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https://github.com/cookiengineer/audacity
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Move library tree where it belongs
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ra
346
lib-src/portaudio-v19/test/debug_record.c
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346
lib-src/portaudio-v19/test/debug_record.c
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/*
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* $Id: debug_record.c,v 1.8 2008-12-31 15:38:36 richardash1981 Exp $
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* debug_record.c
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* Record input into an array.
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* Save array to a file.
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* Based on patest_record.c but with various ugly debug hacks thrown in.
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*
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* Author: Phil Burk http://www.softsynth.com
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*
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* This program uses the PortAudio Portable Audio Library.
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* For more information see: http://www.portaudio.com
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* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* The text above constitutes the entire PortAudio license; however,
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* the PortAudio community also makes the following non-binding requests:
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*
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* Any person wishing to distribute modifications to the Software is
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* requested to send the modifications to the original developer so that
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* they can be incorporated into the canonical version. It is also
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* requested that these non-binding requests be included along with the
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* license above.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <memory.h>
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#include "portaudio.h"
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#define SAMPLE_RATE (22050)
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#define NUM_SECONDS (10)
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#define SLEEP_DUR_MSEC (200)
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#define FRAMES_PER_BUFFER (1<<10)
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#define NUM_REC_BUFS (0)
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#if 1
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#define PA_SAMPLE_TYPE paFloat32
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typedef float SAMPLE;
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#else
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#define PA_SAMPLE_TYPE paInt16
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typedef short SAMPLE;
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#endif
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typedef struct
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{
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long frameIndex; /* Index into sample array. */
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long maxFrameIndex;
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long samplesPerFrame;
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long numSamples;
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SAMPLE *recordedSamples;
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}
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paTestData;
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/* This routine will be called by the PortAudio engine when audio is needed.
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** It may be called at interrupt level on some machines so don't do anything
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** that could mess up the system like calling malloc() or free().
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*/
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static int recordCallback( void *inputBuffer, void *outputBuffer,
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unsigned long framesPerBuffer,
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PaTimestamp outTime, void *userData )
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{
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paTestData *data = (paTestData*)userData;
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SAMPLE *rptr = (SAMPLE*)inputBuffer;
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SAMPLE *wptr = &data->recordedSamples[data->frameIndex * data->samplesPerFrame];
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long framesToCalc;
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unsigned long i;
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int finished;
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unsigned long framesLeft = data->maxFrameIndex - data->frameIndex;
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(void) outputBuffer; /* Prevent unused variable warnings. */
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(void) outTime;
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if( framesLeft < framesPerBuffer )
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{
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framesToCalc = framesLeft;
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finished = 1;
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}
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else
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{
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framesToCalc = framesPerBuffer;
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finished = 0;
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}
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if( inputBuffer == NULL )
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{
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for( i=0; i<framesToCalc; i++ )
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{
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*wptr++ = 0; /* left */
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*wptr++ = 0; /* right */
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}
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}
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else
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{
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for( i=0; i<framesToCalc; i++ )
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{
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*wptr++ = *rptr++; /* left */
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*wptr++ = *rptr++; /* right */
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}
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}
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data->frameIndex += framesToCalc;
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return finished;
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}
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/* This routine will be called by the PortAudio engine when audio is needed.
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** It may be called at interrupt level on some machines so don't do anything
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** that could mess up the system like calling malloc() or free().
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*/
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static int playCallback( void *inputBuffer, void *outputBuffer,
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unsigned long framesPerBuffer,
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PaTimestamp outTime, void *userData )
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{
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paTestData *data = (paTestData*)userData;
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SAMPLE *rptr = &data->recordedSamples[data->frameIndex * data->samplesPerFrame];
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SAMPLE *wptr = (SAMPLE*)outputBuffer;
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unsigned long i;
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int finished;
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unsigned int framesLeft = data->maxFrameIndex - data->frameIndex;
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if( outputBuffer == NULL ) return 0;
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(void) inputBuffer; /* Prevent unused variable warnings. */
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(void) outTime;
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if( framesLeft < framesPerBuffer )
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{
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/* final buffer... */
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for( i=0; i<framesLeft; i++ )
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{
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*wptr++ = *rptr++; /* left */
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*wptr++ = *rptr++; /* right */
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}
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for( ; i<framesPerBuffer; i++ )
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{
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*wptr++ = 0; /* left */
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*wptr++ = 0; /* right */
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}
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data->frameIndex += framesLeft;
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finished = 1;
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}
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else
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{
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for( i=0; i<framesPerBuffer; i++ )
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{
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*wptr++ = *rptr++; /* left */
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*wptr++ = *rptr++; /* right */
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}
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data->frameIndex += framesPerBuffer;
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finished = 0;
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}
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return finished;
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}
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/****************************************************************/
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PaError TestRecording( paTestData *dataPtr )
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{
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PortAudioStream *stream;
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PaError err;
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int i;
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/* Record some audio. */
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err = Pa_OpenStream(
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&stream,
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Pa_GetDefaultInputDeviceID(),
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dataPtr->samplesPerFrame, /* stereo input */
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PA_SAMPLE_TYPE,
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NULL,
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paNoDevice,
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0,
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PA_SAMPLE_TYPE,
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NULL,
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SAMPLE_RATE,
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FRAMES_PER_BUFFER, /* frames per buffer */
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NUM_REC_BUFS, /* number of buffers, if zero then use default minimum */
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paClipOff, /* we won't output out of range samples so don't bother clipping them */
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recordCallback,
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dataPtr );
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if( err != paNoError ) goto error;
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err = Pa_StartStream( stream );
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if( err != paNoError ) goto error;
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printf("Now recording!\n"); fflush(stdout);
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for( i=0; i<(NUM_SECONDS*1000/SLEEP_DUR_MSEC); i++ )
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{
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if( Pa_StreamActive( stream ) <= 0)
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{
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printf("Stream inactive!\n");
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break;
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}
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if( dataPtr->maxFrameIndex <= dataPtr->frameIndex )
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{
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printf("Buffer recording complete.\n");
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break;
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}
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Pa_Sleep(100);
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printf("index = %d\n", dataPtr->frameIndex ); fflush(stdout);
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}
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printf("Finished loop. Close stream.\n"); fflush(stdout);
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err = Pa_CloseStream( stream );
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if( err != paNoError ) goto error;
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printf("Done.\n"); fflush(stdout);
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{
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SAMPLE max = 0;
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SAMPLE posVal;
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int i;
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for( i=0; i<dataPtr->numSamples; i++ )
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{
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posVal = dataPtr->recordedSamples[i];
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if( posVal < 0 ) posVal = -posVal;
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if( posVal > max ) max = posVal;
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}
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printf("Largest recorded sample = %d\n", max );
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}
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/* Write recorded data to a file. */
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#if 0
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{
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FILE *fid;
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fid = fopen("recorded.raw", "wb");
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if( fid == NULL )
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{
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printf("Could not open file.");
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}
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else
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{
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fwrite( dataPtr->recordedSamples, dataPtr->samplesPerFrame * sizeof(SAMPLE), totalFrames, fid );
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fclose( fid );
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printf("Wrote data to 'recorded.raw'\n");
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}
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}
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#endif
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error:
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return err;
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}
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/****************************************************************/
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PaError TestPlayback( paTestData *dataPtr )
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{
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PortAudioStream *stream;
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PaError err;
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int i;
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/* Playback recorded data. */
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dataPtr->frameIndex = 0;
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printf("Begin playback.\n"); fflush(stdout);
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err = Pa_OpenStream(
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&stream,
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paNoDevice,
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0, /* NO input */
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PA_SAMPLE_TYPE,
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NULL,
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Pa_GetDefaultOutputDeviceID(),
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dataPtr->samplesPerFrame, /* stereo output */
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PA_SAMPLE_TYPE,
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NULL,
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SAMPLE_RATE,
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FRAMES_PER_BUFFER, /* frames per buffer */
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0, /* number of buffers, if zero then use default minimum */
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paClipOff, /* we won't output out of range samples so don't bother clipping them */
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playCallback,
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dataPtr );
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if( err != paNoError ) goto error;
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err = Pa_StartStream( stream );
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if( err != paNoError ) goto error;
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printf("Waiting for playback to finish.\n"); fflush(stdout);
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for( i=0; i<(NUM_SECONDS*1000/SLEEP_DUR_MSEC); i++ )
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{
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Pa_Sleep(100);
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printf("index = %d\n", dataPtr->frameIndex );
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}
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err = Pa_CloseStream( stream );
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if( err != paNoError ) goto error;
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error:
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return err;
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}
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/*******************************************************************/
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int main(void);
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int main(void)
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{
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PaError err;
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paTestData data;
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long totalFrames;
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long numBytes;
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long i;
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printf("patest_record.c\n"); fflush(stdout);
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data.frameIndex = 0;
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data.samplesPerFrame = 2;
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data.maxFrameIndex = totalFrames = NUM_SECONDS*SAMPLE_RATE;
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printf("totalFrames = %d\n", totalFrames ); fflush(stdout);
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data.numSamples = totalFrames * data.samplesPerFrame;
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numBytes = data.numSamples * sizeof(SAMPLE);
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data.recordedSamples = (SAMPLE *) malloc( numBytes );
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if( data.recordedSamples == NULL )
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{
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printf("Could not allocate record array.\n");
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exit(1);
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}
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for( i=0; i<data.numSamples; i++ ) data.recordedSamples[i] = 0;
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err = Pa_Initialize();
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if( err != paNoError ) goto error;
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for( i=0; i<2; i++ )
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{
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err = TestRecording( &data );
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if( err != paNoError ) goto error;
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err = TestPlayback( &data );
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if( err != paNoError ) goto error;
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}
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free( data.recordedSamples );
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Pa_Terminate();
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return 0;
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error:
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Pa_Terminate();
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fprintf( stderr, "An error occured while using the portaudio stream\n" );
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fprintf( stderr, "Error number: %d\n", err );
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fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
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if( err == paHostError )
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{
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fprintf( stderr, "Host Error number: %d\n", Pa_GetHostError() );
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}
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return -1;
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}
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