/XeePhotoshopLayerParser.m

https://code.google.com/p/xee/ · Objective C · 531 lines · 413 code · 85 blank · 33 comment · 44 complexity · 8300391dba872eb816779e1a6b51a5c4 MD5 · raw file 

    

  1. #import "XeePhotoshopLayerParser.h"
    2. 

  2. #import "XeePhotoshopLoader.h"
    3. 

  3. #import "XeeProperties.h"
    4. 

  4. #import "XeeTypes.h"
    5. 

  5. 

  6. #import "XeeBitmapRawImage.h"
    7. 

  7. #import "XeeIndexedRawImage.h"
    8. 

  8. #import "XeeRawImage.h"
    9. 

  9. 

  10. #import "XeeInterleavingHandle.h"
    11. 

  11. 

  12. #import <XADMaster/CSZlibHandle.h>
    13. 

  13. 

  14. /*static int XeeOffsetOfStringInMemory(const char *str,const void *mem,int len)
    15. 

  15. {
    16. 

  16. 	int slen=strlen(str);
    17. 

  17. 	const char *memstr=mem;
    18. 

  18. 	for(int i=0;i<=len-slen;i++)
    19. 

  19. 	{
    20. 

  20. 		if(str[0]==memstr[i])
    21. 

  21. 		{
    22. 

  22. 			for(int j=1;j<slen;j++)
    23. 

  23. 			{
    24. 

  24. 				if(str[j]!=memstr[i+j]) goto end;
    25. 

  25. 			}
    26. 

  26. 			return i;
    27. 

  27. 		}
    28. 

  28. 		end: 0;
    29. 

  29. 	}
    30. 

  30. 	return -1;
    31. 

  31. }*/
    32. 

  32. 

  33. @implementation XeePhotoshopLayerParser
    34. 

  34. 

  35. +(NSArray *)parseLayersFromHandle:(CSHandle *)fh parentImage:(XeePhotoshopImage *)parent alphaFlag:(BOOL *)hasalpha
    36. 

  36. {
    37. 

  37. 	NSMutableArray *layers=[NSMutableArray array];
    38. 

  38. 	int numlayers=[fh readInt16BE];
    39. 

  39. 

  40. 	if(numlayers<0)
    41. 

  41. 	{
    42. 

  42. 		if(hasalpha) *hasalpha=YES;
    43. 

  43. 		numlayers=-numlayers;
    44. 

  44. 	}
    45. 

  45. 

  46. 	for(int i=0;i<numlayers;i++)
    47. 

  47. 	{
    48. 

  48. 		XeePhotoshopLayerParser *layer=[[[self alloc] initWithHandle:fh parentImage:parent] autorelease];
    49. 

  49. 		[layers addObject:layer];
    50. 

  50. 	}
    51. 

  51. 

  52. 	off_t offset=[fh offsetInFile];
    53. 

  53. 	NSEnumerator *enumerator=[layers objectEnumerator];
    54. 

  54. 	XeePhotoshopLayerParser *layer;
    55. 

  55. 	while(layer=[enumerator nextObject])
    56. 

  56. 	{
    57. 

  57. 		[layer setDataOffset:offset];
    58. 

  58. 		offset+=[layer totalSize];
    59. 

  59. 	}
    60. 

  60. 

  61. 	return layers;
    62. 

  62. }
    63. 

  63. 

  64. -(id)initWithHandle:(CSHandle *)fh parentImage:(XeePhotoshopImage *)parentimage
    65. 

  65. {
    66. 

  66. 	if(self=[super init])
    67. 

  67. 	{
    68. 

  68. 		handle=[fh retain];
    69. 

  69. 		parent=parentimage;
    70. 

  70. 		props=[NSMutableArray new];
    71. 

  71. 		channeloffs=[NSMutableDictionary new];
    72. 

  72. 

  73. 		mode=[parent mode];
    74. 

  74. 		depth=[parent bitDepth];
    75. 

  75. 

  76. 		int top=[fh readInt32BE];
    77. 

  77. 		int left=[fh readInt32BE];
    78. 

  78. 		int bottom=[fh readInt32BE];
    79. 

  79. 		int right=[fh readInt32BE];
    80. 

  80. 

  81. 		width=right-left;
    82. 

  82. 		height=bottom-top;
    83. 

  83. 

  84. 		channels=[fh readUInt16BE];
    85. 

  85. 		totalsize=0;
    86. 

  86. 

  87. 		for(int j=0;j<channels;j++)
    88. 

  88. 		{
    89. 

  89. 			int channelid=[fh readInt16BE];
    90. 

  90. 			uint32_t channellength=[fh readUInt32BE];
    91. 

  91. 

  92. 			[channeloffs setObject:[NSNumber numberWithLongLong:totalsize] forKey:[NSNumber numberWithInt:channelid]];
    93. 

  93. 			totalsize+=channellength;
    94. 

  94. 		}
    95. 

  95. 

  96. 		[fh skipBytes:4]; // '8BIM'
    97. 

  97. 		uint32_t blendmode=[fh readUInt32BE];
    98. 

  98. 		int opacity=[fh readUInt8];
    99. 

  99. 		/*int clipping=*/[fh readUInt8];
    100. 

  100. 		/*int flags=*/[fh readUInt8];
    101. 

  101. 		[fh skipBytes:1];
    102. 

  102. 

  103. 		uint32_t extralen=[fh readUInt32BE];
    104. 

  104. 		off_t nextoffs=[fh offsetInFile]+extralen;
    105. 

  105. 

  106. 		int bytesleft=extralen;
    107. 

  107. 

  108. 		NSString *layername=nil;
    109. 

  109. 

  110. 		if(bytesleft<4) goto outofbytes;
    111. 

  111. 		uint32_t masksize=[fh readUInt32BE]; bytesleft-=4;
    112. 

  112. 		if(bytesleft<masksize) goto outofbytes;
    113. 

  113. 		[fh skipBytes:masksize]; bytesleft-=masksize;
    114. 

  114. 

  115. 		if(bytesleft<4) goto outofbytes;
    116. 

  116. 		uint32_t blendsize=[fh readUInt32BE]; bytesleft-=4;
    117. 

  117. 		if(bytesleft<blendsize) goto outofbytes;
    118. 

  118. 		[fh skipBytes:blendsize]; bytesleft-=blendsize;
    119. 

  119. 

  120. 		if(bytesleft<1) goto outofbytes;
    121. 

  121. 		int namelen=[fh readUInt8]; bytesleft-=1;
    122. 

  122. 		if(bytesleft<namelen) goto outofbytes;
    123. 

  123. 		if(namelen) layername=[[[NSString alloc] initWithData:[fh readDataOfLength:namelen] encoding:NSISOLatin1StringEncoding] autorelease];
    124. 

  124. 		int padbytes=((3-namelen)&3);
    125. 

  125. 		if(bytesleft<padbytes) goto outofbytes;
    126. 

  126. 		[fh skipBytes:padbytes]; bytesleft-=padbytes;
    127. 

  127. 

  128. 		NSString *adjustmentname=nil;
    129. 

  129. 		NSArray *typetoolfonts=nil,*typetooltext=nil;
    130. 

  130. 

  131. 		while(bytesleft>=12)
    132. 

  132. 		{
    133. 

  133. 			uint32_t signature=[fh readUInt32BE];
    134. 

  134. 			if(signature!='8BIM') break;
    135. 

  135. 			uint32_t key=[fh readUInt32BE];
    136. 

  136. 			uint32_t chunklen=[fh readUInt32BE];
    137. 

  137. 			off_t nextchunk=[fh offsetInFile]+chunklen;
    138. 

  138. 			bytesleft-=12;
    139. 

  139. 			if(chunklen>bytesleft) break;
    140. 

  140. 

  141. 			switch(key)
    142. 

  142. 			{
    143. 

  143. 				case 'levl': // levels adjustment layer
    144. 

  144. 					adjustmentname=NSLocalizedString(@"Levels",@"Photoshop levels adjustment layer name property value");
    145. 

  145. 				break;
    146. 

  146. 				case 'curv': // curves adjustment layer
    147. 

  147. 					adjustmentname=NSLocalizedString(@"Curves",@"Photoshop curves adjustment layer name property value");
    148. 

  148. 				break;
    149. 

  149. 				case 'brit': // brightness adjustment layer
    150. 

  150. 					adjustmentname=NSLocalizedString(@"Brightness",@"Photoshop brightness adjustment layer name property value");
    151. 

  151. 				break;
    152. 

  152. 				case 'blnc': // color balance adjustment layer
    153. 

  153. 					adjustmentname=NSLocalizedString(@"Color balance",@"Photoshop color balance adjustment layer name property value");
    154. 

  154. 				break;
    155. 

  155. 				case 'hue ': // old hue/saturation adjustment layer
    156. 

  156. 					adjustmentname=NSLocalizedString(@"Hue/saturation (old)",@"Photoshop old hue/saturations adjustment layer name property value");
    157. 

  157. 				break;
    158. 

  158. 				case 'hue2': // new hue/saturation adjustment layer
    159. 

  159. 					adjustmentname=NSLocalizedString(@"Hue/saturation",@"Photoshop hue/saturation adjustment layer name property value");
    160. 

  160. 				break;
    161. 

  161. 				case 'selc': // selective color adjustment layer
    162. 

  162. 					adjustmentname=NSLocalizedString(@"Selective color",@"Photoshop selective color adjustment layer name property value");
    163. 

  163. 				break;
    164. 

  164. 				case 'thrs': // threshold adjustment layer
    165. 

  165. 					adjustmentname=NSLocalizedString(@"Threshold",@"Photoshop threshold adjustment layer name property value");
    166. 

  166. 				break;
    167. 

  167. 				case 'nvrt': // invert adjustment layer
    168. 

  168. 					adjustmentname=NSLocalizedString(@"Invert",@"Photoshop invert adjustment layer name property value");
    169. 

  169. 				break;
    170. 

  170. 				case 'post': // posterize adjustment layer
    171. 

  171. 					adjustmentname=NSLocalizedString(@"Posterize",@"Photoshop posterize adjustment layer name property value");
    172. 

  172. 				break;
    173. 

  173. 

  174. 				case 'lrFX': // effects layer
    175. 

  175. 				break;
    176. 

  176. 

  177. 				case 'tySh': // type tool
    178. 

  178. 				{
    179. 

  179. 					NSMutableArray *fonts=[NSMutableArray array];
    180. 

  180. 

  181. 					[fh skipBytes:52];
    182. 

  182. 					int numfonts=[fh readUInt16BE];
    183. 

  183. 					for(int i=0;i<numfonts;i++)
    184. 

  184. 					{
    185. 

  185. 						[fh skipBytes:6];
    186. 

  186. 						int len=[fh readUInt8];
    187. 

  187. 						NSString *fontname=[[[NSString alloc] initWithData:[fh readDataOfLength:len] encoding:NSISOLatin1StringEncoding] autorelease];
    188. 

  188. 						len=[fh readUInt8];
    189. 

  189. 						[fh skipBytes:len]; // family
    190. 

  190. 						len=[fh readUInt8];
    191. 

  191. 						NSString *fontstyle=[[[NSString alloc] initWithData:[fh readDataOfLength:len] encoding:NSISOLatin1StringEncoding] autorelease];
    192. 

  192. 						[fh skipBytes:2];
    193. 

  193. 						int vecnum=[fh readUInt32BE];
    194. 

  194. 						[fh skipBytes:vecnum*4];
    195. 

  195. 

  196. 						[fonts addObject:[NSString stringWithFormat:@"%@ %@",fontname,fontstyle]];
    197. 

  197. 					}
    198. 

  198. 

  199. 					typetoolfonts=[XeePropertyItem itemsWithLabel:
    200. 

  200. 					NSLocalizedString(@"Text layer fonts",@"Photoshop text layer fonts property title")
    201. 

  201. 					valueArray:fonts];
    202. 

  202. 

  203. 					int numstyles=[fh readUInt16BE];
    204. 

  204. 					[fh skipBytes:numstyles*26+26];
    205. 

  205. 

  206. 					NSMutableString *str=[NSMutableString string];
    207. 

  207. 					int numlines=[fh readUInt16BE];
    208. 

  208. 					for(int i=0;i<numlines;i++)
    209. 

  209. 					{
    210. 

  210. 						int numchars=[fh readUInt32BE];
    211. 

  211. 						[fh skipBytes:4];
    212. 

  212. 						for(int j=0;j<numchars;j++)
    213. 

  213. 						{
    214. 

  214. 							int c=[fh readUInt16BE];
    215. 

  215. 							[fh skipBytes:2];
    216. 

  216. 							if(c=='\n') continue; // skip \n
    217. 

  217. 							if(c=='\r') c='\n'; // and turn \r into \n;
    218. 

  218. 							[str appendFormat:@"%C",c];
    219. 

  219. 						}
    220. 

  220. 					}
    221. 

  221. 

  222. 					typetooltext=[XeePropertyItem itemsWithLabel:
    223. 

  223. 					NSLocalizedString(@"Text layer contents",@"Photoshop text layer contents property title")
    224. 

  224. 					textValue:str];
    225. 

  225. 				}
    226. 

  226. 				break;
    227. 

  227. 

  228. 				case 'luni': // unicode layer name
    229. 

  229. 				{
    230. 

  230. 					if(chunklen<4) break;
    231. 

  231. 					int len=[fh readUInt32BE];
    232. 

  232. 					if(chunklen<4+len*2) break;
    233. 

  233. 					layername=[[[NSString alloc] initWithData:[fh readDataOfLength:len*2]
    234. 

  234. 					encoding:CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingUTF16BE)]
    235. 

  235. 					autorelease];
    236. 

  236. 				}
    237. 

  237. 				break;
    238. 

  238. 

  239. 				case 'lyid': // layer ID name
    240. 

  240. 				break;
    241. 

  241. 				case 'lfx2': // object based effects layer
    242. 

  242. 				break;
    243. 

  243. 				case 'Patt': // patterns
    244. 

  244. 				break;
    245. 

  245. 				case 'clbl': // blend clipping elements
    246. 

  246. 				break;
    247. 

  247. 				case 'infx': // blend interior elements
    248. 

  248. 				break;
    249. 

  249. 				case 'knko': // knockout setting
    250. 

  250. 				break;
    251. 

  251. 				case 'lspf': // protected setting
    252. 

  252. 				break;
    253. 

  253. 				case 'lclr': // sheet color setting
    254. 

  254. 				break;
    255. 

  255. 				case 'fxrp': // reference point
    256. 

  256. 				break;
    257. 

  257. 				case 'grdm': // gradient settings
    258. 

  258. 				break;
    259. 

  259. 				case 'lsct': // section divider setting
    260. 

  260. 				break;
    261. 

  261. 				case 'brst': // channel blending restrictions setting
    262. 

  262. 				break;
    263. 

  263. 				case 'SoCo': // solid color sheet setting
    264. 

  264. 				break;
    265. 

  265. 				case 'PtFl': // pattern fill setting
    266. 

  266. 				break;
    267. 

  267. 				case 'GdFl': // gradient fill setting
    268. 

  268. 				break;
    269. 

  269. 				case 'vmsk': // vector mask setting
    270. 

  270. 				break;
    271. 

  271. 

  272. 				case 'TySh': // type tool object setting
    273. 

  273. 				{
    274. 

  274. 					[fh skipBytes:50];
    275. 

  275. 					if([fh readUInt16BE]!=50) break; // text descriptor version
    276. 

  276. 					if([fh readUInt32BE]!=16) break; // descriptor version
    277. 

  277. 					int classlen=[fh readUInt32BE];
    278. 

  278. 					[fh skipBytes:classlen*2];
    279. 

  279. 					if([fh readUInt32BE]!=0) break;
    280. 

  280. 					if([fh readUInt32BE]!='TxLr') break;
    281. 

  281. 

  282. 					int numitems=[fh readUInt32BE];
    283. 

  283. 

  284. 					if(numitems==0) break;
    285. 

  285. 					if([fh readUInt32BE]!=0) break;
    286. 

  286. 					if([fh readUInt32BE]!='Txt ') break;
    287. 

  287. 					if([fh readUInt32BE]!='TEXT') break;
    288. 

  288. 

  289. 					int textlen=[fh readUInt32BE];
    290. 

  290. 

  291. 					NSMutableString *str=[[[NSMutableString alloc] initWithData:[fh readDataOfLength:textlen*2]
    292. 

  292. 					encoding:CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingUTF16BE)]
    293. 

  293. 					autorelease];
    294. 

  294. 

  295. 					int len=[str length];
    296. 

  296. 					for(int i=0;i<len;i++)
    297. 

  297. 					if([str characterAtIndex:i]=='\r') [str replaceCharactersInRange:NSMakeRange(i,1) withString:@"\n"];
    298. 

  298. 

  299. 					typetooltext=[XeePropertyItem itemsWithLabel:
    300. 

  300. 					NSLocalizedString(@"Text layer contents",@"Photoshop text layer contents property title")
    301. 

  301. 					textValue:str];
    302. 

  302. 

  303. /*					NSData *rest=[fh readDataOfLength:nextchunk-[fh offsetInFile]];
    304. 

  304. 					const uint8_t *restbytes=[rest bytes];
    305. 

  305. 					int restlen=[rest length];
    306. 

  306. 					int offs=XeeOffsetOfStringInMemory("EngineDatatdta",restbytes,restlen);
    307. 

  307. 					if(offs>=0)
    308. 

  308. 					{
    309. 

  309. 						int blocklen=XeeBEUInt32(restbytes+offs+14);
    310. 

  310. 						if(offs+18+blocklen>restlen) break;
    311. 

  311. //						NSData *block=[rest subdataWithRange:NSMakeRange(offs+18,blocklen)];
    312. 

  312. 						NSMutableData *block=[NSMutableData dataWithData:[rest subdataWithRange:NSMakeRange(offs+18,blocklen)]];
    313. 

  313. 						uint8_t *bytes=[block mutableBytes];
    314. 

  314. 						for(int i=0;i<[block length];i++) if(!isspace(bytes[i])&&bytes[i]<=0x20) bytes[i]='.';
    315. 

  315. 						NSLog(@"%@",[[[NSString alloc] initWithData:block encoding:NSISOLatin1StringEncoding] autorelease]);
    316. 

  316. 					}*/
    317. 

  317. 				}
    318. 

  318. 				break;
    319. 

  319. 

  320. 				case 'ffxi': // foreign effect ID
    321. 

  321. 				break;
    322. 

  322. 				case 'lnsr': // layer name source setting
    323. 

  323. 				break;
    324. 

  324. 				case 'shpa': // pattern data
    325. 

  325. 				break;
    326. 

  326. 				case 'shmd': // meta data setting
    327. 

  327. 					NSLog(@"found layer metadata");
    328. 

  328. 				break;
    329. 

  329. 				case 'Layr': // layer data - what
    330. 

  330. 				break;
    331. 

  331. 			}
    332. 

  332. 			[fh seekToFileOffset:nextchunk];
    333. 

  333. 		}
    334. 

  334. 

  335. 		outofbytes:
    336. 

  336. 		if(layername) [props addObject:[XeePropertyItem itemWithLabel:
    337. 

  337. 		NSLocalizedString(@"Layer name",@"Photoshop layer name property title")
    338. 

  338. 		value:layername]];
    339. 

  339. 

  340. 		[props addObject:[XeePropertyItem itemWithLabel:
    341. 

  341. 		NSLocalizedString(@"Opacity",@"Photoshop layer opacity property title")
    342. 

  342. 		value:[NSString stringWithFormat:@"%d%%",(opacity*100)/255]]];
    343. 

  343. 

  344. 		NSString *blendname;
    345. 

  345. 		switch(blendmode)
    346. 

  346. 		{
    347. 

  347. 			case 'norm': blendname=NSLocalizedString(@"Normal",@"Photoshop layer normal blending mode name property value"); break;
    348. 

  348. 			case 'dark': blendname=NSLocalizedString(@"Darken",@"Photoshop layer darken blending mode name property value"); break;
    349. 

  349. 			case 'lite': blendname=NSLocalizedString(@"Lighten",@"Photoshop layer lighten blending mode name property value"); break;
    350. 

  350. 			case 'hue ': blendname=NSLocalizedString(@"Hue",@"Photoshop layer hue blending mode name property value"); break;
    351. 

  351. 			case 'sat ': blendname=NSLocalizedString(@"Saturation",@"Photoshop layer normal blending mode name property value"); break;
    352. 

  352. 			case 'colr': blendname=NSLocalizedString(@"Color",@"Photoshop layer color blending mode name property value"); break;
    353. 

  353. 			case 'lum ': blendname=NSLocalizedString(@"Luminosity",@"Photoshop layer luminosity blending mode name property value"); break;
    354. 

  354. 			case 'mul ': blendname=NSLocalizedString(@"Multiply",@"Photoshop layer multiply blending mode name property value"); break;
    355. 

  355. 			case 'scrn': blendname=NSLocalizedString(@"Screen",@"Photoshop layer screen blending mode name property value"); break;
    356. 

  356. 			case 'diss': blendname=NSLocalizedString(@"Dissolve",@"Photoshop layer dissolve blending mode name property value"); break;
    357. 

  357. 			case 'over': blendname=NSLocalizedString(@"Overlay",@"Photoshop layer overlay blending mode name property value"); break;
    358. 

  358. 			case 'hLit': blendname=NSLocalizedString(@"Hard light",@"Photoshop layer hard light blending mode name property value"); break;
    359. 

  359. 			case 'sLit': blendname=NSLocalizedString(@"Soft light",@"Photoshop layer soft light blending mode name property value"); break;
    360. 

  360. 			case 'diff': blendname=NSLocalizedString(@"Difference",@"Photoshop layer difference blending mode name property value"); break;
    361. 

  361. 			case 'smud': blendname=NSLocalizedString(@"Exclusion",@"Photoshop layer exclusion blending mode name property value"); break;
    362. 

  362. 			case 'div ': blendname=NSLocalizedString(@"Color dodge",@"Photoshop layer color dodge blending mode name property value"); break;
    363. 

  363. 			case 'idiv': blendname=NSLocalizedString(@"Color burn",@"Photoshop layer color burn blending mode name property value"); break;
    364. 

  364. 			default:
    365. 

  365. 				blendname=[NSString stringWithFormat:
    366. 

  366. 				NSLocalizedString(@"Unknown (%c%c%c%c)",@"Photoshop layer unknown blending mode name property value"),
    367. 

  367. 				(blendmode>>24)&0xff,(blendmode>>16)&0xff,(blendmode>>8)&0xff,blendmode&0xff];
    368. 

  368. 			break;
    369. 

  369. 		}
    370. 

  370. 		[props addObject:[XeePropertyItem itemWithLabel:
    371. 

  371. 		NSLocalizedString(@"Blending mode",@"Photoshop layer blending mode property title")
    372. 

  372. 		value:blendname]];
    373. 

  373. 

  374. 		if(adjustmentname) [props addObject:[XeePropertyItem itemWithLabel:
    375. 

  375. 		NSLocalizedString(@"Adjustment layer",@"Photoshop adjustment layer property title")
    376. 

  376. 		value:adjustmentname]];
    377. 

  377. 

  378. 		if(typetooltext) [props addObjectsFromArray:typetooltext];
    379. 

  379. 		if(typetoolfonts) [props addObjectsFromArray:typetoolfonts];
    380. 

  380. 

  381. 		[fh seekToFileOffset:nextoffs];
    382. 

  382. 	}
    383. 

  383. 	return self;
    384. 

  384. }
    385. 

  385. 

  386. -(void)dealloc
    387. 

  387. {
    388. 

  388. 	[handle release];
    389. 

  389. 	[props release];
    390. 

  390. 	[channeloffs release];
    391. 

  391. 	[super dealloc];
    392. 

  392. }
    393. 

  393. 

  394. 

  395. 

  396. -(void)setDataOffset:(off_t)offset
    397. 

  397. {
    398. 

  398. 	dataoffs=offset;
    399. 

  399. 	[handle seekToFileOffset:offset];
    400. 

  400. 	compression=[handle readUInt16BE];
    401. 

  401. }
    402. 

  402. 

  403. -(off_t)totalSize { return totalsize; }
    404. 

  404. 

  405. 

  406. 

  407. -(XeeImage *)image
    408. 

  408. {
    409. 

  409. 	XeeImage *image=nil;
    410. 

  410. 	BOOL hasalpha=[self hasAlpha];
    411. 

  411. 

  412. 	switch(mode)
    413. 

  413. 	{
    414. 

  414. 		case XeePhotoshopBitmapMode:
    415. 

  415. 			image=[[[XeeBitmapRawImage alloc] initWithHandle:[self handleForChannel:0] width:width height:height] autorelease];
    416. 

  416. 			[image setDepthBitmap];
    417. 

  417. 		break;
    418. 

  418. 

  419. //		case XeePhotoshopIndexedMode: [self setDepthIndexed:1<<bitdepth]; break;
    420. 

  420. 

  421. 		case XeePhotoshopGreyscaleMode:
    422. 

  422. 		case XeePhotoshopDuotoneMode:
    423. 

  423. 			image=[[[XeeRawImage alloc] initWithHandle:[self handleForNumberOfChannels:1]
    424. 

  424. 			width:width height:height depth:depth colourSpace:XeeGreyRawColourSpace
    425. 

  425. 			flags:XeeBigEndianRawFlag|(hasalpha?XeeAlphaLastRawFlag:0)|(depth==32?XeeFloatingPointRawFlag:0)]
    426. 

  426. 			autorelease];
    427. 

  427. 

  428. 			if(mode==XeePhotoshopGreyscaleMode) [image setDepthGrey:depth alpha:hasalpha floating:depth==32?YES:NO];
    429. 

  429. 			else [image setDepth:[NSString stringWithFormat:NSLocalizedString(@"%d bits duotone",@"Description for duotone (Photoshop) images"),depth]
    430. 

  430. 			iconName:@"depth_rgb"];
    431. 

  431. 		break;
    432. 

  432. 

  433. 		case XeePhotoshopRGBMode:
    434. 

  434. 			image=[[[XeeRawImage alloc] initWithHandle:[self handleForNumberOfChannels:3]
    435. 

  435. 			width:width height:height depth:depth colourSpace:XeeRGBRawColourSpace
    436. 

  436. 			flags:XeeBigEndianRawFlag|(hasalpha?XeeAlphaLastRawFlag:0)|(depth==32?XeeFloatingPointRawFlag:0)]
    437. 

  437. 			autorelease];
    438. 

  438. 

  439. 			[image setDepthRGB:depth alpha:hasalpha floating:depth==32?YES:NO];
    440. 

  440.  		break;
    441. 

  441. 

  442. 		case XeePhotoshopCMYKMode:
    443. 

  443. 			image=[[[XeeRawImage alloc] initWithHandle:[self handleForNumberOfChannels:4]
    444. 

  444. 			width:width height:height depth:depth colourSpace:XeeCMYKRawColourSpace
    445. 

  445. 			flags:XeeBigEndianRawFlag|(hasalpha?XeeAlphaLastRawFlag:0)]
    446. 

  446. 			autorelease];
    447. 

  447. 

  448. 			[(XeeRawImage *)image setZeroPoint:1 onePoint:0 forChannel:0];
    449. 

  449. 			[(XeeRawImage *)image setZeroPoint:1 onePoint:0 forChannel:1];
    450. 

  450. 			[(XeeRawImage *)image setZeroPoint:1 onePoint:0 forChannel:2];
    451. 

  451. 			[(XeeRawImage *)image setZeroPoint:1 onePoint:0 forChannel:3];
    452. 

  452. 

  453. 			[image setDepthCMYK:depth alpha:hasalpha];
    454. 

  454.  		break;
    455. 

  455. 

  456. 		case XeePhotoshopLabMode:
    457. 

  457. 			image=[[[XeeRawImage alloc] initWithHandle:[self handleForNumberOfChannels:3]
    458. 

  458. 			width:width height:height depth:depth colourSpace:XeeLabRawColourSpace
    459. 

  459. 			flags:XeeBigEndianRawFlag|(hasalpha?XeeAlphaLastRawFlag:0)]
    460. 

  460. 			autorelease];
    461. 

  461. 

  462. 			[image setDepthLab:depth alpha:hasalpha];
    463. 

  463.  		break;
    464. 

  464. 

  465. 		default:
    466. 

  466. 			return nil;
    467. 

  467. 	}
    468. 

  468. 

  469. 	[image setProperties:[NSArray arrayWithObject:[XeePropertyItem itemWithLabel:
    470. 

  470. 	NSLocalizedString(@"Photoshop layer properties",@"Photoshop layer properties section title")
    471. 

  471. 	value:props identifier:@"pslayer"]]];
    472. 

  472. 

  473. 	return image;
    474. 

  474. }
    475. 

  475. 

  476. -(CSHandle *)handleForNumberOfChannels:(int)requiredchannels
    477. 

  477. {
    478. 

  478. 	NSMutableArray *array=[NSMutableArray array];
    479. 

  479. 	for(int i=0;i<requiredchannels;i++)
    480. 

  480. 	{
    481. 

  481. 		CSHandle *fh=[self handleForChannel:i];
    482. 

  482. 		if(!handle) return nil;
    483. 

  483. 		[array addObject:fh];
    484. 

  484. 	}
    485. 

  485. 	CSHandle *alphahandle=[self handleForChannel:-1];
    486. 

  486. 	if(alphahandle) [array addObject:alphahandle];
    487. 

  487. 

  488. 	if([array count]==1) return [array objectAtIndex:0];
    489. 

  489. 	else return [[[XeeInterleavingHandle alloc] initWithHandles:array elementSize:depth] autorelease];
    490. 

  490. }
    491. 

  491. 

  492. -(CSHandle *)handleForChannel:(int)channel
    493. 

  493. {
    494. 

  494. 	NSNumber *offs=[channeloffs objectForKey:[NSNumber numberWithInt:channel]];
    495. 

  495. 	if(!offs) return nil;
    496. 

  496. 

  497. 	off_t start=dataoffs+2+[offs longLongValue];
    498. 

  498. 	CSFileHandle *fh;
    499. 

  499. 

  500. 	switch(compression)
    501. 

  501. 	{
    502. 

  502. 		case 0:
    503. 

  503. 			fh=[[handle copy] autorelease];
    504. 

  504. 			[fh seekToFileOffset:start];
    505. 

  505. 			return fh;
    506. 

  506. 

  507. 		case 1:
    508. 

  508. 			fh=[[handle copy] autorelease];
    509. 

  509. 			[fh seekToFileOffset:start];
    510. 

  510. 			return [[[XeePackbitsHandle alloc] initWithHandle:fh rows:height bytesPerRow:(width*depth+7)/8
    511. 

  511. 			channel:0 of:1 previousSize:0] autorelease];
    512. 

  512. 

  513. 		case 2:
    514. 

  514. 			fh=[[handle copy] autorelease];
    515. 

  515. 			[fh seekToFileOffset:start];
    516. 

  516. 			return [CSZlibHandle zlibHandleWithHandle:fh];
    517. 

  517. 

  518. 		case 3:
    519. 

  519. 			fh=[[handle copy] autorelease];
    520. 

  520. 			[fh seekToFileOffset:start];
    521. 

  521. 			return [[[XeeDeltaHandle alloc] initWithHandle:[CSZlibHandle zlibHandleWithHandle:fh]
    522. 

  522. 			depth:depth columns:width] autorelease];
    523. 

  523. 

  524. 		default:
    525. 

  525. 			return nil;
    526. 

  526. 	}
    527. 

  527. }
    528. 

  528. 

  529. -(BOOL)hasAlpha { return [channeloffs objectForKey:[NSNumber numberWithInt:-1]]?YES:NO; }
    530. 

  530. 

  531. @end
    532.