Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv_sw.c @ 1322:a4566d07718f
Update for mintlib 0.57.6 (m68k-atari-mint libc)
| author | Patrice Mandin <patmandin@gmail.com> |
|---|---|
| date | Thu, 02 Feb 2006 21:27:24 +0000 |
| parents | c9b51268668f |
| children | 450721ad5436 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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|
3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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|
6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
|
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parents:
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changeset
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15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
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Sam Lantinga <slouken@libsdl.org>
parents:
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16 License along with this library; if not, write to the Free Software |
|
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 /* This is the software implementation of the YUV video overlay support */ | |
| 24 | |
| 25 /* This code was derived from code carrying the following copyright notices: | |
| 26 | |
| 27 * Copyright (c) 1995 The Regents of the University of California. | |
| 28 * All rights reserved. | |
| 29 * | |
| 30 * Permission to use, copy, modify, and distribute this software and its | |
| 31 * documentation for any purpose, without fee, and without written agreement is | |
| 32 * hereby granted, provided that the above copyright notice and the following | |
| 33 * two paragraphs appear in all copies of this software. | |
| 34 * | |
| 35 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR | |
| 36 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT | |
| 37 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF | |
| 38 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 39 * | |
| 40 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, | |
| 41 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | |
| 42 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | |
| 43 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO | |
| 44 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 45 | |
| 46 * Copyright (c) 1995 Erik Corry | |
| 47 * All rights reserved. | |
| 48 * | |
| 49 * Permission to use, copy, modify, and distribute this software and its | |
| 50 * documentation for any purpose, without fee, and without written agreement is | |
| 51 * hereby granted, provided that the above copyright notice and the following | |
| 52 * two paragraphs appear in all copies of this software. | |
| 53 * | |
| 54 * IN NO EVENT SHALL ERIK CORRY BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, | |
| 55 * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF | |
| 56 * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF ERIK CORRY HAS BEEN ADVISED | |
| 57 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 58 * | |
| 59 * ERIK CORRY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT | |
| 60 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
| 61 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" | |
| 62 * BASIS, AND ERIK CORRY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, | |
| 63 * UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 64 | |
| 65 * Portions of this software Copyright (c) 1995 Brown University. | |
| 66 * All rights reserved. | |
| 67 * | |
| 68 * Permission to use, copy, modify, and distribute this software and its | |
| 69 * documentation for any purpose, without fee, and without written agreement | |
| 70 * is hereby granted, provided that the above copyright notice and the | |
| 71 * following two paragraphs appear in all copies of this software. | |
| 72 * | |
| 73 * IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR | |
| 74 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT | |
| 75 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN | |
| 76 * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 77 * | |
| 78 * BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT | |
| 79 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
| 80 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" | |
| 81 * BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, | |
| 82 * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 83 */ | |
| 84 | |
| 85 #include <stdlib.h> | |
| 86 #include <string.h> | |
| 87 | |
| 88 #include "SDL_error.h" | |
| 89 #include "SDL_video.h" | |
|
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90 #include "SDL_cpuinfo.h" |
| 0 | 91 #include "SDL_stretch_c.h" |
| 92 #include "SDL_yuvfuncs.h" | |
| 93 #include "SDL_yuv_sw_c.h" | |
| 94 | |
| 95 /* The functions used to manipulate software video overlays */ | |
| 96 static struct private_yuvhwfuncs sw_yuvfuncs = { | |
| 97 SDL_LockYUV_SW, | |
| 98 SDL_UnlockYUV_SW, | |
| 99 SDL_DisplayYUV_SW, | |
| 100 SDL_FreeYUV_SW | |
| 101 }; | |
| 102 | |
| 103 /* RGB conversion lookup tables */ | |
| 104 struct private_yuvhwdata { | |
| 105 SDL_Surface *stretch; | |
| 106 SDL_Surface *display; | |
| 107 Uint8 *pixels; | |
| 108 int *colortab; | |
| 109 Uint32 *rgb_2_pix; | |
| 110 void (*Display1X)(int *colortab, Uint32 *rgb_2_pix, | |
| 111 unsigned char *lum, unsigned char *cr, | |
| 112 unsigned char *cb, unsigned char *out, | |
| 113 int rows, int cols, int mod ); | |
| 114 void (*Display2X)(int *colortab, Uint32 *rgb_2_pix, | |
| 115 unsigned char *lum, unsigned char *cr, | |
| 116 unsigned char *cb, unsigned char *out, | |
| 117 int rows, int cols, int mod ); | |
| 118 | |
| 119 /* These are just so we don't have to allocate them separately */ | |
| 120 Uint16 pitches[3]; | |
| 121 Uint8 *planes[3]; | |
| 122 }; | |
| 123 | |
| 124 | |
| 125 /* The colorspace conversion functions */ | |
| 126 | |
| 127 extern void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, | |
| 128 unsigned char *lum, unsigned char *cr, | |
| 129 unsigned char *cb, unsigned char *out, | |
| 130 int rows, int cols, int mod ); | |
| 131 extern void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, | |
| 132 unsigned char *lum, unsigned char *cr, | |
| 133 unsigned char *cb, unsigned char *out, | |
| 134 int rows, int cols, int mod ); | |
| 135 | |
| 136 static void Color16DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 137 unsigned char *lum, unsigned char *cr, | |
| 138 unsigned char *cb, unsigned char *out, | |
| 139 int rows, int cols, int mod ) | |
| 140 { | |
| 141 unsigned short* row1; | |
| 142 unsigned short* row2; | |
| 143 unsigned char* lum2; | |
| 144 int x, y; | |
| 145 int cr_r; | |
| 146 int crb_g; | |
| 147 int cb_b; | |
| 148 int cols_2 = cols / 2; | |
| 149 | |
| 150 row1 = (unsigned short*) out; | |
| 151 row2 = row1 + cols + mod; | |
| 152 lum2 = lum + cols; | |
| 153 | |
| 154 mod += cols + mod; | |
| 155 | |
| 156 y = rows / 2; | |
| 157 while( y-- ) | |
| 158 { | |
| 159 x = cols_2; | |
| 160 while( x-- ) | |
| 161 { | |
| 162 register int L; | |
| 163 | |
| 164 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 165 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 166 + colortab[ *cb + 2*256 ]; | |
| 167 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 168 ++cr; ++cb; | |
| 169 | |
| 170 L = *lum++; | |
| 171 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 172 rgb_2_pix[ L + crb_g ] | | |
| 173 rgb_2_pix[ L + cb_b ]); | |
| 174 | |
| 175 L = *lum++; | |
| 176 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 177 rgb_2_pix[ L + crb_g ] | | |
| 178 rgb_2_pix[ L + cb_b ]); | |
| 179 | |
| 180 | |
| 181 /* Now, do second row. */ | |
| 182 | |
| 183 L = *lum2++; | |
| 184 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 185 rgb_2_pix[ L + crb_g ] | | |
| 186 rgb_2_pix[ L + cb_b ]); | |
| 187 | |
| 188 L = *lum2++; | |
| 189 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 190 rgb_2_pix[ L + crb_g ] | | |
| 191 rgb_2_pix[ L + cb_b ]); | |
| 192 } | |
| 193 | |
| 194 /* | |
| 195 * These values are at the start of the next line, (due | |
| 196 * to the ++'s above),but they need to be at the start | |
| 197 * of the line after that. | |
| 198 */ | |
| 199 lum += cols; | |
| 200 lum2 += cols; | |
| 201 row1 += mod; | |
| 202 row2 += mod; | |
| 203 } | |
| 204 } | |
| 205 | |
| 206 static void Color24DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 207 unsigned char *lum, unsigned char *cr, | |
| 208 unsigned char *cb, unsigned char *out, | |
| 209 int rows, int cols, int mod ) | |
| 210 { | |
| 211 unsigned int value; | |
| 212 unsigned char* row1; | |
| 213 unsigned char* row2; | |
| 214 unsigned char* lum2; | |
| 215 int x, y; | |
| 216 int cr_r; | |
| 217 int crb_g; | |
| 218 int cb_b; | |
| 219 int cols_2 = cols / 2; | |
| 220 | |
| 221 row1 = out; | |
| 222 row2 = row1 + cols*3 + mod*3; | |
| 223 lum2 = lum + cols; | |
| 224 | |
| 225 mod += cols + mod; | |
| 226 mod *= 3; | |
| 227 | |
| 228 y = rows / 2; | |
| 229 while( y-- ) | |
| 230 { | |
| 231 x = cols_2; | |
| 232 while( x-- ) | |
| 233 { | |
| 234 register int L; | |
| 235 | |
| 236 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 237 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 238 + colortab[ *cb + 2*256 ]; | |
| 239 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 240 ++cr; ++cb; | |
| 241 | |
| 242 L = *lum++; | |
| 243 value = (rgb_2_pix[ L + cr_r ] | | |
| 244 rgb_2_pix[ L + crb_g ] | | |
| 245 rgb_2_pix[ L + cb_b ]); | |
| 246 *row1++ = (value ) & 0xFF; | |
| 247 *row1++ = (value >> 8) & 0xFF; | |
| 248 *row1++ = (value >> 16) & 0xFF; | |
| 249 | |
| 250 L = *lum++; | |
| 251 value = (rgb_2_pix[ L + cr_r ] | | |
| 252 rgb_2_pix[ L + crb_g ] | | |
| 253 rgb_2_pix[ L + cb_b ]); | |
| 254 *row1++ = (value ) & 0xFF; | |
| 255 *row1++ = (value >> 8) & 0xFF; | |
| 256 *row1++ = (value >> 16) & 0xFF; | |
| 257 | |
| 258 | |
| 259 /* Now, do second row. */ | |
| 260 | |
| 261 L = *lum2++; | |
| 262 value = (rgb_2_pix[ L + cr_r ] | | |
| 263 rgb_2_pix[ L + crb_g ] | | |
| 264 rgb_2_pix[ L + cb_b ]); | |
| 265 *row2++ = (value ) & 0xFF; | |
| 266 *row2++ = (value >> 8) & 0xFF; | |
| 267 *row2++ = (value >> 16) & 0xFF; | |
| 268 | |
| 269 L = *lum2++; | |
| 270 value = (rgb_2_pix[ L + cr_r ] | | |
| 271 rgb_2_pix[ L + crb_g ] | | |
| 272 rgb_2_pix[ L + cb_b ]); | |
| 273 *row2++ = (value ) & 0xFF; | |
| 274 *row2++ = (value >> 8) & 0xFF; | |
| 275 *row2++ = (value >> 16) & 0xFF; | |
| 276 } | |
| 277 | |
| 278 /* | |
| 279 * These values are at the start of the next line, (due | |
| 280 * to the ++'s above),but they need to be at the start | |
| 281 * of the line after that. | |
| 282 */ | |
| 283 lum += cols; | |
| 284 lum2 += cols; | |
| 285 row1 += mod; | |
| 286 row2 += mod; | |
| 287 } | |
| 288 } | |
| 289 | |
| 290 static void Color32DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 291 unsigned char *lum, unsigned char *cr, | |
| 292 unsigned char *cb, unsigned char *out, | |
| 293 int rows, int cols, int mod ) | |
| 294 { | |
| 295 unsigned int* row1; | |
| 296 unsigned int* row2; | |
| 297 unsigned char* lum2; | |
| 298 int x, y; | |
| 299 int cr_r; | |
| 300 int crb_g; | |
| 301 int cb_b; | |
| 302 int cols_2 = cols / 2; | |
| 303 | |
| 304 row1 = (unsigned int*) out; | |
| 305 row2 = row1 + cols + mod; | |
| 306 lum2 = lum + cols; | |
| 307 | |
| 308 mod += cols + mod; | |
| 309 | |
| 310 y = rows / 2; | |
| 311 while( y-- ) | |
| 312 { | |
| 313 x = cols_2; | |
| 314 while( x-- ) | |
| 315 { | |
| 316 register int L; | |
| 317 | |
| 318 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 319 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 320 + colortab[ *cb + 2*256 ]; | |
| 321 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 322 ++cr; ++cb; | |
| 323 | |
| 324 L = *lum++; | |
| 325 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 326 rgb_2_pix[ L + crb_g ] | | |
| 327 rgb_2_pix[ L + cb_b ]); | |
| 328 | |
| 329 L = *lum++; | |
| 330 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 331 rgb_2_pix[ L + crb_g ] | | |
| 332 rgb_2_pix[ L + cb_b ]); | |
| 333 | |
| 334 | |
| 335 /* Now, do second row. */ | |
| 336 | |
| 337 L = *lum2++; | |
| 338 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 339 rgb_2_pix[ L + crb_g ] | | |
| 340 rgb_2_pix[ L + cb_b ]); | |
| 341 | |
| 342 L = *lum2++; | |
| 343 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 344 rgb_2_pix[ L + crb_g ] | | |
| 345 rgb_2_pix[ L + cb_b ]); | |
| 346 } | |
| 347 | |
| 348 /* | |
| 349 * These values are at the start of the next line, (due | |
| 350 * to the ++'s above),but they need to be at the start | |
| 351 * of the line after that. | |
| 352 */ | |
| 353 lum += cols; | |
| 354 lum2 += cols; | |
| 355 row1 += mod; | |
| 356 row2 += mod; | |
| 357 } | |
| 358 } | |
| 359 | |
| 360 /* | |
| 361 * In this function I make use of a nasty trick. The tables have the lower | |
| 362 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 363 * the horisontal doubling for free (almost). | |
| 364 */ | |
| 365 static void Color16DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 366 unsigned char *lum, unsigned char *cr, | |
| 367 unsigned char *cb, unsigned char *out, | |
| 368 int rows, int cols, int mod ) | |
| 369 { | |
| 370 unsigned int* row1 = (unsigned int*) out; | |
| 371 const int next_row = cols+(mod/2); | |
| 372 unsigned int* row2 = row1 + 2*next_row; | |
| 373 unsigned char* lum2; | |
| 374 int x, y; | |
| 375 int cr_r; | |
| 376 int crb_g; | |
| 377 int cb_b; | |
| 378 int cols_2 = cols / 2; | |
| 379 | |
| 380 lum2 = lum + cols; | |
| 381 | |
| 382 mod = (next_row * 3) + (mod/2); | |
| 383 | |
| 384 y = rows / 2; | |
| 385 while( y-- ) | |
| 386 { | |
| 387 x = cols_2; | |
| 388 while( x-- ) | |
| 389 { | |
| 390 register int L; | |
| 391 | |
| 392 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 393 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 394 + colortab[ *cb + 2*256 ]; | |
| 395 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 396 ++cr; ++cb; | |
| 397 | |
| 398 L = *lum++; | |
| 399 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 400 rgb_2_pix[ L + crb_g ] | | |
| 401 rgb_2_pix[ L + cb_b ]); | |
| 402 row1++; | |
| 403 | |
| 404 L = *lum++; | |
| 405 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 406 rgb_2_pix[ L + crb_g ] | | |
| 407 rgb_2_pix[ L + cb_b ]); | |
| 408 row1++; | |
| 409 | |
| 410 | |
| 411 /* Now, do second row. */ | |
| 412 | |
| 413 L = *lum2++; | |
| 414 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 415 rgb_2_pix[ L + crb_g ] | | |
| 416 rgb_2_pix[ L + cb_b ]); | |
| 417 row2++; | |
| 418 | |
| 419 L = *lum2++; | |
| 420 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 421 rgb_2_pix[ L + crb_g ] | | |
| 422 rgb_2_pix[ L + cb_b ]); | |
| 423 row2++; | |
| 424 } | |
| 425 | |
| 426 /* | |
| 427 * These values are at the start of the next line, (due | |
| 428 * to the ++'s above),but they need to be at the start | |
| 429 * of the line after that. | |
| 430 */ | |
| 431 lum += cols; | |
| 432 lum2 += cols; | |
| 433 row1 += mod; | |
| 434 row2 += mod; | |
| 435 } | |
| 436 } | |
| 437 | |
| 438 static void Color24DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 439 unsigned char *lum, unsigned char *cr, | |
| 440 unsigned char *cb, unsigned char *out, | |
| 441 int rows, int cols, int mod ) | |
| 442 { | |
| 443 unsigned int value; | |
| 444 unsigned char* row1 = out; | |
| 445 const int next_row = (cols*2 + mod) * 3; | |
| 446 unsigned char* row2 = row1 + 2*next_row; | |
| 447 unsigned char* lum2; | |
| 448 int x, y; | |
| 449 int cr_r; | |
| 450 int crb_g; | |
| 451 int cb_b; | |
| 452 int cols_2 = cols / 2; | |
| 453 | |
| 454 lum2 = lum + cols; | |
| 455 | |
| 456 mod = next_row*3 + mod*3; | |
| 457 | |
| 458 y = rows / 2; | |
| 459 while( y-- ) | |
| 460 { | |
| 461 x = cols_2; | |
| 462 while( x-- ) | |
| 463 { | |
| 464 register int L; | |
| 465 | |
| 466 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 467 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 468 + colortab[ *cb + 2*256 ]; | |
| 469 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 470 ++cr; ++cb; | |
| 471 | |
| 472 L = *lum++; | |
| 473 value = (rgb_2_pix[ L + cr_r ] | | |
| 474 rgb_2_pix[ L + crb_g ] | | |
| 475 rgb_2_pix[ L + cb_b ]); | |
| 476 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 477 (value ) & 0xFF; | |
| 478 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 479 (value >> 8) & 0xFF; | |
| 480 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 481 (value >> 16) & 0xFF; | |
| 482 row1 += 2*3; | |
| 483 | |
| 484 L = *lum++; | |
| 485 value = (rgb_2_pix[ L + cr_r ] | | |
| 486 rgb_2_pix[ L + crb_g ] | | |
| 487 rgb_2_pix[ L + cb_b ]); | |
| 488 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 489 (value ) & 0xFF; | |
| 490 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 491 (value >> 8) & 0xFF; | |
| 492 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 493 (value >> 16) & 0xFF; | |
| 494 row1 += 2*3; | |
| 495 | |
| 496 | |
| 497 /* Now, do second row. */ | |
| 498 | |
| 499 L = *lum2++; | |
| 500 value = (rgb_2_pix[ L + cr_r ] | | |
| 501 rgb_2_pix[ L + crb_g ] | | |
| 502 rgb_2_pix[ L + cb_b ]); | |
| 503 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 504 (value ) & 0xFF; | |
| 505 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 506 (value >> 8) & 0xFF; | |
| 507 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 508 (value >> 16) & 0xFF; | |
| 509 row2 += 2*3; | |
| 510 | |
| 511 L = *lum2++; | |
| 512 value = (rgb_2_pix[ L + cr_r ] | | |
| 513 rgb_2_pix[ L + crb_g ] | | |
| 514 rgb_2_pix[ L + cb_b ]); | |
| 515 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 516 (value ) & 0xFF; | |
| 517 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 518 (value >> 8) & 0xFF; | |
| 519 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 520 (value >> 16) & 0xFF; | |
| 521 row2 += 2*3; | |
| 522 } | |
| 523 | |
| 524 /* | |
| 525 * These values are at the start of the next line, (due | |
| 526 * to the ++'s above),but they need to be at the start | |
| 527 * of the line after that. | |
| 528 */ | |
| 529 lum += cols; | |
| 530 lum2 += cols; | |
| 531 row1 += mod; | |
| 532 row2 += mod; | |
| 533 } | |
| 534 } | |
| 535 | |
| 536 static void Color32DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 537 unsigned char *lum, unsigned char *cr, | |
| 538 unsigned char *cb, unsigned char *out, | |
| 539 int rows, int cols, int mod ) | |
| 540 { | |
| 541 unsigned int* row1 = (unsigned int*) out; | |
| 542 const int next_row = cols*2+mod; | |
| 543 unsigned int* row2 = row1 + 2*next_row; | |
| 544 unsigned char* lum2; | |
| 545 int x, y; | |
| 546 int cr_r; | |
| 547 int crb_g; | |
| 548 int cb_b; | |
| 549 int cols_2 = cols / 2; | |
| 550 | |
| 551 lum2 = lum + cols; | |
| 552 | |
| 553 mod = (next_row * 3) + mod; | |
| 554 | |
| 555 y = rows / 2; | |
| 556 while( y-- ) | |
| 557 { | |
| 558 x = cols_2; | |
| 559 while( x-- ) | |
| 560 { | |
| 561 register int L; | |
| 562 | |
| 563 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 564 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 565 + colortab[ *cb + 2*256 ]; | |
| 566 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 567 ++cr; ++cb; | |
| 568 | |
| 569 L = *lum++; | |
| 570 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = | |
| 571 (rgb_2_pix[ L + cr_r ] | | |
| 572 rgb_2_pix[ L + crb_g ] | | |
| 573 rgb_2_pix[ L + cb_b ]); | |
| 574 row1 += 2; | |
| 575 | |
| 576 L = *lum++; | |
| 577 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = | |
| 578 (rgb_2_pix[ L + cr_r ] | | |
| 579 rgb_2_pix[ L + crb_g ] | | |
| 580 rgb_2_pix[ L + cb_b ]); | |
| 581 row1 += 2; | |
| 582 | |
| 583 | |
| 584 /* Now, do second row. */ | |
| 585 | |
| 586 L = *lum2++; | |
| 587 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 588 (rgb_2_pix[ L + cr_r ] | | |
| 589 rgb_2_pix[ L + crb_g ] | | |
| 590 rgb_2_pix[ L + cb_b ]); | |
| 591 row2 += 2; | |
| 592 | |
| 593 L = *lum2++; | |
| 594 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 595 (rgb_2_pix[ L + cr_r ] | | |
| 596 rgb_2_pix[ L + crb_g ] | | |
| 597 rgb_2_pix[ L + cb_b ]); | |
| 598 row2 += 2; | |
| 599 } | |
| 600 | |
| 601 /* | |
| 602 * These values are at the start of the next line, (due | |
| 603 * to the ++'s above),but they need to be at the start | |
| 604 * of the line after that. | |
| 605 */ | |
| 606 lum += cols; | |
| 607 lum2 += cols; | |
| 608 row1 += mod; | |
| 609 row2 += mod; | |
| 610 } | |
| 611 } | |
| 612 | |
| 613 static void Color16DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 614 unsigned char *lum, unsigned char *cr, | |
| 615 unsigned char *cb, unsigned char *out, | |
| 616 int rows, int cols, int mod ) | |
| 617 { | |
| 618 unsigned short* row; | |
| 619 int x, y; | |
| 620 int cr_r; | |
| 621 int crb_g; | |
| 622 int cb_b; | |
| 623 int cols_2 = cols / 2; | |
| 624 | |
| 625 row = (unsigned short*) out; | |
| 626 | |
| 627 y = rows; | |
| 628 while( y-- ) | |
| 629 { | |
| 630 x = cols_2; | |
| 631 while( x-- ) | |
| 632 { | |
| 633 register int L; | |
| 634 | |
| 635 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 636 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 637 + colortab[ *cb + 2*256 ]; | |
| 638 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 639 cr += 4; cb += 4; | |
| 640 | |
| 641 L = *lum; lum += 2; | |
| 642 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 643 rgb_2_pix[ L + crb_g ] | | |
| 644 rgb_2_pix[ L + cb_b ]); | |
| 645 | |
| 646 L = *lum; lum += 2; | |
| 647 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 648 rgb_2_pix[ L + crb_g ] | | |
| 649 rgb_2_pix[ L + cb_b ]); | |
| 650 | |
| 651 } | |
| 652 | |
| 653 row += mod; | |
| 654 } | |
| 655 } | |
| 656 | |
| 657 static void Color24DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 658 unsigned char *lum, unsigned char *cr, | |
| 659 unsigned char *cb, unsigned char *out, | |
| 660 int rows, int cols, int mod ) | |
| 661 { | |
| 662 unsigned int value; | |
| 663 unsigned char* row; | |
| 664 int x, y; | |
| 665 int cr_r; | |
| 666 int crb_g; | |
| 667 int cb_b; | |
| 668 int cols_2 = cols / 2; | |
| 669 | |
| 670 row = (unsigned char*) out; | |
| 671 mod *= 3; | |
| 672 y = rows; | |
| 673 while( y-- ) | |
| 674 { | |
| 675 x = cols_2; | |
| 676 while( x-- ) | |
| 677 { | |
| 678 register int L; | |
| 679 | |
| 680 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 681 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 682 + colortab[ *cb + 2*256 ]; | |
| 683 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 684 cr += 4; cb += 4; | |
| 685 | |
| 686 L = *lum; lum += 2; | |
| 687 value = (rgb_2_pix[ L + cr_r ] | | |
| 688 rgb_2_pix[ L + crb_g ] | | |
| 689 rgb_2_pix[ L + cb_b ]); | |
| 690 *row++ = (value ) & 0xFF; | |
| 691 *row++ = (value >> 8) & 0xFF; | |
| 692 *row++ = (value >> 16) & 0xFF; | |
| 693 | |
| 694 L = *lum; lum += 2; | |
| 695 value = (rgb_2_pix[ L + cr_r ] | | |
| 696 rgb_2_pix[ L + crb_g ] | | |
| 697 rgb_2_pix[ L + cb_b ]); | |
| 698 *row++ = (value ) & 0xFF; | |
| 699 *row++ = (value >> 8) & 0xFF; | |
| 700 *row++ = (value >> 16) & 0xFF; | |
| 701 | |
| 702 } | |
| 703 row += mod; | |
| 704 } | |
| 705 } | |
| 706 | |
| 707 static void Color32DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 708 unsigned char *lum, unsigned char *cr, | |
| 709 unsigned char *cb, unsigned char *out, | |
| 710 int rows, int cols, int mod ) | |
| 711 { | |
| 712 unsigned int* row; | |
| 713 int x, y; | |
| 714 int cr_r; | |
| 715 int crb_g; | |
| 716 int cb_b; | |
| 717 int cols_2 = cols / 2; | |
| 718 | |
| 719 row = (unsigned int*) out; | |
| 720 y = rows; | |
| 721 while( y-- ) | |
| 722 { | |
| 723 x = cols_2; | |
| 724 while( x-- ) | |
| 725 { | |
| 726 register int L; | |
| 727 | |
| 728 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 729 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 730 + colortab[ *cb + 2*256 ]; | |
| 731 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 732 cr += 4; cb += 4; | |
| 733 | |
| 734 L = *lum; lum += 2; | |
| 735 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 736 rgb_2_pix[ L + crb_g ] | | |
| 737 rgb_2_pix[ L + cb_b ]); | |
| 738 | |
| 739 L = *lum; lum += 2; | |
| 740 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 741 rgb_2_pix[ L + crb_g ] | | |
| 742 rgb_2_pix[ L + cb_b ]); | |
| 743 | |
| 744 | |
| 745 } | |
| 746 row += mod; | |
| 747 } | |
| 748 } | |
| 749 | |
| 750 /* | |
| 751 * In this function I make use of a nasty trick. The tables have the lower | |
| 752 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 753 * the horisontal doubling for free (almost). | |
| 754 */ | |
| 755 static void Color16DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 756 unsigned char *lum, unsigned char *cr, | |
| 757 unsigned char *cb, unsigned char *out, | |
| 758 int rows, int cols, int mod ) | |
| 759 { | |
| 760 unsigned int* row = (unsigned int*) out; | |
| 761 const int next_row = cols+(mod/2); | |
| 762 int x, y; | |
| 763 int cr_r; | |
| 764 int crb_g; | |
| 765 int cb_b; | |
| 766 int cols_2 = cols / 2; | |
| 767 | |
| 768 y = rows; | |
| 769 while( y-- ) | |
| 770 { | |
| 771 x = cols_2; | |
| 772 while( x-- ) | |
| 773 { | |
| 774 register int L; | |
| 775 | |
| 776 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 777 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 778 + colortab[ *cb + 2*256 ]; | |
| 779 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 780 cr += 4; cb += 4; | |
| 781 | |
| 782 L = *lum; lum += 2; | |
| 783 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 784 rgb_2_pix[ L + crb_g ] | | |
| 785 rgb_2_pix[ L + cb_b ]); | |
| 786 row++; | |
| 787 | |
| 788 L = *lum; lum += 2; | |
| 789 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 790 rgb_2_pix[ L + crb_g ] | | |
| 791 rgb_2_pix[ L + cb_b ]); | |
| 792 row++; | |
| 793 | |
| 794 } | |
| 795 row += next_row; | |
| 796 } | |
| 797 } | |
| 798 | |
| 799 static void Color24DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 800 unsigned char *lum, unsigned char *cr, | |
| 801 unsigned char *cb, unsigned char *out, | |
| 802 int rows, int cols, int mod ) | |
| 803 { | |
| 804 unsigned int value; | |
| 805 unsigned char* row = out; | |
| 806 const int next_row = (cols*2 + mod) * 3; | |
| 807 int x, y; | |
| 808 int cr_r; | |
| 809 int crb_g; | |
| 810 int cb_b; | |
| 811 int cols_2 = cols / 2; | |
| 812 y = rows; | |
| 813 while( y-- ) | |
| 814 { | |
| 815 x = cols_2; | |
| 816 while( x-- ) | |
| 817 { | |
| 818 register int L; | |
| 819 | |
| 820 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 821 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 822 + colortab[ *cb + 2*256 ]; | |
| 823 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 824 cr += 4; cb += 4; | |
| 825 | |
| 826 L = *lum; lum += 2; | |
| 827 value = (rgb_2_pix[ L + cr_r ] | | |
| 828 rgb_2_pix[ L + crb_g ] | | |
| 829 rgb_2_pix[ L + cb_b ]); | |
| 830 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 831 (value ) & 0xFF; | |
| 832 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 833 (value >> 8) & 0xFF; | |
| 834 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 835 (value >> 16) & 0xFF; | |
| 836 row += 2*3; | |
| 837 | |
| 838 L = *lum; lum += 2; | |
| 839 value = (rgb_2_pix[ L + cr_r ] | | |
| 840 rgb_2_pix[ L + crb_g ] | | |
| 841 rgb_2_pix[ L + cb_b ]); | |
| 842 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 843 (value ) & 0xFF; | |
| 844 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 845 (value >> 8) & 0xFF; | |
| 846 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 847 (value >> 16) & 0xFF; | |
| 848 row += 2*3; | |
| 849 | |
| 850 } | |
| 851 row += next_row; | |
| 852 } | |
| 853 } | |
| 854 | |
| 855 static void Color32DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 856 unsigned char *lum, unsigned char *cr, | |
| 857 unsigned char *cb, unsigned char *out, | |
| 858 int rows, int cols, int mod ) | |
| 859 { | |
| 860 unsigned int* row = (unsigned int*) out; | |
| 861 const int next_row = cols*2+mod; | |
| 862 int x, y; | |
| 863 int cr_r; | |
| 864 int crb_g; | |
| 865 int cb_b; | |
| 866 int cols_2 = cols / 2; | |
| 867 mod+=mod; | |
| 868 y = rows; | |
| 869 while( y-- ) | |
| 870 { | |
| 871 x = cols_2; | |
| 872 while( x-- ) | |
| 873 { | |
| 874 register int L; | |
| 875 | |
| 876 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 877 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 878 + colortab[ *cb + 2*256 ]; | |
| 879 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 880 cr += 4; cb += 4; | |
| 881 | |
| 882 L = *lum; lum += 2; | |
| 883 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 884 (rgb_2_pix[ L + cr_r ] | | |
| 885 rgb_2_pix[ L + crb_g ] | | |
| 886 rgb_2_pix[ L + cb_b ]); | |
| 887 row += 2; | |
| 888 | |
| 889 L = *lum; lum += 2; | |
| 890 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 891 (rgb_2_pix[ L + cr_r ] | | |
| 892 rgb_2_pix[ L + crb_g ] | | |
| 893 rgb_2_pix[ L + cb_b ]); | |
| 894 row += 2; | |
| 895 | |
| 896 | |
| 897 } | |
| 898 | |
| 899 row += next_row; | |
| 900 } | |
| 901 } | |
| 902 | |
| 903 /* | |
| 904 * How many 1 bits are there in the Uint32. | |
| 905 * Low performance, do not call often. | |
| 906 */ | |
| 907 static int number_of_bits_set( Uint32 a ) | |
| 908 { | |
| 909 if(!a) return 0; | |
| 910 if(a & 1) return 1 + number_of_bits_set(a >> 1); | |
| 911 return(number_of_bits_set(a >> 1)); | |
| 912 } | |
| 913 | |
| 914 /* | |
| 915 * How many 0 bits are there at least significant end of Uint32. | |
| 916 * Low performance, do not call often. | |
| 917 */ | |
| 918 static int free_bits_at_bottom( Uint32 a ) | |
| 919 { | |
| 920 /* assume char is 8 bits */ | |
| 921 if(!a) return sizeof(Uint32) * 8; | |
| 922 if(((Sint32)a) & 1l) return 0; | |
| 923 return 1 + free_bits_at_bottom ( a >> 1); | |
| 924 } | |
| 925 | |
| 926 | |
| 927 SDL_Overlay *SDL_CreateYUV_SW(_THIS, int width, int height, Uint32 format, SDL_Surface *display) | |
| 928 { | |
| 929 SDL_Overlay *overlay; | |
| 930 struct private_yuvhwdata *swdata; | |
| 931 int *Cr_r_tab; | |
| 932 int *Cr_g_tab; | |
| 933 int *Cb_g_tab; | |
| 934 int *Cb_b_tab; | |
| 935 Uint32 *r_2_pix_alloc; | |
| 936 Uint32 *g_2_pix_alloc; | |
| 937 Uint32 *b_2_pix_alloc; | |
|
739
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
366
diff
changeset
|
938 int i; |
| 0 | 939 int CR, CB; |
| 940 Uint32 Rmask, Gmask, Bmask; | |
| 941 | |
| 942 /* Only RGB packed pixel conversion supported */ | |
| 943 if ( (display->format->BytesPerPixel != 2) && | |
| 944 (display->format->BytesPerPixel != 3) && | |
| 945 (display->format->BytesPerPixel != 4) ) { | |
| 946 SDL_SetError("Can't use YUV data on non 16/24/32 bit surfaces"); | |
| 947 return(NULL); | |
| 948 } | |
| 949 | |
| 950 /* Verify that we support the format */ | |
| 951 switch (format) { | |
| 952 case SDL_YV12_OVERLAY: | |
| 953 case SDL_IYUV_OVERLAY: | |
| 954 case SDL_YUY2_OVERLAY: | |
| 955 case SDL_UYVY_OVERLAY: | |
| 956 case SDL_YVYU_OVERLAY: | |
| 957 break; | |
| 958 default: | |
| 959 SDL_SetError("Unsupported YUV format"); | |
| 960 return(NULL); | |
| 961 } | |
| 962 | |
| 963 /* Create the overlay structure */ | |
| 964 overlay = (SDL_Overlay *)malloc(sizeof *overlay); | |
| 965 if ( overlay == NULL ) { | |
| 966 SDL_OutOfMemory(); | |
| 967 return(NULL); | |
| 968 } | |
| 969 memset(overlay, 0, (sizeof *overlay)); | |
| 970 | |
| 971 /* Fill in the basic members */ | |
| 972 overlay->format = format; | |
| 973 overlay->w = width; | |
| 974 overlay->h = height; | |
| 975 | |
| 976 /* Set up the YUV surface function structure */ | |
| 977 overlay->hwfuncs = &sw_yuvfuncs; | |
| 978 | |
| 979 /* Create the pixel data and lookup tables */ | |
| 980 swdata = (struct private_yuvhwdata *)malloc(sizeof *swdata); | |
| 981 overlay->hwdata = swdata; | |
| 982 if ( swdata == NULL ) { | |
| 983 SDL_OutOfMemory(); | |
| 984 SDL_FreeYUVOverlay(overlay); | |
| 985 return(NULL); | |
| 986 } | |
| 987 swdata->stretch = NULL; | |
| 988 swdata->display = display; | |
| 989 swdata->pixels = (Uint8 *) malloc(width*height*2); | |
| 990 swdata->colortab = (int *)malloc(4*256*sizeof(int)); | |
| 991 Cr_r_tab = &swdata->colortab[0*256]; | |
| 992 Cr_g_tab = &swdata->colortab[1*256]; | |
| 993 Cb_g_tab = &swdata->colortab[2*256]; | |
| 994 Cb_b_tab = &swdata->colortab[3*256]; | |
| 995 swdata->rgb_2_pix = (Uint32 *)malloc(3*768*sizeof(Uint32)); | |
| 996 r_2_pix_alloc = &swdata->rgb_2_pix[0*768]; | |
| 997 g_2_pix_alloc = &swdata->rgb_2_pix[1*768]; | |
| 998 b_2_pix_alloc = &swdata->rgb_2_pix[2*768]; | |
| 999 if ( ! swdata->pixels || ! swdata->colortab || ! swdata->rgb_2_pix ) { | |
| 1000 SDL_OutOfMemory(); | |
| 1001 SDL_FreeYUVOverlay(overlay); | |
| 1002 return(NULL); | |
| 1003 } | |
| 1004 | |
| 1005 /* Generate the tables for the display surface */ | |
| 1006 for (i=0; i<256; i++) { | |
| 1007 /* Gamma correction (luminescence table) and chroma correction | |
| 1008 would be done here. See the Berkeley mpeg_play sources. | |
| 1009 */ | |
| 1010 CB = CR = (i-128); | |
| 1011 Cr_r_tab[i] = (int) ( (0.419/0.299) * CR); | |
| 1012 Cr_g_tab[i] = (int) (-(0.299/0.419) * CR); | |
| 1013 Cb_g_tab[i] = (int) (-(0.114/0.331) * CB); | |
| 1014 Cb_b_tab[i] = (int) ( (0.587/0.331) * CB); | |
| 1015 } | |
| 1016 | |
| 1017 /* | |
| 1018 * Set up entries 0-255 in rgb-to-pixel value tables. | |
| 1019 */ | |
| 1020 Rmask = display->format->Rmask; | |
| 1021 Gmask = display->format->Gmask; | |
| 1022 Bmask = display->format->Bmask; | |
| 1023 for ( i=0; i<256; ++i ) { | |
| 1024 r_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Rmask)); | |
| 1025 r_2_pix_alloc[i+256] <<= free_bits_at_bottom(Rmask); | |
| 1026 g_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Gmask)); | |
| 1027 g_2_pix_alloc[i+256] <<= free_bits_at_bottom(Gmask); | |
| 1028 b_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Bmask)); | |
| 1029 b_2_pix_alloc[i+256] <<= free_bits_at_bottom(Bmask); | |
| 1030 } | |
| 1031 | |
| 1032 /* | |
| 1033 * If we have 16-bit output depth, then we double the value | |
| 1034 * in the top word. This means that we can write out both | |
| 1035 * pixels in the pixel doubling mode with one op. It is | |
| 1036 * harmless in the normal case as storing a 32-bit value | |
| 1037 * through a short pointer will lose the top bits anyway. | |
| 1038 */ | |
| 1039 if( display->format->BytesPerPixel == 2 ) { | |
| 1040 for ( i=0; i<256; ++i ) { | |
| 1041 r_2_pix_alloc[i+256] |= (r_2_pix_alloc[i+256]) << 16; | |
| 1042 g_2_pix_alloc[i+256] |= (g_2_pix_alloc[i+256]) << 16; | |
| 1043 b_2_pix_alloc[i+256] |= (b_2_pix_alloc[i+256]) << 16; | |
| 1044 } | |
| 1045 } | |
| 1046 | |
| 1047 /* | |
| 1048 * Spread out the values we have to the rest of the array so that | |
| 1049 * we do not need to check for overflow. | |
| 1050 */ | |
| 1051 for ( i=0; i<256; ++i ) { | |
| 1052 r_2_pix_alloc[i] = r_2_pix_alloc[256]; | |
| 1053 r_2_pix_alloc[i+512] = r_2_pix_alloc[511]; | |
| 1054 g_2_pix_alloc[i] = g_2_pix_alloc[256]; | |
| 1055 g_2_pix_alloc[i+512] = g_2_pix_alloc[511]; | |
| 1056 b_2_pix_alloc[i] = b_2_pix_alloc[256]; | |
| 1057 b_2_pix_alloc[i+512] = b_2_pix_alloc[511]; | |
| 1058 } | |
| 1059 | |
| 1060 /* You have chosen wisely... */ | |
| 1061 switch (format) { | |
| 1062 case SDL_YV12_OVERLAY: | |
| 1063 case SDL_IYUV_OVERLAY: | |
| 1064 if ( display->format->BytesPerPixel == 2 ) { | |
| 1065 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) | |
| 1066 /* inline assembly functions */ | |
|
739
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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|
1067 if ( SDL_HasMMX() && (Rmask == 0xF800) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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changeset
|
1068 (Gmask == 0x07E0) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
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changeset
|
1069 (Bmask == 0x001F) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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|
1070 (width & 15) == 0) { |
| 0 | 1071 /*printf("Using MMX 16-bit 565 dither\n");*/ |
| 1072 swdata->Display1X = Color565DitherYV12MMX1X; | |
| 1073 } else { | |
| 1074 /*printf("Using C 16-bit dither\n");*/ | |
| 1075 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1076 } | |
| 1077 #else | |
| 1078 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1079 #endif | |
| 1080 swdata->Display2X = Color16DitherYV12Mod2X; | |
| 1081 } | |
| 1082 if ( display->format->BytesPerPixel == 3 ) { | |
| 1083 swdata->Display1X = Color24DitherYV12Mod1X; | |
| 1084 swdata->Display2X = Color24DitherYV12Mod2X; | |
| 1085 } | |
| 1086 if ( display->format->BytesPerPixel == 4 ) { | |
| 1087 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) | |
| 1088 /* inline assembly functions */ | |
|
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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changeset
|
1089 if ( SDL_HasMMX() && (Rmask == 0x00FF0000) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
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changeset
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1090 (Gmask == 0x0000FF00) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
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changeset
|
1091 (Bmask == 0x000000FF) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
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changeset
|
1092 (width & 15) == 0) { |
| 0 | 1093 /*printf("Using MMX 32-bit dither\n");*/ |
| 1094 swdata->Display1X = ColorRGBDitherYV12MMX1X; | |
| 1095 } else { | |
| 1096 /*printf("Using C 32-bit dither\n");*/ | |
| 1097 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1098 } | |
| 1099 #else | |
| 1100 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1101 #endif | |
| 1102 swdata->Display2X = Color32DitherYV12Mod2X; | |
| 1103 } | |
| 1104 break; | |
| 1105 case SDL_YUY2_OVERLAY: | |
| 1106 case SDL_UYVY_OVERLAY: | |
| 1107 case SDL_YVYU_OVERLAY: | |
| 1108 if ( display->format->BytesPerPixel == 2 ) { | |
| 1109 swdata->Display1X = Color16DitherYUY2Mod1X; | |
| 1110 swdata->Display2X = Color16DitherYUY2Mod2X; | |
| 1111 } | |
| 1112 if ( display->format->BytesPerPixel == 3 ) { | |
| 1113 swdata->Display1X = Color24DitherYUY2Mod1X; | |
| 1114 swdata->Display2X = Color24DitherYUY2Mod2X; | |
| 1115 } | |
| 1116 if ( display->format->BytesPerPixel == 4 ) { | |
| 1117 swdata->Display1X = Color32DitherYUY2Mod1X; | |
| 1118 swdata->Display2X = Color32DitherYUY2Mod2X; | |
| 1119 } | |
| 1120 break; | |
| 1121 default: | |
| 1122 /* We should never get here (caught above) */ | |
| 1123 break; | |
| 1124 } | |
| 1125 | |
| 1126 /* Find the pitch and offset values for the overlay */ | |
| 1127 overlay->pitches = swdata->pitches; | |
| 1128 overlay->pixels = swdata->planes; | |
| 1129 switch (format) { | |
| 1130 case SDL_YV12_OVERLAY: | |
| 1131 case SDL_IYUV_OVERLAY: | |
| 1132 overlay->pitches[0] = overlay->w; | |
| 1133 overlay->pitches[1] = overlay->pitches[0] / 2; | |
| 1134 overlay->pitches[2] = overlay->pitches[0] / 2; | |
| 1135 overlay->pixels[0] = swdata->pixels; | |
| 1136 overlay->pixels[1] = overlay->pixels[0] + | |
| 1137 overlay->pitches[0] * overlay->h; | |
| 1138 overlay->pixels[2] = overlay->pixels[1] + | |
| 1139 overlay->pitches[1] * overlay->h / 2; | |
| 1140 overlay->planes = 3; | |
| 1141 break; | |
| 1142 case SDL_YUY2_OVERLAY: | |
| 1143 case SDL_UYVY_OVERLAY: | |
| 1144 case SDL_YVYU_OVERLAY: | |
| 1145 overlay->pitches[0] = overlay->w*2; | |
| 1146 overlay->pixels[0] = swdata->pixels; | |
| 1147 overlay->planes = 1; | |
| 1148 break; | |
| 1149 default: | |
| 1150 /* We should never get here (caught above) */ | |
| 1151 break; | |
| 1152 } | |
| 1153 | |
| 1154 /* We're all done.. */ | |
| 1155 return(overlay); | |
| 1156 } | |
| 1157 | |
| 1158 int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1159 { | |
| 1160 return(0); | |
| 1161 } | |
| 1162 | |
| 1163 void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1164 { | |
| 1165 return; | |
| 1166 } | |
| 1167 | |
| 1168 int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 1169 { | |
| 1170 struct private_yuvhwdata *swdata; | |
| 1171 SDL_Surface *stretch; | |
| 1172 SDL_Surface *display; | |
| 1173 int scale_2x; | |
| 1174 Uint8 *lum, *Cr, *Cb; | |
| 1175 Uint8 *dst; | |
| 1176 int mod; | |
| 1177 | |
| 1178 swdata = overlay->hwdata; | |
| 1179 scale_2x = 0; | |
| 1180 stretch = 0; | |
| 1181 if ( (overlay->w != dstrect->w) || (overlay->h != dstrect->h) ) { | |
| 1182 if ( (dstrect->w == 2*overlay->w) && | |
| 1183 (dstrect->h == 2*overlay->h) ) { | |
| 1184 scale_2x = 1; | |
| 1185 } else { | |
| 1186 if ( ! swdata->stretch ) { | |
| 1187 display = swdata->display; | |
| 1188 swdata->stretch = SDL_CreateRGBSurface( | |
| 1189 SDL_SWSURFACE, | |
| 1190 overlay->w, overlay->h, | |
| 1191 display->format->BitsPerPixel, | |
| 1192 display->format->Rmask, | |
| 1193 display->format->Gmask, | |
| 1194 display->format->Bmask, 0); | |
| 1195 if ( ! swdata->stretch ) { | |
| 1196 return(-1); | |
| 1197 } | |
| 1198 } | |
| 1199 stretch = swdata->stretch; | |
| 1200 } | |
| 1201 } | |
| 1202 | |
| 1203 if ( stretch ) { | |
| 1204 display = stretch; | |
| 1205 } else { | |
| 1206 display = swdata->display; | |
| 1207 } | |
| 1208 switch (overlay->format) { | |
| 1209 case SDL_YV12_OVERLAY: | |
| 1210 lum = overlay->pixels[0]; | |
| 1211 Cr = overlay->pixels[1]; | |
| 1212 Cb = overlay->pixels[2]; | |
| 1213 break; | |
| 1214 case SDL_IYUV_OVERLAY: | |
| 1215 lum = overlay->pixels[0]; | |
| 1216 Cr = overlay->pixels[2]; | |
| 1217 Cb = overlay->pixels[1]; | |
| 1218 break; | |
| 1219 case SDL_YUY2_OVERLAY: | |
| 1220 lum = overlay->pixels[0]; | |
| 1221 Cr = lum + 3; | |
| 1222 Cb = lum + 1; | |
| 1223 break; | |
| 1224 case SDL_UYVY_OVERLAY: | |
| 1225 lum = overlay->pixels[0]+1; | |
| 1226 Cr = lum + 1; | |
| 1227 Cb = lum - 1; | |
| 1228 break; | |
| 1229 case SDL_YVYU_OVERLAY: | |
| 1230 lum = overlay->pixels[0]; | |
| 1231 Cr = lum + 1; | |
| 1232 Cb = lum + 3; | |
| 1233 break; | |
| 1234 default: | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
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parents:
252
diff
changeset
|
1235 SDL_SetError("Unsupported YUV format in blit"); |
| 0 | 1236 return(-1); |
| 1237 } | |
| 1238 if ( SDL_MUSTLOCK(display) ) { | |
| 1239 if ( SDL_LockSurface(display) < 0 ) { | |
| 1240 return(-1); | |
| 1241 } | |
| 1242 } | |
| 1243 if ( stretch ) { | |
| 1244 dst = (Uint8 *)stretch->pixels; | |
| 1245 } else { | |
| 1246 dst = (Uint8 *)display->pixels | |
| 1247 + dstrect->x * display->format->BytesPerPixel | |
| 1248 + dstrect->y * display->pitch; | |
| 1249 } | |
| 1250 mod = (display->pitch / display->format->BytesPerPixel); | |
| 1251 | |
| 1252 if ( scale_2x ) { | |
| 1253 mod -= (overlay->w * 2); | |
| 1254 swdata->Display2X(swdata->colortab, swdata->rgb_2_pix, | |
| 1255 lum, Cr, Cb, dst, overlay->h, overlay->w,mod); | |
| 1256 } else { | |
| 1257 mod -= overlay->w; | |
| 1258 swdata->Display1X(swdata->colortab, swdata->rgb_2_pix, | |
| 1259 lum, Cr, Cb, dst, overlay->h, overlay->w,mod); | |
| 1260 } | |
| 1261 if ( SDL_MUSTLOCK(display) ) { | |
| 1262 SDL_UnlockSurface(display); | |
| 1263 } | |
| 1264 if ( stretch ) { | |
| 1265 display = swdata->display; | |
| 1266 SDL_SoftStretch(stretch, NULL, display, dstrect); | |
| 1267 } | |
| 1268 SDL_UpdateRects(display, 1, dstrect); | |
| 1269 | |
| 1270 return(0); | |
| 1271 } | |
| 1272 | |
| 1273 void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1274 { | |
| 1275 struct private_yuvhwdata *swdata; | |
| 1276 | |
| 1277 swdata = overlay->hwdata; | |
| 1278 if ( swdata ) { | |
|
9
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1279 if ( swdata->stretch ) { |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1280 SDL_FreeSurface(swdata->stretch); |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1281 } |
| 0 | 1282 if ( swdata->pixels ) { |
| 1283 free(swdata->pixels); | |
| 1284 } | |
| 1285 if ( swdata->colortab ) { | |
| 1286 free(swdata->colortab); | |
| 1287 } | |
| 1288 if ( swdata->rgb_2_pix ) { | |
| 1289 free(swdata->rgb_2_pix); | |
| 1290 } | |
| 1291 free(swdata); | |
| 1292 } | |
| 1293 } |