Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv_sw.c @ 746:72ef7ce609ef
Greatly simplified the SDL CPU info code
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 24 Nov 2003 09:22:12 +0000 |
| parents | 22dbf364c017 |
| children | b8d311d90021 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
297
f6ffac90895c
Updated copyright information for 2002
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|
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 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 | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
252
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Updated the source with the correct e-mail address
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|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* This is the software implementation of the YUV video overlay support */ | |
| 29 | |
| 30 /* This code was derived from code carrying the following copyright notices: | |
| 31 | |
| 32 * Copyright (c) 1995 The Regents of the University of California. | |
| 33 * All rights reserved. | |
| 34 * | |
| 35 * Permission to use, copy, modify, and distribute this software and its | |
| 36 * documentation for any purpose, without fee, and without written agreement is | |
| 37 * hereby granted, provided that the above copyright notice and the following | |
| 38 * two paragraphs appear in all copies of this software. | |
| 39 * | |
| 40 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR | |
| 41 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT | |
| 42 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF | |
| 43 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 44 * | |
| 45 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, | |
| 46 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | |
| 47 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | |
| 48 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO | |
| 49 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 50 | |
| 51 * Copyright (c) 1995 Erik Corry | |
| 52 * All rights reserved. | |
| 53 * | |
| 54 * Permission to use, copy, modify, and distribute this software and its | |
| 55 * documentation for any purpose, without fee, and without written agreement is | |
| 56 * hereby granted, provided that the above copyright notice and the following | |
| 57 * two paragraphs appear in all copies of this software. | |
| 58 * | |
| 59 * IN NO EVENT SHALL ERIK CORRY BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, | |
| 60 * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF | |
| 61 * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF ERIK CORRY HAS BEEN ADVISED | |
| 62 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 63 * | |
| 64 * ERIK CORRY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT | |
| 65 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
| 66 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" | |
| 67 * BASIS, AND ERIK CORRY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, | |
| 68 * UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 69 | |
| 70 * Portions of this software Copyright (c) 1995 Brown University. | |
| 71 * All rights reserved. | |
| 72 * | |
| 73 * Permission to use, copy, modify, and distribute this software and its | |
| 74 * documentation for any purpose, without fee, and without written agreement | |
| 75 * is hereby granted, provided that the above copyright notice and the | |
| 76 * following two paragraphs appear in all copies of this software. | |
| 77 * | |
| 78 * IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR | |
| 79 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT | |
| 80 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN | |
| 81 * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 82 * | |
| 83 * BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT | |
| 84 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
| 85 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" | |
| 86 * BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, | |
| 87 * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 88 */ | |
| 89 | |
| 90 #include <stdlib.h> | |
| 91 #include <string.h> | |
| 92 | |
| 93 #include "SDL_error.h" | |
| 94 #include "SDL_video.h" | |
|
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|
95 #include "SDL_cpuinfo.h" |
| 0 | 96 #include "SDL_stretch_c.h" |
| 97 #include "SDL_yuvfuncs.h" | |
| 98 #include "SDL_yuv_sw_c.h" | |
| 99 | |
| 100 /* The functions used to manipulate software video overlays */ | |
| 101 static struct private_yuvhwfuncs sw_yuvfuncs = { | |
| 102 SDL_LockYUV_SW, | |
| 103 SDL_UnlockYUV_SW, | |
| 104 SDL_DisplayYUV_SW, | |
| 105 SDL_FreeYUV_SW | |
| 106 }; | |
| 107 | |
| 108 /* RGB conversion lookup tables */ | |
| 109 struct private_yuvhwdata { | |
| 110 SDL_Surface *stretch; | |
| 111 SDL_Surface *display; | |
| 112 Uint8 *pixels; | |
| 113 int *colortab; | |
| 114 Uint32 *rgb_2_pix; | |
| 115 void (*Display1X)(int *colortab, Uint32 *rgb_2_pix, | |
| 116 unsigned char *lum, unsigned char *cr, | |
| 117 unsigned char *cb, unsigned char *out, | |
| 118 int rows, int cols, int mod ); | |
| 119 void (*Display2X)(int *colortab, Uint32 *rgb_2_pix, | |
| 120 unsigned char *lum, unsigned char *cr, | |
| 121 unsigned char *cb, unsigned char *out, | |
| 122 int rows, int cols, int mod ); | |
| 123 | |
| 124 /* These are just so we don't have to allocate them separately */ | |
| 125 Uint16 pitches[3]; | |
| 126 Uint8 *planes[3]; | |
| 127 }; | |
| 128 | |
| 129 | |
| 130 /* The colorspace conversion functions */ | |
| 131 | |
| 132 extern void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, | |
| 133 unsigned char *lum, unsigned char *cr, | |
| 134 unsigned char *cb, unsigned char *out, | |
| 135 int rows, int cols, int mod ); | |
| 136 extern void ColorRGBDitherYV12MMX1X( 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 static void Color16DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 142 unsigned char *lum, unsigned char *cr, | |
| 143 unsigned char *cb, unsigned char *out, | |
| 144 int rows, int cols, int mod ) | |
| 145 { | |
| 146 unsigned short* row1; | |
| 147 unsigned short* row2; | |
| 148 unsigned char* lum2; | |
| 149 int x, y; | |
| 150 int cr_r; | |
| 151 int crb_g; | |
| 152 int cb_b; | |
| 153 int cols_2 = cols / 2; | |
| 154 | |
| 155 row1 = (unsigned short*) out; | |
| 156 row2 = row1 + cols + mod; | |
| 157 lum2 = lum + cols; | |
| 158 | |
| 159 mod += cols + mod; | |
| 160 | |
| 161 y = rows / 2; | |
| 162 while( y-- ) | |
| 163 { | |
| 164 x = cols_2; | |
| 165 while( x-- ) | |
| 166 { | |
| 167 register int L; | |
| 168 | |
| 169 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 170 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 171 + colortab[ *cb + 2*256 ]; | |
| 172 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 173 ++cr; ++cb; | |
| 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 L = *lum++; | |
| 181 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 182 rgb_2_pix[ L + crb_g ] | | |
| 183 rgb_2_pix[ L + cb_b ]); | |
| 184 | |
| 185 | |
| 186 /* Now, do second row. */ | |
| 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 L = *lum2++; | |
| 194 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 195 rgb_2_pix[ L + crb_g ] | | |
| 196 rgb_2_pix[ L + cb_b ]); | |
| 197 } | |
| 198 | |
| 199 /* | |
| 200 * These values are at the start of the next line, (due | |
| 201 * to the ++'s above),but they need to be at the start | |
| 202 * of the line after that. | |
| 203 */ | |
| 204 lum += cols; | |
| 205 lum2 += cols; | |
| 206 row1 += mod; | |
| 207 row2 += mod; | |
| 208 } | |
| 209 } | |
| 210 | |
| 211 static void Color24DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 212 unsigned char *lum, unsigned char *cr, | |
| 213 unsigned char *cb, unsigned char *out, | |
| 214 int rows, int cols, int mod ) | |
| 215 { | |
| 216 unsigned int value; | |
| 217 unsigned char* row1; | |
| 218 unsigned char* row2; | |
| 219 unsigned char* lum2; | |
| 220 int x, y; | |
| 221 int cr_r; | |
| 222 int crb_g; | |
| 223 int cb_b; | |
| 224 int cols_2 = cols / 2; | |
| 225 | |
| 226 row1 = out; | |
| 227 row2 = row1 + cols*3 + mod*3; | |
| 228 lum2 = lum + cols; | |
| 229 | |
| 230 mod += cols + mod; | |
| 231 mod *= 3; | |
| 232 | |
| 233 y = rows / 2; | |
| 234 while( y-- ) | |
| 235 { | |
| 236 x = cols_2; | |
| 237 while( x-- ) | |
| 238 { | |
| 239 register int L; | |
| 240 | |
| 241 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 242 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 243 + colortab[ *cb + 2*256 ]; | |
| 244 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 245 ++cr; ++cb; | |
| 246 | |
| 247 L = *lum++; | |
| 248 value = (rgb_2_pix[ L + cr_r ] | | |
| 249 rgb_2_pix[ L + crb_g ] | | |
| 250 rgb_2_pix[ L + cb_b ]); | |
| 251 *row1++ = (value ) & 0xFF; | |
| 252 *row1++ = (value >> 8) & 0xFF; | |
| 253 *row1++ = (value >> 16) & 0xFF; | |
| 254 | |
| 255 L = *lum++; | |
| 256 value = (rgb_2_pix[ L + cr_r ] | | |
| 257 rgb_2_pix[ L + crb_g ] | | |
| 258 rgb_2_pix[ L + cb_b ]); | |
| 259 *row1++ = (value ) & 0xFF; | |
| 260 *row1++ = (value >> 8) & 0xFF; | |
| 261 *row1++ = (value >> 16) & 0xFF; | |
| 262 | |
| 263 | |
| 264 /* Now, do second row. */ | |
| 265 | |
| 266 L = *lum2++; | |
| 267 value = (rgb_2_pix[ L + cr_r ] | | |
| 268 rgb_2_pix[ L + crb_g ] | | |
| 269 rgb_2_pix[ L + cb_b ]); | |
| 270 *row2++ = (value ) & 0xFF; | |
| 271 *row2++ = (value >> 8) & 0xFF; | |
| 272 *row2++ = (value >> 16) & 0xFF; | |
| 273 | |
| 274 L = *lum2++; | |
| 275 value = (rgb_2_pix[ L + cr_r ] | | |
| 276 rgb_2_pix[ L + crb_g ] | | |
| 277 rgb_2_pix[ L + cb_b ]); | |
| 278 *row2++ = (value ) & 0xFF; | |
| 279 *row2++ = (value >> 8) & 0xFF; | |
| 280 *row2++ = (value >> 16) & 0xFF; | |
| 281 } | |
| 282 | |
| 283 /* | |
| 284 * These values are at the start of the next line, (due | |
| 285 * to the ++'s above),but they need to be at the start | |
| 286 * of the line after that. | |
| 287 */ | |
| 288 lum += cols; | |
| 289 lum2 += cols; | |
| 290 row1 += mod; | |
| 291 row2 += mod; | |
| 292 } | |
| 293 } | |
| 294 | |
| 295 static void Color32DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 296 unsigned char *lum, unsigned char *cr, | |
| 297 unsigned char *cb, unsigned char *out, | |
| 298 int rows, int cols, int mod ) | |
| 299 { | |
| 300 unsigned int* row1; | |
| 301 unsigned int* row2; | |
| 302 unsigned char* lum2; | |
| 303 int x, y; | |
| 304 int cr_r; | |
| 305 int crb_g; | |
| 306 int cb_b; | |
| 307 int cols_2 = cols / 2; | |
| 308 | |
| 309 row1 = (unsigned int*) out; | |
| 310 row2 = row1 + cols + mod; | |
| 311 lum2 = lum + cols; | |
| 312 | |
| 313 mod += cols + mod; | |
| 314 | |
| 315 y = rows / 2; | |
| 316 while( y-- ) | |
| 317 { | |
| 318 x = cols_2; | |
| 319 while( x-- ) | |
| 320 { | |
| 321 register int L; | |
| 322 | |
| 323 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 324 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 325 + colortab[ *cb + 2*256 ]; | |
| 326 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 327 ++cr; ++cb; | |
| 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 L = *lum++; | |
| 335 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 336 rgb_2_pix[ L + crb_g ] | | |
| 337 rgb_2_pix[ L + cb_b ]); | |
| 338 | |
| 339 | |
| 340 /* Now, do second row. */ | |
| 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 L = *lum2++; | |
| 348 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 349 rgb_2_pix[ L + crb_g ] | | |
| 350 rgb_2_pix[ L + cb_b ]); | |
| 351 } | |
| 352 | |
| 353 /* | |
| 354 * These values are at the start of the next line, (due | |
| 355 * to the ++'s above),but they need to be at the start | |
| 356 * of the line after that. | |
| 357 */ | |
| 358 lum += cols; | |
| 359 lum2 += cols; | |
| 360 row1 += mod; | |
| 361 row2 += mod; | |
| 362 } | |
| 363 } | |
| 364 | |
| 365 /* | |
| 366 * In this function I make use of a nasty trick. The tables have the lower | |
| 367 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 368 * the horisontal doubling for free (almost). | |
| 369 */ | |
| 370 static void Color16DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 371 unsigned char *lum, unsigned char *cr, | |
| 372 unsigned char *cb, unsigned char *out, | |
| 373 int rows, int cols, int mod ) | |
| 374 { | |
| 375 unsigned int* row1 = (unsigned int*) out; | |
| 376 const int next_row = cols+(mod/2); | |
| 377 unsigned int* row2 = row1 + 2*next_row; | |
| 378 unsigned char* lum2; | |
| 379 int x, y; | |
| 380 int cr_r; | |
| 381 int crb_g; | |
| 382 int cb_b; | |
| 383 int cols_2 = cols / 2; | |
| 384 | |
| 385 lum2 = lum + cols; | |
| 386 | |
| 387 mod = (next_row * 3) + (mod/2); | |
| 388 | |
| 389 y = rows / 2; | |
| 390 while( y-- ) | |
| 391 { | |
| 392 x = cols_2; | |
| 393 while( x-- ) | |
| 394 { | |
| 395 register int L; | |
| 396 | |
| 397 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 398 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 399 + colortab[ *cb + 2*256 ]; | |
| 400 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 401 ++cr; ++cb; | |
| 402 | |
| 403 L = *lum++; | |
| 404 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 405 rgb_2_pix[ L + crb_g ] | | |
| 406 rgb_2_pix[ L + cb_b ]); | |
| 407 row1++; | |
| 408 | |
| 409 L = *lum++; | |
| 410 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 411 rgb_2_pix[ L + crb_g ] | | |
| 412 rgb_2_pix[ L + cb_b ]); | |
| 413 row1++; | |
| 414 | |
| 415 | |
| 416 /* Now, do second row. */ | |
| 417 | |
| 418 L = *lum2++; | |
| 419 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 420 rgb_2_pix[ L + crb_g ] | | |
| 421 rgb_2_pix[ L + cb_b ]); | |
| 422 row2++; | |
| 423 | |
| 424 L = *lum2++; | |
| 425 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 426 rgb_2_pix[ L + crb_g ] | | |
| 427 rgb_2_pix[ L + cb_b ]); | |
| 428 row2++; | |
| 429 } | |
| 430 | |
| 431 /* | |
| 432 * These values are at the start of the next line, (due | |
| 433 * to the ++'s above),but they need to be at the start | |
| 434 * of the line after that. | |
| 435 */ | |
| 436 lum += cols; | |
| 437 lum2 += cols; | |
| 438 row1 += mod; | |
| 439 row2 += mod; | |
| 440 } | |
| 441 } | |
| 442 | |
| 443 static void Color24DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 444 unsigned char *lum, unsigned char *cr, | |
| 445 unsigned char *cb, unsigned char *out, | |
| 446 int rows, int cols, int mod ) | |
| 447 { | |
| 448 unsigned int value; | |
| 449 unsigned char* row1 = out; | |
| 450 const int next_row = (cols*2 + mod) * 3; | |
| 451 unsigned char* row2 = row1 + 2*next_row; | |
| 452 unsigned char* lum2; | |
| 453 int x, y; | |
| 454 int cr_r; | |
| 455 int crb_g; | |
| 456 int cb_b; | |
| 457 int cols_2 = cols / 2; | |
| 458 | |
| 459 lum2 = lum + cols; | |
| 460 | |
| 461 mod = next_row*3 + mod*3; | |
| 462 | |
| 463 y = rows / 2; | |
| 464 while( y-- ) | |
| 465 { | |
| 466 x = cols_2; | |
| 467 while( x-- ) | |
| 468 { | |
| 469 register int L; | |
| 470 | |
| 471 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 472 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 473 + colortab[ *cb + 2*256 ]; | |
| 474 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 475 ++cr; ++cb; | |
| 476 | |
| 477 L = *lum++; | |
| 478 value = (rgb_2_pix[ L + cr_r ] | | |
| 479 rgb_2_pix[ L + crb_g ] | | |
| 480 rgb_2_pix[ L + cb_b ]); | |
| 481 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 482 (value ) & 0xFF; | |
| 483 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 484 (value >> 8) & 0xFF; | |
| 485 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 486 (value >> 16) & 0xFF; | |
| 487 row1 += 2*3; | |
| 488 | |
| 489 L = *lum++; | |
| 490 value = (rgb_2_pix[ L + cr_r ] | | |
| 491 rgb_2_pix[ L + crb_g ] | | |
| 492 rgb_2_pix[ L + cb_b ]); | |
| 493 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 494 (value ) & 0xFF; | |
| 495 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 496 (value >> 8) & 0xFF; | |
| 497 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 498 (value >> 16) & 0xFF; | |
| 499 row1 += 2*3; | |
| 500 | |
| 501 | |
| 502 /* Now, do second row. */ | |
| 503 | |
| 504 L = *lum2++; | |
| 505 value = (rgb_2_pix[ L + cr_r ] | | |
| 506 rgb_2_pix[ L + crb_g ] | | |
| 507 rgb_2_pix[ L + cb_b ]); | |
| 508 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 509 (value ) & 0xFF; | |
| 510 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 511 (value >> 8) & 0xFF; | |
| 512 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 513 (value >> 16) & 0xFF; | |
| 514 row2 += 2*3; | |
| 515 | |
| 516 L = *lum2++; | |
| 517 value = (rgb_2_pix[ L + cr_r ] | | |
| 518 rgb_2_pix[ L + crb_g ] | | |
| 519 rgb_2_pix[ L + cb_b ]); | |
| 520 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 521 (value ) & 0xFF; | |
| 522 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 523 (value >> 8) & 0xFF; | |
| 524 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 525 (value >> 16) & 0xFF; | |
| 526 row2 += 2*3; | |
| 527 } | |
| 528 | |
| 529 /* | |
| 530 * These values are at the start of the next line, (due | |
| 531 * to the ++'s above),but they need to be at the start | |
| 532 * of the line after that. | |
| 533 */ | |
| 534 lum += cols; | |
| 535 lum2 += cols; | |
| 536 row1 += mod; | |
| 537 row2 += mod; | |
| 538 } | |
| 539 } | |
| 540 | |
| 541 static void Color32DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 542 unsigned char *lum, unsigned char *cr, | |
| 543 unsigned char *cb, unsigned char *out, | |
| 544 int rows, int cols, int mod ) | |
| 545 { | |
| 546 unsigned int* row1 = (unsigned int*) out; | |
| 547 const int next_row = cols*2+mod; | |
| 548 unsigned int* row2 = row1 + 2*next_row; | |
| 549 unsigned char* lum2; | |
| 550 int x, y; | |
| 551 int cr_r; | |
| 552 int crb_g; | |
| 553 int cb_b; | |
| 554 int cols_2 = cols / 2; | |
| 555 | |
| 556 lum2 = lum + cols; | |
| 557 | |
| 558 mod = (next_row * 3) + mod; | |
| 559 | |
| 560 y = rows / 2; | |
| 561 while( y-- ) | |
| 562 { | |
| 563 x = cols_2; | |
| 564 while( x-- ) | |
| 565 { | |
| 566 register int L; | |
| 567 | |
| 568 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 569 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 570 + colortab[ *cb + 2*256 ]; | |
| 571 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 572 ++cr; ++cb; | |
| 573 | |
| 574 L = *lum++; | |
| 575 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = | |
| 576 (rgb_2_pix[ L + cr_r ] | | |
| 577 rgb_2_pix[ L + crb_g ] | | |
| 578 rgb_2_pix[ L + cb_b ]); | |
| 579 row1 += 2; | |
| 580 | |
| 581 L = *lum++; | |
| 582 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = | |
| 583 (rgb_2_pix[ L + cr_r ] | | |
| 584 rgb_2_pix[ L + crb_g ] | | |
| 585 rgb_2_pix[ L + cb_b ]); | |
| 586 row1 += 2; | |
| 587 | |
| 588 | |
| 589 /* Now, do second row. */ | |
| 590 | |
| 591 L = *lum2++; | |
| 592 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 593 (rgb_2_pix[ L + cr_r ] | | |
| 594 rgb_2_pix[ L + crb_g ] | | |
| 595 rgb_2_pix[ L + cb_b ]); | |
| 596 row2 += 2; | |
| 597 | |
| 598 L = *lum2++; | |
| 599 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 600 (rgb_2_pix[ L + cr_r ] | | |
| 601 rgb_2_pix[ L + crb_g ] | | |
| 602 rgb_2_pix[ L + cb_b ]); | |
| 603 row2 += 2; | |
| 604 } | |
| 605 | |
| 606 /* | |
| 607 * These values are at the start of the next line, (due | |
| 608 * to the ++'s above),but they need to be at the start | |
| 609 * of the line after that. | |
| 610 */ | |
| 611 lum += cols; | |
| 612 lum2 += cols; | |
| 613 row1 += mod; | |
| 614 row2 += mod; | |
| 615 } | |
| 616 } | |
| 617 | |
| 618 static void Color16DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 619 unsigned char *lum, unsigned char *cr, | |
| 620 unsigned char *cb, unsigned char *out, | |
| 621 int rows, int cols, int mod ) | |
| 622 { | |
| 623 unsigned short* row; | |
| 624 int x, y; | |
| 625 int cr_r; | |
| 626 int crb_g; | |
| 627 int cb_b; | |
| 628 int cols_2 = cols / 2; | |
| 629 | |
| 630 row = (unsigned short*) out; | |
| 631 | |
| 632 y = rows; | |
| 633 while( y-- ) | |
| 634 { | |
| 635 x = cols_2; | |
| 636 while( x-- ) | |
| 637 { | |
| 638 register int L; | |
| 639 | |
| 640 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 641 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 642 + colortab[ *cb + 2*256 ]; | |
| 643 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 644 cr += 4; cb += 4; | |
| 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 L = *lum; lum += 2; | |
| 652 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 653 rgb_2_pix[ L + crb_g ] | | |
| 654 rgb_2_pix[ L + cb_b ]); | |
| 655 | |
| 656 } | |
| 657 | |
| 658 row += mod; | |
| 659 } | |
| 660 } | |
| 661 | |
| 662 static void Color24DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 663 unsigned char *lum, unsigned char *cr, | |
| 664 unsigned char *cb, unsigned char *out, | |
| 665 int rows, int cols, int mod ) | |
| 666 { | |
| 667 unsigned int value; | |
| 668 unsigned char* row; | |
| 669 int x, y; | |
| 670 int cr_r; | |
| 671 int crb_g; | |
| 672 int cb_b; | |
| 673 int cols_2 = cols / 2; | |
| 674 | |
| 675 row = (unsigned char*) out; | |
| 676 mod *= 3; | |
| 677 y = rows; | |
| 678 while( y-- ) | |
| 679 { | |
| 680 x = cols_2; | |
| 681 while( x-- ) | |
| 682 { | |
| 683 register int L; | |
| 684 | |
| 685 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 686 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 687 + colortab[ *cb + 2*256 ]; | |
| 688 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 689 cr += 4; cb += 4; | |
| 690 | |
| 691 L = *lum; lum += 2; | |
| 692 value = (rgb_2_pix[ L + cr_r ] | | |
| 693 rgb_2_pix[ L + crb_g ] | | |
| 694 rgb_2_pix[ L + cb_b ]); | |
| 695 *row++ = (value ) & 0xFF; | |
| 696 *row++ = (value >> 8) & 0xFF; | |
| 697 *row++ = (value >> 16) & 0xFF; | |
| 698 | |
| 699 L = *lum; lum += 2; | |
| 700 value = (rgb_2_pix[ L + cr_r ] | | |
| 701 rgb_2_pix[ L + crb_g ] | | |
| 702 rgb_2_pix[ L + cb_b ]); | |
| 703 *row++ = (value ) & 0xFF; | |
| 704 *row++ = (value >> 8) & 0xFF; | |
| 705 *row++ = (value >> 16) & 0xFF; | |
| 706 | |
| 707 } | |
| 708 row += mod; | |
| 709 } | |
| 710 } | |
| 711 | |
| 712 static void Color32DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 713 unsigned char *lum, unsigned char *cr, | |
| 714 unsigned char *cb, unsigned char *out, | |
| 715 int rows, int cols, int mod ) | |
| 716 { | |
| 717 unsigned int* row; | |
| 718 int x, y; | |
| 719 int cr_r; | |
| 720 int crb_g; | |
| 721 int cb_b; | |
| 722 int cols_2 = cols / 2; | |
| 723 | |
| 724 row = (unsigned int*) out; | |
| 725 y = rows; | |
| 726 while( y-- ) | |
| 727 { | |
| 728 x = cols_2; | |
| 729 while( x-- ) | |
| 730 { | |
| 731 register int L; | |
| 732 | |
| 733 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 734 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 735 + colortab[ *cb + 2*256 ]; | |
| 736 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 737 cr += 4; cb += 4; | |
| 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 L = *lum; lum += 2; | |
| 745 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 746 rgb_2_pix[ L + crb_g ] | | |
| 747 rgb_2_pix[ L + cb_b ]); | |
| 748 | |
| 749 | |
| 750 } | |
| 751 row += mod; | |
| 752 } | |
| 753 } | |
| 754 | |
| 755 /* | |
| 756 * In this function I make use of a nasty trick. The tables have the lower | |
| 757 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 758 * the horisontal doubling for free (almost). | |
| 759 */ | |
| 760 static void Color16DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 761 unsigned char *lum, unsigned char *cr, | |
| 762 unsigned char *cb, unsigned char *out, | |
| 763 int rows, int cols, int mod ) | |
| 764 { | |
| 765 unsigned int* row = (unsigned int*) out; | |
| 766 const int next_row = cols+(mod/2); | |
| 767 int x, y; | |
| 768 int cr_r; | |
| 769 int crb_g; | |
| 770 int cb_b; | |
| 771 int cols_2 = cols / 2; | |
| 772 | |
| 773 y = rows; | |
| 774 while( y-- ) | |
| 775 { | |
| 776 x = cols_2; | |
| 777 while( x-- ) | |
| 778 { | |
| 779 register int L; | |
| 780 | |
| 781 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 782 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 783 + colortab[ *cb + 2*256 ]; | |
| 784 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 785 cr += 4; cb += 4; | |
| 786 | |
| 787 L = *lum; lum += 2; | |
| 788 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 789 rgb_2_pix[ L + crb_g ] | | |
| 790 rgb_2_pix[ L + cb_b ]); | |
| 791 row++; | |
| 792 | |
| 793 L = *lum; lum += 2; | |
| 794 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 795 rgb_2_pix[ L + crb_g ] | | |
| 796 rgb_2_pix[ L + cb_b ]); | |
| 797 row++; | |
| 798 | |
| 799 } | |
| 800 row += next_row; | |
| 801 } | |
| 802 } | |
| 803 | |
| 804 static void Color24DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 805 unsigned char *lum, unsigned char *cr, | |
| 806 unsigned char *cb, unsigned char *out, | |
| 807 int rows, int cols, int mod ) | |
| 808 { | |
| 809 unsigned int value; | |
| 810 unsigned char* row = out; | |
| 811 const int next_row = (cols*2 + mod) * 3; | |
| 812 int x, y; | |
| 813 int cr_r; | |
| 814 int crb_g; | |
| 815 int cb_b; | |
| 816 int cols_2 = cols / 2; | |
| 817 y = rows; | |
| 818 while( y-- ) | |
| 819 { | |
| 820 x = cols_2; | |
| 821 while( x-- ) | |
| 822 { | |
| 823 register int L; | |
| 824 | |
| 825 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 826 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 827 + colortab[ *cb + 2*256 ]; | |
| 828 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 829 cr += 4; cb += 4; | |
| 830 | |
| 831 L = *lum; lum += 2; | |
| 832 value = (rgb_2_pix[ L + cr_r ] | | |
| 833 rgb_2_pix[ L + crb_g ] | | |
| 834 rgb_2_pix[ L + cb_b ]); | |
| 835 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 836 (value ) & 0xFF; | |
| 837 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 838 (value >> 8) & 0xFF; | |
| 839 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 840 (value >> 16) & 0xFF; | |
| 841 row += 2*3; | |
| 842 | |
| 843 L = *lum; lum += 2; | |
| 844 value = (rgb_2_pix[ L + cr_r ] | | |
| 845 rgb_2_pix[ L + crb_g ] | | |
| 846 rgb_2_pix[ L + cb_b ]); | |
| 847 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 848 (value ) & 0xFF; | |
| 849 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 850 (value >> 8) & 0xFF; | |
| 851 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 852 (value >> 16) & 0xFF; | |
| 853 row += 2*3; | |
| 854 | |
| 855 } | |
| 856 row += next_row; | |
| 857 } | |
| 858 } | |
| 859 | |
| 860 static void Color32DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 861 unsigned char *lum, unsigned char *cr, | |
| 862 unsigned char *cb, unsigned char *out, | |
| 863 int rows, int cols, int mod ) | |
| 864 { | |
| 865 unsigned int* row = (unsigned int*) out; | |
| 866 const int next_row = cols*2+mod; | |
| 867 int x, y; | |
| 868 int cr_r; | |
| 869 int crb_g; | |
| 870 int cb_b; | |
| 871 int cols_2 = cols / 2; | |
| 872 mod+=mod; | |
| 873 y = rows; | |
| 874 while( y-- ) | |
| 875 { | |
| 876 x = cols_2; | |
| 877 while( x-- ) | |
| 878 { | |
| 879 register int L; | |
| 880 | |
| 881 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 882 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 883 + colortab[ *cb + 2*256 ]; | |
| 884 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 885 cr += 4; cb += 4; | |
| 886 | |
| 887 L = *lum; lum += 2; | |
| 888 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 889 (rgb_2_pix[ L + cr_r ] | | |
| 890 rgb_2_pix[ L + crb_g ] | | |
| 891 rgb_2_pix[ L + cb_b ]); | |
| 892 row += 2; | |
| 893 | |
| 894 L = *lum; lum += 2; | |
| 895 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 896 (rgb_2_pix[ L + cr_r ] | | |
| 897 rgb_2_pix[ L + crb_g ] | | |
| 898 rgb_2_pix[ L + cb_b ]); | |
| 899 row += 2; | |
| 900 | |
| 901 | |
| 902 } | |
| 903 | |
| 904 row += next_row; | |
| 905 } | |
| 906 } | |
| 907 | |
| 908 /* | |
| 909 * How many 1 bits are there in the Uint32. | |
| 910 * Low performance, do not call often. | |
| 911 */ | |
| 912 static int number_of_bits_set( Uint32 a ) | |
| 913 { | |
| 914 if(!a) return 0; | |
| 915 if(a & 1) return 1 + number_of_bits_set(a >> 1); | |
| 916 return(number_of_bits_set(a >> 1)); | |
| 917 } | |
| 918 | |
| 919 /* | |
| 920 * How many 0 bits are there at least significant end of Uint32. | |
| 921 * Low performance, do not call often. | |
| 922 */ | |
| 923 static int free_bits_at_bottom( Uint32 a ) | |
| 924 { | |
| 925 /* assume char is 8 bits */ | |
| 926 if(!a) return sizeof(Uint32) * 8; | |
| 927 if(((Sint32)a) & 1l) return 0; | |
| 928 return 1 + free_bits_at_bottom ( a >> 1); | |
| 929 } | |
| 930 | |
| 931 | |
| 932 SDL_Overlay *SDL_CreateYUV_SW(_THIS, int width, int height, Uint32 format, SDL_Surface *display) | |
| 933 { | |
| 934 SDL_Overlay *overlay; | |
| 935 struct private_yuvhwdata *swdata; | |
| 936 int *Cr_r_tab; | |
| 937 int *Cr_g_tab; | |
| 938 int *Cb_g_tab; | |
| 939 int *Cb_b_tab; | |
| 940 Uint32 *r_2_pix_alloc; | |
| 941 Uint32 *g_2_pix_alloc; | |
| 942 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
|
943 int i; |
| 0 | 944 int CR, CB; |
| 945 Uint32 Rmask, Gmask, Bmask; | |
| 946 | |
| 947 /* Only RGB packed pixel conversion supported */ | |
| 948 if ( (display->format->BytesPerPixel != 2) && | |
| 949 (display->format->BytesPerPixel != 3) && | |
| 950 (display->format->BytesPerPixel != 4) ) { | |
| 951 SDL_SetError("Can't use YUV data on non 16/24/32 bit surfaces"); | |
| 952 return(NULL); | |
| 953 } | |
| 954 | |
| 955 /* Verify that we support the format */ | |
| 956 switch (format) { | |
| 957 case SDL_YV12_OVERLAY: | |
| 958 case SDL_IYUV_OVERLAY: | |
| 959 case SDL_YUY2_OVERLAY: | |
| 960 case SDL_UYVY_OVERLAY: | |
| 961 case SDL_YVYU_OVERLAY: | |
| 962 break; | |
| 963 default: | |
| 964 SDL_SetError("Unsupported YUV format"); | |
| 965 return(NULL); | |
| 966 } | |
| 967 | |
| 968 /* Create the overlay structure */ | |
| 969 overlay = (SDL_Overlay *)malloc(sizeof *overlay); | |
| 970 if ( overlay == NULL ) { | |
| 971 SDL_OutOfMemory(); | |
| 972 return(NULL); | |
| 973 } | |
| 974 memset(overlay, 0, (sizeof *overlay)); | |
| 975 | |
| 976 /* Fill in the basic members */ | |
| 977 overlay->format = format; | |
| 978 overlay->w = width; | |
| 979 overlay->h = height; | |
| 980 | |
| 981 /* Set up the YUV surface function structure */ | |
| 982 overlay->hwfuncs = &sw_yuvfuncs; | |
| 983 | |
| 984 /* Create the pixel data and lookup tables */ | |
| 985 swdata = (struct private_yuvhwdata *)malloc(sizeof *swdata); | |
| 986 overlay->hwdata = swdata; | |
| 987 if ( swdata == NULL ) { | |
| 988 SDL_OutOfMemory(); | |
| 989 SDL_FreeYUVOverlay(overlay); | |
| 990 return(NULL); | |
| 991 } | |
| 992 swdata->stretch = NULL; | |
| 993 swdata->display = display; | |
| 994 swdata->pixels = (Uint8 *) malloc(width*height*2); | |
| 995 swdata->colortab = (int *)malloc(4*256*sizeof(int)); | |
| 996 Cr_r_tab = &swdata->colortab[0*256]; | |
| 997 Cr_g_tab = &swdata->colortab[1*256]; | |
| 998 Cb_g_tab = &swdata->colortab[2*256]; | |
| 999 Cb_b_tab = &swdata->colortab[3*256]; | |
| 1000 swdata->rgb_2_pix = (Uint32 *)malloc(3*768*sizeof(Uint32)); | |
| 1001 r_2_pix_alloc = &swdata->rgb_2_pix[0*768]; | |
| 1002 g_2_pix_alloc = &swdata->rgb_2_pix[1*768]; | |
| 1003 b_2_pix_alloc = &swdata->rgb_2_pix[2*768]; | |
| 1004 if ( ! swdata->pixels || ! swdata->colortab || ! swdata->rgb_2_pix ) { | |
| 1005 SDL_OutOfMemory(); | |
| 1006 SDL_FreeYUVOverlay(overlay); | |
| 1007 return(NULL); | |
| 1008 } | |
| 1009 | |
| 1010 /* Generate the tables for the display surface */ | |
| 1011 for (i=0; i<256; i++) { | |
| 1012 /* Gamma correction (luminescence table) and chroma correction | |
| 1013 would be done here. See the Berkeley mpeg_play sources. | |
| 1014 */ | |
| 1015 CB = CR = (i-128); | |
| 1016 Cr_r_tab[i] = (int) ( (0.419/0.299) * CR); | |
| 1017 Cr_g_tab[i] = (int) (-(0.299/0.419) * CR); | |
| 1018 Cb_g_tab[i] = (int) (-(0.114/0.331) * CB); | |
| 1019 Cb_b_tab[i] = (int) ( (0.587/0.331) * CB); | |
| 1020 } | |
| 1021 | |
| 1022 /* | |
| 1023 * Set up entries 0-255 in rgb-to-pixel value tables. | |
| 1024 */ | |
| 1025 Rmask = display->format->Rmask; | |
| 1026 Gmask = display->format->Gmask; | |
| 1027 Bmask = display->format->Bmask; | |
| 1028 for ( i=0; i<256; ++i ) { | |
| 1029 r_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Rmask)); | |
| 1030 r_2_pix_alloc[i+256] <<= free_bits_at_bottom(Rmask); | |
| 1031 g_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Gmask)); | |
| 1032 g_2_pix_alloc[i+256] <<= free_bits_at_bottom(Gmask); | |
| 1033 b_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Bmask)); | |
| 1034 b_2_pix_alloc[i+256] <<= free_bits_at_bottom(Bmask); | |
| 1035 } | |
| 1036 | |
| 1037 /* | |
| 1038 * If we have 16-bit output depth, then we double the value | |
| 1039 * in the top word. This means that we can write out both | |
| 1040 * pixels in the pixel doubling mode with one op. It is | |
| 1041 * harmless in the normal case as storing a 32-bit value | |
| 1042 * through a short pointer will lose the top bits anyway. | |
| 1043 */ | |
| 1044 if( display->format->BytesPerPixel == 2 ) { | |
| 1045 for ( i=0; i<256; ++i ) { | |
| 1046 r_2_pix_alloc[i+256] |= (r_2_pix_alloc[i+256]) << 16; | |
| 1047 g_2_pix_alloc[i+256] |= (g_2_pix_alloc[i+256]) << 16; | |
| 1048 b_2_pix_alloc[i+256] |= (b_2_pix_alloc[i+256]) << 16; | |
| 1049 } | |
| 1050 } | |
| 1051 | |
| 1052 /* | |
| 1053 * Spread out the values we have to the rest of the array so that | |
| 1054 * we do not need to check for overflow. | |
| 1055 */ | |
| 1056 for ( i=0; i<256; ++i ) { | |
| 1057 r_2_pix_alloc[i] = r_2_pix_alloc[256]; | |
| 1058 r_2_pix_alloc[i+512] = r_2_pix_alloc[511]; | |
| 1059 g_2_pix_alloc[i] = g_2_pix_alloc[256]; | |
| 1060 g_2_pix_alloc[i+512] = g_2_pix_alloc[511]; | |
| 1061 b_2_pix_alloc[i] = b_2_pix_alloc[256]; | |
| 1062 b_2_pix_alloc[i+512] = b_2_pix_alloc[511]; | |
| 1063 } | |
| 1064 | |
| 1065 /* You have chosen wisely... */ | |
| 1066 switch (format) { | |
| 1067 case SDL_YV12_OVERLAY: | |
| 1068 case SDL_IYUV_OVERLAY: | |
| 1069 if ( display->format->BytesPerPixel == 2 ) { | |
| 1070 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) | |
| 1071 /* inline assembly functions */ | |
|
739
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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366
diff
changeset
|
1072 if ( SDL_HasMMX() && (Rmask == 0xF800) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
366
diff
changeset
|
1073 (Gmask == 0x07E0) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
366
diff
changeset
|
1074 (Bmask == 0x001F) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
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changeset
|
1075 (width & 15) == 0) { |
| 0 | 1076 /*printf("Using MMX 16-bit 565 dither\n");*/ |
| 1077 swdata->Display1X = Color565DitherYV12MMX1X; | |
| 1078 } else { | |
| 1079 /*printf("Using C 16-bit dither\n");*/ | |
| 1080 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1081 } | |
| 1082 #else | |
| 1083 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1084 #endif | |
| 1085 swdata->Display2X = Color16DitherYV12Mod2X; | |
| 1086 } | |
| 1087 if ( display->format->BytesPerPixel == 3 ) { | |
| 1088 swdata->Display1X = Color24DitherYV12Mod1X; | |
| 1089 swdata->Display2X = Color24DitherYV12Mod2X; | |
| 1090 } | |
| 1091 if ( display->format->BytesPerPixel == 4 ) { | |
| 1092 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) | |
| 1093 /* inline assembly functions */ | |
|
739
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
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diff
changeset
|
1094 if ( SDL_HasMMX() && (Rmask == 0x00FF0000) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
366
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changeset
|
1095 (Gmask == 0x0000FF00) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
366
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changeset
|
1096 (Bmask == 0x000000FF) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
366
diff
changeset
|
1097 (width & 15) == 0) { |
| 0 | 1098 /*printf("Using MMX 32-bit dither\n");*/ |
| 1099 swdata->Display1X = ColorRGBDitherYV12MMX1X; | |
| 1100 } else { | |
| 1101 /*printf("Using C 32-bit dither\n");*/ | |
| 1102 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1103 } | |
| 1104 #else | |
| 1105 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1106 #endif | |
| 1107 swdata->Display2X = Color32DitherYV12Mod2X; | |
| 1108 } | |
| 1109 break; | |
| 1110 case SDL_YUY2_OVERLAY: | |
| 1111 case SDL_UYVY_OVERLAY: | |
| 1112 case SDL_YVYU_OVERLAY: | |
| 1113 if ( display->format->BytesPerPixel == 2 ) { | |
| 1114 swdata->Display1X = Color16DitherYUY2Mod1X; | |
| 1115 swdata->Display2X = Color16DitherYUY2Mod2X; | |
| 1116 } | |
| 1117 if ( display->format->BytesPerPixel == 3 ) { | |
| 1118 swdata->Display1X = Color24DitherYUY2Mod1X; | |
| 1119 swdata->Display2X = Color24DitherYUY2Mod2X; | |
| 1120 } | |
| 1121 if ( display->format->BytesPerPixel == 4 ) { | |
| 1122 swdata->Display1X = Color32DitherYUY2Mod1X; | |
| 1123 swdata->Display2X = Color32DitherYUY2Mod2X; | |
| 1124 } | |
| 1125 break; | |
| 1126 default: | |
| 1127 /* We should never get here (caught above) */ | |
| 1128 break; | |
| 1129 } | |
| 1130 | |
| 1131 /* Find the pitch and offset values for the overlay */ | |
| 1132 overlay->pitches = swdata->pitches; | |
| 1133 overlay->pixels = swdata->planes; | |
| 1134 switch (format) { | |
| 1135 case SDL_YV12_OVERLAY: | |
| 1136 case SDL_IYUV_OVERLAY: | |
| 1137 overlay->pitches[0] = overlay->w; | |
| 1138 overlay->pitches[1] = overlay->pitches[0] / 2; | |
| 1139 overlay->pitches[2] = overlay->pitches[0] / 2; | |
| 1140 overlay->pixels[0] = swdata->pixels; | |
| 1141 overlay->pixels[1] = overlay->pixels[0] + | |
| 1142 overlay->pitches[0] * overlay->h; | |
| 1143 overlay->pixels[2] = overlay->pixels[1] + | |
| 1144 overlay->pitches[1] * overlay->h / 2; | |
| 1145 overlay->planes = 3; | |
| 1146 break; | |
| 1147 case SDL_YUY2_OVERLAY: | |
| 1148 case SDL_UYVY_OVERLAY: | |
| 1149 case SDL_YVYU_OVERLAY: | |
| 1150 overlay->pitches[0] = overlay->w*2; | |
| 1151 overlay->pixels[0] = swdata->pixels; | |
| 1152 overlay->planes = 1; | |
| 1153 break; | |
| 1154 default: | |
| 1155 /* We should never get here (caught above) */ | |
| 1156 break; | |
| 1157 } | |
| 1158 | |
| 1159 /* We're all done.. */ | |
| 1160 return(overlay); | |
| 1161 } | |
| 1162 | |
| 1163 int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1164 { | |
| 1165 return(0); | |
| 1166 } | |
| 1167 | |
| 1168 void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1169 { | |
| 1170 return; | |
| 1171 } | |
| 1172 | |
| 1173 int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 1174 { | |
| 1175 struct private_yuvhwdata *swdata; | |
| 1176 SDL_Surface *stretch; | |
| 1177 SDL_Surface *display; | |
| 1178 int scale_2x; | |
| 1179 Uint8 *lum, *Cr, *Cb; | |
| 1180 Uint8 *dst; | |
| 1181 int mod; | |
| 1182 | |
| 1183 swdata = overlay->hwdata; | |
| 1184 scale_2x = 0; | |
| 1185 stretch = 0; | |
| 1186 if ( (overlay->w != dstrect->w) || (overlay->h != dstrect->h) ) { | |
| 1187 if ( (dstrect->w == 2*overlay->w) && | |
| 1188 (dstrect->h == 2*overlay->h) ) { | |
| 1189 scale_2x = 1; | |
| 1190 } else { | |
| 1191 if ( ! swdata->stretch ) { | |
| 1192 display = swdata->display; | |
| 1193 swdata->stretch = SDL_CreateRGBSurface( | |
| 1194 SDL_SWSURFACE, | |
| 1195 overlay->w, overlay->h, | |
| 1196 display->format->BitsPerPixel, | |
| 1197 display->format->Rmask, | |
| 1198 display->format->Gmask, | |
| 1199 display->format->Bmask, 0); | |
| 1200 if ( ! swdata->stretch ) { | |
| 1201 return(-1); | |
| 1202 } | |
| 1203 } | |
| 1204 stretch = swdata->stretch; | |
| 1205 } | |
| 1206 } | |
| 1207 | |
| 1208 if ( stretch ) { | |
| 1209 display = stretch; | |
| 1210 } else { | |
| 1211 display = swdata->display; | |
| 1212 } | |
| 1213 switch (overlay->format) { | |
| 1214 case SDL_YV12_OVERLAY: | |
| 1215 lum = overlay->pixels[0]; | |
| 1216 Cr = overlay->pixels[1]; | |
| 1217 Cb = overlay->pixels[2]; | |
| 1218 break; | |
| 1219 case SDL_IYUV_OVERLAY: | |
| 1220 lum = overlay->pixels[0]; | |
| 1221 Cr = overlay->pixels[2]; | |
| 1222 Cb = overlay->pixels[1]; | |
| 1223 break; | |
| 1224 case SDL_YUY2_OVERLAY: | |
| 1225 lum = overlay->pixels[0]; | |
| 1226 Cr = lum + 3; | |
| 1227 Cb = lum + 1; | |
| 1228 break; | |
| 1229 case SDL_UYVY_OVERLAY: | |
| 1230 lum = overlay->pixels[0]+1; | |
| 1231 Cr = lum + 1; | |
| 1232 Cb = lum - 1; | |
| 1233 break; | |
| 1234 case SDL_YVYU_OVERLAY: | |
| 1235 lum = overlay->pixels[0]; | |
| 1236 Cr = lum + 1; | |
| 1237 Cb = lum + 3; | |
| 1238 break; | |
| 1239 default: | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
1240 SDL_SetError("Unsupported YUV format in blit"); |
| 0 | 1241 return(-1); |
| 1242 } | |
| 1243 if ( SDL_MUSTLOCK(display) ) { | |
| 1244 if ( SDL_LockSurface(display) < 0 ) { | |
| 1245 return(-1); | |
| 1246 } | |
| 1247 } | |
| 1248 if ( stretch ) { | |
| 1249 dst = (Uint8 *)stretch->pixels; | |
| 1250 } else { | |
| 1251 dst = (Uint8 *)display->pixels | |
| 1252 + dstrect->x * display->format->BytesPerPixel | |
| 1253 + dstrect->y * display->pitch; | |
| 1254 } | |
| 1255 mod = (display->pitch / display->format->BytesPerPixel); | |
| 1256 | |
| 1257 if ( scale_2x ) { | |
| 1258 mod -= (overlay->w * 2); | |
| 1259 swdata->Display2X(swdata->colortab, swdata->rgb_2_pix, | |
| 1260 lum, Cr, Cb, dst, overlay->h, overlay->w,mod); | |
| 1261 } else { | |
| 1262 mod -= overlay->w; | |
| 1263 swdata->Display1X(swdata->colortab, swdata->rgb_2_pix, | |
| 1264 lum, Cr, Cb, dst, overlay->h, overlay->w,mod); | |
| 1265 } | |
| 1266 if ( SDL_MUSTLOCK(display) ) { | |
| 1267 SDL_UnlockSurface(display); | |
| 1268 } | |
| 1269 if ( stretch ) { | |
| 1270 display = swdata->display; | |
| 1271 SDL_SoftStretch(stretch, NULL, display, dstrect); | |
| 1272 } | |
| 1273 SDL_UpdateRects(display, 1, dstrect); | |
| 1274 | |
| 1275 return(0); | |
| 1276 } | |
| 1277 | |
| 1278 void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1279 { | |
| 1280 struct private_yuvhwdata *swdata; | |
| 1281 | |
| 1282 swdata = overlay->hwdata; | |
| 1283 if ( swdata ) { | |
|
9
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1284 if ( swdata->stretch ) { |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1285 SDL_FreeSurface(swdata->stretch); |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1286 } |
| 0 | 1287 if ( swdata->pixels ) { |
| 1288 free(swdata->pixels); | |
| 1289 } | |
| 1290 if ( swdata->colortab ) { | |
| 1291 free(swdata->colortab); | |
| 1292 } | |
| 1293 if ( swdata->rgb_2_pix ) { | |
| 1294 free(swdata->rgb_2_pix); | |
| 1295 } | |
| 1296 free(swdata); | |
| 1297 } | |
| 1298 } |