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
;
46 static pa_usec_t latency
= 0;
48 static void stream_write_cb(pa_stream
*p
, size_t nbytes
, void *userdata
) {
49 /* Just some silence */
54 pa_assert_se((nbytes
= pa_stream_writable_size(p
)) != (size_t) -1);
59 pa_assert_se(pa_stream_begin_write(p
, &data
, &nbytes
) == 0);
60 pa_memzero(data
, nbytes
);
61 pa_assert_se(pa_stream_write(p
, data
, nbytes
, NULL
, 0, PA_SEEK_RELATIVE
) == 0);
65 static void stream_read_cb(pa_stream
*p
, size_t nbytes
, void *userdata
) {
66 /* We don't care about the data, just drop it */
71 pa_assert_se((nbytes
= pa_stream_readable_size(p
)) != (size_t) -1);
76 pa_assert_se(pa_stream_peek(p
, &data
, &nbytes
) == 0);
77 pa_assert_se(pa_stream_drop(p
) == 0);
81 static void stream_latency_cb(pa_stream
*p
, void *userdata
) {
85 o
= pa_stream_update_timing_info(p
, NULL
, NULL
);
86 pa_operation_unref(o
);
90 /* This is called whenever the context status changes */
91 static void context_state_callback(pa_context
*c
, void *userdata
) {
94 switch (pa_context_get_state(c
)) {
95 case PA_CONTEXT_CONNECTING
:
96 case PA_CONTEXT_AUTHORIZING
:
97 case PA_CONTEXT_SETTING_NAME
:
100 case PA_CONTEXT_READY
: {
101 pa_stream_flags_t flags
= PA_STREAM_AUTO_TIMING_UPDATE
;
103 static const pa_sample_spec ss
= {
104 .format
= PA_SAMPLE_S16LE
,
110 attr
.maxlength
= (uint32_t) -1;
111 attr
.tlength
= latency
> 0 ? (uint32_t) pa_usec_to_bytes(latency
, &ss
) : (uint32_t) -1;
112 attr
.prebuf
= (uint32_t) -1;
113 attr
.minreq
= (uint32_t) -1;
114 attr
.fragsize
= (uint32_t) -1;
117 flags
|= PA_STREAM_INTERPOLATE_TIMING
;
121 flags
|= PA_STREAM_ADJUST_LATENCY
;
123 fprintf(stderr
, "Connection established.\n");
125 pa_assert_se(stream
= pa_stream_new(c
, "interpol-test", &ss
, NULL
));
128 pa_assert_se(pa_stream_connect_playback(stream
, NULL
, &attr
, flags
, NULL
, NULL
) == 0);
129 pa_stream_set_write_callback(stream
, stream_write_cb
, NULL
);
131 pa_assert_se(pa_stream_connect_record(stream
, NULL
, &attr
, flags
) == 0);
132 pa_stream_set_read_callback(stream
, stream_read_cb
, NULL
);
135 pa_stream_set_latency_update_callback(stream
, stream_latency_cb
, NULL
);
140 case PA_CONTEXT_TERMINATED
:
143 case PA_CONTEXT_FAILED
:
145 fprintf(stderr
, "Context error: %s\n", pa_strerror(pa_context_errno(c
)));
150 int main(int argc
, char *argv
[]) {
151 pa_threaded_mainloop
* m
= NULL
;
153 struct timeval start
, last_info
= { 0, 0 };
154 pa_usec_t old_t
= 0, old_rtc
= 0;
156 pa_bool_t corked
= FALSE
;
159 pa_log_set_level(PA_LOG_DEBUG
);
161 playback
= argc
<= 1 || !pa_streq(argv
[1], "-r");
164 (argc
>= 2 && !pa_streq(argv
[1], "-r")) ? atoi(argv
[1]) :
165 (argc
>= 3 ? atoi(argv
[2]) : 0);
167 /* Set up a new main loop */
168 pa_assert_se(m
= pa_threaded_mainloop_new());
169 pa_assert_se(mainloop_api
= pa_threaded_mainloop_get_api(m
));
170 pa_assert_se(context
= pa_context_new(mainloop_api
, argv
[0]));
172 pa_context_set_state_callback(context
, context_state_callback
, NULL
);
174 pa_assert_se(pa_context_connect(context
, NULL
, 0, NULL
) >= 0);
176 pa_gettimeofday(&start
);
178 pa_assert_se(pa_threaded_mainloop_start(m
) >= 0);
181 for (k
= 0; k
< 20000; k
++)
183 /* for (k = 0; k < 2000; k++) */
186 pa_bool_t success
= FALSE
, changed
= FALSE
;
188 struct timeval now
, tv
;
189 pa_bool_t playing
= FALSE
;
191 pa_threaded_mainloop_lock(m
);
194 const pa_timing_info
*info
;
196 if (pa_stream_get_time(stream
, &t
) >= 0 &&
197 pa_stream_get_latency(stream
, &d
, NULL
) >= 0)
200 if ((info
= pa_stream_get_timing_info(stream
))) {
201 if (memcmp(&last_info
, &info
->timestamp
, sizeof(struct timeval
))) {
203 last_info
= info
->timestamp
;
210 pa_threaded_mainloop_unlock(m
);
212 pa_gettimeofday(&now
);
218 rtc
= pa_timeval_diff(&now
, &start
);
219 printf("%i\t%llu\t%llu\t%llu\t%llu\t%lli\t%u\t%u\t%llu\t%llu\n", k
,
220 (unsigned long long) rtc
,
221 (unsigned long long) t
,
222 (unsigned long long) (rtc
-old_rtc
),
223 (unsigned long long) (t
-old_t
),
224 (signed long long) rtc
- (signed long long) t
,
227 (unsigned long long) latency
,
228 (unsigned long long) d
);
235 cork_now
= (rtc
/ (2*PA_USEC_PER_SEC
)) % 2 == 1;
237 if (corked
!= cork_now
) {
238 pa_threaded_mainloop_lock(m
);
239 pa_operation_unref(pa_stream_cork(stream
, cork_now
, NULL
, NULL
));
240 pa_threaded_mainloop_unlock(m
);
242 pa_log(cork_now
? "Corking" : "Uncorking");
249 /* Spin loop, ugly but normal usleep() is just too badly grained */
252 while (pa_timeval_diff(pa_gettimeofday(&now
), &tv
) < 1000)
257 pa_threaded_mainloop_stop(m
);
260 pa_stream_disconnect(stream
);
261 pa_stream_unref(stream
);
265 pa_context_disconnect(context
);
266 pa_context_unref(context
);
270 pa_threaded_mainloop_free(m
);