code.delx.au - pulseaudio/blob - src/tests/mcalign-test.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as
   8   published by the Free Software Foundation; either version 2.1 of the
   9   License, or (at your option) any later version.
  10
  11   PulseAudio 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   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public
  17   License along with PulseAudio; 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 <assert.h>
  27 #include <unistd.h>
  28 #include <sys/types.h>
  29 #include <errno.h>
  30 #include <string.h>
  31 #include <stdlib.h>
  32 #include <time.h>
  33
  34 #include <pulsecore/core-util.h>
  35 #include <pulsecore/mcalign.h>
  36 #include <pulsecore/gccmacro.h>
  37
  38 /* A simple program for testing pa_mcalign */
  39
  40 int main(PA_GCC_UNUSED int argc, PA_GCC_UNUSED char *argv[]) {
  41     pa_mempool *p;
  42     pa_mcalign *a;
  43     pa_memchunk c;
  44
  45     p = pa_mempool_new(0);
  46
  47     a = pa_mcalign_new(11);
  48
  49     pa_memchunk_reset(&c);
  50
  51     srand(time(NULL));
  52
  53     for (;;) {
  54         ssize_t r;
  55         size_t l;
  56
  57         if (!c.memblock) {
  58             c.memblock = pa_memblock_new(p, 2048);
  59             c.index = c.length = 0;
  60         }
  61
  62         assert(c.index < pa_memblock_get_length(c.memblock));
  63
  64         l = pa_memblock_get_length(c.memblock) - c.index;
  65
  66         l = l <= 1 ? l : rand() % (l-1) +1 ;
  67
  68         p = pa_memblock_acquire(c.memblock);
  69
  70         if ((r = read(STDIN_FILENO, (uint8_t*) p + c.index, l)) <= 0) {
  71             pa_memblock_release(c.memblock);
  72             fprintf(stderr, "read() failed: %s\n", r < 0 ? strerror(errno) : "EOF");
  73             break;
  74         }
  75
  76         pa_memblock_release(c.memblock);
  77
  78         c.length = r;
  79         pa_mcalign_push(a, &c);
  80         fprintf(stderr, "Read %ld bytes\n", (long)r);
  81
  82         c.index += r;
  83
  84         if (c.index >= pa_memblock_get_length(c.memblock)) {
  85             pa_memblock_unref(c.memblock);
  86             pa_memchunk_reset(&c);
  87         }
  88
  89         for (;;) {
  90             pa_memchunk t;
  91
  92             if (pa_mcalign_pop(a, &t) < 0)
  93                 break;
  94
  95             p = pa_memblock_acquire(t.memblock);
  96             pa_loop_write(STDOUT_FILENO, (uint8_t*) p + t.index, t.length, NULL);
  97             pa_memblock_release(t.memblock);
  98             fprintf(stderr, "Wrote %lu bytes.\n", (unsigned long) t.length);
  99
 100             pa_memblock_unref(t.memblock);
 101         }
 102     }
 103
 104     pa_mcalign_free(a);
 105
 106     if (c.memblock)
 107         pa_memblock_unref(c.memblock);
 108
 109     pa_mempool_free(p);
 110
 111     return 0;
 112 }