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Diffstat (limited to 'portaudio/test/patest_buffer.c')
| -rw-r--r-- | portaudio/test/patest_buffer.c | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/portaudio/test/patest_buffer.c b/portaudio/test/patest_buffer.c deleted file mode 100644 index d19e121..0000000 --- a/portaudio/test/patest_buffer.c +++ /dev/null @@ -1,206 +0,0 @@ -/** @file patest_buffer.c - @ingroup test_src - @brief Test opening streams with different buffer sizes. - @author Phil Burk http://www.softsynth.com -*/ -/* - * $Id$ - * - * 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 <stdio.h> -#include <stdlib.h> -#include <math.h> -#include "portaudio.h" -#define NUM_SECONDS (3) -#define SAMPLE_RATE (44100) -#ifndef M_PI -#define M_PI (3.14159265) -#endif -#define TABLE_SIZE (200) - -#define BUFFER_TABLE 14 -long buffer_table[] = {paFramesPerBufferUnspecified,16,32,64,128,200,256,500,512,600,723,1000,1024,2345}; - -typedef struct -{ - short sine[TABLE_SIZE]; - int left_phase; - int right_phase; - unsigned int sampsToGo; -} -paTestData; -PaError TestOnce( int buffersize, PaDeviceIndex ); - -/* 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 patest1Callback( const void *inputBuffer, void *outputBuffer, - unsigned long framesPerBuffer, - const PaStreamCallbackTimeInfo* timeInfo, - PaStreamCallbackFlags statusFlags, - void *userData ) -{ - paTestData *data = (paTestData*)userData; - short *out = (short*)outputBuffer; - unsigned int i; - int finished = 0; - (void) inputBuffer; /* Prevent "unused variable" warnings. */ - - if( data->sampsToGo < framesPerBuffer ) - { - /* final buffer... */ - - for( i=0; i<data->sampsToGo; 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( ; i<framesPerBuffer; i++ ) - { - *out++ = 0; /* left */ - *out++ = 0; /* right */ - } - - finished = 1; - } - else - { - for( i=0; i<framesPerBuffer; 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; - } - data->sampsToGo -= framesPerBuffer; - } - return finished; -} - -/*******************************************************************/ -int main(int argc, char **args); -int main(int argc, char **args) -{ - int i; - int device = -1; - PaError err; - printf("Test opening streams with different buffer sizes\n"); - if( argc > 1 ) { - device=atoi( args[1] ); - printf("Using device number %d.\n\n", device ); - } else { - printf("Using default device.\n\n" ); - } - - for (i = 0 ; i < BUFFER_TABLE; i++) - { - printf("Buffer size %ld\n", buffer_table[i]); - err = TestOnce(buffer_table[i], device); - if( err < 0 ) return 0; - - } - return 0; -} - - -PaError TestOnce( int buffersize, PaDeviceIndex device ) -{ - PaStreamParameters outputParameters; - PaStream *stream; - PaError err; - paTestData data; - int i; - int totalSamps; - /* initialise sinusoidal wavetable */ - for( i=0; i<TABLE_SIZE; i++ ) - { - data.sine[i] = (short) (32767.0 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. )); - } - data.left_phase = data.right_phase = 0; - data.sampsToGo = totalSamps = NUM_SECONDS * SAMPLE_RATE; /* Play for a few seconds. */ - err = Pa_Initialize(); - if( err != paNoError ) goto error; - - if( device == -1 ) - outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */ - else - outputParameters.device = device ; - - if (outputParameters.device == paNoDevice) { - fprintf(stderr,"Error: No default output device.\n"); - goto error; - } - - outputParameters.channelCount = 2; /* stereo output */ - outputParameters.sampleFormat = paInt16; /* 32 bit floating point output */ - outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency; - outputParameters.hostApiSpecificStreamInfo = NULL; - err = Pa_OpenStream( - &stream, - NULL, /* no input */ - &outputParameters, - SAMPLE_RATE, - buffersize, /* frames per buffer */ - (paClipOff | paDitherOff), - patest1Callback, - &data ); - if( err != paNoError ) goto error; - - err = Pa_StartStream( stream ); - if( err != paNoError ) goto error; - printf("Waiting for sound to finish.\n"); - Pa_Sleep(1000*NUM_SECONDS); - err = Pa_CloseStream( stream ); - if( err != paNoError ) goto error; - Pa_Terminate(); - return paNoError; -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 ) ); - fprintf( stderr, "Host Error message: %s\n", Pa_GetLastHostErrorInfo()->errorText ); - return err; -} |