/** @file patest_wire.c
@ingroup test_src
@brief Pass input directly to output.
Note that some HW devices, for example many ISA audio cards
on PCs, do NOT support full duplex! For a PC, you normally need
a PCI based audio card such as the SBLive.
@author Phil Burk http://www.softsynth.com
While adapting to V19-API, I excluded configs with framesPerCallback=0
because of an assert in file pa_common/pa_process.c. Pieter, Oct 9, 2003.
*/
/*
* $Id: patest_wire.c 1097 2006-08-26 08:27:53Z rossb $
*
* This program uses the PortAudio Portable Audio Library.
* For more information see: http://www.portaudio.com
* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
#include <stdio.h>
#include <math.h>
#include "portaudio.h"
#define SAMPLE_RATE (44100)
typedef struct WireConfig_s
{
int isInputInterleaved;
int isOutputInterleaved;
int numInputChannels;
int numOutputChannels;
int framesPerCallback;
} WireConfig_t;
#define USE_FLOAT_INPUT (1)
#define USE_FLOAT_OUTPUT (1)
/* Latencies set to defaults. */
#if USE_FLOAT_INPUT
#define INPUT_FORMAT paFloat32
typedef float INPUT_SAMPLE;
#else
#define INPUT_FORMAT paInt16
typedef short INPUT_SAMPLE;
#endif
#if USE_FLOAT_OUTPUT
#define OUTPUT_FORMAT paFloat32
typedef float OUTPUT_SAMPLE;
#else
#define OUTPUT_FORMAT paInt16
typedef short OUTPUT_SAMPLE;
#endif
double gInOutScaler = 1.0;
#define CONVERT_IN_TO_OUT(in) ((OUTPUT_SAMPLE) ((in) * gInOutScaler))
#define INPUT_DEVICE (Pa_GetDefaultInputDevice())
#define OUTPUT_DEVICE (Pa_GetDefaultOutputDevice())
static PaError TestConfiguration( WireConfig_t *config );
static int wireCallback( const void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void *userData );
/* This routine will be called by the PortAudio engine when audio is needed.
** It may be called at interrupt level on some machines so don't do anything
** that could mess up the system like calling malloc() or free().
*/
static int wireCallback( const void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void *userData )
{
INPUT_SAMPLE *in;
OUTPUT_SAMPLE *out;
int inStride;
int outStride;
int inDone = 0;
int outDone = 0;
WireConfig_t *config = (WireConfig_t *) userData;
unsigned int i;
int inChannel, outChannel;
/* This may get called with NULL inputBuffer during initial setup. */
if( inputBuffer == NULL) return 0;
inChannel=0, outChannel=0;
while( !(inDone && outDone) )
{
if( config->isInputInterleaved )
{
in = ((INPUT_SAMPLE*)inputBuffer) + inChannel;
inStride = config->numInputChannels;
}
else
{
in = ((INPUT_SAMPLE**)inputBuffer)[inChannel];
inStride = 1;
}
if( config->isOutputInterleaved )
{
out = ((OUTPUT_SAMPLE*)outputBuffer) + outChannel;
outStride = config->numOutputChannels;
}
else
{
out = ((OUTPUT_SAMPLE**)outputBuffer)[outChannel];
outStride = 1;
}
for( i=0; i<framesPerBuffer; i++ )
{
*out = CONVERT_IN_TO_OUT( *in );
out += outStride;
in += inStride;
}
if(inChannel < (config->numInputChannels - 1)) inChannel++;
else inDone = 1;
if(outChannel < (config->numOutputChannels - 1)) outChannel++;
else outDone = 1;
}
return 0;
}
/*******************************************************************/
int main(void);
int main(void)
{
PaError err;
WireConfig_t CONFIG;
WireConfig_t *config = &CONFIG;
int configIndex = 0;;
err = Pa_Initialize();
if( err != paNoError ) goto error;
printf("Please connect audio signal to input and listen for it on output!\n");
printf("input format = %lu\n", INPUT_FORMAT );
printf("output format = %lu\n", OUTPUT_FORMAT );
printf("input device ID = %d\n", INPUT_DEVICE );
printf("output device ID = %d\n", OUTPUT_DEVICE );
if( INPUT_FORMAT == OUTPUT_FORMAT )
{
gInOutScaler = 1.0;
}
else if( (INPUT_FORMAT == paInt16) && (OUTPUT_FORMAT == paFloat32) )
{
gInOutScaler = 1.0/32768.0;
}
else if( (INPUT_FORMAT == paFloat32) && (OUTPUT_FORMAT == paInt16) )
{
gInOutScaler = 32768.0;
}
for( config->isInputInterleaved = 0; config->isInputInterleaved < 2; config->isInputInterleaved++ )
{
for( config->isOutputInterleaved = 0; config->isOutputInterleaved < 2; config->isOutputInterleaved++ )
{
for( config->numInputChannels = 1; config->numInputChannels < 3; config->numInputChannels++ )
{
for( config->numOutputChannels = 1; config->numOutputChannels < 3; config->numOutputChannels++ )
{
/* If framesPerCallback = 0, assertion fails in file pa_common/pa_process.c, line 1413: EX. */
for( config->framesPerCallback = 64; config->framesPerCallback < 129; config->framesPerCallback += 64 )
{
printf("-----------------------------------------------\n" );
printf("Configuration #%d\n", configIndex++ );
err = TestConfiguration( config );
/* Give user a chance to bail out. */
if( err == 1 )
{
err = paNoError;
goto done;
}
else if( err != paNoError ) goto error;
}
}
}
}
}
done:
Pa_Terminate();
printf("Full duplex sound test complete.\n"); fflush(stdout);
printf("Hit ENTER to quit.\n"); fflush(stdout);
getchar();
return 0;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
printf("Hit ENTER to quit.\n"); fflush(stdout);
getchar();
return -1;
}
static PaError TestConfiguration( WireConfig_t *config )
{
int c;
PaError err;
PaStream *stream;
PaStreamParameters inputParameters, outputParameters;
printf("input %sinterleaved!\n", (config->isInputInterleaved ? " " : "NOT ") );
printf("output %sinterleaved!\n", (config->isOutputInterleaved ? " " : "NOT ") );
printf("input channels = %d\n", config->numInputChannels );
printf("output channels = %d\n", config->numOutputChannels );
printf("framesPerCallback = %d\n", config->framesPerCallback );
inputParameters.device = INPUT_DEVICE; /* default input device */
inputParameters.channelCount = config->numInputChannels;
inputParameters.sampleFormat = INPUT_FORMAT | (config->isInputInterleaved ? 0 : paNonInterleaved);
inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency;
inputParameters.hostApiSpecificStreamInfo = NULL;
outputParameters.device = OUTPUT_DEVICE; /* default output device */
outputParameters.channelCount = config->numOutputChannels;
outputParameters.sampleFormat = OUTPUT_FORMAT | (config->isOutputInterleaved ? 0 : paNonInterleaved);
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
err = Pa_OpenStream(
&stream,
&inputParameters,
&outputParameters,
SAMPLE_RATE,
config->framesPerCallback, /* frames per buffer */
paClipOff, /* we won't output out of range samples so don't bother clipping them */
wireCallback,
config );
if( err != paNoError ) goto error;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Hit ENTER for next configuration, or 'q' to quit.\n"); fflush(stdout);
c = getchar();
printf("Closing stream.\n");
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
if( c == 'q' ) return 1;
error:
return err;
}