#include "stdafx.h"

#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

#include "KTGA_IO.h"
#include <kfile/KStream.h>
#include <dump/XException.h>


//=============================================================================
bool TGAReadImage (KStream* stream, int* width, int* height, int* bitDepth, BYTE** pixels)
{
	//===================//
	// Read TARGA header //
	//===================//
	int nHeaderSize = sizeof(TGAHeaderInfo);
	TGAHeaderInfo TGAHeader;
	if (stream->Read((&TGAHeader), nHeaderSize) != nHeaderSize)
	{
		_oprint( "ERROR! Bad Targa header!\n" );
		return false;
	}

	(*width)      = TGAHeader.imwidth;
	(*height)     = TGAHeader.imheight;
	(*bitDepth)   = TGAHeader.imdepth;
	int numTexels = (*width) * (*height) * ((*bitDepth)/8);

	//============================//
	// Allocate memory for texels //
	//============================//
	(*pixels) = new BYTE [numTexels];
	if ((*pixels) == NULL)
	{
		_oprint( "ERROR allocating memory for pixels\n");
		return false;
	}

	//=========================//
	// Read texels into memory //
	//=========================//
	if (stream->Read( (*pixels), sizeof(BYTE)*numTexels) != (unsigned)numTexels)
	{      
		_oprint( "ERROR! Couldn't read texels!\n");
		return false;
	}

	return true;
}