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
36 #include <pulse/pulseaudio.h>
37 #include <pulse/mainloop.h>
39 #include <pulsecore/thread.h>
41 static pa_context *context = NULL;
42 static pa_stream *stream = NULL;
43 static pa_mainloop_api *mainloop_api = NULL;
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);
50 /* This is called whenever the context status changes */
51 static void context_state_callback(pa_context *c, void *userdata) {
54 switch (pa_context_get_state(c)) {
55 case PA_CONTEXT_CONNECTING:
56 case PA_CONTEXT_AUTHORIZING:
57 case PA_CONTEXT_SETTING_NAME:
60 case PA_CONTEXT_READY: {
62 static const pa_sample_spec ss = {
63 .format = PA_SAMPLE_S16LE,
68 fprintf(stderr, "Connection established.\n");
70 stream = pa_stream_new(c, "interpol-test", &ss, NULL);
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);
79 case PA_CONTEXT_TERMINATED:
82 case PA_CONTEXT_FAILED:
84 fprintf(stderr, "Context error: %s\n", pa_strerror(pa_context_errno(c)));
89 int main(int argc, char *argv[]) {
90 pa_threaded_mainloop* m = NULL;
92 struct timeval start, last_info = { 0, 0 };
93 pa_usec_t old_t = 0, old_rtc = 0;
95 /* Set up a new main loop */
96 m = pa_threaded_mainloop_new();
99 mainloop_api = pa_threaded_mainloop_get_api(m);
101 context = pa_context_new(mainloop_api, argv[0]);
104 pa_context_set_state_callback(context, context_state_callback, NULL);
106 r = pa_context_connect(context, NULL, 0, NULL);
109 pa_gettimeofday(&start);
111 pa_threaded_mainloop_start(m);
113 for (k = 0; k < 5000; k++) {
114 pa_bool_t success = FALSE, changed = FALSE;
116 struct timeval now, tv;
117 pa_bool_t playing = FALSE;
119 pa_threaded_mainloop_lock(m);
122 const pa_timing_info *info;
124 if (pa_stream_get_time(stream, &t) >= 0)
127 if ((info = pa_stream_get_timing_info(stream))) {
128 if (memcmp(&last_info, &info->timestamp, sizeof(struct timeval))) {
130 last_info = info->timestamp;
137 pa_threaded_mainloop_unlock(m);
139 pa_gettimeofday(&now);
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);
149 /* Spin loop, ugly but normal usleep() is just too badly grained */
152 while (pa_timeval_diff(pa_gettimeofday(&now), &tv) < 1000)
157 pa_threaded_mainloop_stop(m);
160 pa_stream_disconnect(stream);
161 pa_stream_unref(stream);
165 pa_context_disconnect(context);
166 pa_context_unref(context);
170 pa_threaded_mainloop_free(m);