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/*
* 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 4.1 2015/08/11 13:39:59 kls Exp $
*/
#include "videodir.h"
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include "recording.h"
#include "tools.h"
cMutex cVideoDirectory::mutex;
cString cVideoDirectory::name;
cVideoDirectory *cVideoDirectory::current = NULL;
cVideoDirectory::cVideoDirectory(void)
{
mutex.Lock();
delete current;
current = this;
mutex.Unlock();
}
cVideoDirectory::~cVideoDirectory()
{
mutex.Lock();
current = NULL;
mutex.Unlock();
}
cVideoDirectory *cVideoDirectory::Current(void)
{
mutex.Lock();
if (!current)
new cVideoDirectory;
mutex.Unlock();
return current;
}
void cVideoDirectory::Destroy(void)
{
delete current;
}
int cVideoDirectory::FreeMB(int *UsedMB)
{
return FreeDiskSpaceMB(Name(), UsedMB);
}
const char *cVideoDirectory::Name(void)
{
return name;
}
void cVideoDirectory::SetName(const char *Name)
{
name = Name;
}
bool cVideoDirectory::Register(const char *FileName)
{
// Incoming name must be in base video directory:
if (strstr(FileName, Name()) != FileName) {
esyslog("ERROR: %s not in %s", FileName, Name());
errno = ENOENT; // must set 'errno' - any ideas for a better value?
return false;
}
return true;
}
bool cVideoDirectory::Rename(const char *OldName, const char *NewName)
{
dsyslog("renaming '%s' to '%s'", OldName, NewName);
if (rename(OldName, NewName) == -1) {
LOG_ERROR_STR(NewName);
return false;
}
return true;
}
bool cVideoDirectory::Move(const char *FromName, const char *ToName)
{
dsyslog("moving '%s' to '%s'", FromName, ToName);
if (EntriesOnSameFileSystem(FromName, ToName)) {
if (rename(FromName, ToName) == -1) {
LOG_ERROR_STR(ToName);
return false;
}
}
else
return RecordingsHandler.Add(ruMove, FromName, ToName);
return true;
}
bool cVideoDirectory::Remove(const char *Name)
{
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);
LOCK_DELETEDRECORDINGS_READ;
int deleted = DeletedRecordings->TotalFileSizeMB();
if (deleted > used)
deleted = used; // let's not get beyond 100%
free += deleted;
used -= deleted;
if (FreeMB)
*FreeMB = free;
if (UsedMB)
*UsedMB = used;
return (free + used) ? used * 100 / (free + used) : 0;
}
cString cVideoDirectory::PrefixVideoFileName(const char *FileName, char Prefix)
{
char PrefixedName[strlen(FileName) + 2];
const char *p = FileName + strlen(FileName); // p points at the terminating 0
int n = 2;
while (p-- > FileName && n > 0) {
if (*p == '/') {
if (--n == 0) {
int l = p - FileName + 1;
strncpy(PrefixedName, FileName, l);
PrefixedName[l] = Prefix;
strcpy(PrefixedName + l + 1, p + 1);
return PrefixedName;
}
}
}
return NULL;
}
void cVideoDirectory::RemoveEmptyVideoDirectories(const char *IgnoreFiles[])
{
Current()->Cleanup(IgnoreFiles);
}
bool cVideoDirectory::IsOnVideoDirectoryFileSystem(const char *FileName)
{
return Current()->Contains(FileName);
}
// --- cVideoDiskUsage -------------------------------------------------------
#define DISKSPACECHEK 5 // seconds between disk space checks
#define MB_PER_MINUTE 25.75 // this is just an estimate!
int cVideoDiskUsage::state = 0;
time_t cVideoDiskUsage::lastChecked = 0;
int cVideoDiskUsage::usedPercent = 0;
int cVideoDiskUsage::freeMB = 0;
int cVideoDiskUsage::freeMinutes = 0;
bool cVideoDiskUsage::HasChanged(int &State)
{
if (time(NULL) - lastChecked > DISKSPACECHEK) {
int FreeMB;
int UsedPercent = cVideoDirectory::VideoDiskSpace(&FreeMB);
if (FreeMB != freeMB) {
usedPercent = UsedPercent;
freeMB = FreeMB;
LOCK_RECORDINGS_READ;
double MBperMinute = Recordings->MBperMinute();
if (MBperMinute <= 0)
MBperMinute = MB_PER_MINUTE;
freeMinutes = int(double(FreeMB) / MBperMinute);
state++;
}
lastChecked = time(NULL);
}
if (State != state) {
State = state;
return true;
}
return false;
}
cString cVideoDiskUsage::String(void)
{
HasChanged(state);
return cString::sprintf("%s %d%% - %2d:%02d %s", tr("Disk"), usedPercent, freeMinutes / 60, freeMinutes % 60, tr("free"));
}
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