diff options
author | Guenter Geiger <ggeiger@users.sourceforge.net> | 2004-02-02 12:18:59 +0000 |
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committer | Guenter Geiger <ggeiger@users.sourceforge.net> | 2004-02-02 12:18:59 +0000 |
commit | 2e416ee0095f1bf608f849f156d564e0f45fb8ab (patch) | |
tree | 9e4881e81953b434b91dbd35218d78f05b27e82e /pd/portaudio/pa_tests/pa_fuzz.c | |
parent | ae6b5d89ea93b95c2990895077cf5e8f0bba9ad9 (diff) |
merged in version_0_37_1test6
svn path=/trunk/; revision=1305
Diffstat (limited to 'pd/portaudio/pa_tests/pa_fuzz.c')
-rw-r--r-- | pd/portaudio/pa_tests/pa_fuzz.c | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/pd/portaudio/pa_tests/pa_fuzz.c b/pd/portaudio/pa_tests/pa_fuzz.c deleted file mode 100644 index 1ec88785..00000000 --- a/pd/portaudio/pa_tests/pa_fuzz.c +++ /dev/null @@ -1,168 +0,0 @@ -/* - * $Id: pa_fuzz.c,v 1.1.1.1 2003-05-09 16:03:56 ggeiger Exp $ - * pa_fuzz.c - * Distort input like a fuzz boz. - * - * Author: Phil Burk http://www.softsynth.com - * - * 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 <math.h> -#include "portaudio.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 PA_SAMPLE_TYPE paFloat32 -#define FRAMES_PER_BUFFER (64) - -typedef float SAMPLE; - -float CubicAmplifier( float input ); -static int fuzzCallback( void *inputBuffer, void *outputBuffer, - unsigned long framesPerBuffer, - const PaStreamCallbackTimeInfo* timeInfo, - PaStreamCallbackFlags statusFlags, - void *userData ); - -/* Non-linear amplifier with soft distortion curve. */ -float CubicAmplifier( float input ) -{ - float output, temp; - if( input < 0.0 ) - { - temp = input + 1.0f; - output = (temp * temp * temp) - 1.0f; - } - else - { - temp = input - 1.0f; - output = (temp * temp * temp) + 1.0f; - } - - return output; -} -#define FUZZ(x) CubicAmplifier(CubicAmplifier(CubicAmplifier(CubicAmplifier(x)))) - -static int gNumNoInputs = 0; -/* This routine will be called by the PortAudio engine when audio is needed. -** It may be called at interrupt level on some machines so don't do anything -** that could mess up the system like calling malloc() or free(). -*/ -static int fuzzCallback( void *inputBuffer, void *outputBuffer, - unsigned long framesPerBuffer, - const PaStreamCallbackTimeInfo* timeInfo, - PaStreamCallbackFlags statusFlags, - void *userData ) -{ - SAMPLE *out = (SAMPLE*)outputBuffer; - SAMPLE *in = (SAMPLE*)inputBuffer; - unsigned int i; - (void) timeInfo; /* Prevent unused variable warnings. */ - (void) statusFlags; - (void) userData; - - if( inputBuffer == NULL ) - { - for( i=0; i<framesPerBuffer; i++ ) - { - *out++ = 0; /* left - silent */ - *out++ = 0; /* right - silent */ - } - gNumNoInputs += 1; - } - else - { - for( i=0; i<framesPerBuffer; i++ ) - { - *out++ = FUZZ(*in++); /* left - distorted */ - *out++ = *in++; /* right - clean */ - } - } - - return paContinue; -} - -/*******************************************************************/ -int main(void); -int main(void) -{ - PaStreamParameters inputParameters, outputParameters; - PaStream *stream; - PaError err; - - err = Pa_Initialize(); - if( err != paNoError ) goto error; - - - inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */ - inputParameters.channelCount = 2; /* stereo input */ - inputParameters.sampleFormat = PA_SAMPLE_TYPE; - inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency; - inputParameters.hostApiSpecificStreamInfo = NULL; - - outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */ - outputParameters.channelCount = 2; /* stereo output */ - outputParameters.sampleFormat = PA_SAMPLE_TYPE; - outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency; - outputParameters.hostApiSpecificStreamInfo = NULL; - - err = Pa_OpenStream( - &stream, - &inputParameters, - &outputParameters, - SAMPLE_RATE, - FRAMES_PER_BUFFER, - 0, // paClipOff, /* we won't output out of range samples so don't bother clipping them */ - fuzzCallback, - NULL ); - if( err != paNoError ) goto error; - - err = Pa_StartStream( stream ); - if( err != paNoError ) goto error; - - printf("Hit ENTER to stop program.\n"); - getchar(); - err = Pa_CloseStream( stream ); - if( err != paNoError ) goto error; - - printf("Finished. gNumNoInputs = %d\n", gNumNoInputs ); - 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; -} |