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Diffstat (limited to 'portaudio/pablio/test_rw.c')
| -rw-r--r-- | portaudio/pablio/test_rw.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/portaudio/pablio/test_rw.c b/portaudio/pablio/test_rw.c new file mode 100644 index 0000000..029240d --- /dev/null +++ b/portaudio/pablio/test_rw.c @@ -0,0 +1,105 @@ +/* + * $Id$ + * test_rw.c + * Read input from one stream and write it to another. + * + * Author: Phil Burk, http://www.softsynth.com/portaudio/ + * + * This program uses PABLIO, the Portable Audio Blocking I/O Library. + * PABLIO is built on top of PortAudio, the 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 "pablio.h" + +/* +** Note that many of the older ISA sound cards on PCs do NOT support +** full duplex audio (simultaneous record and playback). +** And some only support full duplex at lower sample rates. +*/ +#define SAMPLE_RATE (44100) +#define NUM_SECONDS (5) +#define SAMPLES_PER_FRAME (2) +#define FRAMES_PER_BLOCK (64) + +/* Select whether we will use floats or shorts. */ +#if 1 +#define SAMPLE_TYPE paFloat32 +typedef float SAMPLE; +#else +#define SAMPLE_TYPE paInt16 +typedef short SAMPLE; +#endif + +/*******************************************************************/ +int main(void); +int main(void) +{ + int i; + SAMPLE samples[SAMPLES_PER_FRAME * FRAMES_PER_BLOCK]; + PaError err; + PABLIO_Stream *aStream; + + printf("Full duplex sound test using PortAudio and RingBuffers\n"); + fflush(stdout); + + /* Open simplified blocking I/O layer on top of PortAudio. */ + err = OpenAudioStream( &aStream, SAMPLE_RATE, SAMPLE_TYPE, + (PABLIO_READ_WRITE | PABLIO_STEREO) ); + if( err != paNoError ) goto error; + + /* Process samples in the foreground. */ + for( i=0; i<(NUM_SECONDS * SAMPLE_RATE); i += FRAMES_PER_BLOCK ) + { + /* Read one block of data into sample array from audio input. */ + ReadAudioStream( aStream, samples, FRAMES_PER_BLOCK ); + /* Write that same block of data to output. */ + WriteAudioStream( aStream, samples, FRAMES_PER_BLOCK ); + } + + CloseAudioStream( aStream ); + + printf("Full duplex sound test complete.\n" ); + fflush(stdout); + return 0; + +error: + 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; +} |