285 lines
9.8 KiB
C
285 lines
9.8 KiB
C
|
/** @file patest_wire.c
|
||
|
|
@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,v 1.1 2006/06/10 21:30:57 dmazzoni Exp $
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
#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;
|
||
|
|
}
|