mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-03 16:01:18 -05:00
39f88b793d
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@249 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
230 lines
7.4 KiB
C
230 lines
7.4 KiB
C
/** @file patest_read_record.c
|
|
@brief Record input into an array; Save array to a file; Playback recorded
|
|
data. Implemented using the blocking API (Pa_ReadStream(), Pa_WriteStream() )
|
|
@author Phil Burk http://www.softsynth.com
|
|
@author Ross Bencina rossb@audiomulch.com
|
|
*/
|
|
/*
|
|
* $Id$
|
|
*
|
|
* This program uses the PortAudio Portable Audio Library.
|
|
* For more information see: http://www.portaudio.com
|
|
* 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 <stdlib.h>
|
|
#include "portaudio.h"
|
|
|
|
/* #define SAMPLE_RATE (17932) // Test failure to open with this value. */
|
|
#define SAMPLE_RATE (44100)
|
|
#define FRAMES_PER_BUFFER (1024)
|
|
#define NUM_SECONDS (5)
|
|
#define NUM_CHANNELS (2)
|
|
/* #define DITHER_FLAG (paDitherOff) */
|
|
#define DITHER_FLAG (0) /**/
|
|
|
|
/* Select sample format. */
|
|
#if 1
|
|
#define PA_SAMPLE_TYPE paFloat32
|
|
typedef float SAMPLE;
|
|
#define SAMPLE_SILENCE (0.0f)
|
|
#define PRINTF_S_FORMAT "%.8f"
|
|
#elif 1
|
|
#define PA_SAMPLE_TYPE paInt16
|
|
typedef short SAMPLE;
|
|
#define SAMPLE_SILENCE (0)
|
|
#define PRINTF_S_FORMAT "%d"
|
|
#elif 0
|
|
#define PA_SAMPLE_TYPE paInt8
|
|
typedef char SAMPLE;
|
|
#define SAMPLE_SILENCE (0)
|
|
#define PRINTF_S_FORMAT "%d"
|
|
#else
|
|
#define PA_SAMPLE_TYPE paUInt8
|
|
typedef unsigned char SAMPLE;
|
|
#define SAMPLE_SILENCE (128)
|
|
#define PRINTF_S_FORMAT "%d"
|
|
#endif
|
|
|
|
|
|
/*******************************************************************/
|
|
int main(void);
|
|
int main(void)
|
|
{
|
|
PaStreamParameters inputParameters, outputParameters;
|
|
PaStream *stream;
|
|
PaError err;
|
|
SAMPLE *recordedSamples;
|
|
int i;
|
|
int totalFrames;
|
|
int numSamples;
|
|
int numBytes;
|
|
SAMPLE max, average, val;
|
|
|
|
|
|
printf("patest_read_record.c\n"); fflush(stdout);
|
|
|
|
totalFrames = NUM_SECONDS * SAMPLE_RATE; /* Record for a few seconds. */
|
|
numSamples = totalFrames * NUM_CHANNELS;
|
|
|
|
numBytes = numSamples * sizeof(SAMPLE);
|
|
recordedSamples = (SAMPLE *) malloc( numBytes );
|
|
if( recordedSamples == NULL )
|
|
{
|
|
printf("Could not allocate record array.\n");
|
|
exit(1);
|
|
}
|
|
for( i=0; i<numSamples; i++ ) recordedSamples[i] = 0;
|
|
|
|
err = Pa_Initialize();
|
|
if( err != paNoError ) goto error;
|
|
|
|
inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
|
|
inputParameters.channelCount = NUM_CHANNELS;
|
|
inputParameters.sampleFormat = PA_SAMPLE_TYPE;
|
|
inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency;
|
|
inputParameters.hostApiSpecificStreamInfo = NULL;
|
|
|
|
/* Record some audio. -------------------------------------------- */
|
|
err = Pa_OpenStream(
|
|
&stream,
|
|
&inputParameters,
|
|
NULL, /* &outputParameters, */
|
|
SAMPLE_RATE,
|
|
FRAMES_PER_BUFFER,
|
|
paClipOff, /* we won't output out of range samples so don't bother clipping them */
|
|
NULL, /* no callback, use blocking API */
|
|
NULL ); /* no callback, so no callback userData */
|
|
if( err != paNoError ) goto error;
|
|
|
|
err = Pa_StartStream( stream );
|
|
if( err != paNoError ) goto error;
|
|
printf("Now recording!!\n"); fflush(stdout);
|
|
|
|
err = Pa_ReadStream( stream, recordedSamples, totalFrames );
|
|
if( err != paNoError ) goto error;
|
|
|
|
err = Pa_CloseStream( stream );
|
|
if( err != paNoError ) goto error;
|
|
|
|
/* Measure maximum peak amplitude. */
|
|
max = 0;
|
|
average = 0;
|
|
for( i=0; i<numSamples; i++ )
|
|
{
|
|
val = recordedSamples[i];
|
|
if( val < 0 ) val = -val; /* ABS */
|
|
if( val > max )
|
|
{
|
|
max = val;
|
|
}
|
|
average += val;
|
|
}
|
|
|
|
average = average / numSamples;
|
|
|
|
printf("Sample max amplitude = "PRINTF_S_FORMAT"\n", max );
|
|
printf("Sample average = "PRINTF_S_FORMAT"\n", average );
|
|
/* Was as below. Better choose at compile time because this
|
|
keeps generating compiler-warnings:
|
|
if( PA_SAMPLE_TYPE == paFloat32 )
|
|
{
|
|
printf("sample max amplitude = %f\n", max );
|
|
printf("sample average = %f\n", average );
|
|
}
|
|
else
|
|
{
|
|
printf("sample max amplitude = %d\n", max );
|
|
printf("sample average = %d\n", average );
|
|
}
|
|
*/
|
|
/* Write recorded data to a file. */
|
|
#if 0
|
|
{
|
|
FILE *fid;
|
|
fid = fopen("recorded.raw", "wb");
|
|
if( fid == NULL )
|
|
{
|
|
printf("Could not open file.");
|
|
}
|
|
else
|
|
{
|
|
fwrite( recordedSamples, NUM_CHANNELS * sizeof(SAMPLE), totalFrames, fid );
|
|
fclose( fid );
|
|
printf("Wrote data to 'recorded.raw'\n");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Playback recorded data. -------------------------------------------- */
|
|
|
|
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
|
|
outputParameters.channelCount = NUM_CHANNELS;
|
|
outputParameters.sampleFormat = PA_SAMPLE_TYPE;
|
|
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
|
|
outputParameters.hostApiSpecificStreamInfo = NULL;
|
|
|
|
printf("Begin playback.\n"); fflush(stdout);
|
|
err = Pa_OpenStream(
|
|
&stream,
|
|
NULL, /* no input */
|
|
&outputParameters,
|
|
SAMPLE_RATE,
|
|
FRAMES_PER_BUFFER,
|
|
paClipOff, /* we won't output out of range samples so don't bother clipping them */
|
|
NULL, /* no callback, use blocking API */
|
|
NULL ); /* no callback, so no callback userData */
|
|
if( err != paNoError ) goto error;
|
|
|
|
if( stream )
|
|
{
|
|
err = Pa_StartStream( stream );
|
|
if( err != paNoError ) goto error;
|
|
printf("Waiting for playback to finish.\n"); fflush(stdout);
|
|
|
|
err = Pa_WriteStream( stream, recordedSamples, totalFrames );
|
|
if( err != paNoError ) goto error;
|
|
|
|
err = Pa_CloseStream( stream );
|
|
if( err != paNoError ) goto error;
|
|
printf("Done.\n"); fflush(stdout);
|
|
}
|
|
free( recordedSamples );
|
|
|
|
Pa_Terminate();
|
|
return 0;
|
|
|
|
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 -1;
|
|
}
|
|
|