diff options
| author | sanine <sanine.not@pm.me> | 2022-08-27 23:52:56 -0500 | 
|---|---|---|
| committer | sanine <sanine.not@pm.me> | 2022-08-27 23:52:56 -0500 | 
| commit | a4dd0ad63c00f4dee3b86dfd3075d1d61b2b3180 (patch) | |
| tree | 13bd5bfa15e6fea2a12f176bae79adf9c6fd0933 /portaudio/test/patest_underflow.c | |
| parent | bde3e4f1bb7b8f8abca0884a7d994ee1c17a66b1 (diff) | |
add plibsys
Diffstat (limited to 'portaudio/test/patest_underflow.c')
| -rw-r--r-- | portaudio/test/patest_underflow.c | 162 | 
1 files changed, 0 insertions, 162 deletions
| diff --git a/portaudio/test/patest_underflow.c b/portaudio/test/patest_underflow.c deleted file mode 100644 index 96216a6..0000000 --- a/portaudio/test/patest_underflow.c +++ /dev/null @@ -1,162 +0,0 @@ -/** @file patest_underflow.c -    @ingroup test_src -    @brief Simulate an output buffer underflow condition. -    Tests whether the stream can be stopped when underflowing buffers. -    @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   (20) -#define SAMPLE_RATE   (44100) -#define FRAMES_PER_BUFFER  (2048) -#define MSEC_PER_BUFFER  ( (FRAMES_PER_BUFFER * 1000) / SAMPLE_RATE ) - -#ifndef M_PI -#define M_PI  (3.14159265) -#endif - -#define TABLE_SIZE   (200) -typedef struct -{ -    float sine[TABLE_SIZE]; -    int left_phase; -    int right_phase; -    int sleepTime; -} -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 = (float*)outputBuffer; -    unsigned long i; -    int finished = 0; -    (void) inputBuffer; /* Prevent unused variable warnings. */ -    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; -    } - -    /* Cause underflow to occur. */ -    if( data->sleepTime > 0 ) Pa_Sleep( data->sleepTime ); -    data->sleepTime += 1; - -    return finished; -} - -/*******************************************************************/ -int main(void); -int main(void) -{ -    PaStreamParameters outputParameters; -    PaStream *stream; -    PaError err; -    paTestData data; -    int i; -    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++ ) -    { -        data.sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ); -    } -    data.left_phase = data.right_phase = data.sleepTime = 0; -    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 = 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 */ -              patestCallback, -              &data ); -    if( err != paNoError ) goto error; -    err = Pa_StartStream( stream ); -    if( err != paNoError ) goto error; - -    while( data.sleepTime < (2 * MSEC_PER_BUFFER) ) -    { -        printf("SleepTime = %d\n", data.sleepTime ); -        Pa_Sleep( data.sleepTime ); -    } - -    printf("Try to stop stream.\n"); -    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; -} | 
