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 2.1 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>
42 static pa_context *context = NULL;
43 static pa_stream *stream = NULL;
44 static pa_mainloop_api *mainloop_api = NULL;
45 static pa_bool_t playback = TRUE;
47 static void stream_write_cb(pa_stream *p, size_t nbytes, void *userdata) {
48 /* Just some silence */
49 pa_assert_se(pa_stream_write(p, pa_xmalloc0(nbytes), nbytes, pa_xfree, 0, PA_SEEK_RELATIVE) == 0);
52 static void stream_read_cb(pa_stream *p, size_t nbytes, void *userdata) {
53 /* We don't care, just drop the data */
55 while (pa_stream_readable_size(p) > 0) {
59 pa_assert_se(pa_stream_peek(p, &d, &b) == 0);
60 pa_assert_se(pa_stream_drop(p) == 0);
64 static void stream_latency_cb(pa_stream *p, void *userdata) {
68 o = pa_stream_update_timing_info(p, NULL, NULL);
69 pa_operation_unref(o);
73 /* This is called whenever the context status changes */
74 static void context_state_callback(pa_context *c, void *userdata) {
77 switch (pa_context_get_state(c)) {
78 case PA_CONTEXT_CONNECTING:
79 case PA_CONTEXT_AUTHORIZING:
80 case PA_CONTEXT_SETTING_NAME:
83 case PA_CONTEXT_READY: {
84 pa_stream_flags_t flags = PA_STREAM_AUTO_TIMING_UPDATE;
86 static const pa_sample_spec ss = {
87 .format = PA_SAMPLE_S16LE,
93 flags |= PA_STREAM_INTERPOLATE_TIMING;
96 fprintf(stderr, "Connection established.\n");
98 stream = pa_stream_new(c, "interpol-test", &ss, NULL);
102 pa_assert_se(pa_stream_connect_playback(stream, NULL, NULL, flags, NULL, NULL) == 0);
103 pa_stream_set_write_callback(stream, stream_write_cb, NULL);
105 pa_assert_se(pa_stream_connect_record(stream, NULL, NULL, flags) == 0);
106 pa_stream_set_read_callback(stream, stream_read_cb, NULL);
109 pa_stream_set_latency_update_callback(stream, stream_latency_cb, NULL);
114 case PA_CONTEXT_TERMINATED:
117 case PA_CONTEXT_FAILED:
119 fprintf(stderr, "Context error: %s\n", pa_strerror(pa_context_errno(c)));
124 int main(int argc, char *argv[]) {
125 pa_threaded_mainloop* m = NULL;
127 struct timeval start, last_info = { 0, 0 };
128 pa_usec_t old_t = 0, old_rtc = 0;
130 pa_bool_t corked = FALSE;
133 pa_log_set_level(PA_LOG_DEBUG);
135 playback = argc <= 1 || !pa_streq(argv[1], "-r");
137 /* Set up a new main loop */
138 m = pa_threaded_mainloop_new();
141 mainloop_api = pa_threaded_mainloop_get_api(m);
143 context = pa_context_new(mainloop_api, argv[0]);
146 pa_context_set_state_callback(context, context_state_callback, NULL);
148 r = pa_context_connect(context, NULL, 0, NULL);
151 pa_gettimeofday(&start);
153 r = pa_threaded_mainloop_start(m);
157 for (k = 0; k < 20000; k++)
159 /* for (k = 0; k < 2000; k++) */
162 pa_bool_t success = FALSE, changed = FALSE;
164 struct timeval now, tv;
165 pa_bool_t playing = FALSE;
167 pa_threaded_mainloop_lock(m);
170 const pa_timing_info *info;
172 if (pa_stream_get_time(stream, &t) >= 0)
175 if ((info = pa_stream_get_timing_info(stream))) {
176 if (memcmp(&last_info, &info->timestamp, sizeof(struct timeval))) {
178 last_info = info->timestamp;
185 pa_threaded_mainloop_unlock(m);
187 pa_gettimeofday(&now);
193 rtc = pa_timeval_diff(&now, &start);
194 printf("%i\t%llu\t%llu\t%llu\t%llu\t%lli\t%u\t%u\n", k,
195 (unsigned long long) rtc,
196 (unsigned long long) t,
197 (unsigned long long) (rtc-old_rtc),
198 (unsigned long long) (t-old_t),
199 (signed long long) rtc - (signed long long) t,
208 cork_now = (rtc / (2*PA_USEC_PER_SEC)) % 2 == 1;
210 if (corked != cork_now) {
211 pa_threaded_mainloop_lock(m);
212 pa_operation_unref(pa_stream_cork(stream, cork_now, NULL, NULL));
213 pa_threaded_mainloop_unlock(m);
215 pa_log(cork_now ? "Corking" : "Uncorking");
222 /* Spin loop, ugly but normal usleep() is just too badly grained */
225 while (pa_timeval_diff(pa_gettimeofday(&now), &tv) < 1000)
230 pa_threaded_mainloop_stop(m);
233 pa_stream_disconnect(stream);
234 pa_stream_unref(stream);
238 pa_context_disconnect(context);
239 pa_context_unref(context);
243 pa_threaded_mainloop_free(m);