Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Raster file routines for CUPS. |
| 3 | * |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 4 | * Copyright 2007-2019 by Apple Inc. |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 5 | * Copyright 1997-2006 by Easy Software Products. |
| 6 | * |
| 7 | * This file is part of the CUPS Imaging library. |
| 8 | * |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 9 | * Licensed under Apache License v2.0. See the file "LICENSE" for more |
| 10 | * information. |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 11 | */ |
| 12 | |
| 13 | /* |
| 14 | * Include necessary headers... |
| 15 | */ |
| 16 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 17 | #include "raster-private.h" |
| 18 | #include "debug-internal.h" |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 19 | #ifdef HAVE_STDINT_H |
| 20 | # include <stdint.h> |
| 21 | #endif /* HAVE_STDINT_H */ |
| 22 | |
| 23 | |
| 24 | /* |
| 25 | * Private structures... |
| 26 | */ |
| 27 | |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 28 | typedef void (*_cups_copyfunc_t)(void *dst, const void *src, size_t bytes); |
| 29 | |
| 30 | |
| 31 | /* |
| 32 | * Local globals... |
| 33 | */ |
| 34 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 35 | static const char * const apple_media_types[] = |
| 36 | { /* media-type values for Apple Raster */ |
| 37 | "auto", |
| 38 | "stationery", |
| 39 | "transparency", |
| 40 | "envelope", |
| 41 | "cardstock", |
| 42 | "labels", |
| 43 | "stationery-letterhead", |
| 44 | "disc", |
| 45 | "photographic-matte", |
| 46 | "photographic-satin", |
| 47 | "photographic-semi-gloss", |
| 48 | "photographic-glossy", |
| 49 | "photographic-high-gloss", |
| 50 | "other" |
| 51 | }; |
| 52 | |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 53 | #ifdef DEBUG |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 54 | static const char * const cups_modes[] = |
| 55 | { /* Open modes */ |
| 56 | "CUPS_RASTER_READ", |
| 57 | "CUPS_RASTER_WRITE", |
| 58 | "CUPS_RASTER_WRITE_COMPRESSED", |
| 59 | "CUPS_RASTER_WRITE_PWG", |
| 60 | "CUPS_RASTER_WRITE_APPLE" |
| 61 | }; |
| 62 | #endif /* DEBUG */ |
| 63 | |
| 64 | |
| 65 | /* |
| 66 | * Local functions... |
| 67 | */ |
| 68 | |
| 69 | static ssize_t cups_raster_io(cups_raster_t *r, unsigned char *buf, size_t bytes); |
| 70 | static ssize_t cups_raster_read(cups_raster_t *r, unsigned char *buf, size_t bytes); |
| 71 | static int cups_raster_update(cups_raster_t *r); |
| 72 | static ssize_t cups_raster_write(cups_raster_t *r, const unsigned char *pixels); |
| 73 | static void cups_swap(unsigned char *buf, size_t bytes); |
| 74 | static void cups_swap_copy(unsigned char *dst, const unsigned char *src, size_t bytes); |
| 75 | |
| 76 | |
| 77 | /* |
| 78 | * '_cupsRasterColorSpaceString()' - Return the colorspace name for a |
| 79 | * cupsColorSpace value. |
| 80 | */ |
| 81 | |
| 82 | const char * |
| 83 | _cupsRasterColorSpaceString( |
| 84 | cups_cspace_t cspace) /* I - cupsColorSpace value */ |
| 85 | { |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 86 | static const char * const cups_color_spaces[] = |
| 87 | { /* Color spaces */ |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 88 | "W", |
| 89 | "RGB", |
| 90 | "RGBA", |
| 91 | "K", |
| 92 | "CMY", |
| 93 | "YMC", |
| 94 | "CMYK", |
| 95 | "YMCK", |
| 96 | "KCMY", |
| 97 | "KCMYcm", |
| 98 | "GMCK", |
| 99 | "GMCS", |
| 100 | "WHITE", |
| 101 | "GOLD", |
| 102 | "SILVER", |
| 103 | "CIEXYZ", |
| 104 | "CIELab", |
| 105 | "RGBW", |
| 106 | "SW", |
| 107 | "SRGB", |
| 108 | "ADOBERGB", |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 109 | "21", |
| 110 | "22", |
| 111 | "23", |
| 112 | "24", |
| 113 | "25", |
| 114 | "26", |
| 115 | "27", |
| 116 | "28", |
| 117 | "29", |
| 118 | "30", |
| 119 | "31", |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 120 | "ICC1", |
| 121 | "ICC2", |
| 122 | "ICC3", |
| 123 | "ICC4", |
| 124 | "ICC5", |
| 125 | "ICC6", |
| 126 | "ICC7", |
| 127 | "ICC8", |
| 128 | "ICC9", |
| 129 | "ICCA", |
| 130 | "ICCB", |
| 131 | "ICCC", |
| 132 | "ICCD", |
| 133 | "ICCE", |
| 134 | "ICCF", |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 135 | "47", |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 136 | "DEVICE1", |
| 137 | "DEVICE2", |
| 138 | "DEVICE3", |
| 139 | "DEVICE4", |
| 140 | "DEVICE5", |
| 141 | "DEVICE6", |
| 142 | "DEVICE7", |
| 143 | "DEVICE8", |
| 144 | "DEVICE9", |
| 145 | "DEVICEA", |
| 146 | "DEVICEB", |
| 147 | "DEVICEC", |
| 148 | "DEVICED", |
| 149 | "DEVICEE", |
| 150 | "DEVICEF" |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 151 | }; |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 152 | |
| 153 | if (cspace < CUPS_CSPACE_W || cspace > CUPS_CSPACE_DEVICEF) |
| 154 | return ("Unknown"); |
| 155 | else |
| 156 | return (cups_color_spaces[cspace]); |
| 157 | } |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 158 | |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 159 | |
| 160 | /* |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 161 | * '_cupsRasterDelete()' - Free a raster stream. |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 162 | * |
| 163 | * The file descriptor associated with the raster stream must be closed |
| 164 | * separately as needed. |
| 165 | */ |
| 166 | |
| 167 | void |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 168 | _cupsRasterDelete(cups_raster_t *r) /* I - Stream to free */ |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 169 | { |
| 170 | if (r != NULL) |
| 171 | { |
| 172 | if (r->buffer) |
| 173 | free(r->buffer); |
| 174 | |
| 175 | if (r->pixels) |
| 176 | free(r->pixels); |
| 177 | |
| 178 | free(r); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | |
| 183 | /* |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 184 | * '_cupsRasterInitPWGHeader()' - Initialize a page header for PWG Raster output. |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 185 | * |
| 186 | * The "media" argument specifies the media to use. |
| 187 | * |
| 188 | * The "type" argument specifies a "pwg-raster-document-type-supported" value |
| 189 | * that controls the color space and bit depth of the raster data. |
| 190 | * |
| 191 | * The "xres" and "yres" arguments specify the raster resolution in dots per |
| 192 | * inch. |
| 193 | * |
| 194 | * The "sheet_back" argument specifies a "pwg-raster-document-sheet-back" value |
| 195 | * to apply for the back side of a page. Pass @code NULL@ for the front side. |
| 196 | * |
| 197 | * @since CUPS 2.2/macOS 10.12@ |
| 198 | */ |
| 199 | |
| 200 | int /* O - 1 on success, 0 on failure */ |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 201 | _cupsRasterInitPWGHeader( |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 202 | cups_page_header2_t *h, /* I - Page header */ |
| 203 | pwg_media_t *media, /* I - PWG media information */ |
| 204 | const char *type, /* I - PWG raster type string */ |
| 205 | int xdpi, /* I - Cross-feed direction (horizontal) resolution */ |
| 206 | int ydpi, /* I - Feed direction (vertical) resolution */ |
| 207 | const char *sides, /* I - IPP "sides" option value */ |
| 208 | const char *sheet_back) /* I - Transform for back side or @code NULL@ for none */ |
| 209 | { |
| 210 | if (!h || !media || !type || xdpi <= 0 || ydpi <= 0) |
| 211 | { |
| 212 | _cupsRasterAddError("%s", strerror(EINVAL)); |
| 213 | return (0); |
| 214 | } |
| 215 | |
| 216 | /* |
| 217 | * Initialize the page header... |
| 218 | */ |
| 219 | |
| 220 | memset(h, 0, sizeof(cups_page_header2_t)); |
| 221 | |
| 222 | strlcpy(h->cupsPageSizeName, media->pwg, sizeof(h->cupsPageSizeName)); |
| 223 | |
| 224 | h->PageSize[0] = (unsigned)(72 * media->width / 2540); |
| 225 | h->PageSize[1] = (unsigned)(72 * media->length / 2540); |
| 226 | |
| 227 | /* This never gets written but is needed for some applications */ |
| 228 | h->cupsPageSize[0] = 72.0f * media->width / 2540.0f; |
| 229 | h->cupsPageSize[1] = 72.0f * media->length / 2540.0f; |
| 230 | |
| 231 | h->ImagingBoundingBox[2] = h->PageSize[0]; |
| 232 | h->ImagingBoundingBox[3] = h->PageSize[1]; |
| 233 | |
| 234 | h->HWResolution[0] = (unsigned)xdpi; |
| 235 | h->HWResolution[1] = (unsigned)ydpi; |
| 236 | |
| 237 | h->cupsWidth = (unsigned)(media->width * xdpi / 2540); |
| 238 | h->cupsHeight = (unsigned)(media->length * ydpi / 2540); |
| 239 | |
| 240 | if (h->cupsWidth > 0x00ffffff || h->cupsHeight > 0x00ffffff) |
| 241 | { |
| 242 | _cupsRasterAddError("Raster dimensions too large."); |
| 243 | return (0); |
| 244 | } |
| 245 | |
| 246 | h->cupsInteger[CUPS_RASTER_PWG_ImageBoxRight] = h->cupsWidth; |
| 247 | h->cupsInteger[CUPS_RASTER_PWG_ImageBoxBottom] = h->cupsHeight; |
| 248 | |
| 249 | /* |
| 250 | * Colorspace and bytes per line... |
| 251 | */ |
| 252 | |
| 253 | if (!strcmp(type, "adobe-rgb_8")) |
| 254 | { |
| 255 | h->cupsBitsPerColor = 8; |
| 256 | h->cupsBitsPerPixel = 24; |
| 257 | h->cupsColorSpace = CUPS_CSPACE_ADOBERGB; |
| 258 | } |
| 259 | else if (!strcmp(type, "adobe-rgb_16")) |
| 260 | { |
| 261 | h->cupsBitsPerColor = 16; |
| 262 | h->cupsBitsPerPixel = 48; |
| 263 | h->cupsColorSpace = CUPS_CSPACE_ADOBERGB; |
| 264 | } |
| 265 | else if (!strcmp(type, "black_1")) |
| 266 | { |
| 267 | h->cupsBitsPerColor = 1; |
| 268 | h->cupsBitsPerPixel = 1; |
| 269 | h->cupsColorSpace = CUPS_CSPACE_K; |
| 270 | } |
| 271 | else if (!strcmp(type, "black_8")) |
| 272 | { |
| 273 | h->cupsBitsPerColor = 8; |
| 274 | h->cupsBitsPerPixel = 8; |
| 275 | h->cupsColorSpace = CUPS_CSPACE_K; |
| 276 | } |
| 277 | else if (!strcmp(type, "black_16")) |
| 278 | { |
| 279 | h->cupsBitsPerColor = 16; |
| 280 | h->cupsBitsPerPixel = 16; |
| 281 | h->cupsColorSpace = CUPS_CSPACE_K; |
| 282 | } |
| 283 | else if (!strcmp(type, "cmyk_8")) |
| 284 | { |
| 285 | h->cupsBitsPerColor = 8; |
| 286 | h->cupsBitsPerPixel = 32; |
| 287 | h->cupsColorSpace = CUPS_CSPACE_CMYK; |
| 288 | } |
| 289 | else if (!strcmp(type, "cmyk_16")) |
| 290 | { |
| 291 | h->cupsBitsPerColor = 16; |
| 292 | h->cupsBitsPerPixel = 64; |
| 293 | h->cupsColorSpace = CUPS_CSPACE_CMYK; |
| 294 | } |
| 295 | else if (!strncmp(type, "device", 6) && type[6] >= '1' && type[6] <= '9') |
| 296 | { |
| 297 | int ncolors, bits; /* Number of colors and bits */ |
| 298 | |
| 299 | |
| 300 | if (sscanf(type, "device%d_%d", &ncolors, &bits) != 2 || ncolors > 15 || (bits != 8 && bits != 16)) |
| 301 | { |
| 302 | _cupsRasterAddError("Unsupported raster type \'%s\'.", type); |
| 303 | return (0); |
| 304 | } |
| 305 | |
| 306 | h->cupsBitsPerColor = (unsigned)bits; |
| 307 | h->cupsBitsPerPixel = (unsigned)(ncolors * bits); |
| 308 | h->cupsColorSpace = (cups_cspace_t)(CUPS_CSPACE_DEVICE1 + ncolors - 1); |
| 309 | } |
| 310 | else if (!strcmp(type, "rgb_8")) |
| 311 | { |
| 312 | h->cupsBitsPerColor = 8; |
| 313 | h->cupsBitsPerPixel = 24; |
| 314 | h->cupsColorSpace = CUPS_CSPACE_RGB; |
| 315 | } |
| 316 | else if (!strcmp(type, "rgb_16")) |
| 317 | { |
| 318 | h->cupsBitsPerColor = 16; |
| 319 | h->cupsBitsPerPixel = 48; |
| 320 | h->cupsColorSpace = CUPS_CSPACE_RGB; |
| 321 | } |
| 322 | else if (!strcmp(type, "sgray_1")) |
| 323 | { |
| 324 | h->cupsBitsPerColor = 1; |
| 325 | h->cupsBitsPerPixel = 1; |
| 326 | h->cupsColorSpace = CUPS_CSPACE_SW; |
| 327 | } |
| 328 | else if (!strcmp(type, "sgray_8")) |
| 329 | { |
| 330 | h->cupsBitsPerColor = 8; |
| 331 | h->cupsBitsPerPixel = 8; |
| 332 | h->cupsColorSpace = CUPS_CSPACE_SW; |
| 333 | } |
| 334 | else if (!strcmp(type, "sgray_16")) |
| 335 | { |
| 336 | h->cupsBitsPerColor = 16; |
| 337 | h->cupsBitsPerPixel = 16; |
| 338 | h->cupsColorSpace = CUPS_CSPACE_SW; |
| 339 | } |
| 340 | else if (!strcmp(type, "srgb_8")) |
| 341 | { |
| 342 | h->cupsBitsPerColor = 8; |
| 343 | h->cupsBitsPerPixel = 24; |
| 344 | h->cupsColorSpace = CUPS_CSPACE_SRGB; |
| 345 | } |
| 346 | else if (!strcmp(type, "srgb_16")) |
| 347 | { |
| 348 | h->cupsBitsPerColor = 16; |
| 349 | h->cupsBitsPerPixel = 48; |
| 350 | h->cupsColorSpace = CUPS_CSPACE_SRGB; |
| 351 | } |
| 352 | else |
| 353 | { |
| 354 | _cupsRasterAddError("Unsupported raster type \'%s\'.", type); |
| 355 | return (0); |
| 356 | } |
| 357 | |
| 358 | h->cupsColorOrder = CUPS_ORDER_CHUNKED; |
| 359 | h->cupsNumColors = h->cupsBitsPerPixel / h->cupsBitsPerColor; |
| 360 | h->cupsBytesPerLine = (h->cupsWidth * h->cupsBitsPerPixel + 7) / 8; |
| 361 | |
| 362 | /* |
| 363 | * Duplex support... |
| 364 | */ |
| 365 | |
| 366 | h->cupsInteger[CUPS_RASTER_PWG_CrossFeedTransform] = 1; |
| 367 | h->cupsInteger[CUPS_RASTER_PWG_FeedTransform] = 1; |
| 368 | |
| 369 | if (sides) |
| 370 | { |
| 371 | if (!strcmp(sides, "two-sided-long-edge")) |
| 372 | { |
| 373 | h->Duplex = 1; |
| 374 | } |
| 375 | else if (!strcmp(sides, "two-sided-short-edge")) |
| 376 | { |
| 377 | h->Duplex = 1; |
| 378 | h->Tumble = 1; |
| 379 | } |
| 380 | else if (strcmp(sides, "one-sided")) |
| 381 | { |
| 382 | _cupsRasterAddError("Unsupported sides value \'%s\'.", sides); |
| 383 | return (0); |
| 384 | } |
| 385 | |
| 386 | if (sheet_back) |
| 387 | { |
| 388 | if (!strcmp(sheet_back, "flipped")) |
| 389 | { |
| 390 | if (h->Tumble) |
| 391 | h->cupsInteger[CUPS_RASTER_PWG_CrossFeedTransform] = 0xffffffffU; |
| 392 | else |
| 393 | h->cupsInteger[CUPS_RASTER_PWG_FeedTransform] = 0xffffffffU; |
| 394 | } |
| 395 | else if (!strcmp(sheet_back, "manual-tumble")) |
| 396 | { |
| 397 | if (h->Tumble) |
| 398 | { |
| 399 | h->cupsInteger[CUPS_RASTER_PWG_CrossFeedTransform] = 0xffffffffU; |
| 400 | h->cupsInteger[CUPS_RASTER_PWG_FeedTransform] = 0xffffffffU; |
| 401 | } |
| 402 | } |
| 403 | else if (!strcmp(sheet_back, "rotated")) |
| 404 | { |
| 405 | if (!h->Tumble) |
| 406 | { |
| 407 | h->cupsInteger[CUPS_RASTER_PWG_CrossFeedTransform] = 0xffffffffU; |
| 408 | h->cupsInteger[CUPS_RASTER_PWG_FeedTransform] = 0xffffffffU; |
| 409 | } |
| 410 | } |
| 411 | else if (strcmp(sheet_back, "normal")) |
| 412 | { |
| 413 | _cupsRasterAddError("Unsupported sheet_back value \'%s\'.", sheet_back); |
| 414 | return (0); |
| 415 | } |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | return (1); |
| 420 | } |
| 421 | |
| 422 | |
| 423 | /* |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 424 | * '_cupsRasterNew()' - Create a raster stream using a callback function. |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 425 | * |
| 426 | * This function associates a raster stream with the given callback function and |
| 427 | * context pointer. |
| 428 | * |
| 429 | * When writing raster data, the @code CUPS_RASTER_WRITE@, |
| 430 | * @code CUPS_RASTER_WRITE_COMPRESS@, or @code CUPS_RASTER_WRITE_PWG@ mode can |
| 431 | * be used - compressed and PWG output is generally 25-50% smaller but adds a |
| 432 | * 100-300% execution time overhead. |
| 433 | */ |
| 434 | |
| 435 | cups_raster_t * /* O - New stream */ |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 436 | _cupsRasterNew( |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 437 | cups_raster_iocb_t iocb, /* I - Read/write callback */ |
| 438 | void *ctx, /* I - Context pointer for callback */ |
| 439 | cups_mode_t mode) /* I - Mode - @code CUPS_RASTER_READ@, |
| 440 | @code CUPS_RASTER_WRITE@, |
| 441 | @code CUPS_RASTER_WRITE_COMPRESSED@, |
| 442 | or @code CUPS_RASTER_WRITE_PWG@ */ |
| 443 | { |
| 444 | cups_raster_t *r; /* New stream */ |
| 445 | |
| 446 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 447 | DEBUG_printf(("_cupsRasterOpenIO(iocb=%p, ctx=%p, mode=%s)", (void *)iocb, ctx, cups_modes[mode])); |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 448 | |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 449 | _cupsRasterClearError(); |
| 450 | |
| 451 | if ((r = calloc(sizeof(cups_raster_t), 1)) == NULL) |
| 452 | { |
| 453 | _cupsRasterAddError("Unable to allocate memory for raster stream: %s\n", |
| 454 | strerror(errno)); |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 455 | DEBUG_puts("1_cupsRasterOpenIO: Returning NULL."); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 456 | return (NULL); |
| 457 | } |
| 458 | |
| 459 | r->ctx = ctx; |
| 460 | r->iocb = iocb; |
| 461 | r->mode = mode; |
| 462 | |
| 463 | if (mode == CUPS_RASTER_READ) |
| 464 | { |
| 465 | /* |
| 466 | * Open for read - get sync word... |
| 467 | */ |
| 468 | |
| 469 | if (cups_raster_io(r, (unsigned char *)&(r->sync), sizeof(r->sync)) != |
| 470 | sizeof(r->sync)) |
| 471 | { |
| 472 | _cupsRasterAddError("Unable to read header from raster stream: %s\n", |
| 473 | strerror(errno)); |
| 474 | free(r); |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 475 | DEBUG_puts("1_cupsRasterOpenIO: Unable to read header, returning NULL."); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 476 | return (NULL); |
| 477 | } |
| 478 | |
| 479 | if (r->sync != CUPS_RASTER_SYNC && |
| 480 | r->sync != CUPS_RASTER_REVSYNC && |
| 481 | r->sync != CUPS_RASTER_SYNCv1 && |
| 482 | r->sync != CUPS_RASTER_REVSYNCv1 && |
| 483 | r->sync != CUPS_RASTER_SYNCv2 && |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 484 | r->sync != CUPS_RASTER_REVSYNCv2 && |
| 485 | r->sync != CUPS_RASTER_SYNCapple && |
| 486 | r->sync != CUPS_RASTER_REVSYNCapple) |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 487 | { |
| 488 | _cupsRasterAddError("Unknown raster format %08x!\n", r->sync); |
| 489 | free(r); |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 490 | DEBUG_puts("1_cupsRasterOpenIO: Unknown format, returning NULL."); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 491 | return (NULL); |
| 492 | } |
| 493 | |
| 494 | if (r->sync == CUPS_RASTER_SYNCv2 || |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 495 | r->sync == CUPS_RASTER_REVSYNCv2 || |
| 496 | r->sync == CUPS_RASTER_SYNCapple || |
| 497 | r->sync == CUPS_RASTER_REVSYNCapple) |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 498 | r->compressed = 1; |
| 499 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 500 | DEBUG_printf(("1_cupsRasterOpenIO: sync=%08x", r->sync)); |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 501 | |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 502 | if (r->sync == CUPS_RASTER_REVSYNC || |
| 503 | r->sync == CUPS_RASTER_REVSYNCv1 || |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 504 | r->sync == CUPS_RASTER_REVSYNCv2 || |
| 505 | r->sync == CUPS_RASTER_REVSYNCapple) |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 506 | r->swapped = 1; |
| 507 | |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 508 | if (r->sync == CUPS_RASTER_SYNCapple || |
| 509 | r->sync == CUPS_RASTER_REVSYNCapple) |
| 510 | { |
| 511 | unsigned char header[8]; /* File header */ |
| 512 | |
| 513 | if (cups_raster_io(r, (unsigned char *)header, sizeof(header)) != |
| 514 | sizeof(header)) |
| 515 | { |
| 516 | _cupsRasterAddError("Unable to read header from raster stream: %s\n", |
| 517 | strerror(errno)); |
| 518 | free(r); |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 519 | DEBUG_puts("1_cupsRasterOpenIO: Unable to read header, returning NULL."); |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 520 | return (NULL); |
| 521 | } |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 522 | } |
| 523 | |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 524 | #ifdef DEBUG |
| 525 | r->iostart = r->iocount; |
| 526 | #endif /* DEBUG */ |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 527 | } |
| 528 | else |
| 529 | { |
| 530 | /* |
| 531 | * Open for write - put sync word... |
| 532 | */ |
| 533 | |
| 534 | switch (mode) |
| 535 | { |
| 536 | default : |
| 537 | case CUPS_RASTER_WRITE : |
| 538 | r->sync = CUPS_RASTER_SYNC; |
| 539 | break; |
| 540 | |
| 541 | case CUPS_RASTER_WRITE_COMPRESSED : |
| 542 | r->compressed = 1; |
| 543 | r->sync = CUPS_RASTER_SYNCv2; |
| 544 | break; |
| 545 | |
| 546 | case CUPS_RASTER_WRITE_PWG : |
| 547 | r->compressed = 1; |
| 548 | r->sync = htonl(CUPS_RASTER_SYNC_PWG); |
| 549 | r->swapped = r->sync != CUPS_RASTER_SYNC_PWG; |
| 550 | break; |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 551 | |
| 552 | case CUPS_RASTER_WRITE_APPLE : |
| 553 | r->compressed = 1; |
| 554 | r->sync = htonl(CUPS_RASTER_SYNCapple); |
| 555 | r->swapped = r->sync != CUPS_RASTER_SYNCapple; |
| 556 | r->apple_page_count = 0xffffffffU; |
| 557 | break; |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 558 | } |
| 559 | |
| 560 | if (cups_raster_io(r, (unsigned char *)&(r->sync), sizeof(r->sync)) < (ssize_t)sizeof(r->sync)) |
| 561 | { |
| 562 | _cupsRasterAddError("Unable to write raster stream header: %s\n", |
| 563 | strerror(errno)); |
| 564 | free(r); |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 565 | DEBUG_puts("1_cupsRasterOpenIO: Unable to write header, returning NULL."); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 566 | return (NULL); |
| 567 | } |
| 568 | } |
| 569 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 570 | DEBUG_printf(("1_cupsRasterOpenIO: compressed=%d, swapped=%d, returning %p", r->compressed, r->swapped, (void *)r)); |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 571 | |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 572 | return (r); |
| 573 | } |
| 574 | |
| 575 | |
| 576 | /* |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 577 | * '_cupsRasterReadHeader()' - Read a raster page header. |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 578 | */ |
| 579 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 580 | unsigned /* O - 1 on success, 0 on fail */ |
| 581 | _cupsRasterReadHeader( |
| 582 | cups_raster_t *r) /* I - Raster stream */ |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 583 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 584 | size_t len; /* Length for read/swap */ |
| 585 | |
| 586 | |
| 587 | DEBUG_printf(("3_cupsRasterReadHeader(r=%p), r->mode=%s", (void *)r, r ? cups_modes[r->mode] : "")); |
| 588 | |
| 589 | if (r == NULL || r->mode != CUPS_RASTER_READ) |
| 590 | return (0); |
| 591 | |
| 592 | DEBUG_printf(("4_cupsRasterReadHeader: r->iocount=" CUPS_LLFMT, CUPS_LLCAST r->iocount)); |
| 593 | |
| 594 | memset(&(r->header), 0, sizeof(r->header)); |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 595 | |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 596 | /* |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 597 | * Read the header... |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 598 | */ |
| 599 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 600 | switch (r->sync) |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 601 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 602 | default : |
| 603 | /* |
| 604 | * Get the length of the raster header... |
| 605 | */ |
| 606 | |
| 607 | if (r->sync == CUPS_RASTER_SYNCv1 || r->sync == CUPS_RASTER_REVSYNCv1) |
| 608 | len = sizeof(cups_page_header_t); |
| 609 | else |
| 610 | len = sizeof(cups_page_header2_t); |
| 611 | |
| 612 | DEBUG_printf(("4_cupsRasterReadHeader: len=%d", (int)len)); |
| 613 | |
| 614 | /* |
| 615 | * Read it... |
| 616 | */ |
| 617 | |
| 618 | if (cups_raster_read(r, (unsigned char *)&(r->header), len) < (ssize_t)len) |
| 619 | { |
| 620 | DEBUG_printf(("4_cupsRasterReadHeader: EOF, r->iocount=" CUPS_LLFMT, CUPS_LLCAST r->iocount)); |
| 621 | return (0); |
| 622 | } |
| 623 | |
| 624 | /* |
| 625 | * Swap bytes as needed... |
| 626 | */ |
| 627 | |
| 628 | if (r->swapped) |
| 629 | { |
| 630 | unsigned *s, /* Current word */ |
| 631 | temp; /* Temporary copy */ |
| 632 | |
| 633 | |
| 634 | DEBUG_puts("4_cupsRasterReadHeader: Swapping header bytes."); |
| 635 | |
| 636 | for (len = 81, s = &(r->header.AdvanceDistance); |
| 637 | len > 0; |
| 638 | len --, s ++) |
| 639 | { |
| 640 | temp = *s; |
| 641 | *s = ((temp & 0xff) << 24) | |
| 642 | ((temp & 0xff00) << 8) | |
| 643 | ((temp & 0xff0000) >> 8) | |
| 644 | ((temp & 0xff000000) >> 24); |
| 645 | |
| 646 | DEBUG_printf(("4_cupsRasterReadHeader: %08x => %08x", temp, *s)); |
| 647 | } |
| 648 | } |
| 649 | break; |
| 650 | |
| 651 | case CUPS_RASTER_SYNCapple : |
| 652 | case CUPS_RASTER_REVSYNCapple : |
| 653 | { |
| 654 | unsigned char appleheader[32]; /* Raw header */ |
| 655 | static const unsigned rawcspace[] = |
| 656 | { |
| 657 | CUPS_CSPACE_SW, |
| 658 | CUPS_CSPACE_SRGB, |
| 659 | CUPS_CSPACE_CIELab, |
| 660 | CUPS_CSPACE_ADOBERGB, |
| 661 | CUPS_CSPACE_W, |
| 662 | CUPS_CSPACE_RGB, |
| 663 | CUPS_CSPACE_CMYK |
| 664 | }; |
| 665 | static const unsigned rawnumcolors[] = |
| 666 | { |
| 667 | 1, |
| 668 | 3, |
| 669 | 3, |
| 670 | 3, |
| 671 | 1, |
| 672 | 3, |
| 673 | 4 |
| 674 | }; |
| 675 | |
| 676 | if (cups_raster_read(r, appleheader, sizeof(appleheader)) < (ssize_t)sizeof(appleheader)) |
| 677 | { |
| 678 | DEBUG_printf(("4_cupsRasterReadHeader: EOF, r->iocount=" CUPS_LLFMT, CUPS_LLCAST r->iocount)); |
| 679 | return (0); |
| 680 | } |
| 681 | |
| 682 | strlcpy(r->header.MediaClass, "PwgRaster", sizeof(r->header.MediaClass)); |
| 683 | /* PwgRaster */ |
| 684 | r->header.cupsBitsPerPixel = appleheader[0]; |
| 685 | r->header.cupsColorSpace = appleheader[1] >= (sizeof(rawcspace) / sizeof(rawcspace[0])) ? CUPS_CSPACE_DEVICE1 : rawcspace[appleheader[1]]; |
| 686 | r->header.cupsNumColors = appleheader[1] >= (sizeof(rawnumcolors) / sizeof(rawnumcolors[0])) ? 1 : rawnumcolors[appleheader[1]]; |
| 687 | r->header.cupsBitsPerColor = r->header.cupsBitsPerPixel / r->header.cupsNumColors; |
| 688 | r->header.cupsWidth = ((((((unsigned)appleheader[12] << 8) | (unsigned)appleheader[13]) << 8) | (unsigned)appleheader[14]) << 8) | (unsigned)appleheader[15]; |
| 689 | r->header.cupsHeight = ((((((unsigned)appleheader[16] << 8) | (unsigned)appleheader[17]) << 8) | (unsigned)appleheader[18]) << 8) | (unsigned)appleheader[19]; |
| 690 | r->header.cupsBytesPerLine = r->header.cupsWidth * r->header.cupsBitsPerPixel / 8; |
| 691 | r->header.cupsColorOrder = CUPS_ORDER_CHUNKED; |
| 692 | r->header.HWResolution[0] = r->header.HWResolution[1] = ((((((unsigned)appleheader[20] << 8) | (unsigned)appleheader[21]) << 8) | (unsigned)appleheader[22]) << 8) | (unsigned)appleheader[23]; |
| 693 | |
| 694 | if (r->header.HWResolution[0] > 0) |
| 695 | { |
| 696 | r->header.PageSize[0] = (unsigned)(r->header.cupsWidth * 72 / r->header.HWResolution[0]); |
| 697 | r->header.PageSize[1] = (unsigned)(r->header.cupsHeight * 72 / r->header.HWResolution[1]); |
| 698 | r->header.cupsPageSize[0] = (float)(r->header.cupsWidth * 72.0 / r->header.HWResolution[0]); |
| 699 | r->header.cupsPageSize[1] = (float)(r->header.cupsHeight * 72.0 / r->header.HWResolution[1]); |
| 700 | } |
| 701 | |
| 702 | r->header.cupsInteger[CUPS_RASTER_PWG_TotalPageCount] = r->apple_page_count; |
| 703 | r->header.cupsInteger[CUPS_RASTER_PWG_AlternatePrimary] = 0xffffff; |
| 704 | r->header.cupsInteger[CUPS_RASTER_PWG_PrintQuality] = appleheader[3]; |
| 705 | |
| 706 | if (appleheader[2] >= 2) |
| 707 | r->header.Duplex = 1; |
| 708 | if (appleheader[2] == 2) |
| 709 | r->header.Tumble = 1; |
| 710 | |
| 711 | r->header.MediaPosition = appleheader[5]; |
| 712 | |
| 713 | if (appleheader[4] < (int)(sizeof(apple_media_types) / sizeof(apple_media_types[0]))) |
| 714 | strlcpy(r->header.MediaType, apple_media_types[appleheader[4]], sizeof(r->header.MediaType)); |
| 715 | else |
| 716 | strlcpy(r->header.MediaType, "other", sizeof(r->header.MediaType)); |
| 717 | } |
| 718 | break; |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 719 | } |
| 720 | |
| 721 | /* |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 722 | * Update the header and row count... |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 723 | */ |
| 724 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 725 | if (!cups_raster_update(r)) |
| 726 | return (0); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 727 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 728 | DEBUG_printf(("4_cupsRasterReadHeader: cupsColorSpace=%s", _cupsRasterColorSpaceString(r->header.cupsColorSpace))); |
| 729 | DEBUG_printf(("4_cupsRasterReadHeader: cupsBitsPerColor=%u", r->header.cupsBitsPerColor)); |
| 730 | DEBUG_printf(("4_cupsRasterReadHeader: cupsBitsPerPixel=%u", r->header.cupsBitsPerPixel)); |
| 731 | DEBUG_printf(("4_cupsRasterReadHeader: cupsBytesPerLine=%u", r->header.cupsBytesPerLine)); |
| 732 | DEBUG_printf(("4_cupsRasterReadHeader: cupsWidth=%u", r->header.cupsWidth)); |
| 733 | DEBUG_printf(("4_cupsRasterReadHeader: cupsHeight=%u", r->header.cupsHeight)); |
| 734 | DEBUG_printf(("4_cupsRasterReadHeader: r->bpp=%d", r->bpp)); |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 735 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 736 | return (r->header.cupsBitsPerPixel > 0 && r->header.cupsBitsPerPixel <= 240 && r->header.cupsBitsPerColor > 0 && r->header.cupsBitsPerColor <= 16 && r->header.cupsBytesPerLine > 0 && r->header.cupsBytesPerLine <= 0x7fffffff && r->header.cupsHeight != 0 && (r->header.cupsBytesPerLine % r->bpp) == 0); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 737 | } |
| 738 | |
| 739 | |
| 740 | /* |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 741 | * '_cupsRasterReadPixels()' - Read raster pixels. |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 742 | * |
| 743 | * For best performance, filters should read one or more whole lines. |
| 744 | * The "cupsBytesPerLine" value from the page header can be used to allocate |
| 745 | * the line buffer and as the number of bytes to read. |
| 746 | */ |
| 747 | |
| 748 | unsigned /* O - Number of bytes read */ |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 749 | _cupsRasterReadPixels( |
| 750 | cups_raster_t *r, /* I - Raster stream */ |
| 751 | unsigned char *p, /* I - Pointer to pixel buffer */ |
| 752 | unsigned len) /* I - Number of bytes to read */ |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 753 | { |
| 754 | ssize_t bytes; /* Bytes read */ |
| 755 | unsigned cupsBytesPerLine; /* cupsBytesPerLine value */ |
| 756 | unsigned remaining; /* Bytes remaining */ |
| 757 | unsigned char *ptr, /* Pointer to read buffer */ |
| 758 | byte, /* Byte from file */ |
| 759 | *temp; /* Pointer into buffer */ |
| 760 | unsigned count; /* Repetition count */ |
| 761 | |
| 762 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 763 | DEBUG_printf(("_cupsRasterReadPixels(r=%p, p=%p, len=%u)", (void *)r, (void *)p, len)); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 764 | |
| 765 | if (r == NULL || r->mode != CUPS_RASTER_READ || r->remaining == 0 || |
| 766 | r->header.cupsBytesPerLine == 0) |
| 767 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 768 | DEBUG_puts("1_cupsRasterReadPixels: Returning 0."); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 769 | return (0); |
| 770 | } |
| 771 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 772 | DEBUG_printf(("1_cupsRasterReadPixels: compressed=%d, remaining=%u", r->compressed, r->remaining)); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 773 | |
| 774 | if (!r->compressed) |
| 775 | { |
| 776 | /* |
| 777 | * Read without compression... |
| 778 | */ |
| 779 | |
| 780 | r->remaining -= len / r->header.cupsBytesPerLine; |
| 781 | |
| 782 | if (cups_raster_io(r, p, len) < (ssize_t)len) |
| 783 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 784 | DEBUG_puts("1_cupsRasterReadPixels: Read error, returning 0."); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 785 | return (0); |
| 786 | } |
| 787 | |
| 788 | /* |
| 789 | * Swap bytes as needed... |
| 790 | */ |
| 791 | |
| 792 | if (r->swapped && |
| 793 | (r->header.cupsBitsPerColor == 16 || |
| 794 | r->header.cupsBitsPerPixel == 12 || |
| 795 | r->header.cupsBitsPerPixel == 16)) |
| 796 | cups_swap(p, len); |
| 797 | |
| 798 | /* |
| 799 | * Return... |
| 800 | */ |
| 801 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 802 | DEBUG_printf(("1_cupsRasterReadPixels: Returning %u", len)); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 803 | |
| 804 | return (len); |
| 805 | } |
| 806 | |
| 807 | /* |
| 808 | * Read compressed data... |
| 809 | */ |
| 810 | |
| 811 | remaining = len; |
| 812 | cupsBytesPerLine = r->header.cupsBytesPerLine; |
| 813 | |
| 814 | while (remaining > 0 && r->remaining > 0) |
| 815 | { |
| 816 | if (r->count == 0) |
| 817 | { |
| 818 | /* |
| 819 | * Need to read a new row... |
| 820 | */ |
| 821 | |
| 822 | if (remaining == cupsBytesPerLine) |
| 823 | ptr = p; |
| 824 | else |
| 825 | ptr = r->pixels; |
| 826 | |
| 827 | /* |
| 828 | * Read using a modified PackBits compression... |
| 829 | */ |
| 830 | |
| 831 | if (!cups_raster_read(r, &byte, 1)) |
| 832 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 833 | DEBUG_puts("1_cupsRasterReadPixels: Read error, returning 0."); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 834 | return (0); |
| 835 | } |
| 836 | |
| 837 | r->count = (unsigned)byte + 1; |
| 838 | |
| 839 | if (r->count > 1) |
| 840 | ptr = r->pixels; |
| 841 | |
| 842 | temp = ptr; |
| 843 | bytes = (ssize_t)cupsBytesPerLine; |
| 844 | |
| 845 | while (bytes > 0) |
| 846 | { |
| 847 | /* |
| 848 | * Get a new repeat count... |
| 849 | */ |
| 850 | |
| 851 | if (!cups_raster_read(r, &byte, 1)) |
| 852 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 853 | DEBUG_puts("1_cupsRasterReadPixels: Read error, returning 0."); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 854 | return (0); |
| 855 | } |
| 856 | |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 857 | if (byte == 128) |
| 858 | { |
| 859 | /* |
| 860 | * Clear to end of line... |
| 861 | */ |
| 862 | |
| 863 | switch (r->header.cupsColorSpace) |
| 864 | { |
| 865 | case CUPS_CSPACE_W : |
| 866 | case CUPS_CSPACE_RGB : |
| 867 | case CUPS_CSPACE_SW : |
| 868 | case CUPS_CSPACE_SRGB : |
| 869 | case CUPS_CSPACE_RGBW : |
| 870 | case CUPS_CSPACE_ADOBERGB : |
| 871 | memset(temp, 0xff, (size_t)bytes); |
| 872 | break; |
| 873 | default : |
| 874 | memset(temp, 0x00, (size_t)bytes); |
| 875 | break; |
| 876 | } |
| 877 | |
| 878 | temp += bytes; |
| 879 | bytes = 0; |
| 880 | } |
| 881 | else if (byte & 128) |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 882 | { |
| 883 | /* |
| 884 | * Copy N literal pixels... |
| 885 | */ |
| 886 | |
| 887 | count = (unsigned)(257 - byte) * r->bpp; |
| 888 | |
| 889 | if (count > (unsigned)bytes) |
| 890 | count = (unsigned)bytes; |
| 891 | |
| 892 | if (!cups_raster_read(r, temp, count)) |
| 893 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 894 | DEBUG_puts("1_cupsRasterReadPixels: Read error, returning 0."); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 895 | return (0); |
| 896 | } |
| 897 | |
| 898 | temp += count; |
| 899 | bytes -= (ssize_t)count; |
| 900 | } |
| 901 | else |
| 902 | { |
| 903 | /* |
| 904 | * Repeat the next N bytes... |
| 905 | */ |
| 906 | |
| 907 | count = ((unsigned)byte + 1) * r->bpp; |
| 908 | if (count > (unsigned)bytes) |
| 909 | count = (unsigned)bytes; |
| 910 | |
| 911 | if (count < r->bpp) |
| 912 | break; |
| 913 | |
| 914 | bytes -= (ssize_t)count; |
| 915 | |
| 916 | if (!cups_raster_read(r, temp, r->bpp)) |
| 917 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 918 | DEBUG_puts("1_cupsRasterReadPixels: Read error, returning 0."); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 919 | return (0); |
| 920 | } |
| 921 | |
| 922 | temp += r->bpp; |
| 923 | count -= r->bpp; |
| 924 | |
| 925 | while (count > 0) |
| 926 | { |
| 927 | memcpy(temp, temp - r->bpp, r->bpp); |
| 928 | temp += r->bpp; |
| 929 | count -= r->bpp; |
| 930 | } |
| 931 | } |
| 932 | } |
| 933 | |
| 934 | /* |
| 935 | * Swap bytes as needed... |
| 936 | */ |
| 937 | |
| 938 | if ((r->header.cupsBitsPerColor == 16 || |
| 939 | r->header.cupsBitsPerPixel == 12 || |
| 940 | r->header.cupsBitsPerPixel == 16) && |
| 941 | r->swapped) |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 942 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 943 | DEBUG_puts("1_cupsRasterReadPixels: Swapping bytes."); |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 944 | cups_swap(ptr, (size_t)cupsBytesPerLine); |
| 945 | } |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 946 | |
| 947 | /* |
| 948 | * Update pointers... |
| 949 | */ |
| 950 | |
| 951 | if (remaining >= cupsBytesPerLine) |
| 952 | { |
| 953 | bytes = (ssize_t)cupsBytesPerLine; |
| 954 | r->pcurrent = r->pixels; |
| 955 | r->count --; |
| 956 | r->remaining --; |
| 957 | } |
| 958 | else |
| 959 | { |
| 960 | bytes = (ssize_t)remaining; |
| 961 | r->pcurrent = r->pixels + bytes; |
| 962 | } |
| 963 | |
| 964 | /* |
| 965 | * Copy data as needed... |
| 966 | */ |
| 967 | |
| 968 | if (ptr != p) |
| 969 | memcpy(p, ptr, (size_t)bytes); |
| 970 | } |
| 971 | else |
| 972 | { |
| 973 | /* |
| 974 | * Copy fragment from buffer... |
| 975 | */ |
| 976 | |
| 977 | if ((unsigned)(bytes = (int)(r->pend - r->pcurrent)) > remaining) |
| 978 | bytes = (ssize_t)remaining; |
| 979 | |
| 980 | memcpy(p, r->pcurrent, (size_t)bytes); |
| 981 | r->pcurrent += bytes; |
| 982 | |
| 983 | if (r->pcurrent >= r->pend) |
| 984 | { |
| 985 | r->pcurrent = r->pixels; |
| 986 | r->count --; |
| 987 | r->remaining --; |
| 988 | } |
| 989 | } |
| 990 | |
| 991 | remaining -= (unsigned)bytes; |
| 992 | p += bytes; |
| 993 | } |
| 994 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 995 | DEBUG_printf(("1_cupsRasterReadPixels: Returning %u", len)); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 996 | |
| 997 | return (len); |
| 998 | } |
| 999 | |
| 1000 | |
| 1001 | /* |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1002 | * '_cupsRasterWriteHeader()' - Write a raster page header. |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1003 | */ |
| 1004 | |
| 1005 | unsigned /* O - 1 on success, 0 on failure */ |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1006 | _cupsRasterWriteHeader( |
| 1007 | cups_raster_t *r) /* I - Raster stream */ |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1008 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1009 | DEBUG_printf(("_cupsRasterWriteHeader(r=%p)", (void *)r)); |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1010 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1011 | DEBUG_printf(("1_cupsRasterWriteHeader: cupsColorSpace=%s", _cupsRasterColorSpaceString(r->header.cupsColorSpace))); |
| 1012 | DEBUG_printf(("1_cupsRasterWriteHeader: cupsBitsPerColor=%u", r->header.cupsBitsPerColor)); |
| 1013 | DEBUG_printf(("1_cupsRasterWriteHeader: cupsBitsPerPixel=%u", r->header.cupsBitsPerPixel)); |
| 1014 | DEBUG_printf(("1_cupsRasterWriteHeader: cupsBytesPerLine=%u", r->header.cupsBytesPerLine)); |
| 1015 | DEBUG_printf(("1_cupsRasterWriteHeader: cupsWidth=%u", r->header.cupsWidth)); |
| 1016 | DEBUG_printf(("1_cupsRasterWriteHeader: cupsHeight=%u", r->header.cupsHeight)); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1017 | |
| 1018 | /* |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1019 | * Compute the number of raster lines in the page image... |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1020 | */ |
| 1021 | |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1022 | if (!cups_raster_update(r)) |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1023 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1024 | DEBUG_puts("1_cupsRasterWriteHeader: Unable to update parameters, returning 0."); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1025 | return (0); |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1026 | } |
| 1027 | |
| 1028 | if (r->mode == CUPS_RASTER_WRITE_APPLE) |
| 1029 | { |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1030 | r->rowheight = r->header.HWResolution[0] / r->header.HWResolution[1]; |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1031 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1032 | if (r->header.HWResolution[0] != (r->rowheight * r->header.HWResolution[1])) |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1033 | return (0); |
| 1034 | } |
| 1035 | else |
| 1036 | r->rowheight = 1; |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1037 | |
| 1038 | /* |
| 1039 | * Write the raster header... |
| 1040 | */ |
| 1041 | |
| 1042 | if (r->mode == CUPS_RASTER_WRITE_PWG) |
| 1043 | { |
| 1044 | /* |
| 1045 | * PWG raster data is always network byte order with much of the page header |
| 1046 | * zeroed. |
| 1047 | */ |
| 1048 | |
| 1049 | cups_page_header2_t fh; /* File page header */ |
| 1050 | |
| 1051 | memset(&fh, 0, sizeof(fh)); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1052 | strlcpy(fh.MediaClass, "PwgRaster", sizeof(fh.MediaClass)); |
| 1053 | strlcpy(fh.MediaColor, r->header.MediaColor, sizeof(fh.MediaColor)); |
| 1054 | strlcpy(fh.MediaType, r->header.MediaType, sizeof(fh.MediaType)); |
| 1055 | strlcpy(fh.OutputType, r->header.OutputType, sizeof(fh.OutputType)); |
| 1056 | strlcpy(fh.cupsRenderingIntent, r->header.cupsRenderingIntent, |
| 1057 | sizeof(fh.cupsRenderingIntent)); |
| 1058 | strlcpy(fh.cupsPageSizeName, r->header.cupsPageSizeName, |
| 1059 | sizeof(fh.cupsPageSizeName)); |
| 1060 | |
| 1061 | fh.CutMedia = htonl(r->header.CutMedia); |
| 1062 | fh.Duplex = htonl(r->header.Duplex); |
| 1063 | fh.HWResolution[0] = htonl(r->header.HWResolution[0]); |
| 1064 | fh.HWResolution[1] = htonl(r->header.HWResolution[1]); |
| 1065 | fh.ImagingBoundingBox[0] = htonl(r->header.ImagingBoundingBox[0]); |
| 1066 | fh.ImagingBoundingBox[1] = htonl(r->header.ImagingBoundingBox[1]); |
| 1067 | fh.ImagingBoundingBox[2] = htonl(r->header.ImagingBoundingBox[2]); |
| 1068 | fh.ImagingBoundingBox[3] = htonl(r->header.ImagingBoundingBox[3]); |
| 1069 | fh.InsertSheet = htonl(r->header.InsertSheet); |
| 1070 | fh.Jog = htonl(r->header.Jog); |
| 1071 | fh.LeadingEdge = htonl(r->header.LeadingEdge); |
| 1072 | fh.ManualFeed = htonl(r->header.ManualFeed); |
| 1073 | fh.MediaPosition = htonl(r->header.MediaPosition); |
| 1074 | fh.MediaWeight = htonl(r->header.MediaWeight); |
| 1075 | fh.NumCopies = htonl(r->header.NumCopies); |
| 1076 | fh.Orientation = htonl(r->header.Orientation); |
| 1077 | fh.PageSize[0] = htonl(r->header.PageSize[0]); |
| 1078 | fh.PageSize[1] = htonl(r->header.PageSize[1]); |
| 1079 | fh.Tumble = htonl(r->header.Tumble); |
| 1080 | fh.cupsWidth = htonl(r->header.cupsWidth); |
| 1081 | fh.cupsHeight = htonl(r->header.cupsHeight); |
| 1082 | fh.cupsBitsPerColor = htonl(r->header.cupsBitsPerColor); |
| 1083 | fh.cupsBitsPerPixel = htonl(r->header.cupsBitsPerPixel); |
| 1084 | fh.cupsBytesPerLine = htonl(r->header.cupsBytesPerLine); |
| 1085 | fh.cupsColorOrder = htonl(r->header.cupsColorOrder); |
| 1086 | fh.cupsColorSpace = htonl(r->header.cupsColorSpace); |
| 1087 | fh.cupsNumColors = htonl(r->header.cupsNumColors); |
| 1088 | fh.cupsInteger[0] = htonl(r->header.cupsInteger[0]); |
| 1089 | fh.cupsInteger[1] = htonl(r->header.cupsInteger[1]); |
| 1090 | fh.cupsInteger[2] = htonl(r->header.cupsInteger[2]); |
| 1091 | fh.cupsInteger[3] = htonl((unsigned)(r->header.cupsImagingBBox[0] * r->header.HWResolution[0] / 72.0)); |
| 1092 | fh.cupsInteger[4] = htonl((unsigned)(r->header.cupsImagingBBox[1] * r->header.HWResolution[1] / 72.0)); |
| 1093 | fh.cupsInteger[5] = htonl((unsigned)(r->header.cupsImagingBBox[2] * r->header.HWResolution[0] / 72.0)); |
| 1094 | fh.cupsInteger[6] = htonl((unsigned)(r->header.cupsImagingBBox[3] * r->header.HWResolution[1] / 72.0)); |
| 1095 | fh.cupsInteger[7] = htonl(0xffffff); |
| 1096 | |
| 1097 | return (cups_raster_io(r, (unsigned char *)&fh, sizeof(fh)) == sizeof(fh)); |
| 1098 | } |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 1099 | else if (r->mode == CUPS_RASTER_WRITE_APPLE) |
| 1100 | { |
| 1101 | /* |
| 1102 | * Raw raster data is always network byte order with most of the page header |
| 1103 | * zeroed. |
| 1104 | */ |
| 1105 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1106 | int i; /* Looping var */ |
| 1107 | unsigned char appleheader[32];/* Raw page header */ |
| 1108 | unsigned height = r->header.cupsHeight * r->rowheight; |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 1109 | /* Computed page height */ |
| 1110 | |
| 1111 | if (r->apple_page_count == 0xffffffffU) |
| 1112 | { |
| 1113 | /* |
| 1114 | * Write raw page count from raster page header... |
| 1115 | */ |
| 1116 | |
| 1117 | r->apple_page_count = r->header.cupsInteger[0]; |
| 1118 | |
| 1119 | appleheader[0] = 'A'; |
| 1120 | appleheader[1] = 'S'; |
| 1121 | appleheader[2] = 'T'; |
| 1122 | appleheader[3] = 0; |
| 1123 | appleheader[4] = (unsigned char)(r->apple_page_count >> 24); |
| 1124 | appleheader[5] = (unsigned char)(r->apple_page_count >> 16); |
| 1125 | appleheader[6] = (unsigned char)(r->apple_page_count >> 8); |
| 1126 | appleheader[7] = (unsigned char)(r->apple_page_count); |
| 1127 | |
| 1128 | if (cups_raster_io(r, appleheader, 8) != 8) |
| 1129 | return (0); |
| 1130 | } |
| 1131 | |
| 1132 | memset(appleheader, 0, sizeof(appleheader)); |
| 1133 | |
| 1134 | appleheader[0] = (unsigned char)r->header.cupsBitsPerPixel; |
| 1135 | appleheader[1] = r->header.cupsColorSpace == CUPS_CSPACE_SRGB ? 1 : |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1136 | r->header.cupsColorSpace == CUPS_CSPACE_CIELab ? 2 : |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 1137 | r->header.cupsColorSpace == CUPS_CSPACE_ADOBERGB ? 3 : |
| 1138 | r->header.cupsColorSpace == CUPS_CSPACE_W ? 4 : |
| 1139 | r->header.cupsColorSpace == CUPS_CSPACE_RGB ? 5 : |
| 1140 | r->header.cupsColorSpace == CUPS_CSPACE_CMYK ? 6 : 0; |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1141 | appleheader[2] = r->header.Duplex ? (r->header.Tumble ? 2 : 3) : 1; |
| 1142 | appleheader[3] = (unsigned char)(r->header.cupsInteger[CUPS_RASTER_PWG_PrintQuality]); |
| 1143 | appleheader[5] = (unsigned char)(r->header.MediaPosition); |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 1144 | appleheader[12] = (unsigned char)(r->header.cupsWidth >> 24); |
| 1145 | appleheader[13] = (unsigned char)(r->header.cupsWidth >> 16); |
| 1146 | appleheader[14] = (unsigned char)(r->header.cupsWidth >> 8); |
| 1147 | appleheader[15] = (unsigned char)(r->header.cupsWidth); |
| 1148 | appleheader[16] = (unsigned char)(height >> 24); |
| 1149 | appleheader[17] = (unsigned char)(height >> 16); |
| 1150 | appleheader[18] = (unsigned char)(height >> 8); |
| 1151 | appleheader[19] = (unsigned char)(height); |
| 1152 | appleheader[20] = (unsigned char)(r->header.HWResolution[0] >> 24); |
| 1153 | appleheader[21] = (unsigned char)(r->header.HWResolution[0] >> 16); |
| 1154 | appleheader[22] = (unsigned char)(r->header.HWResolution[0] >> 8); |
| 1155 | appleheader[23] = (unsigned char)(r->header.HWResolution[0]); |
| 1156 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1157 | for (i = 0; i < (int)(sizeof(apple_media_types) / sizeof(apple_media_types[0])); i ++) |
| 1158 | { |
| 1159 | if (!strcmp(r->header.MediaType, apple_media_types[i])) |
| 1160 | { |
| 1161 | appleheader[4] = (unsigned char)i; |
| 1162 | break; |
| 1163 | } |
| 1164 | } |
| 1165 | |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 1166 | return (cups_raster_io(r, appleheader, sizeof(appleheader)) == sizeof(appleheader)); |
| 1167 | } |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1168 | else |
| 1169 | return (cups_raster_io(r, (unsigned char *)&(r->header), sizeof(r->header)) |
| 1170 | == sizeof(r->header)); |
| 1171 | } |
| 1172 | |
| 1173 | |
| 1174 | /* |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1175 | * '_cupsRasterWritePixels()' - Write raster pixels. |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1176 | * |
| 1177 | * For best performance, filters should write one or more whole lines. |
| 1178 | * The "cupsBytesPerLine" value from the page header can be used to allocate |
| 1179 | * the line buffer and as the number of bytes to write. |
| 1180 | */ |
| 1181 | |
| 1182 | unsigned /* O - Number of bytes written */ |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1183 | _cupsRasterWritePixels( |
| 1184 | cups_raster_t *r, /* I - Raster stream */ |
| 1185 | unsigned char *p, /* I - Bytes to write */ |
| 1186 | unsigned len) /* I - Number of bytes to write */ |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1187 | { |
| 1188 | ssize_t bytes; /* Bytes read */ |
| 1189 | unsigned remaining; /* Bytes remaining */ |
| 1190 | |
| 1191 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1192 | DEBUG_printf(("_cupsRasterWritePixels(r=%p, p=%p, len=%u), remaining=%u", (void *)r, (void *)p, len, r->remaining)); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1193 | |
| 1194 | if (r == NULL || r->mode == CUPS_RASTER_READ || r->remaining == 0) |
| 1195 | return (0); |
| 1196 | |
| 1197 | if (!r->compressed) |
| 1198 | { |
| 1199 | /* |
| 1200 | * Without compression, just write the raster data raw unless the data needs |
| 1201 | * to be swapped... |
| 1202 | */ |
| 1203 | |
| 1204 | r->remaining -= len / r->header.cupsBytesPerLine; |
| 1205 | |
| 1206 | if (r->swapped && |
| 1207 | (r->header.cupsBitsPerColor == 16 || |
| 1208 | r->header.cupsBitsPerPixel == 12 || |
| 1209 | r->header.cupsBitsPerPixel == 16)) |
| 1210 | { |
| 1211 | unsigned char *bufptr; /* Pointer into write buffer */ |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1212 | |
| 1213 | /* |
| 1214 | * Allocate a write buffer as needed... |
| 1215 | */ |
| 1216 | |
| 1217 | if ((size_t)len > r->bufsize) |
| 1218 | { |
| 1219 | if (r->buffer) |
| 1220 | bufptr = realloc(r->buffer, len); |
| 1221 | else |
| 1222 | bufptr = malloc(len); |
| 1223 | |
| 1224 | if (!bufptr) |
| 1225 | return (0); |
| 1226 | |
| 1227 | r->buffer = bufptr; |
| 1228 | r->bufsize = len; |
| 1229 | } |
| 1230 | |
| 1231 | /* |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1232 | * Byte swap the pixels and write them... |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1233 | */ |
| 1234 | |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1235 | cups_swap_copy(r->buffer, p, len); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1236 | |
| 1237 | bytes = cups_raster_io(r, r->buffer, len); |
| 1238 | } |
| 1239 | else |
| 1240 | bytes = cups_raster_io(r, p, len); |
| 1241 | |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1242 | if (bytes < (ssize_t)len) |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1243 | return (0); |
| 1244 | else |
| 1245 | return (len); |
| 1246 | } |
| 1247 | |
| 1248 | /* |
| 1249 | * Otherwise, compress each line... |
| 1250 | */ |
| 1251 | |
| 1252 | for (remaining = len; remaining > 0; remaining -= (unsigned)bytes, p += bytes) |
| 1253 | { |
| 1254 | /* |
| 1255 | * Figure out the number of remaining bytes on the current line... |
| 1256 | */ |
| 1257 | |
| 1258 | if ((bytes = (ssize_t)remaining) > (ssize_t)(r->pend - r->pcurrent)) |
| 1259 | bytes = (ssize_t)(r->pend - r->pcurrent); |
| 1260 | |
| 1261 | if (r->count > 0) |
| 1262 | { |
| 1263 | /* |
| 1264 | * Check to see if this line is the same as the previous line... |
| 1265 | */ |
| 1266 | |
| 1267 | if (memcmp(p, r->pcurrent, (size_t)bytes)) |
| 1268 | { |
| 1269 | if (cups_raster_write(r, r->pixels) <= 0) |
| 1270 | return (0); |
| 1271 | |
| 1272 | r->count = 0; |
| 1273 | } |
| 1274 | else |
| 1275 | { |
| 1276 | /* |
| 1277 | * Mark more bytes as the same... |
| 1278 | */ |
| 1279 | |
| 1280 | r->pcurrent += bytes; |
| 1281 | |
| 1282 | if (r->pcurrent >= r->pend) |
| 1283 | { |
| 1284 | /* |
| 1285 | * Increase the repeat count... |
| 1286 | */ |
| 1287 | |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 1288 | r->count += r->rowheight; |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1289 | r->pcurrent = r->pixels; |
| 1290 | |
| 1291 | /* |
| 1292 | * Flush out this line if it is the last one... |
| 1293 | */ |
| 1294 | |
| 1295 | r->remaining --; |
| 1296 | |
| 1297 | if (r->remaining == 0) |
| 1298 | { |
| 1299 | if (cups_raster_write(r, r->pixels) <= 0) |
| 1300 | return (0); |
| 1301 | else |
| 1302 | return (len); |
| 1303 | } |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 1304 | else if (r->count > (256 - r->rowheight)) |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1305 | { |
| 1306 | if (cups_raster_write(r, r->pixels) <= 0) |
| 1307 | return (0); |
| 1308 | |
| 1309 | r->count = 0; |
| 1310 | } |
| 1311 | } |
| 1312 | |
| 1313 | continue; |
| 1314 | } |
| 1315 | } |
| 1316 | |
| 1317 | if (r->count == 0) |
| 1318 | { |
| 1319 | /* |
| 1320 | * Copy the raster data to the buffer... |
| 1321 | */ |
| 1322 | |
| 1323 | memcpy(r->pcurrent, p, (size_t)bytes); |
| 1324 | |
| 1325 | r->pcurrent += bytes; |
| 1326 | |
| 1327 | if (r->pcurrent >= r->pend) |
| 1328 | { |
| 1329 | /* |
| 1330 | * Increase the repeat count... |
| 1331 | */ |
| 1332 | |
Philip P. Moltmann | 2447373 | 2017-05-11 09:37:47 -0700 | [diff] [blame] | 1333 | r->count += r->rowheight; |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1334 | r->pcurrent = r->pixels; |
| 1335 | |
| 1336 | /* |
| 1337 | * Flush out this line if it is the last one... |
| 1338 | */ |
| 1339 | |
| 1340 | r->remaining --; |
| 1341 | |
| 1342 | if (r->remaining == 0) |
| 1343 | { |
| 1344 | if (cups_raster_write(r, r->pixels) <= 0) |
| 1345 | return (0); |
| 1346 | } |
| 1347 | } |
| 1348 | } |
| 1349 | } |
| 1350 | |
| 1351 | return (len); |
| 1352 | } |
| 1353 | |
| 1354 | |
| 1355 | /* |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1356 | * 'cups_raster_io()' - Read/write bytes from a context, handling interruptions. |
| 1357 | */ |
| 1358 | |
| 1359 | static ssize_t /* O - Bytes read/write or -1 */ |
| 1360 | cups_raster_io(cups_raster_t *r, /* I - Raster stream */ |
| 1361 | unsigned char *buf, /* I - Buffer for read/write */ |
| 1362 | size_t bytes) /* I - Number of bytes to read/write */ |
| 1363 | { |
| 1364 | ssize_t count, /* Number of bytes read/written */ |
| 1365 | total; /* Total bytes read/written */ |
| 1366 | |
| 1367 | |
| 1368 | DEBUG_printf(("5cups_raster_io(r=%p, buf=%p, bytes=" CUPS_LLFMT ")", (void *)r, (void *)buf, CUPS_LLCAST bytes)); |
| 1369 | |
| 1370 | for (total = 0; total < (ssize_t)bytes; total += count, buf += count) |
| 1371 | { |
| 1372 | count = (*r->iocb)(r->ctx, buf, bytes - (size_t)total); |
| 1373 | |
| 1374 | DEBUG_printf(("6cups_raster_io: count=%d, total=%d", (int)count, (int)total)); |
| 1375 | if (count == 0) |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1376 | break; |
Haibo Huang | 4c28362 | 2019-12-13 16:47:52 -0800 | [diff] [blame^] | 1377 | // { |
| 1378 | // DEBUG_puts("6cups_raster_io: Returning 0."); |
| 1379 | // return (0); |
| 1380 | // } |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1381 | else if (count < 0) |
| 1382 | { |
| 1383 | DEBUG_puts("6cups_raster_io: Returning -1 on error."); |
| 1384 | return (-1); |
| 1385 | } |
| 1386 | |
| 1387 | #ifdef DEBUG |
| 1388 | r->iocount += (size_t)count; |
| 1389 | #endif /* DEBUG */ |
| 1390 | } |
| 1391 | |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1392 | DEBUG_printf(("6cups_raster_io: iocount=" CUPS_LLFMT, CUPS_LLCAST r->iocount)); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1393 | DEBUG_printf(("6cups_raster_io: Returning " CUPS_LLFMT ".", CUPS_LLCAST total)); |
| 1394 | |
| 1395 | return (total); |
| 1396 | } |
| 1397 | |
| 1398 | |
| 1399 | /* |
| 1400 | * 'cups_raster_read()' - Read through the raster buffer. |
| 1401 | */ |
| 1402 | |
| 1403 | static ssize_t /* O - Number of bytes read */ |
| 1404 | cups_raster_read(cups_raster_t *r, /* I - Raster stream */ |
| 1405 | unsigned char *buf, /* I - Buffer */ |
| 1406 | size_t bytes) /* I - Number of bytes to read */ |
| 1407 | { |
| 1408 | ssize_t count, /* Number of bytes read */ |
| 1409 | remaining, /* Remaining bytes in buffer */ |
| 1410 | total; /* Total bytes read */ |
| 1411 | |
| 1412 | |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1413 | DEBUG_printf(("4cups_raster_read(r=%p, buf=%p, bytes=" CUPS_LLFMT "), offset=" CUPS_LLFMT, (void *)r, (void *)buf, CUPS_LLCAST bytes, CUPS_LLCAST (r->iostart + r->bufptr - r->buffer))); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1414 | |
| 1415 | if (!r->compressed) |
| 1416 | return (cups_raster_io(r, buf, bytes)); |
| 1417 | |
| 1418 | /* |
| 1419 | * Allocate a read buffer as needed... |
| 1420 | */ |
| 1421 | |
| 1422 | count = (ssize_t)(2 * r->header.cupsBytesPerLine); |
| 1423 | if (count < 65536) |
| 1424 | count = 65536; |
| 1425 | |
| 1426 | if ((size_t)count > r->bufsize) |
| 1427 | { |
| 1428 | ssize_t offset = r->bufptr - r->buffer; |
| 1429 | /* Offset to current start of buffer */ |
| 1430 | ssize_t end = r->bufend - r->buffer;/* Offset to current end of buffer */ |
| 1431 | unsigned char *rptr; /* Pointer in read buffer */ |
| 1432 | |
| 1433 | if (r->buffer) |
| 1434 | rptr = realloc(r->buffer, (size_t)count); |
| 1435 | else |
| 1436 | rptr = malloc((size_t)count); |
| 1437 | |
| 1438 | if (!rptr) |
| 1439 | return (0); |
| 1440 | |
| 1441 | r->buffer = rptr; |
| 1442 | r->bufptr = rptr + offset; |
| 1443 | r->bufend = rptr + end; |
| 1444 | r->bufsize = (size_t)count; |
| 1445 | } |
| 1446 | |
| 1447 | /* |
| 1448 | * Loop until we have read everything... |
| 1449 | */ |
| 1450 | |
| 1451 | for (total = 0, remaining = (int)(r->bufend - r->bufptr); |
| 1452 | total < (ssize_t)bytes; |
| 1453 | total += count, buf += count) |
| 1454 | { |
| 1455 | count = (ssize_t)bytes - total; |
| 1456 | |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1457 | DEBUG_printf(("5cups_raster_read: count=" CUPS_LLFMT ", remaining=" CUPS_LLFMT ", buf=%p, bufptr=%p, bufend=%p", CUPS_LLCAST count, CUPS_LLCAST remaining, (void *)buf, (void *)r->bufptr, (void *)r->bufend)); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1458 | |
| 1459 | if (remaining == 0) |
| 1460 | { |
| 1461 | if (count < 16) |
| 1462 | { |
| 1463 | /* |
| 1464 | * Read into the raster buffer and then copy... |
| 1465 | */ |
| 1466 | |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1467 | #ifdef DEBUG |
| 1468 | r->iostart += (size_t)(r->bufend - r->buffer); |
| 1469 | #endif /* DEBUG */ |
| 1470 | |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1471 | remaining = (*r->iocb)(r->ctx, r->buffer, r->bufsize); |
| 1472 | if (remaining <= 0) |
| 1473 | return (0); |
| 1474 | |
| 1475 | r->bufptr = r->buffer; |
| 1476 | r->bufend = r->buffer + remaining; |
| 1477 | |
| 1478 | #ifdef DEBUG |
| 1479 | r->iocount += (size_t)remaining; |
| 1480 | #endif /* DEBUG */ |
| 1481 | } |
| 1482 | else |
| 1483 | { |
| 1484 | /* |
| 1485 | * Read directly into "buf"... |
| 1486 | */ |
| 1487 | |
| 1488 | count = (*r->iocb)(r->ctx, buf, (size_t)count); |
| 1489 | |
| 1490 | if (count <= 0) |
| 1491 | return (0); |
| 1492 | |
| 1493 | #ifdef DEBUG |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1494 | r->iostart += (size_t)count; |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1495 | r->iocount += (size_t)count; |
| 1496 | #endif /* DEBUG */ |
| 1497 | |
| 1498 | continue; |
| 1499 | } |
| 1500 | } |
| 1501 | |
| 1502 | /* |
| 1503 | * Copy bytes from raster buffer to "buf"... |
| 1504 | */ |
| 1505 | |
| 1506 | if (count > remaining) |
| 1507 | count = remaining; |
| 1508 | |
| 1509 | if (count == 1) |
| 1510 | { |
| 1511 | /* |
| 1512 | * Copy 1 byte... |
| 1513 | */ |
| 1514 | |
| 1515 | *buf = *(r->bufptr)++; |
| 1516 | remaining --; |
| 1517 | } |
| 1518 | else if (count < 128) |
| 1519 | { |
| 1520 | /* |
| 1521 | * Copy up to 127 bytes without using memcpy(); this is |
| 1522 | * faster because it avoids an extra function call and is |
| 1523 | * often further optimized by the compiler... |
| 1524 | */ |
| 1525 | |
| 1526 | unsigned char *bufptr; /* Temporary buffer pointer */ |
| 1527 | |
| 1528 | remaining -= count; |
| 1529 | |
| 1530 | for (bufptr = r->bufptr; count > 0; count --, total ++) |
| 1531 | *buf++ = *bufptr++; |
| 1532 | |
| 1533 | r->bufptr = bufptr; |
| 1534 | } |
| 1535 | else |
| 1536 | { |
| 1537 | /* |
| 1538 | * Use memcpy() for a large read... |
| 1539 | */ |
| 1540 | |
| 1541 | memcpy(buf, r->bufptr, (size_t)count); |
| 1542 | r->bufptr += count; |
| 1543 | remaining -= count; |
| 1544 | } |
| 1545 | } |
| 1546 | |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1547 | DEBUG_printf(("5cups_raster_read: Returning %ld", (long)total)); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1548 | |
| 1549 | return (total); |
| 1550 | } |
| 1551 | |
| 1552 | |
| 1553 | /* |
| 1554 | * 'cups_raster_update()' - Update the raster header and row count for the |
| 1555 | * current page. |
| 1556 | */ |
| 1557 | |
| 1558 | static int /* O - 1 on success, 0 on failure */ |
| 1559 | cups_raster_update(cups_raster_t *r) /* I - Raster stream */ |
| 1560 | { |
| 1561 | if (r->sync == CUPS_RASTER_SYNCv1 || r->sync == CUPS_RASTER_REVSYNCv1 || |
| 1562 | r->header.cupsNumColors == 0) |
| 1563 | { |
| 1564 | /* |
| 1565 | * Set the "cupsNumColors" field according to the colorspace... |
| 1566 | */ |
| 1567 | |
| 1568 | switch (r->header.cupsColorSpace) |
| 1569 | { |
| 1570 | case CUPS_CSPACE_W : |
| 1571 | case CUPS_CSPACE_K : |
| 1572 | case CUPS_CSPACE_WHITE : |
| 1573 | case CUPS_CSPACE_GOLD : |
| 1574 | case CUPS_CSPACE_SILVER : |
| 1575 | case CUPS_CSPACE_SW : |
| 1576 | r->header.cupsNumColors = 1; |
| 1577 | break; |
| 1578 | |
| 1579 | case CUPS_CSPACE_RGB : |
| 1580 | case CUPS_CSPACE_CMY : |
| 1581 | case CUPS_CSPACE_YMC : |
| 1582 | case CUPS_CSPACE_CIEXYZ : |
| 1583 | case CUPS_CSPACE_CIELab : |
| 1584 | case CUPS_CSPACE_SRGB : |
| 1585 | case CUPS_CSPACE_ADOBERGB : |
| 1586 | case CUPS_CSPACE_ICC1 : |
| 1587 | case CUPS_CSPACE_ICC2 : |
| 1588 | case CUPS_CSPACE_ICC3 : |
| 1589 | case CUPS_CSPACE_ICC4 : |
| 1590 | case CUPS_CSPACE_ICC5 : |
| 1591 | case CUPS_CSPACE_ICC6 : |
| 1592 | case CUPS_CSPACE_ICC7 : |
| 1593 | case CUPS_CSPACE_ICC8 : |
| 1594 | case CUPS_CSPACE_ICC9 : |
| 1595 | case CUPS_CSPACE_ICCA : |
| 1596 | case CUPS_CSPACE_ICCB : |
| 1597 | case CUPS_CSPACE_ICCC : |
| 1598 | case CUPS_CSPACE_ICCD : |
| 1599 | case CUPS_CSPACE_ICCE : |
| 1600 | case CUPS_CSPACE_ICCF : |
| 1601 | r->header.cupsNumColors = 3; |
| 1602 | break; |
| 1603 | |
| 1604 | case CUPS_CSPACE_RGBA : |
| 1605 | case CUPS_CSPACE_RGBW : |
| 1606 | case CUPS_CSPACE_CMYK : |
| 1607 | case CUPS_CSPACE_YMCK : |
| 1608 | case CUPS_CSPACE_KCMY : |
| 1609 | case CUPS_CSPACE_GMCK : |
| 1610 | case CUPS_CSPACE_GMCS : |
| 1611 | r->header.cupsNumColors = 4; |
| 1612 | break; |
| 1613 | |
| 1614 | case CUPS_CSPACE_KCMYcm : |
| 1615 | if (r->header.cupsBitsPerPixel < 8) |
| 1616 | r->header.cupsNumColors = 6; |
| 1617 | else |
| 1618 | r->header.cupsNumColors = 4; |
| 1619 | break; |
| 1620 | |
| 1621 | case CUPS_CSPACE_DEVICE1 : |
| 1622 | case CUPS_CSPACE_DEVICE2 : |
| 1623 | case CUPS_CSPACE_DEVICE3 : |
| 1624 | case CUPS_CSPACE_DEVICE4 : |
| 1625 | case CUPS_CSPACE_DEVICE5 : |
| 1626 | case CUPS_CSPACE_DEVICE6 : |
| 1627 | case CUPS_CSPACE_DEVICE7 : |
| 1628 | case CUPS_CSPACE_DEVICE8 : |
| 1629 | case CUPS_CSPACE_DEVICE9 : |
| 1630 | case CUPS_CSPACE_DEVICEA : |
| 1631 | case CUPS_CSPACE_DEVICEB : |
| 1632 | case CUPS_CSPACE_DEVICEC : |
| 1633 | case CUPS_CSPACE_DEVICED : |
| 1634 | case CUPS_CSPACE_DEVICEE : |
| 1635 | case CUPS_CSPACE_DEVICEF : |
| 1636 | r->header.cupsNumColors = r->header.cupsColorSpace - |
| 1637 | CUPS_CSPACE_DEVICE1 + 1; |
| 1638 | break; |
| 1639 | |
| 1640 | default : |
| 1641 | /* Unknown color space */ |
| 1642 | return (0); |
| 1643 | } |
| 1644 | } |
| 1645 | |
| 1646 | /* |
| 1647 | * Set the number of bytes per pixel/color... |
| 1648 | */ |
| 1649 | |
| 1650 | if (r->header.cupsColorOrder == CUPS_ORDER_CHUNKED) |
| 1651 | r->bpp = (r->header.cupsBitsPerPixel + 7) / 8; |
| 1652 | else |
| 1653 | r->bpp = (r->header.cupsBitsPerColor + 7) / 8; |
| 1654 | |
| 1655 | if (r->bpp == 0) |
| 1656 | r->bpp = 1; |
| 1657 | |
| 1658 | /* |
| 1659 | * Set the number of remaining rows... |
| 1660 | */ |
| 1661 | |
| 1662 | if (r->header.cupsColorOrder == CUPS_ORDER_PLANAR) |
| 1663 | r->remaining = r->header.cupsHeight * r->header.cupsNumColors; |
| 1664 | else |
| 1665 | r->remaining = r->header.cupsHeight; |
| 1666 | |
| 1667 | /* |
| 1668 | * Allocate the compression buffer... |
| 1669 | */ |
| 1670 | |
| 1671 | if (r->compressed) |
| 1672 | { |
| 1673 | if (r->pixels != NULL) |
| 1674 | free(r->pixels); |
| 1675 | |
| 1676 | if ((r->pixels = calloc(r->header.cupsBytesPerLine, 1)) == NULL) |
| 1677 | { |
| 1678 | r->pcurrent = NULL; |
| 1679 | r->pend = NULL; |
| 1680 | r->count = 0; |
| 1681 | |
| 1682 | return (0); |
| 1683 | } |
| 1684 | |
| 1685 | r->pcurrent = r->pixels; |
| 1686 | r->pend = r->pixels + r->header.cupsBytesPerLine; |
| 1687 | r->count = 0; |
| 1688 | } |
| 1689 | |
| 1690 | return (1); |
| 1691 | } |
| 1692 | |
| 1693 | |
| 1694 | /* |
| 1695 | * 'cups_raster_write()' - Write a row of compressed raster data... |
| 1696 | */ |
| 1697 | |
| 1698 | static ssize_t /* O - Number of bytes written */ |
| 1699 | cups_raster_write( |
| 1700 | cups_raster_t *r, /* I - Raster stream */ |
| 1701 | const unsigned char *pixels) /* I - Pixel data to write */ |
| 1702 | { |
| 1703 | const unsigned char *start, /* Start of sequence */ |
| 1704 | *ptr, /* Current pointer in sequence */ |
| 1705 | *pend, /* End of raster buffer */ |
| 1706 | *plast; /* Pointer to last pixel */ |
| 1707 | unsigned char *wptr; /* Pointer into write buffer */ |
| 1708 | unsigned bpp, /* Bytes per pixel */ |
| 1709 | count; /* Count */ |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1710 | _cups_copyfunc_t cf; /* Copy function */ |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1711 | |
| 1712 | |
| 1713 | DEBUG_printf(("3cups_raster_write(r=%p, pixels=%p)", (void *)r, (void *)pixels)); |
| 1714 | |
| 1715 | /* |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1716 | * Determine whether we need to swap bytes... |
| 1717 | */ |
| 1718 | |
| 1719 | if (r->swapped && (r->header.cupsBitsPerColor == 16 || r->header.cupsBitsPerPixel == 12 || r->header.cupsBitsPerPixel == 16)) |
| 1720 | { |
| 1721 | DEBUG_puts("4cups_raster_write: Swapping bytes when writing."); |
| 1722 | cf = (_cups_copyfunc_t)cups_swap_copy; |
| 1723 | } |
| 1724 | else |
| 1725 | cf = (_cups_copyfunc_t)memcpy; |
| 1726 | |
| 1727 | /* |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1728 | * Allocate a write buffer as needed... |
| 1729 | */ |
| 1730 | |
| 1731 | count = r->header.cupsBytesPerLine * 2; |
| 1732 | if (count < 65536) |
| 1733 | count = 65536; |
| 1734 | |
| 1735 | if ((size_t)count > r->bufsize) |
| 1736 | { |
| 1737 | if (r->buffer) |
| 1738 | wptr = realloc(r->buffer, count); |
| 1739 | else |
| 1740 | wptr = malloc(count); |
| 1741 | |
| 1742 | if (!wptr) |
| 1743 | { |
| 1744 | DEBUG_printf(("4cups_raster_write: Unable to allocate " CUPS_LLFMT " bytes for raster buffer: %s", CUPS_LLCAST count, strerror(errno))); |
| 1745 | return (-1); |
| 1746 | } |
| 1747 | |
| 1748 | r->buffer = wptr; |
| 1749 | r->bufsize = count; |
| 1750 | } |
| 1751 | |
| 1752 | /* |
| 1753 | * Write the row repeat count... |
| 1754 | */ |
| 1755 | |
| 1756 | bpp = r->bpp; |
| 1757 | pend = pixels + r->header.cupsBytesPerLine; |
| 1758 | plast = pend - bpp; |
| 1759 | wptr = r->buffer; |
| 1760 | *wptr++ = (unsigned char)(r->count - 1); |
| 1761 | |
| 1762 | /* |
| 1763 | * Write using a modified PackBits compression... |
| 1764 | */ |
| 1765 | |
| 1766 | for (ptr = pixels; ptr < pend;) |
| 1767 | { |
| 1768 | start = ptr; |
| 1769 | ptr += bpp; |
| 1770 | |
| 1771 | if (ptr == pend) |
| 1772 | { |
| 1773 | /* |
| 1774 | * Encode a single pixel at the end... |
| 1775 | */ |
| 1776 | |
| 1777 | *wptr++ = 0; |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1778 | (*cf)(wptr, start, bpp); |
| 1779 | wptr += bpp; |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1780 | } |
| 1781 | else if (!memcmp(start, ptr, bpp)) |
| 1782 | { |
| 1783 | /* |
| 1784 | * Encode a sequence of repeating pixels... |
| 1785 | */ |
| 1786 | |
| 1787 | for (count = 2; count < 128 && ptr < plast; count ++, ptr += bpp) |
| 1788 | if (memcmp(ptr, ptr + bpp, bpp)) |
| 1789 | break; |
| 1790 | |
| 1791 | *wptr++ = (unsigned char)(count - 1); |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1792 | (*cf)(wptr, ptr, bpp); |
| 1793 | wptr += bpp; |
| 1794 | ptr += bpp; |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1795 | } |
| 1796 | else |
| 1797 | { |
| 1798 | /* |
| 1799 | * Encode a sequence of non-repeating pixels... |
| 1800 | */ |
| 1801 | |
| 1802 | for (count = 1; count < 128 && ptr < plast; count ++, ptr += bpp) |
| 1803 | if (!memcmp(ptr, ptr + bpp, bpp)) |
| 1804 | break; |
| 1805 | |
| 1806 | if (ptr >= plast && count < 128) |
| 1807 | { |
| 1808 | count ++; |
| 1809 | ptr += bpp; |
| 1810 | } |
| 1811 | |
| 1812 | *wptr++ = (unsigned char)(257 - count); |
| 1813 | |
| 1814 | count *= bpp; |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1815 | (*cf)(wptr, start, count); |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1816 | wptr += count; |
| 1817 | } |
| 1818 | } |
| 1819 | |
| 1820 | DEBUG_printf(("4cups_raster_write: Writing " CUPS_LLFMT " bytes.", CUPS_LLCAST (wptr - r->buffer))); |
| 1821 | |
| 1822 | return (cups_raster_io(r, r->buffer, (size_t)(wptr - r->buffer))); |
| 1823 | } |
| 1824 | |
| 1825 | |
| 1826 | /* |
Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame] | 1827 | * 'cups_swap()' - Swap bytes in raster data... |
| 1828 | */ |
| 1829 | |
| 1830 | static void |
| 1831 | cups_swap(unsigned char *buf, /* I - Buffer to swap */ |
| 1832 | size_t bytes) /* I - Number of bytes to swap */ |
| 1833 | { |
| 1834 | unsigned char even, odd; /* Temporary variables */ |
| 1835 | |
| 1836 | |
| 1837 | bytes /= 2; |
| 1838 | |
| 1839 | while (bytes > 0) |
| 1840 | { |
| 1841 | even = buf[0]; |
| 1842 | odd = buf[1]; |
| 1843 | buf[0] = odd; |
| 1844 | buf[1] = even; |
| 1845 | |
| 1846 | buf += 2; |
| 1847 | bytes --; |
| 1848 | } |
| 1849 | } |
| 1850 | |
| 1851 | |
| 1852 | /* |
Bryan Ferris | 5fb2ccd | 2019-06-21 10:49:26 -0700 | [diff] [blame] | 1853 | * 'cups_swap_copy()' - Copy and swap bytes in raster data... |
| 1854 | */ |
| 1855 | |
| 1856 | static void |
| 1857 | cups_swap_copy( |
| 1858 | unsigned char *dst, /* I - Destination */ |
| 1859 | const unsigned char *src, /* I - Source */ |
| 1860 | size_t bytes) /* I - Number of bytes to swap */ |
| 1861 | { |
| 1862 | bytes /= 2; |
| 1863 | |
| 1864 | while (bytes > 0) |
| 1865 | { |
| 1866 | dst[0] = src[1]; |
| 1867 | dst[1] = src[0]; |
| 1868 | |
| 1869 | dst += 2; |
| 1870 | src += 2; |
| 1871 | bytes --; |
| 1872 | } |
| 1873 | } |