mpd/src/playlist/PlaylistQueue.cxx

85 lines
2.2 KiB
C++

/*
* Copyright 2003-2017 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 "PlaylistQueue.hxx"
#include "PlaylistAny.hxx"
#include "PlaylistSong.hxx"
#include "PlaylistError.hxx"
#include "queue/Playlist.hxx"
#include "SongEnumerator.hxx"
#include "song/DetachedSong.hxx"
#include "thread/Mutex.hxx"
#include "fs/Traits.hxx"
#ifdef ENABLE_DATABASE
#include "SongLoader.hxx"
#endif
#include <memory>
void
playlist_load_into_queue(const char *uri, SongEnumerator &e,
unsigned start_index, unsigned end_index,
playlist &dest, PlayerControl &pc,
const SongLoader &loader)
{
const std::string base_uri = uri != nullptr
? PathTraitsUTF8::GetParent(uri)
: std::string(".");
std::unique_ptr<DetachedSong> song;
for (unsigned i = 0;
i < end_index && (song = e.NextSong()) != nullptr;
++i) {
if (i < start_index) {
/* skip songs before the start index */
continue;
}
if (!playlist_check_translate_song(*song, base_uri.c_str(),
loader)) {
continue;
}
dest.AppendSong(pc, std::move(*song));
}
}
void
playlist_open_into_queue(const char *uri,
unsigned start_index, unsigned end_index,
playlist &dest, PlayerControl &pc,
const SongLoader &loader)
{
Mutex mutex;
auto playlist = playlist_open_any(uri,
#ifdef ENABLE_DATABASE
loader.GetStorage(),
#endif
mutex);
if (playlist == nullptr)
throw PlaylistError::NoSuchList();
playlist_load_into_queue(uri, *playlist,
start_index, end_index,
dest, pc, loader);
}