179 lines
3.8 KiB
C++
179 lines
3.8 KiB
C++
/*
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* Copyright (C) 2003-2011 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "song.h"
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#include "Directory.hxx"
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#include "tag.h"
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#include <glib.h>
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#include <assert.h>
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Directory detached_root;
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static struct song *
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song_alloc(const char *uri, Directory *parent)
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{
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size_t uri_length;
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assert(uri);
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uri_length = strlen(uri);
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assert(uri_length);
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struct song *song = (struct song *)
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g_malloc(sizeof(*song) - sizeof(song->uri) + uri_length + 1);
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song->tag = nullptr;
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memcpy(song->uri, uri, uri_length + 1);
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song->parent = parent;
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song->mtime = 0;
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song->start_ms = song->end_ms = 0;
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return song;
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}
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struct song *
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song_remote_new(const char *uri)
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{
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return song_alloc(uri, nullptr);
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}
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struct song *
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song_file_new(const char *path, Directory *parent)
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{
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assert((parent == nullptr) == (*path == '/'));
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return song_alloc(path, parent);
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}
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struct song *
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song_replace_uri(struct song *old_song, const char *uri)
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{
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struct song *new_song = song_alloc(uri, old_song->parent);
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new_song->tag = old_song->tag;
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new_song->mtime = old_song->mtime;
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new_song->start_ms = old_song->start_ms;
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new_song->end_ms = old_song->end_ms;
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g_free(old_song);
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return new_song;
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}
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struct song *
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song_detached_new(const char *uri)
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{
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assert(uri != nullptr);
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return song_alloc(uri, &detached_root);
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}
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struct song *
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song_dup_detached(const struct song *src)
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{
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assert(src != nullptr);
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struct song *song;
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if (song_in_database(src)) {
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char *uri = song_get_uri(src);
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song = song_detached_new(uri);
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g_free(uri);
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} else
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song = song_alloc(src->uri, nullptr);
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song->tag = tag_dup(src->tag);
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song->mtime = src->mtime;
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song->start_ms = src->start_ms;
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song->end_ms = src->end_ms;
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return song;
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}
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void
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song_free(struct song *song)
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{
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if (song->tag)
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tag_free(song->tag);
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g_free(song);
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}
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gcc_pure
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static inline bool
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directory_equals(const Directory &a, const Directory &b)
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{
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return strcmp(a.path, b.path) == 0;
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}
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gcc_pure
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static inline bool
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directory_is_same(const Directory *a, const Directory *b)
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{
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return a == b ||
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(a != nullptr && b != nullptr &&
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directory_equals(*a, *b));
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}
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bool
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song_equals(const struct song *a, const struct song *b)
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{
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assert(a != nullptr);
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assert(b != nullptr);
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if (a->parent != nullptr && b->parent != nullptr &&
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!directory_equals(*a->parent, *b->parent) &&
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(a->parent == &detached_root || b->parent == &detached_root)) {
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/* must compare the full URI if one of the objects is
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"detached" */
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char *au = song_get_uri(a);
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char *bu = song_get_uri(b);
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const bool result = strcmp(au, bu) == 0;
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g_free(bu);
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g_free(au);
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return result;
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}
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return directory_is_same(a->parent, b->parent) &&
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strcmp(a->uri, b->uri) == 0;
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}
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char *
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song_get_uri(const struct song *song)
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{
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assert(song != nullptr);
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assert(*song->uri);
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if (!song_in_database(song) || song->parent->IsRoot())
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return g_strdup(song->uri);
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else
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return g_strconcat(song->parent->GetPath(),
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"/", song->uri, nullptr);
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}
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double
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song_get_duration(const struct song *song)
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{
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if (song->end_ms > 0)
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return (song->end_ms - song->start_ms) / 1000.0;
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if (song->tag == nullptr)
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return 0;
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return song->tag->time - song->start_ms / 1000.0;
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}
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