本文整理汇总了C++中Pa_OpenStream函数的典型用法代码示例。如果您正苦于以下问题：C++ Pa_OpenStream函数的具体用法？C++ Pa_OpenStream怎么用？C++ Pa_OpenStream使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了Pa_OpenStream函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: main
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;
}
开发者ID:Kirushanr，项目名称:audacity，代码行数:96，代码来源:debug_srate.c
示例2: TestAdvance
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;
}
开发者ID:svn2github，项目名称:PortAudio，代码行数:98，代码来源:paqa_devs.c
示例3: main
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.........
开发者ID:Jaroslav23，项目名称:sipxtapi，代码行数:101，代码来源:patest_out_underflow.c
示例4: main
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;
}
开发者ID:Affix，项目名称:fgcom，代码行数:97，代码来源:pa_minlat.c
示例5: initialize_audio
//-----------------------------------------------------------------------------
// 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));
}
}
开发者ID:bombsandbottles，项目名称:VinylVisualizer，代码行数:76，代码来源:vinylVisualizer.c
示例6: main
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.........
开发者ID:AGuismo，项目名称:V-and-Co-Babel，代码行数:101，代码来源:paex_read_write_wire.c
示例7: main
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;
}
开发者ID:svn2github，项目名称:PortAudio，代码行数:76，代码来源:patest_sine_time.c
示例8: main
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;
}
开发者ID:Stefandasbach，项目名称:cHat，代码行数:94，代码来源:udp-send.c
示例9: main
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.........
开发者ID:rmurray1，项目名称:VimProject，代码行数:101，代码来源:patest_read_record.c
示例10: main
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;
}
开发者ID:svn2github，项目名称:PortAudio，代码行数:71，代码来源:patest_leftright.c
示例11: main
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;
}
开发者ID:Dagarman，项目名称:mame，代码行数:68，代码来源:paex_sine.c
示例12: main
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.........
开发者ID:Ashura-X，项目名称:mame，代码行数:101，代码来源:paex_wmme_ac3.c
示例13: Main
//.........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, ¶ms, 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;
}
开发者ID:calceusHD，项目名称:cqtTest，代码行数:101，代码来源:main.cpp
示例14: main
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 )
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