src/tests/parec-simple.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdio.h>
  27 #include <unistd.h>
  28 #include <string.h>
  29 #include <errno.h>
  30
  31 #include <pulse/simple.h>
  32 #include <pulse/error.h>
  33 #include <pulsecore/gccmacro.h>
  34
  35 #define BUFSIZE 1024
  36
  37 /* A simple routine calling UNIX write() in a loop */
  38 static ssize_t loop_write(int fd, const void*data, size_t size) {
  39     ssize_t ret = 0;
  40
  41     while (size > 0) {
  42         ssize_t r;
  43
  44         if ((r = write(fd, data, size)) < 0)
  45             return r;
  46
  47         if (r == 0)
  48             break;
  49
  50         ret += r;
  51         data = (const uint8_t*) data + r;
  52         size -= r;
  53     }
  54
  55     return ret;
  56 }
  57
  58 int main(PA_GCC_UNUSED int argc, char*argv[]) {
  59     /* The sample type to use */
  60     static const pa_sample_spec ss = {
  61         .format = PA_SAMPLE_S16LE,
  62         .rate = 44100,
  63         .channels = 2
  64     };
  65     pa_simple *s = NULL;
  66     int ret = 1;
  67     int error;
  68
  69     /* Create the recording stream */
  70     if (!(s = pa_simple_new(NULL, argv[0], PA_STREAM_RECORD, NULL, "record", &ss, NULL, NULL, &error))) {
  71         fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
  72         goto finish;
  73     }
  74
  75     for (;;) {
  76         uint8_t buf[BUFSIZE];
  77         ssize_t r;
  78
  79         /* Record some data ... */
  80         if (pa_simple_read(s, buf, sizeof(buf), &error) < 0) {
  81             fprintf(stderr, __FILE__": pa_simple_read() failed: %s\n", pa_strerror(error));
  82             goto finish;
  83         }
  84
  85         /* And write it to STDOUT */
  86         if ((r = loop_write(STDOUT_FILENO, buf, sizeof(buf))) <= 0) {
  87             fprintf(stderr, __FILE__": write() failed: %s\n", strerror(errno));
  88             goto finish;
  89         }
  90     }
  91
  92     ret = 0;
  93
  94 finish:
  95
  96     if (s)
  97         pa_simple_free(s);
  98
  99     return ret;
 100 }