SegmentTransformation.cxx

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/*
 * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include "SegmentTransformation.hxx"

namespace CLAM
{
        void SegmentTransformation::WrapFrameTransformation( FrameTransformation* trans)
        {
                CLAM_ASSERT( !mFrameTransformation, "SegmentTransformation::Wrapp object shoudn't have wrapped transformation");
                mFrameTransformation = trans;
        }
        
        SegmentTransformation::SegmentTransformation()
                : mOnCtrl("On",this)
                , mAmountCtrl("Amount",this)
        {
                mInput = 0;
                mOutput = 0;
                mUseTemporalBPF = 0;
                mCurrentInputFrame = 0;
                mFrameTransformation = 0;
        }

        SegmentTransformation::SegmentTransformation(const SegmentTransformationConfig& c) 
                : mOnCtrl("On",this)
                , mAmountCtrl("Amount",this)
        {
                mInput = 0;
                mOutput = 0;
                mUseTemporalBPF = 0;
                mCurrentInputFrame = 0;
                Configure(c);
                mFrameTransformation = 0;
        }

        SegmentTransformation::~SegmentTransformation()
        {
                if (mFrameTransformation)
                        delete mFrameTransformation;
        };
        
        bool SegmentTransformation::Do(const Segment& in, Segment& out)
        {
                CLAM_ASSERT(mInput==&in, "sms transformation chain needs input segment");
                //TODO find out why this finalization condition (and not just using size)
                while( mCurrentInputFrame<in.mCurrentFrameIndex)
                {
                        if(mUseTemporalBPF)
                                UpdateControlValueFromBPF(((TData)in.mCurrentFrameIndex)/in.GetnFrames());
                        
                        AddFramesToOutputIfInputIsLonger(mCurrentInputFrame, in, out);
                        
                        const Frame & inframe = in.GetFrame(mCurrentInputFrame);
                        Frame & outframe = out.GetFrame(mCurrentInputFrame);

                        if (mFrameTransformation)
                        {
                                mFrameTransformation->Do(inframe, outframe);
                        }
                        else //TODO remove when refactoring is done 
                        {
                                Do( inframe, outframe );
                        }
                        

                        
                        if(&in!=&out)
                                out.mCurrentFrameIndex++;
                        
                        mCurrentInputFrame++;
                }
                return true;
        }

        bool SegmentTransformation::ConcreteConfigure(const ProcessingConfig& c)
        {
                CopyAsConcreteConfig(mConfig, c);
                mUseTemporalBPF=false;
                if(mConfig.HasAmount())
                {
                        mAmountCtrl.DoControl(mConfig.GetAmount());                                                             
                }
                else if(mConfig.HasBPFAmount()){
                        mAmountCtrl.DoControl(mConfig.GetBPFAmount().GetValue(0));              
                        mUseTemporalBPF=true;
                }
                else
                {
                        mAmountCtrl.DoControl(0);                                                                               
                }

                return true;
        }       

        bool SegmentTransformation::UpdateControlValueFromBPF(TData pos)
        {
                if(mConfig.HasBPFAmount())
                {
                        TControlData amount = mConfig.GetBPFAmount().GetValue(pos);
                        mAmountCtrl.DoControl(amount);
                        return true;
                }
                else return false;
        }

        bool SegmentTransformation::IsLastFrame()
        {
                bool isLast=mInput->mCurrentFrameIndex >= mInput->GetnFrames();
                
                if(isLast)
                {
                        while(mOutput->GetnFrames()>=mOutput->mCurrentFrameIndex)
                        {
                                mOutput->DeleteFrame(mOutput->GetnFrames()-1);
                        }
                }
                return isLast;
        }

        bool SegmentTransformation::ConcreteStart()
        {
                return true;
        }



}