// videowndchn.cpp : implementation file

//



#include "stdafx.h"

#include "videowndchn.h"



#ifdef _DEBUG

#define new DEBUG_NEW

#undef THIS_FILE

static char THIS_FILE[] = __FILE__;

#endif



#define		VIDEOWND_STATIC	4600

/////////////////////////////////////////////////////////////////////////////

// VideoWndChn



VideoWndChn::VideoWndChn()

{

	m_hVideoWnd = NULL;

	m_lHandle   = 0;

	m_nStreamInx = -1;

}



VideoWndChn::~VideoWndChn()

{

	if(m_hVideoWnd)

	{

		m_hVideoWnd->DestroyWindow();

		delete m_hVideoWnd;

		m_hVideoWnd = NULL;

	}

}



BEGIN_MESSAGE_MAP(VideoWndChn, CWnd)

	//{{AFX_MSG_MAP(VideoWndChn)

	//}}AFX_MSG_MAP

END_MESSAGE_MAP()



/////////////////////////////////////////////////////////////////////////////

// VideoWndChn message handlers

void VideoWndChn::SetWndSize(int bAutoScan)

{

	if(!m_hVideoWnd)

		return;

	CRect  rcBkSize;

	float  fHWScale;

	int    nX, nY, nNewW, nNewH;

	MRAVSTREAM_T stStream;

	rcBkSize = m_clientRect;

	if(!m_lHandle || !bAutoScan || m_nStreamInx < 0)

	{

		m_hVideoWnd->MoveWindow(&rcBkSize);

		return;

	}

	if(MRNSDK_Stream_GetStream(m_lHandle, m_nStreamInx, &stStream) || stStream.codec_type != AVMEDIA_TYPE_VIDEO)

	{

		m_hVideoWnd->MoveWindow(&rcBkSize);

		return;

	}

	

	fHWScale = (float)stStream.nHeight / (float)stStream.nWidth;

	nNewW    = rcBkSize.Width();

	nNewH    = (int)((float)nNewW * fHWScale);

	if(nNewH > rcBkSize.Height())

	{

		nNewH = rcBkSize.Height();

		nNewW = (int)((float)nNewH / fHWScale);

	}

	nX = (rcBkSize.Width() - nNewW) / 2;

	nY = (rcBkSize.Height() - nNewH) / 2;

	m_hVideoWnd->MoveWindow(nX, nY, nNewW, nNewH);

}