Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv_sw.c @ 232:678e3ed01019
Don't generate a spurious error on SDL_InitVideo()
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 06 Nov 2001 00:15:04 +0000 |
| parents | a1c15fa4abb9 |
| children | e8157fcb3114 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga | |
| 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 | |
| 20 slouken@devolution.com | |
| 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" | |
| 95 #include "SDL_stretch_c.h" | |
| 96 #include "SDL_yuvfuncs.h" | |
| 97 #include "SDL_yuv_sw_c.h" | |
| 98 | |
| 99 /* Function to check the CPU flags */ | |
| 100 #define MMX_CPU 0x800000 | |
| 101 #ifdef USE_ASMBLIT | |
| 102 #define CPU_Flags() Hermes_X86_CPU() | |
| 103 #else | |
| 104 #define CPU_Flags() 0L | |
| 105 #endif | |
| 106 | |
| 107 #ifdef USE_ASMBLIT | |
| 108 #define X86_ASSEMBLER | |
| 109 #define HermesConverterInterface void | |
| 110 #define HermesClearInterface void | |
| 111 #define STACKCALL | |
| 112 typedef Uint32 int32; | |
| 113 | |
| 114 #include "HeadX86.h" | |
| 115 #endif | |
| 116 | |
| 117 /* The functions used to manipulate software video overlays */ | |
| 118 static struct private_yuvhwfuncs sw_yuvfuncs = { | |
| 119 SDL_LockYUV_SW, | |
| 120 SDL_UnlockYUV_SW, | |
| 121 SDL_DisplayYUV_SW, | |
| 122 SDL_FreeYUV_SW | |
| 123 }; | |
| 124 | |
| 125 /* RGB conversion lookup tables */ | |
| 126 struct private_yuvhwdata { | |
| 127 SDL_Surface *stretch; | |
| 128 SDL_Surface *display; | |
| 129 Uint8 *pixels; | |
| 130 int *colortab; | |
| 131 Uint32 *rgb_2_pix; | |
| 132 void (*Display1X)(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 void (*Display2X)(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 /* These are just so we don't have to allocate them separately */ | |
| 142 Uint16 pitches[3]; | |
| 143 Uint8 *planes[3]; | |
| 144 }; | |
| 145 | |
| 146 | |
| 147 /* The colorspace conversion functions */ | |
| 148 | |
| 149 extern void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, | |
| 150 unsigned char *lum, unsigned char *cr, | |
| 151 unsigned char *cb, unsigned char *out, | |
| 152 int rows, int cols, int mod ); | |
| 153 extern void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, | |
| 154 unsigned char *lum, unsigned char *cr, | |
| 155 unsigned char *cb, unsigned char *out, | |
| 156 int rows, int cols, int mod ); | |
| 157 | |
| 158 static void Color16DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 159 unsigned char *lum, unsigned char *cr, | |
| 160 unsigned char *cb, unsigned char *out, | |
| 161 int rows, int cols, int mod ) | |
| 162 { | |
| 163 unsigned short* row1; | |
| 164 unsigned short* row2; | |
| 165 unsigned char* lum2; | |
| 166 int x, y; | |
| 167 int cr_r; | |
| 168 int crb_g; | |
| 169 int cb_b; | |
| 170 int cols_2 = cols / 2; | |
| 171 | |
| 172 row1 = (unsigned short*) out; | |
| 173 row2 = row1 + cols + mod; | |
| 174 lum2 = lum + cols; | |
| 175 | |
| 176 mod += cols + mod; | |
| 177 | |
| 178 y = rows / 2; | |
| 179 while( y-- ) | |
| 180 { | |
| 181 x = cols_2; | |
| 182 while( x-- ) | |
| 183 { | |
| 184 register int L; | |
| 185 | |
| 186 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 187 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 188 + colortab[ *cb + 2*256 ]; | |
| 189 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 190 ++cr; ++cb; | |
| 191 | |
| 192 L = *lum++; | |
| 193 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 194 rgb_2_pix[ L + crb_g ] | | |
| 195 rgb_2_pix[ L + cb_b ]); | |
| 196 | |
| 197 L = *lum++; | |
| 198 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 199 rgb_2_pix[ L + crb_g ] | | |
| 200 rgb_2_pix[ L + cb_b ]); | |
| 201 | |
| 202 | |
| 203 /* Now, do second row. */ | |
| 204 | |
| 205 L = *lum2++; | |
| 206 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 207 rgb_2_pix[ L + crb_g ] | | |
| 208 rgb_2_pix[ L + cb_b ]); | |
| 209 | |
| 210 L = *lum2++; | |
| 211 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 212 rgb_2_pix[ L + crb_g ] | | |
| 213 rgb_2_pix[ L + cb_b ]); | |
| 214 } | |
| 215 | |
| 216 /* | |
| 217 * These values are at the start of the next line, (due | |
| 218 * to the ++'s above),but they need to be at the start | |
| 219 * of the line after that. | |
| 220 */ | |
| 221 lum += cols; | |
| 222 lum2 += cols; | |
| 223 row1 += mod; | |
| 224 row2 += mod; | |
| 225 } | |
| 226 } | |
| 227 | |
| 228 static void Color24DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 229 unsigned char *lum, unsigned char *cr, | |
| 230 unsigned char *cb, unsigned char *out, | |
| 231 int rows, int cols, int mod ) | |
| 232 { | |
| 233 unsigned int value; | |
| 234 unsigned char* row1; | |
| 235 unsigned char* row2; | |
| 236 unsigned char* lum2; | |
| 237 int x, y; | |
| 238 int cr_r; | |
| 239 int crb_g; | |
| 240 int cb_b; | |
| 241 int cols_2 = cols / 2; | |
| 242 | |
| 243 row1 = out; | |
| 244 row2 = row1 + cols*3 + mod*3; | |
| 245 lum2 = lum + cols; | |
| 246 | |
| 247 mod += cols + mod; | |
| 248 mod *= 3; | |
| 249 | |
| 250 y = rows / 2; | |
| 251 while( y-- ) | |
| 252 { | |
| 253 x = cols_2; | |
| 254 while( x-- ) | |
| 255 { | |
| 256 register int L; | |
| 257 | |
| 258 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 259 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 260 + colortab[ *cb + 2*256 ]; | |
| 261 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 262 ++cr; ++cb; | |
| 263 | |
| 264 L = *lum++; | |
| 265 value = (rgb_2_pix[ L + cr_r ] | | |
| 266 rgb_2_pix[ L + crb_g ] | | |
| 267 rgb_2_pix[ L + cb_b ]); | |
| 268 *row1++ = (value ) & 0xFF; | |
| 269 *row1++ = (value >> 8) & 0xFF; | |
| 270 *row1++ = (value >> 16) & 0xFF; | |
| 271 | |
| 272 L = *lum++; | |
| 273 value = (rgb_2_pix[ L + cr_r ] | | |
| 274 rgb_2_pix[ L + crb_g ] | | |
| 275 rgb_2_pix[ L + cb_b ]); | |
| 276 *row1++ = (value ) & 0xFF; | |
| 277 *row1++ = (value >> 8) & 0xFF; | |
| 278 *row1++ = (value >> 16) & 0xFF; | |
| 279 | |
| 280 | |
| 281 /* Now, do second row. */ | |
| 282 | |
| 283 L = *lum2++; | |
| 284 value = (rgb_2_pix[ L + cr_r ] | | |
| 285 rgb_2_pix[ L + crb_g ] | | |
| 286 rgb_2_pix[ L + cb_b ]); | |
| 287 *row2++ = (value ) & 0xFF; | |
| 288 *row2++ = (value >> 8) & 0xFF; | |
| 289 *row2++ = (value >> 16) & 0xFF; | |
| 290 | |
| 291 L = *lum2++; | |
| 292 value = (rgb_2_pix[ L + cr_r ] | | |
| 293 rgb_2_pix[ L + crb_g ] | | |
| 294 rgb_2_pix[ L + cb_b ]); | |
| 295 *row2++ = (value ) & 0xFF; | |
| 296 *row2++ = (value >> 8) & 0xFF; | |
| 297 *row2++ = (value >> 16) & 0xFF; | |
| 298 } | |
| 299 | |
| 300 /* | |
| 301 * These values are at the start of the next line, (due | |
| 302 * to the ++'s above),but they need to be at the start | |
| 303 * of the line after that. | |
| 304 */ | |
| 305 lum += cols; | |
| 306 lum2 += cols; | |
| 307 row1 += mod; | |
| 308 row2 += mod; | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 static void Color32DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 313 unsigned char *lum, unsigned char *cr, | |
| 314 unsigned char *cb, unsigned char *out, | |
| 315 int rows, int cols, int mod ) | |
| 316 { | |
| 317 unsigned int* row1; | |
| 318 unsigned int* row2; | |
| 319 unsigned char* lum2; | |
| 320 int x, y; | |
| 321 int cr_r; | |
| 322 int crb_g; | |
| 323 int cb_b; | |
| 324 int cols_2 = cols / 2; | |
| 325 | |
| 326 row1 = (unsigned int*) out; | |
| 327 row2 = row1 + cols + mod; | |
| 328 lum2 = lum + cols; | |
| 329 | |
| 330 mod += cols + mod; | |
| 331 | |
| 332 y = rows / 2; | |
| 333 while( y-- ) | |
| 334 { | |
| 335 x = cols_2; | |
| 336 while( x-- ) | |
| 337 { | |
| 338 register int L; | |
| 339 | |
| 340 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 341 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 342 + colortab[ *cb + 2*256 ]; | |
| 343 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 344 ++cr; ++cb; | |
| 345 | |
| 346 L = *lum++; | |
| 347 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 348 rgb_2_pix[ L + crb_g ] | | |
| 349 rgb_2_pix[ L + cb_b ]); | |
| 350 | |
| 351 L = *lum++; | |
| 352 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 353 rgb_2_pix[ L + crb_g ] | | |
| 354 rgb_2_pix[ L + cb_b ]); | |
| 355 | |
| 356 | |
| 357 /* Now, do second row. */ | |
| 358 | |
| 359 L = *lum2++; | |
| 360 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 361 rgb_2_pix[ L + crb_g ] | | |
| 362 rgb_2_pix[ L + cb_b ]); | |
| 363 | |
| 364 L = *lum2++; | |
| 365 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 366 rgb_2_pix[ L + crb_g ] | | |
| 367 rgb_2_pix[ L + cb_b ]); | |
| 368 } | |
| 369 | |
| 370 /* | |
| 371 * These values are at the start of the next line, (due | |
| 372 * to the ++'s above),but they need to be at the start | |
| 373 * of the line after that. | |
| 374 */ | |
| 375 lum += cols; | |
| 376 lum2 += cols; | |
| 377 row1 += mod; | |
| 378 row2 += mod; | |
| 379 } | |
| 380 } | |
| 381 | |
| 382 /* | |
| 383 * In this function I make use of a nasty trick. The tables have the lower | |
| 384 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 385 * the horisontal doubling for free (almost). | |
| 386 */ | |
| 387 static void Color16DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 388 unsigned char *lum, unsigned char *cr, | |
| 389 unsigned char *cb, unsigned char *out, | |
| 390 int rows, int cols, int mod ) | |
| 391 { | |
| 392 unsigned int* row1 = (unsigned int*) out; | |
| 393 const int next_row = cols+(mod/2); | |
| 394 unsigned int* row2 = row1 + 2*next_row; | |
| 395 unsigned char* lum2; | |
| 396 int x, y; | |
| 397 int cr_r; | |
| 398 int crb_g; | |
| 399 int cb_b; | |
| 400 int cols_2 = cols / 2; | |
| 401 | |
| 402 lum2 = lum + cols; | |
| 403 | |
| 404 mod = (next_row * 3) + (mod/2); | |
| 405 | |
| 406 y = rows / 2; | |
| 407 while( y-- ) | |
| 408 { | |
| 409 x = cols_2; | |
| 410 while( x-- ) | |
| 411 { | |
| 412 register int L; | |
| 413 | |
| 414 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 415 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 416 + colortab[ *cb + 2*256 ]; | |
| 417 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 418 ++cr; ++cb; | |
| 419 | |
| 420 L = *lum++; | |
| 421 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 422 rgb_2_pix[ L + crb_g ] | | |
| 423 rgb_2_pix[ L + cb_b ]); | |
| 424 row1++; | |
| 425 | |
| 426 L = *lum++; | |
| 427 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 428 rgb_2_pix[ L + crb_g ] | | |
| 429 rgb_2_pix[ L + cb_b ]); | |
| 430 row1++; | |
| 431 | |
| 432 | |
| 433 /* Now, do second row. */ | |
| 434 | |
| 435 L = *lum2++; | |
| 436 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 437 rgb_2_pix[ L + crb_g ] | | |
| 438 rgb_2_pix[ L + cb_b ]); | |
| 439 row2++; | |
| 440 | |
| 441 L = *lum2++; | |
| 442 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 443 rgb_2_pix[ L + crb_g ] | | |
| 444 rgb_2_pix[ L + cb_b ]); | |
| 445 row2++; | |
| 446 } | |
| 447 | |
| 448 /* | |
| 449 * These values are at the start of the next line, (due | |
| 450 * to the ++'s above),but they need to be at the start | |
| 451 * of the line after that. | |
| 452 */ | |
| 453 lum += cols; | |
| 454 lum2 += cols; | |
| 455 row1 += mod; | |
| 456 row2 += mod; | |
| 457 } | |
| 458 } | |
| 459 | |
| 460 static void Color24DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 461 unsigned char *lum, unsigned char *cr, | |
| 462 unsigned char *cb, unsigned char *out, | |
| 463 int rows, int cols, int mod ) | |
| 464 { | |
| 465 unsigned int value; | |
| 466 unsigned char* row1 = out; | |
| 467 const int next_row = (cols*2 + mod) * 3; | |
| 468 unsigned char* row2 = row1 + 2*next_row; | |
| 469 unsigned char* lum2; | |
| 470 int x, y; | |
| 471 int cr_r; | |
| 472 int crb_g; | |
| 473 int cb_b; | |
| 474 int cols_2 = cols / 2; | |
| 475 | |
| 476 lum2 = lum + cols; | |
| 477 | |
| 478 mod = next_row*3 + mod*3; | |
| 479 | |
| 480 y = rows / 2; | |
| 481 while( y-- ) | |
| 482 { | |
| 483 x = cols_2; | |
| 484 while( x-- ) | |
| 485 { | |
| 486 register int L; | |
| 487 | |
| 488 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 489 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 490 + colortab[ *cb + 2*256 ]; | |
| 491 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 492 ++cr; ++cb; | |
| 493 | |
| 494 L = *lum++; | |
| 495 value = (rgb_2_pix[ L + cr_r ] | | |
| 496 rgb_2_pix[ L + crb_g ] | | |
| 497 rgb_2_pix[ L + cb_b ]); | |
| 498 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 499 (value ) & 0xFF; | |
| 500 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 501 (value >> 8) & 0xFF; | |
| 502 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 503 (value >> 16) & 0xFF; | |
| 504 row1 += 2*3; | |
| 505 | |
| 506 L = *lum++; | |
| 507 value = (rgb_2_pix[ L + cr_r ] | | |
| 508 rgb_2_pix[ L + crb_g ] | | |
| 509 rgb_2_pix[ L + cb_b ]); | |
| 510 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 511 (value ) & 0xFF; | |
| 512 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 513 (value >> 8) & 0xFF; | |
| 514 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 515 (value >> 16) & 0xFF; | |
| 516 row1 += 2*3; | |
| 517 | |
| 518 | |
| 519 /* Now, do second row. */ | |
| 520 | |
| 521 L = *lum2++; | |
| 522 value = (rgb_2_pix[ L + cr_r ] | | |
| 523 rgb_2_pix[ L + crb_g ] | | |
| 524 rgb_2_pix[ L + cb_b ]); | |
| 525 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 526 (value ) & 0xFF; | |
| 527 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 528 (value >> 8) & 0xFF; | |
| 529 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 530 (value >> 16) & 0xFF; | |
| 531 row2 += 2*3; | |
| 532 | |
| 533 L = *lum2++; | |
| 534 value = (rgb_2_pix[ L + cr_r ] | | |
| 535 rgb_2_pix[ L + crb_g ] | | |
| 536 rgb_2_pix[ L + cb_b ]); | |
| 537 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 538 (value ) & 0xFF; | |
| 539 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 540 (value >> 8) & 0xFF; | |
| 541 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 542 (value >> 16) & 0xFF; | |
| 543 row2 += 2*3; | |
| 544 } | |
| 545 | |
| 546 /* | |
| 547 * These values are at the start of the next line, (due | |
| 548 * to the ++'s above),but they need to be at the start | |
| 549 * of the line after that. | |
| 550 */ | |
| 551 lum += cols; | |
| 552 lum2 += cols; | |
| 553 row1 += mod; | |
| 554 row2 += mod; | |
| 555 } | |
| 556 } | |
| 557 | |
| 558 static void Color32DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 559 unsigned char *lum, unsigned char *cr, | |
| 560 unsigned char *cb, unsigned char *out, | |
| 561 int rows, int cols, int mod ) | |
| 562 { | |
| 563 unsigned int* row1 = (unsigned int*) out; | |
| 564 const int next_row = cols*2+mod; | |
| 565 unsigned int* row2 = row1 + 2*next_row; | |
| 566 unsigned char* lum2; | |
| 567 int x, y; | |
| 568 int cr_r; | |
| 569 int crb_g; | |
| 570 int cb_b; | |
| 571 int cols_2 = cols / 2; | |
| 572 | |
| 573 lum2 = lum + cols; | |
| 574 | |
| 575 mod = (next_row * 3) + mod; | |
| 576 | |
| 577 y = rows / 2; | |
| 578 while( y-- ) | |
| 579 { | |
| 580 x = cols_2; | |
| 581 while( x-- ) | |
| 582 { | |
| 583 register int L; | |
| 584 | |
| 585 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 586 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 587 + colortab[ *cb + 2*256 ]; | |
| 588 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 589 ++cr; ++cb; | |
| 590 | |
| 591 L = *lum++; | |
| 592 row1[0] = row1[1] = row1[next_row] = row1[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 row1 += 2; | |
| 597 | |
| 598 L = *lum++; | |
| 599 row1[0] = row1[1] = row1[next_row] = row1[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 row1 += 2; | |
| 604 | |
| 605 | |
| 606 /* Now, do second row. */ | |
| 607 | |
| 608 L = *lum2++; | |
| 609 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 610 (rgb_2_pix[ L + cr_r ] | | |
| 611 rgb_2_pix[ L + crb_g ] | | |
| 612 rgb_2_pix[ L + cb_b ]); | |
| 613 row2 += 2; | |
| 614 | |
| 615 L = *lum2++; | |
| 616 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 617 (rgb_2_pix[ L + cr_r ] | | |
| 618 rgb_2_pix[ L + crb_g ] | | |
| 619 rgb_2_pix[ L + cb_b ]); | |
| 620 row2 += 2; | |
| 621 } | |
| 622 | |
| 623 /* | |
| 624 * These values are at the start of the next line, (due | |
| 625 * to the ++'s above),but they need to be at the start | |
| 626 * of the line after that. | |
| 627 */ | |
| 628 lum += cols; | |
| 629 lum2 += cols; | |
| 630 row1 += mod; | |
| 631 row2 += mod; | |
| 632 } | |
| 633 } | |
| 634 | |
| 635 static void Color16DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 636 unsigned char *lum, unsigned char *cr, | |
| 637 unsigned char *cb, unsigned char *out, | |
| 638 int rows, int cols, int mod ) | |
| 639 { | |
| 640 unsigned short* row; | |
| 641 int x, y; | |
| 642 int cr_r; | |
| 643 int crb_g; | |
| 644 int cb_b; | |
| 645 int cols_2 = cols / 2; | |
| 646 | |
| 647 row = (unsigned short*) out; | |
| 648 | |
| 649 y = rows; | |
| 650 while( y-- ) | |
| 651 { | |
| 652 x = cols_2; | |
| 653 while( x-- ) | |
| 654 { | |
| 655 register int L; | |
| 656 | |
| 657 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 658 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 659 + colortab[ *cb + 2*256 ]; | |
| 660 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 661 cr += 4; cb += 4; | |
| 662 | |
| 663 L = *lum; lum += 2; | |
| 664 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 665 rgb_2_pix[ L + crb_g ] | | |
| 666 rgb_2_pix[ L + cb_b ]); | |
| 667 | |
| 668 L = *lum; lum += 2; | |
| 669 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 670 rgb_2_pix[ L + crb_g ] | | |
| 671 rgb_2_pix[ L + cb_b ]); | |
| 672 | |
| 673 } | |
| 674 | |
| 675 row += mod; | |
| 676 } | |
| 677 } | |
| 678 | |
| 679 static void Color24DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 680 unsigned char *lum, unsigned char *cr, | |
| 681 unsigned char *cb, unsigned char *out, | |
| 682 int rows, int cols, int mod ) | |
| 683 { | |
| 684 unsigned int value; | |
| 685 unsigned char* row; | |
| 686 int x, y; | |
| 687 int cr_r; | |
| 688 int crb_g; | |
| 689 int cb_b; | |
| 690 int cols_2 = cols / 2; | |
| 691 | |
| 692 row = (unsigned char*) out; | |
| 693 mod *= 3; | |
| 694 y = rows; | |
| 695 while( y-- ) | |
| 696 { | |
| 697 x = cols_2; | |
| 698 while( x-- ) | |
| 699 { | |
| 700 register int L; | |
| 701 | |
| 702 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 703 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 704 + colortab[ *cb + 2*256 ]; | |
| 705 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 706 cr += 4; cb += 4; | |
| 707 | |
| 708 L = *lum; lum += 2; | |
| 709 value = (rgb_2_pix[ L + cr_r ] | | |
| 710 rgb_2_pix[ L + crb_g ] | | |
| 711 rgb_2_pix[ L + cb_b ]); | |
| 712 *row++ = (value ) & 0xFF; | |
| 713 *row++ = (value >> 8) & 0xFF; | |
| 714 *row++ = (value >> 16) & 0xFF; | |
| 715 | |
| 716 L = *lum; lum += 2; | |
| 717 value = (rgb_2_pix[ L + cr_r ] | | |
| 718 rgb_2_pix[ L + crb_g ] | | |
| 719 rgb_2_pix[ L + cb_b ]); | |
| 720 *row++ = (value ) & 0xFF; | |
| 721 *row++ = (value >> 8) & 0xFF; | |
| 722 *row++ = (value >> 16) & 0xFF; | |
| 723 | |
| 724 } | |
| 725 row += mod; | |
| 726 } | |
| 727 } | |
| 728 | |
| 729 static void Color32DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 730 unsigned char *lum, unsigned char *cr, | |
| 731 unsigned char *cb, unsigned char *out, | |
| 732 int rows, int cols, int mod ) | |
| 733 { | |
| 734 unsigned int* row; | |
| 735 int x, y; | |
| 736 int cr_r; | |
| 737 int crb_g; | |
| 738 int cb_b; | |
| 739 int cols_2 = cols / 2; | |
| 740 | |
| 741 row = (unsigned int*) out; | |
| 742 y = rows; | |
| 743 while( y-- ) | |
| 744 { | |
| 745 x = cols_2; | |
| 746 while( x-- ) | |
| 747 { | |
| 748 register int L; | |
| 749 | |
| 750 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 751 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 752 + colortab[ *cb + 2*256 ]; | |
| 753 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 754 cr += 4; cb += 4; | |
| 755 | |
| 756 L = *lum; lum += 2; | |
| 757 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 758 rgb_2_pix[ L + crb_g ] | | |
| 759 rgb_2_pix[ L + cb_b ]); | |
| 760 | |
| 761 L = *lum; lum += 2; | |
| 762 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 763 rgb_2_pix[ L + crb_g ] | | |
| 764 rgb_2_pix[ L + cb_b ]); | |
| 765 | |
| 766 | |
| 767 } | |
| 768 row += mod; | |
| 769 } | |
| 770 } | |
| 771 | |
| 772 /* | |
| 773 * In this function I make use of a nasty trick. The tables have the lower | |
| 774 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 775 * the horisontal doubling for free (almost). | |
| 776 */ | |
| 777 static void Color16DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 778 unsigned char *lum, unsigned char *cr, | |
| 779 unsigned char *cb, unsigned char *out, | |
| 780 int rows, int cols, int mod ) | |
| 781 { | |
| 782 unsigned int* row = (unsigned int*) out; | |
| 783 const int next_row = cols+(mod/2); | |
| 784 int x, y; | |
| 785 int cr_r; | |
| 786 int crb_g; | |
| 787 int cb_b; | |
| 788 int cols_2 = cols / 2; | |
| 789 | |
| 790 y = rows; | |
| 791 while( y-- ) | |
| 792 { | |
| 793 x = cols_2; | |
| 794 while( x-- ) | |
| 795 { | |
| 796 register int L; | |
| 797 | |
| 798 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 799 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 800 + colortab[ *cb + 2*256 ]; | |
| 801 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 802 cr += 4; cb += 4; | |
| 803 | |
| 804 L = *lum; lum += 2; | |
| 805 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 806 rgb_2_pix[ L + crb_g ] | | |
| 807 rgb_2_pix[ L + cb_b ]); | |
| 808 row++; | |
| 809 | |
| 810 L = *lum; lum += 2; | |
| 811 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 812 rgb_2_pix[ L + crb_g ] | | |
| 813 rgb_2_pix[ L + cb_b ]); | |
| 814 row++; | |
| 815 | |
| 816 } | |
| 817 row += next_row; | |
| 818 } | |
| 819 } | |
| 820 | |
| 821 static void Color24DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 822 unsigned char *lum, unsigned char *cr, | |
| 823 unsigned char *cb, unsigned char *out, | |
| 824 int rows, int cols, int mod ) | |
| 825 { | |
| 826 unsigned int value; | |
| 827 unsigned char* row = out; | |
| 828 const int next_row = (cols*2 + mod) * 3; | |
| 829 int x, y; | |
| 830 int cr_r; | |
| 831 int crb_g; | |
| 832 int cb_b; | |
| 833 int cols_2 = cols / 2; | |
| 834 y = rows; | |
| 835 while( y-- ) | |
| 836 { | |
| 837 x = cols_2; | |
| 838 while( x-- ) | |
| 839 { | |
| 840 register int L; | |
| 841 | |
| 842 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 843 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 844 + colortab[ *cb + 2*256 ]; | |
| 845 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 846 cr += 4; cb += 4; | |
| 847 | |
| 848 L = *lum; lum += 2; | |
| 849 value = (rgb_2_pix[ L + cr_r ] | | |
| 850 rgb_2_pix[ L + crb_g ] | | |
| 851 rgb_2_pix[ L + cb_b ]); | |
| 852 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 853 (value ) & 0xFF; | |
| 854 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 855 (value >> 8) & 0xFF; | |
| 856 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 857 (value >> 16) & 0xFF; | |
| 858 row += 2*3; | |
| 859 | |
| 860 L = *lum; lum += 2; | |
| 861 value = (rgb_2_pix[ L + cr_r ] | | |
| 862 rgb_2_pix[ L + crb_g ] | | |
| 863 rgb_2_pix[ L + cb_b ]); | |
| 864 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 865 (value ) & 0xFF; | |
| 866 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 867 (value >> 8) & 0xFF; | |
| 868 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 869 (value >> 16) & 0xFF; | |
| 870 row += 2*3; | |
| 871 | |
| 872 } | |
| 873 row += next_row; | |
| 874 } | |
| 875 } | |
| 876 | |
| 877 static void Color32DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 878 unsigned char *lum, unsigned char *cr, | |
| 879 unsigned char *cb, unsigned char *out, | |
| 880 int rows, int cols, int mod ) | |
| 881 { | |
| 882 unsigned int* row = (unsigned int*) out; | |
| 883 const int next_row = cols*2+mod; | |
| 884 int x, y; | |
| 885 int cr_r; | |
| 886 int crb_g; | |
| 887 int cb_b; | |
| 888 int cols_2 = cols / 2; | |
| 889 mod+=mod; | |
| 890 y = rows; | |
| 891 while( y-- ) | |
| 892 { | |
| 893 x = cols_2; | |
| 894 while( x-- ) | |
| 895 { | |
| 896 register int L; | |
| 897 | |
| 898 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 899 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 900 + colortab[ *cb + 2*256 ]; | |
| 901 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 902 cr += 4; cb += 4; | |
| 903 | |
| 904 L = *lum; lum += 2; | |
| 905 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 906 (rgb_2_pix[ L + cr_r ] | | |
| 907 rgb_2_pix[ L + crb_g ] | | |
| 908 rgb_2_pix[ L + cb_b ]); | |
| 909 row += 2; | |
| 910 | |
| 911 L = *lum; lum += 2; | |
| 912 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 913 (rgb_2_pix[ L + cr_r ] | | |
| 914 rgb_2_pix[ L + crb_g ] | | |
| 915 rgb_2_pix[ L + cb_b ]); | |
| 916 row += 2; | |
| 917 | |
| 918 | |
| 919 } | |
| 920 | |
| 921 row += next_row; | |
| 922 } | |
| 923 } | |
| 924 | |
| 925 /* | |
| 926 * How many 1 bits are there in the Uint32. | |
| 927 * Low performance, do not call often. | |
| 928 */ | |
| 929 static int number_of_bits_set( Uint32 a ) | |
| 930 { | |
| 931 if(!a) return 0; | |
| 932 if(a & 1) return 1 + number_of_bits_set(a >> 1); | |
| 933 return(number_of_bits_set(a >> 1)); | |
| 934 } | |
| 935 | |
| 936 /* | |
| 937 * How many 0 bits are there at least significant end of Uint32. | |
| 938 * Low performance, do not call often. | |
| 939 */ | |
| 940 static int free_bits_at_bottom( Uint32 a ) | |
| 941 { | |
| 942 /* assume char is 8 bits */ | |
| 943 if(!a) return sizeof(Uint32) * 8; | |
| 944 if(((Sint32)a) & 1l) return 0; | |
| 945 return 1 + free_bits_at_bottom ( a >> 1); | |
| 946 } | |
| 947 | |
| 948 | |
| 949 SDL_Overlay *SDL_CreateYUV_SW(_THIS, int width, int height, Uint32 format, SDL_Surface *display) | |
| 950 { | |
| 951 SDL_Overlay *overlay; | |
| 952 struct private_yuvhwdata *swdata; | |
| 953 int *Cr_r_tab; | |
| 954 int *Cr_g_tab; | |
| 955 int *Cb_g_tab; | |
| 956 int *Cb_b_tab; | |
| 957 Uint32 *r_2_pix_alloc; | |
| 958 Uint32 *g_2_pix_alloc; | |
| 959 Uint32 *b_2_pix_alloc; | |
| 960 int i, cpu_mmx; | |
| 961 int CR, CB; | |
| 962 Uint32 Rmask, Gmask, Bmask; | |
| 963 | |
| 964 /* Only RGB packed pixel conversion supported */ | |
| 965 if ( (display->format->BytesPerPixel != 2) && | |
| 966 (display->format->BytesPerPixel != 3) && | |
| 967 (display->format->BytesPerPixel != 4) ) { | |
| 968 SDL_SetError("Can't use YUV data on non 16/24/32 bit surfaces"); | |
| 969 return(NULL); | |
| 970 } | |
| 971 | |
| 972 /* Verify that we support the format */ | |
| 973 switch (format) { | |
| 974 case SDL_YV12_OVERLAY: | |
| 975 case SDL_IYUV_OVERLAY: | |
| 976 case SDL_YUY2_OVERLAY: | |
| 977 case SDL_UYVY_OVERLAY: | |
| 978 case SDL_YVYU_OVERLAY: | |
| 979 break; | |
| 980 default: | |
| 981 SDL_SetError("Unsupported YUV format"); | |
| 982 return(NULL); | |
| 983 } | |
| 984 | |
| 985 /* Create the overlay structure */ | |
| 986 overlay = (SDL_Overlay *)malloc(sizeof *overlay); | |
| 987 if ( overlay == NULL ) { | |
| 988 SDL_OutOfMemory(); | |
| 989 return(NULL); | |
| 990 } | |
| 991 memset(overlay, 0, (sizeof *overlay)); | |
| 992 | |
| 993 /* Fill in the basic members */ | |
| 994 overlay->format = format; | |
| 995 overlay->w = width; | |
| 996 overlay->h = height; | |
| 997 | |
| 998 /* Set up the YUV surface function structure */ | |
| 999 overlay->hwfuncs = &sw_yuvfuncs; | |
| 1000 | |
| 1001 /* Create the pixel data and lookup tables */ | |
| 1002 swdata = (struct private_yuvhwdata *)malloc(sizeof *swdata); | |
| 1003 overlay->hwdata = swdata; | |
| 1004 if ( swdata == NULL ) { | |
| 1005 SDL_OutOfMemory(); | |
| 1006 SDL_FreeYUVOverlay(overlay); | |
| 1007 return(NULL); | |
| 1008 } | |
| 1009 swdata->stretch = NULL; | |
| 1010 swdata->display = display; | |
| 1011 swdata->pixels = (Uint8 *) malloc(width*height*2); | |
| 1012 swdata->colortab = (int *)malloc(4*256*sizeof(int)); | |
| 1013 Cr_r_tab = &swdata->colortab[0*256]; | |
| 1014 Cr_g_tab = &swdata->colortab[1*256]; | |
| 1015 Cb_g_tab = &swdata->colortab[2*256]; | |
| 1016 Cb_b_tab = &swdata->colortab[3*256]; | |
| 1017 swdata->rgb_2_pix = (Uint32 *)malloc(3*768*sizeof(Uint32)); | |
| 1018 r_2_pix_alloc = &swdata->rgb_2_pix[0*768]; | |
| 1019 g_2_pix_alloc = &swdata->rgb_2_pix[1*768]; | |
| 1020 b_2_pix_alloc = &swdata->rgb_2_pix[2*768]; | |
| 1021 if ( ! swdata->pixels || ! swdata->colortab || ! swdata->rgb_2_pix ) { | |
| 1022 SDL_OutOfMemory(); | |
| 1023 SDL_FreeYUVOverlay(overlay); | |
| 1024 return(NULL); | |
| 1025 } | |
| 1026 | |
| 1027 /* Generate the tables for the display surface */ | |
| 1028 for (i=0; i<256; i++) { | |
| 1029 /* Gamma correction (luminescence table) and chroma correction | |
| 1030 would be done here. See the Berkeley mpeg_play sources. | |
| 1031 */ | |
| 1032 CB = CR = (i-128); | |
| 1033 Cr_r_tab[i] = (int) ( (0.419/0.299) * CR); | |
| 1034 Cr_g_tab[i] = (int) (-(0.299/0.419) * CR); | |
| 1035 Cb_g_tab[i] = (int) (-(0.114/0.331) * CB); | |
| 1036 Cb_b_tab[i] = (int) ( (0.587/0.331) * CB); | |
| 1037 } | |
| 1038 | |
| 1039 /* | |
| 1040 * Set up entries 0-255 in rgb-to-pixel value tables. | |
| 1041 */ | |
| 1042 Rmask = display->format->Rmask; | |
| 1043 Gmask = display->format->Gmask; | |
| 1044 Bmask = display->format->Bmask; | |
| 1045 for ( i=0; i<256; ++i ) { | |
| 1046 r_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Rmask)); | |
| 1047 r_2_pix_alloc[i+256] <<= free_bits_at_bottom(Rmask); | |
| 1048 g_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Gmask)); | |
| 1049 g_2_pix_alloc[i+256] <<= free_bits_at_bottom(Gmask); | |
| 1050 b_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Bmask)); | |
| 1051 b_2_pix_alloc[i+256] <<= free_bits_at_bottom(Bmask); | |
| 1052 } | |
| 1053 | |
| 1054 /* | |
| 1055 * If we have 16-bit output depth, then we double the value | |
| 1056 * in the top word. This means that we can write out both | |
| 1057 * pixels in the pixel doubling mode with one op. It is | |
| 1058 * harmless in the normal case as storing a 32-bit value | |
| 1059 * through a short pointer will lose the top bits anyway. | |
| 1060 */ | |
| 1061 if( display->format->BytesPerPixel == 2 ) { | |
| 1062 for ( i=0; i<256; ++i ) { | |
| 1063 r_2_pix_alloc[i+256] |= (r_2_pix_alloc[i+256]) << 16; | |
| 1064 g_2_pix_alloc[i+256] |= (g_2_pix_alloc[i+256]) << 16; | |
| 1065 b_2_pix_alloc[i+256] |= (b_2_pix_alloc[i+256]) << 16; | |
| 1066 } | |
| 1067 } | |
| 1068 | |
| 1069 /* | |
| 1070 * Spread out the values we have to the rest of the array so that | |
| 1071 * we do not need to check for overflow. | |
| 1072 */ | |
| 1073 for ( i=0; i<256; ++i ) { | |
| 1074 r_2_pix_alloc[i] = r_2_pix_alloc[256]; | |
| 1075 r_2_pix_alloc[i+512] = r_2_pix_alloc[511]; | |
| 1076 g_2_pix_alloc[i] = g_2_pix_alloc[256]; | |
| 1077 g_2_pix_alloc[i+512] = g_2_pix_alloc[511]; | |
| 1078 b_2_pix_alloc[i] = b_2_pix_alloc[256]; | |
| 1079 b_2_pix_alloc[i+512] = b_2_pix_alloc[511]; | |
| 1080 } | |
| 1081 | |
| 1082 /* You have chosen wisely... */ | |
| 1083 switch (format) { | |
| 1084 case SDL_YV12_OVERLAY: | |
| 1085 case SDL_IYUV_OVERLAY: | |
| 1086 cpu_mmx = CPU_Flags() & MMX_CPU; | |
| 1087 if ( display->format->BytesPerPixel == 2 ) { | |
| 1088 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) | |
| 1089 /* inline assembly functions */ | |
| 1090 if ( cpu_mmx && (Rmask == 0xF800) && | |
| 1091 (Gmask == 0x07E0) && | |
| 1092 (Bmask == 0x001F) && | |
| 1093 (width & 15) == 0) { | |
| 1094 /*printf("Using MMX 16-bit 565 dither\n");*/ | |
| 1095 swdata->Display1X = Color565DitherYV12MMX1X; | |
| 1096 } else { | |
| 1097 /*printf("Using C 16-bit dither\n");*/ | |
| 1098 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1099 } | |
| 1100 #else | |
| 1101 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1102 #endif | |
| 1103 swdata->Display2X = Color16DitherYV12Mod2X; | |
| 1104 } | |
| 1105 if ( display->format->BytesPerPixel == 3 ) { | |
| 1106 swdata->Display1X = Color24DitherYV12Mod1X; | |
| 1107 swdata->Display2X = Color24DitherYV12Mod2X; | |
| 1108 } | |
| 1109 if ( display->format->BytesPerPixel == 4 ) { | |
| 1110 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) | |
| 1111 /* inline assembly functions */ | |
| 1112 if ( cpu_mmx && (Rmask == 0x00FF0000) && | |
| 1113 (Gmask == 0x0000FF00) && | |
| 1114 (Bmask == 0x000000FF) && | |
| 1115 (width & 15) == 0) { | |
| 1116 /*printf("Using MMX 32-bit dither\n");*/ | |
| 1117 swdata->Display1X = ColorRGBDitherYV12MMX1X; | |
| 1118 } else { | |
| 1119 /*printf("Using C 32-bit dither\n");*/ | |
| 1120 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1121 } | |
| 1122 #else | |
| 1123 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1124 #endif | |
| 1125 swdata->Display2X = Color32DitherYV12Mod2X; | |
| 1126 } | |
| 1127 break; | |
| 1128 case SDL_YUY2_OVERLAY: | |
| 1129 case SDL_UYVY_OVERLAY: | |
| 1130 case SDL_YVYU_OVERLAY: | |
| 1131 if ( display->format->BytesPerPixel == 2 ) { | |
| 1132 swdata->Display1X = Color16DitherYUY2Mod1X; | |
| 1133 swdata->Display2X = Color16DitherYUY2Mod2X; | |
| 1134 } | |
| 1135 if ( display->format->BytesPerPixel == 3 ) { | |
| 1136 swdata->Display1X = Color24DitherYUY2Mod1X; | |
| 1137 swdata->Display2X = Color24DitherYUY2Mod2X; | |
| 1138 } | |
| 1139 if ( display->format->BytesPerPixel == 4 ) { | |
| 1140 swdata->Display1X = Color32DitherYUY2Mod1X; | |
| 1141 swdata->Display2X = Color32DitherYUY2Mod2X; | |
| 1142 } | |
| 1143 break; | |
| 1144 default: | |
| 1145 /* We should never get here (caught above) */ | |
| 1146 break; | |
| 1147 } | |
| 1148 | |
| 1149 /* Find the pitch and offset values for the overlay */ | |
| 1150 overlay->pitches = swdata->pitches; | |
| 1151 overlay->pixels = swdata->planes; | |
| 1152 switch (format) { | |
| 1153 case SDL_YV12_OVERLAY: | |
| 1154 case SDL_IYUV_OVERLAY: | |
| 1155 overlay->pitches[0] = overlay->w; | |
| 1156 overlay->pitches[1] = overlay->pitches[0] / 2; | |
| 1157 overlay->pitches[2] = overlay->pitches[0] / 2; | |
| 1158 overlay->pixels[0] = swdata->pixels; | |
| 1159 overlay->pixels[1] = overlay->pixels[0] + | |
| 1160 overlay->pitches[0] * overlay->h; | |
| 1161 overlay->pixels[2] = overlay->pixels[1] + | |
| 1162 overlay->pitches[1] * overlay->h / 2; | |
| 1163 overlay->planes = 3; | |
| 1164 break; | |
| 1165 case SDL_YUY2_OVERLAY: | |
| 1166 case SDL_UYVY_OVERLAY: | |
| 1167 case SDL_YVYU_OVERLAY: | |
| 1168 overlay->pitches[0] = overlay->w*2; | |
| 1169 overlay->pixels[0] = swdata->pixels; | |
| 1170 overlay->planes = 1; | |
| 1171 break; | |
| 1172 default: | |
| 1173 /* We should never get here (caught above) */ | |
| 1174 break; | |
| 1175 } | |
| 1176 | |
| 1177 /* We're all done.. */ | |
| 1178 return(overlay); | |
| 1179 } | |
| 1180 | |
| 1181 int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1182 { | |
| 1183 return(0); | |
| 1184 } | |
| 1185 | |
| 1186 void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1187 { | |
| 1188 return; | |
| 1189 } | |
| 1190 | |
| 1191 int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 1192 { | |
| 1193 struct private_yuvhwdata *swdata; | |
| 1194 SDL_Surface *stretch; | |
| 1195 SDL_Surface *display; | |
| 1196 int scale_2x; | |
| 1197 Uint8 *lum, *Cr, *Cb; | |
| 1198 Uint8 *dst; | |
| 1199 int mod; | |
| 1200 | |
| 1201 swdata = overlay->hwdata; | |
| 1202 scale_2x = 0; | |
| 1203 stretch = 0; | |
| 1204 if ( (overlay->w != dstrect->w) || (overlay->h != dstrect->h) ) { | |
| 1205 if ( (dstrect->w == 2*overlay->w) && | |
| 1206 (dstrect->h == 2*overlay->h) ) { | |
| 1207 scale_2x = 1; | |
| 1208 } else { | |
| 1209 if ( ! swdata->stretch ) { | |
| 1210 display = swdata->display; | |
| 1211 swdata->stretch = SDL_CreateRGBSurface( | |
| 1212 SDL_SWSURFACE, | |
| 1213 overlay->w, overlay->h, | |
| 1214 display->format->BitsPerPixel, | |
| 1215 display->format->Rmask, | |
| 1216 display->format->Gmask, | |
| 1217 display->format->Bmask, 0); | |
| 1218 if ( ! swdata->stretch ) { | |
| 1219 return(-1); | |
| 1220 } | |
| 1221 } | |
| 1222 stretch = swdata->stretch; | |
| 1223 } | |
| 1224 } | |
| 1225 | |
| 1226 if ( stretch ) { | |
| 1227 display = stretch; | |
| 1228 } else { | |
| 1229 display = swdata->display; | |
| 1230 } | |
| 1231 switch (overlay->format) { | |
| 1232 case SDL_YV12_OVERLAY: | |
| 1233 lum = overlay->pixels[0]; | |
| 1234 Cr = overlay->pixels[1]; | |
| 1235 Cb = overlay->pixels[2]; | |
| 1236 break; | |
| 1237 case SDL_IYUV_OVERLAY: | |
| 1238 lum = overlay->pixels[0]; | |
| 1239 Cr = overlay->pixels[2]; | |
| 1240 Cb = overlay->pixels[1]; | |
| 1241 break; | |
| 1242 case SDL_YUY2_OVERLAY: | |
| 1243 lum = overlay->pixels[0]; | |
| 1244 Cr = lum + 3; | |
| 1245 Cb = lum + 1; | |
| 1246 break; | |
| 1247 case SDL_UYVY_OVERLAY: | |
| 1248 lum = overlay->pixels[0]+1; | |
| 1249 Cr = lum + 1; | |
| 1250 Cb = lum - 1; | |
| 1251 break; | |
| 1252 case SDL_YVYU_OVERLAY: | |
| 1253 lum = overlay->pixels[0]; | |
| 1254 Cr = lum + 1; | |
| 1255 Cb = lum + 3; | |
| 1256 break; | |
| 1257 default: | |
| 1258 SDL_SetError("Unsupported YUV format in blit (??)"); | |
| 1259 return(-1); | |
| 1260 } | |
| 1261 if ( SDL_MUSTLOCK(display) ) { | |
| 1262 if ( SDL_LockSurface(display) < 0 ) { | |
| 1263 return(-1); | |
| 1264 } | |
| 1265 } | |
| 1266 if ( stretch ) { | |
| 1267 dst = (Uint8 *)stretch->pixels; | |
| 1268 } else { | |
| 1269 dst = (Uint8 *)display->pixels | |
| 1270 + dstrect->x * display->format->BytesPerPixel | |
| 1271 + dstrect->y * display->pitch; | |
| 1272 } | |
| 1273 mod = (display->pitch / display->format->BytesPerPixel); | |
| 1274 | |
| 1275 if ( scale_2x ) { | |
| 1276 mod -= (overlay->w * 2); | |
| 1277 swdata->Display2X(swdata->colortab, swdata->rgb_2_pix, | |
| 1278 lum, Cr, Cb, dst, overlay->h, overlay->w,mod); | |
| 1279 } else { | |
| 1280 mod -= overlay->w; | |
| 1281 swdata->Display1X(swdata->colortab, swdata->rgb_2_pix, | |
| 1282 lum, Cr, Cb, dst, overlay->h, overlay->w,mod); | |
| 1283 } | |
| 1284 if ( SDL_MUSTLOCK(display) ) { | |
| 1285 SDL_UnlockSurface(display); | |
| 1286 } | |
| 1287 if ( stretch ) { | |
| 1288 display = swdata->display; | |
| 1289 SDL_SoftStretch(stretch, NULL, display, dstrect); | |
| 1290 } | |
| 1291 SDL_UpdateRects(display, 1, dstrect); | |
| 1292 | |
| 1293 return(0); | |
| 1294 } | |
| 1295 | |
| 1296 void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1297 { | |
| 1298 struct private_yuvhwdata *swdata; | |
| 1299 | |
| 1300 swdata = overlay->hwdata; | |
| 1301 if ( swdata ) { | |
|
9
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1302 if ( swdata->stretch ) { |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1303 SDL_FreeSurface(swdata->stretch); |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1304 } |
| 0 | 1305 if ( swdata->pixels ) { |
| 1306 free(swdata->pixels); | |
| 1307 } | |
| 1308 if ( swdata->colortab ) { | |
| 1309 free(swdata->colortab); | |
| 1310 } | |
| 1311 if ( swdata->rgb_2_pix ) { | |
| 1312 free(swdata->rgb_2_pix); | |
| 1313 } | |
| 1314 free(swdata); | |
| 1315 } | |
| 1316 } |