1

utils/demoinfo/demoinfo.cpp

@@ -0,0 +1,527 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: A simple application demonstrating the HL2 demo file format ( subject to change!!! )
+//
+// $NoKeywords: $
+//=============================================================================//
+#include <windows.h>
+#include "tier0/dbg.h"
+#include "filesystem.h"
+#include "FileSystem_Tools.h"
+#include "cmdlib.h"
+#include "tooldemofile.h"
+
+static bool uselogfile = false;
+static bool spewed = false;
+
+#define LOGFILE_NAME			"log.txt"
+
+#define COM_COPY_CHUNK_SIZE		8192
+
+//-----------------------------------------------------------------------------
+// Purpose: Prints to stdout and to the developer console and optionally to a log file
+// Input  : depth - 
+//			*fmt - 
+//			... - 
+//-----------------------------------------------------------------------------
+void vprint( int depth, const char *fmt, ... )
+{
+	char string[ 8192 ];
+	va_list va;
+	va_start( va, fmt );
+	vsprintf( string, fmt, va );
+	va_end( va );
+
+	FILE *fp = NULL;
+
+	if ( uselogfile )
+	{
+		fp = fopen( LOGFILE_NAME, "ab" );
+	}
+
+	while ( depth-- > 0 )
+	{
+		printf( "  " );
+		OutputDebugString( "  " );
+		if ( fp )
+		{
+			fprintf( fp, "  " );
+		}
+	}
+
+	::printf( "%s", string );
+	OutputDebugString( string );
+
+	if ( fp )
+	{
+		char *p = string;
+		while ( *p )
+		{
+			if ( *p == '\n' )
+			{
+				fputc( '\r', fp );
+			}
+			fputc( *p, fp );
+			p++;
+		}
+		fclose( fp );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Warning/Msg call back through this API
+// Input  : type - 
+//			*pMsg - 
+// Output : SpewRetval_t
+//-----------------------------------------------------------------------------
+SpewRetval_t SpewFunc( SpewType_t type, char const *pMsg )
+{	
+	spewed = true;
+
+	switch ( type )
+	{
+
+	default:
+	case SPEW_MESSAGE:
+	case SPEW_ASSERT:
+	case SPEW_LOG:
+		vprint( 0, "%s", pMsg );
+		break;
+	case SPEW_WARNING:
+	
+		if ( verbose )
+		{
+			vprint( 0, "%s", pMsg );
+		}
+		break;
+	case SPEW_ERROR:
+		vprint( 0, "%s\n", pMsg );
+		break;
+	}
+	
+	return SPEW_CONTINUE;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Shows usage information
+//-----------------------------------------------------------------------------
+void printusage( void )
+{
+	vprint( 0, "usage:  demoinfo <.dem file>\n\
+		\t-v = verbose output\n\
+		\t-l = log to file log.txt\n\
+		\ne.g.:  demoinfo -v u:/hl2/hl2/foo.dem\n" );
+
+	// Exit app
+	exit( 1 );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Removes previous log file
+//-----------------------------------------------------------------------------
+void CheckLogFile( void )
+{
+	if ( uselogfile )
+	{
+		_unlink( LOGFILE_NAME );
+		vprint( 0, "    Outputting to log.txt\n" );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Prints banner
+//-----------------------------------------------------------------------------
+void PrintHeader()
+{
+	vprint( 0, "Valve Software - demoinfo.exe (%s)\n", __DATE__ );
+	vprint( 0, "--- Demo File Info Sample ---\n" );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Parses all "smoothing" info from .dem file
+// Input  : &demoFile - 
+//			smooth - 
+//-----------------------------------------------------------------------------
+void ParseSmoothingInfo( CToolDemoFile &demoFile, CUtlVector< demosmoothing_t >& smooth )
+{
+	democmdinfo_t	info;
+	int				dummy;
+
+	bool demofinished = false;
+	while ( !demofinished )
+	{
+		int			tick = 0;
+		byte		cmd;
+
+		bool swallowmessages = true;
+		do
+		{
+			demoFile.ReadCmdHeader( cmd, tick );
+
+			// COMMAND HANDLERS
+			switch ( cmd )
+			{
+			case dem_synctick:
+				break;
+			case dem_stop:
+				{
+					swallowmessages = false;
+					demofinished = true;
+				}
+				break;
+			case dem_consolecmd:
+				{
+					demoFile.ReadConsoleCommand();
+				}
+				break;
+			case dem_datatables:
+				{
+					demoFile.ReadNetworkDataTables( NULL );
+				}
+				break;
+			case dem_usercmd:
+				{
+					demoFile.ReadUserCmd( NULL, dummy );
+					
+				}
+				break;
+			default:
+				{
+					swallowmessages = false;
+				}
+				break;
+			}
+		}
+		while ( swallowmessages );
+
+		if ( demofinished )
+		{
+			// StopPlayback();
+			return;
+		}
+
+		int curpos = demoFile.GetCurPos();
+
+		demoFile.ReadCmdInfo( info );
+		demoFile.ReadSequenceInfo( dummy, dummy ); 
+		demoFile.ReadRawData( NULL, 0 );
+
+		demosmoothing_t smoothing_entry;
+
+		smoothing_entry.file_offset = curpos;
+		smoothing_entry.frametick = tick; 
+		smoothing_entry.info = info;
+		smoothing_entry.samplepoint = false;
+		smoothing_entry.vecmoved = 	info.GetViewOrigin();
+		smoothing_entry.angmoved = 	info.GetViewAngles();
+		smoothing_entry.targetpoint = false;
+		smoothing_entry.vectarget = info.GetViewOrigin();
+
+		// Add to end of list
+
+		smooth.AddToTail( smoothing_entry );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Resets all smoothing data back to original values
+// Input  : smoothing - 
+//-----------------------------------------------------------------------------
+void ClearSmoothingInfo( CSmoothingContext& smoothing )
+{
+	int c = smoothing.smooth.Count();
+	int i;
+
+	for ( i = 0; i < c; i++ )
+	{
+		demosmoothing_t	*p = &smoothing.smooth[ i ];
+		p->info.Reset();
+		p->vecmoved = p->info.GetViewOrigin();
+		p->angmoved = p->info.GetViewAngles();
+		p->samplepoint = false;
+		p->vectarget = p->info.GetViewOrigin();
+		p->targetpoint = false;
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Helper for copying sub-chunk of file
+// Input  : dst - 
+//			src - 
+//			nSize - 
+//-----------------------------------------------------------------------------
+void COM_CopyFileChunk( FileHandle_t dst, FileHandle_t src, int nSize )
+{
+	int   copysize = nSize;
+	char  copybuf[COM_COPY_CHUNK_SIZE];
+
+	while (copysize > COM_COPY_CHUNK_SIZE)
+	{
+		g_pFileSystem->Read ( copybuf, COM_COPY_CHUNK_SIZE, src );
+		g_pFileSystem->Write( copybuf, COM_COPY_CHUNK_SIZE, dst );
+		copysize -= COM_COPY_CHUNK_SIZE;
+	}
+
+	g_pFileSystem->Read ( copybuf, copysize, src );
+	g_pFileSystem->Write( copybuf, copysize, dst );
+
+	g_pFileSystem->Flush ( src );
+	g_pFileSystem->Flush ( dst );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Writes out a new .dem file based on the existing dem file with new camera positions saved into the dem file
+//  Note:  The new file is named filename_smooth.dem
+// Input  : *filename - 
+//			smoothing - 
+//-----------------------------------------------------------------------------
+void SaveSmoothingInfo( char const *filename, CSmoothingContext& smoothing )
+{
+	// Nothing to do
+	int c = smoothing.smooth.Count();
+	if ( !c )
+		return;
+
+	IBaseFileSystem *fs = g_pFileSystem;
+
+	FileHandle_t infile, outfile;
+
+	infile = fs->Open( filename, "rb", "GAME" );
+	if ( infile == FILESYSTEM_INVALID_HANDLE )
+		return;
+
+	int filesize = fs->Size( infile );
+
+	char outfilename[ 512 ];
+	Q_StripExtension( filename, outfilename, sizeof( outfilename ) );
+	Q_strncat( outfilename, "_smooth", sizeof(outfilename), COPY_ALL_CHARACTERS );
+	Q_DefaultExtension( outfilename, ".dem", sizeof( outfilename ) );
+	outfile = fs->Open( outfilename, "wb", "GAME" );
+	if ( outfile == FILESYSTEM_INVALID_HANDLE )
+	{
+		fs->Close( infile );
+		return;
+	}
+
+	int i;
+
+	// The basic algorithm is to seek to each sample and "overwrite" it during copy with the new data...
+	int lastwritepos = 0;
+	for ( i = 0; i < c; i++ )
+	{
+		demosmoothing_t	*p = &smoothing.smooth[ i ];
+
+		int copyamount = p->file_offset - lastwritepos;
+
+		COM_CopyFileChunk( outfile, infile, copyamount );
+
+		fs->Seek( infile, p->file_offset, FILESYSTEM_SEEK_HEAD );
+
+		// wacky hacky overwriting 
+		fs->Write( &p->info, sizeof( democmdinfo_t ), outfile );
+
+		lastwritepos = fs->Tell( outfile );
+		fs->Seek( infile, p->file_offset + sizeof( democmdinfo_t ), FILESYSTEM_SEEK_HEAD );
+	}
+
+	// Copy the final bit of data, if any...
+	int final = filesize - lastwritepos;
+
+	COM_CopyFileChunk( outfile, infile, final );
+
+	fs->Close( outfile );
+	fs->Close( infile );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Helper for spewing verbose sample information
+// Input  : flags - 
+// Output : char const
+//-----------------------------------------------------------------------------
+char const *DescribeFlags( int flags )
+{
+	static char outbuf[ 256 ];
+
+	outbuf[ 0 ] = 0;
+
+	if ( flags & FDEMO_USE_ORIGIN2 )
+	{
+		Q_strncat( outbuf, "USE_ORIGIN2, ", sizeof( outbuf ), COPY_ALL_CHARACTERS );
+	}
+	if ( flags & FDEMO_USE_ANGLES2 )
+	{
+		Q_strncat( outbuf, "USE_ANGLES2, ", sizeof( outbuf ), COPY_ALL_CHARACTERS );
+	}
+	if ( flags & FDEMO_NOINTERP )
+	{
+		Q_strncat( outbuf, "NOINTERP, ", sizeof( outbuf ), COPY_ALL_CHARACTERS );
+	}
+
+	int len = Q_strlen( outbuf );
+	if ( len > 2 )
+	{
+		outbuf[ len - 2 ] = 0;
+	}
+	else
+	{
+		Q_strncpy( outbuf, "N/A", sizeof( outbuf ) );
+	}
+	return outbuf;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Loads up all camera samples from a .dem file into the passed in context.
+// Input  : *filename - 
+//			smoothing - 
+//-----------------------------------------------------------------------------
+void LoadSmoothingInfo( const char *filename, CSmoothingContext& smoothing )
+{
+	char name[ MAX_OSPATH ];
+	Q_strncpy (name, filename, sizeof(name) );
+	Q_DefaultExtension( name, ".dem", sizeof( name ) );
+
+	CToolDemoFile demoFile;
+
+	if ( !demoFile.Open( filename, true )  )
+	{
+		Warning( "ERROR: couldn't open %s.\n", name );
+		return;
+	}
+
+	demoheader_t * header = demoFile.ReadDemoHeader();
+
+	if ( !header )
+	{
+		demoFile.Close();
+		return;
+	}
+
+	Msg( "\n\n" );
+	Msg( "--------------------------------------------------------------\n" );
+	Msg( "demofilestamp:     '%s'\n", header->demofilestamp );
+	Msg( "demoprotocol:      %i\n", header->demoprotocol );
+	Msg( "networkprotocol:   %i\n", header->networkprotocol );
+	Msg( "servername:        '%s'\n", header->servername );
+	Msg( "clientname:        '%s'\n", header->clientname );
+	Msg( "mapname:           '%s'\n", header->mapname );
+	Msg( "gamedirectory:     '%s'\n", header->gamedirectory );
+	Msg( "playback_time:     %f seconds\n", header->playback_time );
+	Msg( "playback_ticks:    %i ticks\n", header->playback_ticks );
+	Msg( "playback_frames:   %i frames\n", header->playback_frames );
+	Msg( "signonlength:      %s\n", Q_pretifymem( header->signonlength ) );
+
+	smoothing.active = true;
+	Q_strncpy( smoothing.filename, name, sizeof(smoothing.filename) );
+
+	smoothing.smooth.RemoveAll();
+
+	ClearSmoothingInfo( smoothing );
+
+	ParseSmoothingInfo( demoFile, smoothing.smooth );
+
+	Msg( "--------------------------------------------------------------\n" );
+	Msg( "smoothing data:    %i samples\n", smoothing.smooth.Count() );
+
+	if ( verbose )
+	{
+		int c = smoothing.smooth.Count();
+		for ( int i = 0; i < c; ++i )
+		{
+			demosmoothing_t& sample = smoothing.smooth[ i ];
+
+			Msg( "Sample %i:\n", i );
+			Msg( "  file pos:         %i\n", sample.file_offset );
+			Msg( "  tick:             %i\n", sample.frametick );
+			Msg( "  flags:	          %s\n", DescribeFlags( sample.info.flags ) );
+
+			Msg( "  Original Data:\n" );
+			Msg( "  origin:           %.4f %.4f %.4f\n", sample.info.viewOrigin.x, sample.info.viewOrigin.y, sample.info.viewOrigin.z );
+			Msg( "  viewangles:       %.4f %.4f %.4f\n", sample.info.viewAngles.x, sample.info.viewAngles.y, sample.info.viewAngles.z );
+			Msg( "  localviewangles:  %.4f %.4f %.4f\n", sample.info.localViewAngles.x, sample.info.localViewAngles.y, sample.info.localViewAngles.z );
+
+			Msg( "  Resampled Data:\n" );
+			Msg( "  origin:           %.4f %.4f %.4f\n", sample.info.viewOrigin2.x, sample.info.viewOrigin2.y, sample.info.viewOrigin2.z );
+			Msg( "  viewangles:       %.4f %.4f %.4f\n", sample.info.viewAngles2.x, sample.info.viewAngles2.y, sample.info.viewAngles2.z );
+			Msg( "  localviewangles:  %.4f %.4f %.4f\n", sample.info.localViewAngles2.x, sample.info.localViewAngles2.y, sample.info.localViewAngles2.z );
+
+			Msg( "\n" );
+
+		}
+	}
+	
+	demoFile.Close();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : argc - 
+//			argv[] - 
+// Output : int
+//-----------------------------------------------------------------------------
+int main( int argc, char* argv[] )
+{
+	SpewOutputFunc( SpewFunc );
+	SpewActivate( "demoinfo", 2 );
+
+	int i = 1;
+	for ( i ; i<argc ; i++)
+	{
+		if ( argv[ i ][ 0 ] == '-' )
+		{
+			switch( argv[ i ][ 1 ] )
+			{
+			case 'l':
+				uselogfile = true;
+				break;
+			case 'v':
+				verbose = true;
+				break;
+			case 'g':
+				++i;
+				break;
+			default:
+				printusage();
+				break;
+			}
+		}
+	}
+
+	if ( argc < 2 || ( i != argc ) )
+	{
+		PrintHeader();
+		printusage();
+	}
+
+	CheckLogFile();
+
+	PrintHeader();
+
+	vprint( 0, "    Info for %s..\n", argv[ i - 1 ] );
+
+	char workingdir[ 256 ];
+	workingdir[0] = 0;
+	Q_getwd( workingdir, sizeof( workingdir ) );
+
+	if ( !FileSystem_Init( NULL, 0, FS_INIT_FULL ) )
+		return 1;
+
+	// Add this so relative filenames work.
+	g_pFullFileSystem->AddSearchPath( workingdir, "game", PATH_ADD_TO_HEAD );
+
+	// Load the demo
+	CSmoothingContext	context;
+
+	LoadSmoothingInfo( argv[ i - 1 ], context );
+
+	// Note to tool makers:  
+	// Do your work here!!!
+	//Performsmoothing( context );
+
+	// Save out updated .dem file
+	// UNCOMMENT THIS TO ENABLE OUTPUTTING NEW .DEM FILES!!!
+	// SaveSmoothingInfo( argv[ i - 1 ], context );
+
+	FileSystem_Term();
+
+	return 0;
+}

utils/demoinfo/demoinfo.vcproj

@@ -0,0 +1,549 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="7.10"
+	Name="demoinfo"
+	ProjectGUID="{4FE3FDCA-9571-44B3-A521-C81448434490}">
+	<Platforms>
+		<Platform
+			Name="Win32"/>
+	</Platforms>
+	<Configurations>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory=".\Release"
+			IntermediateDirectory=".\Release"
+			ConfigurationType="1"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="FALSE"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				InlineFunctionExpansion="1"
+				AdditionalIncludeDirectories="..\common,..\..\public,..\..\public\tier1"
+				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
+				StringPooling="TRUE"
+				RuntimeLibrary="4"
+				EnableFunctionLevelLinking="TRUE"
+				UsePrecompiledHeader="3"
+				PrecompiledHeaderThrough="stdafx.h"
+				PrecompiledHeaderFile=".\Release/demoinfo.pch"
+				AssemblerListingLocation=".\Release/"
+				ObjectFile=".\Release/"
+				ProgramDataBaseFileName=".\Release/"
+				WarningLevel="3"
+				SuppressStartupBanner="TRUE"
+				CompileAs="0"/>
+			<Tool
+				Name="VCCustomBuildTool"
+				CommandLine="if exist ..\..\..\game\bin\&quot;$(TargetName)&quot;.exe attrib -r ..\..\..\game\bin\&quot;$(TargetName)&quot;.exe
+copy &quot;$(TargetPath)&quot; ..\..\..\game\bin\&quot;$(TargetName)&quot;.exe
+if exist ..\..\..\game\bin\&quot;$(TargetName)&quot;.pdb attrib -r ..\..\..\game\bin\&quot;$(TargetName)&quot;.pdb
+copy &quot;$(TargetPath)&quot; ..\..\..\game\bin\&quot;$(TargetName)&quot;.pdb
+"
+				Outputs="..\..\..\game\bin\demoinfo.exe;..\..\..\game\bin\demoinfo.pdb"/>
+			<Tool
+				Name="VCLinkerTool"
+				OutputFile=".\Release/demoinfo.exe"
+				LinkIncremental="1"
+				SuppressStartupBanner="TRUE"
+				AdditionalLibraryDirectories="..\..\lib\public"
+				IgnoreDefaultLibraryNames="LIBCMT,LIBCMTD"
+				ProgramDatabaseFile=".\Release/demoinfo.pdb"
+				SubSystem="1"
+				TargetMachine="1"/>
+			<Tool
+				Name="VCMIDLTool"
+				TypeLibraryName=".\Release/demoinfo.tlb"
+				HeaderFileName=""/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+			<Tool
+				Name="VCManagedWrapperGeneratorTool"/>
+			<Tool
+				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+		</Configuration>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory=".\Debug"
+			IntermediateDirectory=".\Debug"
+			ConfigurationType="1"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="FALSE"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="..\..\public,..\..\public\tier1,..\common"
+				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="5"
+				UsePrecompiledHeader="3"
+				PrecompiledHeaderThrough="stdafx.h"
+				PrecompiledHeaderFile=".\Debug/demoinfo.pch"
+				AssemblerListingLocation=".\Debug/"
+				ObjectFile=".\Debug/"
+				ProgramDataBaseFileName=".\Debug/"
+				WarningLevel="4"
+				SuppressStartupBanner="TRUE"
+				DebugInformationFormat="3"
+				CompileAs="0"/>
+			<Tool
+				Name="VCCustomBuildTool"
+				CommandLine="if exist ..\..\..\game\bin\&quot;$(TargetName)&quot;.exe attrib -r ..\..\..\game\bin\&quot;$(TargetName)&quot;.exe
+copy &quot;$(TargetPath)&quot; ..\..\..\game\bin\&quot;$(TargetName)&quot;.exe
+if exist ..\..\..\game\bin\&quot;$(TargetName)&quot;.pdb attrib -r ..\..\..\game\bin\&quot;$(TargetName)&quot;.pdb
+copy &quot;$(TargetPath)&quot; ..\..\..\game\bin\&quot;$(TargetName)&quot;.pdb
+"
+				Outputs="..\..\..\game\bin\demoinfo.exe;..\..\..\game\bin\demoinfo.pdb"/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalOptions="/FIXED:NO"
+				OutputFile=".\Debug/demoinfo.exe"
+				LinkIncremental="2"
+				SuppressStartupBanner="TRUE"
+				AdditionalLibraryDirectories="..\..\lib\public"
+				IgnoreAllDefaultLibraries="FALSE"
+				IgnoreDefaultLibraryNames="LIBCMT,LIBCMTD"
+				GenerateDebugInformation="TRUE"
+				ProgramDatabaseFile=".\Debug/demoinfo.pdb"
+				GenerateMapFile="TRUE"
+				MapFileName=".\Debug/demoinfo.map"
+				SubSystem="1"
+				TargetMachine="1"/>
+			<Tool
+				Name="VCMIDLTool"
+				TypeLibraryName=".\Debug/demoinfo.tlb"
+				HeaderFileName=""/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="_DEBUG"
+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+			<Tool
+				Name="VCManagedWrapperGeneratorTool"/>
+			<Tool
+				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
+			<File
+				RelativePath="..\..\tier1\characterset.cpp">
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\common\cmdlib.cpp">
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\common\cmdlib.h">
+			</File>
+			<File
+				RelativePath="demoinfo.cpp">
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\..\public\filesystem_helpers.cpp">
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\..\public\filesystem_init.cpp">
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\common\filesystem_tools.cpp">
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\..\tier1\interface.cpp">
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\..\tier1\KeyValues.cpp">
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="tooldemofile.cpp">
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\..\tier1\utlbuffer.cpp">
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\..\tier1\utlsymbol.cpp">
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl">
+			<File
+				RelativePath="..\..\Public\tier0\basetypes.h">
+			</File>
+			<File
+				RelativePath="..\..\Public\commonmacros.h">
+			</File>
+			<File
+				RelativePath="..\..\public\tier0\dbg.h">
+			</File>
+			<File
+				RelativePath="..\..\public\demofile\demoformat.h">
+			</File>
+			<File
+				RelativePath="..\..\public\tier0\fasttimer.h">
+			</File>
+			<File
+				RelativePath="..\common\filesystem_tools.h">
+			</File>
+			<File
+				RelativePath="..\..\Public\mathlib\MATHLIB.H">
+			</File>
+			<File
+				RelativePath="..\..\public\tier0\memdbgon.h">
+			</File>
+			<File
+				RelativePath="..\..\public\tier0\platform.h">
+			</File>
+			<File
+				RelativePath="..\..\public\protected_things.h">
+			</File>
+			<File
+				RelativePath="..\..\public\string_t.h">
+			</File>
+			<File
+				RelativePath="..\..\public\vstdlib\strtools.h">
+			</File>
+			<File
+				RelativePath="..\..\Public\studio.h">
+			</File>
+			<File
+				RelativePath="tooldemofile.h">
+			</File>
+			<File
+				RelativePath="..\..\public\tier1\utldict.h">
+			</File>
+			<File
+				RelativePath="..\..\public\tier1\utlmemory.h">
+			</File>
+			<File
+				RelativePath="..\..\public\tier1\utlrbtree.h">
+			</File>
+			<File
+				RelativePath="..\..\public\tier1\utlsymbol.h">
+			</File>
+			<File
+				RelativePath="..\..\public\tier1\utlvector.h">
+			</File>
+			<File
+				RelativePath="..\..\Public\mathlib\vector.h">
+			</File>
+			<File
+				RelativePath="..\..\Public\mathlib\vector2d.h">
+			</File>
+			<File
+				RelativePath="..\..\Public\mathlib\vector4d.h">
+			</File>
+			<File
+				RelativePath="..\..\public\vstdlib\vstdlib.h">
+			</File>
+		</Filter>
+		<Filter
+			Name="DemoSmootherSampleSourceFiles"
+			Filter="*.h;*.cpp">
+			<File
+				RelativePath="demosmoothersamplesource.cpp">
+				<FileConfiguration
+					Name="Release|Win32"
+					ExcludedFromBuild="TRUE">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="2"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32"
+					ExcludedFromBuild="TRUE">
+					<Tool
+						Name="VCCLCompilerTool"
+						Optimization="0"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+						BasicRuntimeChecks="3"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="demosmoothersamplesource.h">
+				<FileConfiguration
+					Name="Release|Win32"
+					ExcludedFromBuild="TRUE">
+					<Tool
+						Name="VCCustomBuildTool"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|Win32"
+					ExcludedFromBuild="TRUE">
+					<Tool
+						Name="VCCustomBuildTool"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="demosmoothersamplesource.txt">
+			</File>
+		</Filter>
+		<Filter
+			Name="Resource Files"
+			Filter="ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe">
+		</Filter>
+		<File
+			RelativePath="..\..\lib\public\tier0.lib">
+		</File>
+		<File
+			RelativePath="..\..\lib\public\tier1.lib">
+		</File>
+		<File
+			RelativePath="..\..\lib\public\tier1.lib">
+		</File>
+		<File
+			RelativePath="..\..\lib\public\tier2.lib">
+		</File>
+		<File
+			RelativePath="..\..\lib\public\tier2.lib">
+		</File>
+		<File
+			RelativePath="..\..\lib\public\vstdlib.lib">
+		</File>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>

utils/demoinfo/demosmoothersamplesource.h

@@ -0,0 +1,233 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Sample Source Code for "demo smoothing" tool in the engine.  This could be ported into the client .dll
+//  pretty easily -- ywb
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef CL_DEMOSMOOTHERPANEL_H
+#define CL_DEMOSMOOTHERPANEL_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include <vgui_controls/Frame.h>
+
+namespace vgui
+{
+class Button;
+class Label;
+class ListPanel;
+class IScheme;
+};
+
+#include "demofile/demoformat.h"
+#include "demofile.h"
+
+struct demodirectory_t;
+class CSmoothingTypeButton;
+class CFixEdgeButton;
+
+typedef float (*EASEFUNC)( float t );
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+class CDemoSmootherPanel : public vgui::Frame
+{
+	DECLARE_CLASS_SIMPLE( CDemoSmootherPanel, vgui::Frame );
+
+public:
+	CDemoSmootherPanel( vgui::Panel *parent );
+	~CDemoSmootherPanel();
+
+	virtual void OnTick();
+
+	// Command issued
+	virtual void OnCommand(const char *command);
+
+	void		OnRefresh();
+
+	virtual bool		OverrideView( democmdinfo_t& info, int tick );
+
+	virtual void	ApplySchemeSettings( vgui::IScheme *pScheme );
+
+	virtual void	DrawDebuggingInfo(  int frame, float elapsed );
+
+
+protected:
+
+	bool		CanEdit();
+
+	void		Reset( void );
+
+	demosmoothing_t *GetCurrent( void );
+
+	void		DrawSmoothingSample( bool original, bool processed, int samplenumber, demosmoothing_t *sample, demosmoothing_t *next );
+	void		DrawTargetSpline( void );
+	void		DrawKeySpline( void );
+	int			GetTickForFrame( int frame );
+	int			GetFrameForTick( int tick );
+	bool		GetInterpolatedViewPoint( Vector& origin, QAngle& angles );
+	bool		GetInterpolatedOriginAndAngles( bool readonly, Vector& origin, QAngle& angles );
+
+	void		DrawLegend( int startframe, int endframe );
+
+	void		OnRevert();
+	void		OnPreview( bool original );
+	void		OnSave();
+	void		OnReload();
+	void		OnSelect();
+	void		OnTogglePause();
+	void		OnStep( bool forward );
+	void		OnGotoFrame();
+
+	void		OnToggleKeyFrame( void );
+	void		OnToggleLookTarget( void );
+
+	void		OnNextKey();
+	void		OnPrevKey();
+	void		OnNextTarget();
+	void		OnPrevTarget();
+
+	void		OnRevertPoint( void );
+
+	void		PopulateMenuList();
+	int			GetStartFrame();
+	int			GetEndFrame();
+
+	void		OnSaveKey();
+	void		OnSetView();
+
+	void		OnSmoothEdges( bool left, bool right );
+
+	void		PerformLinearInterpolatedAngleSmoothing( int startframe, int endframe );
+
+	void		OnSmoothSelectionAngles( void );
+	void		OnSmoothSelectionOrigin( void );
+	void		OnLinearInterpolateAnglesBasedOnEndpoints( void );
+	void		OnLinearInterpolateOriginBasedOnEndpoints( void );
+	void		OnSplineSampleOrigin( void );
+	void		OnSplineSampleAngles( void );
+	void		OnLookAtPoints( bool spline );
+	void		OnSetKeys(float interval);
+
+	void		OnOriginEaseCurve( EASEFUNC easefunc );
+
+	void		SetLastFrame( bool jumptotarget, int frame );
+
+	void		AddSamplePoints( bool usetarget, bool includeboundaries, CUtlVector< demosmoothing_t * >& points, int start, int end );
+	demosmoothing_t *GetBoundedSample(  CUtlVector< demosmoothing_t * >& points, int sample );
+	void		FindSpanningPoints( int tick, CUtlVector< demosmoothing_t * >& points, int& prev, int& next );
+
+	// Undo/Redo
+	void				Undo( void );
+	void				Redo( void );
+
+	// Do push before changes
+	void				PushUndo( char *description );
+	// Do this push after changes, must match pushundo 1for1
+	void				PushRedo( char *description );
+
+	void				WipeUndo( void );
+	void				WipeRedo( void );
+
+	const char			*GetUndoDescription( void );
+	const char			*GetRedoDescription( void );
+
+	bool				CanUndo( void );
+	bool				CanRedo( void );
+
+	void				ParseSmoothingInfo( CDemoFile &demoFile, CUtlVector< demosmoothing_t >& smooth );
+	void				LoadSmoothingInfo( const char *filename, CSmoothingContext& smoothing );
+	void				ClearSmoothingInfo( CSmoothingContext& smoothing );
+	void				SaveSmoothingInfo( char const *filename, CSmoothingContext& smoothing );
+
+	CSmoothingTypeButton	*m_pType;
+
+	vgui::Button	*m_pRevert;
+	vgui::Button	*m_pOK;
+	vgui::Button	*m_pCancel;
+
+	vgui::Button	*m_pSave;
+	vgui::Button	*m_pReloadFromDisk;
+
+	vgui::TextEntry		*m_pStartFrame;
+	vgui::TextEntry		*m_pEndFrame;
+
+	vgui::Button		*m_pPreviewOriginal;
+	vgui::Button		*m_pPreviewProcessed;
+
+	vgui::CheckButton	*m_pBackOff;
+
+	vgui::Label			*m_pSelectionInfo;
+	vgui::CheckButton	*m_pShowAllSamples;
+	vgui::Button		*m_pSelectSamples;
+
+	vgui::Button		*m_pPauseResume;
+	vgui::Button		*m_pStepForward;
+	vgui::Button		*m_pStepBackward;
+
+	vgui::CheckButton	*m_pHideLegend;
+
+	vgui::CheckButton	*m_pHideOriginal;
+	vgui::CheckButton	*m_pHideProcessed;
+
+	vgui::Button		*m_pToggleKeyFrame;
+	vgui::Button		*m_pToggleLookTarget;
+	vgui::Button		*m_pRevertPoint;
+
+	vgui::Button		*m_pMoveCameraToPoint;
+
+	vgui::Button		*m_pUndo;
+	vgui::Button		*m_pRedo;
+
+	vgui::Button		*m_pNextKey;
+	vgui::Button		*m_pPrevKey;
+	vgui::Button		*m_pNextTarget;
+	vgui::Button		*m_pPrevTarget;
+
+	CFixEdgeButton		*m_pFixEdges;
+	vgui::TextEntry		*m_pFixEdgeFrames;
+
+	vgui::Button		*m_pProcessKey;
+
+	vgui::TextEntry		*m_pGotoFrame;
+	vgui::Button		*m_pGoto;
+
+	bool				m_bHasSelection;
+	int					m_nSelection[2];
+	int					m_iSelectionTicksSpan;
+
+	bool				m_bPreviewing;
+	bool				m_bPreviewOriginal;
+	int					m_iPreviewStartTick;
+	float				m_fPreviewCurrentTime;
+	int					m_nPreviewLastFrame;
+	bool				m_bPreviewPaused;
+
+	CSmoothingContext	m_Smoothing;
+
+	bool				m_bInputActive;
+	int					m_nOldCursor[2];
+
+
+	struct DemoSmoothUndo
+	{
+		CSmoothingContext *undo;
+		CSmoothingContext *redo;
+		char		 *udescription;
+		char		 *rdescription;
+	};
+
+	CUtlVector< DemoSmoothUndo * >	m_UndoStack;
+	int					m_nUndoLevel;
+	bool				m_bRedoPending;
+
+	bool				m_bDirty;
+
+	Vector				m_vecEyeOffset;
+};
+
+#endif // CL_DEMOSMOOTHERPANEL_H

utils/demoinfo/demosmoothersamplesource.txt

@@ -0,0 +1,22 @@
+NOTE 2/8/05:
+
+These files are copied directly out of the HL2 engine to use as a 
+starting point for writing your own vgui based "smoothing" tools for dem files.
+
+If you decide to use this, then my suggestion would be to copy these into a MOD in the client .dll and 
+clean up the #include's so that you can get it basically compiling and showing up.  
+
+It should be a "tool" just like the net_graph and other vgui
+based tools in the client .dll (use a ConVar to show/hide it maybe?)
+
+The sample source actually contains all of the reading/writing code for dem files which is also in deminfo.cpp.
+
+Note that CDemoFile should be changed to CToolDemoFile.
+
+As I recall, you might have to reimplement a "driving" interface like the one in the main demo UI panel.  I would just implement
+it as part of this UI, etc.
+
+If you have any questions or run into major snags, please let me know and I'll try to help out.
+
+Yahn Bernier
+yahn@valvesoftware.com

utils/demoinfo/tooldemofile.cpp

@@ -0,0 +1,295 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#include <utlbuffer.h>
+#include "tooldemofile.h"
+#include "filesystem.h"
+#include "demofile/demoformat.h"
+
+extern IBaseFileSystem *g_pFileSystem;
+
+//////////////////////////////////////////////////////////////////////
+// Construction/Destruction
+//////////////////////////////////////////////////////////////////////
+
+CToolDemoFile::CToolDemoFile()
+{
+	m_hDemoFile = FILESYSTEM_INVALID_HANDLE;
+}
+
+CToolDemoFile::~CToolDemoFile()
+{
+	if ( IsOpen() )
+	{
+		Close();
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CToolDemoFile::ReadSequenceInfo(int &nSeqNrIn, int &nSeqNrOut)
+{
+	Assert( m_hDemoFile != FILESYSTEM_INVALID_HANDLE );
+
+	g_pFileSystem->Read( &nSeqNrIn, sizeof(int), m_hDemoFile );
+	g_pFileSystem->Read( &nSeqNrOut, sizeof(int), m_hDemoFile );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CToolDemoFile::ReadCmdInfo( democmdinfo_t& info )
+{
+	Assert( m_hDemoFile != FILESYSTEM_INVALID_HANDLE );
+	g_pFileSystem->Read( &info, sizeof( democmdinfo_t ), m_hDemoFile );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : cmd - 
+//			dt - 
+//			frame - 
+//-----------------------------------------------------------------------------
+void CToolDemoFile::ReadCmdHeader( unsigned char& cmd, int& tick )
+{
+	Assert( m_hDemoFile != FILESYSTEM_INVALID_HANDLE );
+
+	// Read the command
+	int r = g_pFileSystem->Read ( &cmd, sizeof(byte), m_hDemoFile );
+	
+	if ( r <=0 )
+	{
+		Warning("Missing end tag in demo file.\n");
+		cmd = dem_stop;
+		return;
+	}
+
+	Assert( cmd >= 1 && cmd <= dem_lastcmd );
+
+	// Read the timestamp
+	g_pFileSystem->Read ( &tick, sizeof(int), m_hDemoFile );
+	
+	tick = LittleDWord( tick );
+}
+
+const char *CToolDemoFile::ReadConsoleCommand()
+{
+	static char cmdstring[1024];
+	
+	ReadRawData( cmdstring, sizeof(cmdstring) );
+
+	return cmdstring;
+}
+
+unsigned int CToolDemoFile::GetCurPos()
+{
+	if ( m_hDemoFile == FILESYSTEM_INVALID_HANDLE )
+		return 0;
+
+	return g_pFileSystem->Tell( m_hDemoFile );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : expected_length - 
+//			&demofile - 
+//-----------------------------------------------------------------------------
+int CToolDemoFile::ReadNetworkDataTables( CUtlBuffer *buf )
+{
+	Assert( m_hDemoFile != FILESYSTEM_INVALID_HANDLE );
+	char data[ 1024 ];
+	int length;
+
+	g_pFileSystem->Read( &length, sizeof( int ), m_hDemoFile );
+
+	while( length > 0 )
+	{
+		int chunk = min( length, 1024 );
+		g_pFileSystem->Read( data, chunk, m_hDemoFile );
+		length -= chunk;
+
+		if ( buf )
+		{
+			buf->Put( data, chunk );
+		}
+	}
+
+	return length;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : discard - 
+//-----------------------------------------------------------------------------
+int CToolDemoFile::ReadUserCmd( char *buffer, int &size )
+{
+	Assert( m_hDemoFile != FILESYSTEM_INVALID_HANDLE );
+
+	int outgoing_sequence;
+	
+	g_pFileSystem->Read( &outgoing_sequence, sizeof( int ), m_hDemoFile );
+	
+	size = ReadRawData( buffer, size );
+
+	return outgoing_sequence;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Rewind from the current spot by the time stamp, byte code and frame counter offsets
+//-----------------------------------------------------------------------------
+void CToolDemoFile::SeekTo( int position )
+{
+	Assert( m_hDemoFile != FILESYSTEM_INVALID_HANDLE );
+	g_pFileSystem->Seek( m_hDemoFile, position, FILESYSTEM_SEEK_HEAD );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Output : Returns true on success, false on failure.
+//-----------------------------------------------------------------------------
+int CToolDemoFile::ReadRawData( char *buffer, int length )
+{
+	Assert( m_hDemoFile != FILESYSTEM_INVALID_HANDLE );
+	
+	int size;
+	
+	// read length of data block
+	g_pFileSystem->Read( &size, sizeof( int ), m_hDemoFile );
+
+	if ( buffer && (length < size) )
+	{
+		DevMsg("CToolDemoFile::ReadRawData: buffe overflow (%i).\n", size );
+		return -1;
+	}
+
+	if ( buffer )
+	{
+		if ( length < size )
+		{
+			// given buffer is too small
+			DevMsg("CToolDemoFile::ReadRawData: buffe overflow (%i).\n", size );
+			g_pFileSystem->Seek( m_hDemoFile, size, FILESYSTEM_SEEK_CURRENT );
+			size = -1;
+		}
+		else
+		{
+			// read data into buffer
+			int r = g_pFileSystem->Read( buffer, size, m_hDemoFile );
+			if ( r != size )
+			{
+				Warning( "Error reading demo message data.\n");
+				return -1;
+			}
+		}
+	}
+	else
+	{
+		// just skip it
+		g_pFileSystem->Seek( m_hDemoFile, size, FILESYSTEM_SEEK_CURRENT );
+	}
+
+	return size;
+}
+
+demoheader_t *CToolDemoFile::ReadDemoHeader()
+{
+	if ( m_hDemoFile == FILESYSTEM_INVALID_HANDLE )
+		return NULL;	// file not open
+	
+	// goto file start
+	g_pFileSystem->Seek(m_hDemoFile, 0, FILESYSTEM_SEEK_HEAD);
+
+	Q_memset( &m_DemoHeader, 0, sizeof(m_DemoHeader) );
+
+	int r = g_pFileSystem->Read( &m_DemoHeader, sizeof(demoheader_t), m_hDemoFile );
+
+	if ( r != sizeof(demoheader_t) )
+		return NULL;  // reading failed
+
+	if ( Q_strcmp ( m_DemoHeader.demofilestamp, DEMO_HEADER_ID ) )
+	{
+		Warning( "%s has invalid demo header ID.\n", m_szFileName );
+		return NULL;
+	}
+
+	/*
+// The current network protocol version.  Changing this makes clients and servers incompatible
+#define PROTOCOL_VERSION    7
+
+	if ( m_DemoHeader.networkprotocol != PROTOCOL_VERSION )
+	{
+		Warning ("ERROR: demo network protocol %i outdated, engine version is %i \n", 
+			m_DemoHeader.networkprotocol, PROTOCOL_VERSION );
+
+		return NULL;
+	}
+	*/
+
+	if ( m_DemoHeader.demoprotocol != DEMO_PROTOCOL )
+	{
+		Warning ("ERROR: demo file protocol %i outdated, engine version is %i \n", 
+			m_DemoHeader.demoprotocol, DEMO_PROTOCOL );
+
+		return NULL;
+	}
+
+	return &m_DemoHeader;
+}
+
+bool CToolDemoFile::Open(const char *name, bool bReadOnly)
+{
+	if ( m_hDemoFile != FILESYSTEM_INVALID_HANDLE )
+	{
+		Warning ("CToolDemoFile::Open: file already open.\n");
+		return false;
+	}
+
+	m_szFileName[0] = 0;  // clear name
+	Q_memset( &m_DemoHeader, 0, sizeof(m_DemoHeader) ); // and demo header
+
+	if ( bReadOnly )
+	{
+		// open existing file for reading only
+		m_hDemoFile = g_pFileSystem->Open (name, "rb", "GAME" );
+	}
+	else
+	{
+		// create new file for writing only
+		m_hDemoFile = g_pFileSystem->Open (name, "wb", "GAME" );
+	}
+
+	if ( m_hDemoFile == FILESYSTEM_INVALID_HANDLE )
+	{
+		Warning ("CToolDemoFile::Open: couldn't open file %s for %s.\n", 
+			name, bReadOnly?"reading":"writing" );
+		return false;
+	}
+
+	Q_strncpy( m_szFileName, name, sizeof(m_szFileName) );
+
+	return true;
+}
+
+bool CToolDemoFile::IsOpen()
+{
+	return m_hDemoFile != FILESYSTEM_INVALID_HANDLE;
+}
+
+void CToolDemoFile::Close()
+{
+	if ( m_hDemoFile != FILESYSTEM_INVALID_HANDLE )
+	{
+		g_pFileSystem->Close(m_hDemoFile);
+		m_hDemoFile = FILESYSTEM_INVALID_HANDLE;
+	}
+}
+
+int CToolDemoFile::GetSize()
+{
+	return g_pFileSystem->Size( m_hDemoFile );
+}
+

utils/demoinfo/tooldemofile.h

@@ -0,0 +1,58 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================
+
+#ifndef TOOLDEMOFILE_H
+#define TOOLDEMOFILE_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "mathlib/vector.h"
+#include "tier0/platform.h"
+#include "utlvector.h"
+#include "filesystem.h"
+#include "demofile/demoformat.h"
+
+class CUtlBuffer;
+
+class CToolDemoFile  
+{
+public:
+	CToolDemoFile();
+	virtual ~CToolDemoFile();
+
+	bool	Open(const char *name, bool bReadOnly);
+	bool	IsOpen();
+	void	Close();
+
+	void	SeekTo( int position );
+	unsigned int GetCurPos();
+	int GetSize();
+
+	int		ReadRawData( char *buffer, int length );
+
+	void	ReadSequenceInfo(int &nSeqNrIn, int &nSeqNrOutAck);
+
+	void	ReadCmdInfo( democmdinfo_t& info );
+
+	void	ReadCmdHeader( unsigned char& cmd, int& tick );
+	
+	const char *ReadConsoleCommand( void );
+
+	int		ReadNetworkDataTables( CUtlBuffer *buf ); // if buf is NULL, skip it
+	
+	int		ReadUserCmd( char *buffer, int &size );
+
+	demoheader_t *ReadDemoHeader();
+
+
+public:
+	FileHandle_t	m_hDemoFile;	// filesystem handle
+	char			m_szFileName[MAX_PATH];	//name of current demo file
+	demoheader_t    m_DemoHeader;  //general demo info
+};
+
+#endif // TOOLDEMOFILE_H