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check for request_channels at codec init
[ffmpeg-lucabe.git] / libavcodec / imgconvert.c
blob229a3a3a0c6c954a68d8bfd82a703a45b1c8c9fe
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 "???";
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 break;
405 return i;
406 }
407
408 void avcodec_pix_fmt_string (char *buf, int buf_size, int pix_fmt)
409 {
410 PixFmtInfo info= pix_fmt_info[pix_fmt];
411
412 char is_alpha_char= info.is_alpha ? 'y' : 'n';
413
414 /* print header */
415 if (pix_fmt < 0)
416 snprintf (buf, buf_size,
417 "name " " nb_channels" " depth" " is_alpha"
418 );
419 else
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 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
430 int pix_fmt, int width, int height)
431 {
432 int size, w2, h2, size2;
433 const PixFmtInfo *pinfo;
434
435 if(avcodec_check_dimensions(NULL, width, height))
436 goto fail;
437
438 pinfo = &pix_fmt_info[pix_fmt];
439 size = width * height;
440 switch(pix_fmt) {
441 case PIX_FMT_YUV420P:
442 case PIX_FMT_YUV422P:
443 case PIX_FMT_YUV444P:
444 case PIX_FMT_YUV410P:
445 case PIX_FMT_YUV411P:
446 case PIX_FMT_YUV440P:
447 case PIX_FMT_YUVJ420P:
448 case PIX_FMT_YUVJ422P:
449 case PIX_FMT_YUVJ444P:
450 case PIX_FMT_YUVJ440P:
451 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
452 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
453 size2 = w2 * h2;
454 picture->data[0] = ptr;
455 picture->data[1] = picture->data[0] + size;
456 picture->data[2] = picture->data[1] + size2;
457 picture->data[3] = NULL;
458 picture->linesize[0] = width;
459 picture->linesize[1] = w2;
460 picture->linesize[2] = w2;
461 picture->linesize[3] = 0;
462 return size + 2 * size2;
463 case PIX_FMT_YUVA420P:
464 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
465 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
466 size2 = w2 * h2;
467 picture->data[0] = ptr;
468 picture->data[1] = picture->data[0] + size;
469 picture->data[2] = picture->data[1] + size2;
470 picture->data[3] = picture->data[1] + size2 + size2;
471 picture->linesize[0] = width;
472 picture->linesize[1] = w2;
473 picture->linesize[2] = w2;
474 picture->linesize[3] = width;
475 return 2 * size + 2 * size2;
476 case PIX_FMT_NV12:
477 case PIX_FMT_NV21:
478 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
479 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
480 size2 = w2 * h2 * 2;
481 picture->data[0] = ptr;
482 picture->data[1] = picture->data[0] + size;
483 picture->data[2] = NULL;
484 picture->data[3] = NULL;
485 picture->linesize[0] = width;
486 picture->linesize[1] = w2;
487 picture->linesize[2] = 0;
488 picture->linesize[3] = 0;
489 return size + 2 * size2;
490 case PIX_FMT_RGB24:
491 case PIX_FMT_BGR24:
492 picture->data[0] = ptr;
493 picture->data[1] = NULL;
494 picture->data[2] = NULL;
495 picture->data[3] = NULL;
496 picture->linesize[0] = width * 3;
497 return size * 3;
498 case PIX_FMT_RGB32:
499 case PIX_FMT_BGR32:
500 case PIX_FMT_RGB32_1:
501 case PIX_FMT_BGR32_1:
502 picture->data[0] = ptr;
503 picture->data[1] = NULL;
504 picture->data[2] = NULL;
505 picture->data[3] = NULL;
506 picture->linesize[0] = width * 4;
507 return size * 4;
508 case PIX_FMT_GRAY16BE:
509 case PIX_FMT_GRAY16LE:
510 case PIX_FMT_BGR555:
511 case PIX_FMT_BGR565:
512 case PIX_FMT_RGB555:
513 case PIX_FMT_RGB565:
514 case PIX_FMT_YUYV422:
515 picture->data[0] = ptr;
516 picture->data[1] = NULL;
517 picture->data[2] = NULL;
518 picture->data[3] = NULL;
519 picture->linesize[0] = width * 2;
520 return size * 2;
521 case PIX_FMT_UYVY422:
522 picture->data[0] = ptr;
523 picture->data[1] = NULL;
524 picture->data[2] = NULL;
525 picture->data[3] = NULL;
526 picture->linesize[0] = width * 2;
527 return size * 2;
528 case PIX_FMT_UYYVYY411:
529 picture->data[0] = ptr;
530 picture->data[1] = NULL;
531 picture->data[2] = NULL;
532 picture->data[3] = NULL;
533 picture->linesize[0] = width + width/2;
534 return size + size/2;
535 case PIX_FMT_RGB8:
536 case PIX_FMT_BGR8:
537 case PIX_FMT_RGB4_BYTE:
538 case PIX_FMT_BGR4_BYTE:
539 case PIX_FMT_GRAY8:
540 picture->data[0] = ptr;
541 picture->data[1] = NULL;
542 picture->data[2] = NULL;
543 picture->data[3] = NULL;
544 picture->linesize[0] = width;
545 return size;
546 case PIX_FMT_RGB4:
547 case PIX_FMT_BGR4:
548 picture->data[0] = ptr;
549 picture->data[1] = NULL;
550 picture->data[2] = NULL;
551 picture->data[3] = NULL;
552 picture->linesize[0] = width / 2;
553 return size / 2;
554 case PIX_FMT_MONOWHITE:
555 case PIX_FMT_MONOBLACK:
556 picture->data[0] = ptr;
557 picture->data[1] = NULL;
558 picture->data[2] = NULL;
559 picture->data[3] = NULL;
560 picture->linesize[0] = (width + 7) >> 3;
561 return picture->linesize[0] * height;
562 case PIX_FMT_PAL8:
563 size2 = (size + 3) & ~3;
564 picture->data[0] = ptr;
565 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
566 picture->data[2] = NULL;
567 picture->data[3] = NULL;
568 picture->linesize[0] = width;
569 picture->linesize[1] = 4;
570 return size2 + 256 * 4;
571 default:
572 fail:
573 picture->data[0] = NULL;
574 picture->data[1] = NULL;
575 picture->data[2] = NULL;
576 picture->data[3] = NULL;
577 return -1;
578 }
579 }
580
581 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
582 unsigned char *dest, int dest_size)
583 {
584 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
585 int i, j, w, h, data_planes;
586 const unsigned char* s;
587 int size = avpicture_get_size(pix_fmt, width, height);
588
589 if (size > dest_size || size < 0)
590 return -1;
591
592 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
593 if (pix_fmt == PIX_FMT_YUYV422 ||
594 pix_fmt == PIX_FMT_UYVY422 ||
595 pix_fmt == PIX_FMT_BGR565 ||
596 pix_fmt == PIX_FMT_BGR555 ||
597 pix_fmt == PIX_FMT_RGB565 ||
598 pix_fmt == PIX_FMT_RGB555)
599 w = width * 2;
600 else if (pix_fmt == PIX_FMT_UYYVYY411)
601 w = width + width/2;
602 else if (pix_fmt == PIX_FMT_PAL8)
603 w = width;
604 else
605 w = width * (pf->depth * pf->nb_channels / 8);
606
607 data_planes = 1;
608 h = height;
609 } else {
610 data_planes = pf->nb_channels;
611 w = (width*pf->depth + 7)/8;
612 h = height;
613 }
614
615 for (i=0; i<data_planes; i++) {
616 if (i == 1) {
617 w = width >> pf->x_chroma_shift;
618 h = height >> pf->y_chroma_shift;
619 }
620 s = src->data[i];
621 for(j=0; j<h; j++) {
622 memcpy(dest, s, w);
623 dest += w;
624 s += src->linesize[i];
625 }
626 }
627
628 if (pf->pixel_type == FF_PIXEL_PALETTE)
629 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
630
631 return size;
632 }
633
634 int avpicture_get_size(int pix_fmt, int width, int height)
635 {
636 AVPicture dummy_pict;
637 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
638 }
639
640 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
641 int has_alpha)
642 {
643 const PixFmtInfo *pf, *ps;
644 int loss;
645
646 ps = &pix_fmt_info[src_pix_fmt];
647 pf = &pix_fmt_info[dst_pix_fmt];
648
649 /* compute loss */
650 loss = 0;
651 pf = &pix_fmt_info[dst_pix_fmt];
652 if (pf->depth < ps->depth ||
653 (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
654 loss |= FF_LOSS_DEPTH;
655 if (pf->x_chroma_shift > ps->x_chroma_shift ||
656 pf->y_chroma_shift > ps->y_chroma_shift)
657 loss |= FF_LOSS_RESOLUTION;
658 switch(pf->color_type) {
659 case FF_COLOR_RGB:
660 if (ps->color_type != FF_COLOR_RGB &&
661 ps->color_type != FF_COLOR_GRAY)
662 loss |= FF_LOSS_COLORSPACE;
663 break;
664 case FF_COLOR_GRAY:
665 if (ps->color_type != FF_COLOR_GRAY)
666 loss |= FF_LOSS_COLORSPACE;
667 break;
668 case FF_COLOR_YUV:
669 if (ps->color_type != FF_COLOR_YUV)
670 loss |= FF_LOSS_COLORSPACE;
671 break;
672 case FF_COLOR_YUV_JPEG:
673 if (ps->color_type != FF_COLOR_YUV_JPEG &&
674 ps->color_type != FF_COLOR_YUV &&
675 ps->color_type != FF_COLOR_GRAY)
676 loss |= FF_LOSS_COLORSPACE;
677 break;
678 default:
679 /* fail safe test */
680 if (ps->color_type != pf->color_type)
681 loss |= FF_LOSS_COLORSPACE;
682 break;
683 }
684 if (pf->color_type == FF_COLOR_GRAY &&
685 ps->color_type != FF_COLOR_GRAY)
686 loss |= FF_LOSS_CHROMA;
687 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
688 loss |= FF_LOSS_ALPHA;
689 if (pf->pixel_type == FF_PIXEL_PALETTE &&
690 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
691 loss |= FF_LOSS_COLORQUANT;
692 return loss;
693 }
694
695 static int avg_bits_per_pixel(int pix_fmt)
696 {
697 int bits;
698 const PixFmtInfo *pf;
699
700 pf = &pix_fmt_info[pix_fmt];
701 switch(pf->pixel_type) {
702 case FF_PIXEL_PACKED:
703 switch(pix_fmt) {
704 case PIX_FMT_YUYV422:
705 case PIX_FMT_UYVY422:
706 case PIX_FMT_RGB565:
707 case PIX_FMT_RGB555:
708 case PIX_FMT_BGR565:
709 case PIX_FMT_BGR555:
710 bits = 16;
711 break;
712 case PIX_FMT_UYYVYY411:
713 bits = 12;
714 break;
715 default:
716 bits = pf->depth * pf->nb_channels;
717 break;
718 }
719 break;
720 case FF_PIXEL_PLANAR:
721 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
722 bits = pf->depth * pf->nb_channels;
723 } else {
724 bits = pf->depth + ((2 * pf->depth) >>
725 (pf->x_chroma_shift + pf->y_chroma_shift));
726 }
727 break;
728 case FF_PIXEL_PALETTE:
729 bits = 8;
730 break;
731 default:
732 bits = -1;
733 break;
734 }
735 return bits;
736 }
737
738 static int avcodec_find_best_pix_fmt1(int pix_fmt_mask,
739 int src_pix_fmt,
740 int has_alpha,
741 int loss_mask)
742 {
743 int dist, i, loss, min_dist, dst_pix_fmt;
744
745 /* find exact color match with smallest size */
746 dst_pix_fmt = -1;
747 min_dist = 0x7fffffff;
748 for(i = 0;i < PIX_FMT_NB; i++) {
749 if (pix_fmt_mask & (1 << i)) {
750 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
751 if (loss == 0) {
752 dist = avg_bits_per_pixel(i);
753 if (dist < min_dist) {
754 min_dist = dist;
755 dst_pix_fmt = i;
756 }
757 }
758 }
759 }
760 return dst_pix_fmt;
761 }
762
763 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
764 int has_alpha, int *loss_ptr)
765 {
766 int dst_pix_fmt, loss_mask, i;
767 static const int loss_mask_order[] = {
768 ~0, /* no loss first */
769 ~FF_LOSS_ALPHA,
770 ~FF_LOSS_RESOLUTION,
771 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
772 ~FF_LOSS_COLORQUANT,
773 ~FF_LOSS_DEPTH,
774 0,
775 };
776
777 /* try with successive loss */
778 i = 0;
779 for(;;) {
780 loss_mask = loss_mask_order[i++];
781 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
782 has_alpha, loss_mask);
783 if (dst_pix_fmt >= 0)
784 goto found;
785 if (loss_mask == 0)
786 break;
787 }
788 return -1;
789 found:
790 if (loss_ptr)
791 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
792 return dst_pix_fmt;
793 }
794
795 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
796 const uint8_t *src, int src_wrap,
797 int width, int height)
798 {
799 if((!dst) || (!src))
800 return;
801 for(;height > 0; height--) {
802 memcpy(dst, src, width);
803 dst += dst_wrap;
804 src += src_wrap;
805 }
806 }
807
808 void av_picture_copy(AVPicture *dst, const AVPicture *src,
809 int pix_fmt, int width, int height)
810 {
811 int bwidth, bits, i;
812 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
813
814 pf = &pix_fmt_info[pix_fmt];
815 switch(pf->pixel_type) {
816 case FF_PIXEL_PACKED:
817 switch(pix_fmt) {
818 case PIX_FMT_YUYV422:
819 case PIX_FMT_UYVY422:
820 case PIX_FMT_RGB565:
821 case PIX_FMT_RGB555:
822 case PIX_FMT_BGR565:
823 case PIX_FMT_BGR555:
824 bits = 16;
825 break;
826 case PIX_FMT_UYYVYY411:
827 bits = 12;
828 break;
829 default:
830 bits = pf->depth * pf->nb_channels;
831 break;
832 }
833 bwidth = (width * bits + 7) >> 3;
834 ff_img_copy_plane(dst->data[0], dst->linesize[0],
835 src->data[0], src->linesize[0],
836 bwidth, height);
837 break;
838 case FF_PIXEL_PLANAR:
839 for(i = 0; i < pf->nb_channels; i++) {
840 int w, h;
841 w = width;
842 h = height;
843 if (i == 1 || i == 2) {
844 w >>= pf->x_chroma_shift;
845 h >>= pf->y_chroma_shift;
846 }
847 bwidth = (w * pf->depth + 7) >> 3;
848 ff_img_copy_plane(dst->data[i], dst->linesize[i],
849 src->data[i], src->linesize[i],
850 bwidth, h);
851 }
852 break;
853 case FF_PIXEL_PALETTE:
854 ff_img_copy_plane(dst->data[0], dst->linesize[0],
855 src->data[0], src->linesize[0],
856 width, height);
857 /* copy the palette */
858 ff_img_copy_plane(dst->data[1], dst->linesize[1],
859 src->data[1], src->linesize[1],
860 4, 256);
861 break;
862 }
863 }
864
865 /* XXX: totally non optimized */
866
867 static void yuyv422_to_yuv420p(AVPicture *dst, const AVPicture *src,
868 int width, int height)
869 {
870 const uint8_t *p, *p1;
871 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
872 int w;
873
874 p1 = src->data[0];
875 lum1 = dst->data[0];
876 cb1 = dst->data[1];
877 cr1 = dst->data[2];
878
879 for(;height >= 1; height -= 2) {
880 p = p1;
881 lum = lum1;
882 cb = cb1;
883 cr = cr1;
884 for(w = width; w >= 2; w -= 2) {
885 lum[0] = p[0];
886 cb[0] = p[1];
887 lum[1] = p[2];
888 cr[0] = p[3];
889 p += 4;
890 lum += 2;
891 cb++;
892 cr++;
893 }
894 if (w) {
895 lum[0] = p[0];
896 cb[0] = p[1];
897 cr[0] = p[3];
898 cb++;
899 cr++;
900 }
901 p1 += src->linesize[0];
902 lum1 += dst->linesize[0];
903 if (height>1) {
904 p = p1;
905 lum = lum1;
906 for(w = width; w >= 2; w -= 2) {
907 lum[0] = p[0];
908 lum[1] = p[2];
909 p += 4;
910 lum += 2;
911 }
912 if (w) {
913 lum[0] = p[0];
914 }
915 p1 += src->linesize[0];
916 lum1 += dst->linesize[0];
917 }
918 cb1 += dst->linesize[1];
919 cr1 += dst->linesize[2];
920 }
921 }
922
923 static void uyvy422_to_yuv420p(AVPicture *dst, const AVPicture *src,
924 int width, int height)
925 {
926 const uint8_t *p, *p1;
927 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
928 int w;
929
930 p1 = src->data[0];
931
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[1];
943 cb[0] = p[0];
944 lum[1] = p[3];
945 cr[0] = p[2];
946 p += 4;
947 lum += 2;
948 cb++;
949 cr++;
950 }
951 if (w) {
952 lum[0] = p[1];
953 cb[0] = p[0];
954 cr[0] = p[2];
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[1];
965 lum[1] = p[3];
966 p += 4;
967 lum += 2;
968 }
969 if (w) {
970 lum[0] = p[1];
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
981 static void uyvy422_to_yuv422p(AVPicture *dst, const AVPicture *src,
982 int width, int height)
983 {
984 const uint8_t *p, *p1;
985 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
986 int w;
987
988 p1 = src->data[0];
989 lum1 = dst->data[0];
990 cb1 = dst->data[1];
991 cr1 = dst->data[2];
992 for(;height > 0; height--) {
993 p = p1;
994 lum = lum1;
995 cb = cb1;
996 cr = cr1;
997 for(w = width; w >= 2; w -= 2) {
998 lum[0] = p[1];
999 cb[0] = p[0];
1000 lum[1] = p[3];
1001 cr[0] = p[2];
1002 p += 4;
1003 lum += 2;
1004 cb++;
1005 cr++;
1006 }
1007 p1 += src->linesize[0];
1008 lum1 += dst->linesize[0];
1009 cb1 += dst->linesize[1];
1010 cr1 += dst->linesize[2];
1011 }
1012 }
1013
1014
1015 static void yuyv422_to_yuv422p(AVPicture *dst, const AVPicture *src,
1016 int width, int height)
1017 {
1018 const uint8_t *p, *p1;
1019 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1020 int w;
1021
1022 p1 = src->data[0];
1023 lum1 = dst->data[0];
1024 cb1 = dst->data[1];
1025 cr1 = dst->data[2];
1026 for(;height > 0; height--) {
1027 p = p1;
1028 lum = lum1;
1029 cb = cb1;
1030 cr = cr1;
1031 for(w = width; w >= 2; w -= 2) {
1032 lum[0] = p[0];
1033 cb[0] = p[1];
1034 lum[1] = p[2];
1035 cr[0] = p[3];
1036 p += 4;
1037 lum += 2;
1038 cb++;
1039 cr++;
1040 }
1041 p1 += src->linesize[0];
1042 lum1 += dst->linesize[0];
1043 cb1 += dst->linesize[1];
1044 cr1 += dst->linesize[2];
1045 }
1046 }
1047
1048 static void yuv422p_to_yuyv422(AVPicture *dst, const AVPicture *src,
1049 int width, int height)
1050 {
1051 uint8_t *p, *p1;
1052 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1053 int w;
1054
1055 p1 = dst->data[0];
1056 lum1 = src->data[0];
1057 cb1 = src->data[1];
1058 cr1 = src->data[2];
1059 for(;height > 0; height--) {
1060 p = p1;
1061 lum = lum1;
1062 cb = cb1;
1063 cr = cr1;
1064 for(w = width; w >= 2; w -= 2) {
1065 p[0] = lum[0];
1066 p[1] = cb[0];
1067 p[2] = lum[1];
1068 p[3] = cr[0];
1069 p += 4;
1070 lum += 2;
1071 cb++;
1072 cr++;
1073 }
1074 p1 += dst->linesize[0];
1075 lum1 += src->linesize[0];
1076 cb1 += src->linesize[1];
1077 cr1 += src->linesize[2];
1078 }
1079 }
1080
1081 static void yuv422p_to_uyvy422(AVPicture *dst, const AVPicture *src,
1082 int width, int height)
1083 {
1084 uint8_t *p, *p1;
1085 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1086 int w;
1087
1088 p1 = dst->data[0];
1089 lum1 = src->data[0];
1090 cb1 = src->data[1];
1091 cr1 = src->data[2];
1092 for(;height > 0; height--) {
1093 p = p1;
1094 lum = lum1;
1095 cb = cb1;
1096 cr = cr1;
1097 for(w = width; w >= 2; w -= 2) {
1098 p[1] = lum[0];
1099 p[0] = cb[0];
1100 p[3] = lum[1];
1101 p[2] = cr[0];
1102 p += 4;
1103 lum += 2;
1104 cb++;
1105 cr++;
1106 }
1107 p1 += dst->linesize[0];
1108 lum1 += src->linesize[0];
1109 cb1 += src->linesize[1];
1110 cr1 += src->linesize[2];
1111 }
1112 }
1113
1114 static void uyyvyy411_to_yuv411p(AVPicture *dst, const AVPicture *src,
1115 int width, int height)
1116 {
1117 const uint8_t *p, *p1;
1118 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1119 int w;
1120
1121 p1 = src->data[0];
1122 lum1 = dst->data[0];
1123 cb1 = dst->data[1];
1124 cr1 = dst->data[2];
1125 for(;height > 0; height--) {
1126 p = p1;
1127 lum = lum1;
1128 cb = cb1;
1129 cr = cr1;
1130 for(w = width; w >= 4; w -= 4) {
1131 cb[0] = p[0];
1132 lum[0] = p[1];
1133 lum[1] = p[2];
1134 cr[0] = p[3];
1135 lum[2] = p[4];
1136 lum[3] = p[5];
1137 p += 6;
1138 lum += 4;
1139 cb++;
1140 cr++;
1141 }
1142 p1 += src->linesize[0];
1143 lum1 += dst->linesize[0];
1144 cb1 += dst->linesize[1];
1145 cr1 += dst->linesize[2];
1146 }
1147 }
1148
1149
1150 static void yuv420p_to_yuyv422(AVPicture *dst, const AVPicture *src,
1151 int width, int height)
1152 {
1153 int w, h;
1154 uint8_t *line1, *line2, *linesrc = dst->data[0];
1155 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
1156 uint8_t *cb1, *cb2 = src->data[1];
1157 uint8_t *cr1, *cr2 = src->data[2];
1158
1159 for(h = height / 2; h--;) {
1160 line1 = linesrc;
1161 line2 = linesrc + dst->linesize[0];
1162
1163 lum1 = lumsrc;
1164 lum2 = lumsrc + src->linesize[0];
1165
1166 cb1 = cb2;
1167 cr1 = cr2;
1168
1169 for(w = width / 2; w--;) {
1170 *line1++ = *lum1++; *line2++ = *lum2++;
1171 *line1++ = *line2++ = *cb1++;
1172 *line1++ = *lum1++; *line2++ = *lum2++;
1173 *line1++ = *line2++ = *cr1++;
1174 }
1175
1176 linesrc += dst->linesize[0] * 2;
1177 lumsrc += src->linesize[0] * 2;
1178 cb2 += src->linesize[1];
1179 cr2 += src->linesize[2];
1180 }
1181 }
1182
1183 static void yuv420p_to_uyvy422(AVPicture *dst, const AVPicture *src,
1184 int width, int height)
1185 {
1186 int w, h;
1187 uint8_t *line1, *line2, *linesrc = dst->data[0];
1188 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
1189 uint8_t *cb1, *cb2 = src->data[1];
1190 uint8_t *cr1, *cr2 = src->data[2];
1191
1192 for(h = height / 2; h--;) {
1193 line1 = linesrc;
1194 line2 = linesrc + dst->linesize[0];
1195
1196 lum1 = lumsrc;
1197 lum2 = lumsrc + src->linesize[0];
1198
1199 cb1 = cb2;
1200 cr1 = cr2;
1201
1202 for(w = width / 2; w--;) {
1203 *line1++ = *line2++ = *cb1++;
1204 *line1++ = *lum1++; *line2++ = *lum2++;
1205 *line1++ = *line2++ = *cr1++;
1206 *line1++ = *lum1++; *line2++ = *lum2++;
1207 }
1208
1209 linesrc += dst->linesize[0] * 2;
1210 lumsrc += src->linesize[0] * 2;
1211 cb2 += src->linesize[1];
1212 cr2 += src->linesize[2];
1213 }
1214 }
1215
1216 static uint8_t y_ccir_to_jpeg[256];
1217 static uint8_t y_jpeg_to_ccir[256];
1218 static uint8_t c_ccir_to_jpeg[256];
1219 static uint8_t c_jpeg_to_ccir[256];
1220
1221 /* init various conversion tables */
1222 static void img_convert_init(void)
1223 {
1224 int i;
1225 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1226
1227 for(i = 0;i < 256; i++) {
1228 y_ccir_to_jpeg[i] = Y_CCIR_TO_JPEG(i);
1229 y_jpeg_to_ccir[i] = Y_JPEG_TO_CCIR(i);
1230 c_ccir_to_jpeg[i] = C_CCIR_TO_JPEG(i);
1231 c_jpeg_to_ccir[i] = C_JPEG_TO_CCIR(i);
1232 }
1233 }
1234
1235 /* apply to each pixel the given table */
1236 static void img_apply_table(uint8_t *dst, int dst_wrap,
1237 const uint8_t *src, int src_wrap,
1238 int width, int height, const uint8_t *table1)
1239 {
1240 int n;
1241 const uint8_t *s;
1242 uint8_t *d;
1243 const uint8_t *table;
1244
1245 table = table1;
1246 for(;height > 0; height--) {
1247 s = src;
1248 d = dst;
1249 n = width;
1250 while (n >= 4) {
1251 d[0] = table[s[0]];
1252 d[1] = table[s[1]];
1253 d[2] = table[s[2]];
1254 d[3] = table[s[3]];
1255 d += 4;
1256 s += 4;
1257 n -= 4;
1258 }
1259 while (n > 0) {
1260 d[0] = table[s[0]];
1261 d++;
1262 s++;
1263 n--;
1264 }
1265 dst += dst_wrap;
1266 src += src_wrap;
1267 }
1268 }
1269
1270 /* XXX: use generic filter ? */
1271 /* XXX: in most cases, the sampling position is incorrect */
1272
1273 /* 4x1 -> 1x1 */
1274 static void shrink41(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 *s;
1280 uint8_t *d;
1281
1282 for(;height > 0; height--) {
1283 s = src;
1284 d = dst;
1285 for(w = width;w > 0; w--) {
1286 d[0] = (s[0] + s[1] + s[2] + s[3] + 2) >> 2;
1287 s += 4;
1288 d++;
1289 }
1290 src += src_wrap;
1291 dst += dst_wrap;
1292 }
1293 }
1294
1295 /* 2x1 -> 1x1 */
1296 static void shrink21(uint8_t *dst, int dst_wrap,
1297 const uint8_t *src, int src_wrap,
1298 int width, int height)
1299 {
1300 int w;
1301 const uint8_t *s;
1302 uint8_t *d;
1303
1304 for(;height > 0; height--) {
1305 s = src;
1306 d = dst;
1307 for(w = width;w > 0; w--) {
1308 d[0] = (s[0] + s[1]) >> 1;
1309 s += 2;
1310 d++;
1311 }
1312 src += src_wrap;
1313 dst += dst_wrap;
1314 }
1315 }
1316
1317 /* 1x2 -> 1x1 */
1318 static void shrink12(uint8_t *dst, int dst_wrap,
1319 const uint8_t *src, int src_wrap,
1320 int width, int height)
1321 {
1322 int w;
1323 uint8_t *d;
1324 const uint8_t *s1, *s2;
1325
1326 for(;height > 0; height--) {
1327 s1 = src;
1328 s2 = s1 + src_wrap;
1329 d = dst;
1330 for(w = width;w >= 4; w-=4) {
1331 d[0] = (s1[0] + s2[0]) >> 1;
1332 d[1] = (s1[1] + s2[1]) >> 1;
1333 d[2] = (s1[2] + s2[2]) >> 1;
1334 d[3] = (s1[3] + s2[3]) >> 1;
1335 s1 += 4;
1336 s2 += 4;
1337 d += 4;
1338 }
1339 for(;w > 0; w--) {
1340 d[0] = (s1[0] + s2[0]) >> 1;
1341 s1++;
1342 s2++;
1343 d++;
1344 }
1345 src += 2 * src_wrap;
1346 dst += dst_wrap;
1347 }
1348 }
1349
1350 /* 2x2 -> 1x1 */
1351 void ff_shrink22(uint8_t *dst, int dst_wrap,
1352 const uint8_t *src, int src_wrap,
1353 int width, int height)
1354 {
1355 int w;
1356 const uint8_t *s1, *s2;
1357 uint8_t *d;
1358
1359 for(;height > 0; height--) {
1360 s1 = src;
1361 s2 = s1 + src_wrap;
1362 d = dst;
1363 for(w = width;w >= 4; w-=4) {
1364 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1365 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1366 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1367 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1368 s1 += 8;
1369 s2 += 8;
1370 d += 4;
1371 }
1372 for(;w > 0; w--) {
1373 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1374 s1 += 2;
1375 s2 += 2;
1376 d++;
1377 }
1378 src += 2 * src_wrap;
1379 dst += dst_wrap;
1380 }
1381 }
1382
1383 /* 4x4 -> 1x1 */
1384 void ff_shrink44(uint8_t *dst, int dst_wrap,
1385 const uint8_t *src, int src_wrap,
1386 int width, int height)
1387 {
1388 int w;
1389 const uint8_t *s1, *s2, *s3, *s4;
1390 uint8_t *d;
1391
1392 for(;height > 0; height--) {
1393 s1 = src;
1394 s2 = s1 + src_wrap;
1395 s3 = s2 + src_wrap;
1396 s4 = s3 + src_wrap;
1397 d = dst;
1398 for(w = width;w > 0; w--) {
1399 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1400 s2[0] + s2[1] + s2[2] + s2[3] +
1401 s3[0] + s3[1] + s3[2] + s3[3] +
1402 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1403 s1 += 4;
1404 s2 += 4;
1405 s3 += 4;
1406 s4 += 4;
1407 d++;
1408 }
1409 src += 4 * src_wrap;
1410 dst += dst_wrap;
1411 }
1412 }
1413
1414 /* 8x8 -> 1x1 */
1415 void ff_shrink88(uint8_t *dst, int dst_wrap,
1416 const uint8_t *src, int src_wrap,
1417 int width, int height)
1418 {
1419 int w, i;
1420
1421 for(;height > 0; height--) {
1422 for(w = width;w > 0; w--) {
1423 int tmp=0;
1424 for(i=0; i<8; i++){
1425 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1426 src += src_wrap;
1427 }
1428 *(dst++) = (tmp + 32)>>6;
1429 src += 8 - 8*src_wrap;
1430 }
1431 src += 8*src_wrap - 8*width;
1432 dst += dst_wrap - width;
1433 }
1434 }
1435
1436 static void grow21_line(uint8_t *dst, const uint8_t *src,
1437 int width)
1438 {
1439 int w;
1440 const uint8_t *s1;
1441 uint8_t *d;
1442
1443 s1 = src;
1444 d = dst;
1445 for(w = width;w >= 4; w-=4) {
1446 d[1] = d[0] = s1[0];
1447 d[3] = d[2] = s1[1];
1448 s1 += 2;
1449 d += 4;
1450 }
1451 for(;w >= 2; w -= 2) {
1452 d[1] = d[0] = s1[0];
1453 s1 ++;
1454 d += 2;
1455 }
1456 /* only needed if width is not a multiple of two */
1457 /* XXX: veryfy that */
1458 if (w) {
1459 d[0] = s1[0];
1460 }
1461 }
1462
1463 static void grow41_line(uint8_t *dst, const uint8_t *src,
1464 int width)
1465 {
1466 int w, v;
1467 const uint8_t *s1;
1468 uint8_t *d;
1469
1470 s1 = src;
1471 d = dst;
1472 for(w = width;w >= 4; w-=4) {
1473 v = s1[0];
1474 d[0] = v;
1475 d[1] = v;
1476 d[2] = v;
1477 d[3] = v;
1478 s1 ++;
1479 d += 4;
1480 }
1481 }
1482
1483 /* 1x1 -> 2x1 */
1484 static void grow21(uint8_t *dst, int dst_wrap,
1485 const uint8_t *src, int src_wrap,
1486 int width, int height)
1487 {
1488 for(;height > 0; height--) {
1489 grow21_line(dst, src, width);
1490 src += src_wrap;
1491 dst += dst_wrap;
1492 }
1493 }
1494
1495 /* 1x1 -> 1x2 */
1496 static void grow12(uint8_t *dst, int dst_wrap,
1497 const uint8_t *src, int src_wrap,
1498 int width, int height)
1499 {
1500 for(;height > 0; height-=2) {
1501 memcpy(dst, src, width);
1502 dst += dst_wrap;
1503 memcpy(dst, src, width);
1504 dst += dst_wrap;
1505 src += src_wrap;
1506 }
1507 }
1508
1509 /* 1x1 -> 2x2 */
1510 static void grow22(uint8_t *dst, int dst_wrap,
1511 const uint8_t *src, int src_wrap,
1512 int width, int height)
1513 {
1514 for(;height > 0; height--) {
1515 grow21_line(dst, src, width);
1516 if (height%2)
1517 src += src_wrap;
1518 dst += dst_wrap;
1519 }
1520 }
1521
1522 /* 1x1 -> 4x1 */
1523 static void grow41(uint8_t *dst, int dst_wrap,
1524 const uint8_t *src, int src_wrap,
1525 int width, int height)
1526 {
1527 for(;height > 0; height--) {
1528 grow41_line(dst, src, width);
1529 src += src_wrap;
1530 dst += dst_wrap;
1531 }
1532 }
1533
1534 /* 1x1 -> 4x4 */
1535 static void grow44(uint8_t *dst, int dst_wrap,
1536 const uint8_t *src, int src_wrap,
1537 int width, int height)
1538 {
1539 for(;height > 0; height--) {
1540 grow41_line(dst, src, width);
1541 if ((height & 3) == 1)
1542 src += src_wrap;
1543 dst += dst_wrap;
1544 }
1545 }
1546
1547 /* 1x2 -> 2x1 */
1548 static void conv411(uint8_t *dst, int dst_wrap,
1549 const uint8_t *src, int src_wrap,
1550 int width, int height)
1551 {
1552 int w, c;
1553 const uint8_t *s1, *s2;
1554 uint8_t *d;
1555
1556 width>>=1;
1557
1558 for(;height > 0; height--) {
1559 s1 = src;
1560 s2 = src + src_wrap;
1561 d = dst;
1562 for(w = width;w > 0; w--) {
1563 c = (s1[0] + s2[0]) >> 1;
1564 d[0] = c;
1565 d[1] = c;
1566 s1++;
1567 s2++;
1568 d += 2;
1569 }
1570 src += src_wrap * 2;
1571 dst += dst_wrap;
1572 }
1573 }
1574
1575 /* XXX: add jpeg quantize code */
1576
1577 #define TRANSP_INDEX (6*6*6)
1578
1579 /* this is maybe slow, but allows for extensions */
1580 static inline unsigned char gif_clut_index(uint8_t r, uint8_t g, uint8_t b)
1581 {
1582 return ((((r)/47)%6)*6*6+(((g)/47)%6)*6+(((b)/47)%6));
1583 }
1584
1585 static void build_rgb_palette(uint8_t *palette, int has_alpha)
1586 {
1587 uint32_t *pal;
1588 static const uint8_t pal_value[6] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
1589 int i, r, g, b;
1590
1591 pal = (uint32_t *)palette;
1592 i = 0;
1593 for(r = 0; r < 6; r++) {
1594 for(g = 0; g < 6; g++) {
1595 for(b = 0; b < 6; b++) {
1596 pal[i++] = (0xff << 24) | (pal_value[r] << 16) |
1597 (pal_value[g] << 8) | pal_value[b];
1598 }
1599 }
1600 }
1601 if (has_alpha)
1602 pal[i++] = 0;
1603 while (i < 256)
1604 pal[i++] = 0xff000000;
1605 }
1606
1607 /* copy bit n to bits 0 ... n - 1 */
1608 static inline unsigned int bitcopy_n(unsigned int a, int n)
1609 {
1610 int mask;
1611 mask = (1 << n) - 1;
1612 return (a & (0xff & ~mask)) | ((-((a >> n) & 1)) & mask);
1613 }
1614
1615 /* rgb555 handling */
1616
1617 #define RGB_NAME rgb555
1618
1619 #define RGB_IN(r, g, b, s)\
1620 {\
1621 unsigned int v = ((const uint16_t *)(s))[0];\
1622 r = bitcopy_n(v >> (10 - 3), 3);\
1623 g = bitcopy_n(v >> (5 - 3), 3);\
1624 b = bitcopy_n(v << 3, 3);\
1625 }
1626
1627
1628 #define RGB_OUT(d, r, g, b)\
1629 {\
1630 ((uint16_t *)(d))[0] = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);\
1631 }
1632
1633 #define BPP 2
1634
1635 #include "imgconvert_template.h"
1636
1637 /* rgb565 handling */
1638
1639 #define RGB_NAME rgb565
1640
1641 #define RGB_IN(r, g, b, s)\
1642 {\
1643 unsigned int v = ((const uint16_t *)(s))[0];\
1644 r = bitcopy_n(v >> (11 - 3), 3);\
1645 g = bitcopy_n(v >> (5 - 2), 2);\
1646 b = bitcopy_n(v << 3, 3);\
1647 }
1648
1649 #define RGB_OUT(d, r, g, b)\
1650 {\
1651 ((uint16_t *)(d))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);\
1652 }
1653
1654 #define BPP 2
1655
1656 #include "imgconvert_template.h"
1657
1658 /* bgr24 handling */
1659
1660 #define RGB_NAME bgr24
1661
1662 #define RGB_IN(r, g, b, s)\
1663 {\
1664 b = (s)[0];\
1665 g = (s)[1];\
1666 r = (s)[2];\
1667 }
1668
1669 #define RGB_OUT(d, r, g, b)\
1670 {\
1671 (d)[0] = b;\
1672 (d)[1] = g;\
1673 (d)[2] = r;\
1674 }
1675
1676 #define BPP 3
1677
1678 #include "imgconvert_template.h"
1679
1680 #undef RGB_IN
1681 #undef RGB_OUT
1682 #undef BPP
1683
1684 /* rgb24 handling */
1685
1686 #define RGB_NAME rgb24
1687 #define FMT_RGB24
1688
1689 #define RGB_IN(r, g, b, s)\
1690 {\
1691 r = (s)[0];\
1692 g = (s)[1];\
1693 b = (s)[2];\
1694 }
1695
1696 #define RGB_OUT(d, r, g, b)\
1697 {\
1698 (d)[0] = r;\
1699 (d)[1] = g;\
1700 (d)[2] = b;\
1701 }
1702
1703 #define BPP 3
1704
1705 #include "imgconvert_template.h"
1706
1707 /* rgb32 handling */
1708
1709 #define RGB_NAME rgb32
1710 #define FMT_RGB32
1711
1712 #define RGB_IN(r, g, b, s)\
1713 {\
1714 unsigned int v = ((const uint32_t *)(s))[0];\
1715 r = (v >> 16) & 0xff;\
1716 g = (v >> 8) & 0xff;\
1717 b = v & 0xff;\
1718 }
1719
1720 #define RGBA_IN(r, g, b, a, s)\
1721 {\
1722 unsigned int v = ((const uint32_t *)(s))[0];\
1723 a = (v >> 24) & 0xff;\
1724 r = (v >> 16) & 0xff;\
1725 g = (v >> 8) & 0xff;\
1726 b = v & 0xff;\
1727 }
1728
1729 #define RGBA_OUT(d, r, g, b, a)\
1730 {\
1731 ((uint32_t *)(d))[0] = (a << 24) | (r << 16) | (g << 8) | b;\
1732 }
1733
1734 #define BPP 4
1735
1736 #include "imgconvert_template.h"
1737
1738 static void mono_to_gray(AVPicture *dst, const AVPicture *src,
1739 int width, int height, int xor_mask)
1740 {
1741 const unsigned char *p;
1742 unsigned char *q;
1743 int v, dst_wrap, src_wrap;
1744 int y, w;
1745
1746 p = src->data[0];
1747 src_wrap = src->linesize[0] - ((width + 7) >> 3);
1748
1749 q = dst->data[0];
1750 dst_wrap = dst->linesize[0] - width;
1751 for(y=0;y<height;y++) {
1752 w = width;
1753 while (w >= 8) {
1754 v = *p++ ^ xor_mask;
1755 q[0] = -(v >> 7);
1756 q[1] = -((v >> 6) & 1);
1757 q[2] = -((v >> 5) & 1);
1758 q[3] = -((v >> 4) & 1);
1759 q[4] = -((v >> 3) & 1);
1760 q[5] = -((v >> 2) & 1);
1761 q[6] = -((v >> 1) & 1);
1762 q[7] = -((v >> 0) & 1);
1763 w -= 8;
1764 q += 8;
1765 }
1766 if (w > 0) {
1767 v = *p++ ^ xor_mask;
1768 do {
1769 q[0] = -((v >> 7) & 1);
1770 q++;
1771 v <<= 1;
1772 } while (--w);
1773 }
1774 p += src_wrap;
1775 q += dst_wrap;
1776 }
1777 }
1778
1779 static void monowhite_to_gray(AVPicture *dst, const AVPicture *src,
1780 int width, int height)
1781 {
1782 mono_to_gray(dst, src, width, height, 0xff);
1783 }
1784
1785 static void monoblack_to_gray(AVPicture *dst, const AVPicture *src,
1786 int width, int height)
1787 {
1788 mono_to_gray(dst, src, width, height, 0x00);
1789 }
1790
1791 static void gray_to_mono(AVPicture *dst, const AVPicture *src,
1792 int width, int height, int xor_mask)
1793 {
1794 int n;
1795 const uint8_t *s;
1796 uint8_t *d;
1797 int j, b, v, n1, src_wrap, dst_wrap, y;
1798
1799 s = src->data[0];
1800 src_wrap = src->linesize[0] - width;
1801
1802 d = dst->data[0];
1803 dst_wrap = dst->linesize[0] - ((width + 7) >> 3);
1804
1805 for(y=0;y<height;y++) {
1806 n = width;
1807 while (n >= 8) {
1808 v = 0;
1809 for(j=0;j<8;j++) {
1810 b = s[0];
1811 s++;
1812 v = (v << 1) | (b >> 7);
1813 }
1814 d[0] = v ^ xor_mask;
1815 d++;
1816 n -= 8;
1817 }
1818 if (n > 0) {
1819 n1 = n;
1820 v = 0;
1821 while (n > 0) {
1822 b = s[0];
1823 s++;
1824 v = (v << 1) | (b >> 7);
1825 n--;
1826 }
1827 d[0] = (v << (8 - (n1 & 7))) ^ xor_mask;
1828 d++;
1829 }
1830 s += src_wrap;
1831 d += dst_wrap;
1832 }
1833 }
1834
1835 static void gray_to_monowhite(AVPicture *dst, const AVPicture *src,
1836 int width, int height)
1837 {
1838 gray_to_mono(dst, src, width, height, 0xff);
1839 }
1840
1841 static void gray_to_monoblack(AVPicture *dst, const AVPicture *src,
1842 int width, int height)
1843 {
1844 gray_to_mono(dst, src, width, height, 0x00);
1845 }
1846
1847 static void gray_to_gray16(AVPicture *dst, const AVPicture *src,
1848 int width, int height)
1849 {
1850 int x, y, src_wrap, dst_wrap;
1851 uint8_t *s, *d;
1852 s = src->data[0];
1853 src_wrap = src->linesize[0] - width;
1854 d = dst->data[0];
1855 dst_wrap = dst->linesize[0] - width * 2;
1856 for(y=0; y<height; y++){
1857 for(x=0; x<width; x++){
1858 *d++ = *s;
1859 *d++ = *s++;
1860 }
1861 s += src_wrap;
1862 d += dst_wrap;
1863 }
1864 }
1865
1866 static void gray16_to_gray(AVPicture *dst, const AVPicture *src,
1867 int width, int height)
1868 {
1869 int x, y, src_wrap, dst_wrap;
1870 uint8_t *s, *d;
1871 s = src->data[0];
1872 src_wrap = src->linesize[0] - width * 2;
1873 d = dst->data[0];
1874 dst_wrap = dst->linesize[0] - width;
1875 for(y=0; y<height; y++){
1876 for(x=0; x<width; x++){
1877 *d++ = *s;
1878 s += 2;
1879 }
1880 s += src_wrap;
1881 d += dst_wrap;
1882 }
1883 }
1884
1885 static void gray16be_to_gray(AVPicture *dst, const AVPicture *src,
1886 int width, int height)
1887 {
1888 gray16_to_gray(dst, src, width, height);
1889 }
1890
1891 static void gray16le_to_gray(AVPicture *dst, const AVPicture *src,
1892 int width, int height)
1893 {
1894 AVPicture tmpsrc = *src;
1895 tmpsrc.data[0]++;
1896 gray16_to_gray(dst, &tmpsrc, width, height);
1897 }
1898
1899 static void gray16_to_gray16(AVPicture *dst, const AVPicture *src,
1900 int width, int height)
1901 {
1902 int x, y, src_wrap, dst_wrap;
1903 uint16_t *s, *d;
1904 s = src->data[0];
1905 src_wrap = (src->linesize[0] - width * 2)/2;
1906 d = dst->data[0];
1907 dst_wrap = (dst->linesize[0] - width * 2)/2;
1908 for(y=0; y<height; y++){
1909 for(x=0; x<width; x++){
1910 *d++ = bswap_16(*s++);
1911 }
1912 s += src_wrap;
1913 d += dst_wrap;
1914 }
1915 }
1916
1917
1918 typedef struct ConvertEntry {
1919 void (*convert)(AVPicture *dst,
1920 const AVPicture *src, int width, int height);
1921 } ConvertEntry;
1922
1923 /* Add each new conversion function in this table. In order to be able
1924 to convert from any format to any format, the following constraints
1925 must be satisfied:
1926
1927 - all FF_COLOR_RGB formats must convert to and from PIX_FMT_RGB24
1928
1929 - all FF_COLOR_GRAY formats must convert to and from PIX_FMT_GRAY8
1930
1931 - all FF_COLOR_RGB formats with alpha must convert to and from PIX_FMT_RGB32
1932
1933 - PIX_FMT_YUV444P and PIX_FMT_YUVJ444P must convert to and from
1934 PIX_FMT_RGB24.
1935
1936 - PIX_FMT_422 must convert to and from PIX_FMT_422P.
1937
1938 The other conversion functions are just optimizations for common cases.
1939 */
1940 static const ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
1941 [PIX_FMT_YUV420P] = {
1942 [PIX_FMT_YUYV422] = {
1943 .convert = yuv420p_to_yuyv422,
1944 },
1945 [PIX_FMT_RGB555] = {
1946 .convert = yuv420p_to_rgb555
1947 },
1948 [PIX_FMT_RGB565] = {
1949 .convert = yuv420p_to_rgb565
1950 },
1951 [PIX_FMT_BGR24] = {
1952 .convert = yuv420p_to_bgr24
1953 },
1954 [PIX_FMT_RGB24] = {
1955 .convert = yuv420p_to_rgb24
1956 },
1957 [PIX_FMT_RGB32] = {
1958 .convert = yuv420p_to_rgb32
1959 },
1960 [PIX_FMT_UYVY422] = {
1961 .convert = yuv420p_to_uyvy422,
1962 },
1963 },
1964 [PIX_FMT_YUV422P] = {
1965 [PIX_FMT_YUYV422] = {
1966 .convert = yuv422p_to_yuyv422,
1967 },
1968 [PIX_FMT_UYVY422] = {
1969 .convert = yuv422p_to_uyvy422,
1970 },
1971 },
1972 [PIX_FMT_YUV444P] = {
1973 [PIX_FMT_RGB24] = {
1974 .convert = yuv444p_to_rgb24
1975 },
1976 },
1977 [PIX_FMT_YUVJ420P] = {
1978 [PIX_FMT_RGB555] = {
1979 .convert = yuvj420p_to_rgb555
1980 },
1981 [PIX_FMT_RGB565] = {
1982 .convert = yuvj420p_to_rgb565
1983 },
1984 [PIX_FMT_BGR24] = {
1985 .convert = yuvj420p_to_bgr24
1986 },
1987 [PIX_FMT_RGB24] = {
1988 .convert = yuvj420p_to_rgb24
1989 },
1990 [PIX_FMT_RGB32] = {
1991 .convert = yuvj420p_to_rgb32
1992 },
1993 },
1994 [PIX_FMT_YUVJ444P] = {
1995 [PIX_FMT_RGB24] = {
1996 .convert = yuvj444p_to_rgb24
1997 },
1998 },
1999 [PIX_FMT_YUYV422] = {
2000 [PIX_FMT_YUV420P] = {
2001 .convert = yuyv422_to_yuv420p,
2002 },
2003 [PIX_FMT_YUV422P] = {
2004 .convert = yuyv422_to_yuv422p,
2005 },
2006 },
2007 [PIX_FMT_UYVY422] = {
2008 [PIX_FMT_YUV420P] = {
2009 .convert = uyvy422_to_yuv420p,
2010 },
2011 [PIX_FMT_YUV422P] = {
2012 .convert = uyvy422_to_yuv422p,
2013 },
2014 },
2015 [PIX_FMT_RGB24] = {
2016 [PIX_FMT_YUV420P] = {
2017 .convert = rgb24_to_yuv420p
2018 },
2019 [PIX_FMT_RGB565] = {
2020 .convert = rgb24_to_rgb565
2021 },
2022 [PIX_FMT_RGB555] = {
2023 .convert = rgb24_to_rgb555
2024 },
2025 [PIX_FMT_RGB32] = {
2026 .convert = rgb24_to_rgb32
2027 },
2028 [PIX_FMT_BGR24] = {
2029 .convert = rgb24_to_bgr24
2030 },
2031 [PIX_FMT_GRAY8] = {
2032 .convert = rgb24_to_gray
2033 },
2034 [PIX_FMT_PAL8] = {
2035 .convert = rgb24_to_pal8
2036 },
2037 [PIX_FMT_YUV444P] = {
2038 .convert = rgb24_to_yuv444p
2039 },
2040 [PIX_FMT_YUVJ420P] = {
2041 .convert = rgb24_to_yuvj420p
2042 },
2043 [PIX_FMT_YUVJ444P] = {
2044 .convert = rgb24_to_yuvj444p
2045 },
2046 },
2047 [PIX_FMT_RGB32] = {
2048 [PIX_FMT_RGB24] = {
2049 .convert = rgb32_to_rgb24
2050 },
2051 [PIX_FMT_BGR24] = {
2052 .convert = rgb32_to_bgr24
2053 },
2054 [PIX_FMT_RGB565] = {
2055 .convert = rgb32_to_rgb565
2056 },
2057 [PIX_FMT_RGB555] = {
2058 .convert = rgb32_to_rgb555
2059 },
2060 [PIX_FMT_PAL8] = {
2061 .convert = rgb32_to_pal8
2062 },
2063 [PIX_FMT_YUV420P] = {
2064 .convert = rgb32_to_yuv420p
2065 },
2066 [PIX_FMT_GRAY8] = {
2067 .convert = rgb32_to_gray
2068 },
2069 },
2070 [PIX_FMT_BGR24] = {
2071 [PIX_FMT_RGB32] = {
2072 .convert = bgr24_to_rgb32
2073 },
2074 [PIX_FMT_RGB24] = {
2075 .convert = bgr24_to_rgb24
2076 },
2077 [PIX_FMT_YUV420P] = {
2078 .convert = bgr24_to_yuv420p
2079 },
2080 [PIX_FMT_GRAY8] = {
2081 .convert = bgr24_to_gray
2082 },
2083 },
2084 [PIX_FMT_RGB555] = {
2085 [PIX_FMT_RGB24] = {
2086 .convert = rgb555_to_rgb24
2087 },
2088 [PIX_FMT_RGB32] = {
2089 .convert = rgb555_to_rgb32
2090 },
2091 [PIX_FMT_YUV420P] = {
2092 .convert = rgb555_to_yuv420p
2093 },
2094 [PIX_FMT_GRAY8] = {
2095 .convert = rgb555_to_gray
2096 },
2097 },
2098 [PIX_FMT_RGB565] = {
2099 [PIX_FMT_RGB32] = {
2100 .convert = rgb565_to_rgb32
2101 },
2102 [PIX_FMT_RGB24] = {
2103 .convert = rgb565_to_rgb24
2104 },
2105 [PIX_FMT_YUV420P] = {
2106 .convert = rgb565_to_yuv420p
2107 },
2108 [PIX_FMT_GRAY8] = {
2109 .convert = rgb565_to_gray
2110 },
2111 },
2112 [PIX_FMT_GRAY16BE] = {
2113 [PIX_FMT_GRAY8] = {
2114 .convert = gray16be_to_gray
2115 },
2116 [PIX_FMT_GRAY16LE] = {
2117 .convert = gray16_to_gray16
2118 },
2119 },
2120 [PIX_FMT_GRAY16LE] = {
2121 [PIX_FMT_GRAY8] = {
2122 .convert = gray16le_to_gray
2123 },
2124 [PIX_FMT_GRAY16BE] = {
2125 .convert = gray16_to_gray16
2126 },
2127 },
2128 [PIX_FMT_GRAY8] = {
2129 [PIX_FMT_RGB555] = {
2130 .convert = gray_to_rgb555
2131 },
2132 [PIX_FMT_RGB565] = {
2133 .convert = gray_to_rgb565
2134 },
2135 [PIX_FMT_RGB24] = {
2136 .convert = gray_to_rgb24
2137 },
2138 [PIX_FMT_BGR24] = {
2139 .convert = gray_to_bgr24
2140 },
2141 [PIX_FMT_RGB32] = {
2142 .convert = gray_to_rgb32
2143 },
2144 [PIX_FMT_MONOWHITE] = {
2145 .convert = gray_to_monowhite
2146 },
2147 [PIX_FMT_MONOBLACK] = {
2148 .convert = gray_to_monoblack
2149 },
2150 [PIX_FMT_GRAY16LE] = {
2151 .convert = gray_to_gray16
2152 },
2153 [PIX_FMT_GRAY16BE] = {
2154 .convert = gray_to_gray16
2155 },
2156 },
2157 [PIX_FMT_MONOWHITE] = {
2158 [PIX_FMT_GRAY8] = {
2159 .convert = monowhite_to_gray
2160 },
2161 },
2162 [PIX_FMT_MONOBLACK] = {
2163 [PIX_FMT_GRAY8] = {
2164 .convert = monoblack_to_gray
2165 },
2166 },
2167 [PIX_FMT_PAL8] = {
2168 [PIX_FMT_RGB555] = {
2169 .convert = pal8_to_rgb555
2170 },
2171 [PIX_FMT_RGB565] = {
2172 .convert = pal8_to_rgb565
2173 },
2174 [PIX_FMT_BGR24] = {
2175 .convert = pal8_to_bgr24
2176 },
2177 [PIX_FMT_RGB24] = {
2178 .convert = pal8_to_rgb24
2179 },
2180 [PIX_FMT_RGB32] = {
2181 .convert = pal8_to_rgb32
2182 },
2183 },
2184 [PIX_FMT_UYYVYY411] = {
2185 [PIX_FMT_YUV411P] = {
2186 .convert = uyyvyy411_to_yuv411p,
2187 },
2188 },
2189
2190 };
2191
2192 int avpicture_alloc(AVPicture *picture,
2193 int pix_fmt, int width, int height)
2194 {
2195 int size;
2196 void *ptr;
2197
2198 size = avpicture_get_size(pix_fmt, width, height);
2199 if(size<0)
2200 goto fail;
2201 ptr = av_malloc(size);
2202 if (!ptr)
2203 goto fail;
2204 avpicture_fill(picture, ptr, pix_fmt, width, height);
2205 return 0;
2206 fail:
2207 memset(picture, 0, sizeof(AVPicture));
2208 return -1;
2209 }
2210
2211 void avpicture_free(AVPicture *picture)
2212 {
2213 av_free(picture->data[0]);
2214 }
2215
2216 /* return true if yuv planar */
2217 static inline int is_yuv_planar(const PixFmtInfo *ps)
2218 {
2219 return (ps->color_type == FF_COLOR_YUV ||
2220 ps->color_type == FF_COLOR_YUV_JPEG) &&
2221 ps->pixel_type == FF_PIXEL_PLANAR;
2222 }
2223
2224 int av_picture_crop(AVPicture *dst, const AVPicture *src,
2225 int pix_fmt, int top_band, int left_band)
2226 {
2227 int y_shift;
2228 int x_shift;
2229
2230 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
2231 return -1;
2232
2233 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
2234 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
2235
2236 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
2237 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
2238 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
2239
2240 dst->linesize[0] = src->linesize[0];
2241 dst->linesize[1] = src->linesize[1];
2242 dst->linesize[2] = src->linesize[2];
2243 return 0;
2244 }
2245
2246 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
2247 int pix_fmt, int padtop, int padbottom, int padleft, int padright,
2248 int *color)
2249 {
2250 uint8_t *optr;
2251 int y_shift;
2252 int x_shift;
2253 int yheight;
2254 int i, y;
2255
2256 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
2257 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
2258
2259 for (i = 0; i < 3; i++) {
2260 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
2261 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
2262
2263 if (padtop || padleft) {
2264 memset(dst->data[i], color[i],
2265 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
2266 }
2267
2268 if (padleft || padright) {
2269 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2270 (dst->linesize[i] - (padright >> x_shift));
2271 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
2272 for (y = 0; y < yheight; y++) {
2273 memset(optr, color[i], (padleft + padright) >> x_shift);
2274 optr += dst->linesize[i];
2275 }
2276 }
2277
2278 if (src) { /* first line */
2279 uint8_t *iptr = src->data[i];
2280 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2281 (padleft >> x_shift);
2282 memcpy(optr, iptr, src->linesize[i]);
2283 iptr += src->linesize[i];
2284 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2285 (dst->linesize[i] - (padright >> x_shift));
2286 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
2287 for (y = 0; y < yheight; y++) {
2288 memset(optr, color[i], (padleft + padright) >> x_shift);
2289 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
2290 src->linesize[i]);
2291 iptr += src->linesize[i];
2292 optr += dst->linesize[i];
2293 }
2294 }
2295
2296 if (padbottom || padright) {
2297 optr = dst->data[i] + dst->linesize[i] *
2298 ((height - padbottom) >> y_shift) - (padright >> x_shift);
2299 memset(optr, color[i],dst->linesize[i] *
2300 (padbottom >> y_shift) + (padright >> x_shift));
2301 }
2302 }
2303 return 0;
2304 }
2305
2306 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2307 void img_copy(AVPicture *dst, const AVPicture *src,
2308 int pix_fmt, int width, int height)
2309 {
2310 av_picture_copy(dst, src, pix_fmt, width, height);
2311 }
2312
2313 int img_crop(AVPicture *dst, const AVPicture *src,
2314 int pix_fmt, int top_band, int left_band)
2315 {
2316 return av_picture_crop(dst, src, pix_fmt, top_band, left_band);
2317 }
2318
2319 int img_pad(AVPicture *dst, const AVPicture *src, int height, int width,
2320 int pix_fmt, int padtop, int padbottom, int padleft, int padright,
2321 int *color)
2322 {
2323 return av_picture_pad(dst, src, height, width, pix_fmt, padtop, padbottom, padleft, padright, color);
2324 }
2325 #endif
2326
2327 #ifndef CONFIG_SWSCALER
2328 /* XXX: always use linesize. Return -1 if not supported */
2329 int img_convert(AVPicture *dst, int dst_pix_fmt,
2330 const AVPicture *src, int src_pix_fmt,
2331 int src_width, int src_height)
2332 {
2333 static int inited;
2334 int i, ret, dst_width, dst_height, int_pix_fmt;
2335 const PixFmtInfo *src_pix, *dst_pix;
2336 const ConvertEntry *ce;
2337 AVPicture tmp1, *tmp = &tmp1;
2338
2339 if (src_pix_fmt < 0 || src_pix_fmt >= PIX_FMT_NB ||
2340 dst_pix_fmt < 0 || dst_pix_fmt >= PIX_FMT_NB)
2341 return -1;
2342 if (src_width <= 0 || src_height <= 0)
2343 return 0;
2344
2345 if (!inited) {
2346 inited = 1;
2347 img_convert_init();
2348 }
2349
2350 dst_width = src_width;
2351 dst_height = src_height;
2352
2353 dst_pix = &pix_fmt_info[dst_pix_fmt];
2354 src_pix = &pix_fmt_info[src_pix_fmt];
2355 if (src_pix_fmt == dst_pix_fmt) {
2356 /* no conversion needed: just copy */
2357 av_picture_copy(dst, src, dst_pix_fmt, dst_width, dst_height);
2358 return 0;
2359 }
2360
2361 ce = &convert_table[src_pix_fmt][dst_pix_fmt];
2362 if (ce->convert) {
2363 /* specific conversion routine */
2364 ce->convert(dst, src, dst_width, dst_height);
2365 return 0;
2366 }
2367
2368 /* gray to YUV */
2369 if (is_yuv_planar(dst_pix) &&
2370 src_pix_fmt == PIX_FMT_GRAY8) {
2371 int w, h, y;
2372 uint8_t *d;
2373
2374 if (dst_pix->color_type == FF_COLOR_YUV_JPEG) {
2375 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2376 src->data[0], src->linesize[0],
2377 dst_width, dst_height);
2378 } else {
2379 img_apply_table(dst->data[0], dst->linesize[0],
2380 src->data[0], src->linesize[0],
2381 dst_width, dst_height,
2382 y_jpeg_to_ccir);
2383 }
2384 /* fill U and V with 128 */
2385 w = dst_width;
2386 h = dst_height;
2387 w >>= dst_pix->x_chroma_shift;
2388 h >>= dst_pix->y_chroma_shift;
2389 for(i = 1; i <= 2; i++) {
2390 d = dst->data[i];
2391 for(y = 0; y< h; y++) {
2392 memset(d, 128, w);
2393 d += dst->linesize[i];
2394 }
2395 }
2396 return 0;
2397 }
2398
2399 /* YUV to gray */
2400 if (is_yuv_planar(src_pix) &&
2401 dst_pix_fmt == PIX_FMT_GRAY8) {
2402 if (src_pix->color_type == FF_COLOR_YUV_JPEG) {
2403 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2404 src->data[0], src->linesize[0],
2405 dst_width, dst_height);
2406 } else {
2407 img_apply_table(dst->data[0], dst->linesize[0],
2408 src->data[0], src->linesize[0],
2409 dst_width, dst_height,
2410 y_ccir_to_jpeg);
2411 }
2412 return 0;
2413 }
2414
2415 /* YUV to YUV planar */
2416 if (is_yuv_planar(dst_pix) && is_yuv_planar(src_pix)) {
2417 int x_shift, y_shift, w, h, xy_shift;
2418 void (*resize_func)(uint8_t *dst, int dst_wrap,
2419 const uint8_t *src, int src_wrap,
2420 int width, int height);
2421
2422 /* compute chroma size of the smallest dimensions */
2423 w = dst_width;
2424 h = dst_height;
2425 if (dst_pix->x_chroma_shift >= src_pix->x_chroma_shift)
2426 w >>= dst_pix->x_chroma_shift;
2427 else
2428 w >>= src_pix->x_chroma_shift;
2429 if (dst_pix->y_chroma_shift >= src_pix->y_chroma_shift)
2430 h >>= dst_pix->y_chroma_shift;
2431 else
2432 h >>= src_pix->y_chroma_shift;
2433
2434 x_shift = (dst_pix->x_chroma_shift - src_pix->x_chroma_shift);
2435 y_shift = (dst_pix->y_chroma_shift - src_pix->y_chroma_shift);
2436 xy_shift = ((x_shift & 0xf) << 4) | (y_shift & 0xf);
2437 /* there must be filters for conversion at least from and to
2438 YUV444 format */
2439 switch(xy_shift) {
2440 case 0x00:
2441 resize_func = ff_img_copy_plane;
2442 break;
2443 case 0x10:
2444 resize_func = shrink21;
2445 break;
2446 case 0x20:
2447 resize_func = shrink41;
2448 break;
2449 case 0x01:
2450 resize_func = shrink12;
2451 break;
2452 case 0x11:
2453 resize_func = ff_shrink22;
2454 break;
2455 case 0x22:
2456 resize_func = ff_shrink44;
2457 break;
2458 case 0xf0:
2459 resize_func = grow21;
2460 break;
2461 case 0x0f:
2462 resize_func = grow12;
2463 break;
2464 case 0xe0:
2465 resize_func = grow41;
2466 break;
2467 case 0xff:
2468 resize_func = grow22;
2469 break;
2470 case 0xee:
2471 resize_func = grow44;
2472 break;
2473 case 0xf1:
2474 resize_func = conv411;
2475 break;
2476 default:
2477 /* currently not handled */
2478 goto no_chroma_filter;
2479 }
2480
2481 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2482 src->data[0], src->linesize[0],
2483 dst_width, dst_height);
2484
2485 for(i = 1;i <= 2; i++)
2486 resize_func(dst->data[i], dst->linesize[i],
2487 src->data[i], src->linesize[i],
2488 dst_width>>dst_pix->x_chroma_shift, dst_height>>dst_pix->y_chroma_shift);
2489 /* if yuv color space conversion is needed, we do it here on
2490 the destination image */
2491 if (dst_pix->color_type != src_pix->color_type) {
2492 const uint8_t *y_table, *c_table;
2493 if (dst_pix->color_type == FF_COLOR_YUV) {
2494 y_table = y_jpeg_to_ccir;
2495 c_table = c_jpeg_to_ccir;
2496 } else {
2497 y_table = y_ccir_to_jpeg;
2498 c_table = c_ccir_to_jpeg;
2499 }
2500 img_apply_table(dst->data[0], dst->linesize[0],
2501 dst->data[0], dst->linesize[0],
2502 dst_width, dst_height,
2503 y_table);
2504
2505 for(i = 1;i <= 2; i++)
2506 img_apply_table(dst->data[i], dst->linesize[i],
2507 dst->data[i], dst->linesize[i],
2508 dst_width>>dst_pix->x_chroma_shift,
2509 dst_height>>dst_pix->y_chroma_shift,
2510 c_table);
2511 }
2512 return 0;
2513 }
2514 no_chroma_filter:
2515
2516 /* try to use an intermediate format */
2517 if (src_pix_fmt == PIX_FMT_YUYV422 ||
2518 dst_pix_fmt == PIX_FMT_YUYV422) {
2519 /* specific case: convert to YUV422P first */
2520 int_pix_fmt = PIX_FMT_YUV422P;
2521 } else if (src_pix_fmt == PIX_FMT_UYVY422 ||
2522 dst_pix_fmt == PIX_FMT_UYVY422) {
2523 /* specific case: convert to YUV422P first */
2524 int_pix_fmt = PIX_FMT_YUV422P;
2525 } else if (src_pix_fmt == PIX_FMT_UYYVYY411 ||
2526 dst_pix_fmt == PIX_FMT_UYYVYY411) {
2527 /* specific case: convert to YUV411P first */
2528 int_pix_fmt = PIX_FMT_YUV411P;
2529 } else if ((src_pix->color_type == FF_COLOR_GRAY &&
2530 src_pix_fmt != PIX_FMT_GRAY8) ||
2531 (dst_pix->color_type == FF_COLOR_GRAY &&
2532 dst_pix_fmt != PIX_FMT_GRAY8)) {
2533 /* gray8 is the normalized format */
2534 int_pix_fmt = PIX_FMT_GRAY8;
2535 } else if ((is_yuv_planar(src_pix) &&
2536 src_pix_fmt != PIX_FMT_YUV444P &&
2537 src_pix_fmt != PIX_FMT_YUVJ444P)) {
2538 /* yuv444 is the normalized format */
2539 if (src_pix->color_type == FF_COLOR_YUV_JPEG)
2540 int_pix_fmt = PIX_FMT_YUVJ444P;
2541 else
2542 int_pix_fmt = PIX_FMT_YUV444P;
2543 } else if ((is_yuv_planar(dst_pix) &&
2544 dst_pix_fmt != PIX_FMT_YUV444P &&
2545 dst_pix_fmt != PIX_FMT_YUVJ444P)) {
2546 /* yuv444 is the normalized format */
2547 if (dst_pix->color_type == FF_COLOR_YUV_JPEG)
2548 int_pix_fmt = PIX_FMT_YUVJ444P;
2549 else
2550 int_pix_fmt = PIX_FMT_YUV444P;
2551 } else {
2552 /* the two formats are rgb or gray8 or yuv[j]444p */
2553 if (src_pix->is_alpha && dst_pix->is_alpha)
2554 int_pix_fmt = PIX_FMT_RGB32;
2555 else
2556 int_pix_fmt = PIX_FMT_RGB24;
2557 }
2558 if (src_pix_fmt == int_pix_fmt)
2559 return -1;
2560 if (avpicture_alloc(tmp, int_pix_fmt, dst_width, dst_height) < 0)
2561 return -1;
2562 ret = -1;
2563 if (img_convert(tmp, int_pix_fmt,
2564 src, src_pix_fmt, src_width, src_height) < 0)
2565 goto fail1;
2566 if (img_convert(dst, dst_pix_fmt,
2567 tmp, int_pix_fmt, dst_width, dst_height) < 0)
2568 goto fail1;
2569 ret = 0;
2570 fail1:
2571 avpicture_free(tmp);
2572 return ret;
2573 }
2574 #endif
2575
2576 /* NOTE: we scan all the pixels to have an exact information */
2577 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
2578 {
2579 const unsigned char *p;
2580 int src_wrap, ret, x, y;
2581 unsigned int a;
2582 uint32_t *palette = (uint32_t *)src->data[1];
2583
2584 p = src->data[0];
2585 src_wrap = src->linesize[0] - width;
2586 ret = 0;
2587 for(y=0;y<height;y++) {
2588 for(x=0;x<width;x++) {
2589 a = palette[p[0]] >> 24;
2590 if (a == 0x00) {
2591 ret |= FF_ALPHA_TRANSP;
2592 } else if (a != 0xff) {
2593 ret |= FF_ALPHA_SEMI_TRANSP;
2594 }
2595 p++;
2596 }
2597 p += src_wrap;
2598 }
2599 return ret;
2600 }
2601
2602 int img_get_alpha_info(const AVPicture *src,
2603 int pix_fmt, int width, int height)
2604 {
2605 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
2606 int ret;
2607
2608 pf = &pix_fmt_info[pix_fmt];
2609 /* no alpha can be represented in format */
2610 if (!pf->is_alpha)
2611 return 0;
2612 switch(pix_fmt) {
2613 case PIX_FMT_RGB32:
2614 ret = get_alpha_info_rgb32(src, width, height);
2615 break;
2616 case PIX_FMT_PAL8:
2617 ret = get_alpha_info_pal8(src, width, height);
2618 break;
2619 default:
2620 /* we do not know, so everything is indicated */
2621 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
2622 break;
2623 }
2624 return ret;
2625 }
2626
2627 #ifdef HAVE_MMX
2628 #define DEINT_INPLACE_LINE_LUM \
2629 movd_m2r(lum_m4[0],mm0);\
2630 movd_m2r(lum_m3[0],mm1);\
2631 movd_m2r(lum_m2[0],mm2);\
2632 movd_m2r(lum_m1[0],mm3);\
2633 movd_m2r(lum[0],mm4);\
2634 punpcklbw_r2r(mm7,mm0);\
2635 movd_r2m(mm2,lum_m4[0]);\
2636 punpcklbw_r2r(mm7,mm1);\
2637 punpcklbw_r2r(mm7,mm2);\
2638 punpcklbw_r2r(mm7,mm3);\
2639 punpcklbw_r2r(mm7,mm4);\
2640 paddw_r2r(mm3,mm1);\
2641 psllw_i2r(1,mm2);\
2642 paddw_r2r(mm4,mm0);\
2643 psllw_i2r(2,mm1);\
2644 paddw_r2r(mm6,mm2);\
2645 paddw_r2r(mm2,mm1);\
2646 psubusw_r2r(mm0,mm1);\
2647 psrlw_i2r(3,mm1);\
2648 packuswb_r2r(mm7,mm1);\
2649 movd_r2m(mm1,lum_m2[0]);
2650
2651 #define DEINT_LINE_LUM \
2652 movd_m2r(lum_m4[0],mm0);\
2653 movd_m2r(lum_m3[0],mm1);\
2654 movd_m2r(lum_m2[0],mm2);\
2655 movd_m2r(lum_m1[0],mm3);\
2656 movd_m2r(lum[0],mm4);\
2657 punpcklbw_r2r(mm7,mm0);\
2658 punpcklbw_r2r(mm7,mm1);\
2659 punpcklbw_r2r(mm7,mm2);\
2660 punpcklbw_r2r(mm7,mm3);\
2661 punpcklbw_r2r(mm7,mm4);\
2662 paddw_r2r(mm3,mm1);\
2663 psllw_i2r(1,mm2);\
2664 paddw_r2r(mm4,mm0);\
2665 psllw_i2r(2,mm1);\
2666 paddw_r2r(mm6,mm2);\
2667 paddw_r2r(mm2,mm1);\
2668 psubusw_r2r(mm0,mm1);\
2669 psrlw_i2r(3,mm1);\
2670 packuswb_r2r(mm7,mm1);\
2671 movd_r2m(mm1,dst[0]);
2672 #endif
2673
2674 /* filter parameters: [-1 4 2 4 -1] // 8 */
2675 static void deinterlace_line(uint8_t *dst,
2676 const uint8_t *lum_m4, const uint8_t *lum_m3,
2677 const uint8_t *lum_m2, const uint8_t *lum_m1,
2678 const uint8_t *lum,
2679 int size)
2680 {
2681 #ifndef HAVE_MMX
2682 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2683 int sum;
2684
2685 for(;size > 0;size--) {
2686 sum = -lum_m4[0];
2687 sum += lum_m3[0] << 2;
2688 sum += lum_m2[0] << 1;
2689 sum += lum_m1[0] << 2;
2690 sum += -lum[0];
2691 dst[0] = cm[(sum + 4) >> 3];
2692 lum_m4++;
2693 lum_m3++;
2694 lum_m2++;
2695 lum_m1++;
2696 lum++;
2697 dst++;
2698 }
2699 #else
2700
2701 {
2702 mmx_t rounder;
2703 rounder.uw[0]=4;
2704 rounder.uw[1]=4;
2705 rounder.uw[2]=4;
2706 rounder.uw[3]=4;
2707 pxor_r2r(mm7,mm7);
2708 movq_m2r(rounder,mm6);
2709 }
2710 for (;size > 3; size-=4) {
2711 DEINT_LINE_LUM
2712 lum_m4+=4;
2713 lum_m3+=4;
2714 lum_m2+=4;
2715 lum_m1+=4;
2716 lum+=4;
2717 dst+=4;
2718 }
2719 #endif
2720 }
2721 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
2722 int size)
2723 {
2724 #ifndef HAVE_MMX
2725 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2726 int sum;
2727
2728 for(;size > 0;size--) {
2729 sum = -lum_m4[0];
2730 sum += lum_m3[0] << 2;
2731 sum += lum_m2[0] << 1;
2732 lum_m4[0]=lum_m2[0];
2733 sum += lum_m1[0] << 2;
2734 sum += -lum[0];
2735 lum_m2[0] = cm[(sum + 4) >> 3];
2736 lum_m4++;
2737 lum_m3++;
2738 lum_m2++;
2739 lum_m1++;
2740 lum++;
2741 }
2742 #else
2743
2744 {
2745 mmx_t rounder;
2746 rounder.uw[0]=4;
2747 rounder.uw[1]=4;
2748 rounder.uw[2]=4;
2749 rounder.uw[3]=4;
2750 pxor_r2r(mm7,mm7);
2751 movq_m2r(rounder,mm6);
2752 }
2753 for (;size > 3; size-=4) {
2754 DEINT_INPLACE_LINE_LUM
2755 lum_m4+=4;
2756 lum_m3+=4;
2757 lum_m2+=4;
2758 lum_m1+=4;
2759 lum+=4;
2760 }
2761 #endif
2762 }
2763
2764 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
2765 top field is copied as is, but the bottom field is deinterlaced
2766 against the top field. */
2767 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
2768 const uint8_t *src1, int src_wrap,
2769 int width, int height)
2770 {
2771 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
2772 int y;
2773
2774 src_m2 = src1;
2775 src_m1 = src1;
2776 src_0=&src_m1[src_wrap];
2777 src_p1=&src_0[src_wrap];
2778 src_p2=&src_p1[src_wrap];
2779 for(y=0;y<(height-2);y+=2) {
2780 memcpy(dst,src_m1,width);
2781 dst += dst_wrap;
2782 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
2783 src_m2 = src_0;
2784 src_m1 = src_p1;
2785 src_0 = src_p2;
2786 src_p1 += 2*src_wrap;
2787 src_p2 += 2*src_wrap;
2788 dst += dst_wrap;
2789 }
2790 memcpy(dst,src_m1,width);
2791 dst += dst_wrap;
2792 /* do last line */
2793 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
2794 }
2795
2796 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
2797 int width, int height)
2798 {
2799 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
2800 int y;
2801 uint8_t *buf;
2802 buf = (uint8_t*)av_malloc(width);
2803
2804 src_m1 = src1;
2805 memcpy(buf,src_m1,width);
2806 src_0=&src_m1[src_wrap];
2807 src_p1=&src_0[src_wrap];
2808 src_p2=&src_p1[src_wrap];
2809 for(y=0;y<(height-2);y+=2) {
2810 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
2811 src_m1 = src_p1;
2812 src_0 = src_p2;
2813 src_p1 += 2*src_wrap;
2814 src_p2 += 2*src_wrap;
2815 }
2816 /* do last line */
2817 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
2818 av_free(buf);
2819 }
2820
2821 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2822 int pix_fmt, int width, int height)
2823 {
2824 int i;
2825
2826 if (pix_fmt != PIX_FMT_YUV420P &&
2827 pix_fmt != PIX_FMT_YUV422P &&
2828 pix_fmt != PIX_FMT_YUV444P &&
2829 pix_fmt != PIX_FMT_YUV411P &&
2830 pix_fmt != PIX_FMT_GRAY8)
2831 return -1;
2832 if ((width & 3) != 0 || (height & 3) != 0)
2833 return -1;
2834
2835 for(i=0;i<3;i++) {
2836 if (i == 1) {
2837 switch(pix_fmt) {
2838 case PIX_FMT_YUV420P:
2839 width >>= 1;
2840 height >>= 1;
2841 break;
2842 case PIX_FMT_YUV422P:
2843 width >>= 1;
2844 break;
2845 case PIX_FMT_YUV411P:
2846 width >>= 2;
2847 break;
2848 default:
2849 break;
2850 }
2851 if (pix_fmt == PIX_FMT_GRAY8) {
2852 break;
2853 }
2854 }
2855 if (src == dst) {
2856 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
2857 width, height);
2858 } else {
2859 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
2860 src->data[i], src->linesize[i],
2861 width, height);
2862 }
2863 }
2864 emms_c();
2865 return 0;
2866 }
2867
lucabe's unfinished and experimental patches for ffmpeg