change version to 0.6.4_pre
[ncmpcpp.git] / src / lyrics.h
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1 /***************************************************************************
2 * Copyright (C) 2008-2014 by Andrzej Rybczak *
3 * electricityispower@gmail.com *
4 * *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
21 #ifndef NCMPCPP_LYRICS_H
22 #define NCMPCPP_LYRICS_H
24 #include <pthread.h>
25 #include <queue>
27 #include "interfaces.h"
28 #include "lyrics_fetcher.h"
29 #include "screen.h"
30 #include "song.h"
32 struct Lyrics: Screen<NC::Scrollpad>, Tabbable
34 Lyrics();
36 // Screen<NC::Scrollpad> implementation
37 virtual void resize() OVERRIDE;
38 virtual void switchTo() OVERRIDE;
40 virtual std::wstring title() OVERRIDE;
41 virtual ScreenType type() OVERRIDE { return ScreenType::Lyrics; }
43 virtual void update() OVERRIDE;
45 virtual void enterPressed() OVERRIDE { }
46 virtual void spacePressed() OVERRIDE;
48 virtual bool isMergable() OVERRIDE { return true; }
50 // private members
51 bool SetSong(const MPD::Song &s);
52 void Edit();
54 # ifdef HAVE_CURL_CURL_H
55 void Refetch();
57 static void ToggleFetcher();
58 static void DownloadInBackground(const MPD::Song &s);
59 # endif // HAVE_CURL_CURL_H
61 bool Reload;
63 protected:
64 virtual bool isLockable() OVERRIDE { return false; }
66 private:
67 void Load();
69 # ifdef HAVE_CURL_CURL_H
70 static void *DownloadInBackgroundImpl(void *song_ptr);
71 static void DownloadInBackgroundImplHelper(const MPD::Song &s);
72 // lock for allowing exclusive access to itsToDownload and itsWorkersNumber
73 static pthread_mutex_t itsDIBLock;
74 // storage for songs for which lyrics are scheduled to be downloaded
75 static std::queue<MPD::Song *> itsToDownload;
76 // current worker threads (ie. downloading lyrics)
77 static size_t itsWorkersNumber;
78 // maximum number of worker threads. if it's reached, next lyrics requests
79 // are put into itsToDownload queue.
80 static const size_t itsMaxWorkersNumber = 4;
82 void *Download();
83 static void *DownloadWrapper(void *);
84 static void Save(const std::string &filename, const std::string &lyrics);
86 void Take();
87 bool isReadyToTake;
88 bool isDownloadInProgress;
89 pthread_t itsDownloader;
91 static LyricsFetcher **itsFetcher;
92 # endif // HAVE_CURL_CURL_H
94 size_t itsScrollBegin;
95 MPD::Song itsSong;
96 std::string itsFilename;
98 static std::string GenerateFilename(const MPD::Song &s);
101 extern Lyrics *myLyrics;
103 #endif // NCMPCPP_LYRICS_H