The Tor Browser / file comparison
comparison: media/libjpeg/jdmerge.c
media/libjpeg/jdmerge.c
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:622c5554cf5f |
|---|---|
| 1 /* | |
| 2 * jdmerge.c | |
| 3 * | |
| 4 * This file was part of the Independent JPEG Group's software: | |
| 5 * Copyright (C) 1994-1996, Thomas G. Lane. | |
| 6 * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB | |
| 7 * libjpeg-turbo Modifications: | |
| 8 * Copyright (C) 2009, 2011, D. R. Commander. | |
| 9 * For conditions of distribution and use, see the accompanying README file. | |
| 10 * | |
| 11 * This file contains code for merged upsampling/color conversion. | |
| 12 * | |
| 13 * This file combines functions from jdsample.c and jdcolor.c; | |
| 14 * read those files first to understand what's going on. | |
| 15 * | |
| 16 * When the chroma components are to be upsampled by simple replication | |
| 17 * (ie, box filtering), we can save some work in color conversion by | |
| 18 * calculating all the output pixels corresponding to a pair of chroma | |
| 19 * samples at one time. In the conversion equations | |
| 20 * R = Y + K1 * Cr | |
| 21 * G = Y + K2 * Cb + K3 * Cr | |
| 22 * B = Y + K4 * Cb | |
| 23 * only the Y term varies among the group of pixels corresponding to a pair | |
| 24 * of chroma samples, so the rest of the terms can be calculated just once. | |
| 25 * At typical sampling ratios, this eliminates half or three-quarters of the | |
| 26 * multiplications needed for color conversion. | |
| 27 * | |
| 28 * This file currently provides implementations for the following cases: | |
| 29 * YCbCr => RGB color conversion only. | |
| 30 * Sampling ratios of 2h1v or 2h2v. | |
| 31 * No scaling needed at upsample time. | |
| 32 * Corner-aligned (non-CCIR601) sampling alignment. | |
| 33 * Other special cases could be added, but in most applications these are | |
| 34 * the only common cases. (For uncommon cases we fall back on the more | |
| 35 * general code in jdsample.c and jdcolor.c.) | |
| 36 */ | |
| 37 | |
| 38 #define JPEG_INTERNALS | |
| 39 #include "jinclude.h" | |
| 40 #include "jpeglib.h" | |
| 41 #include "jsimd.h" | |
| 42 #include "config.h" | |
| 43 | |
| 44 #ifdef UPSAMPLE_MERGING_SUPPORTED | |
| 45 | |
| 46 | |
| 47 /* Private subobject */ | |
| 48 | |
| 49 typedef struct { | |
| 50 struct jpeg_upsampler pub; /* public fields */ | |
| 51 | |
| 52 /* Pointer to routine to do actual upsampling/conversion of one row group */ | |
| 53 JMETHOD(void, upmethod, (j_decompress_ptr cinfo, | |
| 54 JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, | |
| 55 JSAMPARRAY output_buf)); | |
| 56 | |
| 57 /* Private state for YCC->RGB conversion */ | |
| 58 int * Cr_r_tab; /* => table for Cr to R conversion */ | |
| 59 int * Cb_b_tab; /* => table for Cb to B conversion */ | |
| 60 INT32 * Cr_g_tab; /* => table for Cr to G conversion */ | |
| 61 INT32 * Cb_g_tab; /* => table for Cb to G conversion */ | |
| 62 | |
| 63 /* For 2:1 vertical sampling, we produce two output rows at a time. | |
| 64 * We need a "spare" row buffer to hold the second output row if the | |
| 65 * application provides just a one-row buffer; we also use the spare | |
| 66 * to discard the dummy last row if the image height is odd. | |
| 67 */ | |
| 68 JSAMPROW spare_row; | |
| 69 boolean spare_full; /* T if spare buffer is occupied */ | |
| 70 | |
| 71 JDIMENSION out_row_width; /* samples per output row */ | |
| 72 JDIMENSION rows_to_go; /* counts rows remaining in image */ | |
| 73 } my_upsampler; | |
| 74 | |
| 75 typedef my_upsampler * my_upsample_ptr; | |
| 76 | |
| 77 #define SCALEBITS 16 /* speediest right-shift on some machines */ | |
| 78 #define ONE_HALF ((INT32) 1 << (SCALEBITS-1)) | |
| 79 #define FIX(x) ((INT32) ((x) * (1L<<SCALEBITS) + 0.5)) | |
| 80 | |
| 81 | |
| 82 /* Include inline routines for colorspace extensions */ | |
| 83 | |
| 84 #include "jdmrgext.c" | |
| 85 #undef RGB_RED | |
| 86 #undef RGB_GREEN | |
| 87 #undef RGB_BLUE | |
| 88 #undef RGB_PIXELSIZE | |
| 89 | |
| 90 #define RGB_RED EXT_RGB_RED | |
| 91 #define RGB_GREEN EXT_RGB_GREEN | |
| 92 #define RGB_BLUE EXT_RGB_BLUE | |
| 93 #define RGB_PIXELSIZE EXT_RGB_PIXELSIZE | |
| 94 #define h2v1_merged_upsample_internal extrgb_h2v1_merged_upsample_internal | |
| 95 #define h2v2_merged_upsample_internal extrgb_h2v2_merged_upsample_internal | |
| 96 #include "jdmrgext.c" | |
| 97 #undef RGB_RED | |
| 98 #undef RGB_GREEN | |
| 99 #undef RGB_BLUE | |
| 100 #undef RGB_PIXELSIZE | |
| 101 #undef h2v1_merged_upsample_internal | |
| 102 #undef h2v2_merged_upsample_internal | |
| 103 | |
| 104 #define RGB_RED EXT_RGBX_RED | |
| 105 #define RGB_GREEN EXT_RGBX_GREEN | |
| 106 #define RGB_BLUE EXT_RGBX_BLUE | |
| 107 #define RGB_ALPHA 3 | |
| 108 #define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE | |
| 109 #define h2v1_merged_upsample_internal extrgbx_h2v1_merged_upsample_internal | |
| 110 #define h2v2_merged_upsample_internal extrgbx_h2v2_merged_upsample_internal | |
| 111 #include "jdmrgext.c" | |
| 112 #undef RGB_RED | |
| 113 #undef RGB_GREEN | |
| 114 #undef RGB_BLUE | |
| 115 #undef RGB_ALPHA | |
| 116 #undef RGB_PIXELSIZE | |
| 117 #undef h2v1_merged_upsample_internal | |
| 118 #undef h2v2_merged_upsample_internal | |
| 119 | |
| 120 #define RGB_RED EXT_BGR_RED | |
| 121 #define RGB_GREEN EXT_BGR_GREEN | |
| 122 #define RGB_BLUE EXT_BGR_BLUE | |
| 123 #define RGB_PIXELSIZE EXT_BGR_PIXELSIZE | |
| 124 #define h2v1_merged_upsample_internal extbgr_h2v1_merged_upsample_internal | |
| 125 #define h2v2_merged_upsample_internal extbgr_h2v2_merged_upsample_internal | |
| 126 #include "jdmrgext.c" | |
| 127 #undef RGB_RED | |
| 128 #undef RGB_GREEN | |
| 129 #undef RGB_BLUE | |
| 130 #undef RGB_PIXELSIZE | |
| 131 #undef h2v1_merged_upsample_internal | |
| 132 #undef h2v2_merged_upsample_internal | |
| 133 | |
| 134 #define RGB_RED EXT_BGRX_RED | |
| 135 #define RGB_GREEN EXT_BGRX_GREEN | |
| 136 #define RGB_BLUE EXT_BGRX_BLUE | |
| 137 #define RGB_ALPHA 3 | |
| 138 #define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE | |
| 139 #define h2v1_merged_upsample_internal extbgrx_h2v1_merged_upsample_internal | |
| 140 #define h2v2_merged_upsample_internal extbgrx_h2v2_merged_upsample_internal | |
| 141 #include "jdmrgext.c" | |
| 142 #undef RGB_RED | |
| 143 #undef RGB_GREEN | |
| 144 #undef RGB_BLUE | |
| 145 #undef RGB_ALPHA | |
| 146 #undef RGB_PIXELSIZE | |
| 147 #undef h2v1_merged_upsample_internal | |
| 148 #undef h2v2_merged_upsample_internal | |
| 149 | |
| 150 #define RGB_RED EXT_XBGR_RED | |
| 151 #define RGB_GREEN EXT_XBGR_GREEN | |
| 152 #define RGB_BLUE EXT_XBGR_BLUE | |
| 153 #define RGB_ALPHA 0 | |
| 154 #define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE | |
| 155 #define h2v1_merged_upsample_internal extxbgr_h2v1_merged_upsample_internal | |
| 156 #define h2v2_merged_upsample_internal extxbgr_h2v2_merged_upsample_internal | |
| 157 #include "jdmrgext.c" | |
| 158 #undef RGB_RED | |
| 159 #undef RGB_GREEN | |
| 160 #undef RGB_BLUE | |
| 161 #undef RGB_ALPHA | |
| 162 #undef RGB_PIXELSIZE | |
| 163 #undef h2v1_merged_upsample_internal | |
| 164 #undef h2v2_merged_upsample_internal | |
| 165 | |
| 166 #define RGB_RED EXT_XRGB_RED | |
| 167 #define RGB_GREEN EXT_XRGB_GREEN | |
| 168 #define RGB_BLUE EXT_XRGB_BLUE | |
| 169 #define RGB_ALPHA 0 | |
| 170 #define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE | |
| 171 #define h2v1_merged_upsample_internal extxrgb_h2v1_merged_upsample_internal | |
| 172 #define h2v2_merged_upsample_internal extxrgb_h2v2_merged_upsample_internal | |
| 173 #include "jdmrgext.c" | |
| 174 #undef RGB_RED | |
| 175 #undef RGB_GREEN | |
| 176 #undef RGB_BLUE | |
| 177 #undef RGB_ALPHA | |
| 178 #undef RGB_PIXELSIZE | |
| 179 #undef h2v1_merged_upsample_internal | |
| 180 #undef h2v2_merged_upsample_internal | |
| 181 | |
| 182 | |
| 183 /* | |
| 184 * Initialize tables for YCC->RGB colorspace conversion. | |
| 185 * This is taken directly from jdcolor.c; see that file for more info. | |
| 186 */ | |
| 187 | |
| 188 LOCAL(void) | |
| 189 build_ycc_rgb_table (j_decompress_ptr cinfo) | |
| 190 { | |
| 191 my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; | |
| 192 int i; | |
| 193 INT32 x; | |
| 194 SHIFT_TEMPS | |
| 195 | |
| 196 upsample->Cr_r_tab = (int *) | |
| 197 (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, | |
| 198 (MAXJSAMPLE+1) * SIZEOF(int)); | |
| 199 upsample->Cb_b_tab = (int *) | |
| 200 (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, | |
| 201 (MAXJSAMPLE+1) * SIZEOF(int)); | |
| 202 upsample->Cr_g_tab = (INT32 *) | |
| 203 (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, | |
| 204 (MAXJSAMPLE+1) * SIZEOF(INT32)); | |
| 205 upsample->Cb_g_tab = (INT32 *) | |
| 206 (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, | |
| 207 (MAXJSAMPLE+1) * SIZEOF(INT32)); | |
| 208 | |
| 209 for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) { | |
| 210 /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */ | |
| 211 /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */ | |
| 212 /* Cr=>R value is nearest int to 1.40200 * x */ | |
| 213 upsample->Cr_r_tab[i] = (int) | |
| 214 RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS); | |
| 215 /* Cb=>B value is nearest int to 1.77200 * x */ | |
| 216 upsample->Cb_b_tab[i] = (int) | |
| 217 RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS); | |
| 218 /* Cr=>G value is scaled-up -0.71414 * x */ | |
| 219 upsample->Cr_g_tab[i] = (- FIX(0.71414)) * x; | |
| 220 /* Cb=>G value is scaled-up -0.34414 * x */ | |
| 221 /* We also add in ONE_HALF so that need not do it in inner loop */ | |
| 222 upsample->Cb_g_tab[i] = (- FIX(0.34414)) * x + ONE_HALF; | |
| 223 } | |
| 224 } | |
| 225 | |
| 226 | |
| 227 /* | |
| 228 * Initialize for an upsampling pass. | |
| 229 */ | |
| 230 | |
| 231 METHODDEF(void) | |
| 232 start_pass_merged_upsample (j_decompress_ptr cinfo) | |
| 233 { | |
| 234 my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; | |
| 235 | |
| 236 /* Mark the spare buffer empty */ | |
| 237 upsample->spare_full = FALSE; | |
| 238 /* Initialize total-height counter for detecting bottom of image */ | |
| 239 upsample->rows_to_go = cinfo->output_height; | |
| 240 } | |
| 241 | |
| 242 | |
| 243 /* | |
| 244 * Control routine to do upsampling (and color conversion). | |
| 245 * | |
| 246 * The control routine just handles the row buffering considerations. | |
| 247 */ | |
| 248 | |
| 249 METHODDEF(void) | |
| 250 merged_2v_upsample (j_decompress_ptr cinfo, | |
| 251 JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, | |
| 252 JDIMENSION in_row_groups_avail, | |
| 253 JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, | |
| 254 JDIMENSION out_rows_avail) | |
| 255 /* 2:1 vertical sampling case: may need a spare row. */ | |
| 256 { | |
| 257 my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; | |
| 258 JSAMPROW work_ptrs[2]; | |
| 259 JDIMENSION num_rows; /* number of rows returned to caller */ | |
| 260 | |
| 261 if (upsample->spare_full) { | |
| 262 /* If we have a spare row saved from a previous cycle, just return it. */ | |
| 263 jcopy_sample_rows(& upsample->spare_row, 0, output_buf + *out_row_ctr, 0, | |
| 264 1, upsample->out_row_width); | |
| 265 num_rows = 1; | |
| 266 upsample->spare_full = FALSE; | |
| 267 } else { | |
| 268 /* Figure number of rows to return to caller. */ | |
| 269 num_rows = 2; | |
| 270 /* Not more than the distance to the end of the image. */ | |
| 271 if (num_rows > upsample->rows_to_go) | |
| 272 num_rows = upsample->rows_to_go; | |
| 273 /* And not more than what the client can accept: */ | |
| 274 out_rows_avail -= *out_row_ctr; | |
| 275 if (num_rows > out_rows_avail) | |
| 276 num_rows = out_rows_avail; | |
| 277 /* Create output pointer array for upsampler. */ | |
| 278 work_ptrs[0] = output_buf[*out_row_ctr]; | |
| 279 if (num_rows > 1) { | |
| 280 work_ptrs[1] = output_buf[*out_row_ctr + 1]; | |
| 281 } else { | |
| 282 work_ptrs[1] = upsample->spare_row; | |
| 283 upsample->spare_full = TRUE; | |
| 284 } | |
| 285 /* Now do the upsampling. */ | |
| 286 (*upsample->upmethod) (cinfo, input_buf, *in_row_group_ctr, work_ptrs); | |
| 287 } | |
| 288 | |
| 289 /* Adjust counts */ | |
| 290 *out_row_ctr += num_rows; | |
| 291 upsample->rows_to_go -= num_rows; | |
| 292 /* When the buffer is emptied, declare this input row group consumed */ | |
| 293 if (! upsample->spare_full) | |
| 294 (*in_row_group_ctr)++; | |
| 295 } | |
| 296 | |
| 297 | |
| 298 METHODDEF(void) | |
| 299 merged_1v_upsample (j_decompress_ptr cinfo, | |
| 300 JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, | |
| 301 JDIMENSION in_row_groups_avail, | |
| 302 JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, | |
| 303 JDIMENSION out_rows_avail) | |
| 304 /* 1:1 vertical sampling case: much easier, never need a spare row. */ | |
| 305 { | |
| 306 my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; | |
| 307 | |
| 308 /* Just do the upsampling. */ | |
| 309 (*upsample->upmethod) (cinfo, input_buf, *in_row_group_ctr, | |
| 310 output_buf + *out_row_ctr); | |
| 311 /* Adjust counts */ | |
| 312 (*out_row_ctr)++; | |
| 313 (*in_row_group_ctr)++; | |
| 314 } | |
| 315 | |
| 316 | |
| 317 /* | |
| 318 * These are the routines invoked by the control routines to do | |
| 319 * the actual upsampling/conversion. One row group is processed per call. | |
| 320 * | |
| 321 * Note: since we may be writing directly into application-supplied buffers, | |
| 322 * we have to be honest about the output width; we can't assume the buffer | |
| 323 * has been rounded up to an even width. | |
| 324 */ | |
| 325 | |
| 326 | |
| 327 /* | |
| 328 * Upsample and color convert for the case of 2:1 horizontal and 1:1 vertical. | |
| 329 */ | |
| 330 | |
| 331 METHODDEF(void) | |
| 332 h2v1_merged_upsample (j_decompress_ptr cinfo, | |
| 333 JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, | |
| 334 JSAMPARRAY output_buf) | |
| 335 { | |
| 336 switch (cinfo->out_color_space) { | |
| 337 case JCS_EXT_RGB: | |
| 338 extrgb_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 339 output_buf); | |
| 340 break; | |
| 341 case JCS_EXT_RGBX: | |
| 342 case JCS_EXT_RGBA: | |
| 343 extrgbx_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 344 output_buf); | |
| 345 break; | |
| 346 case JCS_EXT_BGR: | |
| 347 extbgr_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 348 output_buf); | |
| 349 break; | |
| 350 case JCS_EXT_BGRX: | |
| 351 case JCS_EXT_BGRA: | |
| 352 extbgrx_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 353 output_buf); | |
| 354 break; | |
| 355 case JCS_EXT_XBGR: | |
| 356 case JCS_EXT_ABGR: | |
| 357 extxbgr_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 358 output_buf); | |
| 359 break; | |
| 360 case JCS_EXT_XRGB: | |
| 361 case JCS_EXT_ARGB: | |
| 362 extxrgb_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 363 output_buf); | |
| 364 break; | |
| 365 default: | |
| 366 h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 367 output_buf); | |
| 368 break; | |
| 369 } | |
| 370 } | |
| 371 | |
| 372 | |
| 373 /* | |
| 374 * Upsample and color convert for the case of 2:1 horizontal and 2:1 vertical. | |
| 375 */ | |
| 376 | |
| 377 METHODDEF(void) | |
| 378 h2v2_merged_upsample (j_decompress_ptr cinfo, | |
| 379 JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, | |
| 380 JSAMPARRAY output_buf) | |
| 381 { | |
| 382 switch (cinfo->out_color_space) { | |
| 383 case JCS_EXT_RGB: | |
| 384 extrgb_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 385 output_buf); | |
| 386 break; | |
| 387 case JCS_EXT_RGBX: | |
| 388 case JCS_EXT_RGBA: | |
| 389 extrgbx_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 390 output_buf); | |
| 391 break; | |
| 392 case JCS_EXT_BGR: | |
| 393 extbgr_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 394 output_buf); | |
| 395 break; | |
| 396 case JCS_EXT_BGRX: | |
| 397 case JCS_EXT_BGRA: | |
| 398 extbgrx_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 399 output_buf); | |
| 400 break; | |
| 401 case JCS_EXT_XBGR: | |
| 402 case JCS_EXT_ABGR: | |
| 403 extxbgr_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 404 output_buf); | |
| 405 break; | |
| 406 case JCS_EXT_XRGB: | |
| 407 case JCS_EXT_ARGB: | |
| 408 extxrgb_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 409 output_buf); | |
| 410 break; | |
| 411 default: | |
| 412 h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr, | |
| 413 output_buf); | |
| 414 break; | |
| 415 } | |
| 416 } | |
| 417 | |
| 418 | |
| 419 /* | |
| 420 * Module initialization routine for merged upsampling/color conversion. | |
| 421 * | |
| 422 * NB: this is called under the conditions determined by use_merged_upsample() | |
| 423 * in jdmaster.c. That routine MUST correspond to the actual capabilities | |
| 424 * of this module; no safety checks are made here. | |
| 425 */ | |
| 426 | |
| 427 GLOBAL(void) | |
| 428 jinit_merged_upsampler (j_decompress_ptr cinfo) | |
| 429 { | |
| 430 my_upsample_ptr upsample; | |
| 431 | |
| 432 upsample = (my_upsample_ptr) | |
| 433 (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, | |
| 434 SIZEOF(my_upsampler)); | |
| 435 cinfo->upsample = (struct jpeg_upsampler *) upsample; | |
| 436 upsample->pub.start_pass = start_pass_merged_upsample; | |
| 437 upsample->pub.need_context_rows = FALSE; | |
| 438 | |
| 439 upsample->out_row_width = cinfo->output_width * cinfo->out_color_components; | |
| 440 | |
| 441 if (cinfo->max_v_samp_factor == 2) { | |
| 442 upsample->pub.upsample = merged_2v_upsample; | |
| 443 if (jsimd_can_h2v2_merged_upsample()) | |
| 444 upsample->upmethod = jsimd_h2v2_merged_upsample; | |
| 445 else | |
| 446 upsample->upmethod = h2v2_merged_upsample; | |
| 447 /* Allocate a spare row buffer */ | |
| 448 upsample->spare_row = (JSAMPROW) | |
| 449 (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, | |
| 450 (size_t) (upsample->out_row_width * SIZEOF(JSAMPLE))); | |
| 451 } else { | |
| 452 upsample->pub.upsample = merged_1v_upsample; | |
| 453 if (jsimd_can_h2v1_merged_upsample()) | |
| 454 upsample->upmethod = jsimd_h2v1_merged_upsample; | |
| 455 else | |
| 456 upsample->upmethod = h2v1_merged_upsample; | |
| 457 /* No spare row needed */ | |
| 458 upsample->spare_row = NULL; | |
| 459 } | |
| 460 | |
| 461 build_ycc_rgb_table(cinfo); | |
| 462 } | |
| 463 | |
| 464 #endif /* UPSAMPLE_MERGING_SUPPORTED */ |
