videoctl.cpp

包裝ffmpeg中的codecs成為DirectShow中的transform filter

//------------------------------------------------------------------------------
// File: VideoCtl.cpp
//
// Desc: DirectShow base classes.
//
// Copyright (c) 1992-2002 Microsoft Corporation.  All rights reserved.
//------------------------------------------------------------------------------


#include <streams.h>
#include "ddmm.h"

// Load a string from the resource file string table. The buffer must be at
// least STR_MAX_LENGTH bytes. The easiest way to use this is to declare a
// buffer in the property page class and use it for all string loading. It
// cannot be static as multiple property pages may be active simultaneously

TCHAR *WINAPI StringFromResource(TCHAR *pBuffer, int iResourceID)
{
    if (LoadString(g_hInst,iResourceID,pBuffer,STR_MAX_LENGTH) == 0) {
        return TEXT("");
    }
    return pBuffer;
}

#ifdef UNICODE
char *WINAPI StringFromResource(char *pBuffer, int iResourceID)
{
    if (LoadStringA(g_hInst,iResourceID,pBuffer,STR_MAX_LENGTH) == 0) {
        return "";
    }
    return pBuffer;
}
#endif



// Property pages typically are called through their OLE interfaces. These
// use UNICODE strings regardless of how the binary is built. So when we
// load strings from the resource file we sometimes want to convert them
// to UNICODE. This method is passed the target UNICODE buffer and does a
// convert after loading the string (if built UNICODE this is not needed)
// On WinNT we can explicitly call LoadStringW which saves two conversions

#ifndef UNICODE

WCHAR * WINAPI WideStringFromResource(WCHAR *pBuffer, int iResourceID)
{
    *pBuffer = 0;

    if (g_amPlatform == VER_PLATFORM_WIN32_NT) {
	LoadStringW(g_hInst,iResourceID,pBuffer,STR_MAX_LENGTH);
    } else {

	CHAR szBuffer[STR_MAX_LENGTH];
	DWORD dwStringLength = LoadString(g_hInst,iResourceID,szBuffer,STR_MAX_LENGTH);
	// if we loaded a string convert it to wide characters, ensuring
	// that we also null terminate the result.
	if (dwStringLength++) {
	    MultiByteToWideChar(CP_ACP,0,szBuffer,dwStringLength,pBuffer,STR_MAX_LENGTH);
	}
    }
    return pBuffer;
}

#endif


// Helper function to calculate the size of the dialog

BOOL WINAPI GetDialogSize(int iResourceID,
                          DLGPROC pDlgProc,
                          LPARAM lParam,
                          SIZE *pResult)
{
    RECT rc;
    HWND hwnd;

    // Create a temporary property page

    hwnd = CreateDialogParam(g_hInst,
                             MAKEINTRESOURCE(iResourceID),
                             GetDesktopWindow(),
                             pDlgProc,
                             lParam);
    if (hwnd == NULL) {
        return FALSE;
    }

    GetWindowRect(hwnd, &rc);
    pResult->cx = rc.right - rc.left;
    pResult->cy = rc.bottom - rc.top;

    DestroyWindow(hwnd);
    return TRUE;
}


// Class that aggregates on the IDirectDraw interface. Although DirectDraw
// has the ability in its interfaces to be aggregated they're not currently
// implemented. This makes it difficult for various parts of Quartz that want
// to aggregate these interfaces. In particular the video renderer passes out
// media samples that expose IDirectDraw and IDirectDrawSurface. The filter
// graph manager also exposes IDirectDraw as a plug in distributor. For these
// objects we provide these aggregation classes that republish the interfaces

STDMETHODIMP CAggDirectDraw::NonDelegatingQueryInterface(REFIID riid, void **ppv)
{
    ASSERT(m_pDirectDraw);

    // Do we have this interface

    if (riid == IID_IDirectDraw) {
        return GetInterface((IDirectDraw *)this,ppv);
    } else {
        return CUnknown::NonDelegatingQueryInterface(riid,ppv);
    }
}


STDMETHODIMP CAggDirectDraw::Compact()
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->Compact();
}


STDMETHODIMP CAggDirectDraw::CreateClipper(DWORD dwFlags,LPDIRECTDRAWCLIPPER *lplpDDClipper,IUnknown *pUnkOuter)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->CreateClipper(dwFlags,lplpDDClipper,pUnkOuter);
}


STDMETHODIMP CAggDirectDraw::CreatePalette(DWORD dwFlags,LPPALETTEENTRY lpColorTable,LPDIRECTDRAWPALETTE *lplpDDPalette,IUnknown *pUnkOuter)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->CreatePalette(dwFlags,lpColorTable,lplpDDPalette,pUnkOuter);
}


STDMETHODIMP CAggDirectDraw::CreateSurface(LPDDSURFACEDESC lpDDSurfaceDesc,LPDIRECTDRAWSURFACE *lplpDDSurface,IUnknown *pUnkOuter)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->CreateSurface(lpDDSurfaceDesc,lplpDDSurface,pUnkOuter);
}


STDMETHODIMP CAggDirectDraw::DuplicateSurface(LPDIRECTDRAWSURFACE lpDDSurface,LPDIRECTDRAWSURFACE *lplpDupDDSurface)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->DuplicateSurface(lpDDSurface,lplpDupDDSurface);
}


STDMETHODIMP CAggDirectDraw::EnumDisplayModes(DWORD dwSurfaceDescCount,LPDDSURFACEDESC lplpDDSurfaceDescList,LPVOID lpContext,LPDDENUMMODESCALLBACK lpEnumCallback)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->EnumDisplayModes(dwSurfaceDescCount,lplpDDSurfaceDescList,lpContext,lpEnumCallback);
}


STDMETHODIMP CAggDirectDraw::EnumSurfaces(DWORD dwFlags,LPDDSURFACEDESC lpDDSD,LPVOID lpContext,LPDDENUMSURFACESCALLBACK lpEnumCallback)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->EnumSurfaces(dwFlags,lpDDSD,lpContext,lpEnumCallback);
}


STDMETHODIMP CAggDirectDraw::FlipToGDISurface()
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->FlipToGDISurface();
}


STDMETHODIMP CAggDirectDraw::GetCaps(LPDDCAPS lpDDDriverCaps,LPDDCAPS lpDDHELCaps)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->GetCaps(lpDDDriverCaps,lpDDHELCaps);
}


STDMETHODIMP CAggDirectDraw::GetDisplayMode(LPDDSURFACEDESC lpDDSurfaceDesc)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->GetDisplayMode(lpDDSurfaceDesc);
}


STDMETHODIMP CAggDirectDraw::GetFourCCCodes(LPDWORD lpNumCodes,LPDWORD lpCodes)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->GetFourCCCodes(lpNumCodes,lpCodes);
}


STDMETHODIMP CAggDirectDraw::GetGDISurface(LPDIRECTDRAWSURFACE *lplpGDIDDSurface)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->GetGDISurface(lplpGDIDDSurface);
}


STDMETHODIMP CAggDirectDraw::GetMonitorFrequency(LPDWORD lpdwFrequency)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->GetMonitorFrequency(lpdwFrequency);
}


STDMETHODIMP CAggDirectDraw::GetScanLine(LPDWORD lpdwScanLine)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->GetScanLine(lpdwScanLine);
}


STDMETHODIMP CAggDirectDraw::GetVerticalBlankStatus(LPBOOL lpblsInVB)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->GetVerticalBlankStatus(lpblsInVB);
}


STDMETHODIMP CAggDirectDraw::Initialize(GUID *lpGUID)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->Initialize(lpGUID);
}


STDMETHODIMP CAggDirectDraw::RestoreDisplayMode()
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->RestoreDisplayMode();
}


STDMETHODIMP CAggDirectDraw::SetCooperativeLevel(HWND hWnd,DWORD dwFlags)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->SetCooperativeLevel(hWnd,dwFlags);
}


STDMETHODIMP CAggDirectDraw::SetDisplayMode(DWORD dwWidth,DWORD dwHeight,DWORD dwBpp)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->SetDisplayMode(dwWidth,dwHeight,dwBpp);
}


STDMETHODIMP CAggDirectDraw::WaitForVerticalBlank(DWORD dwFlags,HANDLE hEvent)
{
    ASSERT(m_pDirectDraw);
    return m_pDirectDraw->WaitForVerticalBlank(dwFlags,hEvent);
}


// Class that aggregates an IDirectDrawSurface interface. Although DirectDraw
// has the ability in its interfaces to be aggregated they're not currently
// implemented. This makes it difficult for various parts of Quartz that want
// to aggregate these interfaces. In particular the video renderer passes out
// media samples that expose IDirectDraw and IDirectDrawSurface. The filter
// graph manager also exposes IDirectDraw as a plug in distributor. For these
// objects we provide these aggregation classes that republish the interfaces

STDMETHODIMP CAggDrawSurface::NonDelegatingQueryInterface(REFIID riid, void **ppv)
{
    ASSERT(m_pDirectDrawSurface);

    // Do we have this interface

    if (riid == IID_IDirectDrawSurface) {
        return GetInterface((IDirectDrawSurface *)this,ppv);
    } else {
        return CUnknown::NonDelegatingQueryInterface(riid,ppv);
    }
}


STDMETHODIMP CAggDrawSurface::AddAttachedSurface(LPDIRECTDRAWSURFACE lpDDSAttachedSurface)
{
    ASSERT(m_pDirectDrawSurface);
    return m_pDirectDrawSurface->AddAttachedSurface(lpDDSAttachedSurface);
}


STDMETHODIMP CAggDrawSurface::AddOverlayDirtyRect(LPRECT lpRect)
{
    ASSERT(m_pDirectDrawSurface);
    return m_pDirectDrawSurface->AddOverlayDirtyRect(lpRect);
}


STDMETHODIMP CAggDrawSurface::Blt(LPRECT lpDestRect,LPDIRECTDRAWSURFACE lpDDSrcSurface,LPRECT lpSrcRect,DWORD dwFlags,LPDDBLTFX lpDDBltFx)
{
    ASSERT(m_pDirectDrawSurface);
    return m_pDirectDrawSurface->Blt(lpDestRect,lpDDSrcSurface,lpSrcRect,dwFlags,lpDDBltFx);
}


STDMETHODIMP CAggDrawSurface::BltBatch(LPDDBLTBATCH lpDDBltBatch,DWORD dwCount,DWORD dwFlags)
{
    ASSERT(m_pDirectDrawSurface);
    return m_pDirectDrawSurface->BltBatch(lpDDBltBatch,dwCount,dwFlags);
}


STDMETHODIMP CAggDrawSurface::BltFast(DWORD dwX,DWORD dwY,LPDIRECTDRAWSURFACE lpDDSrcSurface,LPRECT lpSrcRect,DWORD dwTrans)
{
    ASSERT(m_pDirectDrawSurface);
    return m_pDirectDrawSurface->BltFast(dwX,dwY,lpDDSrcSurface,lpSrcRect,dwTrans);
}


STDMETHODIMP CAggDrawSurface::DeleteAttachedSurface(DWORD dwFlags,LPDIRECTDRAWSURFACE lpDDSAttachedSurface)
{
    ASSERT(m_pDirectDrawSurface);
    return m_pDirectDrawSurface->DeleteAttachedSurface(dwFlags,lpDDSAttachedSurface);
}


STDMETHODIMP CAggDrawSurface::EnumAttachedSurfaces(LPVOID lpContext,LPDDENUMSURFACESCALLBACK lpEnumSurfacesCallback)
{
    ASSERT(m_pDirectDrawSurface);
    return m_pDirectDrawSurface->EnumAttachedSurfaces(lpContext,lpEnumSurfacesCallback);
}


STDMETHODIMP CAggDrawSurface::EnumOverlayZOrders(DWORD dwFlags,LPVOID lpContext,LPDDENUMSURFACESCALLBACK lpfnCallback)
{
    ASSERT(m_pDirectDrawSurface);
    return m_pDirectDrawSurface->EnumOverlayZOrders(dwFlags,lpContext,lpfnCallback);
}


STDMETHODIMP CAggDrawSurface::Flip(LPDIRECTDRAWSURFACE lpDDSurfaceTargetOverride,DWORD dwFlags)
{
    ASSERT(m_pDirectDrawSurface);
    return m_pDirectDrawSurface->Flip(lpDDSurfaceTargetOverride,dwFlags);
}


STDMETHODIMP CAggDrawSurface::GetAttachedSurface(LPDDSCAPS lpDDSCaps,LPDIRECTDRAWSURFACE *lplpDDAttachedSurface)
{
    ASSERT(m_pDirectDrawSurface);
    return m_pDirectDrawSurface->GetAttachedSurface(lpDDSCaps,lplpDDAttachedSurface);
}


STDMETHODIMP CAggDrawSurface::GetBltStatus(DWORD dwFlags)
{
    ASSERT(m_pDirectDrawSurface);
    return m_pDirectDrawSurface->GetBltStatus(dwFlags);
}