2 * Misc image conversion routines
3 * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
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.
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
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 "imgconvert.h"
37 #include "libavutil/colorspace.h"
38 #include "libavutil/pixdesc.h"
39 #include "libavutil/imgutils.h"
41 #if HAVE_MMX && HAVE_YASM
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 #if HAVE_MMX && HAVE_YASM
51 #define deinterlace_line_inplace ff_deinterlace_line_inplace_mmx
52 #define deinterlace_line ff_deinterlace_line_mmx
54 #define deinterlace_line_inplace deinterlace_line_inplace_c
55 #define deinterlace_line deinterlace_line_c
58 typedef struct PixFmtInfo {
59 uint8_t color_type; /**< color type (see FF_COLOR_xxx constants) */
60 uint8_t is_alpha : 1; /**< true if alpha can be specified */
61 uint8_t padded_size; /**< padded size in bits if different from the non-padded size */
64 /* this table gives more information about formats */
65 static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
68 .color_type = FF_COLOR_YUV,
71 .color_type = FF_COLOR_YUV,
74 .color_type = FF_COLOR_YUV,
77 .color_type = FF_COLOR_YUV,
80 .color_type = FF_COLOR_YUV,
83 .color_type = FF_COLOR_YUV,
86 .color_type = FF_COLOR_YUV,
89 .color_type = FF_COLOR_YUV,
91 [PIX_FMT_YUV420P16LE] = {
92 .color_type = FF_COLOR_YUV,
94 [PIX_FMT_YUV422P16LE] = {
95 .color_type = FF_COLOR_YUV,
97 [PIX_FMT_YUV444P16LE] = {
98 .color_type = FF_COLOR_YUV,
100 [PIX_FMT_YUV420P16BE] = {
101 .color_type = FF_COLOR_YUV,
103 [PIX_FMT_YUV422P16BE] = {
104 .color_type = FF_COLOR_YUV,
106 [PIX_FMT_YUV444P16BE] = {
107 .color_type = FF_COLOR_YUV,
110 /* YUV formats with alpha plane */
111 [PIX_FMT_YUVA420P] = {
112 .color_type = FF_COLOR_YUV,
116 [PIX_FMT_YUVJ420P] = {
117 .color_type = FF_COLOR_YUV_JPEG,
119 [PIX_FMT_YUVJ422P] = {
120 .color_type = FF_COLOR_YUV_JPEG,
122 [PIX_FMT_YUVJ444P] = {
123 .color_type = FF_COLOR_YUV_JPEG,
125 [PIX_FMT_YUVJ440P] = {
126 .color_type = FF_COLOR_YUV_JPEG,
131 .color_type = FF_COLOR_RGB,
134 .color_type = FF_COLOR_RGB,
138 .color_type = FF_COLOR_RGB,
140 [PIX_FMT_RGB48BE] = {
141 .color_type = FF_COLOR_RGB,
143 [PIX_FMT_RGB48LE] = {
144 .color_type = FF_COLOR_RGB,
146 [PIX_FMT_RGB565BE] = {
147 .color_type = FF_COLOR_RGB,
149 [PIX_FMT_RGB565LE] = {
150 .color_type = FF_COLOR_RGB,
152 [PIX_FMT_RGB555BE] = {
153 .color_type = FF_COLOR_RGB,
156 [PIX_FMT_RGB555LE] = {
157 .color_type = FF_COLOR_RGB,
160 [PIX_FMT_RGB444BE] = {
161 .color_type = FF_COLOR_RGB,
164 [PIX_FMT_RGB444LE] = {
165 .color_type = FF_COLOR_RGB,
169 /* gray / mono formats */
170 [PIX_FMT_GRAY16BE] = {
171 .color_type = FF_COLOR_GRAY,
173 [PIX_FMT_GRAY16LE] = {
174 .color_type = FF_COLOR_GRAY,
177 .color_type = FF_COLOR_GRAY,
179 [PIX_FMT_MONOWHITE] = {
180 .color_type = FF_COLOR_GRAY,
182 [PIX_FMT_MONOBLACK] = {
183 .color_type = FF_COLOR_GRAY,
186 /* paletted formats */
189 .color_type = FF_COLOR_RGB,
191 [PIX_FMT_UYYVYY411] = {
192 .color_type = FF_COLOR_YUV,
196 .color_type = FF_COLOR_RGB,
198 [PIX_FMT_BGR565BE] = {
199 .color_type = FF_COLOR_RGB,
202 [PIX_FMT_BGR565LE] = {
203 .color_type = FF_COLOR_RGB,
206 [PIX_FMT_BGR555BE] = {
207 .color_type = FF_COLOR_RGB,
210 [PIX_FMT_BGR555LE] = {
211 .color_type = FF_COLOR_RGB,
214 [PIX_FMT_BGR444BE] = {
215 .color_type = FF_COLOR_RGB,
218 [PIX_FMT_BGR444LE] = {
219 .color_type = FF_COLOR_RGB,
223 .color_type = FF_COLOR_RGB,
226 .color_type = FF_COLOR_RGB,
228 [PIX_FMT_RGB4_BYTE] = {
229 .color_type = FF_COLOR_RGB,
233 .color_type = FF_COLOR_RGB,
236 .color_type = FF_COLOR_RGB,
238 [PIX_FMT_BGR4_BYTE] = {
239 .color_type = FF_COLOR_RGB,
243 .color_type = FF_COLOR_YUV,
246 .color_type = FF_COLOR_YUV,
251 .color_type = FF_COLOR_RGB,
255 .color_type = FF_COLOR_RGB,
259 void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
261 *h_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
262 *v_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
265 #if FF_API_GET_PIX_FMT_NAME
266 const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
268 return av_get_pix_fmt_name(pix_fmt);
272 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
274 return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL;
277 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
278 enum PixelFormat pix_fmt, int width, int height)
282 if ((ret = av_image_check_size(width, height, 0, NULL)) < 0)
285 if ((ret = av_image_fill_linesizes(picture->linesize, pix_fmt, width)) < 0)
288 return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize);
291 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
292 unsigned char *dest, int dest_size)
294 int i, j, nb_planes = 0, linesizes[4];
295 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
296 int size = avpicture_get_size(pix_fmt, width, height);
298 if (size > dest_size || size < 0)
299 return AVERROR(EINVAL);
301 for (i = 0; i < desc->nb_components; i++)
302 nb_planes = FFMAX(desc->comp[i].plane, nb_planes);
305 av_image_fill_linesizes(linesizes, pix_fmt, width);
306 for (i = 0; i < nb_planes; i++) {
307 int h, shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
308 const unsigned char *s = src->data[i];
309 h = (height + (1 << shift) - 1) >> shift;
311 for (j = 0; j < h; j++) {
312 memcpy(dest, s, linesizes[i]);
313 dest += linesizes[i];
314 s += src->linesize[i];
318 if (desc->flags & PIX_FMT_PAL)
319 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
324 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
326 AVPicture dummy_pict;
327 if(av_image_check_size(width, height, 0, NULL))
332 case PIX_FMT_RGB4_BYTE:
333 case PIX_FMT_BGR4_BYTE:
335 // do not include palette for these pseudo-paletted formats
336 return width * height;
338 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
341 static int get_pix_fmt_depth(int *min, int *max, enum PixelFormat pix_fmt)
343 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
346 if (!desc->nb_components) {
348 return AVERROR(EINVAL);
351 *min = INT_MAX, *max = -INT_MAX;
352 for (i = 0; i < desc->nb_components; i++) {
353 *min = FFMIN(desc->comp[i].depth_minus1+1, *min);
354 *max = FFMAX(desc->comp[i].depth_minus1+1, *max);
359 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
362 if (dst_pix_fmt>=PIX_FMT_NB || dst_pix_fmt<=PIX_FMT_NONE)
365 const PixFmtInfo *pf, *ps;
366 const AVPixFmtDescriptor *src_desc = &av_pix_fmt_descriptors[src_pix_fmt];
367 const AVPixFmtDescriptor *dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt];
368 int src_min_depth, src_max_depth, dst_min_depth, dst_max_depth;
371 ps = &pix_fmt_info[src_pix_fmt];
376 if ((ret = get_pix_fmt_depth(&src_min_depth, &src_max_depth, src_pix_fmt)) < 0)
378 if ((ret = get_pix_fmt_depth(&dst_min_depth, &dst_max_depth, dst_pix_fmt)) < 0)
380 if (dst_min_depth < src_min_depth ||
381 dst_max_depth < src_max_depth)
382 loss |= FF_LOSS_DEPTH;
383 if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
384 dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
385 loss |= FF_LOSS_RESOLUTION;
387 pf = &pix_fmt_info[dst_pix_fmt];
388 switch(pf->color_type) {
390 if (ps->color_type != FF_COLOR_RGB &&
391 ps->color_type != FF_COLOR_GRAY)
392 loss |= FF_LOSS_COLORSPACE;
395 if (ps->color_type != FF_COLOR_GRAY)
396 loss |= FF_LOSS_COLORSPACE;
399 if (ps->color_type != FF_COLOR_YUV)
400 loss |= FF_LOSS_COLORSPACE;
402 case FF_COLOR_YUV_JPEG:
403 if (ps->color_type != FF_COLOR_YUV_JPEG &&
404 ps->color_type != FF_COLOR_YUV &&
405 ps->color_type != FF_COLOR_GRAY)
406 loss |= FF_LOSS_COLORSPACE;
410 if (ps->color_type != pf->color_type)
411 loss |= FF_LOSS_COLORSPACE;
414 if (pf->color_type == FF_COLOR_GRAY &&
415 ps->color_type != FF_COLOR_GRAY)
416 loss |= FF_LOSS_CHROMA;
417 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
418 loss |= FF_LOSS_ALPHA;
419 if (dst_pix_fmt == PIX_FMT_PAL8 &&
420 (src_pix_fmt != PIX_FMT_PAL8 && ps->color_type != FF_COLOR_GRAY))
421 loss |= FF_LOSS_COLORQUANT;
425 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
427 const PixFmtInfo *info = &pix_fmt_info[pix_fmt];
428 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
430 return info->padded_size ?
431 info->padded_size : av_get_bits_per_pixel(desc);
434 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
435 int has_alpha, int *loss_ptr)
437 enum PixelFormat dst_pix_fmt;
440 if (loss_ptr) /* all losses count (for backward compatibility) */
443 dst_pix_fmt = PIX_FMT_NONE; /* so first iteration doesn't have to be treated special */
444 for(i = 0; i< FFMIN(PIX_FMT_NB, 64); i++){
445 if (pix_fmt_mask & (1ULL << i))
446 dst_pix_fmt = avcodec_find_best_pix_fmt2(dst_pix_fmt, i, src_pix_fmt, has_alpha, loss_ptr);
451 enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
452 enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
454 enum PixelFormat dst_pix_fmt;
455 int loss1, loss2, loss_order1, loss_order2, i, loss_mask;
456 static const int loss_mask_order[] = {
457 ~0, /* no loss first */
460 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
463 ~(FF_LOSS_RESOLUTION | FF_LOSS_DEPTH | FF_LOSS_COLORSPACE | FF_LOSS_ALPHA |
464 FF_LOSS_COLORQUANT | FF_LOSS_CHROMA),
465 0x80000, //non zero entry that combines all loss variants including future additions
469 loss_mask= loss_ptr?~*loss_ptr:~0; /* use loss mask if provided */
470 dst_pix_fmt = PIX_FMT_NONE;
471 loss1 = avcodec_get_pix_fmt_loss(dst_pix_fmt1, src_pix_fmt, has_alpha) & loss_mask;
472 loss2 = avcodec_get_pix_fmt_loss(dst_pix_fmt2, src_pix_fmt, has_alpha) & loss_mask;
474 /* try with successive loss */
475 for(i = 0;loss_mask_order[i] != 0 && dst_pix_fmt == PIX_FMT_NONE;i++) {
476 loss_order1 = loss1 & loss_mask_order[i];
477 loss_order2 = loss2 & loss_mask_order[i];
479 if (loss_order1 == 0 && loss_order2 == 0){ /* use format with smallest depth */
480 dst_pix_fmt = avg_bits_per_pixel(dst_pix_fmt2) < avg_bits_per_pixel(dst_pix_fmt1) ? dst_pix_fmt2 : dst_pix_fmt1;
481 } else if (loss_order1 == 0 || loss_order2 == 0) { /* use format with no loss */
482 dst_pix_fmt = loss_order2 ? dst_pix_fmt1 : dst_pix_fmt2;
487 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
491 void av_picture_copy(AVPicture *dst, const AVPicture *src,
492 enum PixelFormat pix_fmt, int width, int height)
494 av_image_copy(dst->data, dst->linesize, src->data,
495 src->linesize, pix_fmt, width, height);
499 void ff_shrink22(uint8_t *dst, int dst_wrap,
500 const uint8_t *src, int src_wrap,
501 int width, int height)
504 const uint8_t *s1, *s2;
507 for(;height > 0; height--) {
511 for(w = width;w >= 4; w-=4) {
512 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
513 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
514 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
515 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
521 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
532 void ff_shrink44(uint8_t *dst, int dst_wrap,
533 const uint8_t *src, int src_wrap,
534 int width, int height)
537 const uint8_t *s1, *s2, *s3, *s4;
540 for(;height > 0; height--) {
546 for(w = width;w > 0; w--) {
547 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
548 s2[0] + s2[1] + s2[2] + s2[3] +
549 s3[0] + s3[1] + s3[2] + s3[3] +
550 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
563 void ff_shrink88(uint8_t *dst, int dst_wrap,
564 const uint8_t *src, int src_wrap,
565 int width, int height)
569 for(;height > 0; height--) {
570 for(w = width;w > 0; w--) {
573 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
576 *(dst++) = (tmp + 32)>>6;
577 src += 8 - 8*src_wrap;
579 src += 8*src_wrap - 8*width;
580 dst += dst_wrap - width;
585 int avpicture_alloc(AVPicture *picture,
586 enum PixelFormat pix_fmt, int width, int height)
590 if ((ret = av_image_alloc(picture->data, picture->linesize, width, height, pix_fmt, 1)) < 0) {
591 memset(picture, 0, sizeof(AVPicture));
598 void avpicture_free(AVPicture *picture)
600 av_free(picture->data[0]);
603 /* return true if yuv planar */
604 static inline int is_yuv_planar(enum PixelFormat fmt)
606 const PixFmtInfo *info = &pix_fmt_info[fmt];
607 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[fmt];
609 int planes[4] = { 0 };
611 if (info->color_type != FF_COLOR_YUV &&
612 info->color_type != FF_COLOR_YUV_JPEG)
615 /* set the used planes */
616 for (i = 0; i < desc->nb_components; i++)
617 planes[desc->comp[i].plane] = 1;
619 /* if there is an unused plane, the format is not planar */
620 for (i = 0; i < desc->nb_components; i++)
626 int av_picture_crop(AVPicture *dst, const AVPicture *src,
627 enum PixelFormat pix_fmt, int top_band, int left_band)
632 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
635 y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
636 x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
638 if (is_yuv_planar(pix_fmt)) {
639 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
640 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
641 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
643 if(top_band % (1<<y_shift) || left_band % (1<<x_shift))
645 if(left_band) //FIXME add support for this too
647 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
650 dst->linesize[0] = src->linesize[0];
651 dst->linesize[1] = src->linesize[1];
652 dst->linesize[2] = src->linesize[2];
656 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
657 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
666 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
667 !is_yuv_planar(pix_fmt)) return -1;
669 for (i = 0; i < 3; i++) {
670 x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0;
671 y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0;
673 if (padtop || padleft) {
674 memset(dst->data[i], color[i],
675 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
678 if (padleft || padright) {
679 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
680 (dst->linesize[i] - (padright >> x_shift));
681 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
682 for (y = 0; y < yheight; y++) {
683 memset(optr, color[i], (padleft + padright) >> x_shift);
684 optr += dst->linesize[i];
688 if (src) { /* first line */
689 uint8_t *iptr = src->data[i];
690 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
691 (padleft >> x_shift);
692 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
693 iptr += src->linesize[i];
694 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
695 (dst->linesize[i] - (padright >> x_shift));
696 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
697 for (y = 0; y < yheight; y++) {
698 memset(optr, color[i], (padleft + padright) >> x_shift);
699 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
700 (width - padleft - padright) >> x_shift);
701 iptr += src->linesize[i];
702 optr += dst->linesize[i];
706 if (padbottom || padright) {
707 optr = dst->data[i] + dst->linesize[i] *
708 ((height - padbottom) >> y_shift) - (padright >> x_shift);
709 memset(optr, color[i],dst->linesize[i] *
710 (padbottom >> y_shift) + (padright >> x_shift));
716 /* NOTE: we scan all the pixels to have an exact information */
717 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
719 const unsigned char *p;
720 int src_wrap, ret, x, y;
722 uint32_t *palette = (uint32_t *)src->data[1];
725 src_wrap = src->linesize[0] - width;
727 for(y=0;y<height;y++) {
728 for(x=0;x<width;x++) {
729 a = palette[p[0]] >> 24;
731 ret |= FF_ALPHA_TRANSP;
732 } else if (a != 0xff) {
733 ret |= FF_ALPHA_SEMI_TRANSP;
742 int img_get_alpha_info(const AVPicture *src,
743 enum PixelFormat pix_fmt, int width, int height)
745 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
748 /* no alpha can be represented in format */
753 ret = get_alpha_info_pal8(src, width, height);
756 /* we do not know, so everything is indicated */
757 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
763 #if !(HAVE_MMX && HAVE_YASM)
764 /* filter parameters: [-1 4 2 4 -1] // 8 */
765 static void deinterlace_line_c(uint8_t *dst,
766 const uint8_t *lum_m4, const uint8_t *lum_m3,
767 const uint8_t *lum_m2, const uint8_t *lum_m1,
771 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
774 for(;size > 0;size--) {
776 sum += lum_m3[0] << 2;
777 sum += lum_m2[0] << 1;
778 sum += lum_m1[0] << 2;
780 dst[0] = cm[(sum + 4) >> 3];
790 static void deinterlace_line_inplace_c(uint8_t *lum_m4, uint8_t *lum_m3,
791 uint8_t *lum_m2, uint8_t *lum_m1,
792 uint8_t *lum, int size)
794 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
797 for(;size > 0;size--) {
799 sum += lum_m3[0] << 2;
800 sum += lum_m2[0] << 1;
802 sum += lum_m1[0] << 2;
804 lum_m2[0] = cm[(sum + 4) >> 3];
814 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
815 top field is copied as is, but the bottom field is deinterlaced
816 against the top field. */
817 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
818 const uint8_t *src1, int src_wrap,
819 int width, int height)
821 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
826 src_0=&src_m1[src_wrap];
827 src_p1=&src_0[src_wrap];
828 src_p2=&src_p1[src_wrap];
829 for(y=0;y<(height-2);y+=2) {
830 memcpy(dst,src_m1,width);
832 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
836 src_p1 += 2*src_wrap;
837 src_p2 += 2*src_wrap;
840 memcpy(dst,src_m1,width);
843 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
846 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
847 int width, int height)
849 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
852 buf = (uint8_t*)av_malloc(width);
855 memcpy(buf,src_m1,width);
856 src_0=&src_m1[src_wrap];
857 src_p1=&src_0[src_wrap];
858 src_p2=&src_p1[src_wrap];
859 for(y=0;y<(height-2);y+=2) {
860 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
863 src_p1 += 2*src_wrap;
864 src_p2 += 2*src_wrap;
867 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
871 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
872 enum PixelFormat pix_fmt, int width, int height)
876 if (pix_fmt != PIX_FMT_YUV420P &&
877 pix_fmt != PIX_FMT_YUVJ420P &&
878 pix_fmt != PIX_FMT_YUV422P &&
879 pix_fmt != PIX_FMT_YUVJ422P &&
880 pix_fmt != PIX_FMT_YUV444P &&
881 pix_fmt != PIX_FMT_YUV411P &&
882 pix_fmt != PIX_FMT_GRAY8)
884 if ((width & 3) != 0 || (height & 3) != 0)
890 case PIX_FMT_YUVJ420P:
891 case PIX_FMT_YUV420P:
895 case PIX_FMT_YUV422P:
896 case PIX_FMT_YUVJ422P:
899 case PIX_FMT_YUV411P:
905 if (pix_fmt == PIX_FMT_GRAY8) {
910 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
913 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
914 src->data[i], src->linesize[i],