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"
39 #include "x86/dsputil_mmx.h"
42 #define xglue(x, y) x ## y
43 #define glue(x, y) xglue(x, y)
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 */
54 typedef struct PixFmtInfo {
56 uint8_t nb_channels; /**< number of channels (including alpha) */
57 uint8_t color_type; /**< color type (see FF_COLOR_xxx constants) */
58 uint8_t pixel_type; /**< pixel storage type (see FF_PIXEL_xxx constants) */
59 uint8_t is_alpha : 1; /**< true if alpha can be specified */
60 uint8_t is_hwaccel : 1; /**< true if this is an HW accelerated format */
61 uint8_t x_chroma_shift; /**< X chroma subsampling factor is 2 ^ shift */
62 uint8_t y_chroma_shift; /**< Y chroma subsampling factor is 2 ^ shift */
63 uint8_t depth; /**< bit depth of the color components */
66 /* this table gives more information about formats */
67 static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
72 .color_type = FF_COLOR_YUV,
73 .pixel_type = FF_PIXEL_PLANAR,
75 .x_chroma_shift = 1, .y_chroma_shift = 1,
80 .color_type = FF_COLOR_YUV,
81 .pixel_type = FF_PIXEL_PLANAR,
83 .x_chroma_shift = 1, .y_chroma_shift = 0,
88 .color_type = FF_COLOR_YUV,
89 .pixel_type = FF_PIXEL_PLANAR,
91 .x_chroma_shift = 0, .y_chroma_shift = 0,
96 .color_type = FF_COLOR_YUV,
97 .pixel_type = FF_PIXEL_PACKED,
99 .x_chroma_shift = 1, .y_chroma_shift = 0,
101 [PIX_FMT_UYVY422] = {
104 .color_type = FF_COLOR_YUV,
105 .pixel_type = FF_PIXEL_PACKED,
107 .x_chroma_shift = 1, .y_chroma_shift = 0,
109 [PIX_FMT_YUV410P] = {
112 .color_type = FF_COLOR_YUV,
113 .pixel_type = FF_PIXEL_PLANAR,
115 .x_chroma_shift = 2, .y_chroma_shift = 2,
117 [PIX_FMT_YUV411P] = {
120 .color_type = FF_COLOR_YUV,
121 .pixel_type = FF_PIXEL_PLANAR,
123 .x_chroma_shift = 2, .y_chroma_shift = 0,
125 [PIX_FMT_YUV440P] = {
128 .color_type = FF_COLOR_YUV,
129 .pixel_type = FF_PIXEL_PLANAR,
131 .x_chroma_shift = 0, .y_chroma_shift = 1,
134 /* YUV formats with alpha plane */
135 [PIX_FMT_YUVA420P] = {
138 .color_type = FF_COLOR_YUV,
139 .pixel_type = FF_PIXEL_PLANAR,
141 .x_chroma_shift = 1, .y_chroma_shift = 1,
145 [PIX_FMT_YUVJ420P] = {
148 .color_type = FF_COLOR_YUV_JPEG,
149 .pixel_type = FF_PIXEL_PLANAR,
151 .x_chroma_shift = 1, .y_chroma_shift = 1,
153 [PIX_FMT_YUVJ422P] = {
156 .color_type = FF_COLOR_YUV_JPEG,
157 .pixel_type = FF_PIXEL_PLANAR,
159 .x_chroma_shift = 1, .y_chroma_shift = 0,
161 [PIX_FMT_YUVJ444P] = {
164 .color_type = FF_COLOR_YUV_JPEG,
165 .pixel_type = FF_PIXEL_PLANAR,
167 .x_chroma_shift = 0, .y_chroma_shift = 0,
169 [PIX_FMT_YUVJ440P] = {
172 .color_type = FF_COLOR_YUV_JPEG,
173 .pixel_type = FF_PIXEL_PLANAR,
175 .x_chroma_shift = 0, .y_chroma_shift = 1,
182 .color_type = FF_COLOR_RGB,
183 .pixel_type = FF_PIXEL_PACKED,
185 .x_chroma_shift = 0, .y_chroma_shift = 0,
190 .color_type = FF_COLOR_RGB,
191 .pixel_type = FF_PIXEL_PACKED,
193 .x_chroma_shift = 0, .y_chroma_shift = 0,
197 .nb_channels = 4, .is_alpha = 1,
198 .color_type = FF_COLOR_RGB,
199 .pixel_type = FF_PIXEL_PACKED,
201 .x_chroma_shift = 0, .y_chroma_shift = 0,
203 [PIX_FMT_RGB48BE] = {
206 .color_type = FF_COLOR_RGB,
207 .pixel_type = FF_PIXEL_PACKED,
209 .x_chroma_shift = 0, .y_chroma_shift = 0,
211 [PIX_FMT_RGB48LE] = {
214 .color_type = FF_COLOR_RGB,
215 .pixel_type = FF_PIXEL_PACKED,
217 .x_chroma_shift = 0, .y_chroma_shift = 0,
222 .color_type = FF_COLOR_RGB,
223 .pixel_type = FF_PIXEL_PACKED,
225 .x_chroma_shift = 0, .y_chroma_shift = 0,
230 .color_type = FF_COLOR_RGB,
231 .pixel_type = FF_PIXEL_PACKED,
233 .x_chroma_shift = 0, .y_chroma_shift = 0,
236 /* gray / mono formats */
237 [PIX_FMT_GRAY16BE] = {
240 .color_type = FF_COLOR_GRAY,
241 .pixel_type = FF_PIXEL_PLANAR,
244 [PIX_FMT_GRAY16LE] = {
247 .color_type = FF_COLOR_GRAY,
248 .pixel_type = FF_PIXEL_PLANAR,
254 .color_type = FF_COLOR_GRAY,
255 .pixel_type = FF_PIXEL_PLANAR,
258 [PIX_FMT_MONOWHITE] = {
261 .color_type = FF_COLOR_GRAY,
262 .pixel_type = FF_PIXEL_PLANAR,
265 [PIX_FMT_MONOBLACK] = {
268 .color_type = FF_COLOR_GRAY,
269 .pixel_type = FF_PIXEL_PLANAR,
273 /* paletted formats */
276 .nb_channels = 4, .is_alpha = 1,
277 .color_type = FF_COLOR_RGB,
278 .pixel_type = FF_PIXEL_PALETTE,
281 [PIX_FMT_XVMC_MPEG2_MC] = {
285 [PIX_FMT_XVMC_MPEG2_IDCT] = {
289 [PIX_FMT_VDPAU_MPEG1] = {
290 .name = "vdpau_mpeg1",
292 .x_chroma_shift = 1, .y_chroma_shift = 1,
294 [PIX_FMT_VDPAU_MPEG2] = {
295 .name = "vdpau_mpeg2",
297 .x_chroma_shift = 1, .y_chroma_shift = 1,
299 [PIX_FMT_VDPAU_H264] = {
300 .name = "vdpau_h264",
302 .x_chroma_shift = 1, .y_chroma_shift = 1,
304 [PIX_FMT_VDPAU_WMV3] = {
305 .name = "vdpau_wmv3",
307 .x_chroma_shift = 1, .y_chroma_shift = 1,
309 [PIX_FMT_VDPAU_VC1] = {
312 .x_chroma_shift = 1, .y_chroma_shift = 1,
314 [PIX_FMT_UYYVYY411] = {
317 .color_type = FF_COLOR_YUV,
318 .pixel_type = FF_PIXEL_PACKED,
320 .x_chroma_shift = 2, .y_chroma_shift = 0,
324 .nb_channels = 4, .is_alpha = 1,
325 .color_type = FF_COLOR_RGB,
326 .pixel_type = FF_PIXEL_PACKED,
328 .x_chroma_shift = 0, .y_chroma_shift = 0,
333 .color_type = FF_COLOR_RGB,
334 .pixel_type = FF_PIXEL_PACKED,
336 .x_chroma_shift = 0, .y_chroma_shift = 0,
341 .color_type = FF_COLOR_RGB,
342 .pixel_type = FF_PIXEL_PACKED,
344 .x_chroma_shift = 0, .y_chroma_shift = 0,
349 .color_type = FF_COLOR_RGB,
350 .pixel_type = FF_PIXEL_PACKED,
352 .x_chroma_shift = 0, .y_chroma_shift = 0,
357 .color_type = FF_COLOR_RGB,
358 .pixel_type = FF_PIXEL_PACKED,
360 .x_chroma_shift = 0, .y_chroma_shift = 0,
362 [PIX_FMT_RGB4_BYTE] = {
365 .color_type = FF_COLOR_RGB,
366 .pixel_type = FF_PIXEL_PACKED,
368 .x_chroma_shift = 0, .y_chroma_shift = 0,
373 .color_type = FF_COLOR_RGB,
374 .pixel_type = FF_PIXEL_PACKED,
376 .x_chroma_shift = 0, .y_chroma_shift = 0,
381 .color_type = FF_COLOR_RGB,
382 .pixel_type = FF_PIXEL_PACKED,
384 .x_chroma_shift = 0, .y_chroma_shift = 0,
386 [PIX_FMT_BGR4_BYTE] = {
389 .color_type = FF_COLOR_RGB,
390 .pixel_type = FF_PIXEL_PACKED,
392 .x_chroma_shift = 0, .y_chroma_shift = 0,
397 .color_type = FF_COLOR_YUV,
398 .pixel_type = FF_PIXEL_PLANAR,
400 .x_chroma_shift = 1, .y_chroma_shift = 1,
405 .color_type = FF_COLOR_YUV,
406 .pixel_type = FF_PIXEL_PLANAR,
408 .x_chroma_shift = 1, .y_chroma_shift = 1,
411 [PIX_FMT_BGR32_1] = {
413 .nb_channels = 4, .is_alpha = 1,
414 .color_type = FF_COLOR_RGB,
415 .pixel_type = FF_PIXEL_PACKED,
417 .x_chroma_shift = 0, .y_chroma_shift = 0,
419 [PIX_FMT_RGB32_1] = {
421 .nb_channels = 4, .is_alpha = 1,
422 .color_type = FF_COLOR_RGB,
423 .pixel_type = FF_PIXEL_PACKED,
425 .x_chroma_shift = 0, .y_chroma_shift = 0,
429 [PIX_FMT_VAAPI_MOCO] = {
430 .name = "vaapi_moco",
432 .x_chroma_shift = 1, .y_chroma_shift = 1,
434 [PIX_FMT_VAAPI_IDCT] = {
435 .name = "vaapi_idct",
437 .x_chroma_shift = 1, .y_chroma_shift = 1,
439 [PIX_FMT_VAAPI_VLD] = {
442 .x_chroma_shift = 1, .y_chroma_shift = 1,
446 void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
448 *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
449 *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
452 const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
454 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
457 return pix_fmt_info[pix_fmt].name;
460 static enum PixelFormat avcodec_get_pix_fmt_internal(const char *name)
464 for (i=0; i < PIX_FMT_NB; i++)
465 if (!strcmp(pix_fmt_info[i].name, name))
470 enum PixelFormat avcodec_get_pix_fmt(const char *name)
472 #ifdef WORDS_BIGENDIAN
477 enum PixelFormat pix_fmt = avcodec_get_pix_fmt_internal(name);
479 if (pix_fmt == PIX_FMT_NONE) {
481 snprintf(name2, sizeof(name2), "%s%s", name, NE);
482 pix_fmt = avcodec_get_pix_fmt_internal(name2);
488 void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
492 snprintf (buf, buf_size,
493 "name " " nb_channels" " depth" " is_alpha"
496 PixFmtInfo info= pix_fmt_info[pix_fmt];
498 char is_alpha_char= info.is_alpha ? 'y' : 'n';
500 snprintf (buf, buf_size,
501 "%-10s" " %1d " " %2d " " %c ",
510 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
512 return pix_fmt_info[pix_fmt].is_hwaccel;
515 int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
518 for(i=0; i<256; i++){
532 case PIX_FMT_RGB4_BYTE:
537 case PIX_FMT_BGR4_BYTE:
548 pal[i] = b + (g<<8) + (r<<16);
554 int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
557 const PixFmtInfo *pinfo;
559 memset(picture->linesize, 0, sizeof(picture->linesize));
561 pinfo = &pix_fmt_info[pix_fmt];
563 case PIX_FMT_YUV420P:
564 case PIX_FMT_YUV422P:
565 case PIX_FMT_YUV444P:
566 case PIX_FMT_YUV410P:
567 case PIX_FMT_YUV411P:
568 case PIX_FMT_YUV440P:
569 case PIX_FMT_YUVJ420P:
570 case PIX_FMT_YUVJ422P:
571 case PIX_FMT_YUVJ444P:
572 case PIX_FMT_YUVJ440P:
573 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
574 picture->linesize[0] = width;
575 picture->linesize[1] = w2;
576 picture->linesize[2] = w2;
578 case PIX_FMT_YUVA420P:
579 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
580 picture->linesize[0] = width;
581 picture->linesize[1] = w2;
582 picture->linesize[2] = w2;
583 picture->linesize[3] = width;
587 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
588 picture->linesize[0] = width;
589 picture->linesize[1] = w2;
593 picture->linesize[0] = width * 3;
597 case PIX_FMT_RGB32_1:
598 case PIX_FMT_BGR32_1:
599 picture->linesize[0] = width * 4;
601 case PIX_FMT_RGB48BE:
602 case PIX_FMT_RGB48LE:
603 picture->linesize[0] = width * 6;
605 case PIX_FMT_GRAY16BE:
606 case PIX_FMT_GRAY16LE:
611 case PIX_FMT_YUYV422:
612 picture->linesize[0] = width * 2;
614 case PIX_FMT_UYVY422:
615 picture->linesize[0] = width * 2;
617 case PIX_FMT_UYYVYY411:
618 picture->linesize[0] = width + width/2;
622 picture->linesize[0] = width / 2;
624 case PIX_FMT_MONOWHITE:
625 case PIX_FMT_MONOBLACK:
626 picture->linesize[0] = (width + 7) >> 3;
631 case PIX_FMT_RGB4_BYTE:
632 case PIX_FMT_BGR4_BYTE:
634 picture->linesize[0] = width;
642 int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
646 const PixFmtInfo *pinfo;
648 pinfo = &pix_fmt_info[pix_fmt];
649 size = picture->linesize[0] * height;
651 case PIX_FMT_YUV420P:
652 case PIX_FMT_YUV422P:
653 case PIX_FMT_YUV444P:
654 case PIX_FMT_YUV410P:
655 case PIX_FMT_YUV411P:
656 case PIX_FMT_YUV440P:
657 case PIX_FMT_YUVJ420P:
658 case PIX_FMT_YUVJ422P:
659 case PIX_FMT_YUVJ444P:
660 case PIX_FMT_YUVJ440P:
661 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
662 size2 = picture->linesize[1] * h2;
663 picture->data[0] = ptr;
664 picture->data[1] = picture->data[0] + size;
665 picture->data[2] = picture->data[1] + size2;
666 picture->data[3] = NULL;
667 return size + 2 * size2;
668 case PIX_FMT_YUVA420P:
669 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
670 size2 = picture->linesize[1] * h2;
671 picture->data[0] = ptr;
672 picture->data[1] = picture->data[0] + size;
673 picture->data[2] = picture->data[1] + size2;
674 picture->data[3] = picture->data[1] + size2 + size2;
675 return 2 * size + 2 * size2;
678 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
679 size2 = picture->linesize[1] * h2 * 2;
680 picture->data[0] = ptr;
681 picture->data[1] = picture->data[0] + size;
682 picture->data[2] = NULL;
683 picture->data[3] = NULL;
684 return size + 2 * size2;
689 case PIX_FMT_RGB32_1:
690 case PIX_FMT_BGR32_1:
691 case PIX_FMT_RGB48BE:
692 case PIX_FMT_RGB48LE:
693 case PIX_FMT_GRAY16BE:
694 case PIX_FMT_GRAY16LE:
699 case PIX_FMT_YUYV422:
700 case PIX_FMT_UYVY422:
701 case PIX_FMT_UYYVYY411:
704 case PIX_FMT_MONOWHITE:
705 case PIX_FMT_MONOBLACK:
706 picture->data[0] = ptr;
707 picture->data[1] = NULL;
708 picture->data[2] = NULL;
709 picture->data[3] = NULL;
714 case PIX_FMT_RGB4_BYTE:
715 case PIX_FMT_BGR4_BYTE:
717 size2 = (size + 3) & ~3;
718 picture->data[0] = ptr;
719 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
720 picture->data[2] = NULL;
721 picture->data[3] = NULL;
722 return size2 + 256 * 4;
724 picture->data[0] = NULL;
725 picture->data[1] = NULL;
726 picture->data[2] = NULL;
727 picture->data[3] = NULL;
732 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
733 enum PixelFormat pix_fmt, int width, int height)
736 if(avcodec_check_dimensions(NULL, width, height))
739 if (ff_fill_linesize(picture, pix_fmt, width))
742 return ff_fill_pointer(picture, ptr, pix_fmt, height);
745 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
746 unsigned char *dest, int dest_size)
748 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
749 int i, j, w, ow, h, oh, data_planes;
750 const unsigned char* s;
751 int size = avpicture_get_size(pix_fmt, width, height);
753 if (size > dest_size || size < 0)
756 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
757 if (pix_fmt == PIX_FMT_YUYV422 ||
758 pix_fmt == PIX_FMT_UYVY422 ||
759 pix_fmt == PIX_FMT_BGR565 ||
760 pix_fmt == PIX_FMT_BGR555 ||
761 pix_fmt == PIX_FMT_RGB565 ||
762 pix_fmt == PIX_FMT_RGB555)
764 else if (pix_fmt == PIX_FMT_UYYVYY411)
766 else if (pix_fmt == PIX_FMT_PAL8)
769 w = width * (pf->depth * pf->nb_channels / 8);
774 data_planes = pf->nb_channels;
775 w = (width*pf->depth + 7)/8;
782 for (i=0; i<data_planes; i++) {
784 w = width >> pf->x_chroma_shift;
785 h = height >> pf->y_chroma_shift;
794 s += src->linesize[i];
798 if (pf->pixel_type == FF_PIXEL_PALETTE)
799 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
804 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
806 AVPicture dummy_pict;
807 if(avcodec_check_dimensions(NULL, width, height))
812 case PIX_FMT_RGB4_BYTE:
813 case PIX_FMT_BGR4_BYTE:
815 // do not include palette for these pseudo-paletted formats
816 return width * height;
818 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
821 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
824 const PixFmtInfo *pf, *ps;
827 ps = &pix_fmt_info[src_pix_fmt];
828 pf = &pix_fmt_info[dst_pix_fmt];
832 pf = &pix_fmt_info[dst_pix_fmt];
833 if (pf->depth < ps->depth ||
834 (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
835 loss |= FF_LOSS_DEPTH;
836 if (pf->x_chroma_shift > ps->x_chroma_shift ||
837 pf->y_chroma_shift > ps->y_chroma_shift)
838 loss |= FF_LOSS_RESOLUTION;
839 switch(pf->color_type) {
841 if (ps->color_type != FF_COLOR_RGB &&
842 ps->color_type != FF_COLOR_GRAY)
843 loss |= FF_LOSS_COLORSPACE;
846 if (ps->color_type != FF_COLOR_GRAY)
847 loss |= FF_LOSS_COLORSPACE;
850 if (ps->color_type != FF_COLOR_YUV)
851 loss |= FF_LOSS_COLORSPACE;
853 case FF_COLOR_YUV_JPEG:
854 if (ps->color_type != FF_COLOR_YUV_JPEG &&
855 ps->color_type != FF_COLOR_YUV &&
856 ps->color_type != FF_COLOR_GRAY)
857 loss |= FF_LOSS_COLORSPACE;
861 if (ps->color_type != pf->color_type)
862 loss |= FF_LOSS_COLORSPACE;
865 if (pf->color_type == FF_COLOR_GRAY &&
866 ps->color_type != FF_COLOR_GRAY)
867 loss |= FF_LOSS_CHROMA;
868 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
869 loss |= FF_LOSS_ALPHA;
870 if (pf->pixel_type == FF_PIXEL_PALETTE &&
871 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
872 loss |= FF_LOSS_COLORQUANT;
876 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
879 const PixFmtInfo *pf;
881 pf = &pix_fmt_info[pix_fmt];
882 switch(pf->pixel_type) {
883 case FF_PIXEL_PACKED:
885 case PIX_FMT_YUYV422:
886 case PIX_FMT_UYVY422:
893 case PIX_FMT_UYYVYY411:
897 bits = pf->depth * pf->nb_channels;
901 case FF_PIXEL_PLANAR:
902 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
903 bits = pf->depth * pf->nb_channels;
905 bits = pf->depth + ((2 * pf->depth) >>
906 (pf->x_chroma_shift + pf->y_chroma_shift));
909 case FF_PIXEL_PALETTE:
919 static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
920 enum PixelFormat src_pix_fmt,
924 int dist, i, loss, min_dist;
925 enum PixelFormat dst_pix_fmt;
927 /* find exact color match with smallest size */
929 min_dist = 0x7fffffff;
930 for(i = 0;i < PIX_FMT_NB; i++) {
931 if (pix_fmt_mask & (1ULL << i)) {
932 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
934 dist = avg_bits_per_pixel(i);
935 if (dist < min_dist) {
945 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
946 int has_alpha, int *loss_ptr)
948 enum PixelFormat dst_pix_fmt;
950 static const int loss_mask_order[] = {
951 ~0, /* no loss first */
954 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
960 /* try with successive loss */
963 loss_mask = loss_mask_order[i++];
964 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
965 has_alpha, loss_mask);
966 if (dst_pix_fmt >= 0)
974 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
978 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
979 const uint8_t *src, int src_wrap,
980 int width, int height)
984 for(;height > 0; height--) {
985 memcpy(dst, src, width);
991 int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
994 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
996 pf = &pix_fmt_info[pix_fmt];
997 switch(pf->pixel_type) {
998 case FF_PIXEL_PACKED:
1000 case PIX_FMT_YUYV422:
1001 case PIX_FMT_UYVY422:
1002 case PIX_FMT_RGB565:
1003 case PIX_FMT_RGB555:
1004 case PIX_FMT_BGR565:
1005 case PIX_FMT_BGR555:
1008 case PIX_FMT_UYYVYY411:
1012 bits = pf->depth * pf->nb_channels;
1015 return (width * bits + 7) >> 3;
1017 case FF_PIXEL_PLANAR:
1018 if (plane == 1 || plane == 2)
1019 width= -((-width)>>pf->x_chroma_shift);
1021 return (width * pf->depth + 7) >> 3;
1023 case FF_PIXEL_PALETTE:
1032 void av_picture_copy(AVPicture *dst, const AVPicture *src,
1033 enum PixelFormat pix_fmt, int width, int height)
1036 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1038 pf = &pix_fmt_info[pix_fmt];
1039 switch(pf->pixel_type) {
1040 case FF_PIXEL_PACKED:
1041 case FF_PIXEL_PLANAR:
1042 for(i = 0; i < pf->nb_channels; i++) {
1044 int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
1046 if (i == 1 || i == 2) {
1047 h= -((-height)>>pf->y_chroma_shift);
1049 ff_img_copy_plane(dst->data[i], dst->linesize[i],
1050 src->data[i], src->linesize[i],
1054 case FF_PIXEL_PALETTE:
1055 ff_img_copy_plane(dst->data[0], dst->linesize[0],
1056 src->data[0], src->linesize[0],
1058 /* copy the palette */
1059 ff_img_copy_plane(dst->data[1], dst->linesize[1],
1060 src->data[1], src->linesize[1],
1067 void ff_shrink22(uint8_t *dst, int dst_wrap,
1068 const uint8_t *src, int src_wrap,
1069 int width, int height)
1072 const uint8_t *s1, *s2;
1075 for(;height > 0; height--) {
1079 for(w = width;w >= 4; w-=4) {
1080 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1081 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1082 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1083 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1089 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1094 src += 2 * src_wrap;
1100 void ff_shrink44(uint8_t *dst, int dst_wrap,
1101 const uint8_t *src, int src_wrap,
1102 int width, int height)
1105 const uint8_t *s1, *s2, *s3, *s4;
1108 for(;height > 0; height--) {
1114 for(w = width;w > 0; w--) {
1115 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1116 s2[0] + s2[1] + s2[2] + s2[3] +
1117 s3[0] + s3[1] + s3[2] + s3[3] +
1118 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1125 src += 4 * src_wrap;
1131 void ff_shrink88(uint8_t *dst, int dst_wrap,
1132 const uint8_t *src, int src_wrap,
1133 int width, int height)
1137 for(;height > 0; height--) {
1138 for(w = width;w > 0; w--) {
1141 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1144 *(dst++) = (tmp + 32)>>6;
1145 src += 8 - 8*src_wrap;
1147 src += 8*src_wrap - 8*width;
1148 dst += dst_wrap - width;
1153 int avpicture_alloc(AVPicture *picture,
1154 enum PixelFormat pix_fmt, int width, int height)
1159 size = avpicture_fill(picture, NULL, pix_fmt, width, height);
1162 ptr = av_malloc(size);
1165 avpicture_fill(picture, ptr, pix_fmt, width, height);
1166 if(picture->data[1] && !picture->data[2])
1167 ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt);
1171 memset(picture, 0, sizeof(AVPicture));
1175 void avpicture_free(AVPicture *picture)
1177 av_free(picture->data[0]);
1180 /* return true if yuv planar */
1181 static inline int is_yuv_planar(const PixFmtInfo *ps)
1183 return (ps->color_type == FF_COLOR_YUV ||
1184 ps->color_type == FF_COLOR_YUV_JPEG) &&
1185 ps->pixel_type == FF_PIXEL_PLANAR;
1188 int av_picture_crop(AVPicture *dst, const AVPicture *src,
1189 int pix_fmt, int top_band, int left_band)
1194 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
1197 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
1198 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
1200 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
1201 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
1202 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
1204 dst->linesize[0] = src->linesize[0];
1205 dst->linesize[1] = src->linesize[1];
1206 dst->linesize[2] = src->linesize[2];
1210 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
1211 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
1220 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
1221 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
1223 for (i = 0; i < 3; i++) {
1224 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
1225 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
1227 if (padtop || padleft) {
1228 memset(dst->data[i], color[i],
1229 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
1232 if (padleft || padright) {
1233 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1234 (dst->linesize[i] - (padright >> x_shift));
1235 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1236 for (y = 0; y < yheight; y++) {
1237 memset(optr, color[i], (padleft + padright) >> x_shift);
1238 optr += dst->linesize[i];
1242 if (src) { /* first line */
1243 uint8_t *iptr = src->data[i];
1244 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1245 (padleft >> x_shift);
1246 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
1247 iptr += src->linesize[i];
1248 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1249 (dst->linesize[i] - (padright >> x_shift));
1250 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1251 for (y = 0; y < yheight; y++) {
1252 memset(optr, color[i], (padleft + padright) >> x_shift);
1253 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
1254 (width - padleft - padright) >> x_shift);
1255 iptr += src->linesize[i];
1256 optr += dst->linesize[i];
1260 if (padbottom || padright) {
1261 optr = dst->data[i] + dst->linesize[i] *
1262 ((height - padbottom) >> y_shift) - (padright >> x_shift);
1263 memset(optr, color[i],dst->linesize[i] *
1264 (padbottom >> y_shift) + (padright >> x_shift));
1270 /* NOTE: we scan all the pixels to have an exact information */
1271 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
1273 const unsigned char *p;
1274 int src_wrap, ret, x, y;
1276 uint32_t *palette = (uint32_t *)src->data[1];
1279 src_wrap = src->linesize[0] - width;
1281 for(y=0;y<height;y++) {
1282 for(x=0;x<width;x++) {
1283 a = palette[p[0]] >> 24;
1285 ret |= FF_ALPHA_TRANSP;
1286 } else if (a != 0xff) {
1287 ret |= FF_ALPHA_SEMI_TRANSP;
1296 int img_get_alpha_info(const AVPicture *src,
1297 enum PixelFormat pix_fmt, int width, int height)
1299 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1302 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],