gui: Check return value of para_exec_cmdline_pid().
[paraslash.git] / fade.c
diff --git a/fade.c b/fade.c
index c86b938..d542259 100644 (file)
--- a/fade.c
+++ b/fade.c
@@ -1,33 +1,33 @@
 /*
- * Copyright (C) 1998-2007 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1998-2012 Andre Noll <maan@systemlinux.org>
  *
  * 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 <sys/types.h>
-#include <dirent.h>
-
-#include "fade.cmdline.h"
-#include "para.h"
-#include "fd.h"
-
-#include <stropts.h>
+#include <sys/ioctl.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 <sys/soundcard.h>
 
+#include "fade.cmdline.h"
+#include "para.h"
+#include "fd.h"
+#include "string.h"
+#include "error.h"
+#include "version.h"
 
-struct fade_args_info conf;
+INIT_FADE_ERRLISTS;
+static struct fade_args_info conf;
 
-void para_log(__a_unused int ll, const char *fmt,...)
+__printf_2_3 void date_log(__a_unused int ll, const char *fmt, ...)
 {
        va_list argp;
        time_t t1;
@@ -40,92 +40,120 @@ void para_log(__a_unused int ll, const char *fmt,...)
        vprintf(fmt, argp);
        va_end(argp);
 }
+__printf_2_3 void (*para_log)(int, const char*, ...) = date_log;
 
 /*
- * open mixer device
+ * Open the mixer device.
  */
 static int open_mixer(void)
 {
-       return open(conf.mixer_device_arg, O_RDWR, 0);
+       PARA_INFO_LOG("opening %s\n", conf.mixer_device_arg);
+       return para_open(conf.mixer_device_arg, O_RDWR, 42);
 }
 
 /*
- * get volume via mixer_fd
+ * Get channel volume via mixer_fd.
  */
-static int do_get_vol(int mixer_fd)
+static int get_mixer_channel(int mixer_fd)
 {
        int volume;
 
-       if (ioctl(mixer_fd, MIXER_READ(SOUND_MIXER_VOLUME), &volume) < 0)
-               return -1;
+       if (ioctl(mixer_fd, MIXER_READ(conf.mixer_channel_arg), &volume) < 0)
+               return -ERRNO_TO_PARA_ERROR(errno);
        /* take the mean value of left and right volume */
        return (volume % 256 + (volume >> 8)) / 2;
 }
 
 /*
- * open mixer, get volume and close mixer
+ * Open mixer, get volume and close mixer.
  */
-static int get_vol(void)
+static int open_and_get_mixer_channel(void)
 {
        int mixer_fd;
        int volume;
 
        mixer_fd = open_mixer();
        if (mixer_fd < 0)
-               return -1;
-       volume = do_get_vol(mixer_fd);
+               return mixer_fd;
+       volume = get_mixer_channel(mixer_fd);
        close(mixer_fd);
        return volume;
 }
 
 /*
- * set volume via mixer_fd
+ * Set channel volume via mixer_fd.
  */
-static int do_set_vol(int mixer_fd, int volume)
+static int set_mixer_channel(int mixer_fd, int volume)
 {
        int tmp = (volume << 8) + volume;
 
-       if (ioctl(mixer_fd, MIXER_WRITE(SOUND_MIXER_VOLUME), &tmp) < 0)
-               return -1;
+       if (ioctl(mixer_fd, MIXER_WRITE(conf.mixer_channel_arg), &tmp) < 0)
+               return -ERRNO_TO_PARA_ERROR(errno);
        return 1;
 }
 
 /*
- * open mixer, set volume and close mixer
+ * Open mixer, set volume and close mixer.
  */
-static int set_vol(int volume)
+static int open_and_set_mixer_channel(int volume)
 {
        int mixer_fd, ret = open_mixer();
 
        if (ret < 0)
                return ret;
        mixer_fd = ret;
-       ret = do_set_vol(mixer_fd, volume);
+       ret = set_mixer_channel(mixer_fd, volume);
        close(mixer_fd);
        return ret;
 }
 
+static void fixup_mixer_channel_arg(void)
+{
+       int val = SOUND_MIXER_VOLUME; /* STFU, gcc */
+
+       switch (conf.mixer_channel_arg) {
+               case mixer_channel_arg_volume: val = SOUND_MIXER_VOLUME; break;
+               case mixer_channel_arg_bass: val = SOUND_MIXER_BASS; break;
+               case mixer_channel_arg_treble: val = SOUND_MIXER_TREBLE; break;
+               case mixer_channel_arg_synth: val = SOUND_MIXER_SYNTH; break;
+               case mixer_channel_arg_pcm: val = SOUND_MIXER_PCM; break;
+               case mixer_channel_arg_speaker: val = SOUND_MIXER_SPEAKER; break;
+               case mixer_channel_arg_line: val = SOUND_MIXER_LINE; break;
+               case mixer_channel_arg_mic: val = SOUND_MIXER_MIC; break;
+               case mixer_channel_arg_cd: val = SOUND_MIXER_CD; break;
+               case mixer_channel_arg_imix: val = SOUND_MIXER_IMIX; break;
+               case mixer_channel_arg_altpcm: val = SOUND_MIXER_ALTPCM; break;
+               case mixer_channel_arg_reclev: val = SOUND_MIXER_RECLEV; break;
+               case mixer_channel_arg_igain: val = SOUND_MIXER_IGAIN; break;
+               case mixer_channel_arg_ogain: val = SOUND_MIXER_OGAIN; break;
+               default: break;
+       }
+       conf.mixer_channel_arg = val;
+}
+
 /*
  * Open mixer, get volume, fade to new_vol in secs seconds and
- * close mixer
+ * close mixer.
  */
-static void fade(int new_vol, int fade_time)
+static int fade(int new_vol, int fade_time)
 {
-       int vol, mixer_fd, diff, incr;
+       int vol, mixer_fd, diff, incr, ret;
        unsigned secs;
        struct timespec ts;
        unsigned long long tmp, tmp2; /* Careful with that axe, Eugene! */
 
        if (fade_time <= 0)
-               return;
+               return 1;
        secs = fade_time;
        PARA_NOTICE_LOG("fading to %d in %d seconds\n", new_vol, secs);
-       mixer_fd = open_mixer();
-       if (mixer_fd < 0)
-               return;
-       vol = do_get_vol(mixer_fd);
-       if (vol < 0)
+       ret = open_mixer();
+       if (ret < 0)
+               return ret;
+       mixer_fd = ret;
+       ret = get_mixer_channel(mixer_fd);
+       if (ret < 0)
                goto out;
+       vol = ret;
        diff = new_vol - vol;
        if (!diff) {
                sleep(secs);
@@ -140,13 +168,15 @@ static void fade(int new_vol, int fade_time)
                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) < 0)
+               ret = set_mixer_channel(mixer_fd, vol);
+               if (ret < 0)
                        goto out;
                //printf("vol = %i\n", vol);
                nanosleep(&ts, NULL);
        }
 out:
        close(mixer_fd);
+       return ret;
 }
 
 static void client_cmd(const char *cmd)
@@ -158,8 +188,10 @@ static void client_cmd(const char *cmd)
        PARA_INFO_LOG("%s\n", cmdline);
        ret = para_exec_cmdline_pid(&pid, cmdline, fds);
        free(cmdline);
-       if (ret < 0)
+       if (ret < 0) {
+               PARA_EMERG_LOG("%s\n", para_strerror(-ret));
                exit(EXIT_FAILURE);
+       }
        do
                ret = wait(NULL);
        while (ret != -1 && errno != ECHILD);
@@ -181,20 +213,20 @@ static void change_afs_mode_and_play(char *afs_mode)
 /*
  * sleep
  */
-static void sweet_dreams(void)
+static int sweet_dreams(void)
 {
        time_t t1, wake_time_epoch;
        unsigned int delay;
        struct tm *tm;
-       int min = conf.wake_min_arg;
-       char *fa_mode = conf.fa_mode_arg;
-       char *wake_mode = conf.wake_mode_arg;
-       char *sleep_mode = conf.sleep_mode_arg;
-       int wf = conf.wake_fade_arg;
-       int sf = conf.fa_fade_arg;
-       int wv = conf.wake_vol_arg;
-       int sv = conf.fa_vol_arg;
-       int iv = conf.sleep_ivol_arg;
+       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;
+       int iv = conf.ivol_arg;
 
        /* calculate wake time */
        time(&t1);
@@ -210,54 +242,68 @@ static void sweet_dreams(void)
                tm->tm_sec = 0;
        } else {
                t1 += 9 * 60 * 60; /* nine hours from now */
-               PARA_INFO_LOG("default wake time: %lu\n", t1);
+               PARA_INFO_LOG("default wake time: %lu\n", (long unsigned)t1);
                tm = localtime(&t1);
        }
        wake_time_epoch = mktime(tm);
        PARA_INFO_LOG("waketime: %s", asctime(tm));
        client_cmd("stop");
        sleep(1);
-       if (sf) {
+       if (fot) {
                PARA_INFO_LOG("initial volume: %d\n", iv);
-               set_vol(iv);
-               change_afs_mode_and_play(fa_mode);
-               fade(sv, sf);
-       } else
-               set_vol(sf);
-       change_afs_mode_and_play(sleep_mode);
-       if (!wf)
-               return;
+               ret = open_and_set_mixer_channel(iv);
+               if (ret < 0)
+                       return ret;
+               change_afs_mode_and_play(fo_mood);
+               ret = fade(fov, fot);
+               if (ret < 0)
+                       return ret;
+       } else {
+               ret = open_and_set_mixer_channel(fov);
+               if (ret < 0)
+                       return ret;
+       }
+       if (conf.sleep_mood_given)
+               change_afs_mode_and_play(sleep_mood);
+       else
+               client_cmd("stop");
+       if (!fit)
+               return 1;
        for (;;) {
                time(&t1);
-               if (wake_time_epoch <= t1 + wf)
+               if (wake_time_epoch <= t1 + fit)
                        break;
-               delay = wake_time_epoch - t1 - wf;
+               delay = wake_time_epoch - t1 - fit;
                PARA_INFO_LOG("sleeping %u seconds (%u:%02u)\n",
                        delay, delay / 3600,
                        (delay % 3600) / 60);
                sleep(delay);
        }
-       change_afs_mode_and_play(wake_mode);
-       fade(wv, wf);
+       change_afs_mode_and_play(fi_mood);
+       ret = fade(fiv, fit);
        PARA_INFO_LOG("fade complete, returning\n");
+       return ret;
 }
 
-static void snooze(void)
+static int snooze(void)
 {
+       int ret;
        unsigned sleep_time;
 
-       if (conf.snooze_time_arg <= 0)
-               return;
-       sleep_time = conf.snooze_time_arg;
-       if (get_vol() < conf.snooze_out_vol_arg)
-               set_vol(conf.snooze_out_vol_arg);
+       if (conf.so_time_arg <= 0)
+               return 1;
+       sleep_time = conf.so_time_arg;
+       if (open_and_get_mixer_channel() < conf.so_vol_arg)
+               ret = open_and_set_mixer_channel(conf.so_vol_arg);
        else
-               fade(conf.snooze_out_vol_arg, conf.snooze_out_fade_arg);
+               ret = fade(conf.so_vol_arg, conf.so_time_arg);
+       if (ret < 0)
+               return ret;
        client_cmd("pause");
        PARA_NOTICE_LOG("%d seconds snooze time...\n", conf.snooze_time_arg);
        sleep(sleep_time);
        client_cmd("play");
-       fade(conf.snooze_in_vol_arg, conf.snooze_in_fade_arg);
+       return fade(conf.si_vol_arg, conf.si_time_arg);
 }
 
 static int configfile_exists(void)
@@ -274,7 +320,6 @@ static int configfile_exists(void)
        return file_exists(conf.config_file_arg);
 }
 
-
 int main(int argc, char *argv[])
 {
        int ret;
@@ -293,33 +338,25 @@ int main(int argc, char *argv[])
                        .override = 0,
                        .initialize = 0,
                        .check_required = 0,
-                       .check_ambiguity = 0
+                       .check_ambiguity = 0,
+                       .print_errors = 1
                };
                fade_cmdline_parser_config_file(conf.config_file_arg,
                        &conf, &params);
        }
-       ret = open_mixer();
-       if (ret < 0) {
-               PARA_EMERG_LOG("can not open mixer device %s.",
-                       conf.mixer_device_arg);
-               exit(EXIT_FAILURE);
-       }
-       close(ret);
-       ret = 0;
-//     setlinebuf(stdout);
-       if (!strcmp(conf.mode_arg, "sleep")) {
-               sweet_dreams();
-               goto out;
-       }
-       if (!strcmp(conf.mode_arg, "fade")) {
-               fade(conf.fade_vol_arg, conf.fade_time_arg);
-               goto out;
-       }
-       if (!strcmp(conf.mode_arg, "snooze")) {
-               snooze();
-               goto out;
+       fixup_mixer_channel_arg();
+       switch (conf.mode_arg) {
+       case mode_arg_fade:
+               ret = fade(conf.fade_vol_arg, conf.fade_time_arg);
+               break;
+       case mode_arg_snooze:
+               ret = snooze();
+               break;
+       default: /* sleep mode */
+               ret = sweet_dreams();
+               break;
        }
-       ret = -1;
-out:
+       if (ret < 0)
+               PARA_EMERG_LOG("%s\n", para_strerror(-ret));
        return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
 }