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-rw-r--r--portaudio/test/patest_read_record.c243
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diff --git a/portaudio/test/patest_read_record.c b/portaudio/test/patest_read_record.c
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+/** @file patest_read_record.c
+ @ingroup test_src
+ @brief Record input into an array; Save array to a file; Playback recorded
+ data. Implemented using the blocking API (Pa_ReadStream(), Pa_WriteStream() )
+ @author Phil Burk http://www.softsynth.com
+ @author Ross Bencina rossb@audiomulch.com
+*/
+/*
+ * $Id$
+ *
+ * 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 <stdlib.h>
+#include "portaudio.h"
+
+/* #define SAMPLE_RATE (17932) // Test failure to open with this value. */
+#define SAMPLE_RATE (44100)
+#define FRAMES_PER_BUFFER (1024)
+#define NUM_SECONDS (5)
+#define NUM_CHANNELS (2)
+/* #define DITHER_FLAG (paDitherOff) */
+#define DITHER_FLAG (0) /**/
+
+/* Select sample format. */
+#if 1
+#define PA_SAMPLE_TYPE paFloat32
+typedef float SAMPLE;
+#define SAMPLE_SILENCE (0.0f)
+#define PRINTF_S_FORMAT "%.8f"
+#elif 1
+#define PA_SAMPLE_TYPE paInt16
+typedef short SAMPLE;
+#define SAMPLE_SILENCE (0)
+#define PRINTF_S_FORMAT "%d"
+#elif 0
+#define PA_SAMPLE_TYPE paInt8
+typedef char SAMPLE;
+#define SAMPLE_SILENCE (0)
+#define PRINTF_S_FORMAT "%d"
+#else
+#define PA_SAMPLE_TYPE paUInt8
+typedef unsigned char SAMPLE;
+#define SAMPLE_SILENCE (128)
+#define PRINTF_S_FORMAT "%d"
+#endif
+
+
+/*******************************************************************/
+int main(void);
+int main(void)
+{
+ PaStreamParameters inputParameters, outputParameters;
+ PaStream *stream;
+ PaError err;
+ SAMPLE *recordedSamples;
+ int i;
+ int totalFrames;
+ int numSamples;
+ int numBytes;
+ SAMPLE max, average, val;
+
+
+ printf("patest_read_record.c\n"); fflush(stdout);
+
+ totalFrames = NUM_SECONDS * SAMPLE_RATE; /* Record for a few seconds. */
+ numSamples = totalFrames * NUM_CHANNELS;
+
+ numBytes = numSamples * sizeof(SAMPLE);
+ recordedSamples = (SAMPLE *) malloc( numBytes );
+ if( recordedSamples == NULL )
+ {
+ printf("Could not allocate record array.\n");
+ exit(1);
+ }
+ for( i=0; i<numSamples; i++ ) recordedSamples[i] = 0;
+
+ err = Pa_Initialize();
+ if( err != paNoError ) goto error;
+
+ inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
+ if (inputParameters.device == paNoDevice) {
+ fprintf(stderr,"Error: No default input device.\n");
+ goto error;
+ }
+ inputParameters.channelCount = NUM_CHANNELS;
+ inputParameters.sampleFormat = PA_SAMPLE_TYPE;
+ inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency;
+ inputParameters.hostApiSpecificStreamInfo = NULL;
+
+ /* Record some audio. -------------------------------------------- */
+ err = Pa_OpenStream(
+ &stream,
+ &inputParameters,
+ NULL, /* &outputParameters, */
+ SAMPLE_RATE,
+ FRAMES_PER_BUFFER,
+ paClipOff, /* we won't output out of range samples so don't bother clipping them */
+ NULL, /* no callback, use blocking API */
+ NULL ); /* no callback, so no callback userData */
+ if( err != paNoError ) goto error;
+
+ err = Pa_StartStream( stream );
+ if( err != paNoError ) goto error;
+ printf("Now recording!!\n"); fflush(stdout);
+
+ err = Pa_ReadStream( stream, recordedSamples, totalFrames );
+ if( err != paNoError ) goto error;
+
+ err = Pa_CloseStream( stream );
+ if( err != paNoError ) goto error;
+
+ /* Measure maximum peak amplitude. */
+ max = 0;
+ average = 0;
+ for( i=0; i<numSamples; i++ )
+ {
+ val = recordedSamples[i];
+ if( val < 0 ) val = -val; /* ABS */
+ if( val > max )
+ {
+ max = val;
+ }
+ average += val;
+ }
+
+ average = average / numSamples;
+
+ printf("Sample max amplitude = "PRINTF_S_FORMAT"\n", max );
+ printf("Sample average = "PRINTF_S_FORMAT"\n", average );
+/* Was as below. Better choose at compile time because this
+ keeps generating compiler-warnings:
+ if( PA_SAMPLE_TYPE == paFloat32 )
+ {
+ printf("sample max amplitude = %f\n", max );
+ printf("sample average = %f\n", average );
+ }
+ else
+ {
+ printf("sample max amplitude = %d\n", max );
+ printf("sample average = %d\n", average );
+ }
+*/
+ /* Write recorded data to a file. */
+#if 0
+ {
+ FILE *fid;
+ fid = fopen("recorded.raw", "wb");
+ if( fid == NULL )
+ {
+ printf("Could not open file.");
+ }
+ else
+ {
+ fwrite( recordedSamples, NUM_CHANNELS * sizeof(SAMPLE), totalFrames, fid );
+ fclose( fid );
+ printf("Wrote data to 'recorded.raw'\n");
+ }
+ }
+#endif
+
+ /* Playback recorded data. -------------------------------------------- */
+
+ outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
+ if (outputParameters.device == paNoDevice) {
+ fprintf(stderr,"Error: No default output device.\n");
+ goto error;
+ }
+ outputParameters.channelCount = NUM_CHANNELS;
+ outputParameters.sampleFormat = PA_SAMPLE_TYPE;
+ outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
+ outputParameters.hostApiSpecificStreamInfo = NULL;
+
+ printf("Begin playback.\n"); fflush(stdout);
+ err = Pa_OpenStream(
+ &stream,
+ NULL, /* no input */
+ &outputParameters,
+ SAMPLE_RATE,
+ FRAMES_PER_BUFFER,
+ paClipOff, /* we won't output out of range samples so don't bother clipping them */
+ NULL, /* no callback, use blocking API */
+ NULL ); /* no callback, so no callback userData */
+ if( err != paNoError ) goto error;
+
+ if( stream )
+ {
+ err = Pa_StartStream( stream );
+ if( err != paNoError ) goto error;
+ printf("Waiting for playback to finish.\n"); fflush(stdout);
+
+ err = Pa_WriteStream( stream, recordedSamples, totalFrames );
+ if( err != paNoError ) goto error;
+
+ err = Pa_CloseStream( stream );
+ if( err != paNoError ) goto error;
+ printf("Done.\n"); fflush(stdout);
+ }
+ free( recordedSamples );
+
+ Pa_Terminate();
+ return 0;
+
+error:
+ Pa_Terminate();
+ fprintf( stderr, "An error occurred while using the portaudio stream\n" );
+ fprintf( stderr, "Error number: %d\n", err );
+ fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
+ return -1;
+}
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