patest_stop.c File Reference

Test different ways of stopping audio. More...

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

Data Structures
struct	paTestData
Defines
#define	OUTPUT_DEVICE   (Pa_GetDefaultOutputDevice())
#define	SLEEP_DUR   (200)
#define	SAMPLE_RATE   (44100)
#define	FRAMES_PER_BUFFER   (256)
#define	LATENCY_SECONDS   (3.f)
#define	FRAMES_PER_NOTE   (SAMPLE_RATE/2)
#define	MAX_REPEATS   (2)
#define	FUNDAMENTAL   (400.0f / SAMPLE_RATE)
#define	NOTE_0   (FUNDAMENTAL * 1.0f / 1.0f)
#define	NOTE_1   (FUNDAMENTAL * 5.0f / 4.0f)
#define	NOTE_2   (FUNDAMENTAL * 4.0f / 3.0f)
#define	NOTE_3   (FUNDAMENTAL * 3.0f / 2.0f)
#define	NOTE_4   (FUNDAMENTAL * 2.0f / 1.0f)
#define	MODE_FINISH   (0)
#define	MODE_STOP   (1)
#define	MODE_ABORT   (2)
#define	M_PI   (3.14159265)
#define	TABLE_SIZE   (400)
Functions
int	TestStopMode (paTestData *data)
float	LookupWaveform (paTestData *data, float phase)
int	main (void)

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Detailed Description

Test different ways of stopping audio.

Test the three ways of stopping audio:

• calling Pa_StopStream(),
• calling Pa_AbortStream(),
• and returning a 1 from the callback function.

A long latency is set up so that you can hear the difference. Then a simple 8 note sequence is repeated twice. The program will print what you should hear.

Author:

Phil Burk <philburk@softsynth.com>

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Define Documentation

#define FRAMES_PER_BUFFER   (256)

#define FRAMES_PER_NOTE   (SAMPLE_RATE/2)

#define FUNDAMENTAL   (400.0f / SAMPLE_RATE)

#define LATENCY_SECONDS   (3.f)

#define M_PI   (3.14159265)

#define MAX_REPEATS   (2)

#define MODE_ABORT   (2)

#define MODE_FINISH   (0)

#define MODE_STOP   (1)

#define NOTE_0   (FUNDAMENTAL * 1.0f / 1.0f)

#define NOTE_1   (FUNDAMENTAL * 5.0f / 4.0f)

#define NOTE_2   (FUNDAMENTAL * 4.0f / 3.0f)

#define NOTE_3   (FUNDAMENTAL * 3.0f / 2.0f)

#define NOTE_4   (FUNDAMENTAL * 2.0f / 1.0f)

#define OUTPUT_DEVICE   (Pa_GetDefaultOutputDevice())

#define SAMPLE_RATE   (44100)

#define SLEEP_DUR   (200)

#define TABLE_SIZE   (400)

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Function Documentation

float LookupWaveform	(	paTestData *	data,
		float	phase
	)

int main

(

void

)

int TestStopMode

(

paTestData *

data

)

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