cannam@140: /** @file paex_read_write_wire.c
cannam@140: 	@ingroup examples_src
cannam@140: 	@brief Tests full duplex blocking I/O by passing input straight to output.
cannam@140: 	@author Bjorn Roche. XO Audio LLC for Z-Systems Engineering.
cannam@140:     @author based on code by: Phil Burk  http://www.softsynth.com
cannam@140:     @author based on code by: Ross Bencina rossb@audiomulch.com
cannam@140: */
cannam@140: /*
cannam@140:  * $Id: patest_read_record.c 757 2004-02-13 07:48:10Z rossbencina $
cannam@140:  *
cannam@140:  * This program uses the PortAudio Portable Audio Library.
cannam@140:  * For more information see: http://www.portaudio.com
cannam@140:  * Copyright (c) 1999-2000 Ross Bencina and Phil Burk
cannam@140:  *
cannam@140:  * Permission is hereby granted, free of charge, to any person obtaining
cannam@140:  * a copy of this software and associated documentation files
cannam@140:  * (the "Software"), to deal in the Software without restriction,
cannam@140:  * including without limitation the rights to use, copy, modify, merge,
cannam@140:  * publish, distribute, sublicense, and/or sell copies of the Software,
cannam@140:  * and to permit persons to whom the Software is furnished to do so,
cannam@140:  * subject to the following conditions:
cannam@140:  *
cannam@140:  * The above copyright notice and this permission notice shall be
cannam@140:  * included in all copies or substantial portions of the Software.
cannam@140:  *
cannam@140:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
cannam@140:  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
cannam@140:  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
cannam@140:  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
cannam@140:  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
cannam@140:  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
cannam@140:  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
cannam@140:  */
cannam@140: 
cannam@140: /*
cannam@140:  * The text above constitutes the entire PortAudio license; however,
cannam@140:  * the PortAudio community also makes the following non-binding requests:
cannam@140:  *
cannam@140:  * Any person wishing to distribute modifications to the Software is
cannam@140:  * requested to send the modifications to the original developer so that
cannam@140:  * they can be incorporated into the canonical version. It is also
cannam@140:  * requested that these non-binding requests be included along with the
cannam@140:  * license above.
cannam@140:  */
cannam@140: 
cannam@140: #include <stdio.h>
cannam@140: #include <stdlib.h>
cannam@140: #include <string.h>
cannam@140: #include "portaudio.h"
cannam@140: 
cannam@140: /* #define SAMPLE_RATE  (17932) // Test failure to open with this value. */
cannam@140: #define SAMPLE_RATE       (44100)
cannam@140: #define FRAMES_PER_BUFFER   (512)
cannam@140: #define NUM_SECONDS          (10)
cannam@140: /* #define DITHER_FLAG     (paDitherOff)  */
cannam@140: #define DITHER_FLAG           (0)
cannam@140: 
cannam@140: /* Select sample format. */
cannam@140: #if 1
cannam@140: #define PA_SAMPLE_TYPE  paFloat32
cannam@140: #define SAMPLE_SIZE (4)
cannam@140: #define SAMPLE_SILENCE  (0.0f)
cannam@140: #define PRINTF_S_FORMAT "%.8f"
cannam@140: #elif 0
cannam@140: #define PA_SAMPLE_TYPE  paInt16
cannam@140: #define SAMPLE_SIZE (2)
cannam@140: #define SAMPLE_SILENCE  (0)
cannam@140: #define PRINTF_S_FORMAT "%d"
cannam@140: #elif 0
cannam@140: #define PA_SAMPLE_TYPE  paInt24
cannam@140: #define SAMPLE_SIZE (3)
cannam@140: #define SAMPLE_SILENCE  (0)
cannam@140: #define PRINTF_S_FORMAT "%d"
cannam@140: #elif 0
cannam@140: #define PA_SAMPLE_TYPE  paInt8
cannam@140: #define SAMPLE_SIZE (1)
cannam@140: #define SAMPLE_SILENCE  (0)
cannam@140: #define PRINTF_S_FORMAT "%d"
cannam@140: #else
cannam@140: #define PA_SAMPLE_TYPE  paUInt8
cannam@140: #define SAMPLE_SIZE (1)
cannam@140: #define SAMPLE_SILENCE  (128)
cannam@140: #define PRINTF_S_FORMAT "%d"
cannam@140: #endif
cannam@140: 
cannam@140: /*******************************************************************/
cannam@140: int main(void);
cannam@140: int main(void)
cannam@140: {
cannam@140:     PaStreamParameters inputParameters, outputParameters;
cannam@140:     PaStream *stream = NULL;
cannam@140:     PaError err;
cannam@140:     const PaDeviceInfo* inputInfo;
cannam@140:     const PaDeviceInfo* outputInfo;
cannam@140:     char *sampleBlock = NULL;
cannam@140:     int i;
cannam@140:     int numBytes;
cannam@140:     int numChannels;
cannam@140: 
cannam@140:     printf("patest_read_write_wire.c\n"); fflush(stdout);
cannam@140:     printf("sizeof(int) = %lu\n", sizeof(int)); fflush(stdout);
cannam@140:     printf("sizeof(long) = %lu\n", sizeof(long)); fflush(stdout);
cannam@140: 
cannam@140:     err = Pa_Initialize();
cannam@140:     if( err != paNoError ) goto error2;
cannam@140: 
cannam@140:     inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
cannam@140:     printf( "Input device # %d.\n", inputParameters.device );
cannam@140:     inputInfo = Pa_GetDeviceInfo( inputParameters.device );
cannam@140:     printf( "    Name: %s\n", inputInfo->name );
cannam@140:     printf( "      LL: %g s\n", inputInfo->defaultLowInputLatency );
cannam@140:     printf( "      HL: %g s\n", inputInfo->defaultHighInputLatency );
cannam@140: 
cannam@140:     outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
cannam@140:     printf( "Output device # %d.\n", outputParameters.device );
cannam@140:     outputInfo = Pa_GetDeviceInfo( outputParameters.device );
cannam@140:     printf( "   Name: %s\n", outputInfo->name );
cannam@140:     printf( "     LL: %g s\n", outputInfo->defaultLowOutputLatency );
cannam@140:     printf( "     HL: %g s\n", outputInfo->defaultHighOutputLatency );
cannam@140: 
cannam@140:     numChannels = inputInfo->maxInputChannels < outputInfo->maxOutputChannels
cannam@140:             ? inputInfo->maxInputChannels : outputInfo->maxOutputChannels;
cannam@140:     printf( "Num channels = %d.\n", numChannels );
cannam@140: 
cannam@140:     inputParameters.channelCount = numChannels;
cannam@140:     inputParameters.sampleFormat = PA_SAMPLE_TYPE;
cannam@140:     inputParameters.suggestedLatency = inputInfo->defaultHighInputLatency ;
cannam@140:     inputParameters.hostApiSpecificStreamInfo = NULL;
cannam@140: 
cannam@140:     outputParameters.channelCount = numChannels;
cannam@140:     outputParameters.sampleFormat = PA_SAMPLE_TYPE;
cannam@140:     outputParameters.suggestedLatency = outputInfo->defaultHighOutputLatency;
cannam@140:     outputParameters.hostApiSpecificStreamInfo = NULL;
cannam@140: 
cannam@140:     /* -- setup -- */
cannam@140: 
cannam@140:     err = Pa_OpenStream(
cannam@140:               &stream,
cannam@140:               &inputParameters,
cannam@140:               &outputParameters,
cannam@140:               SAMPLE_RATE,
cannam@140:               FRAMES_PER_BUFFER,
cannam@140:               paClipOff,      /* we won't output out of range samples so don't bother clipping them */
cannam@140:               NULL, /* no callback, use blocking API */
cannam@140:               NULL ); /* no callback, so no callback userData */
cannam@140:     if( err != paNoError ) goto error2;
cannam@140: 
cannam@140:     numBytes = FRAMES_PER_BUFFER * numChannels * SAMPLE_SIZE ;
cannam@140:     sampleBlock = (char *) malloc( numBytes );
cannam@140:     if( sampleBlock == NULL )
cannam@140:     {
cannam@140:         printf("Could not allocate record array.\n");
cannam@140:         goto error1;
cannam@140:     }
cannam@140:     memset( sampleBlock, SAMPLE_SILENCE, numBytes );
cannam@140: 
cannam@140:     err = Pa_StartStream( stream );
cannam@140:     if( err != paNoError ) goto error1;
cannam@140:     printf("Wire on. Will run %d seconds.\n", NUM_SECONDS); fflush(stdout);
cannam@140: 
cannam@140:     for( i=0; i<(NUM_SECONDS*SAMPLE_RATE)/FRAMES_PER_BUFFER; ++i )
cannam@140:     {
cannam@140:         // You may get underruns or overruns if the output is not primed by PortAudio.
cannam@140:         err = Pa_WriteStream( stream, sampleBlock, FRAMES_PER_BUFFER );
cannam@140:         if( err ) goto xrun;
cannam@140:         err = Pa_ReadStream( stream, sampleBlock, FRAMES_PER_BUFFER );
cannam@140:         if( err ) goto xrun;
cannam@140:     }
cannam@140:     printf("Wire off.\n"); fflush(stdout);
cannam@140: 
cannam@140:     err = Pa_StopStream( stream );
cannam@140:     if( err != paNoError ) goto error1;
cannam@140: 
cannam@140:     free( sampleBlock );
cannam@140: 
cannam@140:     Pa_Terminate();
cannam@140:     return 0;
cannam@140: 
cannam@140: xrun:
cannam@140:     printf("err = %d\n", err); fflush(stdout);
cannam@140:     if( stream ) {
cannam@140:        Pa_AbortStream( stream );
cannam@140:        Pa_CloseStream( stream );
cannam@140:     }
cannam@140:     free( sampleBlock );
cannam@140:     Pa_Terminate();
cannam@140:     if( err & paInputOverflow )
cannam@140:        fprintf( stderr, "Input Overflow.\n" );
cannam@140:     if( err & paOutputUnderflow )
cannam@140:        fprintf( stderr, "Output Underflow.\n" );
cannam@140:     return -2;
cannam@140: error1:
cannam@140:     free( sampleBlock );
cannam@140: error2:
cannam@140:     if( stream ) {
cannam@140:        Pa_AbortStream( stream );
cannam@140:        Pa_CloseStream( stream );
cannam@140:     }
cannam@140:     Pa_Terminate();
cannam@140:     fprintf( stderr, "An error occured while using the portaudio stream\n" );
cannam@140:     fprintf( stderr, "Error number: %d\n", err );
cannam@140:     fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
cannam@140:     return -1;
cannam@140: }
cannam@140: