Remove alpha channel from RGB555
[libav.git] / libavcodec / imgconvert.c
1 /*
2 * Misc image convertion 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 convertion 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
36 #ifdef USE_FASTMEMCPY
37 #include "libvo/fastmemcpy.h"
38 #endif
39
40 #ifdef HAVE_MMX
41 #include "i386/mmx.h"
42 #endif
43
44 #define xglue(x, y) x ## y
45 #define glue(x, y) xglue(x, y)
46
47 #define FF_COLOR_RGB 0 /* RGB color space */
48 #define FF_COLOR_GRAY 1 /* gray color space */
49 #define FF_COLOR_YUV 2 /* YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
50 #define FF_COLOR_YUV_JPEG 3 /* YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
51
52 #define FF_PIXEL_PLANAR 0 /* each channel has one component in AVPicture */
53 #define FF_PIXEL_PACKED 1 /* only one components containing all the channels */
54 #define FF_PIXEL_PALETTE 2 /* one components containing indexes for a palette */
55
56 typedef struct PixFmtInfo {
57 const char *name;
58 uint8_t nb_channels; /* number of channels (including alpha) */
59 uint8_t color_type; /* color type (see FF_COLOR_xxx constants) */
60 uint8_t pixel_type; /* pixel storage type (see FF_PIXEL_xxx constants) */
61 uint8_t is_alpha : 1; /* true if alpha can be specified */
62 uint8_t x_chroma_shift; /* X chroma subsampling factor is 2 ^ shift */
63 uint8_t y_chroma_shift; /* Y chroma subsampling factor is 2 ^ shift */
64 uint8_t depth; /* bit depth of the color components */
65 } PixFmtInfo;
66
67 /* this table gives more information about formats */
68 static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
69 /* YUV formats */
70 [PIX_FMT_YUV420P] = {
71 .name = "yuv420p",
72 .nb_channels = 3,
73 .color_type = FF_COLOR_YUV,
74 .pixel_type = FF_PIXEL_PLANAR,
75 .depth = 8,
76 .x_chroma_shift = 1, .y_chroma_shift = 1,
77 },
78 [PIX_FMT_YUV422P] = {
79 .name = "yuv422p",
80 .nb_channels = 3,
81 .color_type = FF_COLOR_YUV,
82 .pixel_type = FF_PIXEL_PLANAR,
83 .depth = 8,
84 .x_chroma_shift = 1, .y_chroma_shift = 0,
85 },
86 [PIX_FMT_YUV444P] = {
87 .name = "yuv444p",
88 .nb_channels = 3,
89 .color_type = FF_COLOR_YUV,
90 .pixel_type = FF_PIXEL_PLANAR,
91 .depth = 8,
92 .x_chroma_shift = 0, .y_chroma_shift = 0,
93 },
94 [PIX_FMT_YUV422] = {
95 .name = "yuv422",
96 .nb_channels = 1,
97 .color_type = FF_COLOR_YUV,
98 .pixel_type = FF_PIXEL_PACKED,
99 .depth = 8,
100 .x_chroma_shift = 1, .y_chroma_shift = 0,
101 },
102 [PIX_FMT_UYVY422] = {
103 .name = "uyvy422",
104 .nb_channels = 1,
105 .color_type = FF_COLOR_YUV,
106 .pixel_type = FF_PIXEL_PACKED,
107 .depth = 8,
108 .x_chroma_shift = 1, .y_chroma_shift = 0,
109 },
110 [PIX_FMT_YUV410P] = {
111 .name = "yuv410p",
112 .nb_channels = 3,
113 .color_type = FF_COLOR_YUV,
114 .pixel_type = FF_PIXEL_PLANAR,
115 .depth = 8,
116 .x_chroma_shift = 2, .y_chroma_shift = 2,
117 },
118 [PIX_FMT_YUV411P] = {
119 .name = "yuv411p",
120 .nb_channels = 3,
121 .color_type = FF_COLOR_YUV,
122 .pixel_type = FF_PIXEL_PLANAR,
123 .depth = 8,
124 .x_chroma_shift = 2, .y_chroma_shift = 0,
125 },
126
127 /* JPEG YUV */
128 [PIX_FMT_YUVJ420P] = {
129 .name = "yuvj420p",
130 .nb_channels = 3,
131 .color_type = FF_COLOR_YUV_JPEG,
132 .pixel_type = FF_PIXEL_PLANAR,
133 .depth = 8,
134 .x_chroma_shift = 1, .y_chroma_shift = 1,
135 },
136 [PIX_FMT_YUVJ422P] = {
137 .name = "yuvj422p",
138 .nb_channels = 3,
139 .color_type = FF_COLOR_YUV_JPEG,
140 .pixel_type = FF_PIXEL_PLANAR,
141 .depth = 8,
142 .x_chroma_shift = 1, .y_chroma_shift = 0,
143 },
144 [PIX_FMT_YUVJ444P] = {
145 .name = "yuvj444p",
146 .nb_channels = 3,
147 .color_type = FF_COLOR_YUV_JPEG,
148 .pixel_type = FF_PIXEL_PLANAR,
149 .depth = 8,
150 .x_chroma_shift = 0, .y_chroma_shift = 0,
151 },
152
153 /* RGB formats */
154 [PIX_FMT_RGB24] = {
155 .name = "rgb24",
156 .nb_channels = 3,
157 .color_type = FF_COLOR_RGB,
158 .pixel_type = FF_PIXEL_PACKED,
159 .depth = 8,
160 .x_chroma_shift = 0, .y_chroma_shift = 0,
161 },
162 [PIX_FMT_BGR24] = {
163 .name = "bgr24",
164 .nb_channels = 3,
165 .color_type = FF_COLOR_RGB,
166 .pixel_type = FF_PIXEL_PACKED,
167 .depth = 8,
168 .x_chroma_shift = 0, .y_chroma_shift = 0,
169 },
170 [PIX_FMT_RGBA32] = {
171 .name = "rgba32",
172 .nb_channels = 4, .is_alpha = 1,
173 .color_type = FF_COLOR_RGB,
174 .pixel_type = FF_PIXEL_PACKED,
175 .depth = 8,
176 .x_chroma_shift = 0, .y_chroma_shift = 0,
177 },
178 [PIX_FMT_RGB565] = {
179 .name = "rgb565",
180 .nb_channels = 3,
181 .color_type = FF_COLOR_RGB,
182 .pixel_type = FF_PIXEL_PACKED,
183 .depth = 5,
184 .x_chroma_shift = 0, .y_chroma_shift = 0,
185 },
186 [PIX_FMT_RGB555] = {
187 .name = "rgb555",
188 .nb_channels = 3,
189 .color_type = FF_COLOR_RGB,
190 .pixel_type = FF_PIXEL_PACKED,
191 .depth = 5,
192 .x_chroma_shift = 0, .y_chroma_shift = 0,
193 },
194
195 /* gray / mono formats */
196 [PIX_FMT_GRAY16BE] = {
197 .name = "gray16be",
198 .nb_channels = 1,
199 .color_type = FF_COLOR_GRAY,
200 .pixel_type = FF_PIXEL_PLANAR,
201 .depth = 16,
202 },
203 [PIX_FMT_GRAY16LE] = {
204 .name = "gray16le",
205 .nb_channels = 1,
206 .color_type = FF_COLOR_GRAY,
207 .pixel_type = FF_PIXEL_PLANAR,
208 .depth = 16,
209 },
210 [PIX_FMT_GRAY8] = {
211 .name = "gray",
212 .nb_channels = 1,
213 .color_type = FF_COLOR_GRAY,
214 .pixel_type = FF_PIXEL_PLANAR,
215 .depth = 8,
216 },
217 [PIX_FMT_MONOWHITE] = {
218 .name = "monow",
219 .nb_channels = 1,
220 .color_type = FF_COLOR_GRAY,
221 .pixel_type = FF_PIXEL_PLANAR,
222 .depth = 1,
223 },
224 [PIX_FMT_MONOBLACK] = {
225 .name = "monob",
226 .nb_channels = 1,
227 .color_type = FF_COLOR_GRAY,
228 .pixel_type = FF_PIXEL_PLANAR,
229 .depth = 1,
230 },
231
232 /* paletted formats */
233 [PIX_FMT_PAL8] = {
234 .name = "pal8",
235 .nb_channels = 4, .is_alpha = 1,
236 .color_type = FF_COLOR_RGB,
237 .pixel_type = FF_PIXEL_PALETTE,
238 .depth = 8,
239 },
240 [PIX_FMT_XVMC_MPEG2_MC] = {
241 .name = "xvmcmc",
242 },
243 [PIX_FMT_XVMC_MPEG2_IDCT] = {
244 .name = "xvmcidct",
245 },
246 [PIX_FMT_UYVY411] = {
247 .name = "uyvy411",
248 .nb_channels = 1,
249 .color_type = FF_COLOR_YUV,
250 .pixel_type = FF_PIXEL_PACKED,
251 .depth = 8,
252 .x_chroma_shift = 2, .y_chroma_shift = 0,
253 },
254 [PIX_FMT_BGR32] = {
255 .name = "bgr32",
256 .nb_channels = 4, .is_alpha = 1,
257 .color_type = FF_COLOR_RGB,
258 .pixel_type = FF_PIXEL_PACKED,
259 .depth = 8,
260 .x_chroma_shift = 0, .y_chroma_shift = 0,
261 },
262 [PIX_FMT_BGR565] = {
263 .name = "bgr565",
264 .nb_channels = 3,
265 .color_type = FF_COLOR_RGB,
266 .pixel_type = FF_PIXEL_PACKED,
267 .depth = 5,
268 .x_chroma_shift = 0, .y_chroma_shift = 0,
269 },
270 [PIX_FMT_BGR555] = {
271 .name = "bgr555",
272 .nb_channels = 3,
273 .color_type = FF_COLOR_RGB,
274 .pixel_type = FF_PIXEL_PACKED,
275 .depth = 5,
276 .x_chroma_shift = 0, .y_chroma_shift = 0,
277 },
278 [PIX_FMT_RGB8] = {
279 .name = "rgb8",
280 .nb_channels = 1,
281 .color_type = FF_COLOR_RGB,
282 .pixel_type = FF_PIXEL_PACKED,
283 .depth = 8,
284 .x_chroma_shift = 0, .y_chroma_shift = 0,
285 },
286 [PIX_FMT_RGB4] = {
287 .name = "rgb4",
288 .nb_channels = 1,
289 .color_type = FF_COLOR_RGB,
290 .pixel_type = FF_PIXEL_PACKED,
291 .depth = 4,
292 .x_chroma_shift = 0, .y_chroma_shift = 0,
293 },
294 [PIX_FMT_RGB4_BYTE] = {
295 .name = "rgb4_byte",
296 .nb_channels = 1,
297 .color_type = FF_COLOR_RGB,
298 .pixel_type = FF_PIXEL_PACKED,
299 .depth = 8,
300 .x_chroma_shift = 0, .y_chroma_shift = 0,
301 },
302 [PIX_FMT_BGR8] = {
303 .name = "bgr8",
304 .nb_channels = 1,
305 .color_type = FF_COLOR_RGB,
306 .pixel_type = FF_PIXEL_PACKED,
307 .depth = 8,
308 .x_chroma_shift = 0, .y_chroma_shift = 0,
309 },
310 [PIX_FMT_BGR4] = {
311 .name = "bgr4",
312 .nb_channels = 1,
313 .color_type = FF_COLOR_RGB,
314 .pixel_type = FF_PIXEL_PACKED,
315 .depth = 4,
316 .x_chroma_shift = 0, .y_chroma_shift = 0,
317 },
318 [PIX_FMT_BGR4_BYTE] = {
319 .name = "bgr4_byte",
320 .nb_channels = 1,
321 .color_type = FF_COLOR_RGB,
322 .pixel_type = FF_PIXEL_PACKED,
323 .depth = 8,
324 .x_chroma_shift = 0, .y_chroma_shift = 0,
325 },
326 [PIX_FMT_NV12] = {
327 .name = "nv12",
328 .nb_channels = 2,
329 .color_type = FF_COLOR_YUV,
330 .pixel_type = FF_PIXEL_PLANAR,
331 .depth = 8,
332 .x_chroma_shift = 1, .y_chroma_shift = 1,
333 },
334 [PIX_FMT_NV21] = {
335 .name = "nv12",
336 .nb_channels = 2,
337 .color_type = FF_COLOR_YUV,
338 .pixel_type = FF_PIXEL_PLANAR,
339 .depth = 8,
340 .x_chroma_shift = 1, .y_chroma_shift = 1,
341 },
342
343 [PIX_FMT_BGR32_1] = {
344 .name = "bgr32_1",
345 .nb_channels = 4, .is_alpha = 1,
346 .color_type = FF_COLOR_RGB,
347 .pixel_type = FF_PIXEL_PACKED,
348 .depth = 8,
349 .x_chroma_shift = 0, .y_chroma_shift = 0,
350 },
351 [PIX_FMT_RGB32_1] = {
352 .name = "rgb32_1",
353 .nb_channels = 4, .is_alpha = 1,
354 .color_type = FF_COLOR_RGB,
355 .pixel_type = FF_PIXEL_PACKED,
356 .depth = 8,
357 .x_chroma_shift = 0, .y_chroma_shift = 0,
358 },
359 };
360
361 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift)
362 {
363 *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
364 *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
365 }
366
367 const char *avcodec_get_pix_fmt_name(int pix_fmt)
368 {
369 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
370 return "???";
371 else
372 return pix_fmt_info[pix_fmt].name;
373 }
374
375 enum PixelFormat avcodec_get_pix_fmt(const char* name)
376 {
377 int i;
378
379 for (i=0; i < PIX_FMT_NB; i++)
380 if (!strcmp(pix_fmt_info[i].name, name))
381 break;
382 return i;
383 }
384
385 /* Picture field are filled with 'ptr' addresses. Also return size */
386 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
387 int pix_fmt, int width, int height)
388 {
389 int size, w2, h2, size2;
390 const PixFmtInfo *pinfo;
391
392 if(avcodec_check_dimensions(NULL, width, height))
393 goto fail;
394
395 pinfo = &pix_fmt_info[pix_fmt];
396 size = width * height;
397 switch(pix_fmt) {
398 case PIX_FMT_YUV420P:
399 case PIX_FMT_YUV422P:
400 case PIX_FMT_YUV444P:
401 case PIX_FMT_YUV410P:
402 case PIX_FMT_YUV411P:
403 case PIX_FMT_YUVJ420P:
404 case PIX_FMT_YUVJ422P:
405 case PIX_FMT_YUVJ444P:
406 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
407 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
408 size2 = w2 * h2;
409 picture->data[0] = ptr;
410 picture->data[1] = picture->data[0] + size;
411 picture->data[2] = picture->data[1] + size2;
412 picture->linesize[0] = width;
413 picture->linesize[1] = w2;
414 picture->linesize[2] = w2;
415 return size + 2 * size2;
416 case PIX_FMT_NV12:
417 case PIX_FMT_NV21:
418 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
419 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
420 size2 = w2 * h2 * 2;
421 picture->data[0] = ptr;
422 picture->data[1] = picture->data[0] + size;
423 picture->data[2] = NULL;
424 picture->linesize[0] = width;
425 picture->linesize[1] = w2;
426 picture->linesize[2] = 0;
427 return size + 2 * size2;
428 case PIX_FMT_RGB24:
429 case PIX_FMT_BGR24:
430 picture->data[0] = ptr;
431 picture->data[1] = NULL;
432 picture->data[2] = NULL;
433 picture->linesize[0] = width * 3;
434 return size * 3;
435 case PIX_FMT_RGBA32:
436 case PIX_FMT_BGR32:
437 case PIX_FMT_RGB32_1:
438 case PIX_FMT_BGR32_1:
439 picture->data[0] = ptr;
440 picture->data[1] = NULL;
441 picture->data[2] = NULL;
442 picture->linesize[0] = width * 4;
443 return size * 4;
444 case PIX_FMT_GRAY16BE:
445 case PIX_FMT_GRAY16LE:
446 case PIX_FMT_BGR555:
447 case PIX_FMT_BGR565:
448 case PIX_FMT_RGB555:
449 case PIX_FMT_RGB565:
450 case PIX_FMT_YUV422:
451 picture->data[0] = ptr;
452 picture->data[1] = NULL;
453 picture->data[2] = NULL;
454 picture->linesize[0] = width * 2;
455 return size * 2;
456 case PIX_FMT_UYVY422:
457 picture->data[0] = ptr;
458 picture->data[1] = NULL;
459 picture->data[2] = NULL;
460 picture->linesize[0] = width * 2;
461 return size * 2;
462 case PIX_FMT_UYVY411:
463 picture->data[0] = ptr;
464 picture->data[1] = NULL;
465 picture->data[2] = NULL;
466 picture->linesize[0] = width + width/2;
467 return size + size/2;
468 case PIX_FMT_RGB8:
469 case PIX_FMT_BGR8:
470 case PIX_FMT_RGB4_BYTE:
471 case PIX_FMT_BGR4_BYTE:
472 case PIX_FMT_GRAY8:
473 picture->data[0] = ptr;
474 picture->data[1] = NULL;
475 picture->data[2] = NULL;
476 picture->linesize[0] = width;
477 return size;
478 case PIX_FMT_RGB4:
479 case PIX_FMT_BGR4:
480 picture->data[0] = ptr;
481 picture->data[1] = NULL;
482 picture->data[2] = NULL;
483 picture->linesize[0] = width / 2;
484 return size / 2;
485 case PIX_FMT_MONOWHITE:
486 case PIX_FMT_MONOBLACK:
487 picture->data[0] = ptr;
488 picture->data[1] = NULL;
489 picture->data[2] = NULL;
490 picture->linesize[0] = (width + 7) >> 3;
491 return picture->linesize[0] * height;
492 case PIX_FMT_PAL8:
493 size2 = (size + 3) & ~3;
494 picture->data[0] = ptr;
495 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
496 picture->data[2] = NULL;
497 picture->linesize[0] = width;
498 picture->linesize[1] = 4;
499 return size2 + 256 * 4;
500 default:
501 fail:
502 picture->data[0] = NULL;
503 picture->data[1] = NULL;
504 picture->data[2] = NULL;
505 picture->data[3] = NULL;
506 return -1;
507 }
508 }
509
510 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
511 unsigned char *dest, int dest_size)
512 {
513 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
514 int i, j, w, h, data_planes;
515 const unsigned char* s;
516 int size = avpicture_get_size(pix_fmt, width, height);
517
518 if (size > dest_size || size < 0)
519 return -1;
520
521 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
522 if (pix_fmt == PIX_FMT_YUV422 ||
523 pix_fmt == PIX_FMT_UYVY422 ||
524 pix_fmt == PIX_FMT_BGR565 ||
525 pix_fmt == PIX_FMT_BGR555 ||
526 pix_fmt == PIX_FMT_RGB565 ||
527 pix_fmt == PIX_FMT_RGB555)
528 w = width * 2;
529 else if (pix_fmt == PIX_FMT_UYVY411)
530 w = width + width/2;
531 else if (pix_fmt == PIX_FMT_PAL8)
532 w = width;
533 else
534 w = width * (pf->depth * pf->nb_channels / 8);
535
536 data_planes = 1;
537 h = height;
538 } else {
539 data_planes = pf->nb_channels;
540 w = (width*pf->depth + 7)/8;
541 h = height;
542 }
543
544 for (i=0; i<data_planes; i++) {
545 if (i == 1) {
546 w = width >> pf->x_chroma_shift;
547 h = height >> pf->y_chroma_shift;
548 }
549 s = src->data[i];
550 for(j=0; j<h; j++) {
551 memcpy(dest, s, w);
552 dest += w;
553 s += src->linesize[i];
554 }
555 }
556
557 if (pf->pixel_type == FF_PIXEL_PALETTE)
558 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
559
560 return size;
561 }
562
563 int avpicture_get_size(int pix_fmt, int width, int height)
564 {
565 AVPicture dummy_pict;
566 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
567 }
568
569 /**
570 * compute the loss when converting from a pixel format to another
571 */
572 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
573 int has_alpha)
574 {
575 const PixFmtInfo *pf, *ps;
576 int loss;
577
578 ps = &pix_fmt_info[src_pix_fmt];
579 pf = &pix_fmt_info[dst_pix_fmt];
580
581 /* compute loss */
582 loss = 0;
583 pf = &pix_fmt_info[dst_pix_fmt];
584 if (pf->depth < ps->depth ||
585 (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
586 loss |= FF_LOSS_DEPTH;
587 if (pf->x_chroma_shift > ps->x_chroma_shift ||
588 pf->y_chroma_shift > ps->y_chroma_shift)
589 loss |= FF_LOSS_RESOLUTION;
590 switch(pf->color_type) {
591 case FF_COLOR_RGB:
592 if (ps->color_type != FF_COLOR_RGB &&
593 ps->color_type != FF_COLOR_GRAY)
594 loss |= FF_LOSS_COLORSPACE;
595 break;
596 case FF_COLOR_GRAY:
597 if (ps->color_type != FF_COLOR_GRAY)
598 loss |= FF_LOSS_COLORSPACE;
599 break;
600 case FF_COLOR_YUV:
601 if (ps->color_type != FF_COLOR_YUV)
602 loss |= FF_LOSS_COLORSPACE;
603 break;
604 case FF_COLOR_YUV_JPEG:
605 if (ps->color_type != FF_COLOR_YUV_JPEG &&
606 ps->color_type != FF_COLOR_YUV &&
607 ps->color_type != FF_COLOR_GRAY)
608 loss |= FF_LOSS_COLORSPACE;
609 break;
610 default:
611 /* fail safe test */
612 if (ps->color_type != pf->color_type)
613 loss |= FF_LOSS_COLORSPACE;
614 break;
615 }
616 if (pf->color_type == FF_COLOR_GRAY &&
617 ps->color_type != FF_COLOR_GRAY)
618 loss |= FF_LOSS_CHROMA;
619 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
620 loss |= FF_LOSS_ALPHA;
621 if (pf->pixel_type == FF_PIXEL_PALETTE &&
622 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
623 loss |= FF_LOSS_COLORQUANT;
624 return loss;
625 }
626
627 static int avg_bits_per_pixel(int pix_fmt)
628 {
629 int bits;
630 const PixFmtInfo *pf;
631
632 pf = &pix_fmt_info[pix_fmt];
633 switch(pf->pixel_type) {
634 case FF_PIXEL_PACKED:
635 switch(pix_fmt) {
636 case PIX_FMT_YUV422:
637 case PIX_FMT_UYVY422:
638 case PIX_FMT_RGB565:
639 case PIX_FMT_RGB555:
640 case PIX_FMT_BGR565:
641 case PIX_FMT_BGR555:
642 bits = 16;
643 break;
644 case PIX_FMT_UYVY411:
645 bits = 12;
646 break;
647 default:
648 bits = pf->depth * pf->nb_channels;
649 break;
650 }
651 break;
652 case FF_PIXEL_PLANAR:
653 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
654 bits = pf->depth * pf->nb_channels;
655 } else {
656 bits = pf->depth + ((2 * pf->depth) >>
657 (pf->x_chroma_shift + pf->y_chroma_shift));
658 }
659 break;
660 case FF_PIXEL_PALETTE:
661 bits = 8;
662 break;
663 default:
664 bits = -1;
665 break;
666 }
667 return bits;
668 }
669
670 static int avcodec_find_best_pix_fmt1(int pix_fmt_mask,
671 int src_pix_fmt,
672 int has_alpha,
673 int loss_mask)
674 {
675 int dist, i, loss, min_dist, dst_pix_fmt;
676
677 /* find exact color match with smallest size */
678 dst_pix_fmt = -1;
679 min_dist = 0x7fffffff;
680 for(i = 0;i < PIX_FMT_NB; i++) {
681 if (pix_fmt_mask & (1 << i)) {
682 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
683 if (loss == 0) {
684 dist = avg_bits_per_pixel(i);
685 if (dist < min_dist) {
686 min_dist = dist;
687 dst_pix_fmt = i;
688 }
689 }
690 }
691 }
692 return dst_pix_fmt;
693 }
694
695 /**
696 * find best pixel format to convert to. Return -1 if none found
697 */
698 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
699 int has_alpha, int *loss_ptr)
700 {
701 int dst_pix_fmt, loss_mask, i;
702 static const int loss_mask_order[] = {
703 ~0, /* no loss first */
704 ~FF_LOSS_ALPHA,
705 ~FF_LOSS_RESOLUTION,
706 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
707 ~FF_LOSS_COLORQUANT,
708 ~FF_LOSS_DEPTH,
709 0,
710 };
711
712 /* try with successive loss */
713 i = 0;
714 for(;;) {
715 loss_mask = loss_mask_order[i++];
716 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
717 has_alpha, loss_mask);
718 if (dst_pix_fmt >= 0)
719 goto found;
720 if (loss_mask == 0)
721 break;
722 }
723 return -1;
724 found:
725 if (loss_ptr)
726 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
727 return dst_pix_fmt;
728 }
729
730 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
731 const uint8_t *src, int src_wrap,
732 int width, int height)
733 {
734 if((!dst) || (!src))
735 return;
736 for(;height > 0; height--) {
737 memcpy(dst, src, width);
738 dst += dst_wrap;
739 src += src_wrap;
740 }
741 }
742
743 /**
744 * Copy image 'src' to 'dst'.
745 */
746 void img_copy(AVPicture *dst, const AVPicture *src,
747 int pix_fmt, int width, int height)
748 {
749 int bwidth, bits, i;
750 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
751
752 pf = &pix_fmt_info[pix_fmt];
753 switch(pf->pixel_type) {
754 case FF_PIXEL_PACKED:
755 switch(pix_fmt) {
756 case PIX_FMT_YUV422:
757 case PIX_FMT_UYVY422:
758 case PIX_FMT_RGB565:
759 case PIX_FMT_RGB555:
760 case PIX_FMT_BGR565:
761 case PIX_FMT_BGR555:
762 bits = 16;
763 break;
764 case PIX_FMT_UYVY411:
765 bits = 12;
766 break;
767 default:
768 bits = pf->depth * pf->nb_channels;
769 break;
770 }
771 bwidth = (width * bits + 7) >> 3;
772 ff_img_copy_plane(dst->data[0], dst->linesize[0],
773 src->data[0], src->linesize[0],
774 bwidth, height);
775 break;
776 case FF_PIXEL_PLANAR:
777 for(i = 0; i < pf->nb_channels; i++) {
778 int w, h;
779 w = width;
780 h = height;
781 if (i == 1 || i == 2) {
782 w >>= pf->x_chroma_shift;
783 h >>= pf->y_chroma_shift;
784 }
785 bwidth = (w * pf->depth + 7) >> 3;
786 ff_img_copy_plane(dst->data[i], dst->linesize[i],
787 src->data[i], src->linesize[i],
788 bwidth, h);
789 }
790 break;
791 case FF_PIXEL_PALETTE:
792 ff_img_copy_plane(dst->data[0], dst->linesize[0],
793 src->data[0], src->linesize[0],
794 width, height);
795 /* copy the palette */
796 ff_img_copy_plane(dst->data[1], dst->linesize[1],
797 src->data[1], src->linesize[1],
798 4, 256);
799 break;
800 }
801 }
802
803 /* XXX: totally non optimized */
804
805 static void yuv422_to_yuv420p(AVPicture *dst, const AVPicture *src,
806 int width, int height)
807 {
808 const uint8_t *p, *p1;
809 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
810 int w;
811
812 p1 = src->data[0];
813 lum1 = dst->data[0];
814 cb1 = dst->data[1];
815 cr1 = dst->data[2];
816
817 for(;height >= 1; height -= 2) {
818 p = p1;
819 lum = lum1;
820 cb = cb1;
821 cr = cr1;
822 for(w = width; w >= 2; w -= 2) {
823 lum[0] = p[0];
824 cb[0] = p[1];
825 lum[1] = p[2];
826 cr[0] = p[3];
827 p += 4;
828 lum += 2;
829 cb++;
830 cr++;
831 }
832 if (w) {
833 lum[0] = p[0];
834 cb[0] = p[1];
835 cr[0] = p[3];
836 cb++;
837 cr++;
838 }
839 p1 += src->linesize[0];
840 lum1 += dst->linesize[0];
841 if (height>1) {
842 p = p1;
843 lum = lum1;
844 for(w = width; w >= 2; w -= 2) {
845 lum[0] = p[0];
846 lum[1] = p[2];
847 p += 4;
848 lum += 2;
849 }
850 if (w) {
851 lum[0] = p[0];
852 }
853 p1 += src->linesize[0];
854 lum1 += dst->linesize[0];
855 }
856 cb1 += dst->linesize[1];
857 cr1 += dst->linesize[2];
858 }
859 }
860
861 static void uyvy422_to_yuv420p(AVPicture *dst, const AVPicture *src,
862 int width, int height)
863 {
864 const uint8_t *p, *p1;
865 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
866 int w;
867
868 p1 = src->data[0];
869
870 lum1 = dst->data[0];
871 cb1 = dst->data[1];
872 cr1 = dst->data[2];
873
874 for(;height >= 1; height -= 2) {
875 p = p1;
876 lum = lum1;
877 cb = cb1;
878 cr = cr1;
879 for(w = width; w >= 2; w -= 2) {
880 lum[0] = p[1];
881 cb[0] = p[0];
882 lum[1] = p[3];
883 cr[0] = p[2];
884 p += 4;
885 lum += 2;
886 cb++;
887 cr++;
888 }
889 if (w) {
890 lum[0] = p[1];
891 cb[0] = p[0];
892 cr[0] = p[2];
893 cb++;
894 cr++;
895 }
896 p1 += src->linesize[0];
897 lum1 += dst->linesize[0];
898 if (height>1) {
899 p = p1;
900 lum = lum1;
901 for(w = width; w >= 2; w -= 2) {
902 lum[0] = p[1];
903 lum[1] = p[3];
904 p += 4;
905 lum += 2;
906 }
907 if (w) {
908 lum[0] = p[1];
909 }
910 p1 += src->linesize[0];
911 lum1 += dst->linesize[0];
912 }
913 cb1 += dst->linesize[1];
914 cr1 += dst->linesize[2];
915 }
916 }
917
918
919 static void uyvy422_to_yuv422p(AVPicture *dst, const AVPicture *src,
920 int width, int height)
921 {
922 const uint8_t *p, *p1;
923 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
924 int w;
925
926 p1 = src->data[0];
927 lum1 = dst->data[0];
928 cb1 = dst->data[1];
929 cr1 = dst->data[2];
930 for(;height > 0; height--) {
931 p = p1;
932 lum = lum1;
933 cb = cb1;
934 cr = cr1;
935 for(w = width; w >= 2; w -= 2) {
936 lum[0] = p[1];
937 cb[0] = p[0];
938 lum[1] = p[3];
939 cr[0] = p[2];
940 p += 4;
941 lum += 2;
942 cb++;
943 cr++;
944 }
945 p1 += src->linesize[0];
946 lum1 += dst->linesize[0];
947 cb1 += dst->linesize[1];
948 cr1 += dst->linesize[2];
949 }
950 }
951
952
953 static void yuv422_to_yuv422p(AVPicture *dst, const AVPicture *src,
954 int width, int height)
955 {
956 const uint8_t *p, *p1;
957 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
958 int w;
959
960 p1 = src->data[0];
961 lum1 = dst->data[0];
962 cb1 = dst->data[1];
963 cr1 = dst->data[2];
964 for(;height > 0; height--) {
965 p = p1;
966 lum = lum1;
967 cb = cb1;
968 cr = cr1;
969 for(w = width; w >= 2; w -= 2) {
970 lum[0] = p[0];
971 cb[0] = p[1];
972 lum[1] = p[2];
973 cr[0] = p[3];
974 p += 4;
975 lum += 2;
976 cb++;
977 cr++;
978 }
979 p1 += src->linesize[0];
980 lum1 += dst->linesize[0];
981 cb1 += dst->linesize[1];
982 cr1 += dst->linesize[2];
983 }
984 }
985
986 static void yuv422p_to_yuv422(AVPicture *dst, const AVPicture *src,
987 int width, int height)
988 {
989 uint8_t *p, *p1;
990 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
991 int w;
992
993 p1 = dst->data[0];
994 lum1 = src->data[0];
995 cb1 = src->data[1];
996 cr1 = src->data[2];
997 for(;height > 0; height--) {
998 p = p1;
999 lum = lum1;
1000 cb = cb1;
1001 cr = cr1;
1002 for(w = width; w >= 2; w -= 2) {
1003 p[0] = lum[0];
1004 p[1] = cb[0];
1005 p[2] = lum[1];
1006 p[3] = cr[0];
1007 p += 4;
1008 lum += 2;
1009 cb++;
1010 cr++;
1011 }
1012 p1 += dst->linesize[0];
1013 lum1 += src->linesize[0];
1014 cb1 += src->linesize[1];
1015 cr1 += src->linesize[2];
1016 }
1017 }
1018
1019 static void yuv422p_to_uyvy422(AVPicture *dst, const AVPicture *src,
1020 int width, int height)
1021 {
1022 uint8_t *p, *p1;
1023 const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1024 int w;
1025
1026 p1 = dst->data[0];
1027 lum1 = src->data[0];
1028 cb1 = src->data[1];
1029 cr1 = src->data[2];
1030 for(;height > 0; height--) {
1031 p = p1;
1032 lum = lum1;
1033 cb = cb1;
1034 cr = cr1;
1035 for(w = width; w >= 2; w -= 2) {
1036 p[1] = lum[0];
1037 p[0] = cb[0];
1038 p[3] = lum[1];
1039 p[2] = cr[0];
1040 p += 4;
1041 lum += 2;
1042 cb++;
1043 cr++;
1044 }
1045 p1 += dst->linesize[0];
1046 lum1 += src->linesize[0];
1047 cb1 += src->linesize[1];
1048 cr1 += src->linesize[2];
1049 }
1050 }
1051
1052 static void uyvy411_to_yuv411p(AVPicture *dst, const AVPicture *src,
1053 int width, int height)
1054 {
1055 const uint8_t *p, *p1;
1056 uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1057 int w;
1058
1059 p1 = src->data[0];
1060 lum1 = dst->data[0];
1061 cb1 = dst->data[1];
1062 cr1 = dst->data[2];
1063 for(;height > 0; height--) {
1064 p = p1;
1065 lum = lum1;
1066 cb = cb1;
1067 cr = cr1;
1068 for(w = width; w >= 4; w -= 4) {
1069 cb[0] = p[0];
1070 lum[0] = p[1];
1071 lum[1] = p[2];
1072 cr[0] = p[3];
1073 lum[2] = p[4];
1074 lum[3] = p[5];
1075 p += 6;
1076 lum += 4;
1077 cb++;
1078 cr++;
1079 }
1080 p1 += src->linesize[0];
1081 lum1 += dst->linesize[0];
1082 cb1 += dst->linesize[1];
1083 cr1 += dst->linesize[2];
1084 }
1085 }
1086
1087
1088 static void yuv420p_to_yuv422(AVPicture *dst, const AVPicture *src,
1089 int width, int height)
1090 {
1091 int w, h;
1092 uint8_t *line1, *line2, *linesrc = dst->data[0];
1093 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
1094 uint8_t *cb1, *cb2 = src->data[1];
1095 uint8_t *cr1, *cr2 = src->data[2];
1096
1097 for(h = height / 2; h--;) {
1098 line1 = linesrc;
1099 line2 = linesrc + dst->linesize[0];
1100
1101 lum1 = lumsrc;
1102 lum2 = lumsrc + src->linesize[0];
1103
1104 cb1 = cb2;
1105 cr1 = cr2;
1106
1107 for(w = width / 2; w--;) {
1108 *line1++ = *lum1++; *line2++ = *lum2++;
1109 *line1++ = *line2++ = *cb1++;
1110 *line1++ = *lum1++; *line2++ = *lum2++;
1111 *line1++ = *line2++ = *cr1++;
1112 }
1113
1114 linesrc += dst->linesize[0] * 2;
1115 lumsrc += src->linesize[0] * 2;
1116 cb2 += src->linesize[1];
1117 cr2 += src->linesize[2];
1118 }
1119 }
1120
1121 static void yuv420p_to_uyvy422(AVPicture *dst, const AVPicture *src,
1122 int width, int height)
1123 {
1124 int w, h;
1125 uint8_t *line1, *line2, *linesrc = dst->data[0];
1126 uint8_t *lum1, *lum2, *lumsrc = src->data[0];
1127 uint8_t *cb1, *cb2 = src->data[1];
1128 uint8_t *cr1, *cr2 = src->data[2];
1129
1130 for(h = height / 2; h--;) {
1131 line1 = linesrc;
1132 line2 = linesrc + dst->linesize[0];
1133
1134 lum1 = lumsrc;
1135 lum2 = lumsrc + src->linesize[0];
1136
1137 cb1 = cb2;
1138 cr1 = cr2;
1139
1140 for(w = width / 2; w--;) {
1141 *line1++ = *line2++ = *cb1++;
1142 *line1++ = *lum1++; *line2++ = *lum2++;
1143 *line1++ = *line2++ = *cr1++;
1144 *line1++ = *lum1++; *line2++ = *lum2++;
1145 }
1146
1147 linesrc += dst->linesize[0] * 2;
1148 lumsrc += src->linesize[0] * 2;
1149 cb2 += src->linesize[1];
1150 cr2 += src->linesize[2];
1151 }
1152 }
1153
1154 #define SCALEBITS 10
1155 #define ONE_HALF (1 << (SCALEBITS - 1))
1156 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
1157
1158 #define YUV_TO_RGB1_CCIR(cb1, cr1)\
1159 {\
1160 cb = (cb1) - 128;\
1161 cr = (cr1) - 128;\
1162 r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;\
1163 g_add = - FIX(0.34414*255.0/224.0) * cb - FIX(0.71414*255.0/224.0) * cr + \
1164 ONE_HALF;\
1165 b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;\
1166 }
1167
1168 #define YUV_TO_RGB2_CCIR(r, g, b, y1)\
1169 {\
1170 y = ((y1) - 16) * FIX(255.0/219.0);\
1171 r = cm[(y + r_add) >> SCALEBITS];\
1172 g = cm[(y + g_add) >> SCALEBITS];\
1173 b = cm[(y + b_add) >> SCALEBITS];\
1174 }
1175
1176 #define YUV_TO_RGB1(cb1, cr1)\
1177 {\
1178 cb = (cb1) - 128;\
1179 cr = (cr1) - 128;\
1180 r_add = FIX(1.40200) * cr + ONE_HALF;\
1181 g_add = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF;\
1182 b_add = FIX(1.77200) * cb + ONE_HALF;\
1183 }
1184
1185 #define YUV_TO_RGB2(r, g, b, y1)\
1186 {\
1187 y = (y1) << SCALEBITS;\
1188 r = cm[(y + r_add) >> SCALEBITS];\
1189 g = cm[(y + g_add) >> SCALEBITS];\
1190 b = cm[(y + b_add) >> SCALEBITS];\
1191 }
1192
1193 #define Y_CCIR_TO_JPEG(y)\
1194 cm[((y) * FIX(255.0/219.0) + (ONE_HALF - 16 * FIX(255.0/219.0))) >> SCALEBITS]
1195
1196 #define Y_JPEG_TO_CCIR(y)\
1197 (((y) * FIX(219.0/255.0) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
1198
1199 #define C_CCIR_TO_JPEG(y)\
1200 cm[(((y) - 128) * FIX(127.0/112.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS]
1201
1202 /* NOTE: the clamp is really necessary! */
1203 static inline int C_JPEG_TO_CCIR(int y) {
1204 y = (((y - 128) * FIX(112.0/127.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS);
1205 if (y < 16)
1206 y = 16;
1207 return y;
1208 }
1209
1210
1211 #define RGB_TO_Y(r, g, b) \
1212 ((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
1213 FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)
1214
1215 #define RGB_TO_U(r1, g1, b1, shift)\
1216 (((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
1217 FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1218
1219 #define RGB_TO_V(r1, g1, b1, shift)\
1220 (((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
1221 FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1222
1223 #define RGB_TO_Y_CCIR(r, g, b) \
1224 ((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
1225 FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
1226
1227 #define RGB_TO_U_CCIR(r1, g1, b1, shift)\
1228 (((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
1229 FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1230
1231 #define RGB_TO_V_CCIR(r1, g1, b1, shift)\
1232 (((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
1233 FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1234
1235 static uint8_t y_ccir_to_jpeg[256];
1236 static uint8_t y_jpeg_to_ccir[256];
1237 static uint8_t c_ccir_to_jpeg[256];
1238 static uint8_t c_jpeg_to_ccir[256];
1239
1240 /* init various conversion tables */
1241 static void img_convert_init(void)
1242 {
1243 int i;
1244 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1245
1246 for(i = 0;i < 256; i++) {
1247 y_ccir_to_jpeg[i] = Y_CCIR_TO_JPEG(i);
1248 y_jpeg_to_ccir[i] = Y_JPEG_TO_CCIR(i);
1249 c_ccir_to_jpeg[i] = C_CCIR_TO_JPEG(i);
1250 c_jpeg_to_ccir[i] = C_JPEG_TO_CCIR(i);
1251 }
1252 }
1253
1254 /* apply to each pixel the given table */
1255 static void img_apply_table(uint8_t *dst, int dst_wrap,
1256 const uint8_t *src, int src_wrap,
1257 int width, int height, const uint8_t *table1)
1258 {
1259 int n;
1260 const uint8_t *s;
1261 uint8_t *d;
1262 const uint8_t *table;
1263
1264 table = table1;
1265 for(;height > 0; height--) {
1266 s = src;
1267 d = dst;
1268 n = width;
1269 while (n >= 4) {
1270 d[0] = table[s[0]];
1271 d[1] = table[s[1]];
1272 d[2] = table[s[2]];
1273 d[3] = table[s[3]];
1274 d += 4;
1275 s += 4;
1276 n -= 4;
1277 }
1278 while (n > 0) {
1279 d[0] = table[s[0]];
1280 d++;
1281 s++;
1282 n--;
1283 }
1284 dst += dst_wrap;
1285 src += src_wrap;
1286 }
1287 }
1288
1289 /* XXX: use generic filter ? */
1290 /* XXX: in most cases, the sampling position is incorrect */
1291
1292 /* 4x1 -> 1x1 */
1293 static void shrink41(uint8_t *dst, int dst_wrap,
1294 const uint8_t *src, int src_wrap,
1295 int width, int height)
1296 {
1297 int w;
1298 const uint8_t *s;
1299 uint8_t *d;
1300
1301 for(;height > 0; height--) {
1302 s = src;
1303 d = dst;
1304 for(w = width;w > 0; w--) {
1305 d[0] = (s[0] + s[1] + s[2] + s[3] + 2) >> 2;
1306 s += 4;
1307 d++;
1308 }
1309 src += src_wrap;
1310 dst += dst_wrap;
1311 }
1312 }
1313
1314 /* 2x1 -> 1x1 */
1315 static void shrink21(uint8_t *dst, int dst_wrap,
1316 const uint8_t *src, int src_wrap,
1317 int width, int height)
1318 {
1319 int w;
1320 const uint8_t *s;
1321 uint8_t *d;
1322
1323 for(;height > 0; height--) {
1324 s = src;
1325 d = dst;
1326 for(w = width;w > 0; w--) {
1327 d[0] = (s[0] + s[1]) >> 1;
1328 s += 2;
1329 d++;
1330 }
1331 src += src_wrap;
1332 dst += dst_wrap;
1333 }
1334 }
1335
1336 /* 1x2 -> 1x1 */
1337 static void shrink12(uint8_t *dst, int dst_wrap,
1338 const uint8_t *src, int src_wrap,
1339 int width, int height)
1340 {
1341 int w;
1342 uint8_t *d;
1343 const uint8_t *s1, *s2;
1344
1345 for(;height > 0; height--) {
1346 s1 = src;
1347 s2 = s1 + src_wrap;
1348 d = dst;
1349 for(w = width;w >= 4; w-=4) {
1350 d[0] = (s1[0] + s2[0]) >> 1;
1351 d[1] = (s1[1] + s2[1]) >> 1;
1352 d[2] = (s1[2] + s2[2]) >> 1;
1353 d[3] = (s1[3] + s2[3]) >> 1;
1354 s1 += 4;
1355 s2 += 4;
1356 d += 4;
1357 }
1358 for(;w > 0; w--) {
1359 d[0] = (s1[0] + s2[0]) >> 1;
1360 s1++;
1361 s2++;
1362 d++;
1363 }
1364 src += 2 * src_wrap;
1365 dst += dst_wrap;
1366 }
1367 }
1368
1369 /* 2x2 -> 1x1 */
1370 void ff_shrink22(uint8_t *dst, int dst_wrap,
1371 const uint8_t *src, int src_wrap,
1372 int width, int height)
1373 {
1374 int w;
1375 const uint8_t *s1, *s2;
1376 uint8_t *d;
1377
1378 for(;height > 0; height--) {
1379 s1 = src;
1380 s2 = s1 + src_wrap;
1381 d = dst;
1382 for(w = width;w >= 4; w-=4) {
1383 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1384 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1385 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1386 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1387 s1 += 8;
1388 s2 += 8;
1389 d += 4;
1390 }
1391 for(;w > 0; w--) {
1392 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1393 s1 += 2;
1394 s2 += 2;
1395 d++;
1396 }
1397 src += 2 * src_wrap;
1398 dst += dst_wrap;
1399 }
1400 }
1401
1402 /* 4x4 -> 1x1 */
1403 void ff_shrink44(uint8_t *dst, int dst_wrap,
1404 const uint8_t *src, int src_wrap,
1405 int width, int height)
1406 {
1407 int w;
1408 const uint8_t *s1, *s2, *s3, *s4;
1409 uint8_t *d;
1410
1411 for(;height > 0; height--) {
1412 s1 = src;
1413 s2 = s1 + src_wrap;
1414 s3 = s2 + src_wrap;
1415 s4 = s3 + src_wrap;
1416 d = dst;
1417 for(w = width;w > 0; w--) {
1418 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1419 s2[0] + s2[1] + s2[2] + s2[3] +
1420 s3[0] + s3[1] + s3[2] + s3[3] +
1421 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1422 s1 += 4;
1423 s2 += 4;
1424 s3 += 4;
1425 s4 += 4;
1426 d++;
1427 }
1428 src += 4 * src_wrap;
1429 dst += dst_wrap;
1430 }
1431 }
1432
1433 /* 8x8 -> 1x1 */
1434 void ff_shrink88(uint8_t *dst, int dst_wrap,
1435 const uint8_t *src, int src_wrap,
1436 int width, int height)
1437 {
1438 int w, i;
1439
1440 for(;height > 0; height--) {
1441 for(w = width;w > 0; w--) {
1442 int tmp=0;
1443 for(i=0; i<8; i++){
1444 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1445 src += src_wrap;
1446 }
1447 *(dst++) = (tmp + 32)>>6;
1448 src += 8 - 8*src_wrap;
1449 }
1450 src += 8*src_wrap - 8*width;
1451 dst += dst_wrap - width;
1452 }
1453 }
1454
1455 static void grow21_line(uint8_t *dst, const uint8_t *src,
1456 int width)
1457 {
1458 int w;
1459 const uint8_t *s1;
1460 uint8_t *d;
1461
1462 s1 = src;
1463 d = dst;
1464 for(w = width;w >= 4; w-=4) {
1465 d[1] = d[0] = s1[0];
1466 d[3] = d[2] = s1[1];
1467 s1 += 2;
1468 d += 4;
1469 }
1470 for(;w >= 2; w -= 2) {
1471 d[1] = d[0] = s1[0];
1472 s1 ++;
1473 d += 2;
1474 }
1475 /* only needed if width is not a multiple of two */
1476 /* XXX: veryfy that */
1477 if (w) {
1478 d[0] = s1[0];
1479 }
1480 }
1481
1482 static void grow41_line(uint8_t *dst, const uint8_t *src,
1483 int width)
1484 {
1485 int w, v;
1486 const uint8_t *s1;
1487 uint8_t *d;
1488
1489 s1 = src;
1490 d = dst;
1491 for(w = width;w >= 4; w-=4) {
1492 v = s1[0];
1493 d[0] = v;
1494 d[1] = v;
1495 d[2] = v;
1496 d[3] = v;
1497 s1 ++;
1498 d += 4;
1499 }
1500 }
1501
1502 /* 1x1 -> 2x1 */
1503 static void grow21(uint8_t *dst, int dst_wrap,
1504 const uint8_t *src, int src_wrap,
1505 int width, int height)
1506 {
1507 for(;height > 0; height--) {
1508 grow21_line(dst, src, width);
1509 src += src_wrap;
1510 dst += dst_wrap;
1511 }
1512 }
1513
1514 /* 1x1 -> 2x2 */
1515 static void grow22(uint8_t *dst, int dst_wrap,
1516 const uint8_t *src, int src_wrap,
1517 int width, int height)
1518 {
1519 for(;height > 0; height--) {
1520 grow21_line(dst, src, width);
1521 if (height%2)
1522 src += src_wrap;
1523 dst += dst_wrap;
1524 }
1525 }
1526
1527 /* 1x1 -> 4x1 */
1528 static void grow41(uint8_t *dst, int dst_wrap,
1529 const uint8_t *src, int src_wrap,
1530 int width, int height)
1531 {
1532 for(;height > 0; height--) {
1533 grow41_line(dst, src, width);
1534 src += src_wrap;
1535 dst += dst_wrap;
1536 }
1537 }
1538
1539 /* 1x1 -> 4x4 */
1540 static void grow44(uint8_t *dst, int dst_wrap,
1541 const uint8_t *src, int src_wrap,
1542 int width, int height)
1543 {
1544 for(;height > 0; height--) {
1545 grow41_line(dst, src, width);
1546 if ((height & 3) == 1)
1547 src += src_wrap;
1548 dst += dst_wrap;
1549 }
1550 }
1551
1552 /* 1x2 -> 2x1 */
1553 static void conv411(uint8_t *dst, int dst_wrap,
1554 const uint8_t *src, int src_wrap,
1555 int width, int height)
1556 {
1557 int w, c;
1558 const uint8_t *s1, *s2;
1559 uint8_t *d;
1560
1561 width>>=1;
1562
1563 for(;height > 0; height--) {
1564 s1 = src;
1565 s2 = src + src_wrap;
1566 d = dst;
1567 for(w = width;w > 0; w--) {
1568 c = (s1[0] + s2[0]) >> 1;
1569 d[0] = c;
1570 d[1] = c;
1571 s1++;
1572 s2++;
1573 d += 2;
1574 }
1575 src += src_wrap * 2;
1576 dst += dst_wrap;
1577 }
1578 }
1579
1580 /* XXX: add jpeg quantize code */
1581
1582 #define TRANSP_INDEX (6*6*6)
1583
1584 /* this is maybe slow, but allows for extensions */
1585 static inline unsigned char gif_clut_index(uint8_t r, uint8_t g, uint8_t b)
1586 {
1587 return ((((r)/47)%6)*6*6+(((g)/47)%6)*6+(((b)/47)%6));
1588 }
1589
1590 static void build_rgb_palette(uint8_t *palette, int has_alpha)
1591 {
1592 uint32_t *pal;
1593 static const uint8_t pal_value[6] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
1594 int i, r, g, b;
1595
1596 pal = (uint32_t *)palette;
1597 i = 0;
1598 for(r = 0; r < 6; r++) {
1599 for(g = 0; g < 6; g++) {
1600 for(b = 0; b < 6; b++) {
1601 pal[i++] = (0xff << 24) | (pal_value[r] << 16) |
1602 (pal_value[g] << 8) | pal_value[b];
1603 }
1604 }
1605 }
1606 if (has_alpha)
1607 pal[i++] = 0;
1608 while (i < 256)
1609 pal[i++] = 0xff000000;
1610 }
1611
1612 /* copy bit n to bits 0 ... n - 1 */
1613 static inline unsigned int bitcopy_n(unsigned int a, int n)
1614 {
1615 int mask;
1616 mask = (1 << n) - 1;
1617 return (a & (0xff & ~mask)) | ((-((a >> n) & 1)) & mask);
1618 }
1619
1620 /* rgb555 handling */
1621
1622 #define RGB_NAME rgb555
1623
1624 #define RGB_IN(r, g, b, s)\
1625 {\
1626 unsigned int v = ((const uint16_t *)(s))[0];\
1627 r = bitcopy_n(v >> (10 - 3), 3);\
1628 g = bitcopy_n(v >> (5 - 3), 3);\
1629 b = bitcopy_n(v << 3, 3);\
1630 }
1631
1632
1633 #define RGB_OUT(d, r, g, b)\
1634 {\
1635 ((uint16_t *)(d))[0] = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);\
1636 }
1637
1638 #define BPP 2
1639
1640 #include "imgconvert_template.h"
1641
1642 /* rgb565 handling */
1643
1644 #define RGB_NAME rgb565
1645
1646 #define RGB_IN(r, g, b, s)\
1647 {\
1648 unsigned int v = ((const uint16_t *)(s))[0];\
1649 r = bitcopy_n(v >> (11 - 3), 3);\
1650 g = bitcopy_n(v >> (5 - 2), 2);\
1651 b = bitcopy_n(v << 3, 3);\
1652 }
1653
1654 #define RGB_OUT(d, r, g, b)\
1655 {\
1656 ((uint16_t *)(d))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);\
1657 }
1658
1659 #define BPP 2
1660
1661 #include "imgconvert_template.h"
1662
1663 /* bgr24 handling */
1664
1665 #define RGB_NAME bgr24
1666
1667 #define RGB_IN(r, g, b, s)\
1668 {\
1669 b = (s)[0];\
1670 g = (s)[1];\
1671 r = (s)[2];\
1672 }
1673
1674 #define RGB_OUT(d, r, g, b)\
1675 {\
1676 (d)[0] = b;\
1677 (d)[1] = g;\
1678 (d)[2] = r;\
1679 }
1680
1681 #define BPP 3
1682
1683 #include "imgconvert_template.h"
1684
1685 #undef RGB_IN
1686 #undef RGB_OUT
1687 #undef BPP
1688
1689 /* rgb24 handling */
1690
1691 #define RGB_NAME rgb24
1692 #define FMT_RGB24
1693
1694 #define RGB_IN(r, g, b, s)\
1695 {\
1696 r = (s)[0];\
1697 g = (s)[1];\
1698 b = (s)[2];\
1699 }
1700
1701 #define RGB_OUT(d, r, g, b)\
1702 {\
1703 (d)[0] = r;\
1704 (d)[1] = g;\
1705 (d)[2] = b;\
1706 }
1707
1708 #define BPP 3
1709
1710 #include "imgconvert_template.h"
1711
1712 /* rgba32 handling */
1713
1714 #define RGB_NAME rgba32
1715 #define FMT_RGBA32
1716
1717 #define RGB_IN(r, g, b, s)\
1718 {\
1719 unsigned int v = ((const uint32_t *)(s))[0];\
1720 r = (v >> 16) & 0xff;\
1721 g = (v >> 8) & 0xff;\
1722 b = v & 0xff;\
1723 }
1724
1725 #define RGBA_IN(r, g, b, a, s)\
1726 {\
1727 unsigned int v = ((const uint32_t *)(s))[0];\
1728 a = (v >> 24) & 0xff;\
1729 r = (v >> 16) & 0xff;\
1730 g = (v >> 8) & 0xff;\
1731 b = v & 0xff;\
1732 }
1733
1734 #define RGBA_OUT(d, r, g, b, a)\
1735 {\
1736 ((uint32_t *)(d))[0] = (a << 24) | (r << 16) | (g << 8) | b;\
1737 }
1738
1739 #define BPP 4
1740
1741 #include "imgconvert_template.h"
1742
1743 static void mono_to_gray(AVPicture *dst, const AVPicture *src,
1744 int width, int height, int xor_mask)
1745 {
1746 const unsigned char *p;
1747 unsigned char *q;
1748 int v, dst_wrap, src_wrap;
1749 int y, w;
1750
1751 p = src->data[0];
1752 src_wrap = src->linesize[0] - ((width + 7) >> 3);
1753
1754 q = dst->data[0];
1755 dst_wrap = dst->linesize[0] - width;
1756 for(y=0;y<height;y++) {
1757 w = width;
1758 while (w >= 8) {
1759 v = *p++ ^ xor_mask;
1760 q[0] = -(v >> 7);
1761 q[1] = -((v >> 6) & 1);
1762 q[2] = -((v >> 5) & 1);
1763 q[3] = -((v >> 4) & 1);
1764 q[4] = -((v >> 3) & 1);
1765 q[5] = -((v >> 2) & 1);
1766 q[6] = -((v >> 1) & 1);
1767 q[7] = -((v >> 0) & 1);
1768 w -= 8;
1769 q += 8;
1770 }
1771 if (w > 0) {
1772 v = *p++ ^ xor_mask;
1773 do {
1774 q[0] = -((v >> 7) & 1);
1775 q++;
1776 v <<= 1;
1777 } while (--w);
1778 }
1779 p += src_wrap;
1780 q += dst_wrap;
1781 }
1782 }
1783
1784 static void monowhite_to_gray(AVPicture *dst, const AVPicture *src,
1785 int width, int height)
1786 {
1787 mono_to_gray(dst, src, width, height, 0xff);
1788 }
1789
1790 static void monoblack_to_gray(AVPicture *dst, const AVPicture *src,
1791 int width, int height)
1792 {
1793 mono_to_gray(dst, src, width, height, 0x00);
1794 }
1795
1796 static void gray_to_mono(AVPicture *dst, const AVPicture *src,
1797 int width, int height, int xor_mask)
1798 {
1799 int n;
1800 const uint8_t *s;
1801 uint8_t *d;
1802 int j, b, v, n1, src_wrap, dst_wrap, y;
1803
1804 s = src->data[0];
1805 src_wrap = src->linesize[0] - width;
1806
1807 d = dst->data[0];
1808 dst_wrap = dst->linesize[0] - ((width + 7) >> 3);
1809
1810 for(y=0;y<height;y++) {
1811 n = width;
1812 while (n >= 8) {
1813 v = 0;
1814 for(j=0;j<8;j++) {
1815 b = s[0];
1816 s++;
1817 v = (v << 1) | (b >> 7);
1818 }
1819 d[0] = v ^ xor_mask;
1820 d++;
1821 n -= 8;
1822 }
1823 if (n > 0) {
1824 n1 = n;
1825 v = 0;
1826 while (n > 0) {
1827 b = s[0];
1828 s++;
1829 v = (v << 1) | (b >> 7);
1830 n--;
1831 }
1832 d[0] = (v << (8 - (n1 & 7))) ^ xor_mask;
1833 d++;
1834 }
1835 s += src_wrap;
1836 d += dst_wrap;
1837 }
1838 }
1839
1840 static void gray_to_monowhite(AVPicture *dst, const AVPicture *src,
1841 int width, int height)
1842 {
1843 gray_to_mono(dst, src, width, height, 0xff);
1844 }
1845
1846 static void gray_to_monoblack(AVPicture *dst, const AVPicture *src,
1847 int width, int height)
1848 {
1849 gray_to_mono(dst, src, width, height, 0x00);
1850 }
1851
1852 static void gray_to_gray16(AVPicture *dst, const AVPicture *src,
1853 int width, int height)
1854 {
1855 int x, y, src_wrap, dst_wrap;
1856 uint8_t *s, *d;
1857 s = src->data[0];
1858 src_wrap = src->linesize[0] - width;
1859 d = dst->data[0];
1860 dst_wrap = dst->linesize[0] - width * 2;
1861 for(y=0; y<height; y++){
1862 for(x=0; x<width; x++){
1863 *d++ = *s;
1864 *d++ = *s++;
1865 }
1866 s += src_wrap;
1867 d += dst_wrap;
1868 }
1869 }
1870
1871 static void gray16_to_gray(AVPicture *dst, const AVPicture *src,
1872 int width, int height)
1873 {
1874 int x, y, src_wrap, dst_wrap;
1875 uint8_t *s, *d;
1876 s = src->data[0];
1877 src_wrap = src->linesize[0] - width * 2;
1878 d = dst->data[0];
1879 dst_wrap = dst->linesize[0] - width;
1880 for(y=0; y<height; y++){
1881 for(x=0; x<width; x++){
1882 *d++ = *s;
1883 s += 2;
1884 }
1885 s += src_wrap;
1886 d += dst_wrap;
1887 }
1888 }
1889
1890 static void gray16be_to_gray(AVPicture *dst, const AVPicture *src,
1891 int width, int height)
1892 {
1893 gray16_to_gray(dst, src, width, height);
1894 }
1895
1896 static void gray16le_to_gray(AVPicture *dst, const AVPicture *src,
1897 int width, int height)
1898 {
1899 gray16_to_gray(dst, src + 1, width, height);
1900 }
1901
1902 static void gray16_to_gray16(AVPicture *dst, const AVPicture *src,
1903 int width, int height)
1904 {
1905 int x, y, src_wrap, dst_wrap;
1906 uint16_t *s, *d;
1907 s = src->data[0];
1908 src_wrap = (src->linesize[0] - width * 2)/2;
1909 d = dst->data[0];
1910 dst_wrap = (dst->linesize[0] - width * 2)/2;
1911 for(y=0; y<height; y++){
1912 for(x=0; x<width; x++){
1913 *d++ = bswap_16(*s++);
1914 }
1915 s += src_wrap;
1916 d += dst_wrap;
1917 }
1918 }
1919
1920
1921 typedef struct ConvertEntry {
1922 void (*convert)(AVPicture *dst,
1923 const AVPicture *src, int width, int height);
1924 } ConvertEntry;
1925
1926 /* Add each new convertion function in this table. In order to be able
1927 to convert from any format to any format, the following constraints
1928 must be satisfied:
1929
1930 - all FF_COLOR_RGB formats must convert to and from PIX_FMT_RGB24
1931
1932 - all FF_COLOR_GRAY formats must convert to and from PIX_FMT_GRAY8
1933
1934 - all FF_COLOR_RGB formats with alpha must convert to and from PIX_FMT_RGBA32
1935
1936 - PIX_FMT_YUV444P and PIX_FMT_YUVJ444P must convert to and from
1937 PIX_FMT_RGB24.
1938
1939 - PIX_FMT_422 must convert to and from PIX_FMT_422P.
1940
1941 The other conversion functions are just optimisations for common cases.
1942 */
1943 static const ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
1944 [PIX_FMT_YUV420P] = {
1945 [PIX_FMT_YUV422] = {
1946 .convert = yuv420p_to_yuv422,
1947 },
1948 [PIX_FMT_RGB555] = {
1949 .convert = yuv420p_to_rgb555
1950 },
1951 [PIX_FMT_RGB565] = {
1952 .convert = yuv420p_to_rgb565
1953 },
1954 [PIX_FMT_BGR24] = {
1955 .convert = yuv420p_to_bgr24
1956 },
1957 [PIX_FMT_RGB24] = {
1958 .convert = yuv420p_to_rgb24
1959 },
1960 [PIX_FMT_RGBA32] = {
1961 .convert = yuv420p_to_rgba32
1962 },
1963 [PIX_FMT_UYVY422] = {
1964 .convert = yuv420p_to_uyvy422,
1965 },
1966 },
1967 [PIX_FMT_YUV422P] = {
1968 [PIX_FMT_YUV422] = {
1969 .convert = yuv422p_to_yuv422,
1970 },
1971 [PIX_FMT_UYVY422] = {
1972 .convert = yuv422p_to_uyvy422,
1973 },
1974 },
1975 [PIX_FMT_YUV444P] = {
1976 [PIX_FMT_RGB24] = {
1977 .convert = yuv444p_to_rgb24
1978 },
1979 },
1980 [PIX_FMT_YUVJ420P] = {
1981 [PIX_FMT_RGB555] = {
1982 .convert = yuvj420p_to_rgb555
1983 },
1984 [PIX_FMT_RGB565] = {
1985 .convert = yuvj420p_to_rgb565
1986 },
1987 [PIX_FMT_BGR24] = {
1988 .convert = yuvj420p_to_bgr24
1989 },
1990 [PIX_FMT_RGB24] = {
1991 .convert = yuvj420p_to_rgb24
1992 },
1993 [PIX_FMT_RGBA32] = {
1994 .convert = yuvj420p_to_rgba32
1995 },
1996 },
1997 [PIX_FMT_YUVJ444P] = {
1998 [PIX_FMT_RGB24] = {
1999 .convert = yuvj444p_to_rgb24
2000 },
2001 },
2002 [PIX_FMT_YUV422] = {
2003 [PIX_FMT_YUV420P] = {
2004 .convert = yuv422_to_yuv420p,
2005 },
2006 [PIX_FMT_YUV422P] = {
2007 .convert = yuv422_to_yuv422p,
2008 },
2009 },
2010 [PIX_FMT_UYVY422] = {
2011 [PIX_FMT_YUV420P] = {
2012 .convert = uyvy422_to_yuv420p,
2013 },
2014 [PIX_FMT_YUV422P] = {
2015 .convert = uyvy422_to_yuv422p,
2016 },
2017 },
2018 [PIX_FMT_RGB24] = {
2019 [PIX_FMT_YUV420P] = {
2020 .convert = rgb24_to_yuv420p
2021 },
2022 [PIX_FMT_RGB565] = {
2023 .convert = rgb24_to_rgb565
2024 },
2025 [PIX_FMT_RGB555] = {
2026 .convert = rgb24_to_rgb555
2027 },
2028 [PIX_FMT_RGBA32] = {
2029 .convert = rgb24_to_rgba32
2030 },
2031 [PIX_FMT_BGR24] = {
2032 .convert = rgb24_to_bgr24
2033 },
2034 [PIX_FMT_GRAY8] = {
2035 .convert = rgb24_to_gray
2036 },
2037 [PIX_FMT_PAL8] = {
2038 .convert = rgb24_to_pal8
2039 },
2040 [PIX_FMT_YUV444P] = {
2041 .convert = rgb24_to_yuv444p
2042 },
2043 [PIX_FMT_YUVJ420P] = {
2044 .convert = rgb24_to_yuvj420p
2045 },
2046 [PIX_FMT_YUVJ444P] = {
2047 .convert = rgb24_to_yuvj444p
2048 },
2049 },
2050 [PIX_FMT_RGBA32] = {
2051 [PIX_FMT_RGB24] = {
2052 .convert = rgba32_to_rgb24
2053 },
2054 [PIX_FMT_BGR24] = {
2055 .convert = rgba32_to_bgr24
2056 },
2057 [PIX_FMT_RGB565] = {
2058 .convert = rgba32_to_rgb565
2059 },
2060 [PIX_FMT_RGB555] = {
2061 .convert = rgba32_to_rgb555
2062 },
2063 [PIX_FMT_PAL8] = {
2064 .convert = rgba32_to_pal8
2065 },
2066 [PIX_FMT_YUV420P] = {
2067 .convert = rgba32_to_yuv420p
2068 },
2069 [PIX_FMT_GRAY8] = {
2070 .convert = rgba32_to_gray
2071 },
2072 },
2073 [PIX_FMT_BGR24] = {
2074 [PIX_FMT_RGBA32] = {
2075 .convert = bgr24_to_rgba32
2076 },
2077 [PIX_FMT_RGB24] = {
2078 .convert = bgr24_to_rgb24
2079 },
2080 [PIX_FMT_YUV420P] = {
2081 .convert = bgr24_to_yuv420p
2082 },
2083 [PIX_FMT_GRAY8] = {
2084 .convert = bgr24_to_gray
2085 },
2086 },
2087 [PIX_FMT_RGB555] = {
2088 [PIX_FMT_RGB24] = {
2089 .convert = rgb555_to_rgb24
2090 },
2091 [PIX_FMT_RGBA32] = {
2092 .convert = rgb555_to_rgba32
2093 },
2094 [PIX_FMT_YUV420P] = {
2095 .convert = rgb555_to_yuv420p
2096 },
2097 [PIX_FMT_GRAY8] = {
2098 .convert = rgb555_to_gray
2099 },
2100 },
2101 [PIX_FMT_RGB565] = {
2102 [PIX_FMT_RGBA32] = {
2103 .convert = rgb565_to_rgba32
2104 },
2105 [PIX_FMT_RGB24] = {
2106 .convert = rgb565_to_rgb24
2107 },
2108 [PIX_FMT_YUV420P] = {
2109 .convert = rgb565_to_yuv420p
2110 },
2111 [PIX_FMT_GRAY8] = {
2112 .convert = rgb565_to_gray
2113 },
2114 },
2115 [PIX_FMT_GRAY16BE] = {
2116 [PIX_FMT_GRAY8] = {
2117 .convert = gray16be_to_gray
2118 },
2119 [PIX_FMT_GRAY16LE] = {
2120 .convert = gray16_to_gray16
2121 },
2122 },
2123 [PIX_FMT_GRAY16LE] = {
2124 [PIX_FMT_GRAY8] = {
2125 .convert = gray16le_to_gray
2126 },
2127 [PIX_FMT_GRAY16BE] = {
2128 .convert = gray16_to_gray16
2129 },
2130 },
2131 [PIX_FMT_GRAY8] = {
2132 [PIX_FMT_RGB555] = {
2133 .convert = gray_to_rgb555
2134 },
2135 [PIX_FMT_RGB565] = {
2136 .convert = gray_to_rgb565
2137 },
2138 [PIX_FMT_RGB24] = {
2139 .convert = gray_to_rgb24
2140 },
2141 [PIX_FMT_BGR24] = {
2142 .convert = gray_to_bgr24
2143 },
2144 [PIX_FMT_RGBA32] = {
2145 .convert = gray_to_rgba32
2146 },
2147 [PIX_FMT_MONOWHITE] = {
2148 .convert = gray_to_monowhite
2149 },
2150 [PIX_FMT_MONOBLACK] = {
2151 .convert = gray_to_monoblack
2152 },
2153 [PIX_FMT_GRAY16LE] = {
2154 .convert = gray_to_gray16
2155 },
2156 [PIX_FMT_GRAY16BE] = {
2157 .convert = gray_to_gray16
2158 },
2159 },
2160 [PIX_FMT_MONOWHITE] = {
2161 [PIX_FMT_GRAY8] = {
2162 .convert = monowhite_to_gray
2163 },
2164 },
2165 [PIX_FMT_MONOBLACK] = {
2166 [PIX_FMT_GRAY8] = {
2167 .convert = monoblack_to_gray
2168 },
2169 },
2170 [PIX_FMT_PAL8] = {
2171 [PIX_FMT_RGB555] = {
2172 .convert = pal8_to_rgb555
2173 },
2174 [PIX_FMT_RGB565] = {
2175 .convert = pal8_to_rgb565
2176 },
2177 [PIX_FMT_BGR24] = {
2178 .convert = pal8_to_bgr24
2179 },
2180 [PIX_FMT_RGB24] = {
2181 .convert = pal8_to_rgb24
2182 },
2183 [PIX_FMT_RGBA32] = {
2184 .convert = pal8_to_rgba32
2185 },
2186 },
2187 [PIX_FMT_UYVY411] = {
2188 [PIX_FMT_YUV411P] = {
2189 .convert = uyvy411_to_yuv411p,
2190 },
2191 },
2192
2193 };
2194
2195 int avpicture_alloc(AVPicture *picture,
2196 int pix_fmt, int width, int height)
2197 {
2198 int size;
2199 void *ptr;
2200
2201 size = avpicture_get_size(pix_fmt, width, height);
2202 if(size<0)
2203 goto fail;
2204 ptr = av_malloc(size);
2205 if (!ptr)
2206 goto fail;
2207 avpicture_fill(picture, ptr, pix_fmt, width, height);
2208 return 0;
2209 fail:
2210 memset(picture, 0, sizeof(AVPicture));
2211 return -1;
2212 }
2213
2214 void avpicture_free(AVPicture *picture)
2215 {
2216 av_free(picture->data[0]);
2217 }
2218
2219 /* return true if yuv planar */
2220 static inline int is_yuv_planar(const PixFmtInfo *ps)
2221 {
2222 return (ps->color_type == FF_COLOR_YUV ||
2223 ps->color_type == FF_COLOR_YUV_JPEG) &&
2224 ps->pixel_type == FF_PIXEL_PLANAR;
2225 }
2226
2227 /**
2228 * Crop image top and left side
2229 */
2230 int img_crop(AVPicture *dst, const AVPicture *src,
2231 int pix_fmt, int top_band, int left_band)
2232 {
2233 int y_shift;
2234 int x_shift;
2235
2236 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
2237 return -1;
2238
2239 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
2240 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
2241
2242 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
2243 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
2244 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
2245
2246 dst->linesize[0] = src->linesize[0];
2247 dst->linesize[1] = src->linesize[1];
2248 dst->linesize[2] = src->linesize[2];
2249 return 0;
2250 }
2251
2252 /**
2253 * Pad image
2254 */
2255 int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
2256 int padtop, int padbottom, int padleft, int padright, int *color)
2257 {
2258 uint8_t *optr, *iptr;
2259 int y_shift;
2260 int x_shift;
2261 int yheight;
2262 int i, y;
2263
2264 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
2265 return -1;
2266
2267 for (i = 0; i < 3; i++) {
2268 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
2269 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
2270
2271 if (padtop || padleft) {
2272 memset(dst->data[i], color[i], dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
2273 }
2274
2275 if (padleft || padright || src) {
2276 if (src) { /* first line */
2277 iptr = src->data[i];
2278 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift);
2279 memcpy(optr, iptr, src->linesize[i]);
2280 iptr += src->linesize[i];
2281 }
2282 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + (dst->linesize[i] - (padright >> x_shift));
2283 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
2284 for (y = 0; y < yheight; y++) {
2285 memset(optr, color[i], (padleft + padright) >> x_shift);
2286 if (src) {
2287 memcpy(optr + ((padleft + padright) >> x_shift), iptr, src->linesize[i]);
2288 iptr += src->linesize[i];
2289 }
2290 optr += dst->linesize[i];
2291 }
2292 }
2293
2294 if (padbottom || padright) {
2295 optr = dst->data[i] + dst->linesize[i] * ((height - padbottom) >> y_shift) - (padright >> x_shift);
2296 memset(optr, color[i], dst->linesize[i] * (padbottom >> y_shift) + (padright >> x_shift));
2297 }
2298 }
2299 return 0;
2300 }
2301
2302 #ifndef CONFIG_SWSCALER
2303 /* XXX: always use linesize. Return -1 if not supported */
2304 int img_convert(AVPicture *dst, int dst_pix_fmt,
2305 const AVPicture *src, int src_pix_fmt,
2306 int src_width, int src_height)
2307 {
2308 static int inited;
2309 int i, ret, dst_width, dst_height, int_pix_fmt;
2310 const PixFmtInfo *src_pix, *dst_pix;
2311 const ConvertEntry *ce;
2312 AVPicture tmp1, *tmp = &tmp1;
2313
2314 if (src_pix_fmt < 0 || src_pix_fmt >= PIX_FMT_NB ||
2315 dst_pix_fmt < 0 || dst_pix_fmt >= PIX_FMT_NB)
2316 return -1;
2317 if (src_width <= 0 || src_height <= 0)
2318 return 0;
2319
2320 if (!inited) {
2321 inited = 1;
2322 img_convert_init();
2323 }
2324
2325 dst_width = src_width;
2326 dst_height = src_height;
2327
2328 dst_pix = &pix_fmt_info[dst_pix_fmt];
2329 src_pix = &pix_fmt_info[src_pix_fmt];
2330 if (src_pix_fmt == dst_pix_fmt) {
2331 /* no conversion needed: just copy */
2332 img_copy(dst, src, dst_pix_fmt, dst_width, dst_height);
2333 return 0;
2334 }
2335
2336 ce = &convert_table[src_pix_fmt][dst_pix_fmt];
2337 if (ce->convert) {
2338 /* specific conversion routine */
2339 ce->convert(dst, src, dst_width, dst_height);
2340 return 0;
2341 }
2342
2343 /* gray to YUV */
2344 if (is_yuv_planar(dst_pix) &&
2345 src_pix_fmt == PIX_FMT_GRAY8) {
2346 int w, h, y;
2347 uint8_t *d;
2348
2349 if (dst_pix->color_type == FF_COLOR_YUV_JPEG) {
2350 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2351 src->data[0], src->linesize[0],
2352 dst_width, dst_height);
2353 } else {
2354 img_apply_table(dst->data[0], dst->linesize[0],
2355 src->data[0], src->linesize[0],
2356 dst_width, dst_height,
2357 y_jpeg_to_ccir);
2358 }
2359 /* fill U and V with 128 */
2360 w = dst_width;
2361 h = dst_height;
2362 w >>= dst_pix->x_chroma_shift;
2363 h >>= dst_pix->y_chroma_shift;
2364 for(i = 1; i <= 2; i++) {
2365 d = dst->data[i];
2366 for(y = 0; y< h; y++) {
2367 memset(d, 128, w);
2368 d += dst->linesize[i];
2369 }
2370 }
2371 return 0;
2372 }
2373
2374 /* YUV to gray */
2375 if (is_yuv_planar(src_pix) &&
2376 dst_pix_fmt == PIX_FMT_GRAY8) {
2377 if (src_pix->color_type == FF_COLOR_YUV_JPEG) {
2378 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2379 src->data[0], src->linesize[0],
2380 dst_width, dst_height);
2381 } else {
2382 img_apply_table(dst->data[0], dst->linesize[0],
2383 src->data[0], src->linesize[0],
2384 dst_width, dst_height,
2385 y_ccir_to_jpeg);
2386 }
2387 return 0;
2388 }
2389
2390 /* YUV to YUV planar */
2391 if (is_yuv_planar(dst_pix) && is_yuv_planar(src_pix)) {
2392 int x_shift, y_shift, w, h, xy_shift;
2393 void (*resize_func)(uint8_t *dst, int dst_wrap,
2394 const uint8_t *src, int src_wrap,
2395 int width, int height);
2396
2397 /* compute chroma size of the smallest dimensions */
2398 w = dst_width;
2399 h = dst_height;
2400 if (dst_pix->x_chroma_shift >= src_pix->x_chroma_shift)
2401 w >>= dst_pix->x_chroma_shift;
2402 else
2403 w >>= src_pix->x_chroma_shift;
2404 if (dst_pix->y_chroma_shift >= src_pix->y_chroma_shift)
2405 h >>= dst_pix->y_chroma_shift;
2406 else
2407 h >>= src_pix->y_chroma_shift;
2408
2409 x_shift = (dst_pix->x_chroma_shift - src_pix->x_chroma_shift);
2410 y_shift = (dst_pix->y_chroma_shift - src_pix->y_chroma_shift);
2411 xy_shift = ((x_shift & 0xf) << 4) | (y_shift & 0xf);
2412 /* there must be filters for conversion at least from and to
2413 YUV444 format */
2414 switch(xy_shift) {
2415 case 0x00:
2416 resize_func = ff_img_copy_plane;
2417 break;
2418 case 0x10:
2419 resize_func = shrink21;
2420 break;
2421 case 0x20:
2422 resize_func = shrink41;
2423 break;
2424 case 0x01:
2425 resize_func = shrink12;
2426 break;
2427 case 0x11:
2428 resize_func = ff_shrink22;
2429 break;
2430 case 0x22:
2431 resize_func = ff_shrink44;
2432 break;
2433 case 0xf0:
2434 resize_func = grow21;
2435 break;
2436 case 0xe0:
2437 resize_func = grow41;
2438 break;
2439 case 0xff:
2440 resize_func = grow22;
2441 break;
2442 case 0xee:
2443 resize_func = grow44;
2444 break;
2445 case 0xf1:
2446 resize_func = conv411;
2447 break;
2448 default:
2449 /* currently not handled */
2450 goto no_chroma_filter;
2451 }
2452
2453 ff_img_copy_plane(dst->data[0], dst->linesize[0],
2454 src->data[0], src->linesize[0],
2455 dst_width, dst_height);
2456
2457 for(i = 1;i <= 2; i++)
2458 resize_func(dst->data[i], dst->linesize[i],
2459 src->data[i], src->linesize[i],
2460 dst_width>>dst_pix->x_chroma_shift, dst_height>>dst_pix->y_chroma_shift);
2461 /* if yuv color space conversion is needed, we do it here on
2462 the destination image */
2463 if (dst_pix->color_type != src_pix->color_type) {
2464 const uint8_t *y_table, *c_table;
2465 if (dst_pix->color_type == FF_COLOR_YUV) {
2466 y_table = y_jpeg_to_ccir;
2467 c_table = c_jpeg_to_ccir;
2468 } else {
2469 y_table = y_ccir_to_jpeg;
2470 c_table = c_ccir_to_jpeg;
2471 }
2472 img_apply_table(dst->data[0], dst->linesize[0],
2473 dst->data[0], dst->linesize[0],
2474 dst_width, dst_height,
2475 y_table);
2476
2477 for(i = 1;i <= 2; i++)
2478 img_apply_table(dst->data[i], dst->linesize[i],
2479 dst->data[i], dst->linesize[i],
2480 dst_width>>dst_pix->x_chroma_shift,
2481 dst_height>>dst_pix->y_chroma_shift,
2482 c_table);
2483 }
2484 return 0;
2485 }
2486 no_chroma_filter:
2487
2488 /* try to use an intermediate format */
2489 if (src_pix_fmt == PIX_FMT_YUV422 ||
2490 dst_pix_fmt == PIX_FMT_YUV422) {
2491 /* specific case: convert to YUV422P first */
2492 int_pix_fmt = PIX_FMT_YUV422P;
2493 } else if (src_pix_fmt == PIX_FMT_UYVY422 ||
2494 dst_pix_fmt == PIX_FMT_UYVY422) {
2495 /* specific case: convert to YUV422P first */
2496 int_pix_fmt = PIX_FMT_YUV422P;
2497 } else if (src_pix_fmt == PIX_FMT_UYVY411 ||
2498 dst_pix_fmt == PIX_FMT_UYVY411) {
2499 /* specific case: convert to YUV411P first */
2500 int_pix_fmt = PIX_FMT_YUV411P;
2501 } else if ((src_pix->color_type == FF_COLOR_GRAY &&
2502 src_pix_fmt != PIX_FMT_GRAY8) ||
2503 (dst_pix->color_type == FF_COLOR_GRAY &&
2504 dst_pix_fmt != PIX_FMT_GRAY8)) {
2505 /* gray8 is the normalized format */
2506 int_pix_fmt = PIX_FMT_GRAY8;
2507 } else if ((is_yuv_planar(src_pix) &&
2508 src_pix_fmt != PIX_FMT_YUV444P &&
2509 src_pix_fmt != PIX_FMT_YUVJ444P)) {
2510 /* yuv444 is the normalized format */
2511 if (src_pix->color_type == FF_COLOR_YUV_JPEG)
2512 int_pix_fmt = PIX_FMT_YUVJ444P;
2513 else
2514 int_pix_fmt = PIX_FMT_YUV444P;
2515 } else if ((is_yuv_planar(dst_pix) &&
2516 dst_pix_fmt != PIX_FMT_YUV444P &&
2517 dst_pix_fmt != PIX_FMT_YUVJ444P)) {
2518 /* yuv444 is the normalized format */
2519 if (dst_pix->color_type == FF_COLOR_YUV_JPEG)
2520 int_pix_fmt = PIX_FMT_YUVJ444P;
2521 else
2522 int_pix_fmt = PIX_FMT_YUV444P;
2523 } else {
2524 /* the two formats are rgb or gray8 or yuv[j]444p */
2525 if (src_pix->is_alpha && dst_pix->is_alpha)
2526 int_pix_fmt = PIX_FMT_RGBA32;
2527 else
2528 int_pix_fmt = PIX_FMT_RGB24;
2529 }
2530 if (avpicture_alloc(tmp, int_pix_fmt, dst_width, dst_height) < 0)
2531 return -1;
2532 ret = -1;
2533 if (img_convert(tmp, int_pix_fmt,
2534 src, src_pix_fmt, src_width, src_height) < 0)
2535 goto fail1;
2536 if (img_convert(dst, dst_pix_fmt,
2537 tmp, int_pix_fmt, dst_width, dst_height) < 0)
2538 goto fail1;
2539 ret = 0;
2540 fail1:
2541 avpicture_free(tmp);
2542 return ret;
2543 }
2544 #endif
2545
2546 /* NOTE: we scan all the pixels to have an exact information */
2547 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
2548 {
2549 const unsigned char *p;
2550 int src_wrap, ret, x, y;
2551 unsigned int a;
2552 uint32_t *palette = (uint32_t *)src->data[1];
2553
2554 p = src->data[0];
2555 src_wrap = src->linesize[0] - width;
2556 ret = 0;
2557 for(y=0;y<height;y++) {
2558 for(x=0;x<width;x++) {
2559 a = palette[p[0]] >> 24;
2560 if (a == 0x00) {
2561 ret |= FF_ALPHA_TRANSP;
2562 } else if (a != 0xff) {
2563 ret |= FF_ALPHA_SEMI_TRANSP;
2564 }
2565 p++;
2566 }
2567 p += src_wrap;
2568 }
2569 return ret;
2570 }
2571
2572 /**
2573 * Tell if an image really has transparent alpha values.
2574 * @return ored mask of FF_ALPHA_xxx constants
2575 */
2576 int img_get_alpha_info(const AVPicture *src,
2577 int pix_fmt, int width, int height)
2578 {
2579 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
2580 int ret;
2581
2582 pf = &pix_fmt_info[pix_fmt];
2583 /* no alpha can be represented in format */
2584 if (!pf->is_alpha)
2585 return 0;
2586 switch(pix_fmt) {
2587 case PIX_FMT_RGBA32:
2588 ret = get_alpha_info_rgba32(src, width, height);
2589 break;
2590 case PIX_FMT_PAL8:
2591 ret = get_alpha_info_pal8(src, width, height);
2592 break;
2593 default:
2594 /* we do not know, so everything is indicated */
2595 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
2596 break;
2597 }
2598 return ret;
2599 }
2600
2601 #ifdef HAVE_MMX
2602 #define DEINT_INPLACE_LINE_LUM \
2603 movd_m2r(lum_m4[0],mm0);\
2604 movd_m2r(lum_m3[0],mm1);\
2605 movd_m2r(lum_m2[0],mm2);\
2606 movd_m2r(lum_m1[0],mm3);\
2607 movd_m2r(lum[0],mm4);\
2608 punpcklbw_r2r(mm7,mm0);\
2609 movd_r2m(mm2,lum_m4[0]);\
2610 punpcklbw_r2r(mm7,mm1);\
2611 punpcklbw_r2r(mm7,mm2);\
2612 punpcklbw_r2r(mm7,mm3);\
2613 punpcklbw_r2r(mm7,mm4);\
2614 paddw_r2r(mm3,mm1);\
2615 psllw_i2r(1,mm2);\
2616 paddw_r2r(mm4,mm0);\
2617 psllw_i2r(2,mm1);\
2618 paddw_r2r(mm6,mm2);\
2619 paddw_r2r(mm2,mm1);\
2620 psubusw_r2r(mm0,mm1);\
2621 psrlw_i2r(3,mm1);\
2622 packuswb_r2r(mm7,mm1);\
2623 movd_r2m(mm1,lum_m2[0]);
2624
2625 #define DEINT_LINE_LUM \
2626 movd_m2r(lum_m4[0],mm0);\
2627 movd_m2r(lum_m3[0],mm1);\
2628 movd_m2r(lum_m2[0],mm2);\
2629 movd_m2r(lum_m1[0],mm3);\
2630 movd_m2r(lum[0],mm4);\
2631 punpcklbw_r2r(mm7,mm0);\
2632 punpcklbw_r2r(mm7,mm1);\
2633 punpcklbw_r2r(mm7,mm2);\
2634 punpcklbw_r2r(mm7,mm3);\
2635 punpcklbw_r2r(mm7,mm4);\
2636 paddw_r2r(mm3,mm1);\
2637 psllw_i2r(1,mm2);\
2638 paddw_r2r(mm4,mm0);\
2639 psllw_i2r(2,mm1);\
2640 paddw_r2r(mm6,mm2);\
2641 paddw_r2r(mm2,mm1);\
2642 psubusw_r2r(mm0,mm1);\
2643 psrlw_i2r(3,mm1);\
2644 packuswb_r2r(mm7,mm1);\
2645 movd_r2m(mm1,dst[0]);
2646 #endif
2647
2648 /* filter parameters: [-1 4 2 4 -1] // 8 */
2649 static void deinterlace_line(uint8_t *dst,
2650 const uint8_t *lum_m4, const uint8_t *lum_m3,
2651 const uint8_t *lum_m2, const uint8_t *lum_m1,
2652 const uint8_t *lum,
2653 int size)
2654 {
2655 #ifndef HAVE_MMX
2656 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2657 int sum;
2658
2659 for(;size > 0;size--) {
2660 sum = -lum_m4[0];
2661 sum += lum_m3[0] << 2;
2662 sum += lum_m2[0] << 1;
2663 sum += lum_m1[0] << 2;
2664 sum += -lum[0];
2665 dst[0] = cm[(sum + 4) >> 3];
2666 lum_m4++;
2667 lum_m3++;
2668 lum_m2++;
2669 lum_m1++;
2670 lum++;
2671 dst++;
2672 }
2673 #else
2674
2675 {
2676 mmx_t rounder;
2677 rounder.uw[0]=4;
2678 rounder.uw[1]=4;
2679 rounder.uw[2]=4;
2680 rounder.uw[3]=4;
2681 pxor_r2r(mm7,mm7);
2682 movq_m2r(rounder,mm6);
2683 }
2684 for (;size > 3; size-=4) {
2685 DEINT_LINE_LUM
2686 lum_m4+=4;
2687 lum_m3+=4;
2688 lum_m2+=4;
2689 lum_m1+=4;
2690 lum+=4;
2691 dst+=4;
2692 }
2693 #endif
2694 }
2695 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
2696 int size)
2697 {
2698 #ifndef HAVE_MMX
2699 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2700 int sum;
2701
2702 for(;size > 0;size--) {
2703 sum = -lum_m4[0];
2704 sum += lum_m3[0] << 2;
2705 sum += lum_m2[0] << 1;
2706 lum_m4[0]=lum_m2[0];
2707 sum += lum_m1[0] << 2;
2708 sum += -lum[0];
2709 lum_m2[0] = cm[(sum + 4) >> 3];
2710 lum_m4++;
2711 lum_m3++;
2712 lum_m2++;
2713 lum_m1++;
2714 lum++;
2715 }
2716 #else
2717
2718 {
2719 mmx_t rounder;
2720 rounder.uw[0]=4;
2721 rounder.uw[1]=4;
2722 rounder.uw[2]=4;
2723 rounder.uw[3]=4;
2724 pxor_r2r(mm7,mm7);
2725 movq_m2r(rounder,mm6);
2726 }
2727 for (;size > 3; size-=4) {
2728 DEINT_INPLACE_LINE_LUM
2729 lum_m4+=4;
2730 lum_m3+=4;
2731 lum_m2+=4;
2732 lum_m1+=4;
2733 lum+=4;
2734 }
2735 #endif
2736 }
2737
2738 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
2739 top field is copied as is, but the bottom field is deinterlaced
2740 against the top field. */
2741 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
2742 const uint8_t *src1, int src_wrap,
2743 int width, int height)
2744 {
2745 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
2746 int y;
2747
2748 src_m2 = src1;
2749 src_m1 = src1;
2750 src_0=&src_m1[src_wrap];
2751 src_p1=&src_0[src_wrap];
2752 src_p2=&src_p1[src_wrap];
2753 for(y=0;y<(height-2);y+=2) {
2754 memcpy(dst,src_m1,width);
2755 dst += dst_wrap;
2756 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
2757 src_m2 = src_0;
2758 src_m1 = src_p1;
2759 src_0 = src_p2;
2760 src_p1 += 2*src_wrap;
2761 src_p2 += 2*src_wrap;
2762 dst += dst_wrap;
2763 }
2764 memcpy(dst,src_m1,width);
2765 dst += dst_wrap;
2766 /* do last line */
2767 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
2768 }
2769
2770 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
2771 int width, int height)
2772 {
2773 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
2774 int y;
2775 uint8_t *buf;
2776 buf = (uint8_t*)av_malloc(width);
2777
2778 src_m1 = src1;
2779 memcpy(buf,src_m1,width);
2780 src_0=&src_m1[src_wrap];
2781 src_p1=&src_0[src_wrap];
2782 src_p2=&src_p1[src_wrap];
2783 for(y=0;y<(height-2);y+=2) {
2784 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
2785 src_m1 = src_p1;
2786 src_0 = src_p2;
2787 src_p1 += 2*src_wrap;
2788 src_p2 += 2*src_wrap;
2789 }
2790 /* do last line */
2791 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
2792 av_free(buf);
2793 }
2794
2795
2796 /* deinterlace - if not supported return -1 */
2797 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2798 int pix_fmt, int width, int height)
2799 {
2800 int i;
2801
2802 if (pix_fmt != PIX_FMT_YUV420P &&
2803 pix_fmt != PIX_FMT_YUV422P &&
2804 pix_fmt != PIX_FMT_YUV444P &&
2805 pix_fmt != PIX_FMT_YUV411P)
2806 return -1;
2807 if ((width & 3) != 0 || (height & 3) != 0)
2808 return -1;
2809
2810 for(i=0;i<3;i++) {
2811 if (i == 1) {
2812 switch(pix_fmt) {
2813 case PIX_FMT_YUV420P:
2814 width >>= 1;
2815 height >>= 1;
2816 break;
2817 case PIX_FMT_YUV422P:
2818 width >>= 1;
2819 break;
2820 case PIX_FMT_YUV411P:
2821 width >>= 2;
2822 break;
2823 default:
2824 break;
2825 }
2826 }
2827 if (src == dst) {
2828 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
2829 width, height);
2830 } else {
2831 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
2832 src->data[i], src->linesize[i],
2833 width, height);
2834 }
2835 }
2836 #ifdef HAVE_MMX
2837 emms();
2838 #endif
2839 return 0;
2840 }
2841
2842 #undef FIX