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DependentExtensions/portaudio_v18_1/pa_tests/debug_srate.c Normal file
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/*
* $Id: debug_srate.c,v 1.1 2002/05/02 20:16:29 philburk Exp $
* debug_record_reuse.c
* Record input into an array.
* Save array to a file.
* Based on patest_record.c but with various ugly debug hacks thrown in.
* Loop twice and reuse same streams.
*
* Author: Phil Burk http://www.softsynth.com
*
* 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 <stdlib.h>
#include <memory.h>
#include "portaudio.h"
#define EWS88MT_12_REC (1)
#define EWS88MT_12_PLAY (10)
#define SBLIVE_REC (2)
#define SBLIVE_PLAY (11)
#if 0
#define INPUT_DEVICE_ID Pa_GetDefaultInputDeviceID()
#define OUTPUT_DEVICE_ID Pa_GetDefaultOutputDeviceID()
#else
#define INPUT_DEVICE_ID (EWS88MT_12_REC)
#define OUTPUT_DEVICE_ID (SBLIVE_PLAY)
#endif
#define INPUT_SAMPLE_RATE (22050.0)
#define OUTPUT_SAMPLE_RATE (22050.0)
#define NUM_SECONDS (4)
#define SLEEP_DUR_MSEC (1000)
#define FRAMES_PER_BUFFER (64)
#define NUM_REC_BUFS (0)
#define SAMPLES_PER_FRAME (2)
#define PA_SAMPLE_TYPE paInt16
typedef short SAMPLE;
typedef struct
{
long frameIndex; /* Index into sample array. */
}
paTestData;
/* 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 recordCallback( void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
PaTimestamp outTime, void *userData )
{
paTestData *data = (paTestData *) userData;
(void) outputBuffer; /* Prevent unused variable warnings. */
(void) outTime;
if( inputBuffer != NULL )
{
data->frameIndex += framesPerBuffer;
}
return 0;
}
/* 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 playCallback( void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
PaTimestamp outTime, void *userData )
{
paTestData *data = (paTestData *) userData;
(void) inputBuffer; /* Prevent unused variable warnings. */
(void) outTime;
if( outputBuffer != NULL )
{
data->frameIndex += framesPerBuffer;
}
return 0;
}
/****************************************************************/
PaError MeasureStreamRate( PortAudioStream *stream, paTestData *dataPtr, double *ratePtr )
{
PaError err;
int i;
int totalFrames = 0;
int totalMSec = 0;
dataPtr->frameIndex = 0;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
for( i=0; i<(NUM_SECONDS*1000/SLEEP_DUR_MSEC); i++ )
{
int delta, endIndex;
int startIndex = dataPtr->frameIndex;
Pa_Sleep(SLEEP_DUR_MSEC);
endIndex = dataPtr->frameIndex;
delta = endIndex - startIndex;
totalFrames += delta;
totalMSec += SLEEP_DUR_MSEC;
printf("index = %d, delta = %d\n", endIndex, delta ); fflush(stdout);
}
err = Pa_StopStream( stream );
if( err != paNoError ) goto error;
*ratePtr = (totalFrames * 1000.0) / totalMSec;
error:
return err;
}
void ReportRate( double measuredRate, double expectedRate )
{
double error;
error = (measuredRate - expectedRate) / expectedRate;
error = (error < 0 ) ? -error : error;
printf("Measured rate = %6.1f, expected rate = %6.1f\n",
measuredRate, expectedRate );
if( error > 0.1 )
{
printf("ERROR: unexpected rate! --------------------- ERROR!\n");
}
else
{
printf("SUCCESS: rate within tolerance!\n");
}
}
/*******************************************************************/
int main(void);
int main(void)
{
PaError err;
paTestData data = { 0 };
long i;
double rate;
const PaDeviceInfo *pdi;
PortAudioStream *outputStream;
PortAudioStream *inputStream;
err = Pa_Initialize();
if( err != paNoError ) goto error;
pdi = Pa_GetDeviceInfo( INPUT_DEVICE_ID );
printf("Input device = %s\n", pdi->name );
pdi = Pa_GetDeviceInfo( OUTPUT_DEVICE_ID );
printf("Output device = %s\n", pdi->name );
/* Open input stream. */
err = Pa_OpenStream(
&inputStream,
INPUT_DEVICE_ID,
SAMPLES_PER_FRAME, /* stereo input */
PA_SAMPLE_TYPE,
NULL,
paNoDevice,
0,
PA_SAMPLE_TYPE,
NULL,
INPUT_SAMPLE_RATE,
FRAMES_PER_BUFFER, /* frames per buffer */
NUM_REC_BUFS, /* number of buffers, if zero then use default minimum */
paClipOff, /* we won't output out of range samples so don't bother clipping them */
recordCallback,
&data );
if( err != paNoError ) goto error;
err = Pa_OpenStream(
&outputStream,
paNoDevice,
0, /* NO input */
PA_SAMPLE_TYPE,
NULL,
OUTPUT_DEVICE_ID,
SAMPLES_PER_FRAME, /* stereo output */
PA_SAMPLE_TYPE,
NULL,
OUTPUT_SAMPLE_RATE,
FRAMES_PER_BUFFER, /* frames per buffer */
0, /* number of buffers, if zero then use default minimum */
paClipOff, /* we won't output out of range samples so don't bother clipping them */
playCallback,
&data );
if( err != paNoError ) goto error;
/* Record and playback multiple times. */
for( i=0; i<2; i++ )
{
printf("Measuring INPUT ------------------------- \n");
err = MeasureStreamRate( inputStream, &data, &rate );
if( err != paNoError ) goto error;
ReportRate( rate, INPUT_SAMPLE_RATE );
printf("Measuring OUTPUT ------------------------- \n");
err = MeasureStreamRate( outputStream, &data, &rate );
if( err != paNoError ) goto error;
ReportRate( rate, OUTPUT_SAMPLE_RATE );
}
/* Clean up. */
err = Pa_CloseStream( inputStream );
if( err != paNoError ) goto error;
err = Pa_CloseStream( outputStream );
if( err != paNoError ) goto error;
if( err != paNoError ) goto error;
Pa_Terminate();
printf("Test complete.\n"); fflush(stdout);
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 ) );
if( err == paHostError )
{
fprintf( stderr, "Host Error number: %d\n", Pa_GetHostError() );
}
return -1;
}