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_RGBA64BE] = {
148 .color_type = FF_COLOR_RGB,
150 [PIX_FMT_RGBA64LE] = {
152 .color_type = FF_COLOR_RGB,
154 [PIX_FMT_RGB565BE] = {
155 .color_type = FF_COLOR_RGB,
157 [PIX_FMT_RGB565LE] = {
158 .color_type = FF_COLOR_RGB,
160 [PIX_FMT_RGB555BE] = {
161 .color_type = FF_COLOR_RGB,
164 [PIX_FMT_RGB555LE] = {
165 .color_type = FF_COLOR_RGB,
168 [PIX_FMT_RGB444BE] = {
169 .color_type = FF_COLOR_RGB,
172 [PIX_FMT_RGB444LE] = {
173 .color_type = FF_COLOR_RGB,
177 /* gray / mono formats */
178 [PIX_FMT_GRAY16BE] = {
179 .color_type = FF_COLOR_GRAY,
181 [PIX_FMT_GRAY16LE] = {
182 .color_type = FF_COLOR_GRAY,
185 .color_type = FF_COLOR_GRAY,
187 [PIX_FMT_MONOWHITE] = {
188 .color_type = FF_COLOR_GRAY,
190 [PIX_FMT_MONOBLACK] = {
191 .color_type = FF_COLOR_GRAY,
194 /* paletted formats */
197 .color_type = FF_COLOR_RGB,
199 [PIX_FMT_UYYVYY411] = {
200 .color_type = FF_COLOR_YUV,
204 .color_type = FF_COLOR_RGB,
206 [PIX_FMT_BGR48BE] = {
207 .color_type = FF_COLOR_RGB,
209 [PIX_FMT_BGR48LE] = {
210 .color_type = FF_COLOR_RGB,
212 [PIX_FMT_BGRA64BE] = {
214 .color_type = FF_COLOR_RGB,
216 [PIX_FMT_BGRA64LE] = {
218 .color_type = FF_COLOR_RGB,
220 [PIX_FMT_BGR565BE] = {
221 .color_type = FF_COLOR_RGB,
224 [PIX_FMT_BGR565LE] = {
225 .color_type = FF_COLOR_RGB,
228 [PIX_FMT_BGR555BE] = {
229 .color_type = FF_COLOR_RGB,
232 [PIX_FMT_BGR555LE] = {
233 .color_type = FF_COLOR_RGB,
236 [PIX_FMT_BGR444BE] = {
237 .color_type = FF_COLOR_RGB,
240 [PIX_FMT_BGR444LE] = {
241 .color_type = FF_COLOR_RGB,
245 .color_type = FF_COLOR_RGB,
248 .color_type = FF_COLOR_RGB,
250 [PIX_FMT_RGB4_BYTE] = {
251 .color_type = FF_COLOR_RGB,
255 .color_type = FF_COLOR_RGB,
258 .color_type = FF_COLOR_RGB,
260 [PIX_FMT_BGR4_BYTE] = {
261 .color_type = FF_COLOR_RGB,
265 .color_type = FF_COLOR_YUV,
268 .color_type = FF_COLOR_YUV,
273 .color_type = FF_COLOR_RGB,
277 .color_type = FF_COLOR_RGB,
281 void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
283 *h_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
284 *v_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
287 #if FF_API_GET_PIX_FMT_NAME
288 const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
290 return av_get_pix_fmt_name(pix_fmt);
294 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
296 return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL;
299 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
300 enum PixelFormat pix_fmt, int width, int height)
304 if ((ret = av_image_check_size(width, height, 0, NULL)) < 0)
307 if ((ret = av_image_fill_linesizes(picture->linesize, pix_fmt, width)) < 0)
310 return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize);
313 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
314 unsigned char *dest, int dest_size)
316 int i, j, nb_planes = 0, linesizes[4];
317 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
318 int size = avpicture_get_size(pix_fmt, width, height);
320 if (size > dest_size || size < 0)
321 return AVERROR(EINVAL);
323 for (i = 0; i < desc->nb_components; i++)
324 nb_planes = FFMAX(desc->comp[i].plane, nb_planes);
327 av_image_fill_linesizes(linesizes, pix_fmt, width);
328 for (i = 0; i < nb_planes; i++) {
329 int h, shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
330 const unsigned char *s = src->data[i];
331 h = (height + (1 << shift) - 1) >> shift;
333 for (j = 0; j < h; j++) {
334 memcpy(dest, s, linesizes[i]);
335 dest += linesizes[i];
336 s += src->linesize[i];
340 if (desc->flags & PIX_FMT_PAL)
341 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
346 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
348 AVPicture dummy_pict;
349 if(av_image_check_size(width, height, 0, NULL))
354 case PIX_FMT_RGB4_BYTE:
355 case PIX_FMT_BGR4_BYTE:
357 // do not include palette for these pseudo-paletted formats
358 return width * height;
360 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
363 static int get_pix_fmt_depth(int *min, int *max, enum PixelFormat pix_fmt)
365 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
368 if (!desc->nb_components) {
370 return AVERROR(EINVAL);
373 *min = INT_MAX, *max = -INT_MAX;
374 for (i = 0; i < desc->nb_components; i++) {
375 *min = FFMIN(desc->comp[i].depth_minus1+1, *min);
376 *max = FFMAX(desc->comp[i].depth_minus1+1, *max);
381 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
384 const PixFmtInfo *pf, *ps;
385 const AVPixFmtDescriptor *src_desc;
386 const AVPixFmtDescriptor *dst_desc;
387 int src_min_depth, src_max_depth, dst_min_depth, dst_max_depth;
390 if (dst_pix_fmt >= PIX_FMT_NB || dst_pix_fmt <= PIX_FMT_NONE)
393 src_desc = &av_pix_fmt_descriptors[src_pix_fmt];
394 dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt];
395 ps = &pix_fmt_info[src_pix_fmt];
400 if ((ret = get_pix_fmt_depth(&src_min_depth, &src_max_depth, src_pix_fmt)) < 0)
402 if ((ret = get_pix_fmt_depth(&dst_min_depth, &dst_max_depth, dst_pix_fmt)) < 0)
404 if (dst_min_depth < src_min_depth ||
405 dst_max_depth < src_max_depth)
406 loss |= FF_LOSS_DEPTH;
407 if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
408 dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
409 loss |= FF_LOSS_RESOLUTION;
411 pf = &pix_fmt_info[dst_pix_fmt];
412 switch(pf->color_type) {
414 if (ps->color_type != FF_COLOR_RGB &&
415 ps->color_type != FF_COLOR_GRAY)
416 loss |= FF_LOSS_COLORSPACE;
419 if (ps->color_type != FF_COLOR_GRAY)
420 loss |= FF_LOSS_COLORSPACE;
423 if (ps->color_type != FF_COLOR_YUV)
424 loss |= FF_LOSS_COLORSPACE;
426 case FF_COLOR_YUV_JPEG:
427 if (ps->color_type != FF_COLOR_YUV_JPEG &&
428 ps->color_type != FF_COLOR_YUV &&
429 ps->color_type != FF_COLOR_GRAY)
430 loss |= FF_LOSS_COLORSPACE;
434 if (ps->color_type != pf->color_type)
435 loss |= FF_LOSS_COLORSPACE;
438 if (pf->color_type == FF_COLOR_GRAY &&
439 ps->color_type != FF_COLOR_GRAY)
440 loss |= FF_LOSS_CHROMA;
441 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
442 loss |= FF_LOSS_ALPHA;
443 if (dst_pix_fmt == PIX_FMT_PAL8 &&
444 (src_pix_fmt != PIX_FMT_PAL8 && ps->color_type != FF_COLOR_GRAY))
445 loss |= FF_LOSS_COLORQUANT;
449 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
451 const PixFmtInfo *info = &pix_fmt_info[pix_fmt];
452 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
454 return info->padded_size ?
455 info->padded_size : av_get_bits_per_pixel(desc);
458 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
459 int has_alpha, int *loss_ptr)
461 enum PixelFormat dst_pix_fmt;
464 if (loss_ptr) /* all losses count (for backward compatibility) */
467 dst_pix_fmt = PIX_FMT_NONE; /* so first iteration doesn't have to be treated special */
468 for(i = 0; i< FFMIN(PIX_FMT_NB, 64); i++){
469 if (pix_fmt_mask & (1ULL << i))
470 dst_pix_fmt = avcodec_find_best_pix_fmt2(dst_pix_fmt, i, src_pix_fmt, has_alpha, loss_ptr);
475 enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
476 enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
478 enum PixelFormat dst_pix_fmt;
479 int loss1, loss2, loss_order1, loss_order2, i, loss_mask;
480 static const int loss_mask_order[] = {
481 ~0, /* no loss first */
484 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
487 ~(FF_LOSS_RESOLUTION | FF_LOSS_DEPTH | FF_LOSS_COLORSPACE | FF_LOSS_ALPHA |
488 FF_LOSS_COLORQUANT | FF_LOSS_CHROMA),
489 0x80000, //non zero entry that combines all loss variants including future additions
493 loss_mask= loss_ptr?~*loss_ptr:~0; /* use loss mask if provided */
494 dst_pix_fmt = PIX_FMT_NONE;
495 loss1 = avcodec_get_pix_fmt_loss(dst_pix_fmt1, src_pix_fmt, has_alpha) & loss_mask;
496 loss2 = avcodec_get_pix_fmt_loss(dst_pix_fmt2, src_pix_fmt, has_alpha) & loss_mask;
498 /* try with successive loss */
499 for(i = 0;loss_mask_order[i] != 0 && dst_pix_fmt == PIX_FMT_NONE;i++) {
500 loss_order1 = loss1 & loss_mask_order[i];
501 loss_order2 = loss2 & loss_mask_order[i];
503 if (loss_order1 == 0 && loss_order2 == 0){ /* use format with smallest depth */
504 dst_pix_fmt = avg_bits_per_pixel(dst_pix_fmt2) < avg_bits_per_pixel(dst_pix_fmt1) ? dst_pix_fmt2 : dst_pix_fmt1;
505 } else if (loss_order1 == 0 || loss_order2 == 0) { /* use format with no loss */
506 dst_pix_fmt = loss_order2 ? dst_pix_fmt1 : dst_pix_fmt2;
511 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
515 void av_picture_copy(AVPicture *dst, const AVPicture *src,
516 enum PixelFormat pix_fmt, int width, int height)
518 av_image_copy(dst->data, dst->linesize, src->data,
519 src->linesize, pix_fmt, width, height);
523 void ff_shrink22(uint8_t *dst, int dst_wrap,
524 const uint8_t *src, int src_wrap,
525 int width, int height)
528 const uint8_t *s1, *s2;
531 for(;height > 0; height--) {
535 for(w = width;w >= 4; w-=4) {
536 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
537 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
538 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
539 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
545 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
556 void ff_shrink44(uint8_t *dst, int dst_wrap,
557 const uint8_t *src, int src_wrap,
558 int width, int height)
561 const uint8_t *s1, *s2, *s3, *s4;
564 for(;height > 0; height--) {
570 for(w = width;w > 0; w--) {
571 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
572 s2[0] + s2[1] + s2[2] + s2[3] +
573 s3[0] + s3[1] + s3[2] + s3[3] +
574 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
587 void ff_shrink88(uint8_t *dst, int dst_wrap,
588 const uint8_t *src, int src_wrap,
589 int width, int height)
593 for(;height > 0; height--) {
594 for(w = width;w > 0; w--) {
597 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
600 *(dst++) = (tmp + 32)>>6;
601 src += 8 - 8*src_wrap;
603 src += 8*src_wrap - 8*width;
604 dst += dst_wrap - width;
609 int avpicture_alloc(AVPicture *picture,
610 enum PixelFormat pix_fmt, int width, int height)
614 if ((ret = av_image_alloc(picture->data, picture->linesize, width, height, pix_fmt, 1)) < 0) {
615 memset(picture, 0, sizeof(AVPicture));
622 void avpicture_free(AVPicture *picture)
624 av_free(picture->data[0]);
627 /* return true if yuv planar */
628 static inline int is_yuv_planar(enum PixelFormat fmt)
630 const PixFmtInfo *info = &pix_fmt_info[fmt];
631 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[fmt];
633 int planes[4] = { 0 };
635 if (info->color_type != FF_COLOR_YUV &&
636 info->color_type != FF_COLOR_YUV_JPEG)
639 /* set the used planes */
640 for (i = 0; i < desc->nb_components; i++)
641 planes[desc->comp[i].plane] = 1;
643 /* if there is an unused plane, the format is not planar */
644 for (i = 0; i < desc->nb_components; i++)
650 int av_picture_crop(AVPicture *dst, const AVPicture *src,
651 enum PixelFormat pix_fmt, int top_band, int left_band)
656 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
659 y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
660 x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
662 if (is_yuv_planar(pix_fmt)) {
663 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
664 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
665 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
667 if(top_band % (1<<y_shift) || left_band % (1<<x_shift))
669 if(left_band) //FIXME add support for this too
671 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
674 dst->linesize[0] = src->linesize[0];
675 dst->linesize[1] = src->linesize[1];
676 dst->linesize[2] = src->linesize[2];
680 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
681 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
690 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
691 !is_yuv_planar(pix_fmt)) return -1;
693 for (i = 0; i < 3; i++) {
694 x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0;
695 y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0;
697 if (padtop || padleft) {
698 memset(dst->data[i], color[i],
699 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
702 if (padleft || padright) {
703 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
704 (dst->linesize[i] - (padright >> x_shift));
705 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
706 for (y = 0; y < yheight; y++) {
707 memset(optr, color[i], (padleft + padright) >> x_shift);
708 optr += dst->linesize[i];
712 if (src) { /* first line */
713 uint8_t *iptr = src->data[i];
714 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
715 (padleft >> x_shift);
716 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
717 iptr += src->linesize[i];
718 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
719 (dst->linesize[i] - (padright >> x_shift));
720 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
721 for (y = 0; y < yheight; y++) {
722 memset(optr, color[i], (padleft + padright) >> x_shift);
723 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
724 (width - padleft - padright) >> x_shift);
725 iptr += src->linesize[i];
726 optr += dst->linesize[i];
730 if (padbottom || padright) {
731 optr = dst->data[i] + dst->linesize[i] *
732 ((height - padbottom) >> y_shift) - (padright >> x_shift);
733 memset(optr, color[i],dst->linesize[i] *
734 (padbottom >> y_shift) + (padright >> x_shift));
740 /* NOTE: we scan all the pixels to have an exact information */
741 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
743 const unsigned char *p;
744 int src_wrap, ret, x, y;
746 uint32_t *palette = (uint32_t *)src->data[1];
749 src_wrap = src->linesize[0] - width;
751 for(y=0;y<height;y++) {
752 for(x=0;x<width;x++) {
753 a = palette[p[0]] >> 24;
755 ret |= FF_ALPHA_TRANSP;
756 } else if (a != 0xff) {
757 ret |= FF_ALPHA_SEMI_TRANSP;
766 int img_get_alpha_info(const AVPicture *src,
767 enum PixelFormat pix_fmt, int width, int height)
769 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
772 /* no alpha can be represented in format */
777 ret = get_alpha_info_pal8(src, width, height);
780 /* we do not know, so everything is indicated */
781 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
787 #if !(HAVE_MMX && HAVE_YASM)
788 /* filter parameters: [-1 4 2 4 -1] // 8 */
789 static void deinterlace_line_c(uint8_t *dst,
790 const uint8_t *lum_m4, const uint8_t *lum_m3,
791 const uint8_t *lum_m2, const uint8_t *lum_m1,
795 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
798 for(;size > 0;size--) {
800 sum += lum_m3[0] << 2;
801 sum += lum_m2[0] << 1;
802 sum += lum_m1[0] << 2;
804 dst[0] = cm[(sum + 4) >> 3];
814 static void deinterlace_line_inplace_c(uint8_t *lum_m4, uint8_t *lum_m3,
815 uint8_t *lum_m2, uint8_t *lum_m1,
816 uint8_t *lum, int size)
818 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
821 for(;size > 0;size--) {
823 sum += lum_m3[0] << 2;
824 sum += lum_m2[0] << 1;
826 sum += lum_m1[0] << 2;
828 lum_m2[0] = cm[(sum + 4) >> 3];
838 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
839 top field is copied as is, but the bottom field is deinterlaced
840 against the top field. */
841 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
842 const uint8_t *src1, int src_wrap,
843 int width, int height)
845 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
850 src_0=&src_m1[src_wrap];
851 src_p1=&src_0[src_wrap];
852 src_p2=&src_p1[src_wrap];
853 for(y=0;y<(height-2);y+=2) {
854 memcpy(dst,src_m1,width);
856 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
860 src_p1 += 2*src_wrap;
861 src_p2 += 2*src_wrap;
864 memcpy(dst,src_m1,width);
867 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
870 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
871 int width, int height)
873 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
876 buf = (uint8_t*)av_malloc(width);
879 memcpy(buf,src_m1,width);
880 src_0=&src_m1[src_wrap];
881 src_p1=&src_0[src_wrap];
882 src_p2=&src_p1[src_wrap];
883 for(y=0;y<(height-2);y+=2) {
884 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
887 src_p1 += 2*src_wrap;
888 src_p2 += 2*src_wrap;
891 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
895 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
896 enum PixelFormat pix_fmt, int width, int height)
900 if (pix_fmt != PIX_FMT_YUV420P &&
901 pix_fmt != PIX_FMT_YUVJ420P &&
902 pix_fmt != PIX_FMT_YUV422P &&
903 pix_fmt != PIX_FMT_YUVJ422P &&
904 pix_fmt != PIX_FMT_YUV444P &&
905 pix_fmt != PIX_FMT_YUV411P &&
906 pix_fmt != PIX_FMT_GRAY8)
908 if ((width & 3) != 0 || (height & 3) != 0)
914 case PIX_FMT_YUVJ420P:
915 case PIX_FMT_YUV420P:
919 case PIX_FMT_YUV422P:
920 case PIX_FMT_YUVJ422P:
923 case PIX_FMT_YUV411P:
929 if (pix_fmt == PIX_FMT_GRAY8) {
934 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
937 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
938 src->data[i], src->linesize[i],