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Diffstat (limited to '')
-rw-r--r-- | src/state_file.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/src/state_file.c b/src/state_file.c deleted file mode 100644 index de0e70538..000000000 --- a/src/state_file.c +++ /dev/null @@ -1,162 +0,0 @@ -/* - * Copyright (C) 2003-2011 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 "state_file.h" -#include "output_state.h" -#include "playlist.h" -#include "playlist_state.h" -#include "volume.h" -#include "text_file.h" - -#include <glib.h> -#include <assert.h> -#include <string.h> -#include <errno.h> - -#undef G_LOG_DOMAIN -#define G_LOG_DOMAIN "state_file" - -static char *state_file_path; - -/** the GLib source id for the save timer */ -static guint save_state_source_id; - -/** - * These version numbers determine whether we need to save the state - * file. If nothing has changed, we won't let the hard drive spin up. - */ -static unsigned prev_volume_version, prev_output_version, - prev_playlist_version; - -static void -state_file_write(struct player_control *pc) -{ - FILE *fp; - - assert(state_file_path != NULL); - - g_debug("Saving state file %s", state_file_path); - - fp = fopen(state_file_path, "w"); - if (G_UNLIKELY(!fp)) { - g_warning("failed to create %s: %s", - state_file_path, g_strerror(errno)); - return; - } - - save_sw_volume_state(fp); - audio_output_state_save(fp); - playlist_state_save(fp, &g_playlist, pc); - - fclose(fp); - - prev_volume_version = sw_volume_state_get_hash(); - prev_output_version = audio_output_state_get_version(); - prev_playlist_version = playlist_state_get_hash(&g_playlist, pc); -} - -static void -state_file_read(struct player_control *pc) -{ - FILE *fp; - bool success; - - assert(state_file_path != NULL); - - g_debug("Loading state file %s", state_file_path); - - fp = fopen(state_file_path, "r"); - if (G_UNLIKELY(!fp)) { - g_warning("failed to open %s: %s", - state_file_path, g_strerror(errno)); - return; - } - - GString *buffer = g_string_sized_new(1024); - const char *line; - while ((line = read_text_line(fp, buffer)) != NULL) { - success = read_sw_volume_state(line) || - audio_output_state_read(line) || - playlist_state_restore(line, fp, buffer, - &g_playlist, pc); - if (!success) - g_warning("Unrecognized line in state file: %s", line); - } - - fclose(fp); - - prev_volume_version = sw_volume_state_get_hash(); - prev_output_version = audio_output_state_get_version(); - prev_playlist_version = playlist_state_get_hash(&g_playlist, pc); - - - g_string_free(buffer, true); -} - -/** - * This function is called every 5 minutes by the GLib main loop, and - * saves the state file. - */ -static gboolean -timer_save_state_file(gpointer data) -{ - struct player_control *pc = data; - - if (prev_volume_version == sw_volume_state_get_hash() && - prev_output_version == audio_output_state_get_version() && - prev_playlist_version == playlist_state_get_hash(&g_playlist, pc)) - /* nothing has changed - don't save the state file, - don't spin up the hard disk */ - return true; - - state_file_write(pc); - return true; -} - -void -state_file_init(const char *path, struct player_control *pc) -{ - assert(state_file_path == NULL); - - if (path == NULL) - return; - - state_file_path = g_strdup(path); - state_file_read(pc); - - save_state_source_id = g_timeout_add_seconds(5 * 60, - timer_save_state_file, - pc); -} - -void -state_file_finish(struct player_control *pc) -{ - if (state_file_path == NULL) - /* no state file configured, no cleanup required */ - return; - - if (save_state_source_id != 0) - g_source_remove(save_state_source_id); - - state_file_write(pc); - - g_free(state_file_path); -} |