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| 1 /* | |
| 2 * jccolor.c | |
| 3 * | |
| 4 * Copyright (C) 1991-1996, Thomas G. Lane. | |
| 5 * This file is part of the Independent JPEG Group's software. | |
| 6 * For conditions of distribution and use, see the accompanying README file. | |
| 7 * | |
| 8 * This file contains input colorspace conversion routines. | |
| 9 */ | |
| 10 | |
| 11 #define JPEG_INTERNALS | |
| 12 #include "jinclude.h" | |
| 13 #include "jpeglib.h" | |
| 14 | |
| 15 | |
| 16 /* Private subobject */ | |
| 17 | |
| 18 typedef struct { | |
| 19 struct jpeg_color_converter pub; /* public fields */ | |
| 20 | |
| 21 /* Private state for RGB->YCC conversion */ | |
| 22 INT32 * rgb_ycc_tab; /* => table for RGB to YCbCr conversion */ | |
| 23 } my_color_converter; | |
| 24 | |
| 25 typedef my_color_converter * my_cconvert_ptr; | |
| 26 | |
| 27 | |
| 28 /**************** RGB -> YCbCr conversion: most common case **************/ | |
| 29 | |
| 30 /* | |
| 31 * YCbCr is defined per CCIR 601-1, except that Cb and Cr are | |
| 32 * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. | |
| 33 * The conversion equations to be implemented are therefore | |
| 34 * Y = 0.29900 * R + 0.58700 * G + 0.11400 * B | |
| 35 * Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE | |
| 36 * Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE | |
| 37 * (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.) | |
| 38 * Note: older versions of the IJG code used a zero offset of MAXJSAMPLE/2, | |
| 39 * rather than CENTERJSAMPLE, for Cb and Cr. This gave equal positive and | |
| 40 * negative swings for Cb/Cr, but meant that grayscale values (Cb=Cr=0) | |
| 41 * were not represented exactly. Now we sacrifice exact representation of | |
| 42 * maximum red and maximum blue in order to get exact grayscales. | |
| 43 * | |
| 44 * To avoid floating-point arithmetic, we represent the fractional constants | |
| 45 * as integers scaled up by 2^16 (about 4 digits precision); we have to divide | |
| 46 * the products by 2^16, with appropriate rounding, to get the correct answer. | |
| 47 * | |
| 48 * For even more speed, we avoid doing any multiplications in the inner loop | |
| 49 * by precalculating the constants times R,G,B for all possible values. | |
| 50 * For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table); | |
| 51 * for 12-bit samples it is still acceptable. It's not very reasonable for | |
| 52 * 16-bit samples, but if you want lossless storage you shouldn't be changing | |
| 53 * colorspace anyway. | |
| 54 * The CENTERJSAMPLE offsets and the rounding fudge-factor of 0.5 are included | |
| 55 * in the tables to save adding them separately in the inner loop. | |
| 56 */ | |
| 57 | |
| 58 #define SCALEBITS 16 /* speediest right-shift on some machines */ | |
| 59 #define CBCR_OFFSET ((INT32) CENTERJSAMPLE << SCALEBITS) | |
| 60 #define ONE_HALF ((INT32) 1 << (SCALEBITS-1)) | |
| 61 #define FIX(x) ((INT32) ((x) * (1L<<SCALEBITS) + 0.5)) | |
| 62 | |
| 63 /* We allocate one big table and divide it up into eight parts, instead of | |
| 64 * doing eight alloc_small requests. This lets us use a single table base | |
| 65 * address, which can be held in a register in the inner loops on many | |
| 66 * machines (more than can hold all eight addresses, anyway). | |
| 67 */ | |
| 68 | |
| 69 #define R_Y_OFF 0 /* offset to R => Y section */ | |
| 70 #define G_Y_OFF (1*(MAXJSAMPLE+1)) /* offset to G => Y section */ | |
| 71 #define B_Y_OFF (2*(MAXJSAMPLE+1)) /* etc. */ | |
| 72 #define R_CB_OFF (3*(MAXJSAMPLE+1)) | |
| 73 #define G_CB_OFF (4*(MAXJSAMPLE+1)) | |
| 74 #define B_CB_OFF (5*(MAXJSAMPLE+1)) | |
| 75 #define R_CR_OFF B_CB_OFF /* B=>Cb, R=>Cr are the same */ | |
| 76 #define G_CR_OFF (6*(MAXJSAMPLE+1)) | |
| 77 #define B_CR_OFF (7*(MAXJSAMPLE+1)) | |
| 78 #define TABLE_SIZE (8*(MAXJSAMPLE+1)) | |
| 79 | |
| 80 | |
| 81 /* | |
| 82 * Initialize for RGB->YCC colorspace conversion. | |
| 83 */ | |
| 84 | |
| 85 METHODDEF(void) | |
| 86 rgb_ycc_start (j_compress_ptr cinfo) | |
| 87 { | |
| 88 my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; | |
| 89 INT32 * rgb_ycc_tab; | |
| 90 INT32 i; | |
| 91 | |
| 92 /* Allocate and fill in the conversion tables. */ | |
| 93 cconvert->rgb_ycc_tab = rgb_ycc_tab = (INT32 *) | |
| 94 (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, | |
| 95 (TABLE_SIZE * SIZEOF(INT32))); | |
| 96 | |
| 97 for (i = 0; i <= MAXJSAMPLE; i++) { | |
| 98 rgb_ycc_tab[i+R_Y_OFF] = FIX(0.29900) * i; | |
| 99 rgb_ycc_tab[i+G_Y_OFF] = FIX(0.58700) * i; | |
| 100 rgb_ycc_tab[i+B_Y_OFF] = FIX(0.11400) * i + ONE_HALF; | |
| 101 rgb_ycc_tab[i+R_CB_OFF] = (-FIX(0.16874)) * i; | |
| 102 rgb_ycc_tab[i+G_CB_OFF] = (-FIX(0.33126)) * i; | |
| 103 /* We use a rounding fudge-factor of 0.5-epsilon for Cb and Cr. | |
| 104 * This ensures that the maximum output will round to MAXJSAMPLE | |
| 105 * not MAXJSAMPLE+1, and thus that we don't have to range-limit. | |
| 106 */ | |
| 107 rgb_ycc_tab[i+B_CB_OFF] = FIX(0.50000) * i + CBCR_OFFSET + ONE_HALF-1; | |
| 108 /* B=>Cb and R=>Cr tables are the same | |
| 109 rgb_ycc_tab[i+R_CR_OFF] = FIX(0.50000) * i + CBCR_OFFSET + ONE_HALF-1; | |
| 110 */ | |
| 111 rgb_ycc_tab[i+G_CR_OFF] = (-FIX(0.41869)) * i; | |
| 112 rgb_ycc_tab[i+B_CR_OFF] = (-FIX(0.08131)) * i; | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 | |
| 117 /* | |
| 118 * Convert some rows of samples to the JPEG colorspace. | |
| 119 * | |
| 120 * Note that we change from the application's interleaved-pixel format | |
| 121 * to our internal noninterleaved, one-plane-per-component format. | |
| 122 * The input buffer is therefore three times as wide as the output buffer. | |
| 123 * | |
| 124 * A starting row offset is provided only for the output buffer. The caller | |
| 125 * can easily adjust the passed input_buf value to accommodate any row | |
| 126 * offset required on that side. | |
| 127 */ | |
| 128 | |
| 129 METHODDEF(void) | |
| 130 rgb_ycc_convert (j_compress_ptr cinfo, | |
| 131 JSAMPARRAY input_buf, JSAMPIMAGE output_buf, | |
| 132 JDIMENSION output_row, int num_rows) | |
| 133 { | |
| 134 my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; | |
| 135 register int r, g, b; | |
| 136 register INT32 * ctab = cconvert->rgb_ycc_tab; | |
| 137 register JSAMPROW inptr; | |
| 138 register JSAMPROW outptr0, outptr1, outptr2; | |
| 139 register JDIMENSION col; | |
| 140 JDIMENSION num_cols = cinfo->image_width; | |
| 141 | |
| 142 while (--num_rows >= 0) { | |
| 143 inptr = *input_buf++; | |
| 144 outptr0 = output_buf[0][output_row]; | |
| 145 outptr1 = output_buf[1][output_row]; | |
| 146 outptr2 = output_buf[2][output_row]; | |
| 147 output_row++; | |
| 148 for (col = 0; col < num_cols; col++) { | |
| 149 r = GETJSAMPLE(inptr[RGB_RED]); | |
| 150 g = GETJSAMPLE(inptr[RGB_GREEN]); | |
| 151 b = GETJSAMPLE(inptr[RGB_BLUE]); | |
| 152 inptr += RGB_PIXELSIZE; | |
| 153 /* If the inputs are 0..MAXJSAMPLE, the outputs of these equations | |
| 154 * must be too; we do not need an explicit range-limiting operation. | |
| 155 * Hence the value being shifted is never negative, and we don't | |
| 156 * need the general RIGHT_SHIFT macro. | |
| 157 */ | |
| 158 /* Y */ | |
| 159 outptr0[col] = (JSAMPLE) | |
| 160 ((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF]) | |
| 161 >> SCALEBITS); | |
| 162 /* Cb */ | |
| 163 outptr1[col] = (JSAMPLE) | |
| 164 ((ctab[r+R_CB_OFF] + ctab[g+G_CB_OFF] + ctab[b+B_CB_OFF]) | |
| 165 >> SCALEBITS); | |
| 166 /* Cr */ | |
| 167 outptr2[col] = (JSAMPLE) | |
| 168 ((ctab[r+R_CR_OFF] + ctab[g+G_CR_OFF] + ctab[b+B_CR_OFF]) | |
| 169 >> SCALEBITS); | |
| 170 } | |
| 171 } | |
| 172 } | |
| 173 | |
| 174 | |
| 175 /**************** Cases other than RGB -> YCbCr **************/ | |
| 176 | |
| 177 | |
| 178 /* | |
| 179 * Convert some rows of samples to the JPEG colorspace. | |
| 180 * This version handles RGB->grayscale conversion, which is the same | |
| 181 * as the RGB->Y portion of RGB->YCbCr. | |
| 182 * We assume rgb_ycc_start has been called (we only use the Y tables). | |
| 183 */ | |
| 184 | |
| 185 METHODDEF(void) | |
| 186 rgb_gray_convert (j_compress_ptr cinfo, | |
| 187 JSAMPARRAY input_buf, JSAMPIMAGE output_buf, | |
| 188 JDIMENSION output_row, int num_rows) | |
| 189 { | |
| 190 my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; | |
| 191 register int r, g, b; | |
| 192 register INT32 * ctab = cconvert->rgb_ycc_tab; | |
| 193 register JSAMPROW inptr; | |
| 194 register JSAMPROW outptr; | |
| 195 register JDIMENSION col; | |
| 196 JDIMENSION num_cols = cinfo->image_width; | |
| 197 | |
| 198 while (--num_rows >= 0) { | |
| 199 inptr = *input_buf++; | |
| 200 outptr = output_buf[0][output_row]; | |
| 201 output_row++; | |
| 202 for (col = 0; col < num_cols; col++) { | |
| 203 r = GETJSAMPLE(inptr[RGB_RED]); | |
| 204 g = GETJSAMPLE(inptr[RGB_GREEN]); | |
| 205 b = GETJSAMPLE(inptr[RGB_BLUE]); | |
| 206 inptr += RGB_PIXELSIZE; | |
| 207 /* Y */ | |
| 208 outptr[col] = (JSAMPLE) | |
| 209 ((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF]) | |
| 210 >> SCALEBITS); | |
| 211 } | |
| 212 } | |
| 213 } | |
| 214 | |
| 215 | |
| 216 /* | |
| 217 * Convert some rows of samples to the JPEG colorspace. | |
| 218 * This version handles Adobe-style CMYK->YCCK conversion, | |
| 219 * where we convert R=1-C, G=1-M, and B=1-Y to YCbCr using the same | |
| 220 * conversion as above, while passing K (black) unchanged. | |
| 221 * We assume rgb_ycc_start has been called. | |
| 222 */ | |
| 223 | |
| 224 METHODDEF(void) | |
| 225 cmyk_ycck_convert (j_compress_ptr cinfo, | |
| 226 JSAMPARRAY input_buf, JSAMPIMAGE output_buf, | |
| 227 JDIMENSION output_row, int num_rows) | |
| 228 { | |
| 229 my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; | |
| 230 register int r, g, b; | |
| 231 register INT32 * ctab = cconvert->rgb_ycc_tab; | |
| 232 register JSAMPROW inptr; | |
| 233 register JSAMPROW outptr0, outptr1, outptr2, outptr3; | |
| 234 register JDIMENSION col; | |
| 235 JDIMENSION num_cols = cinfo->image_width; | |
| 236 | |
| 237 while (--num_rows >= 0) { | |
| 238 inptr = *input_buf++; | |
| 239 outptr0 = output_buf[0][output_row]; | |
| 240 outptr1 = output_buf[1][output_row]; | |
| 241 outptr2 = output_buf[2][output_row]; | |
| 242 outptr3 = output_buf[3][output_row]; | |
| 243 output_row++; | |
| 244 for (col = 0; col < num_cols; col++) { | |
| 245 r = MAXJSAMPLE - GETJSAMPLE(inptr[0]); | |
| 246 g = MAXJSAMPLE - GETJSAMPLE(inptr[1]); | |
| 247 b = MAXJSAMPLE - GETJSAMPLE(inptr[2]); | |
| 248 /* K passes through as-is */ | |
| 249 outptr3[col] = inptr[3]; /* don't need GETJSAMPLE here */ | |
| 250 inptr += 4; | |
| 251 /* If the inputs are 0..MAXJSAMPLE, the outputs of these equations | |
| 252 * must be too; we do not need an explicit range-limiting operation. | |
| 253 * Hence the value being shifted is never negative, and we don't | |
| 254 * need the general RIGHT_SHIFT macro. | |
| 255 */ | |
| 256 /* Y */ | |
| 257 outptr0[col] = (JSAMPLE) | |
| 258 ((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF]) | |
| 259 >> SCALEBITS); | |
| 260 /* Cb */ | |
| 261 outptr1[col] = (JSAMPLE) | |
| 262 ((ctab[r+R_CB_OFF] + ctab[g+G_CB_OFF] + ctab[b+B_CB_OFF]) | |
| 263 >> SCALEBITS); | |
| 264 /* Cr */ | |
| 265 outptr2[col] = (JSAMPLE) | |
| 266 ((ctab[r+R_CR_OFF] + ctab[g+G_CR_OFF] + ctab[b+B_CR_OFF]) | |
| 267 >> SCALEBITS); | |
| 268 } | |
| 269 } | |
| 270 } | |
| 271 | |
| 272 | |
| 273 /* | |
| 274 * Convert some rows of samples to the JPEG colorspace. | |
| 275 * This version handles grayscale output with no conversion. | |
| 276 * The source can be either plain grayscale or YCbCr (since Y == gray). | |
| 277 */ | |
| 278 | |
| 279 METHODDEF(void) | |
| 280 grayscale_convert (j_compress_ptr cinfo, | |
| 281 JSAMPARRAY input_buf, JSAMPIMAGE output_buf, | |
| 282 JDIMENSION output_row, int num_rows) | |
| 283 { | |
| 284 register JSAMPROW inptr; | |
| 285 register JSAMPROW outptr; | |
| 286 register JDIMENSION col; | |
| 287 JDIMENSION num_cols = cinfo->image_width; | |
| 288 int instride = cinfo->input_components; | |
| 289 | |
| 290 while (--num_rows >= 0) { | |
| 291 inptr = *input_buf++; | |
| 292 outptr = output_buf[0][output_row]; | |
| 293 output_row++; | |
| 294 for (col = 0; col < num_cols; col++) { | |
| 295 outptr[col] = inptr[0]; /* don't need GETJSAMPLE() here */ | |
| 296 inptr += instride; | |
| 297 } | |
| 298 } | |
| 299 } | |
| 300 | |
| 301 | |
| 302 /* | |
| 303 * Convert some rows of samples to the JPEG colorspace. | |
| 304 * This version handles multi-component colorspaces without conversion. | |
| 305 * We assume input_components == num_components. | |
| 306 */ | |
| 307 | |
| 308 METHODDEF(void) | |
| 309 null_convert (j_compress_ptr cinfo, | |
| 310 JSAMPARRAY input_buf, JSAMPIMAGE output_buf, | |
| 311 JDIMENSION output_row, int num_rows) | |
| 312 { | |
| 313 register JSAMPROW inptr; | |
| 314 register JSAMPROW outptr; | |
| 315 register JDIMENSION col; | |
| 316 register int ci; | |
| 317 int nc = cinfo->num_components; | |
| 318 JDIMENSION num_cols = cinfo->image_width; | |
| 319 | |
| 320 while (--num_rows >= 0) { | |
| 321 /* It seems fastest to make a separate pass for each component. */ | |
| 322 for (ci = 0; ci < nc; ci++) { | |
| 323 inptr = *input_buf; | |
| 324 outptr = output_buf[ci][output_row]; | |
| 325 for (col = 0; col < num_cols; col++) { | |
| 326 outptr[col] = inptr[ci]; /* don't need GETJSAMPLE() here */ | |
| 327 inptr += nc; | |
| 328 } | |
| 329 } | |
| 330 input_buf++; | |
| 331 output_row++; | |
| 332 } | |
| 333 } | |
| 334 | |
| 335 | |
| 336 /* | |
| 337 * Empty method for start_pass. | |
| 338 */ | |
| 339 | |
| 340 METHODDEF(void) | |
| 341 null_method (j_compress_ptr cinfo) | |
| 342 { | |
| 343 /* no work needed */ | |
| 344 } | |
| 345 | |
| 346 | |
| 347 /* | |
| 348 * Module initialization routine for input colorspace conversion. | |
| 349 */ | |
| 350 | |
| 351 GLOBAL(void) | |
| 352 jinit_color_converter (j_compress_ptr cinfo) | |
| 353 { | |
| 354 my_cconvert_ptr cconvert; | |
| 355 | |
| 356 cconvert = (my_cconvert_ptr) | |
| 357 (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, | |
| 358 SIZEOF(my_color_converter)); | |
| 359 cinfo->cconvert = (struct jpeg_color_converter *) cconvert; | |
| 360 /* set start_pass to null method until we find out differently */ | |
| 361 cconvert->pub.start_pass = null_method; | |
| 362 | |
| 363 /* Make sure input_components agrees with in_color_space */ | |
| 364 switch (cinfo->in_color_space) { | |
| 365 case JCS_GRAYSCALE: | |
| 366 if (cinfo->input_components != 1) | |
| 367 ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); | |
| 368 break; | |
| 369 | |
| 370 case JCS_RGB: | |
| 371 #if RGB_PIXELSIZE != 3 | |
| 372 if (cinfo->input_components != RGB_PIXELSIZE) | |
| 373 ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); | |
| 374 break; | |
| 375 #endif /* else share code with YCbCr */ | |
| 376 | |
| 377 case JCS_YCbCr: | |
| 378 if (cinfo->input_components != 3) | |
| 379 ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); | |
| 380 break; | |
| 381 | |
| 382 case JCS_CMYK: | |
| 383 case JCS_YCCK: | |
| 384 if (cinfo->input_components != 4) | |
| 385 ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); | |
| 386 break; | |
| 387 | |
| 388 default: /* JCS_UNKNOWN can be anything */ | |
| 389 if (cinfo->input_components < 1) | |
| 390 ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); | |
| 391 break; | |
| 392 } | |
| 393 | |
| 394 /* Check num_components, set conversion method based on requested space */ | |
| 395 switch (cinfo->jpeg_color_space) { | |
| 396 case JCS_GRAYSCALE: | |
| 397 if (cinfo->num_components != 1) | |
| 398 ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); | |
| 399 if (cinfo->in_color_space == JCS_GRAYSCALE) | |
| 400 cconvert->pub.color_convert = grayscale_convert; | |
| 401 else if (cinfo->in_color_space == JCS_RGB) { | |
| 402 cconvert->pub.start_pass = rgb_ycc_start; | |
| 403 cconvert->pub.color_convert = rgb_gray_convert; | |
| 404 } else if (cinfo->in_color_space == JCS_YCbCr) | |
| 405 cconvert->pub.color_convert = grayscale_convert; | |
| 406 else | |
| 407 ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); | |
| 408 break; | |
| 409 | |
| 410 case JCS_RGB: | |
| 411 if (cinfo->num_components != 3) | |
| 412 ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); | |
| 413 if (cinfo->in_color_space == JCS_RGB && RGB_PIXELSIZE == 3) | |
| 414 cconvert->pub.color_convert = null_convert; | |
| 415 else | |
| 416 ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); | |
| 417 break; | |
| 418 | |
| 419 case JCS_YCbCr: | |
| 420 if (cinfo->num_components != 3) | |
| 421 ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); | |
| 422 if (cinfo->in_color_space == JCS_RGB) { | |
| 423 cconvert->pub.start_pass = rgb_ycc_start; | |
| 424 cconvert->pub.color_convert = rgb_ycc_convert; | |
| 425 } else if (cinfo->in_color_space == JCS_YCbCr) | |
| 426 cconvert->pub.color_convert = null_convert; | |
| 427 else | |
| 428 ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); | |
| 429 break; | |
| 430 | |
| 431 case JCS_CMYK: | |
| 432 if (cinfo->num_components != 4) | |
| 433 ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); | |
| 434 if (cinfo->in_color_space == JCS_CMYK) | |
| 435 cconvert->pub.color_convert = null_convert; | |
| 436 else | |
| 437 ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); | |
| 438 break; | |
| 439 | |
| 440 case JCS_YCCK: | |
| 441 if (cinfo->num_components != 4) | |
| 442 ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); | |
| 443 if (cinfo->in_color_space == JCS_CMYK) { | |
| 444 cconvert->pub.start_pass = rgb_ycc_start; | |
| 445 cconvert->pub.color_convert = cmyk_ycck_convert; | |
| 446 } else if (cinfo->in_color_space == JCS_YCCK) | |
| 447 cconvert->pub.color_convert = null_convert; | |
| 448 else | |
| 449 ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); | |
| 450 break; | |
| 451 | |
| 452 default: /* allow null conversion of JCS_UNKNOWN */ | |
| 453 if (cinfo->jpeg_color_space != cinfo->in_color_space || | |
| 454 cinfo->num_components != cinfo->input_components) | |
| 455 ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); | |
| 456 cconvert->pub.color_convert = null_convert; | |
| 457 break; | |
| 458 } | |
| 459 } | |
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Chromium Code Reviews
Issue 1705523002:
Remove libjpeg and libjpeg_turbo. (Closed)
Base URL: https://github.com/domokit/mojo.git@master