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Diffstat (limited to 'portaudio/test/patest_write_stop.c')
| -rw-r--r-- | portaudio/test/patest_write_stop.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/portaudio/test/patest_write_stop.c b/portaudio/test/patest_write_stop.c deleted file mode 100644 index 855923f..0000000 --- a/portaudio/test/patest_write_stop.c +++ /dev/null @@ -1,165 +0,0 @@ -/** @file patest_write_stop.c - @brief Play a few seconds of silence followed by a few cycles of a sine wave. Tests to make sure that pa_StopStream() completes playback in blocking I/O - @author Bjorn Roche of XO Audio (www.xoaudio.com) - @author Ross Bencina - @author Phil Burk -*/ -/* - * $Id$ - * - * 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; - int bufferCount; - const int framesBy2 = FRAMES_PER_BUFFER >> 1; - const float framesBy2f = (float) framesBy2 ; - - - printf( "PortAudio Test: output silence, followed by one buffer of a ramped 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 */ - outputParameters.channelCount = 2; /* stereo output */ - outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */ - outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency * 5; - outputParameters.hostApiSpecificStreamInfo = NULL; - - /* open the stream */ - 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; - - /* start the stream */ - err = Pa_StartStream( stream ); - if( err != paNoError ) goto error; - - printf("Playing %d seconds of silence followed by one buffer of a ramped sinusoid.\n", NUM_SECONDS ); - - bufferCount = ((NUM_SECONDS * SAMPLE_RATE) / FRAMES_PER_BUFFER); - - /* clear buffer */ - for( j=0; j < FRAMES_PER_BUFFER; j++ ) - { - buffer[j][0] = 0; /* left */ - buffer[j][1] = 0; /* right */ - } - /* play the silent buffer a bunch o' times */ - for( i=0; i < bufferCount; i++ ) - { - err = Pa_WriteStream( stream, buffer, FRAMES_PER_BUFFER ); - if( err != paNoError ) goto error; - } - /* play a non-silent buffer once */ - for( j=0; j < FRAMES_PER_BUFFER; j++ ) - { - float ramp = 1; - if( j < framesBy2 ) - ramp = j / framesBy2f; - else - ramp = (FRAMES_PER_BUFFER - j) / framesBy2f ; - - buffer[j][0] = sine[left_phase] * ramp; /* left */ - buffer[j][1] = sine[right_phase] * ramp; /* 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; - - /* stop stream, close, and terminate */ - err = Pa_StopStream( stream ); - if( err != paNoError ) goto error; - - err = Pa_CloseStream( stream ); - if( err != paNoError ) goto error; - - Pa_Terminate(); - printf("Test finished.\n"); - - return err; -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 ) ); - return err; -} |