comparison src/portaudio_20161030/test/patest_hang.c @ 140:59a8758c56b1

Add source for PortAudio stable v190600_20161030

+/** @file patest_hang.c
+	@ingroup test_src
+	@brief Play a sine then hang audio callback to test watchdog.
+	@author Ross Bencina <[e-mail]>
+	@author Phil Burk <[e-mail]>
+*/
+/*
+ * $Id$
+ *
+ * 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 SAMPLE_RATE       (44100)
+#define FRAMES_PER_BUFFER (1024)
+#ifndef M_PI
+#define M_PI              (3.14159265)
+#endif
+#define TWOPI             (M_PI * 2.0)
+
+typedef struct paTestData
+{
+    int    sleepFor;
+    double phase;
+}
+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;
+    double phaseInc = 0.02;
+    double phase = data->phase;
+    
+    (void) inputBuffer; /* Prevent unused argument warning. */
+
+    for( i=0; i<framesPerBuffer; i++ )
+    {
+        phase += phaseInc;
+        if( phase > TWOPI ) phase -= TWOPI;
+        /* This is not a very efficient way to calc sines. */
+        *out++ = (float) sin( phase ); /* mono */
+    }
+    
+    if( data->sleepFor > 0 )
+    {
+        Pa_Sleep( data->sleepFor );
+    }
+    
+    data->phase = phase;
+    return finished;
+}
+
+/*******************************************************************/
+int main(void);
+int main(void)
+{
+    PaStream*           stream;
+    PaStreamParameters  outputParameters;
+    PaError             err;
+    int                 i;
+    paTestData          data = {0};
+    
+    printf("PortAudio Test: output sine wave. SR = %d, BufSize = %d\n",
+        SAMPLE_RATE, FRAMES_PER_BUFFER );
+
+    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 = 1;                     /* Mono output. */
+    outputParameters.sampleFormat = paFloat32;             /* 32 bit floating point. */
+    outputParameters.hostApiSpecificStreamInfo = NULL;
+    outputParameters.suggestedLatency          = Pa_GetDeviceInfo(outputParameters.device)
+                                                 ->defaultLowOutputLatency;
+    err = Pa_OpenStream(&stream,
+                        NULL,                    /* No input. */
+                        &outputParameters,
+                        SAMPLE_RATE,
+                        FRAMES_PER_BUFFER,
+                        paClipOff,               /* No out of range samples. */
+                        patestCallback,
+                        &data);
+    if (err != paNoError) goto error;
+    
+    err = Pa_StartStream( stream );
+    if( err != paNoError ) goto error;
+
+    /* Gradually increase sleep time. */
+    /* Was: for( i=0; i<10000; i+= 1000 ) */
+    for(i=0; i <= 1000; i += 100)
+    {
+        printf("Sleep for %d milliseconds in audio callback.\n", i );
+        data.sleepFor = i;
+        Pa_Sleep( ((i<1000) ? 1000 : i) );
+    }
+    
+    printf("Suffer for 10 seconds.\n");
+    Pa_Sleep( 10000 );
+    
+    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 occured while using the portaudio stream\n" );
+    fprintf( stderr, "Error number: %d\n", err );
+    fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
+    return err;
+}