mdw@git.distorted.org.uk Git - ssr/blob - StraySrc/Libraries/Steel/s/colourtran

   1 ;
   2 ; colourtran.s
   3 ;
   4 ; ColourTrans interface
   5 ;
   6 ; © 1994-1998 Straylight
   7 ;
   8
   9 ;----- Licensing note -------------------------------------------------------
  10 ;
  11 ; This file is part of Straylight's Steel library.
  12 ;
  13 ; Steel is free software; you can redistribute it and/or modify
  14 ; it under the terms of the GNU General Public License as published by
  15 ; the Free Software Foundation; either version 2, or (at your option)
  16 ; any later version.
  17 ;
  18 ; Steel is distributed in the hope that it will be useful,
  19 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ; GNU General Public License for more details.
  22 ;
  23 ; You should have received a copy of the GNU General Public License
  24 ; along with Steel.  If not, write to the Free Software Foundation,
  25 ; 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26
  27 ;----- Standard header ------------------------------------------------------
  28
  29                 GET     libs:header
  30                 GET     libs:swis
  31
  32 ;----- Main code ------------------------------------------------------------
  33
  34                 AREA    |C$$Code|,CODE,READONLY
  35
  36 ; --- colourtran_select_table ---
  37 ;
  38 ; On entry:     a1 == source mode
  39 ;               a2 == pointer to source palette
  40 ;               a3 == destination mode
  41 ;               a4 == pointer to destination palette
  42 ;               [sp,#0] == pointer to buffer to fill with table
  43 ;               [sp,#4] == flags word
  44 ;
  45 ; We don't support the transfer function, because it's not APCS.
  46
  47                 EXPORT  colourtran_select_table
  48 colourtran_select_table
  49                 MOV     ip,sp
  50                 STMFD   sp!,{v1,v2,lr}
  51                 CMP     a1,#256
  52                 LDMGEIA ip,{v1,v2}
  53                 LDRLT   v1,[ip]
  54                 SWI     XColourTrans_SelectTable
  55                 MOVVC   a1,#0
  56                 LDMFD   sp!,{v1,v2,pc}^
  57
  58 ; --- colourtran_select_GCOLtable ---
  59 ;
  60 ; On entry:     a1 == source mode
  61 ;               a2 == pointer to source palette
  62 ;               a3 == destination mode
  63 ;               a4 == pointer to destination palette
  64 ;               [sp,#0] == pointer to buffer to fill in
  65 ;               [sp,#4] == flags word
  66
  67                 EXPORT  colourtran_select_GCOLtable
  68 colourtran_select_GCOLtable
  69                 MOV     ip,sp
  70                 STMFD   sp!,{v1,v2,lr}
  71                 CMP     a1,#256
  72                 LDMGEIA ip,{v1,v2}
  73                 LDRLT   v1,[ip]
  74                 SWI     XColourTrans_SelectGCOLTable
  75                 MOVVC   a1,#0
  76                 LDMFD   sp!,{v1,v2,pc}^
  77
  78 ; --- colourtran_returnGCOL ---
  79 ;
  80 ; On entry:     a1 == palette entry
  81 ;               a2 == pointer to GCOL word to store
  82
  83                 EXPORT  colourtran_returnGCOL
  84 colourtran_returnGCOL
  85                 SWI     XColourTrans_ReturnGCOL
  86                 STRVC   a1,[a2]
  87                 MOVVC   a1,#0
  88                 MOVS    pc,lr
  89
  90 ; --- colourtran_setGCOL ---
  91 ;
  92 ; On entry:     a1 == palette entry
  93 ;               a2 == flags word
  94 ;               a3 == GCOL action to set
  95 ;               a4 == pointer to where to store the output
  96
  97                 EXPORT  colourtran_setGCOL
  98 colourtran_setGCOL
  99                 STMFD   sp!,{a4,v1,lr}
 100                 MOV     v1,a3
 101                 MOV     a4,a2
 102                 SWI     XColourTrans_SetGCOL
 103                 LDR     a2,[sp],#4
 104                 STRVC   a1,[a2]
 105                 MOVVC   a1,#0
 106                 LDMFD   sp!,{v1,pc}^
 107
 108 ; --- colourtran_return_colournumber ---
 109 ;
 110 ; On entry:     a1 == palette entry
 111 ;               a2 == pointer to where to put the colour
 112
 113                 EXPORT  colourtran_return_colournumber
 114 colourtran_return_colournumber
 115                 SWI     XColourTrans_ReturnColourNumber
 116                 STRVC   a1,[a2]
 117                 MOVVC   a1,#0
 118                 MOVS    pc,lr
 119
 120 ; --- colourtran_return_GCOLformode ---
 121 ;
 122 ; On entry:     a1 == palette entry
 123 ;               a2 == destination mode number
 124 ;               a3 == pointer to destination palette
 125 ;               a4 == pointer to where to store the colour
 126
 127                 EXPORT  colourtran_return_GCOLformode
 128 colourtran_return_GCOLformode
 129                 SWI     XColourTrans_ReturnGCOLForMode
 130                 STRVC   a1,[a4]
 131                 MOVVC   a1,#0
 132                 MOVS    pc,lr
 133
 134 ; --- colourtran_return_colourformode ---
 135 ;
 136 ; On entry:     a1 == palette entry to set
 137 ;               a2 == destination mode number
 138 ;               a3 == pointer to destination palette
 139 ;               a4 == pointer to where to store the number
 140
 141                 EXPORT  colourtran_return_colourformode
 142 colourtran_return_colourformode
 143                 SWI     XColourTrans_ReturnColourNumberForMode
 144                 STRVC   a1,[a4]
 145                 MOVVC   a1,#0
 146                 MOVS    pc,lr
 147
 148 ; --- colourtran_return_OppGCOL ---
 149 ;
 150 ; On entry:     a1 == palette entry
 151 ;               a2 == pointer to where to store the GCOL
 152
 153                 EXPORT  colourtran_return_OppGCOL
 154 colourtran_return_OppGCOL
 155                 SWI     XColourTrans_ReturnOppGCOL
 156                 STRVC   a1,[a2]
 157                 MOVVC   a1,#0
 158                 MOVS    pc,lr
 159
 160 ; --- colourtran_setOppGCOL ---
 161 ;
 162 ; On entry:     a1 == palette entry
 163 ;               a2 == flags word
 164 ;               a3 == GCOL action to set
 165 ;               a4 == pointer to where to store the output
 166
 167                 EXPORT  colourtran_setOppGCOL
 168 colourtran_setOppGCOL
 169                 STMFD   sp!,{a4,v1,lr}
 170                 MOV     v1,a3
 171                 MOV     a4,a2
 172                 SWI     XColourTrans_SetOppGCOL
 173                 LDR     a2,[sp],#4
 174                 STRVC   a1,[a2]
 175                 MOVVC   a1,#0
 176                 LDMFD   sp!,{v1,pc}^
 177
 178 ; --- colourtran_return_Oppcolournumber ---
 179 ;
 180 ; On entry:     a1 == palette entry
 181 ;               a2 == pointer to where to store the colour
 182
 183                 EXPORT  colourtran_return_Oppcolournumber
 184 colourtran_return_Oppcolournumber
 185                 SWI     XColourTrans_ReturnOppColourNumber
 186                 STRVC   a1,[a2]
 187                 MOVVC   a1,#0
 188                 MOVS    pc,lr
 189
 190 ; --- colourtran_return_OppGCOLformode ---
 191 ;
 192 ; On entry:     a1 == a1 == palette entry
 193 ;               a2 == destination mode number
 194 ;               a3 == pointer to destination palette
 195 ;               a4 == pointer to where to store the colour
 196
 197                 EXPORT  colourtran_return_OppGCOLformode
 198 colourtran_return_OppGCOLformode
 199                 SWI     XColourTrans_ReturnOppGCOLForMode
 200                 STRVC   a1,[a4]
 201                 MOVVC   a1,#0
 202                 MOVS    pc,lr
 203
 204 ; --- colourtran_return_Oppcolourformode ---
 205 ;
 206 ; On entry:     a1 == palette entry to set
 207 ;               a2 == destination mode number
 208 ;               a3 == pointer to destination palette
 209 ;               a4 == pointer to where to store the number
 210
 211                 EXPORT  colourtran_return_Oppcolourformode
 212 colourtran_return_Oppcolourformode
 213                 SWI     XColourTrans_ReturnOppColourNumberForMode
 214                 STRVC   a1,[a4]
 215                 MOVVC   a1,#0
 216                 MOVS    pc,lr
 217
 218 ; --- colourtran_GCOL_tocolournumber ---
 219 ;
 220 ; On entry:     a1 == GCOL to convert
 221 ;               a2 == pointer to where to put colour number
 222
 223                 EXPORT  colourtran_GCOL_tocolournumber
 224 colourtran_GCOL_tocolournumber
 225                 SWI     XColourTrans_GCOLToColourNumber
 226                 STRVC   a1,[a2]
 227                 MOVVC   a1,#0
 228                 MOVS    pc,lr
 229
 230 ; --- colourtran_colournumbertoGCOL ---
 231 ;
 232 ; On entry:     a1 == colour number to convert
 233 ;               a2 == pointer to where to put GCOL
 234
 235                 EXPORT  colourtran_colournumbertoGCOL
 236 colourtran_colournumbertoGCOL
 237                 SWI     XColourTrans_ColourNumberToGCOL
 238                 STRVC   a1,[a2]
 239                 MOVVC   a1,#0
 240                 MOVS    pc,lr
 241
 242 ; --- colourtran_returnfontcolours ---
 243 ;
 244 ; On entry:     a1 == pointer to font handle
 245 ;               a2 == pointer to background palette entry
 246 ;               a3 == pointer to foreground palette entry
 247 ;               a4 == pointer to amount of antialiasing to do
 248 ;
 249 ; Christ knows what all this is about.  Well, I hope so, 'cos I haven't got
 250 ; a clue.  For a start, ColourTrans_ReturnFontColours preserves R0, so
 251 ; passing the font handle through a pointer is really silly.  For seconds,
 252 ; the output R1 and R2 values aren't palette entries at all.  My verdict:
 253 ; someone at Acorn doesn't have a clue.  But then again, what do you expect
 254 ; from SWI veneers written in C?
 255
 256                 EXPORT  colourtran_returnfontcolours
 257 colourtran_returnfontcolours
 258                 STMFD   sp!,{a1-a4}
 259                 LDR     a1,[a1]
 260                 LDR     a2,[a2]
 261                 LDR     a3,[a3]
 262                 LDR     a4,[a4]
 263                 SWI     XColourTrans_ReturnFontColours
 264                 LDR     ip,[sp],#4
 265                 STRVC   a1,[ip]
 266                 LDR     ip,[sp],#4
 267                 STRVC   a2,[ip]
 268                 LDR     ip,[sp],#4
 269                 STRVC   a3,[ip]
 270                 LDR     ip,[sp],#4
 271                 STRVC   a4,[ip]
 272                 MOVVC   a1,#0
 273                 MOVS    pc,lr
 274
 275 ; --- colourtran_setfontcolours ---
 276 ;
 277 ; On entry:     The same braindead pointers as the last one
 278
 279                 EXPORT  colourtran_setfontcolours
 280 colourtran_setfontcolours
 281                 STMFD   sp!,{a1-a4}
 282                 LDR     a1,[a1]
 283                 LDR     a2,[a2]
 284                 LDR     a3,[a3]
 285                 LDR     a4,[a4]
 286                 SWI     XColourTrans_SetFontColours
 287                 LDR     ip,[sp],#4
 288                 STRVC   a1,[ip]
 289                 LDR     ip,[sp],#4
 290                 STRVC   a2,[ip]
 291                 LDR     ip,[sp],#4
 292                 STRVC   a3,[ip]
 293                 LDR     ip,[sp],#4
 294                 STRVC   a4,[ip]
 295                 MOVVC   a1,#0
 296                 MOVS    pc,lr
 297
 298 ; --- colourtran_invalidate_cache ---
 299 ;
 300 ; On entry:     --
 301
 302                 EXPORT  colourtran_invalidate_cache
 303 colourtran_invalidate_cache
 304                 SWI     ColourTrans_InvalidateCache
 305                 MOVVC   a1,#0
 306                 MOVS    pc,lr
 307
 308 ; --- Omitted veneers ---
 309 ;
 310 ; Setting and reading calibration tables is not supported.  Applications
 311 ; probably shouldn't be doing this sort of thing anyway.
 312
 313 ; --- colourtran_convert_device_colour ---
 314 ;
 315 ; On entry:     a1 == palette entry to convert
 316 ;               a2 == pointer to where to store the standard colour
 317
 318                 EXPORT  colourtran_convert_device_colour
 319 colourtran_convert_device_colour
 320                 STR     a2,[sp,#-4]!
 321                 MOV     a4,#0
 322                 MOV     a2,a1
 323                 SWI     XColourTrans_ConvertDeviceColour
 324                 LDR     a2,[sp],#4
 325                 STRVC   a3,[a2]
 326                 MOVVC   a1,#0
 327                 MOVS    pc,lr
 328
 329 ; --- colourtran_convertRGBToCIE ---
 330 ;
 331 ; On entry:     a1 == pointer to RGB block
 332 ;               a2 == pointer to CIE block
 333
 334                 EXPORT  colourtran_convertRGBToCIE
 335 colourtran_convertRGBToCIE
 336                 STR     a2,[sp,#-4]!
 337                 LDMIA   a1,{a1-a3}
 338                 SWI     XColourTrans_ConvertRGBToCIE
 339                 LDR     ip,[sp],#4
 340                 STMVCIA ip,{a1-a3}
 341                 MOVVC   a1,#0
 342                 MOVS    pc,lr
 343
 344 ; --- colourtran_convertCIEToRGB ---
 345 ;
 346 ; On entry:     a1 == pointer to CIE block
 347 ;               a2 == pointer to RGB block
 348
 349                 EXPORT  colourtran_convertCIEToRGB
 350 colourtran_convertCIEToRGB
 351                 STR     a2,[sp,#-4]!
 352                 LDMIA   a1,{a1-a3}
 353                 SWI     XColourTrans_ConvertCIEToRGB
 354                 LDR     ip,[sp],#4
 355                 STMVCIA ip,{a1-a3}
 356                 MOVVC   a1,#0
 357                 MOVS    pc,lr
 358
 359 ; --- colourtran_convertRGBToHSV ---
 360 ;
 361 ; On entry:     a1 == pointer to RGB block
 362 ;               a2 == pointer to CIE block
 363
 364                 EXPORT  colourtran_convertRGBToHSV
 365 colourtran_convertRGBToHSV
 366                 STR     a2,[sp,#-4]!
 367                 LDMIA   a1,{a1-a3}
 368                 SWI     XColourTrans_ConvertRGBToHSV
 369                 LDR     ip,[sp],#4
 370                 STMVCIA ip,{a1-a3}
 371                 MOVVC   a1,#0
 372                 MOVS    pc,lr
 373
 374 ; --- colourtran_convertHSVToRGB ---
 375 ;
 376 ; On entry:     a1 == pointer to CIE block
 377 ;               a2 == pointer to RGB block
 378
 379                 EXPORT  colourtran_convertHSVToRGB
 380 colourtran_convertHSVToRGB
 381                 STR     a2,[sp,#-4]!
 382                 LDMIA   a1,{a1-a3}
 383                 SWI     XColourTrans_ConvertHSVToRGB
 384                 LDR     ip,[sp],#4
 385                 STMVCIA ip,{a1-a3}
 386                 MOVVC   a1,#0
 387                 MOVS    pc,lr
 388
 389 ; --- colourtran_convertRGBToCMYK ---
 390 ;
 391 ; On entry:     a1 == pointer to RGB block
 392 ;               a2 == pointer to CIE block
 393
 394                 EXPORT  colourtran_convertRGBToCMYK
 395 colourtran_convertRGBToCMYK
 396                 STR     a2,[sp,#-4]!
 397                 LDMIA   a1,{a1-a3}
 398                 SWI     XColourTrans_ConvertRGBToCMYK
 399                 LDR     ip,[sp],#4
 400                 STMVCIA ip,{a1-a4}
 401                 MOVVC   a1,#0
 402                 MOVS    pc,lr
 403
 404 ; --- colourtran_convertCMYKToRGB ---
 405 ;
 406 ; On entry:     a1 == pointer to CIE block
 407 ;               a2 == pointer to RGB block
 408
 409                 EXPORT  colourtran_convertCMYKToRGB
 410 colourtran_convertCMYKToRGB
 411                 STR     a2,[sp,#-4]!
 412                 LDMIA   a1,{a1-a4}
 413                 SWI     XColourTrans_ConvertCMYKToRGB
 414                 LDR     ip,[sp],#4
 415                 STMVCIA ip,{a1-a3}
 416                 MOVVC   a1,#0
 417                 MOVS    pc,lr
 418
 419 ;----- That's all, folks ----------------------------------------------------
 420
 421                 END