DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 1 | /* |
| 2 | * jdcol565.c |
| 3 | * |
| 4 | * This file was part of the Independent JPEG Group's software: |
| 5 | * Copyright (C) 1991-1997, Thomas G. Lane. |
| 6 | * Modifications: |
| 7 | * Copyright (C) 2013, Linaro Limited. |
DRC | 1e32fe3 | 2015-10-14 17:32:39 -0500 | [diff] [blame^] | 8 | * Copyright (C) 2014-2015, D. R. Commander. |
DRC | 7e3acc0 | 2015-10-10 10:25:46 -0500 | [diff] [blame] | 9 | * For conditions of distribution and use, see the accompanying README.ijg |
| 10 | * file. |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 11 | * |
| 12 | * This file contains output colorspace conversion routines. |
| 13 | */ |
| 14 | |
| 15 | /* This file is included by jdcolor.c */ |
| 16 | |
| 17 | |
DRC | 72a3cc0 | 2014-08-30 20:37:50 +0000 | [diff] [blame] | 18 | INLINE |
| 19 | LOCAL(void) |
| 20 | ycc_rgb565_convert_internal (j_decompress_ptr cinfo, |
| 21 | JSAMPIMAGE input_buf, JDIMENSION input_row, |
| 22 | JSAMPARRAY output_buf, int num_rows) |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 23 | { |
| 24 | my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; |
| 25 | register int y, cb, cr; |
| 26 | register JSAMPROW outptr; |
| 27 | register JSAMPROW inptr0, inptr1, inptr2; |
| 28 | register JDIMENSION col; |
| 29 | JDIMENSION num_cols = cinfo->output_width; |
| 30 | /* copy these pointers into registers if possible */ |
| 31 | register JSAMPLE * range_limit = cinfo->sample_range_limit; |
| 32 | register int * Crrtab = cconvert->Cr_r_tab; |
| 33 | register int * Cbbtab = cconvert->Cb_b_tab; |
DRC | 1e32fe3 | 2015-10-14 17:32:39 -0500 | [diff] [blame^] | 34 | register JLONG * Crgtab = cconvert->Cr_g_tab; |
| 35 | register JLONG * Cbgtab = cconvert->Cb_g_tab; |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 36 | SHIFT_TEMPS |
| 37 | |
| 38 | while (--num_rows >= 0) { |
DRC | 1e32fe3 | 2015-10-14 17:32:39 -0500 | [diff] [blame^] | 39 | JLONG rgb; |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 40 | unsigned int r, g, b; |
| 41 | inptr0 = input_buf[0][input_row]; |
| 42 | inptr1 = input_buf[1][input_row]; |
| 43 | inptr2 = input_buf[2][input_row]; |
| 44 | input_row++; |
| 45 | outptr = *output_buf++; |
| 46 | |
| 47 | if (PACK_NEED_ALIGNMENT(outptr)) { |
| 48 | y = GETJSAMPLE(*inptr0++); |
| 49 | cb = GETJSAMPLE(*inptr1++); |
| 50 | cr = GETJSAMPLE(*inptr2++); |
| 51 | r = range_limit[y + Crrtab[cr]]; |
| 52 | g = range_limit[y + ((int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], |
| 53 | SCALEBITS))]; |
| 54 | b = range_limit[y + Cbbtab[cb]]; |
| 55 | rgb = PACK_SHORT_565(r, g, b); |
| 56 | *(INT16*)outptr = rgb; |
| 57 | outptr += 2; |
| 58 | num_cols--; |
| 59 | } |
| 60 | for (col = 0; col < (num_cols >> 1); col++) { |
| 61 | y = GETJSAMPLE(*inptr0++); |
| 62 | cb = GETJSAMPLE(*inptr1++); |
| 63 | cr = GETJSAMPLE(*inptr2++); |
| 64 | r = range_limit[y + Crrtab[cr]]; |
| 65 | g = range_limit[y + ((int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], |
| 66 | SCALEBITS))]; |
| 67 | b = range_limit[y + Cbbtab[cb]]; |
| 68 | rgb = PACK_SHORT_565(r, g, b); |
| 69 | |
| 70 | y = GETJSAMPLE(*inptr0++); |
| 71 | cb = GETJSAMPLE(*inptr1++); |
| 72 | cr = GETJSAMPLE(*inptr2++); |
| 73 | r = range_limit[y + Crrtab[cr]]; |
| 74 | g = range_limit[y + ((int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], |
| 75 | SCALEBITS))]; |
| 76 | b = range_limit[y + Cbbtab[cb]]; |
| 77 | rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r, g, b)); |
| 78 | |
| 79 | WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); |
| 80 | outptr += 4; |
| 81 | } |
| 82 | if (num_cols & 1) { |
| 83 | y = GETJSAMPLE(*inptr0); |
| 84 | cb = GETJSAMPLE(*inptr1); |
| 85 | cr = GETJSAMPLE(*inptr2); |
| 86 | r = range_limit[y + Crrtab[cr]]; |
| 87 | g = range_limit[y + ((int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], |
| 88 | SCALEBITS))]; |
| 89 | b = range_limit[y + Cbbtab[cb]]; |
| 90 | rgb = PACK_SHORT_565(r, g, b); |
| 91 | *(INT16*)outptr = rgb; |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | |
DRC | 72a3cc0 | 2014-08-30 20:37:50 +0000 | [diff] [blame] | 97 | INLINE |
| 98 | LOCAL(void) |
| 99 | ycc_rgb565D_convert_internal (j_decompress_ptr cinfo, |
| 100 | JSAMPIMAGE input_buf, JDIMENSION input_row, |
| 101 | JSAMPARRAY output_buf, int num_rows) |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 102 | { |
| 103 | my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; |
| 104 | register int y, cb, cr; |
| 105 | register JSAMPROW outptr; |
| 106 | register JSAMPROW inptr0, inptr1, inptr2; |
| 107 | register JDIMENSION col; |
| 108 | JDIMENSION num_cols = cinfo->output_width; |
| 109 | /* copy these pointers into registers if possible */ |
| 110 | register JSAMPLE * range_limit = cinfo->sample_range_limit; |
| 111 | register int * Crrtab = cconvert->Cr_r_tab; |
| 112 | register int * Cbbtab = cconvert->Cb_b_tab; |
DRC | 1e32fe3 | 2015-10-14 17:32:39 -0500 | [diff] [blame^] | 113 | register JLONG * Crgtab = cconvert->Cr_g_tab; |
| 114 | register JLONG * Cbgtab = cconvert->Cb_g_tab; |
| 115 | JLONG d0 = dither_matrix[cinfo->output_scanline & DITHER_MASK]; |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 116 | SHIFT_TEMPS |
| 117 | |
| 118 | while (--num_rows >= 0) { |
DRC | 1e32fe3 | 2015-10-14 17:32:39 -0500 | [diff] [blame^] | 119 | JLONG rgb; |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 120 | unsigned int r, g, b; |
| 121 | |
| 122 | inptr0 = input_buf[0][input_row]; |
| 123 | inptr1 = input_buf[1][input_row]; |
| 124 | inptr2 = input_buf[2][input_row]; |
| 125 | input_row++; |
| 126 | outptr = *output_buf++; |
| 127 | if (PACK_NEED_ALIGNMENT(outptr)) { |
| 128 | y = GETJSAMPLE(*inptr0++); |
| 129 | cb = GETJSAMPLE(*inptr1++); |
| 130 | cr = GETJSAMPLE(*inptr2++); |
| 131 | r = range_limit[DITHER_565_R(y + Crrtab[cr], d0)]; |
| 132 | g = range_limit[DITHER_565_G(y + |
| 133 | ((int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], |
| 134 | SCALEBITS)), d0)]; |
| 135 | b = range_limit[DITHER_565_B(y + Cbbtab[cb], d0)]; |
| 136 | rgb = PACK_SHORT_565(r, g, b); |
| 137 | *(INT16*)outptr = rgb; |
| 138 | outptr += 2; |
| 139 | num_cols--; |
| 140 | } |
| 141 | for (col = 0; col < (num_cols >> 1); col++) { |
| 142 | y = GETJSAMPLE(*inptr0++); |
| 143 | cb = GETJSAMPLE(*inptr1++); |
| 144 | cr = GETJSAMPLE(*inptr2++); |
| 145 | r = range_limit[DITHER_565_R(y + Crrtab[cr], d0)]; |
| 146 | g = range_limit[DITHER_565_G(y + |
| 147 | ((int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], |
| 148 | SCALEBITS)), d0)]; |
| 149 | b = range_limit[DITHER_565_B(y + Cbbtab[cb], d0)]; |
| 150 | d0 = DITHER_ROTATE(d0); |
| 151 | rgb = PACK_SHORT_565(r, g, b); |
| 152 | |
| 153 | y = GETJSAMPLE(*inptr0++); |
| 154 | cb = GETJSAMPLE(*inptr1++); |
| 155 | cr = GETJSAMPLE(*inptr2++); |
| 156 | r = range_limit[DITHER_565_R(y + Crrtab[cr], d0)]; |
| 157 | g = range_limit[DITHER_565_G(y + |
| 158 | ((int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], |
| 159 | SCALEBITS)), d0)]; |
| 160 | b = range_limit[DITHER_565_B(y + Cbbtab[cb], d0)]; |
| 161 | d0 = DITHER_ROTATE(d0); |
| 162 | rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r, g, b)); |
| 163 | |
| 164 | WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); |
| 165 | outptr += 4; |
| 166 | } |
| 167 | if (num_cols & 1) { |
| 168 | y = GETJSAMPLE(*inptr0); |
| 169 | cb = GETJSAMPLE(*inptr1); |
| 170 | cr = GETJSAMPLE(*inptr2); |
| 171 | r = range_limit[DITHER_565_R(y + Crrtab[cr], d0)]; |
| 172 | g = range_limit[DITHER_565_G(y + |
| 173 | ((int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], |
| 174 | SCALEBITS)), d0)]; |
| 175 | b = range_limit[DITHER_565_B(y + Cbbtab[cb], d0)]; |
| 176 | rgb = PACK_SHORT_565(r, g, b); |
| 177 | *(INT16*)outptr = rgb; |
| 178 | } |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | |
DRC | 72a3cc0 | 2014-08-30 20:37:50 +0000 | [diff] [blame] | 183 | INLINE |
| 184 | LOCAL(void) |
| 185 | rgb_rgb565_convert_internal (j_decompress_ptr cinfo, |
| 186 | JSAMPIMAGE input_buf, JDIMENSION input_row, |
| 187 | JSAMPARRAY output_buf, int num_rows) |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 188 | { |
| 189 | register JSAMPROW outptr; |
| 190 | register JSAMPROW inptr0, inptr1, inptr2; |
| 191 | register JDIMENSION col; |
| 192 | JDIMENSION num_cols = cinfo->output_width; |
| 193 | SHIFT_TEMPS |
| 194 | |
| 195 | while (--num_rows >= 0) { |
DRC | 1e32fe3 | 2015-10-14 17:32:39 -0500 | [diff] [blame^] | 196 | JLONG rgb; |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 197 | unsigned int r, g, b; |
| 198 | |
| 199 | inptr0 = input_buf[0][input_row]; |
| 200 | inptr1 = input_buf[1][input_row]; |
| 201 | inptr2 = input_buf[2][input_row]; |
| 202 | input_row++; |
| 203 | outptr = *output_buf++; |
| 204 | if (PACK_NEED_ALIGNMENT(outptr)) { |
| 205 | r = GETJSAMPLE(*inptr0++); |
| 206 | g = GETJSAMPLE(*inptr1++); |
| 207 | b = GETJSAMPLE(*inptr2++); |
| 208 | rgb = PACK_SHORT_565(r, g, b); |
| 209 | *(INT16*)outptr = rgb; |
| 210 | outptr += 2; |
| 211 | num_cols--; |
| 212 | } |
| 213 | for (col = 0; col < (num_cols >> 1); col++) { |
| 214 | r = GETJSAMPLE(*inptr0++); |
| 215 | g = GETJSAMPLE(*inptr1++); |
| 216 | b = GETJSAMPLE(*inptr2++); |
| 217 | rgb = PACK_SHORT_565(r, g, b); |
| 218 | |
| 219 | r = GETJSAMPLE(*inptr0++); |
| 220 | g = GETJSAMPLE(*inptr1++); |
| 221 | b = GETJSAMPLE(*inptr2++); |
| 222 | rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r, g, b)); |
| 223 | |
| 224 | WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); |
| 225 | outptr += 4; |
| 226 | } |
| 227 | if (num_cols & 1) { |
| 228 | r = GETJSAMPLE(*inptr0); |
| 229 | g = GETJSAMPLE(*inptr1); |
| 230 | b = GETJSAMPLE(*inptr2); |
| 231 | rgb = PACK_SHORT_565(r, g, b); |
| 232 | *(INT16*)outptr = rgb; |
| 233 | } |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | |
DRC | 72a3cc0 | 2014-08-30 20:37:50 +0000 | [diff] [blame] | 238 | INLINE |
| 239 | LOCAL(void) |
| 240 | rgb_rgb565D_convert_internal (j_decompress_ptr cinfo, |
| 241 | JSAMPIMAGE input_buf, JDIMENSION input_row, |
| 242 | JSAMPARRAY output_buf, int num_rows) |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 243 | { |
| 244 | register JSAMPROW outptr; |
| 245 | register JSAMPROW inptr0, inptr1, inptr2; |
| 246 | register JDIMENSION col; |
| 247 | register JSAMPLE * range_limit = cinfo->sample_range_limit; |
| 248 | JDIMENSION num_cols = cinfo->output_width; |
DRC | 1e32fe3 | 2015-10-14 17:32:39 -0500 | [diff] [blame^] | 249 | JLONG d0 = dither_matrix[cinfo->output_scanline & DITHER_MASK]; |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 250 | SHIFT_TEMPS |
| 251 | |
| 252 | while (--num_rows >= 0) { |
DRC | 1e32fe3 | 2015-10-14 17:32:39 -0500 | [diff] [blame^] | 253 | JLONG rgb; |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 254 | unsigned int r, g, b; |
| 255 | |
| 256 | inptr0 = input_buf[0][input_row]; |
| 257 | inptr1 = input_buf[1][input_row]; |
| 258 | inptr2 = input_buf[2][input_row]; |
| 259 | input_row++; |
| 260 | outptr = *output_buf++; |
| 261 | if (PACK_NEED_ALIGNMENT(outptr)) { |
| 262 | r = range_limit[DITHER_565_R(GETJSAMPLE(*inptr0++), d0)]; |
| 263 | g = range_limit[DITHER_565_G(GETJSAMPLE(*inptr1++), d0)]; |
| 264 | b = range_limit[DITHER_565_B(GETJSAMPLE(*inptr2++), d0)]; |
| 265 | rgb = PACK_SHORT_565(r, g, b); |
| 266 | *(INT16*)outptr = rgb; |
| 267 | outptr += 2; |
| 268 | num_cols--; |
| 269 | } |
| 270 | for (col = 0; col < (num_cols >> 1); col++) { |
| 271 | r = range_limit[DITHER_565_R(GETJSAMPLE(*inptr0++), d0)]; |
| 272 | g = range_limit[DITHER_565_G(GETJSAMPLE(*inptr1++), d0)]; |
| 273 | b = range_limit[DITHER_565_B(GETJSAMPLE(*inptr2++), d0)]; |
| 274 | d0 = DITHER_ROTATE(d0); |
| 275 | rgb = PACK_SHORT_565(r, g, b); |
| 276 | |
| 277 | r = range_limit[DITHER_565_R(GETJSAMPLE(*inptr0++), d0)]; |
| 278 | g = range_limit[DITHER_565_G(GETJSAMPLE(*inptr1++), d0)]; |
| 279 | b = range_limit[DITHER_565_B(GETJSAMPLE(*inptr2++), d0)]; |
| 280 | d0 = DITHER_ROTATE(d0); |
| 281 | rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r, g, b)); |
| 282 | |
| 283 | WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); |
| 284 | outptr += 4; |
| 285 | } |
| 286 | if (num_cols & 1) { |
| 287 | r = range_limit[DITHER_565_R(GETJSAMPLE(*inptr0), d0)]; |
| 288 | g = range_limit[DITHER_565_G(GETJSAMPLE(*inptr1), d0)]; |
| 289 | b = range_limit[DITHER_565_B(GETJSAMPLE(*inptr2), d0)]; |
| 290 | rgb = PACK_SHORT_565(r, g, b); |
| 291 | *(INT16*)outptr = rgb; |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | |
DRC | 72a3cc0 | 2014-08-30 20:37:50 +0000 | [diff] [blame] | 297 | INLINE |
| 298 | LOCAL(void) |
| 299 | gray_rgb565_convert_internal (j_decompress_ptr cinfo, |
| 300 | JSAMPIMAGE input_buf, JDIMENSION input_row, |
| 301 | JSAMPARRAY output_buf, int num_rows) |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 302 | { |
| 303 | register JSAMPROW inptr, outptr; |
| 304 | register JDIMENSION col; |
| 305 | JDIMENSION num_cols = cinfo->output_width; |
| 306 | |
| 307 | while (--num_rows >= 0) { |
DRC | 1e32fe3 | 2015-10-14 17:32:39 -0500 | [diff] [blame^] | 308 | JLONG rgb; |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 309 | unsigned int g; |
| 310 | |
| 311 | inptr = input_buf[0][input_row++]; |
| 312 | outptr = *output_buf++; |
| 313 | if (PACK_NEED_ALIGNMENT(outptr)) { |
| 314 | g = *inptr++; |
| 315 | rgb = PACK_SHORT_565(g, g, g); |
| 316 | *(INT16*)outptr = rgb; |
| 317 | outptr += 2; |
| 318 | num_cols--; |
| 319 | } |
| 320 | for (col = 0; col < (num_cols >> 1); col++) { |
| 321 | g = *inptr++; |
| 322 | rgb = PACK_SHORT_565(g, g, g); |
| 323 | g = *inptr++; |
| 324 | rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(g, g, g)); |
| 325 | WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); |
| 326 | outptr += 4; |
| 327 | } |
| 328 | if (num_cols & 1) { |
| 329 | g = *inptr; |
| 330 | rgb = PACK_SHORT_565(g, g, g); |
| 331 | *(INT16*)outptr = rgb; |
| 332 | } |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | |
DRC | 72a3cc0 | 2014-08-30 20:37:50 +0000 | [diff] [blame] | 337 | INLINE |
| 338 | LOCAL(void) |
| 339 | gray_rgb565D_convert_internal (j_decompress_ptr cinfo, |
| 340 | JSAMPIMAGE input_buf, JDIMENSION input_row, |
| 341 | JSAMPARRAY output_buf, int num_rows) |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 342 | { |
| 343 | register JSAMPROW inptr, outptr; |
| 344 | register JDIMENSION col; |
| 345 | register JSAMPLE * range_limit = cinfo->sample_range_limit; |
| 346 | JDIMENSION num_cols = cinfo->output_width; |
DRC | 1e32fe3 | 2015-10-14 17:32:39 -0500 | [diff] [blame^] | 347 | JLONG d0 = dither_matrix[cinfo->output_scanline & DITHER_MASK]; |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 348 | |
| 349 | while (--num_rows >= 0) { |
DRC | 1e32fe3 | 2015-10-14 17:32:39 -0500 | [diff] [blame^] | 350 | JLONG rgb; |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 351 | unsigned int g; |
| 352 | |
| 353 | inptr = input_buf[0][input_row++]; |
| 354 | outptr = *output_buf++; |
| 355 | if (PACK_NEED_ALIGNMENT(outptr)) { |
| 356 | g = *inptr++; |
| 357 | g = range_limit[DITHER_565_R(g, d0)]; |
| 358 | rgb = PACK_SHORT_565(g, g, g); |
| 359 | *(INT16*)outptr = rgb; |
| 360 | outptr += 2; |
| 361 | num_cols--; |
| 362 | } |
| 363 | for (col = 0; col < (num_cols >> 1); col++) { |
| 364 | g = *inptr++; |
| 365 | g = range_limit[DITHER_565_R(g, d0)]; |
| 366 | rgb = PACK_SHORT_565(g, g, g); |
| 367 | d0 = DITHER_ROTATE(d0); |
| 368 | |
| 369 | g = *inptr++; |
| 370 | g = range_limit[DITHER_565_R(g, d0)]; |
| 371 | rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(g, g, g)); |
| 372 | d0 = DITHER_ROTATE(d0); |
| 373 | |
| 374 | WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); |
| 375 | outptr += 4; |
| 376 | } |
| 377 | if (num_cols & 1) { |
| 378 | g = *inptr; |
| 379 | g = range_limit[DITHER_565_R(g, d0)]; |
| 380 | rgb = PACK_SHORT_565(g, g, g); |
| 381 | *(INT16*)outptr = rgb; |
| 382 | } |
| 383 | } |
| 384 | } |