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// File: WXDebug.h
// Desc: DirectShow base classes - provides debugging facilities.
// Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
#ifndef __WXDEBUG__
#define __WXDEBUG__
// This library provides fairly straight forward debugging functionality, this
// is split into two main sections. The first is assertion handling, there are
// three types of assertions provided here. The most commonly used one is the
// ASSERT(condition) macro which will pop up a message box including the file
// and line number if the condition evaluates to FALSE. Then there is the
// EXECUTE_ASSERT macro which is the same as ASSERT except the condition will
// still be executed in NON debug builds. The final type of assertion is the
// KASSERT macro which is more suitable for pure (perhaps kernel) filters as
// the condition is printed onto the debugger rather than in a message box.
// The other part of the debug module facilties is general purpose logging.
// This is accessed by calling DbgLog(). The function takes a type and level
// field which define the type of informational string you are presenting and
// it's relative importance. The type field can be a combination (one or more)
// is a DWORD value where zero defines highest important. Use of zero as the
// debug logging level is to be encouraged ONLY for major errors or events as
// they will ALWAYS be displayed on the debugger. Other debug output has it's
// level matched against the current debug output level stored in the registry
// for this module and if less than the current setting it will be displayed.
// Each module or executable has it's own debug output level for each of the
// five types. These are read in when the DbgInitialise function is called
// for DLLs linking to STRMBASE.LIB this is done automatically when the DLL
// is loaded, executables must call it explicitely with the module instance
// handle given to them through the WINMAIN entry point. An executable must
// also call DbgTerminate when they have finished to clean up the resources
// the debug library uses, once again this is done automatically for DLLs
// These are the five different categories of logging information
enum { LOG_TIMING = 0x01, // Timing and performance measurements
LOG_TRACE = 0x02, // General step point call tracing
LOG_MEMORY = 0x04, // Memory and object allocation/destruction
LOG_LOCKING = 0x08, // Locking/unlocking of critical sections
LOG_ERROR = 0x10, // Debug error notification
LOG_CUSTOM1 = 0x20,
LOG_CUSTOM2 = 0x40,
LOG_CUSTOM3 = 0x80,
LOG_CUSTOM4 = 0x100,
LOG_CUSTOM5 = 0x200,
#define LOG_FORCIBLY_SET 0x80000000
enum { CDISP_HEX = 0x01,
CDISP_DEC = 0x02};
// For each object created derived from CBaseObject (in debug builds) we
// create a descriptor that holds it's name (statically allocated memory)
// and a cookie we assign it. We keep a list of all the active objects
// we have registered so that we can dump a list of remaining objects
typedef struct tag_ObjectDesc {
LPCSTR m_szName;
LPCWSTR m_wszName;
DWORD m_dwCookie;
tag_ObjectDesc *m_pNext;
} ObjectDesc;
#define DLLIMPORT __declspec(dllimport)
#define DLLEXPORT __declspec(dllexport)
#ifdef DEBUG
#define NAME(x) TEXT(x)
// These are used internally by the debug library (PRIVATE)
void WINAPI DbgInitKeyLevels(HKEY hKey, bool fTakeMax);
void WINAPI DbgInitGlobalSettings(bool fTakeMax);
void WINAPI DbgInitModuleSettings(bool fTakeMax);
void WINAPI DbgInitModuleName();
DWORD WINAPI DbgRegisterObjectCreation(
LPCSTR szObjectName, LPCWSTR wszObjectName);
BOOL WINAPI DbgRegisterObjectDestruction(DWORD dwCookie);
// These are the PUBLIC entry points
BOOL WINAPI DbgCheckModuleLevel(DWORD Type,DWORD Level);
void WINAPI DbgSetModuleLevel(DWORD Type,DWORD Level);
void WINAPI DbgSetAutoRefreshLevels(bool fAuto);
// Initialise the library with the module handle
void WINAPI DbgInitialise(HINSTANCE hInst);
void WINAPI DbgTerminate();
void WINAPI DbgDumpObjectRegister();
// Display error and logging to the user
void WINAPI DbgAssert(LPCTSTR pCondition,LPCTSTR pFileName,INT iLine);
void WINAPI DbgBreakPoint(LPCTSTR pCondition,LPCTSTR pFileName,INT iLine);
void WINAPI DbgBreakPoint(LPCTSTR pFileName,INT iLine,__format_string LPCTSTR szFormatString,...);
void WINAPI DbgKernelAssert(LPCTSTR pCondition,LPCTSTR pFileName,INT iLine);
void WINAPI DbgLogInfo(DWORD Type,DWORD Level,__format_string LPCTSTR pFormat,...);
#ifdef UNICODE
void WINAPI DbgLogInfo(DWORD Type,DWORD Level,__format_string LPCSTR pFormat,...);
void WINAPI DbgAssert(LPCSTR pCondition,LPCSTR pFileName,INT iLine);
void WINAPI DbgBreakPoint(LPCSTR pCondition,LPCSTR pFileName,INT iLine);
void WINAPI DbgKernelAssert(LPCSTR pCondition,LPCSTR pFileName,INT iLine);
void WINAPI DbgOutString(LPCTSTR psz);
// Debug infinite wait stuff
DWORD WINAPI DbgWaitForSingleObject(HANDLE h);
DWORD WINAPI DbgWaitForMultipleObjects(DWORD nCount,
__in_ecount(nCount) CONST HANDLE *lpHandles,
BOOL bWaitAll);
void WINAPI DbgSetWaitTimeout(DWORD dwTimeout);
#ifdef __strmif_h__
// Display a media type: Terse at level 2, verbose at level 5
void WINAPI DisplayType(LPCTSTR label, const AM_MEDIA_TYPE *pmtIn);
// Dump lots of information about a filter graph
void WINAPI DumpGraph(IFilterGraph *pGraph, DWORD dwLevel);
#define KASSERT(_x_) if (!(_x_)) \
// Break on the debugger without putting up a message box
// message goes to debugger instead
#define KDbgBreak(_x_) \
// We chose a common name for our ASSERT macro, MFC also uses this name
// So long as the implementation evaluates the condition and handles it
// then we will be ok. Rather than override the behaviour expected we
// will leave whatever first defines ASSERT as the handler (i.e. MFC)
#ifndef ASSERT
#define ASSERT(_x_) if (!(_x_)) \
#define DbgAssertAligned( _ptr_, _alignment_ ) ASSERT( ((DWORD_PTR) (_ptr_)) % (_alignment_) == 0)
// Put up a message box informing the user of a halt
// condition in the program
#define DbgBreak(_x_) \
#define EXECUTE_ASSERT(_x_) ASSERT(_x_)
#define DbgLog(_x_) DbgLogInfo _x_
// MFC style trace macros
#define NOTE(_x_) DbgLog((LOG_TRACE,5,TEXT(_x_)))
#define NOTE1(_x_,a) DbgLog((LOG_TRACE,5,TEXT(_x_),a))
#define NOTE2(_x_,a,b) DbgLog((LOG_TRACE,5,TEXT(_x_),a,b))
#define NOTE3(_x_,a,b,c) DbgLog((LOG_TRACE,5,TEXT(_x_),a,b,c))
#define NOTE4(_x_,a,b,c,d) DbgLog((LOG_TRACE,5,TEXT(_x_),a,b,c,d))
#define NOTE5(_x_,a,b,c,d,e) DbgLog((LOG_TRACE,5,TEXT(_x_),a,b,c,d,e))
// Retail builds make public debug functions inert - WARNING the source
// files do not define or build any of the entry points in debug builds
// (public entry points compile to nothing) so if you go trying to call
// any of the private entry points in your source they won't compile
#define NAME(_x_) ((LPTSTR) NULL)
#define DbgInitialise(hInst)
#define DbgTerminate()
#define DbgLog(_x_) 0
#define DbgOutString(psz)
#define DbgAssertAligned( _ptr_, _alignment_ ) 0
#define DbgRegisterObjectCreation(pObjectName)
#define DbgRegisterObjectDestruction(dwCookie)
#define DbgDumpObjectRegister()
#define DbgCheckModuleLevel(Type,Level)
#define DbgSetModuleLevel(Type,Level)
#define DbgSetAutoRefreshLevels(fAuto)
#define DbgWaitForSingleObject(h) WaitForSingleObject(h, INFINITE)
#define DbgWaitForMultipleObjects(nCount, lpHandles, bWaitAll) \
WaitForMultipleObjects(nCount, lpHandles, bWaitAll, INFINITE)
#define DbgSetWaitTimeout(dwTimeout)
#define KDbgBreak(_x_)
#define DbgBreak(_x_)
#define KASSERT(_x_) ((void)0)
#ifndef ASSERT
#define ASSERT(_x_) ((void)0)
#define EXECUTE_ASSERT(_x_) ((void)(_x_))
// MFC style trace macros
#define NOTE(_x_) ((void)0)
#define NOTE1(_x_,a) ((void)0)
#define NOTE2(_x_,a,b) ((void)0)
#define NOTE3(_x_,a,b,c) ((void)0)
#define NOTE4(_x_,a,b,c,d) ((void)0)
#define NOTE5(_x_,a,b,c,d,e) ((void)0)
#define DisplayType(label, pmtIn) ((void)0)
#define DumpGraph(pGraph, label) ((void)0)
// Checks a pointer which should be non NULL - can be used as follows.
#define CheckPointer(p,ret) {if((p)==NULL) return (ret);}
// HRESULT Foo(VOID *pBar)
// {
// CheckPointer(pBar,E_INVALIDARG)
// }
// Or if the function returns a boolean
// BOOL Foo(VOID *pBar)
// {
// CheckPointer(pBar,FALSE)
// }
#define ValidateReadPtr(p,cb) 0
#define ValidateWritePtr(p,cb) 0
#define ValidateReadWritePtr(p,cb) 0
#define ValidateStringPtr(p) 0
#define ValidateStringPtrA(p) 0
#define ValidateStringPtrW(p) 0
#ifdef _OBJBASE_H_
// Outputting GUID names. If you want to include the name
// associated with a GUID (eg CLSID_...) then
// GuidNames[yourGUID]
// Returns the name defined in uuids.h as a string
typedef struct {
CHAR *szName;
GUID guid;
class CGuidNameList {
CHAR *operator [] (const GUID& guid);
extern CGuidNameList GuidNames;
#ifndef REMIND
// REMIND macro - generates warning as reminder to complete coding
// (eg) usage:
// #pragma message (REMIND("Add automation support"))
#define QUOTE(x) #x
#define QQUOTE(y) QUOTE(y)
#define REMIND(str) __FILE__ "(" QQUOTE(__LINE__) ") : " str
// Method to display objects in a useful format
// eg If you want to display a LONGLONG ll in a debug string do (eg)
// DbgLog((LOG_TRACE, n, TEXT("Value is %s"), (LPCTSTR)CDisp(ll, CDISP_HEX)));
class CDispBasic
CDispBasic() { m_pString = m_String; };
PTCHAR m_pString; // normally points to m_String... unless too much data
TCHAR m_String[50];
class CDisp : public CDispBasic
CDisp(LONGLONG ll, int Format = CDISP_HEX); // Display a LONGLONG in CDISP_HEX or CDISP_DEC form
CDisp(REFCLSID clsid); // Display a GUID
CDisp(double d); // Display a floating point number
#ifdef __strmif_h__
#ifdef __STREAMS__
CDisp(CRefTime t); // Display a Reference Time
CDisp(IPin *pPin); // Display a pin as {filter clsid}(pin name)
CDisp(IUnknown *pUnk); // Display a filter or pin
#endif // __strmif_h__
// Implement cast to (LPCTSTR) as parameter to logger
operator LPCTSTR()
return (LPCTSTR)m_pString;
#if defined(DEBUG)
class CAutoTrace
LPCTSTR _szBlkName;
const int _level;
static const TCHAR _szEntering[];
static const TCHAR _szLeaving[];
CAutoTrace(LPCTSTR szBlkName, const int level = 15)
: _szBlkName(szBlkName), _level(level)
{DbgLog((LOG_TRACE, _level, _szEntering, _szBlkName));}
{DbgLog((LOG_TRACE, _level, _szLeaving, _szBlkName));}
#if defined (__FUNCTION__)
#define AMTRACEFN() CAutoTrace __trace(TEXT(__FUNCTION__))
#define AMTRACE(_x_) CAutoTrace __trace(TEXT(__FUNCTION__))
#define AMTRACE(_x_) CAutoTrace __trace _x_
#define AMTRACEFN()
#define AMTRACE(_x_)
#define AMTRACEFN()
#endif // __WXDEBUG__