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Diffstat (limited to 'plugins/AdvaImg/src/FreeImageToolkit/Resize.h')
| -rw-r--r-- | plugins/AdvaImg/src/FreeImageToolkit/Resize.h | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/plugins/AdvaImg/src/FreeImageToolkit/Resize.h b/plugins/AdvaImg/src/FreeImageToolkit/Resize.h deleted file mode 100644 index 466fcc183d..0000000000 --- a/plugins/AdvaImg/src/FreeImageToolkit/Resize.h +++ /dev/null @@ -1,196 +0,0 @@ -// ========================================================== -// Upsampling / downsampling classes -// -// Design and implementation by -// - Hervé Drolon (drolon@infonie.fr) -// - Detlev Vendt (detlev.vendt@brillit.de) -// - Carsten Klein (cklein05@users.sourceforge.net) -// -// 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 FIT_BITMAP buffers, WORD buffers (FIT_UINT16, FIT_RGB16, FIT_RGBA16) - and float buffers (FIT_FLOAT, FIT_RGBF, FIT_RGBAF).<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 - @param filter FIR /IIR filter to be used - */ - CResizeEngine(CGenericFilter* filter):m_pFilter(filter) {} - - /// Destructor - virtual ~CResizeEngine() {} - - /** Scale an image to the desired dimensions. - - Method CResizeEngine::scale, as well as the two filtering methods - CResizeEngine::horizontalFilter and CResizeEngine::verticalFilter take - four additional parameters, that define a rectangle in the source - image to be rescaled. - - These are src_left, src_top, src_width and src_height and should work - like these of function FreeImage_Copy. However, src_left and src_top are - actually named src_offset_x and src_offset_y in the filtering methods. - - Additionally, since src_height and dst_height are always the same for - method horizontalFilter as src_width and dst_width are always the same - for verticalFilter, these have been stripped down to a single parameter - height and width for horizontalFilter and verticalFilter respectively. - - Currently, method scale is called with the actual size of the source - image. However, in a future version, we could provide a new function - called FreeImage_RescaleRect that rescales only part of an image. - - @param src Pointer to the source image - @param dst_width Destination image width - @param dst_height Destination image height - @param src_left Left boundary of the source rectangle to be scaled - @param src_top Top boundary of the source rectangle to be scaled - @param src_width Width of the source rectangle to be scaled - @param src_height Height of the source rectangle to be scaled - @return Returns the scaled image if successful, returns NULL otherwise - */ - FIBITMAP* scale(FIBITMAP *src, unsigned dst_width, unsigned dst_height, unsigned src_left, unsigned src_top, unsigned src_width, unsigned src_height, unsigned flags); - -private: - - /** - Performs horizontal image filtering - - @param src Source image - @param height Source / Destination image height - @param src_width Source image width - @param src_offset_x - @param src_offset_y - @param src_pal - @param dst Destination image - @param dst_width Destination image width - */ - void horizontalFilter(FIBITMAP * const src, const unsigned height, const unsigned src_width, - const unsigned src_offset_x, const unsigned src_offset_y, const RGBQUAD * const src_pal, - FIBITMAP * const dst, const unsigned dst_width); - - /** - Performs vertical image filtering - @param src Source image - @param width Source / Destination image width - @param src_height Source image height - @param src_offset_x - @param src_offset_y - @param src_pal - @param dst Destination image - @param dst_height Destination image height - */ - void verticalFilter(FIBITMAP * const src, const unsigned width, const unsigned src_height, - const unsigned src_offset_x, const unsigned src_offset_y, const RGBQUAD * const src_pal, - FIBITMAP * const dst, const unsigned dst_height); -}; - -#endif // _RESIZE_H_ |