From ae6b5d89ea93b95c2990895077cf5e8f0bba9ad9 Mon Sep 17 00:00:00 2001 From: Guenter Geiger Date: Mon, 2 Feb 2004 11:28:02 +0000 Subject: This commit was generated by cvs2svn to compensate for changes in r1301, which included commits to RCS files with non-trunk default branches. svn path=/trunk/; revision=1302 --- pd/portaudio_v18/pa_tests/patest_buffer.c | 180 ++++++++++++++++++++++++++++++ 1 file changed, 180 insertions(+) create mode 100644 pd/portaudio_v18/pa_tests/patest_buffer.c (limited to 'pd/portaudio_v18/pa_tests/patest_buffer.c') diff --git a/pd/portaudio_v18/pa_tests/patest_buffer.c b/pd/portaudio_v18/pa_tests/patest_buffer.c new file mode 100644 index 00000000..8d61f4f7 --- /dev/null +++ b/pd/portaudio_v18/pa_tests/patest_buffer.c @@ -0,0 +1,180 @@ +/* + * $Id: patest_buffer.c,v 1.1.1.1.4.1 2003/02/11 21:41:32 philburk Exp $ + * patest_buffer.c + * Test opening streams with different buffer sizes. + * + * 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 +#include +#include +#include "portaudio.h" +#define NUM_SECONDS (1) +#define SAMPLE_RATE (44100) +#ifndef M_PI +#define M_PI (3.14159265) +#endif +#define TABLE_SIZE (200) + +#define BUFFER_TABLE 9 +long buffer_table[] = {200,256,500,512,600, 723, 1000, 1024, 2345}; + +typedef struct +{ + short sine[TABLE_SIZE]; + int left_phase; + int right_phase; + unsigned int sampsToGo; +} +paTestData; +PaError TestOnce( int buffersize ); + +static int paSineCallback( void *inputBuffer, void *outputBuffer, + unsigned long framesPerBuffer, + PaTimestamp outTime, void *userData ); +/* 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 paSineCallback( void *inputBuffer, void *outputBuffer, + unsigned long framesPerBuffer, + PaTimestamp outTime, void *userData ) +{ + paTestData *data = (paTestData*)userData; + short *out = (short*)outputBuffer; + unsigned int i; + int finished = 0; + (void) inputBuffer; /* Prevent "unused variable" warnings. */ + (void) outTime; + + if( data->sampsToGo < framesPerBuffer ) + { + for( i=0; isampsToGo; i++ ) + { + *out++ = data->sine[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; + } + /* zero remainder of final buffer */ + for( ; 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; + } + data->sampsToGo -= framesPerBuffer; + } + return finished; +} +/*******************************************************************/ +int main(void); +int main(void) +{ + int i; + PaError err; + printf("Test opening streams with different buffer sizes\n\n"); + + for (i = 0 ; i < BUFFER_TABLE; i++) + { + printf("Buffer size %d\n", buffer_table[i]); + err = TestOnce(buffer_table[i]); + if( err < 0 ) return 0; + + } +} + + +PaError TestOnce( int buffersize ) +{ + PortAudioStream *stream; + PaError err; + paTestData data; + int i; + int totalSamps; + /* initialise sinusoidal wavetable */ + for( i=0; i