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Remove unused types
[ffmpeg-lucabe.git] / libavcodec / imgconvert.c
blob72a5bbefb6860ddc527bf3d54c66b249716f7276
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(int64_t 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(int64_t 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= -((-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 h;
898 int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
899 h = height;
900 if (i == 1 || i == 2) {
901 h= -((-height)>>pf->y_chroma_shift);
902 }
903 ff_img_copy_plane(dst->data[i], dst->linesize[i],
904 src->data[i], src->linesize[i],
905 bwidth, h);
906 }
907 break;
908 case FF_PIXEL_PALETTE:
909 ff_img_copy_plane(dst->data[0], dst->linesize[0],
910 src->data[0], src->linesize[0],
911 width, height);
912 /* copy the palette */
913 ff_img_copy_plane(dst->data[1], dst->linesize[1],
914 src->data[1], src->linesize[1],
915 4, 256);
916 break;
917 }
918 }
919
920 /* XXX: totally non optimized */
921
922 static void yuyv422_to_yuv420p(AVPicture *dst, const AVPicture *src,
923 int width, int height)
924 {
925 const uint8_t *p, *p1;
926 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
927 int w;
928
929 p1 = src->data[0];
930 lum1 = dst->data[0];
931 cb1 = dst->data[1];
932 cr1 = dst->data[2];
933
934 for(;height >= 1; height -= 2) {
935 p = p1;
936 lum = lum1;
937 cb = cb1;
938 cr = cr1;
939 for(w = width; w >= 2; w -= 2) {
940 lum[0] = p[0];
941 cb[0] = p[1];
942 lum[1] = p[2];
943 cr[0] = p[3];
944 p += 4;
945 lum += 2;
946 cb++;
947 cr++;
948 }
949 if (w) {
950 lum[0] = p[0];
951 cb[0] = p[1];
952 cr[0] = p[3];
953 cb++;
954 cr++;
955 }
956 p1 += src->linesize[0];
957 lum1 += dst->linesize[0];
958 if (height>1) {
959 p = p1;
960 lum = lum1;
961 for(w = width; w >= 2; w -= 2) {
962 lum[0] = p[0];
963 lum[1] = p[2];
964 p += 4;
965 lum += 2;
966 }
967 if (w) {
968 lum[0] = p[0];
969 }
970 p1 += src->linesize[0];
971 lum1 += dst->linesize[0];
972 }
973 cb1 += dst->linesize[1];
974 cr1 += dst->linesize[2];
975 }
976 }
977
978 static void uyvy422_to_yuv420p(AVPicture *dst, const AVPicture *src,
979 int width, int height)
980 {
981 const uint8_t *p, *p1;
982 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
983 int w;
984
985 p1 = src->data[0];
986
987 lum1 = dst->data[0];
988 cb1 = dst->data[1];
989 cr1 = dst->data[2];
990
991 for(;height >= 1; height -= 2) {
992 p = p1;
993 lum = lum1;
994 cb = cb1;
995 cr = cr1;
996 for(w = width; w >= 2; w -= 2) {
997 lum[0] = p[1];
998 cb[0] = p[0];
999 lum[1] = p[3];
1000 cr[0] = p[2];
1001 p += 4;
1002 lum += 2;
1003 cb++;
1004 cr++;
1005 }
1006 if (w) {
1007 lum[0] = p[1];
1008 cb[0] = p[0];
1009 cr[0] = p[2];
1010 cb++;
1011 cr++;
1012 }
1013 p1 += src->linesize[0];
1014 lum1 += dst->linesize[0];
1015 if (height>1) {
1016 p = p1;
1017 lum = lum1;
1018 for(w = width; w >= 2; w -= 2) {
1019 lum[0] = p[1];
1020 lum[1] = p[3];
1021 p += 4;
1022 lum += 2;
1023 }
1024 if (w) {
1025 lum[0] = p[1];
1026 }
1027 p1 += src->linesize[0];
1028 lum1 += dst->linesize[0];
1029 }
1030 cb1 += dst->linesize[1];
1031 cr1 += dst->linesize[2];
1032 }
1033 }
1034
1035
1036 static void uyvy422_to_yuv422p(AVPicture *dst, const AVPicture *src,
1037 int width, int height)
1038 {
1039 const uint8_t *p, *p1;
1040 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1041 int w;
1042
1043 p1 = src->data[0];
1044 lum1 = dst->data[0];
1045 cb1 = dst->data[1];
1046 cr1 = dst->data[2];
1047 for(;height > 0; height--) {
1048 p = p1;
1049 lum = lum1;
1050 cb = cb1;
1051 cr = cr1;
1052 for(w = width; w >= 2; w -= 2) {
1053 lum[0] = p[1];
1054 cb[0] = p[0];
1055 lum[1] = p[3];
1056 cr[0] = p[2];
1057 p += 4;
1058 lum += 2;
1059 cb++;
1060 cr++;
1061 }
1062 p1 += src->linesize[0];
1063 lum1 += dst->linesize[0];
1064 cb1 += dst->linesize[1];
1065 cr1 += dst->linesize[2];
1066 }
1067 }
1068
1069
1070 static void yuyv422_to_yuv422p(AVPicture *dst, const AVPicture *src,
1071 int width, int height)
1072 {
1073 const uint8_t *p, *p1;
1074 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1075 int w;
1076
1077 p1 = src->data[0];
1078 lum1 = dst->data[0];
1079 cb1 = dst->data[1];
1080 cr1 = dst->data[2];
1081 for(;height > 0; height--) {
1082 p = p1;
1083 lum = lum1;
1084 cb = cb1;
1085 cr = cr1;
1086 for(w = width; w >= 2; w -= 2) {
1087 lum[0] = p[0];
1088 cb[0] = p[1];
1089 lum[1] = p[2];
1090 cr[0] = p[3];
1091 p += 4;
1092 lum += 2;
1093 cb++;
1094 cr++;
1095 }
1096 p1 += src->linesize[0];
1097 lum1 += dst->linesize[0];
1098 cb1 += dst->linesize[1];
1099 cr1 += dst->linesize[2];
1100 }
1101 }
1102
1103 static void yuv422p_to_yuyv422(AVPicture *dst, const AVPicture *src,
1104 int width, int height)
1105 {
1106 uint8_t *p, *p1;
1107 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1108 int w;
1109
1110 p1 = dst->data[0];
1111 lum1 = src->data[0];
1112 cb1 = src->data[1];
1113 cr1 = src->data[2];
1114 for(;height > 0; height--) {
1115 p = p1;
1116 lum = lum1;
1117 cb = cb1;
1118 cr = cr1;
1119 for(w = width; w >= 2; w -= 2) {
1120 p[0] = lum[0];
1121 p[1] = cb[0];
1122 p[2] = lum[1];
1123 p[3] = cr[0];
1124 p += 4;
1125 lum += 2;
1126 cb++;
1127 cr++;
1128 }
1129 p1 += dst->linesize[0];
1130 lum1 += src->linesize[0];
1131 cb1 += src->linesize[1];
1132 cr1 += src->linesize[2];
1133 }
1134 }
1135
1136 static void yuv422p_to_uyvy422(AVPicture *dst, const AVPicture *src,
1137 int width, int height)
1138 {
1139 uint8_t *p, *p1;
1140 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1141 int w;
1142
1143 p1 = dst->data[0];
1144 lum1 = src->data[0];
1145 cb1 = src->data[1];
1146 cr1 = src->data[2];
1147 for(;height > 0; height--) {
1148 p = p1;
1149 lum = lum1;
1150 cb = cb1;
1151 cr = cr1;
1152 for(w = width; w >= 2; w -= 2) {
1153 p[1] = lum[0];
1154 p[0] = cb[0];
1155 p[3] = lum[1];
1156 p[2] = cr[0];
1157 p += 4;
1158 lum += 2;
1159 cb++;
1160 cr++;
1161 }
1162 p1 += dst->linesize[0];
1163 lum1 += src->linesize[0];
1164 cb1 += src->linesize[1];
1165 cr1 += src->linesize[2];
1166 }
1167 }
1168
1169 static void uyyvyy411_to_yuv411p(AVPicture *dst, const AVPicture *src,
1170 int width, int height)
1171 {
1172 const uint8_t *p, *p1;
1173 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1174 int w;
1175
1176 p1 = src->data[0];
1177 lum1 = dst->data[0];
1178 cb1 = dst->data[1];
1179 cr1 = dst->data[2];
1180 for(;height > 0; height--) {
1181 p = p1;
1182 lum = lum1;
1183 cb = cb1;
1184 cr = cr1;
1185 for(w = width; w >= 4; w -= 4) {
1186 cb[0] = p[0];
1187 lum[0] = p[1];
1188 lum[1] = p[2];
1189 cr[0] = p[3];
1190 lum[2] = p[4];
1191 lum[3] = p[5];
1192 p += 6;
1193 lum += 4;
1194 cb++;
1195 cr++;
1196 }
1197 p1 += src->linesize[0];
1198 lum1 += dst->linesize[0];
1199 cb1 += dst->linesize[1];
1200 cr1 += dst->linesize[2];
1201 }
1202 }
1203
1204
1205 static void yuv420p_to_yuyv422(AVPicture *dst, const AVPicture *src,
1206 int width, int height)
1207 {
1208 int w, h;
1209 uint8_t *line1, *line2, *linesrc = dst->data[0];
1210 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
1211 uint8_t *cb1, *cb2 = src->data[1];
1212 uint8_t *cr1, *cr2 = src->data[2];
1213
1214 for(h = height / 2; h--;) {
1215 line1 = linesrc;
1216 line2 = linesrc + dst->linesize[0];
1217
1218 lum1 = lumsrc;
1219 lum2 = lumsrc + src->linesize[0];
1220
1221 cb1 = cb2;
1222 cr1 = cr2;
1223
1224 for(w = width / 2; w--;) {
1225 *line1++ = *lum1++; *line2++ = *lum2++;
1226 *line1++ = *line2++ = *cb1++;
1227 *line1++ = *lum1++; *line2++ = *lum2++;
1228 *line1++ = *line2++ = *cr1++;
1229 }
1230
1231 linesrc += dst->linesize[0] * 2;
1232 lumsrc += src->linesize[0] * 2;
1233 cb2 += src->linesize[1];
1234 cr2 += src->linesize[2];
1235 }
1236 }
1237
1238 static void yuv420p_to_uyvy422(AVPicture *dst, const AVPicture *src,
1239 int width, int height)
1240 {
1241 int w, h;
1242 uint8_t *line1, *line2, *linesrc = dst->data[0];
1243 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
1244 uint8_t *cb1, *cb2 = src->data[1];
1245 uint8_t *cr1, *cr2 = src->data[2];
1246
1247 for(h = height / 2; h--;) {
1248 line1 = linesrc;
1249 line2 = linesrc + dst->linesize[0];
1250
1251 lum1 = lumsrc;
1252 lum2 = lumsrc + src->linesize[0];
1253
1254 cb1 = cb2;
1255 cr1 = cr2;
1256
1257 for(w = width / 2; w--;) {
1258 *line1++ = *line2++ = *cb1++;
1259 *line1++ = *lum1++; *line2++ = *lum2++;
1260 *line1++ = *line2++ = *cr1++;
1261 *line1++ = *lum1++; *line2++ = *lum2++;
1262 }
1263
1264 linesrc += dst->linesize[0] * 2;
1265 lumsrc += src->linesize[0] * 2;
1266 cb2 += src->linesize[1];
1267 cr2 += src->linesize[2];
1268 }
1269 }
1270
1271 /* 2x2 -> 1x1 */
1272 void ff_shrink22(uint8_t *dst, int dst_wrap,
1273 const uint8_t *src, int src_wrap,
1274 int width, int height)
1275 {
1276 int w;
1277 const uint8_t *s1, *s2;
1278 uint8_t *d;
1279
1280 for(;height > 0; height--) {
1281 s1 = src;
1282 s2 = s1 + src_wrap;
1283 d = dst;
1284 for(w = width;w >= 4; w-=4) {
1285 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1286 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1287 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1288 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1289 s1 += 8;
1290 s2 += 8;
1291 d += 4;
1292 }
1293 for(;w > 0; w--) {
1294 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1295 s1 += 2;
1296 s2 += 2;
1297 d++;
1298 }
1299 src += 2 * src_wrap;
1300 dst += dst_wrap;
1301 }
1302 }
1303
1304 /* 4x4 -> 1x1 */
1305 void ff_shrink44(uint8_t *dst, int dst_wrap,
1306 const uint8_t *src, int src_wrap,
1307 int width, int height)
1308 {
1309 int w;
1310 const uint8_t *s1, *s2, *s3, *s4;
1311 uint8_t *d;
1312
1313 for(;height > 0; height--) {
1314 s1 = src;
1315 s2 = s1 + src_wrap;
1316 s3 = s2 + src_wrap;
1317 s4 = s3 + src_wrap;
1318 d = dst;
1319 for(w = width;w > 0; w--) {
1320 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1321 s2[0] + s2[1] + s2[2] + s2[3] +
1322 s3[0] + s3[1] + s3[2] + s3[3] +
1323 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1324 s1 += 4;
1325 s2 += 4;
1326 s3 += 4;
1327 s4 += 4;
1328 d++;
1329 }
1330 src += 4 * src_wrap;
1331 dst += dst_wrap;
1332 }
1333 }
1334
1335 /* 8x8 -> 1x1 */
1336 void ff_shrink88(uint8_t *dst, int dst_wrap,
1337 const uint8_t *src, int src_wrap,
1338 int width, int height)
1339 {
1340 int w, i;
1341
1342 for(;height > 0; height--) {
1343 for(w = width;w > 0; w--) {
1344 int tmp=0;
1345 for(i=0; i<8; i++){
1346 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1347 src += src_wrap;
1348 }
1349 *(dst++) = (tmp + 32)>>6;
1350 src += 8 - 8*src_wrap;
1351 }
1352 src += 8*src_wrap - 8*width;
1353 dst += dst_wrap - width;
1354 }
1355 }
1356
1357 /* XXX: add jpeg quantize code */
1358
1359 #define TRANSP_INDEX (6*6*6)
1360
1361 /* this is maybe slow, but allows for extensions */
1362 static inline unsigned char gif_clut_index(uint8_t r, uint8_t g, uint8_t b)
1363 {
1364 return (((r) / 47) % 6) * 6 * 6 + (((g) / 47) % 6) * 6 + (((b) / 47) % 6);
1365 }
1366
1367 static void build_rgb_palette(uint8_t *palette, int has_alpha)
1368 {
1369 uint32_t *pal;
1370 static const uint8_t pal_value[6] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
1371 int i, r, g, b;
1372
1373 pal = (uint32_t *)palette;
1374 i = 0;
1375 for(r = 0; r < 6; r++) {
1376 for(g = 0; g < 6; g++) {
1377 for(b = 0; b < 6; b++) {
1378 pal[i++] = (0xff << 24) | (pal_value[r] << 16) |
1379 (pal_value[g] << 8) | pal_value[b];
1380 }
1381 }
1382 }
1383 if (has_alpha)
1384 pal[i++] = 0;
1385 while (i < 256)
1386 pal[i++] = 0xff000000;
1387 }
1388
1389 /* copy bit n to bits 0 ... n - 1 */
1390 static inline unsigned int bitcopy_n(unsigned int a, int n)
1391 {
1392 int mask;
1393 mask = (1 << n) - 1;
1394 return (a & (0xff & ~mask)) | ((-((a >> n) & 1)) & mask);
1395 }
1396
1397 /* rgb555 handling */
1398
1399 #define RGB_NAME rgb555
1400
1401 #define RGB_IN(r, g, b, s)\
1402 {\
1403 unsigned int v = ((const uint16_t *)(s))[0];\
1404 r = bitcopy_n(v >> (10 - 3), 3);\
1405 g = bitcopy_n(v >> (5 - 3), 3);\
1406 b = bitcopy_n(v << 3, 3);\
1407 }
1408
1409
1410 #define RGB_OUT(d, r, g, b)\
1411 {\
1412 ((uint16_t *)(d))[0] = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);\
1413 }
1414
1415 #define BPP 2
1416
1417 #include "imgconvert_template.c"
1418
1419 /* rgb565 handling */
1420
1421 #define RGB_NAME rgb565
1422
1423 #define RGB_IN(r, g, b, s)\
1424 {\
1425 unsigned int v = ((const uint16_t *)(s))[0];\
1426 r = bitcopy_n(v >> (11 - 3), 3);\
1427 g = bitcopy_n(v >> (5 - 2), 2);\
1428 b = bitcopy_n(v << 3, 3);\
1429 }
1430
1431 #define RGB_OUT(d, r, g, b)\
1432 {\
1433 ((uint16_t *)(d))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);\
1434 }
1435
1436 #define BPP 2
1437
1438 #include "imgconvert_template.c"
1439
1440 /* bgr24 handling */
1441
1442 #define RGB_NAME bgr24
1443
1444 #define RGB_IN(r, g, b, s)\
1445 {\
1446 b = (s)[0];\
1447 g = (s)[1];\
1448 r = (s)[2];\
1449 }
1450
1451 #define RGB_OUT(d, r, g, b)\
1452 {\
1453 (d)[0] = b;\
1454 (d)[1] = g;\
1455 (d)[2] = r;\
1456 }
1457
1458 #define BPP 3
1459
1460 #include "imgconvert_template.c"
1461
1462 #undef RGB_IN
1463 #undef RGB_OUT
1464 #undef BPP
1465
1466 /* rgb24 handling */
1467
1468 #define RGB_NAME rgb24
1469 #define FMT_RGB24
1470
1471 #define RGB_IN(r, g, b, s)\
1472 {\
1473 r = (s)[0];\
1474 g = (s)[1];\
1475 b = (s)[2];\
1476 }
1477
1478 #define RGB_OUT(d, r, g, b)\
1479 {\
1480 (d)[0] = r;\
1481 (d)[1] = g;\
1482 (d)[2] = b;\
1483 }
1484
1485 #define BPP 3
1486
1487 #include "imgconvert_template.c"
1488
1489 /* rgb32 handling */
1490
1491 #define RGB_NAME rgb32
1492 #define FMT_RGB32
1493
1494 #define RGB_IN(r, g, b, s)\
1495 {\
1496 unsigned int v = ((const uint32_t *)(s))[0];\
1497 r = (v >> 16) & 0xff;\
1498 g = (v >> 8) & 0xff;\
1499 b = v & 0xff;\
1500 }
1501
1502 #define RGBA_IN(r, g, b, a, s)\
1503 {\
1504 unsigned int v = ((const uint32_t *)(s))[0];\
1505 a = (v >> 24) & 0xff;\
1506 r = (v >> 16) & 0xff;\
1507 g = (v >> 8) & 0xff;\
1508 b = v & 0xff;\
1509 }
1510
1511 #define RGBA_OUT(d, r, g, b, a)\
1512 {\
1513 ((uint32_t *)(d))[0] = (a << 24) | (r << 16) | (g << 8) | b;\
1514 }
1515
1516 #define BPP 4
1517
1518 #include "imgconvert_template.c"
1519
1520 static void mono_to_gray(AVPicture *dst, const AVPicture *src,
1521 int width, int height, int xor_mask)
1522 {
1523 const unsigned char *p;
1524 unsigned char *q;
1525 int v, dst_wrap, src_wrap;
1526 int y, w;
1527
1528 p = src->data[0];
1529 src_wrap = src->linesize[0] - ((width + 7) >> 3);
1530
1531 q = dst->data[0];
1532 dst_wrap = dst->linesize[0] - width;
1533 for(y=0;y<height;y++) {
1534 w = width;
1535 while (w >= 8) {
1536 v = *p++ ^ xor_mask;
1537 q[0] = -(v >> 7);
1538 q[1] = -((v >> 6) & 1);
1539 q[2] = -((v >> 5) & 1);
1540 q[3] = -((v >> 4) & 1);
1541 q[4] = -((v >> 3) & 1);
1542 q[5] = -((v >> 2) & 1);
1543 q[6] = -((v >> 1) & 1);
1544 q[7] = -((v >> 0) & 1);
1545 w -= 8;
1546 q += 8;
1547 }
1548 if (w > 0) {
1549 v = *p++ ^ xor_mask;
1550 do {
1551 q[0] = -((v >> 7) & 1);
1552 q++;
1553 v <<= 1;
1554 } while (--w);
1555 }
1556 p += src_wrap;
1557 q += dst_wrap;
1558 }
1559 }
1560
1561 static void monowhite_to_gray(AVPicture *dst, const AVPicture *src,
1562 int width, int height)
1563 {
1564 mono_to_gray(dst, src, width, height, 0xff);
1565 }
1566
1567 static void monoblack_to_gray(AVPicture *dst, const AVPicture *src,
1568 int width, int height)
1569 {
1570 mono_to_gray(dst, src, width, height, 0x00);
1571 }
1572
1573 static void gray_to_mono(AVPicture *dst, const AVPicture *src,
1574 int width, int height, int xor_mask)
1575 {
1576 int n;
1577 const uint8_t *s;
1578 uint8_t *d;
1579 int j, b, v, n1, src_wrap, dst_wrap, y;
1580
1581 s = src->data[0];
1582 src_wrap = src->linesize[0] - width;
1583
1584 d = dst->data[0];
1585 dst_wrap = dst->linesize[0] - ((width + 7) >> 3);
1586
1587 for(y=0;y<height;y++) {
1588 n = width;
1589 while (n >= 8) {
1590 v = 0;
1591 for(j=0;j<8;j++) {
1592 b = s[0];
1593 s++;
1594 v = (v << 1) | (b >> 7);
1595 }
1596 d[0] = v ^ xor_mask;
1597 d++;
1598 n -= 8;
1599 }
1600 if (n > 0) {
1601 n1 = n;
1602 v = 0;
1603 while (n > 0) {
1604 b = s[0];
1605 s++;
1606 v = (v << 1) | (b >> 7);
1607 n--;
1608 }
1609 d[0] = (v << (8 - (n1 & 7))) ^ xor_mask;
1610 d++;
1611 }
1612 s += src_wrap;
1613 d += dst_wrap;
1614 }
1615 }
1616
1617 static void gray_to_monowhite(AVPicture *dst, const AVPicture *src,
1618 int width, int height)
1619 {
1620 gray_to_mono(dst, src, width, height, 0xff);
1621 }
1622
1623 static void gray_to_monoblack(AVPicture *dst, const AVPicture *src,
1624 int width, int height)
1625 {
1626 gray_to_mono(dst, src, width, height, 0x00);
1627 }
1628
1629 static void gray_to_gray16(AVPicture *dst, const AVPicture *src,
1630 int width, int height)
1631 {
1632 int x, y, src_wrap, dst_wrap;
1633 uint8_t *s, *d;
1634 s = src->data[0];
1635 src_wrap = src->linesize[0] - width;
1636 d = dst->data[0];
1637 dst_wrap = dst->linesize[0] - width * 2;
1638 for(y=0; y<height; y++){
1639 for(x=0; x<width; x++){
1640 *d++ = *s;
1641 *d++ = *s++;
1642 }
1643 s += src_wrap;
1644 d += dst_wrap;
1645 }
1646 }
1647
1648 static void gray16_to_gray(AVPicture *dst, const AVPicture *src,
1649 int width, int height)
1650 {
1651 int x, y, src_wrap, dst_wrap;
1652 uint8_t *s, *d;
1653 s = src->data[0];
1654 src_wrap = src->linesize[0] - width * 2;
1655 d = dst->data[0];
1656 dst_wrap = dst->linesize[0] - width;
1657 for(y=0; y<height; y++){
1658 for(x=0; x<width; x++){
1659 *d++ = *s;
1660 s += 2;
1661 }
1662 s += src_wrap;
1663 d += dst_wrap;
1664 }
1665 }
1666
1667 static void gray16be_to_gray(AVPicture *dst, const AVPicture *src,
1668 int width, int height)
1669 {
1670 gray16_to_gray(dst, src, width, height);
1671 }
1672
1673 static void gray16le_to_gray(AVPicture *dst, const AVPicture *src,
1674 int width, int height)
1675 {
1676 AVPicture tmpsrc = *src;
1677 tmpsrc.data[0]++;
1678 gray16_to_gray(dst, &tmpsrc, width, height);
1679 }
1680
1681 static void gray16_to_gray16(AVPicture *dst, const AVPicture *src,
1682 int width, int height)
1683 {
1684 int x, y, src_wrap, dst_wrap;
1685 uint16_t *s, *d;
1686 s = (uint16_t*)src->data[0];
1687 src_wrap = (src->linesize[0] - width * 2)/2;
1688 d = (uint16_t*)dst->data[0];
1689 dst_wrap = (dst->linesize[0] - width * 2)/2;
1690 for(y=0; y<height; y++){
1691 for(x=0; x<width; x++){
1692 *d++ = bswap_16(*s++);
1693 }
1694 s += src_wrap;
1695 d += dst_wrap;
1696 }
1697 }
1698
1699
1700 typedef struct ConvertEntry {
1701 void (*convert)(AVPicture *dst,
1702 const AVPicture *src, int width, int height);
1703 } ConvertEntry;
1704
1705 /* Add each new conversion function in this table. In order to be able
1706 to convert from any format to any format, the following constraints
1707 must be satisfied:
1708
1709 - all FF_COLOR_RGB formats must convert to and from PIX_FMT_RGB24
1710
1711 - all FF_COLOR_GRAY formats must convert to and from PIX_FMT_GRAY8
1712
1713 - all FF_COLOR_RGB formats with alpha must convert to and from PIX_FMT_RGB32
1714
1715 - PIX_FMT_YUV444P and PIX_FMT_YUVJ444P must convert to and from
1716 PIX_FMT_RGB24.
1717
1718 - PIX_FMT_422 must convert to and from PIX_FMT_422P.
1719
1720 The other conversion functions are just optimizations for common cases.
1721 */
1722 static const ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
1723 [PIX_FMT_YUV420P] = {
1724 [PIX_FMT_YUYV422] = {
1725 .convert = yuv420p_to_yuyv422,
1726 },
1727 [PIX_FMT_RGB555] = {
1728 .convert = yuv420p_to_rgb555
1729 },
1730 [PIX_FMT_RGB565] = {
1731 .convert = yuv420p_to_rgb565
1732 },
1733 [PIX_FMT_BGR24] = {
1734 .convert = yuv420p_to_bgr24
1735 },
1736 [PIX_FMT_RGB24] = {
1737 .convert = yuv420p_to_rgb24
1738 },
1739 [PIX_FMT_RGB32] = {
1740 .convert = yuv420p_to_rgb32
1741 },
1742 [PIX_FMT_UYVY422] = {
1743 .convert = yuv420p_to_uyvy422,
1744 },
1745 },
1746 [PIX_FMT_YUV422P] = {
1747 [PIX_FMT_YUYV422] = {
1748 .convert = yuv422p_to_yuyv422,
1749 },
1750 [PIX_FMT_UYVY422] = {
1751 .convert = yuv422p_to_uyvy422,
1752 },
1753 },
1754 [PIX_FMT_YUV444P] = {
1755 [PIX_FMT_RGB24] = {
1756 .convert = yuv444p_to_rgb24
1757 },
1758 },
1759 [PIX_FMT_YUVJ420P] = {
1760 [PIX_FMT_RGB555] = {
1761 .convert = yuvj420p_to_rgb555
1762 },
1763 [PIX_FMT_RGB565] = {
1764 .convert = yuvj420p_to_rgb565
1765 },
1766 [PIX_FMT_BGR24] = {
1767 .convert = yuvj420p_to_bgr24
1768 },
1769 [PIX_FMT_RGB24] = {
1770 .convert = yuvj420p_to_rgb24
1771 },
1772 [PIX_FMT_RGB32] = {
1773 .convert = yuvj420p_to_rgb32
1774 },
1775 },
1776 [PIX_FMT_YUVJ444P] = {
1777 [PIX_FMT_RGB24] = {
1778 .convert = yuvj444p_to_rgb24
1779 },
1780 },
1781 [PIX_FMT_YUYV422] = {
1782 [PIX_FMT_YUV420P] = {
1783 .convert = yuyv422_to_yuv420p,
1784 },
1785 [PIX_FMT_YUV422P] = {
1786 .convert = yuyv422_to_yuv422p,
1787 },
1788 },
1789 [PIX_FMT_UYVY422] = {
1790 [PIX_FMT_YUV420P] = {
1791 .convert = uyvy422_to_yuv420p,
1792 },
1793 [PIX_FMT_YUV422P] = {
1794 .convert = uyvy422_to_yuv422p,
1795 },
1796 },
1797 [PIX_FMT_RGB24] = {
1798 [PIX_FMT_YUV420P] = {
1799 .convert = rgb24_to_yuv420p
1800 },
1801 [PIX_FMT_RGB565] = {
1802 .convert = rgb24_to_rgb565
1803 },
1804 [PIX_FMT_RGB555] = {
1805 .convert = rgb24_to_rgb555
1806 },
1807 [PIX_FMT_RGB32] = {
1808 .convert = rgb24_to_rgb32
1809 },
1810 [PIX_FMT_BGR24] = {
1811 .convert = rgb24_to_bgr24
1812 },
1813 [PIX_FMT_GRAY8] = {
1814 .convert = rgb24_to_gray
1815 },
1816 [PIX_FMT_PAL8] = {
1817 .convert = rgb24_to_pal8
1818 },
1819 [PIX_FMT_YUV444P] = {
1820 .convert = rgb24_to_yuv444p
1821 },
1822 [PIX_FMT_YUVJ420P] = {
1823 .convert = rgb24_to_yuvj420p
1824 },
1825 [PIX_FMT_YUVJ444P] = {
1826 .convert = rgb24_to_yuvj444p
1827 },
1828 },
1829 [PIX_FMT_RGB32] = {
1830 [PIX_FMT_RGB24] = {
1831 .convert = rgb32_to_rgb24
1832 },
1833 [PIX_FMT_BGR24] = {
1834 .convert = rgb32_to_bgr24
1835 },
1836 [PIX_FMT_RGB565] = {
1837 .convert = rgb32_to_rgb565
1838 },
1839 [PIX_FMT_RGB555] = {
1840 .convert = rgb32_to_rgb555
1841 },
1842 [PIX_FMT_PAL8] = {
1843 .convert = rgb32_to_pal8
1844 },
1845 [PIX_FMT_YUV420P] = {
1846 .convert = rgb32_to_yuv420p
1847 },
1848 [PIX_FMT_GRAY8] = {
1849 .convert = rgb32_to_gray
1850 },
1851 },
1852 [PIX_FMT_BGR24] = {
1853 [PIX_FMT_RGB32] = {
1854 .convert = bgr24_to_rgb32
1855 },
1856 [PIX_FMT_RGB24] = {
1857 .convert = bgr24_to_rgb24
1858 },
1859 [PIX_FMT_YUV420P] = {
1860 .convert = bgr24_to_yuv420p
1861 },
1862 [PIX_FMT_GRAY8] = {
1863 .convert = bgr24_to_gray
1864 },
1865 },
1866 [PIX_FMT_RGB555] = {
1867 [PIX_FMT_RGB24] = {
1868 .convert = rgb555_to_rgb24
1869 },
1870 [PIX_FMT_RGB32] = {
1871 .convert = rgb555_to_rgb32
1872 },
1873 [PIX_FMT_YUV420P] = {
1874 .convert = rgb555_to_yuv420p
1875 },
1876 [PIX_FMT_GRAY8] = {
1877 .convert = rgb555_to_gray
1878 },
1879 },
1880 [PIX_FMT_RGB565] = {
1881 [PIX_FMT_RGB32] = {
1882 .convert = rgb565_to_rgb32
1883 },
1884 [PIX_FMT_RGB24] = {
1885 .convert = rgb565_to_rgb24
1886 },
1887 [PIX_FMT_YUV420P] = {
1888 .convert = rgb565_to_yuv420p
1889 },
1890 [PIX_FMT_GRAY8] = {
1891 .convert = rgb565_to_gray
1892 },
1893 },
1894 [PIX_FMT_GRAY16BE] = {
1895 [PIX_FMT_GRAY8] = {
1896 .convert = gray16be_to_gray
1897 },
1898 [PIX_FMT_GRAY16LE] = {
1899 .convert = gray16_to_gray16
1900 },
1901 },
1902 [PIX_FMT_GRAY16LE] = {
1903 [PIX_FMT_GRAY8] = {
1904 .convert = gray16le_to_gray
1905 },
1906 [PIX_FMT_GRAY16BE] = {
1907 .convert = gray16_to_gray16
1908 },
1909 },
1910 [PIX_FMT_GRAY8] = {
1911 [PIX_FMT_RGB555] = {
1912 .convert = gray_to_rgb555
1913 },
1914 [PIX_FMT_RGB565] = {
1915 .convert = gray_to_rgb565
1916 },
1917 [PIX_FMT_RGB24] = {
1918 .convert = gray_to_rgb24
1919 },
1920 [PIX_FMT_BGR24] = {
1921 .convert = gray_to_bgr24
1922 },
1923 [PIX_FMT_RGB32] = {
1924 .convert = gray_to_rgb32
1925 },
1926 [PIX_FMT_MONOWHITE] = {
1927 .convert = gray_to_monowhite
1928 },
1929 [PIX_FMT_MONOBLACK] = {
1930 .convert = gray_to_monoblack
1931 },
1932 [PIX_FMT_GRAY16LE] = {
1933 .convert = gray_to_gray16
1934 },
1935 [PIX_FMT_GRAY16BE] = {
1936 .convert = gray_to_gray16
1937 },
1938 },
1939 [PIX_FMT_MONOWHITE] = {
1940 [PIX_FMT_GRAY8] = {
1941 .convert = monowhite_to_gray
1942 },
1943 },
1944 [PIX_FMT_MONOBLACK] = {
1945 [PIX_FMT_GRAY8] = {
1946 .convert = monoblack_to_gray
1947 },
1948 },
1949 [PIX_FMT_PAL8] = {
1950 [PIX_FMT_RGB555] = {
1951 .convert = pal8_to_rgb555
1952 },
1953 [PIX_FMT_RGB565] = {
1954 .convert = pal8_to_rgb565
1955 },
1956 [PIX_FMT_BGR24] = {
1957 .convert = pal8_to_bgr24
1958 },
1959 [PIX_FMT_RGB24] = {
1960 .convert = pal8_to_rgb24
1961 },
1962 [PIX_FMT_RGB32] = {
1963 .convert = pal8_to_rgb32
1964 },
1965 },
1966 [PIX_FMT_UYYVYY411] = {
1967 [PIX_FMT_YUV411P] = {
1968 .convert = uyyvyy411_to_yuv411p,
1969 },
1970 },
1971
1972 };
1973
1974 int avpicture_alloc(AVPicture *picture,
1975 int pix_fmt, int width, int height)
1976 {
1977 int size;
1978 void *ptr;
1979
1980 size = avpicture_get_size(pix_fmt, width, height);
1981 if(size<0)
1982 goto fail;
1983 ptr = av_malloc(size);
1984 if (!ptr)
1985 goto fail;
1986 avpicture_fill(picture, ptr, pix_fmt, width, height);
1987 return 0;
1988 fail:
1989 memset(picture, 0, sizeof(AVPicture));
1990 return -1;
1991 }
1992
1993 void avpicture_free(AVPicture *picture)
1994 {
1995 av_free(picture->data[0]);
1996 }
1997
1998 /* return true if yuv planar */
1999 static inline int is_yuv_planar(const PixFmtInfo *ps)
2000 {
2001 return (ps->color_type == FF_COLOR_YUV ||
2002 ps->color_type == FF_COLOR_YUV_JPEG) &&
2003 ps->pixel_type == FF_PIXEL_PLANAR;
2004 }
2005
2006 int av_picture_crop(AVPicture *dst, const AVPicture *src,
2007 int pix_fmt, int top_band, int left_band)
2008 {
2009 int y_shift;
2010 int x_shift;
2011
2012 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
2013 return -1;
2014
2015 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
2016 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
2017
2018 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
2019 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
2020 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
2021
2022 dst->linesize[0] = src->linesize[0];
2023 dst->linesize[1] = src->linesize[1];
2024 dst->linesize[2] = src->linesize[2];
2025 return 0;
2026 }
2027
2028 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
2029 int pix_fmt, int padtop, int padbottom, int padleft, int padright,
2030 int *color)
2031 {
2032 uint8_t *optr;
2033 int y_shift;
2034 int x_shift;
2035 int yheight;
2036 int i, y;
2037
2038 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
2039 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
2040
2041 for (i = 0; i < 3; i++) {
2042 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
2043 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
2044
2045 if (padtop || padleft) {
2046 memset(dst->data[i], color[i],
2047 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
2048 }
2049
2050 if (padleft || padright) {
2051 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2052 (dst->linesize[i] - (padright >> x_shift));
2053 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
2054 for (y = 0; y < yheight; y++) {
2055 memset(optr, color[i], (padleft + padright) >> x_shift);
2056 optr += dst->linesize[i];
2057 }
2058 }
2059
2060 if (src) { /* first line */
2061 uint8_t *iptr = src->data[i];
2062 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2063 (padleft >> x_shift);
2064 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
2065 iptr += src->linesize[i];
2066 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2067 (dst->linesize[i] - (padright >> x_shift));
2068 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
2069 for (y = 0; y < yheight; y++) {
2070 memset(optr, color[i], (padleft + padright) >> x_shift);
2071 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
2072 (width - padleft - padright) >> x_shift);
2073 iptr += src->linesize[i];
2074 optr += dst->linesize[i];
2075 }
2076 }
2077
2078 if (padbottom || padright) {
2079 optr = dst->data[i] + dst->linesize[i] *
2080 ((height - padbottom) >> y_shift) - (padright >> x_shift);
2081 memset(optr, color[i],dst->linesize[i] *
2082 (padbottom >> y_shift) + (padright >> x_shift));
2083 }
2084 }
2085 return 0;
2086 }
2087
2088 #ifndef CONFIG_SWSCALE
2089 static uint8_t y_ccir_to_jpeg[256];
2090 static uint8_t y_jpeg_to_ccir[256];
2091 static uint8_t c_ccir_to_jpeg[256];
2092 static uint8_t c_jpeg_to_ccir[256];
2093
2094 /* init various conversion tables */
2095 static void img_convert_init(void)
2096 {
2097 int i;
2098 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2099
2100 for(i = 0;i < 256; i++) {
2101 y_ccir_to_jpeg[i] = Y_CCIR_TO_JPEG(i);
2102 y_jpeg_to_ccir[i] = Y_JPEG_TO_CCIR(i);
2103 c_ccir_to_jpeg[i] = C_CCIR_TO_JPEG(i);
2104 c_jpeg_to_ccir[i] = C_JPEG_TO_CCIR(i);
2105 }
2106 }
2107
2108 /* apply to each pixel the given table */
2109 static void img_apply_table(uint8_t *dst, int dst_wrap,
2110 const uint8_t *src, int src_wrap,
2111 int width, int height, const uint8_t *table1)
2112 {
2113 int n;
2114 const uint8_t *s;
2115 uint8_t *d;
2116 const uint8_t *table;
2117
2118 table = table1;
2119 for(;height > 0; height--) {
2120 s = src;
2121 d = dst;
2122 n = width;
2123 while (n >= 4) {
2124 d[0] = table[s[0]];
2125 d[1] = table[s[1]];
2126 d[2] = table[s[2]];
2127 d[3] = table[s[3]];
2128 d += 4;
2129 s += 4;
2130 n -= 4;
2131 }
2132 while (n > 0) {
2133 d[0] = table[s[0]];
2134 d++;
2135 s++;
2136 n--;
2137 }
2138 dst += dst_wrap;
2139 src += src_wrap;
2140 }
2141 }
2142
2143 /* XXX: use generic filter ? */
2144 /* XXX: in most cases, the sampling position is incorrect */
2145
2146 /* 4x1 -> 1x1 */
2147 static void shrink41(uint8_t *dst, int dst_wrap,
2148 const uint8_t *src, int src_wrap,
2149 int width, int height)
2150 {
2151 int w;
2152 const uint8_t *s;
2153 uint8_t *d;
2154
2155 for(;height > 0; height--) {
2156 s = src;
2157 d = dst;
2158 for(w = width;w > 0; w--) {
2159 d[0] = (s[0] + s[1] + s[2] + s[3] + 2) >> 2;
2160 s += 4;
2161 d++;
2162 }
2163 src += src_wrap;
2164 dst += dst_wrap;
2165 }
2166 }
2167
2168 /* 2x1 -> 1x1 */
2169 static void shrink21(uint8_t *dst, int dst_wrap,
2170 const uint8_t *src, int src_wrap,
2171 int width, int height)
2172 {
2173 int w;
2174 const uint8_t *s;
2175 uint8_t *d;
2176
2177 for(;height > 0; height--) {
2178 s = src;
2179 d = dst;
2180 for(w = width;w > 0; w--) {
2181 d[0] = (s[0] + s[1]) >> 1;
2182 s += 2;
2183 d++;
2184 }
2185 src += src_wrap;
2186 dst += dst_wrap;
2187 }
2188 }
2189
2190 /* 1x2 -> 1x1 */
2191 static void shrink12(uint8_t *dst, int dst_wrap,
2192 const uint8_t *src, int src_wrap,
2193 int width, int height)
2194 {
2195 int w;
2196 uint8_t *d;
2197 const uint8_t *s1, *s2;
2198
2199 for(;height > 0; height--) {
2200 s1 = src;
2201 s2 = s1 + src_wrap;
2202 d = dst;
2203 for(w = width;w >= 4; w-=4) {
2204 d[0] = (s1[0] + s2[0]) >> 1;
2205 d[1] = (s1[1] + s2[1]) >> 1;
2206 d[2] = (s1[2] + s2[2]) >> 1;
2207 d[3] = (s1[3] + s2[3]) >> 1;
2208 s1 += 4;
2209 s2 += 4;
2210 d += 4;
2211 }
2212 for(;w > 0; w--) {
2213 d[0] = (s1[0] + s2[0]) >> 1;
2214 s1++;
2215 s2++;
2216 d++;
2217 }
2218 src += 2 * src_wrap;
2219 dst += dst_wrap;
2220 }
2221 }
2222
2223 static void grow21_line(uint8_t *dst, const uint8_t *src,
2224 int width)
2225 {
2226 int w;
2227 const uint8_t *s1;
2228 uint8_t *d;
2229
2230 s1 = src;
2231 d = dst;
2232 for(w = width;w >= 4; w-=4) {
2233 d[1] = d[0] = s1[0];
2234 d[3] = d[2] = s1[1];
2235 s1 += 2;
2236 d += 4;
2237 }
2238 for(;w >= 2; w -= 2) {
2239 d[1] = d[0] = s1[0];
2240 s1 ++;
2241 d += 2;
2242 }
2243 /* only needed if width is not a multiple of two */
2244 /* XXX: veryfy that */
2245 if (w) {
2246 d[0] = s1[0];
2247 }
2248 }
2249
2250 static void grow41_line(uint8_t *dst, const uint8_t *src,
2251 int width)
2252 {
2253 int w, v;
2254 const uint8_t *s1;
2255 uint8_t *d;
2256
2257 s1 = src;
2258 d = dst;
2259 for(w = width;w >= 4; w-=4) {
2260 v = s1[0];
2261 d[0] = v;
2262 d[1] = v;
2263 d[2] = v;
2264 d[3] = v;
2265 s1 ++;
2266 d += 4;
2267 }
2268 }
2269
2270 /* 1x1 -> 2x1 */
2271 static void grow21(uint8_t *dst, int dst_wrap,
2272 const uint8_t *src, int src_wrap,
2273 int width, int height)
2274 {
2275 for(;height > 0; height--) {
2276 grow21_line(dst, src, width);
2277 src += src_wrap;
2278 dst += dst_wrap;
2279 }
2280 }
2281
2282 /* 1x1 -> 1x2 */
2283 static void grow12(uint8_t *dst, int dst_wrap,
2284 const uint8_t *src, int src_wrap,
2285 int width, int height)
2286 {
2287 for(;height > 0; height-=2) {
2288 memcpy(dst, src, width);
2289 dst += dst_wrap;
2290 memcpy(dst, src, width);
2291 dst += dst_wrap;
2292 src += src_wrap;
2293 }
2294 }
2295
2296 /* 1x1 -> 2x2 */
2297 static void grow22(uint8_t *dst, int dst_wrap,
2298 const uint8_t *src, int src_wrap,
2299 int width, int height)
2300 {
2301 for(;height > 0; height--) {
2302 grow21_line(dst, src, width);
2303 if (height%2)
2304 src += src_wrap;
2305 dst += dst_wrap;
2306 }
2307 }
2308
2309 /* 1x1 -> 4x1 */
2310 static void grow41(uint8_t *dst, int dst_wrap,
2311 const uint8_t *src, int src_wrap,
2312 int width, int height)
2313 {
2314 for(;height > 0; height--) {
2315 grow41_line(dst, src, width);
2316 src += src_wrap;
2317 dst += dst_wrap;
2318 }
2319 }
2320
2321 /* 1x1 -> 4x4 */
2322 static void grow44(uint8_t *dst, int dst_wrap,
2323 const uint8_t *src, int src_wrap,
2324 int width, int height)
2325 {
2326 for(;height > 0; height--) {
2327 grow41_line(dst, src, width);
2328 if ((height & 3) == 1)
2329 src += src_wrap;
2330 dst += dst_wrap;
2331 }
2332 }
2333
2334 /* 1x2 -> 2x1 */
2335 static void conv411(uint8_t *dst, int dst_wrap,
2336 const uint8_t *src, int src_wrap,
2337 int width, int height)
2338 {
2339 int w, c;
2340 const uint8_t *s1, *s2;
2341 uint8_t *d;
2342
2343 width>>=1;
2344
2345 for(;height > 0; height--) {
2346 s1 = src;
2347 s2 = src + src_wrap;
2348 d = dst;
2349 for(w = width;w > 0; w--) {
2350 c = (s1[0] + s2[0]) >> 1;
2351 d[0] = c;
2352 d[1] = c;
2353 s1++;
2354 s2++;
2355 d += 2;
2356 }
2357 src += src_wrap * 2;
2358 dst += dst_wrap;
2359 }
2360 }
2361
2362 /* XXX: always use linesize. Return -1 if not supported */
2363 int img_convert(AVPicture *dst, int dst_pix_fmt,
2364 const AVPicture *src, int src_pix_fmt,
2365 int src_width, int src_height)
2366 {
2367 static int initialized;
2368 int i, ret, dst_width, dst_height, int_pix_fmt;
2369 const PixFmtInfo *src_pix, *dst_pix;
2370 const ConvertEntry *ce;
2371 AVPicture tmp1, *tmp = &tmp1;
2372
2373 if (src_pix_fmt < 0 || src_pix_fmt >= PIX_FMT_NB ||
2374 dst_pix_fmt < 0 || dst_pix_fmt >= PIX_FMT_NB)
2375 return -1;
2376 if (src_width <= 0 || src_height <= 0)
2377 return 0;
2378
2379 if (!initialized) {
2380 initialized = 1;
2381 img_convert_init();
2382 }
2383
2384 dst_width = src_width;
2385 dst_height = src_height;
2386
2387 dst_pix = &pix_fmt_info[dst_pix_fmt];
2388 src_pix = &pix_fmt_info[src_pix_fmt];
2389 if (src_pix_fmt == dst_pix_fmt) {
2390 /* no conversion needed: just copy */
2391 av_picture_copy(dst, src, dst_pix_fmt, dst_width, dst_height);
2392 return 0;
2393 }
2394
2395 ce = &convert_table[src_pix_fmt][dst_pix_fmt];
2396 if (ce->convert) {
2397 /* specific conversion routine */
2398 ce->convert(dst, src, dst_width, dst_height);
2399 return 0;
2400 }
2401
2402 /* gray to YUV */
2403 if (is_yuv_planar(dst_pix) &&
2404 src_pix_fmt == PIX_FMT_GRAY8) {
2405 int w, h, y;
2406 uint8_t *d;
2407
2408 if (dst_pix->color_type == FF_COLOR_YUV_JPEG) {
2409 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2410 src->data[0], src->linesize[0],
2411 dst_width, dst_height);
2412 } else {
2413 img_apply_table(dst->data[0], dst->linesize[0],
2414 src->data[0], src->linesize[0],
2415 dst_width, dst_height,
2416 y_jpeg_to_ccir);
2417 }
2418 /* fill U and V with 128 */
2419 w = dst_width;
2420 h = dst_height;
2421 w >>= dst_pix->x_chroma_shift;
2422 h >>= dst_pix->y_chroma_shift;
2423 for(i = 1; i <= 2; i++) {
2424 d = dst->data[i];
2425 for(y = 0; y< h; y++) {
2426 memset(d, 128, w);
2427 d += dst->linesize[i];
2428 }
2429 }
2430 return 0;
2431 }
2432
2433 /* YUV to gray */
2434 if (is_yuv_planar(src_pix) &&
2435 dst_pix_fmt == PIX_FMT_GRAY8) {
2436 if (src_pix->color_type == FF_COLOR_YUV_JPEG) {
2437 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2438 src->data[0], src->linesize[0],
2439 dst_width, dst_height);
2440 } else {
2441 img_apply_table(dst->data[0], dst->linesize[0],
2442 src->data[0], src->linesize[0],
2443 dst_width, dst_height,
2444 y_ccir_to_jpeg);
2445 }
2446 return 0;
2447 }
2448
2449 /* YUV to YUV planar */
2450 if (is_yuv_planar(dst_pix) && is_yuv_planar(src_pix)) {
2451 int x_shift, y_shift, w, h, xy_shift;
2452 void (*resize_func)(uint8_t *dst, int dst_wrap,
2453 const uint8_t *src, int src_wrap,
2454 int width, int height);
2455
2456 /* compute chroma size of the smallest dimensions */
2457 w = dst_width;
2458 h = dst_height;
2459 if (dst_pix->x_chroma_shift >= src_pix->x_chroma_shift)
2460 w >>= dst_pix->x_chroma_shift;
2461 else
2462 w >>= src_pix->x_chroma_shift;
2463 if (dst_pix->y_chroma_shift >= src_pix->y_chroma_shift)
2464 h >>= dst_pix->y_chroma_shift;
2465 else
2466 h >>= src_pix->y_chroma_shift;
2467
2468 x_shift = (dst_pix->x_chroma_shift - src_pix->x_chroma_shift);
2469 y_shift = (dst_pix->y_chroma_shift - src_pix->y_chroma_shift);
2470 xy_shift = ((x_shift & 0xf) << 4) | (y_shift & 0xf);
2471 /* there must be filters for conversion at least from and to
2472 YUV444 format */
2473 switch(xy_shift) {
2474 case 0x00:
2475 resize_func = ff_img_copy_plane;
2476 break;
2477 case 0x10:
2478 resize_func = shrink21;
2479 break;
2480 case 0x20:
2481 resize_func = shrink41;
2482 break;
2483 case 0x01:
2484 resize_func = shrink12;
2485 break;
2486 case 0x11:
2487 resize_func = ff_shrink22;
2488 break;
2489 case 0x22:
2490 resize_func = ff_shrink44;
2491 break;
2492 case 0xf0:
2493 resize_func = grow21;
2494 break;
2495 case 0x0f:
2496 resize_func = grow12;
2497 break;
2498 case 0xe0:
2499 resize_func = grow41;
2500 break;
2501 case 0xff:
2502 resize_func = grow22;
2503 break;
2504 case 0xee:
2505 resize_func = grow44;
2506 break;
2507 case 0xf1:
2508 resize_func = conv411;
2509 break;
2510 default:
2511 /* currently not handled */
2512 goto no_chroma_filter;
2513 }
2514
2515 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2516 src->data[0], src->linesize[0],
2517 dst_width, dst_height);
2518
2519 for(i = 1;i <= 2; i++)
2520 resize_func(dst->data[i], dst->linesize[i],
2521 src->data[i], src->linesize[i],
2522 dst_width>>dst_pix->x_chroma_shift, dst_height>>dst_pix->y_chroma_shift);
2523 /* if yuv color space conversion is needed, we do it here on
2524 the destination image */
2525 if (dst_pix->color_type != src_pix->color_type) {
2526 const uint8_t *y_table, *c_table;
2527 if (dst_pix->color_type == FF_COLOR_YUV) {
2528 y_table = y_jpeg_to_ccir;
2529 c_table = c_jpeg_to_ccir;
2530 } else {
2531 y_table = y_ccir_to_jpeg;
2532 c_table = c_ccir_to_jpeg;
2533 }
2534 img_apply_table(dst->data[0], dst->linesize[0],
2535 dst->data[0], dst->linesize[0],
2536 dst_width, dst_height,
2537 y_table);
2538
2539 for(i = 1;i <= 2; i++)
2540 img_apply_table(dst->data[i], dst->linesize[i],
2541 dst->data[i], dst->linesize[i],
2542 dst_width>>dst_pix->x_chroma_shift,
2543 dst_height>>dst_pix->y_chroma_shift,
2544 c_table);
2545 }
2546 return 0;
2547 }
2548 no_chroma_filter:
2549
2550 /* try to use an intermediate format */
2551 if (src_pix_fmt == PIX_FMT_YUYV422 ||
2552 dst_pix_fmt == PIX_FMT_YUYV422) {
2553 /* specific case: convert to YUV422P first */
2554 int_pix_fmt = PIX_FMT_YUV422P;
2555 } else if (src_pix_fmt == PIX_FMT_UYVY422 ||
2556 dst_pix_fmt == PIX_FMT_UYVY422) {
2557 /* specific case: convert to YUV422P first */
2558 int_pix_fmt = PIX_FMT_YUV422P;
2559 } else if (src_pix_fmt == PIX_FMT_UYYVYY411 ||
2560 dst_pix_fmt == PIX_FMT_UYYVYY411) {
2561 /* specific case: convert to YUV411P first */
2562 int_pix_fmt = PIX_FMT_YUV411P;
2563 } else if ((src_pix->color_type == FF_COLOR_GRAY &&
2564 src_pix_fmt != PIX_FMT_GRAY8) ||
2565 (dst_pix->color_type == FF_COLOR_GRAY &&
2566 dst_pix_fmt != PIX_FMT_GRAY8)) {
2567 /* gray8 is the normalized format */
2568 int_pix_fmt = PIX_FMT_GRAY8;
2569 } else if ((is_yuv_planar(src_pix) &&
2570 src_pix_fmt != PIX_FMT_YUV444P &&
2571 src_pix_fmt != PIX_FMT_YUVJ444P)) {
2572 /* yuv444 is the normalized format */
2573 if (src_pix->color_type == FF_COLOR_YUV_JPEG)
2574 int_pix_fmt = PIX_FMT_YUVJ444P;
2575 else
2576 int_pix_fmt = PIX_FMT_YUV444P;
2577 } else if ((is_yuv_planar(dst_pix) &&
2578 dst_pix_fmt != PIX_FMT_YUV444P &&
2579 dst_pix_fmt != PIX_FMT_YUVJ444P)) {
2580 /* yuv444 is the normalized format */
2581 if (dst_pix->color_type == FF_COLOR_YUV_JPEG)
2582 int_pix_fmt = PIX_FMT_YUVJ444P;
2583 else
2584 int_pix_fmt = PIX_FMT_YUV444P;
2585 } else {
2586 /* the two formats are rgb or gray8 or yuv[j]444p */
2587 if (src_pix->is_alpha && dst_pix->is_alpha)
2588 int_pix_fmt = PIX_FMT_RGB32;
2589 else
2590 int_pix_fmt = PIX_FMT_RGB24;
2591 }
2592 if (src_pix_fmt == int_pix_fmt)
2593 return -1;
2594 if (avpicture_alloc(tmp, int_pix_fmt, dst_width, dst_height) < 0)
2595 return -1;
2596 ret = -1;
2597 if (img_convert(tmp, int_pix_fmt,
2598 src, src_pix_fmt, src_width, src_height) < 0)
2599 goto fail1;
2600 if (img_convert(dst, dst_pix_fmt,
2601 tmp, int_pix_fmt, dst_width, dst_height) < 0)
2602 goto fail1;
2603 ret = 0;
2604 fail1:
2605 avpicture_free(tmp);
2606 return ret;
2607 }
2608 #endif
2609
2610 /* NOTE: we scan all the pixels to have an exact information */
2611 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
2612 {
2613 const unsigned char *p;
2614 int src_wrap, ret, x, y;
2615 unsigned int a;
2616 uint32_t *palette = (uint32_t *)src->data[1];
2617
2618 p = src->data[0];
2619 src_wrap = src->linesize[0] - width;
2620 ret = 0;
2621 for(y=0;y<height;y++) {
2622 for(x=0;x<width;x++) {
2623 a = palette[p[0]] >> 24;
2624 if (a == 0x00) {
2625 ret |= FF_ALPHA_TRANSP;
2626 } else if (a != 0xff) {
2627 ret |= FF_ALPHA_SEMI_TRANSP;
2628 }
2629 p++;
2630 }
2631 p += src_wrap;
2632 }
2633 return ret;
2634 }
2635
2636 int img_get_alpha_info(const AVPicture *src,
2637 int pix_fmt, int width, int height)
2638 {
2639 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
2640 int ret;
2641
2642 pf = &pix_fmt_info[pix_fmt];
2643 /* no alpha can be represented in format */
2644 if (!pf->is_alpha)
2645 return 0;
2646 switch(pix_fmt) {
2647 case PIX_FMT_RGB32:
2648 ret = get_alpha_info_rgb32(src, width, height);
2649 break;
2650 case PIX_FMT_PAL8:
2651 ret = get_alpha_info_pal8(src, width, height);
2652 break;
2653 default:
2654 /* we do not know, so everything is indicated */
2655 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
2656 break;
2657 }
2658 return ret;
2659 }
2660
2661 #ifdef HAVE_MMX
2662 #define DEINT_INPLACE_LINE_LUM \
2663 movd_m2r(lum_m4[0],mm0);\
2664 movd_m2r(lum_m3[0],mm1);\
2665 movd_m2r(lum_m2[0],mm2);\
2666 movd_m2r(lum_m1[0],mm3);\
2667 movd_m2r(lum[0],mm4);\
2668 punpcklbw_r2r(mm7,mm0);\
2669 movd_r2m(mm2,lum_m4[0]);\
2670 punpcklbw_r2r(mm7,mm1);\
2671 punpcklbw_r2r(mm7,mm2);\
2672 punpcklbw_r2r(mm7,mm3);\
2673 punpcklbw_r2r(mm7,mm4);\
2674 paddw_r2r(mm3,mm1);\
2675 psllw_i2r(1,mm2);\
2676 paddw_r2r(mm4,mm0);\
2677 psllw_i2r(2,mm1);\
2678 paddw_r2r(mm6,mm2);\
2679 paddw_r2r(mm2,mm1);\
2680 psubusw_r2r(mm0,mm1);\
2681 psrlw_i2r(3,mm1);\
2682 packuswb_r2r(mm7,mm1);\
2683 movd_r2m(mm1,lum_m2[0]);
2684
2685 #define DEINT_LINE_LUM \
2686 movd_m2r(lum_m4[0],mm0);\
2687 movd_m2r(lum_m3[0],mm1);\
2688 movd_m2r(lum_m2[0],mm2);\
2689 movd_m2r(lum_m1[0],mm3);\
2690 movd_m2r(lum[0],mm4);\
2691 punpcklbw_r2r(mm7,mm0);\
2692 punpcklbw_r2r(mm7,mm1);\
2693 punpcklbw_r2r(mm7,mm2);\
2694 punpcklbw_r2r(mm7,mm3);\
2695 punpcklbw_r2r(mm7,mm4);\
2696 paddw_r2r(mm3,mm1);\
2697 psllw_i2r(1,mm2);\
2698 paddw_r2r(mm4,mm0);\
2699 psllw_i2r(2,mm1);\
2700 paddw_r2r(mm6,mm2);\
2701 paddw_r2r(mm2,mm1);\
2702 psubusw_r2r(mm0,mm1);\
2703 psrlw_i2r(3,mm1);\
2704 packuswb_r2r(mm7,mm1);\
2705 movd_r2m(mm1,dst[0]);
2706 #endif
2707
2708 /* filter parameters: [-1 4 2 4 -1] // 8 */
2709 static void deinterlace_line(uint8_t *dst,
2710 const uint8_t *lum_m4, const uint8_t *lum_m3,
2711 const uint8_t *lum_m2, const uint8_t *lum_m1,
2712 const uint8_t *lum,
2713 int size)
2714 {
2715 #ifndef HAVE_MMX
2716 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2717 int sum;
2718
2719 for(;size > 0;size--) {
2720 sum = -lum_m4[0];
2721 sum += lum_m3[0] << 2;
2722 sum += lum_m2[0] << 1;
2723 sum += lum_m1[0] << 2;
2724 sum += -lum[0];
2725 dst[0] = cm[(sum + 4) >> 3];
2726 lum_m4++;
2727 lum_m3++;
2728 lum_m2++;
2729 lum_m1++;
2730 lum++;
2731 dst++;
2732 }
2733 #else
2734
2735 {
2736 mmx_t rounder;
2737 rounder.uw[0]=4;
2738 rounder.uw[1]=4;
2739 rounder.uw[2]=4;
2740 rounder.uw[3]=4;
2741 pxor_r2r(mm7,mm7);
2742 movq_m2r(rounder,mm6);
2743 }
2744 for (;size > 3; size-=4) {
2745 DEINT_LINE_LUM
2746 lum_m4+=4;
2747 lum_m3+=4;
2748 lum_m2+=4;
2749 lum_m1+=4;
2750 lum+=4;
2751 dst+=4;
2752 }
2753 #endif
2754 }
2755 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
2756 int size)
2757 {
2758 #ifndef HAVE_MMX
2759 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2760 int sum;
2761
2762 for(;size > 0;size--) {
2763 sum = -lum_m4[0];
2764 sum += lum_m3[0] << 2;
2765 sum += lum_m2[0] << 1;
2766 lum_m4[0]=lum_m2[0];
2767 sum += lum_m1[0] << 2;
2768 sum += -lum[0];
2769 lum_m2[0] = cm[(sum + 4) >> 3];
2770 lum_m4++;
2771 lum_m3++;
2772 lum_m2++;
2773 lum_m1++;
2774 lum++;
2775 }
2776 #else
2777
2778 {
2779 mmx_t rounder;
2780 rounder.uw[0]=4;
2781 rounder.uw[1]=4;
2782 rounder.uw[2]=4;
2783 rounder.uw[3]=4;
2784 pxor_r2r(mm7,mm7);
2785 movq_m2r(rounder,mm6);
2786 }
2787 for (;size > 3; size-=4) {
2788 DEINT_INPLACE_LINE_LUM
2789 lum_m4+=4;
2790 lum_m3+=4;
2791 lum_m2+=4;
2792 lum_m1+=4;
2793 lum+=4;
2794 }
2795 #endif
2796 }
2797
2798 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
2799 top field is copied as is, but the bottom field is deinterlaced
2800 against the top field. */
2801 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
2802 const uint8_t *src1, int src_wrap,
2803 int width, int height)
2804 {
2805 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
2806 int y;
2807
2808 src_m2 = src1;
2809 src_m1 = src1;
2810 src_0=&src_m1[src_wrap];
2811 src_p1=&src_0[src_wrap];
2812 src_p2=&src_p1[src_wrap];
2813 for(y=0;y<(height-2);y+=2) {
2814 memcpy(dst,src_m1,width);
2815 dst += dst_wrap;
2816 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
2817 src_m2 = src_0;
2818 src_m1 = src_p1;
2819 src_0 = src_p2;
2820 src_p1 += 2*src_wrap;
2821 src_p2 += 2*src_wrap;
2822 dst += dst_wrap;
2823 }
2824 memcpy(dst,src_m1,width);
2825 dst += dst_wrap;
2826 /* do last line */
2827 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
2828 }
2829
2830 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
2831 int width, int height)
2832 {
2833 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
2834 int y;
2835 uint8_t *buf;
2836 buf = (uint8_t*)av_malloc(width);
2837
2838 src_m1 = src1;
2839 memcpy(buf,src_m1,width);
2840 src_0=&src_m1[src_wrap];
2841 src_p1=&src_0[src_wrap];
2842 src_p2=&src_p1[src_wrap];
2843 for(y=0;y<(height-2);y+=2) {
2844 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
2845 src_m1 = src_p1;
2846 src_0 = src_p2;
2847 src_p1 += 2*src_wrap;
2848 src_p2 += 2*src_wrap;
2849 }
2850 /* do last line */
2851 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
2852 av_free(buf);
2853 }
2854
2855 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2856 int pix_fmt, int width, int height)
2857 {
2858 int i;
2859
2860 if (pix_fmt != PIX_FMT_YUV420P &&
2861 pix_fmt != PIX_FMT_YUV422P &&
2862 pix_fmt != PIX_FMT_YUV444P &&
2863 pix_fmt != PIX_FMT_YUV411P &&
2864 pix_fmt != PIX_FMT_GRAY8)
2865 return -1;
2866 if ((width & 3) != 0 || (height & 3) != 0)
2867 return -1;
2868
2869 for(i=0;i<3;i++) {
2870 if (i == 1) {
2871 switch(pix_fmt) {
2872 case PIX_FMT_YUV420P:
2873 width >>= 1;
2874 height >>= 1;
2875 break;
2876 case PIX_FMT_YUV422P:
2877 width >>= 1;
2878 break;
2879 case PIX_FMT_YUV411P:
2880 width >>= 2;
2881 break;
2882 default:
2883 break;
2884 }
2885 if (pix_fmt == PIX_FMT_GRAY8) {
2886 break;
2887 }
2888 }
2889 if (src == dst) {
2890 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
2891 width, height);
2892 } else {
2893 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
2894 src->data[i], src->linesize[i],
2895 width, height);
2896 }
2897 }
2898 emms_c();
2899 return 0;
2900 }
2901
lucabe's unfinished and experimental patches for ffmpeg