Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv_sw.c @ 1361:19418e4422cb
New configure-based build system. Still work in progress, but much improved
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 16 Feb 2006 10:11:48 +0000 |
| parents | c71e05b4dc2e |
| children | d910939febfa |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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parents:
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13 Lesser General Public License for more details. |
| 0 | 14 |
|
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parents:
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changeset
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15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
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16 License along with this library; if not, write to the Free Software |
|
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 /* This is the software implementation of the YUV video overlay support */ | |
| 24 | |
| 25 /* This code was derived from code carrying the following copyright notices: | |
| 26 | |
| 27 * Copyright (c) 1995 The Regents of the University of California. | |
| 28 * All rights reserved. | |
| 29 * | |
| 30 * Permission to use, copy, modify, and distribute this software and its | |
| 31 * documentation for any purpose, without fee, and without written agreement is | |
| 32 * hereby granted, provided that the above copyright notice and the following | |
| 33 * two paragraphs appear in all copies of this software. | |
| 34 * | |
| 35 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR | |
| 36 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT | |
| 37 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF | |
| 38 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 39 * | |
| 40 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, | |
| 41 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | |
| 42 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | |
| 43 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO | |
| 44 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 45 | |
| 46 * Copyright (c) 1995 Erik Corry | |
| 47 * All rights reserved. | |
| 48 * | |
| 49 * Permission to use, copy, modify, and distribute this software and its | |
| 50 * documentation for any purpose, without fee, and without written agreement is | |
| 51 * hereby granted, provided that the above copyright notice and the following | |
| 52 * two paragraphs appear in all copies of this software. | |
| 53 * | |
| 54 * IN NO EVENT SHALL ERIK CORRY BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, | |
| 55 * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF | |
| 56 * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF ERIK CORRY HAS BEEN ADVISED | |
| 57 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 58 * | |
| 59 * ERIK CORRY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT | |
| 60 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
| 61 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" | |
| 62 * BASIS, AND ERIK CORRY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, | |
| 63 * UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 64 | |
| 65 * Portions of this software Copyright (c) 1995 Brown University. | |
| 66 * All rights reserved. | |
| 67 * | |
| 68 * Permission to use, copy, modify, and distribute this software and its | |
| 69 * documentation for any purpose, without fee, and without written agreement | |
| 70 * is hereby granted, provided that the above copyright notice and the | |
| 71 * following two paragraphs appear in all copies of this software. | |
| 72 * | |
| 73 * IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR | |
| 74 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT | |
| 75 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN | |
| 76 * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 77 * | |
| 78 * BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT | |
| 79 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
| 80 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" | |
| 81 * BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, | |
| 82 * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 83 */ | |
| 84 | |
| 85 #include "SDL_video.h" | |
|
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86 #include "SDL_cpuinfo.h" |
| 0 | 87 #include "SDL_stretch_c.h" |
| 88 #include "SDL_yuvfuncs.h" | |
| 89 #include "SDL_yuv_sw_c.h" | |
| 90 | |
| 91 /* The functions used to manipulate software video overlays */ | |
| 92 static struct private_yuvhwfuncs sw_yuvfuncs = { | |
| 93 SDL_LockYUV_SW, | |
| 94 SDL_UnlockYUV_SW, | |
| 95 SDL_DisplayYUV_SW, | |
| 96 SDL_FreeYUV_SW | |
| 97 }; | |
| 98 | |
| 99 /* RGB conversion lookup tables */ | |
| 100 struct private_yuvhwdata { | |
| 101 SDL_Surface *stretch; | |
| 102 SDL_Surface *display; | |
| 103 Uint8 *pixels; | |
| 104 int *colortab; | |
| 105 Uint32 *rgb_2_pix; | |
| 106 void (*Display1X)(int *colortab, Uint32 *rgb_2_pix, | |
| 107 unsigned char *lum, unsigned char *cr, | |
| 108 unsigned char *cb, unsigned char *out, | |
| 109 int rows, int cols, int mod ); | |
| 110 void (*Display2X)(int *colortab, Uint32 *rgb_2_pix, | |
| 111 unsigned char *lum, unsigned char *cr, | |
| 112 unsigned char *cb, unsigned char *out, | |
| 113 int rows, int cols, int mod ); | |
| 114 | |
| 115 /* These are just so we don't have to allocate them separately */ | |
| 116 Uint16 pitches[3]; | |
| 117 Uint8 *planes[3]; | |
| 118 }; | |
| 119 | |
| 120 | |
| 121 /* The colorspace conversion functions */ | |
| 122 | |
| 123 extern void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, | |
| 124 unsigned char *lum, unsigned char *cr, | |
| 125 unsigned char *cb, unsigned char *out, | |
| 126 int rows, int cols, int mod ); | |
| 127 extern void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, | |
| 128 unsigned char *lum, unsigned char *cr, | |
| 129 unsigned char *cb, unsigned char *out, | |
| 130 int rows, int cols, int mod ); | |
| 131 | |
| 132 static void Color16DitherYV12Mod1X( 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 { | |
| 137 unsigned short* row1; | |
| 138 unsigned short* row2; | |
| 139 unsigned char* lum2; | |
| 140 int x, y; | |
| 141 int cr_r; | |
| 142 int crb_g; | |
| 143 int cb_b; | |
| 144 int cols_2 = cols / 2; | |
| 145 | |
| 146 row1 = (unsigned short*) out; | |
| 147 row2 = row1 + cols + mod; | |
| 148 lum2 = lum + cols; | |
| 149 | |
| 150 mod += cols + mod; | |
| 151 | |
| 152 y = rows / 2; | |
| 153 while( y-- ) | |
| 154 { | |
| 155 x = cols_2; | |
| 156 while( x-- ) | |
| 157 { | |
| 158 register int L; | |
| 159 | |
| 160 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 161 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 162 + colortab[ *cb + 2*256 ]; | |
| 163 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 164 ++cr; ++cb; | |
| 165 | |
| 166 L = *lum++; | |
| 167 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 168 rgb_2_pix[ L + crb_g ] | | |
| 169 rgb_2_pix[ L + cb_b ]); | |
| 170 | |
| 171 L = *lum++; | |
| 172 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 173 rgb_2_pix[ L + crb_g ] | | |
| 174 rgb_2_pix[ L + cb_b ]); | |
| 175 | |
| 176 | |
| 177 /* Now, do second row. */ | |
| 178 | |
| 179 L = *lum2++; | |
| 180 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 181 rgb_2_pix[ L + crb_g ] | | |
| 182 rgb_2_pix[ L + cb_b ]); | |
| 183 | |
| 184 L = *lum2++; | |
| 185 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 186 rgb_2_pix[ L + crb_g ] | | |
| 187 rgb_2_pix[ L + cb_b ]); | |
| 188 } | |
| 189 | |
| 190 /* | |
| 191 * These values are at the start of the next line, (due | |
| 192 * to the ++'s above),but they need to be at the start | |
| 193 * of the line after that. | |
| 194 */ | |
| 195 lum += cols; | |
| 196 lum2 += cols; | |
| 197 row1 += mod; | |
| 198 row2 += mod; | |
| 199 } | |
| 200 } | |
| 201 | |
| 202 static void Color24DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 203 unsigned char *lum, unsigned char *cr, | |
| 204 unsigned char *cb, unsigned char *out, | |
| 205 int rows, int cols, int mod ) | |
| 206 { | |
| 207 unsigned int value; | |
| 208 unsigned char* row1; | |
| 209 unsigned char* row2; | |
| 210 unsigned char* lum2; | |
| 211 int x, y; | |
| 212 int cr_r; | |
| 213 int crb_g; | |
| 214 int cb_b; | |
| 215 int cols_2 = cols / 2; | |
| 216 | |
| 217 row1 = out; | |
| 218 row2 = row1 + cols*3 + mod*3; | |
| 219 lum2 = lum + cols; | |
| 220 | |
| 221 mod += cols + mod; | |
| 222 mod *= 3; | |
| 223 | |
| 224 y = rows / 2; | |
| 225 while( y-- ) | |
| 226 { | |
| 227 x = cols_2; | |
| 228 while( x-- ) | |
| 229 { | |
| 230 register int L; | |
| 231 | |
| 232 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 233 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 234 + colortab[ *cb + 2*256 ]; | |
| 235 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 236 ++cr; ++cb; | |
| 237 | |
| 238 L = *lum++; | |
| 239 value = (rgb_2_pix[ L + cr_r ] | | |
| 240 rgb_2_pix[ L + crb_g ] | | |
| 241 rgb_2_pix[ L + cb_b ]); | |
| 242 *row1++ = (value ) & 0xFF; | |
| 243 *row1++ = (value >> 8) & 0xFF; | |
| 244 *row1++ = (value >> 16) & 0xFF; | |
| 245 | |
| 246 L = *lum++; | |
| 247 value = (rgb_2_pix[ L + cr_r ] | | |
| 248 rgb_2_pix[ L + crb_g ] | | |
| 249 rgb_2_pix[ L + cb_b ]); | |
| 250 *row1++ = (value ) & 0xFF; | |
| 251 *row1++ = (value >> 8) & 0xFF; | |
| 252 *row1++ = (value >> 16) & 0xFF; | |
| 253 | |
| 254 | |
| 255 /* Now, do second row. */ | |
| 256 | |
| 257 L = *lum2++; | |
| 258 value = (rgb_2_pix[ L + cr_r ] | | |
| 259 rgb_2_pix[ L + crb_g ] | | |
| 260 rgb_2_pix[ L + cb_b ]); | |
| 261 *row2++ = (value ) & 0xFF; | |
| 262 *row2++ = (value >> 8) & 0xFF; | |
| 263 *row2++ = (value >> 16) & 0xFF; | |
| 264 | |
| 265 L = *lum2++; | |
| 266 value = (rgb_2_pix[ L + cr_r ] | | |
| 267 rgb_2_pix[ L + crb_g ] | | |
| 268 rgb_2_pix[ L + cb_b ]); | |
| 269 *row2++ = (value ) & 0xFF; | |
| 270 *row2++ = (value >> 8) & 0xFF; | |
| 271 *row2++ = (value >> 16) & 0xFF; | |
| 272 } | |
| 273 | |
| 274 /* | |
| 275 * These values are at the start of the next line, (due | |
| 276 * to the ++'s above),but they need to be at the start | |
| 277 * of the line after that. | |
| 278 */ | |
| 279 lum += cols; | |
| 280 lum2 += cols; | |
| 281 row1 += mod; | |
| 282 row2 += mod; | |
| 283 } | |
| 284 } | |
| 285 | |
| 286 static void Color32DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 287 unsigned char *lum, unsigned char *cr, | |
| 288 unsigned char *cb, unsigned char *out, | |
| 289 int rows, int cols, int mod ) | |
| 290 { | |
| 291 unsigned int* row1; | |
| 292 unsigned int* row2; | |
| 293 unsigned char* lum2; | |
| 294 int x, y; | |
| 295 int cr_r; | |
| 296 int crb_g; | |
| 297 int cb_b; | |
| 298 int cols_2 = cols / 2; | |
| 299 | |
| 300 row1 = (unsigned int*) out; | |
| 301 row2 = row1 + cols + mod; | |
| 302 lum2 = lum + cols; | |
| 303 | |
| 304 mod += cols + mod; | |
| 305 | |
| 306 y = rows / 2; | |
| 307 while( y-- ) | |
| 308 { | |
| 309 x = cols_2; | |
| 310 while( x-- ) | |
| 311 { | |
| 312 register int L; | |
| 313 | |
| 314 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 315 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 316 + colortab[ *cb + 2*256 ]; | |
| 317 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 318 ++cr; ++cb; | |
| 319 | |
| 320 L = *lum++; | |
| 321 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 322 rgb_2_pix[ L + crb_g ] | | |
| 323 rgb_2_pix[ L + cb_b ]); | |
| 324 | |
| 325 L = *lum++; | |
| 326 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 327 rgb_2_pix[ L + crb_g ] | | |
| 328 rgb_2_pix[ L + cb_b ]); | |
| 329 | |
| 330 | |
| 331 /* Now, do second row. */ | |
| 332 | |
| 333 L = *lum2++; | |
| 334 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 335 rgb_2_pix[ L + crb_g ] | | |
| 336 rgb_2_pix[ L + cb_b ]); | |
| 337 | |
| 338 L = *lum2++; | |
| 339 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 340 rgb_2_pix[ L + crb_g ] | | |
| 341 rgb_2_pix[ L + cb_b ]); | |
| 342 } | |
| 343 | |
| 344 /* | |
| 345 * These values are at the start of the next line, (due | |
| 346 * to the ++'s above),but they need to be at the start | |
| 347 * of the line after that. | |
| 348 */ | |
| 349 lum += cols; | |
| 350 lum2 += cols; | |
| 351 row1 += mod; | |
| 352 row2 += mod; | |
| 353 } | |
| 354 } | |
| 355 | |
| 356 /* | |
| 357 * In this function I make use of a nasty trick. The tables have the lower | |
| 358 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 359 * the horisontal doubling for free (almost). | |
| 360 */ | |
| 361 static void Color16DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 362 unsigned char *lum, unsigned char *cr, | |
| 363 unsigned char *cb, unsigned char *out, | |
| 364 int rows, int cols, int mod ) | |
| 365 { | |
| 366 unsigned int* row1 = (unsigned int*) out; | |
| 367 const int next_row = cols+(mod/2); | |
| 368 unsigned int* row2 = row1 + 2*next_row; | |
| 369 unsigned char* lum2; | |
| 370 int x, y; | |
| 371 int cr_r; | |
| 372 int crb_g; | |
| 373 int cb_b; | |
| 374 int cols_2 = cols / 2; | |
| 375 | |
| 376 lum2 = lum + cols; | |
| 377 | |
| 378 mod = (next_row * 3) + (mod/2); | |
| 379 | |
| 380 y = rows / 2; | |
| 381 while( y-- ) | |
| 382 { | |
| 383 x = cols_2; | |
| 384 while( x-- ) | |
| 385 { | |
| 386 register int L; | |
| 387 | |
| 388 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 389 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 390 + colortab[ *cb + 2*256 ]; | |
| 391 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 392 ++cr; ++cb; | |
| 393 | |
| 394 L = *lum++; | |
| 395 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 396 rgb_2_pix[ L + crb_g ] | | |
| 397 rgb_2_pix[ L + cb_b ]); | |
| 398 row1++; | |
| 399 | |
| 400 L = *lum++; | |
| 401 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 402 rgb_2_pix[ L + crb_g ] | | |
| 403 rgb_2_pix[ L + cb_b ]); | |
| 404 row1++; | |
| 405 | |
| 406 | |
| 407 /* Now, do second row. */ | |
| 408 | |
| 409 L = *lum2++; | |
| 410 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 411 rgb_2_pix[ L + crb_g ] | | |
| 412 rgb_2_pix[ L + cb_b ]); | |
| 413 row2++; | |
| 414 | |
| 415 L = *lum2++; | |
| 416 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 417 rgb_2_pix[ L + crb_g ] | | |
| 418 rgb_2_pix[ L + cb_b ]); | |
| 419 row2++; | |
| 420 } | |
| 421 | |
| 422 /* | |
| 423 * These values are at the start of the next line, (due | |
| 424 * to the ++'s above),but they need to be at the start | |
| 425 * of the line after that. | |
| 426 */ | |
| 427 lum += cols; | |
| 428 lum2 += cols; | |
| 429 row1 += mod; | |
| 430 row2 += mod; | |
| 431 } | |
| 432 } | |
| 433 | |
| 434 static void Color24DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 435 unsigned char *lum, unsigned char *cr, | |
| 436 unsigned char *cb, unsigned char *out, | |
| 437 int rows, int cols, int mod ) | |
| 438 { | |
| 439 unsigned int value; | |
| 440 unsigned char* row1 = out; | |
| 441 const int next_row = (cols*2 + mod) * 3; | |
| 442 unsigned char* row2 = row1 + 2*next_row; | |
| 443 unsigned char* lum2; | |
| 444 int x, y; | |
| 445 int cr_r; | |
| 446 int crb_g; | |
| 447 int cb_b; | |
| 448 int cols_2 = cols / 2; | |
| 449 | |
| 450 lum2 = lum + cols; | |
| 451 | |
| 452 mod = next_row*3 + mod*3; | |
| 453 | |
| 454 y = rows / 2; | |
| 455 while( y-- ) | |
| 456 { | |
| 457 x = cols_2; | |
| 458 while( x-- ) | |
| 459 { | |
| 460 register int L; | |
| 461 | |
| 462 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 463 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 464 + colortab[ *cb + 2*256 ]; | |
| 465 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 466 ++cr; ++cb; | |
| 467 | |
| 468 L = *lum++; | |
| 469 value = (rgb_2_pix[ L + cr_r ] | | |
| 470 rgb_2_pix[ L + crb_g ] | | |
| 471 rgb_2_pix[ L + cb_b ]); | |
| 472 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 473 (value ) & 0xFF; | |
| 474 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 475 (value >> 8) & 0xFF; | |
| 476 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 477 (value >> 16) & 0xFF; | |
| 478 row1 += 2*3; | |
| 479 | |
| 480 L = *lum++; | |
| 481 value = (rgb_2_pix[ L + cr_r ] | | |
| 482 rgb_2_pix[ L + crb_g ] | | |
| 483 rgb_2_pix[ L + cb_b ]); | |
| 484 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 485 (value ) & 0xFF; | |
| 486 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 487 (value >> 8) & 0xFF; | |
| 488 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 489 (value >> 16) & 0xFF; | |
| 490 row1 += 2*3; | |
| 491 | |
| 492 | |
| 493 /* Now, do second row. */ | |
| 494 | |
| 495 L = *lum2++; | |
| 496 value = (rgb_2_pix[ L + cr_r ] | | |
| 497 rgb_2_pix[ L + crb_g ] | | |
| 498 rgb_2_pix[ L + cb_b ]); | |
| 499 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 500 (value ) & 0xFF; | |
| 501 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 502 (value >> 8) & 0xFF; | |
| 503 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 504 (value >> 16) & 0xFF; | |
| 505 row2 += 2*3; | |
| 506 | |
| 507 L = *lum2++; | |
| 508 value = (rgb_2_pix[ L + cr_r ] | | |
| 509 rgb_2_pix[ L + crb_g ] | | |
| 510 rgb_2_pix[ L + cb_b ]); | |
| 511 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 512 (value ) & 0xFF; | |
| 513 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 514 (value >> 8) & 0xFF; | |
| 515 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 516 (value >> 16) & 0xFF; | |
| 517 row2 += 2*3; | |
| 518 } | |
| 519 | |
| 520 /* | |
| 521 * These values are at the start of the next line, (due | |
| 522 * to the ++'s above),but they need to be at the start | |
| 523 * of the line after that. | |
| 524 */ | |
| 525 lum += cols; | |
| 526 lum2 += cols; | |
| 527 row1 += mod; | |
| 528 row2 += mod; | |
| 529 } | |
| 530 } | |
| 531 | |
| 532 static void Color32DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 533 unsigned char *lum, unsigned char *cr, | |
| 534 unsigned char *cb, unsigned char *out, | |
| 535 int rows, int cols, int mod ) | |
| 536 { | |
| 537 unsigned int* row1 = (unsigned int*) out; | |
| 538 const int next_row = cols*2+mod; | |
| 539 unsigned int* row2 = row1 + 2*next_row; | |
| 540 unsigned char* lum2; | |
| 541 int x, y; | |
| 542 int cr_r; | |
| 543 int crb_g; | |
| 544 int cb_b; | |
| 545 int cols_2 = cols / 2; | |
| 546 | |
| 547 lum2 = lum + cols; | |
| 548 | |
| 549 mod = (next_row * 3) + mod; | |
| 550 | |
| 551 y = rows / 2; | |
| 552 while( y-- ) | |
| 553 { | |
| 554 x = cols_2; | |
| 555 while( x-- ) | |
| 556 { | |
| 557 register int L; | |
| 558 | |
| 559 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 560 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 561 + colortab[ *cb + 2*256 ]; | |
| 562 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 563 ++cr; ++cb; | |
| 564 | |
| 565 L = *lum++; | |
| 566 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = | |
| 567 (rgb_2_pix[ L + cr_r ] | | |
| 568 rgb_2_pix[ L + crb_g ] | | |
| 569 rgb_2_pix[ L + cb_b ]); | |
| 570 row1 += 2; | |
| 571 | |
| 572 L = *lum++; | |
| 573 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = | |
| 574 (rgb_2_pix[ L + cr_r ] | | |
| 575 rgb_2_pix[ L + crb_g ] | | |
| 576 rgb_2_pix[ L + cb_b ]); | |
| 577 row1 += 2; | |
| 578 | |
| 579 | |
| 580 /* Now, do second row. */ | |
| 581 | |
| 582 L = *lum2++; | |
| 583 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 584 (rgb_2_pix[ L + cr_r ] | | |
| 585 rgb_2_pix[ L + crb_g ] | | |
| 586 rgb_2_pix[ L + cb_b ]); | |
| 587 row2 += 2; | |
| 588 | |
| 589 L = *lum2++; | |
| 590 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 591 (rgb_2_pix[ L + cr_r ] | | |
| 592 rgb_2_pix[ L + crb_g ] | | |
| 593 rgb_2_pix[ L + cb_b ]); | |
| 594 row2 += 2; | |
| 595 } | |
| 596 | |
| 597 /* | |
| 598 * These values are at the start of the next line, (due | |
| 599 * to the ++'s above),but they need to be at the start | |
| 600 * of the line after that. | |
| 601 */ | |
| 602 lum += cols; | |
| 603 lum2 += cols; | |
| 604 row1 += mod; | |
| 605 row2 += mod; | |
| 606 } | |
| 607 } | |
| 608 | |
| 609 static void Color16DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 610 unsigned char *lum, unsigned char *cr, | |
| 611 unsigned char *cb, unsigned char *out, | |
| 612 int rows, int cols, int mod ) | |
| 613 { | |
| 614 unsigned short* row; | |
| 615 int x, y; | |
| 616 int cr_r; | |
| 617 int crb_g; | |
| 618 int cb_b; | |
| 619 int cols_2 = cols / 2; | |
| 620 | |
| 621 row = (unsigned short*) out; | |
| 622 | |
| 623 y = rows; | |
| 624 while( y-- ) | |
| 625 { | |
| 626 x = cols_2; | |
| 627 while( x-- ) | |
| 628 { | |
| 629 register int L; | |
| 630 | |
| 631 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 632 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 633 + colortab[ *cb + 2*256 ]; | |
| 634 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 635 cr += 4; cb += 4; | |
| 636 | |
| 637 L = *lum; lum += 2; | |
| 638 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 639 rgb_2_pix[ L + crb_g ] | | |
| 640 rgb_2_pix[ L + cb_b ]); | |
| 641 | |
| 642 L = *lum; lum += 2; | |
| 643 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 644 rgb_2_pix[ L + crb_g ] | | |
| 645 rgb_2_pix[ L + cb_b ]); | |
| 646 | |
| 647 } | |
| 648 | |
| 649 row += mod; | |
| 650 } | |
| 651 } | |
| 652 | |
| 653 static void Color24DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 654 unsigned char *lum, unsigned char *cr, | |
| 655 unsigned char *cb, unsigned char *out, | |
| 656 int rows, int cols, int mod ) | |
| 657 { | |
| 658 unsigned int value; | |
| 659 unsigned char* row; | |
| 660 int x, y; | |
| 661 int cr_r; | |
| 662 int crb_g; | |
| 663 int cb_b; | |
| 664 int cols_2 = cols / 2; | |
| 665 | |
| 666 row = (unsigned char*) out; | |
| 667 mod *= 3; | |
| 668 y = rows; | |
| 669 while( y-- ) | |
| 670 { | |
| 671 x = cols_2; | |
| 672 while( x-- ) | |
| 673 { | |
| 674 register int L; | |
| 675 | |
| 676 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 677 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 678 + colortab[ *cb + 2*256 ]; | |
| 679 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 680 cr += 4; cb += 4; | |
| 681 | |
| 682 L = *lum; lum += 2; | |
| 683 value = (rgb_2_pix[ L + cr_r ] | | |
| 684 rgb_2_pix[ L + crb_g ] | | |
| 685 rgb_2_pix[ L + cb_b ]); | |
| 686 *row++ = (value ) & 0xFF; | |
| 687 *row++ = (value >> 8) & 0xFF; | |
| 688 *row++ = (value >> 16) & 0xFF; | |
| 689 | |
| 690 L = *lum; lum += 2; | |
| 691 value = (rgb_2_pix[ L + cr_r ] | | |
| 692 rgb_2_pix[ L + crb_g ] | | |
| 693 rgb_2_pix[ L + cb_b ]); | |
| 694 *row++ = (value ) & 0xFF; | |
| 695 *row++ = (value >> 8) & 0xFF; | |
| 696 *row++ = (value >> 16) & 0xFF; | |
| 697 | |
| 698 } | |
| 699 row += mod; | |
| 700 } | |
| 701 } | |
| 702 | |
| 703 static void Color32DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 704 unsigned char *lum, unsigned char *cr, | |
| 705 unsigned char *cb, unsigned char *out, | |
| 706 int rows, int cols, int mod ) | |
| 707 { | |
| 708 unsigned int* row; | |
| 709 int x, y; | |
| 710 int cr_r; | |
| 711 int crb_g; | |
| 712 int cb_b; | |
| 713 int cols_2 = cols / 2; | |
| 714 | |
| 715 row = (unsigned int*) out; | |
| 716 y = rows; | |
| 717 while( y-- ) | |
| 718 { | |
| 719 x = cols_2; | |
| 720 while( x-- ) | |
| 721 { | |
| 722 register int L; | |
| 723 | |
| 724 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 725 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 726 + colortab[ *cb + 2*256 ]; | |
| 727 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 728 cr += 4; cb += 4; | |
| 729 | |
| 730 L = *lum; lum += 2; | |
| 731 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 732 rgb_2_pix[ L + crb_g ] | | |
| 733 rgb_2_pix[ L + cb_b ]); | |
| 734 | |
| 735 L = *lum; lum += 2; | |
| 736 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 737 rgb_2_pix[ L + crb_g ] | | |
| 738 rgb_2_pix[ L + cb_b ]); | |
| 739 | |
| 740 | |
| 741 } | |
| 742 row += mod; | |
| 743 } | |
| 744 } | |
| 745 | |
| 746 /* | |
| 747 * In this function I make use of a nasty trick. The tables have the lower | |
| 748 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 749 * the horisontal doubling for free (almost). | |
| 750 */ | |
| 751 static void Color16DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 752 unsigned char *lum, unsigned char *cr, | |
| 753 unsigned char *cb, unsigned char *out, | |
| 754 int rows, int cols, int mod ) | |
| 755 { | |
| 756 unsigned int* row = (unsigned int*) out; | |
| 757 const int next_row = cols+(mod/2); | |
| 758 int x, y; | |
| 759 int cr_r; | |
| 760 int crb_g; | |
| 761 int cb_b; | |
| 762 int cols_2 = cols / 2; | |
| 763 | |
| 764 y = rows; | |
| 765 while( y-- ) | |
| 766 { | |
| 767 x = cols_2; | |
| 768 while( x-- ) | |
| 769 { | |
| 770 register int L; | |
| 771 | |
| 772 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 773 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 774 + colortab[ *cb + 2*256 ]; | |
| 775 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 776 cr += 4; cb += 4; | |
| 777 | |
| 778 L = *lum; lum += 2; | |
| 779 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 780 rgb_2_pix[ L + crb_g ] | | |
| 781 rgb_2_pix[ L + cb_b ]); | |
| 782 row++; | |
| 783 | |
| 784 L = *lum; lum += 2; | |
| 785 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 786 rgb_2_pix[ L + crb_g ] | | |
| 787 rgb_2_pix[ L + cb_b ]); | |
| 788 row++; | |
| 789 | |
| 790 } | |
| 791 row += next_row; | |
| 792 } | |
| 793 } | |
| 794 | |
| 795 static void Color24DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 796 unsigned char *lum, unsigned char *cr, | |
| 797 unsigned char *cb, unsigned char *out, | |
| 798 int rows, int cols, int mod ) | |
| 799 { | |
| 800 unsigned int value; | |
| 801 unsigned char* row = out; | |
| 802 const int next_row = (cols*2 + mod) * 3; | |
| 803 int x, y; | |
| 804 int cr_r; | |
| 805 int crb_g; | |
| 806 int cb_b; | |
| 807 int cols_2 = cols / 2; | |
| 808 y = rows; | |
| 809 while( y-- ) | |
| 810 { | |
| 811 x = cols_2; | |
| 812 while( x-- ) | |
| 813 { | |
| 814 register int L; | |
| 815 | |
| 816 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 817 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 818 + colortab[ *cb + 2*256 ]; | |
| 819 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 820 cr += 4; cb += 4; | |
| 821 | |
| 822 L = *lum; lum += 2; | |
| 823 value = (rgb_2_pix[ L + cr_r ] | | |
| 824 rgb_2_pix[ L + crb_g ] | | |
| 825 rgb_2_pix[ L + cb_b ]); | |
| 826 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 827 (value ) & 0xFF; | |
| 828 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 829 (value >> 8) & 0xFF; | |
| 830 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 831 (value >> 16) & 0xFF; | |
| 832 row += 2*3; | |
| 833 | |
| 834 L = *lum; lum += 2; | |
| 835 value = (rgb_2_pix[ L + cr_r ] | | |
| 836 rgb_2_pix[ L + crb_g ] | | |
| 837 rgb_2_pix[ L + cb_b ]); | |
| 838 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 839 (value ) & 0xFF; | |
| 840 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 841 (value >> 8) & 0xFF; | |
| 842 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 843 (value >> 16) & 0xFF; | |
| 844 row += 2*3; | |
| 845 | |
| 846 } | |
| 847 row += next_row; | |
| 848 } | |
| 849 } | |
| 850 | |
| 851 static void Color32DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 852 unsigned char *lum, unsigned char *cr, | |
| 853 unsigned char *cb, unsigned char *out, | |
| 854 int rows, int cols, int mod ) | |
| 855 { | |
| 856 unsigned int* row = (unsigned int*) out; | |
| 857 const int next_row = cols*2+mod; | |
| 858 int x, y; | |
| 859 int cr_r; | |
| 860 int crb_g; | |
| 861 int cb_b; | |
| 862 int cols_2 = cols / 2; | |
| 863 mod+=mod; | |
| 864 y = rows; | |
| 865 while( y-- ) | |
| 866 { | |
| 867 x = cols_2; | |
| 868 while( x-- ) | |
| 869 { | |
| 870 register int L; | |
| 871 | |
| 872 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 873 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 874 + colortab[ *cb + 2*256 ]; | |
| 875 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 876 cr += 4; cb += 4; | |
| 877 | |
| 878 L = *lum; lum += 2; | |
| 879 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 880 (rgb_2_pix[ L + cr_r ] | | |
| 881 rgb_2_pix[ L + crb_g ] | | |
| 882 rgb_2_pix[ L + cb_b ]); | |
| 883 row += 2; | |
| 884 | |
| 885 L = *lum; lum += 2; | |
| 886 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 887 (rgb_2_pix[ L + cr_r ] | | |
| 888 rgb_2_pix[ L + crb_g ] | | |
| 889 rgb_2_pix[ L + cb_b ]); | |
| 890 row += 2; | |
| 891 | |
| 892 | |
| 893 } | |
| 894 | |
| 895 row += next_row; | |
| 896 } | |
| 897 } | |
| 898 | |
| 899 /* | |
| 900 * How many 1 bits are there in the Uint32. | |
| 901 * Low performance, do not call often. | |
| 902 */ | |
| 903 static int number_of_bits_set( Uint32 a ) | |
| 904 { | |
| 905 if(!a) return 0; | |
| 906 if(a & 1) return 1 + number_of_bits_set(a >> 1); | |
| 907 return(number_of_bits_set(a >> 1)); | |
| 908 } | |
| 909 | |
| 910 /* | |
| 911 * How many 0 bits are there at least significant end of Uint32. | |
| 912 * Low performance, do not call often. | |
| 913 */ | |
| 914 static int free_bits_at_bottom( Uint32 a ) | |
| 915 { | |
| 916 /* assume char is 8 bits */ | |
| 917 if(!a) return sizeof(Uint32) * 8; | |
| 918 if(((Sint32)a) & 1l) return 0; | |
| 919 return 1 + free_bits_at_bottom ( a >> 1); | |
| 920 } | |
| 921 | |
| 922 | |
| 923 SDL_Overlay *SDL_CreateYUV_SW(_THIS, int width, int height, Uint32 format, SDL_Surface *display) | |
| 924 { | |
| 925 SDL_Overlay *overlay; | |
| 926 struct private_yuvhwdata *swdata; | |
| 927 int *Cr_r_tab; | |
| 928 int *Cr_g_tab; | |
| 929 int *Cb_g_tab; | |
| 930 int *Cb_b_tab; | |
| 931 Uint32 *r_2_pix_alloc; | |
| 932 Uint32 *g_2_pix_alloc; | |
| 933 Uint32 *b_2_pix_alloc; | |
|
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changeset
|
934 int i; |
| 0 | 935 int CR, CB; |
| 936 Uint32 Rmask, Gmask, Bmask; | |
| 937 | |
| 938 /* Only RGB packed pixel conversion supported */ | |
| 939 if ( (display->format->BytesPerPixel != 2) && | |
| 940 (display->format->BytesPerPixel != 3) && | |
| 941 (display->format->BytesPerPixel != 4) ) { | |
| 942 SDL_SetError("Can't use YUV data on non 16/24/32 bit surfaces"); | |
| 943 return(NULL); | |
| 944 } | |
| 945 | |
| 946 /* Verify that we support the format */ | |
| 947 switch (format) { | |
| 948 case SDL_YV12_OVERLAY: | |
| 949 case SDL_IYUV_OVERLAY: | |
| 950 case SDL_YUY2_OVERLAY: | |
| 951 case SDL_UYVY_OVERLAY: | |
| 952 case SDL_YVYU_OVERLAY: | |
| 953 break; | |
| 954 default: | |
| 955 SDL_SetError("Unsupported YUV format"); | |
| 956 return(NULL); | |
| 957 } | |
| 958 | |
| 959 /* Create the overlay structure */ | |
|
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|
960 overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay); |
| 0 | 961 if ( overlay == NULL ) { |
| 962 SDL_OutOfMemory(); | |
| 963 return(NULL); | |
| 964 } | |
|
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|
965 SDL_memset(overlay, 0, (sizeof *overlay)); |
| 0 | 966 |
| 967 /* Fill in the basic members */ | |
| 968 overlay->format = format; | |
| 969 overlay->w = width; | |
| 970 overlay->h = height; | |
| 971 | |
| 972 /* Set up the YUV surface function structure */ | |
| 973 overlay->hwfuncs = &sw_yuvfuncs; | |
| 974 | |
| 975 /* Create the pixel data and lookup tables */ | |
|
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changeset
|
976 swdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *swdata); |
| 0 | 977 overlay->hwdata = swdata; |
| 978 if ( swdata == NULL ) { | |
| 979 SDL_OutOfMemory(); | |
| 980 SDL_FreeYUVOverlay(overlay); | |
| 981 return(NULL); | |
| 982 } | |
| 983 swdata->stretch = NULL; | |
| 984 swdata->display = display; | |
|
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changeset
|
985 swdata->pixels = (Uint8 *) SDL_malloc(width*height*2); |
|
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|
986 swdata->colortab = (int *)SDL_malloc(4*256*sizeof(int)); |
| 0 | 987 Cr_r_tab = &swdata->colortab[0*256]; |
| 988 Cr_g_tab = &swdata->colortab[1*256]; | |
| 989 Cb_g_tab = &swdata->colortab[2*256]; | |
| 990 Cb_b_tab = &swdata->colortab[3*256]; | |
|
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|
991 swdata->rgb_2_pix = (Uint32 *)SDL_malloc(3*768*sizeof(Uint32)); |
| 0 | 992 r_2_pix_alloc = &swdata->rgb_2_pix[0*768]; |
| 993 g_2_pix_alloc = &swdata->rgb_2_pix[1*768]; | |
| 994 b_2_pix_alloc = &swdata->rgb_2_pix[2*768]; | |
| 995 if ( ! swdata->pixels || ! swdata->colortab || ! swdata->rgb_2_pix ) { | |
| 996 SDL_OutOfMemory(); | |
| 997 SDL_FreeYUVOverlay(overlay); | |
| 998 return(NULL); | |
| 999 } | |
| 1000 | |
| 1001 /* Generate the tables for the display surface */ | |
| 1002 for (i=0; i<256; i++) { | |
| 1003 /* Gamma correction (luminescence table) and chroma correction | |
| 1004 would be done here. See the Berkeley mpeg_play sources. | |
| 1005 */ | |
| 1006 CB = CR = (i-128); | |
| 1007 Cr_r_tab[i] = (int) ( (0.419/0.299) * CR); | |
| 1008 Cr_g_tab[i] = (int) (-(0.299/0.419) * CR); | |
| 1009 Cb_g_tab[i] = (int) (-(0.114/0.331) * CB); | |
| 1010 Cb_b_tab[i] = (int) ( (0.587/0.331) * CB); | |
| 1011 } | |
| 1012 | |
| 1013 /* | |
| 1014 * Set up entries 0-255 in rgb-to-pixel value tables. | |
| 1015 */ | |
| 1016 Rmask = display->format->Rmask; | |
| 1017 Gmask = display->format->Gmask; | |
| 1018 Bmask = display->format->Bmask; | |
| 1019 for ( i=0; i<256; ++i ) { | |
| 1020 r_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Rmask)); | |
| 1021 r_2_pix_alloc[i+256] <<= free_bits_at_bottom(Rmask); | |
| 1022 g_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Gmask)); | |
| 1023 g_2_pix_alloc[i+256] <<= free_bits_at_bottom(Gmask); | |
| 1024 b_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Bmask)); | |
| 1025 b_2_pix_alloc[i+256] <<= free_bits_at_bottom(Bmask); | |
| 1026 } | |
| 1027 | |
| 1028 /* | |
| 1029 * If we have 16-bit output depth, then we double the value | |
| 1030 * in the top word. This means that we can write out both | |
| 1031 * pixels in the pixel doubling mode with one op. It is | |
| 1032 * harmless in the normal case as storing a 32-bit value | |
| 1033 * through a short pointer will lose the top bits anyway. | |
| 1034 */ | |
| 1035 if( display->format->BytesPerPixel == 2 ) { | |
| 1036 for ( i=0; i<256; ++i ) { | |
| 1037 r_2_pix_alloc[i+256] |= (r_2_pix_alloc[i+256]) << 16; | |
| 1038 g_2_pix_alloc[i+256] |= (g_2_pix_alloc[i+256]) << 16; | |
| 1039 b_2_pix_alloc[i+256] |= (b_2_pix_alloc[i+256]) << 16; | |
| 1040 } | |
| 1041 } | |
| 1042 | |
| 1043 /* | |
| 1044 * Spread out the values we have to the rest of the array so that | |
| 1045 * we do not need to check for overflow. | |
| 1046 */ | |
| 1047 for ( i=0; i<256; ++i ) { | |
| 1048 r_2_pix_alloc[i] = r_2_pix_alloc[256]; | |
| 1049 r_2_pix_alloc[i+512] = r_2_pix_alloc[511]; | |
| 1050 g_2_pix_alloc[i] = g_2_pix_alloc[256]; | |
| 1051 g_2_pix_alloc[i+512] = g_2_pix_alloc[511]; | |
| 1052 b_2_pix_alloc[i] = b_2_pix_alloc[256]; | |
| 1053 b_2_pix_alloc[i+512] = b_2_pix_alloc[511]; | |
| 1054 } | |
| 1055 | |
| 1056 /* You have chosen wisely... */ | |
| 1057 switch (format) { | |
| 1058 case SDL_YV12_OVERLAY: | |
| 1059 case SDL_IYUV_OVERLAY: | |
| 1060 if ( display->format->BytesPerPixel == 2 ) { | |
|
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New configure-based build system. Still work in progress, but much improved
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1061 #if i386 && __GNUC__ && SDL_ASSEMBLY_BLITTERS |
| 0 | 1062 /* inline assembly functions */ |
|
739
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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|
1063 if ( SDL_HasMMX() && (Rmask == 0xF800) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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|
1064 (Gmask == 0x07E0) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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|
1065 (Bmask == 0x001F) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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|
1066 (width & 15) == 0) { |
| 0 | 1067 /*printf("Using MMX 16-bit 565 dither\n");*/ |
| 1068 swdata->Display1X = Color565DitherYV12MMX1X; | |
| 1069 } else { | |
| 1070 /*printf("Using C 16-bit dither\n");*/ | |
| 1071 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1072 } | |
| 1073 #else | |
| 1074 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1075 #endif | |
| 1076 swdata->Display2X = Color16DitherYV12Mod2X; | |
| 1077 } | |
| 1078 if ( display->format->BytesPerPixel == 3 ) { | |
| 1079 swdata->Display1X = Color24DitherYV12Mod1X; | |
| 1080 swdata->Display2X = Color24DitherYV12Mod2X; | |
| 1081 } | |
| 1082 if ( display->format->BytesPerPixel == 4 ) { | |
|
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1083 #if i386 && __GNUC__ && SDL_ASSEMBLY_BLITTERS |
| 0 | 1084 /* inline assembly functions */ |
|
739
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
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|
1085 if ( SDL_HasMMX() && (Rmask == 0x00FF0000) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
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366
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changeset
|
1086 (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
|
1087 (Bmask == 0x000000FF) && |
|
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
366
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changeset
|
1088 (width & 15) == 0) { |
| 0 | 1089 /*printf("Using MMX 32-bit dither\n");*/ |
| 1090 swdata->Display1X = ColorRGBDitherYV12MMX1X; | |
| 1091 } else { | |
| 1092 /*printf("Using C 32-bit dither\n");*/ | |
| 1093 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1094 } | |
| 1095 #else | |
| 1096 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1097 #endif | |
| 1098 swdata->Display2X = Color32DitherYV12Mod2X; | |
| 1099 } | |
| 1100 break; | |
| 1101 case SDL_YUY2_OVERLAY: | |
| 1102 case SDL_UYVY_OVERLAY: | |
| 1103 case SDL_YVYU_OVERLAY: | |
| 1104 if ( display->format->BytesPerPixel == 2 ) { | |
| 1105 swdata->Display1X = Color16DitherYUY2Mod1X; | |
| 1106 swdata->Display2X = Color16DitherYUY2Mod2X; | |
| 1107 } | |
| 1108 if ( display->format->BytesPerPixel == 3 ) { | |
| 1109 swdata->Display1X = Color24DitherYUY2Mod1X; | |
| 1110 swdata->Display2X = Color24DitherYUY2Mod2X; | |
| 1111 } | |
| 1112 if ( display->format->BytesPerPixel == 4 ) { | |
| 1113 swdata->Display1X = Color32DitherYUY2Mod1X; | |
| 1114 swdata->Display2X = Color32DitherYUY2Mod2X; | |
| 1115 } | |
| 1116 break; | |
| 1117 default: | |
| 1118 /* We should never get here (caught above) */ | |
| 1119 break; | |
| 1120 } | |
| 1121 | |
| 1122 /* Find the pitch and offset values for the overlay */ | |
| 1123 overlay->pitches = swdata->pitches; | |
| 1124 overlay->pixels = swdata->planes; | |
| 1125 switch (format) { | |
| 1126 case SDL_YV12_OVERLAY: | |
| 1127 case SDL_IYUV_OVERLAY: | |
| 1128 overlay->pitches[0] = overlay->w; | |
| 1129 overlay->pitches[1] = overlay->pitches[0] / 2; | |
| 1130 overlay->pitches[2] = overlay->pitches[0] / 2; | |
| 1131 overlay->pixels[0] = swdata->pixels; | |
| 1132 overlay->pixels[1] = overlay->pixels[0] + | |
| 1133 overlay->pitches[0] * overlay->h; | |
| 1134 overlay->pixels[2] = overlay->pixels[1] + | |
| 1135 overlay->pitches[1] * overlay->h / 2; | |
| 1136 overlay->planes = 3; | |
| 1137 break; | |
| 1138 case SDL_YUY2_OVERLAY: | |
| 1139 case SDL_UYVY_OVERLAY: | |
| 1140 case SDL_YVYU_OVERLAY: | |
| 1141 overlay->pitches[0] = overlay->w*2; | |
| 1142 overlay->pixels[0] = swdata->pixels; | |
| 1143 overlay->planes = 1; | |
| 1144 break; | |
| 1145 default: | |
| 1146 /* We should never get here (caught above) */ | |
| 1147 break; | |
| 1148 } | |
| 1149 | |
| 1150 /* We're all done.. */ | |
| 1151 return(overlay); | |
| 1152 } | |
| 1153 | |
| 1154 int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1155 { | |
| 1156 return(0); | |
| 1157 } | |
| 1158 | |
| 1159 void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1160 { | |
| 1161 return; | |
| 1162 } | |
| 1163 | |
| 1164 int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 1165 { | |
| 1166 struct private_yuvhwdata *swdata; | |
| 1167 SDL_Surface *stretch; | |
| 1168 SDL_Surface *display; | |
| 1169 int scale_2x; | |
| 1170 Uint8 *lum, *Cr, *Cb; | |
| 1171 Uint8 *dst; | |
| 1172 int mod; | |
| 1173 | |
| 1174 swdata = overlay->hwdata; | |
| 1175 scale_2x = 0; | |
| 1176 stretch = 0; | |
| 1177 if ( (overlay->w != dstrect->w) || (overlay->h != dstrect->h) ) { | |
| 1178 if ( (dstrect->w == 2*overlay->w) && | |
| 1179 (dstrect->h == 2*overlay->h) ) { | |
| 1180 scale_2x = 1; | |
| 1181 } else { | |
| 1182 if ( ! swdata->stretch ) { | |
| 1183 display = swdata->display; | |
| 1184 swdata->stretch = SDL_CreateRGBSurface( | |
| 1185 SDL_SWSURFACE, | |
| 1186 overlay->w, overlay->h, | |
| 1187 display->format->BitsPerPixel, | |
| 1188 display->format->Rmask, | |
| 1189 display->format->Gmask, | |
| 1190 display->format->Bmask, 0); | |
| 1191 if ( ! swdata->stretch ) { | |
| 1192 return(-1); | |
| 1193 } | |
| 1194 } | |
| 1195 stretch = swdata->stretch; | |
| 1196 } | |
| 1197 } | |
| 1198 | |
| 1199 if ( stretch ) { | |
| 1200 display = stretch; | |
| 1201 } else { | |
| 1202 display = swdata->display; | |
| 1203 } | |
| 1204 switch (overlay->format) { | |
| 1205 case SDL_YV12_OVERLAY: | |
| 1206 lum = overlay->pixels[0]; | |
| 1207 Cr = overlay->pixels[1]; | |
| 1208 Cb = overlay->pixels[2]; | |
| 1209 break; | |
| 1210 case SDL_IYUV_OVERLAY: | |
| 1211 lum = overlay->pixels[0]; | |
| 1212 Cr = overlay->pixels[2]; | |
| 1213 Cb = overlay->pixels[1]; | |
| 1214 break; | |
| 1215 case SDL_YUY2_OVERLAY: | |
| 1216 lum = overlay->pixels[0]; | |
| 1217 Cr = lum + 3; | |
| 1218 Cb = lum + 1; | |
| 1219 break; | |
| 1220 case SDL_UYVY_OVERLAY: | |
| 1221 lum = overlay->pixels[0]+1; | |
| 1222 Cr = lum + 1; | |
| 1223 Cb = lum - 1; | |
| 1224 break; | |
| 1225 case SDL_YVYU_OVERLAY: | |
| 1226 lum = overlay->pixels[0]; | |
| 1227 Cr = lum + 1; | |
| 1228 Cb = lum + 3; | |
| 1229 break; | |
| 1230 default: | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
1231 SDL_SetError("Unsupported YUV format in blit"); |
| 0 | 1232 return(-1); |
| 1233 } | |
| 1234 if ( SDL_MUSTLOCK(display) ) { | |
| 1235 if ( SDL_LockSurface(display) < 0 ) { | |
| 1236 return(-1); | |
| 1237 } | |
| 1238 } | |
| 1239 if ( stretch ) { | |
| 1240 dst = (Uint8 *)stretch->pixels; | |
| 1241 } else { | |
| 1242 dst = (Uint8 *)display->pixels | |
| 1243 + dstrect->x * display->format->BytesPerPixel | |
| 1244 + dstrect->y * display->pitch; | |
| 1245 } | |
| 1246 mod = (display->pitch / display->format->BytesPerPixel); | |
| 1247 | |
| 1248 if ( scale_2x ) { | |
| 1249 mod -= (overlay->w * 2); | |
| 1250 swdata->Display2X(swdata->colortab, swdata->rgb_2_pix, | |
| 1251 lum, Cr, Cb, dst, overlay->h, overlay->w,mod); | |
| 1252 } else { | |
| 1253 mod -= overlay->w; | |
| 1254 swdata->Display1X(swdata->colortab, swdata->rgb_2_pix, | |
| 1255 lum, Cr, Cb, dst, overlay->h, overlay->w,mod); | |
| 1256 } | |
| 1257 if ( SDL_MUSTLOCK(display) ) { | |
| 1258 SDL_UnlockSurface(display); | |
| 1259 } | |
| 1260 if ( stretch ) { | |
| 1261 display = swdata->display; | |
| 1262 SDL_SoftStretch(stretch, NULL, display, dstrect); | |
| 1263 } | |
| 1264 SDL_UpdateRects(display, 1, dstrect); | |
| 1265 | |
| 1266 return(0); | |
| 1267 } | |
| 1268 | |
| 1269 void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1270 { | |
| 1271 struct private_yuvhwdata *swdata; | |
| 1272 | |
| 1273 swdata = overlay->hwdata; | |
| 1274 if ( swdata ) { | |
|
9
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1275 if ( swdata->stretch ) { |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1276 SDL_FreeSurface(swdata->stretch); |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1277 } |
| 0 | 1278 if ( swdata->pixels ) { |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1279 SDL_free(swdata->pixels); |
| 0 | 1280 } |
| 1281 if ( swdata->colortab ) { | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1282 SDL_free(swdata->colortab); |
| 0 | 1283 } |
| 1284 if ( swdata->rgb_2_pix ) { | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1285 SDL_free(swdata->rgb_2_pix); |
| 0 | 1286 } |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1287 SDL_free(swdata); |
| 0 | 1288 } |
| 1289 } |