140 lines
3.8 KiB
C++
140 lines
3.8 KiB
C++
// ==========================================================
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// FreeImage 3 Test Script
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//
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// Design and implementation by
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// - Hervé Drolon (drolon@infonie.fr)
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//
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// This file is part of FreeImage 3
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//
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// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY
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// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
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// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE
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// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED
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// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT
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// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY
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// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL
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// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER
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// THIS DISCLAIMER.
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//
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// Use at your own risk!
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// ==========================================================
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#include "TestSuite.h"
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/**
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Test thumbnail loading
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*/
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static BOOL testLoadThumbnail(const char *lpszPathName, int flags) {
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FIBITMAP *dib = NULL;
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try {
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FREE_IMAGE_FORMAT fif = FreeImage_GetFileType(lpszPathName);
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dib = FreeImage_Load(fif, lpszPathName, flags);
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if(!dib) throw(1);
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FIBITMAP *thumbnail = FreeImage_GetThumbnail(dib);
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if(!thumbnail) throw(1);
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unsigned t_width = FreeImage_GetWidth(thumbnail);
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unsigned t_height = FreeImage_GetHeight(thumbnail);
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printf("... %s contains a thumbnail whose size is %dx%d\n", lpszPathName, t_width, t_height);
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FreeImage_Unload(dib);
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return TRUE;
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}
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catch(int) {
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if(dib) FreeImage_Unload(dib);
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}
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return FALSE;
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}
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/**
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Test thumbnail saving
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*/
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static BOOL testSaveThumbnail(const char *lpszPathName, int flags) {
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BOOL bResult = FALSE;
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FIBITMAP *dib = NULL;
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FIBITMAP *t_clone = NULL;
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const char *lpszImagePathName = "exif_new_thumb.jpg";
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try {
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FREE_IMAGE_FORMAT fif = FreeImage_GetFileType(lpszPathName);
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// load the dib
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dib = FreeImage_Load(fif, lpszPathName, flags);
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if(!dib) throw(1);
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// get a link to the attached thumbnail
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FIBITMAP *thumbnail = FreeImage_GetThumbnail(dib);
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if(!thumbnail) throw(1);
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// clone the thumbnail and modify it (e.g. convert to greyscale)
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assert(FreeImage_GetBPP(thumbnail) == 24);
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t_clone = FreeImage_ConvertTo8Bits(thumbnail);
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if(!t_clone) throw(1);
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// replace the thumbnail
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FreeImage_SetThumbnail(dib, t_clone);
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// no longer needed
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FreeImage_Unload(t_clone);
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t_clone = NULL;
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// save as a new image
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// be sure to delete the Exif segment as it can also contain a thumbnail
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// this thumbnail will then be loaded instead of the one we store in the JFXX segment
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fif = FIF_TIFF;
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FreeImage_SetMetadata(FIMD_EXIF_RAW, dib, NULL, NULL);
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bResult = FreeImage_Save(fif, dib, lpszImagePathName, 0);
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assert(bResult);
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// no longer needed
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FreeImage_Unload(dib);
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// reload the image and check its thumbnail
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dib = FreeImage_Load(fif, lpszImagePathName, 0);
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if(!dib) throw(1);
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// get a link to the attached thumbnail
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FIBITMAP *new_thumbnail = FreeImage_GetThumbnail(dib);
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if(!new_thumbnail) throw(1);
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// check that the thumbnail is greyscale
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// note that with JPEG, we cannot compare pixels between new_thumbnail and t_clone
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// because JPEG compression will modify the pixels
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assert(FreeImage_GetBPP(new_thumbnail) == 8);
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FreeImage_Unload(dib);
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return TRUE;
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}
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catch(int) {
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if(dib) FreeImage_Unload(dib);
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if(t_clone) FreeImage_Unload(t_clone);
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}
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return FALSE;
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}
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/**
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Test thumbnail functions
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*/
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void testThumbnail(const char *lpszPathName, int flags) {
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BOOL bResult = FALSE;
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printf("testThumbnail ...\n");
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// Thumbnail loading
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bResult = testLoadThumbnail(lpszPathName, flags);
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assert(bResult);
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// Thumbnail saving
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bResult = testSaveThumbnail(lpszPathName, flags);
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assert(bResult);
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}
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