cannam@140: /** @file patest_unplug.c
cannam@140: 	@ingroup test_src
cannam@140: 	@brief Debug a crash involving unplugging a USB device.
cannam@140: 	@author Phil Burk  http://www.softsynth.com
cannam@140: */
cannam@140: /*
cannam@140:  * $Id$
cannam@140:  *
cannam@140:  * This program uses the PortAudio Portable Audio Library.
cannam@140:  * For more information see: http://www.portaudio.com
cannam@140:  * Copyright (c) 1999-2000 Ross Bencina and Phil Burk
cannam@140:  *
cannam@140:  * Permission is hereby granted, free of charge, to any person obtaining
cannam@140:  * a copy of this software and associated documentation files
cannam@140:  * (the "Software"), to deal in the Software without restriction,
cannam@140:  * including without limitation the rights to use, copy, modify, merge,
cannam@140:  * publish, distribute, sublicense, and/or sell copies of the Software,
cannam@140:  * and to permit persons to whom the Software is furnished to do so,
cannam@140:  * subject to the following conditions:
cannam@140:  *
cannam@140:  * The above copyright notice and this permission notice shall be
cannam@140:  * included in all copies or substantial portions of the Software.
cannam@140:  *
cannam@140:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
cannam@140:  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
cannam@140:  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
cannam@140:  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
cannam@140:  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
cannam@140:  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
cannam@140:  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
cannam@140:  */
cannam@140: 
cannam@140: /*
cannam@140:  * The text above constitutes the entire PortAudio license; however,
cannam@140:  * the PortAudio community also makes the following non-binding requests:
cannam@140:  *
cannam@140:  * Any person wishing to distribute modifications to the Software is
cannam@140:  * requested to send the modifications to the original developer so that
cannam@140:  * they can be incorporated into the canonical version. It is also
cannam@140:  * requested that these non-binding requests be included along with the
cannam@140:  * license above.
cannam@140:  */
cannam@140: 
cannam@140: #include <stdio.h>
cannam@140: #include <stdlib.h>
cannam@140: #include <memory.h>
cannam@140: #include <math.h>
cannam@140: #include "portaudio.h"
cannam@140: 
cannam@140: #define NUM_SECONDS   (8)
cannam@140: #define SAMPLE_RATE   (44100)
cannam@140: #ifndef M_PI
cannam@140: #define M_PI  (3.14159265)
cannam@140: #endif
cannam@140: #define TABLE_SIZE        (200)
cannam@140: #define FRAMES_PER_BUFFER  (64)
cannam@140: #define MAX_CHANNELS        (8)
cannam@140: 
cannam@140: typedef struct
cannam@140: {
cannam@140:     short sine[TABLE_SIZE];
cannam@140:     int32_t phases[MAX_CHANNELS];
cannam@140:     int32_t numChannels;
cannam@140:     int32_t sampsToGo;
cannam@140: }
cannam@140: paTestData;
cannam@140: 
cannam@140: 
cannam@140: static int inputCallback( const void *inputBuffer, void *outputBuffer,
cannam@140:                           unsigned long framesPerBuffer,
cannam@140:                           const PaStreamCallbackTimeInfo* timeInfo,
cannam@140:                           PaStreamCallbackFlags statusFlags,
cannam@140:                           void *userData )
cannam@140: {
cannam@140:     paTestData *data = (paTestData*)userData;
cannam@140:     int finished = 0;
cannam@140:     (void) inputBuffer; /* Prevent "unused variable" warnings. */
cannam@140:     (void) outputBuffer; /* Prevent "unused variable" warnings. */
cannam@140: 
cannam@140:     data->sampsToGo -= framesPerBuffer;
cannam@140:     if (data->sampsToGo <= 0)
cannam@140:     {
cannam@140:         data->sampsToGo = 0;
cannam@140:         finished = 1;
cannam@140:     }
cannam@140:     return finished;
cannam@140: }
cannam@140: 
cannam@140: static int outputCallback( const void *inputBuffer, void *outputBuffer,
cannam@140:                             unsigned long framesPerBuffer,
cannam@140:                             const PaStreamCallbackTimeInfo* timeInfo,
cannam@140:                             PaStreamCallbackFlags statusFlags,
cannam@140:                             void *userData )
cannam@140: {
cannam@140:     paTestData *data = (paTestData*)userData;
cannam@140:     short *out = (short*)outputBuffer;
cannam@140:     unsigned int i;
cannam@140:     int finished = 0;
cannam@140:     (void) inputBuffer; /* Prevent "unused variable" warnings. */
cannam@140: 
cannam@140:     for( i=0; i<framesPerBuffer; i++ )
cannam@140:     {
cannam@140:         for (int channelIndex = 0; channelIndex < data->numChannels; channelIndex++)
cannam@140:         {
cannam@140:             int phase = data->phases[channelIndex];
cannam@140:             *out++ = data->sine[phase];
cannam@140:             phase += channelIndex + 2;
cannam@140:             if( phase >= TABLE_SIZE ) phase -= TABLE_SIZE;
cannam@140:             data->phases[channelIndex] = phase;
cannam@140:         }
cannam@140:     }
cannam@140:     return finished;
cannam@140: }
cannam@140: 
cannam@140: /*******************************************************************/
cannam@140: int main(int argc, char **args);
cannam@140: int main(int argc, char **args)
cannam@140: {
cannam@140:     PaStreamParameters inputParameters;
cannam@140:     PaStreamParameters outputParameters;
cannam@140:     PaStream *inputStream;
cannam@140:     PaStream *outputStream;
cannam@140:     const PaDeviceInfo *deviceInfo;
cannam@140:     PaError err;
cannam@140:     paTestData data;
cannam@140:     int i;
cannam@140:     int totalSamps;
cannam@140:     int inputDevice = -1;
cannam@140:     int outputDevice = -1;
cannam@140: 
cannam@140:     printf("Test unplugging a USB device.\n");
cannam@140: 
cannam@140:     if( argc > 1 ) {
cannam@140:        inputDevice = outputDevice = atoi( args[1] );
cannam@140:        printf("Using device number %d.\n\n", inputDevice );
cannam@140:     } else {
cannam@140:        printf("Using default device.\n\n" );
cannam@140:     }
cannam@140: 
cannam@140:     memset(&data, 0, sizeof(data));
cannam@140: 
cannam@140:     /* initialise sinusoidal wavetable */
cannam@140:     for( i=0; i<TABLE_SIZE; i++ )
cannam@140:     {
cannam@140:         data.sine[i] = (short) (32767.0 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ));
cannam@140:     }
cannam@140:     data.numChannels = 2;
cannam@140:     data.sampsToGo = totalSamps =  NUM_SECONDS * SAMPLE_RATE; /* Play for a few seconds. */
cannam@140: 
cannam@140: 
cannam@140:     err = Pa_Initialize();
cannam@140:     if( err != paNoError ) goto error;
cannam@140: 
cannam@140:     if( inputDevice == -1 )
cannam@140:         inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
cannam@140:     else
cannam@140:         inputParameters.device = inputDevice ;
cannam@140: 
cannam@140:     if (inputParameters.device == paNoDevice) {
cannam@140:         fprintf(stderr,"Error: No default input device.\n");
cannam@140:         goto error;
cannam@140:     }
cannam@140: 
cannam@140:     if( outputDevice == -1 )
cannam@140:         outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
cannam@140:     else
cannam@140:         outputParameters.device = outputDevice ;
cannam@140: 
cannam@140:     if (outputParameters.device == paNoDevice) {
cannam@140:         fprintf(stderr,"Error: No default output device.\n");
cannam@140:         goto error;
cannam@140:     }
cannam@140: 
cannam@140:     inputParameters.channelCount = 2;
cannam@140:     inputParameters.sampleFormat = paInt16;
cannam@140:     deviceInfo = Pa_GetDeviceInfo( inputParameters.device );
cannam@140:     if( deviceInfo == NULL )
cannam@140:     {
cannam@140:         fprintf( stderr, "No matching input device.\n" );
cannam@140:         goto error;
cannam@140:     }
cannam@140:     inputParameters.suggestedLatency = deviceInfo->defaultLowInputLatency;
cannam@140:     inputParameters.hostApiSpecificStreamInfo = NULL;
cannam@140:     err = Pa_OpenStream(
cannam@140:                 &inputStream,
cannam@140:                 &inputParameters,
cannam@140:                 NULL,
cannam@140:                 SAMPLE_RATE,
cannam@140:                 FRAMES_PER_BUFFER,
cannam@140:                 0,
cannam@140:                 inputCallback,
cannam@140:                 &data );
cannam@140:     if( err != paNoError ) goto error;
cannam@140: 
cannam@140:     outputParameters.channelCount = 2;
cannam@140:     outputParameters.sampleFormat = paInt16;
cannam@140:     deviceInfo = Pa_GetDeviceInfo( outputParameters.device );
cannam@140:     if( deviceInfo == NULL )
cannam@140:     {
cannam@140:         fprintf( stderr, "No matching output device.\n" );
cannam@140:         goto error;
cannam@140:     }
cannam@140:     outputParameters.suggestedLatency = deviceInfo->defaultLowOutputLatency;
cannam@140:     outputParameters.hostApiSpecificStreamInfo = NULL;
cannam@140:     err = Pa_OpenStream(
cannam@140:                 &outputStream,
cannam@140:                 NULL,
cannam@140:                 &outputParameters,
cannam@140:                 SAMPLE_RATE,
cannam@140:                 FRAMES_PER_BUFFER,
cannam@140:                 (paClipOff | paDitherOff),
cannam@140:                 outputCallback,
cannam@140:                 &data );
cannam@140:     if( err != paNoError ) goto error;
cannam@140: 
cannam@140:     err = Pa_StartStream( inputStream );
cannam@140:     if( err != paNoError ) goto error;
cannam@140:     err = Pa_StartStream( outputStream );
cannam@140:     if( err != paNoError ) goto error;
cannam@140: 
cannam@140:     printf("When you hear sound, unplug the USB device.\n");
cannam@140:     do
cannam@140:     {
cannam@140:         Pa_Sleep(500);
cannam@140:         printf("Frames remaining = %d\n", data.sampsToGo);
cannam@140:         printf("Pa_IsStreamActive(inputStream) = %d\n", Pa_IsStreamActive(inputStream));
cannam@140:         printf("Pa_IsStreamActive(outputStream) = %d\n", Pa_IsStreamActive(outputStream));
cannam@140:     } while( Pa_IsStreamActive(inputStream) && Pa_IsStreamActive(outputStream) );
cannam@140: 
cannam@140:     err = Pa_CloseStream( inputStream );
cannam@140:     if( err != paNoError ) goto error;
cannam@140:     err = Pa_CloseStream( outputStream );
cannam@140:     if( err != paNoError ) goto error;
cannam@140:     Pa_Terminate();
cannam@140:     return paNoError;
cannam@140: error:
cannam@140:     Pa_Terminate();
cannam@140:     fprintf( stderr, "An error occured while using the portaudio stream\n" );
cannam@140:     fprintf( stderr, "Error number: %d\n", err );
cannam@140:     fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
cannam@140:     fprintf( stderr, "Host Error message: %s\n", Pa_GetLastHostErrorInfo()->errorText );
cannam@140:     return err;
cannam@140: }