4 This file is part of PulseAudio.
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.
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.
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
40 #include <pulse/pulseaudio.h>
41 #include <pulse/mainloop.h>
43 static pa_context *context = NULL;
44 static pa_stream *stream = NULL;
45 static pa_mainloop_api *mainloop_api = NULL;
47 static void stream_write_cb(pa_stream *p, size_t length, void *userdata) {
49 /* Just some silence */
50 pa_stream_write(p, pa_xmalloc0(length), length, pa_xfree, 0, PA_SEEK_RELATIVE);
53 /* This is called whenever the context status changes */
54 static void context_state_callback(pa_context *c, void *userdata) {
57 switch (pa_context_get_state(c)) {
58 case PA_CONTEXT_CONNECTING:
59 case PA_CONTEXT_AUTHORIZING:
60 case PA_CONTEXT_SETTING_NAME:
63 case PA_CONTEXT_READY: {
65 static const pa_sample_spec ss = {
66 .format = PA_SAMPLE_S16LE,
71 fprintf(stderr, "Connection established.\n");
73 stream = pa_stream_new(c, "interpol-test", &ss, NULL);
76 pa_stream_connect_playback(stream, NULL, NULL, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL);
77 pa_stream_set_write_callback(stream, stream_write_cb, NULL);
82 case PA_CONTEXT_TERMINATED:
85 case PA_CONTEXT_FAILED:
87 fprintf(stderr, "Context error: %s\n", pa_strerror(pa_context_errno(c)));
92 int main(int argc, char *argv[]) {
93 pa_threaded_mainloop* m = NULL;
95 struct timeval start, last_info = { 0, 0 };
96 pa_usec_t old_t = 0, old_rtc = 0;
98 /* Set up a new main loop */
99 m = pa_threaded_mainloop_new();
102 mainloop_api = pa_threaded_mainloop_get_api(m);
104 context = pa_context_new(mainloop_api, argv[0]);
107 pa_context_set_state_callback(context, context_state_callback, NULL);
109 r = pa_context_connect(context, NULL, 0, NULL);
112 pa_gettimeofday(&start);
114 pa_threaded_mainloop_start(m);
116 for (k = 0; k < 5000; k++) {
117 int success = 0, changed = 0;
119 struct timeval now, tv;
121 pa_threaded_mainloop_lock(m);
124 const pa_timing_info *info;
126 if (pa_stream_get_time(stream, &t) >= 0)
129 if ((info = pa_stream_get_timing_info(stream)))
130 if (last_info.tv_usec != info->timestamp.tv_usec || last_info.tv_sec != info->timestamp.tv_sec) {
132 last_info = info->timestamp;
136 pa_threaded_mainloop_unlock(m);
139 pa_gettimeofday(&now);
141 rtc = pa_timeval_diff(&now, &start);
142 printf("%i\t%llu\t%llu\t%llu\t%llu\t%u\n", k, rtc, t, rtc-old_rtc, t-old_t, changed);
147 /* Spin loop, ugly but normal usleep() is just too badly grained */
150 while (pa_timeval_diff(pa_gettimeofday(&now), &tv) < 1000)
151 #ifdef HAVE_PTHREAD_YIELD
153 #elif defined(OS_IS_WIN32)
161 pa_threaded_mainloop_stop(m);
164 pa_stream_disconnect(stream);
165 pa_stream_unref(stream);
169 pa_context_disconnect(context);
170 pa_context_unref(context);
174 pa_threaded_mainloop_free(m);