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 enum PixelFormat avcodec_get_pix_fmt(const char* name)
464 for (i=0; i < PIX_FMT_NB; i++)
465 if (!strcmp(pix_fmt_info[i].name, name))
470 void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
474 snprintf (buf, buf_size,
475 "name " " nb_channels" " depth" " is_alpha"
478 PixFmtInfo info= pix_fmt_info[pix_fmt];
480 char is_alpha_char= info.is_alpha ? 'y' : 'n';
482 snprintf (buf, buf_size,
483 "%-10s" " %1d " " %2d " " %c ",
492 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
494 return pix_fmt_info[pix_fmt].is_hwaccel;
497 int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
500 for(i=0; i<256; i++){
514 case PIX_FMT_RGB4_BYTE:
519 case PIX_FMT_BGR4_BYTE:
530 pal[i] = b + (g<<8) + (r<<16);
536 int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
539 const PixFmtInfo *pinfo;
541 memset(picture->linesize, 0, sizeof(picture->linesize));
543 pinfo = &pix_fmt_info[pix_fmt];
545 case PIX_FMT_YUV420P:
546 case PIX_FMT_YUV422P:
547 case PIX_FMT_YUV444P:
548 case PIX_FMT_YUV410P:
549 case PIX_FMT_YUV411P:
550 case PIX_FMT_YUV440P:
551 case PIX_FMT_YUVJ420P:
552 case PIX_FMT_YUVJ422P:
553 case PIX_FMT_YUVJ444P:
554 case PIX_FMT_YUVJ440P:
555 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
556 picture->linesize[0] = width;
557 picture->linesize[1] = w2;
558 picture->linesize[2] = w2;
560 case PIX_FMT_YUVA420P:
561 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
562 picture->linesize[0] = width;
563 picture->linesize[1] = w2;
564 picture->linesize[2] = w2;
565 picture->linesize[3] = width;
569 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
570 picture->linesize[0] = width;
571 picture->linesize[1] = w2;
575 picture->linesize[0] = width * 3;
579 case PIX_FMT_RGB32_1:
580 case PIX_FMT_BGR32_1:
581 picture->linesize[0] = width * 4;
583 case PIX_FMT_RGB48BE:
584 case PIX_FMT_RGB48LE:
585 picture->linesize[0] = width * 6;
587 case PIX_FMT_GRAY16BE:
588 case PIX_FMT_GRAY16LE:
593 case PIX_FMT_YUYV422:
594 picture->linesize[0] = width * 2;
596 case PIX_FMT_UYVY422:
597 picture->linesize[0] = width * 2;
599 case PIX_FMT_UYYVYY411:
600 picture->linesize[0] = width + width/2;
604 picture->linesize[0] = width / 2;
606 case PIX_FMT_MONOWHITE:
607 case PIX_FMT_MONOBLACK:
608 picture->linesize[0] = (width + 7) >> 3;
613 case PIX_FMT_RGB4_BYTE:
614 case PIX_FMT_BGR4_BYTE:
616 picture->linesize[0] = width;
624 int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
628 const PixFmtInfo *pinfo;
630 pinfo = &pix_fmt_info[pix_fmt];
631 size = picture->linesize[0] * height;
633 case PIX_FMT_YUV420P:
634 case PIX_FMT_YUV422P:
635 case PIX_FMT_YUV444P:
636 case PIX_FMT_YUV410P:
637 case PIX_FMT_YUV411P:
638 case PIX_FMT_YUV440P:
639 case PIX_FMT_YUVJ420P:
640 case PIX_FMT_YUVJ422P:
641 case PIX_FMT_YUVJ444P:
642 case PIX_FMT_YUVJ440P:
643 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
644 size2 = picture->linesize[1] * h2;
645 picture->data[0] = ptr;
646 picture->data[1] = picture->data[0] + size;
647 picture->data[2] = picture->data[1] + size2;
648 picture->data[3] = NULL;
649 return size + 2 * size2;
650 case PIX_FMT_YUVA420P:
651 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
652 size2 = picture->linesize[1] * h2;
653 picture->data[0] = ptr;
654 picture->data[1] = picture->data[0] + size;
655 picture->data[2] = picture->data[1] + size2;
656 picture->data[3] = picture->data[1] + size2 + size2;
657 return 2 * size + 2 * size2;
660 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
661 size2 = picture->linesize[1] * h2 * 2;
662 picture->data[0] = ptr;
663 picture->data[1] = picture->data[0] + size;
664 picture->data[2] = NULL;
665 picture->data[3] = NULL;
666 return size + 2 * size2;
671 case PIX_FMT_RGB32_1:
672 case PIX_FMT_BGR32_1:
673 case PIX_FMT_RGB48BE:
674 case PIX_FMT_RGB48LE:
675 case PIX_FMT_GRAY16BE:
676 case PIX_FMT_GRAY16LE:
681 case PIX_FMT_YUYV422:
682 case PIX_FMT_UYVY422:
683 case PIX_FMT_UYYVYY411:
686 case PIX_FMT_MONOWHITE:
687 case PIX_FMT_MONOBLACK:
688 picture->data[0] = ptr;
689 picture->data[1] = NULL;
690 picture->data[2] = NULL;
691 picture->data[3] = NULL;
696 case PIX_FMT_RGB4_BYTE:
697 case PIX_FMT_BGR4_BYTE:
699 size2 = (size + 3) & ~3;
700 picture->data[0] = ptr;
701 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
702 picture->data[2] = NULL;
703 picture->data[3] = NULL;
704 return size2 + 256 * 4;
706 picture->data[0] = NULL;
707 picture->data[1] = NULL;
708 picture->data[2] = NULL;
709 picture->data[3] = NULL;
714 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
715 enum PixelFormat pix_fmt, int width, int height)
718 if(avcodec_check_dimensions(NULL, width, height))
721 if (ff_fill_linesize(picture, pix_fmt, width))
724 return ff_fill_pointer(picture, ptr, pix_fmt, height);
727 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
728 unsigned char *dest, int dest_size)
730 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
731 int i, j, w, ow, h, oh, data_planes;
732 const unsigned char* s;
733 int size = avpicture_get_size(pix_fmt, width, height);
735 if (size > dest_size || size < 0)
738 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
739 if (pix_fmt == PIX_FMT_YUYV422 ||
740 pix_fmt == PIX_FMT_UYVY422 ||
741 pix_fmt == PIX_FMT_BGR565 ||
742 pix_fmt == PIX_FMT_BGR555 ||
743 pix_fmt == PIX_FMT_RGB565 ||
744 pix_fmt == PIX_FMT_RGB555)
746 else if (pix_fmt == PIX_FMT_UYYVYY411)
748 else if (pix_fmt == PIX_FMT_PAL8)
751 w = width * (pf->depth * pf->nb_channels / 8);
756 data_planes = pf->nb_channels;
757 w = (width*pf->depth + 7)/8;
764 for (i=0; i<data_planes; i++) {
766 w = width >> pf->x_chroma_shift;
767 h = height >> pf->y_chroma_shift;
776 s += src->linesize[i];
780 if (pf->pixel_type == FF_PIXEL_PALETTE)
781 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
786 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
788 AVPicture dummy_pict;
789 if(avcodec_check_dimensions(NULL, width, height))
794 case PIX_FMT_RGB4_BYTE:
795 case PIX_FMT_BGR4_BYTE:
797 // do not include palette for these pseudo-paletted formats
798 return width * height;
800 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
803 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
806 const PixFmtInfo *pf, *ps;
809 ps = &pix_fmt_info[src_pix_fmt];
810 pf = &pix_fmt_info[dst_pix_fmt];
814 pf = &pix_fmt_info[dst_pix_fmt];
815 if (pf->depth < ps->depth ||
816 (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
817 loss |= FF_LOSS_DEPTH;
818 if (pf->x_chroma_shift > ps->x_chroma_shift ||
819 pf->y_chroma_shift > ps->y_chroma_shift)
820 loss |= FF_LOSS_RESOLUTION;
821 switch(pf->color_type) {
823 if (ps->color_type != FF_COLOR_RGB &&
824 ps->color_type != FF_COLOR_GRAY)
825 loss |= FF_LOSS_COLORSPACE;
828 if (ps->color_type != FF_COLOR_GRAY)
829 loss |= FF_LOSS_COLORSPACE;
832 if (ps->color_type != FF_COLOR_YUV)
833 loss |= FF_LOSS_COLORSPACE;
835 case FF_COLOR_YUV_JPEG:
836 if (ps->color_type != FF_COLOR_YUV_JPEG &&
837 ps->color_type != FF_COLOR_YUV &&
838 ps->color_type != FF_COLOR_GRAY)
839 loss |= FF_LOSS_COLORSPACE;
843 if (ps->color_type != pf->color_type)
844 loss |= FF_LOSS_COLORSPACE;
847 if (pf->color_type == FF_COLOR_GRAY &&
848 ps->color_type != FF_COLOR_GRAY)
849 loss |= FF_LOSS_CHROMA;
850 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
851 loss |= FF_LOSS_ALPHA;
852 if (pf->pixel_type == FF_PIXEL_PALETTE &&
853 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
854 loss |= FF_LOSS_COLORQUANT;
858 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
861 const PixFmtInfo *pf;
863 pf = &pix_fmt_info[pix_fmt];
864 switch(pf->pixel_type) {
865 case FF_PIXEL_PACKED:
867 case PIX_FMT_YUYV422:
868 case PIX_FMT_UYVY422:
875 case PIX_FMT_UYYVYY411:
879 bits = pf->depth * pf->nb_channels;
883 case FF_PIXEL_PLANAR:
884 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
885 bits = pf->depth * pf->nb_channels;
887 bits = pf->depth + ((2 * pf->depth) >>
888 (pf->x_chroma_shift + pf->y_chroma_shift));
891 case FF_PIXEL_PALETTE:
901 static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
902 enum PixelFormat src_pix_fmt,
906 int dist, i, loss, min_dist;
907 enum PixelFormat dst_pix_fmt;
909 /* find exact color match with smallest size */
911 min_dist = 0x7fffffff;
912 for(i = 0;i < PIX_FMT_NB; i++) {
913 if (pix_fmt_mask & (1ULL << i)) {
914 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
916 dist = avg_bits_per_pixel(i);
917 if (dist < min_dist) {
927 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
928 int has_alpha, int *loss_ptr)
930 enum PixelFormat dst_pix_fmt;
932 static const int loss_mask_order[] = {
933 ~0, /* no loss first */
936 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
942 /* try with successive loss */
945 loss_mask = loss_mask_order[i++];
946 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
947 has_alpha, loss_mask);
948 if (dst_pix_fmt >= 0)
956 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
960 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
961 const uint8_t *src, int src_wrap,
962 int width, int height)
966 for(;height > 0; height--) {
967 memcpy(dst, src, width);
973 int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
976 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
978 pf = &pix_fmt_info[pix_fmt];
979 switch(pf->pixel_type) {
980 case FF_PIXEL_PACKED:
982 case PIX_FMT_YUYV422:
983 case PIX_FMT_UYVY422:
990 case PIX_FMT_UYYVYY411:
994 bits = pf->depth * pf->nb_channels;
997 return (width * bits + 7) >> 3;
999 case FF_PIXEL_PLANAR:
1000 if (plane == 1 || plane == 2)
1001 width= -((-width)>>pf->x_chroma_shift);
1003 return (width * pf->depth + 7) >> 3;
1005 case FF_PIXEL_PALETTE:
1014 void av_picture_copy(AVPicture *dst, const AVPicture *src,
1015 enum PixelFormat pix_fmt, int width, int height)
1018 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1020 pf = &pix_fmt_info[pix_fmt];
1021 switch(pf->pixel_type) {
1022 case FF_PIXEL_PACKED:
1023 case FF_PIXEL_PLANAR:
1024 for(i = 0; i < pf->nb_channels; i++) {
1026 int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
1028 if (i == 1 || i == 2) {
1029 h= -((-height)>>pf->y_chroma_shift);
1031 ff_img_copy_plane(dst->data[i], dst->linesize[i],
1032 src->data[i], src->linesize[i],
1036 case FF_PIXEL_PALETTE:
1037 ff_img_copy_plane(dst->data[0], dst->linesize[0],
1038 src->data[0], src->linesize[0],
1040 /* copy the palette */
1041 ff_img_copy_plane(dst->data[1], dst->linesize[1],
1042 src->data[1], src->linesize[1],
1049 void ff_shrink22(uint8_t *dst, int dst_wrap,
1050 const uint8_t *src, int src_wrap,
1051 int width, int height)
1054 const uint8_t *s1, *s2;
1057 for(;height > 0; height--) {
1061 for(w = width;w >= 4; w-=4) {
1062 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1063 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1064 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1065 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1071 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1076 src += 2 * src_wrap;
1082 void ff_shrink44(uint8_t *dst, int dst_wrap,
1083 const uint8_t *src, int src_wrap,
1084 int width, int height)
1087 const uint8_t *s1, *s2, *s3, *s4;
1090 for(;height > 0; height--) {
1096 for(w = width;w > 0; w--) {
1097 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1098 s2[0] + s2[1] + s2[2] + s2[3] +
1099 s3[0] + s3[1] + s3[2] + s3[3] +
1100 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1107 src += 4 * src_wrap;
1113 void ff_shrink88(uint8_t *dst, int dst_wrap,
1114 const uint8_t *src, int src_wrap,
1115 int width, int height)
1119 for(;height > 0; height--) {
1120 for(w = width;w > 0; w--) {
1123 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1126 *(dst++) = (tmp + 32)>>6;
1127 src += 8 - 8*src_wrap;
1129 src += 8*src_wrap - 8*width;
1130 dst += dst_wrap - width;
1135 int avpicture_alloc(AVPicture *picture,
1136 enum PixelFormat pix_fmt, int width, int height)
1141 size = avpicture_fill(picture, NULL, pix_fmt, width, height);
1144 ptr = av_malloc(size);
1147 avpicture_fill(picture, ptr, pix_fmt, width, height);
1148 if(picture->data[1] && !picture->data[2])
1149 ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt);
1153 memset(picture, 0, sizeof(AVPicture));
1157 void avpicture_free(AVPicture *picture)
1159 av_free(picture->data[0]);
1162 /* return true if yuv planar */
1163 static inline int is_yuv_planar(const PixFmtInfo *ps)
1165 return (ps->color_type == FF_COLOR_YUV ||
1166 ps->color_type == FF_COLOR_YUV_JPEG) &&
1167 ps->pixel_type == FF_PIXEL_PLANAR;
1170 int av_picture_crop(AVPicture *dst, const AVPicture *src,
1171 int pix_fmt, int top_band, int left_band)
1176 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
1179 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
1180 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
1182 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
1183 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
1184 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
1186 dst->linesize[0] = src->linesize[0];
1187 dst->linesize[1] = src->linesize[1];
1188 dst->linesize[2] = src->linesize[2];
1192 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
1193 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
1202 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
1203 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
1205 for (i = 0; i < 3; i++) {
1206 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
1207 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
1209 if (padtop || padleft) {
1210 memset(dst->data[i], color[i],
1211 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
1214 if (padleft || padright) {
1215 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1216 (dst->linesize[i] - (padright >> x_shift));
1217 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1218 for (y = 0; y < yheight; y++) {
1219 memset(optr, color[i], (padleft + padright) >> x_shift);
1220 optr += dst->linesize[i];
1224 if (src) { /* first line */
1225 uint8_t *iptr = src->data[i];
1226 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1227 (padleft >> x_shift);
1228 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
1229 iptr += src->linesize[i];
1230 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1231 (dst->linesize[i] - (padright >> x_shift));
1232 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1233 for (y = 0; y < yheight; y++) {
1234 memset(optr, color[i], (padleft + padright) >> x_shift);
1235 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
1236 (width - padleft - padright) >> x_shift);
1237 iptr += src->linesize[i];
1238 optr += dst->linesize[i];
1242 if (padbottom || padright) {
1243 optr = dst->data[i] + dst->linesize[i] *
1244 ((height - padbottom) >> y_shift) - (padright >> x_shift);
1245 memset(optr, color[i],dst->linesize[i] *
1246 (padbottom >> y_shift) + (padright >> x_shift));
1252 /* NOTE: we scan all the pixels to have an exact information */
1253 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
1255 const unsigned char *p;
1256 int src_wrap, ret, x, y;
1258 uint32_t *palette = (uint32_t *)src->data[1];
1261 src_wrap = src->linesize[0] - width;
1263 for(y=0;y<height;y++) {
1264 for(x=0;x<width;x++) {
1265 a = palette[p[0]] >> 24;
1267 ret |= FF_ALPHA_TRANSP;
1268 } else if (a != 0xff) {
1269 ret |= FF_ALPHA_SEMI_TRANSP;
1278 int img_get_alpha_info(const AVPicture *src,
1279 enum PixelFormat pix_fmt, int width, int height)
1281 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1284 pf = &pix_fmt_info[pix_fmt];
1285 /* no alpha can be represented in format */
1290 ret = get_alpha_info_pal8(src, width, height);
1293 /* we do not know, so everything is indicated */
1294 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
1301 #define DEINT_INPLACE_LINE_LUM \
1302 movd_m2r(lum_m4[0],mm0);\
1303 movd_m2r(lum_m3[0],mm1);\
1304 movd_m2r(lum_m2[0],mm2);\
1305 movd_m2r(lum_m1[0],mm3);\
1306 movd_m2r(lum[0],mm4);\
1307 punpcklbw_r2r(mm7,mm0);\
1308 movd_r2m(mm2,lum_m4[0]);\
1309 punpcklbw_r2r(mm7,mm1);\
1310 punpcklbw_r2r(mm7,mm2);\
1311 punpcklbw_r2r(mm7,mm3);\
1312 punpcklbw_r2r(mm7,mm4);\
1313 paddw_r2r(mm3,mm1);\
1315 paddw_r2r(mm4,mm0);\
1317 paddw_r2r(mm6,mm2);\
1318 paddw_r2r(mm2,mm1);\
1319 psubusw_r2r(mm0,mm1);\
1321 packuswb_r2r(mm7,mm1);\
1322 movd_r2m(mm1,lum_m2[0]);
1324 #define DEINT_LINE_LUM \
1325 movd_m2r(lum_m4[0],mm0);\
1326 movd_m2r(lum_m3[0],mm1);\
1327 movd_m2r(lum_m2[0],mm2);\
1328 movd_m2r(lum_m1[0],mm3);\
1329 movd_m2r(lum[0],mm4);\
1330 punpcklbw_r2r(mm7,mm0);\
1331 punpcklbw_r2r(mm7,mm1);\
1332 punpcklbw_r2r(mm7,mm2);\
1333 punpcklbw_r2r(mm7,mm3);\
1334 punpcklbw_r2r(mm7,mm4);\
1335 paddw_r2r(mm3,mm1);\
1337 paddw_r2r(mm4,mm0);\
1339 paddw_r2r(mm6,mm2);\
1340 paddw_r2r(mm2,mm1);\
1341 psubusw_r2r(mm0,mm1);\
1343 packuswb_r2r(mm7,mm1);\
1344 movd_r2m(mm1,dst[0]);
1347 /* filter parameters: [-1 4 2 4 -1] // 8 */
1348 static void deinterlace_line(uint8_t *dst,
1349 const uint8_t *lum_m4, const uint8_t *lum_m3,
1350 const uint8_t *lum_m2, const uint8_t *lum_m1,
1355 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1358 for(;size > 0;size--) {
1360 sum += lum_m3[0] << 2;
1361 sum += lum_m2[0] << 1;
1362 sum += lum_m1[0] << 2;
1364 dst[0] = cm[(sum + 4) >> 3];
1376 movq_m2r(ff_pw_4,mm6);
1378 for (;size > 3; size-=4) {
1389 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
1393 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1396 for(;size > 0;size--) {
1398 sum += lum_m3[0] << 2;
1399 sum += lum_m2[0] << 1;
1400 lum_m4[0]=lum_m2[0];
1401 sum += lum_m1[0] << 2;
1403 lum_m2[0] = cm[(sum + 4) >> 3];
1414 movq_m2r(ff_pw_4,mm6);
1416 for (;size > 3; size-=4) {
1417 DEINT_INPLACE_LINE_LUM
1427 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1428 top field is copied as is, but the bottom field is deinterlaced
1429 against the top field. */
1430 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1431 const uint8_t *src1, int src_wrap,
1432 int width, int height)
1434 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1439 src_0=&src_m1[src_wrap];
1440 src_p1=&src_0[src_wrap];
1441 src_p2=&src_p1[src_wrap];
1442 for(y=0;y<(height-2);y+=2) {
1443 memcpy(dst,src_m1,width);
1445 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1449 src_p1 += 2*src_wrap;
1450 src_p2 += 2*src_wrap;
1453 memcpy(dst,src_m1,width);
1456 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1459 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1460 int width, int height)
1462 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1465 buf = (uint8_t*)av_malloc(width);
1468 memcpy(buf,src_m1,width);
1469 src_0=&src_m1[src_wrap];
1470 src_p1=&src_0[src_wrap];
1471 src_p2=&src_p1[src_wrap];
1472 for(y=0;y<(height-2);y+=2) {
1473 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1476 src_p1 += 2*src_wrap;
1477 src_p2 += 2*src_wrap;
1480 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1484 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1485 enum PixelFormat pix_fmt, int width, int height)
1489 if (pix_fmt != PIX_FMT_YUV420P &&
1490 pix_fmt != PIX_FMT_YUV422P &&
1491 pix_fmt != PIX_FMT_YUV444P &&
1492 pix_fmt != PIX_FMT_YUV411P &&
1493 pix_fmt != PIX_FMT_GRAY8)
1495 if ((width & 3) != 0 || (height & 3) != 0)
1501 case PIX_FMT_YUV420P:
1505 case PIX_FMT_YUV422P:
1508 case PIX_FMT_YUV411P:
1514 if (pix_fmt == PIX_FMT_GRAY8) {
1519 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1522 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1523 src->data[i], src->linesize[i],