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Diffstat (limited to 'portaudio/examples/paex_write_sine.c')
| -rw-r--r-- | portaudio/examples/paex_write_sine.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/portaudio/examples/paex_write_sine.c b/portaudio/examples/paex_write_sine.c deleted file mode 100644 index 3035b42..0000000 --- a/portaudio/examples/paex_write_sine.c +++ /dev/null @@ -1,166 +0,0 @@ -/** @file paex_write_sine.c - @ingroup examples_src - @brief Play a sine wave for several seconds using the blocking API (Pa_WriteStream()) - @author Ross Bencina <rossb@audiomulch.com> - @author Phil Burk <philburk@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 <math.h> -#include "portaudio.h" - -#define NUM_SECONDS (5) -#define SAMPLE_RATE (44100) -#define FRAMES_PER_BUFFER (1024) - -#ifndef M_PI -#define M_PI (3.14159265) -#endif - -#define TABLE_SIZE (200) - - -int main(void); -int main(void) -{ - PaStreamParameters outputParameters; - PaStream *stream; - PaError err; - float buffer[FRAMES_PER_BUFFER][2]; /* stereo output buffer */ - float sine[TABLE_SIZE]; /* sine wavetable */ - int left_phase = 0; - int right_phase = 0; - int left_inc = 1; - int right_inc = 3; /* higher pitch so we can distinguish left and right. */ - int i, j, k; - int bufferCount; - - printf("PortAudio Test: output sine wave. SR = %d, BufSize = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER); - - /* initialise sinusoidal wavetable */ - for( i=0; i<TABLE_SIZE; i++ ) - { - sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ); - } - - - err = Pa_Initialize(); - if( err != paNoError ) goto error; - - outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */ - if (outputParameters.device == paNoDevice) { - fprintf(stderr,"Error: No default output device.\n"); - goto error; - } - outputParameters.channelCount = 2; /* stereo output */ - outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */ - outputParameters.suggestedLatency = 0.050; // Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency; - outputParameters.hostApiSpecificStreamInfo = NULL; - - err = Pa_OpenStream( - &stream, - NULL, /* no input */ - &outputParameters, - SAMPLE_RATE, - FRAMES_PER_BUFFER, - paClipOff, /* we won't output out of range samples so don't bother clipping them */ - NULL, /* no callback, use blocking API */ - NULL ); /* no callback, so no callback userData */ - if( err != paNoError ) goto error; - - - printf( "Play 3 times, higher each time.\n" ); - - for( k=0; k < 3; ++k ) - { - err = Pa_StartStream( stream ); - if( err != paNoError ) goto error; - - printf("Play for %d seconds.\n", NUM_SECONDS ); - - bufferCount = ((NUM_SECONDS * SAMPLE_RATE) / FRAMES_PER_BUFFER); - - for( i=0; i < bufferCount; i++ ) - { - for( j=0; j < FRAMES_PER_BUFFER; j++ ) - { - buffer[j][0] = sine[left_phase]; /* left */ - buffer[j][1] = sine[right_phase]; /* right */ - left_phase += left_inc; - if( left_phase >= TABLE_SIZE ) left_phase -= TABLE_SIZE; - right_phase += right_inc; - if( right_phase >= TABLE_SIZE ) right_phase -= TABLE_SIZE; - } - - err = Pa_WriteStream( stream, buffer, FRAMES_PER_BUFFER ); - if( err != paNoError ) goto error; - } - - err = Pa_StopStream( stream ); - if( err != paNoError ) goto error; - - ++left_inc; - ++right_inc; - - Pa_Sleep( 1000 ); - } - - err = Pa_CloseStream( stream ); - if( err != paNoError ) goto error; - - Pa_Terminate(); - printf("Test finished.\n"); - - return err; - -error: - 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 ) ); - // Print more information about the error. - if( err == paUnanticipatedHostError ) - { - const PaHostErrorInfo *hostErrorInfo = Pa_GetLastHostErrorInfo(); - fprintf( stderr, "Host API error = #%ld, hostApiType = %d\n", hostErrorInfo->errorCode, hostErrorInfo->hostApiType ); - fprintf( stderr, "Host API error = %s\n", hostErrorInfo->errorText ); - } - Pa_Terminate(); - return err; -} |