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;
42 static pa_bool_t playback = TRUE;
44 static void stream_write_cb(pa_stream *p, size_t nbytes, void *userdata) {
45 /* Just some silence */
46 pa_assert_se(pa_stream_write(p, pa_xmalloc0(nbytes), nbytes, pa_xfree, 0, PA_SEEK_RELATIVE) == 0);
49 static void stream_read_cb(pa_stream *p, size_t nbytes, void *userdata) {
50 /* We don't care, just drop the data */
52 while (pa_stream_readable_size(p) > 0) {
56 pa_assert_se(pa_stream_peek(p, &d, &b) == 0);
57 pa_assert_se(pa_stream_drop(p) == 0);
61 /* This is called whenever the context status changes */
62 static void context_state_callback(pa_context *c, void *userdata) {
65 switch (pa_context_get_state(c)) {
66 case PA_CONTEXT_CONNECTING:
67 case PA_CONTEXT_AUTHORIZING:
68 case PA_CONTEXT_SETTING_NAME:
71 case PA_CONTEXT_READY: {
73 static const pa_sample_spec ss = {
74 .format = PA_SAMPLE_S16LE,
79 fprintf(stderr, "Connection established.\n");
81 stream = pa_stream_new(c, "interpol-test", &ss, NULL);
85 pa_assert_se(pa_stream_connect_playback(stream, NULL, NULL, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL) == 0);
86 pa_stream_set_write_callback(stream, stream_write_cb, NULL);
88 pa_assert_se(pa_stream_connect_record(stream, NULL, NULL, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE) == 0);
89 pa_stream_set_read_callback(stream, stream_read_cb, NULL);
95 case PA_CONTEXT_TERMINATED:
98 case PA_CONTEXT_FAILED:
100 fprintf(stderr, "Context error: %s\n", pa_strerror(pa_context_errno(c)));
105 int main(int argc, char *argv[]) {
106 pa_threaded_mainloop* m = NULL;
108 struct timeval start, last_info = { 0, 0 };
109 pa_usec_t old_t = 0, old_rtc = 0;
111 playback = argc <= 1 || !pa_streq(argv[1], "-r");
113 /* Set up a new main loop */
114 m = pa_threaded_mainloop_new();
117 mainloop_api = pa_threaded_mainloop_get_api(m);
119 context = pa_context_new(mainloop_api, argv[0]);
122 pa_context_set_state_callback(context, context_state_callback, NULL);
124 r = pa_context_connect(context, NULL, 0, NULL);
127 pa_gettimeofday(&start);
129 pa_threaded_mainloop_start(m);
131 for (k = 0; k < 5000; k++) {
132 pa_bool_t success = FALSE, changed = FALSE;
134 struct timeval now, tv;
135 pa_bool_t playing = FALSE;
137 pa_threaded_mainloop_lock(m);
140 const pa_timing_info *info;
142 if (pa_stream_get_time(stream, &t) >= 0)
145 if ((info = pa_stream_get_timing_info(stream))) {
146 if (memcmp(&last_info, &info->timestamp, sizeof(struct timeval))) {
148 last_info = info->timestamp;
155 pa_threaded_mainloop_unlock(m);
157 pa_gettimeofday(&now);
160 rtc = pa_timeval_diff(&now, &start);
161 printf("%i\t%llu\t%llu\t%llu\t%llu\t%u\t%u\n", k,
162 (unsigned long long) rtc,
163 (unsigned long long) t,
164 (unsigned long long) (rtc-old_rtc),
165 (unsigned long long) (t-old_t),
174 /* Spin loop, ugly but normal usleep() is just too badly grained */
177 while (pa_timeval_diff(pa_gettimeofday(&now), &tv) < 1000)
182 pa_threaded_mainloop_stop(m);
185 pa_stream_disconnect(stream);
186 pa_stream_unref(stream);
190 pa_context_disconnect(context);
191 pa_context_unref(context);
195 pa_threaded_mainloop_free(m);