src/tests/mcalign-test.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
   6   published by the Free Software Foundation; either version 2.1 of the
   7   License, 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   Lesser General Public License for more details.
  13
  14   You should have received a copy of the GNU Lesser General Public
  15   License 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 <assert.h>
  25 #include <unistd.h>
  26 #include <sys/types.h>
  27 #include <errno.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <time.h>
  31
  32 #include <pulsecore/core-util.h>
  33 #include <pulsecore/mcalign.h>
  34
  35 /* A simple program for testing pa_mcalign */
  36
  37 int main(int argc, char *argv[]) {
  38     pa_mempool *p;
  39     pa_mcalign *a;
  40     pa_memchunk c;
  41
  42     p = pa_mempool_new(FALSE, 0);
  43
  44     a = pa_mcalign_new(11);
  45
  46     pa_memchunk_reset(&c);
  47
  48     srand((unsigned) time(NULL));
  49
  50     for (;;) {
  51         ssize_t r;
  52         size_t l;
  53
  54         if (!c.memblock) {
  55             c.memblock = pa_memblock_new(p, 2048);
  56             c.index = c.length = 0;
  57         }
  58
  59         assert(c.index < pa_memblock_get_length(c.memblock));
  60
  61         l = pa_memblock_get_length(c.memblock) - c.index;
  62
  63         l = l <= 1 ? l : (size_t) rand() % (l-1) +1;
  64
  65         p = pa_memblock_acquire(c.memblock);
  66
  67         if ((r = read(STDIN_FILENO, (uint8_t*) p + c.index, l)) <= 0) {
  68             pa_memblock_release(c.memblock);
  69             fprintf(stderr, "read() failed: %s\n", r < 0 ? strerror(errno) : "EOF");
  70             break;
  71         }
  72
  73         pa_memblock_release(c.memblock);
  74
  75         c.length = (size_t) r;
  76         pa_mcalign_push(a, &c);
  77         fprintf(stderr, "Read %ld bytes\n", (long)r);
  78
  79         c.index += (size_t) r;
  80
  81         if (c.index >= pa_memblock_get_length(c.memblock)) {
  82             pa_memblock_unref(c.memblock);
  83             pa_memchunk_reset(&c);
  84         }
  85
  86         for (;;) {
  87             pa_memchunk t;
  88
  89             if (pa_mcalign_pop(a, &t) < 0)
  90                 break;
  91
  92             p = pa_memblock_acquire(t.memblock);
  93             pa_loop_write(STDOUT_FILENO, (uint8_t*) p + t.index, t.length, NULL);
  94             pa_memblock_release(t.memblock);
  95             fprintf(stderr, "Wrote %lu bytes.\n", (unsigned long) t.length);
  96
  97             pa_memblock_unref(t.memblock);
  98         }
  99     }
 100
 101     pa_mcalign_free(a);
 102
 103     if (c.memblock)
 104         pa_memblock_unref(c.memblock);
 105
 106     pa_mempool_free(p);
 107
 108     return 0;
 109 }