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;
}
int main(void)
{
PaError err;
paTestData data;
long totalFrames;
long numBytes;
long i;
printf("patest_record.c\n"); fflush(stdout);
data.frameIndex = 0;
data.samplesPerFrame = 2;
data.maxFrameIndex = totalFrames = NUM_SECONDS*SAMPLE_RATE;
printf("totalFrames = %d\n", totalFrames ); fflush(stdout);
data.numSamples = totalFrames * data.samplesPerFrame;
numBytes = data.numSamples * sizeof(SAMPLE);
data.recordedSamples = (SAMPLE *) malloc( numBytes );
if( data.recordedSamples == NULL )
{
printf("Could not allocate record array.\n");
exit(1);
}
for( i=0; i<data.numSamples; i++ ) data.recordedSamples[i] = 0;
err = Pa_Initialize();
if( err != paNoError ) goto error;
for( i=0; i<2; i++ )
{
err = TestRecording( &data );
if( err != paNoError ) goto error;
err = TestPlayback( &data );
if( err != paNoError ) goto error;
}
free( data.recordedSamples );
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 ) );
if( err == paHostError )
{
fprintf( stderr, "Host Error number: %d\n", Pa_GetHostError() );
}
return -1;
}
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;
}
