampleRates[1]);
        }else{
            PALog("Sample Rates =");
            for(j=0; j<pdi->numSampleRates; j++){
                PALog(" %8.2f,", pdi->sampleRates[j]);
            }
            PALog("\n");
        }
        
        PALog("Native Sample Formats = ");
        if (pdi->nativeSampleFormats & paInt8)        PALog("paInt8, ");
        if (pdi->nativeSampleFormats & paUInt8)       PALog("paUInt8, ");
        if (pdi->nativeSampleFormats & paInt16)       PALog("paInt16, ");
        if (pdi->nativeSampleFormats & paInt32)       PALog("paInt32, ");
        if (pdi->nativeSampleFormats & paFloat32)     PALog("paFloat32, ");
        if (pdi->nativeSampleFormats & paInt24)       PALog("paInt24, ");
        if (pdi->nativeSampleFormats & paPackedInt24) PALog("paPackedInt24, ");
        PALog("\n");
    }
    
    return found;
}

int main(void)
{
    PortAudioStream *stream;
    PaError err;
    
    err = Pa_Initialize();
    if( err != paNoError ) goto error;
    
    printf("PortAudio Test: input device ID  = %d\n", Pa_GetDefaultInputDeviceID() );
    printf("PortAudio Test: output device ID = %d\n", Pa_GetDefaultOutputDeviceID() );
    err = Pa_OpenStream(
              &stream,
              Pa_GetDefaultInputDeviceID(), /* default output device */
              2,               /* stereo input */
              PA_SAMPLE_TYPE,
              NULL,
              Pa_GetDefaultOutputDeviceID(), /* default output device */
              2,               /* stereo output */
              PA_SAMPLE_TYPE,
              NULL,
              SAMPLE_RATE,
              FRAMES_PER_BUFFER,            /* frames per buffer */
              0,               /* number of buffers, if zero then use default minimum */
              paClipOff,       /* we won't output out of range samples so don't bother clipping them */
              wireCallback,
              NULL );          /* no data */
    if( err != paNoError ) goto error;
    
    err = Pa_StartStream( stream );
    if( err != paNoError ) goto error;
    
    printf("Full duplex sound test in progress.\n");
    printf("Hit ENTER to exit test.\n");  fflush(stdout);
    getchar();
    
    printf("Closing stream.\n");
    err = Pa_CloseStream( stream );
    if( err != paNoError ) goto error;
    Pa_Terminate();
    
    printf("Full duplex sound test complete.\n"); fflush(stdout);
    return 0;
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 -1;
}

int main( int argc, char** argv) {
	std::ifstream m_f1;
	std::string in, out, fat;

	if( argc == 2 ) {
		fat = "none";
		in = argv[1];
	} else if( argc == 3 ) {
		fat = argv[1];
		in = argv[2];
	} else {
		std::cout << "Usage: " << argv[0] << " [fat_file] input_file" << std::endl;
		return EXIT_FAILURE;
	}

	Adpcm file(in,fat);
	PaError pa_err=Pa_Initialize();
	PaStream *stream;
	pa_err = Pa_OpenStream(&stream, paNoDevice, 0, paInt16, NULL, \
			Pa_GetDefaultOutputDeviceID(), \
			2, paInt16, NULL, 48000, 1234, 0, 0, \
			c_callback, &file.audioQueue);
	pa_err=Pa_StartStream(stream);
	while( !file.finished() || file.audioQueue.size() > 0) {
		sleep(1);

	}
	pa_err=Pa_CloseStream(stream);
	pa_err=Pa_Terminate();

	return EXIT_SUCCESS;
}

int main(int argc, char* argv[])
{
    PaStream *stream;
    PaError err;
    patest1data data;
    int i;
    int inputDevice = Pa_GetDefaultInputDeviceID();
    int outputDevice = Pa_GetDefaultOutputDeviceID();
    /* initialise sinusoidal wavetable */
    for( i=0; i<100; i++ )
        data.sine[i] = sin( ((double)i/100.) * M_PI * 2. );
    data.phase = 0;
    data.sampsToGo = 44100 * 4;   // 20 seconds
    /* initialise portaudio subsytem */
    Pa_Initialize();
    err = Pa_OpenStream(
              &stream,
              inputDevice,
              2,              /* stereo input */
              paFloat32,  /* 32 bit floating point input */
              NULL,
              outputDevice,
              2,              /* stereo output */
              paFloat32,      /* 32 bit floating point output */
              NULL,
              44100.,
              //    22050,          /* half second buffers */
              //    4,              /* four buffers */
              512,          /* half second buffers */
              0,              /* four buffers */
              paClipOff,      /* we won't output out of range samples so don't bother clipping them */
              patest1Callback,
              &data );
    if( err == paNoError )
    {
        err = Pa_StartStream( stream );
        //       printf( "Press any key to end.\n" );
        //       getc( stdin ); //wait for input before exiting
        //       Pa_AbortStream( stream );

        printf( "Waiting for stream to complete...\n" );

        while( Pa_StreamActive( stream ) )
            Pa_Sleep(1000); /* sleep until playback has finished */

        err = Pa_CloseStream( stream );
    }
    else
    {
        fprintf( stderr, "An error occured while opening the portaudio stream\n" );
        if( err == paHostError )
            fprintf( stderr, "Host error number: %d\n", Pa_GetHostError() );
        else
            fprintf( stderr, "Error number: %d\n", err );
    }
    Pa_Terminate();
    printf( "bye\n" );

    return 0;
}

static int TestBadActions( void )
{
    PortAudioStream *stream = NULL;
    PaError result;
    PaQaData myData;
    /* Setup data for synthesis thread. */
    myData.framesLeft = (unsigned long) (SAMPLE_RATE * 100); /* 100 seconds */
    myData.numChannels = 1;
    myData.mode = MODE_OUTPUT;
    /* Default output. */
    EXPECT( "TestBadActions", ((result = Pa_OpenStream(
                           &stream,
                           paNoDevice, 0, paFloat32, NULL,
                           Pa_GetDefaultOutputDeviceID(), 2, paFloat32, NULL,
                           SAMPLE_RATE, FRAMES_PER_BUFFER, NUM_BUFFERS,
                           paClipOff,
                           QaCallback,
                           &myData )
             ) == 0) );
    HOPEFOR( "start", ((result = Pa_StartStream( NULL )) == paBadStreamPtr) );
    HOPEFOR( "stop", ((result = Pa_StopStream( NULL )) == paBadStreamPtr) );
    HOPEFOR( "active?", ((result = Pa_StreamActive( NULL )) == paBadStreamPtr) );
    HOPEFOR( "close", ((result = Pa_CloseStream( NULL )) == paBadStreamPtr) );
    HOPEFOR( "time?", ((result = (PaError)Pa_StreamTime( NULL )) != 0) );
    HOPEFOR( "CPULoad?", ((result = (PaError)Pa_GetCPULoad( NULL )) != 0) );
error:
    if( stream != NULL ) Pa_CloseStream( stream );
    return result;
}

int main(void)
{
    int      i,j;
    int      numDevices;
    const    PaDeviceInfo *pdi;
    PaError  err;
    Pa_Initialize();
    numDevices = Pa_CountDevices();
    if( numDevices < 0 )
    {
        printf("ERROR: Pa_CountDevices returned 0x%x\n", numDevices );
        err = numDevices;
        goto error;
    }
    printf("Number of devices = %d\n", numDevices );
    for( i=0; i<numDevices; i++ )
    {
        pdi = Pa_GetDeviceInfo( i );
        printf("---------------------------------------------- #%d", i );
        if( i == Pa_GetDefaultInputDeviceID() ) printf(" DefaultInput");
        if( i == Pa_GetDefaultOutputDeviceID() ) printf(" DefaultOutput");
        printf("\nName         = %s\n", pdi->name );
        printf("Max Inputs   = %d", pdi->maxInputChannels  );
        printf(", Max Outputs = %d\n", pdi->maxOutputChannels  );
        if( pdi->numSampleRates == -1 )
        {
            printf("Sample Rate Range = %f to %f\n", pdi->sampleRates[0], pdi->sampleRates[1] );
        }
        else
        {
            printf("Sample Rates =");
            for( j=0; j<pdi->numSampleRates; j++ )
            {
                printf(" %8.2f,", pdi->sampleRates[j] );
            }
            printf("\n");
        }
        printf("Native Sample Formats = ");
        if( pdi->nativeSampleFormats & paInt8 )        printf("paInt8, ");
        if( pdi->nativeSampleFormats & paUInt8 )       printf("paUInt8, ");
        if( pdi->nativeSampleFormats & paInt16 )       printf("paInt16, ");
        if( pdi->nativeSampleFormats & paInt32 )       printf("paInt32, ");
        if( pdi->nativeSampleFormats & paFloat32 )     printf("paFloat32, ");
        if( pdi->nativeSampleFormats & paInt24 )       printf("paInt24, ");
        if( pdi->nativeSampleFormats & paPackedInt24 ) printf("paPackedInt24, ");
        printf("\n");
    }
    Pa_Terminate();

    printf("----------------------------------------------\n");
    return 0;
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;
}

int main(void)
{
    PortAudioStream *stream;
    PaError err;
    paTestData data;
    int i;
    printf("PortAudio Test: output sine wave. SR = %d, BufSize = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER);
    /* initialise sinusoidal wavetable */
    for( i=0; i<TABLE_SIZE; i++ )
    {
        data.sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
    }
    data.left_phase = data.right_phase = data.sleepTime = 0;
    err = Pa_Initialize();
    if( err != paNoError ) goto error;
    err = Pa_OpenStream(
              &stream,
              paNoDevice,/* default input device */
              0,              /* no input */
              paFloat32,  /* 32 bit floating point input */
              NULL,
              Pa_GetDefaultOutputDeviceID(), /* default output device */
              2,          /* stereo output */
              paFloat32,      /* 32 bit floating point output */
              NULL,
              SAMPLE_RATE,
              FRAMES_PER_BUFFER,
              0,              /* number of buffers, if zero then use default minimum */
              paClipOff,      /* 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;

    while( data.sleepTime < (2 * MSEC_PER_BUFFER) )
    {
        printf("SleepTime = %d\n", data.sleepTime );
        Pa_Sleep( data.sleepTime );
    }

    printf("Try to stop stream.\n");
    err = Pa_StopStream( stream ); /* */
    err = Pa_AbortStream( stream ); /* */
    if( err != paNoError ) goto error;
    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;
}

static int
portaudio_driver_set_parameters (portaudio_driver_t* driver,
				   jack_nframes_t nframes,
				   jack_nframes_t rate)
{
	int capturing = driver->capturing;
	int playing = driver->playing;

	int err = Pa_OpenStream(
		&driver->stream,
		((capturing) ? Pa_GetDefaultInputDeviceID() : paNoDevice),	
		((capturing) ? driver->capture_nchannels : 0),             
		paFloat32,		/* 32-bit float input */
		NULL,
		((playing) ? Pa_GetDefaultOutputDeviceID() : paNoDevice),
		((playing) ?  driver->playback_nchannels : 0),        
		paFloat32,		/* 32-bit float output */
		NULL,
		rate,			/* sample rate */
		nframes,		/* frames per buffer */
		0,				/* number of buffers = default min */
		paClipOff,		/* we won't output out of
						* range samples so don't
						* bother clipping them */
		paCallback,
		driver);
    
	if (err == paNoError) {
        
		driver->period_usecs = (((float) driver->frames_per_cycle)
					/ driver->frame_rate) * 1000000.0f;
		driver->frame_rate = rate;
		driver->frames_per_cycle = nframes;

		/* tell engine about buffer size */
		if (driver->engine) {
			if (driver->engine->set_buffer_size (
				    driver->engine, driver->frames_per_cycle)) {
				jack_error ("portaudio: cannot set engine buffer size to %d (check MIDI)", driver->frames_per_cycle);
				return -1;
			}
				
		}
		return 0;

	} else { 

		// JOQ: this driver is dead.  How do we terminate it?
		Pa_Terminate();
		jack_error("Unable to set portaudio parameters");
		jack_error("Error number: %d", err);
		jack_error("Error message: %s", Pa_GetErrorText(err));
		return EIO;
	}
}

int main(void)
{
	PortAudioStream *stream;
	PaError err;
	paTestData data = {0};
	double load;
	printf("PortAudio Test: output sine wave. SR = %d, BufSize = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER);
	/* initialise sinusoidal wavetable */

	err = Pa_Initialize();
	if( err != paNoError ) goto error;
	err = Pa_OpenStream(
				&stream,
				paNoDevice,/* default input device */
				0,              /* no input */
				paFloat32,		/* 32 bit floating point input */
				NULL,
				Pa_GetDefaultOutputDeviceID(), /* default output device */
				1,          /* mono output */
				paFloat32,      /* 32 bit floating point output */
				NULL,
				SAMPLE_RATE,
				FRAMES_PER_BUFFER,            /* frames per buffer */
				0,              /* number of buffers, if zero then use default minimum */
				paClipOff,      /* 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;
	
	do
	{
		data.numSines++;
		Pa_Sleep( 200 );
		
		load = Pa_GetCPULoad( stream );
		printf("numSines = %d, CPU load = %f\n", data.numSines, load );
	} while( load < 0.8 );
	
	err = Pa_StopStream( stream );
	if( err != paNoError ) goto error;
	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;
}

int main(void)
{
    PortAudioStream *stream;
    PaError err;
    paTestData data;
    int totalSamps;

    printf("PortAudio Test: output " FORMAT_NAME "\n");


    data.left_phase = data.right_phase = 0.0;
    data.framesToGo = totalSamps =  NUM_SECONDS * SAMPLE_RATE; /* Play for a few seconds. */
    err = Pa_Initialize();
    if( err != paNoError ) goto error;

    err = Pa_OpenStream(
              &stream,
              paNoDevice,/* default input device */
              0,              /* no input */
              TEST_FORMAT,
              NULL,
              Pa_GetDefaultOutputDeviceID(), /* default output device */
              2,          /* stereo output */
              TEST_FORMAT,
              NULL,
              SAMPLE_RATE,
              FRAMES_PER_BUFFER,
              0,              /* number of buffers, if zero then use default minimum */
              paClipOff,      /* 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("Waiting %d seconds for sound to finish.\n", NUM_SECONDS );
    while( Pa_StreamActive( stream ) ) Pa_Sleep(10);

    err = Pa_CloseStream( stream );
    if( err != paNoError ) goto error;
    Pa_Terminate();

    printf("PortAudio Test Finished: " FORMAT_NAME "\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;
}

PaError TestPlayback( paTestData *dataPtr )
{
    PaError    err;
    int        i;
    int        lastIndex = 0;

    /* Playback recorded data. */
    dataPtr->frameIndex = 0;
    printf("Begin playback.\n"); fflush(stdout);

/* Open output stream if not already open. */
    if( dataPtr->outputStream == NULL )
    {
        err = Pa_OpenStream(
                  &dataPtr->outputStream,
                  paNoDevice,
                  0,               /* NO input */
                  PA_SAMPLE_TYPE,
                  NULL,
                  Pa_GetDefaultOutputDeviceID(),
                  dataPtr->samplesPerFrame,               /* stereo output */
                  PA_SAMPLE_TYPE,
                  NULL,
                  SAMPLE_RATE,
                  FRAMES_PER_BUFFER,            /* frames per buffer */
                  0,               /* number of buffers, if zero then use default minimum */
                  paClipOff,       /* we won't output out of range samples so don't bother clipping them */
                  playCallback,
                  dataPtr );
        if( err != paNoError ) goto error;
    }

    err = Pa_StartStream( dataPtr->outputStream );
    if( err != paNoError ) goto error;

    printf("Waiting for playback to finish.\n"); fflush(stdout);
    for( i=0; i<(NUM_SECONDS*1000/SLEEP_DUR_MSEC); i++ )
    {
        int frameIndex, delta;
        Pa_Sleep(SLEEP_DUR_MSEC);
        frameIndex = dataPtr->frameIndex;
        delta = frameIndex - lastIndex;
        lastIndex = frameIndex;
        printf("index = %d, delta = %d\n", frameIndex, delta ); fflush(stdout);
    }

    err = Pa_StopStream( dataPtr->outputStream );
    if( err != paNoError ) goto error;
    
error:
    return err;
}

PaError TestOnce( int buffersize )
{
    PortAudioStream *stream;
    PaError err;
    paTestData data;
    int i;
    int totalSamps;
    /* initialise sinusoidal wavetable */
    for( i=0; i<TABLE_SIZE; i++ )
    {
        data.sine[i] = (short) (30000.0 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ));
    }
    data.left_phase = data.right_phase = 0;
    data.sampsToGo = totalSamps =  NUM_SECONDS * SAMPLE_RATE; /* Play for a few seconds. */
    err = Pa_Initialize();
    if( err != paNoError ) goto error;
    err = Pa_OpenStream(
              &stream,
              paNoDevice,/* default input device */
              0,              /* no input */
              paInt16,  /* sample format */
              NULL,
              Pa_GetDefaultOutputDeviceID(), /* default output device */
              2,              /* stereo output */
              paInt16,        /* sample format */
              NULL,
              SAMPLE_RATE,
              buffersize,           /* frames per buffer */
              0,              /* number of buffers, if zero then use default minimum */
              paClipOff,      /* we won't output out of range samples so don't bother clipping them */
              paSineCallback,
              &data );
    if( err != paNoError ) goto error;

    err = Pa_StartStream( stream );
    if( err != paNoError ) goto error;
    printf("Waiting for sound to finish.\n");
    fflush(stdout);
    Pa_Sleep(1000);
    err = Pa_CloseStream( stream );
    if( err != paNoError ) goto error;
    Pa_Terminate();
    return paNoError;
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;
}

long TPortAudioRenderer::OpenDefault(long inChan, long outChan, long bufferSize, long sampleRate)
{
    PaError err;
    const PaDeviceInfo* pdi;
    int numDevices;
    int inDevice;
    int outDevice;

    printf("Opening device : inChan: %ld outChan: %ld bufferSize: %ld sampleRate: %ld\n",
           inChan, outChan, bufferSize, sampleRate);

    numDevices = Pa_CountDevices();
    if (numDevices < 0) {
        printf("ERROR: Pa_CountDevices returned 0x%x\n", numDevices);
        err = numDevices;
        printf("Error while opening device: device open error %s\n", Pa_GetErrorText(err));
		fStream = 0;
		return OPEN_ERR;
    } else {
        DisplayDevices();
    }

    // Compute input and output number : to be checked
    inDevice = Pa_GetDefaultInputDeviceID();
    pdi = Pa_GetDeviceInfo(inDevice);

    if (pdi != 0) {
        if (pdi->maxInputChannels == 0) {
            inDevice = GetFirstValidInputDevice();
            pdi = Pa_GetDeviceInfo(inDevice);
        }
        inChan = (inChan < pdi->maxInputChannels) ? inChan : pdi->maxInputChannels;
        printf("Input channel number %ld\n", inChan);
    }

    outDevice = Pa_GetDefaultOutputDeviceID();
    pdi = Pa_GetDeviceInfo(outDevice);

    if (pdi != 0) {
        if (pdi->maxOutputChannels == 0) {
            outDevice = GetFirstValidOutputDevice();
            pdi = Pa_GetDeviceInfo(outDevice);
        }
        outChan = (outChan < pdi->maxOutputChannels) ? outChan : pdi->maxOutputChannels;
        printf("Output channel number %ld\n", outChan);
    }
	
	return Open(inDevice, outDevice, inChan, outChan, bufferSize, sampleRate);
}

static const PaDeviceInfo *select_device(const char *device)
{
#if (USE_PORTAUDIO == 19)
	int numDevices = Pa_GetDeviceCount();
#else
	int numDevices = Pa_CountDevices();
#endif
	if (numDevices < 0)
		return NULL;

#if (USE_PORTAUDIO == 19)
	PaDeviceIndex i = 0, selectedIndex = 0;
#else
	PaDeviceID i = 0, selectedIndex = 0;
#endif
	const PaDeviceInfo *deviceInfo = NULL;
	const PaDeviceInfo *selectedDeviceInfo = NULL;

	if (option_device_number >= 0) {
		selectedIndex = option_device_number;
		selectedDeviceInfo = Pa_GetDeviceInfo(selectedIndex);
	}

	if (device == NULL) {
#if (USE_PORTAUDIO == 19)
		selectedIndex = Pa_GetDefaultOutputDevice();
#else
		selectedIndex = Pa_GetDefaultOutputDeviceID();
#endif
		selectedDeviceInfo = Pa_GetDeviceInfo(selectedIndex);
	}

	if (selectedDeviceInfo == NULL) {
		for (i = 0; i < numDevices; i++) {
			deviceInfo = Pa_GetDeviceInfo(i);

			if (deviceInfo != NULL && !strcmp(device, deviceInfo->name)) {
				selectedIndex = i;
				selectedDeviceInfo = deviceInfo;
			}
		}
	}

	if (selectedDeviceInfo)
		update_output_parameters(selectedIndex, selectedDeviceInfo);
	return selectedDeviceInfo;
}

int main(void)
{
    PortAudioStream *stream;
    PaError err;

    err = Pa_Initialize();
    if( err != paNoError ) goto error;

    err = Pa_OpenStream(
              &stream,
              Pa_GetDefaultInputDeviceID(), /* default output device */
              2,               /* stereo input */
              PA_SAMPLE_TYPE,
              NULL,
              Pa_GetDefaultOutputDeviceID(), /* default output device */
              2,               /* stereo output */
              PA_SAMPLE_TYPE,
              NULL,
              SAMPLE_RATE,
              FRAMES_PER_BUFFER,
              0,             /* number of buffers, if zero then use default minimum */
              0, // paClipOff,     /* we won't output out of range samples so don't bother clipping them */
              fuzzCallback,
              NULL );
    if( err != paNoError ) goto error;

    err = Pa_StartStream( stream );
    if( err != paNoError ) goto error;

    printf("Hit ENTER to stop program.\n");
    getchar();
    err = Pa_CloseStream( stream );
    if( err != paNoError ) goto error;

    printf("Finished. gNumNoInputs = %d\n", gNumNoInputs );
    Pa_Terminate();
    return 0;

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 -1;
}