From 37c97e345d12f95dde44e1d1a4c2f2aadd4615bc Mon Sep 17 00:00:00 2001 From: sanine Date: Thu, 25 Aug 2022 14:54:53 -0500 Subject: add initial structure --- portaudio/test/patest_sine_srate.c | 182 +++++++++++++++++++++++++++++++++++++ 1 file changed, 182 insertions(+) create mode 100644 portaudio/test/patest_sine_srate.c (limited to 'portaudio/test/patest_sine_srate.c') diff --git a/portaudio/test/patest_sine_srate.c b/portaudio/test/patest_sine_srate.c new file mode 100644 index 0000000..d4ce81b --- /dev/null +++ b/portaudio/test/patest_sine_srate.c @@ -0,0 +1,182 @@ +/* + * $Id: patest_sine.c 1097 2006-08-26 08:27:53Z rossb $ + * + * 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. + */ + +/** @file patest_sine_srate_mac.c + @ingroup test_src + @brief Plays sine waves at 44100 and 48000, + and forces the hardware to change if this is a mac. + Designed for use with CoreAudio. + @author Bjorn Roche + @author Ross Bencina + @author Phil Burk +*/ + +#include +#include +#include "portaudio.h" + +#ifdef __APPLE__ +#include "pa_mac_core.h" +#endif + +#define NUM_SECONDS (5) +#define SAMPLE_RATE1 (44100) +#define SAMPLE_RATE2 (48000) +#define FRAMES_PER_BUFFER (64) + +#ifndef M_PI +#define M_PI (3.14159265) +#endif + +#define TABLE_SIZE (200) +typedef struct +{ + float sine[TABLE_SIZE]; + int left_phase; + int right_phase; +} +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; + + (void) timeInfo; /* Prevent unused variable warnings. */ + (void) statusFlags; + (void) inputBuffer; + + for( i=0; isine[data->left_phase]; /* left */ + *out++ = data->sine[data->right_phase]; /* 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 paContinue; +} + +/*******************************************************************/ +int main(void); +int main(void) +{ + PaStreamParameters outputParameters; + PaStream *stream; + PaError err; + paTestData data; +#ifdef __APPLE__ + PaMacCoreStreamInfo macInfo; +#endif + int i; + + /* initialise sinusoidal wavetable */ + for( i=0; idefaultLowOutputLatency; + /** setup host specific info */ +#ifdef __APPLE__ + PaMacCore_SetupStreamInfo( &macInfo, paMacCorePro ); + outputParameters.hostApiSpecificStreamInfo = &macInfo; +#else + printf( "Hardware SR changing not being tested on this platform.\n" ); + outputParameters.hostApiSpecificStreamInfo = NULL; +#endif + err = Pa_OpenStream( + &stream, + NULL, /* no input */ + &outputParameters, + sr, + 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 %d seconds.\n", NUM_SECONDS ); + Pa_Sleep( NUM_SECONDS * 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