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Revision 433 - (view) (download)
| 1 : | chl | 433 | /***************************************************************************** |
| 2 : | edgomez | 195 | * |
| 3 : | chl | 433 | * XVID MPEG-4 VIDEO CODEC |
| 4 : | * - colorspace conversion module - | ||
| 5 : | edgomez | 195 | * |
| 6 : | chl | 433 | * Copyright(C) 2002 Peter Ross <pross@xvid.org> |
| 7 : | edgomez | 195 | * |
| 8 : | chl | 433 | * This program is an implementation of a part of one or more MPEG-4 |
| 9 : | * Video tools as specified in ISO/IEC 14496-2 standard. Those intending | ||
| 10 : | * to use this software module in hardware or software products are | ||
| 11 : | * advised that its use may infringe existing patents or copyrights, and | ||
| 12 : | * any such use would be at such party's own risk. The original | ||
| 13 : | * developer of this software module and his/her company, and subsequent | ||
| 14 : | * editors and their companies, will have no liability for use of this | ||
| 15 : | * software or modifications or derivatives thereof. | ||
| 16 : | edgomez | 195 | * |
| 17 : | chl | 433 | * This program is free software; you can redistribute it and/or modify |
| 18 : | * it under the terms of the GNU General Public License as published by | ||
| 19 : | * the Free Software Foundation; either version 2 of the License, or | ||
| 20 : | * (at your option) any later version. | ||
| 21 : | edgomez | 195 | * |
| 22 : | chl | 433 | * This program is distributed in the hope that it will be useful, |
| 23 : | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 24 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 25 : | * GNU General Public License for more details. | ||
| 26 : | edgomez | 195 | * |
| 27 : | chl | 433 | * You should have received a copy of the GNU General Public License |
| 28 : | * along with this program; if not, write to the Free Software | ||
| 29 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 30 : | edgomez | 195 | * |
| 31 : | chl | 433 | ****************************************************************************/ |
| 32 : | edgomez | 195 | |
| 33 : | #include <string.h> // memcpy | ||
| 34 : | |||
| 35 : | #include "colorspace.h" | ||
| 36 : | #include "../divx4.h" // DEC_PICTURE | ||
| 37 : | |||
| 38 : | // function pointers | ||
| 39 : | |||
| 40 : | /* input */ | ||
| 41 : | color_inputFuncPtr rgb555_to_yv12; | ||
| 42 : | color_inputFuncPtr rgb565_to_yv12; | ||
| 43 : | color_inputFuncPtr rgb24_to_yv12; | ||
| 44 : | color_inputFuncPtr rgb32_to_yv12; | ||
| 45 : | color_inputFuncPtr yuv_to_yv12; | ||
| 46 : | color_inputFuncPtr yuyv_to_yv12; | ||
| 47 : | color_inputFuncPtr uyvy_to_yv12; | ||
| 48 : | |||
| 49 : | /* output */ | ||
| 50 : | color_outputFuncPtr yv12_to_rgb555; | ||
| 51 : | color_outputFuncPtr yv12_to_rgb565; | ||
| 52 : | color_outputFuncPtr yv12_to_rgb24; | ||
| 53 : | color_outputFuncPtr yv12_to_rgb32; | ||
| 54 : | color_outputFuncPtr yv12_to_yuv; | ||
| 55 : | color_outputFuncPtr yv12_to_yuyv; | ||
| 56 : | color_outputFuncPtr yv12_to_uyvy; | ||
| 57 : | |||
| 58 : | #define MIN(A,B) ((A)<(B)?(A):(B)) | ||
| 59 : | #define MAX(A,B) ((A)>(B)?(A):(B)) | ||
| 60 : | |||
| 61 : | /* rgb -> yuv def's | ||
| 62 : | |||
| 63 : | this following constants are "official spec" | ||
| 64 : | Video Demystified" (ISBN 1-878707-09-4) | ||
| 65 : | |||
| 66 : | rgb<->yuv _is_ lossy, since most programs do the conversion differently | ||
| 67 : | |||
| 68 : | SCALEBITS/FIX taken from ffmpeg | ||
| 69 : | */ | ||
| 70 : | |||
| 71 : | #define Y_R_IN 0.257 | ||
| 72 : | #define Y_G_IN 0.504 | ||
| 73 : | #define Y_B_IN 0.098 | ||
| 74 : | #define Y_ADD_IN 16 | ||
| 75 : | |||
| 76 : | #define U_R_IN 0.148 | ||
| 77 : | #define U_G_IN 0.291 | ||
| 78 : | #define U_B_IN 0.439 | ||
| 79 : | #define U_ADD_IN 128 | ||
| 80 : | |||
| 81 : | #define V_R_IN 0.439 | ||
| 82 : | #define V_G_IN 0.368 | ||
| 83 : | #define V_B_IN 0.071 | ||
| 84 : | #define V_ADD_IN 128 | ||
| 85 : | |||
| 86 : | #define SCALEBITS_IN 8 | ||
| 87 : | #define FIX_IN(x) ((uint16_t) ((x) * (1L<<SCALEBITS_IN) + 0.5)) | ||
| 88 : | |||
| 89 : | |||
| 90 : | int32_t RGB_Y_tab[256]; | ||
| 91 : | int32_t B_U_tab[256]; | ||
| 92 : | int32_t G_U_tab[256]; | ||
| 93 : | int32_t G_V_tab[256]; | ||
| 94 : | int32_t R_V_tab[256]; | ||
| 95 : | |||
| 96 : | |||
| 97 : | /* rgb555 -> yuv 4:2:0 planar */ | ||
| 98 : | void | ||
| 99 : | rgb555_to_yv12_c(uint8_t * y_out, | ||
| 100 : | uint8_t * u_out, | ||
| 101 : | uint8_t * v_out, | ||
| 102 : | uint8_t * src, | ||
| 103 : | int width, | ||
| 104 : | int height, | ||
| 105 : | int y_stride) | ||
| 106 : | { | ||
| 107 : | int32_t src_stride = width * 2; | ||
| 108 : | uint32_t y_dif = y_stride - width; | ||
| 109 : | uint32_t uv_dif = (y_stride - width) / 2; | ||
| 110 : | uint32_t x, y; | ||
| 111 : | |||
| 112 : | if (height < 0) { | ||
| 113 : | height = -height; | ||
| 114 : | src += (height - 1) * src_stride; | ||
| 115 : | src_stride = -src_stride; | ||
| 116 : | } | ||
| 117 : | |||
| 118 : | |||
| 119 : | for (y = height / 2; y; y--) { | ||
| 120 : | // process one 2x2 block per iteration | ||
| 121 : | for (x = 0; x < (uint32_t) width; x += 2) { | ||
| 122 : | int rgb, r, g, b, r4, g4, b4; | ||
| 123 : | |||
| 124 : | rgb = *(uint16_t *) (src + x * 2); | ||
| 125 : | b4 = b = (rgb << 3) & 0xf8; | ||
| 126 : | g4 = g = (rgb >> 2) & 0xf8; | ||
| 127 : | r4 = r = (rgb >> 7) & 0xf8; | ||
| 128 : | y_out[0] = | ||
| 129 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 130 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 131 : | |||
| 132 : | rgb = *(uint16_t *) (src + x * 2 + src_stride); | ||
| 133 : | b4 += b = (rgb << 3) & 0xf8; | ||
| 134 : | g4 += g = (rgb >> 2) & 0xf8; | ||
| 135 : | r4 += r = (rgb >> 7) & 0xf8; | ||
| 136 : | y_out[y_stride] = | ||
| 137 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 138 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 139 : | |||
| 140 : | rgb = *(uint16_t *) (src + x * 2 + 2); | ||
| 141 : | b4 += b = (rgb << 3) & 0xf8; | ||
| 142 : | g4 += g = (rgb >> 2) & 0xf8; | ||
| 143 : | r4 += r = (rgb >> 7) & 0xf8; | ||
| 144 : | y_out[1] = | ||
| 145 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 146 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 147 : | |||
| 148 : | rgb = *(uint16_t *) (src + x * 2 + src_stride + 2); | ||
| 149 : | b4 += b = (rgb << 3) & 0xf8; | ||
| 150 : | g4 += g = (rgb >> 2) & 0xf8; | ||
| 151 : | r4 += r = (rgb >> 7) & 0xf8; | ||
| 152 : | y_out[y_stride + 1] = | ||
| 153 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 154 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 155 : | |||
| 156 : | *u_out++ = | ||
| 157 : | (uint8_t) ((-FIX_IN(U_R_IN) * r4 - FIX_IN(U_G_IN) * g4 + | ||
| 158 : | FIX_IN(U_B_IN) * b4) >> (SCALEBITS_IN + 2)) + | ||
| 159 : | U_ADD_IN; | ||
| 160 : | |||
| 161 : | |||
| 162 : | *v_out++ = | ||
| 163 : | (uint8_t) ((FIX_IN(V_R_IN) * r4 - FIX_IN(V_G_IN) * g4 - | ||
| 164 : | FIX_IN(V_B_IN) * b4) >> (SCALEBITS_IN + 2)) + | ||
| 165 : | V_ADD_IN; | ||
| 166 : | |||
| 167 : | y_out += 2; | ||
| 168 : | } | ||
| 169 : | src += src_stride * 2; | ||
| 170 : | y_out += y_dif + y_stride; | ||
| 171 : | u_out += uv_dif; | ||
| 172 : | v_out += uv_dif; | ||
| 173 : | } | ||
| 174 : | } | ||
| 175 : | |||
| 176 : | |||
| 177 : | |||
| 178 : | /* rgb565_to_yuv_c | ||
| 179 : | NOTE: identical to rgb555 except for shift/mask | ||
| 180 : | not tested */ | ||
| 181 : | |||
| 182 : | void | ||
| 183 : | rgb565_to_yv12_c(uint8_t * y_out, | ||
| 184 : | uint8_t * u_out, | ||
| 185 : | uint8_t * v_out, | ||
| 186 : | uint8_t * src, | ||
| 187 : | int width, | ||
| 188 : | int height, | ||
| 189 : | int y_stride) | ||
| 190 : | { | ||
| 191 : | int32_t src_stride = width * 2; | ||
| 192 : | |||
| 193 : | uint32_t y_dif = y_stride - width; | ||
| 194 : | uint32_t uv_dif = (y_stride - width) / 2; | ||
| 195 : | uint32_t x, y; | ||
| 196 : | |||
| 197 : | if (height < 0) { | ||
| 198 : | height = -height; | ||
| 199 : | src += (height - 1) * src_stride; | ||
| 200 : | src_stride = -src_stride; | ||
| 201 : | } | ||
| 202 : | |||
| 203 : | |||
| 204 : | for (y = height / 2; y; y--) { | ||
| 205 : | // process one 2x2 block per iteration | ||
| 206 : | for (x = 0; x < (uint32_t) width; x += 2) { | ||
| 207 : | int rgb, r, g, b, r4, g4, b4; | ||
| 208 : | |||
| 209 : | rgb = *(uint16_t *) (src + x * 2); | ||
| 210 : | b4 = b = (rgb << 3) & 0xf8; | ||
| 211 : | g4 = g = (rgb >> 3) & 0xfc; | ||
| 212 : | r4 = r = (rgb >> 8) & 0xf8; | ||
| 213 : | y_out[0] = | ||
| 214 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 215 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 216 : | |||
| 217 : | rgb = *(uint16_t *) (src + x * 2 + src_stride); | ||
| 218 : | b4 += b = (rgb << 3) & 0xf8; | ||
| 219 : | g4 += g = (rgb >> 3) & 0xfc; | ||
| 220 : | r4 += r = (rgb >> 8) & 0xf8; | ||
| 221 : | y_out[y_stride] = | ||
| 222 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 223 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 224 : | |||
| 225 : | rgb = *(uint16_t *) (src + x * 2 + 2); | ||
| 226 : | b4 += b = (rgb << 3) & 0xf8; | ||
| 227 : | g4 += g = (rgb >> 3) & 0xfc; | ||
| 228 : | r4 += r = (rgb >> 8) & 0xf8; | ||
| 229 : | y_out[1] = | ||
| 230 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 231 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 232 : | |||
| 233 : | rgb = *(uint16_t *) (src + x * 2 + src_stride + 2); | ||
| 234 : | b4 += b = (rgb << 3) & 0xf8; | ||
| 235 : | g4 += g = (rgb >> 3) & 0xfc; | ||
| 236 : | r4 += r = (rgb >> 8) & 0xf8; | ||
| 237 : | y_out[y_stride + 1] = | ||
| 238 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 239 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 240 : | |||
| 241 : | *u_out++ = | ||
| 242 : | (uint8_t) ((-FIX_IN(U_R_IN) * r4 - FIX_IN(U_G_IN) * g4 + | ||
| 243 : | FIX_IN(U_B_IN) * b4) >> (SCALEBITS_IN + 2)) + | ||
| 244 : | U_ADD_IN; | ||
| 245 : | |||
| 246 : | |||
| 247 : | *v_out++ = | ||
| 248 : | (uint8_t) ((FIX_IN(V_R_IN) * r4 - FIX_IN(V_G_IN) * g4 - | ||
| 249 : | FIX_IN(V_B_IN) * b4) >> (SCALEBITS_IN + 2)) + | ||
| 250 : | V_ADD_IN; | ||
| 251 : | |||
| 252 : | y_out += 2; | ||
| 253 : | } | ||
| 254 : | src += src_stride * 2; | ||
| 255 : | y_out += y_dif + y_stride; | ||
| 256 : | u_out += uv_dif; | ||
| 257 : | v_out += uv_dif; | ||
| 258 : | } | ||
| 259 : | } | ||
| 260 : | |||
| 261 : | |||
| 262 : | |||
| 263 : | |||
| 264 : | /* rgb24 -> yuv 4:2:0 planar | ||
| 265 : | |||
| 266 : | NOTE: always flips. | ||
| 267 : | */ | ||
| 268 : | |||
| 269 : | void | ||
| 270 : | rgb24_to_yv12_c(uint8_t * y_out, | ||
| 271 : | uint8_t * u_out, | ||
| 272 : | uint8_t * v_out, | ||
| 273 : | uint8_t * src, | ||
| 274 : | int width, | ||
| 275 : | int height, | ||
| 276 : | int stride) | ||
| 277 : | { | ||
| 278 : | uint32_t width3 = (width << 1) + width; /* width * 3 */ | ||
| 279 : | uint32_t src_dif = (width << 3) + width; /* width3 * 3 */ | ||
| 280 : | uint32_t y_dif = (stride << 1) - width; | ||
| 281 : | uint32_t uv_dif = (stride - width) >> 1; | ||
| 282 : | uint32_t x, y; | ||
| 283 : | |||
| 284 : | src += (height - 2) * width3; | ||
| 285 : | |||
| 286 : | |||
| 287 : | for (y = height >> 1; y; y--) { | ||
| 288 : | for (x = width >> 1; x; x--) { | ||
| 289 : | uint32_t r, g, b, r4, g4, b4; | ||
| 290 : | |||
| 291 : | b4 = b = src[0]; | ||
| 292 : | g4 = g = src[1]; | ||
| 293 : | r4 = r = src[2]; | ||
| 294 : | y_out[stride + 0] = | ||
| 295 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 296 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 297 : | |||
| 298 : | b4 += (b = src[3]); | ||
| 299 : | g4 += (g = src[4]); | ||
| 300 : | r4 += (r = src[5]); | ||
| 301 : | y_out[stride + 1] = | ||
| 302 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 303 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 304 : | |||
| 305 : | b4 += (b = src[width3 + 0]); | ||
| 306 : | g4 += (g = src[width3 + 1]); | ||
| 307 : | r4 += (r = src[width3 + 2]); | ||
| 308 : | y_out[0] = | ||
| 309 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 310 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 311 : | |||
| 312 : | b4 += (b = src[width3 + 3]); | ||
| 313 : | g4 += (g = src[width3 + 4]); | ||
| 314 : | r4 += (r = src[width3 + 5]); | ||
| 315 : | y_out[1] = | ||
| 316 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 317 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 318 : | |||
| 319 : | *u_out++ = | ||
| 320 : | (uint8_t) ((-FIX_IN(U_R_IN) * r4 - FIX_IN(U_G_IN) * g4 + | ||
| 321 : | FIX_IN(U_B_IN) * b4) >> (SCALEBITS_IN + 2)) + | ||
| 322 : | U_ADD_IN; | ||
| 323 : | |||
| 324 : | |||
| 325 : | *v_out++ = | ||
| 326 : | (uint8_t) ((FIX_IN(V_R_IN) * r4 - FIX_IN(V_G_IN) * g4 - | ||
| 327 : | FIX_IN(V_B_IN) * b4) >> (SCALEBITS_IN + 2)) + | ||
| 328 : | V_ADD_IN; | ||
| 329 : | |||
| 330 : | |||
| 331 : | src += 6; | ||
| 332 : | y_out += 2; | ||
| 333 : | } | ||
| 334 : | src -= src_dif; | ||
| 335 : | y_out += y_dif; | ||
| 336 : | u_out += uv_dif; | ||
| 337 : | v_out += uv_dif; | ||
| 338 : | } | ||
| 339 : | } | ||
| 340 : | |||
| 341 : | |||
| 342 : | /* rgb32 -> yuv 4:2:0 planar | ||
| 343 : | |||
| 344 : | NOTE: always flips | ||
| 345 : | */ | ||
| 346 : | |||
| 347 : | void | ||
| 348 : | rgb32_to_yv12_c(uint8_t * y_out, | ||
| 349 : | uint8_t * u_out, | ||
| 350 : | uint8_t * v_out, | ||
| 351 : | uint8_t * src, | ||
| 352 : | int width, | ||
| 353 : | int height, | ||
| 354 : | int stride) | ||
| 355 : | { | ||
| 356 : | uint32_t width4 = (width << 2); /* width * 4 */ | ||
| 357 : | uint32_t src_dif = 3 * width4; | ||
| 358 : | uint32_t y_dif = (stride << 1) - width; | ||
| 359 : | uint32_t uv_dif = (stride - width) >> 1; | ||
| 360 : | uint32_t x, y; | ||
| 361 : | |||
| 362 : | src += (height - 2) * width4; | ||
| 363 : | |||
| 364 : | for (y = height >> 1; y; y--) { | ||
| 365 : | for (x = width >> 1; x; x--) { | ||
| 366 : | uint32_t r, g, b, r4, g4, b4; | ||
| 367 : | |||
| 368 : | b4 = b = src[0]; | ||
| 369 : | g4 = g = src[1]; | ||
| 370 : | r4 = r = src[2]; | ||
| 371 : | y_out[stride + 0] = | ||
| 372 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 373 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 374 : | |||
| 375 : | b4 += (b = src[4]); | ||
| 376 : | g4 += (g = src[5]); | ||
| 377 : | r4 += (r = src[6]); | ||
| 378 : | y_out[stride + 1] = | ||
| 379 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 380 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 381 : | |||
| 382 : | b4 += (b = src[width4 + 0]); | ||
| 383 : | g4 += (g = src[width4 + 1]); | ||
| 384 : | r4 += (r = src[width4 + 2]); | ||
| 385 : | |||
| 386 : | y_out[0] = | ||
| 387 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 388 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 389 : | |||
| 390 : | b4 += (b = src[width4 + 4]); | ||
| 391 : | g4 += (g = src[width4 + 5]); | ||
| 392 : | r4 += (r = src[width4 + 6]); | ||
| 393 : | y_out[1] = | ||
| 394 : | (uint8_t) ((FIX_IN(Y_R_IN) * r + FIX_IN(Y_G_IN) * g + | ||
| 395 : | FIX_IN(Y_B_IN) * b) >> SCALEBITS_IN) + Y_ADD_IN; | ||
| 396 : | |||
| 397 : | *u_out++ = | ||
| 398 : | (uint8_t) ((-FIX_IN(U_R_IN) * r4 - FIX_IN(U_G_IN) * g4 + | ||
| 399 : | FIX_IN(U_B_IN) * b4) >> (SCALEBITS_IN + 2)) + | ||
| 400 : | U_ADD_IN; | ||
| 401 : | |||
| 402 : | *v_out++ = | ||
| 403 : | (uint8_t) ((FIX_IN(V_R_IN) * r4 - FIX_IN(V_G_IN) * g4 - | ||
| 404 : | FIX_IN(V_B_IN) * b4) >> (SCALEBITS_IN + 2)) + | ||
| 405 : | V_ADD_IN; | ||
| 406 : | |||
| 407 : | src += 8; | ||
| 408 : | y_out += 2; | ||
| 409 : | } | ||
| 410 : | src -= src_dif; | ||
| 411 : | y_out += y_dif; | ||
| 412 : | u_out += uv_dif; | ||
| 413 : | v_out += uv_dif; | ||
| 414 : | } | ||
| 415 : | } | ||
| 416 : | |||
| 417 : | /* yuv planar -> yuv 4:2:0 planar | ||
| 418 : | |||
| 419 : | NOTE: does not flip */ | ||
| 420 : | |||
| 421 : | void | ||
| 422 : | yuv_to_yv12_c(uint8_t * y_out, | ||
| 423 : | uint8_t * u_out, | ||
| 424 : | uint8_t * v_out, | ||
| 425 : | uint8_t * src, | ||
| 426 : | int width, | ||
| 427 : | int height, | ||
| 428 : | int stride) | ||
| 429 : | { | ||
| 430 : | uint32_t stride2 = stride >> 1; | ||
| 431 : | uint32_t width2 = width >> 1; | ||
| 432 : | uint32_t y; | ||
| 433 : | |||
| 434 : | for (y = height; y; y--) { | ||
| 435 : | memcpy(y_out, src, width); | ||
| 436 : | src += width; | ||
| 437 : | y_out += stride; | ||
| 438 : | } | ||
| 439 : | |||
| 440 : | for (y = height >> 1; y; y--) { | ||
| 441 : | memcpy(u_out, src, width2); | ||
| 442 : | src += width2; | ||
| 443 : | u_out += stride2; | ||
| 444 : | } | ||
| 445 : | |||
| 446 : | for (y = height >> 1; y; y--) { | ||
| 447 : | memcpy(v_out, src, width2); | ||
| 448 : | src += width2; | ||
| 449 : | v_out += stride2; | ||
| 450 : | } | ||
| 451 : | } | ||
| 452 : | |||
| 453 : | |||
| 454 : | |||
| 455 : | /* yuyv (yuv2) packed -> yuv 4:2:0 planar | ||
| 456 : | |||
| 457 : | NOTE: does not flip */ | ||
| 458 : | |||
| 459 : | void | ||
| 460 : | yuyv_to_yv12_c(uint8_t * y_out, | ||
| 461 : | uint8_t * u_out, | ||
| 462 : | uint8_t * v_out, | ||
| 463 : | uint8_t * src, | ||
| 464 : | int width, | ||
| 465 : | int height, | ||
| 466 : | int stride) | ||
| 467 : | { | ||
| 468 : | uint32_t width2 = width + width; | ||
| 469 : | uint32_t y_dif = stride - width; | ||
| 470 : | uint32_t uv_dif = y_dif >> 1; | ||
| 471 : | uint32_t x, y; | ||
| 472 : | |||
| 473 : | for (y = height >> 1; y; y--) { | ||
| 474 : | |||
| 475 : | for (x = width >> 1; x; x--) { | ||
| 476 : | *y_out++ = *src++; | ||
| 477 : | //*u_out++ = *src++; | ||
| 478 : | *u_out++ = (*(src + width2) + *src) >> 1; | ||
| 479 : | src++; | ||
| 480 : | *y_out++ = *src++; | ||
| 481 : | //*v_out++ = *src++; | ||
| 482 : | *v_out++ = (*(src + width2) + *src) >> 1; | ||
| 483 : | src++; | ||
| 484 : | |||
| 485 : | } | ||
| 486 : | |||
| 487 : | y_out += y_dif; | ||
| 488 : | u_out += uv_dif; | ||
| 489 : | v_out += uv_dif; | ||
| 490 : | |||
| 491 : | for (x = width >> 1; x; x--) { | ||
| 492 : | *y_out++ = *src++; | ||
| 493 : | src++; | ||
| 494 : | *y_out++ = *src++; | ||
| 495 : | src++; | ||
| 496 : | } | ||
| 497 : | |||
| 498 : | y_out += y_dif; | ||
| 499 : | |||
| 500 : | } | ||
| 501 : | |||
| 502 : | } | ||
| 503 : | |||
| 504 : | |||
| 505 : | |||
| 506 : | /* uyvy packed -> yuv 4:2:0 planar | ||
| 507 : | |||
| 508 : | NOTE: does not flip */ | ||
| 509 : | |||
| 510 : | |||
| 511 : | void | ||
| 512 : | uyvy_to_yv12_c(uint8_t * y_out, | ||
| 513 : | uint8_t * u_out, | ||
| 514 : | uint8_t * v_out, | ||
| 515 : | uint8_t * src, | ||
| 516 : | int width, | ||
| 517 : | int height, | ||
| 518 : | int stride) | ||
| 519 : | { | ||
| 520 : | uint32_t width2 = width + width; | ||
| 521 : | uint32_t y_dif = stride - width; | ||
| 522 : | uint32_t uv_dif = y_dif >> 1; | ||
| 523 : | uint32_t x, y; | ||
| 524 : | |||
| 525 : | for (y = height >> 1; y; y--) { | ||
| 526 : | |||
| 527 : | for (x = width >> 1; x; x--) { | ||
| 528 : | *u_out++ = *src++; | ||
| 529 : | // *u_out++ = (*(src+width2) + *src++) >> 1; | ||
| 530 : | *y_out++ = *src++; | ||
| 531 : | //*v_out++ = *src++; | ||
| 532 : | *v_out++ = (*(src + width2) + *src) >> 1; | ||
| 533 : | src++; | ||
| 534 : | *y_out++ = *src++; | ||
| 535 : | } | ||
| 536 : | |||
| 537 : | y_out += y_dif; | ||
| 538 : | u_out += uv_dif;; | ||
| 539 : | v_out += uv_dif;; | ||
| 540 : | |||
| 541 : | for (x = width >> 1; x; x--) { | ||
| 542 : | src++; | ||
| 543 : | *y_out++ = *src++; | ||
| 544 : | src++; | ||
| 545 : | *y_out++ = *src++; | ||
| 546 : | } | ||
| 547 : | |||
| 548 : | y_out += y_dif; | ||
| 549 : | } | ||
| 550 : | } | ||
| 551 : | |||
| 552 : | |||
| 553 : | /* yuv -> rgb def's */ | ||
| 554 : | |||
| 555 : | #define RGB_Y_OUT 1.164 | ||
| 556 : | #define B_U_OUT 2.018 | ||
| 557 : | #define Y_ADD_OUT 16 | ||
| 558 : | |||
| 559 : | #define G_U_OUT 0.391 | ||
| 560 : | #define G_V_OUT 0.813 | ||
| 561 : | #define U_ADD_OUT 128 | ||
| 562 : | |||
| 563 : | #define R_V_OUT 1.596 | ||
| 564 : | #define V_ADD_OUT 128 | ||
| 565 : | |||
| 566 : | |||
| 567 : | #define SCALEBITS_OUT 13 | ||
| 568 : | #define FIX_OUT(x) ((uint16_t) ((x) * (1L<<SCALEBITS_OUT) + 0.5)) | ||
| 569 : | |||
| 570 : | |||
| 571 : | /* initialize rgb lookup tables */ | ||
| 572 : | |||
| 573 : | void | ||
| 574 : | colorspace_init(void) | ||
| 575 : | { | ||
| 576 : | int32_t i; | ||
| 577 : | |||
| 578 : | for (i = 0; i < 256; i++) { | ||
| 579 : | RGB_Y_tab[i] = FIX_OUT(RGB_Y_OUT) * (i - Y_ADD_OUT); | ||
| 580 : | B_U_tab[i] = FIX_OUT(B_U_OUT) * (i - U_ADD_OUT); | ||
| 581 : | G_U_tab[i] = FIX_OUT(G_U_OUT) * (i - U_ADD_OUT); | ||
| 582 : | G_V_tab[i] = FIX_OUT(G_V_OUT) * (i - V_ADD_OUT); | ||
| 583 : | R_V_tab[i] = FIX_OUT(R_V_OUT) * (i - V_ADD_OUT); | ||
| 584 : | } | ||
| 585 : | } | ||
| 586 : | |||
| 587 : | /* yuv 4:2:0 planar -> rgb555 + very simple error diffusion | ||
| 588 : | */ | ||
| 589 : | |||
| 590 : | #define MK_RGB555(R,G,B) ((MAX(0,MIN(255, R)) << 7) & 0x7c00) | \ | ||
| 591 : | ((MAX(0,MIN(255, G)) << 2) & 0x03e0) | \ | ||
| 592 : | ((MAX(0,MIN(255, B)) >> 3) & 0x001f) | ||
| 593 : | |||
| 594 : | |||
| 595 : | void | ||
| 596 : | yv12_to_rgb555_c(uint8_t * dst, | ||
| 597 : | int dst_stride, | ||
| 598 : | uint8_t * y_src, | ||
| 599 : | uint8_t * u_src, | ||
| 600 : | uint8_t * v_src, | ||
| 601 : | int y_stride, | ||
| 602 : | int uv_stride, | ||
| 603 : | int width, | ||
| 604 : | int height) | ||
| 605 : | { | ||
| 606 : | const uint32_t dst_dif = 4 * dst_stride - 2 * width; | ||
| 607 : | int32_t y_dif = 2 * y_stride - width; | ||
| 608 : | |||
| 609 : | uint8_t *dst2 = dst + 2 * dst_stride; | ||
| 610 : | uint8_t *y_src2 = y_src + y_stride; | ||
| 611 : | uint32_t x, y; | ||
| 612 : | |||
| 613 : | if (height < 0) { | ||
| 614 : | height = -height; | ||
| 615 : | y_src += (height - 1) * y_stride; | ||
| 616 : | y_src2 = y_src - y_stride; | ||
| 617 : | u_src += (height / 2 - 1) * uv_stride; | ||
| 618 : | v_src += (height / 2 - 1) * uv_stride; | ||
| 619 : | y_dif = -width - 2 * y_stride; | ||
| 620 : | uv_stride = -uv_stride; | ||
| 621 : | } | ||
| 622 : | |||
| 623 : | for (y = height / 2; y; y--) { | ||
| 624 : | int r, g, b; | ||
| 625 : | int r2, g2, b2; | ||
| 626 : | |||
| 627 : | r = g = b = 0; | ||
| 628 : | r2 = g2 = b2 = 0; | ||
| 629 : | |||
| 630 : | // process one 2x2 block per iteration | ||
| 631 : | for (x = 0; x < (uint32_t) width / 2; x++) { | ||
| 632 : | int u, v; | ||
| 633 : | int b_u, g_uv, r_v, rgb_y; | ||
| 634 : | |||
| 635 : | u = u_src[x]; | ||
| 636 : | v = v_src[x]; | ||
| 637 : | |||
| 638 : | b_u = B_U_tab[u]; | ||
| 639 : | g_uv = G_U_tab[u] + G_V_tab[v]; | ||
| 640 : | r_v = R_V_tab[v]; | ||
| 641 : | |||
| 642 : | rgb_y = RGB_Y_tab[*y_src]; | ||
| 643 : | b = (b & 0x7) + ((rgb_y + b_u) >> SCALEBITS_OUT); | ||
| 644 : | g = (g & 0x7) + ((rgb_y - g_uv) >> SCALEBITS_OUT); | ||
| 645 : | r = (r & 0x7) + ((rgb_y + r_v) >> SCALEBITS_OUT); | ||
| 646 : | *(uint16_t *) dst = MK_RGB555(r, g, b); | ||
| 647 : | |||
| 648 : | y_src++; | ||
| 649 : | rgb_y = RGB_Y_tab[*y_src]; | ||
| 650 : | b = (b & 0x7) + ((rgb_y + b_u) >> SCALEBITS_OUT); | ||
| 651 : | g = (g & 0x7) + ((rgb_y - g_uv) >> SCALEBITS_OUT); | ||
| 652 : | r = (r & 0x7) + ((rgb_y + r_v) >> SCALEBITS_OUT); | ||
| 653 : | *(uint16_t *) (dst + 2) = MK_RGB555(r, g, b); | ||
| 654 : | y_src++; | ||
| 655 : | |||
| 656 : | rgb_y = RGB_Y_tab[*y_src2]; | ||
| 657 : | b2 = (b2 & 0x7) + ((rgb_y + b_u) >> SCALEBITS_OUT); | ||
| 658 : | g2 = (g2 & 0x7) + ((rgb_y - g_uv) >> SCALEBITS_OUT); | ||
| 659 : | r2 = (r2 & 0x7) + ((rgb_y + r_v) >> SCALEBITS_OUT); | ||
| 660 : | *(uint16_t *) (dst2) = MK_RGB555(r2, g2, b2); | ||
| 661 : | y_src2++; | ||
| 662 : | |||
| 663 : | rgb_y = RGB_Y_tab[*y_src2]; | ||
| 664 : | b2 = (b2 & 0x7) + ((rgb_y + b_u) >> SCALEBITS_OUT); | ||
| 665 : | g2 = (g2 & 0x7) + ((rgb_y - g_uv) >> SCALEBITS_OUT); | ||
| 666 : | r2 = (r2 & 0x7) + ((rgb_y + r_v) >> SCALEBITS_OUT); | ||
| 667 : | *(uint16_t *) (dst2 + 2) = MK_RGB555(r2, g2, b2); | ||
| 668 : | y_src2++; | ||
| 669 : | |||
| 670 : | dst += 4; | ||
| 671 : | dst2 += 4; | ||
| 672 : | } | ||
| 673 : | |||
| 674 : | dst += dst_dif; | ||
| 675 : | dst2 += dst_dif; | ||
| 676 : | |||
| 677 : | y_src += y_dif; | ||
| 678 : | y_src2 += y_dif; | ||
| 679 : | |||
| 680 : | u_src += uv_stride; | ||
| 681 : | v_src += uv_stride; | ||
| 682 : | } | ||
| 683 : | } | ||
| 684 : | |||
| 685 : | |||
| 686 : | /* yuv 4:2:0 planar -> rgb565 + very simple error diffusion | ||
| 687 : | NOTE: identical to rgb555 except for shift/mask */ | ||
| 688 : | |||
| 689 : | |||
| 690 : | #define MK_RGB565(R,G,B) ((MAX(0,MIN(255, R)) << 8) & 0xf800) | \ | ||
| 691 : | ((MAX(0,MIN(255, G)) << 3) & 0x07e0) | \ | ||
| 692 : | ((MAX(0,MIN(255, B)) >> 3) & 0x001f) | ||
| 693 : | |||
| 694 : | void | ||
| 695 : | yv12_to_rgb565_c(uint8_t * dst, | ||
| 696 : | int dst_stride, | ||
| 697 : | uint8_t * y_src, | ||
| 698 : | uint8_t * u_src, | ||
| 699 : | uint8_t * v_src, | ||
| 700 : | int y_stride, | ||
| 701 : | int uv_stride, | ||
| 702 : | int width, | ||
| 703 : | int height) | ||
| 704 : | { | ||
| 705 : | const uint32_t dst_dif = 4 * dst_stride - 2 * width; | ||
| 706 : | int32_t y_dif = 2 * y_stride - width; | ||
| 707 : | |||
| 708 : | uint8_t *dst2 = dst + 2 * dst_stride; | ||
| 709 : | uint8_t *y_src2 = y_src + y_stride; | ||
| 710 : | uint32_t x, y; | ||
| 711 : | |||
| 712 : | if (height < 0) { // flip image? | ||
| 713 : | height = -height; | ||
| 714 : | y_src += (height - 1) * y_stride; | ||
| 715 : | y_src2 = y_src - y_stride; | ||
| 716 : | u_src += (height / 2 - 1) * uv_stride; | ||
| 717 : | v_src += (height / 2 - 1) * uv_stride; | ||
| 718 : | y_dif = -width - 2 * y_stride; | ||
| 719 : | uv_stride = -uv_stride; | ||
| 720 : | } | ||
| 721 : | |||
| 722 : | for (y = height / 2; y; y--) { | ||
| 723 : | int r, g, b; | ||
| 724 : | int r2, g2, b2; | ||
| 725 : | |||
| 726 : | r = g = b = 0; | ||
| 727 : | r2 = g2 = b2 = 0; | ||
| 728 : | |||
| 729 : | // process one 2x2 block per iteration | ||
| 730 : | for (x = 0; x < (uint32_t) width / 2; x++) { | ||
| 731 : | int u, v; | ||
| 732 : | int b_u, g_uv, r_v, rgb_y; | ||
| 733 : | |||
| 734 : | u = u_src[x]; | ||
| 735 : | v = v_src[x]; | ||
| 736 : | |||
| 737 : | b_u = B_U_tab[u]; | ||
| 738 : | g_uv = G_U_tab[u] + G_V_tab[v]; | ||
| 739 : | r_v = R_V_tab[v]; | ||
| 740 : | |||
| 741 : | rgb_y = RGB_Y_tab[*y_src]; | ||
| 742 : | b = (b & 0x7) + ((rgb_y + b_u) >> SCALEBITS_OUT); | ||
| 743 : | g = (g & 0x7) + ((rgb_y - g_uv) >> SCALEBITS_OUT); | ||
| 744 : | r = (r & 0x7) + ((rgb_y + r_v) >> SCALEBITS_OUT); | ||
| 745 : | *(uint16_t *) dst = MK_RGB565(r, g, b); | ||
| 746 : | |||
| 747 : | y_src++; | ||
| 748 : | rgb_y = RGB_Y_tab[*y_src]; | ||
| 749 : | b = (b & 0x7) + ((rgb_y + b_u) >> SCALEBITS_OUT); | ||
| 750 : | g = (g & 0x7) + ((rgb_y - g_uv) >> SCALEBITS_OUT); | ||
| 751 : | r = (r & 0x7) + ((rgb_y + r_v) >> SCALEBITS_OUT); | ||
| 752 : | *(uint16_t *) (dst + 2) = MK_RGB565(r, g, b); | ||
| 753 : | y_src++; | ||
| 754 : | |||
| 755 : | rgb_y = RGB_Y_tab[*y_src2]; | ||
| 756 : | b2 = (b2 & 0x7) + ((rgb_y + b_u) >> SCALEBITS_OUT); | ||
| 757 : | g2 = (g2 & 0x7) + ((rgb_y - g_uv) >> SCALEBITS_OUT); | ||
| 758 : | r2 = (r2 & 0x7) + ((rgb_y + r_v) >> SCALEBITS_OUT); | ||
| 759 : | *(uint16_t *) (dst2) = MK_RGB565(r2, g2, b2); | ||
| 760 : | y_src2++; | ||
| 761 : | |||
| 762 : | rgb_y = RGB_Y_tab[*y_src2]; | ||
| 763 : | b2 = (b2 & 0x7) + ((rgb_y + b_u) >> SCALEBITS_OUT); | ||
| 764 : | g2 = (g2 & 0x7) + ((rgb_y - g_uv) >> SCALEBITS_OUT); | ||
| 765 : | r2 = (r2 & 0x7) + ((rgb_y + r_v) >> SCALEBITS_OUT); | ||
| 766 : | *(uint16_t *) (dst2 + 2) = MK_RGB565(r2, g2, b2); | ||
| 767 : | y_src2++; | ||
| 768 : | |||
| 769 : | dst += 4; | ||
| 770 : | dst2 += 4; | ||
| 771 : | } | ||
| 772 : | |||
| 773 : | dst += dst_dif; | ||
| 774 : | dst2 += dst_dif; | ||
| 775 : | |||
| 776 : | y_src += y_dif; | ||
| 777 : | y_src2 += y_dif; | ||
| 778 : | |||
| 779 : | u_src += uv_stride; | ||
| 780 : | v_src += uv_stride; | ||
| 781 : | } | ||
| 782 : | } | ||
| 783 : | |||
| 784 : | |||
| 785 : | |||
| 786 : | /* yuv 4:2:0 planar -> rgb24 */ | ||
| 787 : | |||
| 788 : | void | ||
| 789 : | yv12_to_rgb24_c(uint8_t * dst, | ||
| 790 : | int dst_stride, | ||
| 791 : | uint8_t * y_src, | ||
| 792 : | uint8_t * u_src, | ||
| 793 : | uint8_t * v_src, | ||
| 794 : | int y_stride, | ||
| 795 : | int uv_stride, | ||
| 796 : | int width, | ||
| 797 : | int height) | ||
| 798 : | { | ||
| 799 : | const uint32_t dst_dif = 6 * dst_stride - 3 * width; | ||
| 800 : | int32_t y_dif = 2 * y_stride - width; | ||
| 801 : | |||
| 802 : | uint8_t *dst2 = dst + 3 * dst_stride; | ||
| 803 : | uint8_t *y_src2 = y_src + y_stride; | ||
| 804 : | uint32_t x, y; | ||
| 805 : | |||
| 806 : | if (height < 0) { // flip image? | ||
| 807 : | height = -height; | ||
| 808 : | y_src += (height - 1) * y_stride; | ||
| 809 : | y_src2 = y_src - y_stride; | ||
| 810 : | u_src += (height / 2 - 1) * uv_stride; | ||
| 811 : | v_src += (height / 2 - 1) * uv_stride; | ||
| 812 : | y_dif = -width - 2 * y_stride; | ||
| 813 : | uv_stride = -uv_stride; | ||
| 814 : | } | ||
| 815 : | |||
| 816 : | for (y = height / 2; y; y--) { | ||
| 817 : | // process one 2x2 block per iteration | ||
| 818 : | for (x = 0; x < (uint32_t) width / 2; x++) { | ||
| 819 : | int u, v; | ||
| 820 : | int b_u, g_uv, r_v, rgb_y; | ||
| 821 : | int r, g, b; | ||
| 822 : | |||
| 823 : | u = u_src[x]; | ||
| 824 : | v = v_src[x]; | ||
| 825 : | |||
| 826 : | b_u = B_U_tab[u]; | ||
| 827 : | g_uv = G_U_tab[u] + G_V_tab[v]; | ||
| 828 : | r_v = R_V_tab[v]; | ||
| 829 : | |||
| 830 : | rgb_y = RGB_Y_tab[*y_src]; | ||
| 831 : | b = (rgb_y + b_u) >> SCALEBITS_OUT; | ||
| 832 : | g = (rgb_y - g_uv) >> SCALEBITS_OUT; | ||
| 833 : | r = (rgb_y + r_v) >> SCALEBITS_OUT; | ||
| 834 : | dst[0] = MAX(0, MIN(255, b)); | ||
| 835 : | dst[1] = MAX(0, MIN(255, g)); | ||
| 836 : | dst[2] = MAX(0, MIN(255, r)); | ||
| 837 : | |||
| 838 : | y_src++; | ||
| 839 : | rgb_y = RGB_Y_tab[*y_src]; | ||
| 840 : | b = (rgb_y + b_u) >> SCALEBITS_OUT; | ||
| 841 : | g = (rgb_y - g_uv) >> SCALEBITS_OUT; | ||
| 842 : | r = (rgb_y + r_v) >> SCALEBITS_OUT; | ||
| 843 : | dst[3] = MAX(0, MIN(255, b)); | ||
| 844 : | dst[4] = MAX(0, MIN(255, g)); | ||
| 845 : | dst[5] = MAX(0, MIN(255, r)); | ||
| 846 : | y_src++; | ||
| 847 : | |||
| 848 : | rgb_y = RGB_Y_tab[*y_src2]; | ||
| 849 : | b = (rgb_y + b_u) >> SCALEBITS_OUT; | ||
| 850 : | g = (rgb_y - g_uv) >> SCALEBITS_OUT; | ||
| 851 : | r = (rgb_y + r_v) >> SCALEBITS_OUT; | ||
| 852 : | dst2[0] = MAX(0, MIN(255, b)); | ||
| 853 : | dst2[1] = MAX(0, MIN(255, g)); | ||
| 854 : | dst2[2] = MAX(0, MIN(255, r)); | ||
| 855 : | y_src2++; | ||
| 856 : | |||
| 857 : | rgb_y = RGB_Y_tab[*y_src2]; | ||
| 858 : | b = (rgb_y + b_u) >> SCALEBITS_OUT; | ||
| 859 : | g = (rgb_y - g_uv) >> SCALEBITS_OUT; | ||
| 860 : | r = (rgb_y + r_v) >> SCALEBITS_OUT; | ||
| 861 : | dst2[3] = MAX(0, MIN(255, b)); | ||
| 862 : | dst2[4] = MAX(0, MIN(255, g)); | ||
| 863 : | dst2[5] = MAX(0, MIN(255, r)); | ||
| 864 : | y_src2++; | ||
| 865 : | |||
| 866 : | dst += 6; | ||
| 867 : | dst2 += 6; | ||
| 868 : | } | ||
| 869 : | |||
| 870 : | dst += dst_dif; | ||
| 871 : | dst2 += dst_dif; | ||
| 872 : | |||
| 873 : | y_src += y_dif; | ||
| 874 : | y_src2 += y_dif; | ||
| 875 : | |||
| 876 : | u_src += uv_stride; | ||
| 877 : | v_src += uv_stride; | ||
| 878 : | } | ||
| 879 : | } | ||
| 880 : | |||
| 881 : | |||
| 882 : | |||
| 883 : | /* yuv 4:2:0 planar -> rgb32 */ | ||
| 884 : | |||
| 885 : | void | ||
| 886 : | yv12_to_rgb32_c(uint8_t * dst, | ||
| 887 : | int dst_stride, | ||
| 888 : | uint8_t * y_src, | ||
| 889 : | uint8_t * v_src, | ||
| 890 : | uint8_t * u_src, | ||
| 891 : | int y_stride, | ||
| 892 : | int uv_stride, | ||
| 893 : | int width, | ||
| 894 : | int height) | ||
| 895 : | { | ||
| 896 : | const uint32_t dst_dif = 8 * dst_stride - 4 * width; | ||
| 897 : | int32_t y_dif = 2 * y_stride - width; | ||
| 898 : | |||
| 899 : | uint8_t *dst2 = dst + 4 * dst_stride; | ||
| 900 : | uint8_t *y_src2 = y_src + y_stride; | ||
| 901 : | uint32_t x, y; | ||
| 902 : | |||
| 903 : | if (height < 0) { // flip image? | ||
| 904 : | height = -height; | ||
| 905 : | y_src += (height - 1) * y_stride; | ||
| 906 : | y_src2 = y_src - y_stride; | ||
| 907 : | u_src += (height / 2 - 1) * uv_stride; | ||
| 908 : | v_src += (height / 2 - 1) * uv_stride; | ||
| 909 : | y_dif = -width - 2 * y_stride; | ||
| 910 : | uv_stride = -uv_stride; | ||
| 911 : | } | ||
| 912 : | |||
| 913 : | for (y = height / 2; y; y--) { | ||
| 914 : | // process one 2x2 block per iteration | ||
| 915 : | for (x = 0; x < (uint32_t) width / 2; x++) { | ||
| 916 : | int u, v; | ||
| 917 : | int b_u, g_uv, r_v, rgb_y; | ||
| 918 : | int r, g, b; | ||
| 919 : | |||
| 920 : | u = u_src[x]; | ||
| 921 : | v = v_src[x]; | ||
| 922 : | |||
| 923 : | b_u = B_U_tab[u]; | ||
| 924 : | g_uv = G_U_tab[u] + G_V_tab[v]; | ||
| 925 : | r_v = R_V_tab[v]; | ||
| 926 : | |||
| 927 : | rgb_y = RGB_Y_tab[*y_src]; | ||
| 928 : | b = (rgb_y + b_u) >> SCALEBITS_OUT; | ||
| 929 : | g = (rgb_y - g_uv) >> SCALEBITS_OUT; | ||
| 930 : | r = (rgb_y + r_v) >> SCALEBITS_OUT; | ||
| 931 : | dst[0] = MAX(0, MIN(255, r)); | ||
| 932 : | dst[1] = MAX(0, MIN(255, g)); | ||
| 933 : | dst[2] = MAX(0, MIN(255, b)); | ||
| 934 : | dst[3] = 0; | ||
| 935 : | |||
| 936 : | y_src++; | ||
| 937 : | rgb_y = RGB_Y_tab[*y_src]; | ||
| 938 : | b = (rgb_y + b_u) >> SCALEBITS_OUT; | ||
| 939 : | g = (rgb_y - g_uv) >> SCALEBITS_OUT; | ||
| 940 : | r = (rgb_y + r_v) >> SCALEBITS_OUT; | ||
| 941 : | dst[4] = MAX(0, MIN(255, r)); | ||
| 942 : | dst[5] = MAX(0, MIN(255, g)); | ||
| 943 : | dst[6] = MAX(0, MIN(255, b)); | ||
| 944 : | dst[7] = 0; | ||
| 945 : | y_src++; | ||
| 946 : | |||
| 947 : | rgb_y = RGB_Y_tab[*y_src2]; | ||
| 948 : | b = (rgb_y + b_u) >> SCALEBITS_OUT; | ||
| 949 : | g = (rgb_y - g_uv) >> SCALEBITS_OUT; | ||
| 950 : | r = (rgb_y + r_v) >> SCALEBITS_OUT; | ||
| 951 : | dst2[0] = MAX(0, MIN(255, r)); | ||
| 952 : | dst2[1] = MAX(0, MIN(255, g)); | ||
| 953 : | dst2[2] = MAX(0, MIN(255, b)); | ||
| 954 : | dst2[3] = 0; | ||
| 955 : | y_src2++; | ||
| 956 : | |||
| 957 : | rgb_y = RGB_Y_tab[*y_src2]; | ||
| 958 : | b = (rgb_y + b_u) >> SCALEBITS_OUT; | ||
| 959 : | g = (rgb_y - g_uv) >> SCALEBITS_OUT; | ||
| 960 : | r = (rgb_y + r_v) >> SCALEBITS_OUT; | ||
| 961 : | dst2[4] = MAX(0, MIN(255, r)); | ||
| 962 : | dst2[5] = MAX(0, MIN(255, g)); | ||
| 963 : | dst2[6] = MAX(0, MIN(255, b)); | ||
| 964 : | dst2[7] = 0; | ||
| 965 : | y_src2++; | ||
| 966 : | |||
| 967 : | dst += 8; | ||
| 968 : | dst2 += 8; | ||
| 969 : | } | ||
| 970 : | |||
| 971 : | dst += dst_dif; | ||
| 972 : | dst2 += dst_dif; | ||
| 973 : | |||
| 974 : | y_src += y_dif; | ||
| 975 : | y_src2 += y_dif; | ||
| 976 : | |||
| 977 : | u_src += uv_stride; | ||
| 978 : | v_src += uv_stride; | ||
| 979 : | } | ||
| 980 : | } | ||
| 981 : | |||
| 982 : | |||
| 983 : | |||
| 984 : | /* yuv 4:2:0 planar -> yuv planar */ | ||
| 985 : | |||
| 986 : | void | ||
| 987 : | yv12_to_yuv_c(uint8_t * dst, | ||
| 988 : | int dst_stride, | ||
| 989 : | uint8_t * y_src, | ||
| 990 : | uint8_t * u_src, | ||
| 991 : | uint8_t * v_src, | ||
| 992 : | int y_stride, | ||
| 993 : | int uv_stride, | ||
| 994 : | int width, | ||
| 995 : | int height) | ||
| 996 : | { | ||
| 997 : | uint32_t dst_stride2 = dst_stride >> 1; | ||
| 998 : | uint32_t width2 = width >> 1; | ||
| 999 : | uint32_t y; | ||
| 1000 : | |||
| 1001 : | if (height < 0) { | ||
| 1002 : | height = -height; | ||
| 1003 : | y_src += (height - 1) * y_stride; | ||
| 1004 : | u_src += (height / 2 - 1) * uv_stride; | ||
| 1005 : | v_src += (height / 2 - 1) * uv_stride; | ||
| 1006 : | y_stride = -y_stride; | ||
| 1007 : | uv_stride = -uv_stride; | ||
| 1008 : | } | ||
| 1009 : | |||
| 1010 : | for (y = height; y; y--) { | ||
| 1011 : | memcpy(dst, y_src, width); | ||
| 1012 : | dst += dst_stride; | ||
| 1013 : | y_src += y_stride; | ||
| 1014 : | } | ||
| 1015 : | |||
| 1016 : | for (y = height >> 1; y; y--) { | ||
| 1017 : | memcpy(dst, u_src, width2); | ||
| 1018 : | dst += dst_stride2; | ||
| 1019 : | u_src += uv_stride; | ||
| 1020 : | } | ||
| 1021 : | |||
| 1022 : | for (y = height >> 1; y; y--) { | ||
| 1023 : | memcpy(dst, v_src, width2); | ||
| 1024 : | dst += dst_stride2; | ||
| 1025 : | v_src += uv_stride; | ||
| 1026 : | } | ||
| 1027 : | } | ||
| 1028 : | |||
| 1029 : | |||
| 1030 : | |||
| 1031 : | |||
| 1032 : | /* yuv 4:2:0 planar -> yuyv (yuv2) packed */ | ||
| 1033 : | |||
| 1034 : | void | ||
| 1035 : | yv12_to_yuyv_c(uint8_t * dst, | ||
| 1036 : | int dst_stride, | ||
| 1037 : | uint8_t * y_src, | ||
| 1038 : | uint8_t * u_src, | ||
| 1039 : | uint8_t * v_src, | ||
| 1040 : | int y_stride, | ||
| 1041 : | int uv_stride, | ||
| 1042 : | int width, | ||
| 1043 : | int height) | ||
| 1044 : | { | ||
| 1045 : | const uint32_t dst_dif = 2 * (dst_stride - width); | ||
| 1046 : | uint32_t x, y; | ||
| 1047 : | |||
| 1048 : | if (height < 0) { | ||
| 1049 : | height = -height; | ||
| 1050 : | y_src += (height - 1) * y_stride; | ||
| 1051 : | u_src += (height / 2 - 1) * uv_stride; | ||
| 1052 : | v_src += (height / 2 - 1) * uv_stride; | ||
| 1053 : | y_stride = -y_stride; | ||
| 1054 : | uv_stride = -uv_stride; | ||
| 1055 : | } | ||
| 1056 : | |||
| 1057 : | for (y = 0; y < (uint32_t) height; y++) { | ||
| 1058 : | for (x = 0; x < (uint32_t) width / 2; x++) { | ||
| 1059 : | dst[0] = y_src[2 * x]; | ||
| 1060 : | dst[1] = u_src[x]; | ||
| 1061 : | dst[2] = y_src[2 * x + 1]; | ||
| 1062 : | dst[3] = v_src[x]; | ||
| 1063 : | dst += 4; | ||
| 1064 : | } | ||
| 1065 : | dst += dst_dif; | ||
| 1066 : | y_src += y_stride; | ||
| 1067 : | if (y & 1) { | ||
| 1068 : | u_src += uv_stride; | ||
| 1069 : | v_src += uv_stride; | ||
| 1070 : | } | ||
| 1071 : | } | ||
| 1072 : | } | ||
| 1073 : | |||
| 1074 : | |||
| 1075 : | |||
| 1076 : | /* yuv 4:2:0 planar -> uyvy packed */ | ||
| 1077 : | |||
| 1078 : | void | ||
| 1079 : | yv12_to_uyvy_c(uint8_t * dst, | ||
| 1080 : | int dst_stride, | ||
| 1081 : | uint8_t * y_src, | ||
| 1082 : | uint8_t * u_src, | ||
| 1083 : | uint8_t * v_src, | ||
| 1084 : | int y_stride, | ||
| 1085 : | int uv_stride, | ||
| 1086 : | int width, | ||
| 1087 : | int height) | ||
| 1088 : | { | ||
| 1089 : | const uint32_t dst_dif = 2 * (dst_stride - width); | ||
| 1090 : | uint32_t x, y; | ||
| 1091 : | |||
| 1092 : | if (height < 0) { | ||
| 1093 : | height = -height; | ||
| 1094 : | y_src += (height - 1) * y_stride; | ||
| 1095 : | u_src += (height / 2 - 1) * uv_stride; | ||
| 1096 : | v_src += (height / 2 - 1) * uv_stride; | ||
| 1097 : | y_stride = -y_stride; | ||
| 1098 : | uv_stride = -uv_stride; | ||
| 1099 : | } | ||
| 1100 : | |||
| 1101 : | for (y = 0; y < (uint32_t) height; y++) { | ||
| 1102 : | for (x = 0; x < (uint32_t) width / 2; x++) { | ||
| 1103 : | dst[0] = u_src[x]; | ||
| 1104 : | dst[1] = y_src[2 * x]; | ||
| 1105 : | dst[2] = v_src[x]; | ||
| 1106 : | dst[3] = y_src[2 * x + 1]; | ||
| 1107 : | dst += 4; | ||
| 1108 : | } | ||
| 1109 : | dst += dst_dif; | ||
| 1110 : | y_src += y_stride; | ||
| 1111 : | if (y & 1) { | ||
| 1112 : | u_src += uv_stride; | ||
| 1113 : | v_src += uv_stride; | ||
| 1114 : | } | ||
| 1115 : | } | ||
| 1116 : | } | ||
| 1117 : | |||
| 1118 : | |||
| 1119 : | /* user yuv planar -> yuv 4:2:0 planar | ||
| 1120 : | |||
| 1121 : | NOTE: does not flip */ | ||
| 1122 : | |||
| 1123 : | void | ||
| 1124 : | user_to_yuv_c(uint8_t * y_out, | ||
| 1125 : | uint8_t * u_out, | ||
| 1126 : | uint8_t * v_out, | ||
| 1127 : | int stride, | ||
| 1128 : | DEC_PICTURE * picture, | ||
| 1129 : | int width, | ||
| 1130 : | int height) | ||
| 1131 : | { | ||
| 1132 : | uint32_t stride2 = stride >> 1; | ||
| 1133 : | uint32_t width2 = width >> 1; | ||
| 1134 : | uint32_t y; | ||
| 1135 : | uint8_t *src; | ||
| 1136 : | |||
| 1137 : | src = picture->y; | ||
| 1138 : | for (y = height; y; y--) { | ||
| 1139 : | memcpy(y_out, src, width); | ||
| 1140 : | src += picture->stride_y; | ||
| 1141 : | y_out += stride; | ||
| 1142 : | } | ||
| 1143 : | |||
| 1144 : | src = picture->u; | ||
| 1145 : | for (y = height >> 1; y; y--) { | ||
| 1146 : | memcpy(u_out, src, width2); | ||
| 1147 : | src += picture->stride_uv; | ||
| 1148 : | u_out += stride2; | ||
| 1149 : | } | ||
| 1150 : | |||
| 1151 : | src = picture->v; | ||
| 1152 : | for (y = height >> 1; y; y--) { | ||
| 1153 : | memcpy(v_out, src, width2); | ||
| 1154 : | src += picture->stride_uv; | ||
| 1155 : | v_out += stride2; | ||
| 1156 : | } | ||
| 1157 : | } |
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