// libimgplayer.cpp : 定义应用程序的类行为。
//

#include "stdafx.h"
#include "libimgplayer.h"
#include "CImgPlayerDlg.h"


class libimgplayer_impl
{
private:
	CImgPlayerDlg *m_pDlg;
	HANDLE m_hPlayThread;
	DWORD m_nPlaythreadId;
	BOOL m_bIsPlay;
	CImgPlayConfig m_stPlayConfig;
	CImgHostApi *m_pHostApi;

	VOID PlayDlg()
	{
		if (m_stPlayConfig.nWndX < 0 || m_stPlayConfig.nWndY < 0 || m_stPlayConfig.nWndWidth < 0 
			|| m_stPlayConfig.nWndHeight < 0 || m_stPlayConfig.nPlayCnt < 0 
			|| m_stPlayConfig.nPlayInterval < 0|| m_stPlayConfig.nFileCnt <= 0)
			return;
		if (m_pDlg != NULL)
			return;
		AFX_MANAGE_STATE(AfxGetStaticModuleState());
		m_pDlg = new CImgPlayerDlg(&m_stPlayConfig);
		//m_pHostApi->ImgDebug("Ok to initialize CImgDlg!");
		INT_PTR nResponse = m_pDlg->DoModal();

		delete m_pDlg;
		m_pDlg = NULL;

		if (nResponse == IDCANCEL){
			// 表示是执行OnCancel或OnClose或StopPlay关闭的
			CloseHandle(m_hPlayThread);
			m_hPlayThread = NULL;
		}
	}

	static unsigned int __stdcall ImgPlayThread(LPVOID param)
	{
		int i = 0;
		CoInitialize(NULL);
		libimgplayer_impl *p = (libimgplayer_impl *)param;
		p->PlayDlg();

		CoUninitialize();
		return 0;
	}
public:
	libimgplayer_impl(CImgHostApi *pHostApi)
		: m_pDlg(NULL), m_hPlayThread(NULL), m_nPlaythreadId(0), m_bIsPlay(FALSE)
	{
		m_pHostApi = pHostApi;
		memset(&m_stPlayConfig, 0, sizeof(m_stPlayConfig));
	}

	~libimgplayer_impl()
	{
		m_pHostApi = NULL;
	}

	BOOL isStop(){ return !m_bIsPlay; }

	BOOL CheckIsPlay(HANDLE &playThread)
	{
		if (NULL == m_hPlayThread) {
			return FALSE;
		}

		DWORD exitCode = 0;
		if (GetExitCodeThread(m_hPlayThread, &exitCode) && STILL_ACTIVE == exitCode){
			playThread = m_hPlayThread;
			return TRUE;
		}
		else {
			return FALSE;
		}
	}

	BOOL StartPlayMedia(CImgPlayConfig &config)
	{
		if (m_bIsPlay){
			if (m_pDlg != NULL) {
				return TRUE;
			}
		}
		else {
			m_bIsPlay = TRUE;
		}

		memcpy(&m_stPlayConfig, &config, sizeof(CImgPlayConfig));
		m_hPlayThread = (HANDLE)_beginthreadex(NULL, 0, ImgPlayThread, (LPVOID)this, 0, (unsigned int*)&m_nPlaythreadId);
		return TRUE;
	}

	BOOL StartPlay(int nCfgInx, int nWndX, int nWndY, int nWndWidth, int nWndHeight)
	{
		if (m_bIsPlay){
			if (m_pDlg != NULL) {
				return TRUE;
			}
		}
		else {
			m_bIsPlay = TRUE;
		}
			
		m_stPlayConfig.nWndX = nWndX;
		m_stPlayConfig.nWndY = nWndY;
		m_stPlayConfig.nWndWidth = nWndWidth;
		m_stPlayConfig.nWndHeight = nWndHeight;
		BOOL bRet = m_pHostApi->LoadPlayConfig(m_stPlayConfig, nCfgInx);
		if (!bRet){
			m_pHostApi->ImgDebug("Load ImgConfiguration failed!");
			return FALSE;
		}
		else{
			m_pHostApi->ImgDebug("Load ImgConfiguration succeeded while play local image!");
			m_pHostApi->ImgDebug("m_stPlayConfig.strRootPath: %s", m_stPlayConfig.strRootPath);
		}

		m_hPlayThread = (HANDLE)_beginthreadex(NULL, 0, ImgPlayThread, (LPVOID)this, 0, (unsigned int*)&m_nPlaythreadId);		
		return TRUE;
	}

	BOOL StopPlay()
	{
		if (m_pDlg != NULL){
			if (m_hPlayThread != NULL){
				::PostMessage(m_pDlg->GetSafeHwnd(), WM_CLOSE, NULL, NULL);
				WaitForSingleObject(m_hPlayThread, INFINITE);
			}
		}

		m_bIsPlay = FALSE;

		return TRUE;
	}
};

Clibimgplayer::Clibimgplayer(CImgHostApi *pHostApi)
{
	m_pImpl = new libimgplayer_impl(pHostApi);
	return;
}

Clibimgplayer::~Clibimgplayer()
{
	delete m_pImpl;
	m_pImpl = NULL;
}

VOID Clibimgplayer::Play(int nCfgInx, int nWndX, int nWndY, int nWndWidth, int nWndHeight)
{
	m_pImpl->StartPlay(nCfgInx, nWndX, nWndY, nWndWidth, nWndHeight);
}

VOID Clibimgplayer::PlayMedia(CImgPlayConfig &config)
{
	m_pImpl->StartPlayMedia(config);
}

BOOL Clibimgplayer::checkIsStop(){
	return m_pImpl->isStop();
}

BOOL Clibimgplayer::checkIsPlay(HANDLE &curThread)
{
	return m_pImpl->CheckIsPlay(curThread);
}

VOID Clibimgplayer::Close()
{
	m_pImpl->StopPlay();
}