nathan@0: /*
nathan@0:  * MP3/MPlayer plugin to VDR (C++)
nathan@0:  *
nathan@2:  * (C) 2001-2007 Stefan Huelswitt <s.huelswitt@gmx.de>
nathan@0:  *
nathan@0:  * This code is free software; you can redistribute it and/or
nathan@0:  * modify it under the terms of the GNU General Public License
nathan@0:  * as published by the Free Software Foundation; either version 2
nathan@0:  * of the License, or (at your option) any later version.
nathan@0:  *
nathan@0:  * This code is distributed in the hope that it will be useful,
nathan@0:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nathan@0:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nathan@0:  * GNU General Public License for more details.
nathan@0:  *
nathan@0:  * You should have received a copy of the GNU General Public License
nathan@0:  * along with this program; if not, write to the Free Software
nathan@0:  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
nathan@0:  * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
nathan@0:  */
nathan@0: 
nathan@0: #ifndef ___DECODER_H
nathan@0: #define ___DECODER_H
nathan@0: 
nathan@0: #include <vdr/thread.h>
nathan@0: #include <vdr/tools.h>
nathan@0: 
nathan@0: // ----------------------------------------------------------------
nathan@0: 
nathan@0: class cCacheData;
nathan@0: class cFileObj;
nathan@0: 
nathan@0: extern int MakeHashBuff(const char *buff, int len);
nathan@0: #define MakeHash(str) MakeHashBuff((str),strlen(str))
nathan@0: 
nathan@0: // ----------------------------------------------------------------
nathan@0: 
nathan@0: class cSongInfo {
nathan@0: private:
nathan@0:   bool infoDone;
nathan@0: protected:
nathan@0:   void Clear(void);
nathan@0:   void Set(cSongInfo *si);
nathan@0:   void FakeTitle(const char *filename, const char *extention=0);
nathan@0:   void InfoDone(void) { infoDone=true; }
nathan@0: public:
nathan@0:   cSongInfo(void);
nathan@0:   ~cSongInfo();
nathan@0:   bool HasInfo(void) { return infoDone; }
nathan@0:   // Song
nathan@0:   char *Title, *Artist, *Album;
nathan@0:   int Year, Frames, Total;
nathan@0:   int SampleFreq, Channels, Bitrate, MaxBitrate, ChMode;
nathan@0:   // Normalize
nathan@0:   double Level, Peak;
nathan@0:   // Decoder
nathan@0:   int DecoderID;
nathan@0:   };
nathan@0: 
nathan@0: // ----------------------------------------------------------------
nathan@0: 
nathan@0: class cFileInfo {
nathan@0: private:
nathan@0:   bool infoDone;
nathan@0:   int removable;
nathan@0: protected:
nathan@0:   void Clear(void);
nathan@0:   void Set(cFileInfo *fi);
nathan@0:   void InfoDone(void) { infoDone=true; }
nathan@0: public:
nathan@0:   cFileInfo(void);
nathan@0:   cFileInfo(const char *Name);
nathan@0:   ~cFileInfo();
nathan@0:   bool FileInfo(bool log=true);
nathan@0:   bool HasInfo(void) { return infoDone; }
nathan@0:   bool Removable(void);
nathan@0:   //
nathan@0:   char *Filename, *FsID;
nathan@0:   unsigned long long Filesize;
nathan@0:   time_t CTime;
nathan@0:   long FsType;
nathan@0:   };
nathan@0: 
nathan@0: // ----------------------------------------------------------------
nathan@0: 
nathan@0: class cPlayInfo {
nathan@0: public:
nathan@0:   int Index, Total;
nathan@0:   };
nathan@0: 
nathan@0: // ----------------------------------------------------------------
nathan@0: 
nathan@0: class cDecoder {
nathan@0: protected:
nathan@0:   char *filename;
nathan@0:   cMutex lock, locklock;
nathan@0:   int locked;
nathan@0:   bool urgentLock;
nathan@0:   //
nathan@0:   cPlayInfo pi;
nathan@0:   bool playing;
nathan@0:   //
nathan@0:   void Lock(bool urgent=false);
nathan@0:   void Unlock(void);
nathan@0:   bool TryLock(void);
nathan@0: public:
nathan@0:   cDecoder(const char *Filename);
nathan@0:   virtual ~cDecoder();
nathan@0:   //
nathan@0:   virtual cFileInfo *FileInfo(void) { return 0; }
nathan@0:   virtual cSongInfo *SongInfo(bool get) { return 0; }
nathan@0:   virtual cPlayInfo *PlayInfo(void) { return 0; }
nathan@0:   //
nathan@0:   virtual bool Valid(void)=0;
nathan@0:   virtual bool IsStream(void) { return false; }
nathan@0:   virtual bool Start(void)=0;
nathan@0:   virtual bool Stop(void)=0;
nathan@0:   virtual bool Skip(int Seconds, float bsecs) { return false; }
nathan@0:   virtual struct Decode *Decode(void)=0;
nathan@0:   };
nathan@0:   
nathan@0: // ----------------------------------------------------------------
nathan@0: 
nathan@0: class cDecoders {
nathan@0: public:
nathan@0:   static cDecoder *FindDecoder(cFileObj *Obj);
nathan@0:   static const char *ID2Str(int id);
nathan@0:   static int Str2ID(const char *str);
nathan@0:   };
nathan@0: 
nathan@0: // ----------------------------------------------------------------
nathan@0: 
nathan@0: #define CACHELINES 32
nathan@0: 
nathan@0: class cInfoCache : public cThread {
nathan@0: private:
nathan@0:   cMutex lock;
nathan@0:   cList<cCacheData> lists[CACHELINES];
nathan@0:   time_t lasttime, lastpurge;
nathan@0:   bool modified, lastmod;
nathan@0:   //
nathan@0:   char *CacheFile(void);
nathan@0:   void AddEntry(cCacheData *dat);
nathan@0:   void DelEntry(cCacheData *dat);
nathan@0:   cCacheData *FirstEntry(int hash);
nathan@0:   void Modified(void) { modified=lastmod=true; }
nathan@0: protected:
nathan@0:   virtual void Action(void);
nathan@0: public:
nathan@0:   cInfoCache(void);
nathan@2:   void Shutdown(void);
nathan@0:   void Save(bool force=false);
nathan@0:   void Load(void);
nathan@0:   bool Purge(void);
nathan@0:   void Cache(cSongInfo *info, cFileInfo *file);
nathan@0:   cCacheData *Search(cFileInfo *file);
nathan@0:   };
nathan@0: 
nathan@0: extern cInfoCache InfoCache;
nathan@0: extern char *cachedir;
nathan@0: 
nathan@0: #endif //___DECODER_H