code.delx.au - pulseaudio/blob - src/tests/connect-stress.c

   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, write to the Free Software
  16   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  17   USA.
  18 ***/
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #include <signal.h>
  25 #include <string.h>
  26 #include <errno.h>
  27 #include <unistd.h>
  28 #include <assert.h>
  29 #include <stdio.h>
  30 #include <stdlib.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 #define NTESTS 1000
  45 #define SAMPLE_HZ 44100
  46
  47 static pa_context *context = NULL;
  48 static pa_stream *streams[NSTREAMS];
  49 static pa_threaded_mainloop *mainloop = NULL;
  50
  51 static const pa_sample_spec sample_spec = {
  52     .format = PA_SAMPLE_FLOAT32,
  53     .rate = SAMPLE_HZ,
  54     .channels = 1
  55 };
  56
  57 static void context_state_callback(pa_context *c, void *userdata);
  58
  59 static void connect(const char *name, int *try) {
  60     int ret;
  61     pa_mainloop_api *api;
  62
  63     /* Set up a new main loop */
  64     mainloop = pa_threaded_mainloop_new();
  65     assert(mainloop);
  66
  67     api = pa_threaded_mainloop_get_api(mainloop);
  68     context = pa_context_new(api, name);
  69     assert(context);
  70
  71     pa_context_set_state_callback(context, context_state_callback, try);
  72
  73     /* Connect the context */
  74     if (pa_context_connect(context, NULL, 0, NULL) < 0) {
  75         fprintf(stderr, "pa_context_connect() failed.\n");
  76         abort();
  77     }
  78
  79     ret = pa_threaded_mainloop_start(mainloop);
  80     assert(ret == 0);
  81 }
  82
  83 static void disconnect(void) {
  84     int i;
  85
  86     assert(mainloop);
  87     assert(context);
  88
  89     pa_threaded_mainloop_lock(mainloop);
  90
  91     for (i = 0; i < NSTREAMS; i++)
  92         if (streams[i]) {
  93             pa_stream_disconnect(streams[i]);
  94             pa_stream_unref(streams[i]);
  95             streams[i] = NULL;
  96         }
  97
  98     pa_context_disconnect(context);
  99     context = NULL;
 100
 101     pa_threaded_mainloop_unlock(mainloop);
 102     pa_threaded_mainloop_stop(mainloop);
 103     pa_threaded_mainloop_free(mainloop);
 104     mainloop = NULL;
 105 }
 106
 107 static const pa_buffer_attr buffer_attr = {
 108     .maxlength = SAMPLE_HZ * sizeof(float) * NSTREAMS,
 109     .tlength = (uint32_t) -1,
 110     .prebuf = 0, /* Setting prebuf to 0 guarantees us the streams will run synchronously, no matter what */
 111     .minreq = (uint32_t) -1,
 112     .fragsize = 0
 113 };
 114
 115 static void stream_write_callback(pa_stream *stream, size_t nbytes, void *userdata) {
 116     char silence[8192];
 117
 118     memset(silence, 0, sizeof(silence));
 119
 120     while (nbytes) {
 121         int n = PA_MIN(sizeof(silence), nbytes);
 122         pa_stream_write(stream, silence, n, NULL, 0, 0);
 123         nbytes -= n;
 124     }
 125 }
 126
 127 static void stream_state_callback(pa_stream *s, void *userdata) {
 128     assert(s);
 129
 130     switch (pa_stream_get_state(s)) {
 131         case PA_STREAM_UNCONNECTED:
 132         case PA_STREAM_CREATING:
 133         case PA_STREAM_TERMINATED:
 134         case PA_STREAM_READY:
 135             break;
 136
 137         default:
 138         case PA_STREAM_FAILED:
 139             fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
 140             abort();
 141     }
 142 }
 143
 144 static void context_state_callback(pa_context *c, void *userdata) {
 145     int *try;
 146
 147     assert(c);
 148     assert(userdata);
 149
 150     try = (int*)userdata;
 151
 152     switch (pa_context_get_state(c)) {
 153         case PA_CONTEXT_CONNECTING:
 154         case PA_CONTEXT_AUTHORIZING:
 155         case PA_CONTEXT_SETTING_NAME:
 156             break;
 157
 158         case PA_CONTEXT_READY: {
 159
 160             int i;
 161             fprintf(stderr, "Connection (%d of %d) established.\n", (*try)+1, NTESTS);
 162
 163             for (i = 0; i < NSTREAMS; i++) {
 164                 char name[64];
 165
 166                 snprintf(name, sizeof(name), "stream #%i", i);
 167                 streams[i] = pa_stream_new(c, name, &sample_spec, NULL);
 168                 assert(streams[i]);
 169                 pa_stream_set_state_callback(streams[i], stream_state_callback, NULL);
 170                 pa_stream_set_write_callback(streams[i], stream_write_callback, NULL);
 171                 pa_stream_connect_playback(streams[i], NULL, &buffer_attr, 0, NULL, NULL);
 172             }
 173
 174             break;
 175         }
 176
 177         case PA_CONTEXT_TERMINATED:
 178             fprintf(stderr, "Connection terminated.\n");
 179             pa_context_unref(context);
 180             context = NULL;
 181             break;
 182
 183         case PA_CONTEXT_FAILED:
 184         default:
 185             fprintf(stderr, "Context error: %s\n", pa_strerror(pa_context_errno(c)));
 186             abort();
 187     }
 188 }
 189
 190 int main(int argc, char *argv[]) {
 191     int i;
 192
 193     for (i = 0; i < NSTREAMS; i++)
 194         streams[i] = NULL;
 195
 196     for (i = 0; i < NTESTS; i++) {
 197         connect(argv[0], &i);
 198         usleep(rand() % 500000);
 199         disconnect();
 200         usleep(rand() % 500000);
 201     }
 202
 203     fprintf(stderr, "Done.\n");
 204
 205     return 0;
 206 }