/***************************************************************************
 *   Copyright (C) 2004 by Johan Maes - ON4QZ                              *
 *   on4qz@telenet.be                                                      *
 *   http://users.telenet.be/on4qz                                         *
 *                                                                         *
 *   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 "pdmode.h"
#include "configdialog.h"
#include "dspfunctions.h"
#include "imageview.h"
#include "qsstvglobal.h"
#include <debugplot.h>


pdMode::pdMode(QObject *parent, const char *name)
 : modeBase(parent, name)
{
}


pdMode::~pdMode()
{
	
}

void pdMode::init (sstvMode imode,imageView *p,bool tx,bool initClock)
{
	modeBase::init(imode,p,tx,initClock);
	visibleLineLength=(((float)(lineTimeTable[9]))/5.-fp-bp-3*blank-syncDuration)/4.;		
}


/*! \fn pdMode::setupLine(int &subln,unsigned char **buf)
		\brief Decode a PD mode sstv image
	
		\param subln every line to display is divided in a number of sublines
		\param buf pointer to the pixel array.
	 	\return next phase off the display
*/ 

embState pdMode::setupLine(int &subln,unsigned char **buf)
{
	switch(subln)
		{
			case 0:
				calcPixelPositionTable(YLINEODD,FALSE);
				*buf=yArray;
				return PIXELS;
			case 1:
				calcPixelPositionTable(REDLINE,FALSE);
				*buf=redArray;
				return PIXELS;
			case 2:
				calcPixelPositionTable(BLUELINE,FALSE);
				*buf=blueArray;
				return PIXELS;
			case 3:
				calcPixelPositionTable(YLINEEVEN,FALSE);
				*buf=greenArray;
				return PIXELS;				
			case 4:
				debugPtr->state=stSync;
				syncPosition=(unsigned int)round(lineTimeTable[lineCounter+1]);
				return SYNC;
			default:
				return ENDOFLINE;
		}
}



void pdMode::calcPixelPositionTable(unsigned int colorLine,bool tx)
{
	unsigned int i;
	int ofx=0;
	if(tx) ofx=1;
	double start=0;
	if(lineCounter!=0) start=lineTimeTable[lineCounter-1];
	debugPtr->state=colorLine;
	switch (colorLine)
		{
			case YLINEODD:
				start+=0;
				for(i=0;i<activeSSTVParam.numberOfPixels;i++)
					{
						pixelPositionTable[i]=(unsigned int)round(start+(((float)(i+ofx)*visibleLineLength)/activeSSTVParam.numberOfPixels));
					}
			break;
			case REDLINE:
				start+=(blank+visibleLineLength);
				for(i=0;i<activeSSTVParam.numberOfPixels;i++)
					{
						pixelPositionTable[i]=(unsigned int)round(start+(((float)(i+ofx)*visibleLineLength)/activeSSTVParam.numberOfPixels));
					}
			break;
			case BLUELINE:
				start+=2*blank+2*visibleLineLength;
				for(i=0;i<activeSSTVParam.numberOfPixels;i++)
					{
						pixelPositionTable[i]=(unsigned int)round(start+(((float)(i+ofx)*visibleLineLength)/activeSSTVParam.numberOfPixels));
					}
			break;
			case YLINEEVEN:
				start+=(3*blank+3*visibleLineLength);
				for(i=0;i<activeSSTVParam.numberOfPixels;i++)
					{
						pixelPositionTable[i]=(unsigned int)round(start+(((float)(i+ofx)*visibleLineLength)/activeSSTVParam.numberOfPixels));
					}
			break;
		}
}

bool pdMode::showLine()
{
	colorConversion(yArray,lineCounter);
	lineCounter++;
	colorConversion(greenArray,lineCounter);
	lineCounter++;
	if (lineCounter>=activeSSTVParam.numberOfLines) return TRUE;
	return FALSE;
}	

embState pdMode::txSetupLine(int &subln,unsigned char **buf)
{
		switch(subln)
		{
			case 0:
				calcPixelPositionTable(YLINEODD,TRUE);
				*buf=yArray;
				return PIXELS;
			case 1:
				txFreq=1500.;
				txDur=blank;
				return TXGAP;
			case 2:
				calcPixelPositionTable(REDLINE,TRUE);
				*buf=redArray;
				return PIXELS;
			case 3:
				txFreq=1500;
				txDur=blank;
				return TXGAP;
			case 4:
				calcPixelPositionTable(BLUELINE,TRUE);
				*buf=blueArray;
				return PIXELS;
			case 5:
				txFreq=1500;
				txDur=blank;
				return TXGAP;
			case 6:
				calcPixelPositionTable(YLINEEVEN,TRUE);
				*buf=greenArray;
				return PIXELS;
			case 7:
				txFreq=1500;
				txDur=fp;
				return TXGAP;
			case 8:
				txFreq=1200;
				txDur=syncDuration;
				return TXGAP;
			case 9:
				txFreq=1500;
				txDur=bp;
				return TXGAP;	
			default:
				lineCounter++;
				return ENDOFLINE;
		}
}

void pdMode::getLine()
{
	getLineY(TRUE);
}