Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv_sw.c @ 4266:62849663f20a SDL-1.2
Removed duplicate memset() calls.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 29 Sep 2009 13:40:34 +0000 |
| parents | a1b03ba2fcd0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
|
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15 You should have received a copy of the GNU Lesser General Public |
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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 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* This is the software implementation of the YUV video overlay support */ | |
| 25 | |
| 26 /* This code was derived from code carrying the following copyright notices: | |
| 27 | |
| 28 * Copyright (c) 1995 The Regents of the University of California. | |
| 29 * All rights reserved. | |
| 30 * | |
| 31 * Permission to use, copy, modify, and distribute this software and its | |
| 32 * documentation for any purpose, without fee, and without written agreement is | |
| 33 * hereby granted, provided that the above copyright notice and the following | |
| 34 * two paragraphs appear in all copies of this software. | |
| 35 * | |
| 36 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR | |
| 37 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT | |
| 38 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF | |
| 39 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 40 * | |
| 41 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, | |
| 42 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | |
| 43 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | |
| 44 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO | |
| 45 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 46 | |
| 47 * Copyright (c) 1995 Erik Corry | |
| 48 * All rights reserved. | |
| 49 * | |
| 50 * Permission to use, copy, modify, and distribute this software and its | |
| 51 * documentation for any purpose, without fee, and without written agreement is | |
| 52 * hereby granted, provided that the above copyright notice and the following | |
| 53 * two paragraphs appear in all copies of this software. | |
| 54 * | |
| 55 * IN NO EVENT SHALL ERIK CORRY BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, | |
| 56 * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF | |
| 57 * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF ERIK CORRY HAS BEEN ADVISED | |
| 58 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 59 * | |
| 60 * ERIK CORRY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT | |
| 61 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
| 62 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" | |
| 63 * BASIS, AND ERIK CORRY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, | |
| 64 * UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 65 | |
| 66 * Portions of this software Copyright (c) 1995 Brown University. | |
| 67 * All rights reserved. | |
| 68 * | |
| 69 * Permission to use, copy, modify, and distribute this software and its | |
| 70 * documentation for any purpose, without fee, and without written agreement | |
| 71 * is hereby granted, provided that the above copyright notice and the | |
| 72 * following two paragraphs appear in all copies of this software. | |
| 73 * | |
| 74 * IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR | |
| 75 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT | |
| 76 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN | |
| 77 * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 78 * | |
| 79 * BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT | |
| 80 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
| 81 * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" | |
| 82 * BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, | |
| 83 * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 84 */ | |
| 85 | |
| 86 #include "SDL_video.h" | |
|
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87 #include "SDL_cpuinfo.h" |
| 0 | 88 #include "SDL_stretch_c.h" |
| 89 #include "SDL_yuvfuncs.h" | |
| 90 #include "SDL_yuv_sw_c.h" | |
| 91 | |
| 92 /* The functions used to manipulate software video overlays */ | |
| 93 static struct private_yuvhwfuncs sw_yuvfuncs = { | |
| 94 SDL_LockYUV_SW, | |
| 95 SDL_UnlockYUV_SW, | |
| 96 SDL_DisplayYUV_SW, | |
| 97 SDL_FreeYUV_SW | |
| 98 }; | |
| 99 | |
| 100 /* RGB conversion lookup tables */ | |
| 101 struct private_yuvhwdata { | |
| 102 SDL_Surface *stretch; | |
| 103 SDL_Surface *display; | |
| 104 Uint8 *pixels; | |
| 105 int *colortab; | |
| 106 Uint32 *rgb_2_pix; | |
| 107 void (*Display1X)(int *colortab, Uint32 *rgb_2_pix, | |
| 108 unsigned char *lum, unsigned char *cr, | |
| 109 unsigned char *cb, unsigned char *out, | |
| 110 int rows, int cols, int mod ); | |
| 111 void (*Display2X)(int *colortab, Uint32 *rgb_2_pix, | |
| 112 unsigned char *lum, unsigned char *cr, | |
| 113 unsigned char *cb, unsigned char *out, | |
| 114 int rows, int cols, int mod ); | |
| 115 | |
| 116 /* These are just so we don't have to allocate them separately */ | |
| 117 Uint16 pitches[3]; | |
| 118 Uint8 *planes[3]; | |
| 119 }; | |
| 120 | |
| 121 | |
| 122 /* The colorspace conversion functions */ | |
| 123 | |
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124 #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES |
| 0 | 125 extern void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, |
| 126 unsigned char *lum, unsigned char *cr, | |
| 127 unsigned char *cb, unsigned char *out, | |
| 128 int rows, int cols, int mod ); | |
| 129 extern void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix, | |
| 130 unsigned char *lum, unsigned char *cr, | |
| 131 unsigned char *cb, unsigned char *out, | |
| 132 int rows, int cols, int mod ); | |
| 1413 | 133 #endif |
| 0 | 134 |
| 135 static void Color16DitherYV12Mod1X( 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 unsigned short* row1; | |
| 141 unsigned short* row2; | |
| 142 unsigned char* lum2; | |
| 143 int x, y; | |
| 144 int cr_r; | |
| 145 int crb_g; | |
| 146 int cb_b; | |
| 147 int cols_2 = cols / 2; | |
| 148 | |
| 149 row1 = (unsigned short*) out; | |
| 150 row2 = row1 + cols + mod; | |
| 151 lum2 = lum + cols; | |
| 152 | |
| 153 mod += cols + mod; | |
| 154 | |
| 155 y = rows / 2; | |
| 156 while( y-- ) | |
| 157 { | |
| 158 x = cols_2; | |
| 159 while( x-- ) | |
| 160 { | |
| 161 register int L; | |
| 162 | |
| 163 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 164 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 165 + colortab[ *cb + 2*256 ]; | |
| 166 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 167 ++cr; ++cb; | |
| 168 | |
| 169 L = *lum++; | |
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170 *row1++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | |
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171 rgb_2_pix[ L + crb_g ] | |
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172 rgb_2_pix[ L + cb_b ]); |
| 0 | 173 |
| 174 L = *lum++; | |
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175 *row1++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | |
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176 rgb_2_pix[ L + crb_g ] | |
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177 rgb_2_pix[ L + cb_b ]); |
| 0 | 178 |
| 179 | |
| 180 /* Now, do second row. */ | |
| 181 | |
| 182 L = *lum2++; | |
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183 *row2++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | |
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184 rgb_2_pix[ L + crb_g ] | |
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185 rgb_2_pix[ L + cb_b ]); |
| 0 | 186 |
| 187 L = *lum2++; | |
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188 *row2++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | |
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189 rgb_2_pix[ L + crb_g ] | |
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190 rgb_2_pix[ L + cb_b ]); |
| 0 | 191 } |
| 192 | |
| 193 /* | |
| 194 * These values are at the start of the next line, (due | |
| 195 * to the ++'s above),but they need to be at the start | |
| 196 * of the line after that. | |
| 197 */ | |
| 198 lum += cols; | |
| 199 lum2 += cols; | |
| 200 row1 += mod; | |
| 201 row2 += mod; | |
| 202 } | |
| 203 } | |
| 204 | |
| 205 static void Color24DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 206 unsigned char *lum, unsigned char *cr, | |
| 207 unsigned char *cb, unsigned char *out, | |
| 208 int rows, int cols, int mod ) | |
| 209 { | |
| 210 unsigned int value; | |
| 211 unsigned char* row1; | |
| 212 unsigned char* row2; | |
| 213 unsigned char* lum2; | |
| 214 int x, y; | |
| 215 int cr_r; | |
| 216 int crb_g; | |
| 217 int cb_b; | |
| 218 int cols_2 = cols / 2; | |
| 219 | |
| 220 row1 = out; | |
| 221 row2 = row1 + cols*3 + mod*3; | |
| 222 lum2 = lum + cols; | |
| 223 | |
| 224 mod += cols + mod; | |
| 225 mod *= 3; | |
| 226 | |
| 227 y = rows / 2; | |
| 228 while( y-- ) | |
| 229 { | |
| 230 x = cols_2; | |
| 231 while( x-- ) | |
| 232 { | |
| 233 register int L; | |
| 234 | |
| 235 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 236 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 237 + colortab[ *cb + 2*256 ]; | |
| 238 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 239 ++cr; ++cb; | |
| 240 | |
| 241 L = *lum++; | |
| 242 value = (rgb_2_pix[ L + cr_r ] | | |
| 243 rgb_2_pix[ L + crb_g ] | | |
| 244 rgb_2_pix[ L + cb_b ]); | |
| 245 *row1++ = (value ) & 0xFF; | |
| 246 *row1++ = (value >> 8) & 0xFF; | |
| 247 *row1++ = (value >> 16) & 0xFF; | |
| 248 | |
| 249 L = *lum++; | |
| 250 value = (rgb_2_pix[ L + cr_r ] | | |
| 251 rgb_2_pix[ L + crb_g ] | | |
| 252 rgb_2_pix[ L + cb_b ]); | |
| 253 *row1++ = (value ) & 0xFF; | |
| 254 *row1++ = (value >> 8) & 0xFF; | |
| 255 *row1++ = (value >> 16) & 0xFF; | |
| 256 | |
| 257 | |
| 258 /* Now, do second row. */ | |
| 259 | |
| 260 L = *lum2++; | |
| 261 value = (rgb_2_pix[ L + cr_r ] | | |
| 262 rgb_2_pix[ L + crb_g ] | | |
| 263 rgb_2_pix[ L + cb_b ]); | |
| 264 *row2++ = (value ) & 0xFF; | |
| 265 *row2++ = (value >> 8) & 0xFF; | |
| 266 *row2++ = (value >> 16) & 0xFF; | |
| 267 | |
| 268 L = *lum2++; | |
| 269 value = (rgb_2_pix[ L + cr_r ] | | |
| 270 rgb_2_pix[ L + crb_g ] | | |
| 271 rgb_2_pix[ L + cb_b ]); | |
| 272 *row2++ = (value ) & 0xFF; | |
| 273 *row2++ = (value >> 8) & 0xFF; | |
| 274 *row2++ = (value >> 16) & 0xFF; | |
| 275 } | |
| 276 | |
| 277 /* | |
| 278 * These values are at the start of the next line, (due | |
| 279 * to the ++'s above),but they need to be at the start | |
| 280 * of the line after that. | |
| 281 */ | |
| 282 lum += cols; | |
| 283 lum2 += cols; | |
| 284 row1 += mod; | |
| 285 row2 += mod; | |
| 286 } | |
| 287 } | |
| 288 | |
| 289 static void Color32DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 290 unsigned char *lum, unsigned char *cr, | |
| 291 unsigned char *cb, unsigned char *out, | |
| 292 int rows, int cols, int mod ) | |
| 293 { | |
| 294 unsigned int* row1; | |
| 295 unsigned int* row2; | |
| 296 unsigned char* lum2; | |
| 297 int x, y; | |
| 298 int cr_r; | |
| 299 int crb_g; | |
| 300 int cb_b; | |
| 301 int cols_2 = cols / 2; | |
| 302 | |
| 303 row1 = (unsigned int*) out; | |
| 304 row2 = row1 + cols + mod; | |
| 305 lum2 = lum + cols; | |
| 306 | |
| 307 mod += cols + mod; | |
| 308 | |
| 309 y = rows / 2; | |
| 310 while( y-- ) | |
| 311 { | |
| 312 x = cols_2; | |
| 313 while( x-- ) | |
| 314 { | |
| 315 register int L; | |
| 316 | |
| 317 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 318 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 319 + colortab[ *cb + 2*256 ]; | |
| 320 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 321 ++cr; ++cb; | |
| 322 | |
| 323 L = *lum++; | |
| 324 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 325 rgb_2_pix[ L + crb_g ] | | |
| 326 rgb_2_pix[ L + cb_b ]); | |
| 327 | |
| 328 L = *lum++; | |
| 329 *row1++ = (rgb_2_pix[ L + cr_r ] | | |
| 330 rgb_2_pix[ L + crb_g ] | | |
| 331 rgb_2_pix[ L + cb_b ]); | |
| 332 | |
| 333 | |
| 334 /* Now, do second row. */ | |
| 335 | |
| 336 L = *lum2++; | |
| 337 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 338 rgb_2_pix[ L + crb_g ] | | |
| 339 rgb_2_pix[ L + cb_b ]); | |
| 340 | |
| 341 L = *lum2++; | |
| 342 *row2++ = (rgb_2_pix[ L + cr_r ] | | |
| 343 rgb_2_pix[ L + crb_g ] | | |
| 344 rgb_2_pix[ L + cb_b ]); | |
| 345 } | |
| 346 | |
| 347 /* | |
| 348 * These values are at the start of the next line, (due | |
| 349 * to the ++'s above),but they need to be at the start | |
| 350 * of the line after that. | |
| 351 */ | |
| 352 lum += cols; | |
| 353 lum2 += cols; | |
| 354 row1 += mod; | |
| 355 row2 += mod; | |
| 356 } | |
| 357 } | |
| 358 | |
| 359 /* | |
| 360 * In this function I make use of a nasty trick. The tables have the lower | |
| 361 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 362 * the horisontal doubling for free (almost). | |
| 363 */ | |
| 364 static void Color16DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 365 unsigned char *lum, unsigned char *cr, | |
| 366 unsigned char *cb, unsigned char *out, | |
| 367 int rows, int cols, int mod ) | |
| 368 { | |
| 369 unsigned int* row1 = (unsigned int*) out; | |
| 370 const int next_row = cols+(mod/2); | |
| 371 unsigned int* row2 = row1 + 2*next_row; | |
| 372 unsigned char* lum2; | |
| 373 int x, y; | |
| 374 int cr_r; | |
| 375 int crb_g; | |
| 376 int cb_b; | |
| 377 int cols_2 = cols / 2; | |
| 378 | |
| 379 lum2 = lum + cols; | |
| 380 | |
| 381 mod = (next_row * 3) + (mod/2); | |
| 382 | |
| 383 y = rows / 2; | |
| 384 while( y-- ) | |
| 385 { | |
| 386 x = cols_2; | |
| 387 while( x-- ) | |
| 388 { | |
| 389 register int L; | |
| 390 | |
| 391 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 392 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 393 + colortab[ *cb + 2*256 ]; | |
| 394 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 395 ++cr; ++cb; | |
| 396 | |
| 397 L = *lum++; | |
| 398 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 399 rgb_2_pix[ L + crb_g ] | | |
| 400 rgb_2_pix[ L + cb_b ]); | |
| 401 row1++; | |
| 402 | |
| 403 L = *lum++; | |
| 404 row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 405 rgb_2_pix[ L + crb_g ] | | |
| 406 rgb_2_pix[ L + cb_b ]); | |
| 407 row1++; | |
| 408 | |
| 409 | |
| 410 /* Now, do second row. */ | |
| 411 | |
| 412 L = *lum2++; | |
| 413 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 414 rgb_2_pix[ L + crb_g ] | | |
| 415 rgb_2_pix[ L + cb_b ]); | |
| 416 row2++; | |
| 417 | |
| 418 L = *lum2++; | |
| 419 row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 420 rgb_2_pix[ L + crb_g ] | | |
| 421 rgb_2_pix[ L + cb_b ]); | |
| 422 row2++; | |
| 423 } | |
| 424 | |
| 425 /* | |
| 426 * These values are at the start of the next line, (due | |
| 427 * to the ++'s above),but they need to be at the start | |
| 428 * of the line after that. | |
| 429 */ | |
| 430 lum += cols; | |
| 431 lum2 += cols; | |
| 432 row1 += mod; | |
| 433 row2 += mod; | |
| 434 } | |
| 435 } | |
| 436 | |
| 437 static void Color24DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 438 unsigned char *lum, unsigned char *cr, | |
| 439 unsigned char *cb, unsigned char *out, | |
| 440 int rows, int cols, int mod ) | |
| 441 { | |
| 442 unsigned int value; | |
| 443 unsigned char* row1 = out; | |
| 444 const int next_row = (cols*2 + mod) * 3; | |
| 445 unsigned char* row2 = row1 + 2*next_row; | |
| 446 unsigned char* lum2; | |
| 447 int x, y; | |
| 448 int cr_r; | |
| 449 int crb_g; | |
| 450 int cb_b; | |
| 451 int cols_2 = cols / 2; | |
| 452 | |
| 453 lum2 = lum + cols; | |
| 454 | |
| 455 mod = next_row*3 + mod*3; | |
| 456 | |
| 457 y = rows / 2; | |
| 458 while( y-- ) | |
| 459 { | |
| 460 x = cols_2; | |
| 461 while( x-- ) | |
| 462 { | |
| 463 register int L; | |
| 464 | |
| 465 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 466 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 467 + colortab[ *cb + 2*256 ]; | |
| 468 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 469 ++cr; ++cb; | |
| 470 | |
| 471 L = *lum++; | |
| 472 value = (rgb_2_pix[ L + cr_r ] | | |
| 473 rgb_2_pix[ L + crb_g ] | | |
| 474 rgb_2_pix[ L + cb_b ]); | |
| 475 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 476 (value ) & 0xFF; | |
| 477 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 478 (value >> 8) & 0xFF; | |
| 479 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 480 (value >> 16) & 0xFF; | |
| 481 row1 += 2*3; | |
| 482 | |
| 483 L = *lum++; | |
| 484 value = (rgb_2_pix[ L + cr_r ] | | |
| 485 rgb_2_pix[ L + crb_g ] | | |
| 486 rgb_2_pix[ L + cb_b ]); | |
| 487 row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] = | |
| 488 (value ) & 0xFF; | |
| 489 row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] = | |
| 490 (value >> 8) & 0xFF; | |
| 491 row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] = | |
| 492 (value >> 16) & 0xFF; | |
| 493 row1 += 2*3; | |
| 494 | |
| 495 | |
| 496 /* Now, do second row. */ | |
| 497 | |
| 498 L = *lum2++; | |
| 499 value = (rgb_2_pix[ L + cr_r ] | | |
| 500 rgb_2_pix[ L + crb_g ] | | |
| 501 rgb_2_pix[ L + cb_b ]); | |
| 502 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 503 (value ) & 0xFF; | |
| 504 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 505 (value >> 8) & 0xFF; | |
| 506 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 507 (value >> 16) & 0xFF; | |
| 508 row2 += 2*3; | |
| 509 | |
| 510 L = *lum2++; | |
| 511 value = (rgb_2_pix[ L + cr_r ] | | |
| 512 rgb_2_pix[ L + crb_g ] | | |
| 513 rgb_2_pix[ L + cb_b ]); | |
| 514 row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] = | |
| 515 (value ) & 0xFF; | |
| 516 row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] = | |
| 517 (value >> 8) & 0xFF; | |
| 518 row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] = | |
| 519 (value >> 16) & 0xFF; | |
| 520 row2 += 2*3; | |
| 521 } | |
| 522 | |
| 523 /* | |
| 524 * These values are at the start of the next line, (due | |
| 525 * to the ++'s above),but they need to be at the start | |
| 526 * of the line after that. | |
| 527 */ | |
| 528 lum += cols; | |
| 529 lum2 += cols; | |
| 530 row1 += mod; | |
| 531 row2 += mod; | |
| 532 } | |
| 533 } | |
| 534 | |
| 535 static void Color32DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 536 unsigned char *lum, unsigned char *cr, | |
| 537 unsigned char *cb, unsigned char *out, | |
| 538 int rows, int cols, int mod ) | |
| 539 { | |
| 540 unsigned int* row1 = (unsigned int*) out; | |
| 541 const int next_row = cols*2+mod; | |
| 542 unsigned int* row2 = row1 + 2*next_row; | |
| 543 unsigned char* lum2; | |
| 544 int x, y; | |
| 545 int cr_r; | |
| 546 int crb_g; | |
| 547 int cb_b; | |
| 548 int cols_2 = cols / 2; | |
| 549 | |
| 550 lum2 = lum + cols; | |
| 551 | |
| 552 mod = (next_row * 3) + mod; | |
| 553 | |
| 554 y = rows / 2; | |
| 555 while( y-- ) | |
| 556 { | |
| 557 x = cols_2; | |
| 558 while( x-- ) | |
| 559 { | |
| 560 register int L; | |
| 561 | |
| 562 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 563 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 564 + colortab[ *cb + 2*256 ]; | |
| 565 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 566 ++cr; ++cb; | |
| 567 | |
| 568 L = *lum++; | |
| 569 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = | |
| 570 (rgb_2_pix[ L + cr_r ] | | |
| 571 rgb_2_pix[ L + crb_g ] | | |
| 572 rgb_2_pix[ L + cb_b ]); | |
| 573 row1 += 2; | |
| 574 | |
| 575 L = *lum++; | |
| 576 row1[0] = row1[1] = row1[next_row] = row1[next_row+1] = | |
| 577 (rgb_2_pix[ L + cr_r ] | | |
| 578 rgb_2_pix[ L + crb_g ] | | |
| 579 rgb_2_pix[ L + cb_b ]); | |
| 580 row1 += 2; | |
| 581 | |
| 582 | |
| 583 /* Now, do second row. */ | |
| 584 | |
| 585 L = *lum2++; | |
| 586 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 587 (rgb_2_pix[ L + cr_r ] | | |
| 588 rgb_2_pix[ L + crb_g ] | | |
| 589 rgb_2_pix[ L + cb_b ]); | |
| 590 row2 += 2; | |
| 591 | |
| 592 L = *lum2++; | |
| 593 row2[0] = row2[1] = row2[next_row] = row2[next_row+1] = | |
| 594 (rgb_2_pix[ L + cr_r ] | | |
| 595 rgb_2_pix[ L + crb_g ] | | |
| 596 rgb_2_pix[ L + cb_b ]); | |
| 597 row2 += 2; | |
| 598 } | |
| 599 | |
| 600 /* | |
| 601 * These values are at the start of the next line, (due | |
| 602 * to the ++'s above),but they need to be at the start | |
| 603 * of the line after that. | |
| 604 */ | |
| 605 lum += cols; | |
| 606 lum2 += cols; | |
| 607 row1 += mod; | |
| 608 row2 += mod; | |
| 609 } | |
| 610 } | |
| 611 | |
| 612 static void Color16DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 613 unsigned char *lum, unsigned char *cr, | |
| 614 unsigned char *cb, unsigned char *out, | |
| 615 int rows, int cols, int mod ) | |
| 616 { | |
| 617 unsigned short* row; | |
| 618 int x, y; | |
| 619 int cr_r; | |
| 620 int crb_g; | |
| 621 int cb_b; | |
| 622 int cols_2 = cols / 2; | |
| 623 | |
| 624 row = (unsigned short*) out; | |
| 625 | |
| 626 y = rows; | |
| 627 while( y-- ) | |
| 628 { | |
| 629 x = cols_2; | |
| 630 while( x-- ) | |
| 631 { | |
| 632 register int L; | |
| 633 | |
| 634 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 635 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 636 + colortab[ *cb + 2*256 ]; | |
| 637 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 638 cr += 4; cb += 4; | |
| 639 | |
| 640 L = *lum; lum += 2; | |
|
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641 *row++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | |
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642 rgb_2_pix[ L + crb_g ] | |
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643 rgb_2_pix[ L + cb_b ]); |
| 0 | 644 |
| 645 L = *lum; lum += 2; | |
|
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646 *row++ = (unsigned short)(rgb_2_pix[ L + cr_r ] | |
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647 rgb_2_pix[ L + crb_g ] | |
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648 rgb_2_pix[ L + cb_b ]); |
| 0 | 649 |
| 650 } | |
| 651 | |
| 652 row += mod; | |
| 653 } | |
| 654 } | |
| 655 | |
| 656 static void Color24DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 657 unsigned char *lum, unsigned char *cr, | |
| 658 unsigned char *cb, unsigned char *out, | |
| 659 int rows, int cols, int mod ) | |
| 660 { | |
| 661 unsigned int value; | |
| 662 unsigned char* row; | |
| 663 int x, y; | |
| 664 int cr_r; | |
| 665 int crb_g; | |
| 666 int cb_b; | |
| 667 int cols_2 = cols / 2; | |
| 668 | |
| 669 row = (unsigned char*) out; | |
| 670 mod *= 3; | |
| 671 y = rows; | |
| 672 while( y-- ) | |
| 673 { | |
| 674 x = cols_2; | |
| 675 while( x-- ) | |
| 676 { | |
| 677 register int L; | |
| 678 | |
| 679 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 680 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 681 + colortab[ *cb + 2*256 ]; | |
| 682 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 683 cr += 4; cb += 4; | |
| 684 | |
| 685 L = *lum; lum += 2; | |
| 686 value = (rgb_2_pix[ L + cr_r ] | | |
| 687 rgb_2_pix[ L + crb_g ] | | |
| 688 rgb_2_pix[ L + cb_b ]); | |
| 689 *row++ = (value ) & 0xFF; | |
| 690 *row++ = (value >> 8) & 0xFF; | |
| 691 *row++ = (value >> 16) & 0xFF; | |
| 692 | |
| 693 L = *lum; lum += 2; | |
| 694 value = (rgb_2_pix[ L + cr_r ] | | |
| 695 rgb_2_pix[ L + crb_g ] | | |
| 696 rgb_2_pix[ L + cb_b ]); | |
| 697 *row++ = (value ) & 0xFF; | |
| 698 *row++ = (value >> 8) & 0xFF; | |
| 699 *row++ = (value >> 16) & 0xFF; | |
| 700 | |
| 701 } | |
| 702 row += mod; | |
| 703 } | |
| 704 } | |
| 705 | |
| 706 static void Color32DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix, | |
| 707 unsigned char *lum, unsigned char *cr, | |
| 708 unsigned char *cb, unsigned char *out, | |
| 709 int rows, int cols, int mod ) | |
| 710 { | |
| 711 unsigned int* row; | |
| 712 int x, y; | |
| 713 int cr_r; | |
| 714 int crb_g; | |
| 715 int cb_b; | |
| 716 int cols_2 = cols / 2; | |
| 717 | |
| 718 row = (unsigned int*) out; | |
| 719 y = rows; | |
| 720 while( y-- ) | |
| 721 { | |
| 722 x = cols_2; | |
| 723 while( x-- ) | |
| 724 { | |
| 725 register int L; | |
| 726 | |
| 727 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 728 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 729 + colortab[ *cb + 2*256 ]; | |
| 730 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 731 cr += 4; cb += 4; | |
| 732 | |
| 733 L = *lum; lum += 2; | |
| 734 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 735 rgb_2_pix[ L + crb_g ] | | |
| 736 rgb_2_pix[ L + cb_b ]); | |
| 737 | |
| 738 L = *lum; lum += 2; | |
| 739 *row++ = (rgb_2_pix[ L + cr_r ] | | |
| 740 rgb_2_pix[ L + crb_g ] | | |
| 741 rgb_2_pix[ L + cb_b ]); | |
| 742 | |
| 743 | |
| 744 } | |
| 745 row += mod; | |
| 746 } | |
| 747 } | |
| 748 | |
| 749 /* | |
| 750 * In this function I make use of a nasty trick. The tables have the lower | |
| 751 * 16 bits replicated in the upper 16. This means I can write ints and get | |
| 752 * the horisontal doubling for free (almost). | |
| 753 */ | |
| 754 static void Color16DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 755 unsigned char *lum, unsigned char *cr, | |
| 756 unsigned char *cb, unsigned char *out, | |
| 757 int rows, int cols, int mod ) | |
| 758 { | |
| 759 unsigned int* row = (unsigned int*) out; | |
| 760 const int next_row = cols+(mod/2); | |
| 761 int x, y; | |
| 762 int cr_r; | |
| 763 int crb_g; | |
| 764 int cb_b; | |
| 765 int cols_2 = cols / 2; | |
| 766 | |
| 767 y = rows; | |
| 768 while( y-- ) | |
| 769 { | |
| 770 x = cols_2; | |
| 771 while( x-- ) | |
| 772 { | |
| 773 register int L; | |
| 774 | |
| 775 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 776 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 777 + colortab[ *cb + 2*256 ]; | |
| 778 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 779 cr += 4; cb += 4; | |
| 780 | |
| 781 L = *lum; lum += 2; | |
| 782 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 783 rgb_2_pix[ L + crb_g ] | | |
| 784 rgb_2_pix[ L + cb_b ]); | |
| 785 row++; | |
| 786 | |
| 787 L = *lum; lum += 2; | |
| 788 row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] | | |
| 789 rgb_2_pix[ L + crb_g ] | | |
| 790 rgb_2_pix[ L + cb_b ]); | |
| 791 row++; | |
| 792 | |
| 793 } | |
| 794 row += next_row; | |
| 795 } | |
| 796 } | |
| 797 | |
| 798 static void Color24DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 799 unsigned char *lum, unsigned char *cr, | |
| 800 unsigned char *cb, unsigned char *out, | |
| 801 int rows, int cols, int mod ) | |
| 802 { | |
| 803 unsigned int value; | |
| 804 unsigned char* row = out; | |
| 805 const int next_row = (cols*2 + mod) * 3; | |
| 806 int x, y; | |
| 807 int cr_r; | |
| 808 int crb_g; | |
| 809 int cb_b; | |
| 810 int cols_2 = cols / 2; | |
| 811 y = rows; | |
| 812 while( y-- ) | |
| 813 { | |
| 814 x = cols_2; | |
| 815 while( x-- ) | |
| 816 { | |
| 817 register int L; | |
| 818 | |
| 819 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 820 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 821 + colortab[ *cb + 2*256 ]; | |
| 822 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 823 cr += 4; cb += 4; | |
| 824 | |
| 825 L = *lum; lum += 2; | |
| 826 value = (rgb_2_pix[ L + cr_r ] | | |
| 827 rgb_2_pix[ L + crb_g ] | | |
| 828 rgb_2_pix[ L + cb_b ]); | |
| 829 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 830 (value ) & 0xFF; | |
| 831 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 832 (value >> 8) & 0xFF; | |
| 833 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 834 (value >> 16) & 0xFF; | |
| 835 row += 2*3; | |
| 836 | |
| 837 L = *lum; lum += 2; | |
| 838 value = (rgb_2_pix[ L + cr_r ] | | |
| 839 rgb_2_pix[ L + crb_g ] | | |
| 840 rgb_2_pix[ L + cb_b ]); | |
| 841 row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] = | |
| 842 (value ) & 0xFF; | |
| 843 row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] = | |
| 844 (value >> 8) & 0xFF; | |
| 845 row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] = | |
| 846 (value >> 16) & 0xFF; | |
| 847 row += 2*3; | |
| 848 | |
| 849 } | |
| 850 row += next_row; | |
| 851 } | |
| 852 } | |
| 853 | |
| 854 static void Color32DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix, | |
| 855 unsigned char *lum, unsigned char *cr, | |
| 856 unsigned char *cb, unsigned char *out, | |
| 857 int rows, int cols, int mod ) | |
| 858 { | |
| 859 unsigned int* row = (unsigned int*) out; | |
| 860 const int next_row = cols*2+mod; | |
| 861 int x, y; | |
| 862 int cr_r; | |
| 863 int crb_g; | |
| 864 int cb_b; | |
| 865 int cols_2 = cols / 2; | |
| 866 mod+=mod; | |
| 867 y = rows; | |
| 868 while( y-- ) | |
| 869 { | |
| 870 x = cols_2; | |
| 871 while( x-- ) | |
| 872 { | |
| 873 register int L; | |
| 874 | |
| 875 cr_r = 0*768+256 + colortab[ *cr + 0*256 ]; | |
| 876 crb_g = 1*768+256 + colortab[ *cr + 1*256 ] | |
| 877 + colortab[ *cb + 2*256 ]; | |
| 878 cb_b = 2*768+256 + colortab[ *cb + 3*256 ]; | |
| 879 cr += 4; cb += 4; | |
| 880 | |
| 881 L = *lum; lum += 2; | |
| 882 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 883 (rgb_2_pix[ L + cr_r ] | | |
| 884 rgb_2_pix[ L + crb_g ] | | |
| 885 rgb_2_pix[ L + cb_b ]); | |
| 886 row += 2; | |
| 887 | |
| 888 L = *lum; lum += 2; | |
| 889 row[0] = row[1] = row[next_row] = row[next_row+1] = | |
| 890 (rgb_2_pix[ L + cr_r ] | | |
| 891 rgb_2_pix[ L + crb_g ] | | |
| 892 rgb_2_pix[ L + cb_b ]); | |
| 893 row += 2; | |
| 894 | |
| 895 | |
| 896 } | |
| 897 | |
| 898 row += next_row; | |
| 899 } | |
| 900 } | |
| 901 | |
| 902 /* | |
| 903 * How many 1 bits are there in the Uint32. | |
| 904 * Low performance, do not call often. | |
| 905 */ | |
| 906 static int number_of_bits_set( Uint32 a ) | |
| 907 { | |
| 908 if(!a) return 0; | |
| 909 if(a & 1) return 1 + number_of_bits_set(a >> 1); | |
| 910 return(number_of_bits_set(a >> 1)); | |
| 911 } | |
| 912 | |
| 913 /* | |
| 914 * How many 0 bits are there at least significant end of Uint32. | |
| 915 * Low performance, do not call often. | |
| 916 */ | |
| 917 static int free_bits_at_bottom( Uint32 a ) | |
| 918 { | |
| 919 /* assume char is 8 bits */ | |
| 920 if(!a) return sizeof(Uint32) * 8; | |
| 921 if(((Sint32)a) & 1l) return 0; | |
| 922 return 1 + free_bits_at_bottom ( a >> 1); | |
| 923 } | |
| 924 | |
| 925 | |
| 926 SDL_Overlay *SDL_CreateYUV_SW(_THIS, int width, int height, Uint32 format, SDL_Surface *display) | |
| 927 { | |
| 928 SDL_Overlay *overlay; | |
| 929 struct private_yuvhwdata *swdata; | |
| 930 int *Cr_r_tab; | |
| 931 int *Cr_g_tab; | |
| 932 int *Cb_g_tab; | |
| 933 int *Cb_b_tab; | |
| 934 Uint32 *r_2_pix_alloc; | |
| 935 Uint32 *g_2_pix_alloc; | |
| 936 Uint32 *b_2_pix_alloc; | |
|
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937 int i; |
| 0 | 938 int CR, CB; |
| 939 Uint32 Rmask, Gmask, Bmask; | |
| 940 | |
| 941 /* Only RGB packed pixel conversion supported */ | |
| 942 if ( (display->format->BytesPerPixel != 2) && | |
| 943 (display->format->BytesPerPixel != 3) && | |
| 944 (display->format->BytesPerPixel != 4) ) { | |
| 945 SDL_SetError("Can't use YUV data on non 16/24/32 bit surfaces"); | |
| 946 return(NULL); | |
| 947 } | |
| 948 | |
| 949 /* Verify that we support the format */ | |
| 950 switch (format) { | |
| 951 case SDL_YV12_OVERLAY: | |
| 952 case SDL_IYUV_OVERLAY: | |
| 953 case SDL_YUY2_OVERLAY: | |
| 954 case SDL_UYVY_OVERLAY: | |
| 955 case SDL_YVYU_OVERLAY: | |
| 956 break; | |
| 957 default: | |
| 958 SDL_SetError("Unsupported YUV format"); | |
| 959 return(NULL); | |
| 960 } | |
| 961 | |
| 962 /* Create the overlay structure */ | |
|
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963 overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay); |
| 0 | 964 if ( overlay == NULL ) { |
| 965 SDL_OutOfMemory(); | |
| 966 return(NULL); | |
| 967 } | |
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968 SDL_memset(overlay, 0, (sizeof *overlay)); |
| 0 | 969 |
| 970 /* Fill in the basic members */ | |
| 971 overlay->format = format; | |
| 972 overlay->w = width; | |
| 973 overlay->h = height; | |
| 974 | |
| 975 /* Set up the YUV surface function structure */ | |
| 976 overlay->hwfuncs = &sw_yuvfuncs; | |
| 977 | |
| 978 /* Create the pixel data and lookup tables */ | |
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979 swdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *swdata); |
| 0 | 980 overlay->hwdata = swdata; |
| 981 if ( swdata == NULL ) { | |
| 982 SDL_OutOfMemory(); | |
| 983 SDL_FreeYUVOverlay(overlay); | |
| 984 return(NULL); | |
| 985 } | |
| 986 swdata->stretch = NULL; | |
| 987 swdata->display = display; | |
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988 swdata->pixels = (Uint8 *) SDL_malloc(width*height*2); |
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989 swdata->colortab = (int *)SDL_malloc(4*256*sizeof(int)); |
| 0 | 990 Cr_r_tab = &swdata->colortab[0*256]; |
| 991 Cr_g_tab = &swdata->colortab[1*256]; | |
| 992 Cb_g_tab = &swdata->colortab[2*256]; | |
| 993 Cb_b_tab = &swdata->colortab[3*256]; | |
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994 swdata->rgb_2_pix = (Uint32 *)SDL_malloc(3*768*sizeof(Uint32)); |
| 0 | 995 r_2_pix_alloc = &swdata->rgb_2_pix[0*768]; |
| 996 g_2_pix_alloc = &swdata->rgb_2_pix[1*768]; | |
| 997 b_2_pix_alloc = &swdata->rgb_2_pix[2*768]; | |
| 998 if ( ! swdata->pixels || ! swdata->colortab || ! swdata->rgb_2_pix ) { | |
| 999 SDL_OutOfMemory(); | |
| 1000 SDL_FreeYUVOverlay(overlay); | |
| 1001 return(NULL); | |
| 1002 } | |
| 1003 | |
| 1004 /* Generate the tables for the display surface */ | |
| 1005 for (i=0; i<256; i++) { | |
| 1006 /* Gamma correction (luminescence table) and chroma correction | |
| 1007 would be done here. See the Berkeley mpeg_play sources. | |
| 1008 */ | |
| 1009 CB = CR = (i-128); | |
| 1010 Cr_r_tab[i] = (int) ( (0.419/0.299) * CR); | |
| 1011 Cr_g_tab[i] = (int) (-(0.299/0.419) * CR); | |
| 1012 Cb_g_tab[i] = (int) (-(0.114/0.331) * CB); | |
| 1013 Cb_b_tab[i] = (int) ( (0.587/0.331) * CB); | |
| 1014 } | |
| 1015 | |
| 1016 /* | |
| 1017 * Set up entries 0-255 in rgb-to-pixel value tables. | |
| 1018 */ | |
| 1019 Rmask = display->format->Rmask; | |
| 1020 Gmask = display->format->Gmask; | |
| 1021 Bmask = display->format->Bmask; | |
| 1022 for ( i=0; i<256; ++i ) { | |
| 1023 r_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Rmask)); | |
| 1024 r_2_pix_alloc[i+256] <<= free_bits_at_bottom(Rmask); | |
| 1025 g_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Gmask)); | |
| 1026 g_2_pix_alloc[i+256] <<= free_bits_at_bottom(Gmask); | |
| 1027 b_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Bmask)); | |
| 1028 b_2_pix_alloc[i+256] <<= free_bits_at_bottom(Bmask); | |
| 1029 } | |
| 1030 | |
| 1031 /* | |
| 1032 * If we have 16-bit output depth, then we double the value | |
| 1033 * in the top word. This means that we can write out both | |
| 1034 * pixels in the pixel doubling mode with one op. It is | |
| 1035 * harmless in the normal case as storing a 32-bit value | |
| 1036 * through a short pointer will lose the top bits anyway. | |
| 1037 */ | |
| 1038 if( display->format->BytesPerPixel == 2 ) { | |
| 1039 for ( i=0; i<256; ++i ) { | |
| 1040 r_2_pix_alloc[i+256] |= (r_2_pix_alloc[i+256]) << 16; | |
| 1041 g_2_pix_alloc[i+256] |= (g_2_pix_alloc[i+256]) << 16; | |
| 1042 b_2_pix_alloc[i+256] |= (b_2_pix_alloc[i+256]) << 16; | |
| 1043 } | |
| 1044 } | |
| 1045 | |
| 1046 /* | |
| 1047 * Spread out the values we have to the rest of the array so that | |
| 1048 * we do not need to check for overflow. | |
| 1049 */ | |
| 1050 for ( i=0; i<256; ++i ) { | |
| 1051 r_2_pix_alloc[i] = r_2_pix_alloc[256]; | |
| 1052 r_2_pix_alloc[i+512] = r_2_pix_alloc[511]; | |
| 1053 g_2_pix_alloc[i] = g_2_pix_alloc[256]; | |
| 1054 g_2_pix_alloc[i+512] = g_2_pix_alloc[511]; | |
| 1055 b_2_pix_alloc[i] = b_2_pix_alloc[256]; | |
| 1056 b_2_pix_alloc[i+512] = b_2_pix_alloc[511]; | |
| 1057 } | |
| 1058 | |
| 1059 /* You have chosen wisely... */ | |
| 1060 switch (format) { | |
| 1061 case SDL_YV12_OVERLAY: | |
| 1062 case SDL_IYUV_OVERLAY: | |
| 1063 if ( display->format->BytesPerPixel == 2 ) { | |
|
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1064 #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES |
| 0 | 1065 /* inline assembly functions */ |
|
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1066 if ( SDL_HasMMX() && (Rmask == 0xF800) && |
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1067 (Gmask == 0x07E0) && |
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1068 (Bmask == 0x001F) && |
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1069 (width & 15) == 0) { |
| 0 | 1070 /*printf("Using MMX 16-bit 565 dither\n");*/ |
| 1071 swdata->Display1X = Color565DitherYV12MMX1X; | |
| 1072 } else { | |
| 1073 /*printf("Using C 16-bit dither\n");*/ | |
| 1074 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1075 } | |
| 1076 #else | |
| 1077 swdata->Display1X = Color16DitherYV12Mod1X; | |
| 1078 #endif | |
| 1079 swdata->Display2X = Color16DitherYV12Mod2X; | |
| 1080 } | |
| 1081 if ( display->format->BytesPerPixel == 3 ) { | |
| 1082 swdata->Display1X = Color24DitherYV12Mod1X; | |
| 1083 swdata->Display2X = Color24DitherYV12Mod2X; | |
| 1084 } | |
| 1085 if ( display->format->BytesPerPixel == 4 ) { | |
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1086 #if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES |
| 0 | 1087 /* inline assembly functions */ |
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1088 if ( SDL_HasMMX() && (Rmask == 0x00FF0000) && |
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1089 (Gmask == 0x0000FF00) && |
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1090 (Bmask == 0x000000FF) && |
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1091 (width & 15) == 0) { |
| 0 | 1092 /*printf("Using MMX 32-bit dither\n");*/ |
| 1093 swdata->Display1X = ColorRGBDitherYV12MMX1X; | |
| 1094 } else { | |
| 1095 /*printf("Using C 32-bit dither\n");*/ | |
| 1096 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1097 } | |
| 1098 #else | |
| 1099 swdata->Display1X = Color32DitherYV12Mod1X; | |
| 1100 #endif | |
| 1101 swdata->Display2X = Color32DitherYV12Mod2X; | |
| 1102 } | |
| 1103 break; | |
| 1104 case SDL_YUY2_OVERLAY: | |
| 1105 case SDL_UYVY_OVERLAY: | |
| 1106 case SDL_YVYU_OVERLAY: | |
| 1107 if ( display->format->BytesPerPixel == 2 ) { | |
| 1108 swdata->Display1X = Color16DitherYUY2Mod1X; | |
| 1109 swdata->Display2X = Color16DitherYUY2Mod2X; | |
| 1110 } | |
| 1111 if ( display->format->BytesPerPixel == 3 ) { | |
| 1112 swdata->Display1X = Color24DitherYUY2Mod1X; | |
| 1113 swdata->Display2X = Color24DitherYUY2Mod2X; | |
| 1114 } | |
| 1115 if ( display->format->BytesPerPixel == 4 ) { | |
| 1116 swdata->Display1X = Color32DitherYUY2Mod1X; | |
| 1117 swdata->Display2X = Color32DitherYUY2Mod2X; | |
| 1118 } | |
| 1119 break; | |
| 1120 default: | |
| 1121 /* We should never get here (caught above) */ | |
| 1122 break; | |
| 1123 } | |
| 1124 | |
| 1125 /* Find the pitch and offset values for the overlay */ | |
| 1126 overlay->pitches = swdata->pitches; | |
| 1127 overlay->pixels = swdata->planes; | |
| 1128 switch (format) { | |
| 1129 case SDL_YV12_OVERLAY: | |
| 1130 case SDL_IYUV_OVERLAY: | |
| 1131 overlay->pitches[0] = overlay->w; | |
| 1132 overlay->pitches[1] = overlay->pitches[0] / 2; | |
| 1133 overlay->pitches[2] = overlay->pitches[0] / 2; | |
| 1134 overlay->pixels[0] = swdata->pixels; | |
| 1135 overlay->pixels[1] = overlay->pixels[0] + | |
| 1136 overlay->pitches[0] * overlay->h; | |
| 1137 overlay->pixels[2] = overlay->pixels[1] + | |
| 1138 overlay->pitches[1] * overlay->h / 2; | |
| 1139 overlay->planes = 3; | |
| 1140 break; | |
| 1141 case SDL_YUY2_OVERLAY: | |
| 1142 case SDL_UYVY_OVERLAY: | |
| 1143 case SDL_YVYU_OVERLAY: | |
| 1144 overlay->pitches[0] = overlay->w*2; | |
| 1145 overlay->pixels[0] = swdata->pixels; | |
| 1146 overlay->planes = 1; | |
| 1147 break; | |
| 1148 default: | |
| 1149 /* We should never get here (caught above) */ | |
| 1150 break; | |
| 1151 } | |
| 1152 | |
| 1153 /* We're all done.. */ | |
| 1154 return(overlay); | |
| 1155 } | |
| 1156 | |
| 1157 int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1158 { | |
| 1159 return(0); | |
| 1160 } | |
| 1161 | |
| 1162 void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1163 { | |
| 1164 return; | |
| 1165 } | |
| 1166 | |
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1167 int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst) |
| 0 | 1168 { |
| 1169 struct private_yuvhwdata *swdata; | |
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1170 int stretch; |
| 0 | 1171 int scale_2x; |
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1172 SDL_Surface *display; |
| 0 | 1173 Uint8 *lum, *Cr, *Cb; |
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1174 Uint8 *dstp; |
| 0 | 1175 int mod; |
| 1176 | |
| 1177 swdata = overlay->hwdata; | |
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1178 stretch = 0; |
| 0 | 1179 scale_2x = 0; |
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1180 if ( src->x || src->y || src->w < overlay->w || src->h < overlay->h ) { |
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1181 /* The source rectangle has been clipped. |
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1182 Using a scratch surface is easier than adding clipped |
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1183 source support to all the blitters, plus that would |
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1184 slow them down in the general unclipped case. |
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1185 */ |
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1186 stretch = 1; |
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1187 } else if ( (src->w != dst->w) || (src->h != dst->h) ) { |
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1188 if ( (dst->w == 2*src->w) && |
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1189 (dst->h == 2*src->h) ) { |
| 0 | 1190 scale_2x = 1; |
| 1191 } else { | |
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1192 stretch = 1; |
| 0 | 1193 } |
| 1194 } | |
| 1195 if ( stretch ) { | |
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1196 if ( ! swdata->stretch ) { |
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1197 display = swdata->display; |
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1198 swdata->stretch = SDL_CreateRGBSurface( |
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1199 SDL_SWSURFACE, |
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1200 overlay->w, overlay->h, |
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1201 display->format->BitsPerPixel, |
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1202 display->format->Rmask, |
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1203 display->format->Gmask, |
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1204 display->format->Bmask, 0); |
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1205 if ( ! swdata->stretch ) { |
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1206 return(-1); |
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1207 } |
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1208 } |
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1209 display = swdata->stretch; |
| 0 | 1210 } else { |
| 1211 display = swdata->display; | |
| 1212 } | |
| 1213 switch (overlay->format) { | |
| 1214 case SDL_YV12_OVERLAY: | |
| 1215 lum = overlay->pixels[0]; | |
| 1216 Cr = overlay->pixels[1]; | |
| 1217 Cb = overlay->pixels[2]; | |
| 1218 break; | |
| 1219 case SDL_IYUV_OVERLAY: | |
| 1220 lum = overlay->pixels[0]; | |
| 1221 Cr = overlay->pixels[2]; | |
| 1222 Cb = overlay->pixels[1]; | |
| 1223 break; | |
| 1224 case SDL_YUY2_OVERLAY: | |
| 1225 lum = overlay->pixels[0]; | |
| 1226 Cr = lum + 3; | |
| 1227 Cb = lum + 1; | |
| 1228 break; | |
| 1229 case SDL_UYVY_OVERLAY: | |
| 1230 lum = overlay->pixels[0]+1; | |
| 1231 Cr = lum + 1; | |
| 1232 Cb = lum - 1; | |
| 1233 break; | |
| 1234 case SDL_YVYU_OVERLAY: | |
| 1235 lum = overlay->pixels[0]; | |
| 1236 Cr = lum + 1; | |
| 1237 Cb = lum + 3; | |
| 1238 break; | |
| 1239 default: | |
|
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1240 SDL_SetError("Unsupported YUV format in blit"); |
| 0 | 1241 return(-1); |
| 1242 } | |
| 1243 if ( SDL_MUSTLOCK(display) ) { | |
| 1244 if ( SDL_LockSurface(display) < 0 ) { | |
| 1245 return(-1); | |
| 1246 } | |
| 1247 } | |
| 1248 if ( stretch ) { | |
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1249 dstp = (Uint8 *)swdata->stretch->pixels; |
| 0 | 1250 } else { |
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1251 dstp = (Uint8 *)display->pixels |
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1252 + dst->x * display->format->BytesPerPixel |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1428
diff
changeset
|
1253 + dst->y * display->pitch; |
| 0 | 1254 } |
| 1255 mod = (display->pitch / display->format->BytesPerPixel); | |
| 1256 | |
| 1257 if ( scale_2x ) { | |
| 1258 mod -= (overlay->w * 2); | |
| 1259 swdata->Display2X(swdata->colortab, swdata->rgb_2_pix, | |
|
1643
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1428
diff
changeset
|
1260 lum, Cr, Cb, dstp, overlay->h, overlay->w, mod); |
| 0 | 1261 } else { |
| 1262 mod -= overlay->w; | |
| 1263 swdata->Display1X(swdata->colortab, swdata->rgb_2_pix, | |
|
1643
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1428
diff
changeset
|
1264 lum, Cr, Cb, dstp, overlay->h, overlay->w, mod); |
| 0 | 1265 } |
| 1266 if ( SDL_MUSTLOCK(display) ) { | |
| 1267 SDL_UnlockSurface(display); | |
| 1268 } | |
| 1269 if ( stretch ) { | |
| 1270 display = swdata->display; | |
|
1643
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1428
diff
changeset
|
1271 SDL_SoftStretch(swdata->stretch, src, display, dst); |
| 0 | 1272 } |
|
1643
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1428
diff
changeset
|
1273 SDL_UpdateRects(display, 1, dst); |
| 0 | 1274 |
| 1275 return(0); | |
| 1276 } | |
| 1277 | |
| 1278 void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay) | |
| 1279 { | |
| 1280 struct private_yuvhwdata *swdata; | |
| 1281 | |
| 1282 swdata = overlay->hwdata; | |
| 1283 if ( swdata ) { | |
|
9
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1284 if ( swdata->stretch ) { |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1285 SDL_FreeSurface(swdata->stretch); |
|
a1c15fa4abb9
Fixed memory leak in software YUV stretch code
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1286 } |
| 0 | 1287 if ( swdata->pixels ) { |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1288 SDL_free(swdata->pixels); |
| 0 | 1289 } |
| 1290 if ( swdata->colortab ) { | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1291 SDL_free(swdata->colortab); |
| 0 | 1292 } |
| 1293 if ( swdata->rgb_2_pix ) { | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1294 SDL_free(swdata->rgb_2_pix); |
| 0 | 1295 } |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1296 SDL_free(swdata); |
|
4158
96ce26f24b01
Date: Sun, 7 Sep 2008 15:17:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
4064
diff
changeset
|
1297 overlay->hwdata = NULL; |
| 0 | 1298 } |
| 1299 } |