code.delx.au - pulseaudio/blob - src/tests/smoother-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 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 <stdlib.h>
  26
  27 #include <pulsecore/time-smoother.h>
  28 #include <pulse/timeval.h>
  29
  30 int main(int argc, char*argv[]) {
  31     pa_usec_t x;
  32     unsigned u = 0;
  33     pa_smoother *s;
  34     int m;
  35
  36 /*     unsigned msec[] = { */
  37 /*         200, 200, */
  38 /*         300, 320, */
  39 /*         400, 400, */
  40 /*         500, 480, */
  41 /*         0, 0 */
  42 /*     }; */
  43
  44     int msec[200];
  45
  46     srand(0);
  47
  48     for (m = 0, u = 0; u < PA_ELEMENTSOF(msec); u+= 2) {
  49
  50         msec[u] = m+1 + (rand() % 100) - 50;
  51         msec[u+1] = m + (rand() % 2000) - 1000;
  52
  53         m += rand() % 100;
  54
  55         if (msec[u] < 0)
  56             msec[u] = 0;
  57
  58         if (msec[u+1] < 0)
  59             msec[u+1] = 0;
  60     }
  61
  62     s = pa_smoother_new(700*PA_USEC_PER_MSEC, 2000*PA_USEC_PER_MSEC, TRUE, 6);
  63
  64     for (x = 0, u = 0; x < PA_USEC_PER_SEC * 10; x += PA_USEC_PER_MSEC) {
  65
  66         while (u < PA_ELEMENTSOF(msec) && (pa_usec_t) msec[u]*PA_USEC_PER_MSEC < x) {
  67             pa_smoother_put(s, (pa_usec_t) msec[u] * PA_USEC_PER_MSEC, (pa_usec_t) msec[u+1] * PA_USEC_PER_MSEC);
  68             printf("%i\t\t%i\n", msec[u],  msec[u+1]);
  69             u += 2;
  70         }
  71
  72         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));
  73     }
  74
  75     pa_smoother_free(s);
  76
  77     return 0;
  78 }