2 This file is part of PulseAudio.
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 of the License,
7 or (at your option) any later version.
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.
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
34 #include <pulse/pulseaudio.h>
35 #include <pulse/mainloop.h>
37 #include <pulsecore/thread.h>
39 static pa_context *context = NULL;
40 static pa_stream *stream = NULL;
41 static pa_mainloop_api *mainloop_api = NULL;
43 static void stream_write_cb(pa_stream *p, size_t nbytes, void *userdata) {
44 /* Just some silence */
45 pa_stream_write(p, pa_xmalloc0(nbytes), nbytes, pa_xfree, 0, PA_SEEK_RELATIVE);
48 /* This is called whenever the context status changes */
49 static void context_state_callback(pa_context *c, void *userdata) {
52 switch (pa_context_get_state(c)) {
53 case PA_CONTEXT_CONNECTING:
54 case PA_CONTEXT_AUTHORIZING:
55 case PA_CONTEXT_SETTING_NAME:
58 case PA_CONTEXT_READY: {
60 static const pa_sample_spec ss = {
61 .format = PA_SAMPLE_S16LE,
66 fprintf(stderr, "Connection established.\n");
68 stream = pa_stream_new(c, "interpol-test", &ss, NULL);
71 pa_stream_connect_playback(stream, NULL, NULL, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL);
72 pa_stream_set_write_callback(stream, stream_write_cb, NULL);
77 case PA_CONTEXT_TERMINATED:
80 case PA_CONTEXT_FAILED:
82 fprintf(stderr, "Context error: %s\n", pa_strerror(pa_context_errno(c)));
87 int main(int argc, char *argv[]) {
88 pa_threaded_mainloop* m = NULL;
90 struct timeval start, last_info = { 0, 0 };
91 pa_usec_t old_t = 0, old_rtc = 0;
93 /* Set up a new main loop */
94 m = pa_threaded_mainloop_new();
97 mainloop_api = pa_threaded_mainloop_get_api(m);
99 context = pa_context_new(mainloop_api, argv[0]);
102 pa_context_set_state_callback(context, context_state_callback, NULL);
104 r = pa_context_connect(context, NULL, 0, NULL);
107 pa_gettimeofday(&start);
109 pa_threaded_mainloop_start(m);
111 for (k = 0; k < 5000; k++) {
112 pa_bool_t success = FALSE, changed = FALSE;
114 struct timeval now, tv;
115 pa_bool_t playing = FALSE;
117 pa_threaded_mainloop_lock(m);
120 const pa_timing_info *info;
122 if (pa_stream_get_time(stream, &t) >= 0)
125 if ((info = pa_stream_get_timing_info(stream))) {
126 if (memcmp(&last_info, &info->timestamp, sizeof(struct timeval))) {
128 last_info = info->timestamp;
135 pa_threaded_mainloop_unlock(m);
137 pa_gettimeofday(&now);
140 rtc = pa_timeval_diff(&now, &start);
141 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);
147 /* Spin loop, ugly but normal usleep() is just too badly grained */
150 while (pa_timeval_diff(pa_gettimeofday(&now), &tv) < 1000)
155 pa_threaded_mainloop_stop(m);
158 pa_stream_disconnect(stream);
159 pa_stream_unref(stream);
163 pa_context_disconnect(context);
164 pa_context_unref(context);
168 pa_threaded_mainloop_free(m);