code.delx.au - pulseaudio/blob - src/tests/smoother-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 published
   8   by the Free Software Foundation; either version 2 of the License,
   9   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   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   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 <stdio.h>
  27 #include <stdlib.h>
  28
  29 #include <pulsecore/time-smoother.h>
  30 #include <pulse/timeval.h>
  31
  32 int main(int argc, char*argv[]) {
  33     pa_usec_t x;
  34     unsigned u = 0;
  35     pa_smoother *s;
  36     int m;
  37
  38 /*     unsigned msec[] = { */
  39 /*         200, 200, */
  40 /*         300, 320, */
  41 /*         400, 400, */
  42 /*         500, 480, */
  43 /*         0, 0 */
  44 /*     }; */
  45
  46     int msec[200];
  47
  48     srand(0);
  49
  50     for (m = 0, u = 0; u < PA_ELEMENTSOF(msec)-2; u+= 2) {
  51
  52         msec[u] = m+1;
  53         msec[u+1] = m + rand() % 2000 - 1000;
  54
  55         m += rand() % 100;
  56
  57         if (msec[u+1] < 0)
  58             msec[u+1] = 0;
  59     }
  60
  61     msec[PA_ELEMENTSOF(msec)-2] = 0;
  62     msec[PA_ELEMENTSOF(msec)-1] = 0;
  63
  64     s = pa_smoother_new(1000*PA_USEC_PER_MSEC, 2000*PA_USEC_PER_MSEC, TRUE);
  65
  66     for (x = 0, u = 0; x < PA_USEC_PER_SEC * 10; x += PA_USEC_PER_MSEC) {
  67
  68         while (msec[u] > 0 && (pa_usec_t) msec[u]*PA_USEC_PER_MSEC < x) {
  69             pa_smoother_put(s, msec[u]*PA_USEC_PER_MSEC, msec[u+1]*PA_USEC_PER_MSEC);
  70             printf("%i\t\t%i\n", msec[u],  msec[u+1]);
  71             u += 2;
  72         }
  73
  74         printf("%llu\t%llu\n", (unsigned long long) (x/PA_USEC_PER_MSEC), (unsigned long long) (pa_smoother_get(s, x)/PA_USEC_PER_MSEC));
  75     }
  76
  77     pa_smoother_free(s);
  78
  79     return 0;
  80 }