VAMatlabHelpers.cpp 17.2 KB
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/*
 *  --------------------------------------------------------------------------------------------
 *
 *    VVV        VVV A           Virtual Acoustics (VA) | http://www.virtualacoustics.org
 *     VVV      VVV AAA          Licensed under the Apache License, Version 2.0
 *      VVV    VVV   AAA
 *       VVV  VVV     AAA        Copyright 2015-2017
 *        VVVVVV       AAA       Institute of Technical Acoustics (ITA)
 *         VVVV         AAA      RWTH Aachen University
 *
 *  --------------------------------------------------------------------------------------------
 */

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#include "VAMatlabHelpers.h"

#include <VAException.h>

#include <algorithm>
#include <assert.h>
#include <cmath>
#include <sstream>
#include <stdint.h>

bool matlabIsScalar( const mxArray *A )
{
	mwSize s = mxGetNumberOfDimensions( A );

	// Es mssen zwei Dimensionen vorliegen
	if( s != 2 ) return false;
	const mwSize* d = mxGetDimensions( A );

	// Beide Dimensionen mssen 1 sein
	return ( ( d[ 0 ] == 1 ) && ( d[ 1 ] == 1 ) );
}

bool matlabIsVector( const mxArray *A, int& size )
{
	mwSize s = mxGetNumberOfDimensions( A );

	// Es mssen zwei Dimensionen vorliegen
	if( s != 2 ) return false;
	const mwSize* d = mxGetDimensions( A );

	// Mindestens eine der beiden Dimensionen muss 1 sein
	if( d[ 0 ] == 1 && d[ 1 ] > 1 )
	{
		size = ( int ) d[ 1 ];
		return true;
	}

	if( d[ 1 ] == 1 && d[ 0 ] > 1 )
	{
		size = ( int ) d[ 0 ];
		return true;
	}

	return false;
}

bool matlabIsVector( const mxArray *A ) {
	int iDummy;
	return matlabIsVector( A, iDummy );
}

bool matlabIsRowVector( const mxArray *A )
{
	mwSize s = mxGetNumberOfDimensions( A );
	if( s != 2 ) return false;
	const mwSize* d = mxGetDimensions( A );
	return ( d[ 0 ] == 1 );
}

bool matlabIsColumnVector( const mxArray *A )
{
	mwSize s = mxGetNumberOfDimensions( A );
	if( s != 2 ) return false;
	const mwSize* d = mxGetDimensions( A );
	return ( d[ 1 ] == 1 );
}

bool matlabGetBoolScalar( const mxArray* arg, const char* argname )
{
	const int buflen = 1024;
	char buf[ buflen ];

	if( mxIsLogicalScalar( arg ) )
	{
		mxLogical* p = mxGetLogicals( arg );
		return ( *p == true );
	}

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	if( mxIsNumeric( arg ) && !mxIsComplex( arg ) && matlabIsScalar( arg ) )
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	{
		void* p = mxGetData( arg );

		if( mxIsInt16( arg ) ) return ( *( ( int16_t* ) p ) != 0 );
		if( mxIsInt32( arg ) ) return ( *( ( int32_t* ) p ) != 0 );
		if( mxIsInt64( arg ) ) return ( *( ( int64_t* ) p ) != 0 );
		if( mxIsSingle( arg ) ) return ( *( ( float* ) p ) != 0 );
		if( mxIsDouble( arg ) ) return ( *( ( double* ) p ) != 0 );

		// Unsupported datatype
		sprintf_s( buf, buflen, "Argument '%s' could not be interpreted as a logical scalar", argname );
		VA_EXCEPT1( buf );
	}

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	if( mxIsChar( arg ) && matlabIsRowVector( arg ) )
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	{
		mxGetString( arg, buf, buflen );
		std::string s( buf );
		std::transform( s.begin(), s.end(), s.begin(), tolower );

		if( ( s == "true" ) || ( s == "yes" ) ) return true;
		if( ( s == "false" ) || ( s == "no" ) ) return false;

		// Unsupported datatype
		sprintf_s( buf, buflen, "Argument '%s' could not be interpreted as a logical scalar", argname );
		VA_EXCEPT1( buf );
		return false;
	}

	sprintf_s( buf, buflen, "Argument '%s' must be a logical scalar", argname );
	VA_EXCEPT1( buf );
}

int matlabGetIntegerScalar( const mxArray* arg, const char* argname )
{
	char buf[ 1024 ];

	if( mxIsNumeric( arg ) && !mxIsComplex( arg ) && matlabIsScalar( arg ) )
	{
		void* p = mxGetData( arg );

		if( mxIsInt16( arg ) ) return ( int ) ( *( ( int16_t* ) p ) );
		if( mxIsInt32( arg ) ) return ( int ) ( *( ( int32_t* ) p ) );
		if( mxIsInt64( arg ) ) return ( int ) ( *( ( int64_t* ) p ) );	// [fwe] Possible truncation!

		if( mxIsSingle( arg ) ) {
			float fValue = *( ( float* ) p );
			// Check for integer
			if( fValue == floor( fValue ) )
				return ( int ) fValue;
		}

		if( mxIsDouble( arg ) ) {
			double dValue = *( ( double* ) p );
			// Check for integer
			if( dValue == floor( dValue ) )
				return ( int ) dValue; // [fwe] Possible truncation!
		}

		// Unsupported datatype
		sprintf_s( buf, 1024, "Argument '%s' could not be interpreted as an integer scalar", argname );
		VA_EXCEPT1( buf );
	}

	sprintf_s( buf, 1024, "Argument '%s' must be an integer scalar", argname );
	VA_EXCEPT1( buf );
}

double matlabGetRealScalar( const mxArray* arg, const char* argname )
{
	char buf[ 1024 ];

	bool b1 = mxIsNumeric( arg );
	bool b2 = !mxIsComplex( arg );
	bool b3 = matlabIsScalar( arg );
	if( b1 && b2 && b3 )
	{
		void* p = mxGetData( arg );

		if( mxIsInt16( arg ) ) return ( double ) ( *( ( int16_t* ) p ) );
		if( mxIsInt32( arg ) ) return ( double ) ( *( ( int32_t* ) p ) );
		if( mxIsInt64( arg ) ) return ( double ) ( *( ( int64_t* ) p ) );	// [fwe] Possible truncation!

		if( mxIsSingle( arg ) ) return *( ( float* ) p );
		if( mxIsDouble( arg ) ) return *( ( double* ) p );

		// Unsupported datatype
		sprintf_s( buf, 1024, "Argument '%s' could not be interpreted as a real-valued scalar", argname );
		VA_EXCEPT1( buf );
	}

	sprintf_s( buf, 1024, "Argument '%s' must be a real-valued scalar", argname );
	VA_EXCEPT1( buf );
}

void matlabGetRealVector3( const mxArray* arg, const char* argname, double& x, double& y, double& z )
{
	char buf[ 1024 ];
	int size;

	if( mxIsNumeric( arg ) && !mxIsComplex( arg ) && matlabIsVector( arg, size ) )
		if( size == 3 ) {

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			if( mxIsInt16( arg ) ) {
				int16_t* p = ( int16_t* ) mxGetData( arg );
				x = ( double ) p[ 0 ];
				y = ( double ) p[ 1 ];
				z = ( double ) p[ 2 ];
				return;
			}
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			if( mxIsInt32( arg ) ) {
				int32_t* p = ( int32_t* ) mxGetData( arg );
				x = ( double ) p[ 0 ];
				y = ( double ) p[ 1 ];
				z = ( double ) p[ 2 ];
				return;
			}
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			if( mxIsInt64( arg ) ) {
				int64_t* p = ( int64_t* ) mxGetData( arg );
				x = ( double ) p[ 0 ];
				y = ( double ) p[ 1 ];
				z = ( double ) p[ 2 ];
				return;
			}
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			if( mxIsSingle( arg ) ) {
				float* p = ( float* ) mxGetData( arg );
				x = ( double ) p[ 0 ];
				y = ( double ) p[ 1 ];
				z = ( double ) p[ 2 ];
				return;
			}
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			if( mxIsDouble( arg ) ) {
				double* p = ( double* ) mxGetData( arg );
				x = p[ 0 ];
				y = p[ 1 ];
				z = p[ 2 ];
				return;
			}
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		}

	sprintf_s( buf, 1024, "Argument '%s' must be a real-valued vector with exactly three elements", argname );
	VA_EXCEPT1( buf );
}

void matlabGetQuaternion( const mxArray* arg, const char* argname, double& w, double& i, double& j, double& k )
{
	char buf[ 1024 ];
	int size;

	if( mxIsNumeric( arg ) && !mxIsComplex( arg ) && matlabIsVector( arg, size ) )
	{
		if( size == 4 )
		{

			if( mxIsInt16( arg ) ) {
				int16_t* p = ( int16_t* ) mxGetData( arg );
				w = ( double ) p[ 0 ];
				i = ( double ) p[ 1 ];
				j = ( double ) p[ 2 ];
				k = ( double ) p[ 3 ];
				return;
			}

			if( mxIsInt32( arg ) ) {
				int32_t* p = ( int32_t* ) mxGetData( arg );
				w = ( double ) p[ 0 ];
				i = ( double ) p[ 1 ];
				j = ( double ) p[ 2 ];
				k = ( double ) p[ 3 ];
				return;
			}

			if( mxIsInt64( arg ) ) {
				int64_t* p = ( int64_t* ) mxGetData( arg );
				w = ( double ) p[ 0 ];
				i = ( double ) p[ 1 ];
				j = ( double ) p[ 2 ];
				k = ( double ) p[ 3 ];
				return;
			}

			if( mxIsSingle( arg ) ) {
				float* p = ( float* ) mxGetData( arg );
				w = ( double ) p[ 0 ];
				i = ( double ) p[ 1 ];
				j = ( double ) p[ 2 ];
				k = ( double ) p[ 3 ];
				return;
			}

			if( mxIsDouble( arg ) ) {
				double* p = ( double* ) mxGetData( arg );
				w = ( double ) p[ 0 ];
				i = ( double ) p[ 1 ];
				j = ( double ) p[ 2 ];
				k = ( double ) p[ 3 ];
				return;
			}
		}
	}

	sprintf_s( buf, 1024, "Argument '%s' must be a real-valued vector with exactly four elements (same order as Matlab quaternion: w (real), i, j, k)", argname );
	VA_EXCEPT1( buf );
}

std::string matlabGetString( const mxArray* arg, const char* argname )
{
	const int buflen = 1024;
	char buf[ buflen ];

	// TODO: [fwe] Diese Implementierung ist begrenzt in der Lnge. Sollte man dynamisch machen...

	// Test auf Zeichenfolge
	if( mxIsChar( arg ) )
	{
		// Spezialfall: Leere Eingabe
		if( mxIsEmpty( arg ) ) return std::string();

		if( matlabIsRowVector( arg ) )
		{
			mxGetString( arg, buf, buflen );
			return buf;
		}
	}

	sprintf_s( buf, 1024, "Argument '%s' must be a string", argname );
	VA_EXCEPT1( buf );
}

mxArray* matlabCreateRealVector3( double x, double y, double z )
{
	mxArray* p = mxCreateDoubleMatrix( 3, 1, mxREAL );
	double* d = mxGetPr( p );
	d[ 0 ] = x;
	d[ 1 ] = y;
	d[ 2 ] = z;
	return p;
}

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mxArray* matlabCreateID( int iID )
{
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	mwSize d[ 2 ] = { 1, 1 };
	mxArray* p = mxCreateNumericArray( 2, d, mxINT32_CLASS, mxREAL );
	*( ( int* ) mxGetData( p ) ) = iID;
	return p;
}

mxArray* matlabCreateIDList( const std::vector<int>& viID )
{
	if( viID.empty() )
	{
		// Special case: Handle empty matrix as 0x0 => Matlab convenience :-}
		return mxCreateNumericMatrix( 0, 0, mxINT32_CLASS, mxREAL );
	}
	else {
		mxArray* a = mxCreateNumericMatrix( 1, int( viID.size() ), mxINT32_CLASS, mxREAL );
		int* p = ( int* ) mxGetData( a );
		for( size_t i = 0; i < viID.size(); i++ ) p[ i ] = viID[ i ];
		return a;
	}
}

mxArray* matlabCreateDirectivityInfo( const CVADirectivityInfo& di )
{
	const mwSize nFields = 5;
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	const char* ppszFieldNames[] = { "id", "name", "class", "description", "references" };
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	mxArray* pStruct = mxCreateStructMatrix( 1, 1, nFields, ppszFieldNames );
	mxSetField( pStruct, 0, ppszFieldNames[ 0 ], matlabCreateID( di.iID ) );
	mxSetField( pStruct, 0, ppszFieldNames[ 1 ], mxCreateString( di.sName.c_str() ) );
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	mxSetField( pStruct, 0, ppszFieldNames[ 2 ], matlabCreateID( di.iClass ) );
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	mxSetField( pStruct, 0, ppszFieldNames[ 3 ], mxCreateString( di.sDesc.c_str() ) );
	mxSetField( pStruct, 0, ppszFieldNames[ 4 ], mxCreateDoubleScalar( di.iReferences ) ); // no of references as double-value in matlab

	return pStruct;
}

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mxArray* matlabCreateSignalSourceInfo( const CVASignalSourceInfo& ssi )
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{
	const mwSize nFields = 6;
	const char* ppszFieldNames[] = { "id", "type", "name", "description", "state", "references" };

	mxArray* pStruct = mxCreateStructMatrix( 1, 1, nFields, ppszFieldNames );
	mxSetField( pStruct, 0, ppszFieldNames[ 0 ], mxCreateString( ssi.sID.c_str() ) );
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	mxSetField( pStruct, 0, ppszFieldNames[ 1 ], mxCreateDoubleScalar( ssi.iType ) );
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	mxSetField( pStruct, 0, ppszFieldNames[ 2 ], mxCreateString( ssi.sName.c_str() ) );
	mxSetField( pStruct, 0, ppszFieldNames[ 3 ], mxCreateString( ssi.sDesc.c_str() ) );
	mxSetField( pStruct, 0, ppszFieldNames[ 4 ], mxCreateString( ssi.sState.c_str() ) );
	mxSetField( pStruct, 0, ppszFieldNames[ 5 ], mxCreateDoubleScalar( ssi.iReferences ) ); // no of references as double-value in matlab

	return pStruct;
}

mxArray* matlabCreateSceneInfo( const CVASceneInfo& sci )
{

	const mwSize nFields = 2;
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	const char* ppszFieldNames[] = { "id", "name" };
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	mxArray* pStruct = mxCreateStructMatrix( 1, 1, nFields, ppszFieldNames );
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	mxSetField( pStruct, 0, ppszFieldNames[ 0 ], mxCreateString( sci.sID.c_str() ) );
	mxSetField( pStruct, 0, ppszFieldNames[ 0 ], mxCreateString( sci.sName.c_str() ) );
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	return pStruct;
}

mxArray* matlabCreateStruct( const CVAStruct& oStruct )
{
	std::vector< const char* > vcpFieldNames;
	CVAStruct::const_iterator it = oStruct.Begin();
	while( it != oStruct.End() )
	{
		const std::string sKey( ( *it ).first );
		char* cFieldName = _strdup( sKey.c_str() );
		vcpFieldNames.push_back( cFieldName );
		it++;
	}

	const size_t nDims = 1;
	const int nFields = int( vcpFieldNames.size() );
	const char** ppszFieldNames = &( *vcpFieldNames.begin() );
	mxArray* pStruct = mxCreateStructArray( 1, &nDims, nFields, ppszFieldNames );

	for( size_t i = 0; i < nFields; i++ )
	{
		const std::string sFieldName( vcpFieldNames[ i ] );
		assert( oStruct.HasKey( sFieldName ) );

		const CVAStructValue* pStructValue( oStruct.GetValue( sFieldName ) );

		mxArray* p;
		int iType = pStructValue->GetDatatype();
		switch( iType )
		{
		case CVAStructValue::BOOL:
		{
			mxSetField( pStruct, 0, sFieldName.c_str(), mxCreateLogicalScalar( *pStructValue ) );
			break;
		}
		case CVAStructValue::INT:
		{
			size_t iVal = 1;
			p = mxCreateNumericArray( 1, &iVal, mxINT32_CLASS, mxREAL );
			*( ( int* ) mxGetData( p ) ) = *pStructValue;
			mxSetField( pStruct, 0, sFieldName.c_str(), p );
			break;
		}
		case CVAStructValue::DOUBLE:
		{
			mxSetField( pStruct, 0, sFieldName.c_str(), mxCreateDoubleScalar( *pStructValue ) );
			break;
		}
		case CVAStructValue::STRING:
		{
			std::string s = *pStructValue;
			mxSetField( pStruct, 0, sFieldName.c_str(), mxCreateString( s.c_str() ) );
			break;
		}
		case CVAStructValue::STRUCT:
		{
			mxSetField( pStruct, 0, sFieldName.c_str(), matlabCreateStruct( *pStructValue ) );
			break;
		}
		case CVAStructValue::DATA:
		{
			int nSamples = int( pStructValue->GetDataSize() / 4 );
			size_t nDims[ 2 ] = { 1, nSamples };
			p = mxCreateNumericArray( 2, nDims, mxSINGLE_CLASS, mxREAL );
			mxSetField( pStruct, 0, sFieldName.c_str(), p );
			const float* pfSrcData = ( const float* ) ( pStructValue->GetData() );
			float* pfDestData = ( float* ) mxGetPr( p );
			for( size_t n = 0; n < nSamples; n++ )
				pfDestData[ n ] = pfSrcData[ n ];

			break;
		}
		default:
		{
			VA_EXCEPT2( INVALID_PARAMETER, "Could not read VAStruct value at key '" + sFieldName + "'" );
		}
		}

		delete vcpFieldNames[ i ];
	}

	return pStruct;
}

CVAStruct matlabGetStruct( const mxArray* pa, const char* argname )
{
	if( !mxIsStruct( pa ) )
		VA_EXCEPT2( INVALID_PARAMETER, "Argument is not a Matlab struct: " + std::string( argname ) );

	CVAStruct oRet;

	size_t nStructElements = mxGetNumberOfElements( pa );
	if( nStructElements != 1 )
		VA_EXCEPT2( INVALID_PARAMETER, "Only a single struct can be passed as argument" );

	int nNumFields = mxGetNumberOfFields( pa );
	for( size_t i = 0; i < nNumFields; i++ )
	{
		std::string sFieldName( mxGetFieldNameByNumber( pa, int( i ) ) );
		mxArray* pVal = mxGetFieldByNumber( pa, 0, int( i ) );

		if( pVal == nullptr )
			VA_EXCEPT2( INVALID_PARAMETER, "Could not resolve value of struct field '" + sFieldName + "'" );

		if( mxIsStruct( pVal ) )
		{
			oRet[ sFieldName ] = matlabGetStruct( pVal, sFieldName.c_str() );
			continue;
		}

		std::string sClassName( mxGetClassName( pVal ) );

		if( sClassName == "itaAudio" )
		{
			mxArray* pITAAudio( pVal );

			if( mxGetNumberOfElements( pITAAudio ) != 1 )
				VA_EXCEPT2( INVALID_PARAMETER, "only single itaAudio instances allowed" );

			mxArray* pITAAudioDomain = mxGetProperty( pITAAudio, 0, "domain" );
			if( pITAAudioDomain == nullptr )
				continue;

			std::string sDomain = matlabGetString( pITAAudioDomain, "domain" );
			if( sDomain != "time" )
				VA_EXCEPT2( INVALID_PARAMETER, "itaAudio objects has to be in time domain. In Matlab, do myitaaudio.' to convert from frequency domain to time domain." );

			mxArray* pITAAudioTimeData = mxGetProperty( pITAAudio, 0, "timeData" );
			if( pITAAudioTimeData == nullptr )
				VA_EXCEPT2( INVALID_PARAMETER, "itaAudio objects has no timeData." );

			size_t nChannels = size_t( mxGetN( pITAAudioTimeData ) );
			size_t nSamples = size_t( mxGetM( pITAAudioTimeData ) );
			size_t iOffset = 0;
			for( size_t n = 0; n < nChannels; n++ )
			{
				std::stringstream ssChannelName;
				ssChannelName << "IRDataCh" << n + 1; // Naming convention for IR data to a Renderer
				std::string sChannelName( ssChannelName.str() );

				mxArray* pChannelData = pITAAudioTimeData; // use offsset to access data

				iOffset += n * nSamples;

				std::vector< float > vfData( nSamples );
				if( mxIsSingle( pChannelData ) )
					for( size_t i = 0; i < nSamples; i++ )
						vfData[ i ] = ( ( float* ) mxGetData( pChannelData ) )[ i + iOffset ];
				if( mxIsDouble( pChannelData ) )
					for( size_t i = 0; i < nSamples; i++ )
						vfData[ i ] = float( ( ( double* ) mxGetData( pChannelData ) )[ i + iOffset ] );
				else
					VA_EXCEPT1( "Unsupported array data format, could not create VAStruct from this struct" );

				assert( !oRet.HasKey( sChannelName ) );
				oRet[ sChannelName ] = CVAStructValue( &vfData[ 0 ], int( sizeof( float ) * nSamples ) );
			}

			continue; // next field
		}

		if( mxIsNumeric( pVal ) ) // int or double
		{
			if( mxIsComplex( pVal ) )
				VA_EXCEPT2( INVALID_PARAMETER, "Complex values are not supported in VAStruct" );

			int iSize;
			if( matlabIsVector( pVal, iSize ) )
			{
				if( iSize <= 0 )
					VA_EXCEPT1( "Invalid size of matlab vector" );

				std::vector< float > vfData( iSize );
				if( mxIsSingle( pVal ) )
					for( int i = 0; i < iSize; i++ )
						vfData[ i ] = ( ( float* ) mxGetData( pVal ) )[ i ];
				if( mxIsDouble( pVal ) )
					for( int i = 0; i < iSize; i++ )
						vfData[ i ] = float( ( ( double* ) mxGetData( pVal ) )[ i ] );
				else
					VA_EXCEPT1( "Unsupported array data format, could not create VAStruct from this struct" );

				oRet[ sFieldName ] = CVAStructValue( &vfData[ 0 ], sizeof( float ) * iSize );
			}
			else if( mxIsInt16( pVal ) || mxIsInt32( pVal ) || mxIsInt64( pVal ) )
			{
				oRet[ sFieldName ] = int( matlabGetIntegerScalar( pVal, sFieldName.c_str() ) );
			}
			else
			{
				oRet[ sFieldName ] = double( matlabGetRealScalar( pVal, sFieldName.c_str() ) );
			}
		}
		else if( mxIsLogicalScalar( pVal ) )
		{
			mxLogical* p = mxGetLogicals( pVal );
			oRet[ sFieldName ] = bool( *p );
		}
		else if( mxIsChar( pVal ) )
		{
			oRet[ sFieldName ] = std::string( matlabGetString( pVal, sFieldName.c_str() ) );
		}
		else
		{
			VA_EXCEPT2( INVALID_PARAMETER, "Unkown type in field '" + sFieldName + "'" );
		}
	}

	return oRet;
}