diff options
Diffstat (limited to 'plugins/AdvaImg/src/FreeImageToolkit/Rescale.cpp')
-rw-r--r-- | plugins/AdvaImg/src/FreeImageToolkit/Rescale.cpp | 338 |
1 files changed, 169 insertions, 169 deletions
diff --git a/plugins/AdvaImg/src/FreeImageToolkit/Rescale.cpp b/plugins/AdvaImg/src/FreeImageToolkit/Rescale.cpp index ffe667e7d4..0c8bbc2787 100644 --- a/plugins/AdvaImg/src/FreeImageToolkit/Rescale.cpp +++ b/plugins/AdvaImg/src/FreeImageToolkit/Rescale.cpp @@ -1,169 +1,169 @@ -// ==========================================================
-// Upsampling / downsampling routine
-//
-// Design and implementation by
-// - Hervé Drolon (drolon@infonie.fr)
-// - 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!
-// ==========================================================
-
-#include "Resize.h"
-
-FIBITMAP * DLL_CALLCONV
-FreeImage_Rescale(FIBITMAP *src, int dst_width, int dst_height, FREE_IMAGE_FILTER filter) {
- FIBITMAP *dst = NULL;
-
- if (!FreeImage_HasPixels(src) || (dst_width <= 0) || (dst_height <= 0) || (FreeImage_GetWidth(src) <= 0) || (FreeImage_GetHeight(src) <= 0)) {
- return NULL;
- }
-
- // select the filter
- CGenericFilter *pFilter = NULL;
- switch (filter) {
- case FILTER_BOX:
- pFilter = new(std::nothrow) CBoxFilter();
- break;
- case FILTER_BICUBIC:
- pFilter = new(std::nothrow) CBicubicFilter();
- break;
- case FILTER_BILINEAR:
- pFilter = new(std::nothrow) CBilinearFilter();
- break;
- case FILTER_BSPLINE:
- pFilter = new(std::nothrow) CBSplineFilter();
- break;
- case FILTER_CATMULLROM:
- pFilter = new(std::nothrow) CCatmullRomFilter();
- break;
- case FILTER_LANCZOS3:
- pFilter = new(std::nothrow) CLanczos3Filter();
- break;
- }
-
- if (!pFilter) {
- return NULL;
- }
-
- CResizeEngine Engine(pFilter);
-
- dst = Engine.scale(src, dst_width, dst_height, 0, 0,
- FreeImage_GetWidth(src), FreeImage_GetHeight(src));
-
- delete pFilter;
-
- // copy metadata from src to dst
- FreeImage_CloneMetadata(dst, src);
-
- return dst;
-}
-
-FIBITMAP * DLL_CALLCONV
-FreeImage_MakeThumbnail(FIBITMAP *dib, int max_pixel_size, BOOL convert) {
- FIBITMAP *thumbnail = NULL;
- int new_width, new_height;
-
- if(!FreeImage_HasPixels(dib) || (max_pixel_size <= 0)) return NULL;
-
- int width = FreeImage_GetWidth(dib);
- int height = FreeImage_GetHeight(dib);
-
- if(max_pixel_size == 0) max_pixel_size = 1;
-
- if((width < max_pixel_size) && (height < max_pixel_size)) {
- // image is smaller than the requested thumbnail
- return FreeImage_Clone(dib);
- }
-
- if(width > height) {
- new_width = max_pixel_size;
- // change image height with the same ratio
- double ratio = ((double)new_width / (double)width);
- new_height = (int)(height * ratio + 0.5);
- if(new_height == 0) new_height = 1;
- } else {
- new_height = max_pixel_size;
- // change image width with the same ratio
- double ratio = ((double)new_height / (double)height);
- new_width = (int)(width * ratio + 0.5);
- if(new_width == 0) new_width = 1;
- }
-
- const FREE_IMAGE_TYPE image_type = FreeImage_GetImageType(dib);
-
- // perform downsampling using a bilinear interpolation
-
- switch(image_type) {
- case FIT_BITMAP:
- case FIT_UINT16:
- case FIT_RGB16:
- case FIT_RGBA16:
- case FIT_FLOAT:
- case FIT_RGBF:
- case FIT_RGBAF:
- {
- FREE_IMAGE_FILTER filter = FILTER_BILINEAR;
- thumbnail = FreeImage_Rescale(dib, new_width, new_height, filter);
- }
- break;
-
- case FIT_INT16:
- case FIT_UINT32:
- case FIT_INT32:
- case FIT_DOUBLE:
- case FIT_COMPLEX:
- default:
- // cannot rescale this kind of image
- thumbnail = NULL;
- break;
- }
-
- if((thumbnail != NULL) && (image_type != FIT_BITMAP) && convert) {
- // convert to a standard bitmap
- FIBITMAP *bitmap = NULL;
- switch(image_type) {
- case FIT_UINT16:
- bitmap = FreeImage_ConvertTo8Bits(thumbnail);
- break;
- case FIT_RGB16:
- bitmap = FreeImage_ConvertTo24Bits(thumbnail);
- break;
- case FIT_RGBA16:
- bitmap = FreeImage_ConvertTo32Bits(thumbnail);
- break;
- case FIT_FLOAT:
- bitmap = FreeImage_ConvertToStandardType(thumbnail, TRUE);
- break;
- case FIT_RGBF:
- bitmap = FreeImage_ToneMapping(thumbnail, FITMO_DRAGO03);
- break;
- case FIT_RGBAF:
- // no way to keep the transparency yet ...
- FIBITMAP *rgbf = FreeImage_ConvertToRGBF(thumbnail);
- bitmap = FreeImage_ToneMapping(rgbf, FITMO_DRAGO03);
- FreeImage_Unload(rgbf);
- break;
- }
- if(bitmap != NULL) {
- FreeImage_Unload(thumbnail);
- thumbnail = bitmap;
- }
- }
-
- // copy metadata from src to dst
- FreeImage_CloneMetadata(thumbnail, dib);
-
- return thumbnail;
-}
+// ========================================================== +// Upsampling / downsampling routine +// +// Design and implementation by +// - Hervé Drolon (drolon@infonie.fr) +// - 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! +// ========================================================== + +#include "Resize.h" + +FIBITMAP * DLL_CALLCONV +FreeImage_Rescale(FIBITMAP *src, int dst_width, int dst_height, FREE_IMAGE_FILTER filter) { + FIBITMAP *dst = NULL; + + if (!FreeImage_HasPixels(src) || (dst_width <= 0) || (dst_height <= 0) || (FreeImage_GetWidth(src) <= 0) || (FreeImage_GetHeight(src) <= 0)) { + return NULL; + } + + // select the filter + CGenericFilter *pFilter = NULL; + switch (filter) { + case FILTER_BOX: + pFilter = new(std::nothrow) CBoxFilter(); + break; + case FILTER_BICUBIC: + pFilter = new(std::nothrow) CBicubicFilter(); + break; + case FILTER_BILINEAR: + pFilter = new(std::nothrow) CBilinearFilter(); + break; + case FILTER_BSPLINE: + pFilter = new(std::nothrow) CBSplineFilter(); + break; + case FILTER_CATMULLROM: + pFilter = new(std::nothrow) CCatmullRomFilter(); + break; + case FILTER_LANCZOS3: + pFilter = new(std::nothrow) CLanczos3Filter(); + break; + } + + if (!pFilter) { + return NULL; + } + + CResizeEngine Engine(pFilter); + + dst = Engine.scale(src, dst_width, dst_height, 0, 0, + FreeImage_GetWidth(src), FreeImage_GetHeight(src)); + + delete pFilter; + + // copy metadata from src to dst + FreeImage_CloneMetadata(dst, src); + + return dst; +} + +FIBITMAP * DLL_CALLCONV +FreeImage_MakeThumbnail(FIBITMAP *dib, int max_pixel_size, BOOL convert) { + FIBITMAP *thumbnail = NULL; + int new_width, new_height; + + if(!FreeImage_HasPixels(dib) || (max_pixel_size <= 0)) return NULL; + + int width = FreeImage_GetWidth(dib); + int height = FreeImage_GetHeight(dib); + + if(max_pixel_size == 0) max_pixel_size = 1; + + if((width < max_pixel_size) && (height < max_pixel_size)) { + // image is smaller than the requested thumbnail + return FreeImage_Clone(dib); + } + + if(width > height) { + new_width = max_pixel_size; + // change image height with the same ratio + double ratio = ((double)new_width / (double)width); + new_height = (int)(height * ratio + 0.5); + if(new_height == 0) new_height = 1; + } else { + new_height = max_pixel_size; + // change image width with the same ratio + double ratio = ((double)new_height / (double)height); + new_width = (int)(width * ratio + 0.5); + if(new_width == 0) new_width = 1; + } + + const FREE_IMAGE_TYPE image_type = FreeImage_GetImageType(dib); + + // perform downsampling using a bilinear interpolation + + switch(image_type) { + case FIT_BITMAP: + case FIT_UINT16: + case FIT_RGB16: + case FIT_RGBA16: + case FIT_FLOAT: + case FIT_RGBF: + case FIT_RGBAF: + { + FREE_IMAGE_FILTER filter = FILTER_BILINEAR; + thumbnail = FreeImage_Rescale(dib, new_width, new_height, filter); + } + break; + + case FIT_INT16: + case FIT_UINT32: + case FIT_INT32: + case FIT_DOUBLE: + case FIT_COMPLEX: + default: + // cannot rescale this kind of image + thumbnail = NULL; + break; + } + + if((thumbnail != NULL) && (image_type != FIT_BITMAP) && convert) { + // convert to a standard bitmap + FIBITMAP *bitmap = NULL; + switch(image_type) { + case FIT_UINT16: + bitmap = FreeImage_ConvertTo8Bits(thumbnail); + break; + case FIT_RGB16: + bitmap = FreeImage_ConvertTo24Bits(thumbnail); + break; + case FIT_RGBA16: + bitmap = FreeImage_ConvertTo32Bits(thumbnail); + break; + case FIT_FLOAT: + bitmap = FreeImage_ConvertToStandardType(thumbnail, TRUE); + break; + case FIT_RGBF: + bitmap = FreeImage_ToneMapping(thumbnail, FITMO_DRAGO03); + break; + case FIT_RGBAF: + // no way to keep the transparency yet ... + FIBITMAP *rgbf = FreeImage_ConvertToRGBF(thumbnail); + bitmap = FreeImage_ToneMapping(rgbf, FITMO_DRAGO03); + FreeImage_Unload(rgbf); + break; + } + if(bitmap != NULL) { + FreeImage_Unload(thumbnail); + thumbnail = bitmap; + } + } + + // copy metadata from src to dst + FreeImage_CloneMetadata(thumbnail, dib); + + return thumbnail; +} |