231 lines
8.6 KiB
C
231 lines
8.6 KiB
C
/** @file pa_devs.c
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@brief List available devices, including device information.
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@author Phil Burk http://www.softsynth.com
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@note Define PA_NO_ASIO to compile this code on Windows without
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ASIO support.
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*/
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/*
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* $Id: pa_devs.c,v 1.1 2006/06/10 21:30:56 dmazzoni Exp $
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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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* 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.
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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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#include <stdio.h>
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#include <math.h>
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#include "portaudio.h"
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#ifdef WIN32
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#ifndef PA_NO_ASIO
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#include "pa_asio.h"
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#endif
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#endif
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/*******************************************************************/
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static void PrintSupportedStandardSampleRates(
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const PaStreamParameters *inputParameters,
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const PaStreamParameters *outputParameters )
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{
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static double standardSampleRates[] = {
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8000.0, 9600.0, 11025.0, 12000.0, 16000.0, 22050.0, 24000.0, 32000.0,
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44100.0, 48000.0, 88200.0, 96000.0, 192000.0, -1 /* negative terminated list */
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};
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int i, printCount;
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PaError err;
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printCount = 0;
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for( i=0; standardSampleRates[i] > 0; i++ )
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{
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err = Pa_IsFormatSupported( inputParameters, outputParameters, standardSampleRates[i] );
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if( err == paFormatIsSupported )
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{
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if( printCount == 0 )
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{
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printf( "\t%8.2f", standardSampleRates[i] );
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printCount = 1;
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}
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else if( printCount == 4 )
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{
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printf( ",\n\t%8.2f", standardSampleRates[i] );
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printCount = 1;
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}
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else
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{
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printf( ", %8.2f", standardSampleRates[i] );
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++printCount;
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}
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}
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}
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if( !printCount )
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printf( "None\n" );
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else
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printf( "\n" );
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}
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/*******************************************************************/
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int main(void);
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int main(void)
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{
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int i, numDevices, defaultDisplayed;
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const PaDeviceInfo *deviceInfo;
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PaStreamParameters inputParameters, outputParameters;
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PaError err;
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Pa_Initialize();
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printf( "PortAudio version number = %d\nPortAudio version text = '%s'\n",
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Pa_GetVersion(), Pa_GetVersionText() );
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numDevices = Pa_GetDeviceCount();
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if( numDevices < 0 )
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{
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printf( "ERROR: Pa_CountDevices returned 0x%x\n", numDevices );
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err = numDevices;
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goto error;
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}
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printf( "Number of devices = %d\n", numDevices );
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for( i=0; i<numDevices; i++ )
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{
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deviceInfo = Pa_GetDeviceInfo( i );
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printf( "--------------------------------------- device #%d\n", i );
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/* Mark global and API specific default devices */
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defaultDisplayed = 0;
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if( i == Pa_GetDefaultInputDevice() )
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{
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printf( "[ Default Input" );
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defaultDisplayed = 1;
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}
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else if( i == Pa_GetHostApiInfo( deviceInfo->hostApi )->defaultInputDevice )
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{
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const PaHostApiInfo *hostInfo = Pa_GetHostApiInfo( deviceInfo->hostApi );
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printf( "[ Default %s Input", hostInfo->name );
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defaultDisplayed = 1;
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}
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if( i == Pa_GetDefaultOutputDevice() )
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{
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printf( (defaultDisplayed ? "," : "[") );
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printf( " Default Output" );
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defaultDisplayed = 1;
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}
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else if( i == Pa_GetHostApiInfo( deviceInfo->hostApi )->defaultOutputDevice )
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{
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const PaHostApiInfo *hostInfo = Pa_GetHostApiInfo( deviceInfo->hostApi );
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printf( (defaultDisplayed ? "," : "[") );
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printf( " Default %s Output", hostInfo->name );
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defaultDisplayed = 1;
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}
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if( defaultDisplayed )
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printf( " ]\n" );
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/* print device info fields */
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printf( "Name = %s\n", deviceInfo->name );
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printf( "Host API = %s\n", Pa_GetHostApiInfo( deviceInfo->hostApi )->name );
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printf( "Max inputs = %d", deviceInfo->maxInputChannels );
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printf( ", Max outputs = %d\n", deviceInfo->maxOutputChannels );
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printf( "Default low input latency = %8.3f\n", deviceInfo->defaultLowInputLatency );
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printf( "Default low output latency = %8.3f\n", deviceInfo->defaultLowOutputLatency );
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printf( "Default high input latency = %8.3f\n", deviceInfo->defaultHighInputLatency );
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printf( "Default high output latency = %8.3f\n", deviceInfo->defaultHighOutputLatency );
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#ifdef WIN32
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#ifndef PA_NO_ASIO
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/* ASIO specific latency information */
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if( Pa_GetHostApiInfo( deviceInfo->hostApi )->type == paASIO ){
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long minLatency, maxLatency, preferredLatency, granularity;
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err = PaAsio_GetAvailableLatencyValues( i,
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&minLatency, &maxLatency, &preferredLatency, &granularity );
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printf( "ASIO minimum buffer size = %ld\n", minLatency );
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printf( "ASIO maximum buffer size = %ld\n", maxLatency );
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printf( "ASIO preferred buffer size = %ld\n", preferredLatency );
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if( granularity == -1 )
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printf( "ASIO buffer granularity = power of 2\n" );
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else
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printf( "ASIO buffer granularity = %ld\n", granularity );
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}
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#endif /* !PA_NO_ASIO */
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#endif /* WIN32 */
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printf( "Default sample rate = %8.2f\n", deviceInfo->defaultSampleRate );
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/* poll for standard sample rates */
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inputParameters.device = i;
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inputParameters.channelCount = deviceInfo->maxInputChannels;
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inputParameters.sampleFormat = paInt16;
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inputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */
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inputParameters.hostApiSpecificStreamInfo = NULL;
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outputParameters.device = i;
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outputParameters.channelCount = deviceInfo->maxOutputChannels;
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outputParameters.sampleFormat = paInt16;
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outputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */
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outputParameters.hostApiSpecificStreamInfo = NULL;
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if( inputParameters.channelCount > 0 )
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{
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printf("Supported standard sample rates\n for half-duplex 16 bit %d channel input = \n",
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inputParameters.channelCount );
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PrintSupportedStandardSampleRates( &inputParameters, NULL );
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}
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if( outputParameters.channelCount > 0 )
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{
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printf("Supported standard sample rates\n for half-duplex 16 bit %d channel output = \n",
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outputParameters.channelCount );
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PrintSupportedStandardSampleRates( NULL, &outputParameters );
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}
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if( inputParameters.channelCount > 0 && outputParameters.channelCount > 0 )
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{
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printf("Supported standard sample rates\n for full-duplex 16 bit %d channel input, %d channel output = \n",
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inputParameters.channelCount, outputParameters.channelCount );
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PrintSupportedStandardSampleRates( &inputParameters, &outputParameters );
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}
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}
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Pa_Terminate();
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printf("----------------------------------------------\n");
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return 0;
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error:
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Pa_Terminate();
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fprintf( stderr, "An error occured 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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return err;
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}
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