code.delx.au - pulseaudio/blob - src/tests/interpol-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 <signal.h>
  27 #include <string.h>
  28 #include <errno.h>
  29 #include <unistd.h>
  30 #include <assert.h>
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <getopt.h>
  34 #include <math.h>
  35
  36 #include <pulse/pulseaudio.h>
  37 #include <pulse/mainloop.h>
  38
  39 #include <pulsecore/thread.h>
  40
  41 static pa_context *context = NULL;
  42 static pa_stream *stream = NULL;
  43 static pa_mainloop_api *mainloop_api = NULL;
  44
  45 static void stream_write_cb(pa_stream *p, size_t nbytes, void *userdata) {
  46     /* Just some silence */
  47     pa_stream_write(p, pa_xmalloc0(nbytes), nbytes, pa_xfree, 0, PA_SEEK_RELATIVE);
  48 }
  49
  50 /* This is called whenever the context status changes */
  51 static void context_state_callback(pa_context *c, void *userdata) {
  52     assert(c);
  53
  54     switch (pa_context_get_state(c)) {
  55         case PA_CONTEXT_CONNECTING:
  56         case PA_CONTEXT_AUTHORIZING:
  57         case PA_CONTEXT_SETTING_NAME:
  58             break;
  59
  60         case PA_CONTEXT_READY: {
  61
  62             static const pa_sample_spec ss = {
  63                 .format = PA_SAMPLE_S16LE,
  64                 .rate = 44100,
  65                 .channels = 2
  66             };
  67
  68             fprintf(stderr, "Connection established.\n");
  69
  70             stream = pa_stream_new(c, "interpol-test", &ss, NULL);
  71             assert(stream);
  72
  73             pa_stream_connect_playback(stream, NULL, NULL, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL);
  74             pa_stream_set_write_callback(stream, stream_write_cb, NULL);
  75
  76             break;
  77         }
  78
  79         case PA_CONTEXT_TERMINATED:
  80             break;
  81
  82         case PA_CONTEXT_FAILED:
  83         default:
  84             fprintf(stderr, "Context error: %s\n", pa_strerror(pa_context_errno(c)));
  85             abort();
  86     }
  87 }
  88
  89 int main(int argc, char *argv[]) {
  90     pa_threaded_mainloop* m = NULL;
  91     int k, r;
  92     struct timeval start, last_info = { 0, 0 };
  93     pa_usec_t old_t = 0, old_rtc = 0;
  94
  95     /* Set up a new main loop */
  96     m = pa_threaded_mainloop_new();
  97     assert(m);
  98
  99     mainloop_api = pa_threaded_mainloop_get_api(m);
 100
 101     context = pa_context_new(mainloop_api, argv[0]);
 102     assert(context);
 103
 104     pa_context_set_state_callback(context, context_state_callback, NULL);
 105
 106     r = pa_context_connect(context, NULL, 0, NULL);
 107     assert(r >= 0);
 108
 109     pa_gettimeofday(&start);
 110
 111     pa_threaded_mainloop_start(m);
 112
 113     for (k = 0; k < 5000; k++) {
 114         pa_bool_t success = FALSE, changed = FALSE;
 115         pa_usec_t t, rtc;
 116         struct timeval now, tv;
 117         pa_bool_t playing = FALSE;
 118
 119         pa_threaded_mainloop_lock(m);
 120
 121         if (stream) {
 122             const pa_timing_info *info;
 123
 124             if (pa_stream_get_time(stream, &t) >= 0)
 125                 success = TRUE;
 126
 127             if ((info = pa_stream_get_timing_info(stream))) {
 128                 if (memcmp(&last_info, &info->timestamp, sizeof(struct timeval))) {
 129                     changed = TRUE;
 130                     last_info = info->timestamp;
 131                 }
 132                 if (info->playing)
 133                     playing = TRUE;
 134             }
 135         }
 136
 137         pa_threaded_mainloop_unlock(m);
 138
 139         pa_gettimeofday(&now);
 140
 141         if (success) {
 142             rtc = pa_timeval_diff(&now, &start);
 143             printf("%i\t%llu\t%llu\t%llu\t%llu\t%u\t%u\n", k, (unsigned long long) rtc, (unsigned long long) t, (unsigned long long) (rtc-old_rtc), (unsigned long long) (t-old_t), changed, playing);
 144             fflush(stdout);
 145             old_t = t;
 146             old_rtc = rtc;
 147         }
 148
 149         /* Spin loop, ugly but normal usleep() is just too badly grained */
 150
 151         tv = now;
 152         while (pa_timeval_diff(pa_gettimeofday(&now), &tv) < 1000)
 153             pa_thread_yield();
 154     }
 155
 156     if (m)
 157         pa_threaded_mainloop_stop(m);
 158
 159     if (stream) {
 160         pa_stream_disconnect(stream);
 161         pa_stream_unref(stream);
 162     }
 163
 164     if (context) {
 165         pa_context_disconnect(context);
 166         pa_context_unref(context);
 167     }
 168
 169     if (m)
 170         pa_threaded_mainloop_free(m);
 171
 172     return 0;
 173 }