From a4dd0ad63c00f4dee3b86dfd3075d1d61b2b3180 Mon Sep 17 00:00:00 2001 From: sanine Date: Sat, 27 Aug 2022 23:52:56 -0500 Subject: add plibsys --- portaudio/test/patest_leftright.c | 185 -------------------------------------- 1 file changed, 185 deletions(-) delete mode 100644 portaudio/test/patest_leftright.c (limited to 'portaudio/test/patest_leftright.c') diff --git a/portaudio/test/patest_leftright.c b/portaudio/test/patest_leftright.c deleted file mode 100644 index e61a351..0000000 --- a/portaudio/test/patest_leftright.c +++ /dev/null @@ -1,185 +0,0 @@ -/** @file patest_leftright.c - @ingroup test_src - @brief Play different tone sine waves that - alternate between left and right channel. - - The low tone should be on the left channel. - - @author Ross Bencina - @author Phil Burk -*/ -/* - * $Id$ - * - * 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 -#include -#include "portaudio.h" - -#define NUM_SECONDS (8) -#define SAMPLE_RATE (44100) -#define FRAMES_PER_BUFFER (512) -#ifndef M_PI -#define M_PI (3.14159265) -#endif -#define TABLE_SIZE (200) -#define BALANCE_DELTA (0.001) - -typedef struct -{ - float sine[TABLE_SIZE]; - int left_phase; - int right_phase; - float targetBalance; // 0.0 = left, 1.0 = right - float currentBalance; -} paTestData; - -/* This routine will be called by the PortAudio engine when audio is needed. -** It may 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 patestCallback( const void *inputBuffer, - void *outputBuffer, - unsigned long framesPerBuffer, - const PaStreamCallbackTimeInfo* timeInfo, - PaStreamCallbackFlags statusFlags, - void *userData ) -{ - paTestData *data = (paTestData*)userData; - float *out = (float*)outputBuffer; - unsigned long i; - int finished = 0; - /* Prevent unused variable warnings. */ - (void) inputBuffer; - - for( i=0; icurrentBalance < data->targetBalance ) - { - data->currentBalance += BALANCE_DELTA; - } - else if( data->currentBalance > data->targetBalance ) - { - data->currentBalance -= BALANCE_DELTA; - } - // Apply left/right balance. - *out++ = data->sine[data->left_phase] * (1.0f - data->currentBalance); /* left */ - *out++ = data->sine[data->right_phase] * data->currentBalance; /* right */ - - data->left_phase += 1; - if( data->left_phase >= TABLE_SIZE ) data->left_phase -= TABLE_SIZE; - data->right_phase += 3; /* higher pitch so we can distinguish left and right. */ - if( data->right_phase >= TABLE_SIZE ) data->right_phase -= TABLE_SIZE; - } - - return finished; -} - -/*******************************************************************/ -int main(void); -int main(void) -{ - PaStream *stream; - PaStreamParameters outputParameters; - PaError err; - paTestData data; - int i; - printf("Play different tone sine waves that alternate between left and right channel.\n"); - printf("The low tone should be on the left channel.\n"); - - /* initialise sinusoidal wavetable */ - for( i=0; idefaultLowOutputLatency; - outputParameters.hostApiSpecificStreamInfo = NULL; - - err = Pa_OpenStream( &stream, - NULL, /* No input. */ - &outputParameters, /* As above. */ - SAMPLE_RATE, - FRAMES_PER_BUFFER, - paClipOff, /* we won't output out of range samples so don't bother clipping them */ - patestCallback, - &data ); - if( err != paNoError ) goto error; - - err = Pa_StartStream( stream ); - if( err != paNoError ) goto error; - - printf("Play for several seconds.\n"); - for( i=0; i<4; i++ ) - { - printf("Hear low sound on left side.\n"); - data.targetBalance = 0.01; - Pa_Sleep( 1000 ); - - printf("Hear high sound on right side.\n"); - data.targetBalance = 0.99; - Pa_Sleep( 1000 ); - } - - err = Pa_StopStream( stream ); - if( err != paNoError ) goto error; - err = Pa_CloseStream( stream ); - if( err != paNoError ) goto error; - Pa_Terminate(); - printf("Test finished.\n"); - return err; -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 err; -} -- cgit v1.2.1