code.delx.au - pulseaudio/blob - src/tests/pacat-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 #include <fcntl.h>
  29
  30 #include <pulse/simple.h>
  31 #include <pulse/error.h>
  32
  33 #define BUFSIZE 1024
  34
  35 int main(int argc, char*argv[]) {
  36
  37     /* The Sample format to use */
  38     static const pa_sample_spec ss = {
  39         .format = PA_SAMPLE_S16LE,
  40         .rate = 44100,
  41         .channels = 2
  42     };
  43
  44     pa_simple *s = NULL;
  45     int ret = 1;
  46     int error;
  47
  48     /* replace STDIN with the specified file if needed */
  49     if (argc > 1) {
  50         int fd;
  51
  52         if ((fd = open(argv[1], O_RDONLY)) < 0) {
  53             fprintf(stderr, __FILE__": open() failed: %s\n", strerror(errno));
  54             goto finish;
  55         }
  56
  57         if (dup2(fd, STDIN_FILENO) < 0) {
  58             fprintf(stderr, __FILE__": dup2() failed: %s\n", strerror(errno));
  59             goto finish;
  60         }
  61
  62         close(fd);
  63     }
  64
  65     /* Create a new playback stream */
  66     if (!(s = pa_simple_new(NULL, argv[0], PA_STREAM_PLAYBACK, NULL, "playback", &ss, NULL, 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 0
  76         pa_usec_t latency;
  77
  78         if ((latency = pa_simple_get_latency(s, &error)) == (pa_usec_t) -1) {
  79             fprintf(stderr, __FILE__": pa_simple_get_latency() failed: %s\n", pa_strerror(error));
  80             goto finish;
  81         }
  82
  83         fprintf(stderr, "%0.0f usec    \r", (float)latency);
  84 #endif
  85
  86         /* Read some data ... */
  87         if ((r = read(STDIN_FILENO, buf, sizeof(buf))) <= 0) {
  88             if (r == 0) /* EOF */
  89                 break;
  90
  91             fprintf(stderr, __FILE__": read() failed: %s\n", strerror(errno));
  92             goto finish;
  93         }
  94
  95         /* ... and play it */
  96         if (pa_simple_write(s, buf, (size_t) r, &error) < 0) {
  97             fprintf(stderr, __FILE__": pa_simple_write() failed: %s\n", pa_strerror(error));
  98             goto finish;
  99         }
 100     }
 101
 102     /* Make sure that every single sample was played */
 103     if (pa_simple_drain(s, &error) < 0) {
 104         fprintf(stderr, __FILE__": pa_simple_drain() failed: %s\n", pa_strerror(error));
 105         goto finish;
 106     }
 107
 108     ret = 0;
 109
 110 finish:
 111
 112     if (s)
 113         pa_simple_free(s);
 114
 115     return ret;
 116 }