/* * Copyright (C) 2003-2009 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. */ /* * Saving and loading the playlist to/from the state file. * */ #include "config.h" #include "playlist_state.h" #include "playlist.h" #include "player_control.h" #include "queue_save.h" #include "path.h" #include <string.h> #include <stdlib.h> #define PLAYLIST_STATE_FILE_STATE "state: " #define PLAYLIST_STATE_FILE_RANDOM "random: " #define PLAYLIST_STATE_FILE_REPEAT "repeat: " #define PLAYLIST_STATE_FILE_SINGLE "single: " #define PLAYLIST_STATE_FILE_CONSUME "consume: " #define PLAYLIST_STATE_FILE_CURRENT "current: " #define PLAYLIST_STATE_FILE_TIME "time: " #define PLAYLIST_STATE_FILE_CROSSFADE "crossfade: " #define PLAYLIST_STATE_FILE_PLAYLIST_BEGIN "playlist_begin" #define PLAYLIST_STATE_FILE_PLAYLIST_END "playlist_end" #define PLAYLIST_STATE_FILE_STATE_PLAY "play" #define PLAYLIST_STATE_FILE_STATE_PAUSE "pause" #define PLAYLIST_STATE_FILE_STATE_STOP "stop" #define PLAYLIST_BUFFER_SIZE 2*MPD_PATH_MAX void playlist_state_save(FILE *fp, const struct playlist *playlist) { struct player_status player_status; pc_get_status(&player_status); fprintf(fp, "%s", PLAYLIST_STATE_FILE_STATE); if (playlist->playing) { switch (player_status.state) { case PLAYER_STATE_PAUSE: fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_STATE_PAUSE); break; default: fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_STATE_PLAY); } fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_CURRENT, queue_order_to_position(&playlist->queue, playlist->current)); fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_TIME, (int)player_status.elapsed_time); } else { fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_STATE_STOP); if (playlist->current >= 0) fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_CURRENT, queue_order_to_position(&playlist->queue, playlist->current)); } fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_RANDOM, playlist->queue.random); fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_REPEAT, playlist->queue.repeat); fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_SINGLE, playlist->queue.single); fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_CONSUME, playlist->queue.consume); fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_CROSSFADE, (int)(pc_get_cross_fade())); fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_PLAYLIST_BEGIN); queue_save(fp, &playlist->queue); fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_PLAYLIST_END); } static void playlist_state_load(FILE *fp, struct playlist *playlist, char *buffer) { int song; if (!fgets(buffer, PLAYLIST_BUFFER_SIZE, fp)) { g_warning("No playlist in state file"); return; } while (!g_str_has_prefix(buffer, PLAYLIST_STATE_FILE_PLAYLIST_END)) { g_strchomp(buffer); song = queue_load_song(&playlist->queue, buffer); if (!fgets(buffer, PLAYLIST_BUFFER_SIZE, fp)) { g_warning("'%s' not found in state file", PLAYLIST_STATE_FILE_PLAYLIST_END); break; } } queue_increment_version(&playlist->queue); } bool playlist_state_restore(const char *line, FILE *fp, struct playlist *playlist) { int current = -1; int seek_time = 0; int state = PLAYER_STATE_STOP; char buffer[PLAYLIST_BUFFER_SIZE]; bool random_mode = false; if (!g_str_has_prefix(line, PLAYLIST_STATE_FILE_STATE)) return false; line += sizeof(PLAYLIST_STATE_FILE_STATE) - 1; if (strcmp(line, PLAYLIST_STATE_FILE_STATE_PLAY) == 0) state = PLAYER_STATE_PLAY; else if (strcmp(line, PLAYLIST_STATE_FILE_STATE_PAUSE) == 0) state = PLAYER_STATE_PAUSE; while (fgets(buffer, sizeof(buffer), fp)) { g_strchomp(buffer); if (g_str_has_prefix(buffer, PLAYLIST_STATE_FILE_TIME)) { seek_time = atoi(&(buffer[strlen(PLAYLIST_STATE_FILE_TIME)])); } else if (g_str_has_prefix(buffer, PLAYLIST_STATE_FILE_REPEAT)) { if (strcmp (&(buffer[strlen(PLAYLIST_STATE_FILE_REPEAT)]), "1") == 0) { playlist_set_repeat(playlist, true); } else playlist_set_repeat(playlist, false); } else if (g_str_has_prefix(buffer, PLAYLIST_STATE_FILE_SINGLE)) { if (strcmp (&(buffer[strlen(PLAYLIST_STATE_FILE_SINGLE)]), "1") == 0) { playlist_set_single(playlist, true); } else playlist_set_single(playlist, false); } else if (g_str_has_prefix(buffer, PLAYLIST_STATE_FILE_CONSUME)) { if (strcmp (&(buffer[strlen(PLAYLIST_STATE_FILE_CONSUME)]), "1") == 0) { playlist_set_consume(playlist, true); } else playlist_set_consume(playlist, false); } else if (g_str_has_prefix(buffer, PLAYLIST_STATE_FILE_CROSSFADE)) { pc_set_cross_fade(atoi(buffer + strlen(PLAYLIST_STATE_FILE_CROSSFADE))); } else if (g_str_has_prefix(buffer, PLAYLIST_STATE_FILE_RANDOM)) { random_mode = strcmp(buffer + strlen(PLAYLIST_STATE_FILE_RANDOM), "1") == 0; } else if (g_str_has_prefix(buffer, PLAYLIST_STATE_FILE_CURRENT)) { current = atoi(&(buffer [strlen (PLAYLIST_STATE_FILE_CURRENT)])); } else if (g_str_has_prefix(buffer, PLAYLIST_STATE_FILE_PLAYLIST_BEGIN)) { playlist_state_load(fp, playlist, buffer); } } playlist_set_random(playlist, random_mode); if (!queue_is_empty(&playlist->queue)) { if (!queue_valid_position(&playlist->queue, current)) current = 0; /* enable all devices for the first time; this must be called here, after the audio output states were restored, before playback begins */ if (state != PLAYER_STATE_STOP) pc_update_audio(); if (state == PLAYER_STATE_STOP /* && config_option */) playlist->current = current; else if (seek_time == 0) playlist_play(playlist, current); else playlist_seek_song(playlist, current, seek_time); if (state == PLAYER_STATE_PAUSE) pc_pause(); } return true; } unsigned playlist_state_get_hash(const struct playlist *playlist) { struct player_status player_status; pc_get_status(&player_status); return playlist->queue.version ^ (player_status.state != PLAYER_STATE_STOP ? ((int)player_status.elapsed_time << 8) : 0) ^ (playlist->current >= 0 ? (queue_order_to_position(&playlist->queue, playlist->current) << 16) : 0) ^ ((int)pc_get_cross_fade() << 20) ^ (player_status.state << 24) ^ (playlist->queue.random << 27) ^ (playlist->queue.repeat << 28) ^ (playlist->queue.single << 29) ^ (playlist->queue.consume << 30) ^ (playlist->queue.random << 31); }