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sanya
243
third_party/portaudio/test/patest_unplug.c
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243
third_party/portaudio/test/patest_unplug.c
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/** @file patest_unplug.c
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@ingroup test_src
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@brief Debug a crash involving unplugging a USB device.
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@author Phil Burk http://www.softsynth.com
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*/
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/*
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* $Id$
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*
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* This program uses the PortAudio Portable Audio Library.
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* For more information see: http://www.portaudio.com
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* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* The text above constitutes the entire PortAudio license; however,
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* the PortAudio community also makes the following non-binding requests:
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*
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* Any person wishing to distribute modifications to the Software is
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* requested to send the modifications to the original developer so that
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* they can be incorporated into the canonical version. It is also
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* requested that these non-binding requests be included along with the
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* license above.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <memory.h>
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#include <math.h>
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#include "portaudio.h"
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#define NUM_SECONDS (8)
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#define SAMPLE_RATE (44100)
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#ifndef M_PI
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#define M_PI (3.14159265)
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#endif
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#define TABLE_SIZE (200)
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#define FRAMES_PER_BUFFER (64)
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#define MAX_CHANNELS (8)
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typedef struct
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{
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short sine[TABLE_SIZE];
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int32_t phases[MAX_CHANNELS];
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int32_t numChannels;
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int32_t sampsToGo;
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}
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paTestData;
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static int inputCallback( const void *inputBuffer, void *outputBuffer,
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unsigned long framesPerBuffer,
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const PaStreamCallbackTimeInfo* timeInfo,
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PaStreamCallbackFlags statusFlags,
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void *userData )
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{
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paTestData *data = (paTestData*)userData;
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int finished = 0;
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(void) inputBuffer; /* Prevent "unused variable" warnings. */
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(void) outputBuffer; /* Prevent "unused variable" warnings. */
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data->sampsToGo -= framesPerBuffer;
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if (data->sampsToGo <= 0)
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{
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data->sampsToGo = 0;
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finished = 1;
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}
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return finished;
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}
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static int outputCallback( const void *inputBuffer, void *outputBuffer,
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unsigned long framesPerBuffer,
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const PaStreamCallbackTimeInfo* timeInfo,
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PaStreamCallbackFlags statusFlags,
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void *userData )
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{
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paTestData *data = (paTestData*)userData;
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short *out = (short*)outputBuffer;
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unsigned int i;
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int finished = 0;
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(void) inputBuffer; /* Prevent "unused variable" warnings. */
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for( i=0; i<framesPerBuffer; i++ )
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{
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for (int channelIndex = 0; channelIndex < data->numChannels; channelIndex++)
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{
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int phase = data->phases[channelIndex];
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*out++ = data->sine[phase];
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phase += channelIndex + 2;
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if( phase >= TABLE_SIZE ) phase -= TABLE_SIZE;
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data->phases[channelIndex] = phase;
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}
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}
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return finished;
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}
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/*******************************************************************/
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int main(int argc, char **args);
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int main(int argc, char **args)
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{
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PaStreamParameters inputParameters;
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PaStreamParameters outputParameters;
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PaStream *inputStream;
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PaStream *outputStream;
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const PaDeviceInfo *deviceInfo;
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PaError err;
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paTestData data;
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int i;
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int totalSamps;
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int inputDevice = -1;
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int outputDevice = -1;
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printf("Test unplugging a USB device.\n");
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if( argc > 1 ) {
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inputDevice = outputDevice = atoi( args[1] );
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printf("Using device number %d.\n\n", inputDevice );
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} else {
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printf("Using default device.\n\n" );
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}
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memset(&data, 0, sizeof(data));
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/* initialise sinusoidal wavetable */
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for( i=0; i<TABLE_SIZE; i++ )
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{
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data.sine[i] = (short) (32767.0 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ));
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}
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data.numChannels = 2;
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data.sampsToGo = totalSamps = NUM_SECONDS * SAMPLE_RATE; /* Play for a few seconds. */
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err = Pa_Initialize();
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if( err != paNoError ) goto error;
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if( inputDevice == -1 )
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inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
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else
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inputParameters.device = inputDevice ;
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if (inputParameters.device == paNoDevice) {
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fprintf(stderr,"Error: No default input device.\n");
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goto error;
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}
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if( outputDevice == -1 )
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outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
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else
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outputParameters.device = outputDevice ;
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if (outputParameters.device == paNoDevice) {
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fprintf(stderr,"Error: No default output device.\n");
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goto error;
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}
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inputParameters.channelCount = 2;
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inputParameters.sampleFormat = paInt16;
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deviceInfo = Pa_GetDeviceInfo( inputParameters.device );
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if( deviceInfo == NULL )
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{
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fprintf( stderr, "No matching input device.\n" );
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goto error;
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}
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inputParameters.suggestedLatency = deviceInfo->defaultLowInputLatency;
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inputParameters.hostApiSpecificStreamInfo = NULL;
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err = Pa_OpenStream(
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&inputStream,
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&inputParameters,
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NULL,
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SAMPLE_RATE,
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FRAMES_PER_BUFFER,
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0,
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inputCallback,
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&data );
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if( err != paNoError ) goto error;
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outputParameters.channelCount = 2;
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outputParameters.sampleFormat = paInt16;
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deviceInfo = Pa_GetDeviceInfo( outputParameters.device );
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if( deviceInfo == NULL )
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{
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fprintf( stderr, "No matching output device.\n" );
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goto error;
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}
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outputParameters.suggestedLatency = deviceInfo->defaultLowOutputLatency;
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outputParameters.hostApiSpecificStreamInfo = NULL;
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err = Pa_OpenStream(
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&outputStream,
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NULL,
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&outputParameters,
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SAMPLE_RATE,
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FRAMES_PER_BUFFER,
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(paClipOff | paDitherOff),
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outputCallback,
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&data );
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if( err != paNoError ) goto error;
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err = Pa_StartStream( inputStream );
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if( err != paNoError ) goto error;
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err = Pa_StartStream( outputStream );
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if( err != paNoError ) goto error;
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printf("When you hear sound, unplug the USB device.\n");
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do
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{
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Pa_Sleep(500);
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printf("Frames remaining = %d\n", data.sampsToGo);
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printf("Pa_IsStreamActive(inputStream) = %d\n", Pa_IsStreamActive(inputStream));
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printf("Pa_IsStreamActive(outputStream) = %d\n", Pa_IsStreamActive(outputStream));
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} while( Pa_IsStreamActive(inputStream) && Pa_IsStreamActive(outputStream) );
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err = Pa_CloseStream( inputStream );
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if( err != paNoError ) goto error;
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err = Pa_CloseStream( outputStream );
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if( err != paNoError ) goto error;
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Pa_Terminate();
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return paNoError;
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error:
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Pa_Terminate();
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fprintf( stderr, "An error occurred while using the portaudio stream\n" );
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fprintf( stderr, "Error number: %d\n", err );
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fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
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fprintf( stderr, "Host Error message: %s\n", Pa_GetLastHostErrorInfo()->errorText );
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return err;
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}
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