Removed the code for distributing recordings over several video directories; added the cVideoDirectory plugin API

HISTORY

@@ -7943,3 +7943,26 @@ Video Disk Recorder Revision History
   respectively, during replay (reported by Thomas Maass).
 - The Yellow button in the main menu no longer acts as "Pause" if "Pause key handling"
   is set to "do not pause live video" (suggested by Ulf Kiener).
+- The code for distributing recordings over several video directories has been
+  removed. VDR now by default assumes that the video directory is one big disk.
+  If you absolutely need to use several separate disks to store recordings, you can
+  write a plugin that uses the new cVideoDirectory API to implement the necessary
+  functionality (see PLUGINS.html, section "The video directory"). You can copy the
+  respective code from previous versions of videodir.c.
+  IMPORTANT NOTE: If you write a plugin that implements a distributed video directory,
+  =============== be sure to make cVideoDirectory::Rename() follow symbolic links!
+                  This functionality was never implemented in VDR and it therefore
+                  used a workaround in cutter.c. See the section marked with
+                  // XXX this can be removed once RenameVideoFile() follows symlinks
+                  in previous versions of cutter.c.
+  + CloseVideoFile() is obsolete and has been removed.
+  + The functions OpenVideoFile(), RenameVideoFile(), RemoveVideoFile(), VideoFileSpaceAvailable(),
+    VideoDiskSpace(), RemoveEmptyVideoDirectories(), IsOnVideoDirectoryFileSystem() and
+    PrefixVideoFileName() are now static members of cVideoDirectory and need to be called
+    with the proper prefix.
+  + The name of the video directory is now available through cVideoDirectory::Name().
+    The former global variable VideoDirectory is still there for backwards compatibility,
+    but will be removed in a future version. Comment out the line
+    #define DEPRECATED_VIDEODIR
+    in videodir.h and recompile your plugins to see whether your code will work without
+    this variable. If you get a compile error, replace it with cVideoDirectory::Name().

PLUGINS.html

@@ -104,6 +104,7 @@ structures and allows it to hook itself into specific areas to perform special a
 <li><a href="#Remote Control">Remote Control</a>
 <li><a href="#Conditional Access">Conditional Access</a>
 <li><a href="#Electronic Program Guide">Electronic Program Guide</a>
+<li><modified><a href="#The video directory">The video directory</a></modified>
 </ul>
 </ul>
 
@@ -2300,5 +2301,41 @@ to signal VDR that no other EPG handlers shall be queried after this one.
 <p>
 See <tt>VDR/epg.h</tt> for details.
 
+<div class="modified">
+<hr><h2><a name="The video directory">The video directory</a></h2>
+
+<div class="blurb">Bits and pieces...</div><p>
+
+By default VDR assumes that the video directory consists of one large
+volume, on which it can store its recordings. If you want to distribute your
+recordings over several physical drives, you can derive from <tt>cVideoDirectory</tt>,
+as in
+
+<p><table><tr><td class="code"><pre>
+#include &lt;vdr/videodir.h&gt;
+
+class cMyVideoDirectory : public cVideoDirectory {
+public:
+  cMyVideoDirectory(void);
+  virtual ~cMyVideoDirectory();
+  virtual int FreeMB(int *UsedMB = NULL);
+  virtual bool Register(const char *FileName);
+  virtual bool Rename(const char *OldName, const char *NewName);
+  virtual bool Move(const char *FromName, const char *ToName);
+  virtual bool Remove(const char *Name);
+  virtual void Cleanup(const char *IgnoreFiles[] = NULL);
+  virtual bool Contains(const char *Name);
+  };
+</pre></td></tr></table><p>
+
+See the description in <tt>videodir.h</tt> for details.
+<p>
+You should create your derived video directory object in the
+<a href="#Getting started"><tt>Start()</tt></a> function of your plugin.
+Note that the object has to be created on the heap (using <tt>new</tt>),
+and you shall not delete it at any point (it will be deleted automatically
+when the program ends).
+</div modified>
+
 </body>
 </html>

cutter.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: cutter.c 3.2 2013/08/21 13:15:24 kls Exp $
+ * $Id: cutter.c 3.3 2013/09/10 14:51:45 kls Exp $
  */
 
 #include "cutter.h"
@@ -664,19 +664,7 @@ bool cCutter::Start(const char *FileName)
         Recording.SetStartTime(Recording.Start() + (int(First->Position() / Recording.FramesPerSecond() + 30) / 60) * 60);
 
      const char *evn = Recording.PrefixFileName('%');
-     if (evn && RemoveVideoFile(evn) && MakeDirs(evn, true)) {
+     if (evn && cVideoDirectory::RemoveVideoFile(evn) && MakeDirs(evn, true)) {
-        // XXX this can be removed once RenameVideoFile() follows symlinks (see videodir.c)
-        // remove a possible deleted recording with the same name to avoid symlink mixups:
-        char *s = strdup(evn);
-        char *e = strrchr(s, '.');
-        if (e) {
-           if (strcmp(e, ".rec") == 0) {
-              strcpy(e, ".del");
-              RemoveVideoFile(s);
-              }
-           }
-        free(s);
-        // XXX
         editedVersionName = evn;
         Recording.WriteInfo();
         Recordings.AddByName(editedVersionName, false);
@@ -701,7 +689,7 @@ void cCutter::Stop(void)
         esyslog("ERROR: '%s' during editing process", Error);
      if (cReplayControl::NowReplaying() && strcmp(cReplayControl::NowReplaying(), editedVersionName) == 0)
         cControl::Shutdown();
-     RemoveVideoFile(editedVersionName);
+     cVideoDirectory::RemoveVideoFile(editedVersionName);
      Recordings.DelByName(editedVersionName);
      }
 }

menu.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: menu.c 3.5 2013/09/07 12:43:26 kls Exp $
+ * $Id: menu.c 3.6 2013/09/10 13:16:40 kls Exp $
  */
 
 #include "menu.h"
@@ -2316,7 +2316,7 @@ void cMenuRecordings::Set(bool Refresh)
 
 cString cMenuRecordings::DirectoryName(void)
 {
-  cString d(VideoDirectory);
+  cString d(cVideoDirectory::Name());
   if (base) {
      char *s = ExchangeChars(strdup(base), true);
      d = AddDirectory(d, s);
@@ -4342,7 +4342,7 @@ bool cRecordControls::Start(cTimer *Timer, bool Pause)
      AssertFreeDiskSpace(Timer->Priority(), !Timer->Pending());
      Timer->SetPending(true);
      }
-  VideoDiskSpace(&FreeMB);
+  cVideoDirectory::VideoDiskSpace(&FreeMB);
   if (FreeMB < MINFREEDISK) {
      if (!Timer || time(NULL) - LastNoDiskSpaceMessage > NODISKSPACEDELTA) {
         isyslog("not enough disk space to start recording%s%s", Timer ? " timer " : "", Timer ? *Timer->ToDescr() : "");

recording.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: recording.c 3.2 2013/08/21 13:56:33 kls Exp $
+ * $Id: recording.c 3.3 2013/09/11 08:28:27 kls Exp $
  */
 
 #include "recording.h"
@@ -90,7 +90,7 @@ cRemoveDeletedRecordingsThread::cRemoveDeletedRecordingsThread(void)
 void cRemoveDeletedRecordingsThread::Action(void)
 {
   // Make sure only one instance of VDR does this:
-  cLockFile LockFile(VideoDirectory);
+  cLockFile LockFile(cVideoDirectory::Name());
   if (LockFile.Lock()) {
      bool deleted = false;
      cThreadLock DeletedRecordingsLock(&DeletedRecordings);
@@ -109,7 +109,7 @@ void cRemoveDeletedRecordingsThread::Action(void)
          }
      if (deleted) {
         const char *IgnoreFiles[] = { SORTMODEFILE, NULL };
-        RemoveEmptyVideoDirectories(IgnoreFiles);
+        cVideoDirectory::RemoveEmptyVideoDirectories(IgnoreFiles);
         }
      }
 }
@@ -145,9 +145,9 @@ void AssertFreeDiskSpace(int Priority, bool Force)
   static time_t LastFreeDiskCheck = 0;
   int Factor = (Priority == -1) ? 10 : 1;
   if (Force || time(NULL) - LastFreeDiskCheck > DISKCHECKDELTA / Factor) {
-     if (!VideoFileSpaceAvailable(MINDISKSPACE)) {
+     if (!cVideoDirectory::VideoFileSpaceAvailable(MINDISKSPACE)) {
         // Make sure only one instance of VDR does this:
-        cLockFile LockFile(VideoDirectory);
+        cLockFile LockFile(cVideoDirectory::Name());
         if (!LockFile.Lock())
            return;
         // Remove the oldest file that has been "deleted":
@@ -800,8 +800,8 @@ cRecording::cRecording(const char *FileName)
   FileName = fileName = strdup(FileName);
   if (*(fileName + strlen(fileName) - 1) == '/')
      *(fileName + strlen(fileName) - 1) = 0;
-  if (strstr(FileName, VideoDirectory) == FileName)
+  if (strstr(FileName, cVideoDirectory::Name()) == FileName)
-     FileName += strlen(VideoDirectory) + 1;
+     FileName += strlen(cVideoDirectory::Name()) + 1;
   const char *p = strrchr(FileName, '/');
 
   name = NULL;
@@ -949,7 +949,7 @@ char *cRecording::SortName(void) const
 {
   char **sb = (RecordingsSortMode == rsmName) ? &sortBufferName : &sortBufferTime;
   if (!*sb) {
-     char *s = strdup(FileName() + strlen(VideoDirectory));
+     char *s = strdup(FileName() + strlen(cVideoDirectory::Name()));
      if (RecordingsSortMode != rsmName || Setup.AlwaysSortFoldersFirst)
         s = StripEpisodeName(s, RecordingsSortMode != rsmName);
      strreplace(s, '/', '0'); // some locales ignore '/' when sorting
@@ -990,11 +990,11 @@ const char *cRecording::FileName(void) const
      const char *fmt = isPesRecording ? NAMEFORMATPES : NAMEFORMATTS;
      int ch = isPesRecording ? priority : channel;
      int ri = isPesRecording ? lifetime : instanceId;
-     char *Name = LimitNameLengths(strdup(name), DirectoryPathMax - strlen(VideoDirectory) - 1 - 42, DirectoryNameMax); // 42 = length of an actual recording directory name (generated with DATAFORMATTS) plus some reserve
+     char *Name = LimitNameLengths(strdup(name), DirectoryPathMax - strlen(cVideoDirectory::Name()) - 1 - 42, DirectoryNameMax); // 42 = length of an actual recording directory name (generated with DATAFORMATTS) plus some reserve
      if (strcmp(Name, name) != 0)
         dsyslog("recording file name '%s' truncated to '%s'", name, Name);
      Name = ExchangeChars(Name, true);
-     fileName = strdup(cString::sprintf(fmt, VideoDirectory, Name, t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, ch, ri));
+     fileName = strdup(cString::sprintf(fmt, cVideoDirectory::Name(), Name, t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, ch, ri));
      free(Name);
      }
   return fileName;
@@ -1063,7 +1063,7 @@ const char *cRecording::Title(char Delimiter, bool NewIndicator, int Level) cons
 
 const char *cRecording::PrefixFileName(char Prefix)
 {
-  cString p = PrefixVideoFileName(FileName(), Prefix);
+  cString p = cVideoDirectory::PrefixVideoFileName(FileName(), Prefix);
   if (*p) {
      free(fileName);
      fileName = strdup(p);
@@ -1093,7 +1093,7 @@ bool cRecording::IsEdited(void) const
 bool cRecording::IsOnVideoDirectoryFileSystem(void) const
 {
   if (isOnVideoDirectoryFileSystem < 0)
-     isOnVideoDirectoryFileSystem = ::IsOnVideoDirectoryFileSystem(FileName());
+     isOnVideoDirectoryFileSystem = cVideoDirectory::IsOnVideoDirectoryFileSystem(FileName());
   return isOnVideoDirectoryFileSystem;
 }
 
@@ -1135,11 +1135,11 @@ bool cRecording::Delete(void)
      if (access(NewName, F_OK) == 0) {
         // the new name already exists, so let's remove that one first:
         isyslog("removing recording '%s'", NewName);
-        RemoveVideoFile(NewName);
+        cVideoDirectory::RemoveVideoFile(NewName);
         }
      isyslog("deleting recording '%s'", FileName());
      if (access(FileName(), F_OK) == 0) {
-        result = RenameVideoFile(FileName(), NewName);
+        result = cVideoDirectory::RenameVideoFile(FileName(), NewName);
         cRecordingUserCommand::InvokeCommand(RUC_DELETERECORDING, NewName);
         }
      else {
@@ -1159,7 +1159,7 @@ bool cRecording::Remove(void)
      return false;
      }
   isyslog("removing recording %s", FileName());
-  return RemoveVideoFile(FileName());
+  return cVideoDirectory::RemoveVideoFile(FileName());
 }
 
 bool cRecording::Undelete(void)
@@ -1177,7 +1177,7 @@ bool cRecording::Undelete(void)
      else {
         isyslog("undeleting recording '%s'", FileName());
         if (access(FileName(), F_OK) == 0)
-           result = RenameVideoFile(FileName(), NewName);
+           result = cVideoDirectory::RenameVideoFile(FileName(), NewName);
         else {
            isyslog("deleted recording '%s' vanished", FileName());
            result = false;
@@ -1250,7 +1250,7 @@ void cRecordings::Action(void)
 const char *cRecordings::UpdateFileName(void)
 {
   if (!updateFileName)
-     updateFileName = strdup(AddDirectory(VideoDirectory, ".update"));
+     updateFileName = strdup(AddDirectory(cVideoDirectory::Name(), ".update"));
   return updateFileName;
 }
 
@@ -1261,7 +1261,7 @@ void cRecordings::Refresh(bool Foreground)
   Clear();
   ChangeState();
   Unlock();
-  ScanVideoDir(VideoDirectory, Foreground);
+  ScanVideoDir(cVideoDirectory::Name(), Foreground);
 }
 
 void cRecordings::ScanVideoDir(const char *DirName, bool Foreground, int LinkLevel)
@@ -2274,7 +2274,7 @@ cUnbufferedFile *cFileName::Open(void)
      int BlockingFlag = blocking ? 0 : O_NONBLOCK;
      if (record) {
         dsyslog("recording to '%s'", fileName);
-        file = OpenVideoFile(fileName, O_RDWR | O_CREAT | O_LARGEFILE | BlockingFlag);
+        file = cVideoDirectory::OpenVideoFile(fileName, O_RDWR | O_CREAT | O_LARGEFILE | BlockingFlag);
         if (!file)
            LOG_ERROR_STR(fileName);
         }
@@ -2295,8 +2295,9 @@ cUnbufferedFile *cFileName::Open(void)
 void cFileName::Close(void)
 {
   if (file) {
-     if (CloseVideoFile(file) < 0)
+     if (file->Close() < 0)
         LOG_ERROR_STR(fileName);
+     delete file;
      file = NULL;
      }
 }

svdrp.c

@@ -10,7 +10,7 @@
  * and interact with the Video Disk Recorder - or write a full featured
  * graphical interface that sits on top of an SVDRP connection.
  *
- * $Id: svdrp.c 2.24 2013/02/17 13:18:01 kls Exp $
+ * $Id: svdrp.c 3.1 2013/09/10 13:21:38 kls Exp $
  */
 
 #include "svdrp.h"
@@ -1550,7 +1550,7 @@ void cSVDRP::CmdSTAT(const char *Option)
   if (*Option) {
      if (strcasecmp(Option, "DISK") == 0) {
         int FreeMB, UsedMB;
-        int Percent = VideoDiskSpace(&FreeMB, &UsedMB);
+        int Percent = cVideoDirectory::VideoDiskSpace(&FreeMB, &UsedMB);
         Reply(250, "%dMB %dMB %d%%", FreeMB + UsedMB, FreeMB, Percent);
         }
      else

vdr.c

@@ -22,7 +22,7 @@
  *
  * The project's page is at http://www.tvdr.de
  *
- * $Id: vdr.c 3.1 2013/06/10 14:28:43 kls Exp $
+ * $Id: vdr.c 3.2 2013/09/10 13:58:34 kls Exp $
  */
 
 #include <getopt.h>
@@ -663,7 +663,7 @@ int main(int argc, char *argv[])
 
   // Directories:
 
-  SetVideoDirectory(VideoDirectory);
+  cVideoDirectory::SetName(VideoDirectory);
   if (!ConfigDirectory)
      ConfigDirectory = DEFAULTCONFDIR;
   cPlugin::SetConfigDirectory(ConfigDirectory);
@@ -1406,6 +1406,7 @@ Exit:
      }
   cDevice::Shutdown();
   cPositioner::DestroyPositioner();
+  cVideoDirectory::Destroy();
   EpgHandlers.Clear();
   PluginManager.Shutdown(true);
   cSchedules::Cleanup(true);

videodir.c

@@ -1,10 +1,10 @@
 /*
- * videodir.c: Functions to maintain a distributed video directory
+ * videodir.c: Functions to maintain the video directory
  *
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: videodir.c 3.1 2013/08/23 12:28:06 kls Exp $
+ * $Id: videodir.c 3.2 2013/09/11 12:20:37 kls Exp $
  */
 
 #include "videodir.h"
@@ -19,213 +19,129 @@
 #include "recording.h"
 #include "tools.h"
 
-//#define DEPRECATED_DISTRIBUTED_VIDEODIR // Code enclosed with this macro is deprecated and will be removed in a future version
+#ifdef DEPRECATED_VIDEODIR
-
 const char *VideoDirectory = VIDEODIR;
-
-void SetVideoDirectory(const char *Directory)
-{
-  VideoDirectory = strdup(Directory);
-}
-
-class cVideoDirectory {
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
-private:
-  char *name, *stored, *adjusted;
-  int length, number, digits;
 #endif
-public:
+cString cVideoDirectory::name;
-  cVideoDirectory(void);
+cVideoDirectory *cVideoDirectory::current = NULL;
-  ~cVideoDirectory();
-  int FreeMB(int *UsedMB = NULL);
-  const char *Name(void) { return
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
-                                  name ? name :
-#endif
-                                                VideoDirectory; }
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
-  const char *Stored(void) { return stored; }
-  int Length(void) { return length; }
-  bool IsDistributed(void) { return name != NULL; }
-  bool Next(void);
-  void Store(void);
-  const char *Adjust(const char *FileName);
-#endif
-  };
 
 cVideoDirectory::cVideoDirectory(void)
 {
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
+  delete current;
-  length = strlen(VideoDirectory);
+  current = this;
-  name = (VideoDirectory[length - 1] == '0') ? strdup(VideoDirectory) : NULL;
-  stored = adjusted = NULL;
-  number = -1;
-  digits = 0;
-#endif
 }
 
 cVideoDirectory::~cVideoDirectory()
 {
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
+  current = NULL;
-  free(name);
+}
-  free(stored);
+
-  free(adjusted);
+cVideoDirectory *cVideoDirectory::Current(void)
-#endif
+{
+  if (!current)
+     current = new cVideoDirectory;
+  return current;
+}
+
+void cVideoDirectory::Destroy(void)
+{
+  delete current;
 }
 
 int cVideoDirectory::FreeMB(int *UsedMB)
 {
-  return FreeDiskSpaceMB(
+  return FreeDiskSpaceMB(Name(), UsedMB);
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
+}
-                         name ? name :
+
+const char *cVideoDirectory::Name(void)
+{
+  return name;
+}
+
+void cVideoDirectory::SetName(const char *Name)
+{
+  name = Name;
+#ifdef DEPRECATED_VIDEODIR
+  VideoDirectory = Name;
 #endif
-                                       VideoDirectory, UsedMB);
 }
 
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
+bool cVideoDirectory::Register(const char *FileName)
-bool cVideoDirectory::Next(void)
 {
-  if (name) {
-     if (number < 0) {
-        int l = length;
-        while (l-- > 0 && isdigit(name[l]))
-              ;
-        l++;
-        digits = length - l;
-        int n = atoi(&name[l]);
-        if (n == 0)
-           number = n;
-        else
-           return false; // base video directory must end with zero
-        }
-     if (++number > 0) {
-        char buf[16];
-        if (sprintf(buf, "%0*d", digits, number) == digits) {
-           strcpy(&name[length - digits], buf);
-           return DirectoryOk(name);
-           }
-        }
-     }
-  return false;
-}
-
-void cVideoDirectory::Store(void)
-{
-  if (name) {
-     free(stored);
-     stored = strdup(name);
-     }
-}
-
-const char *cVideoDirectory::Adjust(const char *FileName)
-{
-  if (stored) {
-     free(adjusted);
-     adjusted = strdup(FileName);
-     return strncpy(adjusted, stored, length);
-     }
-  return NULL;
-}
-#endif
-
-cUnbufferedFile *OpenVideoFile(const char *FileName, int Flags)
-{
-  const char *ActualFileName = FileName;
-
   // Incoming name must be in base video directory:
-  if (strstr(FileName, VideoDirectory) != FileName) {
+  if (strstr(FileName, Name()) != FileName) {
-     esyslog("ERROR: %s not in %s", FileName, VideoDirectory);
+     esyslog("ERROR: %s not in %s", FileName, Name());
      errno = ENOENT; // must set 'errno' - any ideas for a better value?
-     return NULL;
+     return false;
      }
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
+  return true;
-  // Are we going to create a new file?
-  if ((Flags & O_CREAT) != 0) {
-     cVideoDirectory Dir;
-     if (Dir.IsDistributed()) {
-        // Find the directory with the most free space:
-        int MaxFree = Dir.FreeMB();
-        while (Dir.Next()) {
-              int Free = FreeDiskSpaceMB(Dir.Name());
-              if (Free > MaxFree) {
-                 Dir.Store();
-                 MaxFree = Free;
-                 }
-              }
-        if (Dir.Stored()) {
-           ActualFileName = Dir.Adjust(FileName);
-           if (!MakeDirs(ActualFileName, false))
-              return NULL; // errno has been set by MakeDirs()
-           if (symlink(ActualFileName, FileName) < 0) {
-              LOG_ERROR_STR(FileName);
-              return NULL;
-              }
-           ActualFileName = strdup(ActualFileName); // must survive Dir!
-           }
-        }
-     }
-#endif
-  cUnbufferedFile *File = cUnbufferedFile::Create(ActualFileName, Flags, DEFFILEMODE);
-  if (ActualFileName != FileName)
-     free((char *)ActualFileName);
-  return File;
 }
 
-int CloseVideoFile(cUnbufferedFile *File)
+bool cVideoDirectory::Rename(const char *OldName, const char *NewName)
 {
-  int Result = File->Close();
-  delete File;
-  return Result;
-}
-
-bool RenameVideoFile(const char *OldName, const char *NewName)
-{
-  // Only the base video directory entry will be renamed, leaving the
-  // possible symlinks untouched. Going through all the symlinks and disks
-  // would be unnecessary work - maybe later...
   if (rename(OldName, NewName) == -1) {
-     LOG_ERROR_STR(OldName);
+     LOG_ERROR_STR(NewName);
      return false;
      }
   return true;
 }
 
-bool RemoveVideoFile(const char *FileName)
+bool cVideoDirectory::Move(const char *FromName, const char *ToName)
 {
-  return RemoveFileOrDir(FileName, true);
+  if (rename(FromName, ToName) == -1) {
-}
+     LOG_ERROR_STR(ToName);
-
-bool VideoFileSpaceAvailable(int SizeMB)
-{
-  cVideoDirectory Dir;
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
-  if (Dir.IsDistributed()) {
-     if (Dir.FreeMB() >= SizeMB * 2) // base directory needs additional space
-        return true;
-     while (Dir.Next()) {
-           if (Dir.FreeMB() >= SizeMB)
-              return true;
-           }
      return false;
      }
-#endif
+  return true;
-  return Dir.FreeMB() >= SizeMB;
 }
 
-int VideoDiskSpace(int *FreeMB, int *UsedMB)
+bool cVideoDirectory::Remove(const char *Name)
 {
-  int free = 0, used = 0;
+  return RemoveFileOrDir(Name);
+}
+
+void cVideoDirectory::Cleanup(const char *IgnoreFiles[])
+{
+  RemoveEmptyDirectories(Name(), false, IgnoreFiles);
+}
+
+bool cVideoDirectory::Contains(const char *Name)
+{
+  return EntriesOnSameFileSystem(this->Name(), Name);
+}
+
+cUnbufferedFile *cVideoDirectory::OpenVideoFile(const char *FileName, int Flags)
+{
+  if (Current()->Register(FileName))
+     return cUnbufferedFile::Create(FileName, Flags, DEFFILEMODE);
+  return NULL;
+}
+
+bool cVideoDirectory::RenameVideoFile(const char *OldName, const char *NewName)
+{
+  return Current()->Rename(OldName, NewName);
+}
+
+bool cVideoDirectory::MoveVideoFile(const char *FromName, const char *ToName)
+{
+  return Current()->Move(FromName, ToName);
+}
+
+bool cVideoDirectory::RemoveVideoFile(const char *FileName)
+{
+  return Current()->Remove(FileName);
+}
+
+bool cVideoDirectory::VideoFileSpaceAvailable(int SizeMB)
+{
+  return Current()->FreeMB() >= SizeMB;
+}
+
+int cVideoDirectory::VideoDiskSpace(int *FreeMB, int *UsedMB)
+{
+  int used = 0;
+  int free = Current()->FreeMB(&used);
   int deleted = DeletedRecordings.TotalFileSizeMB();
-  cVideoDirectory Dir;
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
-  do {
-#endif
-     int u;
-     free += Dir.FreeMB(&u);
-     used += u;
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
-     } while (Dir.Next());
-#endif
   if (deleted > used)
      deleted = used; // let's not get beyond 100%
   free += deleted;
@@ -237,7 +153,7 @@ int VideoDiskSpace(int *FreeMB, int *UsedMB)
   return (free + used) ? used * 100 / (free + used) : 0;
 }
 
-cString PrefixVideoFileName(const char *FileName, char Prefix)
+cString cVideoDirectory::PrefixVideoFileName(const char *FileName, char Prefix)
 {
   char PrefixedName[strlen(FileName) + 2];
 
@@ -257,30 +173,14 @@ cString PrefixVideoFileName(const char *FileName, char Prefix)
   return NULL;
 }
 
-void RemoveEmptyVideoDirectories(const char *IgnoreFiles[])
+void cVideoDirectory::RemoveEmptyVideoDirectories(const char *IgnoreFiles[])
 {
-  cVideoDirectory Dir;
+  Current()->Cleanup(IgnoreFiles);
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
-  do {
-#endif
-     RemoveEmptyDirectories(Dir.Name(), false, IgnoreFiles);
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
-     } while (Dir.Next());
-#endif
 }
 
-bool IsOnVideoDirectoryFileSystem(const char *FileName)
+bool cVideoDirectory::IsOnVideoDirectoryFileSystem(const char *FileName)
 {
-  cVideoDirectory Dir;
+  return Current()->Contains(FileName);
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
-  do {
-#endif
-     if (EntriesOnSameFileSystem(Dir.Name(), FileName))
-        return true;
-#ifdef DEPRECATED_DISTRIBUTED_VIDEODIR
-     } while (Dir.Next());
-#endif
-  return false;
 }
 
 // --- cVideoDiskUsage -------------------------------------------------------
@@ -298,7 +198,7 @@ bool cVideoDiskUsage::HasChanged(int &State)
 {
   if (time(NULL) - lastChecked > DISKSPACECHEK) {
      int FreeMB;
-     int UsedPercent = VideoDiskSpace(&FreeMB);
+     int UsedPercent = cVideoDirectory::VideoDiskSpace(&FreeMB);
      if (FreeMB != freeMB) {
         usedPercent = UsedPercent;
         freeMB = FreeMB;

videodir.h

@@ -1,10 +1,10 @@
 /*
- * videodir.h: Functions to maintain a distributed video directory
+ * videodir.h: Functions to maintain the video directory
  *
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: videodir.h 2.3 2012/09/30 11:01:15 kls Exp $
+ * $Id: videodir.h 3.1 2013/09/11 12:19:47 kls Exp $
  */
 
 #ifndef __VIDEODIR_H
@@ -13,18 +13,80 @@
 #include <stdlib.h>
 #include "tools.h"
 
+#define DEPRECATED_VIDEODIR
+#ifdef DEPRECATED_VIDEODIR
 extern const char *VideoDirectory;
+#endif
 
-void SetVideoDirectory(const char *Directory);
+class cVideoDirectory {
-cUnbufferedFile *OpenVideoFile(const char *FileName, int Flags);
+private:
-int CloseVideoFile(cUnbufferedFile *File);
+  static cString name;
-bool RenameVideoFile(const char *OldName, const char *NewName);
+  static cVideoDirectory *current;
-bool RemoveVideoFile(const char *FileName);
+  static cVideoDirectory *Current(void);
-bool VideoFileSpaceAvailable(int SizeMB);
+public:
-int VideoDiskSpace(int *FreeMB = NULL, int *UsedMB = NULL); // returns the used disk space in percent
+  cVideoDirectory(void);
-cString PrefixVideoFileName(const char *FileName, char Prefix);
+  virtual ~cVideoDirectory();
-void RemoveEmptyVideoDirectories(const char *IgnoreFiles[] = NULL);
+  virtual int FreeMB(int *UsedMB = NULL);
-bool IsOnVideoDirectoryFileSystem(const char *FileName);
+      ///< Returns the total amount (in MB) of free disk space for recording.
+      ///< If UsedMB is given, it returns the amount of disk space in use by
+      ///< existing recordings (or anything else) on that disk.
+  virtual bool Register(const char *FileName);
+      ///< By default VDR assumes that the video directory consists of one large
+      ///< volume, on which it can store its recordings. A derived cVideoDirectory
+      ///< may, for instance, use several separate disks to store recordings.
+      ///< The given FileName is the full path name (including the video directory) of
+      ///< a recording file ('*.ts') that is about to be opened for writing. If the actual
+      ///< file shall be put on an other disk, the derived cVideoDirectory should
+      ///< create a symbolic link from the given FileName to the other location.
+      ///< Returns true if the operation was successful.
+      ///< The default implementation just checks whether the incoming file name really
+      ///< is under the video directory.
+  virtual bool Rename(const char *OldName, const char *NewName);
+      ///< Renames the directory OldName to NewName.
+      ///< OldName and NewName are full path names that begin with the name of the
+      ///< video directory and end with '*.rec' or '*.del'. Only the base name (the
+      ///< rightmost component) of the two names may be different.
+      ///< Returns true if the operation was successful.
+      ///< The default implementation just calls the system's rename() function.
+  virtual bool Move(const char *FromName, const char *ToName);
+      ///< Moves the directory FromName to the location ToName. FromName is the full
+      ///< path name of a recording's '*.rec' directory. ToName has the same '*.rec'
+      ///< part as FromName, but a different directory path above it.
+      ///< Returns true if the operation was successful.
+      ///< The default implementation just calls the system's rename() function.
+  virtual bool Remove(const char *Name);
+      ///< Removes the directory with the given Name and everything it contains.
+      ///< Name is a full path name that begins with the name of the video directory.
+      ///< Returns true if the operation was successful.
+      ///< The default implementation calls RemoveFileOrDir().
+  virtual void Cleanup(const char *IgnoreFiles[] = NULL);
+      ///< Recursively removes all empty directories under the video directory.
+      ///< If IgnoreFiles is given, the file names in this (NULL terminated) array
+      ///< are ignored when checking whether a directory is empty. These are
+      ///< typically "dot files", like e.g. ".sort".
+      ///< The default implementation calls RemoveEmptyDirectories().
+  virtual bool Contains(const char *Name);
+      ///< Checks whether the directory Name is on the same file system as the
+      ///< video directory. Name is the full path name of a recording's '*.rec'
+      ///< directory. This function is usually called when an ongoing recording
+      ///< is about to run out of disk space, and an existing (old) recording needs
+      ///< to be deleted. It shall make sure that deleting this old recording will
+      ///< actually free up space in the video directory, and not on some other
+      ///< device that just happens to be mounted.
+      ///< The default implementation calls EntriesOnSameFileSystem().
+  static const char *Name(void);
+  static void SetName(const char *Name);
+  static void Destroy(void);
+  static cUnbufferedFile *OpenVideoFile(const char *FileName, int Flags);
+  static bool RenameVideoFile(const char *OldName, const char *NewName);
+  static bool MoveVideoFile(const char *FromName, const char *ToName);
+  static bool RemoveVideoFile(const char *FileName);
+  static bool VideoFileSpaceAvailable(int SizeMB);
+  static int VideoDiskSpace(int *FreeMB = NULL, int *UsedMB = NULL); // returns the used disk space in percent
+  static cString PrefixVideoFileName(const char *FileName, char Prefix);
+  static void RemoveEmptyVideoDirectories(const char *IgnoreFiles[] = NULL);
+  static bool IsOnVideoDirectoryFileSystem(const char *FileName);
+  };
 
 class cVideoDiskUsage {
 private: