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 TABLE_SIZE   (400)

Functions

int TestStopMode (paTestData *data)
float LookupWaveform (paTestData *data, float phase)
int main (void)

Detailed Description

Test different ways of stopping audio.

Test the three ways of stopping audio:

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>

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)

Referenced by main(), and TestStopMode().

#define MAX_REPEATS   (2)

Referenced by TestStopMode().

#define MODE_ABORT   (2)

Referenced by main(), and TestStopMode().

#define MODE_FINISH   (0)

Referenced by main(), and TestStopMode().

#define MODE_STOP   (1)

Referenced by main().

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

Referenced by main().

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

Referenced by main().

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

Referenced by main().

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

Referenced by main().

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

Referenced by main().

#define OUTPUT_DEVICE   (Pa_GetDefaultOutputDevice())
#define SAMPLE_RATE   (44100)
#define SLEEP_DUR   (200)
#define TABLE_SIZE   (400)

Function Documentation

float LookupWaveform ( paTestData data,
float  phase 
)

References TABLE_SIZE, and paTestData::waveform.

int main ( void   ) 
int TestStopMode ( paTestData data  ) 

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