code.delx.au - pulseaudio/blob - polyp/pacat-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 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   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 Lesser 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 <polyp/polyplib-simple.h>
  32 #include <polyp/polyplib-error.h>
  33
  34 #define BUFSIZE 1024
  35
  36 int main(int argc, char*argv[]) {
  37
  38     /* The Sample format to use */
  39     static const struct pa_sample_spec ss = {
  40         .format = PA_SAMPLE_S16LE,
  41         .rate = 44100,
  42         .channels = 2
  43     };
  44
  45     struct pa_simple *s = NULL;
  46     int ret = 1;
  47     int error;
  48
  49     /* Create a new playback stream */
  50     if (!(s = pa_simple_new(NULL, argv[0], PA_STREAM_PLAYBACK, NULL, "playback", &ss, NULL, PA_VOLUME_NORM, &error))) {
  51         fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
  52         goto finish;
  53     }
  54
  55     for (;;) {
  56         uint8_t buf[BUFSIZE];
  57         ssize_t r;
  58
  59 #if 0
  60         pa_usec_t latency;
  61
  62         if ((latency = pa_simple_get_playback_latency(s, &error)) == (pa_usec_t) -1) {
  63             fprintf(stderr, __FILE__": pa_simple_get_playback_latency() failed: %s\n", pa_strerror(error));
  64             goto finish;
  65         }
  66
  67         fprintf(stderr, "%0.0f usec    \r", (float)latency);
  68 #endif
  69
  70         /* Read some data ... */
  71         if ((r = read(STDIN_FILENO, buf, sizeof(buf))) <= 0) {
  72             if (r == 0) /* EOF */
  73                 break;
  74
  75             fprintf(stderr, __FILE__": read() failed: %s\n", strerror(errno));
  76             goto finish;
  77         }
  78
  79         /* ... and play it */
  80         if (pa_simple_write(s, buf, r, &error) < 0) {
  81             fprintf(stderr, __FILE__": pa_simple_write() failed: %s\n", pa_strerror(error));
  82             goto finish;
  83         }
  84     }
  85
  86     /* Make sure that every single sample was played */
  87     if (pa_simple_drain(s, &error) < 0) {
  88         fprintf(stderr, __FILE__": pa_simple_drain() failed: %s\n", pa_strerror(error));
  89         goto finish;
  90     }
  91
  92     ret = 0;
  93
  94 finish:
  95
  96     if (s)
  97         pa_simple_free(s);
  98
  99     return ret;
 100 }