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

Add source for PortAudio stable v190600_20161030

+/** @file patest_unplug.c
+	@ingroup test_src
+	@brief Debug a crash involving unplugging a USB device.
+	@author Phil Burk  http://www.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 <stdlib.h>
+#include <memory.h>
+#include <math.h>
+#include "portaudio.h"
+
+#define NUM_SECONDS   (8)
+#define SAMPLE_RATE   (44100)
+#ifndef M_PI
+#define M_PI  (3.14159265)
+#endif
+#define TABLE_SIZE        (200)
+#define FRAMES_PER_BUFFER  (64)
+#define MAX_CHANNELS        (8)
+
+typedef struct
+{
+    short sine[TABLE_SIZE];
+    int32_t phases[MAX_CHANNELS];
+    int32_t numChannels;
+    int32_t sampsToGo;
+}
+paTestData;
+
+
+static int inputCallback( const void *inputBuffer, void *outputBuffer,
+                          unsigned long framesPerBuffer,
+                          const PaStreamCallbackTimeInfo* timeInfo,
+                          PaStreamCallbackFlags statusFlags,
+                          void *userData )
+{
+    paTestData *data = (paTestData*)userData;
+    int finished = 0;
+    (void) inputBuffer; /* Prevent "unused variable" warnings. */
+    (void) outputBuffer; /* Prevent "unused variable" warnings. */
+
+    data->sampsToGo -= framesPerBuffer;
+    if (data->sampsToGo <= 0)
+    {
+        data->sampsToGo = 0;
+        finished = 1;
+    }
+    return finished;
+}
+
+static int outputCallback( const void *inputBuffer, void *outputBuffer,
+                            unsigned long framesPerBuffer,
+                            const PaStreamCallbackTimeInfo* timeInfo,
+                            PaStreamCallbackFlags statusFlags,
+                            void *userData )
+{
+    paTestData *data = (paTestData*)userData;
+    short *out = (short*)outputBuffer;
+    unsigned int i;
+    int finished = 0;
+    (void) inputBuffer; /* Prevent "unused variable" warnings. */
+
+    for( i=0; i<framesPerBuffer; i++ )
+    {
+        for (int channelIndex = 0; channelIndex < data->numChannels; channelIndex++)
+        {
+            int phase = data->phases[channelIndex];
+            *out++ = data->sine[phase];
+            phase += channelIndex + 2;
+            if( phase >= TABLE_SIZE ) phase -= TABLE_SIZE;
+            data->phases[channelIndex] = phase;
+        }
+    }
+    return finished;
+}
+
+/*******************************************************************/
+int main(int argc, char **args);
+int main(int argc, char **args)
+{
+    PaStreamParameters inputParameters;
+    PaStreamParameters outputParameters;
+    PaStream *inputStream;
+    PaStream *outputStream;
+    const PaDeviceInfo *deviceInfo;
+    PaError err;
+    paTestData data;
+    int i;
+    int totalSamps;
+    int inputDevice = -1;
+    int outputDevice = -1;
+
+    printf("Test unplugging a USB device.\n");
+
+    if( argc > 1 ) {
+       inputDevice = outputDevice = atoi( args[1] );
+       printf("Using device number %d.\n\n", inputDevice );
+    } else {
+       printf("Using default device.\n\n" );
+    }
+
+    memset(&data, 0, sizeof(data));
+
+    /* initialise sinusoidal wavetable */
+    for( i=0; i<TABLE_SIZE; i++ )
+    {
+        data.sine[i] = (short) (32767.0 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ));
+    }
+    data.numChannels = 2;
+    data.sampsToGo = totalSamps =  NUM_SECONDS * SAMPLE_RATE; /* Play for a few seconds. */
+
+
+    err = Pa_Initialize();
+    if( err != paNoError ) goto error;
+
+    if( inputDevice == -1 )
+        inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
+    else
+        inputParameters.device = inputDevice ;
+
+    if (inputParameters.device == paNoDevice) {
+        fprintf(stderr,"Error: No default input device.\n");
+        goto error;
+    }
+
+    if( outputDevice == -1 )
+        outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
+    else
+        outputParameters.device = outputDevice ;
+
+    if (outputParameters.device == paNoDevice) {
+        fprintf(stderr,"Error: No default output device.\n");
+        goto error;
+    }
+
+    inputParameters.channelCount = 2;
+    inputParameters.sampleFormat = paInt16;
+    deviceInfo = Pa_GetDeviceInfo( inputParameters.device );
+    if( deviceInfo == NULL )
+    {
+        fprintf( stderr, "No matching input device.\n" );
+        goto error;
+    }
+    inputParameters.suggestedLatency = deviceInfo->defaultLowInputLatency;
+    inputParameters.hostApiSpecificStreamInfo = NULL;
+    err = Pa_OpenStream(
+                &inputStream,
+                &inputParameters,
+                NULL,
+                SAMPLE_RATE,
+                FRAMES_PER_BUFFER,
+                0,
+                inputCallback,
+                &data );
+    if( err != paNoError ) goto error;
+
+    outputParameters.channelCount = 2;
+    outputParameters.sampleFormat = paInt16;
+    deviceInfo = Pa_GetDeviceInfo( outputParameters.device );
+    if( deviceInfo == NULL )
+    {
+        fprintf( stderr, "No matching output device.\n" );
+        goto error;
+    }
+    outputParameters.suggestedLatency = deviceInfo->defaultLowOutputLatency;
+    outputParameters.hostApiSpecificStreamInfo = NULL;
+    err = Pa_OpenStream(
+                &outputStream,
+                NULL,
+                &outputParameters,
+                SAMPLE_RATE,
+                FRAMES_PER_BUFFER,
+                (paClipOff | paDitherOff),
+                outputCallback,
+                &data );
+    if( err != paNoError ) goto error;
+
+    err = Pa_StartStream( inputStream );
+    if( err != paNoError ) goto error;
+    err = Pa_StartStream( outputStream );
+    if( err != paNoError ) goto error;
+
+    printf("When you hear sound, unplug the USB device.\n");
+    do
+    {
+        Pa_Sleep(500);
+        printf("Frames remaining = %d\n", data.sampsToGo);
+        printf("Pa_IsStreamActive(inputStream) = %d\n", Pa_IsStreamActive(inputStream));
+        printf("Pa_IsStreamActive(outputStream) = %d\n", Pa_IsStreamActive(outputStream));
+    } while( Pa_IsStreamActive(inputStream) && Pa_IsStreamActive(outputStream) );
+
+    err = Pa_CloseStream( inputStream );
+    if( err != paNoError ) goto error;
+    err = Pa_CloseStream( outputStream );
+    if( err != paNoError ) goto error;
+    Pa_Terminate();
+    return paNoError;
+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 ) );
+    fprintf( stderr, "Host Error message: %s\n", Pa_GetLastHostErrorInfo()->errorText );
+    return err;
+}