2 * Misc image conversion routines
3 * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
5 * This file is part of Libav.
7 * Libav 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.
12 * Libav 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.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * misc image conversion routines
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
36 #include "libavutil/colorspace.h"
37 #include "libavutil/common.h"
38 #include "libavutil/pixdesc.h"
39 #include "libavutil/imgutils.h"
42 #include "x86/dsputil_mmx.h"
45 #define FF_COLOR_RGB 0 /**< RGB color space */
46 #define FF_COLOR_GRAY 1 /**< gray color space */
47 #define FF_COLOR_YUV 2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
48 #define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
50 #define FF_PIXEL_PLANAR 0 /**< each channel has one component in AVPicture */
51 #define FF_PIXEL_PACKED 1 /**< only one components containing all the channels */
52 #define FF_PIXEL_PALETTE 2 /**< one components containing indexes for a palette */
55 #define deinterlace_line_inplace ff_deinterlace_line_inplace_mmx
56 #define deinterlace_line ff_deinterlace_line_mmx
58 #define deinterlace_line_inplace deinterlace_line_inplace_c
59 #define deinterlace_line deinterlace_line_c
62 typedef struct PixFmtInfo {
63 uint8_t nb_channels; /**< number of channels (including alpha) */
64 uint8_t color_type; /**< color type (see FF_COLOR_xxx constants) */
65 uint8_t pixel_type; /**< pixel storage type (see FF_PIXEL_xxx constants) */
66 uint8_t is_alpha : 1; /**< true if alpha can be specified */
67 uint8_t depth; /**< bit depth of the color components */
70 /* this table gives more information about formats */
71 static const PixFmtInfo pix_fmt_info[AV_PIX_FMT_NB] = {
73 [AV_PIX_FMT_YUV420P] = {
75 .color_type = FF_COLOR_YUV,
76 .pixel_type = FF_PIXEL_PLANAR,
79 [AV_PIX_FMT_YUV422P] = {
81 .color_type = FF_COLOR_YUV,
82 .pixel_type = FF_PIXEL_PLANAR,
85 [AV_PIX_FMT_YUV444P] = {
87 .color_type = FF_COLOR_YUV,
88 .pixel_type = FF_PIXEL_PLANAR,
91 [AV_PIX_FMT_YUYV422] = {
93 .color_type = FF_COLOR_YUV,
94 .pixel_type = FF_PIXEL_PACKED,
97 [AV_PIX_FMT_UYVY422] = {
99 .color_type = FF_COLOR_YUV,
100 .pixel_type = FF_PIXEL_PACKED,
103 [AV_PIX_FMT_YUV410P] = {
105 .color_type = FF_COLOR_YUV,
106 .pixel_type = FF_PIXEL_PLANAR,
109 [AV_PIX_FMT_YUV411P] = {
111 .color_type = FF_COLOR_YUV,
112 .pixel_type = FF_PIXEL_PLANAR,
115 [AV_PIX_FMT_YUV440P] = {
117 .color_type = FF_COLOR_YUV,
118 .pixel_type = FF_PIXEL_PLANAR,
121 [AV_PIX_FMT_YUV420P16LE] = {
123 .color_type = FF_COLOR_YUV,
124 .pixel_type = FF_PIXEL_PLANAR,
127 [AV_PIX_FMT_YUV422P16LE] = {
129 .color_type = FF_COLOR_YUV,
130 .pixel_type = FF_PIXEL_PLANAR,
133 [AV_PIX_FMT_YUV444P16LE] = {
135 .color_type = FF_COLOR_YUV,
136 .pixel_type = FF_PIXEL_PLANAR,
139 [AV_PIX_FMT_YUV420P16BE] = {
141 .color_type = FF_COLOR_YUV,
142 .pixel_type = FF_PIXEL_PLANAR,
145 [AV_PIX_FMT_YUV422P16BE] = {
147 .color_type = FF_COLOR_YUV,
148 .pixel_type = FF_PIXEL_PLANAR,
151 [AV_PIX_FMT_YUV444P16BE] = {
153 .color_type = FF_COLOR_YUV,
154 .pixel_type = FF_PIXEL_PLANAR,
159 /* YUV formats with alpha plane */
160 [AV_PIX_FMT_YUVA420P] = {
162 .color_type = FF_COLOR_YUV,
163 .pixel_type = FF_PIXEL_PLANAR,
168 [AV_PIX_FMT_YUVJ420P] = {
170 .color_type = FF_COLOR_YUV_JPEG,
171 .pixel_type = FF_PIXEL_PLANAR,
174 [AV_PIX_FMT_YUVJ422P] = {
176 .color_type = FF_COLOR_YUV_JPEG,
177 .pixel_type = FF_PIXEL_PLANAR,
180 [AV_PIX_FMT_YUVJ444P] = {
182 .color_type = FF_COLOR_YUV_JPEG,
183 .pixel_type = FF_PIXEL_PLANAR,
186 [AV_PIX_FMT_YUVJ440P] = {
188 .color_type = FF_COLOR_YUV_JPEG,
189 .pixel_type = FF_PIXEL_PLANAR,
194 [AV_PIX_FMT_RGB24] = {
196 .color_type = FF_COLOR_RGB,
197 .pixel_type = FF_PIXEL_PACKED,
200 [AV_PIX_FMT_BGR24] = {
202 .color_type = FF_COLOR_RGB,
203 .pixel_type = FF_PIXEL_PACKED,
206 [AV_PIX_FMT_ARGB] = {
207 .nb_channels = 4, .is_alpha = 1,
208 .color_type = FF_COLOR_RGB,
209 .pixel_type = FF_PIXEL_PACKED,
212 [AV_PIX_FMT_RGB48BE] = {
214 .color_type = FF_COLOR_RGB,
215 .pixel_type = FF_PIXEL_PACKED,
218 [AV_PIX_FMT_RGB48LE] = {
220 .color_type = FF_COLOR_RGB,
221 .pixel_type = FF_PIXEL_PACKED,
224 [AV_PIX_FMT_RGB565BE] = {
226 .color_type = FF_COLOR_RGB,
227 .pixel_type = FF_PIXEL_PACKED,
230 [AV_PIX_FMT_RGB565LE] = {
232 .color_type = FF_COLOR_RGB,
233 .pixel_type = FF_PIXEL_PACKED,
236 [AV_PIX_FMT_RGB555BE] = {
238 .color_type = FF_COLOR_RGB,
239 .pixel_type = FF_PIXEL_PACKED,
242 [AV_PIX_FMT_RGB555LE] = {
244 .color_type = FF_COLOR_RGB,
245 .pixel_type = FF_PIXEL_PACKED,
248 [AV_PIX_FMT_RGB444BE] = {
250 .color_type = FF_COLOR_RGB,
251 .pixel_type = FF_PIXEL_PACKED,
254 [AV_PIX_FMT_RGB444LE] = {
256 .color_type = FF_COLOR_RGB,
257 .pixel_type = FF_PIXEL_PACKED,
261 /* gray / mono formats */
262 [AV_PIX_FMT_GRAY16BE] = {
264 .color_type = FF_COLOR_GRAY,
265 .pixel_type = FF_PIXEL_PLANAR,
268 [AV_PIX_FMT_GRAY16LE] = {
270 .color_type = FF_COLOR_GRAY,
271 .pixel_type = FF_PIXEL_PLANAR,
274 [AV_PIX_FMT_GRAY8] = {
276 .color_type = FF_COLOR_GRAY,
277 .pixel_type = FF_PIXEL_PLANAR,
280 [AV_PIX_FMT_MONOWHITE] = {
282 .color_type = FF_COLOR_GRAY,
283 .pixel_type = FF_PIXEL_PLANAR,
286 [AV_PIX_FMT_MONOBLACK] = {
288 .color_type = FF_COLOR_GRAY,
289 .pixel_type = FF_PIXEL_PLANAR,
293 /* paletted formats */
294 [AV_PIX_FMT_PAL8] = {
295 .nb_channels = 4, .is_alpha = 1,
296 .color_type = FF_COLOR_RGB,
297 .pixel_type = FF_PIXEL_PALETTE,
300 [AV_PIX_FMT_UYYVYY411] = {
302 .color_type = FF_COLOR_YUV,
303 .pixel_type = FF_PIXEL_PACKED,
306 [AV_PIX_FMT_ABGR] = {
307 .nb_channels = 4, .is_alpha = 1,
308 .color_type = FF_COLOR_RGB,
309 .pixel_type = FF_PIXEL_PACKED,
312 [AV_PIX_FMT_BGR565BE] = {
314 .color_type = FF_COLOR_RGB,
315 .pixel_type = FF_PIXEL_PACKED,
318 [AV_PIX_FMT_BGR565LE] = {
320 .color_type = FF_COLOR_RGB,
321 .pixel_type = FF_PIXEL_PACKED,
324 [AV_PIX_FMT_BGR555BE] = {
326 .color_type = FF_COLOR_RGB,
327 .pixel_type = FF_PIXEL_PACKED,
330 [AV_PIX_FMT_BGR555LE] = {
332 .color_type = FF_COLOR_RGB,
333 .pixel_type = FF_PIXEL_PACKED,
336 [AV_PIX_FMT_BGR444BE] = {
338 .color_type = FF_COLOR_RGB,
339 .pixel_type = FF_PIXEL_PACKED,
342 [AV_PIX_FMT_BGR444LE] = {
344 .color_type = FF_COLOR_RGB,
345 .pixel_type = FF_PIXEL_PACKED,
348 [AV_PIX_FMT_RGB8] = {
350 .color_type = FF_COLOR_RGB,
351 .pixel_type = FF_PIXEL_PACKED,
354 [AV_PIX_FMT_RGB4] = {
356 .color_type = FF_COLOR_RGB,
357 .pixel_type = FF_PIXEL_PACKED,
360 [AV_PIX_FMT_RGB4_BYTE] = {
362 .color_type = FF_COLOR_RGB,
363 .pixel_type = FF_PIXEL_PACKED,
366 [AV_PIX_FMT_BGR8] = {
368 .color_type = FF_COLOR_RGB,
369 .pixel_type = FF_PIXEL_PACKED,
372 [AV_PIX_FMT_BGR4] = {
374 .color_type = FF_COLOR_RGB,
375 .pixel_type = FF_PIXEL_PACKED,
378 [AV_PIX_FMT_BGR4_BYTE] = {
380 .color_type = FF_COLOR_RGB,
381 .pixel_type = FF_PIXEL_PACKED,
384 [AV_PIX_FMT_NV12] = {
386 .color_type = FF_COLOR_YUV,
387 .pixel_type = FF_PIXEL_PLANAR,
390 [AV_PIX_FMT_NV21] = {
392 .color_type = FF_COLOR_YUV,
393 .pixel_type = FF_PIXEL_PLANAR,
397 [AV_PIX_FMT_BGRA] = {
398 .nb_channels = 4, .is_alpha = 1,
399 .color_type = FF_COLOR_RGB,
400 .pixel_type = FF_PIXEL_PACKED,
403 [AV_PIX_FMT_RGBA] = {
404 .nb_channels = 4, .is_alpha = 1,
405 .color_type = FF_COLOR_RGB,
406 .pixel_type = FF_PIXEL_PACKED,
411 void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
413 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
414 *h_shift = desc->log2_chroma_w;
415 *v_shift = desc->log2_chroma_h;
419 int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat src_pix_fmt,
422 const PixFmtInfo *pf, *ps;
423 const AVPixFmtDescriptor *src_desc = av_pix_fmt_desc_get(src_pix_fmt);
424 const AVPixFmtDescriptor *dst_desc = av_pix_fmt_desc_get(dst_pix_fmt);
427 ps = &pix_fmt_info[src_pix_fmt];
431 pf = &pix_fmt_info[dst_pix_fmt];
432 if (pf->depth < ps->depth ||
433 ((dst_pix_fmt == AV_PIX_FMT_RGB555BE || dst_pix_fmt == AV_PIX_FMT_RGB555LE ||
434 dst_pix_fmt == AV_PIX_FMT_BGR555BE || dst_pix_fmt == AV_PIX_FMT_BGR555LE) &&
435 (src_pix_fmt == AV_PIX_FMT_RGB565BE || src_pix_fmt == AV_PIX_FMT_RGB565LE ||
436 src_pix_fmt == AV_PIX_FMT_BGR565BE || src_pix_fmt == AV_PIX_FMT_BGR565LE)))
437 loss |= FF_LOSS_DEPTH;
438 if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
439 dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
440 loss |= FF_LOSS_RESOLUTION;
441 switch(pf->color_type) {
443 if (ps->color_type != FF_COLOR_RGB &&
444 ps->color_type != FF_COLOR_GRAY)
445 loss |= FF_LOSS_COLORSPACE;
448 if (ps->color_type != FF_COLOR_GRAY)
449 loss |= FF_LOSS_COLORSPACE;
452 if (ps->color_type != FF_COLOR_YUV)
453 loss |= FF_LOSS_COLORSPACE;
455 case FF_COLOR_YUV_JPEG:
456 if (ps->color_type != FF_COLOR_YUV_JPEG &&
457 ps->color_type != FF_COLOR_YUV &&
458 ps->color_type != FF_COLOR_GRAY)
459 loss |= FF_LOSS_COLORSPACE;
463 if (ps->color_type != pf->color_type)
464 loss |= FF_LOSS_COLORSPACE;
467 if (pf->color_type == FF_COLOR_GRAY &&
468 ps->color_type != FF_COLOR_GRAY)
469 loss |= FF_LOSS_CHROMA;
470 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
471 loss |= FF_LOSS_ALPHA;
472 if (pf->pixel_type == FF_PIXEL_PALETTE &&
473 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
474 loss |= FF_LOSS_COLORQUANT;
478 static int avg_bits_per_pixel(enum AVPixelFormat pix_fmt)
481 const PixFmtInfo *pf;
482 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
484 pf = &pix_fmt_info[pix_fmt];
485 switch(pf->pixel_type) {
486 case FF_PIXEL_PACKED:
488 case AV_PIX_FMT_YUYV422:
489 case AV_PIX_FMT_UYVY422:
490 case AV_PIX_FMT_RGB565BE:
491 case AV_PIX_FMT_RGB565LE:
492 case AV_PIX_FMT_RGB555BE:
493 case AV_PIX_FMT_RGB555LE:
494 case AV_PIX_FMT_RGB444BE:
495 case AV_PIX_FMT_RGB444LE:
496 case AV_PIX_FMT_BGR565BE:
497 case AV_PIX_FMT_BGR565LE:
498 case AV_PIX_FMT_BGR555BE:
499 case AV_PIX_FMT_BGR555LE:
500 case AV_PIX_FMT_BGR444BE:
501 case AV_PIX_FMT_BGR444LE:
504 case AV_PIX_FMT_UYYVYY411:
508 bits = pf->depth * pf->nb_channels;
512 case FF_PIXEL_PLANAR:
513 if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) {
514 bits = pf->depth * pf->nb_channels;
516 bits = pf->depth + ((2 * pf->depth) >>
517 (desc->log2_chroma_w + desc->log2_chroma_h));
520 case FF_PIXEL_PALETTE:
530 static enum AVPixelFormat avcodec_find_best_pix_fmt1(enum AVPixelFormat *pix_fmt_list,
531 enum AVPixelFormat src_pix_fmt,
535 int dist, i, loss, min_dist;
536 enum AVPixelFormat dst_pix_fmt;
538 /* find exact color match with smallest size */
539 dst_pix_fmt = AV_PIX_FMT_NONE;
540 min_dist = 0x7fffffff;
542 while (pix_fmt_list[i] != AV_PIX_FMT_NONE) {
543 enum AVPixelFormat pix_fmt = pix_fmt_list[i];
545 if (i > AV_PIX_FMT_NB) {
546 av_log(NULL, AV_LOG_ERROR, "Pixel format list longer than expected, "
547 "it is either not properly terminated or contains duplicates\n");
548 return AV_PIX_FMT_NONE;
551 loss = avcodec_get_pix_fmt_loss(pix_fmt, src_pix_fmt, has_alpha) & loss_mask;
553 dist = avg_bits_per_pixel(pix_fmt);
554 if (dist < min_dist) {
556 dst_pix_fmt = pix_fmt;
564 #if FF_API_FIND_BEST_PIX_FMT
565 enum AVPixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum AVPixelFormat src_pix_fmt,
566 int has_alpha, int *loss_ptr)
568 enum AVPixelFormat list[64];
571 // test only the first 64 pixel formats to avoid undefined behaviour
572 for (i = 0; i < 64; i++) {
573 if (pix_fmt_mask & (1ULL << i))
576 list[j] = AV_PIX_FMT_NONE;
578 return avcodec_find_best_pix_fmt2(list, src_pix_fmt, has_alpha, loss_ptr);
580 #endif /* FF_API_FIND_BEST_PIX_FMT */
582 enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat *pix_fmt_list,
583 enum AVPixelFormat src_pix_fmt,
584 int has_alpha, int *loss_ptr)
586 enum AVPixelFormat dst_pix_fmt;
588 static const int loss_mask_order[] = {
589 ~0, /* no loss first */
592 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
598 /* try with successive loss */
601 loss_mask = loss_mask_order[i++];
602 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_list, src_pix_fmt,
603 has_alpha, loss_mask);
604 if (dst_pix_fmt >= 0)
609 return AV_PIX_FMT_NONE;
612 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
617 void ff_shrink22(uint8_t *dst, int dst_wrap,
618 const uint8_t *src, int src_wrap,
619 int width, int height)
622 const uint8_t *s1, *s2;
625 for(;height > 0; height--) {
629 for(w = width;w >= 4; w-=4) {
630 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
631 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
632 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
633 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
639 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
650 void ff_shrink44(uint8_t *dst, int dst_wrap,
651 const uint8_t *src, int src_wrap,
652 int width, int height)
655 const uint8_t *s1, *s2, *s3, *s4;
658 for(;height > 0; height--) {
664 for(w = width;w > 0; w--) {
665 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
666 s2[0] + s2[1] + s2[2] + s2[3] +
667 s3[0] + s3[1] + s3[2] + s3[3] +
668 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
681 void ff_shrink88(uint8_t *dst, int dst_wrap,
682 const uint8_t *src, int src_wrap,
683 int width, int height)
687 for(;height > 0; height--) {
688 for(w = width;w > 0; w--) {
691 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
694 *(dst++) = (tmp + 32)>>6;
695 src += 8 - 8*src_wrap;
697 src += 8*src_wrap - 8*width;
698 dst += dst_wrap - width;
702 /* return true if yuv planar */
703 static inline int is_yuv_planar(const PixFmtInfo *ps)
705 return (ps->color_type == FF_COLOR_YUV ||
706 ps->color_type == FF_COLOR_YUV_JPEG) &&
707 ps->pixel_type == FF_PIXEL_PLANAR;
710 int av_picture_crop(AVPicture *dst, const AVPicture *src,
711 enum AVPixelFormat pix_fmt, int top_band, int left_band)
713 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
717 if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
720 y_shift = desc->log2_chroma_h;
721 x_shift = desc->log2_chroma_w;
723 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
724 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
725 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
727 dst->linesize[0] = src->linesize[0];
728 dst->linesize[1] = src->linesize[1];
729 dst->linesize[2] = src->linesize[2];
733 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
734 enum AVPixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
737 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
744 if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB ||
745 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
747 for (i = 0; i < 3; i++) {
748 x_shift = i ? desc->log2_chroma_w : 0;
749 y_shift = i ? desc->log2_chroma_h : 0;
751 if (padtop || padleft) {
752 memset(dst->data[i], color[i],
753 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
756 if (padleft || padright) {
757 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
758 (dst->linesize[i] - (padright >> x_shift));
759 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
760 for (y = 0; y < yheight; y++) {
761 memset(optr, color[i], (padleft + padright) >> x_shift);
762 optr += dst->linesize[i];
766 if (src) { /* first line */
767 uint8_t *iptr = src->data[i];
768 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
769 (padleft >> x_shift);
770 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
771 iptr += src->linesize[i];
772 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
773 (dst->linesize[i] - (padright >> x_shift));
774 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
775 for (y = 0; y < yheight; y++) {
776 memset(optr, color[i], (padleft + padright) >> x_shift);
777 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
778 (width - padleft - padright) >> x_shift);
779 iptr += src->linesize[i];
780 optr += dst->linesize[i];
784 if (padbottom || padright) {
785 optr = dst->data[i] + dst->linesize[i] *
786 ((height - padbottom) >> y_shift) - (padright >> x_shift);
787 memset(optr, color[i],dst->linesize[i] *
788 (padbottom >> y_shift) + (padright >> x_shift));
794 #if !HAVE_MMX_EXTERNAL
795 /* filter parameters: [-1 4 2 4 -1] // 8 */
796 static void deinterlace_line_c(uint8_t *dst,
797 const uint8_t *lum_m4, const uint8_t *lum_m3,
798 const uint8_t *lum_m2, const uint8_t *lum_m1,
802 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
805 for(;size > 0;size--) {
807 sum += lum_m3[0] << 2;
808 sum += lum_m2[0] << 1;
809 sum += lum_m1[0] << 2;
811 dst[0] = cm[(sum + 4) >> 3];
821 static void deinterlace_line_inplace_c(uint8_t *lum_m4, uint8_t *lum_m3,
822 uint8_t *lum_m2, uint8_t *lum_m1,
823 uint8_t *lum, int size)
825 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
828 for(;size > 0;size--) {
830 sum += lum_m3[0] << 2;
831 sum += lum_m2[0] << 1;
833 sum += lum_m1[0] << 2;
835 lum_m2[0] = cm[(sum + 4) >> 3];
843 #endif /* !HAVE_MMX_EXTERNAL */
845 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
846 top field is copied as is, but the bottom field is deinterlaced
847 against the top field. */
848 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
849 const uint8_t *src1, int src_wrap,
850 int width, int height)
852 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
857 src_0=&src_m1[src_wrap];
858 src_p1=&src_0[src_wrap];
859 src_p2=&src_p1[src_wrap];
860 for(y=0;y<(height-2);y+=2) {
861 memcpy(dst,src_m1,width);
863 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
867 src_p1 += 2*src_wrap;
868 src_p2 += 2*src_wrap;
871 memcpy(dst,src_m1,width);
874 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
877 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
878 int width, int height)
880 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
883 buf = av_malloc(width);
886 memcpy(buf,src_m1,width);
887 src_0=&src_m1[src_wrap];
888 src_p1=&src_0[src_wrap];
889 src_p2=&src_p1[src_wrap];
890 for(y=0;y<(height-2);y+=2) {
891 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
894 src_p1 += 2*src_wrap;
895 src_p2 += 2*src_wrap;
898 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
902 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
903 enum AVPixelFormat pix_fmt, int width, int height)
907 if (pix_fmt != AV_PIX_FMT_YUV420P &&
908 pix_fmt != AV_PIX_FMT_YUVJ420P &&
909 pix_fmt != AV_PIX_FMT_YUV422P &&
910 pix_fmt != AV_PIX_FMT_YUVJ422P &&
911 pix_fmt != AV_PIX_FMT_YUV444P &&
912 pix_fmt != AV_PIX_FMT_YUV411P &&
913 pix_fmt != AV_PIX_FMT_GRAY8)
915 if ((width & 3) != 0 || (height & 3) != 0)
921 case AV_PIX_FMT_YUVJ420P:
922 case AV_PIX_FMT_YUV420P:
926 case AV_PIX_FMT_YUV422P:
927 case AV_PIX_FMT_YUVJ422P:
930 case AV_PIX_FMT_YUV411P:
936 if (pix_fmt == AV_PIX_FMT_GRAY8) {
941 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
944 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
945 src->data[i], src->linesize[i],