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Diffstat (limited to 'plugins/FreeImage/Source/FreeImageToolkit/Resize.h')
| -rw-r--r-- | plugins/FreeImage/Source/FreeImageToolkit/Resize.h | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/plugins/FreeImage/Source/FreeImageToolkit/Resize.h b/plugins/FreeImage/Source/FreeImageToolkit/Resize.h deleted file mode 100644 index 0d5d0b451a..0000000000 --- a/plugins/FreeImage/Source/FreeImageToolkit/Resize.h +++ /dev/null @@ -1,145 +0,0 @@ -// ========================================================== -// Upsampling / downsampling classes -// -// Design and implementation by -// - Hervé Drolon (drolon@infonie.fr) -// - Detlev Vendt (detlev.vendt@brillit.de) -// -// This file is part of FreeImage 3 -// -// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY -// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES -// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE -// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED -// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT -// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY -// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL -// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER -// THIS DISCLAIMER. -// -// Use at your own risk! -// ========================================================== - -#ifndef _RESIZE_H_ -#define _RESIZE_H_ - -#include "FreeImage.h" -#include "Utilities.h" -#include "Filters.h" - -/** - Filter weights table.<br> - This class stores contribution information for an entire line (row or column). -*/ -class CWeightsTable -{ -/** - Sampled filter weight table.<br> - Contribution information for a single pixel -*/ -typedef struct { - /// Normalized weights of neighboring pixels - double *Weights; - /// Bounds of source pixels window - unsigned Left, Right; -} Contribution; - -private: - /// Row (or column) of contribution weights - Contribution *m_WeightTable; - /// Filter window size (of affecting source pixels) - unsigned m_WindowSize; - /// Length of line (no. of rows / cols) - unsigned m_LineLength; - -public: - /** - Constructor<br> - Allocate and compute the weights table - @param pFilter Filter used for upsampling or downsampling - @param uDstSize Length (in pixels) of the destination line buffer - @param uSrcSize Length (in pixels) of the source line buffer - */ - CWeightsTable(CGenericFilter *pFilter, unsigned uDstSize, unsigned uSrcSize); - - /** - Destructor<br> - Destroy the weights table - */ - ~CWeightsTable(); - - /** Retrieve a filter weight, given source and destination positions - @param dst_pos Pixel position in destination line buffer - @param src_pos Pixel position in source line buffer - @return Returns the filter weight - */ - double getWeight(unsigned dst_pos, unsigned src_pos) { - return m_WeightTable[dst_pos].Weights[src_pos]; - } - - /** Retrieve left boundary of source line buffer - @param dst_pos Pixel position in destination line buffer - @return Returns the left boundary of source line buffer - */ - unsigned getLeftBoundary(unsigned dst_pos) { - return m_WeightTable[dst_pos].Left; - } - - /** Retrieve right boundary of source line buffer - @param dst_pos Pixel position in destination line buffer - @return Returns the right boundary of source line buffer - */ - unsigned getRightBoundary(unsigned dst_pos) { - return m_WeightTable[dst_pos].Right; - } -}; - -// --------------------------------------------- - -/** - CResizeEngine<br> - This class performs filtered zoom. It scales an image to the desired dimensions with - any of the CGenericFilter derived filter class.<br> - It works with 8-, 24- and 32-bit buffers.<br><br> - - <b>References</b> : <br> - [1] Paul Heckbert, C code to zoom raster images up or down, with nice filtering. - UC Berkeley, August 1989. [online] http://www-2.cs.cmu.edu/afs/cs.cmu.edu/Web/People/ph/heckbert.html - [2] Eran Yariv, Two Pass Scaling using Filters. The Code Project, December 1999. - [online] http://www.codeproject.com/bitmap/2_pass_scaling.asp - -*/ -class CResizeEngine -{ -private: - /// Pointer to the FIR / IIR filter - CGenericFilter* m_pFilter; - -public: - - /// Constructor - CResizeEngine(CGenericFilter* filter):m_pFilter(filter) {} - - /// Destructor - virtual ~CResizeEngine() {} - - /** Scale an image to the desired dimensions - @param src Pointer to the source image - @param dst_width Destination image width - @param dst_height Destination image height - @return Returns the scaled image if successful, returns NULL otherwise - */ - FIBITMAP* scale(FIBITMAP *src, unsigned dst_width, unsigned dst_height); - -private: - - /// Performs horizontal image filtering - void horizontalFilter(FIBITMAP *src, unsigned src_width, unsigned src_height, FIBITMAP *dst, unsigned dst_width, unsigned dst_height); - - /// Performs vertical image filtering - void verticalFilter(FIBITMAP *src, unsigned src_width, unsigned src_height, FIBITMAP *dst, unsigned dst_width, unsigned dst_height); -}; - - - -#endif // _RESIZE_H_ |