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
23 * @file libavcodec/imgconvert.c
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
35 #include "colorspace.h"
37 #include "imgconvert.h"
38 #include "libavutil/pixdesc.h"
42 #include "x86/dsputil_mmx.h"
45 #define xglue(x, y) x ## y
46 #define glue(x, y) xglue(x, y)
48 #define FF_COLOR_RGB 0 /**< RGB color space */
49 #define FF_COLOR_GRAY 1 /**< gray color space */
50 #define FF_COLOR_YUV 2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
51 #define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
53 #define FF_PIXEL_PLANAR 0 /**< each channel has one component in AVPicture */
54 #define FF_PIXEL_PACKED 1 /**< only one components containing all the channels */
55 #define FF_PIXEL_PALETTE 2 /**< one components containing indexes for a palette */
57 typedef struct PixFmtInfo {
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 depth; /**< bit depth of the color components */
65 /* this table gives more information about formats */
66 static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
70 .color_type = FF_COLOR_YUV,
71 .pixel_type = FF_PIXEL_PLANAR,
76 .color_type = FF_COLOR_YUV,
77 .pixel_type = FF_PIXEL_PLANAR,
82 .color_type = FF_COLOR_YUV,
83 .pixel_type = FF_PIXEL_PLANAR,
88 .color_type = FF_COLOR_YUV,
89 .pixel_type = FF_PIXEL_PACKED,
94 .color_type = FF_COLOR_YUV,
95 .pixel_type = FF_PIXEL_PACKED,
100 .color_type = FF_COLOR_YUV,
101 .pixel_type = FF_PIXEL_PLANAR,
104 [PIX_FMT_YUV411P] = {
106 .color_type = FF_COLOR_YUV,
107 .pixel_type = FF_PIXEL_PLANAR,
110 [PIX_FMT_YUV440P] = {
112 .color_type = FF_COLOR_YUV,
113 .pixel_type = FF_PIXEL_PLANAR,
116 [PIX_FMT_YUV420P16LE] = {
118 .color_type = FF_COLOR_YUV,
119 .pixel_type = FF_PIXEL_PLANAR,
122 [PIX_FMT_YUV422P16LE] = {
124 .color_type = FF_COLOR_YUV,
125 .pixel_type = FF_PIXEL_PLANAR,
128 [PIX_FMT_YUV444P16LE] = {
130 .color_type = FF_COLOR_YUV,
131 .pixel_type = FF_PIXEL_PLANAR,
134 [PIX_FMT_YUV420P16BE] = {
136 .color_type = FF_COLOR_YUV,
137 .pixel_type = FF_PIXEL_PLANAR,
140 [PIX_FMT_YUV422P16BE] = {
142 .color_type = FF_COLOR_YUV,
143 .pixel_type = FF_PIXEL_PLANAR,
146 [PIX_FMT_YUV444P16BE] = {
148 .color_type = FF_COLOR_YUV,
149 .pixel_type = FF_PIXEL_PLANAR,
154 /* YUV formats with alpha plane */
155 [PIX_FMT_YUVA420P] = {
157 .color_type = FF_COLOR_YUV,
158 .pixel_type = FF_PIXEL_PLANAR,
163 [PIX_FMT_YUVJ420P] = {
165 .color_type = FF_COLOR_YUV_JPEG,
166 .pixel_type = FF_PIXEL_PLANAR,
169 [PIX_FMT_YUVJ422P] = {
171 .color_type = FF_COLOR_YUV_JPEG,
172 .pixel_type = FF_PIXEL_PLANAR,
175 [PIX_FMT_YUVJ444P] = {
177 .color_type = FF_COLOR_YUV_JPEG,
178 .pixel_type = FF_PIXEL_PLANAR,
181 [PIX_FMT_YUVJ440P] = {
183 .color_type = FF_COLOR_YUV_JPEG,
184 .pixel_type = FF_PIXEL_PLANAR,
191 .color_type = FF_COLOR_RGB,
192 .pixel_type = FF_PIXEL_PACKED,
197 .color_type = FF_COLOR_RGB,
198 .pixel_type = FF_PIXEL_PACKED,
202 .nb_channels = 4, .is_alpha = 1,
203 .color_type = FF_COLOR_RGB,
204 .pixel_type = FF_PIXEL_PACKED,
207 [PIX_FMT_RGB48BE] = {
209 .color_type = FF_COLOR_RGB,
210 .pixel_type = FF_PIXEL_PACKED,
213 [PIX_FMT_RGB48LE] = {
215 .color_type = FF_COLOR_RGB,
216 .pixel_type = FF_PIXEL_PACKED,
219 [PIX_FMT_RGB565BE] = {
221 .color_type = FF_COLOR_RGB,
222 .pixel_type = FF_PIXEL_PACKED,
225 [PIX_FMT_RGB565LE] = {
227 .color_type = FF_COLOR_RGB,
228 .pixel_type = FF_PIXEL_PACKED,
231 [PIX_FMT_RGB555BE] = {
233 .color_type = FF_COLOR_RGB,
234 .pixel_type = FF_PIXEL_PACKED,
237 [PIX_FMT_RGB555LE] = {
239 .color_type = FF_COLOR_RGB,
240 .pixel_type = FF_PIXEL_PACKED,
243 [PIX_FMT_RGB444BE] = {
245 .color_type = FF_COLOR_RGB,
246 .pixel_type = FF_PIXEL_PACKED,
249 [PIX_FMT_RGB444LE] = {
251 .color_type = FF_COLOR_RGB,
252 .pixel_type = FF_PIXEL_PACKED,
256 /* gray / mono formats */
257 [PIX_FMT_GRAY16BE] = {
259 .color_type = FF_COLOR_GRAY,
260 .pixel_type = FF_PIXEL_PLANAR,
263 [PIX_FMT_GRAY16LE] = {
265 .color_type = FF_COLOR_GRAY,
266 .pixel_type = FF_PIXEL_PLANAR,
271 .color_type = FF_COLOR_GRAY,
272 .pixel_type = FF_PIXEL_PLANAR,
275 [PIX_FMT_MONOWHITE] = {
277 .color_type = FF_COLOR_GRAY,
278 .pixel_type = FF_PIXEL_PLANAR,
281 [PIX_FMT_MONOBLACK] = {
283 .color_type = FF_COLOR_GRAY,
284 .pixel_type = FF_PIXEL_PLANAR,
288 /* paletted formats */
290 .nb_channels = 4, .is_alpha = 1,
291 .color_type = FF_COLOR_RGB,
292 .pixel_type = FF_PIXEL_PALETTE,
295 [PIX_FMT_UYYVYY411] = {
297 .color_type = FF_COLOR_YUV,
298 .pixel_type = FF_PIXEL_PACKED,
302 .nb_channels = 4, .is_alpha = 1,
303 .color_type = FF_COLOR_RGB,
304 .pixel_type = FF_PIXEL_PACKED,
307 [PIX_FMT_BGR565BE] = {
309 .color_type = FF_COLOR_RGB,
310 .pixel_type = FF_PIXEL_PACKED,
313 [PIX_FMT_BGR565LE] = {
315 .color_type = FF_COLOR_RGB,
316 .pixel_type = FF_PIXEL_PACKED,
319 [PIX_FMT_BGR555BE] = {
321 .color_type = FF_COLOR_RGB,
322 .pixel_type = FF_PIXEL_PACKED,
325 [PIX_FMT_BGR555LE] = {
327 .color_type = FF_COLOR_RGB,
328 .pixel_type = FF_PIXEL_PACKED,
331 [PIX_FMT_BGR444BE] = {
333 .color_type = FF_COLOR_RGB,
334 .pixel_type = FF_PIXEL_PACKED,
337 [PIX_FMT_BGR444LE] = {
339 .color_type = FF_COLOR_RGB,
340 .pixel_type = FF_PIXEL_PACKED,
345 .color_type = FF_COLOR_RGB,
346 .pixel_type = FF_PIXEL_PACKED,
351 .color_type = FF_COLOR_RGB,
352 .pixel_type = FF_PIXEL_PACKED,
355 [PIX_FMT_RGB4_BYTE] = {
357 .color_type = FF_COLOR_RGB,
358 .pixel_type = FF_PIXEL_PACKED,
363 .color_type = FF_COLOR_RGB,
364 .pixel_type = FF_PIXEL_PACKED,
369 .color_type = FF_COLOR_RGB,
370 .pixel_type = FF_PIXEL_PACKED,
373 [PIX_FMT_BGR4_BYTE] = {
375 .color_type = FF_COLOR_RGB,
376 .pixel_type = FF_PIXEL_PACKED,
381 .color_type = FF_COLOR_YUV,
382 .pixel_type = FF_PIXEL_PLANAR,
387 .color_type = FF_COLOR_YUV,
388 .pixel_type = FF_PIXEL_PLANAR,
393 .nb_channels = 4, .is_alpha = 1,
394 .color_type = FF_COLOR_RGB,
395 .pixel_type = FF_PIXEL_PACKED,
399 .nb_channels = 4, .is_alpha = 1,
400 .color_type = FF_COLOR_RGB,
401 .pixel_type = FF_PIXEL_PACKED,
406 void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
408 *h_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
409 *v_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
412 const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
414 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
417 return av_pix_fmt_descriptors[pix_fmt].name;
420 #if LIBAVCODEC_VERSION_MAJOR < 53
421 enum PixelFormat avcodec_get_pix_fmt(const char *name)
423 return av_get_pix_fmt(name);
427 void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
431 snprintf (buf, buf_size,
432 "name " " nb_channels" " depth" " is_alpha"
435 PixFmtInfo info= pix_fmt_info[pix_fmt];
437 char is_alpha_char= info.is_alpha ? 'y' : 'n';
439 snprintf (buf, buf_size,
441 av_pix_fmt_descriptors[pix_fmt].name,
449 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
451 return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL;
454 int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
457 for(i=0; i<256; i++){
471 case PIX_FMT_RGB4_BYTE:
476 case PIX_FMT_BGR4_BYTE:
487 pal[i] = b + (g<<8) + (r<<16);
493 int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
496 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
498 memset(picture->linesize, 0, sizeof(picture->linesize));
501 case PIX_FMT_YUV420P:
502 case PIX_FMT_YUV422P:
503 case PIX_FMT_YUV444P:
504 case PIX_FMT_YUV410P:
505 case PIX_FMT_YUV411P:
506 case PIX_FMT_YUV440P:
507 case PIX_FMT_YUVJ420P:
508 case PIX_FMT_YUVJ422P:
509 case PIX_FMT_YUVJ444P:
510 case PIX_FMT_YUVJ440P:
511 w2 = (width + (1 << desc->log2_chroma_w) - 1) >> desc->log2_chroma_w;
512 picture->linesize[0] = width;
513 picture->linesize[1] = w2;
514 picture->linesize[2] = w2;
516 case PIX_FMT_YUV420P16LE:
517 case PIX_FMT_YUV422P16LE:
518 case PIX_FMT_YUV444P16LE:
519 case PIX_FMT_YUV420P16BE:
520 case PIX_FMT_YUV422P16BE:
521 case PIX_FMT_YUV444P16BE:
522 w2 = (width + (1 << desc->log2_chroma_w) - 1) >> desc->log2_chroma_w;
523 picture->linesize[0] = 2*width;
524 picture->linesize[1] = 2*w2;
525 picture->linesize[2] = 2*w2;
527 case PIX_FMT_YUVA420P:
528 w2 = (width + (1 << desc->log2_chroma_w) - 1) >> desc->log2_chroma_w;
529 picture->linesize[0] = width;
530 picture->linesize[1] = w2;
531 picture->linesize[2] = w2;
532 picture->linesize[3] = width;
536 w2 = (width + (1 << desc->log2_chroma_w) - 1) >> desc->log2_chroma_w;
537 picture->linesize[0] = width;
538 picture->linesize[1] = 2 * w2;
542 picture->linesize[0] = width * 3;
548 picture->linesize[0] = width * 4;
550 case PIX_FMT_RGB48BE:
551 case PIX_FMT_RGB48LE:
552 picture->linesize[0] = width * 6;
554 case PIX_FMT_GRAY16BE:
555 case PIX_FMT_GRAY16LE:
556 case PIX_FMT_BGR444BE:
557 case PIX_FMT_BGR444LE:
558 case PIX_FMT_BGR555BE:
559 case PIX_FMT_BGR555LE:
560 case PIX_FMT_BGR565BE:
561 case PIX_FMT_BGR565LE:
562 case PIX_FMT_RGB444BE:
563 case PIX_FMT_RGB444LE:
564 case PIX_FMT_RGB555BE:
565 case PIX_FMT_RGB555LE:
566 case PIX_FMT_RGB565BE:
567 case PIX_FMT_RGB565LE:
568 case PIX_FMT_YUYV422:
569 picture->linesize[0] = width * 2;
571 case PIX_FMT_UYVY422:
572 picture->linesize[0] = width * 2;
574 case PIX_FMT_UYYVYY411:
575 picture->linesize[0] = width + width/2;
579 picture->linesize[0] = width / 2;
581 case PIX_FMT_MONOWHITE:
582 case PIX_FMT_MONOBLACK:
583 picture->linesize[0] = (width + 7) >> 3;
588 case PIX_FMT_RGB4_BYTE:
589 case PIX_FMT_BGR4_BYTE:
591 picture->linesize[0] = width;
599 int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
603 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
605 size = picture->linesize[0] * height;
607 case PIX_FMT_YUV420P:
608 case PIX_FMT_YUV422P:
609 case PIX_FMT_YUV444P:
610 case PIX_FMT_YUV410P:
611 case PIX_FMT_YUV411P:
612 case PIX_FMT_YUV440P:
613 case PIX_FMT_YUVJ420P:
614 case PIX_FMT_YUVJ422P:
615 case PIX_FMT_YUVJ444P:
616 case PIX_FMT_YUVJ440P:
617 case PIX_FMT_YUV420P16LE:
618 case PIX_FMT_YUV422P16LE:
619 case PIX_FMT_YUV444P16LE:
620 case PIX_FMT_YUV420P16BE:
621 case PIX_FMT_YUV422P16BE:
622 case PIX_FMT_YUV444P16BE:
623 h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
624 size2 = picture->linesize[1] * h2;
625 picture->data[0] = ptr;
626 picture->data[1] = picture->data[0] + size;
627 picture->data[2] = picture->data[1] + size2;
628 picture->data[3] = NULL;
629 return size + 2 * size2;
630 case PIX_FMT_YUVA420P:
631 h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
632 size2 = picture->linesize[1] * h2;
633 picture->data[0] = ptr;
634 picture->data[1] = picture->data[0] + size;
635 picture->data[2] = picture->data[1] + size2;
636 picture->data[3] = picture->data[1] + size2 + size2;
637 return 2 * size + 2 * size2;
640 h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
641 size2 = picture->linesize[1] * h2;
642 picture->data[0] = ptr;
643 picture->data[1] = picture->data[0] + size;
644 picture->data[2] = NULL;
645 picture->data[3] = NULL;
653 case PIX_FMT_RGB48BE:
654 case PIX_FMT_RGB48LE:
655 case PIX_FMT_GRAY16BE:
656 case PIX_FMT_GRAY16LE:
657 case PIX_FMT_BGR444BE:
658 case PIX_FMT_BGR444LE:
659 case PIX_FMT_BGR555BE:
660 case PIX_FMT_BGR555LE:
661 case PIX_FMT_BGR565BE:
662 case PIX_FMT_BGR565LE:
663 case PIX_FMT_RGB444BE:
664 case PIX_FMT_RGB444LE:
665 case PIX_FMT_RGB555BE:
666 case PIX_FMT_RGB555LE:
667 case PIX_FMT_RGB565BE:
668 case PIX_FMT_RGB565LE:
669 case PIX_FMT_YUYV422:
670 case PIX_FMT_UYVY422:
671 case PIX_FMT_UYYVYY411:
674 case PIX_FMT_MONOWHITE:
675 case PIX_FMT_MONOBLACK:
676 picture->data[0] = ptr;
677 picture->data[1] = NULL;
678 picture->data[2] = NULL;
679 picture->data[3] = NULL;
684 case PIX_FMT_RGB4_BYTE:
685 case PIX_FMT_BGR4_BYTE:
687 size2 = (size + 3) & ~3;
688 picture->data[0] = ptr;
689 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
690 picture->data[2] = NULL;
691 picture->data[3] = NULL;
692 return size2 + 256 * 4;
694 picture->data[0] = NULL;
695 picture->data[1] = NULL;
696 picture->data[2] = NULL;
697 picture->data[3] = NULL;
702 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
703 enum PixelFormat pix_fmt, int width, int height)
706 if(avcodec_check_dimensions(NULL, width, height))
709 if (ff_fill_linesize(picture, pix_fmt, width))
712 return ff_fill_pointer(picture, ptr, pix_fmt, height);
715 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
716 unsigned char *dest, int dest_size)
718 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
719 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
720 int i, j, w, ow, h, oh, data_planes;
721 const unsigned char* s;
722 int size = avpicture_get_size(pix_fmt, width, height);
724 if (size > dest_size || size < 0)
727 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
728 if (pix_fmt == PIX_FMT_YUYV422 ||
729 pix_fmt == PIX_FMT_UYVY422 ||
730 pix_fmt == PIX_FMT_BGR565BE ||
731 pix_fmt == PIX_FMT_BGR565LE ||
732 pix_fmt == PIX_FMT_BGR555BE ||
733 pix_fmt == PIX_FMT_BGR555LE ||
734 pix_fmt == PIX_FMT_BGR444BE ||
735 pix_fmt == PIX_FMT_BGR444LE ||
736 pix_fmt == PIX_FMT_RGB565BE ||
737 pix_fmt == PIX_FMT_RGB565LE ||
738 pix_fmt == PIX_FMT_RGB555BE ||
739 pix_fmt == PIX_FMT_RGB555LE ||
740 pix_fmt == PIX_FMT_RGB444BE ||
741 pix_fmt == PIX_FMT_RGB444LE)
743 else if (pix_fmt == PIX_FMT_UYYVYY411)
745 else if (pix_fmt == PIX_FMT_PAL8)
748 w = width * (pf->depth * pf->nb_channels / 8);
753 data_planes = pf->nb_channels;
754 w = (width*pf->depth + 7)/8;
761 for (i=0; i<data_planes; i++) {
763 w = (- ((-width) >> desc->log2_chroma_w) * pf->depth + 7) / 8;
764 h = -((-height) >> desc->log2_chroma_h);
765 if (pix_fmt == PIX_FMT_NV12 || pix_fmt == PIX_FMT_NV21)
775 s += src->linesize[i];
779 if (pf->pixel_type == FF_PIXEL_PALETTE)
780 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
785 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
787 AVPicture dummy_pict;
788 if(avcodec_check_dimensions(NULL, width, height))
793 case PIX_FMT_RGB4_BYTE:
794 case PIX_FMT_BGR4_BYTE:
796 // do not include palette for these pseudo-paletted formats
797 return width * height;
799 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
802 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
805 const PixFmtInfo *pf, *ps;
806 const AVPixFmtDescriptor *src_desc = &av_pix_fmt_descriptors[src_pix_fmt];
807 const AVPixFmtDescriptor *dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt];
810 ps = &pix_fmt_info[src_pix_fmt];
814 pf = &pix_fmt_info[dst_pix_fmt];
815 if (pf->depth < ps->depth ||
816 ((dst_pix_fmt == PIX_FMT_RGB555BE || dst_pix_fmt == PIX_FMT_RGB555LE ||
817 dst_pix_fmt == PIX_FMT_BGR555BE || dst_pix_fmt == PIX_FMT_BGR555LE) &&
818 (src_pix_fmt == PIX_FMT_RGB565BE || src_pix_fmt == PIX_FMT_RGB565LE ||
819 src_pix_fmt == PIX_FMT_BGR565BE || src_pix_fmt == PIX_FMT_BGR565LE)))
820 loss |= FF_LOSS_DEPTH;
821 if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
822 dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
823 loss |= FF_LOSS_RESOLUTION;
824 switch(pf->color_type) {
826 if (ps->color_type != FF_COLOR_RGB &&
827 ps->color_type != FF_COLOR_GRAY)
828 loss |= FF_LOSS_COLORSPACE;
831 if (ps->color_type != FF_COLOR_GRAY)
832 loss |= FF_LOSS_COLORSPACE;
835 if (ps->color_type != FF_COLOR_YUV)
836 loss |= FF_LOSS_COLORSPACE;
838 case FF_COLOR_YUV_JPEG:
839 if (ps->color_type != FF_COLOR_YUV_JPEG &&
840 ps->color_type != FF_COLOR_YUV &&
841 ps->color_type != FF_COLOR_GRAY)
842 loss |= FF_LOSS_COLORSPACE;
846 if (ps->color_type != pf->color_type)
847 loss |= FF_LOSS_COLORSPACE;
850 if (pf->color_type == FF_COLOR_GRAY &&
851 ps->color_type != FF_COLOR_GRAY)
852 loss |= FF_LOSS_CHROMA;
853 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
854 loss |= FF_LOSS_ALPHA;
855 if (pf->pixel_type == FF_PIXEL_PALETTE &&
856 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
857 loss |= FF_LOSS_COLORQUANT;
861 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
864 const PixFmtInfo *pf;
865 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
867 pf = &pix_fmt_info[pix_fmt];
868 switch(pf->pixel_type) {
869 case FF_PIXEL_PACKED:
871 case PIX_FMT_YUYV422:
872 case PIX_FMT_UYVY422:
873 case PIX_FMT_RGB565BE:
874 case PIX_FMT_RGB565LE:
875 case PIX_FMT_RGB555BE:
876 case PIX_FMT_RGB555LE:
877 case PIX_FMT_RGB444BE:
878 case PIX_FMT_RGB444LE:
879 case PIX_FMT_BGR565BE:
880 case PIX_FMT_BGR565LE:
881 case PIX_FMT_BGR555BE:
882 case PIX_FMT_BGR555LE:
883 case PIX_FMT_BGR444BE:
884 case PIX_FMT_BGR444LE:
887 case PIX_FMT_UYYVYY411:
891 bits = pf->depth * pf->nb_channels;
895 case FF_PIXEL_PLANAR:
896 if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) {
897 bits = pf->depth * pf->nb_channels;
899 bits = pf->depth + ((2 * pf->depth) >>
900 (desc->log2_chroma_w + desc->log2_chroma_h));
903 case FF_PIXEL_PALETTE:
913 static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
914 enum PixelFormat src_pix_fmt,
918 int dist, i, loss, min_dist;
919 enum PixelFormat dst_pix_fmt;
921 /* find exact color match with smallest size */
922 dst_pix_fmt = PIX_FMT_NONE;
923 min_dist = 0x7fffffff;
924 for(i = 0;i < PIX_FMT_NB; i++) {
925 if (pix_fmt_mask & (1ULL << i)) {
926 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
928 dist = avg_bits_per_pixel(i);
929 if (dist < min_dist) {
939 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
940 int has_alpha, int *loss_ptr)
942 enum PixelFormat dst_pix_fmt;
944 static const int loss_mask_order[] = {
945 ~0, /* no loss first */
948 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
954 /* try with successive loss */
957 loss_mask = loss_mask_order[i++];
958 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
959 has_alpha, loss_mask);
960 if (dst_pix_fmt >= 0)
968 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
972 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
973 const uint8_t *src, int src_wrap,
974 int width, int height)
978 for(;height > 0; height--) {
979 memcpy(dst, src, width);
985 int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
988 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
989 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
991 pf = &pix_fmt_info[pix_fmt];
992 switch(pf->pixel_type) {
993 case FF_PIXEL_PACKED:
995 case PIX_FMT_YUYV422:
996 case PIX_FMT_UYVY422:
997 case PIX_FMT_RGB565BE:
998 case PIX_FMT_RGB565LE:
999 case PIX_FMT_RGB555BE:
1000 case PIX_FMT_RGB555LE:
1001 case PIX_FMT_RGB444BE:
1002 case PIX_FMT_RGB444LE:
1003 case PIX_FMT_BGR565BE:
1004 case PIX_FMT_BGR565LE:
1005 case PIX_FMT_BGR555BE:
1006 case PIX_FMT_BGR555LE:
1007 case PIX_FMT_BGR444BE:
1008 case PIX_FMT_BGR444LE:
1011 case PIX_FMT_UYYVYY411:
1015 bits = pf->depth * pf->nb_channels;
1018 return (width * bits + 7) >> 3;
1020 case FF_PIXEL_PLANAR:
1021 if (plane == 1 || plane == 2)
1022 width= -((-width)>>desc->log2_chroma_w);
1024 return (width * pf->depth + 7) >> 3;
1026 case FF_PIXEL_PALETTE:
1035 void av_picture_copy(AVPicture *dst, const AVPicture *src,
1036 enum PixelFormat pix_fmt, int width, int height)
1039 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1040 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
1042 switch(pf->pixel_type) {
1043 case FF_PIXEL_PACKED:
1044 case FF_PIXEL_PLANAR:
1045 for(i = 0; i < pf->nb_channels; i++) {
1047 int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
1049 if (i == 1 || i == 2) {
1050 h= -((-height)>>desc->log2_chroma_h);
1052 ff_img_copy_plane(dst->data[i], dst->linesize[i],
1053 src->data[i], src->linesize[i],
1057 case FF_PIXEL_PALETTE:
1058 ff_img_copy_plane(dst->data[0], dst->linesize[0],
1059 src->data[0], src->linesize[0],
1061 /* copy the palette */
1062 memcpy(dst->data[1], src->data[1], 4*256);
1068 void ff_shrink22(uint8_t *dst, int dst_wrap,
1069 const uint8_t *src, int src_wrap,
1070 int width, int height)
1073 const uint8_t *s1, *s2;
1076 for(;height > 0; height--) {
1080 for(w = width;w >= 4; w-=4) {
1081 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1082 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1083 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1084 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1090 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1095 src += 2 * src_wrap;
1101 void ff_shrink44(uint8_t *dst, int dst_wrap,
1102 const uint8_t *src, int src_wrap,
1103 int width, int height)
1106 const uint8_t *s1, *s2, *s3, *s4;
1109 for(;height > 0; height--) {
1115 for(w = width;w > 0; w--) {
1116 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1117 s2[0] + s2[1] + s2[2] + s2[3] +
1118 s3[0] + s3[1] + s3[2] + s3[3] +
1119 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1126 src += 4 * src_wrap;
1132 void ff_shrink88(uint8_t *dst, int dst_wrap,
1133 const uint8_t *src, int src_wrap,
1134 int width, int height)
1138 for(;height > 0; height--) {
1139 for(w = width;w > 0; w--) {
1142 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1145 *(dst++) = (tmp + 32)>>6;
1146 src += 8 - 8*src_wrap;
1148 src += 8*src_wrap - 8*width;
1149 dst += dst_wrap - width;
1154 int avpicture_alloc(AVPicture *picture,
1155 enum PixelFormat pix_fmt, int width, int height)
1160 size = avpicture_fill(picture, NULL, pix_fmt, width, height);
1163 ptr = av_malloc(size);
1166 avpicture_fill(picture, ptr, pix_fmt, width, height);
1167 if(picture->data[1] && !picture->data[2])
1168 ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt);
1172 memset(picture, 0, sizeof(AVPicture));
1176 void avpicture_free(AVPicture *picture)
1178 av_free(picture->data[0]);
1181 /* return true if yuv planar */
1182 static inline int is_yuv_planar(const PixFmtInfo *ps)
1184 return (ps->color_type == FF_COLOR_YUV ||
1185 ps->color_type == FF_COLOR_YUV_JPEG) &&
1186 ps->pixel_type == FF_PIXEL_PLANAR;
1189 int av_picture_crop(AVPicture *dst, const AVPicture *src,
1190 enum PixelFormat pix_fmt, int top_band, int left_band)
1195 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
1198 y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
1199 x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
1201 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
1202 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
1203 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
1205 dst->linesize[0] = src->linesize[0];
1206 dst->linesize[1] = src->linesize[1];
1207 dst->linesize[2] = src->linesize[2];
1211 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
1212 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
1221 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
1222 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
1224 for (i = 0; i < 3; i++) {
1225 x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0;
1226 y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0;
1228 if (padtop || padleft) {
1229 memset(dst->data[i], color[i],
1230 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
1233 if (padleft || padright) {
1234 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1235 (dst->linesize[i] - (padright >> x_shift));
1236 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1237 for (y = 0; y < yheight; y++) {
1238 memset(optr, color[i], (padleft + padright) >> x_shift);
1239 optr += dst->linesize[i];
1243 if (src) { /* first line */
1244 uint8_t *iptr = src->data[i];
1245 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1246 (padleft >> x_shift);
1247 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
1248 iptr += src->linesize[i];
1249 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1250 (dst->linesize[i] - (padright >> x_shift));
1251 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1252 for (y = 0; y < yheight; y++) {
1253 memset(optr, color[i], (padleft + padright) >> x_shift);
1254 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
1255 (width - padleft - padright) >> x_shift);
1256 iptr += src->linesize[i];
1257 optr += dst->linesize[i];
1261 if (padbottom || padright) {
1262 optr = dst->data[i] + dst->linesize[i] *
1263 ((height - padbottom) >> y_shift) - (padright >> x_shift);
1264 memset(optr, color[i],dst->linesize[i] *
1265 (padbottom >> y_shift) + (padright >> x_shift));
1271 /* NOTE: we scan all the pixels to have an exact information */
1272 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
1274 const unsigned char *p;
1275 int src_wrap, ret, x, y;
1277 uint32_t *palette = (uint32_t *)src->data[1];
1280 src_wrap = src->linesize[0] - width;
1282 for(y=0;y<height;y++) {
1283 for(x=0;x<width;x++) {
1284 a = palette[p[0]] >> 24;
1286 ret |= FF_ALPHA_TRANSP;
1287 } else if (a != 0xff) {
1288 ret |= FF_ALPHA_SEMI_TRANSP;
1297 int img_get_alpha_info(const AVPicture *src,
1298 enum PixelFormat pix_fmt, int width, int height)
1300 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1303 /* no alpha can be represented in format */
1308 ret = get_alpha_info_pal8(src, width, height);
1311 /* we do not know, so everything is indicated */
1312 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
1319 #define DEINT_INPLACE_LINE_LUM \
1320 movd_m2r(lum_m4[0],mm0);\
1321 movd_m2r(lum_m3[0],mm1);\
1322 movd_m2r(lum_m2[0],mm2);\
1323 movd_m2r(lum_m1[0],mm3);\
1324 movd_m2r(lum[0],mm4);\
1325 punpcklbw_r2r(mm7,mm0);\
1326 movd_r2m(mm2,lum_m4[0]);\
1327 punpcklbw_r2r(mm7,mm1);\
1328 punpcklbw_r2r(mm7,mm2);\
1329 punpcklbw_r2r(mm7,mm3);\
1330 punpcklbw_r2r(mm7,mm4);\
1331 paddw_r2r(mm3,mm1);\
1333 paddw_r2r(mm4,mm0);\
1335 paddw_r2r(mm6,mm2);\
1336 paddw_r2r(mm2,mm1);\
1337 psubusw_r2r(mm0,mm1);\
1339 packuswb_r2r(mm7,mm1);\
1340 movd_r2m(mm1,lum_m2[0]);
1342 #define DEINT_LINE_LUM \
1343 movd_m2r(lum_m4[0],mm0);\
1344 movd_m2r(lum_m3[0],mm1);\
1345 movd_m2r(lum_m2[0],mm2);\
1346 movd_m2r(lum_m1[0],mm3);\
1347 movd_m2r(lum[0],mm4);\
1348 punpcklbw_r2r(mm7,mm0);\
1349 punpcklbw_r2r(mm7,mm1);\
1350 punpcklbw_r2r(mm7,mm2);\
1351 punpcklbw_r2r(mm7,mm3);\
1352 punpcklbw_r2r(mm7,mm4);\
1353 paddw_r2r(mm3,mm1);\
1355 paddw_r2r(mm4,mm0);\
1357 paddw_r2r(mm6,mm2);\
1358 paddw_r2r(mm2,mm1);\
1359 psubusw_r2r(mm0,mm1);\
1361 packuswb_r2r(mm7,mm1);\
1362 movd_r2m(mm1,dst[0]);
1365 /* filter parameters: [-1 4 2 4 -1] // 8 */
1366 static void deinterlace_line(uint8_t *dst,
1367 const uint8_t *lum_m4, const uint8_t *lum_m3,
1368 const uint8_t *lum_m2, const uint8_t *lum_m1,
1373 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1376 for(;size > 0;size--) {
1378 sum += lum_m3[0] << 2;
1379 sum += lum_m2[0] << 1;
1380 sum += lum_m1[0] << 2;
1382 dst[0] = cm[(sum + 4) >> 3];
1394 movq_m2r(ff_pw_4,mm6);
1396 for (;size > 3; size-=4) {
1407 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
1411 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1414 for(;size > 0;size--) {
1416 sum += lum_m3[0] << 2;
1417 sum += lum_m2[0] << 1;
1418 lum_m4[0]=lum_m2[0];
1419 sum += lum_m1[0] << 2;
1421 lum_m2[0] = cm[(sum + 4) >> 3];
1432 movq_m2r(ff_pw_4,mm6);
1434 for (;size > 3; size-=4) {
1435 DEINT_INPLACE_LINE_LUM
1445 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1446 top field is copied as is, but the bottom field is deinterlaced
1447 against the top field. */
1448 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1449 const uint8_t *src1, int src_wrap,
1450 int width, int height)
1452 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1457 src_0=&src_m1[src_wrap];
1458 src_p1=&src_0[src_wrap];
1459 src_p2=&src_p1[src_wrap];
1460 for(y=0;y<(height-2);y+=2) {
1461 memcpy(dst,src_m1,width);
1463 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1467 src_p1 += 2*src_wrap;
1468 src_p2 += 2*src_wrap;
1471 memcpy(dst,src_m1,width);
1474 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1477 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1478 int width, int height)
1480 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1483 buf = (uint8_t*)av_malloc(width);
1486 memcpy(buf,src_m1,width);
1487 src_0=&src_m1[src_wrap];
1488 src_p1=&src_0[src_wrap];
1489 src_p2=&src_p1[src_wrap];
1490 for(y=0;y<(height-2);y+=2) {
1491 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1494 src_p1 += 2*src_wrap;
1495 src_p2 += 2*src_wrap;
1498 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1502 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1503 enum PixelFormat pix_fmt, int width, int height)
1507 if (pix_fmt != PIX_FMT_YUV420P &&
1508 pix_fmt != PIX_FMT_YUV422P &&
1509 pix_fmt != PIX_FMT_YUV444P &&
1510 pix_fmt != PIX_FMT_YUV411P &&
1511 pix_fmt != PIX_FMT_GRAY8)
1513 if ((width & 3) != 0 || (height & 3) != 0)
1519 case PIX_FMT_YUV420P:
1523 case PIX_FMT_YUV422P:
1526 case PIX_FMT_YUV411P:
1532 if (pix_fmt == PIX_FMT_GRAY8) {
1537 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1540 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1541 src->data[i], src->linesize[i],