fade.c

   1 /*
   2  * Copyright (C) 1998 Andre Noll <maan@tuebingen.mpg.de>
   3  *
   4  * Licensed under the GPL v2. For licencing details see COPYING.
   5  */
   6
   7 /** \file fade.c A volume fader and alarm clock for OSS. */
   8
   9 #include <regex.h>
  10
  11 #include "fade.cmdline.h"
  12 #include "para.h"
  13 #include "fd.h"
  14 #include "string.h"
  15 #include "mix.h"
  16 #include "error.h"
  17 #include "ggo.h"
  18 #include "version.h"
  19
  20 INIT_FADE_ERRLISTS;
  21 static struct fade_args_info conf;
  22
  23 enum mixer_id {MIXER_ENUM};
  24 static char *mixer_name[] = {MIXER_NAMES};
  25 DECLARE_MIXER_INITS;
  26 static struct mixer supported_mixer[] = {MIXER_ARRAY};
  27 #define FOR_EACH_MIXER(i) for ((i) = 0; (i) < NUM_SUPPORTED_MIXERS; (i)++)
  28
  29 static int loglevel;
  30 static __printf_2_3 void date_log(int ll, const char *fmt, ...)
  31 {
  32         va_list argp;
  33         time_t t1;
  34         struct tm *tm;
  35
  36         if (ll < loglevel)
  37                 return;
  38         time(&t1);
  39         tm = localtime(&t1);
  40         fprintf(stderr, "%d:%02d:%02d ", tm->tm_hour, tm->tm_min, tm->tm_sec);
  41         va_start(argp, fmt);
  42         vprintf(fmt, argp);
  43         va_end(argp);
  44 }
  45 __printf_2_3 void (*para_log)(int, const char*, ...) = date_log;
  46
  47 static int set_channel(struct mixer *m, struct mixer_handle *h, const char *channel)
  48 {
  49
  50         PARA_NOTICE_LOG("using %s mixer channel\n", channel?
  51                 channel : "default");
  52         return m->set_channel(h, channel);
  53 }
  54
  55 /* Fade to new volume in fade_time seconds. */
  56 static int fade(struct mixer *m, struct mixer_handle *h, int new_vol, int fade_time)
  57 {
  58         int vol, diff, incr, ret;
  59         unsigned secs;
  60         struct timespec ts;
  61         unsigned long long tmp, tmp2; /* Careful with that axe, Eugene! */
  62
  63         if (fade_time <= 0)
  64                 return m->set(h, new_vol);
  65         secs = fade_time;
  66         ret = m->get(h);
  67         if (ret < 0)
  68                 goto out;
  69         vol = ret;
  70         PARA_NOTICE_LOG("fading %s from %d to %d in %d seconds\n",
  71                 conf.mixer_channel_arg, vol, new_vol, secs);
  72         diff = new_vol - vol;
  73         if (!diff) {
  74                 sleep(secs);
  75                 goto out;
  76         }
  77         incr = diff > 0? 1: -1;
  78         diff = diff > 0? diff: -diff;
  79         tmp = secs * 1000 / diff;
  80         tmp2 = tmp % 1000;
  81         while ((new_vol - vol) * incr > 0) {
  82                 ts.tv_nsec = tmp2 * 1000000; /* really nec ?*/
  83                 ts.tv_sec = tmp / 1000; /* really nec ?*/
  84                 //printf("ts.tv_sec: %i\n", ts.tv_nsec);
  85                 vol += incr;
  86                 ret = m->set(h, vol);
  87                 if (ret < 0)
  88                         goto out;
  89                 //printf("vol = %i\n", vol);
  90                 nanosleep(&ts, NULL);
  91         }
  92 out:
  93         return ret;
  94 }
  95
  96 static void client_cmd(const char *cmd)
  97 {
  98         int ret, status, fds[3] = {0, 0, 0};
  99         pid_t pid;
 100         char *cmdline = make_message(BINDIR "/para_client %s", cmd);
 101
 102         PARA_NOTICE_LOG("%s\n", cmdline);
 103         ret = para_exec_cmdline_pid(&pid, cmdline, fds);
 104         free(cmdline);
 105         if (ret < 0) {
 106                 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
 107                 goto fail;
 108         }
 109         do
 110                 pid = waitpid(pid, &status, 0);
 111         while (pid == -1 && errno == EINTR);
 112         if (pid < 0) {
 113                 PARA_ERROR_LOG("%s\n", strerror(errno));
 114                 goto fail;
 115         }
 116         if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
 117                 goto fail;
 118         return;
 119 fail:
 120         PARA_EMERG_LOG("command \"%s\" failed\n", cmd);
 121         exit(EXIT_FAILURE);
 122 }
 123
 124 static void change_afs_mode(char *afs_mode)
 125 {
 126         char *cmd;
 127
 128         client_cmd("stop");
 129         if (!afs_mode)
 130                 return;
 131         cmd = make_message("select %s", afs_mode);
 132         client_cmd(cmd);
 133         free(cmd);
 134 }
 135
 136 static int set_initial_volume(struct mixer *m, struct mixer_handle *h)
 137 {
 138         int i, ret;
 139
 140         for (i = 0; i < conf.ivol_given; i++) {
 141                 char *p, *ch, *arg = para_strdup(conf.ivol_arg[i]);
 142                 int32_t iv;
 143                 p = strchr(arg, ':');
 144                 if (p) {
 145                         *p = '\0';
 146                         p++;
 147                         ch = arg;
 148                 } else {
 149                         p = arg;
 150                         ch = NULL;
 151                 }
 152                 ret = para_atoi32(p, &iv);
 153                 if (ret < 0) {
 154                         free(arg);
 155                         return ret;
 156                 }
 157                 ret = set_channel(m, h, ch);
 158                 if (!ch)
 159                         ch = "default";
 160                 if (ret < 0) {
 161                         PARA_WARNING_LOG("ignoring channel %s\n", ch);
 162                         ret = 0;
 163                 } else {
 164                         PARA_INFO_LOG("initial volume %s: %d\n", ch, iv);
 165                         ret = m->set(h, iv);
 166                 }
 167                 free(arg);
 168                 if (ret < 0)
 169                         return ret;
 170         }
 171         return 1;
 172 }
 173
 174 static int sweet_dreams(struct mixer *m, struct mixer_handle *h)
 175 {
 176         time_t t1, wake_time_epoch;
 177         unsigned int delay;
 178         struct tm *tm;
 179         int ret, min = conf.wake_min_arg;
 180         char *fo_mood = conf.fo_mood_arg;
 181         char *fi_mood = conf.fi_mood_arg;
 182         char *sleep_mood = conf.sleep_mood_arg;
 183         int fit = conf.fi_time_arg;
 184         int fot = conf.fo_time_arg;
 185         int fiv = conf.fi_vol_arg;
 186         int fov = conf.fo_vol_arg;
 187
 188         /* calculate wake time */
 189         time(&t1);
 190         if (conf.wake_hour_given) {
 191                 int hour = conf.wake_hour_arg;
 192                 tm = localtime(&t1);
 193                 if (tm->tm_hour > hour || (tm->tm_hour == hour && tm->tm_min> min)) {
 194                         t1 += 86400; /* wake time is tomorrow */
 195                         tm = localtime(&t1);
 196                 }
 197                 tm->tm_hour = hour;
 198                 tm->tm_min = min;
 199                 tm->tm_sec = 0;
 200         } else {
 201                 t1 += 9 * 60 * 60; /* nine hours from now */
 202                 PARA_INFO_LOG("default wake time: %lu\n", (long unsigned)t1);
 203                 tm = localtime(&t1);
 204         }
 205         wake_time_epoch = mktime(tm);
 206         PARA_INFO_LOG("waketime: %u:%02u\n", tm->tm_hour, tm->tm_min);
 207         client_cmd("stop");
 208         sleep(1);
 209         if (fot) {
 210                 ret = set_initial_volume(m, h);
 211                 if (ret < 0)
 212                         return ret;
 213                 change_afs_mode(fo_mood);
 214                 client_cmd("play");
 215                 ret = set_channel(m, h, conf.mixer_channel_arg);
 216                 if (ret < 0)
 217                         return ret;
 218                 ret = fade(m, h, fov, fot);
 219                 if (ret < 0)
 220                         return ret;
 221         } else {
 222                 ret = m->set(h, fov);
 223                 if (ret < 0)
 224                         return ret;
 225         }
 226         if (conf.sleep_mood_given) {
 227                 change_afs_mode(sleep_mood);
 228                 client_cmd("play");
 229         } else
 230                 client_cmd("stop");
 231         if (!fit)
 232                 return 1;
 233         change_afs_mode(fi_mood);
 234         for (;;) {
 235                 time(&t1);
 236                 if (wake_time_epoch <= t1 + fit)
 237                         break;
 238                 delay = wake_time_epoch - t1 - fit;
 239                 PARA_INFO_LOG("sleeping %u seconds (%u:%02u)\n",
 240                         delay, delay / 3600,
 241                         (delay % 3600) / 60);
 242                 sleep(delay);
 243         }
 244         client_cmd("play");
 245         ret = fade(m, h, fiv, fit);
 246         PARA_INFO_LOG("fade complete, returning\n");
 247         return ret;
 248 }
 249
 250 static int snooze(struct mixer *m, struct mixer_handle *h)
 251 {
 252         int ret, val;
 253
 254         if (conf.so_time_arg <= 0)
 255                 return 1;
 256         ret = m->get(h);
 257         if (ret < 0)
 258                 return ret;
 259         val = ret;
 260         if (val < conf.so_vol_arg)
 261                 ret = m->set(h, conf.so_vol_arg);
 262         else
 263                 ret = fade(m, h, conf.so_vol_arg, conf.so_time_arg);
 264         if (ret < 0)
 265                 return ret;
 266         client_cmd("pause");
 267         PARA_NOTICE_LOG("%d seconds snooze time...\n", conf.snooze_time_arg);
 268         sleep(conf.snooze_time_arg);
 269         client_cmd("play");
 270         return fade(m, h, conf.si_vol_arg, conf.si_time_arg);
 271 }
 272
 273 static int configfile_exists(void)
 274 {
 275         static char *config_file;
 276
 277         if (!conf.config_file_given) {
 278                 char *home = para_homedir();
 279                 free(config_file);
 280                 config_file = make_message("%s/.paraslash/fade.conf", home);
 281                 free(home);
 282                 conf.config_file_arg = config_file;
 283         }
 284         return file_exists(conf.config_file_arg);
 285 }
 286
 287 static void init_mixers(void)
 288 {
 289         int i;
 290
 291         FOR_EACH_MIXER(i) {
 292                 struct mixer *m = &supported_mixer[i];
 293                 PARA_DEBUG_LOG("initializing mixer API #%d (%s)\n",
 294                         i, mixer_name[i]);
 295                 m->init(m);
 296         }
 297 }
 298
 299 static int set_val(struct mixer *m, struct mixer_handle *h)
 300 {
 301         return m->set(h, conf.val_arg);
 302 }
 303
 304 static struct mixer *get_mixer_or_die(void)
 305 {
 306         int i;
 307
 308         if (!conf.mixer_api_given)
 309                 i = DEFAULT_MIXER;
 310         else
 311                 FOR_EACH_MIXER(i)
 312                         if (!strcmp(mixer_name[i], conf.mixer_api_arg))
 313                                 break;
 314         if (i < NUM_SUPPORTED_MIXERS) {
 315                 PARA_NOTICE_LOG("using %s mixer API\n", mixer_name[i]);
 316                 return supported_mixer + i;
 317         }
 318         printf("available mixer APIs: ");
 319         FOR_EACH_MIXER(i) {
 320                 int d = (i == DEFAULT_MIXER);
 321                 printf("%s%s%s ", d? "[" : "", mixer_name[i], d? "]" : "");
 322         }
 323         printf("\n");
 324         exit(EXIT_FAILURE);
 325 }
 326
 327 __noreturn static void print_help_and_die(void)
 328 {
 329         struct ggo_help h = DEFINE_GGO_HELP(fade);
 330         bool d = conf.detailed_help_given;
 331
 332         ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
 333         exit(0);
 334 }
 335
 336 int main(int argc, char *argv[])
 337 {
 338         int ret;
 339         struct mixer *m;
 340         struct mixer_handle *h = NULL;
 341
 342         fade_cmdline_parser(argc, argv, &conf);
 343         loglevel = get_loglevel_by_name(conf.loglevel_arg);
 344         version_handle_flag("fade", conf.version_given);
 345         if (conf.help_given || conf.detailed_help_given)
 346                 print_help_and_die();
 347         ret = configfile_exists();
 348         if (!ret && conf.config_file_given) {
 349                 PARA_EMERG_LOG("can not read config file %s\n",
 350                         conf.config_file_arg);
 351                 exit(EXIT_FAILURE);
 352         }
 353         if (ret) {
 354                 struct fade_cmdline_parser_params params = {
 355                         .override = 0,
 356                         .initialize = 0,
 357                         .check_required = 0,
 358                         .check_ambiguity = 0,
 359                         .print_errors = 1
 360                 };
 361                 fade_cmdline_parser_config_file(conf.config_file_arg,
 362                         &conf, &params);
 363                 loglevel = get_loglevel_by_name(conf.loglevel_arg);
 364         }
 365         init_mixers();
 366         m = get_mixer_or_die();
 367         ret = m->open(conf.mixer_device_arg, &h);
 368         if (ret < 0)
 369                 goto out;
 370         ret = set_channel(m, h, conf.mixer_channel_arg);
 371         if (ret == -E_BAD_CHANNEL) {
 372                 char *channels = m->get_channels(h);
 373                 printf("Available channels: %s\n", channels);
 374                 free(channels);
 375         }
 376         if (ret < 0)
 377                 goto out;
 378         switch (conf.mode_arg) {
 379         case mode_arg_fade:
 380                 ret = fade(m, h, conf.fade_vol_arg, conf.fade_time_arg);
 381                 break;
 382         case mode_arg_snooze:
 383                 ret = snooze(m, h);
 384                 break;
 385         case mode_arg_set:
 386                 ret = set_val(m, h);
 387                 break;
 388         default: /* sleep mode */
 389                 ret = sweet_dreams(m, h);
 390                 break;
 391         }
 392 out:
 393         m->close(&h);
 394         if (ret < 0)
 395                 PARA_EMERG_LOG("%s\n", para_strerror(-ret));
 396         return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
 397 }