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save memory by loading SMData from cache on demand

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This commit is contained in:
Glenn Maynard
2004-07-22 21:02:07 +00:00
parent daff442724
commit bd7eaf3f6c
3 changed files with 77 additions and 11 deletions
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stepmania/src/Steps.cpp
+63 -4
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@@ -1,5 +1,21 @@
/*
* This stores a single note pattern for a song.
*
* We can have too much data to keep everything decompressed as NoteData, so most
* songs are kept in memory compressed as SMData until requested. NoteData is normally
* not requested casually during gameplay; we can move through screens, the music
* wheel, etc. without touching any NoteData.
*
* To save more memory, if data is cached on disk, read it from disk on demand. Not
* all Steps will have an associated file for this purpose. (Profile edits don't do
* this yet.)
*
* Data can be on disk (always compressed), compressed in memory, and uncompressed in
* memory.
*/
#include "global.h"
#include "Steps.h"
#include "StepsUtil.h"
#include "song.h"
#include "Steps.h"
#include "IniFile.h"
@@ -13,6 +29,7 @@
#include "NoteDataUtil.h"
#include "ProfileManager.h"
#include "PrefsManager.h"
#include "NotesLoaderSM.h"
Steps::Steps()
{
@@ -143,10 +160,9 @@ void Steps::TidyUpData()
void Steps::Decompress() const
{
if(notes)
{
return; // already decompressed
}
else if(parent)
if(parent)
{
// get autogen notes
NoteData pdata;
@@ -164,8 +180,36 @@ void Steps::Decompress() const
NoteDataUtil::FixImpossibleRows( *notes, m_StepsType );
}
return;
}
else if(!notes_comp)
if( !m_sFilename.empty() && notes_comp == NULL )
{
/* We have data on disk and not in memory. Load it. */
Song s;
SMLoader ld;
if( !ld.LoadFromSMFile( m_sFilename, s, true ) )
{
LOG->Warn( "Couldn't load \"%s\"", m_sFilename.c_str() );
return;
}
/* Find the steps. */
StepsID ID;
ID.FromSteps( this );
Steps *pSteps = ID.ToSteps( &s, true );
if( pSteps == NULL )
{
LOG->Warn( "Couldn't find %s in \"%s\"", ID.ToString().c_str(), m_sFilename.c_str() );
return;
}
notes_comp = new CompressedNoteData;
pSteps->GetSMNoteData( notes_comp->notes, notes_comp->attacks );
}
if( notes_comp == NULL )
{
/* there is no data, do nothing */
}
@@ -181,6 +225,16 @@ void Steps::Decompress() const
void Steps::Compress() const
{
if( !m_sFilename.empty() )
{
/* We have a file on disk; clear all data in memory. */
delete notes;
notes = NULL;
delete notes_comp;
notes_comp = NULL;
return;
}
if(!notes_comp)
{
if(!notes) return; /* no data is no data */
@@ -251,6 +305,11 @@ bool Steps::IsAutogen() const
return parent != NULL;
}
void Steps::SetFile( CString fn )
{
m_sFilename = fn;
}
void Steps::SetDescription(CString desc)
{
DeAutogen();