diff options
Diffstat (limited to 'filter.h')
| -rw-r--r-- | filter.h | 37 |
1 files changed, 34 insertions, 3 deletions
@@ -4,7 +4,7 @@ * See the main source file 'vdr.c' for copyright information and * how to reach the author. * - * $Id: filter.h 4.3 2017/05/09 08:37:23 kls Exp $ + * $Id: filter.h 5.1 2021/03/16 15:10:54 kls Exp $ */ #ifndef __FILTER_H @@ -13,21 +13,52 @@ #include <sys/types.h> #include "tools.h" +#define DEPRECATED_SECTIONSYNCER_SYNC_REPEAT 1 + class cSectionSyncer { private: int currentVersion; int currentSection; + bool random; bool synced; bool complete; + uint32_t segments; // bit flags for the 32 segments uchar sections[32]; // holds 32 * 8 = 256 bits, as flags for the sections void SetSectionFlag(uchar Section, bool On) { if (On) sections[Section / 8] |= (1 << (Section % 8)); else sections[Section / 8] &= ~(1 << (Section % 8)); } bool GetSectionFlag(uchar Section) { return sections[Section / 8] & (1 << (Section % 8)); } public: - cSectionSyncer(void); + cSectionSyncer(bool Random = false); + ///< Sets up a new section syncer. + ///< Call Check() to see whether a given section needs processing. Once the section + ///< has been processed, call Processed() to mark it as such. If, for any reason, + ///< processing is not completed after calling Check(), nothing special needs to be + ///< done. Just don't call Processed() and a later call to Check() with the same + ///< SectionNumber will return true again. + ///< If Random is true, sections can be processed in random order, not necessarily + ///< starting with section 0. void Reset(void); - void Repeat(void); + bool Check(uchar Version, int SectionNumber); + ///< Returns true if Version is not the current version, or the given SectionNumber has not + ///< been marked as processed, yet. Sections are handled in ascending order, starting at 0, + ///< unless Random is true in the constructor call. + bool Processed(int SectionNumber, int LastSectionNumber, int SegmentLastSectionNumber = -1); + ///< Marks the given SectionNumber as processed. + ///< LastSectionNumber is used to determine whether all sections have been processed. + ///< SegmentLastSectionNumber can be given to handle partially filled segments (like, + ///< for instance in the EIT). + ///< Returns true if all sections have been processed. bool Complete(void) { return complete; } + ///< Returns true if all sections have been processed. +#if DEPRECATED_SECTIONSYNCER_SYNC_REPEAT + void Repeat(void); bool Sync(uchar Version, int Number, int LastNumber); +#endif + }; + +class cSectionSyncerRandom : public cSectionSyncer { + ///< Helper class for having an array of random section syncers. +public: + cSectionSyncerRandom(void): cSectionSyncer(true) {} }; class cFilterData : public cListObject { |