/src/FreeImage/Source/FreeImage/ConversionType.cpp

https://bitbucket.org/cabalistic/ogredeps/ · C++ · 689 lines · 558 code · 60 blank · 71 comment · 49 complexity · 37ae57f05b425f4652e87bbfb4e35b38 MD5 · raw file 

    

  1. // ==========================================================
    2. 

  2. // Bitmap conversion routines
    3. 

  3. //
    4. 

  4. // Design and implementation by
    5. 

  5. // - Hervé Drolon (drolon@infonie.fr)
    6. 

  6. //
    7. 

  7. // This file is part of FreeImage 3
    8. 

  8. //
    9. 

  9. // COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY
    10. 

  10. // OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
    11. 

  11. // THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE
    12. 

  12. // OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED
    13. 

  13. // CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT
    14. 

  14. // THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY
    15. 

  15. // SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL
    16. 

  16. // PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER
    17. 

  17. // THIS DISCLAIMER.
    18. 

  18. //
    19. 

  19. // Use at your own risk!
    20. 

  20. // ==========================================================
    21. 

  21. 

  22. #include "FreeImage.h"
    23. 

  23. #include "Utilities.h"
    24. 

  24. 

  25. // ----------------------------------------------------------
    26. 

  26. 

  27. /** Convert a greyscale image of type Tsrc to type Tdst.
    28. 

  28. 	Conversion is done using standard C language casting convention.
    29. 

  29. */
    30. 

  30. template<class Tdst, class Tsrc>
    31. 

  31. class CONVERT_TYPE
    32. 

  32. {
    33. 

  33. public:
    34. 

  34. 	FIBITMAP* convert(FIBITMAP *src, FREE_IMAGE_TYPE dst_type);
    35. 

  35. };
    36. 

  36. 

  37. template<class Tdst, class Tsrc> FIBITMAP* 
    38. 

  38. CONVERT_TYPE<Tdst, Tsrc>::convert(FIBITMAP *src, FREE_IMAGE_TYPE dst_type) {
    39. 

  39. 

  40. 	FIBITMAP *dst = NULL;
    41. 

  41. 

  42. 	unsigned width	= FreeImage_GetWidth(src);
    43. 

  43. 	unsigned height = FreeImage_GetHeight(src);
    44. 

  44. 	unsigned bpp	= FreeImage_GetBPP(src);
    45. 

  45. 

  46. 	// allocate dst image
    47. 

  47. 

  48. 	dst = FreeImage_AllocateT(dst_type, width, height, bpp, 
    49. 

  49. 			FreeImage_GetRedMask(src), FreeImage_GetGreenMask(src), FreeImage_GetBlueMask(src));
    50. 

  50. 	if(!dst) return NULL;
    51. 

  51. 

  52. 	// convert from src_type to dst_type
    53. 

  53. 	
    54. 

  54. 	for(unsigned y = 0; y < height; y++) {
    55. 

  55. 		const Tsrc *src_bits = reinterpret_cast<Tsrc*>(FreeImage_GetScanLine(src, y));
    56. 

  56. 		Tdst *dst_bits = reinterpret_cast<Tdst*>(FreeImage_GetScanLine(dst, y));
    57. 

  57. 

  58. 		for(unsigned x = 0; x < width; x++) {
    59. 

  59. 			*dst_bits++ = static_cast<Tdst>(*src_bits++);
    60. 

  60. 		}
    61. 

  61. 	}
    62. 

  62. 

  63. 	return dst;
    64. 

  64. }
    65. 

  65. 

  66. 

  67. /** Convert a greyscale image of type Tsrc to a 8-bit grayscale dib.
    68. 

  68. 	Conversion is done using either a linear scaling from [min, max] to [0, 255]
    69. 

  69. 	or a rounding from src_pixel to (BYTE) MIN(255, MAX(0, q)) where int q = int(src_pixel + 0.5); 
    70. 

  70. */
    71. 

  71. template<class Tsrc>
    72. 

  72. class CONVERT_TO_BYTE
    73. 

  73. {
    74. 

  74. public:
    75. 

  75. 	FIBITMAP* convert(FIBITMAP *src, BOOL scale_linear);
    76. 

  76. };
    77. 

  77. 

  78. template<class Tsrc> FIBITMAP* 
    79. 

  79. CONVERT_TO_BYTE<Tsrc>::convert(FIBITMAP *src, BOOL scale_linear) {
    80. 

  80. 	FIBITMAP *dst = NULL;
    81. 

  81. 	unsigned x, y;
    82. 

  82. 

  83. 	unsigned width	= FreeImage_GetWidth(src);
    84. 

  84. 	unsigned height = FreeImage_GetHeight(src);
    85. 

  85. 

  86. 	// allocate a 8-bit dib
    87. 

  87. 

  88. 	dst = FreeImage_AllocateT(FIT_BITMAP, width, height, 8, 0, 0, 0);
    89. 

  89. 	if(!dst) return NULL;
    90. 

  90. 

  91. 	// build a greyscale palette
    92. 

  92. 	RGBQUAD *pal = FreeImage_GetPalette(dst);
    93. 

  93. 	for(int i = 0; i < 256; i++) {
    94. 

  94. 		pal[i].rgbRed = (BYTE)i;
    95. 

  95. 		pal[i].rgbGreen = (BYTE)i;
    96. 

  96. 		pal[i].rgbBlue = (BYTE)i;
    97. 

  97. 	}
    98. 

  98. 

  99. 	// convert the src image to dst
    100. 

  100. 	// (FIBITMAP are stored upside down)
    101. 

  101. 	if(scale_linear) {
    102. 

  102. 		Tsrc max, min;
    103. 

  103. 		double scale;
    104. 

  104. 

  105. 		// find the min and max value of the image
    106. 

  106. 		Tsrc l_min, l_max;
    107. 

  107. 		min = 255, max = 0;
    108. 

  108. 		for(y = 0; y < height; y++) {
    109. 

  109. 			Tsrc *bits = reinterpret_cast<Tsrc*>(FreeImage_GetScanLine(src, y));
    110. 

  110. 			MAXMIN(bits, width, l_max, l_min);
    111. 

  111. 			if(l_max > max) max = l_max;
    112. 

  112. 			if(l_min < min) min = l_min;
    113. 

  113. 		}
    114. 

  114. 		if(max == min) {
    115. 

  115. 			max = 255; min = 0;
    116. 

  116. 		}
    117. 

  117. 

  118. 		// compute the scaling factor
    119. 

  119. 		scale = 255 / (double)(max - min);
    120. 

  120. 

  121. 		// scale to 8-bit
    122. 

  122. 		for(y = 0; y < height; y++) {
    123. 

  123. 			Tsrc *src_bits = reinterpret_cast<Tsrc*>(FreeImage_GetScanLine(src, y));
    124. 

  124. 			BYTE *dst_bits = FreeImage_GetScanLine(dst, y);
    125. 

  125. 			for(x = 0; x < width; x++) {
    126. 

  126. 				dst_bits[x] = (BYTE)( scale * (src_bits[x] - min) + 0.5);
    127. 

  127. 			}
    128. 

  128. 		}
    129. 

  129. 	} else {
    130. 

  130. 		for(y = 0; y < height; y++) {
    131. 

  131. 			Tsrc *src_bits = reinterpret_cast<Tsrc*>(FreeImage_GetScanLine(src, y));
    132. 

  132. 			BYTE *dst_bits = FreeImage_GetScanLine(dst, y);
    133. 

  133. 			for(x = 0; x < width; x++) {
    134. 

  134. 				// rounding
    135. 

  135. 				int q = int(src_bits[x] + 0.5);
    136. 

  136. 				dst_bits[x] = (BYTE) MIN(255, MAX(0, q));
    137. 

  137. 			}
    138. 

  138. 		}
    139. 

  139. 	}
    140. 

  140. 

  141. 	return dst;
    142. 

  142. }
    143. 

  143. 

  144. /** Convert a greyscale image of type Tsrc to a FICOMPLEX dib.
    145. 

  145. */
    146. 

  146. template<class Tsrc>
    147. 

  147. class CONVERT_TO_COMPLEX
    148. 

  148. {
    149. 

  149. public:
    150. 

  150. 	FIBITMAP* convert(FIBITMAP *src);
    151. 

  151. };
    152. 

  152. 

  153. template<class Tsrc> FIBITMAP* 
    154. 

  154. CONVERT_TO_COMPLEX<Tsrc>::convert(FIBITMAP *src) {
    155. 

  155. 	FIBITMAP *dst = NULL;
    156. 

  156. 

  157. 	unsigned width	= FreeImage_GetWidth(src);
    158. 

  158. 	unsigned height = FreeImage_GetHeight(src);
    159. 

  159. 

  160. 	// allocate dst image
    161. 

  161. 

  162. 	dst = FreeImage_AllocateT(FIT_COMPLEX, width, height);
    163. 

  163. 	if(!dst) return NULL;
    164. 

  164. 

  165. 	// convert from src_type to FIT_COMPLEX
    166. 

  166. 	
    167. 

  167. 	for(unsigned y = 0; y < height; y++) {
    168. 

  168. 		const Tsrc *src_bits = reinterpret_cast<Tsrc*>(FreeImage_GetScanLine(src, y));
    169. 

  169. 		FICOMPLEX *dst_bits = (FICOMPLEX *)FreeImage_GetScanLine(dst, y);
    170. 

  170. 

  171. 		for(unsigned x = 0; x < width; x++) {
    172. 

  172. 			dst_bits[x].r = (double)src_bits[x];
    173. 

  173. 			dst_bits[x].i = 0;
    174. 

  174. 		}
    175. 

  175. 	}
    176. 

  176. 

  177. 	return dst;
    178. 

  178. }
    179. 

  179. 

  180. // ----------------------------------------------------------
    181. 

  181. 

  182. // Convert from type BYTE to type X
    183. 

  183. CONVERT_TYPE<unsigned short, BYTE>	convertByteToUShort;
    184. 

  184. CONVERT_TYPE<short, BYTE>			convertByteToShort;
    185. 

  185. CONVERT_TYPE<DWORD, BYTE>			convertByteToULong;
    186. 

  186. CONVERT_TYPE<LONG, BYTE>			convertByteToLong;
    187. 

  187. CONVERT_TYPE<float, BYTE>			convertByteToFloat;
    188. 

  188. CONVERT_TYPE<double, BYTE>			convertByteToDouble;
    189. 

  189. 

  190. // Convert from type X to type BYTE
    191. 

  191. CONVERT_TO_BYTE<unsigned short>	convertUShortToByte;
    192. 

  192. CONVERT_TO_BYTE<short>			convertShortToByte;
    193. 

  193. CONVERT_TO_BYTE<DWORD>			convertULongToByte;
    194. 

  194. CONVERT_TO_BYTE<LONG>			convertLongToByte;
    195. 

  195. CONVERT_TO_BYTE<float>			convertFloatToByte;
    196. 

  196. CONVERT_TO_BYTE<double>			convertDoubleToByte;
    197. 

  197. 

  198. // Convert from type X to type float
    199. 

  199. CONVERT_TYPE<float, unsigned short>	convertUShortToFloat;
    200. 

  200. CONVERT_TYPE<float, short>			convertShortToFloat;
    201. 

  201. CONVERT_TYPE<float, DWORD>			convertULongToFloat;
    202. 

  202. CONVERT_TYPE<float, LONG>			convertLongToFloat;
    203. 

  203. 

  204. // Convert from type X to type double
    205. 

  205. CONVERT_TYPE<double, unsigned short>	convertUShortToDouble;
    206. 

  206. CONVERT_TYPE<double, short>				convertShortToDouble;
    207. 

  207. CONVERT_TYPE<double, DWORD>				convertULongToDouble;
    208. 

  208. CONVERT_TYPE<double, LONG>				convertLongToDouble;
    209. 

  209. CONVERT_TYPE<double, float>				convertFloatToDouble;
    210. 

  210. 

  211. // Convert from type X to type FICOMPLEX
    212. 

  212. CONVERT_TO_COMPLEX<BYTE>			convertByteToComplex;
    213. 

  213. CONVERT_TO_COMPLEX<unsigned short>	convertUShortToComplex;
    214. 

  214. CONVERT_TO_COMPLEX<short>			convertShortToComplex;
    215. 

  215. CONVERT_TO_COMPLEX<DWORD>			convertULongToComplex;
    216. 

  216. CONVERT_TO_COMPLEX<LONG>			convertLongToComplex;
    217. 

  217. CONVERT_TO_COMPLEX<float>			convertFloatToComplex;
    218. 

  218. CONVERT_TO_COMPLEX<double>			convertDoubleToComplex;
    219. 

  219. 

  220. // ----------------------------------------------------------
    221. 

  221. 

  222. // ----------------------------------------------------------
    223. 

  223. //   smart convert X to standard FIBITMAP
    224. 

  224. // ----------------------------------------------------------
    225. 

  225. 

  226. /** Convert image of any type to a standard 8-bit greyscale image.
    227. 

  227. For standard images, a clone of the input image is returned.
    228. 

  228. When the scale_linear parameter is TRUE, conversion is done by scaling linearly 
    229. 

  229. each pixel to an integer value between [0..255]. When it is FALSE, conversion is done 
    230. 

  230. by rounding each float pixel to an integer between [0..255]. 
    231. 

  231. For complex images, the magnitude is extracted as a double image, then converted according to the scale parameter. 
    232. 

  232. @param image Image to convert
    233. 

  233. @param scale_linear Linear scaling / rounding switch
    234. 

  234. */
    235. 

  235. FIBITMAP* DLL_CALLCONV
    236. 

  236. FreeImage_ConvertToStandardType(FIBITMAP *src, BOOL scale_linear) {
    237. 

  237. 	FIBITMAP *dst = NULL;
    238. 

  238. 

  239. 	if(!src) return NULL;
    240. 

  240. 

  241. 	// convert from src_type to FIT_BITMAP
    242. 

  242. 

  243. 	const FREE_IMAGE_TYPE src_type = FreeImage_GetImageType(src);
    244. 

  244. 

  245. 	switch(src_type) {
    246. 

  246. 		case FIT_BITMAP:	// standard image: 1-, 4-, 8-, 16-, 24-, 32-bit
    247. 

  247. 			dst = FreeImage_Clone(src);
    248. 

  248. 			break;
    249. 

  249. 		case FIT_UINT16:	// array of unsigned short: unsigned 16-bit
    250. 

  250. 			dst = convertUShortToByte.convert(src, scale_linear);
    251. 

  251. 			break;
    252. 

  252. 		case FIT_INT16:		// array of short: signed 16-bit
    253. 

  253. 			dst = convertShortToByte.convert(src, scale_linear);
    254. 

  254. 			break;
    255. 

  255. 		case FIT_UINT32:	// array of unsigned long: unsigned 32-bit
    256. 

  256. 			dst = convertULongToByte.convert(src, scale_linear);
    257. 

  257. 			break;
    258. 

  258. 		case FIT_INT32:		// array of long: signed 32-bit
    259. 

  259. 			dst = convertLongToByte.convert(src, scale_linear);
    260. 

  260. 			break;
    261. 

  261. 		case FIT_FLOAT:		// array of float: 32-bit
    262. 

  262. 			dst = convertFloatToByte.convert(src, scale_linear);
    263. 

  263. 			break;
    264. 

  264. 		case FIT_DOUBLE:	// array of double: 64-bit
    265. 

  265. 			dst = convertDoubleToByte.convert(src, scale_linear);
    266. 

  266. 			break;
    267. 

  267. 		case FIT_COMPLEX:	// array of FICOMPLEX: 2 x 64-bit
    268. 

  268. 			{
    269. 

  269. 				// Convert to type FIT_DOUBLE
    270. 

  270. 				FIBITMAP *dib_double = FreeImage_GetComplexChannel(src, FICC_MAG);
    271. 

  271. 				if(dib_double) {
    272. 

  272. 					// Convert to a standard bitmap (linear scaling)
    273. 

  273. 					dst = convertDoubleToByte.convert(dib_double, scale_linear);
    274. 

  274. 					// Free image of type FIT_DOUBLE
    275. 

  275. 					FreeImage_Unload(dib_double);
    276. 

  276. 				}
    277. 

  277. 			}
    278. 

  278. 			break;
    279. 

  279. 		case FIT_RGB16:		// 48-bit RGB image: 3 x 16-bit
    280. 

  280. 			break;
    281. 

  281. 		case FIT_RGBA16:	// 64-bit RGBA image: 4 x 16-bit
    282. 

  282. 			break;
    283. 

  283. 		case FIT_RGBF:		// 96-bit RGB float image: 3 x 32-bit IEEE floating point
    284. 

  284. 			break;
    285. 

  285. 		case FIT_RGBAF:		// 128-bit RGBA float image: 4 x 32-bit IEEE floating point
    286. 

  286. 			break;
    287. 

  287. 	}
    288. 

  288. 

  289. 	if(NULL == dst) {
    290. 

  290. 		FreeImage_OutputMessageProc(FIF_UNKNOWN, "FREE_IMAGE_TYPE: Unable to convert from type %d to type %d.\n No such conversion exists.", src_type, FIT_BITMAP);
    291. 

  291. 	} else {
    292. 

  292. 		// copy metadata from src to dst
    293. 

  293. 		FreeImage_CloneMetadata(dst, src);
    294. 

  294. 	}
    295. 

  295. 	
    296. 

  296. 	return dst;
    297. 

  297. }
    298. 

  298. 

  299. 

  300. 

  301. // ----------------------------------------------------------
    302. 

  302. //   smart convert X to Y
    303. 

  303. // ----------------------------------------------------------
    304. 

  304. 

  305. FIBITMAP* DLL_CALLCONV
    306. 

  306. FreeImage_ConvertToType(FIBITMAP *src, FREE_IMAGE_TYPE dst_type, BOOL scale_linear) {
    307. 

  307. 	FIBITMAP *dst = NULL;
    308. 

  308. 

  309. 	if(!FreeImage_HasPixels(src)) return NULL;
    310. 

  310. 

  311. 	// convert from src_type to dst_type
    312. 

  312. 

  313. 	const FREE_IMAGE_TYPE src_type = FreeImage_GetImageType(src);
    314. 

  314. 

  315. 	if(src_type == dst_type) {
    316. 

  316. 		return FreeImage_Clone(src);
    317. 

  317. 	}
    318. 

  318. 

  319. 	const unsigned src_bpp = FreeImage_GetBPP(src);
    320. 

  320. 

  321. 	switch(src_type) {
    322. 

  322. 		case FIT_BITMAP:
    323. 

  323. 			switch(dst_type) {
    324. 

  324. 				case FIT_UINT16:
    325. 

  325. 					dst = FreeImage_ConvertToUINT16(src);
    326. 

  326. 					break;
    327. 

  327. 				case FIT_INT16:
    328. 

  328. 					dst = (src_bpp == 8) ? convertByteToShort.convert(src, dst_type) : NULL;
    329. 

  329. 					break;
    330. 

  330. 				case FIT_UINT32:
    331. 

  331. 					dst = (src_bpp == 8) ? convertByteToULong.convert(src, dst_type) : NULL;
    332. 

  332. 					break;
    333. 

  333. 				case FIT_INT32:
    334. 

  334. 					dst = (src_bpp == 8) ? convertByteToLong.convert(src, dst_type) : NULL;
    335. 

  335. 					break;
    336. 

  336. 				case FIT_FLOAT:
    337. 

  337. 					dst = FreeImage_ConvertToFloat(src);
    338. 

  338. 					break;
    339. 

  339. 				case FIT_DOUBLE:
    340. 

  340. 					dst = (src_bpp == 8) ? convertByteToDouble.convert(src, dst_type) : NULL;
    341. 

  341. 					break;
    342. 

  342. 				case FIT_COMPLEX:
    343. 

  343. 					dst = (src_bpp == 8) ? convertByteToComplex.convert(src) : NULL;
    344. 

  344. 					break;
    345. 

  345. 				case FIT_RGB16:
    346. 

  346. 					dst = FreeImage_ConvertToRGB16(src);
    347. 

  347. 					break;
    348. 

  348. 				case FIT_RGBA16:
    349. 

  349. 					break;
    350. 

  350. 				case FIT_RGBF:
    351. 

  351. 					dst = FreeImage_ConvertToRGBF(src);
    352. 

  352. 					break;
    353. 

  353. 				case FIT_RGBAF:
    354. 

  354. 					break;
    355. 

  355. 			}
    356. 

  356. 			break;
    357. 

  357. 		case FIT_UINT16:
    358. 

  358. 			switch(dst_type) {
    359. 

  359. 				case FIT_BITMAP:
    360. 

  360. 					dst = FreeImage_ConvertToStandardType(src, scale_linear);
    361. 

  361. 					break;
    362. 

  362. 				case FIT_INT16:
    363. 

  363. 					break;
    364. 

  364. 				case FIT_UINT32:
    365. 

  365. 					break;
    366. 

  366. 				case FIT_INT32:
    367. 

  367. 					break;
    368. 

  368. 				case FIT_FLOAT:
    369. 

  369. 					dst = FreeImage_ConvertToFloat(src);
    370. 

  370. 					break;
    371. 

  371. 				case FIT_DOUBLE:
    372. 

  372. 					dst = convertUShortToDouble.convert(src, dst_type);
    373. 

  373. 					break;
    374. 

  374. 				case FIT_COMPLEX:
    375. 

  375. 					dst = convertUShortToComplex.convert(src);
    376. 

  376. 					break;
    377. 

  377. 				case FIT_RGB16:
    378. 

  378. 					dst = FreeImage_ConvertToRGB16(src);
    379. 

  379. 					break;
    380. 

  380. 				case FIT_RGBA16:
    381. 

  381. 					break;
    382. 

  382. 				case FIT_RGBF:
    383. 

  383. 					dst = FreeImage_ConvertToRGBF(src);
    384. 

  384. 					break;
    385. 

  385. 				case FIT_RGBAF:
    386. 

  386. 					break;
    387. 

  387. 			}
    388. 

  388. 			break;
    389. 

  389. 		case FIT_INT16:
    390. 

  390. 			switch(dst_type) {
    391. 

  391. 				case FIT_BITMAP:
    392. 

  392. 					dst = FreeImage_ConvertToStandardType(src, scale_linear);
    393. 

  393. 					break;
    394. 

  394. 				case FIT_UINT16:
    395. 

  395. 					break;
    396. 

  396. 				case FIT_UINT32:
    397. 

  397. 					break;
    398. 

  398. 				case FIT_INT32:
    399. 

  399. 					break;
    400. 

  400. 				case FIT_FLOAT:
    401. 

  401. 					dst = convertShortToFloat.convert(src, dst_type);
    402. 

  402. 					break;
    403. 

  403. 				case FIT_DOUBLE:
    404. 

  404. 					dst = convertShortToDouble.convert(src, dst_type);
    405. 

  405. 					break;
    406. 

  406. 				case FIT_COMPLEX:
    407. 

  407. 					dst = convertShortToComplex.convert(src);
    408. 

  408. 					break;
    409. 

  409. 				case FIT_RGB16:
    410. 

  410. 					break;
    411. 

  411. 				case FIT_RGBA16:
    412. 

  412. 					break;
    413. 

  413. 				case FIT_RGBF:
    414. 

  414. 					break;
    415. 

  415. 				case FIT_RGBAF:
    416. 

  416. 					break;
    417. 

  417. 			}
    418. 

  418. 			break;
    419. 

  419. 		case FIT_UINT32:
    420. 

  420. 			switch(dst_type) {
    421. 

  421. 				case FIT_BITMAP:
    422. 

  422. 					dst = FreeImage_ConvertToStandardType(src, scale_linear);
    423. 

  423. 					break;
    424. 

  424. 				case FIT_UINT16:
    425. 

  425. 					break;
    426. 

  426. 				case FIT_INT16:
    427. 

  427. 					break;
    428. 

  428. 				case FIT_INT32:
    429. 

  429. 					break;
    430. 

  430. 				case FIT_FLOAT:
    431. 

  431. 					dst = convertULongToFloat.convert(src, dst_type);
    432. 

  432. 					break;
    433. 

  433. 				case FIT_DOUBLE:
    434. 

  434. 					dst = convertULongToDouble.convert(src, dst_type);
    435. 

  435. 					break;
    436. 

  436. 				case FIT_COMPLEX:
    437. 

  437. 					dst = convertULongToComplex.convert(src);
    438. 

  438. 					break;
    439. 

  439. 				case FIT_RGB16:
    440. 

  440. 					break;
    441. 

  441. 				case FIT_RGBA16:
    442. 

  442. 					break;
    443. 

  443. 				case FIT_RGBF:
    444. 

  444. 					break;
    445. 

  445. 				case FIT_RGBAF:
    446. 

  446. 					break;
    447. 

  447. 			}
    448. 

  448. 			break;
    449. 

  449. 		case FIT_INT32:
    450. 

  450. 			switch(dst_type) {
    451. 

  451. 				case FIT_BITMAP:
    452. 

  452. 					dst = FreeImage_ConvertToStandardType(src, scale_linear);
    453. 

  453. 					break;
    454. 

  454. 				case FIT_UINT16:
    455. 

  455. 					break;
    456. 

  456. 				case FIT_INT16:
    457. 

  457. 					break;
    458. 

  458. 				case FIT_UINT32:
    459. 

  459. 					break;
    460. 

  460. 				case FIT_FLOAT:
    461. 

  461. 					dst = convertLongToFloat.convert(src, dst_type);
    462. 

  462. 					break;
    463. 

  463. 				case FIT_DOUBLE:
    464. 

  464. 					dst = convertLongToDouble.convert(src, dst_type);
    465. 

  465. 					break;
    466. 

  466. 				case FIT_COMPLEX:
    467. 

  467. 					dst = convertLongToComplex.convert(src);
    468. 

  468. 					break;
    469. 

  469. 				case FIT_RGB16:
    470. 

  470. 					break;
    471. 

  471. 				case FIT_RGBA16:
    472. 

  472. 					break;
    473. 

  473. 				case FIT_RGBF:
    474. 

  474. 					break;
    475. 

  475. 				case FIT_RGBAF:
    476. 

  476. 					break;
    477. 

  477. 			}
    478. 

  478. 			break;
    479. 

  479. 		case FIT_FLOAT:
    480. 

  480. 			switch(dst_type) {
    481. 

  481. 				case FIT_BITMAP:
    482. 

  482. 					dst = FreeImage_ConvertToStandardType(src, scale_linear);
    483. 

  483. 					break;
    484. 

  484. 				case FIT_UINT16:
    485. 

  485. 					break;
    486. 

  486. 				case FIT_INT16:
    487. 

  487. 					break;
    488. 

  488. 				case FIT_UINT32:
    489. 

  489. 					break;
    490. 

  490. 				case FIT_INT32:
    491. 

  491. 					break;
    492. 

  492. 				case FIT_DOUBLE:
    493. 

  493. 					dst = convertFloatToDouble.convert(src, dst_type);
    494. 

  494. 					break;
    495. 

  495. 				case FIT_COMPLEX:
    496. 

  496. 					dst = convertFloatToComplex.convert(src);
    497. 

  497. 					break;
    498. 

  498. 				case FIT_RGB16:
    499. 

  499. 					break;
    500. 

  500. 				case FIT_RGBA16:
    501. 

  501. 					break;
    502. 

  502. 				case FIT_RGBF:
    503. 

  503. 					dst = FreeImage_ConvertToRGBF(src);
    504. 

  504. 					break;
    505. 

  505. 				case FIT_RGBAF:
    506. 

  506. 					break;
    507. 

  507. 			}
    508. 

  508. 			break;
    509. 

  509. 		case FIT_DOUBLE:
    510. 

  510. 			switch(dst_type) {
    511. 

  511. 				case FIT_BITMAP:
    512. 

  512. 					dst = FreeImage_ConvertToStandardType(src, scale_linear);
    513. 

  513. 					break;
    514. 

  514. 				case FIT_UINT16:
    515. 

  515. 					break;
    516. 

  516. 				case FIT_INT16:
    517. 

  517. 					break;
    518. 

  518. 				case FIT_UINT32:
    519. 

  519. 					break;
    520. 

  520. 				case FIT_INT32:
    521. 

  521. 					break;
    522. 

  522. 				case FIT_FLOAT:
    523. 

  523. 					break;
    524. 

  524. 				case FIT_COMPLEX:
    525. 

  525. 					dst = convertDoubleToComplex.convert(src);
    526. 

  526. 					break;
    527. 

  527. 				case FIT_RGB16:
    528. 

  528. 					break;
    529. 

  529. 				case FIT_RGBA16:
    530. 

  530. 					break;
    531. 

  531. 				case FIT_RGBF:
    532. 

  532. 					break;
    533. 

  533. 				case FIT_RGBAF:
    534. 

  534. 					break;
    535. 

  535. 			}
    536. 

  536. 			break;
    537. 

  537. 		case FIT_COMPLEX:
    538. 

  538. 			switch(dst_type) {
    539. 

  539. 				case FIT_BITMAP:
    540. 

  540. 					break;
    541. 

  541. 				case FIT_UINT16:
    542. 

  542. 					break;
    543. 

  543. 				case FIT_INT16:
    544. 

  544. 					break;
    545. 

  545. 				case FIT_UINT32:
    546. 

  546. 					break;
    547. 

  547. 				case FIT_INT32:
    548. 

  548. 					break;
    549. 

  549. 				case FIT_FLOAT:
    550. 

  550. 					break;
    551. 

  551. 				case FIT_DOUBLE:
    552. 

  552. 					break;
    553. 

  553. 				case FIT_RGB16:
    554. 

  554. 					break;
    555. 

  555. 				case FIT_RGBA16:
    556. 

  556. 					break;
    557. 

  557. 				case FIT_RGBF:
    558. 

  558. 					break;
    559. 

  559. 				case FIT_RGBAF:
    560. 

  560. 					break;
    561. 

  561. 			}
    562. 

  562. 			break;
    563. 

  563. 		case FIT_RGB16:
    564. 

  564. 			switch(dst_type) {
    565. 

  565. 				case FIT_BITMAP:
    566. 

  566. 					dst = FreeImage_ConvertTo24Bits(src);
    567. 

  567. 					break;
    568. 

  568. 				case FIT_UINT16:
    569. 

  569. 					dst = FreeImage_ConvertToUINT16(src);
    570. 

  570. 					break;
    571. 

  571. 				case FIT_INT16:
    572. 

  572. 					break;
    573. 

  573. 				case FIT_UINT32:
    574. 

  574. 					break;
    575. 

  575. 				case FIT_INT32:
    576. 

  576. 					break;
    577. 

  577. 				case FIT_FLOAT:
    578. 

  578. 					dst = FreeImage_ConvertToFloat(src);
    579. 

  579. 					break;
    580. 

  580. 				case FIT_DOUBLE:
    581. 

  581. 					break;
    582. 

  582. 				case FIT_COMPLEX:
    583. 

  583. 					break;
    584. 

  584. 				case FIT_RGBA16:
    585. 

  585. 					break;
    586. 

  586. 				case FIT_RGBF:
    587. 

  587. 					dst = FreeImage_ConvertToRGBF(src);
    588. 

  588. 					break;
    589. 

  589. 				case FIT_RGBAF:
    590. 

  590. 					break;
    591. 

  591. 			}
    592. 

  592. 			break;
    593. 

  593. 		case FIT_RGBA16:
    594. 

  594. 			switch(dst_type) {
    595. 

  595. 				case FIT_BITMAP:
    596. 

  596. 					dst = FreeImage_ConvertTo32Bits(src);
    597. 

  597. 					break;
    598. 

  598. 				case FIT_UINT16:
    599. 

  599. 					dst = FreeImage_ConvertToUINT16(src);
    600. 

  600. 					break;
    601. 

  601. 				case FIT_INT16:
    602. 

  602. 					break;
    603. 

  603. 				case FIT_UINT32:
    604. 

  604. 					break;
    605. 

  605. 				case FIT_INT32:
    606. 

  606. 					break;
    607. 

  607. 				case FIT_FLOAT:
    608. 

  608. 					dst = FreeImage_ConvertToFloat(src);
    609. 

  609. 					break;
    610. 

  610. 				case FIT_DOUBLE:
    611. 

  611. 					break;
    612. 

  612. 				case FIT_COMPLEX:
    613. 

  613. 					break;
    614. 

  614. 				case FIT_RGB16:
    615. 

  615. 					dst = FreeImage_ConvertToRGB16(src);
    616. 

  616. 					break;
    617. 

  617. 				case FIT_RGBF:
    618. 

  618. 					dst = FreeImage_ConvertToRGBF(src);
    619. 

  619. 					break;
    620. 

  620. 				case FIT_RGBAF:
    621. 

  621. 					break;
    622. 

  622. 			}
    623. 

  623. 			break;
    624. 

  624. 		case FIT_RGBF:
    625. 

  625. 			switch(dst_type) {
    626. 

  626. 				case FIT_BITMAP:
    627. 

  627. 					break;
    628. 

  628. 				case FIT_UINT16:
    629. 

  629. 					break;
    630. 

  630. 				case FIT_INT16:
    631. 

  631. 					break;
    632. 

  632. 				case FIT_UINT32:
    633. 

  633. 					break;
    634. 

  634. 				case FIT_INT32:
    635. 

  635. 					break;
    636. 

  636. 				case FIT_FLOAT:
    637. 

  637. 					dst = FreeImage_ConvertToFloat(src);
    638. 

  638. 					break;
    639. 

  639. 				case FIT_DOUBLE:
    640. 

  640. 					break;
    641. 

  641. 				case FIT_COMPLEX:
    642. 

  642. 					break;
    643. 

  643. 				case FIT_RGB16:
    644. 

  644. 					break;
    645. 

  645. 				case FIT_RGBA16:
    646. 

  646. 					break;
    647. 

  647. 				case FIT_RGBAF:
    648. 

  648. 					break;
    649. 

  649. 			}
    650. 

  650. 			break;
    651. 

  651. 		case FIT_RGBAF:
    652. 

  652. 			switch(dst_type) {
    653. 

  653. 				case FIT_BITMAP:
    654. 

  654. 					break;
    655. 

  655. 				case FIT_UINT16:
    656. 

  656. 					break;
    657. 

  657. 				case FIT_INT16:
    658. 

  658. 					break;
    659. 

  659. 				case FIT_UINT32:
    660. 

  660. 					break;
    661. 

  661. 				case FIT_INT32:
    662. 

  662. 					break;
    663. 

  663. 				case FIT_FLOAT:
    664. 

  664. 					dst = FreeImage_ConvertToFloat(src);
    665. 

  665. 					break;
    666. 

  666. 				case FIT_DOUBLE:
    667. 

  667. 					break;
    668. 

  668. 				case FIT_COMPLEX:
    669. 

  669. 					break;
    670. 

  670. 				case FIT_RGB16:
    671. 

  671. 					break;
    672. 

  672. 				case FIT_RGBA16:
    673. 

  673. 					break;
    674. 

  674. 				case FIT_RGBF:
    675. 

  675. 					dst = FreeImage_ConvertToRGBF(src);
    676. 

  676. 					break;
    677. 

  677. 			}
    678. 

  678. 			break;
    679. 

  679. 	}
    680. 

  680. 

  681. 	if(NULL == dst) {
    682. 

  682. 		FreeImage_OutputMessageProc(FIF_UNKNOWN, "FREE_IMAGE_TYPE: Unable to convert from type %d to type %d.\n No such conversion exists.", src_type, dst_type);
    683. 

  683. 	} else {
    684. 

  684. 		// copy metadata from src to dst
    685. 

  685. 		FreeImage_CloneMetadata(dst, src);
    686. 

  686. 	}
    687. 

  687. 

  688. 	return dst;
    689. 

  689. }
    690.