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 <pulse/gccmacro.h>
  33
  34 #include <pulsecore/core-util.h>
  35 #include <pulsecore/mcalign.h>
  36
  37 /* A simple program for testing pa_mcalign */
  38
  39 int main(int argc, char *argv[]) {
  40     pa_mempool *p;
  41     pa_mcalign *a;
  42     pa_memchunk c;
  43
  44     p = pa_mempool_new(FALSE, 0);
  45
  46     a = pa_mcalign_new(11);
  47
  48     pa_memchunk_reset(&c);
  49
  50     srand((unsigned) time(NULL));
  51
  52     for (;;) {
  53         ssize_t r;
  54         size_t l;
  55
  56         if (!c.memblock) {
  57             c.memblock = pa_memblock_new(p, 2048);
  58             c.index = c.length = 0;
  59         }
  60
  61         assert(c.index < pa_memblock_get_length(c.memblock));
  62
  63         l = pa_memblock_get_length(c.memblock) - c.index;
  64
  65         l = l <= 1 ? l : (size_t) rand() % (l-1) +1;
  66
  67         p = pa_memblock_acquire(c.memblock);
  68
  69         if ((r = read(STDIN_FILENO, (uint8_t*) p + c.index, l)) <= 0) {
  70             pa_memblock_release(c.memblock);
  71             fprintf(stderr, "read() failed: %s\n", r < 0 ? strerror(errno) : "EOF");
  72             break;
  73         }
  74
  75         pa_memblock_release(c.memblock);
  76
  77         c.length = (size_t) r;
  78         pa_mcalign_push(a, &c);
  79         fprintf(stderr, "Read %ld bytes\n", (long)r);
  80
  81         c.index += (size_t) r;
  82
  83         if (c.index >= pa_memblock_get_length(c.memblock)) {
  84             pa_memblock_unref(c.memblock);
  85             pa_memchunk_reset(&c);
  86         }
  87
  88         for (;;) {
  89             pa_memchunk t;
  90
  91             if (pa_mcalign_pop(a, &t) < 0)
  92                 break;
  93
  94             p = pa_memblock_acquire(t.memblock);
  95             pa_loop_write(STDOUT_FILENO, (uint8_t*) p + t.index, t.length, NULL);
  96             pa_memblock_release(t.memblock);
  97             fprintf(stderr, "Wrote %lu bytes.\n", (unsigned long) t.length);
  98
  99             pa_memblock_unref(t.memblock);
 100         }
 101     }
 102
 103     pa_mcalign_free(a);
 104
 105     if (c.memblock)
 106         pa_memblock_unref(c.memblock);
 107
 108     pa_mempool_free(p);
 109
 110     return 0;
 111 }