mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-09-08 22:36:40 -04:00
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@249 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
203 lines
6.5 KiB
C
203 lines
6.5 KiB
C
/*
|
|
* $Id$
|
|
* patest_sine_formats.c
|
|
* Play a sine wave using the Portable Audio api for several seconds.
|
|
* Test various data formats.
|
|
*
|
|
* Author: Phil Burk
|
|
*
|
|
* This program uses the PortAudio Portable Audio Library.
|
|
* For more information see: http://www.audiomulch.com/portaudio/
|
|
* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files
|
|
* (the "Software"), to deal in the Software without restriction,
|
|
* including without limitation the rights to use, copy, modify, merge,
|
|
* publish, distribute, sublicense, and/or sell copies of the Software,
|
|
* and to permit persons to whom the Software is furnished to do so,
|
|
* subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* Any person wishing to distribute modifications to the Software is
|
|
* requested to send the modifications to the original developer so that
|
|
* they can be incorporated into the canonical version.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
|
|
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
|
|
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
*/
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
#include "portaudio.h"
|
|
|
|
#define NUM_SECONDS (10)
|
|
#define SAMPLE_RATE (44100)
|
|
#define FRAMES_PER_BUFFER (256)
|
|
|
|
#define LEFT_FREQ (SAMPLE_RATE/512.0) /* So we hit 1.0 */
|
|
#define RIGHT_FREQ (500.0)
|
|
|
|
#define AMPLITUDE (1.0)
|
|
|
|
/* Select ONE format for testing. */
|
|
#define TEST_UINT8 (1)
|
|
#define TEST_INT8 (0)
|
|
#define TEST_INT16 (0)
|
|
#define TEST_FLOAT32 (0)
|
|
|
|
#if TEST_UINT8
|
|
#define TEST_FORMAT paUInt8
|
|
typedef unsigned char SAMPLE_t;
|
|
#define SAMPLE_ZERO (0x80)
|
|
#define DOUBLE_TO_SAMPLE(x) (SAMPLE_ZERO + (SAMPLE_t)(127.0 * (x)))
|
|
#define FORMAT_NAME "Unsigned 8 Bit"
|
|
|
|
#elif TEST_INT8
|
|
#define TEST_FORMAT paInt8
|
|
typedef char SAMPLE_t;
|
|
#define SAMPLE_ZERO (0)
|
|
#define DOUBLE_TO_SAMPLE(x) (SAMPLE_ZERO + (SAMPLE_t)(127.0 * (x)))
|
|
#define FORMAT_NAME "Signed 8 Bit"
|
|
|
|
#elif TEST_INT16
|
|
#define TEST_FORMAT paInt16
|
|
typedef short SAMPLE_t;
|
|
#define SAMPLE_ZERO (0)
|
|
#define DOUBLE_TO_SAMPLE(x) (SAMPLE_ZERO + (SAMPLE_t)(32767 * (x)))
|
|
#define FORMAT_NAME "Signed 16 Bit"
|
|
|
|
#elif TEST_FLOAT32
|
|
#define TEST_FORMAT paFloat32
|
|
typedef float SAMPLE_t;
|
|
#define SAMPLE_ZERO (0.0)
|
|
#define DOUBLE_TO_SAMPLE(x) ((SAMPLE_t)(x))
|
|
#define FORMAT_NAME "Float 32 Bit"
|
|
#endif
|
|
|
|
#ifndef M_PI
|
|
#define M_PI (3.14159265)
|
|
#endif
|
|
|
|
|
|
typedef struct
|
|
{
|
|
double left_phase;
|
|
double right_phase;
|
|
unsigned int framesToGo;
|
|
}
|
|
paTestData;
|
|
/* This routine will be called by the PortAudio engine when audio is needed.
|
|
** It may called at interrupt level on some machines so don't do anything
|
|
** that could mess up the system like calling malloc() or free().
|
|
*/
|
|
static int patestCallback( void *inputBuffer, void *outputBuffer,
|
|
unsigned long framesPerBuffer,
|
|
PaTimestamp outTime, void *userData )
|
|
{
|
|
paTestData *data = (paTestData*)userData;
|
|
SAMPLE_t *out = (SAMPLE_t *)outputBuffer;
|
|
SAMPLE_t sample;
|
|
int i;
|
|
int framesToCalc;
|
|
int finished = 0;
|
|
(void) outTime; /* Prevent unused variable warnings. */
|
|
(void) inputBuffer;
|
|
|
|
if( data->framesToGo < framesPerBuffer )
|
|
{
|
|
framesToCalc = data->framesToGo;
|
|
data->framesToGo = 0;
|
|
finished = 1;
|
|
}
|
|
else
|
|
{
|
|
framesToCalc = framesPerBuffer;
|
|
data->framesToGo -= framesPerBuffer;
|
|
}
|
|
|
|
for( i=0; i<framesToCalc; i++ )
|
|
{
|
|
data->left_phase += (LEFT_FREQ / SAMPLE_RATE);
|
|
if( data->left_phase > 1.0) data->left_phase -= 1.0;
|
|
sample = DOUBLE_TO_SAMPLE( AMPLITUDE * sin( (data->left_phase * M_PI * 2. ))); /**/
|
|
*out++ = sample;
|
|
/* *out++ = sample; /**/
|
|
/* *out++ = 0; /**/
|
|
|
|
data->right_phase += (RIGHT_FREQ / SAMPLE_RATE);
|
|
if( data->right_phase > 1.0) data->right_phase -= 1.0;
|
|
*out++ = DOUBLE_TO_SAMPLE( AMPLITUDE * sin( (data->right_phase * M_PI * 2. ))); /**/
|
|
/* *out++ = 0; /* */
|
|
}
|
|
/* zero remainder of final buffer */
|
|
for( ; i<(int)framesPerBuffer; i++ )
|
|
{
|
|
*out++ = SAMPLE_ZERO; /* left */
|
|
*out++ = SAMPLE_ZERO; /* right */
|
|
}
|
|
return finished;
|
|
}
|
|
/*******************************************************************/
|
|
int main(void);
|
|
int main(void)
|
|
{
|
|
PortAudioStream *stream;
|
|
PaError err;
|
|
paTestData data;
|
|
int totalSamps;
|
|
|
|
printf("PortAudio Test: output " FORMAT_NAME "\n");
|
|
|
|
|
|
data.left_phase = data.right_phase = 0.0;
|
|
data.framesToGo = totalSamps = NUM_SECONDS * SAMPLE_RATE; /* Play for a few seconds. */
|
|
err = Pa_Initialize();
|
|
if( err != paNoError ) goto error;
|
|
|
|
err = Pa_OpenStream(
|
|
&stream,
|
|
paNoDevice,/* default input device */
|
|
0, /* no input */
|
|
TEST_FORMAT,
|
|
NULL,
|
|
Pa_GetDefaultOutputDeviceID(), /* default output device */
|
|
2, /* stereo output */
|
|
TEST_FORMAT,
|
|
NULL,
|
|
SAMPLE_RATE,
|
|
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 */
|
|
patestCallback,
|
|
&data );
|
|
if( err != paNoError ) goto error;
|
|
|
|
err = Pa_StartStream( stream );
|
|
if( err != paNoError ) goto error;
|
|
|
|
printf("Waiting %d seconds for sound to finish.\n", NUM_SECONDS );
|
|
while( Pa_StreamActive( stream ) ) Pa_Sleep(10);
|
|
|
|
err = Pa_CloseStream( stream );
|
|
if( err != paNoError ) goto error;
|
|
Pa_Terminate();
|
|
|
|
printf("PortAudio Test Finished: " FORMAT_NAME "\n");
|
|
|
|
return err;
|
|
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 ) );
|
|
return err;
|
|
}
|