various commits from SM4 SVN, courtesy of Glenn and Vyhd.

src/ActorFrame.h

@@ -37,9 +37,7 @@ public:
 	void DeleteChildrenWhenDone( bool bDelete=true ) { m_bDeleteChildren = bDelete; }
 	void DeleteAllChildren();
 
-	//
 	// Commands
-	//
 	virtual void PushSelf( lua_State *L );
 	void PushChildrenTable( lua_State *L );
 	void PlayCommandOnChildren( const RString &sCommandName, const LuaReference *pParamTable = NULL );
@@ -75,7 +73,7 @@ public:
 
 	virtual void SetPropagateCommands( bool b );
 
-	/* Amount of time until all tweens (and all children's tweens) have stopped: */
+	// Amount of time until all tweens (and all children's tweens) have stopped:
 	virtual float GetTweenTimeLeft() const;
 
 	virtual void HandleMessage( const Message &msg );

src/ArrowEffects.h

@@ -41,8 +41,7 @@ public:
 	// fYPos (in the case of EFFECT_DRUNK).
 	static float GetXPos( const PlayerState* pPlayerState, int iCol, float fYOffset );
 
-	// Shift a note's fXPos by this amount depending
+	// Shift a note's fXPos by this amount depending (on what? -aj)
-	//
 	static float GetXOffset( const PlayerState* pPlayerState, float fMidiNote );
 
 	// Z position; normally 0. Only visible in perspective modes.

src/Game.h

@@ -9,24 +9,23 @@
 struct lua_State;
 class Style;
 
+// PrimaryMenuButton and SecondaryMenuButton are used to support using
+// DeviceInputs that only  navigate the menus.
 // 
-// PrimaryMenuButton and SecondaryMenuButton are used to support using DeviceInputs that only 
+// A button being a primary menu button means that this GameButton will generate
-// navigate the menus.
+// a the corresponding MenuInput IF AND ONLY IF the GameButton corresponding to
+// the pimary input is not mapped.
 //
-// A button being a primary menu button means that this GameButton will generate a the
+// Example 1: A user is using an arcade machine as their controller. Most
-// corresponding MenuInput IF AND ONLY IF the GameButton corresponding to the pimary input 
+// machines have MenuLeft, MenuStart, and MenuRight buttons on the cabinet, so
-// is not mapped.
+// they should be used to navigate menus. The user will map these DeviceInputs
-//
+// to the GameButtons "MenuLeft (optional)", "MenuStart", and "MenuRight (optional)".
-// Example 1:  A user is using an arcade machine as their controller.  Most machines have
-// MenuLeft, MenuStart, and MenuRight buttons on the cabinet, so they should be used to navigate menus.
-// The user will map these DeviceInputs to the GameButtons "MenuLeft (optional)", "MenuStart", and 
-// "MenuRight (optional)".
-//
-// Example 2:  A user is using PlayStation dance pads to play.  These controllers don't have dedicated
-// DeviceInputs for MenuLeft and MenuRight.  The user maps Up, Down, Left, and Right as normal.
-// Since the Left and Right GameButtons have the flag FLAG_SECONDARY_MENU_*, they will function as 
-// MenuLeft and MenuRight as long as "MenuLeft (optional)" and "MenuRight (optional)" are not mapped.
 //
+// Example 2:  A user is using PlayStation dance pads to play. These controllers
+// don't have dedicated DeviceInputs for MenuLeft and MenuRight. The user maps 
+// Up, Down, Left, and Right as normal. Since the Left and Right GameButtons 
+// have the flag FLAG_SECONDARY_MENU_*, they will function as MenuLeft and
+// MenuRight as long as "MenuLeft (optional)" and "MenuRight (optional)" are not mapped.
 
 class Game
 {
@@ -53,9 +52,7 @@ public:
 	TapNoteScore		m_mapW4To;
 	TapNoteScore		m_mapW5To;
 
-	//
 	// Lua
-	//
 	void PushSelf( lua_State *L );
 };
 

src/GameConstantsAndTypes.h

@@ -54,6 +54,7 @@ enum StepsType
 	StepsType_dance_double,
 	StepsType_dance_couple,
 	StepsType_dance_solo,
+	//StepsType_dance_three,
 	StepsType_dance_routine,
 	StepsType_pump_single,
 	StepsType_pump_halfdouble,

src/GameManager.cpp

@@ -48,6 +48,7 @@ static const StepsTypeInfo g_StepsTypeInfos[] = {
 	{ "dance-double",	8,	true,	StepsTypeCategory_Double },
 	{ "dance-couple",	8,	true,	StepsTypeCategory_Couple },
 	{ "dance-solo",		6,	true,	StepsTypeCategory_Single },
+	//{ "dance-three",		3,	true,	StepsTypeCategory_Single },
 	{ "dance-routine",	8,	false,	StepsTypeCategory_Routine },
 	// pump
 	{ "pump-single",	5,	true,	StepsTypeCategory_Single },
@@ -323,6 +324,41 @@ static const Style g_Style_Dance_Solo =
 };
 
 // todo: "easy solo" or whatever the proper name for the 3 panel \|/ mode is.
+/*
+static const Style g_Style_Dance_Three =
+{	// STYLE_DANCE_THREE
+	true,				// m_bUsedForGameplay
+	true,				// m_bUsedForEdit
+	false,				// m_bUsedForDemonstration
+	false,				// m_bUsedForHowToPlay
+	"three",				// m_szName
+	StepsType_dance_three,		// m_StepsType
+	StyleType_OnePlayerOneSide,		// m_StyleType
+	3,				// m_iColsPerPlayer
+	{	// m_ColumnInfo[NUM_PLAYERS][MAX_COLS_PER_PLAYER];
+		{	// PLAYER_1
+			{ TRACK_1,	-DANCE_COL_SPACING*1.0f, NULL },
+			{ TRACK_2,	+DANCE_COL_SPACING*0.0f, NULL },
+			{ TRACK_3,	+DANCE_COL_SPACING*1.0f, NULL },
+		},
+		{	// PLAYER_2
+			{ TRACK_1,	-DANCE_COL_SPACING*1.0f, NULL },
+			{ TRACK_2,	+DANCE_COL_SPACING*0.0f, NULL },
+			{ TRACK_3,	+DANCE_COL_SPACING*1.0f, NULL },
+		},
+	},
+	{	// m_iInputColumn[NUM_GameController][NUM_GameButton]
+		{ 0, 1, 2, Style::END_MAPPING },
+		{ 0, 1, 2, Style::END_MAPPING }
+	},
+	{	// m_iColumnDrawOrder[MAX_COLS_PER_PLAYER];
+		0,1,2
+	},
+	false, // m_bNeedsZoomOutWith2Players
+	false, // m_bCanUseBeginnerHelper
+	false, // m_bLockDifficulties
+};
+*/
 
 static const Style g_Style_Dance_Couple_Edit =
 {	// STYLE_DANCE_EDIT_COUPLE
@@ -458,6 +494,7 @@ static const Style *g_apGame_Dance_Styles[] =
 	&g_Style_Dance_Double,
 	&g_Style_Dance_Couple,
 	&g_Style_Dance_Solo,
+	//&g_Style_Dance_Three,
 	&g_Style_Dance_Couple_Edit,
 	&g_Style_Dance_Routine,
 	NULL
@@ -770,7 +807,7 @@ static const Style g_Style_Pump_Couple_Edit =
 };
 
 static const Style g_Style_Pump_Routine =
-{	// STYLE_DANCE_ROUTINE
+{	// STYLE_PUMP_ROUTINE
 	true,				// m_bUsedForGameplay
 	true,				// m_bUsedForEdit
 	false,				// m_bUsedForDemonstration

src/GameState.cpp

@@ -38,7 +38,6 @@
 #include "UnlockManager.h"
 #include "ScreenManager.h"
 #include "Screen.h"
-#include "GameConstantsAndTypes.h"
 
 #include <ctime>
 #include <set>
@@ -2162,35 +2161,8 @@ public:
 	}
 	static int GetCurrentSteps( T* p, lua_State *L )
 	{
-		// XXX: this will crash in certain situations, but if the PlayerNumber
-		// is checked for, difficulty displays will break... what to do? -aj
 		PlayerNumber pn = Enum::Check<PlayerNumber>(L, 1);
-		Steps* pSteps;
+		Steps *pSteps = p->m_pCurSteps[pn];
-
-		if( p->m_pCurSong.Get() != NULL )
-		{
-			// try our preferred steps type and difficulty first
-			pSteps = SongUtil::GetOneSteps( p->m_pCurSong.Get(), GAMESTATE->m_PreferredStepsType, GAMESTATE->m_PreferredDifficulty[pn] );
-
-			// no matches for preferred stepstype? try the current style
-			if( pSteps == NULL )
-				pSteps = SongUtil::GetOneSteps( p->m_pCurSong.Get(), GAMESTATE->GetCurrentStyle()->m_StepsType, GAMESTATE->m_PreferredDifficulty[pn] );
-
-			// nothing found with preferred difficulty? try with closest.
-			// closest seems to return 'easy' when prefrred difficulty is 'medium'
-			// even if the song has medium steps?
-			if(	pSteps == NULL )
-				pSteps = SongUtil::GetOneSteps( p->m_pCurSong.Get(), GAMESTATE->GetCurrentStyle()->m_StepsType, GAMESTATE->GetClosestShownDifficulty(pn) );
-		}
-		else
-		{
-			pSteps = p->m_pCurSteps[pn];
-		}
-
-		// if you're on the music select and change song, the current steps are not
-		// updated correctly/in time for CurrentSongChangedMessageCommand 
-		// (as such the returned steps are that of the previous song)
-
 		if( pSteps ) { pSteps->PushSelf(L); }
 		else		 { lua_pushnil(L); }
 		return 1;

src/Makefile.am

@@ -370,9 +370,11 @@ lua-5.1/src/lundump.h lua-5.1/src/lvm.h lua-5.1/src/lzio.h
 RageFile = \
 RageFileBasic.cpp RageFileBasic.h \
 RageFile.cpp RageFile.h RageFileDriver.cpp RageFileDriver.h RageFileManager.cpp RageFileManager.h \
+RageFileManager_ReadAhead.cpp RageFileManager_ReadAhead.h \
 RageFileDriverDirect.cpp RageFileDriverDirect.h RageFileDriverDirectHelpers.cpp RageFileDriverDirectHelpers.h \
 RageFileDriverMemory.cpp RageFileDriverMemory.h RageFileDriverZip.cpp RageFileDriverZip.h \
 RageFileDriverDeflate.cpp RageFileDriverDeflate.h \
+RageFileDriverReadAhead.cpp RageFileDriverReadAhead.h \
 RageFileDriverSlice.cpp RageFileDriverSlice.h \
 RageFileDriverTimeout.cpp RageFileDriverTimeout.h
 

src/NoteDataUtil.cpp

@@ -439,6 +439,12 @@ void NoteDataUtil::SplitCompositeNoteData( const NoteData &in, vector<NoteData>
 		return;
 	}
 
+	FOREACH_PlayerNumber( pn )
+	{
+		out.push_back( NoteData() );
+		out.back().SetNumTracks( in.GetNumTracks() );
+	}
+
 	for( int t = 0; t < in.GetNumTracks(); ++t )
 	{
 		for( NoteData::const_iterator iter = in.begin(t); iter != in.end(t); ++iter )
@@ -447,12 +453,7 @@ void NoteDataUtil::SplitCompositeNoteData( const NoteData &in, vector<NoteData>
 			TapNote tn = iter->second;
 			unsigned index = int( tn.pn );
 
-			DEBUG_ASSERT( index < NUM_PlayerNumber );
+			ASSERT( index < NUM_PlayerNumber );
-			while( out.size() <= index )
-			{
-				out.push_back( NoteData() );
-				out.back().SetNumTracks( in.GetNumTracks() );
-			}
 			tn.pn = PLAYER_INVALID;
 			out[index].SetTapNote( t, row, tn );
 		}

src/NoteDisplay.cpp

@@ -22,12 +22,13 @@ static const char *NotePartNames[] = {
 	"TapLift",
 	"TapFake",
 	"HoldHead",
+	"HoldTail",
 	"HoldTopCap",
 	"HoldBody",
 	"HoldBottomCap",
-	"HoldTail",
 };
 XToString( NotePart );
+LuaXType( NotePart );
 
 static bool IsVectorZero( const RageVector2 &v )
 {
@@ -58,7 +59,6 @@ struct NoteMetricCache_t
 	bool m_bTopHoldAnchorWhenReverse;
 	bool m_bHoldActiveIsAddLayer;
 
-
 	void Load( const RString &sButton );
 } *NoteMetricCache;
 
@@ -735,6 +735,7 @@ void NoteDisplay::DrawTap( const TapNote& tn, int iCol, float fBeat, bool bOnSam
 	}
 
 	const float fYOffset = ArrowEffects::GetYOffset( m_pPlayerState, iCol, fBeat );
+	// this is the line that forces the (1,1,1,x) part of the noteskin diffuse -aj
 	DrawActor( tn, pActor, part, iCol, fYOffset, fBeat, bIsAddition, fPercentFadeToFail, fReverseOffsetPixels, 1.0f, fDrawDistanceAfterTargetsPixels, fDrawDistanceBeforeTargetsPixels, fFadeInPercentOfDrawFar );
 
 	if( tn.type == TapNote::attack )

src/NoteField.cpp

@@ -28,6 +28,9 @@ static ThemeMetric<float> BAR_4TH_ALPHA( "NoteField", "Bar4thAlpha" );
 static ThemeMetric<float> BAR_8TH_ALPHA( "NoteField", "Bar8thAlpha" );
 static ThemeMetric<float> BAR_16TH_ALPHA( "NoteField", "Bar16thAlpha" );
 
+static RString RoutineNoteSkinName( size_t i ) { return ssprintf("RoutineNoteSkinP%i",int(i+1)); }
+static ThemeMetric1D<RString> ROUTINE_NOTESKIN( "NoteField", RoutineNoteSkinName, NUM_PLAYERS );
+
 NoteField::NoteField()
 {
 	m_pNoteData = NULL;
@@ -109,6 +112,14 @@ void NoteField::CacheAllUsedNoteSkins()
 	/* Cache all note skins that we might need for the whole song, course or battle
 	 * play, so we don't have to load them later (such as between course songs). */
 	vector<RString> asSkins;
+
+	// If we're in Routine mode, apply our per-player noteskins.
+	if( GAMESTATE->GetCurrentStyle()->m_StyleType == StyleType_TwoPlayersSharedSides )
+	{
+		FOREACH_EnabledPlayer( pn )
+			GAMESTATE->ApplyStageModifiers( pn, ROUTINE_NOTESKIN.GetValue(pn) );
+	}
+
 	GAMESTATE->GetAllUsedNoteSkins( asSkins );
 	asSkins.push_back( m_pPlayerState->m_PlayerOptions.GetStage().m_sNoteSkin );
 

src/PlayerStageStats.cpp

@@ -168,24 +168,24 @@ Grade PlayerStageStats::GetGrade() const
 	{
 		int iTapScoreValue = ScoreKeeperNormal::TapNoteScoreToGradePoints( tns, bIsBeginner );
 		fActual += m_iTapNoteScores[tns] * iTapScoreValue;
-		LOG->Trace( "GetGrade actual: %i * %i", m_iTapNoteScores[tns], iTapScoreValue );
+		//LOG->Trace( "GetGrade actual: %i * %i", m_iTapNoteScores[tns], iTapScoreValue );
 	}
 
 	FOREACH_ENUM( HoldNoteScore, hns )
 	{
 		int iHoldScoreValue = ScoreKeeperNormal::HoldNoteScoreToGradePoints( hns, bIsBeginner );
 		fActual += m_iHoldNoteScores[hns] * iHoldScoreValue;
-		LOG->Trace( "GetGrade actual: %i * %i", m_iHoldNoteScores[hns], iHoldScoreValue );
+		//LOG->Trace( "GetGrade actual: %i * %i", m_iHoldNoteScores[hns], iHoldScoreValue );
 	}
 
-	LOG->Trace( "GetGrade: fActual: %f, fPossible: %d", fActual, m_iPossibleGradePoints );
+	//LOG->Trace( "GetGrade: fActual: %f, fPossible: %d", fActual, m_iPossibleGradePoints );
 
 
 	float fPercent = (m_iPossibleGradePoints == 0) ? 0 : fActual / m_iPossibleGradePoints;
 
 	Grade grade = GetGradeFromPercent( fPercent );
 
-	LOG->Trace( "GetGrade: Grade: %s, %i", GradeToString(grade).c_str(), GRADE_TIER02_IS_ALL_W2S );
+	//LOG->Trace( "GetGrade: Grade: %s, %i", GradeToString(grade).c_str(), GRADE_TIER02_IS_ALL_W2S );
 	if( GRADE_TIER02_IS_ALL_W2S )
 	{
 		if( FullComboOfScore(TNS_W1) )

src/Profile.cpp

@@ -1878,9 +1878,7 @@ void Profile::MoveBackupToDir( RString sFromDir, RString sToDir )
 RString Profile::MakeUniqueFileNameNoExtension( RString sDir, RString sFileNameBeginning )
 {
 	FILEMAN->FlushDirCache( sDir );
-	//
 	// Find a file name for the screenshot
-	//
 	vector<RString> files;
 	GetDirListing( sDir + sFileNameBeginning+"*", files, false, false );
 	sort( files.begin(), files.end() );

src/RageFile.cpp

@@ -166,6 +166,12 @@ int RageFile::GetFileSize() const
 	return m_File->GetFileSize();
 }
 
+int RageFile::GetFD()
+{
+	ASSERT_READ;
+	return m_File->GetFD();
+}
+
 int RageFile::Read( RString &buffer, int bytes )
 {
 	ASSERT_READ;

src/RageFile.h

@@ -51,6 +51,7 @@ public:
 	int Tell() const;
 	int Seek( int offset );
 	int GetFileSize() const;
+	int GetFD();
 
 	/* Raw I/O: */
 	int Read( void *buffer, size_t bytes );

src/RageFileBasic.h

@@ -53,6 +53,11 @@ public:
 	virtual bool GetCRC32( uint32_t *iRet ) = 0;
 
 	virtual int GetFileSize() const = 0;
+
+	/* If this file is backed by a file descriptor, return it. This is valid even
+	 * if the file is being filtered or decompressed. If the file has no
+	 * associated file descriptor, return -1. */
+	virtual int GetFD() = 0;
 };
 
 class RageFileObj: public RageFileBasic
@@ -88,6 +93,7 @@ public:
 	bool GetCRC32( uint32_t *iRet );
 
 	virtual int GetFileSize() const = 0;
+	virtual int GetFD() { return -1; }
 	virtual RString GetDisplayPath() const { return RString(); }
 	virtual RageFileBasic *Copy() const { FAIL_M( "Copying unimplemented" ); }
 

src/RageFileDriverDeflate.h

@@ -19,6 +19,7 @@ public:
 	int WriteInternal( const void *pBuffer, size_t iBytes ) { SetError( "Not implemented" ); return -1; }
 	int SeekInternal( int iOffset );
 	int GetFileSize() const { return m_iUncompressedSize; }
+	int GetFD() { return m_pFile->GetFD(); }
 	RageFileObjInflate *Copy() const;
 
 	void DeleteFileWhenFinished() { m_bFileOwned = true; }

src/RageFileDriverDirect.cpp

@@ -50,6 +50,7 @@ public:
 	virtual RageFileObjDirect *Copy() const;
 	virtual RString GetDisplayPath() const { return m_sPath; }
 	virtual int GetFileSize() const;
+	virtual int GetFD();
 
 private:
 	bool FinalFlush();
@@ -469,6 +470,11 @@ int RageFileObjDirect::GetFileSize() const
 	return iRet;
 }
 
+int RageFileObjDirect::GetFD()
+{
+	return m_iFD;
+}
+
 /*
  * Copyright (c) 2003-2004 Glenn Maynard, Chris Danford
  * All rights reserved.

src/RageFileDriverReadAhead.cpp

@@ -0,0 +1,191 @@
+/*
+ * When streaming files in gameplay, we need to be able to access files without blocking.
+ * If we read data and it's not currently in the OS's read-ahead cache, we'll block while
+ * it reads, which will usually take 10-20ms and cause a frame skip.
+ *
+ * One common case of this is playing a background movie.  We'll open the file when the
+ * screen loads, but it may not be played for over a minute, during which time we'll be
+ * streaming from other movies.  When we come back, the file may not have any read-ahead
+ * waiting for us.
+ *
+ * Linux provides two calls that can help here:
+ *
+ * posix_readahead; this hints the OS that we're streaming a file, so it doesn't need to
+ * preserve cache behind where we've read.  This reduces the chance of pushing other files
+ * out of cache.  However, this can also cause new skips; if we need to rewind a movie and
+ * start it over, the beginning will be out of the cache.
+ *
+ * readahead: this explicitly triggers a specific file read-ahead.  This blocks, so if we
+ * use this we need to do it in a thread.
+ *
+ * We work like this:
+ *
+ * - Persistantly cache the first N bytes of the file.
+ * - Open a worker thread for read-ahead, which is idle most of the time.
+ * - When we read from the first 128k of the file, take it directly out of our cache, and
+ *   seek the file past our cache.
+ * - When any data is read from the cached part of the file and readahead hasn't been performed,
+ *   trigger readahead() to be done in the worker thread, so data past our cache is ready when
+ *   we get there.
+ * - When any data is read outside of the cached part of the file, reset our state so we know
+ *   to do the readahead again the next time we're back at the start of the file.
+ *
+ * This means that reading should always be nonblocking, given these constraints:
+ * - We must consistently stream a file starting at the beginning, and don't seek to random points
+ *   in the file.
+ * - We read the file slowly enough that we don't overtake the read-ahead cache, which for most
+ *   streaming files shouldn't be a problem.
+ */
+
+#include "global.h"
+#include "RageFileDriverReadAhead.h"
+#include "RageLog.h"
+#include "RageUtil.h"
+#include "RageFileManager_ReadAhead.h"
+
+#include <fcntl.h>
+#include <cerrno>
+#if defined(WIN32)
+#include <io.h>
+#endif
+
+/* If GetFD() isn't supported on the underlying file, this filter won't do anything. */
+bool RageFileDriverReadAhead::FileSupported( RageFileBasic *pFile )
+{
+	return pFile->GetFD() != -1;
+}
+
+/* iReadAheadBytes is the number of bytes to cache at the start of the file, to serve data while
+ * the readahead is taking place.  iPostBufferReadAhead is the number of bytes to actually read ahead. */
+RageFileDriverReadAhead::RageFileDriverReadAhead( RageFileBasic *pFile, int iCacheBytes, int iPostBufferReadAhead )
+{
+	if( iPostBufferReadAhead == -1 )
+		iPostBufferReadAhead = iCacheBytes;
+
+	m_pFile = pFile;
+	m_iFilePos = pFile->Tell();
+	m_bFileOwned = false;
+	m_bReadAheadNeeded = true;
+	m_iPostBufferReadAhead = iPostBufferReadAhead;
+
+	FillBuffer( iCacheBytes );
+}
+
+RageFileDriverReadAhead::RageFileDriverReadAhead( const RageFileDriverReadAhead &cpy ):
+	RageFileObj(cpy)
+{
+	m_pFile = cpy.m_pFile->Copy();
+	m_sBuffer = cpy.m_sBuffer;
+	m_iFilePos = cpy.m_iFilePos;
+	m_bFileOwned = true;
+	m_iPostBufferReadAhead = cpy.m_iPostBufferReadAhead;
+	m_bReadAheadNeeded = cpy.m_bReadAheadNeeded;
+
+	RageFileManagerReadAhead::CacheHintStreaming( m_pFile );
+}
+
+RageFileDriverReadAhead::~RageFileDriverReadAhead()
+{
+	if( m_bFileOwned )
+		delete m_pFile;
+}
+
+RageFileDriverReadAhead *RageFileDriverReadAhead::Copy() const
+{
+	RageFileDriverReadAhead *pRet = new RageFileDriverReadAhead( *this );
+	return pRet;
+}
+
+void RageFileDriverReadAhead::FillBuffer( int iBytes )
+{
+	int iOldPos = m_pFile->Tell();
+	m_pFile->Seek( 0 );
+
+	m_sBuffer = "";
+	m_pFile->Read( m_sBuffer, iBytes );
+
+	/* Seek back to where we were.  If we're going back to the cached region, seek past it,
+	 * like SeekInternal does. */
+	if( iOldPos < (int) m_sBuffer.size() )
+		iOldPos = m_sBuffer.size();
+	m_pFile->Seek( iOldPos );
+
+	/* Now that we're done moving the file pointer around, set the file's read-ahead hint,
+	 * if supported. */
+	RageFileManagerReadAhead::CacheHintStreaming( m_pFile );
+}
+
+int RageFileDriverReadAhead::ReadInternal( void *pBuffer, size_t iBytes )
+{
+	/* If we're in the buffered area, and we havn't already done read-ahead, start it. */
+	if( m_bReadAheadNeeded && m_iFilePos < (int) m_sBuffer.size() )
+	{
+		RageFileManagerReadAhead::ReadAhead( m_pFile, m_iPostBufferReadAhead );
+
+		m_bReadAheadNeeded = false;
+	}
+	else if( !m_bReadAheadNeeded && m_iFilePos >= (int) m_sBuffer.size() )
+	{
+		/* Reset, so next time we rewind we'll read-ahead again. */
+		m_bReadAheadNeeded = true;
+	}
+
+	/* If we can serve data out of the buffer, use it. */
+	if( m_iFilePos < (int) m_sBuffer.size() )
+	{
+		size_t iFromBuffer = min( iBytes, m_sBuffer.size() - m_iFilePos );
+		memcpy( pBuffer, m_sBuffer.data() + m_iFilePos, iFromBuffer );
+		m_iFilePos += iFromBuffer;
+		return iFromBuffer;
+	}
+
+	/* Read out of the underlying file. */
+	int iRet = m_pFile->Read( pBuffer, iBytes );
+	if( iRet != -1 )
+		m_iFilePos += iRet;
+	return iRet;
+
+}
+
+int RageFileDriverReadAhead::SeekInternal( int iOffset )
+{
+	if( iOffset < (int) m_sBuffer.size() )
+	{
+		/* This assumes that seeking the file won't block.  This seems to be true in Linux, at least.
+		 * Seek the actual file to just past our buffer, so the RageFileManagerReadAhead::ReadAhead
+		 * call will read ahead from the correct position. */
+		m_pFile->Seek( m_sBuffer.size() );
+		m_iFilePos = iOffset;
+		return iOffset;
+	}
+
+	m_iFilePos = m_pFile->Seek( iOffset );
+	return m_iFilePos;
+}
+
+
+/*
+ * Copyright (c) 2010 Glenn Maynard
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, and/or sell copies of the Software, and to permit persons to
+ * whom the Software is furnished to do so, provided that the above
+ * copyright notice(s) and this permission notice appear in all copies of
+ * the Software and that both the above copyright notice(s) and this
+ * permission notice appear in supporting documentation.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+ * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
+ * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
+ * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+

src/RageFileDriverReadAhead.h

@@ -0,0 +1,69 @@
+/* RageFileDriverReadAhead - Read-ahead hinting for seamless rewinding. */
+
+#ifndef RAGE_FILE_DRIVER_READ_AHEAD_H
+#define RAGE_FILE_DRIVER_READ_AHEAD_H
+
+#include "RageFileBasic.h"
+
+class RageFileDriverReadAhead: public RageFileObj
+{
+public:
+	/* This filter can only be used on supported files; test before using. */
+	static bool FileSupported( RageFileBasic *pFile );
+
+	/* pFile will be freed if DeleteFileWhenFinished is called. */
+	RageFileDriverReadAhead( RageFileBasic *pFile, int iCacheBytes, int iPostBufferReadAhead = -1 );
+	RageFileDriverReadAhead( const RageFileDriverReadAhead &cpy );
+	~RageFileDriverReadAhead();
+	RageFileDriverReadAhead *Copy() const;
+
+	void DeleteFileWhenFinished() { m_bFileOwned = true; }
+
+	virtual RString GetError() const { return m_pFile->GetError(); }
+	virtual void ClearError()  { return m_pFile->ClearError(); }
+
+	int ReadInternal( void *pBuffer, size_t iBytes );
+	int WriteInternal( const void *pBuffer, size_t iBytes ) { return m_pFile->Write( pBuffer, iBytes ); }
+	int SeekInternal( int iOffset );
+	int GetFileSize() const { return m_pFile->GetFileSize(); }
+	int GetFD() { return m_pFile->GetFD(); }
+	int Tell() const { return m_iFilePos; }
+
+private:
+	void FillBuffer( int iBytes );
+
+	RageFileBasic *m_pFile;
+	int m_iFilePos;
+	bool m_bFileOwned;
+	RString m_sBuffer;
+	int m_iPostBufferReadAhead;
+	bool m_bReadAheadNeeded;
+};
+
+#endif
+
+/*
+ * Copyright (c) 2010 Glenn Maynard
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, and/or sell copies of the Software, and to permit persons to
+ * whom the Software is furnished to do so, provided that the above
+ * copyright notice(s) and this permission notice appear in all copies of
+ * the Software and that both the above copyright notice(s) and this
+ * permission notice appear in supporting documentation.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+ * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
+ * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
+ * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+

src/RageFileDriverSlice.h

@@ -20,6 +20,7 @@ public:
 	int WriteInternal( const void *pBuffer, size_t iBytes ) { SetError( "Not implemented" ); return -1; }
 	int SeekInternal( int iOffset );
 	int GetFileSize() const { return m_iFileSize; }
+	int GetFD() { return m_pFile->GetFD(); }
 
 private:
 	RageFileBasic *m_pFile;

src/RageFileDriverTimeout.cpp

@@ -54,6 +54,7 @@ enum ThreadRequest
 	REQ_OPEN,
 	REQ_CLOSE,
 	REQ_GET_FILE_SIZE,
+	REQ_GET_FD,
 	REQ_READ,
 	REQ_WRITE,
 	REQ_SEEK,
@@ -78,6 +79,7 @@ public:
 	RageFileBasic *Open( const RString &sPath, int iMode, int &iErr );
 	void Close( RageFileBasic *pFile );
 	int GetFileSize( RageFileBasic *&pFile );
+	int GetFD( RageFileBasic *&pFile );
 	int Seek( RageFileBasic *&pFile, int iPos, RString &sError );
 	int Read( RageFileBasic *&pFile, void *pBuf, int iSize, RString &sError );
 	int Write( RageFileBasic *&pFile, const void *pBuf, int iSize, RString &sError );
@@ -377,6 +379,34 @@ int ThreadedFileWorker::GetFileSize( RageFileBasic *&pFile )
 	return m_iResultRequest;
 }
 
+int ThreadedFileWorker::GetFD( RageFileBasic *&pFile )
+{
+	ASSERT( m_pChildDriver != NULL ); /* how did you get a file to begin with? */
+	
+	/* If we're currently in a timed-out state, fail. */
+	if( IsTimedOut() )
+	{
+		this->Close( pFile );
+		pFile = NULL;
+	}
+
+	if( pFile == NULL )
+		return -1;
+
+	m_pRequestFile = pFile;
+
+	if( !DoRequest(REQ_GET_FD) )
+	{
+		/* If we time out, we can no longer access pFile. */
+		pFile = NULL;
+		return -1;
+	}
+
+	m_pRequestFile = NULL;
+
+	return m_iResultRequest;
+}
+
 int ThreadedFileWorker::Seek( RageFileBasic *&pFile, int iPos, RString &sError )
 {
 	ASSERT( m_pChildDriver != NULL ); /* how did you get a file to begin with? */
@@ -692,6 +722,23 @@ public:
 		return m_iFileSize;
 	}
 
+	int GetFD()
+	{
+		RString sError;
+		int iRet = m_pWorker->GetFD( m_pFile );
+
+		if( m_pFile == NULL )
+		{
+			SetError( "Operation timed out" );
+			return -1;
+		}
+
+		if( iRet == -1 )
+			SetError( sError );
+
+		return iRet;
+	}
+
 	RageFileBasic *Copy() const
 	{
 		RString sError;

src/RageFileManager_ReadAhead.cpp

@@ -0,0 +1,174 @@
+#include "global.h"
+#include "RageFileManager_ReadAhead.h"
+#include "RageThreads.h"
+#include "RageLog.h"
+
+#include <fcntl.h>
+#include <cerrno>
+#if defined(WIN32)
+#include <io.h>
+#endif
+
+#if defined(HAVE_POSIX_FADVISE)
+void RageFileManagerReadAhead::Init() { }
+void RageFileManagerReadAhead::Shutdown() { }
+void RageFileManagerReadAhead::ReadAhead( RageFileBasic *pFile, int iBytes )
+{
+	int iFD = pFile->GetFD();
+	if( iFD == -1 )
+		return;
+
+	int iStart = lseek( iFD, 0, SEEK_CUR );
+	posix_fadvise( iFD, iStart, iBytes, POSIX_FADV_WILLNEED );
+}
+
+#else
+#if 0
+/* This doesn't currently work, because dup() locks the file position of the new FD with the old
+ * (which makes no sense at all), so it's not easy to read from a copy of the FD without
+ * interfering with the original. */
+class RageFileReadAheadThread
+{
+public:
+	RageFileReadAheadThread( int iFD, int iFrom, int iBytes )
+	{
+		m_iFD = iFD;
+		m_iFrom = iFrom;
+		m_iBytes = iBytes;
+		m_bFinished = false;
+
+		m_WorkerThread.SetName( "Read-ahead thread" );
+		m_WorkerThread.Create( StartWorkerMain, this );
+	}
+
+	~RageFileReadAheadThread()
+	{
+		close( m_iFD );
+		m_WorkerThread.Wait();
+	}
+	bool IsFinished() const { return m_bFinished; }
+
+private:
+	static int StartWorkerMain( void *pThis )
+	{
+		((RageFileReadAheadThread *) (pThis))->WorkerMain();
+		return 0;
+	}
+	
+	void WorkerMain()
+	{
+		RString sBuffer;
+		int iFDCopy = dup( m_iFD );
+		if( iFDCopy != -1 )
+		{
+			char *pBuf = sBuffer.GetBuffer( m_iBytes );
+			lseek( iFDCopy, m_iFrom, SEEK_SET );
+			read( iFDCopy, pBuf, m_iBytes );
+			sBuffer.ReleaseBuffer( m_iBytes );
+
+			close( iFDCopy );
+			LOG->Trace("read");
+		}
+
+		m_bFinished = true;
+	}
+
+	RageThread m_WorkerThread;
+
+	bool m_bFinished;
+	int m_iFD;
+	int m_iFrom;
+	int m_iBytes;
+};
+
+
+static vector<RageFileReadAheadThread *> g_apReadAheads;
+
+void RageFileManagerReadAhead::Init() { }
+void RageFileManagerReadAhead::Shutdown()
+{
+	for( size_t i = 0; i < g_apReadAheads.size(); ++i )
+		delete g_apReadAheads[i];
+	g_apReadAheads.clear();
+}
+
+/* This emulates posix_fadvise(POSIX_FADV_WILLNEED), to force data into cache and hint the
+ * kernel to start read-ahead from that point. */
+void RageFileManagerReadAhead::ReadAhead( RageFileBasic *pFile, int iBytes )
+{
+	int iFD = pFile->GetFD();
+	if( iFD == -1 )
+		return;
+
+	iFD = dup( iFD );
+	if( iFD == -1 )
+	{
+		LOG->Trace( "error: dup(): %s", strerror(errno) );
+		return;
+	}
+
+	int iStart = lseek( iFD, 0, SEEK_CUR );
+
+	RageFileReadAheadThread *pReadAhead = new RageFileReadAheadThread( iFD, iStart, iBytes );
+	g_apReadAheads.push_back( pReadAhead );
+	
+	for( size_t i = 0; i < g_apReadAheads.size(); ++i )
+	{
+		if( g_apReadAheads[i]->IsFinished() )
+		{
+			LOG->Trace("cleaned");
+			delete g_apReadAheads[i];
+			g_apReadAheads.erase( g_apReadAheads.begin()+i, g_apReadAheads.begin()+i+1 );
+			--i;
+		}
+	}
+}
+#else
+void RageFileManagerReadAhead::Init() { }
+void RageFileManagerReadAhead::Shutdown() { }
+void RageFileManagerReadAhead::ReadAhead( RageFileBasic *pFile, int iBytes ) { }
+#endif
+#endif
+
+#if defined(HAVE_POSIX_FADVISE)
+void RageFileManagerReadAhead::CacheHintStreaming( RageFileBasic *pFile )
+{
+	/* This guesses at the actual size of the file on disk, which may be smaller if this file is compressed.
+	 * Since this is usually used on music and video files, it generally shouldn't be. */
+	int iFD = pFile->GetFD();
+	if( iFD == -1 )
+		return;
+	int iPos = pFile->Tell();
+	int iFrom = lseek( iFD, 0, SEEK_CUR );
+	int iBytes = pFile->GetFileSize() - iPos;
+	posix_fadvise( iFD, iFrom, iBytes, POSIX_FADV_SEQUENTIAL );
+}
+#else
+void RageFileManagerReadAhead::CacheHintStreaming( RageFileBasic *pFile ) { }
+#endif
+
+
+/*
+ * Copyright (c) 2010 Glenn Maynard
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, and/or sell copies of the Software, and to permit persons to
+ * whom the Software is furnished to do so, provided that the above
+ * copyright notice(s) and this permission notice appear in all copies of
+ * the Software and that both the above copyright notice(s) and this
+ * permission notice appear in supporting documentation.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+ * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
+ * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
+ * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */

src/RageFileManager_ReadAhead.h

@@ -0,0 +1,42 @@
+#ifndef RAGE_FILE_MANAGER_READAHEAD_H
+#define RAGE_FILE_MANAGER_READAHEAD_H
+
+#include "RageFileBasic.h"
+
+namespace RageFileManagerReadAhead
+{
+	void Init();
+	void Shutdown();
+
+	/* Nonblockingly read bytes from a file. */
+	void ReadAhead( RageFileBasic *pFile, int iBytes );
+
+	void CacheHintStreaming( RageFileBasic *pFile );
+};
+
+#endif
+
+/*
+ * Copyright (c) 2010 Glenn Maynard
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, and/or sell copies of the Software, and to permit persons to
+ * whom the Software is furnished to do so, provided that the above
+ * copyright notice(s) and this permission notice appear in all copies of
+ * the Software and that both the above copyright notice(s) and this
+ * permission notice appear in supporting documentation.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+ * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
+ * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
+ * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */

src/ScreenEdit.cpp

@@ -712,7 +712,7 @@ void ScreenEdit::Init()
 	CopyToLastSave();
 
 	m_CurrentAction = MAIN_MENU_CHOICE_INVALID;
-	if( GAMESTATE->m_pCurSteps[0]->m_StepsType == StepsType_dance_routine )
+	if( GAMESTATE->GetCurrentStyle()->m_StyleType == StyleType_TwoPlayersSharedSides )
 		m_InputPlayerNumber = PLAYER_1;
 	else
 		m_InputPlayerNumber = PLAYER_INVALID;
@@ -2179,6 +2179,12 @@ void ScreenEdit::InputPlay( const InputEventPlus &input, EditButton EditB )
 		bool bRelease = input.type == IET_RELEASE;
 		switch( input.pn )
 		{
+		case PLAYER_2:
+			// ignore player 2 input unless this mode requires it
+			if( GAMESTATE->GetCurrentStyle()->m_StyleType != StyleType_TwoPlayersSharedSides )
+				break;
+
+		// fall through to input handling logic:
 		case PLAYER_1:
 			{
 				switch( gbt )
@@ -2199,9 +2205,6 @@ void ScreenEdit::InputPlay( const InputEventPlus &input, EditButton EditB )
 				}
 			}
 			break;
-		case PLAYER_2:
-			if( GAMESTATE->GetCurrentStyle()->m_StyleType == StyleType_TwoPlayersSharedSides )
-				m_Player->Step( iCol, -1, input.DeviceI.ts, false, input.type == IET_RELEASE );
 		}
 	}
 

src/ScreenSelectMusic.cpp

@@ -192,8 +192,10 @@ void ScreenSelectMusic::Init()
 	this->SortByDrawOrder();
 }
 
+//#include "RageTimer.h"
 void ScreenSelectMusic::BeginScreen()
 {
+	//RageTimer tm;
 	g_ScreenStartedLoadingAt.Touch();
 
 	if( CommonMetrics::AUTO_SET_STYLE )
@@ -213,6 +215,7 @@ void ScreenSelectMusic::BeginScreen()
 		GAMESTATE->m_PlayMode.Set( PLAY_MODE_REGULAR );
 		LOG->Trace( "PlayMode not set, setting as regular." );
 	}
+	//LOG->Trace("XXX 1 %f", tm.GetDeltaTime());
 	FOREACH_ENUM( PlayerNumber, pn )
 	{
 		if( GAMESTATE->IsHumanPlayer(pn) )
@@ -223,23 +226,30 @@ void ScreenSelectMusic::BeginScreen()
 	
 	OPTIONS_MENU_AVAILABLE.Load( m_sName, "OptionsMenuAvailable" );
 	PlayCommand( "Mods" );
+	//LOG->Trace("XXX 2a %f", tm.GetDeltaTime());
 	m_MusicWheel.BeginScreen();
+	//LOG->Trace("XXX 2b %f", tm.GetDeltaTime());
 
 	m_SelectionState = SelectionState_SelectingSong;
 	ZERO( m_bStepsChosen );
 	m_bGoToOptions = false;
 	m_bAllowOptionsMenu = m_bAllowOptionsMenuRepeat = false;
 	ZERO( m_iSelection );
+	//LOG->Trace("XXX 3 %f", tm.GetDeltaTime());
 
 	if( USE_OPTIONS_LIST )
 		FOREACH_PlayerNumber( pn )
 			m_OptionsList[pn].Reset();
 
+	//LOG->Trace("XXX 4a %f", tm.GetDeltaTime());
 	AfterMusicChange();
+	//LOG->Trace("XXX 4b %f", tm.GetDeltaTime());
 
 	SOUND->PlayOnceFromAnnouncer( "select music intro" );
 
+	//LOG->Trace("XXX 4c %f", tm.GetDeltaTime());
 	ScreenWithMenuElements::BeginScreen();
+	//LOG->Trace("XXX 5 %f", tm.GetDeltaTime());
 }
 
 ScreenSelectMusic::~ScreenSelectMusic()

src/StepMania-net2003.vcproj

@@ -1753,6 +1753,12 @@ cl /Zl /nologo /c verstub.cpp /Fo"$(IntDir)"\
 			<File
 				RelativePath="RageFileDriverMemory.h">
 			</File>
+			<File
+				RelativePath=".\RageFileDriverReadAhead.cpp">
+			</File>
+			<File
+				RelativePath=".\RageFileDriverReadAhead.h">
+			</File>
 			<File
 				RelativePath="RageFileDriverSlice.cpp">
 			</File>
@@ -1777,6 +1783,12 @@ cl /Zl /nologo /c verstub.cpp /Fo&quot;$(IntDir)&quot;\
 			<File
 				RelativePath="RageFileManager.h">
 			</File>
+			<File
+				RelativePath=".\RageFileManager_ReadAhead.cpp">
+			</File>
+			<File
+				RelativePath=".\RageFileManager_ReadAhead.h">
+			</File>
 			<File
 				RelativePath=".\RageInput.cpp">
 			</File>

src/StepMania-net2005.vcproj

@@ -3050,6 +3050,14 @@
 				RelativePath="RageFileDriverMemory.h"
 				>
 			</File>
+			<File
+				RelativePath=".\RageFileDriverReadAhead.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\RageFileDriverReadAhead.h"
+				>
+			</File>
 			<File
 				RelativePath="RageFileDriverSlice.cpp"
 				>
@@ -3082,6 +3090,14 @@
 				RelativePath="RageFileManager.h"
 				>
 			</File>
+			<File
+				RelativePath=".\RageFileManager_ReadAhead.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\RageFileManager_ReadAhead.h"
+				>
+			</File>
 			<File
 				RelativePath=".\RageInput.cpp"
 				>

src/StepMania-net2008.vcproj

@@ -3208,6 +3208,14 @@
 				RelativePath="RageFileDriverMemory.h"
 				>
 			</File>
+			<File
+				RelativePath=".\RageFileDriverReadAhead.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\RageFileDriverReadAhead.h"
+				>
+			</File>
 			<File
 				RelativePath="RageFileDriverSlice.cpp"
 				>
@@ -3240,6 +3248,14 @@
 				RelativePath="RageFileManager.h"
 				>
 			</File>
+			<File
+				RelativePath=".\RageFileManager_ReadAhead.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\RageFileManager_ReadAhead.h"
+				>
+			</File>
 			<File
 				RelativePath=".\RageInput.cpp"
 				>

src/StepMania.cpp

@@ -1272,10 +1272,8 @@ RString StepMania::SaveScreenshot( RString sDir, bool bSaveCompressed, bool bMak
 	else
 		sFileNameNoExtension = Profile::MakeFileNameNoExtension( "screen", iIndex );
 
-	//
 	// Save the screenshot.  If writing lossy to a memcard, use SAVE_LOSSY_LOW_QUAL, so we
 	// don't eat up lots of space.
-	//
 	RageDisplay::GraphicsFileFormat fmt;
 	if( bSaveCompressed && MEMCARDMAN->PathIsMemCard(sDir) )
 		fmt = RageDisplay::SAVE_LOSSY_LOW_QUAL;

src/StepManiaXbox-2003.vcproj

@@ -1949,6 +1949,12 @@ cl /Zl /nologo /c verstub.cpp /Fo$(IntDir)\
 			<File
 				RelativePath=".\RageFileDriverMemory.h">
 			</File>
+			<File
+				RelativePath=".\RageFileDriverReadAhead.cpp">
+			</File>
+			<File
+				RelativePath=".\RageFileDriverReadAhead.h">
+			</File>
 			<File
 				RelativePath=".\RageFileDriverSlice.cpp">
 			</File>
@@ -1973,6 +1979,12 @@ cl /Zl /nologo /c verstub.cpp /Fo$(IntDir)\
 			<File
 				RelativePath="RageFileManager.h">
 			</File>
+			<File
+				RelativePath=".\RageFileManager_ReadAhead.cpp">
+			</File>
+			<File
+				RelativePath=".\RageFileManager_ReadAhead.h">
+			</File>
 			<File
 				RelativePath=".\RageInput.cpp">
 			</File>

src/StreamDisplay.cpp

@@ -26,7 +26,7 @@ StreamDisplay::StreamDisplay()
 
 void StreamDisplay::Load( const RString &_sMetricsGroup )
 {
-	// XXX
+	// XXX: actually load from the metrics group passed in -aj
 	RString sMetricsGroup = "StreamDisplay";
 
 	m_transformPill.SetFromReference( THEME->GetMetricR(sMetricsGroup,"PillTransformFunction") );

src/arch/MovieTexture/MovieTexture_FFMpeg.cpp

@@ -6,6 +6,7 @@
 #include "RageUtil.h"
 #include "RageFile.h"
 #include "RageSurface.h"
+#include "RageFileDriverReadAhead.h"
 
 #include <cerrno>
 
@@ -639,6 +640,9 @@ int URLRageFile_open( avcodec::URLContext *h, const char *filename, int flags )
 	case URL_RDWR: FAIL_M( "O_RDWR unsupported" );
 	}
 
+	RageFileBasic *pFile = new RageFile;
+
+	{
 		RageFile *f = new RageFile;
 		if( !f->Open(filename, mode) )
 		{
@@ -646,21 +650,31 @@ int URLRageFile_open( avcodec::URLContext *h, const char *filename, int flags )
 			delete f;
 			return -EIO;
 		}
+		pFile = f;
+	}
+
+	// If possible, wrap this file in the read-ahead filter to avoid skips when we rewind.
+	if( RageFileDriverReadAhead::FileSupported(pFile) )
+	{
+		RageFileDriverReadAhead *pBufferedFile = new RageFileDriverReadAhead( pFile, 1024*128 );
+		pBufferedFile->DeleteFileWhenFinished();
+		pFile = pBufferedFile;
+	}
 
 	h->is_streamed = false;
-	h->priv_data = f;
+	h->priv_data = pFile;
 	return 0;
 }
 
 int URLRageFile_read( avcodec::URLContext *h, unsigned char *buf, int size )
 {
-	RageFile *f = (RageFile *) h->priv_data;
+	RageFileBasic *f = (RageFileBasic *) h->priv_data;
 	return f->Read( buf, size );
 }
 
 int URLRageFile_write( avcodec::URLContext *h, unsigned char *buf, int size )
 {
-	RageFile *f = (RageFile *) h->priv_data;
+	RageFileBasic *f = (RageFileBasic *) h->priv_data;
 	return f->Write( buf, size );
 }
 
@@ -671,7 +685,7 @@ int URLRageFile_write( avcodec::URLContext *h, unsigned char *buf, int size )
 	avcodec::int64_t URLRageFile_seek( avcodec::URLContext *h, avcodec::int64_t pos, int whence )
 #endif
 {
-	RageFile *f = (RageFile *) h->priv_data;
+	RageFileBasic *f = (RageFileBasic *) h->priv_data;
 	if( whence == AVSEEK_SIZE )
 		return f->GetFileSize();
 
@@ -683,7 +697,7 @@ int URLRageFile_write( avcodec::URLContext *h, unsigned char *buf, int size )
 
 int URLRageFile_close( avcodec::URLContext *h )
 {
-	RageFile *f = (RageFile *) h->priv_data;
+	RageFileBasic *f = (RageFileBasic *) h->priv_data;
 	delete f;
 	return 0;
 }

src/mad-0.15.1b/aclocal.m4

@@ -14,7 +14,6 @@
 # libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
 
 # serial 47 AC_PROG_LIBTOOL
-# Debian $Rev: 8581 $
 
 
 # AC_PROVIDE_IFELSE(MACRO-NAME, IF-PROVIDED, IF-NOT-PROVIDED)

src/mad-0.15.1b/ltmain.sh

@@ -56,7 +56,6 @@ modename="$progname"
 PROGRAM=ltmain.sh
 PACKAGE=libtool
 VERSION=1.5.2
-TIMESTAMP=" (1.1220.2.60 2004/01/25 12:25:08) Debian$Rev: 8581 $"
 
 default_mode=
 help="Try \`$progname --help' for more information."