forked from LeenkxTeam/LNXSDK
2090 lines
67 KiB
C++
2090 lines
67 KiB
C++
//------------------------------------------------------------------------------
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// File: WinCtrl.cpp
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//
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// Desc: DirectShow base classes - implements video control interface class.
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//
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// Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------------------------
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#undef NOMINMAX
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#include <streams.h>
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#include <intsafe.h>
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#include <checkbmi.h>
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#ifndef max
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#define max(a, b) (((a) > (b)) ? (a) : (b))
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#endif
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#ifndef min
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#define min(a, b) (((a) < (b)) ? (a) : (b))
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#endif
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// The control interface methods require us to be connected
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#define CheckConnected(pin,code) \
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{ \
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if (pin == NULL) { \
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ASSERT(!TEXT("Pin not set")); \
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} else if (pin->IsConnected() == FALSE) { \
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return (code); \
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} \
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}
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// This checks to see whether the window has a drain. An application can in
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// most environments set the owner/parent of windows so that they appear in
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// a compound document context (for example). In this case, the application
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// would probably like to be told of any keyboard/mouse messages. Therefore
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// we pass these messages on untranslated, returning TRUE if we're successful
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BOOL WINAPI PossiblyEatMessage(HWND hwndDrain, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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if (hwndDrain != NULL && !InSendMessage())
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{
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switch (uMsg)
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{
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case WM_CHAR:
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case WM_DEADCHAR:
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case WM_KEYDOWN:
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case WM_KEYUP:
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case WM_LBUTTONDBLCLK:
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case WM_LBUTTONDOWN:
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case WM_LBUTTONUP:
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case WM_MBUTTONDBLCLK:
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case WM_MBUTTONDOWN:
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case WM_MBUTTONUP:
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case WM_MOUSEACTIVATE:
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case WM_MOUSEMOVE:
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// If we pass this on we don't get any mouse clicks
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//case WM_NCHITTEST:
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case WM_NCLBUTTONDBLCLK:
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case WM_NCLBUTTONDOWN:
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case WM_NCLBUTTONUP:
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case WM_NCMBUTTONDBLCLK:
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case WM_NCMBUTTONDOWN:
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case WM_NCMBUTTONUP:
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case WM_NCMOUSEMOVE:
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case WM_NCRBUTTONDBLCLK:
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case WM_NCRBUTTONDOWN:
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case WM_NCRBUTTONUP:
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case WM_RBUTTONDBLCLK:
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case WM_RBUTTONDOWN:
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case WM_RBUTTONUP:
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case WM_SYSCHAR:
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case WM_SYSDEADCHAR:
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case WM_SYSKEYDOWN:
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case WM_SYSKEYUP:
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DbgLog((LOG_TRACE, 2, TEXT("Forwarding %x to drain")));
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PostMessage(hwndDrain, uMsg, wParam, lParam);
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return TRUE;
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}
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}
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return FALSE;
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}
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// This class implements the IVideoWindow control functions (dual interface)
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// we support a large number of properties and methods designed to allow the
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// client (whether it be an automation controller or a C/C++ application) to
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// set and get a number of window related properties such as it's position.
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// We also support some methods that duplicate the properties but provide a
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// more direct and efficient mechanism as many values may be changed in one
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CBaseControlWindow::CBaseControlWindow(
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__inout CBaseFilter *pFilter, // Owning filter
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__in CCritSec *pInterfaceLock, // Locking object
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__in_opt LPCTSTR pName, // Object description
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__inout_opt LPUNKNOWN pUnk, // Normal COM ownership
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__inout HRESULT *phr) : // OLE return code
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CBaseVideoWindow(pName,pUnk),
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m_pInterfaceLock(pInterfaceLock),
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m_hwndOwner(NULL),
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m_hwndDrain(NULL),
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m_bAutoShow(TRUE),
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m_pFilter(pFilter),
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m_bCursorHidden(FALSE),
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m_pPin(NULL)
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{
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ASSERT(m_pFilter);
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ASSERT(m_pInterfaceLock);
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ASSERT(phr);
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m_BorderColour = VIDEO_COLOUR;
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}
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// Set the title caption on the base window, we don't do any field checking
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// as we really don't care what title they intend to have. We can always get
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// it back again later with GetWindowText. The only other complication is to
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// do the necessary string conversions between ANSI and OLE Unicode strings
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STDMETHODIMP CBaseControlWindow::put_Caption(__in BSTR strCaption)
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{
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CheckPointer((PVOID)strCaption,E_POINTER);
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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#ifdef UNICODE
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SetWindowText(m_hwnd, strCaption);
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#else
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CHAR Caption[CAPTION];
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WideCharToMultiByte(CP_ACP,0,strCaption,-1,Caption,CAPTION,NULL,NULL);
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SetWindowText(m_hwnd, Caption);
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#endif
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return NOERROR;
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}
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// Get the current base window title caption, once again we do no real field
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// checking. We allocate a string for the window title to be filled in with
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// which ensures the interface doesn't fiddle around with getting memory. A
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// BSTR is a normal C string with the length at position (-1), we use the
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// WriteBSTR helper function to create the caption to try and avoid OLE32
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STDMETHODIMP CBaseControlWindow::get_Caption(__out BSTR *pstrCaption)
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{
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CheckPointer(pstrCaption,E_POINTER);
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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WCHAR WideCaption[CAPTION];
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#ifdef UNICODE
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GetWindowText(m_hwnd,WideCaption,CAPTION);
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#else
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// Convert the ASCII caption to a UNICODE string
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TCHAR Caption[CAPTION];
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GetWindowText(m_hwnd,Caption,CAPTION);
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MultiByteToWideChar(CP_ACP,0,Caption,-1,WideCaption,CAPTION);
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#endif
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return WriteBSTR(pstrCaption,WideCaption);
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}
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// Set the window style using GWL_EXSTYLE
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STDMETHODIMP CBaseControlWindow::put_WindowStyleEx(long WindowStyleEx)
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{
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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// Should we be taking off WS_EX_TOPMOST
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if (GetWindowLong(m_hwnd,GWL_EXSTYLE) & WS_EX_TOPMOST) {
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if ((WindowStyleEx & WS_EX_TOPMOST) == 0) {
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SendMessage(m_hwnd,m_ShowStageTop,(WPARAM) FALSE,(LPARAM) 0);
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}
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}
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// Likewise should we be adding WS_EX_TOPMOST
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if (WindowStyleEx & WS_EX_TOPMOST) {
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SendMessage(m_hwnd,m_ShowStageTop,(WPARAM) TRUE,(LPARAM) 0);
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WindowStyleEx &= (~WS_EX_TOPMOST);
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if (WindowStyleEx == 0) return NOERROR;
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}
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return DoSetWindowStyle(WindowStyleEx,GWL_EXSTYLE);
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}
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// Gets the current GWL_EXSTYLE base window style
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STDMETHODIMP CBaseControlWindow::get_WindowStyleEx(__out long *pWindowStyleEx)
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{
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CheckPointer(pWindowStyleEx,E_POINTER);
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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return DoGetWindowStyle(pWindowStyleEx,GWL_EXSTYLE);
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}
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// Set the window style using GWL_STYLE
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STDMETHODIMP CBaseControlWindow::put_WindowStyle(long WindowStyle)
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{
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// These styles cannot be changed dynamically
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if ((WindowStyle & WS_DISABLED) ||
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(WindowStyle & WS_ICONIC) ||
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(WindowStyle & WS_MAXIMIZE) ||
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(WindowStyle & WS_MINIMIZE) ||
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(WindowStyle & WS_HSCROLL) ||
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(WindowStyle & WS_VSCROLL)) {
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return E_INVALIDARG;
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}
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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return DoSetWindowStyle(WindowStyle,GWL_STYLE);
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}
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// Get the current GWL_STYLE base window style
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STDMETHODIMP CBaseControlWindow::get_WindowStyle(__out long *pWindowStyle)
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{
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CheckPointer(pWindowStyle,E_POINTER);
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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return DoGetWindowStyle(pWindowStyle,GWL_STYLE);
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}
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// Change the base window style or the extended styles depending on whether
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// WindowLong is GWL_STYLE or GWL_EXSTYLE. We must call SetWindowPos to have
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// the window displayed in it's new style after the change which is a little
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// tricky if the window is not currently visible as we realise it offscreen.
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// In most cases the client will call get_WindowStyle before they call this
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// and then AND and OR in extra bit settings according to the requirements
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HRESULT CBaseControlWindow::DoSetWindowStyle(long Style,long WindowLong)
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{
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RECT WindowRect;
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// Get the window's visibility before setting the style
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BOOL bVisible = IsWindowVisible(m_hwnd);
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EXECUTE_ASSERT(GetWindowRect(m_hwnd,&WindowRect));
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// Set the new style flags for the window
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SetWindowLong(m_hwnd,WindowLong,Style);
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UINT WindowFlags = SWP_SHOWWINDOW | SWP_FRAMECHANGED | SWP_NOACTIVATE;
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WindowFlags |= SWP_NOZORDER | SWP_NOSIZE | SWP_NOMOVE;
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// Show the window again in the current position
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if (bVisible == TRUE) {
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SetWindowPos(m_hwnd, // Base window handle
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HWND_TOP, // Just a place holder
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0,0,0,0, // Leave size and position
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WindowFlags); // Just draw it again
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return NOERROR;
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}
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// Move the window offscreen so the user doesn't see the changes
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MoveWindow((HWND) m_hwnd, // Base window handle
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GetSystemMetrics(SM_CXSCREEN), // Current desktop width
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GetSystemMetrics(SM_CYSCREEN), // Likewise it's height
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WIDTH(&WindowRect), // Use the same width
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HEIGHT(&WindowRect), // Keep height same to
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TRUE); // May as well repaint
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// Now show the previously hidden window
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SetWindowPos(m_hwnd, // Base window handle
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HWND_TOP, // Just a place holder
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0,0,0,0, // Leave size and position
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WindowFlags); // Just draw it again
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ShowWindow(m_hwnd,SW_HIDE);
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if (GetParent(m_hwnd)) {
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MapWindowPoints(HWND_DESKTOP, GetParent(m_hwnd), (LPPOINT)&WindowRect, 2);
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}
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MoveWindow((HWND) m_hwnd, // Base window handle
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WindowRect.left, // Existing x coordinate
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WindowRect.top, // Existing y coordinate
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WIDTH(&WindowRect), // Use the same width
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HEIGHT(&WindowRect), // Keep height same to
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TRUE); // May as well repaint
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return NOERROR;
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}
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// Get the current base window style (either GWL_STYLE or GWL_EXSTYLE)
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HRESULT CBaseControlWindow::DoGetWindowStyle(__out long *pStyle,long WindowLong)
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{
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*pStyle = GetWindowLong(m_hwnd,WindowLong);
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return NOERROR;
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}
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// Change the visibility of the base window, this takes the same parameters
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// as the ShowWindow Win32 API does, so the client can have the window hidden
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// or shown, minimised to an icon, or maximised to play in full screen mode
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// We pass the request on to the base window to actually make the change
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STDMETHODIMP CBaseControlWindow::put_WindowState(long WindowState)
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{
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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DoShowWindow(WindowState);
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return NOERROR;
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}
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// Get the current window state, this function returns a subset of the SW bit
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// settings available in ShowWindow, if the window is visible then SW_SHOW is
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// set, if it is hidden then the SW_HIDDEN is set, if it is either minimised
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// or maximised then the SW_MINIMIZE or SW_MAXIMIZE is set respectively. The
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// other SW bit settings are really set commands not readable output values
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STDMETHODIMP CBaseControlWindow::get_WindowState(__out long *pWindowState)
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{
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CheckPointer(pWindowState,E_POINTER);
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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ASSERT(pWindowState);
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*pWindowState = FALSE;
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// Is the window visible, a window is termed visible if it is somewhere on
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// the current desktop even if it is completely obscured by other windows
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// so the flag is a style for each window set with the WS_VISIBLE bit
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if (IsWindowVisible(m_hwnd) == TRUE) {
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// Is the base window iconic
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if (IsIconic(m_hwnd) == TRUE) {
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*pWindowState |= SW_MINIMIZE;
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}
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// Has the window been maximised
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else if (IsZoomed(m_hwnd) == TRUE) {
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*pWindowState |= SW_MAXIMIZE;
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}
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// Window is normal
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else {
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*pWindowState |= SW_SHOW;
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}
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} else {
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*pWindowState |= SW_HIDE;
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}
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return NOERROR;
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}
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// This makes sure that any palette we realise in the base window (through a
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// media type or through the overlay interface) is done in the background and
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// is therefore mapped to existing device entries rather than taking it over
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// as it will do when we this window gets the keyboard focus. An application
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// uses this to make sure it doesn't have it's palette removed by the window
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STDMETHODIMP CBaseControlWindow::put_BackgroundPalette(long BackgroundPalette)
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{
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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CAutoLock cWindowLock(&m_WindowLock);
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// Check this is a valid automation boolean type
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if (BackgroundPalette != OATRUE) {
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if (BackgroundPalette != OAFALSE) {
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return E_INVALIDARG;
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}
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}
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// Make sure the window realises any palette it has again
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m_bBackground = (BackgroundPalette == OATRUE ? TRUE : FALSE);
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PostMessage(m_hwnd,m_RealizePalette,0,0);
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PaintWindow(FALSE);
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return NOERROR;
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}
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// This returns the current background realisation setting
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STDMETHODIMP
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CBaseControlWindow::get_BackgroundPalette(__out long *pBackgroundPalette)
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{
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CheckPointer(pBackgroundPalette,E_POINTER);
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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CAutoLock cWindowLock(&m_WindowLock);
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// Get the current background palette setting
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*pBackgroundPalette = (m_bBackground == TRUE ? OATRUE : OAFALSE);
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return NOERROR;
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}
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// Change the visibility of the base window
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STDMETHODIMP CBaseControlWindow::put_Visible(long Visible)
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{
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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// Check this is a valid automation boolean type
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if (Visible != OATRUE) {
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if (Visible != OAFALSE) {
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return E_INVALIDARG;
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}
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}
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// Convert the boolean visibility into SW_SHOW and SW_HIDE
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INT Mode = (Visible == OATRUE ? SW_SHOWNORMAL : SW_HIDE);
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DoShowWindow(Mode);
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return NOERROR;
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}
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// Return OATRUE if the window is currently visible otherwise OAFALSE
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STDMETHODIMP CBaseControlWindow::get_Visible(__out long *pVisible)
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{
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CheckPointer(pVisible,E_POINTER);
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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// See if the base window has a WS_VISIBLE style - this will return TRUE
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// even if the window is completely obscured by other desktop windows, we
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// return FALSE if the window is not showing because of earlier calls
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BOOL Mode = IsWindowVisible(m_hwnd);
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*pVisible = (Mode == TRUE ? OATRUE : OAFALSE);
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return NOERROR;
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}
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// Change the left position of the base window. This keeps the window width
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// and height properties the same so it effectively shunts the window left or
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// right accordingly - there is the Width property to change that dimension
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STDMETHODIMP CBaseControlWindow::put_Left(long Left)
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{
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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BOOL bSuccess;
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RECT WindowRect;
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// Get the current window position in a RECT
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EXECUTE_ASSERT(GetWindowRect(m_hwnd,&WindowRect));
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if (GetParent(m_hwnd)) {
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MapWindowPoints(HWND_DESKTOP, GetParent(m_hwnd), (LPPOINT)&WindowRect, 2);
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}
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// Adjust the coordinates ready for SetWindowPos, the window rectangle we
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// get back from GetWindowRect is in left,top,right and bottom while the
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// coordinates SetWindowPos wants are left,top,width and height values
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WindowRect.bottom = WindowRect.bottom - WindowRect.top;
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WindowRect.right = WindowRect.right - WindowRect.left;
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UINT WindowFlags = SWP_NOZORDER | SWP_FRAMECHANGED | SWP_NOACTIVATE;
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bSuccess = SetWindowPos(m_hwnd, // Window handle
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HWND_TOP, // Put it at the top
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Left, // New left position
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WindowRect.top, // Leave top alone
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WindowRect.right, // The WIDTH (not right)
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WindowRect.bottom, // The HEIGHT (not bottom)
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WindowFlags); // Show window options
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if (bSuccess == FALSE) {
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return E_INVALIDARG;
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}
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return NOERROR;
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}
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// Return the current base window left position
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STDMETHODIMP CBaseControlWindow::get_Left(__out long *pLeft)
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{
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CheckPointer(pLeft,E_POINTER);
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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RECT WindowRect;
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EXECUTE_ASSERT(GetWindowRect(m_hwnd,&WindowRect));
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*pLeft = WindowRect.left;
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return NOERROR;
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}
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// Change the current width of the base window. This property complements the
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// left position property so we must keep the left edge constant and expand or
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// contract to the right, the alternative would be to change the left edge so
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// keeping the right edge constant but this is maybe a little more intuitive
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STDMETHODIMP CBaseControlWindow::put_Width(long Width)
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{
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CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
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BOOL bSuccess;
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RECT WindowRect;
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// Adjust the coordinates ready for SetWindowPos, the window rectangle we
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// get back from GetWindowRect is in left,top,right and bottom while the
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// coordinates SetWindowPos wants are left,top,width and height values
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EXECUTE_ASSERT(GetWindowRect(m_hwnd,&WindowRect));
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if (GetParent(m_hwnd)) {
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|
|
|
MapWindowPoints(HWND_DESKTOP, GetParent(m_hwnd), (LPPOINT)&WindowRect, 2);
|
|
}
|
|
|
|
WindowRect.bottom = WindowRect.bottom - WindowRect.top;
|
|
UINT WindowFlags = SWP_NOZORDER | SWP_FRAMECHANGED | SWP_NOACTIVATE;
|
|
|
|
// This seems to have a bug in that calling SetWindowPos on a window with
|
|
// just the width changing causes it to ignore the width that you pass in
|
|
// and sets it to a mimimum value of 110 pixels wide (Windows NT 3.51)
|
|
|
|
bSuccess = SetWindowPos(m_hwnd, // Window handle
|
|
HWND_TOP, // Put it at the top
|
|
WindowRect.left, // Leave left alone
|
|
WindowRect.top, // Leave top alone
|
|
Width, // New WIDTH dimension
|
|
WindowRect.bottom, // The HEIGHT (not bottom)
|
|
WindowFlags); // Show window options
|
|
|
|
if (bSuccess == FALSE) {
|
|
return E_INVALIDARG;
|
|
}
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Return the current base window width
|
|
|
|
STDMETHODIMP CBaseControlWindow::get_Width(__out long *pWidth)
|
|
{
|
|
CheckPointer(pWidth,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
RECT WindowRect;
|
|
|
|
EXECUTE_ASSERT(GetWindowRect(m_hwnd,&WindowRect));
|
|
*pWidth = WindowRect.right - WindowRect.left;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This allows the client program to change the top position for the window in
|
|
// the same way that changing the left position does not affect the width of
|
|
// the image so changing the top position does not affect the window height
|
|
|
|
STDMETHODIMP CBaseControlWindow::put_Top(long Top)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
BOOL bSuccess;
|
|
RECT WindowRect;
|
|
|
|
// Get the current window position in a RECT
|
|
EXECUTE_ASSERT(GetWindowRect(m_hwnd,&WindowRect));
|
|
|
|
if (GetParent(m_hwnd)) {
|
|
|
|
MapWindowPoints(HWND_DESKTOP, GetParent(m_hwnd), (LPPOINT)&WindowRect, 2);
|
|
}
|
|
|
|
// Adjust the coordinates ready for SetWindowPos, the window rectangle we
|
|
// get back from GetWindowRect is in left,top,right and bottom while the
|
|
// coordinates SetWindowPos wants are left,top,width and height values
|
|
|
|
WindowRect.bottom = WindowRect.bottom - WindowRect.top;
|
|
WindowRect.right = WindowRect.right - WindowRect.left;
|
|
UINT WindowFlags = SWP_NOZORDER | SWP_FRAMECHANGED | SWP_NOACTIVATE;
|
|
|
|
bSuccess = SetWindowPos(m_hwnd, // Window handle
|
|
HWND_TOP, // Put it at the top
|
|
WindowRect.left, // Leave left alone
|
|
Top, // New top position
|
|
WindowRect.right, // The WIDTH (not right)
|
|
WindowRect.bottom, // The HEIGHT (not bottom)
|
|
WindowFlags); // Show window flags
|
|
|
|
if (bSuccess == FALSE) {
|
|
return E_INVALIDARG;
|
|
}
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Return the current base window top position
|
|
|
|
STDMETHODIMP CBaseControlWindow::get_Top(long *pTop)
|
|
{
|
|
CheckPointer(pTop,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
RECT WindowRect;
|
|
|
|
EXECUTE_ASSERT(GetWindowRect(m_hwnd,&WindowRect));
|
|
*pTop = WindowRect.top;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Change the height of the window, this complements the top property so when
|
|
// we change this we must keep the top position for the base window, as said
|
|
// before we could keep the bottom and grow upwards although this is perhaps
|
|
// a little more intuitive since we already have a top position property
|
|
|
|
STDMETHODIMP CBaseControlWindow::put_Height(long Height)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
BOOL bSuccess;
|
|
RECT WindowRect;
|
|
|
|
// Adjust the coordinates ready for SetWindowPos, the window rectangle we
|
|
// get back from GetWindowRect is in left,top,right and bottom while the
|
|
// coordinates SetWindowPos wants are left,top,width and height values
|
|
|
|
EXECUTE_ASSERT(GetWindowRect(m_hwnd,&WindowRect));
|
|
|
|
if (GetParent(m_hwnd)) {
|
|
|
|
MapWindowPoints(HWND_DESKTOP, GetParent(m_hwnd), (LPPOINT)&WindowRect, 2);
|
|
}
|
|
|
|
WindowRect.right = WindowRect.right - WindowRect.left;
|
|
UINT WindowFlags = SWP_NOZORDER | SWP_FRAMECHANGED | SWP_NOACTIVATE;
|
|
|
|
bSuccess = SetWindowPos(m_hwnd, // Window handle
|
|
HWND_TOP, // Put it at the top
|
|
WindowRect.left, // Leave left alone
|
|
WindowRect.top, // Leave top alone
|
|
WindowRect.right, // The WIDTH (not right)
|
|
Height, // New height dimension
|
|
WindowFlags); // Show window flags
|
|
|
|
if (bSuccess == FALSE) {
|
|
return E_INVALIDARG;
|
|
}
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Return the current base window height
|
|
|
|
STDMETHODIMP CBaseControlWindow::get_Height(__out long *pHeight)
|
|
{
|
|
CheckPointer(pHeight,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
RECT WindowRect;
|
|
|
|
EXECUTE_ASSERT(GetWindowRect(m_hwnd,&WindowRect));
|
|
*pHeight = WindowRect.bottom - WindowRect.top;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This can be called to change the owning window. Setting the owner is done
|
|
// through this function, however to make the window a true child window the
|
|
// style must also be set to WS_CHILD. After resetting the owner to NULL an
|
|
// application should also set the style to WS_OVERLAPPED | WS_CLIPCHILDREN.
|
|
|
|
// We cannot lock the object here because the SetParent causes an interthread
|
|
// SendMessage to the owner window. If they are in GetState we will sit here
|
|
// incomplete with the critical section locked therefore blocking out source
|
|
// filter threads from accessing us. Because the source thread can't enter us
|
|
// it can't get buffers or call EndOfStream so the GetState will not complete
|
|
|
|
STDMETHODIMP CBaseControlWindow::put_Owner(OAHWND Owner)
|
|
{
|
|
// Check we are connected otherwise reject the call
|
|
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
m_hwndOwner = (HWND) Owner;
|
|
HWND hwndParent = m_hwndOwner;
|
|
|
|
// Add or remove WS_CHILD as appropriate
|
|
|
|
LONG Style = GetWindowLong(m_hwnd,GWL_STYLE);
|
|
if (Owner == NULL) {
|
|
Style &= (~WS_CHILD);
|
|
} else {
|
|
Style |= (WS_CHILD);
|
|
}
|
|
SetWindowLong(m_hwnd,GWL_STYLE,Style);
|
|
|
|
// Don't call this with the filter locked
|
|
|
|
SetParent(m_hwnd,hwndParent);
|
|
|
|
PaintWindow(TRUE);
|
|
NOTE1("Changed parent %lx",hwndParent);
|
|
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This complements the put_Owner to get the current owning window property
|
|
// we always return NOERROR although the returned window handle may be NULL
|
|
// to indicate no owning window (the desktop window doesn't qualify as one)
|
|
// If an application sets the owner we call SetParent, however that returns
|
|
// NULL until the WS_CHILD bit is set on, so we store the owner internally
|
|
|
|
STDMETHODIMP CBaseControlWindow::get_Owner(__out OAHWND *Owner)
|
|
{
|
|
CheckPointer(Owner,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
*Owner = (OAHWND) m_hwndOwner;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// And renderer supporting IVideoWindow may have an HWND set who will get any
|
|
// keyboard and mouse messages we receive posted on to them. This is separate
|
|
// from setting an owning window. By separating the two, applications may get
|
|
// messages sent on even when they have set no owner (perhaps it's maximised)
|
|
|
|
STDMETHODIMP CBaseControlWindow::put_MessageDrain(OAHWND Drain)
|
|
{
|
|
// Check we are connected otherwise reject the call
|
|
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
m_hwndDrain = (HWND) Drain;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Return the current message drain
|
|
|
|
STDMETHODIMP CBaseControlWindow::get_MessageDrain(__out OAHWND *Drain)
|
|
{
|
|
CheckPointer(Drain,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
*Drain = (OAHWND) m_hwndDrain;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This is called by the filter graph to inform us of a message we should know
|
|
// is being sent to our owning window. We have this because as a child window
|
|
// we do not get certain messages that are only sent to top level windows. We
|
|
// must see the palette changed/changing/query messages so that we know if we
|
|
// have the foreground palette or not. We pass the message on to our window
|
|
// using SendMessage - this will cause an interthread send message to occur
|
|
|
|
STDMETHODIMP
|
|
CBaseControlWindow::NotifyOwnerMessage(OAHWND hwnd, // Window handle
|
|
long uMsg, // Message ID
|
|
LONG_PTR wParam, // Parameters
|
|
LONG_PTR lParam) // for message
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
|
|
// Only interested in these Windows messages
|
|
|
|
switch (uMsg) {
|
|
|
|
case WM_SYSCOLORCHANGE:
|
|
case WM_PALETTECHANGED:
|
|
case WM_PALETTEISCHANGING:
|
|
case WM_QUERYNEWPALETTE:
|
|
case WM_DEVMODECHANGE:
|
|
case WM_DISPLAYCHANGE:
|
|
case WM_ACTIVATEAPP:
|
|
|
|
// If we do not have an owner then ignore
|
|
|
|
if (m_hwndOwner == NULL) {
|
|
return NOERROR;
|
|
}
|
|
SendMessage(m_hwnd,uMsg,(WPARAM)wParam,(LPARAM)lParam);
|
|
break;
|
|
|
|
// do NOT fwd WM_MOVE. the parameters are the location of the parent
|
|
// window, NOT what the renderer should be looking at. But we need
|
|
// to make sure the overlay is moved with the parent window, so we
|
|
// do this.
|
|
case WM_MOVE:
|
|
PostMessage(m_hwnd,WM_PAINT,0,0);
|
|
break;
|
|
}
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Allow an application to have us set the base window in the foreground. We
|
|
// have this because it is difficult for one thread to do do this to a window
|
|
// owned by another thread. We ask the base window class to do the real work
|
|
|
|
STDMETHODIMP CBaseControlWindow::SetWindowForeground(long Focus)
|
|
{
|
|
// Check this is a valid automation boolean type
|
|
|
|
if (Focus != OATRUE) {
|
|
if (Focus != OAFALSE) {
|
|
return E_INVALIDARG;
|
|
}
|
|
}
|
|
|
|
// We shouldn't lock as this sends a message
|
|
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
BOOL bFocus = (Focus == OATRUE ? TRUE : FALSE);
|
|
DoSetWindowForeground(bFocus);
|
|
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This allows a client to set the complete window size and position in one
|
|
// atomic operation. The same affect can be had by changing each dimension
|
|
// in turn through their individual properties although some flashing will
|
|
// occur as each of them gets updated (they are better set at design time)
|
|
|
|
STDMETHODIMP
|
|
CBaseControlWindow::SetWindowPosition(long Left,long Top,long Width,long Height)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
BOOL bSuccess;
|
|
|
|
// Set the new size and position
|
|
UINT WindowFlags = SWP_NOZORDER | SWP_FRAMECHANGED | SWP_NOACTIVATE;
|
|
|
|
ASSERT(IsWindow(m_hwnd));
|
|
bSuccess = SetWindowPos(m_hwnd, // Window handle
|
|
HWND_TOP, // Put it at the top
|
|
Left, // Left position
|
|
Top, // Top position
|
|
Width, // Window width
|
|
Height, // Window height
|
|
WindowFlags); // Show window flags
|
|
ASSERT(bSuccess);
|
|
#ifdef DEBUG
|
|
DbgLog((LOG_TRACE, 1, TEXT("SWP failed error %d"), GetLastError()));
|
|
#endif
|
|
if (bSuccess == FALSE) {
|
|
return E_INVALIDARG;
|
|
}
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This complements the SetWindowPosition to return the current window place
|
|
// in device coordinates. As before the same information can be retrived by
|
|
// calling the property get functions individually but this is atomic and is
|
|
// therefore more suitable to a live environment rather than design time
|
|
|
|
STDMETHODIMP
|
|
CBaseControlWindow::GetWindowPosition(__out long *pLeft,__out long *pTop,__out long *pWidth,__out long *pHeight)
|
|
{
|
|
// Should check the pointers are not NULL
|
|
|
|
CheckPointer(pLeft,E_POINTER);
|
|
CheckPointer(pTop,E_POINTER);
|
|
CheckPointer(pWidth,E_POINTER);
|
|
CheckPointer(pHeight,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
RECT WindowRect;
|
|
|
|
// Get the current window coordinates
|
|
|
|
EXECUTE_ASSERT(GetWindowRect(m_hwnd,&WindowRect));
|
|
|
|
// Convert the RECT into left,top,width and height values
|
|
|
|
*pLeft = WindowRect.left;
|
|
*pTop = WindowRect.top;
|
|
*pWidth = WindowRect.right - WindowRect.left;
|
|
*pHeight = WindowRect.bottom - WindowRect.top;
|
|
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// When a window is maximised or iconic calling GetWindowPosition will return
|
|
// the current window position (likewise for the properties). However if the
|
|
// restored size (ie the size we'll return to when normally shown) is needed
|
|
// then this should be used. When in a normal position (neither iconic nor
|
|
// maximised) then this returns the same coordinates as GetWindowPosition
|
|
|
|
STDMETHODIMP
|
|
CBaseControlWindow::GetRestorePosition(__out long *pLeft,__out long *pTop,__out long *pWidth,__out long *pHeight)
|
|
{
|
|
// Should check the pointers are not NULL
|
|
|
|
CheckPointer(pLeft,E_POINTER);
|
|
CheckPointer(pTop,E_POINTER);
|
|
CheckPointer(pWidth,E_POINTER);
|
|
CheckPointer(pHeight,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
|
|
// Use GetWindowPlacement to find the restore position
|
|
|
|
WINDOWPLACEMENT Place;
|
|
Place.length = sizeof(WINDOWPLACEMENT);
|
|
EXECUTE_ASSERT(GetWindowPlacement(m_hwnd,&Place));
|
|
|
|
RECT WorkArea;
|
|
|
|
// We must take into account any task bar present
|
|
|
|
if (SystemParametersInfo(SPI_GETWORKAREA,0,&WorkArea,FALSE) == TRUE) {
|
|
if (GetParent(m_hwnd) == NULL) {
|
|
Place.rcNormalPosition.top += WorkArea.top;
|
|
Place.rcNormalPosition.bottom += WorkArea.top;
|
|
Place.rcNormalPosition.left += WorkArea.left;
|
|
Place.rcNormalPosition.right += WorkArea.left;
|
|
}
|
|
}
|
|
|
|
// Convert the RECT into left,top,width and height values
|
|
|
|
*pLeft = Place.rcNormalPosition.left;
|
|
*pTop = Place.rcNormalPosition.top;
|
|
*pWidth = Place.rcNormalPosition.right - Place.rcNormalPosition.left;
|
|
*pHeight = Place.rcNormalPosition.bottom - Place.rcNormalPosition.top;
|
|
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Return the current border colour, if we are playing something to a subset
|
|
// of the base window display there is an outside area exposed. The default
|
|
// action is to paint this colour in the Windows background colour (defined
|
|
// as value COLOR_WINDOW) We reset to this default when we're disconnected
|
|
|
|
STDMETHODIMP CBaseControlWindow::get_BorderColor(__out long *Color)
|
|
{
|
|
CheckPointer(Color,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
*Color = (long) m_BorderColour;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This can be called to set the current border colour
|
|
|
|
STDMETHODIMP CBaseControlWindow::put_BorderColor(long Color)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
|
|
// Have the window repainted with the new border colour
|
|
|
|
m_BorderColour = (COLORREF) Color;
|
|
PaintWindow(TRUE);
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Delegate fullscreen handling to plug in distributor
|
|
|
|
STDMETHODIMP CBaseControlWindow::get_FullScreenMode(__out long *FullScreenMode)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CheckPointer(FullScreenMode,E_POINTER);
|
|
return E_NOTIMPL;
|
|
}
|
|
|
|
|
|
// Delegate fullscreen handling to plug in distributor
|
|
|
|
STDMETHODIMP CBaseControlWindow::put_FullScreenMode(long FullScreenMode)
|
|
{
|
|
return E_NOTIMPL;
|
|
}
|
|
|
|
|
|
// This sets the auto show property, this property causes the base window to
|
|
// be displayed whenever we change state. This allows an application to have
|
|
// to do nothing to have the window appear but still allow them to change the
|
|
// default behaviour if for example they want to keep it hidden for longer
|
|
|
|
STDMETHODIMP CBaseControlWindow::put_AutoShow(long AutoShow)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
|
|
// Check this is a valid automation boolean type
|
|
|
|
if (AutoShow != OATRUE) {
|
|
if (AutoShow != OAFALSE) {
|
|
return E_INVALIDARG;
|
|
}
|
|
}
|
|
|
|
m_bAutoShow = (AutoShow == OATRUE ? TRUE : FALSE);
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This can be called to get the current auto show flag. The flag is updated
|
|
// when we connect and disconnect and through this interface all of which are
|
|
// controlled and serialised by means of the main renderer critical section
|
|
|
|
STDMETHODIMP CBaseControlWindow::get_AutoShow(__out long *AutoShow)
|
|
{
|
|
CheckPointer(AutoShow,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
*AutoShow = (m_bAutoShow == TRUE ? OATRUE : OAFALSE);
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Return the minimum ideal image size for the current video. This may differ
|
|
// to the actual video dimensions because we may be using DirectDraw hardware
|
|
// that has specific stretching requirements. For example the Cirrus Logic
|
|
// cards have a minimum stretch factor depending on the overlay surface size
|
|
|
|
STDMETHODIMP
|
|
CBaseControlWindow::GetMinIdealImageSize(__out long *pWidth,__out long *pHeight)
|
|
{
|
|
CheckPointer(pWidth,E_POINTER);
|
|
CheckPointer(pHeight,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
FILTER_STATE State;
|
|
|
|
// Must not be stopped for this to work correctly
|
|
|
|
m_pFilter->GetState(0,&State);
|
|
if (State == State_Stopped) {
|
|
return VFW_E_WRONG_STATE;
|
|
}
|
|
|
|
RECT DefaultRect = GetDefaultRect();
|
|
*pWidth = WIDTH(&DefaultRect);
|
|
*pHeight = HEIGHT(&DefaultRect);
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Return the maximum ideal image size for the current video. This may differ
|
|
// to the actual video dimensions because we may be using DirectDraw hardware
|
|
// that has specific stretching requirements. For example the Cirrus Logic
|
|
// cards have a maximum stretch factor depending on the overlay surface size
|
|
|
|
STDMETHODIMP
|
|
CBaseControlWindow::GetMaxIdealImageSize(__out long *pWidth,__out long *pHeight)
|
|
{
|
|
CheckPointer(pWidth,E_POINTER);
|
|
CheckPointer(pHeight,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
FILTER_STATE State;
|
|
|
|
// Must not be stopped for this to work correctly
|
|
|
|
m_pFilter->GetState(0,&State);
|
|
if (State == State_Stopped) {
|
|
return VFW_E_WRONG_STATE;
|
|
}
|
|
|
|
RECT DefaultRect = GetDefaultRect();
|
|
*pWidth = WIDTH(&DefaultRect);
|
|
*pHeight = HEIGHT(&DefaultRect);
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Allow an application to hide the cursor on our window
|
|
|
|
STDMETHODIMP
|
|
CBaseControlWindow::HideCursor(long HideCursor)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
|
|
// Check this is a valid automation boolean type
|
|
|
|
if (HideCursor != OATRUE) {
|
|
if (HideCursor != OAFALSE) {
|
|
return E_INVALIDARG;
|
|
}
|
|
}
|
|
|
|
m_bCursorHidden = (HideCursor == OATRUE ? TRUE : FALSE);
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Returns whether we have the cursor hidden or not
|
|
|
|
STDMETHODIMP CBaseControlWindow::IsCursorHidden(__out long *CursorHidden)
|
|
{
|
|
CheckPointer(CursorHidden,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
*CursorHidden = (m_bCursorHidden == TRUE ? OATRUE : OAFALSE);
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This class implements the IBasicVideo control functions (dual interface)
|
|
// we support a large number of properties and methods designed to allow the
|
|
// client (whether it be an automation controller or a C/C++ application) to
|
|
// set and get a number of video related properties such as the native video
|
|
// size. We support some methods that duplicate the properties but provide a
|
|
// more direct and efficient mechanism as many values may be changed in one
|
|
|
|
CBaseControlVideo::CBaseControlVideo(
|
|
__inout CBaseFilter *pFilter, // Owning filter
|
|
__in CCritSec *pInterfaceLock, // Locking object
|
|
__in_opt LPCTSTR pName, // Object description
|
|
__inout_opt LPUNKNOWN pUnk, // Normal COM ownership
|
|
__inout HRESULT *phr) : // OLE return code
|
|
|
|
CBaseBasicVideo(pName,pUnk),
|
|
m_pFilter(pFilter),
|
|
m_pInterfaceLock(pInterfaceLock),
|
|
m_pPin(NULL)
|
|
{
|
|
ASSERT(m_pFilter);
|
|
ASSERT(m_pInterfaceLock);
|
|
ASSERT(phr);
|
|
}
|
|
|
|
// Return an approximate average time per frame
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_AvgTimePerFrame(__out REFTIME *pAvgTimePerFrame)
|
|
{
|
|
CheckPointer(pAvgTimePerFrame,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
|
|
VIDEOINFOHEADER *pVideoInfo = GetVideoFormat();
|
|
if (pVideoInfo == NULL)
|
|
return E_OUTOFMEMORY;
|
|
COARefTime AvgTime(pVideoInfo->AvgTimePerFrame);
|
|
*pAvgTimePerFrame = (REFTIME) AvgTime;
|
|
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Return an approximate bit rate for the video
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_BitRate(__out long *pBitRate)
|
|
{
|
|
CheckPointer(pBitRate,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
|
|
VIDEOINFOHEADER *pVideoInfo = GetVideoFormat();
|
|
if (pVideoInfo == NULL)
|
|
return E_OUTOFMEMORY;
|
|
*pBitRate = pVideoInfo->dwBitRate;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Return an approximate bit error rate
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_BitErrorRate(__out long *pBitErrorRate)
|
|
{
|
|
CheckPointer(pBitErrorRate,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
|
|
VIDEOINFOHEADER *pVideoInfo = GetVideoFormat();
|
|
if (pVideoInfo == NULL)
|
|
return E_OUTOFMEMORY;
|
|
*pBitErrorRate = pVideoInfo->dwBitErrorRate;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This returns the current video width
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_VideoWidth(__out long *pVideoWidth)
|
|
{
|
|
CheckPointer(pVideoWidth,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
|
|
VIDEOINFOHEADER *pVideoInfo = GetVideoFormat();
|
|
if (pVideoInfo == NULL)
|
|
return E_OUTOFMEMORY;
|
|
*pVideoWidth = pVideoInfo->bmiHeader.biWidth;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This returns the current video height
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_VideoHeight(__out long *pVideoHeight)
|
|
{
|
|
CheckPointer(pVideoHeight,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
|
|
VIDEOINFOHEADER *pVideoInfo = GetVideoFormat();
|
|
if (pVideoInfo == NULL)
|
|
return E_OUTOFMEMORY;
|
|
*pVideoHeight = pVideoInfo->bmiHeader.biHeight;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This returns the current palette the video is using as an array allocated
|
|
// by the user. To remain consistent we use PALETTEENTRY fields to return the
|
|
// colours in rather than RGBQUADs that multimedia decided to use. The memory
|
|
// is allocated by the user so we simple copy each in turn. We check that the
|
|
// number of entries requested and the start position offset are both valid
|
|
// If the number of entries evaluates to zero then we return an S_FALSE code
|
|
|
|
STDMETHODIMP CBaseControlVideo::GetVideoPaletteEntries(long StartIndex,
|
|
long Entries,
|
|
__out long *pRetrieved,
|
|
__out_ecount_part(Entries, *pRetrieved) long *pPalette)
|
|
{
|
|
CheckPointer(pRetrieved,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
CMediaType MediaType;
|
|
|
|
// Get the video format from the derived class
|
|
|
|
VIDEOINFOHEADER *pVideoInfo = GetVideoFormat();
|
|
if (pVideoInfo == NULL)
|
|
return E_OUTOFMEMORY;
|
|
BITMAPINFOHEADER *pHeader = HEADER(pVideoInfo);
|
|
|
|
// Is the current format palettised
|
|
|
|
if (PALETTISED(pVideoInfo) == FALSE) {
|
|
*pRetrieved = 0;
|
|
return VFW_E_NO_PALETTE_AVAILABLE;
|
|
}
|
|
|
|
// Do they just want to know how many are available
|
|
|
|
if (pPalette == NULL) {
|
|
*pRetrieved = pHeader->biClrUsed;
|
|
return NOERROR;
|
|
}
|
|
|
|
// Make sure the start position is a valid offset
|
|
|
|
if (StartIndex >= (LONG) pHeader->biClrUsed || StartIndex < 0) {
|
|
*pRetrieved = 0;
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
// Correct the number we can retrieve
|
|
|
|
LONG Available = (LONG) pHeader->biClrUsed - StartIndex;
|
|
*pRetrieved = max(0,min(Available,Entries));
|
|
if (*pRetrieved == 0) {
|
|
return S_FALSE;
|
|
}
|
|
|
|
// Copy the palette entries to the output buffer
|
|
|
|
PALETTEENTRY *pEntries = (PALETTEENTRY *) pPalette;
|
|
RGBQUAD *pColours = COLORS(pVideoInfo) + StartIndex;
|
|
|
|
for (LONG Count = 0;Count < *pRetrieved;Count++) {
|
|
pEntries[Count].peRed = pColours[Count].rgbRed;
|
|
pEntries[Count].peGreen = pColours[Count].rgbGreen;
|
|
pEntries[Count].peBlue = pColours[Count].rgbBlue;
|
|
pEntries[Count].peFlags = 0;
|
|
}
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// This returns the current video dimensions as a method rather than a number
|
|
// of individual property get calls. For the same reasons as said before we
|
|
// cannot access the renderer media type directly as the window object thread
|
|
// may be updating it since dynamic format changes may change these values
|
|
|
|
STDMETHODIMP CBaseControlVideo::GetVideoSize(__out long *pWidth,__out long *pHeight)
|
|
{
|
|
CheckPointer(pWidth,E_POINTER);
|
|
CheckPointer(pHeight,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
|
|
// Get the video format from the derived class
|
|
VIDEOINFOHEADER *pVideoInfo = GetVideoFormat();
|
|
if (pVideoInfo == NULL)
|
|
return E_OUTOFMEMORY;
|
|
*pWidth = pVideoInfo->bmiHeader.biWidth;
|
|
*pHeight = pVideoInfo->bmiHeader.biHeight;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Set the source video rectangle as left,top,right and bottom coordinates
|
|
// rather than left,top,width and height as per OLE automation interfaces
|
|
// Then pass the rectangle on to the window object to set the source
|
|
|
|
STDMETHODIMP
|
|
CBaseControlVideo::SetSourcePosition(long Left,long Top,long Width,long Height)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT SourceRect;
|
|
SourceRect.left = Left;
|
|
SourceRect.top = Top;
|
|
SourceRect.right = Left + Width;
|
|
SourceRect.bottom = Top + Height;
|
|
|
|
// Check the source rectangle is valid
|
|
|
|
HRESULT hr = CheckSourceRect(&SourceRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
// Now set the source rectangle
|
|
|
|
hr = SetSourceRect(&SourceRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return the source rectangle in left,top,width and height rather than the
|
|
// left,top,right and bottom values that RECT uses (and which the window
|
|
// object returns through GetSourceRect) which requires a little work
|
|
|
|
STDMETHODIMP
|
|
CBaseControlVideo::GetSourcePosition(__out long *pLeft,__out long *pTop,__out long *pWidth,__out long *pHeight)
|
|
{
|
|
// Should check the pointers are non NULL
|
|
|
|
CheckPointer(pLeft,E_POINTER);
|
|
CheckPointer(pTop,E_POINTER);
|
|
CheckPointer(pWidth,E_POINTER);
|
|
CheckPointer(pHeight,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
RECT SourceRect;
|
|
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
GetSourceRect(&SourceRect);
|
|
|
|
*pLeft = SourceRect.left;
|
|
*pTop = SourceRect.top;
|
|
*pWidth = WIDTH(&SourceRect);
|
|
*pHeight = HEIGHT(&SourceRect);
|
|
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Set the video destination as left,top,right and bottom coordinates rather
|
|
// than the left,top,width and height uses as per OLE automation interfaces
|
|
// Then pass the rectangle on to the window object to set the destination
|
|
|
|
STDMETHODIMP
|
|
CBaseControlVideo::SetDestinationPosition(long Left,long Top,long Width,long Height)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT DestinationRect;
|
|
|
|
DestinationRect.left = Left;
|
|
DestinationRect.top = Top;
|
|
DestinationRect.right = Left + Width;
|
|
DestinationRect.bottom = Top + Height;
|
|
|
|
// Check the target rectangle is valid
|
|
|
|
HRESULT hr = CheckTargetRect(&DestinationRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
// Now set the new target rectangle
|
|
|
|
hr = SetTargetRect(&DestinationRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return the destination rectangle in left,top,width and height rather than
|
|
// the left,top,right and bottom values that RECT uses (and which the window
|
|
// object returns through GetDestinationRect) which requires a little work
|
|
|
|
STDMETHODIMP
|
|
CBaseControlVideo::GetDestinationPosition(__out long *pLeft,__out long *pTop,__out long *pWidth,__out long *pHeight)
|
|
{
|
|
// Should check the pointers are not NULL
|
|
|
|
CheckPointer(pLeft,E_POINTER);
|
|
CheckPointer(pTop,E_POINTER);
|
|
CheckPointer(pWidth,E_POINTER);
|
|
CheckPointer(pHeight,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
RECT DestinationRect;
|
|
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
GetTargetRect(&DestinationRect);
|
|
|
|
*pLeft = DestinationRect.left;
|
|
*pTop = DestinationRect.top;
|
|
*pWidth = WIDTH(&DestinationRect);
|
|
*pHeight = HEIGHT(&DestinationRect);
|
|
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Set the source left position, the source rectangle we get back from the
|
|
// window object is a true rectangle in left,top,right and bottom positions
|
|
// so all we have to do is to update the left position and pass it back. We
|
|
// must keep the current width constant when we're updating this property
|
|
|
|
STDMETHODIMP CBaseControlVideo::put_SourceLeft(long SourceLeft)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT SourceRect;
|
|
GetSourceRect(&SourceRect);
|
|
SourceRect.right = SourceLeft + WIDTH(&SourceRect);
|
|
SourceRect.left = SourceLeft;
|
|
|
|
// Check the source rectangle is valid
|
|
|
|
HRESULT hr = CheckSourceRect(&SourceRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
// Now set the source rectangle
|
|
|
|
hr = SetSourceRect(&SourceRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return the current left source video position
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_SourceLeft(__out long *pSourceLeft)
|
|
{
|
|
CheckPointer(pSourceLeft,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT SourceRect;
|
|
|
|
GetSourceRect(&SourceRect);
|
|
*pSourceLeft = SourceRect.left;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Set the source width, we get the current source rectangle and then update
|
|
// the right position to be the left position (thereby keeping it constant)
|
|
// plus the new source width we are passed in (it expands to the right)
|
|
|
|
STDMETHODIMP CBaseControlVideo::put_SourceWidth(long SourceWidth)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT SourceRect;
|
|
GetSourceRect(&SourceRect);
|
|
SourceRect.right = SourceRect.left + SourceWidth;
|
|
|
|
// Check the source rectangle is valid
|
|
|
|
HRESULT hr = CheckSourceRect(&SourceRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
// Now set the source rectangle
|
|
|
|
hr = SetSourceRect(&SourceRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return the current source width
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_SourceWidth(__out long *pSourceWidth)
|
|
{
|
|
CheckPointer(pSourceWidth,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT SourceRect;
|
|
|
|
GetSourceRect(&SourceRect);
|
|
*pSourceWidth = WIDTH(&SourceRect);
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Set the source top position - changing this property does not affect the
|
|
// current source height. So changing this shunts the source rectangle up and
|
|
// down appropriately. Changing the height complements this functionality by
|
|
// keeping the top position constant and simply changing the source height
|
|
|
|
STDMETHODIMP CBaseControlVideo::put_SourceTop(long SourceTop)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT SourceRect;
|
|
GetSourceRect(&SourceRect);
|
|
SourceRect.bottom = SourceTop + HEIGHT(&SourceRect);
|
|
SourceRect.top = SourceTop;
|
|
|
|
// Check the source rectangle is valid
|
|
|
|
HRESULT hr = CheckSourceRect(&SourceRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
// Now set the source rectangle
|
|
|
|
hr = SetSourceRect(&SourceRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return the current top position
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_SourceTop(__out long *pSourceTop)
|
|
{
|
|
CheckPointer(pSourceTop,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT SourceRect;
|
|
|
|
GetSourceRect(&SourceRect);
|
|
*pSourceTop = SourceRect.top;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Set the source height
|
|
|
|
STDMETHODIMP CBaseControlVideo::put_SourceHeight(long SourceHeight)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT SourceRect;
|
|
GetSourceRect(&SourceRect);
|
|
SourceRect.bottom = SourceRect.top + SourceHeight;
|
|
|
|
// Check the source rectangle is valid
|
|
|
|
HRESULT hr = CheckSourceRect(&SourceRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
// Now set the source rectangle
|
|
|
|
hr = SetSourceRect(&SourceRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return the current source height
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_SourceHeight(__out long *pSourceHeight)
|
|
{
|
|
CheckPointer(pSourceHeight,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT SourceRect;
|
|
|
|
GetSourceRect(&SourceRect);
|
|
*pSourceHeight = HEIGHT(&SourceRect);
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Set the target left position, the target rectangle we get back from the
|
|
// window object is a true rectangle in left,top,right and bottom positions
|
|
// so all we have to do is to update the left position and pass it back. We
|
|
// must keep the current width constant when we're updating this property
|
|
|
|
STDMETHODIMP CBaseControlVideo::put_DestinationLeft(long DestinationLeft)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT DestinationRect;
|
|
GetTargetRect(&DestinationRect);
|
|
DestinationRect.right = DestinationLeft + WIDTH(&DestinationRect);
|
|
DestinationRect.left = DestinationLeft;
|
|
|
|
// Check the target rectangle is valid
|
|
|
|
HRESULT hr = CheckTargetRect(&DestinationRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
// Now set the new target rectangle
|
|
|
|
hr = SetTargetRect(&DestinationRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return the left position for the destination rectangle
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_DestinationLeft(__out long *pDestinationLeft)
|
|
{
|
|
CheckPointer(pDestinationLeft,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT DestinationRect;
|
|
|
|
GetTargetRect(&DestinationRect);
|
|
*pDestinationLeft = DestinationRect.left;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Set the destination width
|
|
|
|
STDMETHODIMP CBaseControlVideo::put_DestinationWidth(long DestinationWidth)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT DestinationRect;
|
|
GetTargetRect(&DestinationRect);
|
|
DestinationRect.right = DestinationRect.left + DestinationWidth;
|
|
|
|
// Check the target rectangle is valid
|
|
|
|
HRESULT hr = CheckTargetRect(&DestinationRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
// Now set the new target rectangle
|
|
|
|
hr = SetTargetRect(&DestinationRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return the width for the destination rectangle
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_DestinationWidth(__out long *pDestinationWidth)
|
|
{
|
|
CheckPointer(pDestinationWidth,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT DestinationRect;
|
|
|
|
GetTargetRect(&DestinationRect);
|
|
*pDestinationWidth = WIDTH(&DestinationRect);
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Set the target top position - changing this property does not affect the
|
|
// current target height. So changing this shunts the target rectangle up and
|
|
// down appropriately. Changing the height complements this functionality by
|
|
// keeping the top position constant and simply changing the target height
|
|
|
|
STDMETHODIMP CBaseControlVideo::put_DestinationTop(long DestinationTop)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT DestinationRect;
|
|
GetTargetRect(&DestinationRect);
|
|
DestinationRect.bottom = DestinationTop + HEIGHT(&DestinationRect);
|
|
DestinationRect.top = DestinationTop;
|
|
|
|
// Check the target rectangle is valid
|
|
|
|
HRESULT hr = CheckTargetRect(&DestinationRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
// Now set the new target rectangle
|
|
|
|
hr = SetTargetRect(&DestinationRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return the top position for the destination rectangle
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_DestinationTop(__out long *pDestinationTop)
|
|
{
|
|
CheckPointer(pDestinationTop,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT DestinationRect;
|
|
|
|
GetTargetRect(&DestinationRect);
|
|
*pDestinationTop = DestinationRect.top;
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Set the destination height
|
|
|
|
STDMETHODIMP CBaseControlVideo::put_DestinationHeight(long DestinationHeight)
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT DestinationRect;
|
|
GetTargetRect(&DestinationRect);
|
|
DestinationRect.bottom = DestinationRect.top + DestinationHeight;
|
|
|
|
// Check the target rectangle is valid
|
|
|
|
HRESULT hr = CheckTargetRect(&DestinationRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
// Now set the new target rectangle
|
|
|
|
hr = SetTargetRect(&DestinationRect);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return the height for the destination rectangle
|
|
|
|
STDMETHODIMP CBaseControlVideo::get_DestinationHeight(__out long *pDestinationHeight)
|
|
{
|
|
CheckPointer(pDestinationHeight,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
RECT DestinationRect;
|
|
|
|
GetTargetRect(&DestinationRect);
|
|
*pDestinationHeight = HEIGHT(&DestinationRect);
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Reset the source rectangle to the full video dimensions
|
|
|
|
STDMETHODIMP CBaseControlVideo::SetDefaultSourcePosition()
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
HRESULT hr = SetDefaultSourceRect();
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return S_OK if we're using the default source otherwise S_FALSE
|
|
|
|
STDMETHODIMP CBaseControlVideo::IsUsingDefaultSource()
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
return IsDefaultSourceRect();
|
|
}
|
|
|
|
|
|
// Reset the video renderer to use the entire playback area
|
|
|
|
STDMETHODIMP CBaseControlVideo::SetDefaultDestinationPosition()
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
HRESULT hr = SetDefaultTargetRect();
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
return OnUpdateRectangles();
|
|
}
|
|
|
|
|
|
// Return S_OK if we're using the default target otherwise S_FALSE
|
|
|
|
STDMETHODIMP CBaseControlVideo::IsUsingDefaultDestination()
|
|
{
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
return IsDefaultTargetRect();
|
|
}
|
|
|
|
|
|
// Return a copy of the current image in the video renderer
|
|
|
|
STDMETHODIMP
|
|
CBaseControlVideo::GetCurrentImage(__inout long *pBufferSize,__out_bcount_part(*pBufferSize, *pBufferSize) long *pVideoImage)
|
|
{
|
|
CheckPointer(pBufferSize,E_POINTER);
|
|
CheckConnected(m_pPin,VFW_E_NOT_CONNECTED);
|
|
CAutoLock cInterfaceLock(m_pInterfaceLock);
|
|
FILTER_STATE State;
|
|
|
|
// Make sure we are in a paused state
|
|
|
|
if (pVideoImage != NULL) {
|
|
m_pFilter->GetState(0,&State);
|
|
if (State != State_Paused) {
|
|
return VFW_E_NOT_PAUSED;
|
|
}
|
|
return GetStaticImage(pBufferSize,pVideoImage);
|
|
}
|
|
|
|
// Just return the memory required
|
|
|
|
VIDEOINFOHEADER *pVideoInfo = GetVideoFormat();
|
|
if (pVideoInfo == NULL)
|
|
return E_OUTOFMEMORY;
|
|
RECT SourceRect;
|
|
GetSourceRect(&SourceRect);
|
|
return GetImageSize(pVideoInfo,pBufferSize,&SourceRect);
|
|
}
|
|
|
|
|
|
// An application has two ways of using GetCurrentImage, one is to pass a real
|
|
// buffer which should be filled with the current image. The other is to pass
|
|
// a NULL buffer pointer which is interpreted as asking us to return how much
|
|
// memory is required for the image. The constraints for when the latter can
|
|
// be called are much looser. To calculate the memory required we synthesize
|
|
// a VIDEOINFO that takes into account the source rectangle that's being used
|
|
|
|
HRESULT CBaseControlVideo::GetImageSize(__in VIDEOINFOHEADER *pVideoInfo,
|
|
__out long *pBufferSize,
|
|
__in RECT *pSourceRect)
|
|
{
|
|
NOTE("Entering GetImageSize");
|
|
ASSERT(pSourceRect);
|
|
|
|
// Check we have the correct input parameters
|
|
|
|
if (pSourceRect == NULL ||
|
|
pVideoInfo == NULL ||
|
|
pBufferSize == NULL) {
|
|
|
|
return E_UNEXPECTED;
|
|
}
|
|
|
|
// Is the data format compatible
|
|
|
|
if (pVideoInfo->bmiHeader.biCompression != BI_RGB) {
|
|
if (pVideoInfo->bmiHeader.biCompression != BI_BITFIELDS) {
|
|
return E_INVALIDARG;
|
|
}
|
|
}
|
|
|
|
ASSERT(IsRectEmpty(pSourceRect) == FALSE);
|
|
|
|
BITMAPINFOHEADER bih;
|
|
bih.biWidth = WIDTH(pSourceRect);
|
|
bih.biHeight = HEIGHT(pSourceRect);
|
|
bih.biBitCount = pVideoInfo->bmiHeader.biBitCount;
|
|
LONG Size = DIBSIZE(bih);
|
|
Size += GetBitmapFormatSize(HEADER(pVideoInfo)) - SIZE_PREHEADER;
|
|
*pBufferSize = Size;
|
|
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Given an IMediaSample containing a linear buffer with an image and a type
|
|
// describing the bitmap make a rendering of the image into the output buffer
|
|
// This may be called by derived classes who render typical video images to
|
|
// handle the IBasicVideo GetCurrentImage method. The pVideoImage pointer may
|
|
// be NULL when passed to GetCurrentImage in which case GetImageSize will be
|
|
// called instead, which will just do the calculation of the memory required
|
|
|
|
HRESULT CBaseControlVideo::CopyImage(IMediaSample *pMediaSample,
|
|
__in VIDEOINFOHEADER *pVideoInfo,
|
|
__inout long *pBufferSize,
|
|
__out_bcount_part(*pBufferSize, *pBufferSize) BYTE *pVideoImage,
|
|
__in RECT *pSourceRect)
|
|
{
|
|
NOTE("Entering CopyImage");
|
|
ASSERT(pSourceRect);
|
|
BYTE *pCurrentImage;
|
|
|
|
// Check we have an image to copy
|
|
|
|
if (pMediaSample == NULL || pSourceRect == NULL ||
|
|
pVideoInfo == NULL || pVideoImage == NULL ||
|
|
pBufferSize == NULL) {
|
|
|
|
return E_UNEXPECTED;
|
|
}
|
|
|
|
// Is the data format compatible
|
|
|
|
if (pVideoInfo->bmiHeader.biCompression != BI_RGB) {
|
|
if (pVideoInfo->bmiHeader.biCompression != BI_BITFIELDS) {
|
|
return E_INVALIDARG;
|
|
}
|
|
}
|
|
|
|
if (*pBufferSize < 0) {
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
// Arbitrarily large size to prevent integer overflow problems
|
|
if (pVideoInfo->bmiHeader.biSize > 4096)
|
|
{
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
ASSERT(IsRectEmpty(pSourceRect) == FALSE);
|
|
|
|
BITMAPINFOHEADER bih;
|
|
bih.biWidth = WIDTH(pSourceRect);
|
|
bih.biHeight = HEIGHT(pSourceRect);
|
|
bih.biBitCount = pVideoInfo->bmiHeader.biBitCount;
|
|
DWORD Size = GetBitmapFormatSize(HEADER(pVideoInfo)) - SIZE_PREHEADER;
|
|
DWORD Total;
|
|
DWORD dwDibSize;
|
|
|
|
if( !ValidateBitmapInfoHeader( HEADER(pVideoInfo), Size)) {
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
// ValidateBitmapInfoHeader checks this but for some reason code scanning
|
|
// tools aren't picking up the annotation
|
|
__analysis_assume(Size >= sizeof(BITMAPINFOHEADER));
|
|
|
|
if (FAILED(SAFE_DIBSIZE(&bih, &dwDibSize))) {
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
if (FAILED(DWordAdd(Size, dwDibSize, &Total))) {
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
// Make sure we have a large enough buffer
|
|
|
|
if ((DWORD)*pBufferSize < Total) {
|
|
return E_OUTOFMEMORY;
|
|
}
|
|
|
|
// Copy the BITMAPINFO
|
|
|
|
CopyMemory((PVOID)pVideoImage, (PVOID)&pVideoInfo->bmiHeader, Size);
|
|
((BITMAPINFOHEADER *)pVideoImage)->biWidth = WIDTH(pSourceRect);
|
|
((BITMAPINFOHEADER *)pVideoImage)->biHeight = HEIGHT(pSourceRect);
|
|
((BITMAPINFOHEADER *)pVideoImage)->biSizeImage = DIBSIZE(bih);
|
|
BYTE *pImageData = pVideoImage + Size;
|
|
|
|
// Get the pointer to it's image data
|
|
|
|
HRESULT hr = pMediaSample->GetPointer(&pCurrentImage);
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
// Now we are ready to start copying the source scan lines
|
|
|
|
LONG ScanLine = (pVideoInfo->bmiHeader.biBitCount / 8) * WIDTH(pSourceRect);
|
|
LONG LinesToSkip = pVideoInfo->bmiHeader.biHeight;
|
|
LinesToSkip -= pSourceRect->top + HEIGHT(pSourceRect);
|
|
pCurrentImage += LinesToSkip * DIBWIDTHBYTES(pVideoInfo->bmiHeader);
|
|
pCurrentImage += pSourceRect->left * (pVideoInfo->bmiHeader.biBitCount / 8);
|
|
|
|
// Even money on this GP faulting sometime...
|
|
|
|
for (LONG Line = 0;Line < HEIGHT(pSourceRect);Line++) {
|
|
CopyMemory((PVOID)pImageData, (PVOID)pCurrentImage, ScanLine);
|
|
pImageData += DIBWIDTHBYTES(*(BITMAPINFOHEADER *)pVideoImage);
|
|
pCurrentImage += DIBWIDTHBYTES(pVideoInfo->bmiHeader);
|
|
}
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Called when we change media types either during connection or dynamically
|
|
// We inform the filter graph and therefore the application that the video
|
|
// size may have changed, we don't bother looking to see if it really has as
|
|
// we leave that to the application - the dimensions are the event parameters
|
|
|
|
HRESULT CBaseControlVideo::OnVideoSizeChange()
|
|
{
|
|
// Get the video format from the derived class
|
|
|
|
VIDEOINFOHEADER *pVideoInfo = GetVideoFormat();
|
|
if (pVideoInfo == NULL)
|
|
return E_OUTOFMEMORY;
|
|
WORD Width = (WORD) pVideoInfo->bmiHeader.biWidth;
|
|
WORD Height = (WORD) pVideoInfo->bmiHeader.biHeight;
|
|
|
|
return m_pFilter->NotifyEvent(EC_VIDEO_SIZE_CHANGED,
|
|
MAKELPARAM(Width,Height),
|
|
MAKEWPARAM(0,0));
|
|
}
|
|
|
|
|
|
// Set the video source rectangle. We must check the source rectangle against
|
|
// the actual video dimensions otherwise when we come to draw the pictures we
|
|
// get access violations as GDI tries to touch data outside of the image data
|
|
// Although we store the rectangle in left, top, right and bottom coordinates
|
|
// instead of left, top, width and height as OLE uses we do take into account
|
|
// that the rectangle is used up to, but not including, the right column and
|
|
// bottom row of pixels, see the Win32 documentation on RECT for more details
|
|
|
|
HRESULT CBaseControlVideo::CheckSourceRect(__in RECT *pSourceRect)
|
|
{
|
|
CheckPointer(pSourceRect,E_POINTER);
|
|
LONG Width,Height;
|
|
GetVideoSize(&Width,&Height);
|
|
|
|
// Check the coordinates are greater than zero
|
|
// and that the rectangle is valid (left<right, top<bottom)
|
|
|
|
if ((pSourceRect->left >= pSourceRect->right) ||
|
|
(pSourceRect->left < 0) ||
|
|
(pSourceRect->top >= pSourceRect->bottom) ||
|
|
(pSourceRect->top < 0)) {
|
|
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
// Check the coordinates are less than the extents
|
|
|
|
if ((pSourceRect->right > Width) ||
|
|
(pSourceRect->bottom > Height)) {
|
|
|
|
return E_INVALIDARG;
|
|
}
|
|
return NOERROR;
|
|
}
|
|
|
|
|
|
// Check the target rectangle has some valid coordinates, which amounts to
|
|
// little more than checking the destination rectangle isn't empty. Derived
|
|
// classes may call this when they have their SetTargetRect method called to
|
|
// check the rectangle validity, we do not update the rectangles passed in
|
|
// Although we store the rectangle in left, top, right and bottom coordinates
|
|
// instead of left, top, width and height as OLE uses we do take into account
|
|
// that the rectangle is used up to, but not including, the right column and
|
|
// bottom row of pixels, see the Win32 documentation on RECT for more details
|
|
|
|
HRESULT CBaseControlVideo::CheckTargetRect(__in RECT *pTargetRect)
|
|
{
|
|
// Check the pointer is valid
|
|
|
|
if (pTargetRect == NULL) {
|
|
return E_POINTER;
|
|
}
|
|
|
|
// These overflow the WIDTH and HEIGHT checks
|
|
|
|
if (pTargetRect->left > pTargetRect->right ||
|
|
pTargetRect->top > pTargetRect->bottom) {
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
// Check the rectangle has valid coordinates
|
|
|
|
if (WIDTH(pTargetRect) <= 0 || HEIGHT(pTargetRect) <= 0) {
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
ASSERT(IsRectEmpty(pTargetRect) == FALSE);
|
|
return NOERROR;
|
|
}
|
|
|