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] = {
113 .color_type = FF_COLOR_YUV,
117 [PIX_FMT_YUVJ420P] = {
118 .color_type = FF_COLOR_YUV_JPEG,
120 [PIX_FMT_YUVJ422P] = {
121 .color_type = FF_COLOR_YUV_JPEG,
123 [PIX_FMT_YUVJ444P] = {
124 .color_type = FF_COLOR_YUV_JPEG,
126 [PIX_FMT_YUVJ440P] = {
127 .color_type = FF_COLOR_YUV_JPEG,
132 .color_type = FF_COLOR_RGB,
135 .color_type = FF_COLOR_RGB,
139 .color_type = FF_COLOR_RGB,
141 [PIX_FMT_RGB48BE] = {
142 .color_type = FF_COLOR_RGB,
144 [PIX_FMT_RGB48LE] = {
145 .color_type = FF_COLOR_RGB,
147 [PIX_FMT_RGBA64BE] = {
149 .color_type = FF_COLOR_RGB,
151 [PIX_FMT_RGBA64LE] = {
153 .color_type = FF_COLOR_RGB,
155 [PIX_FMT_RGB565BE] = {
156 .color_type = FF_COLOR_RGB,
158 [PIX_FMT_RGB565LE] = {
159 .color_type = FF_COLOR_RGB,
161 [PIX_FMT_RGB555BE] = {
162 .color_type = FF_COLOR_RGB,
165 [PIX_FMT_RGB555LE] = {
166 .color_type = FF_COLOR_RGB,
169 [PIX_FMT_RGB444BE] = {
170 .color_type = FF_COLOR_RGB,
173 [PIX_FMT_RGB444LE] = {
174 .color_type = FF_COLOR_RGB,
178 /* gray / mono formats */
179 [PIX_FMT_GRAY16BE] = {
180 .color_type = FF_COLOR_GRAY,
182 [PIX_FMT_GRAY16LE] = {
183 .color_type = FF_COLOR_GRAY,
186 .color_type = FF_COLOR_GRAY,
190 .color_type = FF_COLOR_GRAY,
192 [PIX_FMT_MONOWHITE] = {
193 .color_type = FF_COLOR_GRAY,
195 [PIX_FMT_MONOBLACK] = {
196 .color_type = FF_COLOR_GRAY,
199 /* paletted formats */
202 .color_type = FF_COLOR_RGB,
204 [PIX_FMT_UYYVYY411] = {
205 .color_type = FF_COLOR_YUV,
209 .color_type = FF_COLOR_RGB,
211 [PIX_FMT_BGR48BE] = {
212 .color_type = FF_COLOR_RGB,
214 [PIX_FMT_BGR48LE] = {
215 .color_type = FF_COLOR_RGB,
217 [PIX_FMT_BGRA64BE] = {
219 .color_type = FF_COLOR_RGB,
221 [PIX_FMT_BGRA64LE] = {
223 .color_type = FF_COLOR_RGB,
225 [PIX_FMT_BGR565BE] = {
226 .color_type = FF_COLOR_RGB,
229 [PIX_FMT_BGR565LE] = {
230 .color_type = FF_COLOR_RGB,
233 [PIX_FMT_BGR555BE] = {
234 .color_type = FF_COLOR_RGB,
237 [PIX_FMT_BGR555LE] = {
238 .color_type = FF_COLOR_RGB,
241 [PIX_FMT_BGR444BE] = {
242 .color_type = FF_COLOR_RGB,
245 [PIX_FMT_BGR444LE] = {
246 .color_type = FF_COLOR_RGB,
250 .color_type = FF_COLOR_RGB,
253 .color_type = FF_COLOR_RGB,
255 [PIX_FMT_RGB4_BYTE] = {
256 .color_type = FF_COLOR_RGB,
260 .color_type = FF_COLOR_RGB,
263 .color_type = FF_COLOR_RGB,
265 [PIX_FMT_BGR4_BYTE] = {
266 .color_type = FF_COLOR_RGB,
270 .color_type = FF_COLOR_YUV,
273 .color_type = FF_COLOR_YUV,
278 .color_type = FF_COLOR_RGB,
282 .color_type = FF_COLOR_RGB,
286 void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
288 *h_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
289 *v_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
292 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
294 return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL;
297 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
298 enum PixelFormat pix_fmt, int width, int height)
302 if ((ret = av_image_check_size(width, height, 0, NULL)) < 0)
305 if ((ret = av_image_fill_linesizes(picture->linesize, pix_fmt, width)) < 0)
308 return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize);
311 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
312 unsigned char *dest, int dest_size)
314 int i, j, nb_planes = 0, linesizes[4];
315 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
316 int size = avpicture_get_size(pix_fmt, width, height);
318 if (size > dest_size || size < 0)
319 return AVERROR(EINVAL);
321 for (i = 0; i < desc->nb_components; i++)
322 nb_planes = FFMAX(desc->comp[i].plane, nb_planes);
325 av_image_fill_linesizes(linesizes, pix_fmt, width);
326 for (i = 0; i < nb_planes; i++) {
327 int h, shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
328 const unsigned char *s = src->data[i];
329 h = (height + (1 << shift) - 1) >> shift;
331 for (j = 0; j < h; j++) {
332 memcpy(dest, s, linesizes[i]);
333 dest += linesizes[i];
334 s += src->linesize[i];
341 case PIX_FMT_RGB4_BYTE:
342 case PIX_FMT_BGR4_BYTE:
344 // do not include palette for these pseudo-paletted formats
348 if (desc->flags & PIX_FMT_PAL)
349 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
354 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
356 AVPicture dummy_pict;
357 if(av_image_check_size(width, height, 0, NULL))
362 case PIX_FMT_RGB4_BYTE:
363 case PIX_FMT_BGR4_BYTE:
365 // do not include palette for these pseudo-paletted formats
366 return width * height;
368 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
371 static int get_pix_fmt_depth(int *min, int *max, enum PixelFormat pix_fmt)
373 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
376 if (!desc->nb_components) {
378 return AVERROR(EINVAL);
381 *min = INT_MAX, *max = -INT_MAX;
382 for (i = 0; i < desc->nb_components; i++) {
383 *min = FFMIN(desc->comp[i].depth_minus1+1, *min);
384 *max = FFMAX(desc->comp[i].depth_minus1+1, *max);
389 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
392 const PixFmtInfo *pf, *ps;
393 const AVPixFmtDescriptor *src_desc;
394 const AVPixFmtDescriptor *dst_desc;
395 int src_min_depth, src_max_depth, dst_min_depth, dst_max_depth;
398 if (dst_pix_fmt >= PIX_FMT_NB || dst_pix_fmt <= PIX_FMT_NONE)
401 src_desc = &av_pix_fmt_descriptors[src_pix_fmt];
402 dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt];
403 ps = &pix_fmt_info[src_pix_fmt];
408 if ((ret = get_pix_fmt_depth(&src_min_depth, &src_max_depth, src_pix_fmt)) < 0)
410 if ((ret = get_pix_fmt_depth(&dst_min_depth, &dst_max_depth, dst_pix_fmt)) < 0)
412 if (dst_min_depth < src_min_depth ||
413 dst_max_depth < src_max_depth)
414 loss |= FF_LOSS_DEPTH;
415 if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
416 dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
417 loss |= FF_LOSS_RESOLUTION;
419 pf = &pix_fmt_info[dst_pix_fmt];
420 switch(pf->color_type) {
422 if (ps->color_type != FF_COLOR_RGB &&
423 ps->color_type != FF_COLOR_GRAY)
424 loss |= FF_LOSS_COLORSPACE;
427 if (ps->color_type != FF_COLOR_GRAY)
428 loss |= FF_LOSS_COLORSPACE;
431 if (ps->color_type != FF_COLOR_YUV)
432 loss |= FF_LOSS_COLORSPACE;
434 case FF_COLOR_YUV_JPEG:
435 if (ps->color_type != FF_COLOR_YUV_JPEG &&
436 ps->color_type != FF_COLOR_YUV &&
437 ps->color_type != FF_COLOR_GRAY)
438 loss |= FF_LOSS_COLORSPACE;
442 if (ps->color_type != pf->color_type)
443 loss |= FF_LOSS_COLORSPACE;
446 if (pf->color_type == FF_COLOR_GRAY &&
447 ps->color_type != FF_COLOR_GRAY)
448 loss |= FF_LOSS_CHROMA;
449 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
450 loss |= FF_LOSS_ALPHA;
451 if (dst_pix_fmt == PIX_FMT_PAL8 &&
452 (src_pix_fmt != PIX_FMT_PAL8 && (ps->color_type != FF_COLOR_GRAY || (ps->is_alpha && has_alpha))))
453 loss |= FF_LOSS_COLORQUANT;
458 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
460 const PixFmtInfo *info = &pix_fmt_info[pix_fmt];
461 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
463 return info->padded_size ?
464 info->padded_size : av_get_bits_per_pixel(desc);
467 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
468 int has_alpha, int *loss_ptr)
470 enum PixelFormat dst_pix_fmt;
473 if (loss_ptr) /* all losses count (for backward compatibility) */
476 dst_pix_fmt = PIX_FMT_NONE; /* so first iteration doesn't have to be treated special */
477 for(i = 0; i< FFMIN(PIX_FMT_NB, 64); i++){
478 if (pix_fmt_mask & (1ULL << i))
479 dst_pix_fmt = avcodec_find_best_pix_fmt2(dst_pix_fmt, i, src_pix_fmt, has_alpha, loss_ptr);
484 enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
485 enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
487 enum PixelFormat dst_pix_fmt;
488 int loss1, loss2, loss_order1, loss_order2, i, loss_mask;
489 static const int loss_mask_order[] = {
490 ~0, /* no loss first */
493 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
496 ~(FF_LOSS_RESOLUTION | FF_LOSS_DEPTH | FF_LOSS_COLORSPACE | FF_LOSS_ALPHA |
497 FF_LOSS_COLORQUANT | FF_LOSS_CHROMA),
498 0x80000, //non zero entry that combines all loss variants including future additions
502 loss_mask= loss_ptr?~*loss_ptr:~0; /* use loss mask if provided */
503 dst_pix_fmt = PIX_FMT_NONE;
504 loss1 = avcodec_get_pix_fmt_loss(dst_pix_fmt1, src_pix_fmt, has_alpha) & loss_mask;
505 loss2 = avcodec_get_pix_fmt_loss(dst_pix_fmt2, src_pix_fmt, has_alpha) & loss_mask;
507 /* try with successive loss */
508 for(i = 0;loss_mask_order[i] != 0 && dst_pix_fmt == PIX_FMT_NONE;i++) {
509 loss_order1 = loss1 & loss_mask_order[i];
510 loss_order2 = loss2 & loss_mask_order[i];
512 if (loss_order1 == 0 && loss_order2 == 0){ /* use format with smallest depth */
513 dst_pix_fmt = avg_bits_per_pixel(dst_pix_fmt2) < avg_bits_per_pixel(dst_pix_fmt1) ? dst_pix_fmt2 : dst_pix_fmt1;
514 } else if (loss_order1 == 0 || loss_order2 == 0) { /* use format with no loss */
515 dst_pix_fmt = loss_order2 ? dst_pix_fmt1 : dst_pix_fmt2;
520 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
524 void av_picture_copy(AVPicture *dst, const AVPicture *src,
525 enum PixelFormat pix_fmt, int width, int height)
527 av_image_copy(dst->data, dst->linesize, src->data,
528 src->linesize, pix_fmt, width, height);
532 void ff_shrink22(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;
540 for(;height > 0; height--) {
544 for(w = width;w >= 4; w-=4) {
545 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
546 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
547 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
548 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
554 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
565 void ff_shrink44(uint8_t *dst, int dst_wrap,
566 const uint8_t *src, int src_wrap,
567 int width, int height)
570 const uint8_t *s1, *s2, *s3, *s4;
573 for(;height > 0; height--) {
579 for(w = width;w > 0; w--) {
580 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
581 s2[0] + s2[1] + s2[2] + s2[3] +
582 s3[0] + s3[1] + s3[2] + s3[3] +
583 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
596 void ff_shrink88(uint8_t *dst, int dst_wrap,
597 const uint8_t *src, int src_wrap,
598 int width, int height)
602 for(;height > 0; height--) {
603 for(w = width;w > 0; w--) {
606 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
609 *(dst++) = (tmp + 32)>>6;
610 src += 8 - 8*src_wrap;
612 src += 8*src_wrap - 8*width;
613 dst += dst_wrap - width;
618 int avpicture_alloc(AVPicture *picture,
619 enum PixelFormat pix_fmt, int width, int height)
623 if ((ret = av_image_alloc(picture->data, picture->linesize, width, height, pix_fmt, 1)) < 0) {
624 memset(picture, 0, sizeof(AVPicture));
631 void avpicture_free(AVPicture *picture)
633 av_free(picture->data[0]);
636 /* return true if yuv planar */
637 static inline int is_yuv_planar(enum PixelFormat fmt)
639 const PixFmtInfo *info = &pix_fmt_info[fmt];
640 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[fmt];
642 int planes[4] = { 0 };
644 if (info->color_type != FF_COLOR_YUV &&
645 info->color_type != FF_COLOR_YUV_JPEG)
648 /* set the used planes */
649 for (i = 0; i < desc->nb_components; i++)
650 planes[desc->comp[i].plane] = 1;
652 /* if there is an unused plane, the format is not planar */
653 for (i = 0; i < desc->nb_components; i++)
659 int av_picture_crop(AVPicture *dst, const AVPicture *src,
660 enum PixelFormat pix_fmt, int top_band, int left_band)
665 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
668 y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
669 x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
671 if (is_yuv_planar(pix_fmt)) {
672 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
673 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
674 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
676 if(top_band % (1<<y_shift) || left_band % (1<<x_shift))
678 if(left_band) //FIXME add support for this too
680 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
683 dst->linesize[0] = src->linesize[0];
684 dst->linesize[1] = src->linesize[1];
685 dst->linesize[2] = src->linesize[2];
689 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
690 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
699 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
700 !is_yuv_planar(pix_fmt)) return -1;
702 for (i = 0; i < 3; i++) {
703 x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0;
704 y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0;
706 if (padtop || padleft) {
707 memset(dst->data[i], color[i],
708 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
711 if (padleft || padright) {
712 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
713 (dst->linesize[i] - (padright >> x_shift));
714 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
715 for (y = 0; y < yheight; y++) {
716 memset(optr, color[i], (padleft + padright) >> x_shift);
717 optr += dst->linesize[i];
721 if (src) { /* first line */
722 uint8_t *iptr = src->data[i];
723 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
724 (padleft >> x_shift);
725 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
726 iptr += src->linesize[i];
727 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
728 (dst->linesize[i] - (padright >> x_shift));
729 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
730 for (y = 0; y < yheight; y++) {
731 memset(optr, color[i], (padleft + padright) >> x_shift);
732 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
733 (width - padleft - padright) >> x_shift);
734 iptr += src->linesize[i];
735 optr += dst->linesize[i];
739 if (padbottom || padright) {
740 optr = dst->data[i] + dst->linesize[i] *
741 ((height - padbottom) >> y_shift) - (padright >> x_shift);
742 memset(optr, color[i],dst->linesize[i] *
743 (padbottom >> y_shift) + (padright >> x_shift));
749 #if !(HAVE_MMX && HAVE_YASM)
750 /* filter parameters: [-1 4 2 4 -1] // 8 */
751 static void deinterlace_line_c(uint8_t *dst,
752 const uint8_t *lum_m4, const uint8_t *lum_m3,
753 const uint8_t *lum_m2, const uint8_t *lum_m1,
757 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
760 for(;size > 0;size--) {
762 sum += lum_m3[0] << 2;
763 sum += lum_m2[0] << 1;
764 sum += lum_m1[0] << 2;
766 dst[0] = cm[(sum + 4) >> 3];
776 static void deinterlace_line_inplace_c(uint8_t *lum_m4, uint8_t *lum_m3,
777 uint8_t *lum_m2, uint8_t *lum_m1,
778 uint8_t *lum, int size)
780 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
783 for(;size > 0;size--) {
785 sum += lum_m3[0] << 2;
786 sum += lum_m2[0] << 1;
788 sum += lum_m1[0] << 2;
790 lum_m2[0] = cm[(sum + 4) >> 3];
800 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
801 top field is copied as is, but the bottom field is deinterlaced
802 against the top field. */
803 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
804 const uint8_t *src1, int src_wrap,
805 int width, int height)
807 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
812 src_0=&src_m1[src_wrap];
813 src_p1=&src_0[src_wrap];
814 src_p2=&src_p1[src_wrap];
815 for(y=0;y<(height-2);y+=2) {
816 memcpy(dst,src_m1,width);
818 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
822 src_p1 += 2*src_wrap;
823 src_p2 += 2*src_wrap;
826 memcpy(dst,src_m1,width);
829 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
832 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
833 int width, int height)
835 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
838 buf = av_malloc(width);
841 memcpy(buf,src_m1,width);
842 src_0=&src_m1[src_wrap];
843 src_p1=&src_0[src_wrap];
844 src_p2=&src_p1[src_wrap];
845 for(y=0;y<(height-2);y+=2) {
846 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
849 src_p1 += 2*src_wrap;
850 src_p2 += 2*src_wrap;
853 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
857 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
858 enum PixelFormat pix_fmt, int width, int height)
862 if (pix_fmt != PIX_FMT_YUV420P &&
863 pix_fmt != PIX_FMT_YUVJ420P &&
864 pix_fmt != PIX_FMT_YUV422P &&
865 pix_fmt != PIX_FMT_YUVJ422P &&
866 pix_fmt != PIX_FMT_YUV444P &&
867 pix_fmt != PIX_FMT_YUV411P &&
868 pix_fmt != PIX_FMT_GRAY8)
870 if ((width & 3) != 0 || (height & 3) != 0)
876 case PIX_FMT_YUVJ420P:
877 case PIX_FMT_YUV420P:
881 case PIX_FMT_YUV422P:
882 case PIX_FMT_YUVJ422P:
885 case PIX_FMT_YUV411P:
891 if (pix_fmt == PIX_FMT_GRAY8) {
896 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
899 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
900 src->data[i], src->linesize[i],