vdr/tools.h
Klaus Schmidinger dab203efe9 Version 1.3.30
- Improved responsiveness inside CAM menus.
- Added handling of the 'Close MMI' tag to avoid error log messages with CAMs
  that actually use it.
- Now waiting at startup until all DVB devices are ready. This includes having
  all CAMs initialized and ready to decrypt, so that no more "channel not
  available" happens if VDR is started with the current channel being an encrypted
  one, or a timer on such a channel hits right after starting VDR.
- Fixed cVideoRepacker to better handle errors in data (thanks to Reinhard Nissl).
- Fixed cDvbTuner to avoid lockups on NPTL systems (thanks to Marcel Wiesweg).
- Added 'Service' functions to the plugin interface (thanks to Udo Richter).
  See PLUGINS.html, section "Custom services" for details.
- Replaced the get/put_unaligned() macros from <asm/unaligned.h> with own inline
  functions to avoid problems on platforms that don't provide these (thanks to
  David Woodhouse for his help).
2005-08-21 18:00:00 +02:00

287 lines
8.4 KiB
C++

/*
* tools.h: Various tools
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: tools.h 1.74 2005/08/21 14:06:38 kls Exp $
*/
#ifndef __TOOLS_H
#define __TOOLS_H
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <sys/stat.h>
#include <sys/types.h>
typedef unsigned char uchar;
typedef unsigned long long int uint64;
extern int SysLogLevel;
#define esyslog(a...) void( (SysLogLevel > 0) ? syslog(LOG_ERR, a) : void() )
#define isyslog(a...) void( (SysLogLevel > 1) ? syslog(LOG_INFO, a) : void() )
#define dsyslog(a...) void( (SysLogLevel > 2) ? syslog(LOG_DEBUG, a) : void() )
#define LOG_ERROR esyslog("ERROR (%s,%d): %m", __FILE__, __LINE__)
#define LOG_ERROR_STR(s) esyslog("ERROR: %s: %m", s)
#define SECSINDAY 86400
#define KILOBYTE(n) ((n) * 1024)
#define MEGABYTE(n) ((n) * 1024 * 1024)
#define MAXPARSEBUFFER KILOBYTE(10)
#define MALLOC(type, size) (type *)malloc(sizeof(type) * (size))
#define DELETENULL(p) (delete (p), p = NULL)
#define CHECK(s) { if ((s) < 0) LOG_ERROR; } // used for 'ioctl()' calls
#define FATALERRNO (errno != EAGAIN && errno != EINTR)
#ifndef __STL_CONFIG_H // in case some plugin needs to use the STL
template<class T> inline T min(T a, T b) { return a <= b ? a : b; }
template<class T> inline T max(T a, T b) { return a >= b ? a : b; }
template<class T> inline int sgn(T a) { return a < 0 ? -1 : a > 0 ? 1 : 0; }
template<class T> inline void swap(T &a, T &b) { T t = a; a = b; b = t; }
#endif
#define BCDCHARTOINT(x) (10 * ((x & 0xF0) >> 4) + (x & 0xF))
int BCD2INT(int x);
// Unfortunately there are no platform independent macros for unaligned
// access. so we do it this way:
template<class T> inline T get_unaligned(T *p)
{
struct s { T v; } __attribute__((packed));
return ((s *)p)->v;
}
template<class T> inline void put_unaligned(unsigned int v, T* p)
{
struct s { T v; } __attribute__((packed));
((s *)p)->v = v;
}
class cString {
private:
char *s;
public:
cString(const char *S = NULL, bool TakePointer = false);
virtual ~cString();
operator const char * () const { return s; } // for use in (const char *) context
const char * operator*() const { return s; } // for use in (const void *) context (printf() etc.)
cString &operator=(const cString &String);
};
ssize_t safe_read(int filedes, void *buffer, size_t size);
ssize_t safe_write(int filedes, const void *buffer, size_t size);
void writechar(int filedes, char c);
int WriteAllOrNothing(int fd, const uchar *Data, int Length, int TimeoutMs = 0, int RetryMs = 0);
///< Writes either all Data to the given file descriptor, or nothing at all.
///< If TimeoutMs is greater than 0, it will only retry for that long, otherwise
///< it will retry forever. RetryMs defines the time between two retries.
char *strcpyrealloc(char *dest, const char *src);
char *strn0cpy(char *dest, const char *src, size_t n);
char *strreplace(char *s, char c1, char c2);
char *strreplace(char *s, const char *s1, const char *s2); ///< re-allocates 's' and deletes the original string if necessary!
char *skipspace(const char *s);
char *stripspace(char *s);
char *compactspace(char *s);
cString strescape(const char *s, const char *chars);
bool startswith(const char *s, const char *p);
bool endswith(const char *s, const char *p);
bool isempty(const char *s);
int numdigits(int n);
bool isnumber(const char *s);
cString itoa(int n);
cString AddDirectory(const char *DirName, const char *FileName);
int FreeDiskSpaceMB(const char *Directory, int *UsedMB = NULL);
bool DirectoryOk(const char *DirName, bool LogErrors = false);
bool MakeDirs(const char *FileName, bool IsDirectory = false);
bool RemoveFileOrDir(const char *FileName, bool FollowSymlinks = false);
bool RemoveEmptyDirectories(const char *DirName, bool RemoveThis = false);
char *ReadLink(const char *FileName); ///< returns a new strings allocated on the heap, which the caller must delete (or NULL in case of an error)
bool SpinUpDisk(const char *FileName);
time_t LastModifiedTime(const char *FileName);
cString WeekDayName(int WeekDay);
cString WeekDayName(time_t t);
cString DayDateTime(time_t t = 0);
cString TimeToString(time_t t);
cString DateString(time_t t);
cString TimeString(time_t t);
class cTimeMs {
private:
uint64 begin;
public:
cTimeMs(void);
static uint64 Now(void);
void Set(int Ms = 0);
bool TimedOut(void);
uint64 Elapsed(void);
};
class cReadLine {
private:
char buffer[MAXPARSEBUFFER];
public:
char *Read(FILE *f);
};
class cPoller {
private:
enum { MaxPollFiles = 16 };
pollfd pfd[MaxPollFiles];
int numFileHandles;
public:
cPoller(int FileHandle = -1, bool Out = false);
bool Add(int FileHandle, bool Out);
bool Poll(int TimeoutMs = 0);
};
class cReadDir {
private:
DIR *directory;
struct dirent *result;
union { // according to "The GNU C Library Reference Manual"
struct dirent d;
char b[offsetof(struct dirent, d_name) + NAME_MAX + 1];
} u;
public:
cReadDir(const char *Directory);
~cReadDir();
bool Ok(void) { return directory != NULL; }
struct dirent *Next(void);
};
class cFile {
private:
static bool files[];
static int maxFiles;
int f;
public:
cFile(void);
~cFile();
operator int () { return f; }
bool Open(const char *FileName, int Flags, mode_t Mode = DEFFILEMODE);
bool Open(int FileDes);
void Close(void);
bool IsOpen(void) { return f >= 0; }
bool Ready(bool Wait = true);
static bool AnyFileReady(int FileDes = -1, int TimeoutMs = 1000);
static bool FileReady(int FileDes, int TimeoutMs = 1000);
static bool FileReadyForWriting(int FileDes, int TimeoutMs = 1000);
};
class cSafeFile {
private:
FILE *f;
char *fileName;
char *tempName;
public:
cSafeFile(const char *FileName);
~cSafeFile();
operator FILE* () { return f; }
bool Open(void);
bool Close(void);
};
class cLockFile {
private:
char *fileName;
int f;
public:
cLockFile(const char *Directory);
~cLockFile();
bool Lock(int WaitSeconds = 0);
void Unlock(void);
};
class cListObject {
private:
cListObject *prev, *next;
public:
cListObject(void);
virtual ~cListObject();
virtual int Compare(const cListObject &ListObject) const { return 0; }
///< Must return 0 if this object is equal to ListObject, a positive value
///< if it is "greater", and a negative value if it is "smaller".
void Append(cListObject *Object);
void Insert(cListObject *Object);
void Unlink(void);
int Index(void) const;
cListObject *Prev(void) const { return prev; }
cListObject *Next(void) const { return next; }
};
class cListBase {
protected:
cListObject *objects, *lastObject;
cListBase(void);
int count;
public:
virtual ~cListBase();
void Add(cListObject *Object, cListObject *After = NULL);
void Ins(cListObject *Object, cListObject *Before = NULL);
void Del(cListObject *Object, bool DeleteObject = true);
virtual void Move(int From, int To);
void Move(cListObject *From, cListObject *To);
virtual void Clear(void);
cListObject *Get(int Index) const;
int Count(void) const { return count; }
void Sort(void);
};
template<class T> class cList : public cListBase {
public:
T *Get(int Index) const { return (T *)cListBase::Get(Index); }
T *First(void) const { return (T *)objects; }
T *Last(void) const { return (T *)lastObject; }
T *Prev(const T *object) const { return (T *)object->cListObject::Prev(); } // need to call cListObject's members to
T *Next(const T *object) const { return (T *)object->cListObject::Next(); } // avoid ambiguities in case of a "list of lists"
};
class cHashObject : public cListObject {
friend class cHashBase;
private:
unsigned int id;
cListObject *object;
public:
cHashObject(cListObject *Object, unsigned int Id) { object = Object; id = Id; }
};
class cHashBase {
private:
cList<cHashObject> **hashTable;
int size;
unsigned int hashfn(unsigned int Id) const { return Id % size; }
protected:
cHashBase(int Size);
public:
virtual ~cHashBase();
void Add(cListObject *Object, unsigned int Id);
void Del(cListObject *Object, unsigned int Id);
cListObject *Get(unsigned int Id) const;
cList<cHashObject> *GetList(unsigned int Id) const;
};
#define HASHSIZE 512
template<class T> class cHash : public cHashBase {
public:
cHash(int Size = HASHSIZE) : cHashBase(Size) {}
T *Get(unsigned int Id) const { return (T *)cHashBase::Get(Id); }
};
#endif //__TOOLS_H