Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv_sw.c @ 410:365f57b7c4ac
*** empty log message ***
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 13 Jun 2002 12:00:34 +0000 |
| parents | c94b390687d2 |
| children | 22dbf364c017 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
297
f6ffac90895c
Updated copyright information for 2002
Sam Lantinga <slouken@libsdl.org>
parents:
292
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changeset
|
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
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
9
diff
changeset
|
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" | |
| 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 | |
| 113 #include "HeadX86.h" | |
| 114 #endif | |
| 115 | |
| 116 /* The functions used to manipulate software video overlays */ | |
| 117 static struct private_yuvhwfuncs sw_yuvfuncs = { | |
| 118 SDL_LockYUV_SW, | |
| 119 SDL_UnlockYUV_SW, | |
| 120 SDL_DisplayYUV_SW, | |
| 121 SDL_FreeYUV_SW | |
| 122 }; | |
| 123 | |
| 124 /* RGB conversion lookup tables */ | |
| 125 struct private_yuvhwdata { | |
| 126 SDL_Surface *stretch; | |
| 127 SDL_Surface *display; | |
| 128 Uint8 *pixels; | |
| 129 int *colortab; | |
| 130 Uint32 *rgb_2_pix; | |
| 131 void (*Display1X)(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 void (*Display2X)(int *colortab, Uint32 *rgb_2_pix, | |
| 136 unsigned char *lum, unsigned char *cr, | |
| 137 unsigned char *cb, unsigned char *out, | |
| 138 int rows, int cols, int mod ); | |
| 139 | |
| 140 /* These are just so we don't have to allocate them separately */ | |
| 141 Uint16 pitches[3]; | |
| 142 Uint8 *planes[3]; | |
| 143 }; | |
| 144 | |
| 145 | |
| 146 /* The colorspace conversion functions */ | |
| 147 | |
| 148 extern void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, | |
| 149 unsigned char *lum, unsigned char *cr, | |
| 150 unsigned char *cb, unsigned char *out, | |
| 151 int rows, int cols, int mod ); | |
| 152 extern void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, | |
| 153 unsigned char *lum, unsigned char *cr, | |
| 154 unsigned char *cb, unsigned char *out, | |
| 155 int rows, int cols, int mod ); | |
| 156 | |
| 157 static void Color16DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 158 unsigned char *lum, unsigned char *cr, | |
| 159 unsigned char *cb, unsigned char *out, | |
| 160 int rows, int cols, int mod ) | |
| 161 { | |
| 162 unsigned short* row1; | |
| 163 unsigned short* row2; | |
| 164 unsigned char* lum2; | |
| 165 int x, y; | |
| 166 int cr_r; | |
| 167 int crb_g; | |
| 168 int cb_b; | |
| 169 int cols_2 = cols / 2; | |
| 170 | |
| 171 row1 = (unsigned short*) out; | |
| 172 row2 = row1 + cols + mod; | |
| 173 lum2 = lum + cols; | |
| 174 | |
| 175 mod += cols + mod; | |
| 176 | |
| 177 y = rows / 2; | |
| 178 while( y-- ) | |
| 179 { | |
| 180 x = cols_2; | |
| 181 while( x-- ) | |
| 182 { | |
| 183 register int L; | |
| 184 | |
| 185 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 186 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 187 + colortab[ *cb + 2*256 ]; | |
| 188 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 189 ++cr; ++cb; | |
| 190 | |
| 191 L = *lum++; | |
| 192 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 193 rgb_2_pix[ L + crb_g ] | | |
| 194 rgb_2_pix[ L + cb_b ]); | |
| 195 | |
| 196 L = *lum++; | |
| 197 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 198 rgb_2_pix[ L + crb_g ] | | |
| 199 rgb_2_pix[ L + cb_b ]); | |
| 200 | |
| 201 | |
| 202 /* Now, do second row. */ | |
| 203 | |
| 204 L = *lum2++; | |
| 205 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 206 rgb_2_pix[ L + crb_g ] | | |
| 207 rgb_2_pix[ L + cb_b ]); | |
| 208 | |
| 209 L = *lum2++; | |
| 210 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 211 rgb_2_pix[ L + crb_g ] | | |
| 212 rgb_2_pix[ L + cb_b ]); | |
| 213 } | |
| 214 | |
| 215 /* | |
| 216 * These values are at the start of the next line, (due | |
| 217 * to the ++'s above),but they need to be at the start | |
| 218 * of the line after that. | |
| 219 */ | |
| 220 lum += cols; | |
| 221 lum2 += cols; | |
| 222 row1 += mod; | |
| 223 row2 += mod; | |
| 224 } | |
| 225 } | |
| 226 | |
| 227 static void Color24DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 228 unsigned char *lum, unsigned char *cr, | |
| 229 unsigned char *cb, unsigned char *out, | |
| 230 int rows, int cols, int mod ) | |
| 231 { | |
| 232 unsigned int value; | |
| 233 unsigned char* row1; | |
| 234 unsigned char* row2; | |
| 235 unsigned char* lum2; | |
| 236 int x, y; | |
| 237 int cr_r; | |
| 238 int crb_g; | |
| 239 int cb_b; | |
| 240 int cols_2 = cols / 2; | |
| 241 | |
| 242 row1 = out; | |
| 243 row2 = row1 + cols*3 + mod*3; | |
| 244 lum2 = lum + cols; | |
| 245 | |
| 246 mod += cols + mod; | |
| 247 mod *= 3; | |
| 248 | |
| 249 y = rows / 2; | |
| 250 while( y-- ) | |
| 251 { | |
| 252 x = cols_2; | |
| 253 while( x-- ) | |
| 254 { | |
| 255 register int L; | |
| 256 | |
| 257 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 258 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 259 + colortab[ *cb + 2*256 ]; | |
| 260 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 261 ++cr; ++cb; | |
| 262 | |
| 263 L = *lum++; | |
| 264 value = (rgb_2_pix[ L + cr_r ] | | |
| 265 rgb_2_pix[ L + crb_g ] | | |
| 266 rgb_2_pix[ L + cb_b ]); | |
| 267 *row1++ = (value ) & 0xFF; | |
| 268 *row1++ = (value >> 8) & 0xFF; | |
| 269 *row1++ = (value >> 16) & 0xFF; | |
| 270 | |
| 271 L = *lum++; | |
| 272 value = (rgb_2_pix[ L + cr_r ] | | |
| 273 rgb_2_pix[ L + crb_g ] | | |
| 274 rgb_2_pix[ L + cb_b ]); | |
| 275 *row1++ = (value ) & 0xFF; | |
| 276 *row1++ = (value >> 8) & 0xFF; | |
| 277 *row1++ = (value >> 16) & 0xFF; | |
| 278 | |
| 279 | |
| 280 /* Now, do second row. */ | |
| 281 | |
| 282 L = *lum2++; | |
| 283 value = (rgb_2_pix[ L + cr_r ] | | |
| 284 rgb_2_pix[ L + crb_g ] | | |
| 285 rgb_2_pix[ L + cb_b ]); | |
| 286 *row2++ = (value ) & 0xFF; | |
| 287 *row2++ = (value >> 8) & 0xFF; | |
| 288 *row2++ = (value >> 16) & 0xFF; | |
| 289 | |
| 290 L = *lum2++; | |
| 291 value = (rgb_2_pix[ L + cr_r ] | | |
| 292 rgb_2_pix[ L + crb_g ] | | |
| 293 rgb_2_pix[ L + cb_b ]); | |
| 294 *row2++ = (value ) & 0xFF; | |
| 295 *row2++ = (value >> 8) & 0xFF; | |
| 296 *row2++ = (value >> 16) & 0xFF; | |
| 297 } | |
| 298 | |
| 299 /* | |
| 300 * These values are at the start of the next line, (due | |
| 301 * to the ++'s above),but they need to be at the start | |
| 302 * of the line after that. | |
| 303 */ | |
| 304 lum += cols; | |
| 305 lum2 += cols; | |
| 306 row1 += mod; | |
| 307 row2 += mod; | |
| 308 } | |
| 309 } | |
| 310 | |
| 311 static void Color32DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 312 unsigned char *lum, unsigned char *cr, | |
| 313 unsigned char *cb, unsigned char *out, | |
| 314 int rows, int cols, int mod ) | |
| 315 { | |
| 316 unsigned int* row1; | |
| 317 unsigned int* row2; | |
| 318 unsigned char* lum2; | |
| 319 int x, y; | |
| 320 int cr_r; | |
| 321 int crb_g; | |
| 322 int cb_b; | |
| 323 int cols_2 = cols / 2; | |
| 324 | |
| 325 row1 = (unsigned int*) out; | |
| 326 row2 = row1 + cols + mod; | |
| 327 lum2 = lum + cols; | |
| 328 | |
| 329 mod += cols + mod; | |
| 330 | |
| 331 y = rows / 2; | |
| 332 while( y-- ) | |
| 333 { | |
| 334 x = cols_2; | |
| 335 while( x-- ) | |
| 336 { | |
| 337 register int L; | |
| 338 | |
| 339 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 340 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 341 + colortab[ *cb + 2*256 ]; | |
| 342 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 343 ++cr; ++cb; | |
| 344 | |
| 345 L = *lum++; | |
| 346 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 347 rgb_2_pix[ L + crb_g ] | | |
| 348 rgb_2_pix[ L + cb_b ]); | |
| 349 | |
| 350 L = *lum++; | |
| 351 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 352 rgb_2_pix[ L + crb_g ] | | |
| 353 rgb_2_pix[ L + cb_b ]); | |
| 354 | |
| 355 | |
| 356 /* Now, do second row. */ | |
| 357 | |
| 358 L = *lum2++; | |
| 359 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 360 rgb_2_pix[ L + crb_g ] | | |
| 361 rgb_2_pix[ L + cb_b ]); | |
| 362 | |
| 363 L = *lum2++; | |
| 364 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 365 rgb_2_pix[ L + crb_g ] | | |
| 366 rgb_2_pix[ L + cb_b ]); | |
| 367 } | |
| 368 | |
| 369 /* | |
| 370 * These values are at the start of the next line, (due | |
| 371 * to the ++'s above),but they need to be at the start | |
| 372 * of the line after that. | |
| 373 */ | |
| 374 lum += cols; | |
| 375 lum2 += cols; | |
| 376 row1 += mod; | |
| 377 row2 += mod; | |
| 378 } | |
| 379 } | |
| 380 | |
| 381 /* | |
| 382 * In this function I make use of a nasty trick. The tables have the lower | |
| 383 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 384 * the horisontal doubling for free (almost). | |
| 385 */ | |
| 386 static void Color16DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 387 unsigned char *lum, unsigned char *cr, | |
| 388 unsigned char *cb, unsigned char *out, | |
| 389 int rows, int cols, int mod ) | |
| 390 { | |
| 391 unsigned int* row1 = (unsigned int*) out; | |
| 392 const int next_row = cols+(mod/2); | |
| 393 unsigned int* row2 = row1 + 2*next_row; | |
| 394 unsigned char* lum2; | |
| 395 int x, y; | |
| 396 int cr_r; | |
| 397 int crb_g; | |
| 398 int cb_b; | |
| 399 int cols_2 = cols / 2; | |
| 400 | |
| 401 lum2 = lum + cols; | |
| 402 | |
| 403 mod = (next_row * 3) + (mod/2); | |
| 404 | |
| 405 y = rows / 2; | |
| 406 while( y-- ) | |
| 407 { | |
| 408 x = cols_2; | |
| 409 while( x-- ) | |
| 410 { | |
| 411 register int L; | |
| 412 | |
| 413 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 414 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 415 + colortab[ *cb + 2*256 ]; | |
| 416 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 417 ++cr; ++cb; | |
| 418 | |
| 419 L = *lum++; | |
| 420 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 421 rgb_2_pix[ L + crb_g ] | | |
| 422 rgb_2_pix[ L + cb_b ]); | |
| 423 row1++; | |
| 424 | |
| 425 L = *lum++; | |
| 426 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 427 rgb_2_pix[ L + crb_g ] | | |
| 428 rgb_2_pix[ L + cb_b ]); | |
| 429 row1++; | |
| 430 | |
| 431 | |
| 432 /* Now, do second row. */ | |
| 433 | |
| 434 L = *lum2++; | |
| 435 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 436 rgb_2_pix[ L + crb_g ] | | |
| 437 rgb_2_pix[ L + cb_b ]); | |
| 438 row2++; | |
| 439 | |
| 440 L = *lum2++; | |
| 441 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 442 rgb_2_pix[ L + crb_g ] | | |
| 443 rgb_2_pix[ L + cb_b ]); | |
| 444 row2++; | |
| 445 } | |
| 446 | |
| 447 /* | |
| 448 * These values are at the start of the next line, (due | |
| 449 * to the ++'s above),but they need to be at the start | |
| 450 * of the line after that. | |
| 451 */ | |
| 452 lum += cols; | |
| 453 lum2 += cols; | |
| 454 row1 += mod; | |
| 455 row2 += mod; | |
| 456 } | |
| 457 } | |
| 458 | |
| 459 static void Color24DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 460 unsigned char *lum, unsigned char *cr, | |
| 461 unsigned char *cb, unsigned char *out, | |
| 462 int rows, int cols, int mod ) | |
| 463 { | |
| 464 unsigned int value; | |
| 465 unsigned char* row1 = out; | |
| 466 const int next_row = (cols*2 + mod) * 3; | |
| 467 unsigned char* row2 = row1 + 2*next_row; | |
| 468 unsigned char* lum2; | |
| 469 int x, y; | |
| 470 int cr_r; | |
| 471 int crb_g; | |
| 472 int cb_b; | |
| 473 int cols_2 = cols / 2; | |
| 474 | |
| 475 lum2 = lum + cols; | |
| 476 | |
| 477 mod = next_row*3 + mod*3; | |
| 478 | |
| 479 y = rows / 2; | |
| 480 while( y-- ) | |
| 481 { | |
| 482 x = cols_2; | |
| 483 while( x-- ) | |
| 484 { | |
| 485 register int L; | |
| 486 | |
| 487 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 488 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 489 + colortab[ *cb + 2*256 ]; | |
| 490 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 491 ++cr; ++cb; | |
| 492 | |
| 493 L = *lum++; | |
| 494 value = (rgb_2_pix[ L + cr_r ] | | |
| 495 rgb_2_pix[ L + crb_g ] | | |
| 496 rgb_2_pix[ L + cb_b ]); | |
| 497 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 498 (value ) & 0xFF; | |
| 499 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 500 (value >> 8) & 0xFF; | |
| 501 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 502 (value >> 16) & 0xFF; | |
| 503 row1 += 2*3; | |
| 504 | |
| 505 L = *lum++; | |
| 506 value = (rgb_2_pix[ L + cr_r ] | | |
| 507 rgb_2_pix[ L + crb_g ] | | |
| 508 rgb_2_pix[ L + cb_b ]); | |
| 509 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 510 (value ) & 0xFF; | |
| 511 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 512 (value >> 8) & 0xFF; | |
| 513 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 514 (value >> 16) & 0xFF; | |
| 515 row1 += 2*3; | |
| 516 | |
| 517 | |
| 518 /* Now, do second row. */ | |
| 519 | |
| 520 L = *lum2++; | |
| 521 value = (rgb_2_pix[ L + cr_r ] | | |
| 522 rgb_2_pix[ L + crb_g ] | | |
| 523 rgb_2_pix[ L + cb_b ]); | |
| 524 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 525 (value ) & 0xFF; | |
| 526 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 527 (value >> 8) & 0xFF; | |
| 528 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 529 (value >> 16) & 0xFF; | |
| 530 row2 += 2*3; | |
| 531 | |
| 532 L = *lum2++; | |
| 533 value = (rgb_2_pix[ L + cr_r ] | | |
| 534 rgb_2_pix[ L + crb_g ] | | |
| 535 rgb_2_pix[ L + cb_b ]); | |
| 536 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 537 (value ) & 0xFF; | |
| 538 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 539 (value >> 8) & 0xFF; | |
| 540 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 541 (value >> 16) & 0xFF; | |
| 542 row2 += 2*3; | |
| 543 } | |
| 544 | |
| 545 /* | |
| 546 * These values are at the start of the next line, (due | |
| 547 * to the ++'s above),but they need to be at the start | |
| 548 * of the line after that. | |
| 549 */ | |
| 550 lum += cols; | |
| 551 lum2 += cols; | |
| 552 row1 += mod; | |
| 553 row2 += mod; | |
| 554 } | |
| 555 } | |
| 556 | |
| 557 static void Color32DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 558 unsigned char *lum, unsigned char *cr, | |
| 559 unsigned char *cb, unsigned char *out, | |
| 560 int rows, int cols, int mod ) | |
| 561 { | |
| 562 unsigned int* row1 = (unsigned int*) out; | |
| 563 const int next_row = cols*2+mod; | |
| 564 unsigned int* row2 = row1 + 2*next_row; | |
| 565 unsigned char* lum2; | |
| 566 int x, y; | |
| 567 int cr_r; | |
| 568 int crb_g; | |
| 569 int cb_b; | |
| 570 int cols_2 = cols / 2; | |
| 571 | |
| 572 lum2 = lum + cols; | |
| 573 | |
| 574 mod = (next_row * 3) + mod; | |
| 575 | |
| 576 y = rows / 2; | |
| 577 while( y-- ) | |
| 578 { | |
| 579 x = cols_2; | |
| 580 while( x-- ) | |
| 581 { | |
| 582 register int L; | |
| 583 | |
| 584 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 585 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 586 + colortab[ *cb + 2*256 ]; | |
| 587 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 588 ++cr; ++cb; | |
| 589 | |
| 590 L = *lum++; | |
| 591 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = | |
| 592 (rgb_2_pix[ L + cr_r ] | | |
| 593 rgb_2_pix[ L + crb_g ] | | |
| 594 rgb_2_pix[ L + cb_b ]); | |
| 595 row1 += 2; | |
| 596 | |
| 597 L = *lum++; | |
| 598 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = | |
| 599 (rgb_2_pix[ L + cr_r ] | | |
| 600 rgb_2_pix[ L + crb_g ] | | |
| 601 rgb_2_pix[ L + cb_b ]); | |
| 602 row1 += 2; | |
| 603 | |
| 604 | |
| 605 /* Now, do second row. */ | |
| 606 | |
| 607 L = *lum2++; | |
| 608 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 609 (rgb_2_pix[ L + cr_r ] | | |
| 610 rgb_2_pix[ L + crb_g ] | | |
| 611 rgb_2_pix[ L + cb_b ]); | |
| 612 row2 += 2; | |
| 613 | |
| 614 L = *lum2++; | |
| 615 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 616 (rgb_2_pix[ L + cr_r ] | | |
| 617 rgb_2_pix[ L + crb_g ] | | |
| 618 rgb_2_pix[ L + cb_b ]); | |
| 619 row2 += 2; | |
| 620 } | |
| 621 | |
| 622 /* | |
| 623 * These values are at the start of the next line, (due | |
| 624 * to the ++'s above),but they need to be at the start | |
| 625 * of the line after that. | |
| 626 */ | |
| 627 lum += cols; | |
| 628 lum2 += cols; | |
| 629 row1 += mod; | |
| 630 row2 += mod; | |
| 631 } | |
| 632 } | |
| 633 | |
| 634 static void Color16DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 635 unsigned char *lum, unsigned char *cr, | |
| 636 unsigned char *cb, unsigned char *out, | |
| 637 int rows, int cols, int mod ) | |
| 638 { | |
| 639 unsigned short* row; | |
| 640 int x, y; | |
| 641 int cr_r; | |
| 642 int crb_g; | |
| 643 int cb_b; | |
| 644 int cols_2 = cols / 2; | |
| 645 | |
| 646 row = (unsigned short*) out; | |
| 647 | |
| 648 y = rows; | |
| 649 while( y-- ) | |
| 650 { | |
| 651 x = cols_2; | |
| 652 while( x-- ) | |
| 653 { | |
| 654 register int L; | |
| 655 | |
| 656 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 657 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 658 + colortab[ *cb + 2*256 ]; | |
| 659 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 660 cr += 4; cb += 4; | |
| 661 | |
| 662 L = *lum; lum += 2; | |
| 663 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 664 rgb_2_pix[ L + crb_g ] | | |
| 665 rgb_2_pix[ L + cb_b ]); | |
| 666 | |
| 667 L = *lum; lum += 2; | |
| 668 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 669 rgb_2_pix[ L + crb_g ] | | |
| 670 rgb_2_pix[ L + cb_b ]); | |
| 671 | |
| 672 } | |
| 673 | |
| 674 row += mod; | |
| 675 } | |
| 676 } | |
| 677 | |
| 678 static void Color24DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 679 unsigned char *lum, unsigned char *cr, | |
| 680 unsigned char *cb, unsigned char *out, | |
| 681 int rows, int cols, int mod ) | |
| 682 { | |
| 683 unsigned int value; | |
| 684 unsigned char* row; | |
| 685 int x, y; | |
| 686 int cr_r; | |
| 687 int crb_g; | |
| 688 int cb_b; | |
| 689 int cols_2 = cols / 2; | |
| 690 | |
| 691 row = (unsigned char*) out; | |
| 692 mod *= 3; | |
| 693 y = rows; | |
| 694 while( y-- ) | |
| 695 { | |
| 696 x = cols_2; | |
| 697 while( x-- ) | |
| 698 { | |
| 699 register int L; | |
| 700 | |
| 701 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 702 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 703 + colortab[ *cb + 2*256 ]; | |
| 704 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 705 cr += 4; cb += 4; | |
| 706 | |
| 707 L = *lum; lum += 2; | |
| 708 value = (rgb_2_pix[ L + cr_r ] | | |
| 709 rgb_2_pix[ L + crb_g ] | | |
| 710 rgb_2_pix[ L + cb_b ]); | |
| 711 *row++ = (value ) & 0xFF; | |
| 712 *row++ = (value >> 8) & 0xFF; | |
| 713 *row++ = (value >> 16) & 0xFF; | |
| 714 | |
| 715 L = *lum; lum += 2; | |
| 716 value = (rgb_2_pix[ L + cr_r ] | | |
| 717 rgb_2_pix[ L + crb_g ] | | |
| 718 rgb_2_pix[ L + cb_b ]); | |
| 719 *row++ = (value ) & 0xFF; | |
| 720 *row++ = (value >> 8) & 0xFF; | |
| 721 *row++ = (value >> 16) & 0xFF; | |
| 722 | |
| 723 } | |
| 724 row += mod; | |
| 725 } | |
| 726 } | |
| 727 | |
| 728 static void Color32DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 729 unsigned char *lum, unsigned char *cr, | |
| 730 unsigned char *cb, unsigned char *out, | |
| 731 int rows, int cols, int mod ) | |
| 732 { | |
| 733 unsigned int* row; | |
| 734 int x, y; | |
| 735 int cr_r; | |
| 736 int crb_g; | |
| 737 int cb_b; | |
| 738 int cols_2 = cols / 2; | |
| 739 | |
| 740 row = (unsigned int*) out; | |
| 741 y = rows; | |
| 742 while( y-- ) | |
| 743 { | |
| 744 x = cols_2; | |
| 745 while( x-- ) | |
| 746 { | |
| 747 register int L; | |
| 748 | |
| 749 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 750 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 751 + colortab[ *cb + 2*256 ]; | |
| 752 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 753 cr += 4; cb += 4; | |
| 754 | |
| 755 L = *lum; lum += 2; | |
| 756 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 757 rgb_2_pix[ L + crb_g ] | | |
| 758 rgb_2_pix[ L + cb_b ]); | |
| 759 | |
| 760 L = *lum; lum += 2; | |
| 761 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 762 rgb_2_pix[ L + crb_g ] | | |
| 763 rgb_2_pix[ L + cb_b ]); | |
| 764 | |
| 765 | |
| 766 } | |
| 767 row += mod; | |
| 768 } | |
| 769 } | |
| 770 | |
| 771 /* | |
| 772 * In this function I make use of a nasty trick. The tables have the lower | |
| 773 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 774 * the horisontal doubling for free (almost). | |
| 775 */ | |
| 776 static void Color16DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 777 unsigned char *lum, unsigned char *cr, | |
| 778 unsigned char *cb, unsigned char *out, | |
| 779 int rows, int cols, int mod ) | |
| 780 { | |
| 781 unsigned int* row = (unsigned int*) out; | |
| 782 const int next_row = cols+(mod/2); | |
| 783 int x, y; | |
| 784 int cr_r; | |
| 785 int crb_g; | |
| 786 int cb_b; | |
| 787 int cols_2 = cols / 2; | |
| 788 | |
| 789 y = rows; | |
| 790 while( y-- ) | |
| 791 { | |
| 792 x = cols_2; | |
| 793 while( x-- ) | |
| 794 { | |
| 795 register int L; | |
| 796 | |
| 797 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 798 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 799 + colortab[ *cb + 2*256 ]; | |
| 800 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 801 cr += 4; cb += 4; | |
| 802 | |
| 803 L = *lum; lum += 2; | |
| 804 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 805 rgb_2_pix[ L + crb_g ] | | |
| 806 rgb_2_pix[ L + cb_b ]); | |
| 807 row++; | |
| 808 | |
| 809 L = *lum; lum += 2; | |
| 810 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 811 rgb_2_pix[ L + crb_g ] | | |
| 812 rgb_2_pix[ L + cb_b ]); | |
| 813 row++; | |
| 814 | |
| 815 } | |
| 816 row += next_row; | |
| 817 } | |
| 818 } | |
| 819 | |
| 820 static void Color24DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 821 unsigned char *lum, unsigned char *cr, | |
| 822 unsigned char *cb, unsigned char *out, | |
| 823 int rows, int cols, int mod ) | |
| 824 { | |
| 825 unsigned int value; | |
| 826 unsigned char* row = out; | |
| 827 const int next_row = (cols*2 + mod) * 3; | |
| 828 int x, y; | |
| 829 int cr_r; | |
| 830 int crb_g; | |
| 831 int cb_b; | |
| 832 int cols_2 = cols / 2; | |
| 833 y = rows; | |
| 834 while( y-- ) | |
| 835 { | |
| 836 x = cols_2; | |
| 837 while( x-- ) | |
| 838 { | |
| 839 register int L; | |
| 840 | |
| 841 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 842 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 843 + colortab[ *cb + 2*256 ]; | |
| 844 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 845 cr += 4; cb += 4; | |
| 846 | |
| 847 L = *lum; lum += 2; | |
| 848 value = (rgb_2_pix[ L + cr_r ] | | |
| 849 rgb_2_pix[ L + crb_g ] | | |
| 850 rgb_2_pix[ L + cb_b ]); | |
| 851 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 852 (value ) & 0xFF; | |
| 853 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 854 (value >> 8) & 0xFF; | |
| 855 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 856 (value >> 16) & 0xFF; | |
| 857 row += 2*3; | |
| 858 | |
| 859 L = *lum; lum += 2; | |
| 860 value = (rgb_2_pix[ L + cr_r ] | | |
| 861 rgb_2_pix[ L + crb_g ] | | |
| 862 rgb_2_pix[ L + cb_b ]); | |
| 863 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 864 (value ) & 0xFF; | |
| 865 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 866 (value >> 8) & 0xFF; | |
| 867 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 868 (value >> 16) & 0xFF; | |
| 869 row += 2*3; | |
| 870 | |
| 871 } | |
| 872 row += next_row; | |
| 873 } | |
| 874 } | |
| 875 | |
| 876 static void Color32DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 877 unsigned char *lum, unsigned char *cr, | |
| 878 unsigned char *cb, unsigned char *out, | |
| 879 int rows, int cols, int mod ) | |
| 880 { | |
| 881 unsigned int* row = (unsigned int*) out; | |
| 882 const int next_row = cols*2+mod; | |
| 883 int x, y; | |
| 884 int cr_r; | |
| 885 int crb_g; | |
| 886 int cb_b; | |
| 887 int cols_2 = cols / 2; | |
| 888 mod+=mod; | |
| 889 y = rows; | |
| 890 while( y-- ) | |
| 891 { | |
| 892 x = cols_2; | |
| 893 while( x-- ) | |
| 894 { | |
| 895 register int L; | |
| 896 | |
| 897 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 898 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 899 + colortab[ *cb + 2*256 ]; | |
| 900 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 901 cr += 4; cb += 4; | |
| 902 | |
| 903 L = *lum; lum += 2; | |
| 904 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 905 (rgb_2_pix[ L + cr_r ] | | |
| 906 rgb_2_pix[ L + crb_g ] | | |
| 907 rgb_2_pix[ L + cb_b ]); | |
| 908 row += 2; | |
| 909 | |
| 910 L = *lum; lum += 2; | |
| 911 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 912 (rgb_2_pix[ L + cr_r ] | | |
| 913 rgb_2_pix[ L + crb_g ] | | |
| 914 rgb_2_pix[ L + cb_b ]); | |
| 915 row += 2; | |
| 916 | |
| 917 | |
| 918 } | |
| 919 | |
| 920 row += next_row; | |
| 921 } | |
| 922 } | |
| 923 | |
| 924 /* | |
| 925 * How many 1 bits are there in the Uint32. | |
| 926 * Low performance, do not call often. | |
| 927 */ | |
| 928 static int number_of_bits_set( Uint32 a ) | |
| 929 { | |
| 930 if(!a) return 0; | |
| 931 if(a & 1) return 1 + number_of_bits_set(a >> 1); | |
| 932 return(number_of_bits_set(a >> 1)); | |
| 933 } | |
| 934 | |
| 935 /* | |
| 936 * How many 0 bits are there at least significant end of Uint32. | |
| 937 * Low performance, do not call often. | |
| 938 */ | |
| 939 static int free_bits_at_bottom( Uint32 a ) | |
| 940 { | |
| 941 /* assume char is 8 bits */ | |
| 942 if(!a) return sizeof(Uint32) * 8; | |
| 943 if(((Sint32)a) & 1l) return 0; | |
| 944 return 1 + free_bits_at_bottom ( a >> 1); | |
| 945 } | |
| 946 | |
| 947 | |
| 948 SDL_Overlay *SDL_CreateYUV_SW(_THIS, int width, int height, Uint32 format, SDL_Surface *display) | |
| 949 { | |
| 950 SDL_Overlay *overlay; | |
| 951 struct private_yuvhwdata *swdata; | |
| 952 int *Cr_r_tab; | |
| 953 int *Cr_g_tab; | |
| 954 int *Cb_g_tab; | |
| 955 int *Cb_b_tab; | |
| 956 Uint32 *r_2_pix_alloc; | |
| 957 Uint32 *g_2_pix_alloc; | |
| 958 Uint32 *b_2_pix_alloc; | |
| 959 int i, cpu_mmx; | |
| 960 int CR, CB; | |
| 961 Uint32 Rmask, Gmask, Bmask; | |
| 962 | |
| 963 /* Only RGB packed pixel conversion supported */ | |
| 964 if ( (display->format->BytesPerPixel != 2) && | |
| 965 (display->format->BytesPerPixel != 3) && | |
| 966 (display->format->BytesPerPixel != 4) ) { | |
| 967 SDL_SetError("Can't use YUV data on non 16/24/32 bit surfaces"); | |
| 968 return(NULL); | |
| 969 } | |
| 970 | |
| 971 /* Verify that we support the format */ | |
| 972 switch (format) { | |
| 973 case SDL_YV12_OVERLAY: | |
| 974 case SDL_IYUV_OVERLAY: | |
| 975 case SDL_YUY2_OVERLAY: | |
| 976 case SDL_UYVY_OVERLAY: | |
| 977 case SDL_YVYU_OVERLAY: | |
| 978 break; | |
| 979 default: | |
| 980 SDL_SetError("Unsupported YUV format"); | |
| 981 return(NULL); | |
| 982 } | |
| 983 | |
| 984 /* Create the overlay structure */ | |
| 985 overlay = (SDL_Overlay *)malloc(sizeof *overlay); | |
| 986 if ( overlay == NULL ) { | |
| 987 SDL_OutOfMemory(); | |
| 988 return(NULL); | |
| 989 } | |
| 990 memset(overlay, 0, (sizeof *overlay)); | |
| 991 | |
| 992 /* Fill in the basic members */ | |
| 993 overlay->format = format; | |
| 994 overlay->w = width; | |
| 995 overlay->h = height; | |
| 996 | |
| 997 /* Set up the YUV surface function structure */ | |
| 998 overlay->hwfuncs = &sw_yuvfuncs; | |
| 999 | |
| 1000 /* Create the pixel data and lookup tables */ | |
| 1001 swdata = (struct private_yuvhwdata *)malloc(sizeof *swdata); | |
| 1002 overlay->hwdata = swdata; | |
| 1003 if ( swdata == NULL ) { | |
| 1004 SDL_OutOfMemory(); | |
| 1005 SDL_FreeYUVOverlay(overlay); | |
| 1006 return(NULL); | |
| 1007 } | |
| 1008 swdata->stretch = NULL; | |
| 1009 swdata->display = display; | |
| 1010 swdata->pixels = (Uint8 *) malloc(width*height*2); | |
| 1011 swdata->colortab = (int *)malloc(4*256*sizeof(int)); | |
| 1012 Cr_r_tab = &swdata->colortab[0*256]; | |
| 1013 Cr_g_tab = &swdata->colortab[1*256]; | |
| 1014 Cb_g_tab = &swdata->colortab[2*256]; | |
| 1015 Cb_b_tab = &swdata->colortab[3*256]; | |
| 1016 swdata->rgb_2_pix = (Uint32 *)malloc(3*768*sizeof(Uint32)); | |
| 1017 r_2_pix_alloc = &swdata->rgb_2_pix[0*768]; | |
| 1018 g_2_pix_alloc = &swdata->rgb_2_pix[1*768]; | |
| 1019 b_2_pix_alloc = &swdata->rgb_2_pix[2*768]; | |
| 1020 if ( ! swdata->pixels || ! swdata->colortab || ! swdata->rgb_2_pix ) { | |
| 1021 SDL_OutOfMemory(); | |
| 1022 SDL_FreeYUVOverlay(overlay); | |
| 1023 return(NULL); | |
| 1024 } | |
| 1025 | |
| 1026 /* Generate the tables for the display surface */ | |
| 1027 for (i=0; i<256; i++) { | |
| 1028 /* Gamma correction (luminescence table) and chroma correction | |
| 1029 would be done here. See the Berkeley mpeg_play sources. | |
| 1030 */ | |
| 1031 CB = CR = (i-128); | |
| 1032 Cr_r_tab[i] = (int) ( (0.419/0.299) * CR); | |
| 1033 Cr_g_tab[i] = (int) (-(0.299/0.419) * CR); | |
| 1034 Cb_g_tab[i] = (int) (-(0.114/0.331) * CB); | |
| 1035 Cb_b_tab[i] = (int) ( (0.587/0.331) * CB); | |
| 1036 } | |
| 1037 | |
| 1038 /* | |
| 1039 * Set up entries 0-255 in rgb-to-pixel value tables. | |
| 1040 */ | |
| 1041 Rmask = display->format->Rmask; | |
| 1042 Gmask = display->format->Gmask; | |
| 1043 Bmask = display->format->Bmask; | |
| 1044 for ( i=0; i<256; ++i ) { | |
| 1045 r_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Rmask)); | |
| 1046 r_2_pix_alloc[i+256] <<= free_bits_at_bottom(Rmask); | |
| 1047 g_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Gmask)); | |
| 1048 g_2_pix_alloc[i+256] <<= free_bits_at_bottom(Gmask); | |
| 1049 b_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Bmask)); | |
| 1050 b_2_pix_alloc[i+256] <<= free_bits_at_bottom(Bmask); | |
| 1051 } | |
| 1052 | |
| 1053 /* | |
| 1054 * If we have 16-bit output depth, then we double the value | |
| 1055 * in the top word. This means that we can write out both | |
| 1056 * pixels in the pixel doubling mode with one op. It is | |
| 1057 * harmless in the normal case as storing a 32-bit value | |
| 1058 * through a short pointer will lose the top bits anyway. | |
| 1059 */ | |
| 1060 if( display->format->BytesPerPixel == 2 ) { | |
| 1061 for ( i=0; i<256; ++i ) { | |
| 1062 r_2_pix_alloc[i+256] |= (r_2_pix_alloc[i+256]) << 16; | |
| 1063 g_2_pix_alloc[i+256] |= (g_2_pix_alloc[i+256]) << 16; | |
| 1064 b_2_pix_alloc[i+256] |= (b_2_pix_alloc[i+256]) << 16; | |
| 1065 } | |
| 1066 } | |
| 1067 | |
| 1068 /* | |
| 1069 * Spread out the values we have to the rest of the array so that | |
| 1070 * we do not need to check for overflow. | |
| 1071 */ | |
| 1072 for ( i=0; i<256; ++i ) { | |
| 1073 r_2_pix_alloc[i] = r_2_pix_alloc[256]; | |
| 1074 r_2_pix_alloc[i+512] = r_2_pix_alloc[511]; | |
| 1075 g_2_pix_alloc[i] = g_2_pix_alloc[256]; | |
| 1076 g_2_pix_alloc[i+512] = g_2_pix_alloc[511]; | |
| 1077 b_2_pix_alloc[i] = b_2_pix_alloc[256]; | |
| 1078 b_2_pix_alloc[i+512] = b_2_pix_alloc[511]; | |
| 1079 } | |
| 1080 | |
| 1081 /* You have chosen wisely... */ | |
| 1082 switch (format) { | |
| 1083 case SDL_YV12_OVERLAY: | |
| 1084 case SDL_IYUV_OVERLAY: | |
| 1085 cpu_mmx = CPU_Flags() & MMX_CPU; | |
| 1086 if ( display->format->BytesPerPixel == 2 ) { | |
| 1087 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) | |
| 1088 /* inline assembly functions */ | |
| 1089 if ( cpu_mmx && (Rmask == 0xF800) && | |
| 1090 (Gmask == 0x07E0) && | |
| 1091 (Bmask == 0x001F) && | |
| 1092 (width & 15) == 0) { | |
| 1093 /*printf("Using MMX 16-bit 565 dither\n");*/ | |
| 1094 swdata->Display1X = Color565DitherYV12MMX1X; | |
| 1095 } else { | |
| 1096 /*printf("Using C 16-bit dither\n");*/ | |
| 1097 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1098 } | |
| 1099 #else | |
| 1100 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1101 #endif | |
| 1102 swdata->Display2X = Color16DitherYV12Mod2X; | |
| 1103 } | |
| 1104 if ( display->format->BytesPerPixel == 3 ) { | |
| 1105 swdata->Display1X = Color24DitherYV12Mod1X; | |
| 1106 swdata->Display2X = Color24DitherYV12Mod2X; | |
| 1107 } | |
| 1108 if ( display->format->BytesPerPixel == 4 ) { | |
| 1109 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) | |
| 1110 /* inline assembly functions */ | |
| 1111 if ( cpu_mmx && (Rmask == 0x00FF0000) && | |
| 1112 (Gmask == 0x0000FF00) && | |
| 1113 (Bmask == 0x000000FF) && | |
| 1114 (width & 15) == 0) { | |
| 1115 /*printf("Using MMX 32-bit dither\n");*/ | |
| 1116 swdata->Display1X = ColorRGBDitherYV12MMX1X; | |
| 1117 } else { | |
| 1118 /*printf("Using C 32-bit dither\n");*/ | |
| 1119 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1120 } | |
| 1121 #else | |
| 1122 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1123 #endif | |
| 1124 swdata->Display2X = Color32DitherYV12Mod2X; | |
| 1125 } | |
| 1126 break; | |
| 1127 case SDL_YUY2_OVERLAY: | |
| 1128 case SDL_UYVY_OVERLAY: | |
| 1129 case SDL_YVYU_OVERLAY: | |
| 1130 if ( display->format->BytesPerPixel == 2 ) { | |
| 1131 swdata->Display1X = Color16DitherYUY2Mod1X; | |
| 1132 swdata->Display2X = Color16DitherYUY2Mod2X; | |
| 1133 } | |
| 1134 if ( display->format->BytesPerPixel == 3 ) { | |
| 1135 swdata->Display1X = Color24DitherYUY2Mod1X; | |
| 1136 swdata->Display2X = Color24DitherYUY2Mod2X; | |
| 1137 } | |
| 1138 if ( display->format->BytesPerPixel == 4 ) { | |
| 1139 swdata->Display1X = Color32DitherYUY2Mod1X; | |
| 1140 swdata->Display2X = Color32DitherYUY2Mod2X; | |
| 1141 } | |
| 1142 break; | |
| 1143 default: | |
| 1144 /* We should never get here (caught above) */ | |
| 1145 break; | |
| 1146 } | |
| 1147 | |
| 1148 /* Find the pitch and offset values for the overlay */ | |
| 1149 overlay->pitches = swdata->pitches; | |
| 1150 overlay->pixels = swdata->planes; | |
| 1151 switch (format) { | |
| 1152 case SDL_YV12_OVERLAY: | |
| 1153 case SDL_IYUV_OVERLAY: | |
| 1154 overlay->pitches[0] = overlay->w; | |
| 1155 overlay->pitches[1] = overlay->pitches[0] / 2; | |
| 1156 overlay->pitches[2] = overlay->pitches[0] / 2; | |
| 1157 overlay->pixels[0] = swdata->pixels; | |
| 1158 overlay->pixels[1] = overlay->pixels[0] + | |
| 1159 overlay->pitches[0] * overlay->h; | |
| 1160 overlay->pixels[2] = overlay->pixels[1] + | |
| 1161 overlay->pitches[1] * overlay->h / 2; | |
| 1162 overlay->planes = 3; | |
| 1163 break; | |
| 1164 case SDL_YUY2_OVERLAY: | |
| 1165 case SDL_UYVY_OVERLAY: | |
| 1166 case SDL_YVYU_OVERLAY: | |
| 1167 overlay->pitches[0] = overlay->w*2; | |
| 1168 overlay->pixels[0] = swdata->pixels; | |
| 1169 overlay->planes = 1; | |
| 1170 break; | |
| 1171 default: | |
| 1172 /* We should never get here (caught above) */ | |
| 1173 break; | |
| 1174 } | |
| 1175 | |
| 1176 /* We're all done.. */ | |
| 1177 return(overlay); | |
| 1178 } | |
| 1179 | |
| 1180 int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1181 { | |
| 1182 return(0); | |
| 1183 } | |
| 1184 | |
| 1185 void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1186 { | |
| 1187 return; | |
| 1188 } | |
| 1189 | |
| 1190 int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 1191 { | |
| 1192 struct private_yuvhwdata *swdata; | |
| 1193 SDL_Surface *stretch; | |
| 1194 SDL_Surface *display; | |
| 1195 int scale_2x; | |
| 1196 Uint8 *lum, *Cr, *Cb; | |
| 1197 Uint8 *dst; | |
| 1198 int mod; | |
| 1199 | |
| 1200 swdata = overlay->hwdata; | |
| 1201 scale_2x = 0; | |
| 1202 stretch = 0; | |
| 1203 if ( (overlay->w != dstrect->w) || (overlay->h != dstrect->h) ) { | |
| 1204 if ( (dstrect->w == 2*overlay->w) && | |
| 1205 (dstrect->h == 2*overlay->h) ) { | |
| 1206 scale_2x = 1; | |
| 1207 } else { | |
| 1208 if ( ! swdata->stretch ) { | |
| 1209 display = swdata->display; | |
| 1210 swdata->stretch = SDL_CreateRGBSurface( | |
| 1211 SDL_SWSURFACE, | |
| 1212 overlay->w, overlay->h, | |
| 1213 display->format->BitsPerPixel, | |
| 1214 display->format->Rmask, | |
| 1215 display->format->Gmask, | |
| 1216 display->format->Bmask, 0); | |
| 1217 if ( ! swdata->stretch ) { | |
| 1218 return(-1); | |
| 1219 } | |
| 1220 } | |
| 1221 stretch = swdata->stretch; | |
| 1222 } | |
| 1223 } | |
| 1224 | |
| 1225 if ( stretch ) { | |
| 1226 display = stretch; | |
| 1227 } else { | |
| 1228 display = swdata->display; | |
| 1229 } | |
| 1230 switch (overlay->format) { | |
| 1231 case SDL_YV12_OVERLAY: | |
| 1232 lum = overlay->pixels[0]; | |
| 1233 Cr = overlay->pixels[1]; | |
| 1234 Cb = overlay->pixels[2]; | |
| 1235 break; | |
| 1236 case SDL_IYUV_OVERLAY: | |
| 1237 lum = overlay->pixels[0]; | |
| 1238 Cr = overlay->pixels[2]; | |
| 1239 Cb = overlay->pixels[1]; | |
| 1240 break; | |
| 1241 case SDL_YUY2_OVERLAY: | |
| 1242 lum = overlay->pixels[0]; | |
| 1243 Cr = lum + 3; | |
| 1244 Cb = lum + 1; | |
| 1245 break; | |
| 1246 case SDL_UYVY_OVERLAY: | |
| 1247 lum = overlay->pixels[0]+1; | |
| 1248 Cr = lum + 1; | |
| 1249 Cb = lum - 1; | |
| 1250 break; | |
| 1251 case SDL_YVYU_OVERLAY: | |
| 1252 lum = overlay->pixels[0]; | |
| 1253 Cr = lum + 1; | |
| 1254 Cb = lum + 3; | |
| 1255 break; | |
| 1256 default: | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
1257 SDL_SetError("Unsupported YUV format in blit"); |
| 0 | 1258 return(-1); |
| 1259 } | |
| 1260 if ( SDL_MUSTLOCK(display) ) { | |
| 1261 if ( SDL_LockSurface(display) < 0 ) { | |
| 1262 return(-1); | |
| 1263 } | |
| 1264 } | |
| 1265 if ( stretch ) { | |
| 1266 dst = (Uint8 *)stretch->pixels; | |
| 1267 } else { | |
| 1268 dst = (Uint8 *)display->pixels | |
| 1269 + dstrect->x * display->format->BytesPerPixel | |
| 1270 + dstrect->y * display->pitch; | |
| 1271 } | |
| 1272 mod = (display->pitch / display->format->BytesPerPixel); | |
| 1273 | |
| 1274 if ( scale_2x ) { | |
| 1275 mod -= (overlay->w * 2); | |
| 1276 swdata->Display2X(swdata->colortab, swdata->rgb_2_pix, | |
| 1277 lum, Cr, Cb, dst, overlay->h, overlay->w,mod); | |
| 1278 } else { | |
| 1279 mod -= overlay->w; | |
| 1280 swdata->Display1X(swdata->colortab, swdata->rgb_2_pix, | |
| 1281 lum, Cr, Cb, dst, overlay->h, overlay->w,mod); | |
| 1282 } | |
| 1283 if ( SDL_MUSTLOCK(display) ) { | |
| 1284 SDL_UnlockSurface(display); | |
| 1285 } | |
| 1286 if ( stretch ) { | |
| 1287 display = swdata->display; | |
| 1288 SDL_SoftStretch(stretch, NULL, display, dstrect); | |
| 1289 } | |
| 1290 SDL_UpdateRects(display, 1, dstrect); | |
| 1291 | |
| 1292 return(0); | |
| 1293 } | |
| 1294 | |
| 1295 void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1296 { | |
| 1297 struct private_yuvhwdata *swdata; | |
| 1298 | |
| 1299 swdata = overlay->hwdata; | |
| 1300 if ( swdata ) { | |
|
9
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1301 if ( swdata->stretch ) { |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1302 SDL_FreeSurface(swdata->stretch); |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1303 } |
| 0 | 1304 if ( swdata->pixels ) { |
| 1305 free(swdata->pixels); | |
| 1306 } | |
| 1307 if ( swdata->colortab ) { | |
| 1308 free(swdata->colortab); | |
| 1309 } | |
| 1310 if ( swdata->rgb_2_pix ) { | |
| 1311 free(swdata->rgb_2_pix); | |
| 1312 } | |
| 1313 free(swdata); | |
| 1314 } | |
| 1315 } |