portaudio/pablio/test_rw.c

/*
 * $Id: test_rw.c 1083 2006-08-23 07:30:49Z rossb $
 * test_rw.c
 * Read input from one stream and write it to another.
 *
 * Author: Phil Burk, http://www.softsynth.com/portaudio/
 *
 * This program uses PABLIO, the Portable Audio Blocking I/O Library.
 * PABLIO is built on top of PortAudio, the 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 "pablio.h"

/*
** Note that many of the older ISA sound cards on PCs do NOT support
** full duplex audio (simultaneous record and playback).
** And some only support full duplex at lower sample rates.
*/
#define SAMPLE_RATE          (44100)
#define NUM_SECONDS              (5)
#define SAMPLES_PER_FRAME        (2)
#define FRAMES_PER_BLOCK        (64)

/* Select whether we will use floats or shorts. */
#if 1
#define SAMPLE_TYPE  paFloat32
typedef float SAMPLE;
#else
#define SAMPLE_TYPE  paInt16
typedef short SAMPLE;
#endif

/*******************************************************************/
int main(void);
int main(void)
{
    int      i;
    SAMPLE   samples[SAMPLES_PER_FRAME * FRAMES_PER_BLOCK];
    PaError  err;
    PABLIO_Stream     *aStream;

    printf("Full duplex sound test using PortAudio and RingBuffers\n");
    fflush(stdout);

    /* Open simplified blocking I/O layer on top of PortAudio. */
    err = OpenAudioStream( &aStream, SAMPLE_RATE, SAMPLE_TYPE,
                           (PABLIO_READ_WRITE | PABLIO_STEREO) );
    if( err != paNoError ) goto error;

    /* Process samples in the foreground. */
    for( i=0; i<(NUM_SECONDS * SAMPLE_RATE); i += FRAMES_PER_BLOCK )
    {
        /* Read one block of data into sample array from audio input. */
        ReadAudioStream( aStream, samples, FRAMES_PER_BLOCK );
        /* Write that same block of data to output. */
        WriteAudioStream( aStream, samples, FRAMES_PER_BLOCK );
    }

    CloseAudioStream( aStream );

    printf("Full duplex sound 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 ) );
    return -1;
}
1	/*
2	* $Id: test_rw.c 1083 2006-08-23 07:30:49Z rossb $
3	* test_rw.c
4	* Read input from one stream and write it to another.
5	*
6	* Author: Phil Burk, http://www.softsynth.com/portaudio/
7	*
8	* This program uses PABLIO, the Portable Audio Blocking I/O Library.
9	* PABLIO is built on top of PortAudio, the Portable Audio Library.
10	* For more information see: http://www.portaudio.com
11	* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
12	*
13	* Permission is hereby granted, free of charge, to any person obtaining
14	* a copy of this software and associated documentation files
15	* (the "Software"), to deal in the Software without restriction,
16	* including without limitation the rights to use, copy, modify, merge,
17	* publish, distribute, sublicense, and/or sell copies of the Software,
18	* and to permit persons to whom the Software is furnished to do so,
19	* subject to the following conditions:
20	*
21	* The above copyright notice and this permission notice shall be
22	* included in all copies or substantial portions of the Software.
23	*
24	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
27	* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
28	* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
29	* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30	* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31	*/
32
33	/*
34	* The text above constitutes the entire PortAudio license; however,
35	* the PortAudio community also makes the following non-binding requests:
36	*
37	* Any person wishing to distribute modifications to the Software is
38	* requested to send the modifications to the original developer so that
39	* they can be incorporated into the canonical version. It is also
40	* requested that these non-binding requests be included along with the
41	* license above.
42	*/
43
44	#include <stdio.h>
45	#include <stdlib.h>
46	#include "pablio.h"
47
48	/*
49	** Note that many of the older ISA sound cards on PCs do NOT support
50	** full duplex audio (simultaneous record and playback).
51	** And some only support full duplex at lower sample rates.
52	*/
53	#define SAMPLE_RATE (44100)
54	#define NUM_SECONDS (5)
55	#define SAMPLES_PER_FRAME (2)
56	#define FRAMES_PER_BLOCK (64)
57
58	/* Select whether we will use floats or shorts. */
59	#if 1
60	#define SAMPLE_TYPE paFloat32
61	typedef float SAMPLE;
62	#else
63	#define SAMPLE_TYPE paInt16
64	typedef short SAMPLE;
65	#endif
66
67	/*******************************************************************/
68	int main(void);
69	int main(void)
70	{
71	int i;
72	SAMPLE samples[SAMPLES_PER_FRAME * FRAMES_PER_BLOCK];
73	PaError err;
74	PABLIO_Stream *aStream;
75
76	printf("Full duplex sound test using PortAudio and RingBuffers\n");
77	fflush(stdout);
78
79	/* Open simplified blocking I/O layer on top of PortAudio. */
80	err = OpenAudioStream( &aStream, SAMPLE_RATE, SAMPLE_TYPE,
81	(PABLIO_READ_WRITE \| PABLIO_STEREO) );
82	if( err != paNoError ) goto error;
83
84	/* Process samples in the foreground. */
85	for( i=0; i<(NUM_SECONDS * SAMPLE_RATE); i += FRAMES_PER_BLOCK )
86	{
87	/* Read one block of data into sample array from audio input. */
88	ReadAudioStream( aStream, samples, FRAMES_PER_BLOCK );
89	/* Write that same block of data to output. */
90	WriteAudioStream( aStream, samples, FRAMES_PER_BLOCK );
91	}
92
93	CloseAudioStream( aStream );
94
95	printf("Full duplex sound test complete.\n" );
96	fflush(stdout);
97	return 0;
98
99	error:
100	Pa_Terminate();
101	fprintf( stderr, "An error occured while using the portaudio stream\n" );
102	fprintf( stderr, "Error number: %d\n", err );
103	fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
104	return -1;
105	}