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 #include <pulse/gccmacro.h>
  33
  34 #define BUFSIZE 1024
  35
  36 int main(int argc, char*argv[]) {
  37
  38     /* The Sample format to use */
  39     static const pa_sample_spec ss = {
  40         .format = PA_SAMPLE_S16LE,
  41         .rate = 44100,
  42         .channels = 2
  43     };
  44
  45     pa_simple *s = NULL;
  46     int ret = 1;
  47     int error;
  48
  49     /* replace STDIN with the specified file if needed */
  50     if (argc > 1) {
  51         int fd;
  52
  53         if ((fd = open(argv[1], O_RDONLY)) < 0) {
  54             fprintf(stderr, __FILE__": open() failed: %s\n", strerror(errno));
  55             goto finish;
  56         }
  57
  58         if (dup2(fd, STDIN_FILENO) < 0) {
  59             fprintf(stderr, __FILE__": dup2() failed: %s\n", strerror(errno));
  60             goto finish;
  61         }
  62
  63         close(fd);
  64     }
  65
  66     /* Create a new playback stream */
  67     if (!(s = pa_simple_new(NULL, argv[0], PA_STREAM_PLAYBACK, NULL, "playback", &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         ssize_t r;
  75
  76 #if 0
  77         pa_usec_t latency;
  78
  79         if ((latency = pa_simple_get_latency(s, &error)) == (pa_usec_t) -1) {
  80             fprintf(stderr, __FILE__": pa_simple_get_latency() failed: %s\n", pa_strerror(error));
  81             goto finish;
  82         }
  83
  84         fprintf(stderr, "%0.0f usec    \r", (float)latency);
  85 #endif
  86
  87         /* Read some data ... */
  88         if ((r = read(STDIN_FILENO, buf, sizeof(buf))) <= 0) {
  89             if (r == 0) /* EOF */
  90                 break;
  91
  92             fprintf(stderr, __FILE__": read() failed: %s\n", strerror(errno));
  93             goto finish;
  94         }
  95
  96         /* ... and play it */
  97         if (pa_simple_write(s, buf, (size_t) r, &error) < 0) {
  98             fprintf(stderr, __FILE__": pa_simple_write() failed: %s\n", pa_strerror(error));
  99             goto finish;
 100         }
 101     }
 102
 103     /* Make sure that every single sample was played */
 104     if (pa_simple_drain(s, &error) < 0) {
 105         fprintf(stderr, __FILE__": pa_simple_drain() failed: %s\n", pa_strerror(error));
 106         goto finish;
 107     }
 108
 109     ret = 0;
 110
 111 finish:
 112
 113     if (s)
 114         pa_simple_free(s);
 115
 116     return ret;
 117 }