patest_in_overflow.c File Reference

Count input overflows (using paInputOverflow flag) under overloaded and normal conditions. This test uses the same method to overload the stream as does patest_out_underflow.c – it generates sine waves until the cpu load exceeds a certain level. However this test is only concerned with input and so doesn't output any sound. More...

#include <stdio.h>
#include <math.h>
#include "portaudio.h"

Data Structures
struct	paTestData

Macros
#define	MAX_SINES   (500)
#define	MAX_LOAD   (1.2)
#define	SAMPLE_RATE   (44100)
#define	FRAMES_PER_BUFFER   (512)
#define	M_PI   (3.14159265)
#define	TWOPI   (M_PI * 2.0)

Typedefs
typedef struct paTestData	paTestData

Functions
int	main (void)

Detailed Description

Count input overflows (using paInputOverflow flag) under overloaded and normal conditions. This test uses the same method to overload the stream as does patest_out_underflow.c – it generates sine waves until the cpu load exceeds a certain level. However this test is only concerned with input and so doesn't output any sound.

Author

Ross Bencina rossb.nosp@m.@aud.nosp@m.iomul.nosp@m.ch.c.nosp@m.om

Phil Burk philb.nosp@m.urk@.nosp@m.softs.nosp@m.ynth.nosp@m..com

Macro Definition Documentation

FRAMES_PER_BUFFER

#define FRAMES_PER_BUFFER   (512)

Referenced by main().

M_PI

#define M_PI   (3.14159265)

MAX_LOAD

#define MAX_LOAD   (1.2)

Referenced by main().

MAX_SINES

#define MAX_SINES   (500)

Referenced by main().

SAMPLE_RATE

#define SAMPLE_RATE   (44100)

Referenced by main().

TWOPI

#define TWOPI   (M_PI * 2.0)

Typedef Documentation

paTestData

typedef struct paTestData paTestData

Function Documentation

main()

int main

(

void

)

References PaStreamParameters::channelCount, paTestData::countOverflows, PaDeviceInfo::defaultLowInputLatency, PaStreamParameters::device, FRAMES_PER_BUFFER, PaStreamParameters::hostApiSpecificStreamInfo, paTestData::inputOverflowCount, MAX_LOAD, MAX_SINES, Pa_CloseStream(), Pa_GetDefaultInputDevice(), Pa_GetDeviceInfo(), Pa_GetErrorText(), Pa_GetStreamCpuLoad(), Pa_Initialize(), Pa_OpenStream(), Pa_Sleep(), Pa_StartStream(), Pa_StopStream(), Pa_Terminate(), paClipOff, paFloat32, paNoDevice, paNoError, SAMPLE_RATE, PaStreamParameters::sampleFormat, paTestData::sineCount, and PaStreamParameters::suggestedLatency.