code.delx.au - pulseaudio/blob - polyp/parec-simple.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU 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   polypaudio 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 General Public License
  17   along with polypaudio; 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 "polyplib-simple.h"
  32 #include "polyplib-error.h"
  33
  34 #define BUFSIZE 1024
  35
  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 += r;
  50         size -= r;
  51     }
  52
  53     return ret;
  54 }
  55
  56 int main(int argc, char*argv[]) {
  57     static const struct pa_sample_spec ss = {
  58         .format = PA_SAMPLE_S16LE,
  59         .rate = 44100,
  60         .channels = 2
  61     };
  62     struct pa_simple *s = NULL;
  63     int ret = 1;
  64     int error;
  65
  66     if (!(s = pa_simple_new(NULL, argv[0], PA_STREAM_RECORD, NULL, "record", &ss, NULL, &error))) {
  67         fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
  68         goto finish;
  69     }
  70
  71     for (;;) {
  72         uint8_t buf[BUFSIZE];
  73         ssize_t r;
  74
  75         if (pa_simple_read(s, buf, sizeof(buf), &error) < 0) {
  76             fprintf(stderr, __FILE__": pa_simple_read() failed: %s\n", pa_strerror(error));
  77             goto finish;
  78         }
  79
  80         if ((r = loop_write(STDOUT_FILENO, buf, sizeof(buf))) <= 0) {
  81             fprintf(stderr, __FILE__": write() failed: %s\n", strerror(errno));
  82             goto finish;
  83         }
  84     }
  85
  86     ret = 0;
  87
  88 finish:
  89
  90     if (s)
  91         pa_simple_free(s);
  92
  93     return ret;
  94 }