]> git.tuebingen.mpg.de Git - paraslash.git/blobdiff - fade.c
Merge branch 'refs/heads/t/format-signedness'
[paraslash.git] / fade.c
diff --git a/fade.c b/fade.c
index 96ee22c0e941bbaae59e3d8d45815710b2fe95d3..2a001ebacde964eb1f710413540cc23f2bc85699 100644 (file)
--- a/fade.c
+++ b/fade.c
 /*
- * Copyright (C) 1998-2005 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1998 Andre Noll <maan@tuebingen.mpg.de>
  *
- *     This program is free software; you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation; either version 2 of the License, or
- *     (at your option) any later version.
- *
- *     This program 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 General Public License
- *     along with this program; if not, write to the Free Software
- *     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+ * Licensed under the GPL v2. For licencing details see COPYING.
  */
 
-/** \file fade.c a volume fader and alarm clock */
+/** \file fade.c A volume fader and alarm clock for OSS. */
+
+#include <regex.h>
 
 #include "fade.cmdline.h"
 #include "para.h"
 #include "fd.h"
-
-#include <stropts.h>
-#include <ctype.h>
-#include <curses.h>
-#include <stdlib.h> /* EXIT_SUCCESS */
-#include <unistd.h>
-#include <signal.h>
-#include <string.h>
-#include <limits.h>
-#include <linux/soundcard.h>
 #include "string.h"
+#include "mix.h"
+#include "error.h"
+#include "ggo.h"
+#include "version.h"
 
+INIT_FADE_ERRLISTS;
+static struct fade_args_info conf;
 
-struct gengetopt_args_info args_info;
+enum mixer_id {MIXER_ENUM};
+static char *mixer_name[] = {MIXER_NAMES};
+DECLARE_MIXER_INITS;
+static struct mixer supported_mixer[] = {MIXER_ARRAY};
+#define FOR_EACH_MIXER(i) for ((i) = 0; (i) < NUM_SUPPORTED_MIXERS; (i)++)
 
-void para_log(__a_unused int ll, const char *fmt,...)
+static int loglevel;
+static __printf_2_3 void date_log(int ll, const char *fmt, ...)
 {
        va_list argp;
        time_t t1;
        struct tm *tm;
 
+       if (ll < loglevel)
+               return;
        time(&t1);
        tm = localtime(&t1);
-       printf("%d:%02d:%02d ", tm->tm_hour, tm->tm_min, tm->tm_sec);
+       fprintf(stderr, "%d:%02d:%02d ", tm->tm_hour, tm->tm_min, tm->tm_sec);
        va_start(argp, fmt);
        vprintf(fmt, argp);
        va_end(argp);
 }
+__printf_2_3 void (*para_log)(int, const char*, ...) = date_log;
 
-/*
- * open mixer device
- */
-static int open_mixer(void)
+static int set_channel(struct mixer *m, struct mixer_handle *h, const char *channel)
 {
-        int mixer_fd;
 
-        if ((mixer_fd = open(args_info.mixer_device_arg, O_RDWR, 0)) < 0)
-                return -1;
-        return mixer_fd;
+       PARA_NOTICE_LOG("using %s mixer channel\n", channel?
+               channel : "default");
+       return m->set_channel(h, channel);
 }
 
-/*
- * get volume via mixer_fd
- */
-static int do_get_vol(int mixer_fd)
+/* Fade to new volume in fade_time seconds. */
+static int fade(struct mixer *m, struct mixer_handle *h, int new_vol, int fade_time)
 {
-       int volume;
-
-       if (ioctl(mixer_fd, MIXER_READ(SOUND_MIXER_VOLUME), &volume) < 0)
-               return -1;
-       /* take the mean value of left and right volume */
-       return (volume % 256 + (volume >> 8)) / 2;
-}
-
-/*
- * open mixer, get volume and close mixer
- */
-static int get_vol(void)
-{
-       int mixer_fd;
-       int volume;
-
-       mixer_fd = open_mixer();
-       if (mixer_fd < 0)
-               return -1;
-       volume = do_get_vol(mixer_fd);
-       close(mixer_fd);
-       return volume;
-}
-
-/*
- * set volume via mixer_fd
- */
-static int do_set_vol(int mixer_fd, int volume)
-{
-       int tmp;
-       tmp = (volume << 8) + volume;
-       if (ioctl(mixer_fd, MIXER_WRITE(SOUND_MIXER_VOLUME), &tmp) < 0)
-               return 0;
-       return 1;
-}
-
-/*
- * open mixer, set volume and close mixer
- */
-static int set_vol(int volume)
-{
-       int mixer_fd;
-       int ret;
-
-       mixer_fd = open_mixer();
-       ret = 0;
-       if (mixer_fd < 0)
-               goto out;
-       if (!do_set_vol(mixer_fd, volume))
-               goto out;
-       ret = 1;
-       close(mixer_fd);
-out:
-       return ret;
-}
-
-/*
- * Open mixer, get volume, fade to new_vol in secs seconds and
- * close mixer
- */
-static int fade(int new_vol, unsigned int secs)
-{
-       int vol, mixer_fd = -1, diff, incr, ret;
+       int vol, diff, incr, ret;
+       unsigned secs;
        struct timespec ts;
        unsigned long long tmp, tmp2; /* Careful with that axe, Eugene! */
 
-       PARA_NOTICE_LOG("fading to %d in %d seconds\n", new_vol, secs);
-       ret = 0;
-       if (!secs)
-               goto out;
-       mixer_fd = open_mixer();
-       if (mixer_fd < 0)
-               goto out;
-       vol = do_get_vol(mixer_fd);
-       if (vol < 0)
+       if (fade_time <= 0)
+               return m->set(h, new_vol);
+       secs = fade_time;
+       ret = m->get(h);
+       if (ret < 0)
                goto out;
+       vol = ret;
+       PARA_NOTICE_LOG("fading %s from %d to %d in %u seconds\n",
+               conf.mixer_channel_arg, vol, new_vol, secs);
        diff = new_vol - vol;
        if (!diff) {
                sleep(secs);
-               ret = 1;
                goto out;
        }
        incr = diff > 0? 1: -1;
@@ -158,159 +83,326 @@ static int fade(int new_vol, unsigned int secs)
                ts.tv_sec = tmp / 1000; /* really nec ?*/
                //printf("ts.tv_sec: %i\n", ts.tv_nsec);
                vol += incr;
-               if (!do_set_vol(mixer_fd, vol))
+               ret = m->set(h, vol);
+               if (ret < 0)
                        goto out;
                //printf("vol = %i\n", vol);
                nanosleep(&ts, NULL);
        }
 out:
-       if (mixer_fd >= 0)
-               close(mixer_fd);
-       return 1;
+       return ret;
 }
 
-static int client_cmd(const char *cmd,...)
+static void client_cmd(const char *cmd)
 {
-       int ret, fds[3] = {0, 0, 0};
+       int ret, status, fds[3] = {0, 0, 0};
        pid_t pid;
        char *cmdline = make_message(BINDIR "/para_client %s", cmd);
-       PARA_INFO_LOG("%s", cmdline);
+
+       PARA_NOTICE_LOG("%s\n", cmdline);
        ret = para_exec_cmdline_pid(&pid, cmdline, fds);
        free(cmdline);
-       return ret;
+       if (ret < 0) {
+               PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+               goto fail;
+       }
+       do
+               pid = waitpid(pid, &status, 0);
+       while (pid == -1 && errno == EINTR);
+       if (pid < 0) {
+               PARA_ERROR_LOG("%s\n", strerror(errno));
+               goto fail;
+       }
+       if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
+               goto fail;
+       return;
+fail:
+       PARA_EMERG_LOG("command \"%s\" failed\n", cmd);
+       exit(EXIT_FAILURE);
 }
 
-/*
- * sleep
- */
-static void sweet_dreams(void)
+static void change_afs_mode(char *afs_mode)
+{
+       char *cmd;
+
+       client_cmd("stop");
+       if (!afs_mode)
+               return;
+       cmd = make_message("select %s", afs_mode);
+       client_cmd(cmd);
+       free(cmd);
+}
+
+static int set_initial_volume(struct mixer *m, struct mixer_handle *h)
+{
+       int i, ret;
+
+       for (i = 0; i < conf.ivol_given; i++) {
+               char *p, *ch, *arg = para_strdup(conf.ivol_arg[i]);
+               int32_t iv;
+               p = strchr(arg, ':');
+               if (p) {
+                       *p = '\0';
+                       p++;
+                       ch = arg;
+               } else {
+                       p = arg;
+                       ch = NULL;
+               }
+               ret = para_atoi32(p, &iv);
+               if (ret < 0) {
+                       free(arg);
+                       return ret;
+               }
+               ret = set_channel(m, h, ch);
+               if (!ch)
+                       ch = "default";
+               if (ret < 0) {
+                       PARA_WARNING_LOG("ignoring channel %s\n", ch);
+                       ret = 0;
+               } else {
+                       PARA_INFO_LOG("initial volume %s: %d\n", ch, iv);
+                       ret = m->set(h, iv);
+               }
+               free(arg);
+               if (ret < 0)
+                       return ret;
+       }
+       return 1;
+}
+
+static int sweet_dreams(struct mixer *m, struct mixer_handle *h)
 {
        time_t t1, wake_time_epoch;
        unsigned int delay;
        struct tm *tm;
-       int hour = args_info.wake_hour_arg;
-       int min = args_info.wake_min_arg;
-       char *fa_stream = args_info.fa_stream_arg;
-       char *wake_stream = args_info.wake_stream_arg;
-       //char *current_stream = stat_items[STREAM].content;
-       int wf = args_info.wake_fade_arg;
-       int sf = args_info.fa_fade_arg;
-       int wv = args_info.wake_vol_arg;
-       int sv = args_info.fa_vol_arg;
-       int iv = args_info.sleep_ivol_arg;
-       char *cmd, *sleep_stream = args_info.sleep_stream_given?
-               args_info.sleep_stream_arg : NULL;
-
-       if (sf) {
-               PARA_INFO_LOG("initial volume: %d\n", iv);
-               set_vol(iv);
-               cmd = make_message("csp %s\n", fa_stream);
-               client_cmd(cmd);
-               free(cmd);
-               fade(sv, sf);
-       }
-       if (sleep_stream) {
-               cmd = make_message("csp %s\n", sleep_stream);
-               client_cmd(cmd);
-               free(cmd);
-       } else
-               client_cmd("stop");
-       if (!wf)
-               return;
+       int ret, min = conf.wake_min_arg;
+       char *fo_mood = conf.fo_mood_arg;
+       char *fi_mood = conf.fi_mood_arg;
+       char *sleep_mood = conf.sleep_mood_arg;
+       int fit = conf.fi_time_arg;
+       int fot = conf.fo_time_arg;
+       int fiv = conf.fi_vol_arg;
+       int fov = conf.fo_vol_arg;
+
        /* calculate wake time */
        time(&t1);
-       tm = localtime(&t1);
-       if (tm->tm_hour > hour || (tm->tm_hour == hour && tm->tm_min> min)) {
-               /* wake time is tomorrow */
-               t1 += 86400;
+       if (conf.wake_hour_given) {
+               int hour = conf.wake_hour_arg;
+               tm = localtime(&t1);
+               if (tm->tm_hour > hour || (tm->tm_hour == hour && tm->tm_min> min)) {
+                       t1 += 86400; /* wake time is tomorrow */
+                       tm = localtime(&t1);
+               }
+               tm->tm_hour = hour;
+               tm->tm_min = min;
+               tm->tm_sec = 0;
+       } else {
+               t1 += 9 * 60 * 60; /* nine hours from now */
+               PARA_INFO_LOG("default wake time: %lu\n", (long unsigned)t1);
                tm = localtime(&t1);
-               t1 -= 86400;
        }
-       tm->tm_hour = hour;
-       tm->tm_min = min;
-       tm->tm_sec = 0;
        wake_time_epoch = mktime(tm);
-       PARA_INFO_LOG("waketime: %s", asctime(tm));
-       while (wake_time_epoch > t1 + wf) {
-               delay = wake_time_epoch - t1 - wf;
+       PARA_INFO_LOG("waketime: %d:%02d\n", tm->tm_hour, tm->tm_min);
+       client_cmd("stop");
+       sleep(1);
+       if (fot) {
+               ret = set_initial_volume(m, h);
+               if (ret < 0)
+                       return ret;
+               change_afs_mode(fo_mood);
+               client_cmd("play");
+               ret = set_channel(m, h, conf.mixer_channel_arg);
+               if (ret < 0)
+                       return ret;
+               ret = fade(m, h, fov, fot);
+               if (ret < 0)
+                       return ret;
+       } else {
+               ret = m->set(h, fov);
+               if (ret < 0)
+                       return ret;
+       }
+       if (conf.sleep_mood_given) {
+               change_afs_mode(sleep_mood);
+               client_cmd("play");
+       } else
+               client_cmd("stop");
+       if (!fit)
+               return 1;
+       change_afs_mode(fi_mood);
+       for (;;) {
+               time(&t1);
+               if (wake_time_epoch <= t1 + fit)
+                       break;
+               delay = wake_time_epoch - t1 - fit;
                PARA_INFO_LOG("sleeping %u seconds (%u:%02u)\n",
-                       delay, delay / 3600, 
+                       delay, delay / 3600,
                        (delay % 3600) / 60);
                sleep(delay);
-               time(&t1);
        }
-       cmd = make_message("csp %s\n", wake_stream);
-       client_cmd(cmd);
-       free(cmd);
-       fade(wv, wf);
-       PARA_INFO_LOG("%s", "fade complete, returning\n");
+       client_cmd("play");
+       ret = fade(m, h, fiv, fit);
+       PARA_INFO_LOG("fade complete, returning\n");
+       return ret;
 }
 
-static void snooze(void)
+static int snooze(struct mixer *m, struct mixer_handle *h)
 {
-       if (get_vol() < args_info.snooze_out_vol_arg)
-               set_vol(args_info.snooze_out_vol_arg);
+       int ret, val;
+
+       if (conf.so_time_arg <= 0)
+               return 1;
+       ret = m->get(h);
+       if (ret < 0)
+               return ret;
+       val = ret;
+       if (val < conf.so_vol_arg)
+               ret = m->set(h, conf.so_vol_arg);
        else
-               fade(args_info.snooze_out_vol_arg, args_info.snooze_out_fade_arg);
+               ret = fade(m, h, conf.so_vol_arg, conf.so_time_arg);
+       if (ret < 0)
+               return ret;
        client_cmd("pause");
-       PARA_NOTICE_LOG("%d seconds snooze time...\n", args_info.snooze_time_arg);
-       sleep(args_info.snooze_time_arg);
+       PARA_NOTICE_LOG("%d seconds snooze time...\n", conf.snooze_time_arg);
+       sleep(conf.snooze_time_arg);
        client_cmd("play");
-       fade(args_info.snooze_in_vol_arg, args_info.snooze_in_fade_arg);
+       return fade(m, h, conf.si_vol_arg, conf.si_time_arg);
 }
 
 static int configfile_exists(void)
 {
-        static char *config_file;
+       static char *config_file;
 
-        if (!args_info.config_file_given) {
+       if (!conf.config_file_given) {
                char *home = para_homedir();
-               const char *conf = ".paraslash/fade.conf";
                free(config_file);
-               config_file = make_message("%s/%s", home, conf);
+               config_file = make_message("%s/.paraslash/fade.conf", home);
                free(home);
-                args_info.config_file_arg = config_file;
-        }
-        return file_exists(args_info.config_file_arg);
+               conf.config_file_arg = config_file;
+       }
+       return file_exists(conf.config_file_arg);
+}
+
+static void init_mixers(void)
+{
+       int i;
+
+       FOR_EACH_MIXER(i) {
+               struct mixer *m = &supported_mixer[i];
+               PARA_DEBUG_LOG("initializing mixer API #%d (%s)\n",
+                       i, mixer_name[i]);
+               m->init(m);
+       }
+}
+
+static int set_val(struct mixer *m, struct mixer_handle *h)
+{
+       return m->set(h, conf.val_arg);
+}
+
+static struct mixer *get_mixer_or_die(void)
+{
+       int i;
+
+       if (!conf.mixer_api_given)
+               i = DEFAULT_MIXER;
+       else
+               FOR_EACH_MIXER(i)
+                       if (!strcmp(mixer_name[i], conf.mixer_api_arg))
+                               break;
+       if (i < NUM_SUPPORTED_MIXERS) {
+               PARA_NOTICE_LOG("using %s mixer API\n", mixer_name[i]);
+               return supported_mixer + i;
+       }
+       printf("available mixer APIs: ");
+       FOR_EACH_MIXER(i) {
+               int d = (i == DEFAULT_MIXER);
+               printf("%s%s%s ", d? "[" : "", mixer_name[i], d? "]" : "");
+       }
+       printf("\n");
+       exit(EXIT_FAILURE);
 }
 
+__noreturn static void print_help_and_die(void)
+{
+       struct ggo_help h = DEFINE_GGO_HELP(fade);
+       bool d = conf.detailed_help_given;
+
+       ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
+       exit(0);
+}
 
+/**
+ * The main function of para_fade.
+ *
+ * The executable is linked with the alsa or the oss mixer API, or both. It has
+ * a custom log function which prefixes log messages with the current date.
+ *
+ * \param argc Argument counter.
+ * \param argv Argument vector.
+ *
+ * \return EXIT_SUCCESS or EXIT_FAILURE.
+ */
 int main(int argc, char *argv[])
 {
        int ret;
+       struct mixer *m;
+       struct mixer_handle *h = NULL;
 
-       if (cmdline_parser(argc, argv, &args_info))
-               exit(EXIT_FAILURE);
+       fade_cmdline_parser(argc, argv, &conf);
+       loglevel = get_loglevel_by_name(conf.loglevel_arg);
+       version_handle_flag("fade", conf.version_given);
+       if (conf.help_given || conf.detailed_help_given)
+               print_help_and_die();
        ret = configfile_exists();
-       if (!ret && args_info.config_file_given) {
+       if (!ret && conf.config_file_given) {
                PARA_EMERG_LOG("can not read config file %s\n",
-                       args_info.config_file_arg);
+                       conf.config_file_arg);
                exit(EXIT_FAILURE);
        }
-       if (ret)
-               cmdline_parser_configfile(args_info.config_file_arg,
-                       &args_info, 0, 0, 0);
-       if ((ret = open_mixer()) < 0) {
-               PARA_EMERG_LOG("can not open mixer device %s.",
-                       args_info.mixer_device_arg);
-               exit(EXIT_FAILURE);
-       } else
-               close(ret);
-       ret = 0;
-       setlinebuf(stdout);
-       if (!strcmp(args_info.mode_arg, "sleep")) {
-               sweet_dreams();
-               goto out;
+       if (ret) {
+               struct fade_cmdline_parser_params params = {
+                       .override = 0,
+                       .initialize = 0,
+                       .check_required = 0,
+                       .check_ambiguity = 0,
+                       .print_errors = 1
+               };
+               fade_cmdline_parser_config_file(conf.config_file_arg,
+                       &conf, &params);
+               loglevel = get_loglevel_by_name(conf.loglevel_arg);
        }
-       if (!strcmp(args_info.mode_arg, "fade")) {
-               fade(args_info.fade_vol_arg, args_info.fade_time_arg);
+       init_mixers();
+       m = get_mixer_or_die();
+       ret = m->open(conf.mixer_device_arg, &h);
+       if (ret < 0)
                goto out;
+       ret = set_channel(m, h, conf.mixer_channel_arg);
+       if (ret == -E_BAD_CHANNEL) {
+               char *channels = m->get_channels(h);
+               printf("Available channels: %s\n", channels);
+               free(channels);
        }
-       if (!strcmp(args_info.mode_arg, "snooze")) {
-               snooze();
+       if (ret < 0)
                goto out;
+       switch (conf.mode_arg) {
+       case mode_arg_fade:
+               ret = fade(m, h, conf.fade_vol_arg, conf.fade_time_arg);
+               break;
+       case mode_arg_snooze:
+               ret = snooze(m, h);
+               break;
+       case mode_arg_set:
+               ret = set_val(m, h);
+               break;
+       default: /* sleep mode */
+               ret = sweet_dreams(m, h);
+               break;
        }
-       ret = -1;
 out:
-       return ret;
+       m->close(&h);
+       if (ret < 0)
+               PARA_EMERG_LOG("%s\n", para_strerror(-ret));
+       return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
 }