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,
219 [PIX_FMT_RGB565BE] = {
222 .color_type = FF_COLOR_RGB,
223 .pixel_type = FF_PIXEL_PACKED,
225 .x_chroma_shift = 0, .y_chroma_shift = 0,
227 [PIX_FMT_RGB565LE] = {
230 .color_type = FF_COLOR_RGB,
231 .pixel_type = FF_PIXEL_PACKED,
233 .x_chroma_shift = 0, .y_chroma_shift = 0,
235 [PIX_FMT_RGB555BE] = {
238 .color_type = FF_COLOR_RGB,
239 .pixel_type = FF_PIXEL_PACKED,
241 .x_chroma_shift = 0, .y_chroma_shift = 0,
243 [PIX_FMT_RGB555LE] = {
246 .color_type = FF_COLOR_RGB,
247 .pixel_type = FF_PIXEL_PACKED,
249 .x_chroma_shift = 0, .y_chroma_shift = 0,
252 /* gray / mono formats */
253 [PIX_FMT_GRAY16BE] = {
256 .color_type = FF_COLOR_GRAY,
257 .pixel_type = FF_PIXEL_PLANAR,
260 [PIX_FMT_GRAY16LE] = {
263 .color_type = FF_COLOR_GRAY,
264 .pixel_type = FF_PIXEL_PLANAR,
270 .color_type = FF_COLOR_GRAY,
271 .pixel_type = FF_PIXEL_PLANAR,
274 [PIX_FMT_MONOWHITE] = {
277 .color_type = FF_COLOR_GRAY,
278 .pixel_type = FF_PIXEL_PLANAR,
281 [PIX_FMT_MONOBLACK] = {
284 .color_type = FF_COLOR_GRAY,
285 .pixel_type = FF_PIXEL_PLANAR,
289 /* paletted formats */
292 .nb_channels = 4, .is_alpha = 1,
293 .color_type = FF_COLOR_RGB,
294 .pixel_type = FF_PIXEL_PALETTE,
297 [PIX_FMT_XVMC_MPEG2_MC] = {
301 [PIX_FMT_XVMC_MPEG2_IDCT] = {
305 [PIX_FMT_VDPAU_MPEG1] = {
306 .name = "vdpau_mpeg1",
308 .x_chroma_shift = 1, .y_chroma_shift = 1,
310 [PIX_FMT_VDPAU_MPEG2] = {
311 .name = "vdpau_mpeg2",
313 .x_chroma_shift = 1, .y_chroma_shift = 1,
315 [PIX_FMT_VDPAU_H264] = {
316 .name = "vdpau_h264",
318 .x_chroma_shift = 1, .y_chroma_shift = 1,
320 [PIX_FMT_VDPAU_WMV3] = {
321 .name = "vdpau_wmv3",
323 .x_chroma_shift = 1, .y_chroma_shift = 1,
325 [PIX_FMT_VDPAU_VC1] = {
328 .x_chroma_shift = 1, .y_chroma_shift = 1,
330 [PIX_FMT_UYYVYY411] = {
333 .color_type = FF_COLOR_YUV,
334 .pixel_type = FF_PIXEL_PACKED,
336 .x_chroma_shift = 2, .y_chroma_shift = 0,
340 .nb_channels = 4, .is_alpha = 1,
341 .color_type = FF_COLOR_RGB,
342 .pixel_type = FF_PIXEL_PACKED,
344 .x_chroma_shift = 0, .y_chroma_shift = 0,
346 [PIX_FMT_BGR565BE] = {
349 .color_type = FF_COLOR_RGB,
350 .pixel_type = FF_PIXEL_PACKED,
352 .x_chroma_shift = 0, .y_chroma_shift = 0,
354 [PIX_FMT_BGR565LE] = {
357 .color_type = FF_COLOR_RGB,
358 .pixel_type = FF_PIXEL_PACKED,
360 .x_chroma_shift = 0, .y_chroma_shift = 0,
362 [PIX_FMT_BGR555BE] = {
365 .color_type = FF_COLOR_RGB,
366 .pixel_type = FF_PIXEL_PACKED,
368 .x_chroma_shift = 0, .y_chroma_shift = 0,
370 [PIX_FMT_BGR555LE] = {
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,
389 .color_type = FF_COLOR_RGB,
390 .pixel_type = FF_PIXEL_PACKED,
392 .x_chroma_shift = 0, .y_chroma_shift = 0,
394 [PIX_FMT_RGB4_BYTE] = {
397 .color_type = FF_COLOR_RGB,
398 .pixel_type = FF_PIXEL_PACKED,
400 .x_chroma_shift = 0, .y_chroma_shift = 0,
405 .color_type = FF_COLOR_RGB,
406 .pixel_type = FF_PIXEL_PACKED,
408 .x_chroma_shift = 0, .y_chroma_shift = 0,
413 .color_type = FF_COLOR_RGB,
414 .pixel_type = FF_PIXEL_PACKED,
416 .x_chroma_shift = 0, .y_chroma_shift = 0,
418 [PIX_FMT_BGR4_BYTE] = {
421 .color_type = FF_COLOR_RGB,
422 .pixel_type = FF_PIXEL_PACKED,
424 .x_chroma_shift = 0, .y_chroma_shift = 0,
429 .color_type = FF_COLOR_YUV,
430 .pixel_type = FF_PIXEL_PLANAR,
432 .x_chroma_shift = 1, .y_chroma_shift = 1,
437 .color_type = FF_COLOR_YUV,
438 .pixel_type = FF_PIXEL_PLANAR,
440 .x_chroma_shift = 1, .y_chroma_shift = 1,
443 [PIX_FMT_BGR32_1] = {
445 .nb_channels = 4, .is_alpha = 1,
446 .color_type = FF_COLOR_RGB,
447 .pixel_type = FF_PIXEL_PACKED,
449 .x_chroma_shift = 0, .y_chroma_shift = 0,
451 [PIX_FMT_RGB32_1] = {
453 .nb_channels = 4, .is_alpha = 1,
454 .color_type = FF_COLOR_RGB,
455 .pixel_type = FF_PIXEL_PACKED,
457 .x_chroma_shift = 0, .y_chroma_shift = 0,
461 [PIX_FMT_VAAPI_MOCO] = {
462 .name = "vaapi_moco",
464 .x_chroma_shift = 1, .y_chroma_shift = 1,
466 [PIX_FMT_VAAPI_IDCT] = {
467 .name = "vaapi_idct",
469 .x_chroma_shift = 1, .y_chroma_shift = 1,
471 [PIX_FMT_VAAPI_VLD] = {
474 .x_chroma_shift = 1, .y_chroma_shift = 1,
478 void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
480 *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
481 *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
484 const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
486 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
489 return pix_fmt_info[pix_fmt].name;
492 static enum PixelFormat avcodec_get_pix_fmt_internal(const char *name)
496 for (i=0; i < PIX_FMT_NB; i++)
497 if (!strcmp(pix_fmt_info[i].name, name))
502 enum PixelFormat avcodec_get_pix_fmt(const char *name)
504 #ifdef WORDS_BIGENDIAN
509 enum PixelFormat pix_fmt = avcodec_get_pix_fmt_internal(name);
511 if (pix_fmt == PIX_FMT_NONE) {
513 snprintf(name2, sizeof(name2), "%s%s", name, NE);
514 pix_fmt = avcodec_get_pix_fmt_internal(name2);
520 void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
524 snprintf (buf, buf_size,
525 "name " " nb_channels" " depth" " is_alpha"
528 PixFmtInfo info= pix_fmt_info[pix_fmt];
530 char is_alpha_char= info.is_alpha ? 'y' : 'n';
532 snprintf (buf, buf_size,
533 "%-10s" " %1d " " %2d " " %c ",
542 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
544 return pix_fmt_info[pix_fmt].is_hwaccel;
547 int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
550 for(i=0; i<256; i++){
564 case PIX_FMT_RGB4_BYTE:
569 case PIX_FMT_BGR4_BYTE:
580 pal[i] = b + (g<<8) + (r<<16);
586 int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
589 const PixFmtInfo *pinfo;
591 memset(picture->linesize, 0, sizeof(picture->linesize));
593 pinfo = &pix_fmt_info[pix_fmt];
595 case PIX_FMT_YUV420P:
596 case PIX_FMT_YUV422P:
597 case PIX_FMT_YUV444P:
598 case PIX_FMT_YUV410P:
599 case PIX_FMT_YUV411P:
600 case PIX_FMT_YUV440P:
601 case PIX_FMT_YUVJ420P:
602 case PIX_FMT_YUVJ422P:
603 case PIX_FMT_YUVJ444P:
604 case PIX_FMT_YUVJ440P:
605 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
606 picture->linesize[0] = width;
607 picture->linesize[1] = w2;
608 picture->linesize[2] = w2;
610 case PIX_FMT_YUVA420P:
611 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
612 picture->linesize[0] = width;
613 picture->linesize[1] = w2;
614 picture->linesize[2] = w2;
615 picture->linesize[3] = width;
619 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
620 picture->linesize[0] = width;
621 picture->linesize[1] = w2;
625 picture->linesize[0] = width * 3;
629 case PIX_FMT_RGB32_1:
630 case PIX_FMT_BGR32_1:
631 picture->linesize[0] = width * 4;
633 case PIX_FMT_RGB48BE:
634 case PIX_FMT_RGB48LE:
635 picture->linesize[0] = width * 6;
637 case PIX_FMT_GRAY16BE:
638 case PIX_FMT_GRAY16LE:
643 case PIX_FMT_YUYV422:
644 picture->linesize[0] = width * 2;
646 case PIX_FMT_UYVY422:
647 picture->linesize[0] = width * 2;
649 case PIX_FMT_UYYVYY411:
650 picture->linesize[0] = width + width/2;
654 picture->linesize[0] = width / 2;
656 case PIX_FMT_MONOWHITE:
657 case PIX_FMT_MONOBLACK:
658 picture->linesize[0] = (width + 7) >> 3;
663 case PIX_FMT_RGB4_BYTE:
664 case PIX_FMT_BGR4_BYTE:
666 picture->linesize[0] = width;
674 int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
678 const PixFmtInfo *pinfo;
680 pinfo = &pix_fmt_info[pix_fmt];
681 size = picture->linesize[0] * height;
683 case PIX_FMT_YUV420P:
684 case PIX_FMT_YUV422P:
685 case PIX_FMT_YUV444P:
686 case PIX_FMT_YUV410P:
687 case PIX_FMT_YUV411P:
688 case PIX_FMT_YUV440P:
689 case PIX_FMT_YUVJ420P:
690 case PIX_FMT_YUVJ422P:
691 case PIX_FMT_YUVJ444P:
692 case PIX_FMT_YUVJ440P:
693 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
694 size2 = picture->linesize[1] * h2;
695 picture->data[0] = ptr;
696 picture->data[1] = picture->data[0] + size;
697 picture->data[2] = picture->data[1] + size2;
698 picture->data[3] = NULL;
699 return size + 2 * size2;
700 case PIX_FMT_YUVA420P:
701 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
702 size2 = picture->linesize[1] * h2;
703 picture->data[0] = ptr;
704 picture->data[1] = picture->data[0] + size;
705 picture->data[2] = picture->data[1] + size2;
706 picture->data[3] = picture->data[1] + size2 + size2;
707 return 2 * size + 2 * size2;
710 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
711 size2 = picture->linesize[1] * h2 * 2;
712 picture->data[0] = ptr;
713 picture->data[1] = picture->data[0] + size;
714 picture->data[2] = NULL;
715 picture->data[3] = NULL;
716 return size + 2 * size2;
721 case PIX_FMT_RGB32_1:
722 case PIX_FMT_BGR32_1:
723 case PIX_FMT_RGB48BE:
724 case PIX_FMT_RGB48LE:
725 case PIX_FMT_GRAY16BE:
726 case PIX_FMT_GRAY16LE:
731 case PIX_FMT_YUYV422:
732 case PIX_FMT_UYVY422:
733 case PIX_FMT_UYYVYY411:
736 case PIX_FMT_MONOWHITE:
737 case PIX_FMT_MONOBLACK:
738 picture->data[0] = ptr;
739 picture->data[1] = NULL;
740 picture->data[2] = NULL;
741 picture->data[3] = NULL;
746 case PIX_FMT_RGB4_BYTE:
747 case PIX_FMT_BGR4_BYTE:
749 size2 = (size + 3) & ~3;
750 picture->data[0] = ptr;
751 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
752 picture->data[2] = NULL;
753 picture->data[3] = NULL;
754 return size2 + 256 * 4;
756 picture->data[0] = NULL;
757 picture->data[1] = NULL;
758 picture->data[2] = NULL;
759 picture->data[3] = NULL;
764 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
765 enum PixelFormat pix_fmt, int width, int height)
768 if(avcodec_check_dimensions(NULL, width, height))
771 if (ff_fill_linesize(picture, pix_fmt, width))
774 return ff_fill_pointer(picture, ptr, pix_fmt, height);
777 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
778 unsigned char *dest, int dest_size)
780 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
781 int i, j, w, ow, h, oh, data_planes;
782 const unsigned char* s;
783 int size = avpicture_get_size(pix_fmt, width, height);
785 if (size > dest_size || size < 0)
788 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
789 if (pix_fmt == PIX_FMT_YUYV422 ||
790 pix_fmt == PIX_FMT_UYVY422 ||
791 pix_fmt == PIX_FMT_BGR565 ||
792 pix_fmt == PIX_FMT_BGR555 ||
793 pix_fmt == PIX_FMT_RGB565 ||
794 pix_fmt == PIX_FMT_RGB555)
796 else if (pix_fmt == PIX_FMT_UYYVYY411)
798 else if (pix_fmt == PIX_FMT_PAL8)
801 w = width * (pf->depth * pf->nb_channels / 8);
806 data_planes = pf->nb_channels;
807 w = (width*pf->depth + 7)/8;
814 for (i=0; i<data_planes; i++) {
816 w = width >> pf->x_chroma_shift;
817 h = height >> pf->y_chroma_shift;
826 s += src->linesize[i];
830 if (pf->pixel_type == FF_PIXEL_PALETTE)
831 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
836 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
838 AVPicture dummy_pict;
839 if(avcodec_check_dimensions(NULL, width, height))
844 case PIX_FMT_RGB4_BYTE:
845 case PIX_FMT_BGR4_BYTE:
847 // do not include palette for these pseudo-paletted formats
848 return width * height;
850 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
853 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
856 const PixFmtInfo *pf, *ps;
859 ps = &pix_fmt_info[src_pix_fmt];
860 pf = &pix_fmt_info[dst_pix_fmt];
864 pf = &pix_fmt_info[dst_pix_fmt];
865 if (pf->depth < ps->depth ||
866 (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
867 loss |= FF_LOSS_DEPTH;
868 if (pf->x_chroma_shift > ps->x_chroma_shift ||
869 pf->y_chroma_shift > ps->y_chroma_shift)
870 loss |= FF_LOSS_RESOLUTION;
871 switch(pf->color_type) {
873 if (ps->color_type != FF_COLOR_RGB &&
874 ps->color_type != FF_COLOR_GRAY)
875 loss |= FF_LOSS_COLORSPACE;
878 if (ps->color_type != FF_COLOR_GRAY)
879 loss |= FF_LOSS_COLORSPACE;
882 if (ps->color_type != FF_COLOR_YUV)
883 loss |= FF_LOSS_COLORSPACE;
885 case FF_COLOR_YUV_JPEG:
886 if (ps->color_type != FF_COLOR_YUV_JPEG &&
887 ps->color_type != FF_COLOR_YUV &&
888 ps->color_type != FF_COLOR_GRAY)
889 loss |= FF_LOSS_COLORSPACE;
893 if (ps->color_type != pf->color_type)
894 loss |= FF_LOSS_COLORSPACE;
897 if (pf->color_type == FF_COLOR_GRAY &&
898 ps->color_type != FF_COLOR_GRAY)
899 loss |= FF_LOSS_CHROMA;
900 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
901 loss |= FF_LOSS_ALPHA;
902 if (pf->pixel_type == FF_PIXEL_PALETTE &&
903 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
904 loss |= FF_LOSS_COLORQUANT;
908 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
911 const PixFmtInfo *pf;
913 pf = &pix_fmt_info[pix_fmt];
914 switch(pf->pixel_type) {
915 case FF_PIXEL_PACKED:
917 case PIX_FMT_YUYV422:
918 case PIX_FMT_UYVY422:
925 case PIX_FMT_UYYVYY411:
929 bits = pf->depth * pf->nb_channels;
933 case FF_PIXEL_PLANAR:
934 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
935 bits = pf->depth * pf->nb_channels;
937 bits = pf->depth + ((2 * pf->depth) >>
938 (pf->x_chroma_shift + pf->y_chroma_shift));
941 case FF_PIXEL_PALETTE:
951 static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
952 enum PixelFormat src_pix_fmt,
956 int dist, i, loss, min_dist;
957 enum PixelFormat dst_pix_fmt;
959 /* find exact color match with smallest size */
961 min_dist = 0x7fffffff;
962 for(i = 0;i < PIX_FMT_NB; i++) {
963 if (pix_fmt_mask & (1ULL << i)) {
964 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
966 dist = avg_bits_per_pixel(i);
967 if (dist < min_dist) {
977 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
978 int has_alpha, int *loss_ptr)
980 enum PixelFormat dst_pix_fmt;
982 static const int loss_mask_order[] = {
983 ~0, /* no loss first */
986 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
992 /* try with successive loss */
995 loss_mask = loss_mask_order[i++];
996 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
997 has_alpha, loss_mask);
998 if (dst_pix_fmt >= 0)
1006 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
1010 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
1011 const uint8_t *src, int src_wrap,
1012 int width, int height)
1014 if((!dst) || (!src))
1016 for(;height > 0; height--) {
1017 memcpy(dst, src, width);
1023 int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
1026 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1028 pf = &pix_fmt_info[pix_fmt];
1029 switch(pf->pixel_type) {
1030 case FF_PIXEL_PACKED:
1032 case PIX_FMT_YUYV422:
1033 case PIX_FMT_UYVY422:
1034 case PIX_FMT_RGB565:
1035 case PIX_FMT_RGB555:
1036 case PIX_FMT_BGR565:
1037 case PIX_FMT_BGR555:
1040 case PIX_FMT_UYYVYY411:
1044 bits = pf->depth * pf->nb_channels;
1047 return (width * bits + 7) >> 3;
1049 case FF_PIXEL_PLANAR:
1050 if (plane == 1 || plane == 2)
1051 width= -((-width)>>pf->x_chroma_shift);
1053 return (width * pf->depth + 7) >> 3;
1055 case FF_PIXEL_PALETTE:
1064 void av_picture_copy(AVPicture *dst, const AVPicture *src,
1065 enum PixelFormat pix_fmt, int width, int height)
1068 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1070 pf = &pix_fmt_info[pix_fmt];
1071 switch(pf->pixel_type) {
1072 case FF_PIXEL_PACKED:
1073 case FF_PIXEL_PLANAR:
1074 for(i = 0; i < pf->nb_channels; i++) {
1076 int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
1078 if (i == 1 || i == 2) {
1079 h= -((-height)>>pf->y_chroma_shift);
1081 ff_img_copy_plane(dst->data[i], dst->linesize[i],
1082 src->data[i], src->linesize[i],
1086 case FF_PIXEL_PALETTE:
1087 ff_img_copy_plane(dst->data[0], dst->linesize[0],
1088 src->data[0], src->linesize[0],
1090 /* copy the palette */
1091 ff_img_copy_plane(dst->data[1], dst->linesize[1],
1092 src->data[1], src->linesize[1],
1099 void ff_shrink22(uint8_t *dst, int dst_wrap,
1100 const uint8_t *src, int src_wrap,
1101 int width, int height)
1104 const uint8_t *s1, *s2;
1107 for(;height > 0; height--) {
1111 for(w = width;w >= 4; w-=4) {
1112 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1113 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1114 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1115 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1121 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1126 src += 2 * src_wrap;
1132 void ff_shrink44(uint8_t *dst, int dst_wrap,
1133 const uint8_t *src, int src_wrap,
1134 int width, int height)
1137 const uint8_t *s1, *s2, *s3, *s4;
1140 for(;height > 0; height--) {
1146 for(w = width;w > 0; w--) {
1147 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1148 s2[0] + s2[1] + s2[2] + s2[3] +
1149 s3[0] + s3[1] + s3[2] + s3[3] +
1150 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1157 src += 4 * src_wrap;
1163 void ff_shrink88(uint8_t *dst, int dst_wrap,
1164 const uint8_t *src, int src_wrap,
1165 int width, int height)
1169 for(;height > 0; height--) {
1170 for(w = width;w > 0; w--) {
1173 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1176 *(dst++) = (tmp + 32)>>6;
1177 src += 8 - 8*src_wrap;
1179 src += 8*src_wrap - 8*width;
1180 dst += dst_wrap - width;
1185 int avpicture_alloc(AVPicture *picture,
1186 enum PixelFormat pix_fmt, int width, int height)
1191 size = avpicture_fill(picture, NULL, pix_fmt, width, height);
1194 ptr = av_malloc(size);
1197 avpicture_fill(picture, ptr, pix_fmt, width, height);
1198 if(picture->data[1] && !picture->data[2])
1199 ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt);
1203 memset(picture, 0, sizeof(AVPicture));
1207 void avpicture_free(AVPicture *picture)
1209 av_free(picture->data[0]);
1212 /* return true if yuv planar */
1213 static inline int is_yuv_planar(const PixFmtInfo *ps)
1215 return (ps->color_type == FF_COLOR_YUV ||
1216 ps->color_type == FF_COLOR_YUV_JPEG) &&
1217 ps->pixel_type == FF_PIXEL_PLANAR;
1220 int av_picture_crop(AVPicture *dst, const AVPicture *src,
1221 int pix_fmt, int top_band, int left_band)
1226 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
1229 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
1230 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
1232 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
1233 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
1234 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
1236 dst->linesize[0] = src->linesize[0];
1237 dst->linesize[1] = src->linesize[1];
1238 dst->linesize[2] = src->linesize[2];
1242 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
1243 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
1252 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
1253 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
1255 for (i = 0; i < 3; i++) {
1256 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
1257 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
1259 if (padtop || padleft) {
1260 memset(dst->data[i], color[i],
1261 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
1264 if (padleft || padright) {
1265 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1266 (dst->linesize[i] - (padright >> x_shift));
1267 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1268 for (y = 0; y < yheight; y++) {
1269 memset(optr, color[i], (padleft + padright) >> x_shift);
1270 optr += dst->linesize[i];
1274 if (src) { /* first line */
1275 uint8_t *iptr = src->data[i];
1276 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1277 (padleft >> x_shift);
1278 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
1279 iptr += src->linesize[i];
1280 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1281 (dst->linesize[i] - (padright >> x_shift));
1282 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1283 for (y = 0; y < yheight; y++) {
1284 memset(optr, color[i], (padleft + padright) >> x_shift);
1285 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
1286 (width - padleft - padright) >> x_shift);
1287 iptr += src->linesize[i];
1288 optr += dst->linesize[i];
1292 if (padbottom || padright) {
1293 optr = dst->data[i] + dst->linesize[i] *
1294 ((height - padbottom) >> y_shift) - (padright >> x_shift);
1295 memset(optr, color[i],dst->linesize[i] *
1296 (padbottom >> y_shift) + (padright >> x_shift));
1302 /* NOTE: we scan all the pixels to have an exact information */
1303 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
1305 const unsigned char *p;
1306 int src_wrap, ret, x, y;
1308 uint32_t *palette = (uint32_t *)src->data[1];
1311 src_wrap = src->linesize[0] - width;
1313 for(y=0;y<height;y++) {
1314 for(x=0;x<width;x++) {
1315 a = palette[p[0]] >> 24;
1317 ret |= FF_ALPHA_TRANSP;
1318 } else if (a != 0xff) {
1319 ret |= FF_ALPHA_SEMI_TRANSP;
1328 int img_get_alpha_info(const AVPicture *src,
1329 enum PixelFormat pix_fmt, int width, int height)
1331 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1334 pf = &pix_fmt_info[pix_fmt];
1335 /* no alpha can be represented in format */
1340 ret = get_alpha_info_pal8(src, width, height);
1343 /* we do not know, so everything is indicated */
1344 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
1351 #define DEINT_INPLACE_LINE_LUM \
1352 movd_m2r(lum_m4[0],mm0);\
1353 movd_m2r(lum_m3[0],mm1);\
1354 movd_m2r(lum_m2[0],mm2);\
1355 movd_m2r(lum_m1[0],mm3);\
1356 movd_m2r(lum[0],mm4);\
1357 punpcklbw_r2r(mm7,mm0);\
1358 movd_r2m(mm2,lum_m4[0]);\
1359 punpcklbw_r2r(mm7,mm1);\
1360 punpcklbw_r2r(mm7,mm2);\
1361 punpcklbw_r2r(mm7,mm3);\
1362 punpcklbw_r2r(mm7,mm4);\
1363 paddw_r2r(mm3,mm1);\
1365 paddw_r2r(mm4,mm0);\
1367 paddw_r2r(mm6,mm2);\
1368 paddw_r2r(mm2,mm1);\
1369 psubusw_r2r(mm0,mm1);\
1371 packuswb_r2r(mm7,mm1);\
1372 movd_r2m(mm1,lum_m2[0]);
1374 #define DEINT_LINE_LUM \
1375 movd_m2r(lum_m4[0],mm0);\
1376 movd_m2r(lum_m3[0],mm1);\
1377 movd_m2r(lum_m2[0],mm2);\
1378 movd_m2r(lum_m1[0],mm3);\
1379 movd_m2r(lum[0],mm4);\
1380 punpcklbw_r2r(mm7,mm0);\
1381 punpcklbw_r2r(mm7,mm1);\
1382 punpcklbw_r2r(mm7,mm2);\
1383 punpcklbw_r2r(mm7,mm3);\
1384 punpcklbw_r2r(mm7,mm4);\
1385 paddw_r2r(mm3,mm1);\
1387 paddw_r2r(mm4,mm0);\
1389 paddw_r2r(mm6,mm2);\
1390 paddw_r2r(mm2,mm1);\
1391 psubusw_r2r(mm0,mm1);\
1393 packuswb_r2r(mm7,mm1);\
1394 movd_r2m(mm1,dst[0]);
1397 /* filter parameters: [-1 4 2 4 -1] // 8 */
1398 static void deinterlace_line(uint8_t *dst,
1399 const uint8_t *lum_m4, const uint8_t *lum_m3,
1400 const uint8_t *lum_m2, const uint8_t *lum_m1,
1405 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1408 for(;size > 0;size--) {
1410 sum += lum_m3[0] << 2;
1411 sum += lum_m2[0] << 1;
1412 sum += lum_m1[0] << 2;
1414 dst[0] = cm[(sum + 4) >> 3];
1426 movq_m2r(ff_pw_4,mm6);
1428 for (;size > 3; size-=4) {
1439 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
1443 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1446 for(;size > 0;size--) {
1448 sum += lum_m3[0] << 2;
1449 sum += lum_m2[0] << 1;
1450 lum_m4[0]=lum_m2[0];
1451 sum += lum_m1[0] << 2;
1453 lum_m2[0] = cm[(sum + 4) >> 3];
1464 movq_m2r(ff_pw_4,mm6);
1466 for (;size > 3; size-=4) {
1467 DEINT_INPLACE_LINE_LUM
1477 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1478 top field is copied as is, but the bottom field is deinterlaced
1479 against the top field. */
1480 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1481 const uint8_t *src1, int src_wrap,
1482 int width, int height)
1484 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1489 src_0=&src_m1[src_wrap];
1490 src_p1=&src_0[src_wrap];
1491 src_p2=&src_p1[src_wrap];
1492 for(y=0;y<(height-2);y+=2) {
1493 memcpy(dst,src_m1,width);
1495 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1499 src_p1 += 2*src_wrap;
1500 src_p2 += 2*src_wrap;
1503 memcpy(dst,src_m1,width);
1506 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1509 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1510 int width, int height)
1512 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1515 buf = (uint8_t*)av_malloc(width);
1518 memcpy(buf,src_m1,width);
1519 src_0=&src_m1[src_wrap];
1520 src_p1=&src_0[src_wrap];
1521 src_p2=&src_p1[src_wrap];
1522 for(y=0;y<(height-2);y+=2) {
1523 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1526 src_p1 += 2*src_wrap;
1527 src_p2 += 2*src_wrap;
1530 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1534 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1535 enum PixelFormat pix_fmt, int width, int height)
1539 if (pix_fmt != PIX_FMT_YUV420P &&
1540 pix_fmt != PIX_FMT_YUV422P &&
1541 pix_fmt != PIX_FMT_YUV444P &&
1542 pix_fmt != PIX_FMT_YUV411P &&
1543 pix_fmt != PIX_FMT_GRAY8)
1545 if ((width & 3) != 0 || (height & 3) != 0)
1551 case PIX_FMT_YUV420P:
1555 case PIX_FMT_YUV422P:
1558 case PIX_FMT_YUV411P:
1564 if (pix_fmt == PIX_FMT_GRAY8) {
1569 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1572 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1573 src->data[i], src->linesize[i],