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_sine_time.c | 205 +++++++++++++++++++++++++++ 1 file changed, 205 insertions(+) create mode 100644 pd/portaudio_v18/pa_tests/patest_sine_time.c (limited to 'pd/portaudio_v18/pa_tests/patest_sine_time.c') diff --git a/pd/portaudio_v18/pa_tests/patest_sine_time.c b/pd/portaudio_v18/pa_tests/patest_sine_time.c new file mode 100644 index 00000000..e9bc33da --- /dev/null +++ b/pd/portaudio_v18/pa_tests/patest_sine_time.c @@ -0,0 +1,205 @@ +/* + * $Id: patest_sine_time.c,v 1.2 2002/03/21 00:58:45 philburk Exp $ + * patest_sine_time.c + * Play a sine wave using the Portable Audio api for several seconds. + * Pausing in the middle. + * use the Pa_StreamTime() and Pa_StreamActive() calls. + * + * Authors: + * Ross Bencina + * Phil Burk + * + * This program uses the PortAudio Portable Audio Library. + * For more information see: http://www.audiomulch.com/portaudio/ + * 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 "portaudio.h" +#define NUM_SECONDS (8) +#define SAMPLE_RATE (44100) +#define FRAMES_PER_BUFFER (64) +#define NUM_BUFFERS (0) +#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; + int framesToGo; + volatile PaTimestamp outTime; +} +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( void *inputBuffer, void *outputBuffer, + unsigned long framesPerBuffer, + PaTimestamp outTime, void *userData ) +{ + paTestData *data = (paTestData*)userData; + float *out = (float*)outputBuffer; + int i; + int framesToCalc; + int finished = 0; + (void) outTime; /* Prevent unused variable warnings. */ + (void) inputBuffer; + + data->outTime = outTime; + + if( data->framesToGo < framesPerBuffer ) + { + framesToCalc = data->framesToGo; + data->framesToGo = 0; + finished = 1; + } + else + { + framesToCalc = framesPerBuffer; + data->framesToGo -= framesPerBuffer; + } + + 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; + } + /* zero remainder of final buffer */ + for( ; i<(int)framesPerBuffer; i++ ) + { + *out++ = 0; /* left */ + *out++ = 0; /* right */ + } + return finished; +} +/*******************************************************************/ +static void ReportStreamTime( PortAudioStream *stream, paTestData *data ); +static void ReportStreamTime( PortAudioStream *stream, paTestData *data ) +{ + PaTimestamp streamTime, latency, outTime; + + streamTime = Pa_StreamTime( stream ); + outTime = data->outTime; + if( outTime < 0.0 ) + { + printf("Stream time = %8.1f\n", streamTime ); + } + else + { + latency = outTime - streamTime; + printf("Stream time = %8.1f, outTime = %8.1f, latency = %8.1f\n", + streamTime, outTime, latency ); + } + fflush(stdout); +} + +/*******************************************************************/ +int main(void); +int main(void) +{ + PortAudioStream *stream; + PaError err; + paTestData DATA; + int i; + int totalSamps; + printf("PortAudio Test: output sine wave. SR = %d, BufSize = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER); + /* initialise sinusoidal wavetable */ + for( i=0; i