Merge pull request #30 from dmpelt/logging

New logging API

28 files changed, 1380 insertions, 0 deletions

diff --git a/matlab/mex/astra_mex.cpp b/matlab/mex/astra_mex.cpp
index 0eb5662..4bf42dd 100644
--- a/matlab/mex/astra_mex.cpp
+++ b/matlab/mex/astra_mex.cpp
@@ -28,6 +28,7 @@ $Id$
 
 #include <mex.h>
 #include "mexHelpFunctions.h"
+#include "mexInitFunctions.h"
 
 #include "astra/Globals.h"
 
@@ -104,6 +105,8 @@ void mexFunction(int nlhs, mxArray* plhs[],
 		return;
 	}
 
+	initASTRAMex();
+
 	// SWITCH (MODE)
 	if (sMode ==  std::string("version")) { 
 		astra_mex_version(nlhs, plhs, nrhs, prhs); 
diff --git a/matlab/mex/astra_mex_algorithm_c.cpp b/matlab/mex/astra_mex_algorithm_c.cpp
index 669af8c..e4afa63 100644
--- a/matlab/mex/astra_mex_algorithm_c.cpp
+++ b/matlab/mex/astra_mex_algorithm_c.cpp
@@ -32,6 +32,7 @@ $Id$
  */
 #include <mex.h>
 #include "mexHelpFunctions.h"
+#include "mexInitFunctions.h"
 #include "astra/Globals.h"
 
 #define USE_MATLAB_UNDOCUMENTED
@@ -325,6 +326,8 @@ void mexFunction(int nlhs, mxArray* plhs[],
 		return;
 	}
 
+	initASTRAMex();
+
 	// SWITCH (MODE)
 	if (sMode == "create") {
 		astra_mex_algorithm_create(nlhs, plhs, nrhs, prhs);
diff --git a/matlab/mex/astra_mex_algorithm_vc09.vcproj b/matlab/mex/astra_mex_algorithm_vc09.vcproj
index 40fcf62..d5cebc0 100644
--- a/matlab/mex/astra_mex_algorithm_vc09.vcproj
+++ b/matlab/mex/astra_mex_algorithm_vc09.vcproj
@@ -598,6 +598,14 @@
 			RelativePath=".\mexHelpFunctions.h"
 			>
 		</File>
+		<File
+			RelativePath=".\mexInitFunctions.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\mexInitFunctions.h"
+			>
+		</File>
 	</Files>
 	<Globals>
 	</Globals>
diff --git a/matlab/mex/astra_mex_algorithm_vc11.vcxproj b/matlab/mex/astra_mex_algorithm_vc11.vcxproj
index a297e6d..c133e26 100644
--- a/matlab/mex/astra_mex_algorithm_vc11.vcxproj
+++ b/matlab/mex/astra_mex_algorithm_vc11.vcxproj
@@ -294,9 +294,11 @@
   <ItemGroup>
     <ClCompile Include="astra_mex_algorithm_c.cpp" />
     <ClCompile Include="mexHelpFunctions.cpp" />
+    <ClCompile Include="mexInitFunctions.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="mexHelpFunctions.h" />
+    <ClInclude Include="mexInitFunctions.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/matlab/mex/astra_mex_c.cpp b/matlab/mex/astra_mex_c.cpp
index 760bd51..4a331f5 100644
--- a/matlab/mex/astra_mex_c.cpp
+++ b/matlab/mex/astra_mex_c.cpp
@@ -33,6 +33,7 @@ $Id$
 
 #include <mex.h>
 #include "mexHelpFunctions.h"
+#include "mexInitFunctions.h"
 
 #include "astra/Globals.h"
 
@@ -128,6 +129,8 @@ void mexFunction(int nlhs, mxArray* plhs[],
 		return;
 	}
 
+	initASTRAMex();
+
 	// SWITCH (MODE)
 	if (sMode ==  std::string("version")) { 
 		astra_mex_version(nlhs, plhs, nrhs, prhs); 
diff --git a/matlab/mex/astra_mex_data2d_c.cpp b/matlab/mex/astra_mex_data2d_c.cpp
index 5f79e98..9576896 100644
--- a/matlab/mex/astra_mex_data2d_c.cpp
+++ b/matlab/mex/astra_mex_data2d_c.cpp
@@ -32,6 +32,7 @@ $Id$
  */
 #include <mex.h>
 #include "mexHelpFunctions.h"
+#include "mexInitFunctions.h"
 
 #include <list>
 
@@ -635,6 +636,8 @@ void mexFunction(int nlhs, mxArray* plhs[],
 		return;
 	}
 
+	initASTRAMex();
+
 	// SWITCH (MODE)
 	if (sMode ==  std::string("get")) { 
 		astra_mex_data2d_get(nlhs, plhs, nrhs, prhs); 
diff --git a/matlab/mex/astra_mex_data2d_vc09.vcproj b/matlab/mex/astra_mex_data2d_vc09.vcproj
index 5611ccc..2c8a63f 100644
--- a/matlab/mex/astra_mex_data2d_vc09.vcproj
+++ b/matlab/mex/astra_mex_data2d_vc09.vcproj
@@ -614,6 +614,14 @@
 			RelativePath=".\mexDataManagerHelpFunctions.h"
 			>
 		</File>
+		<File
+			RelativePath=".\mexInitFunctions.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\mexInitFunctions.h"
+			>
+		</File>
 	</Files>
 	<Globals>
 	</Globals>
diff --git a/matlab/mex/astra_mex_data2d_vc11.vcxproj b/matlab/mex/astra_mex_data2d_vc11.vcxproj
index 0ecc6ce..636780a 100644
--- a/matlab/mex/astra_mex_data2d_vc11.vcxproj
+++ b/matlab/mex/astra_mex_data2d_vc11.vcxproj
@@ -296,11 +296,13 @@
     <ClCompile Include="mexHelpFunctions.cpp" />
     <ClCompile Include="mexCopyDataHelpFunctions.cpp" />
     <ClCompile Include="mexDataManagerHelpFunctions.cpp" />
+    <ClCompile Include="mexInitFunctions.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="mexHelpFunctions.h" />
     <ClInclude Include="mexCopyDataHelpFunctions.h" />
     <ClInclude Include="mexDataManagerHelpFunctions.h" />
+    <ClInclude Include="mexInitFunctions.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/matlab/mex/astra_mex_data3d_c.cpp b/matlab/mex/astra_mex_data3d_c.cpp
index 0a3f85d..32b0ba7 100644
--- a/matlab/mex/astra_mex_data3d_c.cpp
+++ b/matlab/mex/astra_mex_data3d_c.cpp
@@ -32,6 +32,7 @@ $Id$
  */
 #include <mex.h>
 #include "mexHelpFunctions.h"
+#include "mexInitFunctions.h"
 #include "mexCopyDataHelpFunctions.h"
 #include "mexDataManagerHelpFunctions.h"
 
@@ -371,6 +372,8 @@ void mexFunction(int nlhs, mxArray* plhs[],
 		return;
 	}
 
+	initASTRAMex();
+
 	// 3D data
 	if (sMode ==  std::string("create")) { 
 		astra_mex_data3d_create(nlhs, plhs, nrhs, prhs); 
diff --git a/matlab/mex/astra_mex_data3d_vc09.vcproj b/matlab/mex/astra_mex_data3d_vc09.vcproj
index 74a35f4..fd861a3 100644
--- a/matlab/mex/astra_mex_data3d_vc09.vcproj
+++ b/matlab/mex/astra_mex_data3d_vc09.vcproj
@@ -614,6 +614,14 @@
 			RelativePath=".\mexDataManagerHelpFunctions.h"
 			>
 		</File>
+		<File
+			RelativePath=".\mexInitFunctions.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\mexInitFunctions.h"
+			>
+		</File>
 	</Files>
 	<Globals>
 	</Globals>
diff --git a/matlab/mex/astra_mex_data3d_vc11.vcxproj b/matlab/mex/astra_mex_data3d_vc11.vcxproj
index 8ac6f7c..1c3c620 100644
--- a/matlab/mex/astra_mex_data3d_vc11.vcxproj
+++ b/matlab/mex/astra_mex_data3d_vc11.vcxproj
@@ -296,11 +296,13 @@
     <ClCompile Include="mexHelpFunctions.cpp" />
     <ClCompile Include="mexCopyDataHelpFunctions.cpp" />
     <ClCompile Include="mexDataManagerHelpFunctions.cpp" />
+    <ClCompile Include="mexInitFunctions.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="mexHelpFunctions.h" />
     <ClInclude Include="mexCopyDataHelpFunctions.h" />
     <ClInclude Include="mexDataManagerHelpFunctions.h" />
+    <ClInclude Include="mexInitFunctions.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/matlab/mex/astra_mex_log_c.cpp b/matlab/mex/astra_mex_log_c.cpp
new file mode 100644
index 0000000..ea4621e
--- /dev/null
+++ b/matlab/mex/astra_mex_log_c.cpp
@@ -0,0 +1,305 @@
+/*
+-----------------------------------------------------------------------
+Copyright: 2010-2015, iMinds-Vision Lab, University of Antwerp
+           2014-2015, CWI, Amsterdam
+
+Contact: astra@uantwerpen.be
+Website: http://sf.net/projects/astra-toolbox
+
+This file is part of the ASTRA Toolbox.
+
+
+The ASTRA Toolbox is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+The ASTRA Toolbox is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
+
+-----------------------------------------------------------------------
+$Id$
+*/
+
+/** \file astra_mex_log_c.cpp
+ *
+ *  \brief Manages astra logging
+ */
+#include <mex.h>
+#include "mexHelpFunctions.h"
+#include "mexInitFunctions.h"
+
+#include "astra/Logging.h"
+
+using namespace std;
+using namespace astra;
+//-----------------------------------------------------------------------------------------
+/** astra_mex_log('debug', file, line, message);
+ *
+ * Log a debug message.
+ * file: Originating file name
+ * line: Originating line number
+ * message: Log message.
+ */
+void astra_mex_log_debug(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[])
+{
+	if (nrhs < 4) {
+		mexErrMsgTxt("Not enough arguments.  See the help document for a detailed argument list. \n");
+		return;
+	}
+	string filename = mexToString(prhs[1]);
+	int linenumber = (int)mxGetScalar(prhs[2]);
+	string message = mexToString(prhs[3]);
+	astra::CLogger::debug(filename.c_str(),linenumber,message.c_str());
+}
+
+//-----------------------------------------------------------------------------------------
+/** astra_mex_log('info', file, line, message);
+ *
+ * Log an info message.
+ * file: Originating file name
+ * line: Originating line number
+ * message: Log message.
+ */
+void astra_mex_log_info(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[])
+{
+	if (nrhs < 4) {
+		mexErrMsgTxt("Not enough arguments.  See the help document for a detailed argument list. \n");
+		return;
+	}
+	string filename = mexToString(prhs[1]);
+	int linenumber = (int)mxGetScalar(prhs[2]);
+	string message = mexToString(prhs[3]);
+	astra::CLogger::info(filename.c_str(),linenumber,message.c_str());
+}
+
+//-----------------------------------------------------------------------------------------
+/** astra_mex_log('warn', file, line, message);
+ *
+ * Log a warning message.
+ * file: Originating file name
+ * line: Originating line number
+ * message: Log message.
+ */
+void astra_mex_log_warn(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[])
+{
+	if (nrhs < 4) {
+		mexErrMsgTxt("Not enough arguments.  See the help document for a detailed argument list. \n");
+		return;
+	}
+	string filename = mexToString(prhs[1]);
+	int linenumber = (int)mxGetScalar(prhs[2]);
+	string message = mexToString(prhs[3]);
+	astra::CLogger::warn(filename.c_str(),linenumber,message.c_str());
+}
+
+//-----------------------------------------------------------------------------------------
+/** astra_mex_log('error', file, line, message);
+ *
+ * Log an error message.
+ * file: Originating file name
+ * line: Originating line number
+ * message: Log message.
+ */
+void astra_mex_log_error(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[])
+{
+	if (nrhs < 4) {
+		mexErrMsgTxt("Not enough arguments.  See the help document for a detailed argument list. \n");
+		return;
+	}
+	string filename = mexToString(prhs[1]);
+	int linenumber = (int)mxGetScalar(prhs[2]);
+	string message = mexToString(prhs[3]);
+	astra::CLogger::error(filename.c_str(),linenumber,message.c_str());
+}
+
+//-----------------------------------------------------------------------------------------
+/** astra_mex_log('enable', type);
+ *
+ * Enable logging.
+ * type: which output to enable ('all', 'file', 'screen')
+ */
+void astra_mex_log_enable(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[])
+{
+	if (nrhs < 2) {
+		mexErrMsgTxt("Not enough arguments.  See the help document for a detailed argument list. \n");
+		return;
+	}
+	string sType = mexToString(prhs[1]);
+	if(sType == "all"){
+		astra::CLogger::enable();
+	}else if(sType == "file"){
+		astra::CLogger::enableFile();
+	}else if(sType == "screen"){
+		astra::CLogger::enableScreen();
+	} else {
+		mexErrMsgTxt("Specify which output to enable ('all', 'file', or 'screen')");
+	}
+}
+
+//-----------------------------------------------------------------------------------------
+/** astra_mex_log('disable', type);
+ *
+ * Disable logging.
+ * type: which output to disable ('all', 'file', 'screen')
+ */
+void astra_mex_log_disable(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[])
+{
+	if (nrhs < 2) {
+		mexErrMsgTxt("Not enough arguments.  See the help document for a detailed argument list. \n");
+		return;
+	}
+	string sType = mexToString(prhs[1]);
+	if(sType == "all"){
+		astra::CLogger::disable();
+	}else if(sType == "file"){
+		astra::CLogger::disableFile();
+	}else if(sType == "screen"){
+		astra::CLogger::disableScreen();
+	} else {
+		mexErrMsgTxt("Specify which output to disable ('all', 'file', or 'screen')");
+	}
+}
+
+//-----------------------------------------------------------------------------------------
+/** astra_mex_log('format', type, fmt);
+ *
+ * Enable logging.
+ * type: which output to format ('file', 'screen')
+ * fmt: format string
+ *      Here are the substitutions you may use:
+ *      %f: Source file name generating the log call.
+ *      %n: Source line number where the log call was made.
+ *      %m: The message text sent to the logger (after printf formatting).
+ *      %d: The current date, formatted using the logger's date format.
+ *      %t: The current time, formatted using the logger's time format.
+ *      %l: The log level (one of "DEBUG", "INFO", "WARN", or "ERROR").
+ *      %%: A literal percent sign.
+ *      The default format string is "%d %t %f(%n): %l: %m\n".
+ */
+void astra_mex_log_format(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[])
+{
+	if (nrhs < 3) {
+		mexErrMsgTxt("Not enough arguments.  See the help document for a detailed argument list. \n");
+		return;
+	}
+	string sType = mexToString(prhs[1]);
+	string sFormat = mexToString(prhs[2]);
+	if (!sFormat.empty())
+	{
+		char lastChar = *sFormat.rbegin();
+		if (lastChar!='\n'){
+			sFormat += '\n';
+		}
+	}else{
+		sFormat += '\n';
+	}
+	if(sType == "file"){
+		astra::CLogger::setFormatFile(sFormat.c_str());
+	}else if(sType == "screen"){
+		astra::CLogger::setFormatScreen(sFormat.c_str());
+	} else {
+		mexErrMsgTxt("Specify which output to format ('file' or 'screen')");
+	}
+}
+
+//-----------------------------------------------------------------------------------------
+/** astra_mex_log('output', type, output, level);
+ *
+ * Set output file / output screen.
+ * type: which output to set ('file', 'screen')
+ * output: which output file / screen to use:
+ *         'file': filename
+ *         'screen': 'stdout' or 'stderr'
+ * level: logging level to use ('debug', 'info', 'warn', or 'error')
+ */
+void astra_mex_log_output(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[])
+{
+	if (nrhs < 4) {
+		mexErrMsgTxt("Not enough arguments.  See the help document for a detailed argument list. \n");
+		return;
+	}
+	string sType = mexToString(prhs[1]);
+	string sOutput = mexToString(prhs[2]);
+	string sLevel = mexToString(prhs[3]);
+	log_level eLevel;
+	if(sLevel == "debug"){
+		eLevel = LOG_DEBUG;
+	}else if(sLevel == "info"){
+		eLevel = LOG_INFO;
+	}else if(sLevel == "warn"){
+		eLevel = LOG_WARN;
+	}else if(sLevel == "error"){
+		eLevel = LOG_ERROR;
+	}else{
+		mexErrMsgTxt("Specify which log level to use ('debug', 'info', 'warn', or 'error')");
+	}
+	if(sType == "file"){
+		astra::CLogger::setOutputFile(sOutput.c_str(),eLevel);
+	}else if(sType == "screen"){
+		int fd;
+		if(sOutput == "stdout"){
+			fd=1;
+		}else if(sOutput == "stderr"){
+			fd=2;
+		}else{
+			mexErrMsgTxt("Specify which screen to output to ('stdout' or 'stderr')");
+		}
+		astra::CLogger::setOutputScreen(fd,eLevel);
+	} else {
+		mexErrMsgTxt("Specify which output to set ('file' or 'screen')");
+	}
+}
+
+//-----------------------------------------------------------------------------------------
+static void printHelp()
+{
+	mexPrintf("Please specify a mode of operation.\n");
+	mexPrintf("Valid modes: debug, info, warn, error, enable, disable, format, output\n");
+}
+
+//-----------------------------------------------------------------------------------------
+/**
+ * ... = astra_mex_log(mode, ...);
+ */
+void mexFunction(int nlhs, mxArray* plhs[],
+				 int nrhs, const mxArray* prhs[])
+{
+	// INPUT: Mode
+	string sMode = "";
+	if (1 <= nrhs) {
+		sMode = mexToString(prhs[0]);	
+	} else {
+		printHelp();
+		return;
+	}
+
+	initASTRAMex();
+
+	// SWITCH (MODE)
+	if (sMode == "debug") {
+		astra_mex_log_debug(nlhs, plhs, nrhs, prhs);
+    }else if (sMode == "info") {
+		astra_mex_log_info(nlhs, plhs, nrhs, prhs);
+	}else if (sMode == "warn") {
+		astra_mex_log_warn(nlhs, plhs, nrhs, prhs);
+	}else if (sMode == "error") {
+		astra_mex_log_error(nlhs, plhs, nrhs, prhs);
+	}else if (sMode == "enable") {
+		astra_mex_log_enable(nlhs, plhs, nrhs, prhs);
+	}else if (sMode == "disable") {
+		astra_mex_log_disable(nlhs, plhs, nrhs, prhs);
+	}else if (sMode == "format") {
+		astra_mex_log_format(nlhs, plhs, nrhs, prhs);
+	}else if (sMode == "output") {
+		astra_mex_log_output(nlhs, plhs, nrhs, prhs);
+	} else {
+		printHelp();
+	}
+	return;
+}
diff --git a/matlab/mex/astra_mex_log_vc09.vcproj b/matlab/mex/astra_mex_log_vc09.vcproj
new file mode 100644
index 0000000..0e0d469
--- /dev/null
+++ b/matlab/mex/astra_mex_log_vc09.vcproj
@@ -0,0 +1,612 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="9.00"
+	Name="astra_mex_log"
+	ProjectGUID="{CA2840B3-DA68-41B5-AC57-F5DFD20ED8F8}"
+	RootNamespace="astraMatlab"
+	TargetFrameworkVersion="131072"
+	>
+	<Platforms>
+		<Platform
+			Name="Win32"
+		/>
+		<Platform
+			Name="x64"
+		/>
+	</Platforms>
+	<ToolFiles>
+	</ToolFiles>
+	<Configurations>
+		<Configuration
+			Name="Debug_CUDA|Win32"
+			OutputDirectory="$(SolutionDir)bin\$(PlatformName)\$(ConfigurationName)"
+			IntermediateDirectory="$(OutDir)\obj\$(ProjectName)"
+			ConfigurationType="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				AdditionalIncludeDirectories="$(MATLAB_ROOT)\extern\include\;&quot;$(CUDA_INC_PATH)&quot;;..\..\lib\include;..\..\include"
+				PreprocessorDefinitions="ASTRA_CUDA;__SSE2__"
+				Optimization="0"
+				RuntimeLibrary="3"
+				EnableEnhancedInstructionSet="2"
+				OpenMP="true"
+				AdditionalOptions="/MP"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="AstraCuda32D.lib libmex.lib libmx.lib libut.lib"
+				OutputFile="$(OutDir)\$(ProjectName)_c.mexw32"
+				AdditionalLibraryDirectories="..\..\bin\win32;$(MATLAB_ROOT)\extern\lib\win32\microsoft;..\..\lib\win32"
+				ModuleDefinitionFile="mex.def"
+				GenerateDebugInformation="true"
+				TargetMachine="1"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Debug_CUDA|x64"
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+				TargetMachine="17"
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+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<File
+			RelativePath=".\astra_mex_log_c.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\mexHelpFunctions.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\mexHelpFunctions.h"
+			>
+		</File>
+		<File
+			RelativePath=".\mexInitFunctions.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\mexInitFunctions.h"
+			>
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diff --git a/matlab/mex/astra_mex_log_vc11.vcxproj b/matlab/mex/astra_mex_log_vc11.vcxproj
new file mode 100644
index 0000000..0a939cf
--- /dev/null
+++ b/matlab/mex/astra_mex_log_vc11.vcxproj
@@ -0,0 +1,306 @@
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+    <TargetExt>.mexw32</TargetExt>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <OutDir>$(SolutionDir)bin\$(Platform)\$(Configuration)\</OutDir>
+    <IntDir>$(OutDir)obj\$(ProjectName)\</IntDir>
+    <TargetName>$(ProjectName)_c</TargetName>
+    <TargetExt>.mexw64</TargetExt>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug_CUDA|Win32'">
+    <ClCompile>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <AdditionalIncludeDirectories>$(MATLAB_ROOT)\extern\include\;$(CUDA_PATH)\include;..\..\lib\include;..\..\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <OpenMPSupport>true</OpenMPSupport>
+      <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>ASTRA_CUDA;__SSE2__;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(ProjectName)_c.mexw32</OutputFile>
+      <AdditionalDependencies>AstraCuda32D.lib;libmex.lib;libmx.lib;libut.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>..\..\lib\win32\;..\..\bin\win32\Debug_CUDA;$(MATLAB_ROOT)\extern\lib\win32\microsoft;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <ModuleDefinitionFile>mex.def</ModuleDefinitionFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug_CUDA|x64'">
+    <ClCompile>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <AdditionalIncludeDirectories>$(MATLAB_ROOT)\extern\include\;$(CUDA_PATH)\include;..\..\lib\include;..\..\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <OpenMPSupport>true</OpenMPSupport>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>ASTRA_CUDA;__SSE2__;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(ProjectName)_c.mexw64</OutputFile>
+      <AdditionalDependencies>AstraCuda64D.lib;libmex.lib;libmx.lib;libut.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>..\..\lib\x64\;..\..\bin\x64\Debug_CUDA;$(MATLAB_ROOT)\extern\lib\win64\microsoft;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <ModuleDefinitionFile>mex.def</ModuleDefinitionFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <AdditionalIncludeDirectories>$(MATLAB_ROOT)\extern\include\;$(CUDA_PATH)\include;..\..\lib\include;..\..\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <OpenMPSupport>true</OpenMPSupport>
+      <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>__SSE2__;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(ProjectName)_c.mexw32</OutputFile>
+      <AdditionalDependencies>Astra32D.lib;libmex.lib;libmx.lib;libut.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>..\..\lib\win32\;..\..\bin\win32\Debug;$(MATLAB_ROOT)\extern\lib\win32\microsoft;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <ModuleDefinitionFile>mex.def</ModuleDefinitionFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <AdditionalIncludeDirectories>$(MATLAB_ROOT)\extern\include\;$(CUDA_PATH)\include;..\..\lib\include;..\..\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <OpenMPSupport>true</OpenMPSupport>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>__SSE2__;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(ProjectName)_c.mexw64</OutputFile>
+      <AdditionalDependencies>Astra64D.lib;libmex.lib;libmx.lib;libut.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>..\..\lib\x64\;..\..\bin\x64\Debug;$(MATLAB_ROOT)\extern\lib\win64\microsoft;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <ModuleDefinitionFile>mex.def</ModuleDefinitionFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release_CUDA|Win32'">
+    <ClCompile>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+      <AdditionalIncludeDirectories>$(MATLAB_ROOT)\extern\include\;$(CUDA_PATH)\include;..\..\lib\include;..\..\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <OpenMPSupport>true</OpenMPSupport>
+      <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>ASTRA_CUDA;__SSE2__;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(ProjectName)_c.mexw32</OutputFile>
+      <AdditionalDependencies>AstraCuda32.lib;libmex.lib;libmx.lib;libut.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>..\..\lib\win32\;..\..\bin\win32\Release_CUDA;$(MATLAB_ROOT)\extern\lib\win32\microsoft;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <ModuleDefinitionFile>mex.def</ModuleDefinitionFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release_CUDA|x64'">
+    <ClCompile>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+      <AdditionalIncludeDirectories>$(MATLAB_ROOT)\extern\include\;$(CUDA_PATH)\include;..\..\lib\include;..\..\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <OpenMPSupport>true</OpenMPSupport>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>ASTRA_CUDA;__SSE2__;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(ProjectName)_c.mexw64</OutputFile>
+      <AdditionalDependencies>AstraCuda64.lib;libmex.lib;libmx.lib;libut.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>..\..\lib\x64\;..\..\bin\x64\Release_CUDA;$(MATLAB_ROOT)\extern\lib\win64\microsoft;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <ModuleDefinitionFile>mex.def</ModuleDefinitionFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+      <AdditionalIncludeDirectories>$(MATLAB_ROOT)\extern\include\;$(CUDA_PATH)\include;..\..\lib\include;..\..\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <OpenMPSupport>true</OpenMPSupport>
+      <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>__SSE2__;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(ProjectName)_c.mexw32</OutputFile>
+      <AdditionalDependencies>Astra32.lib;libmex.lib;libmx.lib;libut.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>..\..\lib\win32\;..\..\bin\win32\Release;$(MATLAB_ROOT)\extern\lib\win32\microsoft;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <ModuleDefinitionFile>mex.def</ModuleDefinitionFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+      <AdditionalIncludeDirectories>$(MATLAB_ROOT)\extern\include\;$(CUDA_PATH)\include;..\..\lib\include;..\..\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <OpenMPSupport>true</OpenMPSupport>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>__SSE2__;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(ProjectName)_c.mexw64</OutputFile>
+      <AdditionalDependencies>Astra64.lib;libmex.lib;libmx.lib;libut.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>..\..\lib\x64\;..\..\bin\x64\Release;$(MATLAB_ROOT)\extern\lib\win64\microsoft;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <ModuleDefinitionFile>mex.def</ModuleDefinitionFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="astra_mex_log_c.cpp" />
+    <ClCompile Include="mexHelpFunctions.cpp" />
+    <ClCompile Include="mexInitFunctions.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="mexHelpFunctions.h" />
+    <ClInclude Include="mexInitFunctions.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/matlab/mex/astra_mex_matrix_c.cpp b/matlab/mex/astra_mex_matrix_c.cpp
index 01ad08b..aa31383 100644
--- a/matlab/mex/astra_mex_matrix_c.cpp
+++ b/matlab/mex/astra_mex_matrix_c.cpp
@@ -32,6 +32,7 @@ $Id$
  */
 #include <mex.h>
 #include "mexHelpFunctions.h"
+#include "mexInitFunctions.h"
 
 #include <list>
 
@@ -412,6 +413,8 @@ void mexFunction(int nlhs, mxArray* plhs[],
 		return;
 	}
 
+	initASTRAMex();
+
 	// SWITCH (MODE)
 	if (sMode ==  std::string("get")) { 
 		astra_mex_matrix_get(nlhs, plhs, nrhs, prhs); 
diff --git a/matlab/mex/astra_mex_matrix_vc09.vcproj b/matlab/mex/astra_mex_matrix_vc09.vcproj
index e4b57e9..3aa17a5 100644
--- a/matlab/mex/astra_mex_matrix_vc09.vcproj
+++ b/matlab/mex/astra_mex_matrix_vc09.vcproj
@@ -598,6 +598,14 @@
 			RelativePath=".\mexHelpFunctions.h"
 			>
 		</File>
+		<File
+			RelativePath=".\mexInitFunctions.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\mexInitFunctions.h"
+			>
+		</File>
 	</Files>
 	<Globals>
 	</Globals>
diff --git a/matlab/mex/astra_mex_matrix_vc11.vcxproj b/matlab/mex/astra_mex_matrix_vc11.vcxproj
index 91e32bd..abf86a7 100644
--- a/matlab/mex/astra_mex_matrix_vc11.vcxproj
+++ b/matlab/mex/astra_mex_matrix_vc11.vcxproj
@@ -294,9 +294,11 @@
   <ItemGroup>
     <ClCompile Include="astra_mex_matrix_c.cpp" />
     <ClCompile Include="mexHelpFunctions.cpp" />
+    <ClCompile Include="mexInitFunctions.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="mexHelpFunctions.h" />
+    <ClInclude Include="mexInitFunctions.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/matlab/mex/astra_mex_projector3d_c.cpp b/matlab/mex/astra_mex_projector3d_c.cpp
index 5381cf6..c3b547f 100644
--- a/matlab/mex/astra_mex_projector3d_c.cpp
+++ b/matlab/mex/astra_mex_projector3d_c.cpp
@@ -33,6 +33,7 @@ $Id$
 
 #include <mex.h>
 #include "mexHelpFunctions.h"
+#include "mexInitFunctions.h"
 
 #include "astra/Globals.h"
 
@@ -403,6 +404,8 @@ void mexFunction(int nlhs, mxArray* plhs[],
 		return;
 	}
 
+	initASTRAMex();
+
 	// SWITCH (MODE)
 	if (sMode == "create") {
 		astra_mex_projector3d_create(nlhs, plhs, nrhs, prhs);
diff --git a/matlab/mex/astra_mex_projector3d_vc09.vcproj b/matlab/mex/astra_mex_projector3d_vc09.vcproj
index 09fa3c6..b9464a2 100644
--- a/matlab/mex/astra_mex_projector3d_vc09.vcproj
+++ b/matlab/mex/astra_mex_projector3d_vc09.vcproj
@@ -598,6 +598,14 @@
 			RelativePath=".\mexHelpFunctions.h"
 			>
 		</File>
+		<File
+			RelativePath=".\mexInitFunctions.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\mexInitFunctions.h"
+			>
+		</File>
 	</Files>
 	<Globals>
 	</Globals>
diff --git a/matlab/mex/astra_mex_projector3d_vc11.vcxproj b/matlab/mex/astra_mex_projector3d_vc11.vcxproj
index b8e8001..42eb0f1 100644
--- a/matlab/mex/astra_mex_projector3d_vc11.vcxproj
+++ b/matlab/mex/astra_mex_projector3d_vc11.vcxproj
@@ -294,9 +294,11 @@
   <ItemGroup>
     <ClCompile Include="astra_mex_projector3d_c.cpp" />
     <ClCompile Include="mexHelpFunctions.cpp" />
+    <ClCompile Include="mexInitFunctions.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="mexHelpFunctions.h" />
+    <ClInclude Include="mexInitFunctions.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/matlab/mex/astra_mex_projector_c.cpp b/matlab/mex/astra_mex_projector_c.cpp
index 58cd953..204ba8e 100644
--- a/matlab/mex/astra_mex_projector_c.cpp
+++ b/matlab/mex/astra_mex_projector_c.cpp
@@ -34,6 +34,7 @@ $Id$
 
 #include <mex.h>
 #include "mexHelpFunctions.h"
+#include "mexInitFunctions.h"
 
 #include "astra/AstraObjectManager.h"
 #include "astra/Projector2D.h"
@@ -476,6 +477,8 @@ void mexFunction(int nlhs, mxArray* plhs[],
 		return;
 	}
 
+	initASTRAMex();
+
 	// SWITCH (MODE)
 	if (sMode == "create") {
 		astra_mex_projector_create(nlhs, plhs, nrhs, prhs);
diff --git a/matlab/mex/astra_mex_projector_vc09.vcproj b/matlab/mex/astra_mex_projector_vc09.vcproj
index c0a5cd8..05c207f 100644
--- a/matlab/mex/astra_mex_projector_vc09.vcproj
+++ b/matlab/mex/astra_mex_projector_vc09.vcproj
@@ -598,6 +598,14 @@
 			RelativePath=".\mexHelpFunctions.h"
 			>
 		</File>
+		<File
+			RelativePath=".\mexInitFunctions.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\mexInitFunctions.h"
+			>
+		</File>
 	</Files>
 	<Globals>
 	</Globals>
diff --git a/matlab/mex/astra_mex_projector_vc11.vcxproj b/matlab/mex/astra_mex_projector_vc11.vcxproj
index 03a574d..e944949 100644
--- a/matlab/mex/astra_mex_projector_vc11.vcxproj
+++ b/matlab/mex/astra_mex_projector_vc11.vcxproj
@@ -294,9 +294,11 @@
   <ItemGroup>
     <ClCompile Include="astra_mex_projector_c.cpp" />
     <ClCompile Include="mexHelpFunctions.cpp" />
+    <ClCompile Include="mexInitFunctions.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="mexHelpFunctions.h" />
+    <ClInclude Include="mexInitFunctions.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/matlab/mex/astra_mex_vc09.vcproj b/matlab/mex/astra_mex_vc09.vcproj
index 9615f53..e4d7d07 100644
--- a/matlab/mex/astra_mex_vc09.vcproj
+++ b/matlab/mex/astra_mex_vc09.vcproj
@@ -598,6 +598,14 @@
 			RelativePath=".\mexHelpFunctions.h"
 			>
 		</File>
+		<File
+			RelativePath=".\mexInitFunctions.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\mexInitFunctions.h"
+			>
+		</File>
 	</Files>
 	<Globals>
 	</Globals>
diff --git a/matlab/mex/astra_mex_vc11.vcxproj b/matlab/mex/astra_mex_vc11.vcxproj
index 04df41c..f1324b4 100644
--- a/matlab/mex/astra_mex_vc11.vcxproj
+++ b/matlab/mex/astra_mex_vc11.vcxproj
@@ -294,9 +294,11 @@
   <ItemGroup>
     <ClCompile Include="astra_mex_c.cpp" />
     <ClCompile Include="mexHelpFunctions.cpp" />
+    <ClCompile Include="mexInitFunctions.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="mexHelpFunctions.h" />
+    <ClInclude Include="mexInitFunctions.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/matlab/mex/mexInitFunctions.cpp b/matlab/mex/mexInitFunctions.cpp
new file mode 100644
index 0000000..d8a50d7
--- /dev/null
+++ b/matlab/mex/mexInitFunctions.cpp
@@ -0,0 +1,24 @@
+#include <mex.h>
+#include "astra/Logging.h"
+
+bool mexIsInitialized=false;
+
+/**
+ * Callback to print log message to Matlab window.
+ *
+ */
+void logCallBack(const char *msg, size_t len){
+    mexPrintf(msg);
+}
+
+/**
+ * Initialize mex functions.
+ *
+ */
+void initASTRAMex(){
+    if(mexIsInitialized) return;
+    if(!astra::CLogger::setCallbackScreen(&logCallBack)){
+        mexErrMsgTxt("Error initializing mex functions.");
+    }
+    mexIsInitialized=true;
+}
diff --git a/matlab/mex/mexInitFunctions.h b/matlab/mex/mexInitFunctions.h
new file mode 100644
index 0000000..f16e9c9
--- /dev/null
+++ b/matlab/mex/mexInitFunctions.h
@@ -0,0 +1,6 @@
+#ifndef _INC_ASTRA_MEX_INITFUNCTIONS
+#define _INC_ASTRA_MEX_INITFUNCTIONS
+
+void initASTRAMex();
+
+#endif
\ No newline at end of file
diff --git a/matlab/tools/astra_mex_log.m b/matlab/tools/astra_mex_log.m
new file mode 100644
index 0000000..28cfa18
--- /dev/null
+++ b/matlab/tools/astra_mex_log.m
@@ -0,0 +1,33 @@
+function [varargout] = astra_mex_log(varargin)
+%------------------------------------------------------------------------
+% Reference page in Help browser
+%    <a href="matlab:docsearch('astra_mex_log' )">astra_mex_log</a>.
+%------------------------------------------------------------------------
+%------------------------------------------------------------------------
+% This file is part of the ASTRA Toolbox
+% 
+% Copyright: 2010-2015, iMinds-Vision Lab, University of Antwerp
+%            2014-2015, CWI, Amsterdam
+% License: Open Source under GPLv3
+% Contact: astra@uantwerpen.be
+% Website: http://sf.net/projects/astra-toolbox
+%------------------------------------------------------------------------
+% $Id$
+if size(varargin,2)==2 && (strcmp(varargin{1},'debug') || strcmp(varargin{1},'info') || strcmp(varargin{1},'warn') || strcmp(varargin{1},'error'))
+    d = dbstack(1);
+    if size(d,1)==0
+        astra_mex_log_c(varargin{1},'Unknown',0,varargin{2})
+    else
+        astra_mex_log_c(varargin{1},d(1).file,d(1).line,varargin{2})
+    end
+else
+    if nargout == 0
+        astra_mex_log_c(varargin{:});
+        if exist('ans','var')
+            varargout{1} = ans;
+        end
+    else
+        varargout = cell(1,nargout);
+        [varargout{:}] = astra_mex_log_c(varargin{:});
+    end
+end
\ No newline at end of file