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Simplify if() in copy_and_dup()
[ffmpeg-lucabe.git] / libavcodec / imgconvert.c
blobd182c5905d7193d5d9ac45423618447092b1f745
1 /*
2 * Misc image conversion routines
3 * Copyright (c) 2001, 2002, 2003 Fabrice Bellard.
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file imgconvert.c
24 * misc image conversion routines
25 */
26
27 /* TODO:
28 * - write 'ffimg' program to test all the image related stuff
29 * - move all api to slice based system
30 * - integrate deinterlacing, postprocessing and scaling in the conversion process
31 */
32
33 #include "avcodec.h"
34 #include "dsputil.h"
35 #include "colorspace.h"
36
37 #ifdef HAVE_MMX
38 #include "i386/mmx.h"
39 #endif
40
41 #define xglue(x, y) x ## y
42 #define glue(x, y) xglue(x, y)
43
44 #define FF_COLOR_RGB 0 /**< RGB color space */
45 #define FF_COLOR_GRAY 1 /**< gray color space */
46 #define FF_COLOR_YUV 2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
47 #define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
48
49 #define FF_PIXEL_PLANAR 0 /**< each channel has one component in AVPicture */
50 #define FF_PIXEL_PACKED 1 /**< only one components containing all the channels */
51 #define FF_PIXEL_PALETTE 2 /**< one components containing indexes for a palette */
52
53 typedef struct PixFmtInfo {
54 const char *name;
55 uint8_t nb_channels; /**< number of channels (including alpha) */
56 uint8_t color_type; /**< color type (see FF_COLOR_xxx constants) */
57 uint8_t pixel_type; /**< pixel storage type (see FF_PIXEL_xxx constants) */
58 uint8_t is_alpha : 1; /**< true if alpha can be specified */
59 uint8_t x_chroma_shift; /**< X chroma subsampling factor is 2 ^ shift */
60 uint8_t y_chroma_shift; /**< Y chroma subsampling factor is 2 ^ shift */
61 uint8_t depth; /**< bit depth of the color components */
62 } PixFmtInfo;
63
64 /* this table gives more information about formats */
65 static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
66 /* YUV formats */
67 [PIX_FMT_YUV420P] = {
68 .name = "yuv420p",
69 .nb_channels = 3,
70 .color_type = FF_COLOR_YUV,
71 .pixel_type = FF_PIXEL_PLANAR,
72 .depth = 8,
73 .x_chroma_shift = 1, .y_chroma_shift = 1,
74 },
75 [PIX_FMT_YUV422P] = {
76 .name = "yuv422p",
77 .nb_channels = 3,
78 .color_type = FF_COLOR_YUV,
79 .pixel_type = FF_PIXEL_PLANAR,
80 .depth = 8,
81 .x_chroma_shift = 1, .y_chroma_shift = 0,
82 },
83 [PIX_FMT_YUV444P] = {
84 .name = "yuv444p",
85 .nb_channels = 3,
86 .color_type = FF_COLOR_YUV,
87 .pixel_type = FF_PIXEL_PLANAR,
88 .depth = 8,
89 .x_chroma_shift = 0, .y_chroma_shift = 0,
90 },
91 [PIX_FMT_YUYV422] = {
92 .name = "yuyv422",
93 .nb_channels = 1,
94 .color_type = FF_COLOR_YUV,
95 .pixel_type = FF_PIXEL_PACKED,
96 .depth = 8,
97 .x_chroma_shift = 1, .y_chroma_shift = 0,
98 },
99 [PIX_FMT_UYVY422] = {
100 .name = "uyvy422",
101 .nb_channels = 1,
102 .color_type = FF_COLOR_YUV,
103 .pixel_type = FF_PIXEL_PACKED,
104 .depth = 8,
105 .x_chroma_shift = 1, .y_chroma_shift = 0,
106 },
107 [PIX_FMT_YUV410P] = {
108 .name = "yuv410p",
109 .nb_channels = 3,
110 .color_type = FF_COLOR_YUV,
111 .pixel_type = FF_PIXEL_PLANAR,
112 .depth = 8,
113 .x_chroma_shift = 2, .y_chroma_shift = 2,
114 },
115 [PIX_FMT_YUV411P] = {
116 .name = "yuv411p",
117 .nb_channels = 3,
118 .color_type = FF_COLOR_YUV,
119 .pixel_type = FF_PIXEL_PLANAR,
120 .depth = 8,
121 .x_chroma_shift = 2, .y_chroma_shift = 0,
122 },
123 [PIX_FMT_YUV440P] = {
124 .name = "yuv440p",
125 .nb_channels = 3,
126 .color_type = FF_COLOR_YUV,
127 .pixel_type = FF_PIXEL_PLANAR,
128 .depth = 8,
129 .x_chroma_shift = 0, .y_chroma_shift = 1,
130 },
131
132 /* YUV formats with alpha plane */
133 [PIX_FMT_YUVA420P] = {
134 .name = "yuva420p",
135 .nb_channels = 4,
136 .color_type = FF_COLOR_YUV,
137 .pixel_type = FF_PIXEL_PLANAR,
138 .depth = 8,
139 .x_chroma_shift = 1, .y_chroma_shift = 1,
140 },
141
142 /* JPEG YUV */
143 [PIX_FMT_YUVJ420P] = {
144 .name = "yuvj420p",
145 .nb_channels = 3,
146 .color_type = FF_COLOR_YUV_JPEG,
147 .pixel_type = FF_PIXEL_PLANAR,
148 .depth = 8,
149 .x_chroma_shift = 1, .y_chroma_shift = 1,
150 },
151 [PIX_FMT_YUVJ422P] = {
152 .name = "yuvj422p",
153 .nb_channels = 3,
154 .color_type = FF_COLOR_YUV_JPEG,
155 .pixel_type = FF_PIXEL_PLANAR,
156 .depth = 8,
157 .x_chroma_shift = 1, .y_chroma_shift = 0,
158 },
159 [PIX_FMT_YUVJ444P] = {
160 .name = "yuvj444p",
161 .nb_channels = 3,
162 .color_type = FF_COLOR_YUV_JPEG,
163 .pixel_type = FF_PIXEL_PLANAR,
164 .depth = 8,
165 .x_chroma_shift = 0, .y_chroma_shift = 0,
166 },
167 [PIX_FMT_YUVJ440P] = {
168 .name = "yuvj440p",
169 .nb_channels = 3,
170 .color_type = FF_COLOR_YUV_JPEG,
171 .pixel_type = FF_PIXEL_PLANAR,
172 .depth = 8,
173 .x_chroma_shift = 0, .y_chroma_shift = 1,
174 },
175
176 /* RGB formats */
177 [PIX_FMT_RGB24] = {
178 .name = "rgb24",
179 .nb_channels = 3,
180 .color_type = FF_COLOR_RGB,
181 .pixel_type = FF_PIXEL_PACKED,
182 .depth = 8,
183 .x_chroma_shift = 0, .y_chroma_shift = 0,
184 },
185 [PIX_FMT_BGR24] = {
186 .name = "bgr24",
187 .nb_channels = 3,
188 .color_type = FF_COLOR_RGB,
189 .pixel_type = FF_PIXEL_PACKED,
190 .depth = 8,
191 .x_chroma_shift = 0, .y_chroma_shift = 0,
192 },
193 [PIX_FMT_RGB32] = {
194 .name = "rgb32",
195 .nb_channels = 4, .is_alpha = 1,
196 .color_type = FF_COLOR_RGB,
197 .pixel_type = FF_PIXEL_PACKED,
198 .depth = 8,
199 .x_chroma_shift = 0, .y_chroma_shift = 0,
200 },
201 [PIX_FMT_RGB565] = {
202 .name = "rgb565",
203 .nb_channels = 3,
204 .color_type = FF_COLOR_RGB,
205 .pixel_type = FF_PIXEL_PACKED,
206 .depth = 5,
207 .x_chroma_shift = 0, .y_chroma_shift = 0,
208 },
209 [PIX_FMT_RGB555] = {
210 .name = "rgb555",
211 .nb_channels = 3,
212 .color_type = FF_COLOR_RGB,
213 .pixel_type = FF_PIXEL_PACKED,
214 .depth = 5,
215 .x_chroma_shift = 0, .y_chroma_shift = 0,
216 },
217
218 /* gray / mono formats */
219 [PIX_FMT_GRAY16BE] = {
220 .name = "gray16be",
221 .nb_channels = 1,
222 .color_type = FF_COLOR_GRAY,
223 .pixel_type = FF_PIXEL_PLANAR,
224 .depth = 16,
225 },
226 [PIX_FMT_GRAY16LE] = {
227 .name = "gray16le",
228 .nb_channels = 1,
229 .color_type = FF_COLOR_GRAY,
230 .pixel_type = FF_PIXEL_PLANAR,
231 .depth = 16,
232 },
233 [PIX_FMT_GRAY8] = {
234 .name = "gray",
235 .nb_channels = 1,
236 .color_type = FF_COLOR_GRAY,
237 .pixel_type = FF_PIXEL_PLANAR,
238 .depth = 8,
239 },
240 [PIX_FMT_MONOWHITE] = {
241 .name = "monow",
242 .nb_channels = 1,
243 .color_type = FF_COLOR_GRAY,
244 .pixel_type = FF_PIXEL_PLANAR,
245 .depth = 1,
246 },
247 [PIX_FMT_MONOBLACK] = {
248 .name = "monob",
249 .nb_channels = 1,
250 .color_type = FF_COLOR_GRAY,
251 .pixel_type = FF_PIXEL_PLANAR,
252 .depth = 1,
253 },
254
255 /* paletted formats */
256 [PIX_FMT_PAL8] = {
257 .name = "pal8",
258 .nb_channels = 4, .is_alpha = 1,
259 .color_type = FF_COLOR_RGB,
260 .pixel_type = FF_PIXEL_PALETTE,
261 .depth = 8,
262 },
263 [PIX_FMT_XVMC_MPEG2_MC] = {
264 .name = "xvmcmc",
265 },
266 [PIX_FMT_XVMC_MPEG2_IDCT] = {
267 .name = "xvmcidct",
268 },
269 [PIX_FMT_UYYVYY411] = {
270 .name = "uyyvyy411",
271 .nb_channels = 1,
272 .color_type = FF_COLOR_YUV,
273 .pixel_type = FF_PIXEL_PACKED,
274 .depth = 8,
275 .x_chroma_shift = 2, .y_chroma_shift = 0,
276 },
277 [PIX_FMT_BGR32] = {
278 .name = "bgr32",
279 .nb_channels = 4, .is_alpha = 1,
280 .color_type = FF_COLOR_RGB,
281 .pixel_type = FF_PIXEL_PACKED,
282 .depth = 8,
283 .x_chroma_shift = 0, .y_chroma_shift = 0,
284 },
285 [PIX_FMT_BGR565] = {
286 .name = "bgr565",
287 .nb_channels = 3,
288 .color_type = FF_COLOR_RGB,
289 .pixel_type = FF_PIXEL_PACKED,
290 .depth = 5,
291 .x_chroma_shift = 0, .y_chroma_shift = 0,
292 },
293 [PIX_FMT_BGR555] = {
294 .name = "bgr555",
295 .nb_channels = 3,
296 .color_type = FF_COLOR_RGB,
297 .pixel_type = FF_PIXEL_PACKED,
298 .depth = 5,
299 .x_chroma_shift = 0, .y_chroma_shift = 0,
300 },
301 [PIX_FMT_RGB8] = {
302 .name = "rgb8",
303 .nb_channels = 1,
304 .color_type = FF_COLOR_RGB,
305 .pixel_type = FF_PIXEL_PACKED,
306 .depth = 8,
307 .x_chroma_shift = 0, .y_chroma_shift = 0,
308 },
309 [PIX_FMT_RGB4] = {
310 .name = "rgb4",
311 .nb_channels = 1,
312 .color_type = FF_COLOR_RGB,
313 .pixel_type = FF_PIXEL_PACKED,
314 .depth = 4,
315 .x_chroma_shift = 0, .y_chroma_shift = 0,
316 },
317 [PIX_FMT_RGB4_BYTE] = {
318 .name = "rgb4_byte",
319 .nb_channels = 1,
320 .color_type = FF_COLOR_RGB,
321 .pixel_type = FF_PIXEL_PACKED,
322 .depth = 8,
323 .x_chroma_shift = 0, .y_chroma_shift = 0,
324 },
325 [PIX_FMT_BGR8] = {
326 .name = "bgr8",
327 .nb_channels = 1,
328 .color_type = FF_COLOR_RGB,
329 .pixel_type = FF_PIXEL_PACKED,
330 .depth = 8,
331 .x_chroma_shift = 0, .y_chroma_shift = 0,
332 },
333 [PIX_FMT_BGR4] = {
334 .name = "bgr4",
335 .nb_channels = 1,
336 .color_type = FF_COLOR_RGB,
337 .pixel_type = FF_PIXEL_PACKED,
338 .depth = 4,
339 .x_chroma_shift = 0, .y_chroma_shift = 0,
340 },
341 [PIX_FMT_BGR4_BYTE] = {
342 .name = "bgr4_byte",
343 .nb_channels = 1,
344 .color_type = FF_COLOR_RGB,
345 .pixel_type = FF_PIXEL_PACKED,
346 .depth = 8,
347 .x_chroma_shift = 0, .y_chroma_shift = 0,
348 },
349 [PIX_FMT_NV12] = {
350 .name = "nv12",
351 .nb_channels = 2,
352 .color_type = FF_COLOR_YUV,
353 .pixel_type = FF_PIXEL_PLANAR,
354 .depth = 8,
355 .x_chroma_shift = 1, .y_chroma_shift = 1,
356 },
357 [PIX_FMT_NV21] = {
358 .name = "nv12",
359 .nb_channels = 2,
360 .color_type = FF_COLOR_YUV,
361 .pixel_type = FF_PIXEL_PLANAR,
362 .depth = 8,
363 .x_chroma_shift = 1, .y_chroma_shift = 1,
364 },
365
366 [PIX_FMT_BGR32_1] = {
367 .name = "bgr32_1",
368 .nb_channels = 4, .is_alpha = 1,
369 .color_type = FF_COLOR_RGB,
370 .pixel_type = FF_PIXEL_PACKED,
371 .depth = 8,
372 .x_chroma_shift = 0, .y_chroma_shift = 0,
373 },
374 [PIX_FMT_RGB32_1] = {
375 .name = "rgb32_1",
376 .nb_channels = 4, .is_alpha = 1,
377 .color_type = FF_COLOR_RGB,
378 .pixel_type = FF_PIXEL_PACKED,
379 .depth = 8,
380 .x_chroma_shift = 0, .y_chroma_shift = 0,
381 },
382 };
383
384 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift)
385 {
386 *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
387 *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
388 }
389
390 const char *avcodec_get_pix_fmt_name(int pix_fmt)
391 {
392 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
393 return NULL;
394 else
395 return pix_fmt_info[pix_fmt].name;
396 }
397
398 enum PixelFormat avcodec_get_pix_fmt(const char* name)
399 {
400 int i;
401
402 for (i=0; i < PIX_FMT_NB; i++)
403 if (!strcmp(pix_fmt_info[i].name, name))
404 return i;
405 return PIX_FMT_NONE;
406 }
407
408 void avcodec_pix_fmt_string (char *buf, int buf_size, int pix_fmt)
409 {
410 /* print header */
411 if (pix_fmt < 0)
412 snprintf (buf, buf_size,
413 "name " " nb_channels" " depth" " is_alpha"
414 );
415 else{
416 PixFmtInfo info= pix_fmt_info[pix_fmt];
417
418 char is_alpha_char= info.is_alpha ? 'y' : 'n';
419
420 snprintf (buf, buf_size,
421 "%-10s" " %1d " " %2d " " %c ",
422 info.name,
423 info.nb_channels,
424 info.depth,
425 is_alpha_char
426 );
427 }
428 }
429
430 int ff_fill_linesize(AVPicture *picture, int pix_fmt, int width)
431 {
432 int w2;
433 const PixFmtInfo *pinfo;
434
435 memset(picture->linesize, 0, sizeof(picture->linesize));
436
437 pinfo = &pix_fmt_info[pix_fmt];
438 switch(pix_fmt) {
439 case PIX_FMT_YUV420P:
440 case PIX_FMT_YUV422P:
441 case PIX_FMT_YUV444P:
442 case PIX_FMT_YUV410P:
443 case PIX_FMT_YUV411P:
444 case PIX_FMT_YUV440P:
445 case PIX_FMT_YUVJ420P:
446 case PIX_FMT_YUVJ422P:
447 case PIX_FMT_YUVJ444P:
448 case PIX_FMT_YUVJ440P:
449 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
450 picture->linesize[0] = width;
451 picture->linesize[1] = w2;
452 picture->linesize[2] = w2;
453 break;
454 case PIX_FMT_YUVA420P:
455 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
456 picture->linesize[0] = width;
457 picture->linesize[1] = w2;
458 picture->linesize[2] = w2;
459 picture->linesize[3] = width;
460 break;
461 case PIX_FMT_NV12:
462 case PIX_FMT_NV21:
463 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
464 picture->linesize[0] = width;
465 picture->linesize[1] = w2;
466 break;
467 case PIX_FMT_RGB24:
468 case PIX_FMT_BGR24:
469 picture->linesize[0] = width * 3;
470 break;
471 case PIX_FMT_RGB32:
472 case PIX_FMT_BGR32:
473 case PIX_FMT_RGB32_1:
474 case PIX_FMT_BGR32_1:
475 picture->linesize[0] = width * 4;
476 break;
477 case PIX_FMT_GRAY16BE:
478 case PIX_FMT_GRAY16LE:
479 case PIX_FMT_BGR555:
480 case PIX_FMT_BGR565:
481 case PIX_FMT_RGB555:
482 case PIX_FMT_RGB565:
483 case PIX_FMT_YUYV422:
484 picture->linesize[0] = width * 2;
485 break;
486 case PIX_FMT_UYVY422:
487 picture->linesize[0] = width * 2;
488 break;
489 case PIX_FMT_UYYVYY411:
490 picture->linesize[0] = width + width/2;
491 break;
492 case PIX_FMT_RGB8:
493 case PIX_FMT_BGR8:
494 case PIX_FMT_RGB4_BYTE:
495 case PIX_FMT_BGR4_BYTE:
496 case PIX_FMT_GRAY8:
497 picture->linesize[0] = width;
498 break;
499 case PIX_FMT_RGB4:
500 case PIX_FMT_BGR4:
501 picture->linesize[0] = width / 2;
502 break;
503 case PIX_FMT_MONOWHITE:
504 case PIX_FMT_MONOBLACK:
505 picture->linesize[0] = (width + 7) >> 3;
506 break;
507 case PIX_FMT_PAL8:
508 picture->linesize[0] = width;
509 picture->linesize[1] = 4;
510 break;
511 default:
512 return -1;
513 }
514 return 0;
515 }
516
517 int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, int pix_fmt,
518 int height)
519 {
520 int size, h2, size2;
521 const PixFmtInfo *pinfo;
522
523 pinfo = &pix_fmt_info[pix_fmt];
524 size = picture->linesize[0] * height;
525 switch(pix_fmt) {
526 case PIX_FMT_YUV420P:
527 case PIX_FMT_YUV422P:
528 case PIX_FMT_YUV444P:
529 case PIX_FMT_YUV410P:
530 case PIX_FMT_YUV411P:
531 case PIX_FMT_YUV440P:
532 case PIX_FMT_YUVJ420P:
533 case PIX_FMT_YUVJ422P:
534 case PIX_FMT_YUVJ444P:
535 case PIX_FMT_YUVJ440P:
536 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
537 size2 = picture->linesize[1] * h2;
538 picture->data[0] = ptr;
539 picture->data[1] = picture->data[0] + size;
540 picture->data[2] = picture->data[1] + size2;
541 picture->data[3] = NULL;
542 return size + 2 * size2;
543 case PIX_FMT_YUVA420P:
544 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
545 size2 = picture->linesize[1] * h2;
546 picture->data[0] = ptr;
547 picture->data[1] = picture->data[0] + size;
548 picture->data[2] = picture->data[1] + size2;
549 picture->data[3] = picture->data[1] + size2 + size2;
550 return 2 * size + 2 * size2;
551 case PIX_FMT_NV12:
552 case PIX_FMT_NV21:
553 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
554 size2 = picture->linesize[1] * h2 * 2;
555 picture->data[0] = ptr;
556 picture->data[1] = picture->data[0] + size;
557 picture->data[2] = NULL;
558 picture->data[3] = NULL;
559 return size + 2 * size2;
560 case PIX_FMT_RGB24:
561 case PIX_FMT_BGR24:
562 case PIX_FMT_RGB32:
563 case PIX_FMT_BGR32:
564 case PIX_FMT_RGB32_1:
565 case PIX_FMT_BGR32_1:
566 case PIX_FMT_GRAY16BE:
567 case PIX_FMT_GRAY16LE:
568 case PIX_FMT_BGR555:
569 case PIX_FMT_BGR565:
570 case PIX_FMT_RGB555:
571 case PIX_FMT_RGB565:
572 case PIX_FMT_YUYV422:
573 case PIX_FMT_UYVY422:
574 case PIX_FMT_UYYVYY411:
575 case PIX_FMT_RGB8:
576 case PIX_FMT_BGR8:
577 case PIX_FMT_RGB4_BYTE:
578 case PIX_FMT_BGR4_BYTE:
579 case PIX_FMT_GRAY8:
580 case PIX_FMT_RGB4:
581 case PIX_FMT_BGR4:
582 case PIX_FMT_MONOWHITE:
583 case PIX_FMT_MONOBLACK:
584 picture->data[0] = ptr;
585 picture->data[1] = NULL;
586 picture->data[2] = NULL;
587 picture->data[3] = NULL;
588 return size;
589 case PIX_FMT_PAL8:
590 size2 = (size + 3) & ~3;
591 picture->data[0] = ptr;
592 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
593 picture->data[2] = NULL;
594 picture->data[3] = NULL;
595 return size2 + 256 * 4;
596 default:
597 picture->data[0] = NULL;
598 picture->data[1] = NULL;
599 picture->data[2] = NULL;
600 picture->data[3] = NULL;
601 return -1;
602 }
603 }
604
605 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
606 int pix_fmt, int width, int height)
607 {
608
609 if(avcodec_check_dimensions(NULL, width, height))
610 return -1;
611
612 if (ff_fill_linesize(picture, pix_fmt, width))
613 return -1;
614
615 return ff_fill_pointer(picture, ptr, pix_fmt, height);
616 }
617
618 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
619 unsigned char *dest, int dest_size)
620 {
621 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
622 int i, j, w, h, data_planes;
623 const unsigned char* s;
624 int size = avpicture_get_size(pix_fmt, width, height);
625
626 if (size > dest_size || size < 0)
627 return -1;
628
629 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
630 if (pix_fmt == PIX_FMT_YUYV422 ||
631 pix_fmt == PIX_FMT_UYVY422 ||
632 pix_fmt == PIX_FMT_BGR565 ||
633 pix_fmt == PIX_FMT_BGR555 ||
634 pix_fmt == PIX_FMT_RGB565 ||
635 pix_fmt == PIX_FMT_RGB555)
636 w = width * 2;
637 else if (pix_fmt == PIX_FMT_UYYVYY411)
638 w = width + width/2;
639 else if (pix_fmt == PIX_FMT_PAL8)
640 w = width;
641 else
642 w = width * (pf->depth * pf->nb_channels / 8);
643
644 data_planes = 1;
645 h = height;
646 } else {
647 data_planes = pf->nb_channels;
648 w = (width*pf->depth + 7)/8;
649 h = height;
650 }
651
652 for (i=0; i<data_planes; i++) {
653 if (i == 1) {
654 w = width >> pf->x_chroma_shift;
655 h = height >> pf->y_chroma_shift;
656 }
657 s = src->data[i];
658 for(j=0; j<h; j++) {
659 memcpy(dest, s, w);
660 dest += w;
661 s += src->linesize[i];
662 }
663 }
664
665 if (pf->pixel_type == FF_PIXEL_PALETTE)
666 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
667
668 return size;
669 }
670
671 int avpicture_get_size(int pix_fmt, int width, int height)
672 {
673 AVPicture dummy_pict;
674 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
675 }
676
677 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
678 int has_alpha)
679 {
680 const PixFmtInfo *pf, *ps;
681 int loss;
682
683 ps = &pix_fmt_info[src_pix_fmt];
684 pf = &pix_fmt_info[dst_pix_fmt];
685
686 /* compute loss */
687 loss = 0;
688 pf = &pix_fmt_info[dst_pix_fmt];
689 if (pf->depth < ps->depth ||
690 (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
691 loss |= FF_LOSS_DEPTH;
692 if (pf->x_chroma_shift > ps->x_chroma_shift ||
693 pf->y_chroma_shift > ps->y_chroma_shift)
694 loss |= FF_LOSS_RESOLUTION;
695 switch(pf->color_type) {
696 case FF_COLOR_RGB:
697 if (ps->color_type != FF_COLOR_RGB &&
698 ps->color_type != FF_COLOR_GRAY)
699 loss |= FF_LOSS_COLORSPACE;
700 break;
701 case FF_COLOR_GRAY:
702 if (ps->color_type != FF_COLOR_GRAY)
703 loss |= FF_LOSS_COLORSPACE;
704 break;
705 case FF_COLOR_YUV:
706 if (ps->color_type != FF_COLOR_YUV)
707 loss |= FF_LOSS_COLORSPACE;
708 break;
709 case FF_COLOR_YUV_JPEG:
710 if (ps->color_type != FF_COLOR_YUV_JPEG &&
711 ps->color_type != FF_COLOR_YUV &&
712 ps->color_type != FF_COLOR_GRAY)
713 loss |= FF_LOSS_COLORSPACE;
714 break;
715 default:
716 /* fail safe test */
717 if (ps->color_type != pf->color_type)
718 loss |= FF_LOSS_COLORSPACE;
719 break;
720 }
721 if (pf->color_type == FF_COLOR_GRAY &&
722 ps->color_type != FF_COLOR_GRAY)
723 loss |= FF_LOSS_CHROMA;
724 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
725 loss |= FF_LOSS_ALPHA;
726 if (pf->pixel_type == FF_PIXEL_PALETTE &&
727 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
728 loss |= FF_LOSS_COLORQUANT;
729 return loss;
730 }
731
732 static int avg_bits_per_pixel(int pix_fmt)
733 {
734 int bits;
735 const PixFmtInfo *pf;
736
737 pf = &pix_fmt_info[pix_fmt];
738 switch(pf->pixel_type) {
739 case FF_PIXEL_PACKED:
740 switch(pix_fmt) {
741 case PIX_FMT_YUYV422:
742 case PIX_FMT_UYVY422:
743 case PIX_FMT_RGB565:
744 case PIX_FMT_RGB555:
745 case PIX_FMT_BGR565:
746 case PIX_FMT_BGR555:
747 bits = 16;
748 break;
749 case PIX_FMT_UYYVYY411:
750 bits = 12;
751 break;
752 default:
753 bits = pf->depth * pf->nb_channels;
754 break;
755 }
756 break;
757 case FF_PIXEL_PLANAR:
758 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
759 bits = pf->depth * pf->nb_channels;
760 } else {
761 bits = pf->depth + ((2 * pf->depth) >>
762 (pf->x_chroma_shift + pf->y_chroma_shift));
763 }
764 break;
765 case FF_PIXEL_PALETTE:
766 bits = 8;
767 break;
768 default:
769 bits = -1;
770 break;
771 }
772 return bits;
773 }
774
775 static int avcodec_find_best_pix_fmt1(int pix_fmt_mask,
776 int src_pix_fmt,
777 int has_alpha,
778 int loss_mask)
779 {
780 int dist, i, loss, min_dist, dst_pix_fmt;
781
782 /* find exact color match with smallest size */
783 dst_pix_fmt = -1;
784 min_dist = 0x7fffffff;
785 for(i = 0;i < PIX_FMT_NB; i++) {
786 if (pix_fmt_mask & (1 << i)) {
787 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
788 if (loss == 0) {
789 dist = avg_bits_per_pixel(i);
790 if (dist < min_dist) {
791 min_dist = dist;
792 dst_pix_fmt = i;
793 }
794 }
795 }
796 }
797 return dst_pix_fmt;
798 }
799
800 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
801 int has_alpha, int *loss_ptr)
802 {
803 int dst_pix_fmt, loss_mask, i;
804 static const int loss_mask_order[] = {
805 ~0, /* no loss first */
806 ~FF_LOSS_ALPHA,
807 ~FF_LOSS_RESOLUTION,
808 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
809 ~FF_LOSS_COLORQUANT,
810 ~FF_LOSS_DEPTH,
811 0,
812 };
813
814 /* try with successive loss */
815 i = 0;
816 for(;;) {
817 loss_mask = loss_mask_order[i++];
818 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
819 has_alpha, loss_mask);
820 if (dst_pix_fmt >= 0)
821 goto found;
822 if (loss_mask == 0)
823 break;
824 }
825 return -1;
826 found:
827 if (loss_ptr)
828 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
829 return dst_pix_fmt;
830 }
831
832 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
833 const uint8_t *src, int src_wrap,
834 int width, int height)
835 {
836 if((!dst) || (!src))
837 return;
838 for(;height > 0; height--) {
839 memcpy(dst, src, width);
840 dst += dst_wrap;
841 src += src_wrap;
842 }
843 }
844
845 int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
846 {
847 int bits;
848 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
849
850 pf = &pix_fmt_info[pix_fmt];
851 switch(pf->pixel_type) {
852 case FF_PIXEL_PACKED:
853 switch(pix_fmt) {
854 case PIX_FMT_YUYV422:
855 case PIX_FMT_UYVY422:
856 case PIX_FMT_RGB565:
857 case PIX_FMT_RGB555:
858 case PIX_FMT_BGR565:
859 case PIX_FMT_BGR555:
860 bits = 16;
861 break;
862 case PIX_FMT_UYYVYY411:
863 bits = 12;
864 break;
865 default:
866 bits = pf->depth * pf->nb_channels;
867 break;
868 }
869 return (width * bits + 7) >> 3;
870 break;
871 case FF_PIXEL_PLANAR:
872 if (plane == 1 || plane == 2)
873 width >>= pf->x_chroma_shift;
874
875 return (width * pf->depth + 7) >> 3;
876 break;
877 case FF_PIXEL_PALETTE:
878 if (plane == 0)
879 return width;
880 break;
881 }
882
883 return -1;
884 }
885
886 void av_picture_copy(AVPicture *dst, const AVPicture *src,
887 int pix_fmt, int width, int height)
888 {
889 int i;
890 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
891
892 pf = &pix_fmt_info[pix_fmt];
893 switch(pf->pixel_type) {
894 case FF_PIXEL_PACKED:
895 case FF_PIXEL_PLANAR:
896 for(i = 0; i < pf->nb_channels; i++) {
897 int w, h;
898 int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
899 w = width;
900 h = height;
901 if (i == 1 || i == 2) {
902 w >>= pf->x_chroma_shift;
903 h >>= pf->y_chroma_shift;
904 }
905 ff_img_copy_plane(dst->data[i], dst->linesize[i],
906 src->data[i], src->linesize[i],
907 bwidth, h);
908 }
909 break;
910 case FF_PIXEL_PALETTE:
911 ff_img_copy_plane(dst->data[0], dst->linesize[0],
912 src->data[0], src->linesize[0],
913 width, height);
914 /* copy the palette */
915 ff_img_copy_plane(dst->data[1], dst->linesize[1],
916 src->data[1], src->linesize[1],
917 4, 256);
918 break;
919 }
920 }
921
922 /* XXX: totally non optimized */
923
924 static void yuyv422_to_yuv420p(AVPicture *dst, const AVPicture *src,
925 int width, int height)
926 {
927 const uint8_t *p, *p1;
928 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
929 int w;
930
931 p1 = src->data[0];
932 lum1 = dst->data[0];
933 cb1 = dst->data[1];
934 cr1 = dst->data[2];
935
936 for(;height >= 1; height -= 2) {
937 p = p1;
938 lum = lum1;
939 cb = cb1;
940 cr = cr1;
941 for(w = width; w >= 2; w -= 2) {
942 lum[0] = p[0];
943 cb[0] = p[1];
944 lum[1] = p[2];
945 cr[0] = p[3];
946 p += 4;
947 lum += 2;
948 cb++;
949 cr++;
950 }
951 if (w) {
952 lum[0] = p[0];
953 cb[0] = p[1];
954 cr[0] = p[3];
955 cb++;
956 cr++;
957 }
958 p1 += src->linesize[0];
959 lum1 += dst->linesize[0];
960 if (height>1) {
961 p = p1;
962 lum = lum1;
963 for(w = width; w >= 2; w -= 2) {
964 lum[0] = p[0];
965 lum[1] = p[2];
966 p += 4;
967 lum += 2;
968 }
969 if (w) {
970 lum[0] = p[0];
971 }
972 p1 += src->linesize[0];
973 lum1 += dst->linesize[0];
974 }
975 cb1 += dst->linesize[1];
976 cr1 += dst->linesize[2];
977 }
978 }
979
980 static void uyvy422_to_yuv420p(AVPicture *dst, const AVPicture *src,
981 int width, int height)
982 {
983 const uint8_t *p, *p1;
984 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
985 int w;
986
987 p1 = src->data[0];
988
989 lum1 = dst->data[0];
990 cb1 = dst->data[1];
991 cr1 = dst->data[2];
992
993 for(;height >= 1; height -= 2) {
994 p = p1;
995 lum = lum1;
996 cb = cb1;
997 cr = cr1;
998 for(w = width; w >= 2; w -= 2) {
999 lum[0] = p[1];
1000 cb[0] = p[0];
1001 lum[1] = p[3];
1002 cr[0] = p[2];
1003 p += 4;
1004 lum += 2;
1005 cb++;
1006 cr++;
1007 }
1008 if (w) {
1009 lum[0] = p[1];
1010 cb[0] = p[0];
1011 cr[0] = p[2];
1012 cb++;
1013 cr++;
1014 }
1015 p1 += src->linesize[0];
1016 lum1 += dst->linesize[0];
1017 if (height>1) {
1018 p = p1;
1019 lum = lum1;
1020 for(w = width; w >= 2; w -= 2) {
1021 lum[0] = p[1];
1022 lum[1] = p[3];
1023 p += 4;
1024 lum += 2;
1025 }
1026 if (w) {
1027 lum[0] = p[1];
1028 }
1029 p1 += src->linesize[0];
1030 lum1 += dst->linesize[0];
1031 }
1032 cb1 += dst->linesize[1];
1033 cr1 += dst->linesize[2];
1034 }
1035 }
1036
1037
1038 static void uyvy422_to_yuv422p(AVPicture *dst, const AVPicture *src,
1039 int width, int height)
1040 {
1041 const uint8_t *p, *p1;
1042 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1043 int w;
1044
1045 p1 = src->data[0];
1046 lum1 = dst->data[0];
1047 cb1 = dst->data[1];
1048 cr1 = dst->data[2];
1049 for(;height > 0; height--) {
1050 p = p1;
1051 lum = lum1;
1052 cb = cb1;
1053 cr = cr1;
1054 for(w = width; w >= 2; w -= 2) {
1055 lum[0] = p[1];
1056 cb[0] = p[0];
1057 lum[1] = p[3];
1058 cr[0] = p[2];
1059 p += 4;
1060 lum += 2;
1061 cb++;
1062 cr++;
1063 }
1064 p1 += src->linesize[0];
1065 lum1 += dst->linesize[0];
1066 cb1 += dst->linesize[1];
1067 cr1 += dst->linesize[2];
1068 }
1069 }
1070
1071
1072 static void yuyv422_to_yuv422p(AVPicture *dst, const AVPicture *src,
1073 int width, int height)
1074 {
1075 const uint8_t *p, *p1;
1076 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1077 int w;
1078
1079 p1 = src->data[0];
1080 lum1 = dst->data[0];
1081 cb1 = dst->data[1];
1082 cr1 = dst->data[2];
1083 for(;height > 0; height--) {
1084 p = p1;
1085 lum = lum1;
1086 cb = cb1;
1087 cr = cr1;
1088 for(w = width; w >= 2; w -= 2) {
1089 lum[0] = p[0];
1090 cb[0] = p[1];
1091 lum[1] = p[2];
1092 cr[0] = p[3];
1093 p += 4;
1094 lum += 2;
1095 cb++;
1096 cr++;
1097 }
1098 p1 += src->linesize[0];
1099 lum1 += dst->linesize[0];
1100 cb1 += dst->linesize[1];
1101 cr1 += dst->linesize[2];
1102 }
1103 }
1104
1105 static void yuv422p_to_yuyv422(AVPicture *dst, const AVPicture *src,
1106 int width, int height)
1107 {
1108 uint8_t *p, *p1;
1109 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1110 int w;
1111
1112 p1 = dst->data[0];
1113 lum1 = src->data[0];
1114 cb1 = src->data[1];
1115 cr1 = src->data[2];
1116 for(;height > 0; height--) {
1117 p = p1;
1118 lum = lum1;
1119 cb = cb1;
1120 cr = cr1;
1121 for(w = width; w >= 2; w -= 2) {
1122 p[0] = lum[0];
1123 p[1] = cb[0];
1124 p[2] = lum[1];
1125 p[3] = cr[0];
1126 p += 4;
1127 lum += 2;
1128 cb++;
1129 cr++;
1130 }
1131 p1 += dst->linesize[0];
1132 lum1 += src->linesize[0];
1133 cb1 += src->linesize[1];
1134 cr1 += src->linesize[2];
1135 }
1136 }
1137
1138 static void yuv422p_to_uyvy422(AVPicture *dst, const AVPicture *src,
1139 int width, int height)
1140 {
1141 uint8_t *p, *p1;
1142 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1143 int w;
1144
1145 p1 = dst->data[0];
1146 lum1 = src->data[0];
1147 cb1 = src->data[1];
1148 cr1 = src->data[2];
1149 for(;height > 0; height--) {
1150 p = p1;
1151 lum = lum1;
1152 cb = cb1;
1153 cr = cr1;
1154 for(w = width; w >= 2; w -= 2) {
1155 p[1] = lum[0];
1156 p[0] = cb[0];
1157 p[3] = lum[1];
1158 p[2] = cr[0];
1159 p += 4;
1160 lum += 2;
1161 cb++;
1162 cr++;
1163 }
1164 p1 += dst->linesize[0];
1165 lum1 += src->linesize[0];
1166 cb1 += src->linesize[1];
1167 cr1 += src->linesize[2];
1168 }
1169 }
1170
1171 static void uyyvyy411_to_yuv411p(AVPicture *dst, const AVPicture *src,
1172 int width, int height)
1173 {
1174 const uint8_t *p, *p1;
1175 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1176 int w;
1177
1178 p1 = src->data[0];
1179 lum1 = dst->data[0];
1180 cb1 = dst->data[1];
1181 cr1 = dst->data[2];
1182 for(;height > 0; height--) {
1183 p = p1;
1184 lum = lum1;
1185 cb = cb1;
1186 cr = cr1;
1187 for(w = width; w >= 4; w -= 4) {
1188 cb[0] = p[0];
1189 lum[0] = p[1];
1190 lum[1] = p[2];
1191 cr[0] = p[3];
1192 lum[2] = p[4];
1193 lum[3] = p[5];
1194 p += 6;
1195 lum += 4;
1196 cb++;
1197 cr++;
1198 }
1199 p1 += src->linesize[0];
1200 lum1 += dst->linesize[0];
1201 cb1 += dst->linesize[1];
1202 cr1 += dst->linesize[2];
1203 }
1204 }
1205
1206
1207 static void yuv420p_to_yuyv422(AVPicture *dst, const AVPicture *src,
1208 int width, int height)
1209 {
1210 int w, h;
1211 uint8_t *line1, *line2, *linesrc = dst->data[0];
1212 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
1213 uint8_t *cb1, *cb2 = src->data[1];
1214 uint8_t *cr1, *cr2 = src->data[2];
1215
1216 for(h = height / 2; h--;) {
1217 line1 = linesrc;
1218 line2 = linesrc + dst->linesize[0];
1219
1220 lum1 = lumsrc;
1221 lum2 = lumsrc + src->linesize[0];
1222
1223 cb1 = cb2;
1224 cr1 = cr2;
1225
1226 for(w = width / 2; w--;) {
1227 *line1++ = *lum1++; *line2++ = *lum2++;
1228 *line1++ = *line2++ = *cb1++;
1229 *line1++ = *lum1++; *line2++ = *lum2++;
1230 *line1++ = *line2++ = *cr1++;
1231 }
1232
1233 linesrc += dst->linesize[0] * 2;
1234 lumsrc += src->linesize[0] * 2;
1235 cb2 += src->linesize[1];
1236 cr2 += src->linesize[2];
1237 }
1238 }
1239
1240 static void yuv420p_to_uyvy422(AVPicture *dst, const AVPicture *src,
1241 int width, int height)
1242 {
1243 int w, h;
1244 uint8_t *line1, *line2, *linesrc = dst->data[0];
1245 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
1246 uint8_t *cb1, *cb2 = src->data[1];
1247 uint8_t *cr1, *cr2 = src->data[2];
1248
1249 for(h = height / 2; h--;) {
1250 line1 = linesrc;
1251 line2 = linesrc + dst->linesize[0];
1252
1253 lum1 = lumsrc;
1254 lum2 = lumsrc + src->linesize[0];
1255
1256 cb1 = cb2;
1257 cr1 = cr2;
1258
1259 for(w = width / 2; w--;) {
1260 *line1++ = *line2++ = *cb1++;
1261 *line1++ = *lum1++; *line2++ = *lum2++;
1262 *line1++ = *line2++ = *cr1++;
1263 *line1++ = *lum1++; *line2++ = *lum2++;
1264 }
1265
1266 linesrc += dst->linesize[0] * 2;
1267 lumsrc += src->linesize[0] * 2;
1268 cb2 += src->linesize[1];
1269 cr2 += src->linesize[2];
1270 }
1271 }
1272
1273 /* 2x2 -> 1x1 */
1274 void ff_shrink22(uint8_t *dst, int dst_wrap,
1275 const uint8_t *src, int src_wrap,
1276 int width, int height)
1277 {
1278 int w;
1279 const uint8_t *s1, *s2;
1280 uint8_t *d;
1281
1282 for(;height > 0; height--) {
1283 s1 = src;
1284 s2 = s1 + src_wrap;
1285 d = dst;
1286 for(w = width;w >= 4; w-=4) {
1287 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1288 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1289 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1290 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1291 s1 += 8;
1292 s2 += 8;
1293 d += 4;
1294 }
1295 for(;w > 0; w--) {
1296 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1297 s1 += 2;
1298 s2 += 2;
1299 d++;
1300 }
1301 src += 2 * src_wrap;
1302 dst += dst_wrap;
1303 }
1304 }
1305
1306 /* 4x4 -> 1x1 */
1307 void ff_shrink44(uint8_t *dst, int dst_wrap,
1308 const uint8_t *src, int src_wrap,
1309 int width, int height)
1310 {
1311 int w;
1312 const uint8_t *s1, *s2, *s3, *s4;
1313 uint8_t *d;
1314
1315 for(;height > 0; height--) {
1316 s1 = src;
1317 s2 = s1 + src_wrap;
1318 s3 = s2 + src_wrap;
1319 s4 = s3 + src_wrap;
1320 d = dst;
1321 for(w = width;w > 0; w--) {
1322 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1323 s2[0] + s2[1] + s2[2] + s2[3] +
1324 s3[0] + s3[1] + s3[2] + s3[3] +
1325 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1326 s1 += 4;
1327 s2 += 4;
1328 s3 += 4;
1329 s4 += 4;
1330 d++;
1331 }
1332 src += 4 * src_wrap;
1333 dst += dst_wrap;
1334 }
1335 }
1336
1337 /* 8x8 -> 1x1 */
1338 void ff_shrink88(uint8_t *dst, int dst_wrap,
1339 const uint8_t *src, int src_wrap,
1340 int width, int height)
1341 {
1342 int w, i;
1343
1344 for(;height > 0; height--) {
1345 for(w = width;w > 0; w--) {
1346 int tmp=0;
1347 for(i=0; i<8; i++){
1348 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1349 src += src_wrap;
1350 }
1351 *(dst++) = (tmp + 32)>>6;
1352 src += 8 - 8*src_wrap;
1353 }
1354 src += 8*src_wrap - 8*width;
1355 dst += dst_wrap - width;
1356 }
1357 }
1358
1359 /* XXX: add jpeg quantize code */
1360
1361 #define TRANSP_INDEX (6*6*6)
1362
1363 /* this is maybe slow, but allows for extensions */
1364 static inline unsigned char gif_clut_index(uint8_t r, uint8_t g, uint8_t b)
1365 {
1366 return (((r) / 47) % 6) * 6 * 6 + (((g) / 47) % 6) * 6 + (((b) / 47) % 6);
1367 }
1368
1369 static void build_rgb_palette(uint8_t *palette, int has_alpha)
1370 {
1371 uint32_t *pal;
1372 static const uint8_t pal_value[6] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
1373 int i, r, g, b;
1374
1375 pal = (uint32_t *)palette;
1376 i = 0;
1377 for(r = 0; r < 6; r++) {
1378 for(g = 0; g < 6; g++) {
1379 for(b = 0; b < 6; b++) {
1380 pal[i++] = (0xff << 24) | (pal_value[r] << 16) |
1381 (pal_value[g] << 8) | pal_value[b];
1382 }
1383 }
1384 }
1385 if (has_alpha)
1386 pal[i++] = 0;
1387 while (i < 256)
1388 pal[i++] = 0xff000000;
1389 }
1390
1391 /* copy bit n to bits 0 ... n - 1 */
1392 static inline unsigned int bitcopy_n(unsigned int a, int n)
1393 {
1394 int mask;
1395 mask = (1 << n) - 1;
1396 return (a & (0xff & ~mask)) | ((-((a >> n) & 1)) & mask);
1397 }
1398
1399 /* rgb555 handling */
1400
1401 #define RGB_NAME rgb555
1402
1403 #define RGB_IN(r, g, b, s)\
1404 {\
1405 unsigned int v = ((const uint16_t *)(s))[0];\
1406 r = bitcopy_n(v >> (10 - 3), 3);\
1407 g = bitcopy_n(v >> (5 - 3), 3);\
1408 b = bitcopy_n(v << 3, 3);\
1409 }
1410
1411
1412 #define RGB_OUT(d, r, g, b)\
1413 {\
1414 ((uint16_t *)(d))[0] = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);\
1415 }
1416
1417 #define BPP 2
1418
1419 #include "imgconvert_template.h"
1420
1421 /* rgb565 handling */
1422
1423 #define RGB_NAME rgb565
1424
1425 #define RGB_IN(r, g, b, s)\
1426 {\
1427 unsigned int v = ((const uint16_t *)(s))[0];\
1428 r = bitcopy_n(v >> (11 - 3), 3);\
1429 g = bitcopy_n(v >> (5 - 2), 2);\
1430 b = bitcopy_n(v << 3, 3);\
1431 }
1432
1433 #define RGB_OUT(d, r, g, b)\
1434 {\
1435 ((uint16_t *)(d))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);\
1436 }
1437
1438 #define BPP 2
1439
1440 #include "imgconvert_template.h"
1441
1442 /* bgr24 handling */
1443
1444 #define RGB_NAME bgr24
1445
1446 #define RGB_IN(r, g, b, s)\
1447 {\
1448 b = (s)[0];\
1449 g = (s)[1];\
1450 r = (s)[2];\
1451 }
1452
1453 #define RGB_OUT(d, r, g, b)\
1454 {\
1455 (d)[0] = b;\
1456 (d)[1] = g;\
1457 (d)[2] = r;\
1458 }
1459
1460 #define BPP 3
1461
1462 #include "imgconvert_template.h"
1463
1464 #undef RGB_IN
1465 #undef RGB_OUT
1466 #undef BPP
1467
1468 /* rgb24 handling */
1469
1470 #define RGB_NAME rgb24
1471 #define FMT_RGB24
1472
1473 #define RGB_IN(r, g, b, s)\
1474 {\
1475 r = (s)[0];\
1476 g = (s)[1];\
1477 b = (s)[2];\
1478 }
1479
1480 #define RGB_OUT(d, r, g, b)\
1481 {\
1482 (d)[0] = r;\
1483 (d)[1] = g;\
1484 (d)[2] = b;\
1485 }
1486
1487 #define BPP 3
1488
1489 #include "imgconvert_template.h"
1490
1491 /* rgb32 handling */
1492
1493 #define RGB_NAME rgb32
1494 #define FMT_RGB32
1495
1496 #define RGB_IN(r, g, b, s)\
1497 {\
1498 unsigned int v = ((const uint32_t *)(s))[0];\
1499 r = (v >> 16) & 0xff;\
1500 g = (v >> 8) & 0xff;\
1501 b = v & 0xff;\
1502 }
1503
1504 #define RGBA_IN(r, g, b, a, s)\
1505 {\
1506 unsigned int v = ((const uint32_t *)(s))[0];\
1507 a = (v >> 24) & 0xff;\
1508 r = (v >> 16) & 0xff;\
1509 g = (v >> 8) & 0xff;\
1510 b = v & 0xff;\
1511 }
1512
1513 #define RGBA_OUT(d, r, g, b, a)\
1514 {\
1515 ((uint32_t *)(d))[0] = (a << 24) | (r << 16) | (g << 8) | b;\
1516 }
1517
1518 #define BPP 4
1519
1520 #include "imgconvert_template.h"
1521
1522 static void mono_to_gray(AVPicture *dst, const AVPicture *src,
1523 int width, int height, int xor_mask)
1524 {
1525 const unsigned char *p;
1526 unsigned char *q;
1527 int v, dst_wrap, src_wrap;
1528 int y, w;
1529
1530 p = src->data[0];
1531 src_wrap = src->linesize[0] - ((width + 7) >> 3);
1532
1533 q = dst->data[0];
1534 dst_wrap = dst->linesize[0] - width;
1535 for(y=0;y<height;y++) {
1536 w = width;
1537 while (w >= 8) {
1538 v = *p++ ^ xor_mask;
1539 q[0] = -(v >> 7);
1540 q[1] = -((v >> 6) & 1);
1541 q[2] = -((v >> 5) & 1);
1542 q[3] = -((v >> 4) & 1);
1543 q[4] = -((v >> 3) & 1);
1544 q[5] = -((v >> 2) & 1);
1545 q[6] = -((v >> 1) & 1);
1546 q[7] = -((v >> 0) & 1);
1547 w -= 8;
1548 q += 8;
1549 }
1550 if (w > 0) {
1551 v = *p++ ^ xor_mask;
1552 do {
1553 q[0] = -((v >> 7) & 1);
1554 q++;
1555 v <<= 1;
1556 } while (--w);
1557 }
1558 p += src_wrap;
1559 q += dst_wrap;
1560 }
1561 }
1562
1563 static void monowhite_to_gray(AVPicture *dst, const AVPicture *src,
1564 int width, int height)
1565 {
1566 mono_to_gray(dst, src, width, height, 0xff);
1567 }
1568
1569 static void monoblack_to_gray(AVPicture *dst, const AVPicture *src,
1570 int width, int height)
1571 {
1572 mono_to_gray(dst, src, width, height, 0x00);
1573 }
1574
1575 static void gray_to_mono(AVPicture *dst, const AVPicture *src,
1576 int width, int height, int xor_mask)
1577 {
1578 int n;
1579 const uint8_t *s;
1580 uint8_t *d;
1581 int j, b, v, n1, src_wrap, dst_wrap, y;
1582
1583 s = src->data[0];
1584 src_wrap = src->linesize[0] - width;
1585
1586 d = dst->data[0];
1587 dst_wrap = dst->linesize[0] - ((width + 7) >> 3);
1588
1589 for(y=0;y<height;y++) {
1590 n = width;
1591 while (n >= 8) {
1592 v = 0;
1593 for(j=0;j<8;j++) {
1594 b = s[0];
1595 s++;
1596 v = (v << 1) | (b >> 7);
1597 }
1598 d[0] = v ^ xor_mask;
1599 d++;
1600 n -= 8;
1601 }
1602 if (n > 0) {
1603 n1 = n;
1604 v = 0;
1605 while (n > 0) {
1606 b = s[0];
1607 s++;
1608 v = (v << 1) | (b >> 7);
1609 n--;
1610 }
1611 d[0] = (v << (8 - (n1 & 7))) ^ xor_mask;
1612 d++;
1613 }
1614 s += src_wrap;
1615 d += dst_wrap;
1616 }
1617 }
1618
1619 static void gray_to_monowhite(AVPicture *dst, const AVPicture *src,
1620 int width, int height)
1621 {
1622 gray_to_mono(dst, src, width, height, 0xff);
1623 }
1624
1625 static void gray_to_monoblack(AVPicture *dst, const AVPicture *src,
1626 int width, int height)
1627 {
1628 gray_to_mono(dst, src, width, height, 0x00);
1629 }
1630
1631 static void gray_to_gray16(AVPicture *dst, const AVPicture *src,
1632 int width, int height)
1633 {
1634 int x, y, src_wrap, dst_wrap;
1635 uint8_t *s, *d;
1636 s = src->data[0];
1637 src_wrap = src->linesize[0] - width;
1638 d = dst->data[0];
1639 dst_wrap = dst->linesize[0] - width * 2;
1640 for(y=0; y<height; y++){
1641 for(x=0; x<width; x++){
1642 *d++ = *s;
1643 *d++ = *s++;
1644 }
1645 s += src_wrap;
1646 d += dst_wrap;
1647 }
1648 }
1649
1650 static void gray16_to_gray(AVPicture *dst, const AVPicture *src,
1651 int width, int height)
1652 {
1653 int x, y, src_wrap, dst_wrap;
1654 uint8_t *s, *d;
1655 s = src->data[0];
1656 src_wrap = src->linesize[0] - width * 2;
1657 d = dst->data[0];
1658 dst_wrap = dst->linesize[0] - width;
1659 for(y=0; y<height; y++){
1660 for(x=0; x<width; x++){
1661 *d++ = *s;
1662 s += 2;
1663 }
1664 s += src_wrap;
1665 d += dst_wrap;
1666 }
1667 }
1668
1669 static void gray16be_to_gray(AVPicture *dst, const AVPicture *src,
1670 int width, int height)
1671 {
1672 gray16_to_gray(dst, src, width, height);
1673 }
1674
1675 static void gray16le_to_gray(AVPicture *dst, const AVPicture *src,
1676 int width, int height)
1677 {
1678 AVPicture tmpsrc = *src;
1679 tmpsrc.data[0]++;
1680 gray16_to_gray(dst, &tmpsrc, width, height);
1681 }
1682
1683 static void gray16_to_gray16(AVPicture *dst, const AVPicture *src,
1684 int width, int height)
1685 {
1686 int x, y, src_wrap, dst_wrap;
1687 uint16_t *s, *d;
1688 s = (uint16_t*)src->data[0];
1689 src_wrap = (src->linesize[0] - width * 2)/2;
1690 d = (uint16_t*)dst->data[0];
1691 dst_wrap = (dst->linesize[0] - width * 2)/2;
1692 for(y=0; y<height; y++){
1693 for(x=0; x<width; x++){
1694 *d++ = bswap_16(*s++);
1695 }
1696 s += src_wrap;
1697 d += dst_wrap;
1698 }
1699 }
1700
1701
1702 typedef struct ConvertEntry {
1703 void (*convert)(AVPicture *dst,
1704 const AVPicture *src, int width, int height);
1705 } ConvertEntry;
1706
1707 /* Add each new conversion function in this table. In order to be able
1708 to convert from any format to any format, the following constraints
1709 must be satisfied:
1710
1711 - all FF_COLOR_RGB formats must convert to and from PIX_FMT_RGB24
1712
1713 - all FF_COLOR_GRAY formats must convert to and from PIX_FMT_GRAY8
1714
1715 - all FF_COLOR_RGB formats with alpha must convert to and from PIX_FMT_RGB32
1716
1717 - PIX_FMT_YUV444P and PIX_FMT_YUVJ444P must convert to and from
1718 PIX_FMT_RGB24.
1719
1720 - PIX_FMT_422 must convert to and from PIX_FMT_422P.
1721
1722 The other conversion functions are just optimizations for common cases.
1723 */
1724 static const ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
1725 [PIX_FMT_YUV420P] = {
1726 [PIX_FMT_YUYV422] = {
1727 .convert = yuv420p_to_yuyv422,
1728 },
1729 [PIX_FMT_RGB555] = {
1730 .convert = yuv420p_to_rgb555
1731 },
1732 [PIX_FMT_RGB565] = {
1733 .convert = yuv420p_to_rgb565
1734 },
1735 [PIX_FMT_BGR24] = {
1736 .convert = yuv420p_to_bgr24
1737 },
1738 [PIX_FMT_RGB24] = {
1739 .convert = yuv420p_to_rgb24
1740 },
1741 [PIX_FMT_RGB32] = {
1742 .convert = yuv420p_to_rgb32
1743 },
1744 [PIX_FMT_UYVY422] = {
1745 .convert = yuv420p_to_uyvy422,
1746 },
1747 },
1748 [PIX_FMT_YUV422P] = {
1749 [PIX_FMT_YUYV422] = {
1750 .convert = yuv422p_to_yuyv422,
1751 },
1752 [PIX_FMT_UYVY422] = {
1753 .convert = yuv422p_to_uyvy422,
1754 },
1755 },
1756 [PIX_FMT_YUV444P] = {
1757 [PIX_FMT_RGB24] = {
1758 .convert = yuv444p_to_rgb24
1759 },
1760 },
1761 [PIX_FMT_YUVJ420P] = {
1762 [PIX_FMT_RGB555] = {
1763 .convert = yuvj420p_to_rgb555
1764 },
1765 [PIX_FMT_RGB565] = {
1766 .convert = yuvj420p_to_rgb565
1767 },
1768 [PIX_FMT_BGR24] = {
1769 .convert = yuvj420p_to_bgr24
1770 },
1771 [PIX_FMT_RGB24] = {
1772 .convert = yuvj420p_to_rgb24
1773 },
1774 [PIX_FMT_RGB32] = {
1775 .convert = yuvj420p_to_rgb32
1776 },
1777 },
1778 [PIX_FMT_YUVJ444P] = {
1779 [PIX_FMT_RGB24] = {
1780 .convert = yuvj444p_to_rgb24
1781 },
1782 },
1783 [PIX_FMT_YUYV422] = {
1784 [PIX_FMT_YUV420P] = {
1785 .convert = yuyv422_to_yuv420p,
1786 },
1787 [PIX_FMT_YUV422P] = {
1788 .convert = yuyv422_to_yuv422p,
1789 },
1790 },
1791 [PIX_FMT_UYVY422] = {
1792 [PIX_FMT_YUV420P] = {
1793 .convert = uyvy422_to_yuv420p,
1794 },
1795 [PIX_FMT_YUV422P] = {
1796 .convert = uyvy422_to_yuv422p,
1797 },
1798 },
1799 [PIX_FMT_RGB24] = {
1800 [PIX_FMT_YUV420P] = {
1801 .convert = rgb24_to_yuv420p
1802 },
1803 [PIX_FMT_RGB565] = {
1804 .convert = rgb24_to_rgb565
1805 },
1806 [PIX_FMT_RGB555] = {
1807 .convert = rgb24_to_rgb555
1808 },
1809 [PIX_FMT_RGB32] = {
1810 .convert = rgb24_to_rgb32
1811 },
1812 [PIX_FMT_BGR24] = {
1813 .convert = rgb24_to_bgr24
1814 },
1815 [PIX_FMT_GRAY8] = {
1816 .convert = rgb24_to_gray
1817 },
1818 [PIX_FMT_PAL8] = {
1819 .convert = rgb24_to_pal8
1820 },
1821 [PIX_FMT_YUV444P] = {
1822 .convert = rgb24_to_yuv444p
1823 },
1824 [PIX_FMT_YUVJ420P] = {
1825 .convert = rgb24_to_yuvj420p
1826 },
1827 [PIX_FMT_YUVJ444P] = {
1828 .convert = rgb24_to_yuvj444p
1829 },
1830 },
1831 [PIX_FMT_RGB32] = {
1832 [PIX_FMT_RGB24] = {
1833 .convert = rgb32_to_rgb24
1834 },
1835 [PIX_FMT_BGR24] = {
1836 .convert = rgb32_to_bgr24
1837 },
1838 [PIX_FMT_RGB565] = {
1839 .convert = rgb32_to_rgb565
1840 },
1841 [PIX_FMT_RGB555] = {
1842 .convert = rgb32_to_rgb555
1843 },
1844 [PIX_FMT_PAL8] = {
1845 .convert = rgb32_to_pal8
1846 },
1847 [PIX_FMT_YUV420P] = {
1848 .convert = rgb32_to_yuv420p
1849 },
1850 [PIX_FMT_GRAY8] = {
1851 .convert = rgb32_to_gray
1852 },
1853 },
1854 [PIX_FMT_BGR24] = {
1855 [PIX_FMT_RGB32] = {
1856 .convert = bgr24_to_rgb32
1857 },
1858 [PIX_FMT_RGB24] = {
1859 .convert = bgr24_to_rgb24
1860 },
1861 [PIX_FMT_YUV420P] = {
1862 .convert = bgr24_to_yuv420p
1863 },
1864 [PIX_FMT_GRAY8] = {
1865 .convert = bgr24_to_gray
1866 },
1867 },
1868 [PIX_FMT_RGB555] = {
1869 [PIX_FMT_RGB24] = {
1870 .convert = rgb555_to_rgb24
1871 },
1872 [PIX_FMT_RGB32] = {
1873 .convert = rgb555_to_rgb32
1874 },
1875 [PIX_FMT_YUV420P] = {
1876 .convert = rgb555_to_yuv420p
1877 },
1878 [PIX_FMT_GRAY8] = {
1879 .convert = rgb555_to_gray
1880 },
1881 },
1882 [PIX_FMT_RGB565] = {
1883 [PIX_FMT_RGB32] = {
1884 .convert = rgb565_to_rgb32
1885 },
1886 [PIX_FMT_RGB24] = {
1887 .convert = rgb565_to_rgb24
1888 },
1889 [PIX_FMT_YUV420P] = {
1890 .convert = rgb565_to_yuv420p
1891 },
1892 [PIX_FMT_GRAY8] = {
1893 .convert = rgb565_to_gray
1894 },
1895 },
1896 [PIX_FMT_GRAY16BE] = {
1897 [PIX_FMT_GRAY8] = {
1898 .convert = gray16be_to_gray
1899 },
1900 [PIX_FMT_GRAY16LE] = {
1901 .convert = gray16_to_gray16
1902 },
1903 },
1904 [PIX_FMT_GRAY16LE] = {
1905 [PIX_FMT_GRAY8] = {
1906 .convert = gray16le_to_gray
1907 },
1908 [PIX_FMT_GRAY16BE] = {
1909 .convert = gray16_to_gray16
1910 },
1911 },
1912 [PIX_FMT_GRAY8] = {
1913 [PIX_FMT_RGB555] = {
1914 .convert = gray_to_rgb555
1915 },
1916 [PIX_FMT_RGB565] = {
1917 .convert = gray_to_rgb565
1918 },
1919 [PIX_FMT_RGB24] = {
1920 .convert = gray_to_rgb24
1921 },
1922 [PIX_FMT_BGR24] = {
1923 .convert = gray_to_bgr24
1924 },
1925 [PIX_FMT_RGB32] = {
1926 .convert = gray_to_rgb32
1927 },
1928 [PIX_FMT_MONOWHITE] = {
1929 .convert = gray_to_monowhite
1930 },
1931 [PIX_FMT_MONOBLACK] = {
1932 .convert = gray_to_monoblack
1933 },
1934 [PIX_FMT_GRAY16LE] = {
1935 .convert = gray_to_gray16
1936 },
1937 [PIX_FMT_GRAY16BE] = {
1938 .convert = gray_to_gray16
1939 },
1940 },
1941 [PIX_FMT_MONOWHITE] = {
1942 [PIX_FMT_GRAY8] = {
1943 .convert = monowhite_to_gray
1944 },
1945 },
1946 [PIX_FMT_MONOBLACK] = {
1947 [PIX_FMT_GRAY8] = {
1948 .convert = monoblack_to_gray
1949 },
1950 },
1951 [PIX_FMT_PAL8] = {
1952 [PIX_FMT_RGB555] = {
1953 .convert = pal8_to_rgb555
1954 },
1955 [PIX_FMT_RGB565] = {
1956 .convert = pal8_to_rgb565
1957 },
1958 [PIX_FMT_BGR24] = {
1959 .convert = pal8_to_bgr24
1960 },
1961 [PIX_FMT_RGB24] = {
1962 .convert = pal8_to_rgb24
1963 },
1964 [PIX_FMT_RGB32] = {
1965 .convert = pal8_to_rgb32
1966 },
1967 },
1968 [PIX_FMT_UYYVYY411] = {
1969 [PIX_FMT_YUV411P] = {
1970 .convert = uyyvyy411_to_yuv411p,
1971 },
1972 },
1973
1974 };
1975
1976 int avpicture_alloc(AVPicture *picture,
1977 int pix_fmt, int width, int height)
1978 {
1979 int size;
1980 void *ptr;
1981
1982 size = avpicture_get_size(pix_fmt, width, height);
1983 if(size<0)
1984 goto fail;
1985 ptr = av_malloc(size);
1986 if (!ptr)
1987 goto fail;
1988 avpicture_fill(picture, ptr, pix_fmt, width, height);
1989 return 0;
1990 fail:
1991 memset(picture, 0, sizeof(AVPicture));
1992 return -1;
1993 }
1994
1995 void avpicture_free(AVPicture *picture)
1996 {
1997 av_free(picture->data[0]);
1998 }
1999
2000 /* return true if yuv planar */
2001 static inline int is_yuv_planar(const PixFmtInfo *ps)
2002 {
2003 return (ps->color_type == FF_COLOR_YUV ||
2004 ps->color_type == FF_COLOR_YUV_JPEG) &&
2005 ps->pixel_type == FF_PIXEL_PLANAR;
2006 }
2007
2008 int av_picture_crop(AVPicture *dst, const AVPicture *src,
2009 int pix_fmt, int top_band, int left_band)
2010 {
2011 int y_shift;
2012 int x_shift;
2013
2014 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
2015 return -1;
2016
2017 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
2018 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
2019
2020 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
2021 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
2022 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
2023
2024 dst->linesize[0] = src->linesize[0];
2025 dst->linesize[1] = src->linesize[1];
2026 dst->linesize[2] = src->linesize[2];
2027 return 0;
2028 }
2029
2030 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
2031 int pix_fmt, int padtop, int padbottom, int padleft, int padright,
2032 int *color)
2033 {
2034 uint8_t *optr;
2035 int y_shift;
2036 int x_shift;
2037 int yheight;
2038 int i, y;
2039
2040 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
2041 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
2042
2043 for (i = 0; i < 3; i++) {
2044 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
2045 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
2046
2047 if (padtop || padleft) {
2048 memset(dst->data[i], color[i],
2049 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
2050 }
2051
2052 if (padleft || padright) {
2053 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2054 (dst->linesize[i] - (padright >> x_shift));
2055 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
2056 for (y = 0; y < yheight; y++) {
2057 memset(optr, color[i], (padleft + padright) >> x_shift);
2058 optr += dst->linesize[i];
2059 }
2060 }
2061
2062 if (src) { /* first line */
2063 uint8_t *iptr = src->data[i];
2064 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2065 (padleft >> x_shift);
2066 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
2067 iptr += src->linesize[i];
2068 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2069 (dst->linesize[i] - (padright >> x_shift));
2070 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
2071 for (y = 0; y < yheight; y++) {
2072 memset(optr, color[i], (padleft + padright) >> x_shift);
2073 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
2074 (width - padleft - padright) >> x_shift);
2075 iptr += src->linesize[i];
2076 optr += dst->linesize[i];
2077 }
2078 }
2079
2080 if (padbottom || padright) {
2081 optr = dst->data[i] + dst->linesize[i] *
2082 ((height - padbottom) >> y_shift) - (padright >> x_shift);
2083 memset(optr, color[i],dst->linesize[i] *
2084 (padbottom >> y_shift) + (padright >> x_shift));
2085 }
2086 }
2087 return 0;
2088 }
2089
2090 #ifndef CONFIG_SWSCALE
2091 static uint8_t y_ccir_to_jpeg[256];
2092 static uint8_t y_jpeg_to_ccir[256];
2093 static uint8_t c_ccir_to_jpeg[256];
2094 static uint8_t c_jpeg_to_ccir[256];
2095
2096 /* init various conversion tables */
2097 static void img_convert_init(void)
2098 {
2099 int i;
2100 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2101
2102 for(i = 0;i < 256; i++) {
2103 y_ccir_to_jpeg[i] = Y_CCIR_TO_JPEG(i);
2104 y_jpeg_to_ccir[i] = Y_JPEG_TO_CCIR(i);
2105 c_ccir_to_jpeg[i] = C_CCIR_TO_JPEG(i);
2106 c_jpeg_to_ccir[i] = C_JPEG_TO_CCIR(i);
2107 }
2108 }
2109
2110 /* apply to each pixel the given table */
2111 static void img_apply_table(uint8_t *dst, int dst_wrap,
2112 const uint8_t *src, int src_wrap,
2113 int width, int height, const uint8_t *table1)
2114 {
2115 int n;
2116 const uint8_t *s;
2117 uint8_t *d;
2118 const uint8_t *table;
2119
2120 table = table1;
2121 for(;height > 0; height--) {
2122 s = src;
2123 d = dst;
2124 n = width;
2125 while (n >= 4) {
2126 d[0] = table[s[0]];
2127 d[1] = table[s[1]];
2128 d[2] = table[s[2]];
2129 d[3] = table[s[3]];
2130 d += 4;
2131 s += 4;
2132 n -= 4;
2133 }
2134 while (n > 0) {
2135 d[0] = table[s[0]];
2136 d++;
2137 s++;
2138 n--;
2139 }
2140 dst += dst_wrap;
2141 src += src_wrap;
2142 }
2143 }
2144
2145 /* XXX: use generic filter ? */
2146 /* XXX: in most cases, the sampling position is incorrect */
2147
2148 /* 4x1 -> 1x1 */
2149 static void shrink41(uint8_t *dst, int dst_wrap,
2150 const uint8_t *src, int src_wrap,
2151 int width, int height)
2152 {
2153 int w;
2154 const uint8_t *s;
2155 uint8_t *d;
2156
2157 for(;height > 0; height--) {
2158 s = src;
2159 d = dst;
2160 for(w = width;w > 0; w--) {
2161 d[0] = (s[0] + s[1] + s[2] + s[3] + 2) >> 2;
2162 s += 4;
2163 d++;
2164 }
2165 src += src_wrap;
2166 dst += dst_wrap;
2167 }
2168 }
2169
2170 /* 2x1 -> 1x1 */
2171 static void shrink21(uint8_t *dst, int dst_wrap,
2172 const uint8_t *src, int src_wrap,
2173 int width, int height)
2174 {
2175 int w;
2176 const uint8_t *s;
2177 uint8_t *d;
2178
2179 for(;height > 0; height--) {
2180 s = src;
2181 d = dst;
2182 for(w = width;w > 0; w--) {
2183 d[0] = (s[0] + s[1]) >> 1;
2184 s += 2;
2185 d++;
2186 }
2187 src += src_wrap;
2188 dst += dst_wrap;
2189 }
2190 }
2191
2192 /* 1x2 -> 1x1 */
2193 static void shrink12(uint8_t *dst, int dst_wrap,
2194 const uint8_t *src, int src_wrap,
2195 int width, int height)
2196 {
2197 int w;
2198 uint8_t *d;
2199 const uint8_t *s1, *s2;
2200
2201 for(;height > 0; height--) {
2202 s1 = src;
2203 s2 = s1 + src_wrap;
2204 d = dst;
2205 for(w = width;w >= 4; w-=4) {
2206 d[0] = (s1[0] + s2[0]) >> 1;
2207 d[1] = (s1[1] + s2[1]) >> 1;
2208 d[2] = (s1[2] + s2[2]) >> 1;
2209 d[3] = (s1[3] + s2[3]) >> 1;
2210 s1 += 4;
2211 s2 += 4;
2212 d += 4;
2213 }
2214 for(;w > 0; w--) {
2215 d[0] = (s1[0] + s2[0]) >> 1;
2216 s1++;
2217 s2++;
2218 d++;
2219 }
2220 src += 2 * src_wrap;
2221 dst += dst_wrap;
2222 }
2223 }
2224
2225 static void grow21_line(uint8_t *dst, const uint8_t *src,
2226 int width)
2227 {
2228 int w;
2229 const uint8_t *s1;
2230 uint8_t *d;
2231
2232 s1 = src;
2233 d = dst;
2234 for(w = width;w >= 4; w-=4) {
2235 d[1] = d[0] = s1[0];
2236 d[3] = d[2] = s1[1];
2237 s1 += 2;
2238 d += 4;
2239 }
2240 for(;w >= 2; w -= 2) {
2241 d[1] = d[0] = s1[0];
2242 s1 ++;
2243 d += 2;
2244 }
2245 /* only needed if width is not a multiple of two */
2246 /* XXX: veryfy that */
2247 if (w) {
2248 d[0] = s1[0];
2249 }
2250 }
2251
2252 static void grow41_line(uint8_t *dst, const uint8_t *src,
2253 int width)
2254 {
2255 int w, v;
2256 const uint8_t *s1;
2257 uint8_t *d;
2258
2259 s1 = src;
2260 d = dst;
2261 for(w = width;w >= 4; w-=4) {
2262 v = s1[0];
2263 d[0] = v;
2264 d[1] = v;
2265 d[2] = v;
2266 d[3] = v;
2267 s1 ++;
2268 d += 4;
2269 }
2270 }
2271
2272 /* 1x1 -> 2x1 */
2273 static void grow21(uint8_t *dst, int dst_wrap,
2274 const uint8_t *src, int src_wrap,
2275 int width, int height)
2276 {
2277 for(;height > 0; height--) {
2278 grow21_line(dst, src, width);
2279 src += src_wrap;
2280 dst += dst_wrap;
2281 }
2282 }
2283
2284 /* 1x1 -> 1x2 */
2285 static void grow12(uint8_t *dst, int dst_wrap,
2286 const uint8_t *src, int src_wrap,
2287 int width, int height)
2288 {
2289 for(;height > 0; height-=2) {
2290 memcpy(dst, src, width);
2291 dst += dst_wrap;
2292 memcpy(dst, src, width);
2293 dst += dst_wrap;
2294 src += src_wrap;
2295 }
2296 }
2297
2298 /* 1x1 -> 2x2 */
2299 static void grow22(uint8_t *dst, int dst_wrap,
2300 const uint8_t *src, int src_wrap,
2301 int width, int height)
2302 {
2303 for(;height > 0; height--) {
2304 grow21_line(dst, src, width);
2305 if (height%2)
2306 src += src_wrap;
2307 dst += dst_wrap;
2308 }
2309 }
2310
2311 /* 1x1 -> 4x1 */
2312 static void grow41(uint8_t *dst, int dst_wrap,
2313 const uint8_t *src, int src_wrap,
2314 int width, int height)
2315 {
2316 for(;height > 0; height--) {
2317 grow41_line(dst, src, width);
2318 src += src_wrap;
2319 dst += dst_wrap;
2320 }
2321 }
2322
2323 /* 1x1 -> 4x4 */
2324 static void grow44(uint8_t *dst, int dst_wrap,
2325 const uint8_t *src, int src_wrap,
2326 int width, int height)
2327 {
2328 for(;height > 0; height--) {
2329 grow41_line(dst, src, width);
2330 if ((height & 3) == 1)
2331 src += src_wrap;
2332 dst += dst_wrap;
2333 }
2334 }
2335
2336 /* 1x2 -> 2x1 */
2337 static void conv411(uint8_t *dst, int dst_wrap,
2338 const uint8_t *src, int src_wrap,
2339 int width, int height)
2340 {
2341 int w, c;
2342 const uint8_t *s1, *s2;
2343 uint8_t *d;
2344
2345 width>>=1;
2346
2347 for(;height > 0; height--) {
2348 s1 = src;
2349 s2 = src + src_wrap;
2350 d = dst;
2351 for(w = width;w > 0; w--) {
2352 c = (s1[0] + s2[0]) >> 1;
2353 d[0] = c;
2354 d[1] = c;
2355 s1++;
2356 s2++;
2357 d += 2;
2358 }
2359 src += src_wrap * 2;
2360 dst += dst_wrap;
2361 }
2362 }
2363
2364 /* XXX: always use linesize. Return -1 if not supported */
2365 int img_convert(AVPicture *dst, int dst_pix_fmt,
2366 const AVPicture *src, int src_pix_fmt,
2367 int src_width, int src_height)
2368 {
2369 static int initialized;
2370 int i, ret, dst_width, dst_height, int_pix_fmt;
2371 const PixFmtInfo *src_pix, *dst_pix;
2372 const ConvertEntry *ce;
2373 AVPicture tmp1, *tmp = &tmp1;
2374
2375 if (src_pix_fmt < 0 || src_pix_fmt >= PIX_FMT_NB ||
2376 dst_pix_fmt < 0 || dst_pix_fmt >= PIX_FMT_NB)
2377 return -1;
2378 if (src_width <= 0 || src_height <= 0)
2379 return 0;
2380
2381 if (!initialized) {
2382 initialized = 1;
2383 img_convert_init();
2384 }
2385
2386 dst_width = src_width;
2387 dst_height = src_height;
2388
2389 dst_pix = &pix_fmt_info[dst_pix_fmt];
2390 src_pix = &pix_fmt_info[src_pix_fmt];
2391 if (src_pix_fmt == dst_pix_fmt) {
2392 /* no conversion needed: just copy */
2393 av_picture_copy(dst, src, dst_pix_fmt, dst_width, dst_height);
2394 return 0;
2395 }
2396
2397 ce = &convert_table[src_pix_fmt][dst_pix_fmt];
2398 if (ce->convert) {
2399 /* specific conversion routine */
2400 ce->convert(dst, src, dst_width, dst_height);
2401 return 0;
2402 }
2403
2404 /* gray to YUV */
2405 if (is_yuv_planar(dst_pix) &&
2406 src_pix_fmt == PIX_FMT_GRAY8) {
2407 int w, h, y;
2408 uint8_t *d;
2409
2410 if (dst_pix->color_type == FF_COLOR_YUV_JPEG) {
2411 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2412 src->data[0], src->linesize[0],
2413 dst_width, dst_height);
2414 } else {
2415 img_apply_table(dst->data[0], dst->linesize[0],
2416 src->data[0], src->linesize[0],
2417 dst_width, dst_height,
2418 y_jpeg_to_ccir);
2419 }
2420 /* fill U and V with 128 */
2421 w = dst_width;
2422 h = dst_height;
2423 w >>= dst_pix->x_chroma_shift;
2424 h >>= dst_pix->y_chroma_shift;
2425 for(i = 1; i <= 2; i++) {
2426 d = dst->data[i];
2427 for(y = 0; y< h; y++) {
2428 memset(d, 128, w);
2429 d += dst->linesize[i];
2430 }
2431 }
2432 return 0;
2433 }
2434
2435 /* YUV to gray */
2436 if (is_yuv_planar(src_pix) &&
2437 dst_pix_fmt == PIX_FMT_GRAY8) {
2438 if (src_pix->color_type == FF_COLOR_YUV_JPEG) {
2439 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2440 src->data[0], src->linesize[0],
2441 dst_width, dst_height);
2442 } else {
2443 img_apply_table(dst->data[0], dst->linesize[0],
2444 src->data[0], src->linesize[0],
2445 dst_width, dst_height,
2446 y_ccir_to_jpeg);
2447 }
2448 return 0;
2449 }
2450
2451 /* YUV to YUV planar */
2452 if (is_yuv_planar(dst_pix) && is_yuv_planar(src_pix)) {
2453 int x_shift, y_shift, w, h, xy_shift;
2454 void (*resize_func)(uint8_t *dst, int dst_wrap,
2455 const uint8_t *src, int src_wrap,
2456 int width, int height);
2457
2458 /* compute chroma size of the smallest dimensions */
2459 w = dst_width;
2460 h = dst_height;
2461 if (dst_pix->x_chroma_shift >= src_pix->x_chroma_shift)
2462 w >>= dst_pix->x_chroma_shift;
2463 else
2464 w >>= src_pix->x_chroma_shift;
2465 if (dst_pix->y_chroma_shift >= src_pix->y_chroma_shift)
2466 h >>= dst_pix->y_chroma_shift;
2467 else
2468 h >>= src_pix->y_chroma_shift;
2469
2470 x_shift = (dst_pix->x_chroma_shift - src_pix->x_chroma_shift);
2471 y_shift = (dst_pix->y_chroma_shift - src_pix->y_chroma_shift);
2472 xy_shift = ((x_shift & 0xf) << 4) | (y_shift & 0xf);
2473 /* there must be filters for conversion at least from and to
2474 YUV444 format */
2475 switch(xy_shift) {
2476 case 0x00:
2477 resize_func = ff_img_copy_plane;
2478 break;
2479 case 0x10:
2480 resize_func = shrink21;
2481 break;
2482 case 0x20:
2483 resize_func = shrink41;
2484 break;
2485 case 0x01:
2486 resize_func = shrink12;
2487 break;
2488 case 0x11:
2489 resize_func = ff_shrink22;
2490 break;
2491 case 0x22:
2492 resize_func = ff_shrink44;
2493 break;
2494 case 0xf0:
2495 resize_func = grow21;
2496 break;
2497 case 0x0f:
2498 resize_func = grow12;
2499 break;
2500 case 0xe0:
2501 resize_func = grow41;
2502 break;
2503 case 0xff:
2504 resize_func = grow22;
2505 break;
2506 case 0xee:
2507 resize_func = grow44;
2508 break;
2509 case 0xf1:
2510 resize_func = conv411;
2511 break;
2512 default:
2513 /* currently not handled */
2514 goto no_chroma_filter;
2515 }
2516
2517 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2518 src->data[0], src->linesize[0],
2519 dst_width, dst_height);
2520
2521 for(i = 1;i <= 2; i++)
2522 resize_func(dst->data[i], dst->linesize[i],
2523 src->data[i], src->linesize[i],
2524 dst_width>>dst_pix->x_chroma_shift, dst_height>>dst_pix->y_chroma_shift);
2525 /* if yuv color space conversion is needed, we do it here on
2526 the destination image */
2527 if (dst_pix->color_type != src_pix->color_type) {
2528 const uint8_t *y_table, *c_table;
2529 if (dst_pix->color_type == FF_COLOR_YUV) {
2530 y_table = y_jpeg_to_ccir;
2531 c_table = c_jpeg_to_ccir;
2532 } else {
2533 y_table = y_ccir_to_jpeg;
2534 c_table = c_ccir_to_jpeg;
2535 }
2536 img_apply_table(dst->data[0], dst->linesize[0],
2537 dst->data[0], dst->linesize[0],
2538 dst_width, dst_height,
2539 y_table);
2540
2541 for(i = 1;i <= 2; i++)
2542 img_apply_table(dst->data[i], dst->linesize[i],
2543 dst->data[i], dst->linesize[i],
2544 dst_width>>dst_pix->x_chroma_shift,
2545 dst_height>>dst_pix->y_chroma_shift,
2546 c_table);
2547 }
2548 return 0;
2549 }
2550 no_chroma_filter:
2551
2552 /* try to use an intermediate format */
2553 if (src_pix_fmt == PIX_FMT_YUYV422 ||
2554 dst_pix_fmt == PIX_FMT_YUYV422) {
2555 /* specific case: convert to YUV422P first */
2556 int_pix_fmt = PIX_FMT_YUV422P;
2557 } else if (src_pix_fmt == PIX_FMT_UYVY422 ||
2558 dst_pix_fmt == PIX_FMT_UYVY422) {
2559 /* specific case: convert to YUV422P first */
2560 int_pix_fmt = PIX_FMT_YUV422P;
2561 } else if (src_pix_fmt == PIX_FMT_UYYVYY411 ||
2562 dst_pix_fmt == PIX_FMT_UYYVYY411) {
2563 /* specific case: convert to YUV411P first */
2564 int_pix_fmt = PIX_FMT_YUV411P;
2565 } else if ((src_pix->color_type == FF_COLOR_GRAY &&
2566 src_pix_fmt != PIX_FMT_GRAY8) ||
2567 (dst_pix->color_type == FF_COLOR_GRAY &&
2568 dst_pix_fmt != PIX_FMT_GRAY8)) {
2569 /* gray8 is the normalized format */
2570 int_pix_fmt = PIX_FMT_GRAY8;
2571 } else if ((is_yuv_planar(src_pix) &&
2572 src_pix_fmt != PIX_FMT_YUV444P &&
2573 src_pix_fmt != PIX_FMT_YUVJ444P)) {
2574 /* yuv444 is the normalized format */
2575 if (src_pix->color_type == FF_COLOR_YUV_JPEG)
2576 int_pix_fmt = PIX_FMT_YUVJ444P;
2577 else
2578 int_pix_fmt = PIX_FMT_YUV444P;
2579 } else if ((is_yuv_planar(dst_pix) &&
2580 dst_pix_fmt != PIX_FMT_YUV444P &&
2581 dst_pix_fmt != PIX_FMT_YUVJ444P)) {
2582 /* yuv444 is the normalized format */
2583 if (dst_pix->color_type == FF_COLOR_YUV_JPEG)
2584 int_pix_fmt = PIX_FMT_YUVJ444P;
2585 else
2586 int_pix_fmt = PIX_FMT_YUV444P;
2587 } else {
2588 /* the two formats are rgb or gray8 or yuv[j]444p */
2589 if (src_pix->is_alpha && dst_pix->is_alpha)
2590 int_pix_fmt = PIX_FMT_RGB32;
2591 else
2592 int_pix_fmt = PIX_FMT_RGB24;
2593 }
2594 if (src_pix_fmt == int_pix_fmt)
2595 return -1;
2596 if (avpicture_alloc(tmp, int_pix_fmt, dst_width, dst_height) < 0)
2597 return -1;
2598 ret = -1;
2599 if (img_convert(tmp, int_pix_fmt,
2600 src, src_pix_fmt, src_width, src_height) < 0)
2601 goto fail1;
2602 if (img_convert(dst, dst_pix_fmt,
2603 tmp, int_pix_fmt, dst_width, dst_height) < 0)
2604 goto fail1;
2605 ret = 0;
2606 fail1:
2607 avpicture_free(tmp);
2608 return ret;
2609 }
2610 #endif
2611
2612 /* NOTE: we scan all the pixels to have an exact information */
2613 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
2614 {
2615 const unsigned char *p;
2616 int src_wrap, ret, x, y;
2617 unsigned int a;
2618 uint32_t *palette = (uint32_t *)src->data[1];
2619
2620 p = src->data[0];
2621 src_wrap = src->linesize[0] - width;
2622 ret = 0;
2623 for(y=0;y<height;y++) {
2624 for(x=0;x<width;x++) {
2625 a = palette[p[0]] >> 24;
2626 if (a == 0x00) {
2627 ret |= FF_ALPHA_TRANSP;
2628 } else if (a != 0xff) {
2629 ret |= FF_ALPHA_SEMI_TRANSP;
2630 }
2631 p++;
2632 }
2633 p += src_wrap;
2634 }
2635 return ret;
2636 }
2637
2638 int img_get_alpha_info(const AVPicture *src,
2639 int pix_fmt, int width, int height)
2640 {
2641 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
2642 int ret;
2643
2644 pf = &pix_fmt_info[pix_fmt];
2645 /* no alpha can be represented in format */
2646 if (!pf->is_alpha)
2647 return 0;
2648 switch(pix_fmt) {
2649 case PIX_FMT_RGB32:
2650 ret = get_alpha_info_rgb32(src, width, height);
2651 break;
2652 case PIX_FMT_PAL8:
2653 ret = get_alpha_info_pal8(src, width, height);
2654 break;
2655 default:
2656 /* we do not know, so everything is indicated */
2657 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
2658 break;
2659 }
2660 return ret;
2661 }
2662
2663 #ifdef HAVE_MMX
2664 #define DEINT_INPLACE_LINE_LUM \
2665 movd_m2r(lum_m4[0],mm0);\
2666 movd_m2r(lum_m3[0],mm1);\
2667 movd_m2r(lum_m2[0],mm2);\
2668 movd_m2r(lum_m1[0],mm3);\
2669 movd_m2r(lum[0],mm4);\
2670 punpcklbw_r2r(mm7,mm0);\
2671 movd_r2m(mm2,lum_m4[0]);\
2672 punpcklbw_r2r(mm7,mm1);\
2673 punpcklbw_r2r(mm7,mm2);\
2674 punpcklbw_r2r(mm7,mm3);\
2675 punpcklbw_r2r(mm7,mm4);\
2676 paddw_r2r(mm3,mm1);\
2677 psllw_i2r(1,mm2);\
2678 paddw_r2r(mm4,mm0);\
2679 psllw_i2r(2,mm1);\
2680 paddw_r2r(mm6,mm2);\
2681 paddw_r2r(mm2,mm1);\
2682 psubusw_r2r(mm0,mm1);\
2683 psrlw_i2r(3,mm1);\
2684 packuswb_r2r(mm7,mm1);\
2685 movd_r2m(mm1,lum_m2[0]);
2686
2687 #define DEINT_LINE_LUM \
2688 movd_m2r(lum_m4[0],mm0);\
2689 movd_m2r(lum_m3[0],mm1);\
2690 movd_m2r(lum_m2[0],mm2);\
2691 movd_m2r(lum_m1[0],mm3);\
2692 movd_m2r(lum[0],mm4);\
2693 punpcklbw_r2r(mm7,mm0);\
2694 punpcklbw_r2r(mm7,mm1);\
2695 punpcklbw_r2r(mm7,mm2);\
2696 punpcklbw_r2r(mm7,mm3);\
2697 punpcklbw_r2r(mm7,mm4);\
2698 paddw_r2r(mm3,mm1);\
2699 psllw_i2r(1,mm2);\
2700 paddw_r2r(mm4,mm0);\
2701 psllw_i2r(2,mm1);\
2702 paddw_r2r(mm6,mm2);\
2703 paddw_r2r(mm2,mm1);\
2704 psubusw_r2r(mm0,mm1);\
2705 psrlw_i2r(3,mm1);\
2706 packuswb_r2r(mm7,mm1);\
2707 movd_r2m(mm1,dst[0]);
2708 #endif
2709
2710 /* filter parameters: [-1 4 2 4 -1] // 8 */
2711 static void deinterlace_line(uint8_t *dst,
2712 const uint8_t *lum_m4, const uint8_t *lum_m3,
2713 const uint8_t *lum_m2, const uint8_t *lum_m1,
2714 const uint8_t *lum,
2715 int size)
2716 {
2717 #ifndef HAVE_MMX
2718 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2719 int sum;
2720
2721 for(;size > 0;size--) {
2722 sum = -lum_m4[0];
2723 sum += lum_m3[0] << 2;
2724 sum += lum_m2[0] << 1;
2725 sum += lum_m1[0] << 2;
2726 sum += -lum[0];
2727 dst[0] = cm[(sum + 4) >> 3];
2728 lum_m4++;
2729 lum_m3++;
2730 lum_m2++;
2731 lum_m1++;
2732 lum++;
2733 dst++;
2734 }
2735 #else
2736
2737 {
2738 mmx_t rounder;
2739 rounder.uw[0]=4;
2740 rounder.uw[1]=4;
2741 rounder.uw[2]=4;
2742 rounder.uw[3]=4;
2743 pxor_r2r(mm7,mm7);
2744 movq_m2r(rounder,mm6);
2745 }
2746 for (;size > 3; size-=4) {
2747 DEINT_LINE_LUM
2748 lum_m4+=4;
2749 lum_m3+=4;
2750 lum_m2+=4;
2751 lum_m1+=4;
2752 lum+=4;
2753 dst+=4;
2754 }
2755 #endif
2756 }
2757 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
2758 int size)
2759 {
2760 #ifndef HAVE_MMX
2761 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2762 int sum;
2763
2764 for(;size > 0;size--) {
2765 sum = -lum_m4[0];
2766 sum += lum_m3[0] << 2;
2767 sum += lum_m2[0] << 1;
2768 lum_m4[0]=lum_m2[0];
2769 sum += lum_m1[0] << 2;
2770 sum += -lum[0];
2771 lum_m2[0] = cm[(sum + 4) >> 3];
2772 lum_m4++;
2773 lum_m3++;
2774 lum_m2++;
2775 lum_m1++;
2776 lum++;
2777 }
2778 #else
2779
2780 {
2781 mmx_t rounder;
2782 rounder.uw[0]=4;
2783 rounder.uw[1]=4;
2784 rounder.uw[2]=4;
2785 rounder.uw[3]=4;
2786 pxor_r2r(mm7,mm7);
2787 movq_m2r(rounder,mm6);
2788 }
2789 for (;size > 3; size-=4) {
2790 DEINT_INPLACE_LINE_LUM
2791 lum_m4+=4;
2792 lum_m3+=4;
2793 lum_m2+=4;
2794 lum_m1+=4;
2795 lum+=4;
2796 }
2797 #endif
2798 }
2799
2800 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
2801 top field is copied as is, but the bottom field is deinterlaced
2802 against the top field. */
2803 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
2804 const uint8_t *src1, int src_wrap,
2805 int width, int height)
2806 {
2807 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
2808 int y;
2809
2810 src_m2 = src1;
2811 src_m1 = src1;
2812 src_0=&src_m1[src_wrap];
2813 src_p1=&src_0[src_wrap];
2814 src_p2=&src_p1[src_wrap];
2815 for(y=0;y<(height-2);y+=2) {
2816 memcpy(dst,src_m1,width);
2817 dst += dst_wrap;
2818 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
2819 src_m2 = src_0;
2820 src_m1 = src_p1;
2821 src_0 = src_p2;
2822 src_p1 += 2*src_wrap;
2823 src_p2 += 2*src_wrap;
2824 dst += dst_wrap;
2825 }
2826 memcpy(dst,src_m1,width);
2827 dst += dst_wrap;
2828 /* do last line */
2829 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
2830 }
2831
2832 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
2833 int width, int height)
2834 {
2835 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
2836 int y;
2837 uint8_t *buf;
2838 buf = (uint8_t*)av_malloc(width);
2839
2840 src_m1 = src1;
2841 memcpy(buf,src_m1,width);
2842 src_0=&src_m1[src_wrap];
2843 src_p1=&src_0[src_wrap];
2844 src_p2=&src_p1[src_wrap];
2845 for(y=0;y<(height-2);y+=2) {
2846 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
2847 src_m1 = src_p1;
2848 src_0 = src_p2;
2849 src_p1 += 2*src_wrap;
2850 src_p2 += 2*src_wrap;
2851 }
2852 /* do last line */
2853 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
2854 av_free(buf);
2855 }
2856
2857 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2858 int pix_fmt, int width, int height)
2859 {
2860 int i;
2861
2862 if (pix_fmt != PIX_FMT_YUV420P &&
2863 pix_fmt != PIX_FMT_YUV422P &&
2864 pix_fmt != PIX_FMT_YUV444P &&
2865 pix_fmt != PIX_FMT_YUV411P &&
2866 pix_fmt != PIX_FMT_GRAY8)
2867 return -1;
2868 if ((width & 3) != 0 || (height & 3) != 0)
2869 return -1;
2870
2871 for(i=0;i<3;i++) {
2872 if (i == 1) {
2873 switch(pix_fmt) {
2874 case PIX_FMT_YUV420P:
2875 width >>= 1;
2876 height >>= 1;
2877 break;
2878 case PIX_FMT_YUV422P:
2879 width >>= 1;
2880 break;
2881 case PIX_FMT_YUV411P:
2882 width >>= 2;
2883 break;
2884 default:
2885 break;
2886 }
2887 if (pix_fmt == PIX_FMT_GRAY8) {
2888 break;
2889 }
2890 }
2891 if (src == dst) {
2892 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
2893 width, height);
2894 } else {
2895 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
2896 src->data[i], src->linesize[i],
2897 width, height);
2898 }
2899 }
2900 emms_c();
2901 return 0;
2902 }
2903
lucabe's unfinished and experimental patches for ffmpeg