diff options
Diffstat (limited to 'src/playlist/plugins')
| -rw-r--r-- | src/playlist/plugins/FlacPlaylistPlugin.cxx | 135 | ||||
| -rw-r--r-- | src/playlist/plugins/FlacPlaylistPlugin.hxx | 25 |
2 files changed, 160 insertions, 0 deletions
diff --git a/src/playlist/plugins/FlacPlaylistPlugin.cxx b/src/playlist/plugins/FlacPlaylistPlugin.cxx new file mode 100644 index 000000000..19b77ef32 --- /dev/null +++ b/src/playlist/plugins/FlacPlaylistPlugin.cxx @@ -0,0 +1,135 @@ +/* + * Copyright (C) 2003-2015 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. + */ + +/** \file + * + * Playlist plugin that reads embedded cue sheets from the "CUESHEET" + * tag of a music file. + */ + +#include "config.h" +#include "FlacPlaylistPlugin.hxx" +#include "../PlaylistPlugin.hxx" +#include "../SongEnumerator.hxx" +#include "DetachedSong.hxx" +#include "fs/Traits.hxx" +#include "fs/AllocatedPath.hxx" +#include "fs/NarrowPath.hxx" + +#include <FLAC/metadata.h> + +#include <string.h> + +class FlacPlaylist final : public SongEnumerator { + const char *const uri; + + FLAC__StreamMetadata *const cuesheet; + const unsigned sample_rate; + const FLAC__uint64 total_samples; + + unsigned next_track = 0; + +public: + FlacPlaylist(const char *_uri, + FLAC__StreamMetadata *_cuesheet, + const FLAC__StreamMetadata &streaminfo) + :uri(_uri), cuesheet(_cuesheet), + sample_rate(streaminfo.data.stream_info.sample_rate), + total_samples(streaminfo.data.stream_info.total_samples) { + } + + virtual ~FlacPlaylist() { + FLAC__metadata_object_delete(cuesheet); + } + + virtual DetachedSong *NextSong() override; +}; + +DetachedSong * +FlacPlaylist::NextSong() +{ + const FLAC__StreamMetadata_CueSheet &c = cuesheet->data.cue_sheet; + + /* find the next audio track */ + + while (next_track < c.num_tracks && + (c.tracks[next_track].number > c.num_tracks || + c.tracks[next_track].type != 0)) + ++next_track; + + if (next_track >= c.num_tracks) + return nullptr; + + FLAC__uint64 start = c.tracks[next_track].offset; + ++next_track; + FLAC__uint64 end = next_track < c.num_tracks + ? c.tracks[next_track].offset + : total_samples; + + auto *song = new DetachedSong(uri); + song->SetStartTime(SongTime::FromScale(start, sample_rate)); + song->SetEndTime(SongTime::FromScale(end, sample_rate)); + return song; +} + +static SongEnumerator * +flac_playlist_open_uri(const char *uri, + gcc_unused Mutex &mutex, gcc_unused Cond &cond) +{ + if (!PathTraitsUTF8::IsAbsolute(uri)) + /* only local files supported */ + return nullptr; + + const auto path_fs = AllocatedPath::FromUTF8(uri); + if (path_fs.IsNull()) + return nullptr; + + const NarrowPath narrow_path_fs(path_fs); + + FLAC__StreamMetadata *cuesheet; + if (!FLAC__metadata_get_cuesheet(narrow_path_fs, &cuesheet)) + return nullptr; + + FLAC__StreamMetadata streaminfo; + if (!FLAC__metadata_get_streaminfo(uri, &streaminfo) || + streaminfo.data.stream_info.sample_rate == 0) { + FLAC__metadata_object_delete(cuesheet); + return nullptr; + } + + return new FlacPlaylist(uri, cuesheet, streaminfo); +} + +static const char *const flac_playlist_suffixes[] = { + "flac", + nullptr +}; + +const struct playlist_plugin flac_playlist_plugin = { + "flac", + + nullptr, + nullptr, + flac_playlist_open_uri, + nullptr, + + nullptr, + flac_playlist_suffixes, + nullptr, +}; diff --git a/src/playlist/plugins/FlacPlaylistPlugin.hxx b/src/playlist/plugins/FlacPlaylistPlugin.hxx new file mode 100644 index 000000000..632be6b12 --- /dev/null +++ b/src/playlist/plugins/FlacPlaylistPlugin.hxx @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2003-2015 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. + */ + +#ifndef MPD_FLAC_PLAYLIST_PLUGIN_HXX +#define MPD_FLAC_PLAYLIST_PLUGIN_HXX + +extern const struct playlist_plugin flac_playlist_plugin; + +#endif |