Chris@39: /** @file pa_devs.c Chris@39: @ingroup examples_src Chris@39: @brief List available devices, including device information. Chris@39: @author Phil Burk http://www.softsynth.com Chris@39: Chris@39: @note Define PA_USE_ASIO=0 to compile this code on Windows without Chris@39: ASIO support. Chris@39: */ Chris@39: /* Chris@39: * $Id: pa_devs.c 1891 2013-05-05 14:00:02Z rbencina $ Chris@39: * Chris@39: * This program uses the PortAudio Portable Audio Library. Chris@39: * For more information see: http://www.portaudio.com Chris@39: * Copyright (c) 1999-2000 Ross Bencina and Phil Burk Chris@39: * Chris@39: * Permission is hereby granted, free of charge, to any person obtaining Chris@39: * a copy of this software and associated documentation files Chris@39: * (the "Software"), to deal in the Software without restriction, Chris@39: * including without limitation the rights to use, copy, modify, merge, Chris@39: * publish, distribute, sublicense, and/or sell copies of the Software, Chris@39: * and to permit persons to whom the Software is furnished to do so, Chris@39: * subject to the following conditions: Chris@39: * Chris@39: * The above copyright notice and this permission notice shall be Chris@39: * included in all copies or substantial portions of the Software. Chris@39: * Chris@39: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, Chris@39: * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF Chris@39: * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. Chris@39: * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR Chris@39: * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF Chris@39: * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION Chris@39: * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Chris@39: */ Chris@39: Chris@39: /* Chris@39: * The text above constitutes the entire PortAudio license; however, Chris@39: * the PortAudio community also makes the following non-binding requests: Chris@39: * Chris@39: * Any person wishing to distribute modifications to the Software is Chris@39: * requested to send the modifications to the original developer so that Chris@39: * they can be incorporated into the canonical version. It is also Chris@39: * requested that these non-binding requests be included along with the Chris@39: * license above. Chris@39: */ Chris@39: Chris@39: #include Chris@39: #include Chris@39: #include "portaudio.h" Chris@39: Chris@39: #ifdef WIN32 Chris@39: #include Chris@39: Chris@39: #if PA_USE_ASIO Chris@39: #include "pa_asio.h" Chris@39: #endif Chris@39: #endif Chris@39: Chris@39: /*******************************************************************/ Chris@39: static void PrintSupportedStandardSampleRates( Chris@39: const PaStreamParameters *inputParameters, Chris@39: const PaStreamParameters *outputParameters ) Chris@39: { Chris@39: static double standardSampleRates[] = { Chris@39: 8000.0, 9600.0, 11025.0, 12000.0, 16000.0, 22050.0, 24000.0, 32000.0, Chris@39: 44100.0, 48000.0, 88200.0, 96000.0, 192000.0, -1 /* negative terminated list */ Chris@39: }; Chris@39: int i, printCount; Chris@39: PaError err; Chris@39: Chris@39: printCount = 0; Chris@39: for( i=0; standardSampleRates[i] > 0; i++ ) Chris@39: { Chris@39: err = Pa_IsFormatSupported( inputParameters, outputParameters, standardSampleRates[i] ); Chris@39: if( err == paFormatIsSupported ) Chris@39: { Chris@39: if( printCount == 0 ) Chris@39: { Chris@39: printf( "\t%8.2f", standardSampleRates[i] ); Chris@39: printCount = 1; Chris@39: } Chris@39: else if( printCount == 4 ) Chris@39: { Chris@39: printf( ",\n\t%8.2f", standardSampleRates[i] ); Chris@39: printCount = 1; Chris@39: } Chris@39: else Chris@39: { Chris@39: printf( ", %8.2f", standardSampleRates[i] ); Chris@39: ++printCount; Chris@39: } Chris@39: } Chris@39: } Chris@39: if( !printCount ) Chris@39: printf( "None\n" ); Chris@39: else Chris@39: printf( "\n" ); Chris@39: } Chris@39: Chris@39: /*******************************************************************/ Chris@39: int main(void); Chris@39: int main(void) Chris@39: { Chris@39: int i, numDevices, defaultDisplayed; Chris@39: const PaDeviceInfo *deviceInfo; Chris@39: PaStreamParameters inputParameters, outputParameters; Chris@39: PaError err; Chris@39: Chris@39: Chris@39: err = Pa_Initialize(); Chris@39: if( err != paNoError ) Chris@39: { Chris@39: printf( "ERROR: Pa_Initialize returned 0x%x\n", err ); Chris@39: goto error; Chris@39: } Chris@39: Chris@39: printf( "PortAudio version number = %d\nPortAudio version text = '%s'\n", Chris@39: Pa_GetVersion(), Pa_GetVersionText() ); Chris@39: Chris@39: Chris@39: numDevices = Pa_GetDeviceCount(); Chris@39: if( numDevices < 0 ) Chris@39: { Chris@39: printf( "ERROR: Pa_GetDeviceCount returned 0x%x\n", numDevices ); Chris@39: err = numDevices; Chris@39: goto error; Chris@39: } Chris@39: Chris@39: printf( "Number of devices = %d\n", numDevices ); Chris@39: for( i=0; ihostApi )->defaultInputDevice ) Chris@39: { Chris@39: const PaHostApiInfo *hostInfo = Pa_GetHostApiInfo( deviceInfo->hostApi ); Chris@39: printf( "[ Default %s Input", hostInfo->name ); Chris@39: defaultDisplayed = 1; Chris@39: } Chris@39: Chris@39: if( i == Pa_GetDefaultOutputDevice() ) Chris@39: { Chris@39: printf( (defaultDisplayed ? "," : "[") ); Chris@39: printf( " Default Output" ); Chris@39: defaultDisplayed = 1; Chris@39: } Chris@39: else if( i == Pa_GetHostApiInfo( deviceInfo->hostApi )->defaultOutputDevice ) Chris@39: { Chris@39: const PaHostApiInfo *hostInfo = Pa_GetHostApiInfo( deviceInfo->hostApi ); Chris@39: printf( (defaultDisplayed ? "," : "[") ); Chris@39: printf( " Default %s Output", hostInfo->name ); Chris@39: defaultDisplayed = 1; Chris@39: } Chris@39: Chris@39: if( defaultDisplayed ) Chris@39: printf( " ]\n" ); Chris@39: Chris@39: /* print device info fields */ Chris@39: #ifdef WIN32 Chris@39: { /* Use wide char on windows, so we can show UTF-8 encoded device names */ Chris@39: wchar_t wideName[MAX_PATH]; Chris@39: MultiByteToWideChar(CP_UTF8, 0, deviceInfo->name, -1, wideName, MAX_PATH-1); Chris@39: wprintf( L"Name = %s\n", wideName ); Chris@39: } Chris@39: #else Chris@39: printf( "Name = %s\n", deviceInfo->name ); Chris@39: #endif Chris@39: printf( "Host API = %s\n", Pa_GetHostApiInfo( deviceInfo->hostApi )->name ); Chris@39: printf( "Max inputs = %d", deviceInfo->maxInputChannels ); Chris@39: printf( ", Max outputs = %d\n", deviceInfo->maxOutputChannels ); Chris@39: Chris@39: printf( "Default low input latency = %8.4f\n", deviceInfo->defaultLowInputLatency ); Chris@39: printf( "Default low output latency = %8.4f\n", deviceInfo->defaultLowOutputLatency ); Chris@39: printf( "Default high input latency = %8.4f\n", deviceInfo->defaultHighInputLatency ); Chris@39: printf( "Default high output latency = %8.4f\n", deviceInfo->defaultHighOutputLatency ); Chris@39: Chris@39: #ifdef WIN32 Chris@39: #if PA_USE_ASIO Chris@39: /* ASIO specific latency information */ Chris@39: if( Pa_GetHostApiInfo( deviceInfo->hostApi )->type == paASIO ){ Chris@39: long minLatency, maxLatency, preferredLatency, granularity; Chris@39: Chris@39: err = PaAsio_GetAvailableLatencyValues( i, Chris@39: &minLatency, &maxLatency, &preferredLatency, &granularity ); Chris@39: Chris@39: printf( "ASIO minimum buffer size = %ld\n", minLatency ); Chris@39: printf( "ASIO maximum buffer size = %ld\n", maxLatency ); Chris@39: printf( "ASIO preferred buffer size = %ld\n", preferredLatency ); Chris@39: Chris@39: if( granularity == -1 ) Chris@39: printf( "ASIO buffer granularity = power of 2\n" ); Chris@39: else Chris@39: printf( "ASIO buffer granularity = %ld\n", granularity ); Chris@39: } Chris@39: #endif /* PA_USE_ASIO */ Chris@39: #endif /* WIN32 */ Chris@39: Chris@39: printf( "Default sample rate = %8.2f\n", deviceInfo->defaultSampleRate ); Chris@39: Chris@39: /* poll for standard sample rates */ Chris@39: inputParameters.device = i; Chris@39: inputParameters.channelCount = deviceInfo->maxInputChannels; Chris@39: inputParameters.sampleFormat = paInt16; Chris@39: inputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */ Chris@39: inputParameters.hostApiSpecificStreamInfo = NULL; Chris@39: Chris@39: outputParameters.device = i; Chris@39: outputParameters.channelCount = deviceInfo->maxOutputChannels; Chris@39: outputParameters.sampleFormat = paInt16; Chris@39: outputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */ Chris@39: outputParameters.hostApiSpecificStreamInfo = NULL; Chris@39: Chris@39: if( inputParameters.channelCount > 0 ) Chris@39: { Chris@39: printf("Supported standard sample rates\n for half-duplex 16 bit %d channel input = \n", Chris@39: inputParameters.channelCount ); Chris@39: PrintSupportedStandardSampleRates( &inputParameters, NULL ); Chris@39: } Chris@39: Chris@39: if( outputParameters.channelCount > 0 ) Chris@39: { Chris@39: printf("Supported standard sample rates\n for half-duplex 16 bit %d channel output = \n", Chris@39: outputParameters.channelCount ); Chris@39: PrintSupportedStandardSampleRates( NULL, &outputParameters ); Chris@39: } Chris@39: Chris@39: if( inputParameters.channelCount > 0 && outputParameters.channelCount > 0 ) Chris@39: { Chris@39: printf("Supported standard sample rates\n for full-duplex 16 bit %d channel input, %d channel output = \n", Chris@39: inputParameters.channelCount, outputParameters.channelCount ); Chris@39: PrintSupportedStandardSampleRates( &inputParameters, &outputParameters ); Chris@39: } Chris@39: } Chris@39: Chris@39: Pa_Terminate(); Chris@39: Chris@39: printf("----------------------------------------------\n"); Chris@39: return 0; Chris@39: Chris@39: error: Chris@39: Pa_Terminate(); Chris@39: fprintf( stderr, "Error number: %d\n", err ); Chris@39: fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) ); Chris@39: return err; Chris@39: }