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kicad/3d-viewer/3d_cache/3d_cache.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2015-2016 Cirilo Bernardo <cirilo.bernardo@gmail.com>
* Copyright (C) 2018-2020 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define GLM_FORCE_RADIANS
#include <mutex>
#include <utility>
#include <wx/datetime.h>
#include <wx/dir.h>
#include <wx/filename.h>
#include <wx/log.h>
#include <wx/stdpaths.h>
#include <boost/version.hpp>
#if BOOST_VERSION >= 106800
#include <boost/uuid/detail/sha1.hpp>
#else
#include <boost/uuid/sha1.hpp>
#endif
#include "3d_cache.h"
#include "3d_info.h"
#include "3d_plugin_manager.h"
#include "sg/scenegraph.h"
#include "plugins/3dapi/ifsg_api.h"
#include <filename_resolver.h>
#include <paths.h>
#include <pgm_base.h>
#include <project.h>
#include <settings/common_settings.h>
#include <settings/settings_manager.h>
#define MASK_3D_CACHE "3D_CACHE"
static std::mutex mutex3D_cache;
static std::mutex mutex3D_cacheManager;
static bool isSHA1Same( const unsigned char* shaA, const unsigned char* shaB ) noexcept
{
for( int i = 0; i < 20; ++i )
{
if( shaA[i] != shaB[i] )
return false;
}
return true;
}
static bool checkTag( const char* aTag, void* aPluginMgrPtr )
{
if( nullptr == aTag || nullptr == aPluginMgrPtr )
return false;
S3D_PLUGIN_MANAGER *pp = (S3D_PLUGIN_MANAGER*) aPluginMgrPtr;
return pp->CheckTag( aTag );
}
static const wxString sha1ToWXString( const unsigned char* aSHA1Sum )
{
unsigned char uc;
unsigned char tmp;
char sha1[41];
int j = 0;
for( int i = 0; i < 20; ++i )
{
uc = aSHA1Sum[i];
tmp = uc / 16;
if( tmp > 9 )
tmp += 87;
else
tmp += 48;
sha1[j++] = tmp;
tmp = uc % 16;
if( tmp > 9 )
tmp += 87;
else
tmp += 48;
sha1[j++] = tmp;
}
sha1[j] = 0;
return wxString::FromUTF8Unchecked( sha1 );
}
class S3D_CACHE_ENTRY
{
public:
S3D_CACHE_ENTRY();
~S3D_CACHE_ENTRY();
void SetSHA1( const unsigned char* aSHA1Sum );
const wxString GetCacheBaseName();
wxDateTime modTime; // file modification time
unsigned char sha1sum[20];
std::string pluginInfo; // PluginName:Version string
SCENEGRAPH* sceneData;
S3DMODEL* renderData;
private:
// prohibit assignment and default copy constructor
S3D_CACHE_ENTRY( const S3D_CACHE_ENTRY& source );
S3D_CACHE_ENTRY& operator=( const S3D_CACHE_ENTRY& source );
wxString m_CacheBaseName; // base name of cache file (a SHA1 digest)
};
S3D_CACHE_ENTRY::S3D_CACHE_ENTRY()
{
sceneData = nullptr;
renderData = nullptr;
memset( sha1sum, 0, 20 );
}
S3D_CACHE_ENTRY::~S3D_CACHE_ENTRY()
{
delete sceneData;
if( nullptr != renderData )
S3D::Destroy3DModel( &renderData );
}
void S3D_CACHE_ENTRY::SetSHA1( const unsigned char* aSHA1Sum )
{
if( nullptr == aSHA1Sum )
{
wxLogTrace( MASK_3D_CACHE, "%s:%s:%d\n * [BUG] NULL passed for aSHA1Sum",
__FILE__, __FUNCTION__, __LINE__ );
return;
}
memcpy( sha1sum, aSHA1Sum, 20 );
}
const wxString S3D_CACHE_ENTRY::GetCacheBaseName()
{
if( m_CacheBaseName.empty() )
m_CacheBaseName = sha1ToWXString( sha1sum );
return m_CacheBaseName;
}
S3D_CACHE::S3D_CACHE()
{
m_FNResolver = new FILENAME_RESOLVER;
m_project = nullptr;
m_Plugins = new S3D_PLUGIN_MANAGER;
}
S3D_CACHE::~S3D_CACHE()
{
COMMON_SETTINGS* commonSettings = Pgm().GetCommonSettings();
FlushCache();
// We'll delete ".3dc" cache files older than this many days
int clearCacheInterval = commonSettings->m_System.clear_3d_cache_interval;
// An interval of zero means the user doesn't want to ever clear the cache
if( clearCacheInterval > 0 )
CleanCacheDir( clearCacheInterval );
delete m_FNResolver;
delete m_Plugins;
}
SCENEGRAPH* S3D_CACHE::load( const wxString& aModelFile, S3D_CACHE_ENTRY** aCachePtr )
{
if( aCachePtr )
*aCachePtr = nullptr;
wxString full3Dpath = m_FNResolver->ResolvePath( aModelFile );
if( full3Dpath.empty() )
{
// the model cannot be found; we cannot proceed
wxLogTrace( MASK_3D_CACHE, "%s:%s:%d\n * [3D model] could not find model '%s'\n",
__FILE__, __FUNCTION__, __LINE__, aModelFile );
return nullptr;
}
// check cache if file is already loaded
std::lock_guard<std::mutex> lock( mutex3D_cache );
std::map< wxString, S3D_CACHE_ENTRY*, rsort_wxString >::iterator mi;
mi = m_CacheMap.find( full3Dpath );
if( mi != m_CacheMap.end() )
{
wxFileName fname( full3Dpath );
if( fname.FileExists() ) // Only check if file exists. If not, it will
{ // use the same model in cache.
bool reload = false;
wxDateTime fmdate = fname.GetModificationTime();
if( fmdate != mi->second->modTime )
{
unsigned char hashSum[20];
getSHA1( full3Dpath, hashSum );
mi->second->modTime = fmdate;
if( !isSHA1Same( hashSum, mi->second->sha1sum ) )
{
mi->second->SetSHA1( hashSum );
reload = true;
}
}
if( reload )
{
if( nullptr != mi->second->sceneData )
{
S3D::DestroyNode( mi->second->sceneData );
mi->second->sceneData = nullptr;
}
if( nullptr != mi->second->renderData )
S3D::Destroy3DModel( &mi->second->renderData );
mi->second->sceneData = m_Plugins->Load3DModel( full3Dpath,
mi->second->pluginInfo );
}
}
if( nullptr != aCachePtr )
*aCachePtr = mi->second;
return mi->second->sceneData;
}
// a cache item does not exist; search the Filename->Cachename map
return checkCache( full3Dpath, aCachePtr );
}
SCENEGRAPH* S3D_CACHE::Load( const wxString& aModelFile )
{
return load( aModelFile );
}
SCENEGRAPH* S3D_CACHE::checkCache( const wxString& aFileName, S3D_CACHE_ENTRY** aCachePtr )
{
if( aCachePtr )
*aCachePtr = nullptr;
unsigned char sha1sum[20];
if( !getSHA1( aFileName, sha1sum ) || m_CacheDir.empty() )
{
// just in case we can't get a hash digest (for example, on access issues)
// or we do not have a configured cache file directory, we create an
// entry to prevent further attempts at loading the file
S3D_CACHE_ENTRY* ep = new S3D_CACHE_ENTRY;
m_CacheList.push_back( ep );
wxFileName fname( aFileName );
ep->modTime = fname.GetModificationTime();
if( m_CacheMap.insert( std::pair< wxString, S3D_CACHE_ENTRY* >
( aFileName, ep ) ).second == false )
{
wxLogTrace( MASK_3D_CACHE, "%s:%s:%d\n * [BUG] duplicate entry in map file; key = '%s'",
__FILE__, __FUNCTION__, __LINE__, aFileName );
m_CacheList.pop_back();
delete ep;
}
else
{
if( aCachePtr )
*aCachePtr = ep;
}
return nullptr;
}
S3D_CACHE_ENTRY* ep = new S3D_CACHE_ENTRY;
m_CacheList.push_back( ep );
wxFileName fname( aFileName );
ep->modTime = fname.GetModificationTime();
if( m_CacheMap.insert( std::pair< wxString, S3D_CACHE_ENTRY* >
( aFileName, ep ) ).second == false )
{
wxLogTrace( MASK_3D_CACHE, "%s:%s:%d\n * [BUG] duplicate entry in map file; key = '%s'",
__FILE__, __FUNCTION__, __LINE__, aFileName );
m_CacheList.pop_back();
delete ep;
return nullptr;
}
if( aCachePtr )
*aCachePtr = ep;
ep->SetSHA1( sha1sum );
wxString bname = ep->GetCacheBaseName();
wxString cachename = m_CacheDir + bname + wxT( ".3dc" );
if( wxFileName::FileExists( cachename ) && loadCacheData( ep ) )
return ep->sceneData;
ep->sceneData = m_Plugins->Load3DModel( aFileName, ep->pluginInfo );
if( nullptr != ep->sceneData )
saveCacheData( ep );
return ep->sceneData;
}
bool S3D_CACHE::getSHA1( const wxString& aFileName, unsigned char* aSHA1Sum )
{
if( aFileName.empty() )
{
wxLogTrace( MASK_3D_CACHE, "%s:%s:%d\n * [BUG] empty filename",
__FILE__, __FUNCTION__, __LINE__ );
return false;
}
if( nullptr == aSHA1Sum )
{
wxLogTrace( MASK_3D_CACHE, "%s\n * [BUG] NULL pointer passed for aMD5Sum",
__FILE__, __FUNCTION__, __LINE__ );
return false;
}
#ifdef _WIN32
FILE* fp = _wfopen( aFileName.wc_str(), L"rb" );
#else
FILE* fp = fopen( aFileName.ToUTF8(), "rb" );
#endif
if( nullptr == fp )
return false;
boost::uuids::detail::sha1 dblock;
unsigned char block[4096];
size_t bsize = 0;
while( ( bsize = fread( &block, 1, 4096, fp ) ) > 0 )
dblock.process_bytes( block, bsize );
fclose( fp );
unsigned int digest[5];
dblock.get_digest( digest );
// ensure MSB order
for( int i = 0; i < 5; ++i )
{
int idx = i << 2;
unsigned int tmp = digest[i];
aSHA1Sum[idx+3] = tmp & 0xff;
tmp >>= 8;
aSHA1Sum[idx+2] = tmp & 0xff;
tmp >>= 8;
aSHA1Sum[idx+1] = tmp & 0xff;
tmp >>= 8;
aSHA1Sum[idx] = tmp & 0xff;
}
return true;
}
bool S3D_CACHE::loadCacheData( S3D_CACHE_ENTRY* aCacheItem )
{
wxString bname = aCacheItem->GetCacheBaseName();
if( bname.empty() )
{
wxLogTrace( MASK_3D_CACHE,
" * [3D model] cannot load cached model; no file hash available" );
return false;
}
if( m_CacheDir.empty() )
{
wxLogTrace( MASK_3D_CACHE,
" * [3D model] cannot load cached model; config directory unknown" );
return false;
}
wxString fname = m_CacheDir + bname + wxT( ".3dc" );
if( !wxFileName::FileExists( fname ) )
{
wxString errmsg = "cannot open file";
wxLogTrace( MASK_3D_CACHE, " * [3D model] %s '%s'", errmsg.GetData(), fname.GetData() );
return false;
}
if( nullptr != aCacheItem->sceneData )
S3D::DestroyNode( (SGNODE*) aCacheItem->sceneData );
aCacheItem->sceneData = (SCENEGRAPH*)S3D::ReadCache( fname.ToUTF8(), m_Plugins, checkTag );
if( nullptr == aCacheItem->sceneData )
return false;
return true;
}
bool S3D_CACHE::saveCacheData( S3D_CACHE_ENTRY* aCacheItem )
{
if( nullptr == aCacheItem )
{
wxLogTrace( MASK_3D_CACHE, "%s:%s:%d\n * NULL passed for aCacheItem",
__FILE__, __FUNCTION__, __LINE__ );
return false;
}
if( nullptr == aCacheItem->sceneData )
{
wxLogTrace( MASK_3D_CACHE, "%s:%s:%d\n * aCacheItem has no valid scene data",
__FILE__, __FUNCTION__, __LINE__ );
return false;
}
wxString bname = aCacheItem->GetCacheBaseName();
if( bname.empty() )
{
wxLogTrace( MASK_3D_CACHE,
" * [3D model] cannot load cached model; no file hash available" );
return false;
}
if( m_CacheDir.empty() )
{
wxLogTrace( MASK_3D_CACHE,
" * [3D model] cannot load cached model; config directory unknown" );
return false;
}
wxString fname = m_CacheDir + bname + wxT( ".3dc" );
if( wxFileName::Exists( fname ) )
{
if( !wxFileName::FileExists( fname ) )
{
wxLogTrace( MASK_3D_CACHE, " * [3D model] path exists but is not a regular file '%s'",
fname );
return false;
}
}
return S3D::WriteCache( fname.ToUTF8(), true, (SGNODE*)aCacheItem->sceneData,
aCacheItem->pluginInfo.c_str() );
}
bool S3D_CACHE::Set3DConfigDir( const wxString& aConfigDir )
{
if( !m_ConfigDir.empty() )
return false;
wxFileName cfgdir( ExpandEnvVarSubstitutions( aConfigDir, m_project ), "" );
cfgdir.Normalize();
if( !cfgdir.DirExists() )
{
cfgdir.Mkdir( wxS_DIR_DEFAULT, wxPATH_MKDIR_FULL );
if( !cfgdir.DirExists() )
{
wxLogTrace( MASK_3D_CACHE,
"%s:%s:%d\n * failed to create 3D configuration directory '%s'",
__FILE__, __FUNCTION__, __LINE__, cfgdir.GetPath() );
return false;
}
}
m_ConfigDir = cfgdir.GetPath();
// inform the file resolver of the config directory
if( !m_FNResolver->Set3DConfigDir( m_ConfigDir ) )
{
wxLogTrace( MASK_3D_CACHE,
"%s:%s:%d\n * could not set 3D Config Directory on filename resolver\n"
" * config directory: '%s'",
__FILE__, __FUNCTION__, __LINE__, m_ConfigDir );
}
// 3D cache data must go to a user's cache directory;
// unfortunately wxWidgets doesn't seem to provide
// functions to retrieve such a directory.
//
// 1. OSX: ~/Library/Caches/kicad/3d/
// 2. Linux: ${XDG_CACHE_HOME}/kicad/3d ~/.cache/kicad/3d/
// 3. MSWin: AppData\Local\kicad\3d
wxFileName cacheDir;
cacheDir.AssignDir( PATHS::GetUserCachePath() );
cacheDir.AppendDir( "3d" );
if( !cacheDir.DirExists() )
{
cacheDir.Mkdir( wxS_DIR_DEFAULT, wxPATH_MKDIR_FULL );
if( !cacheDir.DirExists() )
{
wxLogTrace( MASK_3D_CACHE, "%s:%s:%d\n * failed to create 3D cache directory '%s'",
__FILE__, __FUNCTION__, __LINE__, cacheDir.GetPath() );
return false;
}
}
m_CacheDir = cacheDir.GetPathWithSep();
return true;
}
bool S3D_CACHE::SetProject( PROJECT* aProject )
{
m_project = aProject;
bool hasChanged = false;
if( m_FNResolver->SetProject( aProject, &hasChanged ) && hasChanged )
{
m_CacheMap.clear();
std::list< S3D_CACHE_ENTRY* >::iterator sL = m_CacheList.begin();
std::list< S3D_CACHE_ENTRY* >::iterator eL = m_CacheList.end();
while( sL != eL )
{
delete *sL;
++sL;
}
m_CacheList.clear();
return true;
}
return false;
}
void S3D_CACHE::SetProgramBase( PGM_BASE* aBase )
{
m_FNResolver->SetProgramBase( aBase );
}
FILENAME_RESOLVER* S3D_CACHE::GetResolver() noexcept
{
return m_FNResolver;
}
std::list< wxString > const* S3D_CACHE::GetFileFilters() const
{
return m_Plugins->GetFileFilters();
}
void S3D_CACHE::FlushCache( bool closePlugins )
{
std::list< S3D_CACHE_ENTRY* >::iterator sCL = m_CacheList.begin();
std::list< S3D_CACHE_ENTRY* >::iterator eCL = m_CacheList.end();
while( sCL != eCL )
{
delete *sCL;
++sCL;
}
m_CacheList.clear();
m_CacheMap.clear();
if( closePlugins )
ClosePlugins();
}
void S3D_CACHE::ClosePlugins()
{
if( m_Plugins )
m_Plugins->ClosePlugins();
}
S3DMODEL* S3D_CACHE::GetModel( const wxString& aModelFileName )
{
S3D_CACHE_ENTRY* cp = nullptr;
SCENEGRAPH* sp = load( aModelFileName, &cp );
if( !sp )
return nullptr;
if( !cp )
{
wxLogTrace( MASK_3D_CACHE,
"%s:%s:%d\n * [BUG] model loaded with no associated S3D_CACHE_ENTRY",
__FILE__, __FUNCTION__, __LINE__ );
return nullptr;
}
if( cp->renderData )
return cp->renderData;
S3DMODEL* mp = S3D::GetModel( sp );
cp->renderData = mp;
return mp;
}
void S3D_CACHE::CleanCacheDir( int aNumDaysOld )
{
wxDir dir;
wxString fileSpec = wxT( "*.3dc" );
wxArrayString fileList; // Holds list of ".3dc" files found in cache directory
size_t numFilesFound = 0;
wxFileName thisFile;
wxDateTime lastAccess, thresholdDate;
wxDateSpan durationInDays;
// Calc the threshold date above which we delete cache files
durationInDays.SetDays( aNumDaysOld );
thresholdDate = wxDateTime::Now() - durationInDays;
// If the cache directory can be found and opened, then we'll try and clean it up
if( dir.Open( m_CacheDir ) )
{
thisFile.SetPath( m_CacheDir ); // Set the base path to the cache folder
// Get a list of all the ".3dc" files in the cache directory
numFilesFound = dir.GetAllFiles( m_CacheDir, &fileList, fileSpec );
for( unsigned int i = 0; i < numFilesFound; i++ )
{
// Completes path to specific file so we can get its "last access" date
thisFile.SetFullName( fileList[i] );
// Only get "last access" time to compare against. Don't need the other 2 timestamps.
if( thisFile.GetTimes( &lastAccess, nullptr, nullptr ) )
{
if( lastAccess.IsEarlierThan( thresholdDate ) )
{
// This file is older than the threshold so delete it
wxRemoveFile( thisFile.GetFullPath() );
}
}
}
}
}
S3D_CACHE* PROJECT::Get3DCacheManager( bool aUpdateProjDir )
{
std::lock_guard<std::mutex> lock( mutex3D_cacheManager );
// Get the existing cache from the project
S3D_CACHE* cache = dynamic_cast<S3D_CACHE*>( GetElem( ELEM_3DCACHE ) );
if( !cache )
{
// Create a cache if there is not one already
cache = new S3D_CACHE();
wxFileName cfgpath;
cfgpath.AssignDir( SETTINGS_MANAGER::GetUserSettingsPath() );
cfgpath.AppendDir( wxT( "3d" ) );
cache->SetProgramBase( &Pgm() );
cache->Set3DConfigDir( cfgpath.GetFullPath() );
SetElem( ELEM_3DCACHE, cache );
aUpdateProjDir = true;
}
if( aUpdateProjDir )
cache->SetProject( this );
return cache;
}
FILENAME_RESOLVER* PROJECT::Get3DFilenameResolver()
{
return Get3DCacheManager()->GetResolver();
}
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