184 lines
3.6 KiB
C++
184 lines
3.6 KiB
C++
/*
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* Copyright (C) 2003-2013 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.hxx"
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#include "Directory.hxx"
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#include "tag/Tag.hxx"
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#include "util/Alloc.hxx"
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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Directory detached_root;
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static 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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Song *song = (Song *)
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xalloc(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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Song *
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Song::NewRemote(const char *uri)
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{
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return song_alloc(uri, nullptr);
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}
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Song *
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Song::NewFile(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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Song *
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Song::ReplaceURI(const char *new_uri)
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{
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Song *new_song = song_alloc(new_uri, parent);
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new_song->tag = tag;
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new_song->mtime = mtime;
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new_song->start_ms = start_ms;
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new_song->end_ms = end_ms;
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free(this);
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return new_song;
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}
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Song *
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Song::NewDetached(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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Song *
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Song::DupDetached() const
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{
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Song *song;
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if (IsInDatabase()) {
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const auto new_uri = GetURI();
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song = NewDetached(new_uri.c_str());
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} else
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song = song_alloc(uri, nullptr);
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song->tag = tag != nullptr ? new Tag(*tag) : nullptr;
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song->mtime = mtime;
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song->start_ms = start_ms;
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song->end_ms = end_ms;
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return song;
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}
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void
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Song::Free()
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{
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delete tag;
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free(this);
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}
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void
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Song::ReplaceTag(Tag &&_tag)
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{
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if (tag == nullptr)
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tag = new Tag();
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*tag = std::move(_tag);
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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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SongEquals(const Song &a, const Song &b)
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{
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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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const auto au = a.GetURI();
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const auto bu = b.GetURI();
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return au == bu;
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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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std::string
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Song::GetURI() const
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{
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assert(*uri);
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if (!IsInDatabase() || parent->IsRoot())
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return std::string(uri);
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else {
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const char *path = parent->GetPath();
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std::string result;
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result.reserve(strlen(path) + 1 + strlen(uri));
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result.assign(path);
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result.push_back('/');
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result.append(uri);
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return result;
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}
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}
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double
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Song::GetDuration() const
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{
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if (end_ms > 0)
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return (end_ms - start_ms) / 1000.0;
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if (tag == nullptr)
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return 0;
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return tag->time - start_ms / 1000.0;
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}
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