Merge branch 'refs/heads/t/i9e'
[paraslash.git] / fade.c
diff --git a/fade.c b/fade.c
index f95ef4c..e05e317 100644 (file)
--- a/fade.c
+++ b/fade.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1998-2009 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1998 Andre Noll <maan@tuebingen.mpg.de>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
 /** \file fade.c A volume fader and alarm clock for OSS. */
 
 #include <regex.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <sys/ioctl.h>
-#include <ctype.h>
-#include <stdlib.h> /* EXIT_SUCCESS */
-#include <unistd.h>
-#include <signal.h>
-#include <string.h>
-#include <limits.h>
-#include <sys/soundcard.h>
 
 #include "fade.cmdline.h"
 #include "para.h"
 #include "fd.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;
 
-__printf_2_3 void para_log(__a_unused int ll, const char *fmt, ...)
+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)++)
+
+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 the mixer device.
- */
-static int open_mixer(void)
-{
-       return para_open(conf.mixer_device_arg, O_RDWR, 42);
-}
-
-/*
- * Get channel volume via mixer_fd.
- */
-static int get_mixer_channel(int mixer_fd)
-{
-       int volume;
-
-       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.
- */
-static int open_and_get_mixer_channel(void)
-{
-       int mixer_fd;
-       int volume;
-
-       mixer_fd = open_mixer();
-       if (mixer_fd < 0)
-               return mixer_fd;
-       volume = get_mixer_channel(mixer_fd);
-       close(mixer_fd);
-       return volume;
-}
-
-/*
- * Set channel volume via mixer_fd.
- */
-static int set_mixer_channel(int mixer_fd, int volume)
+static int set_channel(struct mixer *m, struct mixer_handle *h, const char *channel)
 {
-       int tmp = (volume << 8) + volume;
 
-       if (ioctl(mixer_fd, MIXER_WRITE(conf.mixer_channel_arg), &tmp) < 0)
-               return -ERRNO_TO_PARA_ERROR(errno);
-       return 1;
+       PARA_NOTICE_LOG("using %s mixer channel\n", channel?
+               channel : "default");
+       return m->set_channel(h, channel);
 }
 
-/*
- * Open mixer, set volume and close mixer.
- */
-static int open_and_set_mixer_channel(int volume)
+/* 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 mixer_fd, ret = open_mixer();
-
-       if (ret < 0)
-               return ret;
-       mixer_fd = ret;
-       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;
-       }
-       conf.mixer_channel_arg = val;
-}
-
-/*
- * Open mixer, get volume, fade to new_vol in secs seconds and
- * close mixer.
- */
-static int fade(int new_vol, int fade_time)
-{
-       int vol, mixer_fd, diff, incr, ret;
+       int vol, diff, incr, ret;
        unsigned secs;
        struct timespec ts;
        unsigned long long tmp, tmp2; /* Careful with that axe, Eugene! */
 
        if (fade_time <= 0)
-               return 1;
+               return m->set(h, new_vol);
        secs = fade_time;
-       PARA_NOTICE_LOG("fading to %d in %d seconds\n", new_vol, secs);
-       ret = open_mixer();
-       if (ret < 0)
-               return ret;
-       mixer_fd = ret;
-       ret = get_mixer_channel(mixer_fd);
+       ret = m->get(h);
        if (ret < 0)
                goto out;
        vol = ret;
+       PARA_NOTICE_LOG("fading %s from %d to %d in %d seconds\n",
+               conf.mixer_channel_arg, vol, new_vol, secs);
        diff = new_vol - vol;
        if (!diff) {
                sleep(secs);
@@ -165,52 +83,95 @@ static int 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;
-               ret = set_mixer_channel(mixer_fd, vol);
+               ret = m->set(h, 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)
 {
-       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\n", cmdline);
+       PARA_NOTICE_LOG("%s\n", cmdline);
        ret = para_exec_cmdline_pid(&pid, cmdline, fds);
        free(cmdline);
        if (ret < 0) {
-               PARA_EMERG_LOG("%s\n", para_strerror(-ret));
-               exit(EXIT_FAILURE);
+               PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+               goto fail;
        }
        do
-               ret = wait(NULL);
-       while (ret != -1 && errno != ECHILD);
+               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);
 }
 
-static void change_afs_mode_and_play(char *afs_mode)
+static void change_afs_mode(char *afs_mode)
 {
        char *cmd;
 
        client_cmd("stop");
        if (!afs_mode)
                return;
-       cmd = make_message("select %s\n", afs_mode);
+       cmd = make_message("select %s", afs_mode);
        client_cmd(cmd);
        free(cmd);
-       client_cmd("play");
 }
 
-/*
- * sleep
- */
-static int sweet_dreams(void)
+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;
@@ -223,7 +184,6 @@ static int sweet_dreams(void)
        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);
@@ -243,29 +203,34 @@ static int sweet_dreams(void)
                tm = localtime(&t1);
        }
        wake_time_epoch = mktime(tm);
-       PARA_INFO_LOG("waketime: %s", asctime(tm));
+       PARA_INFO_LOG("waketime: %u:%02u\n", tm->tm_hour, tm->tm_min);
        client_cmd("stop");
        sleep(1);
        if (fot) {
-               PARA_INFO_LOG("initial volume: %d\n", iv);
-               ret = open_and_set_mixer_channel(iv);
+               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;
-               change_afs_mode_and_play(fo_mood);
-               ret = fade(fov, fot);
+               ret = fade(m, h, fov, fot);
                if (ret < 0)
                        return ret;
        } else {
-               ret = open_and_set_mixer_channel(fov);
+               ret = m->set(h, fov);
                if (ret < 0)
                        return ret;
        }
-       if (conf.sleep_mood_given)
-               change_afs_mode_and_play(sleep_mood);
-       else
+       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)
@@ -276,31 +241,33 @@ static int sweet_dreams(void)
                        (delay % 3600) / 60);
                sleep(delay);
        }
-       change_afs_mode_and_play(fi_mood);
-       ret = fade(fiv, fit);
+       client_cmd("play");
+       ret = fade(m, h, fiv, fit);
        PARA_INFO_LOG("fade complete, returning\n");
        return ret;
 }
 
-static int snooze(void)
+static int snooze(struct mixer *m, struct mixer_handle *h)
 {
-       int ret;
-       unsigned sleep_time;
+       int ret, val;
 
        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);
+       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
-               ret = fade(conf.so_vol_arg, conf.so_time_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", conf.snooze_time_arg);
-       sleep(sleep_time);
+       sleep(conf.snooze_time_arg);
        client_cmd("play");
-       return fade(conf.si_vol_arg, conf.si_time_arg);
+       return fade(m, h, conf.si_vol_arg, conf.si_time_arg);
 }
 
 static int configfile_exists(void)
@@ -317,13 +284,66 @@ static int configfile_exists(void)
        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);
+}
+
 int main(int argc, char *argv[])
 {
        int ret;
+       struct mixer *m;
+       struct mixer_handle *h = NULL;
 
-       if (fade_cmdline_parser(argc, argv, &conf))
-               exit(EXIT_FAILURE);
-       HANDLE_VERSION_FLAG("fade", conf);
+       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 && conf.config_file_given) {
                PARA_EMERG_LOG("can not read config file %s\n",
@@ -340,19 +360,37 @@ int main(int argc, char *argv[])
                };
                fade_cmdline_parser_config_file(conf.config_file_arg,
                        &conf, &params);
+               loglevel = get_loglevel_by_name(conf.loglevel_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);
        }
-       fixup_mixer_channel_arg();
+       if (ret < 0)
+               goto out;
        switch (conf.mode_arg) {
-       case mode_arg_sleep:
-               ret = sweet_dreams();
-               break;
        case mode_arg_fade:
-               ret = fade(conf.fade_vol_arg, conf.fade_time_arg);
+               ret = fade(m, h, conf.fade_vol_arg, conf.fade_time_arg);
                break;
        case mode_arg_snooze:
-               ret = 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;
        }
+out:
+       m->close(&h);
        if (ret < 0)
                PARA_EMERG_LOG("%s\n", para_strerror(-ret));
        return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;