MediaLookupTable Class Reference

Collaboration diagram for MediaLookupTable:

[legend]

Public Member Functions
Medium *	lookup (char const *name) const
void	addNew (Medium *medium, char *mediumName)
void	remove (char const *name)
void	generateNewName (char *mediumName, unsigned maxLen)
Static Public Member Functions
static MediaLookupTable *	ourMedia (UsageEnvironment &env)
Protected Member Functions
	MediaLookupTable (UsageEnvironment &env)
virtual	~MediaLookupTable ()
Private Attributes
UsageEnvironment &	fEnv
HashTable *	fTable
unsigned	fNameGenerator

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Detailed Description

Definition at line 25 of file Media.cpp.

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Constructor & Destructor Documentation

MediaLookupTable::MediaLookupTable

(

UsageEnvironment &

env

)

[protected]

Definition at line 185 of file Media.cpp.

Referenced by ourMedia().

  : fEnv(env), fTable(HashTable::create(STRING_HASH_KEYS)), fNameGenerator(0) {
}

MediaLookupTable::~MediaLookupTable

(

)

[protected, virtual]

Definition at line 189 of file Media.cpp.

References fTable.

                                    {
  delete fTable;
}

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Member Function Documentation

MediaLookupTable * MediaLookupTable::ourMedia

(

UsageEnvironment &

env

)

[static]

Definition at line 145 of file Media.cpp.

References env, _Tables::getOurTables(), MediaLookupTable(), _Tables::mediaTable, and NULL.

Referenced by Medium::close(), Medium::lookupByName(), and Medium::Medium().

                                                                  {
  _Tables* ourTables = _Tables::getOurTables(env);
  if (ourTables->mediaTable == NULL) {
    // Create a new table to record the media that are to be created in
    // this environment:
    ourTables->mediaTable = new MediaLookupTable(env);
  }
  return (MediaLookupTable*)(ourTables->mediaTable);
}

Medium * MediaLookupTable::lookup

(

char const *

name

)

const

Definition at line 155 of file Media.cpp.

References fTable, and HashTable::Lookup().

Referenced by Medium::lookupByName(), and remove().

                                                       {
  return (Medium*)(fTable->Lookup(name));
}

void MediaLookupTable::addNew	(	Medium *	medium,
		char *	mediumName
	)

Definition at line 159 of file Media.cpp.

References HashTable::Add(), and fTable.

Referenced by Medium::Medium().

                                                              {
  fTable->Add(mediumName, (void*)medium);
}

void MediaLookupTable::remove

(

char const *

name

)

Definition at line 163 of file Media.cpp.

References fEnv, fTable, _Tables::getOurTables(), HashTable::IsEmpty(), lookup(), _Tables::mediaTable, NULL, and HashTable::Remove().

Referenced by Medium::close().

                                              {
  Medium* medium = lookup(name);
  if (medium != NULL) {
    fTable->Remove(name);
    if (fTable->IsEmpty()) {
      // We can also delete ourselves (to reclaim space):
      _Tables* ourTables = _Tables::getOurTables(fEnv);
      delete this;
      ourTables->mediaTable = NULL;
      ourTables->reclaimIfPossible();
    }

    delete medium;
  }
}

void MediaLookupTable::generateNewName	(	char *	mediumName,
		unsigned	maxLen
	)

Definition at line 179 of file Media.cpp.

References fNameGenerator.

Referenced by Medium::Medium().

                                                            {
  // We should really use snprintf() here, but not all systems have it
  sprintf(mediumName, "liveMedia%d", fNameGenerator++);
}

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Field Documentation

UsageEnvironment& MediaLookupTable::fEnv [private]

Definition at line 42 of file Media.cpp.

Referenced by remove().

HashTable* MediaLookupTable::fTable [private]

Definition at line 43 of file Media.cpp.

Referenced by addNew(), lookup(), remove(), and ~MediaLookupTable().

unsigned MediaLookupTable::fNameGenerator [private]

Definition at line 44 of file Media.cpp.

Referenced by generateNewName().

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The documentation for this class was generated from the following file:

• liveMedia/Media.cpp

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