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Diffstat (limited to '')
-rw-r--r-- | src/playlist/plugins/ExtM3uPlaylistPlugin.cxx | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/src/playlist/plugins/ExtM3uPlaylistPlugin.cxx b/src/playlist/plugins/ExtM3uPlaylistPlugin.cxx new file mode 100644 index 000000000..b459696f1 --- /dev/null +++ b/src/playlist/plugins/ExtM3uPlaylistPlugin.cxx @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2003-2014 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 "ExtM3uPlaylistPlugin.hxx" +#include "../PlaylistPlugin.hxx" +#include "../SongEnumerator.hxx" +#include "DetachedSong.hxx" +#include "tag/Tag.hxx" +#include "tag/TagBuilder.hxx" +#include "util/StringUtil.hxx" +#include "input/TextInputStream.hxx" + +#include <string.h> +#include <stdlib.h> + +class ExtM3uPlaylist final : public SongEnumerator { + TextInputStream tis; + +public: + ExtM3uPlaylist(InputStream &is) + :tis(is) { + } + + bool CheckFirstLine() { + const char *line = tis.ReadLine(); + return line != nullptr && strcmp(line, "#EXTM3U") == 0; + } + + virtual DetachedSong *NextSong() override; +}; + +static SongEnumerator * +extm3u_open_stream(InputStream &is) +{ + ExtM3uPlaylist *playlist = new ExtM3uPlaylist(is); + + if (!playlist->CheckFirstLine()) { + /* no EXTM3U header: fall back to the plain m3u + plugin */ + delete playlist; + return nullptr; + } + + return playlist; +} + +/** + * Parse a EXTINF line. + * + * @param line the rest of the input line after the colon + */ +static Tag +extm3u_parse_tag(const char *line) +{ + long duration; + char *endptr; + const char *name; + + duration = strtol(line, &endptr, 10); + if (endptr[0] != ',') + /* malformed line */ + return Tag(); + + if (duration < 0) + /* 0 means unknown duration */ + duration = 0; + + name = StripLeft(endptr + 1); + if (*name == 0 && duration == 0) + /* no information available; don't allocate a tag + object */ + return Tag(); + + TagBuilder tag; + tag.SetDuration(SignedSongTime::FromS(unsigned(duration))); + + /* unfortunately, there is no real specification for the + EXTM3U format, so we must assume that the string after the + comma is opaque, and is just the song name*/ + if (*name != 0) + tag.AddItem(TAG_NAME, name); + + return tag.Commit(); +} + +DetachedSong * +ExtM3uPlaylist::NextSong() +{ + Tag tag; + char *line_s; + + do { + line_s = tis.ReadLine(); + if (line_s == nullptr) + return nullptr; + + StripRight(line_s); + + if (StringStartsWith(line_s, "#EXTINF:")) { + tag = extm3u_parse_tag(line_s + 8); + continue; + } + + line_s = StripLeft(line_s); + } while (line_s[0] == '#' || *line_s == 0); + + return new DetachedSong(line_s, std::move(tag)); +} + +static const char *const extm3u_suffixes[] = { + "m3u", + nullptr +}; + +static const char *const extm3u_mime_types[] = { + "audio/x-mpegurl", + nullptr +}; + +const struct playlist_plugin extm3u_playlist_plugin = { + "extm3u", + + nullptr, + nullptr, + nullptr, + extm3u_open_stream, + + nullptr, + extm3u_suffixes, + extm3u_mime_types, +}; |