Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv_sw.c @ 1869:65800e7f7146
Date: Fri, 9 Jun 2006 11:35:23 +0300
From: "Janne Junnila"
Subject: [SDL] SDL_SetGamma bug
You can't set the the gamma 'brighter' than 1.0. There's a patch attached.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 20 Jun 2006 06:50:42 +0000 |
parents | 8a858076f39d |
children | 782fd950bd46 c121d94672cb f420bba13676 |
rev | line source |
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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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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 | |
1413 | 124 #if 0 /*defined(__GNUC__) && defined(__i386__) && 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 ) { | |
1413 | 1064 #if 0 /*defined(__GNUC__) && defined(__i386__) && SDL_ASSEMBLY_ROUTINES*/ |
0 | 1065 /* inline assembly functions */ |
739
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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 ) { | |
1413 | 1086 #if 0 /*defined(__GNUC__) && defined(__i386__) && 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: | |
292
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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 |
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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, | |
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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, | |
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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; | |
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1271 SDL_SoftStretch(swdata->stretch, src, display, dst); |
0 | 1272 } |
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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 ) { | |
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1284 if ( swdata->stretch ) { |
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1285 SDL_FreeSurface(swdata->stretch); |
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1286 } |
0 | 1287 if ( swdata->pixels ) { |
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1288 SDL_free(swdata->pixels); |
0 | 1289 } |
1290 if ( swdata->colortab ) { | |
1336
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1291 SDL_free(swdata->colortab); |
0 | 1292 } |
1293 if ( swdata->rgb_2_pix ) { | |
1336
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1294 SDL_free(swdata->rgb_2_pix); |
0 | 1295 } |
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1296 SDL_free(swdata); |
0 | 1297 } |
1298 } |