205 lines
7.2 KiB
C
205 lines
7.2 KiB
C
/** @file paex_read_write_wire.c
|
|
@ingroup examples_src
|
|
@brief Tests full duplex blocking I/O by passing input straight to output.
|
|
@author Bjorn Roche. XO Audio LLC for Z-Systems Engineering.
|
|
@author based on code by: Phil Burk http://www.softsynth.com
|
|
@author based on code by: Ross Bencina rossb@audiomulch.com
|
|
*/
|
|
/*
|
|
* $Id: patest_read_record.c 757 2004-02-13 07:48:10Z rossbencina $
|
|
*
|
|
* 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* The text above constitutes the entire PortAudio license; however,
|
|
* the PortAudio community also makes the following non-binding requests:
|
|
*
|
|
* 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. It is also
|
|
* requested that these non-binding requests be included along with the
|
|
* license above.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "portaudio.h"
|
|
|
|
/* #define SAMPLE_RATE (17932) // Test failure to open with this value. */
|
|
#define SAMPLE_RATE (44100)
|
|
#define FRAMES_PER_BUFFER (512)
|
|
#define NUM_SECONDS (10)
|
|
/* #define DITHER_FLAG (paDitherOff) */
|
|
#define DITHER_FLAG (0)
|
|
|
|
/* Select sample format. */
|
|
#if 1
|
|
#define PA_SAMPLE_TYPE paFloat32
|
|
#define SAMPLE_SIZE (4)
|
|
#define SAMPLE_SILENCE (0.0f)
|
|
#define PRINTF_S_FORMAT "%.8f"
|
|
#elif 0
|
|
#define PA_SAMPLE_TYPE paInt16
|
|
#define SAMPLE_SIZE (2)
|
|
#define SAMPLE_SILENCE (0)
|
|
#define PRINTF_S_FORMAT "%d"
|
|
#elif 0
|
|
#define PA_SAMPLE_TYPE paInt24
|
|
#define SAMPLE_SIZE (3)
|
|
#define SAMPLE_SILENCE (0)
|
|
#define PRINTF_S_FORMAT "%d"
|
|
#elif 0
|
|
#define PA_SAMPLE_TYPE paInt8
|
|
#define SAMPLE_SIZE (1)
|
|
#define SAMPLE_SILENCE (0)
|
|
#define PRINTF_S_FORMAT "%d"
|
|
#else
|
|
#define PA_SAMPLE_TYPE paUInt8
|
|
#define SAMPLE_SIZE (1)
|
|
#define SAMPLE_SILENCE (128)
|
|
#define PRINTF_S_FORMAT "%d"
|
|
#endif
|
|
|
|
/*******************************************************************/
|
|
int main(void);
|
|
int main(void)
|
|
{
|
|
PaStreamParameters inputParameters, outputParameters;
|
|
PaStream *stream = NULL;
|
|
PaError err;
|
|
const PaDeviceInfo* inputInfo;
|
|
const PaDeviceInfo* outputInfo;
|
|
char *sampleBlock = NULL;
|
|
int i;
|
|
int numBytes;
|
|
int numChannels;
|
|
|
|
printf("patest_read_write_wire.c\n"); fflush(stdout);
|
|
printf("sizeof(int) = %lu\n", sizeof(int)); fflush(stdout);
|
|
printf("sizeof(long) = %lu\n", sizeof(long)); fflush(stdout);
|
|
|
|
err = Pa_Initialize();
|
|
if( err != paNoError ) goto error2;
|
|
|
|
inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
|
|
printf( "Input device # %d.\n", inputParameters.device );
|
|
inputInfo = Pa_GetDeviceInfo( inputParameters.device );
|
|
printf( " Name: %s\n", inputInfo->name );
|
|
printf( " LL: %g s\n", inputInfo->defaultLowInputLatency );
|
|
printf( " HL: %g s\n", inputInfo->defaultHighInputLatency );
|
|
|
|
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
|
|
printf( "Output device # %d.\n", outputParameters.device );
|
|
outputInfo = Pa_GetDeviceInfo( outputParameters.device );
|
|
printf( " Name: %s\n", outputInfo->name );
|
|
printf( " LL: %g s\n", outputInfo->defaultLowOutputLatency );
|
|
printf( " HL: %g s\n", outputInfo->defaultHighOutputLatency );
|
|
|
|
numChannels = inputInfo->maxInputChannels < outputInfo->maxOutputChannels
|
|
? inputInfo->maxInputChannels : outputInfo->maxOutputChannels;
|
|
printf( "Num channels = %d.\n", numChannels );
|
|
|
|
inputParameters.channelCount = numChannels;
|
|
inputParameters.sampleFormat = PA_SAMPLE_TYPE;
|
|
inputParameters.suggestedLatency = inputInfo->defaultHighInputLatency ;
|
|
inputParameters.hostApiSpecificStreamInfo = NULL;
|
|
|
|
outputParameters.channelCount = numChannels;
|
|
outputParameters.sampleFormat = PA_SAMPLE_TYPE;
|
|
outputParameters.suggestedLatency = outputInfo->defaultHighOutputLatency;
|
|
outputParameters.hostApiSpecificStreamInfo = NULL;
|
|
|
|
/* -- setup -- */
|
|
|
|
err = Pa_OpenStream(
|
|
&stream,
|
|
&inputParameters,
|
|
&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 error2;
|
|
|
|
numBytes = FRAMES_PER_BUFFER * numChannels * SAMPLE_SIZE ;
|
|
sampleBlock = (char *) malloc( numBytes );
|
|
if( sampleBlock == NULL )
|
|
{
|
|
printf("Could not allocate record array.\n");
|
|
goto error1;
|
|
}
|
|
memset( sampleBlock, SAMPLE_SILENCE, numBytes );
|
|
|
|
err = Pa_StartStream( stream );
|
|
if( err != paNoError ) goto error1;
|
|
printf("Wire on. Will run %d seconds.\n", NUM_SECONDS); fflush(stdout);
|
|
|
|
for( i=0; i<(NUM_SECONDS*SAMPLE_RATE)/FRAMES_PER_BUFFER; ++i )
|
|
{
|
|
// You may get underruns or overruns if the output is not primed by PortAudio.
|
|
err = Pa_WriteStream( stream, sampleBlock, FRAMES_PER_BUFFER );
|
|
if( err ) goto xrun;
|
|
err = Pa_ReadStream( stream, sampleBlock, FRAMES_PER_BUFFER );
|
|
if( err ) goto xrun;
|
|
}
|
|
printf("Wire off.\n"); fflush(stdout);
|
|
|
|
err = Pa_StopStream( stream );
|
|
if( err != paNoError ) goto error1;
|
|
|
|
free( sampleBlock );
|
|
|
|
Pa_Terminate();
|
|
return 0;
|
|
|
|
xrun:
|
|
printf("err = %d\n", err); fflush(stdout);
|
|
if( stream ) {
|
|
Pa_AbortStream( stream );
|
|
Pa_CloseStream( stream );
|
|
}
|
|
free( sampleBlock );
|
|
Pa_Terminate();
|
|
if( err & paInputOverflow )
|
|
fprintf( stderr, "Input Overflow.\n" );
|
|
if( err & paOutputUnderflow )
|
|
fprintf( stderr, "Output Underflow.\n" );
|
|
return -2;
|
|
error1:
|
|
free( sampleBlock );
|
|
error2:
|
|
if( stream ) {
|
|
Pa_AbortStream( stream );
|
|
Pa_CloseStream( stream );
|
|
}
|
|
Pa_Terminate();
|
|
fprintf( stderr, "An error occurred while using the portaudio stream\n" );
|
|
fprintf( stderr, "Error number: %d\n", err );
|
|
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
|
|
return -1;
|
|
}
|