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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 <pulse/pulseaudio.h>
#include <pulse/mainloop.h>
#include <pulsecore/sink.h>
/* Set the number of streams such that it allows two simultaneous instances of
* connect-stress to be run and not go above the max limit for streams-per-sink.
* This leaves enough room for a couple other streams from regular system usage,
* which makes a non-error abort less likely (although still easily possible of
* playing >=3 streams outside of the test - including internal loopback, rtp,
* combine, remap streams etc.) */
#define NSTREAMS ((PA_MAX_INPUTS_PER_SINK/2) - 1)
#define NTESTS 1000
#define SAMPLE_HZ 44100
static pa_context *context = NULL;
static pa_stream *streams[NSTREAMS];
static pa_threaded_mainloop *mainloop = NULL;
static const pa_sample_spec sample_spec = {
.format = PA_SAMPLE_FLOAT32,
.rate = SAMPLE_HZ,
.channels = 1
};
static void context_state_callback(pa_context *c, void *userdata);
static void connect(const char *name, int *try) {
int ret;
pa_mainloop_api *api;
/* Set up a new main loop */
mainloop = pa_threaded_mainloop_new();
assert(mainloop);
api = pa_threaded_mainloop_get_api(mainloop);
context = pa_context_new(api, name);
assert(context);
pa_context_set_state_callback(context, context_state_callback, try);
/* Connect the context */
if (pa_context_connect(context, NULL, 0, NULL) < 0) {
fprintf(stderr, "pa_context_connect() failed.\n");
abort();
}
ret = pa_threaded_mainloop_start(mainloop);
assert(ret == 0);
}
static void disconnect(void) {
int i;
assert(mainloop);
assert(context);
pa_threaded_mainloop_lock(mainloop);
for (i = 0; i < NSTREAMS; i++)
if (streams[i]) {
pa_stream_disconnect(streams[i]);
pa_stream_unref(streams[i]);
streams[i] = NULL;
}
pa_context_disconnect(context);
context = NULL;
pa_threaded_mainloop_unlock(mainloop);
pa_threaded_mainloop_stop(mainloop);
pa_threaded_mainloop_free(mainloop);
mainloop = NULL;
}
static const pa_buffer_attr buffer_attr = {
.maxlength = SAMPLE_HZ * sizeof(float) * NSTREAMS,
.tlength = (uint32_t) -1,
.prebuf = 0, /* Setting prebuf to 0 guarantees us the the streams will run synchronously, no matter what */
.minreq = (uint32_t) -1,
.fragsize = 0
};
static void stream_write_callback(pa_stream *stream, size_t nbytes, void *userdata) {
char silence[8192];
memset(silence, 0, sizeof(silence));
while (nbytes) {
int n = PA_MIN(sizeof(silence), nbytes);
pa_stream_write(stream, silence, n, NULL, 0, 0);
nbytes -= n;
}
}
static void stream_state_callback(pa_stream *s, void *userdata) {
assert(s);
switch (pa_stream_get_state(s)) {
case PA_STREAM_UNCONNECTED:
case PA_STREAM_CREATING:
case PA_STREAM_TERMINATED:
case PA_STREAM_READY:
break;
default:
case PA_STREAM_FAILED:
fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
abort();
}
}
static void context_state_callback(pa_context *c, void *userdata) {
int *try;
assert(c);
assert(userdata);
try = (int*)userdata;
switch (pa_context_get_state(c)) {
case PA_CONTEXT_CONNECTING:
case PA_CONTEXT_AUTHORIZING:
case PA_CONTEXT_SETTING_NAME:
break;
case PA_CONTEXT_READY: {
int i;
fprintf(stderr, "Connection (%d of %d) established.\n", (*try)+1, NTESTS);
for (i = 0; i < NSTREAMS; i++) {
char name[64];
snprintf(name, sizeof(name), "stream #%i", i);
streams[i] = pa_stream_new(c, name, &sample_spec, NULL);
assert(streams[i]);
pa_stream_set_state_callback(streams[i], stream_state_callback, NULL);
pa_stream_set_write_callback(streams[i], stream_write_callback, NULL);
pa_stream_connect_playback(streams[i], NULL, &buffer_attr, 0, NULL, NULL);
}
break;
}
case PA_CONTEXT_TERMINATED:
fprintf(stderr, "Connection terminated.\n");
pa_context_unref(context);
context = NULL;
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[]) {
int i;
for (i = 0; i < NSTREAMS; i++)
streams[i] = NULL;
for (i = 0; i < NTESTS; i++) {
connect(argv[0], &i);
usleep(rand() % 500000);
disconnect();
usleep(rand() % 500000);
}
fprintf(stderr, "Done.\n");
return 0;
}
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