diff options
Diffstat (limited to 'pd/portaudio_v18/pa_tests/patest_two_rates.c')
| -rw-r--r-- | pd/portaudio_v18/pa_tests/patest_two_rates.c | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/pd/portaudio_v18/pa_tests/patest_two_rates.c b/pd/portaudio_v18/pa_tests/patest_two_rates.c deleted file mode 100644 index 350ce043..00000000 --- a/pd/portaudio_v18/pa_tests/patest_two_rates.c +++ /dev/null @@ -1,168 +0,0 @@ -/* - * $Id: patest_two_rates.c,v 1.1.2.1 2003/02/11 21:42:24 philburk Exp $ - * patest_two_rates.c - * Play two streams at different rates to make sure they don't interfere. - * - * 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" - -#define OUTPUT_DEVICE (Pa_GetDefaultOutputDeviceID()) -#define SAMPLE_RATE_1 (44100) -#define SAMPLE_RATE_2 (44100) -#define FRAMES_PER_BUFFER (256) -#define FREQ_INCR (0.1) - -#ifndef M_PI -#define M_PI (3.14159265) -#endif - -typedef struct -{ - double phase; - double numFrames; -} 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 frameIndex, channelIndex; - int finished = 0; - (void) outTime; /* Prevent unused variable warnings. */ - (void) inputBuffer; - - for( frameIndex=0; frameIndex<(int)framesPerBuffer; frameIndex++ ) - { - /* Generate sine wave. */ - float value = (float) 0.3 * sin(data->phase); - /* Stereo - two channels. */ - *out++ = value; - *out++ = value; - - data->phase += FREQ_INCR; - if( data->phase >= (2.0 * M_PI) ) data->phase -= (2.0 * M_PI); - } - - return 0; -} - -/*******************************************************************/ -int main(void); -int main(void) -{ - PaError err; - PortAudioStream *stream1; - PortAudioStream *stream2; - paTestData data1 = {0}; - paTestData data2 = {0}; - printf("PortAudio Test: two rates.\n" ); - - err = Pa_Initialize(); - if( err != paNoError ) goto error; - - /* Start first stream. **********************/ - err = Pa_OpenStream( - &stream1, - paNoDevice, /* default input device */ - 0, /* no input */ - paFloat32, /* 32 bit floating point input */ - NULL, - OUTPUT_DEVICE, - 2, /* Stereo */ - paFloat32, /* 32 bit floating point output */ - NULL, - SAMPLE_RATE_1, - FRAMES_PER_BUFFER, /* frames per buffer */ - 0, /* number of buffers, if zero then use default minimum */ - paClipOff, /* we won't output out of range samples so don't bother clipping them */ - patestCallback, - &data1 ); - if( err != paNoError ) goto error; - - err = Pa_StartStream( stream1 ); - if( err != paNoError ) goto error; - - Pa_Sleep( 3 * 1000 ); - - /* Start second stream. **********************/ - err = Pa_OpenStream( - &stream2, - paNoDevice, /* default input device */ - 0, /* no input */ - paFloat32, /* 32 bit floating point input */ - NULL, - OUTPUT_DEVICE, - 2, /* Stereo */ - paFloat32, /* 32 bit floating point output */ - NULL, - SAMPLE_RATE_2, - FRAMES_PER_BUFFER, /* frames per buffer */ - 0, /* number of buffers, if zero then use default minimum */ - paClipOff, /* we won't output out of range samples so don't bother clipping them */ - patestCallback, - &data2 ); - if( err != paNoError ) goto error; - - err = Pa_StartStream( stream2 ); - if( err != paNoError ) goto error; - - Pa_Sleep( 3 * 1000 ); - - err = Pa_StopStream( stream2 ); - if( err != paNoError ) goto error; - - Pa_Sleep( 3 * 1000 ); - - err = Pa_StopStream( stream1 ); - if( err != paNoError ) goto error; - - Pa_CloseStream( stream2 ); - Pa_CloseStream( stream1 ); - - Pa_Terminate(); - printf("Test finished.\n"); - return err; -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 err; -} |