+/*
+ * Copyright (C) 1998 Andre Noll <maan@tuebingen.mpg.de>
+ *
+ * Licensed under the GPL v2. For licencing details see COPYING.
+ */
+
+/** \file mixer.c A volume fader and alarm clock for OSS. */
+
+#include <regex.h>
+#include <lopsub.h>
+
+#include "mixer.lsg.h"
+#include "para.h"
+#include "fd.h"
+#include "string.h"
+#include "mix.h"
+#include "error.h"
+#include "version.h"
+
+/** Array of error strings. */
+DEFINE_PARA_ERRLIST;
+
+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 struct lls_parse_result *lpr, *sub_lpr;
+
+#define CMD_PTR(_cmd) (lls_cmd(LSG_MIXER_CMD_ ## _cmd, mixer_suite))
+#define OPT_RESULT(_cmd, _opt) (lls_opt_result( \
+ LSG_MIXER_ ## _cmd ## _OPT_ ## _opt, (LSG_MIXER_CMD_ ## _cmd == 0)? lpr : sub_lpr))
+#define OPT_GIVEN(_cmd, _opt) (lls_opt_given(OPT_RESULT(_cmd, _opt)))
+#define OPT_STRING_VAL(_cmd, _opt) (lls_string_val(0, OPT_RESULT(_cmd, _opt)))
+#define OPT_UINT32_VAL(_cmd, _opt) (lls_uint32_val(0, OPT_RESULT(_cmd, _opt)))
+
+typedef int (*mixer_subcommand_handler_t)(struct mixer *, struct mixer_handle *);
+
+#define EXPORT_CMD(_cmd) const mixer_subcommand_handler_t \
+ lsg_mixer_com_ ## _cmd ## _user_data = &com_ ## _cmd;
+
+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);
+ 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;
+
+static int set_channel(struct mixer *m, struct mixer_handle *h, const char *channel)
+{
+
+ PARA_NOTICE_LOG("using %s mixer channel\n", channel?
+ channel : "default");
+ return m->set_channel(h, channel);
+}
+
+/* Fade to new volume in fade_time seconds. */
+static int fade(struct mixer *m, struct mixer_handle *h, uint32_t new_vol,
+ uint32_t fade_time)
+{
+ 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 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 %u in %u seconds\n",
+ OPT_STRING_VAL(PARA_MIXER, MIXER_CHANNEL), vol, new_vol, secs);
+ diff = new_vol - vol;
+ if (!diff) {
+ sleep(secs);
+ goto out;
+ }
+ incr = diff > 0? 1: -1;
+ diff = diff > 0? diff: -diff;
+ tmp = secs * 1000 / diff;
+ tmp2 = tmp % 1000;
+ while ((new_vol - vol) * incr > 0) {
+ ts.tv_nsec = tmp2 * 1000000; /* really nec ?*/
+ ts.tv_sec = tmp / 1000; /* really nec ?*/
+ //printf("ts.tv_sec: %i\n", ts.tv_nsec);
+ vol += incr;
+ ret = m->set(h, vol);
+ if (ret < 0)
+ goto out;
+ //printf("vol = %i\n", vol);
+ nanosleep(&ts, NULL);
+ }
+out:
+ return ret;
+}
+static int com_fade(struct mixer *m, struct mixer_handle *h)
+{
+ uint32_t new_vol = OPT_UINT32_VAL(FADE, FADE_VOL);
+ uint32_t fade_time = OPT_UINT32_VAL(FADE, FADE_TIME);
+ return fade(m, h, new_vol, fade_time);
+}
+EXPORT_CMD(fade);
+
+static void client_cmd(const char *cmd)
+{
+ int ret, status, fds[3] = {0, 0, 0};
+ pid_t pid;
+ char *cmdline = make_message(BINDIR "/para_client %s", cmd);
+
+ PARA_NOTICE_LOG("%s\n", cmdline);
+ ret = para_exec_cmdline_pid(&pid, cmdline, fds);
+ free(cmdline);
+ 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);
+}
+
+static void change_afs_mode(const 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 < OPT_GIVEN(SLEEP, IVOL); i++) {
+ const char *val = lls_string_val(i, OPT_RESULT(SLEEP, IVOL));
+ char *p, *ch, *arg = para_strdup(val);
+ 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 com_sleep(struct mixer *m, struct mixer_handle *h)
+{
+ time_t t1, wake_time_epoch;
+ unsigned int delay;
+ struct tm *tm;
+ int ret, min = OPT_UINT32_VAL(SLEEP, WAKE_MIN);
+ const char *fo_mood = OPT_STRING_VAL(SLEEP, FO_MOOD);
+ const char *fi_mood = OPT_STRING_VAL(SLEEP, FI_MOOD);
+ const char *sleep_mood = OPT_STRING_VAL(SLEEP, SLEEP_MOOD);
+ int fit = OPT_UINT32_VAL(SLEEP, FI_TIME);
+ int fot = OPT_UINT32_VAL(SLEEP, FO_TIME);
+ int fiv = OPT_UINT32_VAL(SLEEP, FI_VOL);
+ int fov = OPT_UINT32_VAL(SLEEP, FO_VOL);
+
+ /* calculate wake time */
+ time(&t1);
+ if (OPT_GIVEN(SLEEP, WAKE_HOUR)) {
+ int hour = OPT_UINT32_VAL(SLEEP, WAKE_HOUR);
+ 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);
+ }
+ wake_time_epoch = mktime(tm);
+ 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, OPT_STRING_VAL(PARA_MIXER, MIXER_CHANNEL));
+ 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 (OPT_GIVEN(SLEEP, SLEEP_MOOD)) {
+ 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 % 3600) / 60);
+ sleep(delay);
+ }
+ client_cmd("play");
+ ret = fade(m, h, fiv, fit);
+ PARA_INFO_LOG("fade complete, returning\n");
+ return ret;
+}
+EXPORT_CMD(sleep);
+
+static int com_snooze(struct mixer *m, struct mixer_handle *h)
+{
+ int ret, val;
+
+ if (OPT_UINT32_VAL(SNOOZE, SO_TIME) == 0)
+ return 1;
+ ret = m->get(h);
+ if (ret < 0)
+ return ret;
+ val = ret;
+ if (val < OPT_UINT32_VAL(SNOOZE, SO_VOL))
+ ret = m->set(h, OPT_UINT32_VAL(SNOOZE, SO_VOL));
+ else
+ ret = fade(m, h, OPT_UINT32_VAL(SNOOZE, SO_VOL),
+ OPT_UINT32_VAL(SNOOZE, SO_TIME));
+ if (ret < 0)
+ return ret;
+ client_cmd("pause");
+ PARA_NOTICE_LOG("%" PRIu32 " seconds snooze time...\n",
+ OPT_UINT32_VAL(SNOOZE, SNOOZE_TIME));
+ sleep(OPT_UINT32_VAL(SNOOZE, SNOOZE_TIME));
+ client_cmd("play");
+ return fade(m, h, OPT_UINT32_VAL(SNOOZE, SI_VOL),
+ OPT_UINT32_VAL(SNOOZE, SI_TIME));
+}
+EXPORT_CMD(snooze);
+
+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 com_set(struct mixer *m, struct mixer_handle *h)
+{
+ return m->set(h, OPT_UINT32_VAL(SET, VAL));
+}
+EXPORT_CMD(set);
+
+static struct mixer *get_mixer_or_die(void)
+{
+ int i;
+
+ if (!OPT_GIVEN(PARA_MIXER, MIXER_API))
+ i = DEFAULT_MIXER;
+ else
+ FOR_EACH_MIXER(i)
+ if (!strcmp(mixer_name[i],
+ OPT_STRING_VAL(PARA_MIXER, MIXER_API)))
+ 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);
+}
+
+static void show_subcommands(void)
+{
+ const struct lls_command *cmd;
+ int i;
+ printf("Subcommands:\n");
+ for (i = 1; (cmd = lls_cmd(i, mixer_suite)); i++) {
+ const char *name = lls_command_name(cmd);
+ const char *purpose = lls_purpose(cmd);
+ printf("%-20s%s\n", name, purpose);
+ }
+}
+
+
+static int com_help(__a_unused struct mixer *m, __a_unused struct mixer_handle *h)
+{
+ const struct lls_command *cmd;
+ const struct lls_opt_result *r_l = OPT_RESULT(HELP, LONG);
+ char *txt, *errctx;
+ const char *name;
+ int ret;
+
+ ret = lls_check_arg_count(sub_lpr, 0, 1, NULL);
+ if (ret < 0)
+ return ret;
+ if (lls_num_inputs(sub_lpr) == 0) {
+ show_subcommands();
+ return 0;
+ }
+ name = lls_input(0, sub_lpr);
+ ret = lls(lls_lookup_subcmd(name, mixer_suite, &errctx));
+ if (ret < 0) {
+ if (errctx)
+ PARA_ERROR_LOG("%s\n", errctx);
+ free(errctx);
+ return ret;
+ }
+ cmd = lls_cmd(ret, mixer_suite);
+ if (lls_opt_given(r_l))
+ txt = lls_long_help(cmd);
+ else
+ txt = lls_short_help(cmd);
+ printf("%s", txt);
+ free(txt);
+ return 0;
+}
+EXPORT_CMD(help);
+
+static void handle_help_flags(void)
+{
+ char *help;
+
+ if (OPT_GIVEN(PARA_MIXER, DETAILED_HELP))
+ help = lls_long_help(CMD_PTR(PARA_MIXER));
+ else if (OPT_GIVEN(PARA_MIXER, HELP))
+ help = lls_short_help(CMD_PTR(PARA_MIXER));
+ else
+ return;
+ printf("%s", help);
+ free(help);
+ show_subcommands();
+ exit(EXIT_SUCCESS);
+}
+
+static int parse_and_merge_config_file(const struct lls_command *cmd)
+{
+ int ret;
+ int cf_argc;
+ char **cf_argv;
+ char *cf, *errctx = NULL;
+ struct lls_parse_result **lprp, *cf_lpr, *merged_lpr;
+ void *map;
+ size_t sz;
+ const char *subcmd_name;
+
+ if (cmd == lls_cmd(0, mixer_suite)) {
+ lprp = &lpr;
+ subcmd_name = NULL;
+ } else {
+ lprp = &sub_lpr;
+ subcmd_name = lls_command_name(cmd);
+ }
+ if (OPT_GIVEN(PARA_MIXER, CONFIG_FILE))
+ cf = para_strdup(OPT_STRING_VAL(PARA_MIXER, CONFIG_FILE));
+ else {
+ char *home = para_homedir();
+ cf = make_message("%s/.paraslash/mixer.conf", home);
+ free(home);
+ }
+ ret = mmap_full_file(cf, O_RDONLY, &map, &sz, NULL);
+ if (ret < 0) {
+ if (ret != -E_EMPTY && ret != -ERRNO_TO_PARA_ERROR(ENOENT))
+ goto free_cf;
+ if (ret == -ERRNO_TO_PARA_ERROR(ENOENT) &&
+ OPT_GIVEN(PARA_MIXER, CONFIG_FILE))
+ goto free_cf;
+ } else {
+ ret = lls(lls_convert_config(map, sz, subcmd_name, &cf_argv, &errctx));
+ para_munmap(map, sz);
+ if (ret < 0)
+ goto free_cf;
+ cf_argc = ret;
+ ret = lls(lls_parse(cf_argc, cf_argv, cmd, &cf_lpr, &errctx));
+ lls_free_argv(cf_argv);
+ if (ret < 0)
+ goto free_cf;
+ ret = lls(lls_merge(*lprp, cf_lpr, cmd, &merged_lpr, &errctx));
+ lls_free_parse_result(cf_lpr, cmd);
+ if (ret < 0)
+ goto free_cf;
+ lls_free_parse_result(*lprp, cmd);
+ *lprp = merged_lpr;
+ loglevel = OPT_UINT32_VAL(PARA_MIXER, LOGLEVEL);
+ }
+ ret = 1;
+free_cf:
+ free(cf);
+ if (errctx)
+ PARA_ERROR_LOG("%s\n", errctx);
+ free(errctx);
+ return ret;
+}
+
+/**
+ * The main function of para_mixer.
+ *
+ * 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[])
+{
+ const struct lls_command *cmd = CMD_PTR(PARA_MIXER);
+ int ret;
+ char *errctx;
+ const char *subcmd;
+ struct mixer *m;
+ struct mixer_handle *h;
+ unsigned n;
+
+ ret = lls(lls_parse(argc, argv, cmd, &lpr, &errctx));
+ if (ret < 0)
+ goto fail;
+ loglevel = OPT_UINT32_VAL(PARA_MIXER, LOGLEVEL);
+ version_handle_flag("mixer", OPT_GIVEN(PARA_MIXER, VERSION));
+ handle_help_flags();
+
+ n = lls_num_inputs(lpr);
+ if (n == 0) {
+ show_subcommands();
+ ret = 0;
+ goto free_lpr;
+ }
+ ret = parse_and_merge_config_file(cmd);
+ if (ret < 0)
+ goto free_lpr;
+ subcmd = lls_input(0, lpr);
+ ret = lls(lls_lookup_subcmd(subcmd, mixer_suite, &errctx));
+ if (ret < 0)
+ goto fail;
+ cmd = lls_cmd(ret, mixer_suite);
+ ret = lls(lls_parse(n, argv + argc - n, cmd, &sub_lpr, &errctx));
+ if (ret < 0)
+ goto free_lpr;
+ ret = parse_and_merge_config_file(cmd);
+ if (ret < 0)
+ goto free_lpr;
+ init_mixers();
+ m = get_mixer_or_die();
+ ret = m->open(OPT_STRING_VAL(PARA_MIXER, MIXER_DEVICE), &h);
+ if (ret < 0)
+ goto free_sub_lpr;
+ ret = set_channel(m, h, OPT_STRING_VAL(PARA_MIXER, MIXER_CHANNEL));
+ if (ret == -E_BAD_CHANNEL) {
+ char *channels = m->get_channels(h);
+ printf("Available channels: %s\n", channels);
+ free(channels);
+ }
+ if (ret < 0)
+ goto close_mixer;
+ ret = (*(mixer_subcommand_handler_t *)(lls_user_data(cmd)))(m ,h);
+close_mixer:
+ m->close(&h);
+free_sub_lpr:
+ lls_free_parse_result(sub_lpr, cmd);
+free_lpr:
+ lls_free_parse_result(lpr, CMD_PTR(PARA_MIXER));
+ if (ret >= 0)
+ return EXIT_SUCCESS;
+fail:
+ if (errctx)
+ PARA_ERROR_LOG("%s\n", errctx);
+ free(errctx);
+ PARA_EMERG_LOG("%s\n", para_strerror(-ret));
+ return EXIT_FAILURE;
+}
projects / paraslash.git / commitdiff