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12 Feb 2007

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AdaptorChain Class Reference

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#include <AdaptorChain.hpp>

Inheritance diagram for AdaptorChain:

List of all members.

Public Member Functions
	AdaptorChain ()
	Constructor.
virtual	~AdaptorChain ()
	Destructor.
virtual list< Frame * >	adapt (Frame *frm)
	Virtual method, used to adapt a input Frame object to a list of output Frame objects.
virtual bool	addAdaptor (Adaptor *pAdaptor)
	Add a new Adaptor to the adaptor chain.
bool	pushFrontAdaptor (Adaptor *pAdaptor)
	adds an adaptor to the front of the adaptor list!
list< Adaptor * > *	getAdaptors ()
virtual list< Frame * >	close ()
	Close the adaptor chain, and flush all buffered Frame objects (if any).
virtual void	initialize ()
	Initialize internal data structures.
virtual u32	getTranscodingCosts () const
	returns adaptation costs (CPU only)
Protected Attributes
list< Adaptor * >	mAdaptorList
	List of Adaptor objects.

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Detailed Description

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Author:

Michael Kropfberger and Peter Schojer

Version:

Id

AdaptorChain.hpp,v 1.9 2005/06/19 14:47:22 mkropfbe Exp

Definition at line 60 of file AdaptorChain.hpp.

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Constructor & Destructor Documentation

AdaptorChain::AdaptorChain (   )

Constructor. Definition at line 48 of file AdaptorChain.cpp. { initialized = false; strcpy(name,"AdaptorChain"); }

AdaptorChain::~AdaptorChain (   )  [virtual]

Destructor. Definition at line 55 of file AdaptorChain.cpp. References mAdaptorList. { dprintf_full("AdaptorChain::~AdaptorChain()\n"); list < Adaptor * >::iterator adaptorIterator; for (adaptorIterator = mAdaptorList.begin(); adaptorIterator != mAdaptorList.end(); adaptorIterator++) { if (*adaptorIterator != NULL) delete *adaptorIterator; } }

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Member Function Documentation

list< Frame * > AdaptorChain::adapt (  Frame *  frm  )  [virtual]

Virtual method, used to adapt a input Frame object to a list of output Frame objects. Reimplemented from Adaptor. Definition at line 120 of file AdaptorChain.cpp. References Adaptor::adapt(), initialize(), and mAdaptorList. { list < Frame * >*inFrameList=NULL; list < Frame * >*outFrameList=NULL; list < Frame * >retFrameList; list < Adaptor * >::iterator adaptorIterator; Adaptor *adaptor=NULL; Frame *frame=NULL; Frame *tmpFrame=NULL; if (!initialized) initialize(); dprintf_full("AdaptorChain::adapt Input Frame is %p\n",frm); if (!initialized) { list<Frame*> tmp; return tmp; } inFrameList = new list < Frame * >; outFrameList = new list < Frame * >; inFrameList->push_back(frm); for (adaptorIterator = mAdaptorList.begin(); adaptorIterator != mAdaptorList.end(); adaptorIterator++) { adaptor = *adaptorIterator; //dprintf_full("AdaptorChain::adapt will use sub-adaptor %s\n",adaptor->getName()); // WARNING: // we never delete input frames // only intermediate frames created by an adaptor are deleted frame=NULL; while (!inFrameList->empty()) { frame = inFrameList->front(); //dprintf_full("AdaptorChain::adapt getting from inList Frame %p\n",frame); retFrameList = adaptor->adapt(frame); tmpFrame=NULL; while (!retFrameList.empty()) { tmpFrame=retFrameList.front(); retFrameList.pop_front(); //dprintf_full("AdaptorChain::adapt getting adaptation result Frame %p\n",tmpFrame); outFrameList->push_back(tmpFrame); if(frame && frame!=tmpFrame && frame!=frm) { dprintf_full("AdaptorChain::adapt deleting Frame %p\n",frame); delete frame; frame=NULL; } } if(frame && frame!=tmpFrame && frame!=frm) { // caching adaptors have to deep-copy dprintf_full("AdaptorChain::adapt deleting cached Frame %p\n",frame); delete frame; frame=NULL; } inFrameList->pop_front(); } delete inFrameList; // moving to next adaptor, outFrameList is going to be the new inFrameList inFrameList = outFrameList; outFrameList = new list < Frame * >; } delete outFrameList; list<Frame*> resultList=*inFrameList; delete inFrameList; return resultList; }

bool AdaptorChain::addAdaptor (  Adaptor *  pAdaptor  )  [virtual]

Add a new Adaptor to the adaptor chain. FIXME: check for valid chain not implemented! Parameters: pAdaptor  Pointer to Adaptor which should be added. Returns: true if adding pAdaptor creates a valid adaptor chain, false otherwise Definition at line 193 of file AdaptorChain.cpp. References mAdaptorList. Referenced by VideoAdaptorChain::clone(), AudioAdaptorChain::clone(), SpatialReductionAdaptor::initialize(), QualityReductionAdaptor::initialize(), ColorReductionAdaptor::initialize(), and DataChannel::visualizeCaching(). { // Some tricky check if inserting pAdaptor creates // a valid chain should be done here! mAdaptorList.push_back(pAdaptor); return true; }

list< Frame * > AdaptorChain::close (   )  [virtual]

Close the adaptor chain, and flush all buffered Frame objects (if any). Returns: List of Frame objects. Reimplemented from Adaptor. Definition at line 80 of file AdaptorChain.cpp. References mAdaptorList. { list < Frame * >l; list < Adaptor * >::iterator adaptorIterator; list < Frame * >::iterator li; for (adaptorIterator = mAdaptorList.begin(); adaptorIterator != mAdaptorList.end(); adaptorIterator++) { int size = l.size(); // feed all from l into the next adaptor // and store the returned results at the end of l while (size > 0) { li = l.begin(); list < Frame * >l2 = (*adaptorIterator)->adapt(*li); if( (*li) != (*(l2.begin())) ) delete (*li); list < Frame * >::iterator li2; while (!l2.empty()) { li2 = l2.begin(); l.push_back(*li2); l2.pop_front(); } l.pop_front(); // remove the first element, which is already adapted --size; } // after we have sent all frames returned from the previous close, // close this adaptor so that it is guaranteed empty list < Frame * >l2 = (*adaptorIterator)->close(); list < Frame * >::iterator li2; while (!l2.empty()) { li2 = l2.begin(); l.push_back(*li2); l2.pop_front(); } } return l; }

void AdaptorChain::initialize (   )  [virtual]

Initialize internal data structures. Implements Adaptor. Reimplemented in ColorReductionAdaptor, QualityReductionAdaptor, and SpatialReductionAdaptor. Definition at line 68 of file AdaptorChain.cpp. References mAdaptorList. Referenced by adapt(). { list < Adaptor * >::iterator adaptorIterator; initialized = true; for (adaptorIterator = mAdaptorList.begin(); adaptorIterator != mAdaptorList.end(); adaptorIterator++) { (*adaptorIterator)->initialize(); } };

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Member Data Documentation

list< Adaptor * > AdaptorChain::mAdaptorList [protected]

List of Adaptor objects. Definition at line 111 of file AdaptorChain.hpp. Referenced by adapt(), addAdaptor(), close(), getTranscodingCosts(), initialize(), pushFrontAdaptor(), and ~AdaptorChain().

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

• AdaptorChain.hpp
• AdaptorChain.cpp

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