From a4dd0ad63c00f4dee3b86dfd3075d1d61b2b3180 Mon Sep 17 00:00:00 2001 From: sanine Date: Sat, 27 Aug 2022 23:52:56 -0500 Subject: add plibsys --- 3rdparty/portaudio/test/patest_in_overflow.c | 236 +++++++++++++++++++++++++++ 1 file changed, 236 insertions(+) create mode 100644 3rdparty/portaudio/test/patest_in_overflow.c (limited to '3rdparty/portaudio/test/patest_in_overflow.c') diff --git a/3rdparty/portaudio/test/patest_in_overflow.c b/3rdparty/portaudio/test/patest_in_overflow.c new file mode 100644 index 0000000..31868bd --- /dev/null +++ b/3rdparty/portaudio/test/patest_in_overflow.c @@ -0,0 +1,236 @@ +/** @file patest_in_overflow.c + @ingroup test_src + @brief Count input overflows (using paInputOverflow flag) under + overloaded and normal conditions. + This test uses the same method to overload the stream as does + patest_out_underflow.c -- it generates sine waves until the cpu load + exceeds a certain level. However this test is only concerned with + input and so doesn't output any sound. + + @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) 1999-2004 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 +#include +#include "portaudio.h" + +#define MAX_SINES (500) +#define MAX_LOAD (1.2) +#define SAMPLE_RATE (44100) +#define FRAMES_PER_BUFFER (512) +#ifndef M_PI +#define M_PI (3.14159265) +#endif +#define TWOPI (M_PI * 2.0) + +typedef struct paTestData +{ + int sineCount; + double phases[MAX_SINES]; + int countOverflows; + int inputOverflowCount; +} +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( const void *inputBuffer, void *outputBuffer, + unsigned long framesPerBuffer, + const PaStreamCallbackTimeInfo* timeInfo, + PaStreamCallbackFlags statusFlags, + void *userData ) +{ + paTestData *data = (paTestData*)userData; + float out; /* variable to hold dummy output */ + unsigned long i; + int j; + int finished = paContinue; + (void) timeInfo; /* Prevent unused variable warning. */ + (void) inputBuffer; /* Prevent unused variable warning. */ + (void) outputBuffer; /* Prevent unused variable warning. */ + + if( data->countOverflows && (statusFlags & paInputOverflow) ) + data->inputOverflowCount++; + + for( i=0; isineCount; j++ ) + { + /* Advance phase of next oscillator. */ + phase = data->phases[j]; + phase += phaseInc; + if( phase > TWOPI ) phase -= TWOPI; + + phaseInc *= 1.02; + if( phaseInc > 0.5 ) phaseInc *= 0.5; + + /* This is not a very efficient way to calc sines. */ + output += (float) sin( phase ); + data->phases[j] = phase; + } + /* this is an input-only stream so we don't actually use the output */ + out = (float) (output / data->sineCount); + (void) out; /* suppress unused variable warning*/ + } + + return finished; +} + +/*******************************************************************/ +int main(void); +int main(void) +{ + PaStreamParameters inputParameters; + PaStream *stream; + PaError err; + int safeSineCount, stressedSineCount; + int safeOverflowCount, stressedOverflowCount; + paTestData data = {0}; + double load; + + + printf("PortAudio Test: input only, no sound output. Load callback by performing calculations, count input overflows. SR = %d, BufSize = %d. MAX_LOAD = %f\n", + SAMPLE_RATE, FRAMES_PER_BUFFER, (float)MAX_LOAD ); + + err = Pa_Initialize(); + if( err != paNoError ) goto error; + + inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */ + if (inputParameters.device == paNoDevice) { + fprintf(stderr,"Error: No default input device.\n"); + goto error; + } + inputParameters.channelCount = 1; /* mono output */ + inputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */ + inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency; + inputParameters.hostApiSpecificStreamInfo = NULL; + + err = Pa_OpenStream( + &stream, + &inputParameters, + NULL, /* no output */ + SAMPLE_RATE, + FRAMES_PER_BUFFER, + paClipOff, /* we won't output out of range samples so don't bother clipping them */ + patestCallback, + &data ); + if( err != paNoError ) goto error; + err = Pa_StartStream( stream ); + if( err != paNoError ) goto error; + + printf("Establishing load conditions...\n" ); + + /* Determine number of sines required to get to 50% */ + do + { + data.sineCount++; + Pa_Sleep( 100 ); + + load = Pa_GetStreamCpuLoad( stream ); + printf("sineCount = %d, CPU load = %f\n", data.sineCount, load ); + } + while( load < 0.5 && data.sineCount < (MAX_SINES-1)); + + safeSineCount = data.sineCount; + + /* Calculate target stress value then ramp up to that level*/ + stressedSineCount = (int) (2.0 * data.sineCount * MAX_LOAD ); + if( stressedSineCount > MAX_SINES ) + stressedSineCount = MAX_SINES; + for( ; data.sineCount < stressedSineCount; data.sineCount++ ) + { + Pa_Sleep( 100 ); + load = Pa_GetStreamCpuLoad( stream ); + printf("STRESSING: sineCount = %d, CPU load = %f\n", data.sineCount, load ); + } + + printf("Counting overflows for 5 seconds.\n"); + data.countOverflows = 1; + Pa_Sleep( 5000 ); + + stressedOverflowCount = data.inputOverflowCount; + + data.countOverflows = 0; + data.sineCount = safeSineCount; + + printf("Resuming safe load...\n"); + Pa_Sleep( 1500 ); + data.inputOverflowCount = 0; + Pa_Sleep( 1500 ); + load = Pa_GetStreamCpuLoad( stream ); + printf("sineCount = %d, CPU load = %f\n", data.sineCount, load ); + + printf("Counting overflows for 5 seconds.\n"); + data.countOverflows = 1; + Pa_Sleep( 5000 ); + + safeOverflowCount = data.inputOverflowCount; + + printf("Stop stream.\n"); + err = Pa_StopStream( stream ); + if( err != paNoError ) goto error; + + err = Pa_CloseStream( stream ); + if( err != paNoError ) goto error; + + Pa_Terminate(); + + if( stressedOverflowCount == 0 ) + printf("Test failed, no input overflows detected under stress.\n"); + else if( safeOverflowCount != 0 ) + printf("Test failed, %d unexpected overflows detected under safe load.\n", safeOverflowCount); + else + printf("Test passed, %d expected input overflows detected under stress, 0 unexpected overflows detected under safe load.\n", stressedOverflowCount ); + + 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; +} -- cgit v1.2.1