C++ Pa_OpenStream函数代码示例

int main(void)
{
    PaError    err;
    paTestData data = { 0 };
    long       i;
    double     rate;
    const    PaDeviceInfo *pdi;

    PortAudioStream *outputStream;
    PortAudioStream *inputStream;

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


    pdi = Pa_GetDeviceInfo( INPUT_DEVICE_ID );
    printf("Input device  = %s\n", pdi->name );
    pdi = Pa_GetDeviceInfo( OUTPUT_DEVICE_ID );
    printf("Output device = %s\n", pdi->name );

/* Open input stream. */
    err = Pa_OpenStream(
              &inputStream,
              INPUT_DEVICE_ID,
              SAMPLES_PER_FRAME,               /* stereo input */
              PA_SAMPLE_TYPE,
              NULL,
              paNoDevice,
              0,
              PA_SAMPLE_TYPE,
              NULL,
              INPUT_SAMPLE_RATE,
              FRAMES_PER_BUFFER,            /* frames per buffer */
              NUM_REC_BUFS,               /* number of buffers, if zero then use default minimum */
              paClipOff,       /* we won't output out of range samples so don't bother clipping them */
              recordCallback,
              &data );
    if( err != paNoError ) goto error;

    err = Pa_OpenStream(
              &outputStream,
              paNoDevice,
              0,               /* NO input */
              PA_SAMPLE_TYPE,
              NULL,
              OUTPUT_DEVICE_ID,
              SAMPLES_PER_FRAME,               /* stereo output */
              PA_SAMPLE_TYPE,
              NULL,
              OUTPUT_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,
              &data );
    if( err != paNoError ) goto error;

/* Record and playback multiple times. */
    for( i=0; i<2; i++ )
    {
        printf("Measuring INPUT ------------------------- \n");
        err = MeasureStreamRate( inputStream, &data, &rate );
        if( err != paNoError ) goto error;
        ReportRate( rate, INPUT_SAMPLE_RATE );

        printf("Measuring OUTPUT ------------------------- \n");
        err = MeasureStreamRate( outputStream, &data, &rate );
        if( err != paNoError ) goto error;
        ReportRate( rate, OUTPUT_SAMPLE_RATE );
    }

/* Clean up. */
    err = Pa_CloseStream( inputStream );
    if( err != paNoError ) goto error;

    err = Pa_CloseStream( outputStream );
    if( err != paNoError ) goto error;

    if( err != paNoError ) goto error;

    Pa_Terminate();
    
    printf("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 ) );
    if( err == paHostError )
    {
        fprintf( stderr, "Host Error number: %d\n", Pa_GetHostError() );
    }
    return -1;
}

static int TestAdvance( int mode, PaDeviceIndex deviceID, double sampleRate,
                        int numChannels, PaSampleFormat format )
{
    PaStreamParameters inputParameters, outputParameters, *ipp, *opp;
    PaStream *stream = NULL;
    PaError result = paNoError;
    PaQaData myData;
    #define FRAMES_PER_BUFFER  (64)
    
    /* Setup data for synthesis thread. */
    myData.framesLeft = (unsigned long) (sampleRate * 100); /* 100 seconds */
    myData.numChannels = numChannels;
    myData.mode = mode;
    myData.format = format;
    switch( format )
    {
    case paFloat32:
    case paInt32:
    case paInt24:
        myData.bytesPerSample = 4;
        break;
/*  case paPackedInt24:
        myData.bytesPerSample = 3;
        break; */
    default:
        myData.bytesPerSample = 2;
        break;
    }

    if( mode == MODE_INPUT )
    {
        inputParameters.device       = deviceID;
        inputParameters.channelCount = numChannels;
        inputParameters.sampleFormat = format;
        inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency;
        inputParameters.hostApiSpecificStreamInfo = NULL;
        ipp = &inputParameters;
    }
    else
        ipp = NULL;
    if( mode == MODE_OUTPUT )           /* Pa_GetDeviceInfo(paNoDevice) COREDUMPS!!! */
    {
        outputParameters.device       = deviceID;
        outputParameters.channelCount = numChannels;
        outputParameters.sampleFormat = format;
        outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
        outputParameters.hostApiSpecificStreamInfo = NULL;
        opp = &outputParameters;
    }
    else
        opp = NULL;

    if(paFormatIsSupported == Pa_IsFormatSupported( ipp, opp, sampleRate ))
    {
        printf("------ TestAdvance: %s, device = %d, rate = %g, numChannels = %d, format = %lu -------\n",
                ( mode == MODE_INPUT ) ? "INPUT" : "OUTPUT",
                deviceID, sampleRate, numChannels, (unsigned long)format);
        EXPECT( ((result = Pa_OpenStream( &stream,
                                          ipp,
                                          opp,
                                          sampleRate,
                                          FRAMES_PER_BUFFER,
                                          paClipOff,  /* we won't output out of range samples so don't bother clipping them */
                                          QaCallback,
                                          &myData ) ) == 0) );
        if( stream )
        {
            PaTime oldStamp, newStamp;
            unsigned long oldFrames;
            int minDelay = ( mode == MODE_INPUT ) ? 1000 : 400;
            /* Was:
            int minNumBuffers = Pa_GetMinNumBuffers( FRAMES_PER_BUFFER, sampleRate );
            int msec = (int) ((minNumBuffers * 3 * 1000.0 * FRAMES_PER_BUFFER) / sampleRate);
            */
            int msec = (int)( 3.0 *
                       (( mode == MODE_INPUT ) ? inputParameters.suggestedLatency : outputParameters.suggestedLatency ));
            if( msec < minDelay ) msec = minDelay;
            printf("msec = %d\n", msec);  /**/
            EXPECT( ((result=Pa_StartStream( stream )) == 0) );
            /* Check to make sure PortAudio is advancing timeStamp. */
            oldStamp = Pa_GetStreamTime(stream);
            Pa_Sleep(msec);
            newStamp = Pa_GetStreamTime(stream);
            printf("oldStamp = %g,newStamp = %g\n", oldStamp, newStamp ); /**/
            EXPECT( (oldStamp < newStamp) );
            /* Check to make sure callback is decrementing framesLeft. */
            oldFrames = myData.framesLeft;
            Pa_Sleep(msec);
            printf("oldFrames = %lu, myData.framesLeft = %lu\n", oldFrames,  myData.framesLeft ); /**/
            EXPECT( (oldFrames > myData.framesLeft) );
            EXPECT( ((result=Pa_CloseStream( stream )) == 0) );
            stream = NULL;
        }
    }
error:
    if( stream != NULL ) Pa_CloseStream( stream );
    return result;
}

int main(void)
{
    PaStreamParameters outputParameters;
    PaStream *stream;
    PaError err;
    int safeSineCount, stressedSineCount;
    int safeUnderflowCount, stressedUnderflowCount;
    paTestData data = {0};
    double load;


    printf("PortAudio Test: output sine waves, count underflows. SR = %d, BufSize = %d. MAX_LOAD = %f\n",
        SAMPLE_RATE, FRAMES_PER_BUFFER, (float)MAX_LOAD );

    err = Pa_Initialize();
    if( err != paNoError ) goto error;
    
    outputParameters.device = Pa_GetDefaultOutputDevice();  /* default output device */
    if (outputParameters.device == paNoDevice) {
      fprintf(stderr,"Error: No default output device.\n");
      goto error;
    }
    outputParameters.channelCount = 1;                      /* mono output */
    outputParameters.sampleFormat = paFloat32;              /* 32 bit floating point output */
    outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
    outputParameters.hostApiSpecificStreamInfo = NULL;

    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 */
              patestCallback,
              &data );    
    if( err != paNoError ) goto error;
    err = Pa_StartStream( stream );
    if( err != paNoError ) goto error;

    printf("Establishing load conditions...\n" );

    /* Determine number of sines required to get to 50% */
    do
    {
        data.sineCount++;
        Pa_Sleep( 100 );

        load = Pa_GetStreamCpuLoad( stream );
        printf("sineCount = %d, CPU load = %f\n", data.sineCount, load );
    }
    while( load < 0.5 && data.sineCount < (MAX_SINES-1));

    safeSineCount = data.sineCount;

    /* Calculate target stress value then ramp up to that level*/
    stressedSineCount = (int) (2.0 * data.sineCount * MAX_LOAD );
    if( stressedSineCount > MAX_SINES )
        stressedSineCount = MAX_SINES;
    for( ; data.sineCount < stressedSineCount; data.sineCount++ )
    {
        Pa_Sleep( 100 );
        load = Pa_GetStreamCpuLoad( stream );
        printf("STRESSING: sineCount = %d, CPU load = %f\n", data.sineCount, load );
    }
    
    printf("Counting underflows for 5 seconds.\n");
    data.countUnderflows = 1;
    Pa_Sleep( 5000 );

    stressedUnderflowCount = data.outputUnderflowCount;

    data.countUnderflows = 0;
    data.sineCount = safeSineCount;

    printf("Resuming safe load...\n");
    Pa_Sleep( 1500 );
    data.outputUnderflowCount = 0;
    Pa_Sleep( 1500 );
    load = Pa_GetStreamCpuLoad( stream );
    printf("sineCount = %d, CPU load = %f\n", data.sineCount, load );

    printf("Counting underflows for 5 seconds.\n");
    data.countUnderflows = 1;
    Pa_Sleep( 5000 );

    safeUnderflowCount = data.outputUnderflowCount;
    
    printf("Stop stream.\n");
    err = Pa_StopStream( stream );
    if( err != paNoError ) goto error;
    
    err = Pa_CloseStream( stream );
    if( err != paNoError ) goto error;
    
    Pa_Terminate();

    if( stressedUnderflowCount == 0 )
        printf("Test failed, no output underflows detected under stress.\n");
    else if( safeUnderflowCount != 0 )
//.........这里部分代码省略.........

int main( int argc, char **argv )
{
    PaStreamParameters outputParameters;
    PaStream *stream;
    PaError err;
    paTestData data;
    int    go;
    int    outLatency = 0;
    int    minLatency = DEFAULT_BUFFER_SIZE * 2;
    int    framesPerBuffer;
    double sampleRate = 44100.0;
    char   str[256];

    printf("pa_minlat - Determine minimum latency for your computer.\n");
    printf("  usage:         pa_minlat {userBufferSize}\n");
    printf("  for example:   pa_minlat 64\n");
    printf("Adjust your stereo until you hear a smooth tone in each speaker.\n");
    printf("Then try to find the smallest number of frames that still sounds smooth.\n");
    printf("Note that the sound will stop momentarily when you change the number of buffers.\n");

    /* Get bufferSize from command line. */
    framesPerBuffer = ( argc > 1 ) ? atol( argv[1] ) : DEFAULT_BUFFER_SIZE;
    printf("Frames per buffer = %d\n", framesPerBuffer );

    data.left_phase = data.right_phase = 0.0;

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

    outLatency = sampleRate * 200.0 / 1000.0; /* 200 msec. */

    /* Try different numBuffers in a loop. */
    go = 1;
    while( go )
    {
        outputParameters.device                    = Pa_GetDefaultOutputDevice(); /* Default output device. */
        outputParameters.channelCount              = 2;                           /* Stereo output */
        outputParameters.sampleFormat              = paFloat32;                   /* 32 bit floating point output. */
        outputParameters.suggestedLatency          = (double)outLatency / sampleRate; /* In seconds. */
        outputParameters.hostApiSpecificStreamInfo = NULL;
        
        printf("Latency = %d frames = %6.1f msec.\n", outLatency, outputParameters.suggestedLatency * 1000.0 );

        err = Pa_OpenStream(
                  &stream,
                  NULL, /* no input */
                  &outputParameters,
                  sampleRate,
                  framesPerBuffer,
                  paClipOff,      /* we won't output out of range samples so don't bother clipping them */
                  paminlatCallback,
                  &data );
        if( err != paNoError ) goto error;
        if( stream == NULL ) goto error;

        /* Start audio. */
        err = Pa_StartStream( stream );
        if( err != paNoError ) goto error;

        /* Ask user for a new nlatency. */
        printf("\nMove windows around to see if the sound glitches.\n");
        printf("Latency now %d, enter new number of frames, or 'q' to quit: ", outLatency );
        fgets( str, 256, stdin );
        {
            /* Get rid of newline */
            size_t l = strlen( str ) - 1;
            if( str[ l ] == '\n')
                str[ l ] = '\0';
        }
        if( str[0] == 'q' ) go = 0;
        else
        {
            outLatency = atol( str );
            if( outLatency < minLatency )
            {
                printf( "Latency below minimum of %d! Set to minimum!!!\n", minLatency );
                outLatency = minLatency;
            }
        }
        /* Stop sound until ENTER hit. */
        err = Pa_StopStream( stream );
        if( err != paNoError ) goto error;
        err = Pa_CloseStream( stream );
        if( err != paNoError ) goto error;
    }
    printf("A good setting for latency would be somewhat higher than\n");
    printf("the minimum latency that worked.\n");
    printf("PortAudio: Test finished.\n");
    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;
}

//-----------------------------------------------------------------------------
// Name: initialize_audio()
// Desc: Initializes PortAudio With Globals
//-----------------------------------------------------------------------------
void initialize_audio(const char* inFile) 
{
    PaStreamParameters outputParameters;
    PaError err;

    /* Open the audio file */
    if (( data.inFile = sf_open( inFile, SFM_READ, &data.sfinfo1 )) == NULL ) 
    {
        printf("Error, Couldn't Open The File\n");
        exit (1);
    }

    /* Check for Compatibility */
    if (data.sfinfo1.channels > 2)
    {
    	printf("Error, File Must be Stereo or Mono\n");
        exit (1);
    }

    /* Print info about audio file */
    printf("\nAudio File: %s\nFrames: %d\nSamples: %d\nChannels: %d\nSampleRate: %d\n",
            inFile, (int)data.sfinfo1.frames, (int)data.sfinfo1.frames * (int)data.sfinfo1.channels,
            (int)data.sfinfo1.channels, (int)data.sfinfo1.samplerate);

    /* Initialize PortAudio */
    Pa_Initialize();

    /* Set output stream parameters */
    outputParameters.device = Pa_GetDefaultOutputDevice();
    outputParameters.channelCount = data.sfinfo1.channels;
    outputParameters.sampleFormat = paFloat32;
    outputParameters.suggestedLatency = 
        Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
    outputParameters.hostApiSpecificStreamInfo = NULL;

    /* Initialize SRC */
    if ((data.src_state = src_new (data.src_converter_type, data.sfinfo1.channels, &data.src_error )) == NULL) 
    {   
        printf ("Error, SRC Initialization Failed\n");
        exit (1);
    }

    /* Sets Up The SRC_DATA Struct */
    initialize_SRC_DATA();

    /* Sets Up Filters */
    initialize_Filters();

    /* Set Initial Amplitude */
    data.amplitude = INITIAL_VOLUME;

    /* Open audio stream */
    err = Pa_OpenStream( &g_stream,
            NULL,
            &outputParameters,
            data.sfinfo1.samplerate, 
            FRAMES_PER_BUFFER, 
            paNoFlag, 
            paCallback, 
            &data );

    if (err != paNoError) {
        printf("PortAudio error: open stream: %s\n", Pa_GetErrorText(err));
    }

    /* Start audio stream */
    err = Pa_StartStream( g_stream );
    if (err != paNoError) {
        printf(  "PortAudio error: start stream: %s\n", Pa_GetErrorText(err));
    }

}

int main(void)
{
    PaStreamParameters inputParameters, outputParameters;
    PaStream *stream = NULL;
    PaError err;
    char *sampleBlock;
    int i;
    int numBytes;
    
    
    printf("patest_read_write_wire.c\n"); fflush(stdout);

    numBytes = FRAMES_PER_BUFFER * NUM_CHANNELS * SAMPLE_SIZE ;
    sampleBlock = (char *) malloc( numBytes );
    if( sampleBlock == NULL )
    {
        printf("Could not allocate record array.\n");
        exit(1);
    }
    CLEAR( sampleBlock );

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

    inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
    printf( "Input device # %d.\n", inputParameters.device );
    printf( "Input LL: %g s\n", Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency );
    printf( "Input HL: %g s\n", Pa_GetDeviceInfo( inputParameters.device )->defaultHighInputLatency );
    inputParameters.channelCount = NUM_CHANNELS;
    inputParameters.sampleFormat = PA_SAMPLE_TYPE;
    inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultHighInputLatency ;
    inputParameters.hostApiSpecificStreamInfo = NULL;

    outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
    printf( "Output device # %d.\n", outputParameters.device );
    printf( "Output LL: %g s\n", Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency );
    printf( "Output HL: %g s\n", Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency );
    outputParameters.channelCount = NUM_CHANNELS;
    outputParameters.sampleFormat = PA_SAMPLE_TYPE;
    outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency;
    outputParameters.hostApiSpecificStreamInfo = NULL;

    /* -- setup -- */

   err = Pa_OpenStream(
              &stream,
              &inputParameters,
              &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;

    err = Pa_StartStream( stream );
    if( err != paNoError ) goto error;
    printf("Wire on. Will run %d seconds.\n", NUM_SECONDS); fflush(stdout);

    for( i=0; i<(NUM_SECONDS*SAMPLE_RATE)/FRAMES_PER_BUFFER; ++i )
    {
       err = Pa_WriteStream( stream, sampleBlock, FRAMES_PER_BUFFER );
       if( err && CHECK_UNDERFLOW ) goto xrun;
       err = Pa_ReadStream( stream, sampleBlock, FRAMES_PER_BUFFER );
       if( err && CHECK_OVERFLOW ) goto xrun;
    }
    err = Pa_StopStream( stream );
    if( err != paNoError ) goto error;

    CLEAR( sampleBlock );
/*
    err = Pa_StartStream( stream );
    if( err != paNoError ) goto error;
    printf("Wire on. Interrupt to stop.\n"); fflush(stdout);

    while( 1 )
    {
       err = Pa_WriteStream( stream, sampleBlock, FRAMES_PER_BUFFER );
       if( err ) goto xrun;
       err = Pa_ReadStream( stream, sampleBlock, FRAMES_PER_BUFFER );
       if( err ) goto xrun;
    }
    err = Pa_StopStream( stream );
    if( err != paNoError ) goto error;

    Pa_CloseStream( stream );
*/
    free( sampleBlock );

    Pa_Terminate();
    return 0;

xrun:
    if( stream ) {
       Pa_AbortStream( stream );
       Pa_CloseStream( stream );
    }
    free( sampleBlock );
    Pa_Terminate();
    if( err & paInputOverflow )
//.........这里部分代码省略.........

int main(void)
{
    PortAudioStream *stream;
    PaError err;
    paTestData DATA;
    int i;
    int totalSamps;
    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 = 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 */
              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,            /* frames per buffer */
              NUM_BUFFERS,              /* 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;
    
    DATA.outTime = -1.0; // mark time for callback as undefined
    err = Pa_StartStream( stream );
    if( err != paNoError ) goto error;
    
    /* Watch until sound is halfway finished. */
    printf("Play for %d seconds.\n", NUM_SECONDS/2 ); fflush(stdout);
    do
    {
        ReportStreamTime( stream, &DATA );
        Pa_Sleep(100);
    } while( Pa_StreamTime( stream ) < (totalSamps/2) );
    
    /* Stop sound until ENTER hit. */
    err = Pa_StopStream( stream );
    if( err != paNoError ) goto error;
    printf("Pause for 2 seconds.\n"); fflush(stdout);
    Pa_Sleep( 2000 );

    DATA.outTime = -1.0; // mark time for callback as undefined
    err = Pa_StartStream( stream );
    if( err != paNoError ) goto error;
    
    printf("Play until sound is finished.\n"); fflush(stdout);
    do
    {
        ReportStreamTime( stream, &DATA );
        Pa_Sleep(100);
    } while( Pa_StreamActive( stream ) );
    
    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)
{
  PaStreamParameters  inputParameters,
                      outputParameters;
  PaStream*           stream;
  PaError             err = paNoError;
  paTestData          data;
  int                 totalFrames;
  int                 numSamples;
  int                 numBytes;
  SAMPLE              max, val;
  double              average;
	struct sockaddr_in myaddr, remaddr;
	int fd, i, slen=sizeof(remaddr);
	char buf[BUFLEN];	/* message buffer */
	int recvlen;		/* # bytes in acknowledgement message */
	char *server = "127.0.0.1";	/* change this to use a different server */

	/* create a socket */

	if ((fd=socket(AF_INET, SOCK_DGRAM, 0))==-1)
		printf("socket created\n");

	/* bind it to all local addresses and pick any port number */

	memset((char *)&myaddr, 0, sizeof(myaddr));
	myaddr.sin_family = AF_INET;
	myaddr.sin_addr.s_addr = htonl(INADDR_ANY);
	myaddr.sin_port = htons(0);

	if (bind(fd, (struct sockaddr *)&myaddr, sizeof(myaddr)) < 0) {
		perror("bind failed");
		return 0;
	}       

	/* now define remaddr, the address to whom we want to send messages */
	/* For convenience, the host address is expressed as a numeric IP address */
	/* that we will convert to a binary format via inet_aton */

	memset((char *) &remaddr, 0, sizeof(remaddr));
	remaddr.sin_family = AF_INET;
	remaddr.sin_port = htons(SERVICE_PORT);
	if (inet_aton(server, &remaddr.sin_addr)==0) {
		fprintf(stderr, "inet_aton() failed\n");
		exit(1);
	}

  data.fd = fd;
  data.remaddr = (struct sockaddr *)  &remaddr;
  data.slen = slen;

  err = Pa_Initialize();
  if( err != paNoError ) exit(1);

  inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
  if (inputParameters.device == paNoDevice) {
      fprintf(stderr,"Error: No default input device.\n");
      exit(1);
  }
  inputParameters.channelCount = 2;                    /* stereo input */
  inputParameters.sampleFormat = PA_SAMPLE_TYPE;
  inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency;
  inputParameters.hostApiSpecificStreamInfo = NULL;

  /* Record some audio. -------------------------------------------- */
  err = Pa_OpenStream(
            &stream,
            &inputParameters,
            NULL,                  /* &outputParameters, */
            SAMPLE_RATE,
            FRAMES_PER_BUFFER,
            paClipOff,      /* we won't output out of range samples so don't bother clipping them */
            sendCallback,
            &data );
  if( err != paNoError ) exit(1);

  err = Pa_StartStream( stream );
  if( err != paNoError ) exit(1);
  printf("\n=== Now listenning!! Please speak into the microphone. ===\n"); fflush(stdout);

  while( ( err = Pa_IsStreamActive( stream ) ) == 1 )
  {
    Pa_Sleep(1000);
    printf("index = \n"); fflush(stdout);
  }
  if( err < 0 ) exit(1);

  err = Pa_CloseStream( stream );
  if( err != paNoError ) exit(1);
	/* now let's send the messages */

	//close(fd);
	return 0;
}

int main(void)
{
    PaStreamParameters inputParameters, outputParameters;
    PaStream *stream;
    PaError err;
    SAMPLE *recordedSamples;
    int i;
    int totalFrames;
    int numSamples;
    int numBytes;
    SAMPLE max, average, val;


    printf("patest_read_record.c\n");
    fflush(stdout);

    totalFrames = NUM_SECONDS * SAMPLE_RATE; /* Record for a few seconds. */
    numSamples = totalFrames * NUM_CHANNELS;

    numBytes = numSamples * sizeof(SAMPLE);
    recordedSamples = (SAMPLE *) malloc( numBytes );
    if( recordedSamples == NULL )
    {
        printf("Could not allocate record array.\n");
        exit(1);
    }
    for( i=0; i<numSamples; i++ ) recordedSamples[i] = 0;

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

    inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
    inputParameters.channelCount = NUM_CHANNELS;
    inputParameters.sampleFormat = PA_SAMPLE_TYPE;
    inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency;
    inputParameters.hostApiSpecificStreamInfo = NULL;

    /* Record some audio. -------------------------------------------- */
    err = Pa_OpenStream(
              &stream,
              &inputParameters,
              NULL,                  /* &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;

    err = Pa_StartStream( stream );
    if( err != paNoError ) goto error;
    printf("Now recording!!\n");
    fflush(stdout);

    err = Pa_ReadStream( stream, recordedSamples, totalFrames );
    if( err != paNoError ) goto error;

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

    /* Measure maximum peak amplitude. */
    max = 0;
    average = 0;
    for( i=0; i<numSamples; i++ )
    {
        val = recordedSamples[i];
        if( val < 0 ) val = -val; /* ABS */
        if( val > max )
        {
            max = val;
        }
        average += val;
    }

    average = average / numSamples;

    printf("Sample max amplitude = "PRINTF_S_FORMAT"\n", max );
    printf("Sample average = "PRINTF_S_FORMAT"\n", average );
    /*  Was as below. Better choose at compile time because this
        keeps generating compiler-warnings:
        if( PA_SAMPLE_TYPE == paFloat32 )
        {
            printf("sample max amplitude = %f\n", max );
            printf("sample average = %f\n", average );
        }
        else
        {
            printf("sample max amplitude = %d\n", max );
            printf("sample average = %d\n", average );
        }
    */
    /* Write recorded data to a file. */
#if 0
    {
        FILE  *fid;
        fid = fopen("recorded.raw", "wb");
        if( fid == NULL )
        {
            printf("Could not open file.");
        }
//.........这里部分代码省略.........

int main(void)
{
    PaStream *stream;
    PaStreamParameters outputParameters;
    PaError err;
    paTestData data;
    int i;
    printf("Play different tone sine waves that alternate between left and right channel.\n");
    printf("The low tone should be on the left channel.\n");
    
    /* 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 = 0;
    data.currentBalance = 0.0;
    data.targetBalance = 0.0;

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

    outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
    if (outputParameters.device == paNoDevice) {
      fprintf(stderr,"Error: No default output device.\n");
      goto error;
    }
    outputParameters.channelCount = 2;       /* stereo output */
    outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */
    outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
    outputParameters.hostApiSpecificStreamInfo = NULL;

    err = Pa_OpenStream( &stream,
                         NULL,                  /* No input. */
                         &outputParameters,     /* As above. */
                         SAMPLE_RATE,
                         FRAMES_PER_BUFFER,
                         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("Play for several seconds.\n");
    for( i=0; i<4; i++ )
    {
		printf("Hear low sound on left side.\n");
		data.targetBalance = 0.01;
        Pa_Sleep( 1000 );
		
		printf("Hear high sound on right side.\n");
		data.targetBalance = 0.99;
        Pa_Sleep( 1000 ); 
    }

    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)
{
    PaStreamParameters outputParameters;
    PaStream *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 = 0;
    
    err = Pa_Initialize();
    if( err != paNoError ) goto error;

    outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
    if (outputParameters.device == paNoDevice) {
      fprintf(stderr,"Error: No default output device.\n");
      goto error;
    }
    outputParameters.channelCount = 2;       /* stereo output */
    outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */
    outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
    outputParameters.hostApiSpecificStreamInfo = NULL;

    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 */
              patestCallback,
              &data );
    if( err != paNoError ) goto error;

    sprintf( data.message, "No Message" );
    err = Pa_SetStreamFinishedCallback( stream, &StreamFinished );
    if( err != paNoError ) goto error;

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

    printf("Play for %d seconds.\n", NUM_SECONDS );
    Pa_Sleep( NUM_SECONDS * 1000 );

    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(int argc, char* argv[])
{
    PaStreamParameters outputParameters;
    PaWinMmeStreamInfo wmmeStreamInfo;
    PaStream *stream;
    PaError err;
    paTestData data;
    int deviceIndex;
    FILE *fp;
    const char *fileName = "c:\\test_48k.ac3.spdif";
    data.buffer = NULL;

    printf("usage: patest_wmme_ac3 fileName [paDeviceIndex]\n");
    printf("**IMPORTANT*** The provided file must include the spdif preamble at the start of every AC-3 frame. Using a normal ac3 file won't work.\n");
    printf("PortAudio Test: output a raw spdif ac3 stream. SR = %d, BufSize = %d, Chans = %d\n", 
            SAMPLE_RATE, FRAMES_PER_BUFFER, CHANNEL_COUNT);

        
    if( argc >= 2 )
        fileName = argv[1];

    printf( "reading spdif ac3 raw stream file %s\n", fileName );

    fp = fopen( fileName, "rb" );
    if( !fp ){
        fprintf( stderr, "error opening spdif ac3 file.\n" );
        return -1;
    }
    /* get file size */
    fseek( fp, 0, SEEK_END );
    data.bufferSampleCount = ftell( fp ) / sizeof(short);
    fseek( fp, 0, SEEK_SET );

    /* allocate buffer, read the whole file into memory */
    data.buffer = (short*)malloc( data.bufferSampleCount * sizeof(short) );
    if( !data.buffer ){
        fprintf( stderr, "error allocating buffer.\n" );
        return -1;
    }

    fread( data.buffer, sizeof(short), data.bufferSampleCount, fp );
    fclose( fp );

    data.playbackIndex = 0;

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

	deviceIndex = Pa_GetHostApiInfo( Pa_HostApiTypeIdToHostApiIndex( paMME ) )->defaultOutputDevice;
	if( argc >= 3 ){
		sscanf( argv[1], "%d", &deviceIndex );
	}

	printf( "using device id %d (%s)\n", deviceIndex, Pa_GetDeviceInfo(deviceIndex)->name );

    
    outputParameters.device = deviceIndex;
    outputParameters.channelCount = CHANNEL_COUNT;
    outputParameters.sampleFormat = paInt16; /* IMPORTANT must use paInt16 for WMME AC3 */
    outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
    outputParameters.hostApiSpecificStreamInfo = NULL;

    wmmeStreamInfo.size = sizeof(PaWinMmeStreamInfo);
    wmmeStreamInfo.hostApiType = paMME; 
    wmmeStreamInfo.version = 1;
    wmmeStreamInfo.flags = paWinMmeWaveFormatDolbyAc3Spdif;
    outputParameters.hostApiSpecificStreamInfo = &wmmeStreamInfo;


	if( Pa_IsFormatSupported( 0, &outputParameters, SAMPLE_RATE ) == paFormatIsSupported  ){
		printf( "Pa_IsFormatSupported reports device will support %d channels.\n", CHANNEL_COUNT );
	}else{
		printf( "Pa_IsFormatSupported reports device will not support %d channels.\n", CHANNEL_COUNT );
	}

    err = Pa_OpenStream(
              &stream,
              NULL, /* no input */
              &outputParameters,
              SAMPLE_RATE,
              FRAMES_PER_BUFFER,
              0,
              patestCallback,
              &data );
    if( err != paNoError ) goto error;

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

    printf("Play for %d seconds.\n", NUM_SECONDS );
    Pa_Sleep( NUM_SECONDS * 1000 );

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

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

    Pa_Terminate();
    free( data.buffer );
//.........这里部分代码省略.........

//.........这里部分代码省略.........
            glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
            glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
            
            unsigned char* textureTmp = new unsigned char[waterfallSize * b.getWidth()];
            
            glTexImage2D( GL_TEXTURE_2D_ARRAY, 0, GL_R8, b.getWidth(), waterfallSize, 0, GL_RED, GL_UNSIGNED_BYTE, textureTmp);
            
            delete textureTmp;
            
            float max = 0;
            for (unsigned int i = 0; i < k.mB; ++i) {
                    drawArray[2 * i + 0] = (float)i / k.mB * 2.0f - 1.0f;
                    float tmp = std::abs(out[i]);
                    drawArray[2 * i + 1] = tmp;
                    max = std::max(tmp, max);

                }
            
            font = new Font(512, "res/font/DroidSans.woff", 32, tm);
            print = new Print(font);
            //print.set(&font, "res/shader/fontVertex.c", "res/shader/fontFragment.c");
            print->setScreenSize(screen);
            glm::vec2* vert = new glm::vec2[1024];
            
            glm::vec2* debug = new glm::vec2[b.getWidth()];
            for (unsigned int i = 0; i < b.getWidth(); ++i) {
                debug[i].x = (float)i / b.getWidth() * 2.0f - 1.0f;
            }
            uint32_t vao;
            glGenVertexArrays(1, &vao);
            glBindVertexArray(vao);
            uint32_t vbo[2];
            glGenBuffers(1, vbo);
            glBindBuffer(GL_ARRAY_BUFFER, vbo[0]);
            glEnableVertexAttribArray(0);
            glBufferData(GL_ARRAY_BUFFER, k.mB * sizeof(glm::vec2), drawArray, GL_DYNAMIC_DRAW);
            glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
            glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
            glEnable(GL_BLEND);
            glfwSetWindowUserPointer(window, this);
            glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
            
            double time, timeo;
            glfwSwapInterval(1);
            PaStream* stream;
            PaStreamParameters params;
            params.device = 21;
            params.channelCount = 1;
            params.sampleFormat = paFloat32;
            params.hostApiSpecificStreamInfo = nullptr;
            params.suggestedLatency = 0.5;
            
            
            err =  Pa_OpenStream(&stream, &params, nullptr, sampleRate, paFramesPerBufferUnspecified, 0, paCallback, this);
            if (err != paNoError)
                printf("error %i", err);
            Pa_StartStream(stream);
            while(!glfwWindowShouldClose(window))
            {
                timeo = time;
                time = glfwGetTime();
                CQT::transform(mAudioData, out, b, mAudioLength);
            
            
                max = 0.0f;
                for (unsigned int i = 0; i < k.mB; ++i) {
                    drawArray[2 * i + 0] = (float)i / k.mB * 2.0f - 1.0f;
                    float tmp = std::abs(out[i]);
                    drawArray[2 * i + 1] = tmp;
                    max = std::max(tmp, max);

                }
                for (unsigned int i = 0; i < k.mB; ++i) {
                    drawArray[2 * i + 1] = std::log(drawArray[2 * i +1]) * mScale + mOffset;
                }
                //printf("%f\n", drawArray[1]);
                glBindVertexArray(vao);
                glBindBuffer(GL_ARRAY_BUFFER, vbo[0]);
                glBufferData(GL_ARRAY_BUFFER, k.mB * sizeof(glm::vec2), drawArray, GL_DYNAMIC_DRAW);
                p->use();
                glDrawArrays(GL_LINE_STRIP, 0, k.mB);
                for (unsigned int i = 0; i < b.getWidth(); ++i) {
                    debug[i].y = mAudioData[i] / 15.0;
                }
                glBufferData(GL_ARRAY_BUFFER, b.getWidth() * sizeof(glm::vec2), debug, GL_DYNAMIC_DRAW);
                glDrawArrays(GL_LINE_STRIP, 0, b.getWidth());
               print->printfAt(-300.0f, 100.0f, 16.0f, 16.0f, u8"Fps:%03.3f", 1/(time-timeo));
                
                glfwSwapBuffers(window);
                glClear(GL_COLOR_BUFFER_BIT);
                glfwPollEvents();
                
            }
            Pa_StopStream(stream);
            Pa_CloseStream(stream);
            Pa_Terminate();

            std::cout << "Hello World. I'm Peach." << std::endl;

        }

int main(void)
{
	int                 i;
    PaStream*           stream;
    PaStreamParameters  outputParameters;
    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 */
    for( i=0; i<TABLE_SIZE; i++ )
    {
        data.sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
    }
    data.sine[TABLE_SIZE] = data.sine[0]; /* set guard point */

    err = Pa_Initialize();
    if( err != paNoError )
        goto error;
    outputParameters.device                    = Pa_GetDefaultOutputDevice(); /* Default output device. */
    if (outputParameters.device == paNoDevice) {
      fprintf(stderr,"Error: No default output device.\n");
      goto error;
    }
    outputParameters.channelCount              = 2;                           /* Stereo output. */
    outputParameters.sampleFormat              = paFloat32;                   /* 32 bit floating point output. */
    outputParameters.hostApiSpecificStreamInfo = NULL;
    outputParameters.suggestedLatency          = Pa_GetDeviceInfo(outputParameters.device)
                                                 ->defaultHighOutputLatency;
    err = Pa_OpenStream(&stream,
                        NULL,               /* no input */
                        &outputParameters,
                        SAMPLE_RATE,
                        FRAMES_PER_BUFFER,
                        paClipOff,          /* No out of range samples should occur. */
                        patestCallback,
                        &data);
    if( err != paNoError )
        goto error;

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

    /* Play an increasing number of sine waves until we hit MAX_USAGE */
    do  {
        data.numSines++;
        Pa_Sleep(200);
        load = Pa_GetStreamCpuLoad(stream);
        printf("numSines = %d, CPU load = %f\n", data.numSines, load );
        fflush(stdout);
        } while((load < MAX_USAGE) && (data.numSines < MAX_SINES));

    Pa_Sleep(2000);     /* Stay for 2 seconds around 80% CPU. */

    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(int argc, char* argv[]){
    char* host = "127.0.0.1";
    if (argc != 2){
        std::cerr << "Usage: client <host>" << std::endl;
        return 1;
    }else{
        host = argv[1];
    }
    PaStreamParameters outputParameters;
    PaStream *stream;
    PaError err;
    sAudioBuffer* audiobuf;
    audiobuf = new sAudioBuffer();
    audiobuf->dec = opus_decoder_create(SAMPLE_RATE, 2, &audiobuf->error);
    if(audiobuf->error != OPUS_OK){
        std::cerr << "opus: could not create decoder" << std::endl;
        return 2;
    }

    printf("SR = %d, BufSize = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER);


    audiobuf->readerIndex = 0;

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

    outputParameters.device = Pa_GetDefaultOutputDevice();
    if (outputParameters.device == paNoDevice){
        fprintf(stderr,"Error: No default output device.\n");
        goto error;
    }
    outputParameters.channelCount = 2;
    outputParameters.sampleFormat = paFloat32;
    outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
    outputParameters.hostApiSpecificStreamInfo = NULL;

    err = Pa_OpenStream(
            &stream,
            NULL,
            &outputParameters,
            SAMPLE_RATE,
            FRAMES_PER_BUFFER,
            paClipOff,
            audioCallback,
            audiobuf);
    if( err != paNoError ) goto error;


    err = Pa_SetStreamFinishedCallback( stream, &StreamFinished );
    if( err != paNoError ) goto error;

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



    try{
        serveClient(host, audiobuf);
    }catch (std::exception& e){
        std::cerr << e.what() << std::endl;
    }


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

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

    Pa_Terminate();

    delete audiobuf;
    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;
}