mpd/src/main.c
Max Kellermann 393bcd961a inotify: added setting "auto_update_depth"
Limits the depth of the watched directories.  This is useful to keep
resource usage down and speed up MPD startup.
2010-04-13 21:31:57 +02:00

454 lines
9.3 KiB
C

/*
* Copyright (C) 2003-2010 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "main.h"
#include "daemon.h"
#include "client.h"
#include "idle.h"
#include "command.h"
#include "playlist.h"
#include "stored_playlist.h"
#include "database.h"
#include "update.h"
#include "player_thread.h"
#include "listen.h"
#include "cmdline.h"
#include "conf.h"
#include "path.h"
#include "mapper.h"
#include "chunk.h"
#include "player_control.h"
#include "stats.h"
#include "sig_handlers.h"
#include "audio.h"
#include "output_all.h"
#include "volume.h"
#include "log.h"
#include "permission.h"
#include "replay_gain_config.h"
#include "decoder_list.h"
#include "input_init.h"
#include "playlist_list.h"
#include "state_file.h"
#include "tag.h"
#include "dbUtils.h"
#include "zeroconf.h"
#include "event_pipe.h"
#include "dirvec.h"
#include "songvec.h"
#include "tag_pool.h"
#ifdef ENABLE_INOTIFY
#include "inotify_update.h"
#endif
#ifdef ENABLE_SQLITE
#include "sticker.h"
#endif
#ifdef ENABLE_ARCHIVE
#include "archive_list.h"
#endif
#include <glib.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#ifdef WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
enum {
DEFAULT_BUFFER_SIZE = 2048,
DEFAULT_BUFFER_BEFORE_PLAY = 10,
};
GThread *main_task;
GMainLoop *main_loop;
GCond *main_cond;
static void
glue_daemonize_init(const struct options *options)
{
daemonize_init(config_get_string(CONF_USER, NULL),
config_get_string(CONF_GROUP, NULL),
config_get_path(CONF_PID_FILE));
if (options->kill)
daemonize_kill();
}
static void
glue_mapper_init(void)
{
const char *music_dir, *playlist_dir;
music_dir = config_get_path(CONF_MUSIC_DIR);
#if GLIB_CHECK_VERSION(2,14,0)
if (music_dir == NULL)
music_dir = g_get_user_special_dir(G_USER_DIRECTORY_MUSIC);
#endif
playlist_dir = config_get_path(CONF_PLAYLIST_DIR);
mapper_init(music_dir, playlist_dir);
}
/**
* Returns the database. If this function returns false, this has not
* succeeded, and the caller should create the database after the
* process has been daemonized.
*/
static bool
glue_db_init_and_load(void)
{
const char *path = config_get_path(CONF_DB_FILE);
bool ret;
GError *error = NULL;
if (!mapper_has_music_directory()) {
if (path != NULL)
g_message("Found " CONF_DB_FILE " setting without "
CONF_MUSIC_DIR " - disabling database");
db_init(NULL);
return true;
}
if (path == NULL)
g_error(CONF_DB_FILE " setting missing");
db_init(path);
ret = db_load(&error);
if (!ret) {
g_warning("Failed to load database: %s", error->message);
g_error_free(error);
if (!db_check())
exit(EXIT_FAILURE);
db_clear();
/* run database update after daemonization */
return false;
}
return true;
}
/**
* Configure and initialize the sticker subsystem.
*/
static void
glue_sticker_init(void)
{
#ifdef ENABLE_SQLITE
bool success;
GError *error = NULL;
success = sticker_global_init(config_get_path(CONF_STICKER_FILE),
&error);
if (!success)
g_error("%s", error->message);
#endif
}
static void
glue_state_file_init(void)
{
state_file_init(config_get_path(CONF_STATE_FILE));
}
/**
* Windows-only initialization of the Winsock2 library.
*/
static void winsock_init(void)
{
#ifdef WIN32
WSADATA sockinfo;
int retval;
retval = WSAStartup(MAKEWORD(2, 2), &sockinfo);
if(retval != 0)
{
g_error("Attempt to open Winsock2 failed; error code %d\n",
retval);
}
if (LOBYTE(sockinfo.wVersion) != 2)
{
g_error("We use Winsock2 but your version is either too new or "
"old; please install Winsock 2.x\n");
}
#endif
}
/**
* Initialize the decoder and player core, including the music pipe.
*/
static void
initialize_decoder_and_player(void)
{
const struct config_param *param;
char *test;
size_t buffer_size;
float perc;
unsigned buffered_chunks;
unsigned buffered_before_play;
param = config_get_param(CONF_AUDIO_BUFFER_SIZE);
if (param != NULL) {
buffer_size = strtol(param->value, &test, 10);
if (*test != '\0' || buffer_size <= 0)
g_error("buffer size \"%s\" is not a positive integer, "
"line %i\n", param->value, param->line);
} else
buffer_size = DEFAULT_BUFFER_SIZE;
buffer_size *= 1024;
buffered_chunks = buffer_size / CHUNK_SIZE;
if (buffered_chunks >= 1 << 15)
g_error("buffer size \"%li\" is too big\n", (long)buffer_size);
param = config_get_param(CONF_BUFFER_BEFORE_PLAY);
if (param != NULL) {
perc = strtod(param->value, &test);
if (*test != '%' || perc < 0 || perc > 100) {
g_error("buffered before play \"%s\" is not a positive "
"percentage and less than 100 percent, line %i",
param->value, param->line);
}
} else
perc = DEFAULT_BUFFER_BEFORE_PLAY;
buffered_before_play = (perc / 100) * buffered_chunks;
if (buffered_before_play > buffered_chunks)
buffered_before_play = buffered_chunks;
pc_init(buffered_chunks, buffered_before_play);
}
/**
* event_pipe callback function for PIPE_EVENT_IDLE
*/
static void
idle_event_emitted(void)
{
/* send "idle" notificaions to all subscribed
clients */
unsigned flags = idle_get();
if (flags != 0)
client_manager_idle_add(flags);
}
int main(int argc, char *argv[])
{
struct options options;
clock_t start;
bool create_db;
GError *error = NULL;
bool success;
daemonize_close_stdin();
#ifdef HAVE_LOCALE_H
/* initialize locale */
setlocale(LC_CTYPE,"");
#endif
g_set_application_name("Music Player Daemon");
/* enable GLib's thread safety code */
g_thread_init(NULL);
winsock_init();
idle_init();
dirvec_init();
songvec_init();
tag_pool_init();
config_global_init();
success = parse_cmdline(argc, argv, &options, &error);
if (!success) {
g_warning("%s", error->message);
g_error_free(error);
return EXIT_FAILURE;
}
glue_daemonize_init(&options);
stats_global_init();
tag_lib_init();
log_init(options.verbose, options.log_stderr);
success = listen_global_init(&error);
if (!success) {
g_warning("%s", error->message);
g_error_free(error);
return EXIT_FAILURE;
}
daemonize_set_user();
main_task = g_thread_self();
main_loop = g_main_loop_new(NULL, FALSE);
main_cond = g_cond_new();
event_pipe_init();
event_pipe_register(PIPE_EVENT_IDLE, idle_event_emitted);
path_global_init();
glue_mapper_init();
initPermissions();
playlist_global_init();
spl_global_init();
#ifdef ENABLE_ARCHIVE
archive_plugin_init_all();
#endif
decoder_plugin_init_all();
update_global_init();
create_db = !glue_db_init_and_load();
glue_sticker_init();
command_init();
initialize_decoder_and_player();
volume_init();
initAudioConfig();
audio_output_all_init();
client_manager_init();
replay_gain_global_init();
if (!input_stream_global_init(&error)) {
g_warning("%s", error->message);
g_error_free(error);
return EXIT_FAILURE;
}
playlist_list_global_init();
daemonize(options.daemon);
setup_log_output(options.log_stderr);
initSigHandlers();
initZeroconf();
player_create();
if (create_db) {
/* the database failed to load: recreate the
database */
unsigned job = update_enqueue(NULL, true);
if (job == 0)
g_error("directory update failed");
}
glue_state_file_init();
success = config_get_bool(CONF_AUTO_UPDATE, false);
#ifdef ENABLE_INOTIFY
if (success && mapper_has_music_directory())
mpd_inotify_init(config_get_unsigned(CONF_AUTO_UPDATE_DEPTH,
G_MAXUINT));
#else
if (success)
g_warning("inotify: auto_update was disabled. enable during compilation phase");
#endif
config_global_check();
/* enable all audio outputs (if not already done by
playlist_state_restore() */
pc_update_audio();
/* run the main loop */
g_main_loop_run(main_loop);
/* cleanup */
g_main_loop_unref(main_loop);
#ifdef ENABLE_INOTIFY
mpd_inotify_finish();
#endif
state_file_finish();
pc_kill();
finishZeroconf();
client_manager_deinit();
listen_global_finish();
playlist_global_finish();
start = clock();
db_finish();
g_debug("db_finish took %f seconds",
((float)(clock()-start))/CLOCKS_PER_SEC);
#ifdef ENABLE_SQLITE
sticker_global_finish();
#endif
g_cond_free(main_cond);
event_pipe_deinit();
playlist_list_global_finish();
input_stream_global_finish();
audio_output_all_finish();
volume_finish();
mapper_finish();
path_global_finish();
finishPermissions();
pc_deinit();
command_finish();
update_global_finish();
decoder_plugin_deinit_all();
#ifdef ENABLE_ARCHIVE
archive_plugin_deinit_all();
#endif
config_global_finish();
tag_pool_deinit();
songvec_deinit();
dirvec_deinit();
idle_deinit();
stats_global_finish();
daemonize_finish();
#ifdef WIN32
WSACleanup();
#endif
close_log_files();
return EXIT_SUCCESS;
}