#include <qdebug></qdebug>

#include "t32bitsrv_wrap.h"

//================================================================================

int t32bitsrv::BufferExchanger::read(const char *srcBuf, int len)

{

	m_data = (UCHAR *)memcpy(m_data, srcBuf, len);

	return len;

}

//--------------------------------------------------------------------------------

int t32bitsrv::BufferExchanger::write(char *dstBuf, int len)

{

	memcpy(dstBuf, m_data, len);

	m_data += len;

	return len;

}

//================================================================================

template <typename pixel=""></typename>

int t32bitsrv::RasterExchanger<pixel>::read(const char *srcBuf, int len)</pixel>

{

	if (m_ras->getWrap() == m_ras->getLx()) {

		memcpy(m_pix, srcBuf, len);

		m_pix = (PIXEL *)((UCHAR *)m_pix + len);

	} else {

		int xStart = (m_pix - m_ras->pixels(0)) % m_ras->getWrap();

		int remainingData = len;

		int lineData = m_ras->getLx() * sizeof(PIXEL);

		int lineDataToRead = tmin((int)((m_ras->getLx() - xStart) * sizeof(PIXEL)), remainingData);

		for (; remainingData > 0;

			 m_pix += (m_ras->getWrap() - xStart),

			 remainingData -= lineDataToRead,

			 lineDataToRead = tmin(lineData, remainingData),

			 xStart = 0)

			memcpy(m_pix, srcBuf, lineDataToRead);

	}

	return len;

}

//--------------------------------------------------------------------------------

template <typename pixel=""></typename>

int t32bitsrv::RasterExchanger<pixel>::write(char *dstBuf, int len)</pixel>

{

	//We pass entire pixels, not just bytes

	len = len - (len % sizeof(PIXEL));

	if (m_ras->getWrap() == m_ras->getLx()) {

		memcpy(dstBuf, m_pix, len);

		m_pix = (PIXEL *)((UCHAR *)m_pix + len);

	} else {

		int xStart = (m_pix - m_ras->pixels(0)) % m_ras->getWrap();

		int remainingData = len;

		int lineData = m_ras->getLx() * sizeof(PIXEL);

		int lineDataToWrite = tmin((int)((m_ras->getLx() - xStart) * sizeof(PIXEL)), remainingData);

		for (; remainingData > 0;

			 m_pix += (m_ras->getWrap() - xStart),

			 remainingData -= lineDataToWrite,

			 lineDataToWrite = tmin(lineData, remainingData),

			 xStart = 0)

			memcpy(dstBuf, m_pix, lineDataToWrite);

	}

	return len;

}

//--------------------------------------------------------------------------------

//  Explicit specialization of raster exchangers

template class DVAPI t32bitsrv::RasterExchanger<tpixel32>;</tpixel32>

//================================================================================