code.delx.au - pulseaudio/blob - src/tests/parec-simple.c

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