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/***
This file is part of PulseAudio.
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <signal.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <math.h>
#include <pulse/pulseaudio.h>
#include <pulse/mainloop.h>
#include <pulsecore/thread.h>
static pa_context *context = NULL;
static pa_stream *stream = NULL;
static pa_mainloop_api *mainloop_api = NULL;
static pa_bool_t playback = TRUE;
static void stream_write_cb(pa_stream *p, size_t nbytes, void *userdata) {
/* Just some silence */
pa_assert_se(pa_stream_write(p, pa_xmalloc0(nbytes), nbytes, pa_xfree, 0, PA_SEEK_RELATIVE) == 0);
}
static void stream_read_cb(pa_stream *p, size_t nbytes, void *userdata) {
/* We don't care, just drop the data */
while (pa_stream_readable_size(p) > 0) {
const void *d;
size_t b;
pa_assert_se(pa_stream_peek(p, &d, &b) == 0);
pa_assert_se(pa_stream_drop(p) == 0);
}
}
/* This is called whenever the context status changes */
static void context_state_callback(pa_context *c, void *userdata) {
assert(c);
switch (pa_context_get_state(c)) {
case PA_CONTEXT_CONNECTING:
case PA_CONTEXT_AUTHORIZING:
case PA_CONTEXT_SETTING_NAME:
break;
case PA_CONTEXT_READY: {
static const pa_sample_spec ss = {
.format = PA_SAMPLE_S16LE,
.rate = 44100,
.channels = 2
};
fprintf(stderr, "Connection established.\n");
stream = pa_stream_new(c, "interpol-test", &ss, NULL);
assert(stream);
if (playback) {
pa_assert_se(pa_stream_connect_playback(stream, NULL, NULL, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL) == 0);
pa_stream_set_write_callback(stream, stream_write_cb, NULL);
} else {
pa_assert_se(pa_stream_connect_record(stream, NULL, NULL, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE) == 0);
pa_stream_set_read_callback(stream, stream_read_cb, NULL);
}
break;
}
case PA_CONTEXT_TERMINATED:
break;
case PA_CONTEXT_FAILED:
default:
fprintf(stderr, "Context error: %s\n", pa_strerror(pa_context_errno(c)));
abort();
}
}
int main(int argc, char *argv[]) {
pa_threaded_mainloop* m = NULL;
int k, r;
struct timeval start, last_info = { 0, 0 };
pa_usec_t old_t = 0, old_rtc = 0;
playback = argc <= 1 || !pa_streq(argv[1], "-r");
/* Set up a new main loop */
m = pa_threaded_mainloop_new();
assert(m);
mainloop_api = pa_threaded_mainloop_get_api(m);
context = pa_context_new(mainloop_api, argv[0]);
assert(context);
pa_context_set_state_callback(context, context_state_callback, NULL);
r = pa_context_connect(context, NULL, 0, NULL);
assert(r >= 0);
pa_gettimeofday(&start);
r = pa_threaded_mainloop_start(m);
assert(r >= 0);
for (k = 0; k < 5000; k++) {
pa_bool_t success = FALSE, changed = FALSE;
pa_usec_t t, rtc;
struct timeval now, tv;
pa_bool_t playing = FALSE;
pa_threaded_mainloop_lock(m);
if (stream) {
const pa_timing_info *info;
if (pa_stream_get_time(stream, &t) >= 0)
success = TRUE;
if ((info = pa_stream_get_timing_info(stream))) {
if (memcmp(&last_info, &info->timestamp, sizeof(struct timeval))) {
changed = TRUE;
last_info = info->timestamp;
}
if (info->playing)
playing = TRUE;
}
}
pa_threaded_mainloop_unlock(m);
pa_gettimeofday(&now);
if (success) {
rtc = pa_timeval_diff(&now, &start);
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);
fflush(stdout);
old_t = t;
old_rtc = rtc;
}
/* Spin loop, ugly but normal usleep() is just too badly grained */
tv = now;
while (pa_timeval_diff(pa_gettimeofday(&now), &tv) < 1000)
pa_thread_yield();
}
if (m)
pa_threaded_mainloop_stop(m);
if (stream) {
pa_stream_disconnect(stream);
pa_stream_unref(stream);
}
if (context) {
pa_context_disconnect(context);
pa_context_unref(context);
}
if (m)
pa_threaded_mainloop_free(m);
return 0;
}
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