Chris@4: /** @file patest_wire.c
Chris@4: 	@ingroup test_src
Chris@4: 	@brief Pass input directly to output.
Chris@4: 
Chris@4: 	Note that some HW devices, for example many ISA audio cards
Chris@4: 	on PCs, do NOT support full duplex! For a PC, you normally need
Chris@4: 	a PCI based audio card such as the SBLive.
Chris@4: 
Chris@4: 	@author Phil Burk  http://www.softsynth.com
Chris@4:     
Chris@4:  While adapting to V19-API, I excluded configs with framesPerCallback=0
Chris@4:  because of an assert in file pa_common/pa_process.c. Pieter, Oct 9, 2003.
Chris@4: 
Chris@4: */
Chris@4: /*
Chris@4:  * $Id: patest_wire.c 1368 2008-03-01 00:38:27Z rossb $
Chris@4:  *
Chris@4:  * This program uses the PortAudio Portable Audio Library.
Chris@4:  * For more information see: http://www.portaudio.com
Chris@4:  * Copyright (c) 1999-2000 Ross Bencina and Phil Burk
Chris@4:  *
Chris@4:  * Permission is hereby granted, free of charge, to any person obtaining
Chris@4:  * a copy of this software and associated documentation files
Chris@4:  * (the "Software"), to deal in the Software without restriction,
Chris@4:  * including without limitation the rights to use, copy, modify, merge,
Chris@4:  * publish, distribute, sublicense, and/or sell copies of the Software,
Chris@4:  * and to permit persons to whom the Software is furnished to do so,
Chris@4:  * subject to the following conditions:
Chris@4:  *
Chris@4:  * The above copyright notice and this permission notice shall be
Chris@4:  * included in all copies or substantial portions of the Software.
Chris@4:  *
Chris@4:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
Chris@4:  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
Chris@4:  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
Chris@4:  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
Chris@4:  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
Chris@4:  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
Chris@4:  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Chris@4:  */
Chris@4: 
Chris@4: /*
Chris@4:  * The text above constitutes the entire PortAudio license; however, 
Chris@4:  * the PortAudio community also makes the following non-binding requests:
Chris@4:  *
Chris@4:  * Any person wishing to distribute modifications to the Software is
Chris@4:  * requested to send the modifications to the original developer so that
Chris@4:  * they can be incorporated into the canonical version. It is also 
Chris@4:  * requested that these non-binding requests be included along with the 
Chris@4:  * license above.
Chris@4:  */
Chris@4: 
Chris@4: #include <stdio.h>
Chris@4: #include <math.h>
Chris@4: #include "portaudio.h"
Chris@4: 
Chris@4: #define SAMPLE_RATE            (44100)
Chris@4: 
Chris@4: typedef struct WireConfig_s
Chris@4: {
Chris@4:     int isInputInterleaved;
Chris@4:     int isOutputInterleaved;
Chris@4:     int numInputChannels;
Chris@4:     int numOutputChannels;
Chris@4:     int framesPerCallback;
Chris@4: } WireConfig_t;
Chris@4: 
Chris@4: #define USE_FLOAT_INPUT        (1)
Chris@4: #define USE_FLOAT_OUTPUT       (1)
Chris@4: 
Chris@4: /* Latencies set to defaults. */
Chris@4: 
Chris@4: #if USE_FLOAT_INPUT
Chris@4:     #define INPUT_FORMAT  paFloat32
Chris@4:     typedef float INPUT_SAMPLE;
Chris@4: #else
Chris@4:     #define INPUT_FORMAT  paInt16
Chris@4:     typedef short INPUT_SAMPLE;
Chris@4: #endif
Chris@4: 
Chris@4: #if USE_FLOAT_OUTPUT
Chris@4:     #define OUTPUT_FORMAT  paFloat32
Chris@4:     typedef float OUTPUT_SAMPLE;
Chris@4: #else
Chris@4:     #define OUTPUT_FORMAT  paInt16
Chris@4:     typedef short OUTPUT_SAMPLE;
Chris@4: #endif
Chris@4: 
Chris@4: double gInOutScaler = 1.0;
Chris@4: #define CONVERT_IN_TO_OUT(in)  ((OUTPUT_SAMPLE) ((in) * gInOutScaler))
Chris@4: 
Chris@4: #define INPUT_DEVICE           (Pa_GetDefaultInputDevice())
Chris@4: #define OUTPUT_DEVICE          (Pa_GetDefaultOutputDevice())
Chris@4: 
Chris@4: static PaError TestConfiguration( WireConfig_t *config );
Chris@4: 
Chris@4: static int wireCallback( const void *inputBuffer, void *outputBuffer,
Chris@4:                          unsigned long framesPerBuffer,
Chris@4:                          const PaStreamCallbackTimeInfo* timeInfo,
Chris@4:                          PaStreamCallbackFlags statusFlags,
Chris@4:                          void *userData );
Chris@4: 
Chris@4: /* This routine will be called by the PortAudio engine when audio is needed.
Chris@4: ** It may be called at interrupt level on some machines so don't do anything
Chris@4: ** that could mess up the system like calling malloc() or free().
Chris@4: */
Chris@4: 
Chris@4: static int wireCallback( const void *inputBuffer, void *outputBuffer,
Chris@4:                          unsigned long framesPerBuffer,
Chris@4:                          const PaStreamCallbackTimeInfo* timeInfo,
Chris@4:                          PaStreamCallbackFlags statusFlags,
Chris@4:                          void *userData )
Chris@4: {
Chris@4:     INPUT_SAMPLE *in;
Chris@4:     OUTPUT_SAMPLE *out;
Chris@4:     int inStride;
Chris@4:     int outStride;
Chris@4:     int inDone = 0;
Chris@4:     int outDone = 0;
Chris@4:     WireConfig_t *config = (WireConfig_t *) userData;
Chris@4:     unsigned int i;
Chris@4:     int inChannel, outChannel;
Chris@4: 
Chris@4:     /* This may get called with NULL inputBuffer during initial setup. */
Chris@4:     if( inputBuffer == NULL) return 0;
Chris@4: 
Chris@4:     inChannel=0, outChannel=0;
Chris@4:     while( !(inDone && outDone) )
Chris@4:     {
Chris@4:         if( config->isInputInterleaved )
Chris@4:         {
Chris@4:             in = ((INPUT_SAMPLE*)inputBuffer) + inChannel;
Chris@4:             inStride = config->numInputChannels;
Chris@4:         }
Chris@4:         else
Chris@4:         {
Chris@4:             in = ((INPUT_SAMPLE**)inputBuffer)[inChannel];
Chris@4:             inStride = 1;
Chris@4:         }
Chris@4: 
Chris@4:         if( config->isOutputInterleaved )
Chris@4:         {
Chris@4:             out = ((OUTPUT_SAMPLE*)outputBuffer) + outChannel;
Chris@4:             outStride = config->numOutputChannels;
Chris@4:         }
Chris@4:         else
Chris@4:         {
Chris@4:             out = ((OUTPUT_SAMPLE**)outputBuffer)[outChannel];
Chris@4:             outStride = 1;
Chris@4:         }
Chris@4: 
Chris@4:         for( i=0; i<framesPerBuffer; i++ )
Chris@4:         {
Chris@4:             *out = CONVERT_IN_TO_OUT( *in );
Chris@4:             out += outStride;
Chris@4:             in += inStride;
Chris@4:         }
Chris@4: 
Chris@4:         if(inChannel < (config->numInputChannels - 1)) inChannel++;
Chris@4:         else inDone = 1;
Chris@4:         if(outChannel < (config->numOutputChannels - 1)) outChannel++;
Chris@4:         else outDone = 1;
Chris@4:     }
Chris@4:     return 0;
Chris@4: }
Chris@4: 
Chris@4: /*******************************************************************/
Chris@4: int main(void);
Chris@4: int main(void)
Chris@4: {
Chris@4:     PaError err = paNoError;
Chris@4:     WireConfig_t CONFIG;
Chris@4:     WireConfig_t *config = &CONFIG;
Chris@4:     int configIndex = 0;;
Chris@4: 
Chris@4:     err = Pa_Initialize();
Chris@4:     if( err != paNoError ) goto error;
Chris@4: 
Chris@4:     printf("Please connect audio signal to input and listen for it on output!\n");
Chris@4:     printf("input format = %lu\n", INPUT_FORMAT );
Chris@4:     printf("output format = %lu\n", OUTPUT_FORMAT );
Chris@4:     printf("input device ID  = %d\n", INPUT_DEVICE );
Chris@4:     printf("output device ID = %d\n", OUTPUT_DEVICE );
Chris@4: 
Chris@4:     if( INPUT_FORMAT == OUTPUT_FORMAT )
Chris@4:     {
Chris@4:         gInOutScaler = 1.0;
Chris@4:     }
Chris@4:     else if( (INPUT_FORMAT == paInt16) && (OUTPUT_FORMAT == paFloat32) )
Chris@4:     {
Chris@4:         gInOutScaler = 1.0/32768.0;
Chris@4:     }
Chris@4:     else if( (INPUT_FORMAT == paFloat32) && (OUTPUT_FORMAT == paInt16) )
Chris@4:     {
Chris@4:         gInOutScaler = 32768.0;
Chris@4:     }
Chris@4: 
Chris@4:     for( config->isInputInterleaved = 0; config->isInputInterleaved < 2; config->isInputInterleaved++ )
Chris@4:     {
Chris@4:         for( config->isOutputInterleaved = 0; config->isOutputInterleaved < 2; config->isOutputInterleaved++ )
Chris@4:         {
Chris@4:             for( config->numInputChannels = 1; config->numInputChannels < 3; config->numInputChannels++ )
Chris@4:             {
Chris@4:                 for( config->numOutputChannels = 1; config->numOutputChannels < 3; config->numOutputChannels++ )
Chris@4:                 {
Chris@4:                            /* If framesPerCallback = 0, assertion fails in file pa_common/pa_process.c, line 1413: EX. */
Chris@4:                     for( config->framesPerCallback = 64; config->framesPerCallback < 129; config->framesPerCallback += 64 )
Chris@4:                     {
Chris@4:                         printf("-----------------------------------------------\n" );
Chris@4:                         printf("Configuration #%d\n", configIndex++ );
Chris@4:                         err = TestConfiguration( config );
Chris@4:                         /* Give user a chance to bail out. */
Chris@4:                         if( err == 1 )
Chris@4:                         {
Chris@4:                             err = paNoError;
Chris@4:                             goto done;
Chris@4:                         }
Chris@4:                         else if( err != paNoError ) goto error;
Chris@4:                     }
Chris@4:                }
Chris@4:             }
Chris@4:         }
Chris@4:     }
Chris@4: 
Chris@4: done:
Chris@4:     Pa_Terminate();
Chris@4:     printf("Full duplex sound test complete.\n"); fflush(stdout);
Chris@4:     printf("Hit ENTER to quit.\n");  fflush(stdout);
Chris@4:     getchar();
Chris@4:     return 0;
Chris@4: 
Chris@4: error:
Chris@4:     Pa_Terminate();
Chris@4:     fprintf( stderr, "An error occured while using the portaudio stream\n" );
Chris@4:     fprintf( stderr, "Error number: %d\n", err );
Chris@4:     fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
Chris@4:     printf("Hit ENTER to quit.\n");  fflush(stdout);
Chris@4:     getchar();
Chris@4:     return -1;
Chris@4: }
Chris@4: 
Chris@4: static PaError TestConfiguration( WireConfig_t *config )
Chris@4: {
Chris@4:     int c;
Chris@4:     PaError err = paNoError;
Chris@4:     PaStream *stream;
Chris@4:     PaStreamParameters inputParameters, outputParameters;
Chris@4:     
Chris@4:     printf("input %sinterleaved!\n", (config->isInputInterleaved ? " " : "NOT ") );
Chris@4:     printf("output %sinterleaved!\n", (config->isOutputInterleaved ? " " : "NOT ") );
Chris@4:     printf("input channels = %d\n", config->numInputChannels );
Chris@4:     printf("output channels = %d\n", config->numOutputChannels );
Chris@4:     printf("framesPerCallback = %d\n", config->framesPerCallback );
Chris@4: 
Chris@4:     inputParameters.device = INPUT_DEVICE;              /* default input device */
Chris@4:     if (inputParameters.device == paNoDevice) {
Chris@4:         fprintf(stderr,"Error: No default input device.\n");
Chris@4:         goto error;
Chris@4:     }
Chris@4:     inputParameters.channelCount = config->numInputChannels;
Chris@4:     inputParameters.sampleFormat = INPUT_FORMAT | (config->isInputInterleaved ? 0 : paNonInterleaved);
Chris@4:     inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency;
Chris@4:     inputParameters.hostApiSpecificStreamInfo = NULL;
Chris@4: 
Chris@4:     outputParameters.device = OUTPUT_DEVICE;            /* default output device */
Chris@4:     if (outputParameters.device == paNoDevice) {
Chris@4:         fprintf(stderr,"Error: No default output device.\n");
Chris@4:         goto error;
Chris@4:     }
Chris@4:     outputParameters.channelCount = config->numOutputChannels;
Chris@4:     outputParameters.sampleFormat = OUTPUT_FORMAT | (config->isOutputInterleaved ? 0 : paNonInterleaved);
Chris@4:     outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
Chris@4:     outputParameters.hostApiSpecificStreamInfo = NULL;
Chris@4: 
Chris@4:     err = Pa_OpenStream(
Chris@4:               &stream,
Chris@4:               &inputParameters,
Chris@4:               &outputParameters,
Chris@4:               SAMPLE_RATE,
Chris@4:               config->framesPerCallback, /* frames per buffer */
Chris@4:               paClipOff, /* we won't output out of range samples so don't bother clipping them */
Chris@4:               wireCallback,
Chris@4:               config );
Chris@4:     if( err != paNoError ) goto error;
Chris@4:     
Chris@4:     err = Pa_StartStream( stream );
Chris@4:     if( err != paNoError ) goto error;
Chris@4:     
Chris@4:     printf("Hit ENTER for next configuration, or 'q' to quit.\n");  fflush(stdout);
Chris@4:     c = getchar();
Chris@4:     
Chris@4:     printf("Closing stream.\n");
Chris@4:     err = Pa_CloseStream( stream );
Chris@4:     if( err != paNoError ) goto error;
Chris@4: 
Chris@4:     if( c == 'q' ) return 1;
Chris@4: 
Chris@4: error:
Chris@4:     return err;
Chris@4: }