patest_sine_formats.c File Reference

Play a sine wave for several seconds. Test various data formats. More...

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

Data Structures
struct	paTestData

Macros
#define	NUM_SECONDS   (10)
#define	SAMPLE_RATE   (44100)
#define	FRAMES_PER_BUFFER   (512)
#define	LEFT_FREQ   (SAMPLE_RATE/256.0) /* So we hit 1.0 */
#define	RIGHT_FREQ   (500.0)
#define	AMPLITUDE   (1.0)
#define	TEST_UINT8   (0)
#define	TEST_INT8   (0)
#define	TEST_INT16   (1)
#define	TEST_FLOAT32   (0)
#define	TEST_FORMAT   paInt16
#define	SAMPLE_ZERO   (0)
#define	DOUBLE_TO_SAMPLE(x)
#define	FORMAT_NAME   "Signed 16 Bit"
#define	M_PI   (3.14159265)

Typedefs
typedef short	SAMPLE_t

Functions
int	main (void)

Detailed Description

Play a sine wave for several seconds. Test various data formats.

Author

Phil Burk

Macro Definition Documentation

AMPLITUDE

#define AMPLITUDE   (1.0)

DOUBLE_TO_SAMPLE

#define DOUBLE_TO_SAMPLE

(

x

)

Value:

(SAMPLE_ZERO + (SAMPLE_t)(32767 * (x)))

FORMAT_NAME

#define FORMAT_NAME   "Signed 16 Bit"

Referenced by main().

FRAMES_PER_BUFFER

#define FRAMES_PER_BUFFER   (512)

Referenced by main().

LEFT_FREQ

#define LEFT_FREQ   (SAMPLE_RATE/256.0) /* So we hit 1.0 */

M_PI

#define M_PI   (3.14159265)

NUM_SECONDS

#define NUM_SECONDS   (10)

Referenced by main().

RIGHT_FREQ

#define RIGHT_FREQ   (500.0)

SAMPLE_RATE

#define SAMPLE_RATE   (44100)

Referenced by main().

SAMPLE_ZERO

#define SAMPLE_ZERO   (0)

TEST_FLOAT32

#define TEST_FLOAT32   (0)

TEST_FORMAT

#define TEST_FORMAT   paInt16

Referenced by main().

TEST_INT16

#define TEST_INT16   (1)

TEST_INT8

#define TEST_INT8   (0)

TEST_UINT8

#define TEST_UINT8   (0)

Typedef Documentation

SAMPLE_t

typedef short SAMPLE_t

Function Documentation

main()

int main

(

void

)

References PaStreamParameters::channelCount, PaDeviceInfo::defaultLowOutputLatency, PaStreamParameters::device, FORMAT_NAME, FRAMES_PER_BUFFER, paTestData::framesToGo, PaStreamParameters::hostApiSpecificStreamInfo, paTestData::left_phase, NUM_SECONDS, Pa_CloseStream(), Pa_GetDefaultOutputDevice(), Pa_GetDeviceInfo(), Pa_GetErrorText(), Pa_Initialize(), Pa_IsStreamActive(), Pa_OpenStream(), Pa_Sleep(), Pa_StartStream(), Pa_Terminate(), paClipOff, paNoError, paTestData::right_phase, SAMPLE_RATE, PaStreamParameters::sampleFormat, PaStreamParameters::suggestedLatency, and TEST_FORMAT.