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authorsanine <sanine.not@pm.me>2022-08-27 23:52:56 -0500
committersanine <sanine.not@pm.me>2022-08-27 23:52:56 -0500
commita4dd0ad63c00f4dee3b86dfd3075d1d61b2b3180 (patch)
tree13bd5bfa15e6fea2a12f176bae79adf9c6fd0933 /3rdparty/portaudio/test/patest_write_stop.c
parentbde3e4f1bb7b8f8abca0884a7d994ee1c17a66b1 (diff)
add plibsys
Diffstat (limited to '3rdparty/portaudio/test/patest_write_stop.c')
-rw-r--r--3rdparty/portaudio/test/patest_write_stop.c165
1 files changed, 165 insertions, 0 deletions
diff --git a/3rdparty/portaudio/test/patest_write_stop.c b/3rdparty/portaudio/test/patest_write_stop.c
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+++ b/3rdparty/portaudio/test/patest_write_stop.c
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+/** @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;
+}