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 2.1 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
  32 #define BUFSIZE 1024
  33
  34 /* A simple routine calling UNIX write() in a loop */
  35 static ssize_t loop_write(int fd, const void*data, size_t size) {
  36     ssize_t ret = 0;
  37
  38     while (size > 0) {
  39         ssize_t r;
  40
  41         if ((r = write(fd, data, size)) < 0)
  42             return r;
  43
  44         if (r == 0)
  45             break;
  46
  47         ret += r;
  48         data = (const uint8_t*) data + r;
  49         size -= (size_t) r;
  50     }
  51
  52     return ret;
  53 }
  54
  55 int main(int argc, char*argv[]) {
  56     /* The sample type to use */
  57     static const pa_sample_spec ss = {
  58         .format = PA_SAMPLE_S16LE,
  59         .rate = 44100,
  60         .channels = 2
  61     };
  62     pa_simple *s = NULL;
  63     int ret = 1;
  64     int error;
  65
  66     /* Create the recording stream */
  67     if (!(s = pa_simple_new(NULL, argv[0], PA_STREAM_RECORD, NULL, "record", &ss, NULL, NULL, &error))) {
  68         fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
  69         goto finish;
  70     }
  71
  72     for (;;) {
  73         uint8_t buf[BUFSIZE];
  74
  75         /* Record some data ... */
  76         if (pa_simple_read(s, buf, sizeof(buf), &error) < 0) {
  77             fprintf(stderr, __FILE__": pa_simple_read() failed: %s\n", pa_strerror(error));
  78             goto finish;
  79         }
  80
  81         /* And write it to STDOUT */
  82         if (loop_write(STDOUT_FILENO, buf, sizeof(buf)) != sizeof(buf)) {
  83             fprintf(stderr, __FILE__": write() failed: %s\n", strerror(errno));
  84             goto finish;
  85         }
  86     }
  87
  88     ret = 0;
  89
  90 finish:
  91
  92     if (s)
  93         pa_simple_free(s);
  94
  95     return ret;
  96 }