[Hdrflow-svn] SF.net SVN: hdrflow: [396] trunk/lib/extras/src/lut/lut.cpp

[<gl...@us...>]

Revision: 396
          http://hdrflow.svn.sourceforge.net/hdrflow/?rev=396&view=rev
Author:   glslang
Date:     2008-01-05 13:59:16 -0800 (Sat, 05 Jan 2008)

Log Message:
-----------
+ sRGB lut

Modified Paths:
--------------
    trunk/lib/extras/src/lut/lut.cpp

Modified: trunk/lib/extras/src/lut/lut.cpp
===================================================================
--- trunk/lib/extras/src/lut/lut.cpp	2008-01-05 21:43:59 UTC (rev 395)
+++ trunk/lib/extras/src/lut/lut.cpp	2008-01-05 21:59:16 UTC (rev 396)
@@ -18,6 +18,39 @@
 
 namespace hdrflow {
 
+namespace
+{
+	typedef float ( *unary_float )( float );
+	
+	template<typename T, typename F>
+	void fill_3( il::image_type_ptr im, F fn )
+	{
+		int width = im->width( );
+		int height = im->height( );
+		int depth = im->depth( );
+		int pitch = im->pitch( );
+	
+		const float sx = 1.0f / ( width - 1.0f );
+		
+		T* src = reinterpret_cast<T*>( im->data( ) );
+				
+		for( int i = 0; i < depth; ++i )
+		{
+			for( int j = 0; j < height; ++j )
+			{
+				for( int k = 0; k < width; ++k )
+				{
+					src[ k + 0 ] = static_cast<T>( fn( k * sx ) );
+					src[ k + 1 ] = static_cast<T>( fn( k * sx ) );
+					src[ k + 2 ] = static_cast<T>( fn( k * sx ) );
+				}
+				
+				src += pitch;
+			}
+		}
+	}
+}
+
 class ML_PLUGIN_DECLSPEC lut_input : public ml::input_type
 {
 public:
@@ -105,33 +138,11 @@
 		pl::wstring pf = prop_colourspace_.value<pl::wstring>( );
 		pl::wstring fn = prop_function_.value<pl::wstring>( );
 		
-		int width = im->width( );
-		int height = im->height( );
-		int depth = im->depth( );
-		int pitch = im->pitch( );
-	
-		const float sx = 1.0f / ( width - 1.0f );
-		
 		if( fn == L"sRGB" )
 		{
 			if( pf == L"r32g32b32f" )
 			{
-				float* src = reinterpret_cast<float*>( im->data( ) );
-				
-				for( int i = 0; i < depth; ++i )
-				{
-					for( int j = 0; j < height; ++j )
-					{
-						for( int k = 0; k < width; ++k )
-						{
-							src[ k + 0 ] = il::to_sRGB( k * sx );
-							src[ k + 1 ] = il::to_sRGB( k * sx );
-							src[ k + 2 ] = il::to_sRGB( k * sx );
-						}
-						
-						src += pitch;
-					}
-				}
+				fill_3<float, unary_float>( im, il::to_sRGB );
 			}
 		}
 	}


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