src/conversation/gnunet-conversation-test.c

   1 /*
   2      This file is part of GNUnet.
   3      Copyright (C) 2013 GNUnet e.V.
   4
   5      GNUnet is free software: you can redistribute it and/or modify it
   6      under the terms of the GNU Affero General Public License as published
   7      by the Free Software Foundation, either version 3 of the License,
   8      or (at your option) any later version.
   9
  10      GNUnet is distributed in the hope that it will be useful, but
  11      WITHOUT ANY WARRANTY; without even the implied warranty of
  12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13      Affero General Public License for more details.
  14
  15      You should have received a copy of the GNU Affero General Public License
  16      along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18      SPDX-License-Identifier: AGPL3.0-or-later
  19  */
  20
  21 /**
  22  * @file conversation/gnunet-conversation-test.c
  23  * @brief tool to test speaker and microphone (for end users!)
  24  * @author Christian Grothoff
  25  */
  26 #include "platform.h"
  27 #include "gnunet_util_lib.h"
  28 #include "gnunet_speaker_lib.h"
  29 #include "gnunet_microphone_lib.h"
  30
  31 /**
  32  * How long do we record before we replay?
  33  */
  34 #define TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 5)
  35
  36
  37 /**
  38  * A recording we made.
  39  */
  40 struct Recording {
  41   /**
  42    * Kept in a DLL.
  43    */
  44   struct Recording *next;
  45
  46   /**
  47    * Kept in a DLL.
  48    */
  49   struct Recording *prev;
  50
  51   /**
  52    * Number of bytes that follow.
  53    */
  54   size_t size;
  55 };
  56
  57
  58 /**
  59  * Final status code.
  60  */
  61 static int ret;
  62
  63 /**
  64  * Handle to the microphone.
  65  */
  66 static struct GNUNET_MICROPHONE_Handle *microphone;
  67
  68 /**
  69  * Handle to the speaker.
  70  */
  71 static struct GNUNET_SPEAKER_Handle *speaker;
  72
  73 /**
  74  * Task scheduled to switch from recording to playback.
  75  */
  76 static struct GNUNET_SCHEDULER_Task * switch_task;
  77
  78 /**
  79  * The shutdown task.
  80  */
  81 static struct GNUNET_SCHEDULER_Task * st;
  82
  83 /**
  84  * Head of DLL with recorded frames.
  85  */
  86 static struct Recording *rec_head;
  87
  88 /**
  89  * Tail of DLL with recorded frames.
  90  */
  91 static struct Recording *rec_tail;
  92
  93
  94 /**
  95  * Terminate test.
  96  *
  97  * @param cls NULL
  98  */
  99 static void
 100 do_shutdown(void *cls)
 101 {
 102   struct Recording *rec;
 103
 104   (void)cls;
 105   if (NULL != switch_task)
 106     GNUNET_SCHEDULER_cancel(switch_task);
 107   if (NULL != microphone)
 108     GNUNET_MICROPHONE_destroy(microphone);
 109   if (NULL != speaker)
 110     GNUNET_SPEAKER_destroy(speaker);
 111   while (NULL != (rec = rec_head))
 112     {
 113       GNUNET_CONTAINER_DLL_remove(rec_head,
 114                                   rec_tail,
 115                                   rec);
 116       GNUNET_free(rec);
 117     }
 118   fprintf(stderr,
 119           _("\nEnd of transmission.  Have a GNU day.\n"));
 120 }
 121
 122
 123 /**
 124  * Terminate recording process and switch to playback.
 125  *
 126  * @param cls NULL
 127  */
 128 static void
 129 switch_to_speaker(void *cls)
 130 {
 131   (void)cls;
 132   switch_task = NULL;
 133   microphone->disable_microphone(microphone->cls);
 134   if (GNUNET_OK !=
 135       speaker->enable_speaker(speaker->cls))
 136     {
 137       fprintf(stderr,
 138               "Failed to enable microphone\n");
 139       ret = 1;
 140       GNUNET_SCHEDULER_shutdown();
 141       return;
 142     }
 143   fprintf(stderr,
 144           _("\nWe are now playing your recording back.  If you can hear it, your audio settings are working..."));
 145   for (struct Recording *rec = rec_head; NULL != rec; rec = rec->next)
 146     {
 147       GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
 148                  "Replaying %u bytes\n",
 149                  (unsigned int)rec->size);
 150       speaker->play(speaker->cls,
 151                     rec->size,
 152                     &rec[1]);
 153     }
 154   GNUNET_SCHEDULER_cancel(st);
 155   st = GNUNET_SCHEDULER_add_delayed(TIMEOUT,
 156                                     &do_shutdown,
 157                                     NULL);
 158 }
 159
 160
 161 /**
 162  * Process recorded audio data.
 163  *
 164  * @param cls clsoure
 165  * @param data_size number of bytes in @a data
 166  * @param data audio data to play
 167  */
 168 static void
 169 record(void *cls,
 170        size_t data_size,
 171        const void *data)
 172 {
 173   struct Recording *rec;
 174
 175   (void)cls;
 176   GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
 177              "Recorded %u bytes\n",
 178              (unsigned int)data_size);
 179   rec = GNUNET_malloc(sizeof(struct Recording) + data_size);
 180   rec->size = data_size;
 181   GNUNET_memcpy(&rec[1], data, data_size);
 182   GNUNET_CONTAINER_DLL_insert_tail(rec_head,
 183                                    rec_tail,
 184                                    rec);
 185 }
 186
 187
 188 /**
 189  * Main function that will be run by the scheduler.
 190  *
 191  * @param cls closure
 192  * @param args remaining command-line arguments
 193  * @param cfgfile name of the configuration file used (for saving, can be NULL!)
 194  * @param cfg configuration
 195  */
 196 static void
 197 run(void *cls,
 198     char *const *args,
 199     const char *cfgfile,
 200     const struct GNUNET_CONFIGURATION_Handle *cfg)
 201 {
 202   (void)cls;
 203   (void)args;
 204   (void)cfgfile;
 205   microphone = GNUNET_MICROPHONE_create_from_hardware(cfg);
 206   GNUNET_assert(NULL != microphone);
 207   speaker = GNUNET_SPEAKER_create_from_hardware(cfg);
 208   GNUNET_assert(NULL != speaker);
 209   switch_task = GNUNET_SCHEDULER_add_delayed(TIMEOUT,
 210                                              &switch_to_speaker,
 211                                              NULL);
 212   st = GNUNET_SCHEDULER_add_shutdown(&do_shutdown,
 213                                      NULL);
 214   fprintf(stderr,
 215           _("We will now be recording you for %s. After that time, the recording will be played back to you..."),
 216           GNUNET_STRINGS_relative_time_to_string(TIMEOUT, GNUNET_YES));
 217   if (GNUNET_OK !=
 218       microphone->enable_microphone(microphone->cls,
 219                                     &record, NULL))
 220     {
 221       fprintf(stderr,
 222               "Failed to enable microphone\n");
 223       ret = 1;
 224       GNUNET_SCHEDULER_shutdown();
 225       return;
 226     }
 227 }
 228
 229
 230 /**
 231  * The main function of our code to test microphone and speaker.
 232  *
 233  * @param argc number of arguments from the command line
 234  * @param argv command line arguments
 235  * @return 0 ok, 1 on error
 236  */
 237 int
 238 main(int argc,
 239      char *const *argv)
 240 {
 241   static const struct GNUNET_GETOPT_CommandLineOption options[] = {
 242     GNUNET_GETOPT_OPTION_END
 243   };
 244
 245   if (GNUNET_OK !=
 246       GNUNET_STRINGS_get_utf8_args(argc, argv,
 247                                    &argc, &argv))
 248     return 2;
 249
 250   ret = (GNUNET_OK ==
 251          GNUNET_PROGRAM_run(argc, argv,
 252                             "gnunet-conversation-test",
 253                             gettext_noop("help text"),
 254                             options,
 255                             &run,
 256                             NULL)) ? ret : 1;
 257   GNUNET_free((void*)argv);
 258   return ret;
 259 }
 260
 261 /* end of gnunet-conversation-test.c */