윈도우 동영상 재생

#include <new>
#include <windows.h>
#include <windowsx.h>
#include <mfplay.h>
#include <mferror.h>
#include <shobjidl.h>   // defines IFileOpenDialog
#include <strsafe.h>
#include <Shlwapi.h>

#include <ctime>
#include "ELApplication.h"
#include "basic/ELAutoReleasePool.h"
#include "app_control/ELDirector.h"
#include "app_control/ELOpenGLView.h"


NS_BEGIN(elloop);

#pragma comment(lib,"Mfplay.lib")





Application* Application::_instance = nullptr;



// Implements the callback interface for MFPlay events.

class MediaPlayerCallback : public IMFPMediaPlayerCallback
{
long m_cRef; // Reference count

public:

MediaPlayerCallback() : m_cRef(1)
{
}

IFACEMETHODIMP QueryInterface(REFIID riid, void** ppv)
{
static const QITAB qit[] =
{
QITABENT(MediaPlayerCallback, IMFPMediaPlayerCallback),
{ 0 },
};
return QISearch(this, qit, riid, ppv);
}

IFACEMETHODIMP_(ULONG) AddRef()
{
return InterlockedIncrement(&m_cRef);
}

IFACEMETHODIMP_(ULONG) Release()
{
ULONG count = InterlockedDecrement(&m_cRef);
if (count == 0)
{
delete this;
return 0;
}
return count;
}

// IMFPMediaPlayerCallback methods
IFACEMETHODIMP_(void) OnMediaPlayerEvent(MFP_EVENT_HEADER *pEventHeader);
};


IMFPMediaPlayer         *g_pPlayer = NULL;      // The MFPlay player object.
MediaPlayerCallback     *g_pPlayerCB = NULL;    // Application callback object.

BOOL                    g_bHasVideo = FALSE;


template <class T> void SafeRelease(T **ppT)
{
if (*ppT)
{
(*ppT)->Release();
*ppT = NULL;
}
}


void OnMediaItemCreated(MFP_MEDIAITEM_CREATED_EVENT *pEvent)
{
// The media item was created successfully.

if (g_pPlayer)
{
BOOL    bHasVideo = FALSE;
BOOL    bIsSelected = FALSE;

// Check if the media item contains video.
HRESULT hr = pEvent->pMediaItem->HasVideo(&bHasVideo, &bIsSelected);
if (SUCCEEDED(hr))
{
g_bHasVideo = bHasVideo && bIsSelected;

// Set the media item on the player. This method completes
// asynchronously.
hr = g_pPlayer->SetMediaItem(pEvent->pMediaItem);
}

if (FAILED(hr))
{

MessageBox(NULL, L"", L"Error playing this file.", 0);
//ShowErrorMessage(L"Error playing this file.", hr);
}
}
}

void OnMediaItemSet(MFP_MEDIAITEM_SET_EVENT * /*pEvent*/)
{
HRESULT hr = g_pPlayer->Play();
if (FAILED(hr))
{
MessageBox(NULL, L"", L"IMFPMediaPlayer::Play failed.", 0);
//ShowErrorMessage(L"IMFPMediaPlayer::Play failed.", hr);
}
}


void MediaPlayerCallback::OnMediaPlayerEvent(MFP_EVENT_HEADER * pEventHeader)
{
if (FAILED(pEventHeader->hrEvent))
{
MessageBox(NULL, L"", L"Playback error", 0);
//ShowErrorMessage(L"Playback error", pEventHeader->hrEvent);

return;
}

switch (pEventHeader->eEventType)
{
case MFP_EVENT_TYPE_MEDIAITEM_CREATED:
OnMediaItemCreated(MFP_GET_MEDIAITEM_CREATED_EVENT(pEventHeader));
break;

case MFP_EVENT_TYPE_MEDIAITEM_SET:
OnMediaItemSet(MFP_GET_MEDIAITEM_SET_EVENT(pEventHeader));
break;
}
}



bool Application::init()
{

    auto director = Director::getInstance();
    auto glView = director->getGLView();
    if (!glView)
    {
        auto view = OpenGLView::create(_hInstance, _T("OpenGL ES 2.0"));
        assert(view);
        view->setWindowEventListener(this);
        director->setGLView(view);



    }
    return true;
}

int Application::run()
{

auto director = Director::getInstance();



    if (!applicationDidFinishLaunching())
    {
        return -1;
    }



    if (!director->getGLView())
    {
        return -1;
    }

   director->getGLView()->show();
 


    MSG msg = { 0 };

    while (msg.message != WM_QUIT)
    {
        if (WM_CLOSE == msg.message || WM_DESTROY == msg.message)
        {
            break;
        }
        if (PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
        else
        {
            // clean autorelease objects.
            PoolManager::getInstance()->recycle();

director->mainLoop();           
        }
    }

    director->end();
    PoolManager::getInstance()->purge();

    return 0;
}

Application::Application() :
_hInstance(nullptr)
{
    _hInstance = GetModuleHandle(nullptr);
    init();
    _instance = this;
}

HRESULT PlayMediaFile(HWND hwnd, PCWSTR pszURL)
{
HRESULT hr = S_OK;

// Create the MFPlayer object.
if (g_pPlayer == NULL)
{
g_pPlayerCB = new (std::nothrow) MediaPlayerCallback();

if (g_pPlayerCB == NULL)
{
return E_OUTOFMEMORY;
}

hr = MFPCreateMediaPlayer(
NULL,
FALSE,          // Start playback automatically?
0,              // Flags
g_pPlayerCB,    // Callback pointer
hwnd,           // Video window
&g_pPlayer
);
}

// Create a new media item for this URL.

if (SUCCEEDED(hr))
{
hr = g_pPlayer->CreateMediaItemFromURL(pszURL, FALSE, 0, NULL);
}

// The CreateMediaItemFromURL method completes asynchronously.
// The application will receive an MFP_EVENT_TYPE_MEDIAITEM_CREATED
// event. See MediaPlayerCallback::OnMediaPlayerEvent().

return hr;
}


void OnFileOpen(HWND hwnd)
{
IFileOpenDialog *pFileOpen = NULL;
IShellItem *pItem = NULL;
PWSTR pwszFilePath = NULL;

// Create the FileOpenDialog object.
HRESULT hr = CoCreateInstance(__uuidof(FileOpenDialog), NULL,
CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pFileOpen));
if (SUCCEEDED(hr))
{
hr = pFileOpen->SetTitle(L"Select a File to Play");
}

// Show the file-open dialog.
if (SUCCEEDED(hr))
{
hr = pFileOpen->Show(hwnd);
}

if (hr == HRESULT_FROM_WIN32(ERROR_CANCELLED))
{
// User canceled.
SafeRelease(&pFileOpen);
return;
}

// Get the file name from the dialog.
if (SUCCEEDED(hr))
{
hr = pFileOpen->GetResult(&pItem);
}

if (SUCCEEDED(hr))
{
hr = pItem->GetDisplayName(SIGDN_URL, &pwszFilePath);
}

// Open the media file.
if (SUCCEEDED(hr))
{
hr = PlayMediaFile(hwnd, pwszFilePath);
}

if (FAILED(hr))
{
MessageBox(hwnd,L"", L"Could not open file.", 0);
}

CoTaskMemFree(pwszFilePath);
SafeRelease(&pItem);
SafeRelease(&pFileOpen);
}

LRESULT Application::onEvent(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch (msg)
    {
        case WM_CREATE:
            MessageBox(nullptr, _T("hello"), _T("title"), 0);
            break;
case WM_LBUTTONUP:
{
OnFileOpen(hWnd);
break;
}
case WM_RBUTTONUP:
{
break;
}
case WM_PAINT:
{
/*
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hWnd, &ps);

if (g_pPlayer && g_bHasVideo)
{
// Playback has started and there is video.

// Do not draw the window background, because the video
// frame fills the entire client area.

g_pPlayer->UpdateVideo();
}
else
{
// There is no video stream, or playback has not started.
// Paint the entire client area.
FillRect(hdc, &ps.rcPaint, (HBRUSH)(COLOR_WINDOW + 1));
}

EndPaint(hWnd, &ps);
*/


break;
}
case WM_SIZE:
{
//if (state == SIZE_RESTORED)
{
if (g_pPlayer)
{
// Resize the video.
g_pPlayer->UpdateVideo();
}
}

break;
}
        case WM_CLOSE:
        case WM_DESTROY:
            PostQuitMessage(0);
            break;
        default:
            return DefWindowProc(hWnd, msg, wParam, lParam);
            break;
    }
    return S_OK;
}

Application* Application::getInstance()
{
    return _instance;
}

NS_END(elloop);