139 lines
3.8 KiB
C++
139 lines
3.8 KiB
C++
|
/**********
|
||
|
|
This library is free software; you can redistribute it and/or modify it under
|
||
|
|
the terms of the GNU Lesser General Public License as published by the
|
||
|
|
Free Software Foundation; either version 2.1 of the License, or (at your
|
||
|
|
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
|
||
|
|
|
||
|
|
This library is distributed in the hope that it will be useful, but WITHOUT
|
||
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||
|
|
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
|
||
|
|
more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public License
|
||
|
|
along with this library; if not, write to the Free Software Foundation, Inc.,
|
||
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
**********/
|
||
|
|
// "liveMedia"
|
||
|
|
// Copyright (c) 1996-2015 Live Networks, Inc. All rights reserved.
|
||
|
|
// Medium
|
||
|
|
// C++ header
|
||
|
|
|
||
|
|
#ifndef _MEDIA_HH
|
||
|
|
#define _MEDIA_HH
|
||
|
|
|
||
|
|
#ifndef _LIVEMEDIA_VERSION_HH
|
||
|
|
#include "liveMedia_version.hh"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef _HASH_TABLE_HH
|
||
|
|
#include "HashTable.hh"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef _USAGE_ENVIRONMENT_HH
|
||
|
|
#include "UsageEnvironment.hh"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// Lots of files end up needing the following, so just #include them here:
|
||
|
|
#ifndef _NET_COMMON_H
|
||
|
|
#include "NetCommon.h"
|
||
|
|
#endif
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
// The following makes the Borland compiler happy:
|
||
|
|
#ifdef __BORLANDC__
|
||
|
|
#define _strnicmp strnicmp
|
||
|
|
#define fabsf(x) fabs(x)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define mediumNameMaxLen 30
|
||
|
|
|
||
|
|
class Medium {
|
||
|
|
public:
|
||
|
|
static Boolean lookupByName(UsageEnvironment& env,
|
||
|
|
char const* mediumName,
|
||
|
|
Medium*& resultMedium);
|
||
|
|
static void close(UsageEnvironment& env, char const* mediumName);
|
||
|
|
static void close(Medium* medium); // alternative close() method using ptrs
|
||
|
|
// (has no effect if medium == NULL)
|
||
|
|
|
||
|
|
UsageEnvironment& envir() const {return fEnviron;}
|
||
|
|
|
||
|
|
char const* name() const {return fMediumName;}
|
||
|
|
|
||
|
|
// Test for specific types of media:
|
||
|
|
virtual Boolean isSource() const;
|
||
|
|
virtual Boolean isSink() const;
|
||
|
|
virtual Boolean isRTCPInstance() const;
|
||
|
|
virtual Boolean isRTSPClient() const;
|
||
|
|
virtual Boolean isRTSPServer() const;
|
||
|
|
virtual Boolean isMediaSession() const;
|
||
|
|
virtual Boolean isServerMediaSession() const;
|
||
|
|
virtual Boolean isDarwinInjector() const;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
friend class MediaLookupTable;
|
||
|
|
Medium(UsageEnvironment& env); // abstract base class
|
||
|
|
virtual ~Medium(); // instances are deleted using close() only
|
||
|
|
|
||
|
|
TaskToken& nextTask() {
|
||
|
|
return fNextTask;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
UsageEnvironment& fEnviron;
|
||
|
|
char fMediumName[mediumNameMaxLen];
|
||
|
|
TaskToken fNextTask;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
// A data structure for looking up a Medium by its string name.
|
||
|
|
// (It is used only to implement "Medium", but we make it visible here, in case developers want to use it to iterate over
|
||
|
|
// the whole set of "Medium" objects that we've created.)
|
||
|
|
class MediaLookupTable {
|
||
|
|
public:
|
||
|
|
static MediaLookupTable* ourMedia(UsageEnvironment& env);
|
||
|
|
HashTable const& getTable() { return *fTable; }
|
||
|
|
|
||
|
|
protected:
|
||
|
|
MediaLookupTable(UsageEnvironment& env);
|
||
|
|
virtual ~MediaLookupTable();
|
||
|
|
|
||
|
|
private:
|
||
|
|
friend class Medium;
|
||
|
|
|
||
|
|
Medium* lookup(char const* name) const;
|
||
|
|
// Returns NULL if none already exists
|
||
|
|
|
||
|
|
void addNew(Medium* medium, char* mediumName);
|
||
|
|
void remove(char const* name);
|
||
|
|
|
||
|
|
void generateNewName(char* mediumName, unsigned maxLen);
|
||
|
|
|
||
|
|
private:
|
||
|
|
UsageEnvironment& fEnv;
|
||
|
|
HashTable* fTable;
|
||
|
|
unsigned fNameGenerator;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
// The structure pointed to by the "liveMediaPriv" UsageEnvironment field:
|
||
|
|
class _Tables {
|
||
|
|
public:
|
||
|
|
static _Tables* getOurTables(UsageEnvironment& env, Boolean createIfNotPresent = True);
|
||
|
|
// returns a pointer to an "ourTables" structure (creating it if necessary)
|
||
|
|
void reclaimIfPossible();
|
||
|
|
// used to delete ourselves when we're no longer used
|
||
|
|
|
||
|
|
MediaLookupTable* mediaTable;
|
||
|
|
void* socketTable;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
_Tables(UsageEnvironment& env);
|
||
|
|
virtual ~_Tables();
|
||
|
|
|
||
|
|
private:
|
||
|
|
UsageEnvironment& fEnv;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|