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Diffstat (limited to 'portaudio/test/patest1.c')
| -rw-r--r-- | portaudio/test/patest1.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/portaudio/test/patest1.c b/portaudio/test/patest1.c deleted file mode 100644 index 25d6e3f..0000000 --- a/portaudio/test/patest1.c +++ /dev/null @@ -1,208 +0,0 @@ -/** @file patest1.c - @ingroup test_src - @brief Ring modulate the audio input with a sine wave for 20 seconds. - @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. - * - * 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 <math.h> -#include "portaudio.h" - -#ifndef M_PI -#define M_PI (3.14159265) -#endif - -#define SAMPLE_RATE (44100) - -typedef struct -{ - float sine[100]; - int phase; - int sampsToGo; -} -patest1data; - -static int patest1Callback( const void *inputBuffer, void *outputBuffer, - unsigned long framesPerBuffer, - const PaStreamCallbackTimeInfo* timeInfo, - PaStreamCallbackFlags statusFlags, - void *userData ) -{ - patest1data *data = (patest1data*)userData; - float *in = (float*)inputBuffer; - float *out = (float*)outputBuffer; - int framesToCalc = framesPerBuffer; - unsigned long i = 0; - int finished; - - if( data->sampsToGo < framesPerBuffer ) - { - framesToCalc = data->sampsToGo; - finished = paComplete; - } - else - { - finished = paContinue; - } - - for( ; i<framesToCalc; i++ ) - { - *out++ = *in++ * data->sine[data->phase]; /* left */ - *out++ = *in++ * data->sine[data->phase++]; /* right */ - if( data->phase >= 100 ) - data->phase = 0; - } - - data->sampsToGo -= framesToCalc; - - /* zero remainder of final buffer if not already done */ - for( ; i<framesPerBuffer; i++ ) - { - *out++ = 0; /* left */ - *out++ = 0; /* right */ - } - - return finished; -} - -int main(int argc, char* argv[]); -int main(int argc, char* argv[]) -{ - PaStream *stream; - PaError err; - patest1data data; - int i; - PaStreamParameters inputParameters, outputParameters; - const PaHostErrorInfo* herr; - - printf("patest1.c\n"); fflush(stdout); - printf("Ring modulate input for 20 seconds.\n"); fflush(stdout); - - /* initialise sinusoidal wavetable */ - for( i=0; i<100; i++ ) - data.sine[i] = sin( ((double)i/100.) * M_PI * 2. ); - data.phase = 0; - data.sampsToGo = SAMPLE_RATE * 20; /* 20 seconds. */ - - /* initialise portaudio subsystem */ - err = Pa_Initialize(); - - inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */ - if (inputParameters.device == paNoDevice) { - fprintf(stderr, "Error: No input default device.\n"); - goto done; - } - inputParameters.channelCount = 2; /* stereo input */ - inputParameters.sampleFormat = paFloat32; /* 32 bit floating point input */ - inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency; - inputParameters.hostApiSpecificStreamInfo = NULL; - - outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */ - if (outputParameters.device == paNoDevice) { - fprintf(stderr,"Error: No default output device.\n"); - goto done; - } - outputParameters.channelCount = 2; /* stereo output */ - outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */ - outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency; - outputParameters.hostApiSpecificStreamInfo = NULL; - - err = Pa_OpenStream( - &stream, - &inputParameters, - &outputParameters, - (double)SAMPLE_RATE, /* Samplerate in Hertz. */ - 512, /* Small buffers */ - paClipOff, /* We won't output out of range samples so don't bother clipping them. */ - patest1Callback, - &data ); - if( err != paNoError ) goto done; - - err = Pa_StartStream( stream ); - if( err != paNoError ) goto done; - - printf( "Press any key to end.\n" ); fflush(stdout); - - getc( stdin ); /* wait for input before exiting */ - - err = Pa_AbortStream( stream ); - if( err != paNoError ) goto done; - - printf( "Waiting for stream to complete...\n" ); - - /* sleep until playback has finished */ - while( ( err = Pa_IsStreamActive( stream ) ) == 1 ) Pa_Sleep(1000); - if( err < 0 ) goto done; - - err = Pa_CloseStream( stream ); - if( err != paNoError ) goto done; - -done: - Pa_Terminate(); - - if( err != paNoError ) - { - fprintf( stderr, "An error occurred while using portaudio\n" ); - if( err == paUnanticipatedHostError ) - { - fprintf( stderr, " unanticipated host error.\n"); - herr = Pa_GetLastHostErrorInfo(); - if (herr) - { - fprintf( stderr, " Error number: %ld\n", herr->errorCode ); - if (herr->errorText) - fprintf( stderr, " Error text: %s\n", herr->errorText ); - } - else - fprintf( stderr, " Pa_GetLastHostErrorInfo() failed!\n" ); - } - else - { - fprintf( stderr, " Error number: %d\n", err ); - fprintf( stderr, " Error text: %s\n", Pa_GetErrorText( err ) ); - } - - err = 1; /* Always return 0 or 1, but no other return codes. */ - } - - printf( "bye\n" ); - - return err; -} |