1/***
2  This file is part of PulseAudio.
3
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.
8
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.
13
14  You should have received a copy of the GNU Lesser General Public License
15  along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
16***/
17
18#ifdef HAVE_CONFIG_H
19#include <config.h>
20#endif
21
22#include <signal.h>
23#include <string.h>
24#include <errno.h>
25#include <unistd.h>
26#include <assert.h>
27#include <stdio.h>
28#include <stdlib.h>
29
30#include <check.h>
31
32#include <pulse/pulseaudio.h>
33#include <pulse/mainloop.h>
34
35#include <pulsecore/sink.h>
36
37/* Set the number of streams such that it allows two simultaneous instances of
38 * connect-stress to be run and not go above the max limit for streams-per-sink.
39 * This leaves enough room for a couple other streams from regular system usage,
40 * which makes a non-error abort less likely (although still easily possible of
41 * playing >=3 streams outside of the test - including internal loopback, rtp,
42 * combine, remap streams etc.) */
43/* #define NSTREAMS ((PA_MAX_INPUTS_PER_SINK/2) - 1) */
44
45/* This test broke when PA_MAX_INPUTS_PER_SINK was increased from 32 to 256.
46 * Because we currently don't have time to figure out why, let's just set
47 * NSTREAMS to 20 in the meantime.
48 */
49#define NSTREAMS 20
50#define NTESTS 1000
51#define SAMPLE_HZ 44100
52
53static pa_context *context = NULL;
54static pa_stream *streams[NSTREAMS];
55static pa_threaded_mainloop *mainloop = NULL;
56static char *bname;
57
58static const pa_sample_spec sample_spec = {
59    .format = PA_SAMPLE_FLOAT32,
60    .rate = SAMPLE_HZ,
61    .channels = 1
62};
63
64static void context_state_callback(pa_context *c, void *userdata);
65
66/* Note: don't conflict with connect(2) declaration */
67static void _connect(const char *name, int *try) {
68    int ret;
69    pa_mainloop_api *api;
70
71    /* Set up a new main loop */
72    mainloop = pa_threaded_mainloop_new();
73    fail_unless(mainloop != NULL);
74
75    api = pa_threaded_mainloop_get_api(mainloop);
76    context = pa_context_new(api, name);
77    fail_unless(context != NULL);
78
79    pa_context_set_state_callback(context, context_state_callback, try);
80
81    /* Connect the context */
82    if (pa_context_connect(context, NULL, 0, NULL) < 0) {
83        fprintf(stderr, "pa_context_connect() failed.\n");
84        ck_abort();
85    }
86
87    ret = pa_threaded_mainloop_start(mainloop);
88    fail_unless(ret == 0);
89}
90
91static void _disconnect(void) {
92    int i;
93
94    fail_unless(mainloop != NULL);
95    fail_unless(context != NULL);
96
97    pa_threaded_mainloop_lock(mainloop);
98
99    for (i = 0; i < NSTREAMS; i++)
100        if (streams[i]) {
101            pa_stream_disconnect(streams[i]);
102            pa_stream_unref(streams[i]);
103            streams[i] = NULL;
104        }
105
106    pa_context_disconnect(context);
107    context = NULL;
108
109    pa_threaded_mainloop_unlock(mainloop);
110    pa_threaded_mainloop_stop(mainloop);
111    pa_threaded_mainloop_free(mainloop);
112    mainloop = NULL;
113}
114
115static const pa_buffer_attr buffer_attr = {
116    .maxlength = SAMPLE_HZ * sizeof(float) * NSTREAMS,
117    .tlength = (uint32_t) -1,
118    .prebuf = 0, /* Setting prebuf to 0 guarantees us the streams will run synchronously, no matter what */
119    .minreq = (uint32_t) -1,
120    .fragsize = 0
121};
122
123static void stream_write_callback(pa_stream *stream, size_t nbytes, void *userdata) {
124    char silence[8192];
125
126    memset(silence, 0, sizeof(silence));
127
128    while (nbytes) {
129        int n = PA_MIN(sizeof(silence), nbytes);
130        pa_stream_write(stream, silence, n, NULL, 0, 0);
131        nbytes -= n;
132    }
133}
134
135static void stream_state_callback(pa_stream *s, void *userdata) {
136    fail_unless(s != NULL);
137
138    switch (pa_stream_get_state(s)) {
139        case PA_STREAM_UNCONNECTED:
140        case PA_STREAM_CREATING:
141        case PA_STREAM_TERMINATED:
142        case PA_STREAM_READY:
143            break;
144
145        default:
146        case PA_STREAM_FAILED:
147            fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
148            ck_abort();
149    }
150}
151
152static void context_state_callback(pa_context *c, void *userdata) {
153    int *try;
154
155    fail_unless(c != NULL);
156    fail_unless(userdata != NULL);
157
158    try = (int*)userdata;
159
160    switch (pa_context_get_state(c)) {
161        case PA_CONTEXT_CONNECTING:
162        case PA_CONTEXT_AUTHORIZING:
163        case PA_CONTEXT_SETTING_NAME:
164            break;
165
166        case PA_CONTEXT_READY: {
167
168            int i;
169            fprintf(stderr, "Connection (%d of %d) established.\n", (*try)+1, NTESTS);
170
171            for (i = 0; i < NSTREAMS; i++) {
172                char name[64];
173
174                snprintf(name, sizeof(name), "stream #%i", i);
175                streams[i] = pa_stream_new(c, name, &sample_spec, NULL);
176                fail_unless(streams[i] != NULL);
177                pa_stream_set_state_callback(streams[i], stream_state_callback, NULL);
178                pa_stream_set_write_callback(streams[i], stream_write_callback, NULL);
179                pa_stream_connect_playback(streams[i], NULL, &buffer_attr, 0, NULL, NULL);
180            }
181
182            break;
183        }
184
185        case PA_CONTEXT_TERMINATED:
186            fprintf(stderr, "Connection terminated.\n");
187            pa_context_unref(context);
188            context = NULL;
189            break;
190
191        case PA_CONTEXT_FAILED:
192        default:
193            fprintf(stderr, "Context error: %s\n", pa_strerror(pa_context_errno(c)));
194            ck_abort();
195    }
196}
197
198START_TEST (connect_stress_test) {
199    int i;
200
201    for (i = 0; i < NSTREAMS; i++)
202        streams[i] = NULL;
203
204    for (i = 0; i < NTESTS; i++) {
205        _connect(bname, &i);
206        usleep(rand() % 500000);
207        _disconnect();
208        usleep(rand() % 500000);
209    }
210
211    fprintf(stderr, "Done.\n");
212}
213END_TEST
214
215int main(int argc, char *argv[]) {
216    int failed = 0;
217    Suite *s;
218    TCase *tc;
219    SRunner *sr;
220
221    bname = argv[0];
222
223    s = suite_create("Connect Stress");
224    tc = tcase_create("connectstress");
225    tcase_add_test(tc, connect_stress_test);
226    tcase_set_timeout(tc, 20 * 60);
227    suite_add_tcase(s, tc);
228
229    sr = srunner_create(s);
230    srunner_run_all(sr, CK_NORMAL);
231    failed = srunner_ntests_failed(sr);
232    srunner_free(sr);
233
234    return (failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
235}
236